265 files changed, 15902 insertions, 3458 deletions

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 52077ca22072..6e64f7c6a2e9 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -272,13 +272,11 @@ static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
                 snprintf(name, IFNAMSIZ, "vlan%.4i", vlan_id);
         }
 
-        new_dev = alloc_netdev_mq(sizeof(struct vlan_dev_info), name,
-                                  vlan_setup, real_dev->num_tx_queues);
+        new_dev = alloc_netdev(sizeof(struct vlan_dev_info), name, vlan_setup);
 
         if (new_dev == NULL)
                 return -ENOBUFS;
 
-        netif_copy_real_num_queues(new_dev, real_dev);
         dev_net_set(new_dev, net);
         /* need 4 bytes for extra VLAN header info,
          * hope the underlying device can handle it.
@@ -334,12 +332,15 @@ static void vlan_transfer_features(struct net_device *dev,
         vlandev->features &= ~dev->vlan_features;
         vlandev->features |= dev->features & dev->vlan_features;
         vlandev->gso_max_size = dev->gso_max_size;
+
+        if (dev->features & NETIF_F_HW_VLAN_TX)
+                vlandev->hard_header_len = dev->hard_header_len;
+        else
+                vlandev->hard_header_len = dev->hard_header_len + VLAN_HLEN;
+
 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
         vlandev->fcoe_ddp_xid = dev->fcoe_ddp_xid;
 #endif
-        vlandev->real_num_tx_queues = dev->real_num_tx_queues;
-        BUG_ON(vlandev->real_num_tx_queues > vlandev->num_tx_queues);
-
         if (old_features != vlandev->features)
                 netdev_features_change(vlandev);
 }
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index db01b3181fdc..5687c9b95f33 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -19,19 +19,25 @@ struct vlan_priority_tci_mapping {
 
 
 /**
- *      struct vlan_rx_stats - VLAN percpu rx stats
+ *      struct vlan_pcpu_stats - VLAN percpu rx/tx stats
  *      @rx_packets: number of received packets
  *      @rx_bytes: number of received bytes
  *      @rx_multicast: number of received multicast packets
+ *      @tx_packets: number of transmitted packets
+ *      @tx_bytes: number of transmitted bytes
  *      @syncp: synchronization point for 64bit counters
- *      @rx_errors: number of errors
+ *      @rx_errors: number of rx errors
+ *      @tx_dropped: number of tx drops
  */
-struct vlan_rx_stats {
+struct vlan_pcpu_stats {
         u64                     rx_packets;
         u64                     rx_bytes;
         u64                     rx_multicast;
+        u64                     tx_packets;
+        u64                     tx_bytes;
         struct u64_stats_sync   syncp;
-        unsigned long           rx_errors;
+        u32                     rx_errors;
+        u32                     tx_dropped;
 };
 
 /**
@@ -45,9 +51,7 @@ struct vlan_rx_stats {
  *      @real_dev: underlying netdevice
  *      @real_dev_addr: address of underlying netdevice
  *      @dent: proc dir entry
- *      @cnt_inc_headroom_on_tx: statistic - number of skb expansions on TX
- *      @cnt_encap_on_xmit: statistic - number of skb encapsulations on TX
- *      @vlan_rx_stats: ptr to percpu rx stats
+ *      @vlan_pcpu_stats: ptr to percpu rx stats
  */
 struct vlan_dev_info {
         unsigned int                            nr_ingress_mappings;
@@ -62,9 +66,7 @@ struct vlan_dev_info {
         unsigned char                           real_dev_addr[ETH_ALEN];
 
         struct proc_dir_entry                   *dent;
-        unsigned long                           cnt_inc_headroom_on_tx;
-        unsigned long                           cnt_encap_on_xmit;
-        struct vlan_rx_stats __percpu           *vlan_rx_stats;
+        struct vlan_pcpu_stats __percpu         *vlan_pcpu_stats;
 };
 
 static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index 69b2f79800a5..ce8e3ab3e7a5 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -9,7 +9,7 @@ bool vlan_hwaccel_do_receive(struct sk_buff **skbp)
         struct sk_buff *skb = *skbp;
         u16 vlan_id = skb->vlan_tci & VLAN_VID_MASK;
         struct net_device *vlan_dev;
-        struct vlan_rx_stats *rx_stats;
+        struct vlan_pcpu_stats *rx_stats;
 
         vlan_dev = vlan_find_dev(skb->dev, vlan_id);
         if (!vlan_dev) {
@@ -26,7 +26,7 @@ bool vlan_hwaccel_do_receive(struct sk_buff **skbp)
         skb->priority = vlan_get_ingress_priority(vlan_dev, skb->vlan_tci);
         skb->vlan_tci = 0;
 
-        rx_stats = this_cpu_ptr(vlan_dev_info(vlan_dev)->vlan_rx_stats);
+        rx_stats = this_cpu_ptr(vlan_dev_info(vlan_dev)->vlan_pcpu_stats);
 
         u64_stats_update_begin(&rx_stats->syncp);
         rx_stats->rx_packets++;
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 14e3d1fa07a0..be737539f34d 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -141,7 +141,7 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
                   struct packet_type *ptype, struct net_device *orig_dev)
 {
         struct vlan_hdr *vhdr;
-        struct vlan_rx_stats *rx_stats;
+        struct vlan_pcpu_stats *rx_stats;
         struct net_device *vlan_dev;
         u16 vlan_id;
         u16 vlan_tci;
@@ -177,7 +177,7 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
         } else {
                 skb->dev = vlan_dev;
 
-                rx_stats = this_cpu_ptr(vlan_dev_info(skb->dev)->vlan_rx_stats);
+                rx_stats = this_cpu_ptr(vlan_dev_info(skb->dev)->vlan_pcpu_stats);
 
                 u64_stats_update_begin(&rx_stats->syncp);
                 rx_stats->rx_packets++;
@@ -274,9 +274,6 @@ static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
         u16 vlan_tci = 0;
         int rc;
 
-        if (WARN_ON(skb_headroom(skb) < dev->hard_header_len))
-                return -ENOSPC;
-
         if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) {
                 vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN);
 
@@ -313,8 +310,6 @@ static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
 static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
                                             struct net_device *dev)
 {
-        int i = skb_get_queue_mapping(skb);
-        struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
         struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
         unsigned int len;
         int ret;
@@ -326,71 +321,31 @@ static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
          */
         if (veth->h_vlan_proto != htons(ETH_P_8021Q) ||
             vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) {
-                unsigned int orig_headroom = skb_headroom(skb);
                 u16 vlan_tci;
-
-                vlan_dev_info(dev)->cnt_encap_on_xmit++;
-
                 vlan_tci = vlan_dev_info(dev)->vlan_id;
                 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
-                skb = __vlan_put_tag(skb, vlan_tci);
-                if (!skb) {
-                        txq->tx_dropped++;
-                        return NETDEV_TX_OK;
-                }
-
-                if (orig_headroom < VLAN_HLEN)
-                        vlan_dev_info(dev)->cnt_inc_headroom_on_tx++;
+                skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
         }
 
-
         skb_set_dev(skb, vlan_dev_info(dev)->real_dev);
         len = skb->len;
         ret = dev_queue_xmit(skb);
 
         if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
-                txq->tx_packets++;
-                txq->tx_bytes += len;
-        } else
-                txq->tx_dropped++;
+                struct vlan_pcpu_stats *stats;
 
-        return ret;
-}
-
-static netdev_tx_t vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb,
-                                                    struct net_device *dev)
-{
-        int i = skb_get_queue_mapping(skb);
-        struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
-        u16 vlan_tci;
-        unsigned int len;
-        int ret;
-
-        vlan_tci = vlan_dev_info(dev)->vlan_id;
-        vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
-        skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
-
-        skb->dev = vlan_dev_info(dev)->real_dev;
-        len = skb->len;
-        ret = dev_queue_xmit(skb);
-
-        if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
-                txq->tx_packets++;
-                txq->tx_bytes += len;
-        } else
-                txq->tx_dropped++;
+                stats = this_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats);
+                u64_stats_update_begin(&stats->syncp);
+                stats->tx_packets++;
+                stats->tx_bytes += len;
+                u64_stats_update_begin(&stats->syncp);
+        } else {
+                this_cpu_inc(vlan_dev_info(dev)->vlan_pcpu_stats->tx_dropped);
+        }
 
         return ret;
 }
 
-static u16 vlan_dev_select_queue(struct net_device *dev, struct sk_buff *skb)
-{
-        struct net_device *rdev = vlan_dev_info(dev)->real_dev;
-        const struct net_device_ops *ops = rdev->netdev_ops;
-
-        return ops->ndo_select_queue(rdev, skb);
-}
-
 static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu)
 {
         /* TODO: gotta make sure the underlying layer can handle it,
@@ -719,8 +674,7 @@ static const struct header_ops vlan_header_ops = {
         .parse   = eth_header_parse,
 };
 
-static const struct net_device_ops vlan_netdev_ops, vlan_netdev_accel_ops,
-                    vlan_netdev_ops_sq, vlan_netdev_accel_ops_sq;
+static const struct net_device_ops vlan_netdev_ops;
 
 static int vlan_dev_init(struct net_device *dev)
 {
@@ -738,6 +692,7 @@ static int vlan_dev_init(struct net_device *dev)
                       (1<<__LINK_STATE_PRESENT);
 
         dev->features |= real_dev->features & real_dev->vlan_features;
+        dev->features |= NETIF_F_LLTX;
         dev->gso_max_size = real_dev->gso_max_size;
 
         /* ipv6 shared card related stuff */
@@ -755,26 +710,20 @@ static int vlan_dev_init(struct net_device *dev)
         if (real_dev->features & NETIF_F_HW_VLAN_TX) {
                 dev->header_ops      = real_dev->header_ops;
                 dev->hard_header_len = real_dev->hard_header_len;
-                if (real_dev->netdev_ops->ndo_select_queue)
-                        dev->netdev_ops = &vlan_netdev_accel_ops_sq;
-                else
-                        dev->netdev_ops = &vlan_netdev_accel_ops;
         } else {
                 dev->header_ops      = &vlan_header_ops;
                 dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
-                if (real_dev->netdev_ops->ndo_select_queue)
-                        dev->netdev_ops = &vlan_netdev_ops_sq;
-                else
-                        dev->netdev_ops = &vlan_netdev_ops;
         }
 
+        dev->netdev_ops = &vlan_netdev_ops;
+
         if (is_vlan_dev(real_dev))
                 subclass = 1;
 
         vlan_dev_set_lockdep_class(dev, subclass);
 
-        vlan_dev_info(dev)->vlan_rx_stats = alloc_percpu(struct vlan_rx_stats);
-        if (!vlan_dev_info(dev)->vlan_rx_stats)
+        vlan_dev_info(dev)->vlan_pcpu_stats = alloc_percpu(struct vlan_pcpu_stats);
+        if (!vlan_dev_info(dev)->vlan_pcpu_stats)
                 return -ENOMEM;
 
         return 0;
@@ -786,8 +735,8 @@ static void vlan_dev_uninit(struct net_device *dev)
         struct vlan_dev_info *vlan = vlan_dev_info(dev);
         int i;
 
-        free_percpu(vlan->vlan_rx_stats);
-        vlan->vlan_rx_stats = NULL;
+        free_percpu(vlan->vlan_pcpu_stats);
+        vlan->vlan_pcpu_stats = NULL;
         for (i = 0; i < ARRAY_SIZE(vlan->egress_priority_map); i++) {
                 while ((pm = vlan->egress_priority_map[i]) != NULL) {
                         vlan->egress_priority_map[i] = pm->next;
@@ -825,33 +774,37 @@ static u32 vlan_ethtool_get_flags(struct net_device *dev)
 
 static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
 {
-        dev_txq_stats_fold(dev, stats);
 
-        if (vlan_dev_info(dev)->vlan_rx_stats) {
-                struct vlan_rx_stats *p, accum = {0};
+        if (vlan_dev_info(dev)->vlan_pcpu_stats) {
+                struct vlan_pcpu_stats *p;
+                u32 rx_errors = 0, tx_dropped = 0;
                 int i;
 
                 for_each_possible_cpu(i) {
-                        u64 rxpackets, rxbytes, rxmulticast;
+                        u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes;
                         unsigned int start;
 
-                        p = per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats, i);
+                        p = per_cpu_ptr(vlan_dev_info(dev)->vlan_pcpu_stats, i);
                         do {
                                 start = u64_stats_fetch_begin_bh(&p->syncp);
                                 rxpackets       = p->rx_packets;
                                 rxbytes         = p->rx_bytes;
                                 rxmulticast     = p->rx_multicast;
+                                txpackets       = p->tx_packets;
+                                txbytes         = p->tx_bytes;
                         } while (u64_stats_fetch_retry_bh(&p->syncp, start));
-                        accum.rx_packets += rxpackets;
-                        accum.rx_bytes   += rxbytes;
-                        accum.rx_multicast += rxmulticast;
-                        /* rx_errors is ulong, not protected by syncp */
-                        accum.rx_errors  += p->rx_errors;
+
+                        stats->rx_packets       += rxpackets;
+                        stats->rx_bytes         += rxbytes;
+                        stats->multicast        += rxmulticast;
+                        stats->tx_packets       += txpackets;
+                        stats->tx_bytes         += txbytes;
+                        /* rx_errors & tx_dropped are u32 */
+                        rx_errors       += p->rx_errors;
+                        tx_dropped      += p->tx_dropped;
                 }
-                stats->rx_packets = accum.rx_packets;
-                stats->rx_bytes   = accum.rx_bytes;
-                stats->rx_errors  = accum.rx_errors;
-                stats->multicast  = accum.rx_multicast;
+                stats->rx_errors  = rx_errors;
+                stats->tx_dropped = tx_dropped;
         }
         return stats;
 }
@@ -908,80 +861,6 @@ static const struct net_device_ops vlan_netdev_ops = {
 #endif
 };
 
-static const struct net_device_ops vlan_netdev_accel_ops = {
-        .ndo_change_mtu         = vlan_dev_change_mtu,
-        .ndo_init               = vlan_dev_init,
-        .ndo_uninit             = vlan_dev_uninit,
-        .ndo_open               = vlan_dev_open,
-        .ndo_stop               = vlan_dev_stop,
-        .ndo_start_xmit =  vlan_dev_hwaccel_hard_start_xmit,
-        .ndo_validate_addr      = eth_validate_addr,
-        .ndo_set_mac_address    = vlan_dev_set_mac_address,
-        .ndo_set_rx_mode        = vlan_dev_set_rx_mode,
-        .ndo_set_multicast_list = vlan_dev_set_rx_mode,
-        .ndo_change_rx_flags    = vlan_dev_change_rx_flags,
-        .ndo_do_ioctl           = vlan_dev_ioctl,
-        .ndo_neigh_setup        = vlan_dev_neigh_setup,
-        .ndo_get_stats64        = vlan_dev_get_stats64,
-#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
-        .ndo_fcoe_ddp_setup     = vlan_dev_fcoe_ddp_setup,
-        .ndo_fcoe_ddp_done      = vlan_dev_fcoe_ddp_done,
-        .ndo_fcoe_enable        = vlan_dev_fcoe_enable,
-        .ndo_fcoe_disable       = vlan_dev_fcoe_disable,
-        .ndo_fcoe_get_wwn       = vlan_dev_fcoe_get_wwn,
-#endif
-};
-
-static const struct net_device_ops vlan_netdev_ops_sq = {
-        .ndo_select_queue       = vlan_dev_select_queue,
-        .ndo_change_mtu         = vlan_dev_change_mtu,
-        .ndo_init               = vlan_dev_init,
-        .ndo_uninit             = vlan_dev_uninit,
-        .ndo_open               = vlan_dev_open,
-        .ndo_stop               = vlan_dev_stop,
-        .ndo_start_xmit =  vlan_dev_hard_start_xmit,
-        .ndo_validate_addr      = eth_validate_addr,
-        .ndo_set_mac_address    = vlan_dev_set_mac_address,
-        .ndo_set_rx_mode        = vlan_dev_set_rx_mode,
-        .ndo_set_multicast_list = vlan_dev_set_rx_mode,
-        .ndo_change_rx_flags    = vlan_dev_change_rx_flags,
-        .ndo_do_ioctl           = vlan_dev_ioctl,
-        .ndo_neigh_setup        = vlan_dev_neigh_setup,
-        .ndo_get_stats64        = vlan_dev_get_stats64,
-#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
-        .ndo_fcoe_ddp_setup     = vlan_dev_fcoe_ddp_setup,
-        .ndo_fcoe_ddp_done      = vlan_dev_fcoe_ddp_done,
-        .ndo_fcoe_enable        = vlan_dev_fcoe_enable,
-        .ndo_fcoe_disable       = vlan_dev_fcoe_disable,
-        .ndo_fcoe_get_wwn       = vlan_dev_fcoe_get_wwn,
-#endif
-};
-
-static const struct net_device_ops vlan_netdev_accel_ops_sq = {
-        .ndo_select_queue       = vlan_dev_select_queue,
-        .ndo_change_mtu         = vlan_dev_change_mtu,
-        .ndo_init               = vlan_dev_init,
-        .ndo_uninit             = vlan_dev_uninit,
-        .ndo_open               = vlan_dev_open,
-        .ndo_stop               = vlan_dev_stop,
-        .ndo_start_xmit =  vlan_dev_hwaccel_hard_start_xmit,
-        .ndo_validate_addr      = eth_validate_addr,
-        .ndo_set_mac_address    = vlan_dev_set_mac_address,
-        .ndo_set_rx_mode        = vlan_dev_set_rx_mode,
-        .ndo_set_multicast_list = vlan_dev_set_rx_mode,
-        .ndo_change_rx_flags    = vlan_dev_change_rx_flags,
-        .ndo_do_ioctl           = vlan_dev_ioctl,
-        .ndo_neigh_setup        = vlan_dev_neigh_setup,
-        .ndo_get_stats64        = vlan_dev_get_stats64,
-#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
-        .ndo_fcoe_ddp_setup     = vlan_dev_fcoe_ddp_setup,
-        .ndo_fcoe_ddp_done      = vlan_dev_fcoe_ddp_done,
-        .ndo_fcoe_enable        = vlan_dev_fcoe_enable,
-        .ndo_fcoe_disable       = vlan_dev_fcoe_disable,
-        .ndo_fcoe_get_wwn       = vlan_dev_fcoe_get_wwn,
-#endif
-};
-
 void vlan_setup(struct net_device *dev)
 {
         ether_setup(dev);
diff --git a/net/8021q/vlan_netlink.c b/net/8021q/vlan_netlink.c
index ddc105734af7..be9a5c19a775 100644
--- a/net/8021q/vlan_netlink.c
+++ b/net/8021q/vlan_netlink.c
@@ -101,25 +101,6 @@ static int vlan_changelink(struct net_device *dev,
         return 0;
 }
 
-static int vlan_get_tx_queues(struct net *net,
-                              struct nlattr *tb[],
-                              unsigned int *num_tx_queues,
-                              unsigned int *real_num_tx_queues)
-{
-        struct net_device *real_dev;
-
-        if (!tb[IFLA_LINK])
-                return -EINVAL;
-
-        real_dev = __dev_get_by_index(net, nla_get_u32(tb[IFLA_LINK]));
-        if (!real_dev)
-                return -ENODEV;
-
-        *num_tx_queues      = real_dev->num_tx_queues;
-        *real_num_tx_queues = real_dev->real_num_tx_queues;
-        return 0;
-}
-
 static int vlan_newlink(struct net *src_net, struct net_device *dev,
                         struct nlattr *tb[], struct nlattr *data[])
 {
@@ -237,7 +218,6 @@ struct rtnl_link_ops vlan_link_ops __read_mostly = {
         .maxtype        = IFLA_VLAN_MAX,
         .policy         = vlan_policy,
         .priv_size      = sizeof(struct vlan_dev_info),
-        .get_tx_queues  = vlan_get_tx_queues,
         .setup          = vlan_setup,
         .validate       = vlan_validate,
         .newlink        = vlan_newlink,
diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c
index 80e280f56686..d1314cf18adf 100644
--- a/net/8021q/vlanproc.c
+++ b/net/8021q/vlanproc.c
@@ -280,7 +280,6 @@ static int vlandev_seq_show(struct seq_file *seq, void *offset)
         const struct vlan_dev_info *dev_info = vlan_dev_info(vlandev);
         struct rtnl_link_stats64 temp;
         const struct rtnl_link_stats64 *stats;
-        static const char fmt[] = "%30s %12lu\n";
         static const char fmt64[] = "%30s %12llu\n";
         int i;
 
@@ -299,10 +298,6 @@ static int vlandev_seq_show(struct seq_file *seq, void *offset)
         seq_puts(seq, "\n");
         seq_printf(seq, fmt64, "total frames transmitted", stats->tx_packets);
         seq_printf(seq, fmt64, "total bytes transmitted", stats->tx_bytes);
-        seq_printf(seq, fmt, "total headroom inc",
-                   dev_info->cnt_inc_headroom_on_tx);
-        seq_printf(seq, fmt, "total encap on xmit",
-                   dev_info->cnt_encap_on_xmit);
         seq_printf(seq, "Device: %s", dev_info->real_dev->name);
         /* now show all PRIORITY mappings relating to this VLAN */
         seq_printf(seq, "\nINGRESS priority mappings: "
diff --git a/net/9p/protocol.c b/net/9p/protocol.c
index 45c15f491401..798beac7f100 100644
--- a/net/9p/protocol.c
+++ b/net/9p/protocol.c
@@ -27,31 +27,16 @@
 
 #include <linux/module.h>
 #include <linux/errno.h>
+#include <linux/kernel.h>
 #include <linux/uaccess.h>
 #include <linux/slab.h>
 #include <linux/sched.h>
+#include <linux/stddef.h>
 #include <linux/types.h>
 #include <net/9p/9p.h>
 #include <net/9p/client.h>
 #include "protocol.h"
 
-#ifndef MIN
-#define MIN(a, b) (((a) < (b)) ? (a) : (b))
-#endif
-
-#ifndef MAX
-#define MAX(a, b) (((a) > (b)) ? (a) : (b))
-#endif
-
-#ifndef offset_of
-#define offset_of(type, memb) \
-        ((unsigned long)(&((type *)0)->memb))
-#endif
-#ifndef container_of
-#define container_of(obj, type, memb) \
-        ((type *)(((char *)obj) - offset_of(type, memb)))
-#endif
-
 static int
 p9pdu_writef(struct p9_fcall *pdu, int proto_version, const char *fmt, ...);
 
@@ -104,7 +89,7 @@ EXPORT_SYMBOL(p9stat_free);
 
 static size_t pdu_read(struct p9_fcall *pdu, void *data, size_t size)
 {
-        size_t len = MIN(pdu->size - pdu->offset, size);
+        size_t len = min(pdu->size - pdu->offset, size);
         memcpy(data, &pdu->sdata[pdu->offset], len);
         pdu->offset += len;
         return size - len;
@@ -112,7 +97,7 @@ static size_t pdu_read(struct p9_fcall *pdu, void *data, size_t size)
 
 static size_t pdu_write(struct p9_fcall *pdu, const void *data, size_t size)
 {
-        size_t len = MIN(pdu->capacity - pdu->size, size);
+        size_t len = min(pdu->capacity - pdu->size, size);
         memcpy(&pdu->sdata[pdu->size], data, len);
         pdu->size += len;
         return size - len;
@@ -121,7 +106,7 @@ static size_t pdu_write(struct p9_fcall *pdu, const void *data, size_t size)
 static size_t
 pdu_write_u(struct p9_fcall *pdu, const char __user *udata, size_t size)
 {
-        size_t len = MIN(pdu->capacity - pdu->size, size);
+        size_t len = min(pdu->capacity - pdu->size, size);
         if (copy_from_user(&pdu->sdata[pdu->size], udata, len))
                 len = 0;
 
@@ -201,7 +186,7 @@ p9pdu_vreadf(struct p9_fcall *pdu, int proto_version, const char *fmt,
                                 if (errcode)
                                         break;
 
-                                size = MAX(len, 0);
+                                size = max_t(int16_t, len, 0);
 
                                 *sptr = kmalloc(size + 1, GFP_KERNEL);
                                 if (*sptr == NULL) {
@@ -256,8 +241,8 @@ p9pdu_vreadf(struct p9_fcall *pdu, int proto_version, const char *fmt,
                                     p9pdu_readf(pdu, proto_version, "d", count);
                                 if (!errcode) {
                                         *count =
-                                            MIN(*count,
-                                                pdu->size - pdu->offset);
+                                            min_t(int32_t, *count,
+                                                  pdu->size - pdu->offset);
                                         *data = &pdu->sdata[pdu->offset];
                                 }
                         }
@@ -421,7 +406,7 @@ p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt,
                                 const char *sptr = va_arg(ap, const char *);
                                 int16_t len = 0;
                                 if (sptr)
-                                        len = MIN(strlen(sptr), USHRT_MAX);
+                                        len = min_t(int16_t, strlen(sptr), USHRT_MAX);
 
                                 errcode = p9pdu_writef(pdu, proto_version,
                                                                 "w", len);
diff --git a/net/Kconfig b/net/Kconfig
index 55fd82e9ffd9..ad0aafe903f8 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -214,12 +214,18 @@ source "net/ieee802154/Kconfig"
 source "net/sched/Kconfig"
 source "net/dcb/Kconfig"
 source "net/dns_resolver/Kconfig"
+source "net/batman-adv/Kconfig"
 
 config RPS
         boolean
         depends on SMP && SYSFS && USE_GENERIC_SMP_HELPERS
         default y
 
+config XPS
+        boolean
+        depends on SMP && SYSFS && USE_GENERIC_SMP_HELPERS
+        default y
+
 menu "Network testing"
 
 config NET_PKTGEN
diff --git a/net/Makefile b/net/Makefile
index 6b7bfd7f1416..a3330ebe2c53 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -69,3 +69,4 @@ endif
 obj-$(CONFIG_WIMAX)             += wimax/
 obj-$(CONFIG_DNS_RESOLVER)      += dns_resolver/
 obj-$(CONFIG_CEPH_LIB)          += ceph/
+obj-$(CONFIG_BATMAN_ADV)        += batman-adv/
diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index ad2b232a2055..fce2eae8d476 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -97,7 +97,7 @@ static LIST_HEAD(br2684_devs);
 
 static inline struct br2684_dev *BRPRIV(const struct net_device *net_dev)
 {
-        return (struct br2684_dev *)netdev_priv(net_dev);
+        return netdev_priv(net_dev);
 }
 
 static inline struct net_device *list_entry_brdev(const struct list_head *le)
diff --git a/net/atm/clip.c b/net/atm/clip.c
index ff956d1115bc..d257da50fcfb 100644
--- a/net/atm/clip.c
+++ b/net/atm/clip.c
@@ -502,7 +502,8 @@ static int clip_setentry(struct atm_vcc *vcc, __be32 ip)
         struct atmarp_entry *entry;
         int error;
         struct clip_vcc *clip_vcc;
-        struct flowi fl = { .nl_u = { .ip4_u = { .daddr = ip, .tos = 1}} };
+        struct flowi fl = { .fl4_dst = ip,
+                            .fl4_tos = 1 };
         struct rtable *rt;
 
         if (vcc->push != clip_push) {
diff --git a/net/atm/lec.c b/net/atm/lec.c
index 181d70c73d70..179e04bc99dd 100644
--- a/net/atm/lec.c
+++ b/net/atm/lec.c
@@ -816,8 +816,7 @@ static int lec_mcast_attach(struct atm_vcc *vcc, int arg)
         if (arg < 0 || arg >= MAX_LEC_ITF || !dev_lec[arg])
                 return -EINVAL;
         vcc->proto_data = dev_lec[arg];
-        return lec_mcast_make((struct lec_priv *)netdev_priv(dev_lec[arg]),
-                                vcc);
+        return lec_mcast_make(netdev_priv(dev_lec[arg]), vcc);
 }
 
 /* Initialize device. */
diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig
new file mode 100644
index 000000000000..6c051ad833eb
--- /dev/null
+++ b/net/batman-adv/Kconfig
@@ -0,0 +1,25 @@
+#
+# B.A.T.M.A.N meshing protocol
+#
+
+config BATMAN_ADV
+        tristate "B.A.T.M.A.N. Advanced Meshing Protocol"
+        depends on NET
+        default n
+        ---help---
+
+        B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is
+        a routing protocol for multi-hop ad-hoc mesh networks. The
+        networks may be wired or wireless. See
+        http://www.open-mesh.org/ for more information and user space
+        tools.
+
+config BATMAN_ADV_DEBUG
+        bool "B.A.T.M.A.N. debugging"
+        depends on BATMAN_ADV != n
+        ---help---
+
+          This is an option for use by developers; most people should
+          say N here. This enables compilation of support for
+          outputting debugging information to the kernel log. The
+          output is controlled via the module parameter debug.
diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile
new file mode 100644
index 000000000000..d936aeccd194
--- /dev/null
+++ b/net/batman-adv/Makefile
@@ -0,0 +1,39 @@
+#
+# Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+#
+# Marek Lindner, Simon Wunderlich
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of version 2 of the GNU General Public
+# License as published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA
+#
+
+obj-$(CONFIG_BATMAN_ADV) += batman-adv.o
+batman-adv-y += aggregation.o
+batman-adv-y += bat_debugfs.o
+batman-adv-y += bat_sysfs.o
+batman-adv-y += bitarray.o
+batman-adv-y += gateway_client.o
+batman-adv-y += gateway_common.o
+batman-adv-y += hard-interface.o
+batman-adv-y += hash.o
+batman-adv-y += icmp_socket.o
+batman-adv-y += main.o
+batman-adv-y += originator.o
+batman-adv-y += ring_buffer.o
+batman-adv-y += routing.o
+batman-adv-y += send.o
+batman-adv-y += soft-interface.o
+batman-adv-y += translation-table.o
+batman-adv-y += unicast.o
+batman-adv-y += vis.o
diff --git a/net/batman-adv/aggregation.c b/net/batman-adv/aggregation.c
new file mode 100644
index 000000000000..3850a3ecf947
--- /dev/null
+++ b/net/batman-adv/aggregation.c
@@ -0,0 +1,273 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "aggregation.h"
+#include "send.h"
+#include "routing.h"
+
+/* calculate the size of the hna information for a given packet */
+static int hna_len(struct batman_packet *batman_packet)
+{
+        return batman_packet->num_hna * ETH_ALEN;
+}
+
+/* return true if new_packet can be aggregated with forw_packet */
+static bool can_aggregate_with(struct batman_packet *new_batman_packet,
+                               int packet_len,
+                               unsigned long send_time,
+                               bool directlink,
+                               struct batman_if *if_incoming,
+                               struct forw_packet *forw_packet)
+{
+        struct batman_packet *batman_packet =
+                (struct batman_packet *)forw_packet->skb->data;
+        int aggregated_bytes = forw_packet->packet_len + packet_len;
+
+        /**
+         * we can aggregate the current packet to this aggregated packet
+         * if:
+         *
+         * - the send time is within our MAX_AGGREGATION_MS time
+         * - the resulting packet wont be bigger than
+         *   MAX_AGGREGATION_BYTES
+         */
+
+        if (time_before(send_time, forw_packet->send_time) &&
+            time_after_eq(send_time + msecs_to_jiffies(MAX_AGGREGATION_MS),
+                                        forw_packet->send_time) &&
+            (aggregated_bytes <= MAX_AGGREGATION_BYTES)) {
+
+                /**
+                 * check aggregation compatibility
+                 * -> direct link packets are broadcasted on
+                 *    their interface only
+                 * -> aggregate packet if the current packet is
+                 *    a "global" packet as well as the base
+                 *    packet
+                 */
+
+                /* packets without direct link flag and high TTL
+                 * are flooded through the net  */
+                if ((!directlink) &&
+                    (!(batman_packet->flags & DIRECTLINK)) &&
+                    (batman_packet->ttl != 1) &&
+
+                    /* own packets originating non-primary
+                     * interfaces leave only that interface */
+                    ((!forw_packet->own) ||
+                     (forw_packet->if_incoming->if_num == 0)))
+                        return true;
+
+                /* if the incoming packet is sent via this one
+                 * interface only - we still can aggregate */
+                if ((directlink) &&
+                    (new_batman_packet->ttl == 1) &&
+                    (forw_packet->if_incoming == if_incoming) &&
+
+                    /* packets from direct neighbors or
+                     * own secondary interface packets
+                     * (= secondary interface packets in general) */
+                    (batman_packet->flags & DIRECTLINK ||
+                     (forw_packet->own &&
+                      forw_packet->if_incoming->if_num != 0)))
+                        return true;
+        }
+
+        return false;
+}
+
+#define atomic_dec_not_zero(v)          atomic_add_unless((v), -1, 0)
+/* create a new aggregated packet and add this packet to it */
+static void new_aggregated_packet(unsigned char *packet_buff, int packet_len,
+                                  unsigned long send_time, bool direct_link,
+                                  struct batman_if *if_incoming,
+                                  int own_packet)
+{
+        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+        struct forw_packet *forw_packet_aggr;
+        unsigned char *skb_buff;
+
+        /* own packet should always be scheduled */
+        if (!own_packet) {
+                if (!atomic_dec_not_zero(&bat_priv->batman_queue_left)) {
+                        bat_dbg(DBG_BATMAN, bat_priv,
+                                "batman packet queue full\n");
+                        return;
+                }
+        }
+
+        forw_packet_aggr = kmalloc(sizeof(struct forw_packet), GFP_ATOMIC);
+        if (!forw_packet_aggr) {
+                if (!own_packet)
+                        atomic_inc(&bat_priv->batman_queue_left);
+                return;
+        }
+
+        if ((atomic_read(&bat_priv->aggregated_ogms)) &&
+            (packet_len < MAX_AGGREGATION_BYTES))
+                forw_packet_aggr->skb = dev_alloc_skb(MAX_AGGREGATION_BYTES +
+                                                      sizeof(struct ethhdr));
+        else
+                forw_packet_aggr->skb = dev_alloc_skb(packet_len +
+                                                      sizeof(struct ethhdr));
+
+        if (!forw_packet_aggr->skb) {
+                if (!own_packet)
+                        atomic_inc(&bat_priv->batman_queue_left);
+                kfree(forw_packet_aggr);
+                return;
+        }
+        skb_reserve(forw_packet_aggr->skb, sizeof(struct ethhdr));
+
+        INIT_HLIST_NODE(&forw_packet_aggr->list);
+
+        skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
+        forw_packet_aggr->packet_len = packet_len;
+        memcpy(skb_buff, packet_buff, packet_len);
+
+        forw_packet_aggr->own = own_packet;
+        forw_packet_aggr->if_incoming = if_incoming;
+        forw_packet_aggr->num_packets = 0;
+        forw_packet_aggr->direct_link_flags = 0;
+        forw_packet_aggr->send_time = send_time;
+
+        /* save packet direct link flag status */
+        if (direct_link)
+                forw_packet_aggr->direct_link_flags |= 1;
+
+        /* add new packet to packet list */
+        spin_lock_bh(&bat_priv->forw_bat_list_lock);
+        hlist_add_head(&forw_packet_aggr->list, &bat_priv->forw_bat_list);
+        spin_unlock_bh(&bat_priv->forw_bat_list_lock);
+
+        /* start timer for this packet */
+        INIT_DELAYED_WORK(&forw_packet_aggr->delayed_work,
+                          send_outstanding_bat_packet);
+        queue_delayed_work(bat_event_workqueue,
+                           &forw_packet_aggr->delayed_work,
+                           send_time - jiffies);
+}
+
+/* aggregate a new packet into the existing aggregation */
+static void aggregate(struct forw_packet *forw_packet_aggr,
+                      unsigned char *packet_buff,
+                      int packet_len,
+                      bool direct_link)
+{
+        unsigned char *skb_buff;
+
+        skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
+        memcpy(skb_buff, packet_buff, packet_len);
+        forw_packet_aggr->packet_len += packet_len;
+        forw_packet_aggr->num_packets++;
+
+        /* save packet direct link flag status */
+        if (direct_link)
+                forw_packet_aggr->direct_link_flags |=
+                        (1 << forw_packet_aggr->num_packets);
+}
+
+void add_bat_packet_to_list(struct bat_priv *bat_priv,
+                            unsigned char *packet_buff, int packet_len,
+                            struct batman_if *if_incoming, char own_packet,
+                            unsigned long send_time)
+{
+        /**
+         * _aggr -> pointer to the packet we want to aggregate with
+         * _pos -> pointer to the position in the queue
+         */
+        struct forw_packet *forw_packet_aggr = NULL, *forw_packet_pos = NULL;
+        struct hlist_node *tmp_node;
+        struct batman_packet *batman_packet =
+                (struct batman_packet *)packet_buff;
+        bool direct_link = batman_packet->flags & DIRECTLINK ? 1 : 0;
+
+        /* find position for the packet in the forward queue */
+        spin_lock_bh(&bat_priv->forw_bat_list_lock);
+        /* own packets are not to be aggregated */
+        if ((atomic_read(&bat_priv->aggregated_ogms)) && (!own_packet)) {
+                hlist_for_each_entry(forw_packet_pos, tmp_node,
+                                     &bat_priv->forw_bat_list, list) {
+                        if (can_aggregate_with(batman_packet,
+                                               packet_len,
+                                               send_time,
+                                               direct_link,
+                                               if_incoming,
+                                               forw_packet_pos)) {
+                                forw_packet_aggr = forw_packet_pos;
+                                break;
+                        }
+                }
+        }
+
+        /* nothing to aggregate with - either aggregation disabled or no
+         * suitable aggregation packet found */
+        if (!forw_packet_aggr) {
+                /* the following section can run without the lock */
+                spin_unlock_bh(&bat_priv->forw_bat_list_lock);
+
+                /**
+                 * if we could not aggregate this packet with one of the others
+                 * we hold it back for a while, so that it might be aggregated
+                 * later on
+                 */
+                if ((!own_packet) &&
+                    (atomic_read(&bat_priv->aggregated_ogms)))
+                        send_time += msecs_to_jiffies(MAX_AGGREGATION_MS);
+
+                new_aggregated_packet(packet_buff, packet_len,
+                                      send_time, direct_link,
+                                      if_incoming, own_packet);
+        } else {
+                aggregate(forw_packet_aggr,
+                          packet_buff, packet_len,
+                          direct_link);
+                spin_unlock_bh(&bat_priv->forw_bat_list_lock);
+        }
+}
+
+/* unpack the aggregated packets and process them one by one */
+void receive_aggr_bat_packet(struct ethhdr *ethhdr, unsigned char *packet_buff,
+                             int packet_len, struct batman_if *if_incoming)
+{
+        struct batman_packet *batman_packet;
+        int buff_pos = 0;
+        unsigned char *hna_buff;
+
+        batman_packet = (struct batman_packet *)packet_buff;
+
+        do {
+                /* network to host order for our 32bit seqno, and the
+                   orig_interval. */
+                batman_packet->seqno = ntohl(batman_packet->seqno);
+
+                hna_buff = packet_buff + buff_pos + BAT_PACKET_LEN;
+                receive_bat_packet(ethhdr, batman_packet,
+                                   hna_buff, hna_len(batman_packet),
+                                   if_incoming);
+
+                buff_pos += BAT_PACKET_LEN + hna_len(batman_packet);
+                batman_packet = (struct batman_packet *)
+                        (packet_buff + buff_pos);
+        } while (aggregated_packet(buff_pos, packet_len,
+                                   batman_packet->num_hna));
+}
diff --git a/net/batman-adv/aggregation.h b/net/batman-adv/aggregation.h
new file mode 100644
index 000000000000..71a91b3da913
--- /dev/null
+++ b/net/batman-adv/aggregation.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_AGGREGATION_H_
+#define _NET_BATMAN_ADV_AGGREGATION_H_
+
+#include "main.h"
+
+/* is there another aggregated packet here? */
+static inline int aggregated_packet(int buff_pos, int packet_len, int num_hna)
+{
+        int next_buff_pos = buff_pos + BAT_PACKET_LEN + (num_hna * ETH_ALEN);
+
+        return (next_buff_pos <= packet_len) &&
+                (next_buff_pos <= MAX_AGGREGATION_BYTES);
+}
+
+void add_bat_packet_to_list(struct bat_priv *bat_priv,
+                            unsigned char *packet_buff, int packet_len,
+                            struct batman_if *if_incoming, char own_packet,
+                            unsigned long send_time);
+void receive_aggr_bat_packet(struct ethhdr *ethhdr, unsigned char *packet_buff,
+                             int packet_len, struct batman_if *if_incoming);
+
+#endif /* _NET_BATMAN_ADV_AGGREGATION_H_ */
diff --git a/net/batman-adv/bat_debugfs.c b/net/batman-adv/bat_debugfs.c
new file mode 100644
index 000000000000..0ae81d07f102
--- /dev/null
+++ b/net/batman-adv/bat_debugfs.c
@@ -0,0 +1,360 @@
+/*
+ * Copyright (C) 2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+
+#include <linux/debugfs.h>
+
+#include "bat_debugfs.h"
+#include "translation-table.h"
+#include "originator.h"
+#include "hard-interface.h"
+#include "gateway_common.h"
+#include "gateway_client.h"
+#include "soft-interface.h"
+#include "vis.h"
+#include "icmp_socket.h"
+
+static struct dentry *bat_debugfs;
+
+#ifdef CONFIG_BATMAN_ADV_DEBUG
+#define LOG_BUFF_MASK (log_buff_len-1)
+#define LOG_BUFF(idx) (debug_log->log_buff[(idx) & LOG_BUFF_MASK])
+
+static int log_buff_len = LOG_BUF_LEN;
+
+static void emit_log_char(struct debug_log *debug_log, char c)
+{
+        LOG_BUFF(debug_log->log_end) = c;
+        debug_log->log_end++;
+
+        if (debug_log->log_end - debug_log->log_start > log_buff_len)
+                debug_log->log_start = debug_log->log_end - log_buff_len;
+}
+
+static int fdebug_log(struct debug_log *debug_log, char *fmt, ...)
+{
+        int printed_len;
+        va_list args;
+        static char debug_log_buf[256];
+        char *p;
+
+        if (!debug_log)
+                return 0;
+
+        spin_lock_bh(&debug_log->lock);
+        va_start(args, fmt);
+        printed_len = vscnprintf(debug_log_buf, sizeof(debug_log_buf),
+                                 fmt, args);
+        va_end(args);
+
+        for (p = debug_log_buf; *p != 0; p++)
+                emit_log_char(debug_log, *p);
+
+        spin_unlock_bh(&debug_log->lock);
+
+        wake_up(&debug_log->queue_wait);
+
+        return 0;
+}
+
+int debug_log(struct bat_priv *bat_priv, char *fmt, ...)
+{
+        va_list args;
+        char tmp_log_buf[256];
+
+        va_start(args, fmt);
+        vscnprintf(tmp_log_buf, sizeof(tmp_log_buf), fmt, args);
+        fdebug_log(bat_priv->debug_log, "[%10u] %s",
+                   (jiffies / HZ), tmp_log_buf);
+        va_end(args);
+
+        return 0;
+}
+
+static int log_open(struct inode *inode, struct file *file)
+{
+        nonseekable_open(inode, file);
+        file->private_data = inode->i_private;
+        inc_module_count();
+        return 0;
+}
+
+static int log_release(struct inode *inode, struct file *file)
+{
+        dec_module_count();
+        return 0;
+}
+
+static ssize_t log_read(struct file *file, char __user *buf,
+                        size_t count, loff_t *ppos)
+{
+        struct bat_priv *bat_priv = file->private_data;
+        struct debug_log *debug_log = bat_priv->debug_log;
+        int error, i = 0;
+        char c;
+
+        if ((file->f_flags & O_NONBLOCK) &&
+            !(debug_log->log_end - debug_log->log_start))
+                return -EAGAIN;
+
+        if ((!buf) || (count < 0))
+                return -EINVAL;
+
+        if (count == 0)
+                return 0;
+
+        if (!access_ok(VERIFY_WRITE, buf, count))
+                return -EFAULT;
+
+        error = wait_event_interruptible(debug_log->queue_wait,
+                                (debug_log->log_start - debug_log->log_end));
+
+        if (error)
+                return error;
+
+        spin_lock_bh(&debug_log->lock);
+
+        while ((!error) && (i < count) &&
+               (debug_log->log_start != debug_log->log_end)) {
+                c = LOG_BUFF(debug_log->log_start);
+
+                debug_log->log_start++;
+
+                spin_unlock_bh(&debug_log->lock);
+
+                error = __put_user(c, buf);
+
+                spin_lock_bh(&debug_log->lock);
+
+                buf++;
+                i++;
+
+        }
+
+        spin_unlock_bh(&debug_log->lock);
+
+        if (!error)
+                return i;
+
+        return error;
+}
+
+static unsigned int log_poll(struct file *file, poll_table *wait)
+{
+        struct bat_priv *bat_priv = file->private_data;
+        struct debug_log *debug_log = bat_priv->debug_log;
+
+        poll_wait(file, &debug_log->queue_wait, wait);
+
+        if (debug_log->log_end - debug_log->log_start)
+                return POLLIN | POLLRDNORM;
+
+        return 0;
+}
+
+static const struct file_operations log_fops = {
+        .open           = log_open,
+        .release        = log_release,
+        .read           = log_read,
+        .poll           = log_poll,
+        .llseek         = no_llseek,
+};
+
+static int debug_log_setup(struct bat_priv *bat_priv)
+{
+        struct dentry *d;
+
+        if (!bat_priv->debug_dir)
+                goto err;
+
+        bat_priv->debug_log = kzalloc(sizeof(struct debug_log), GFP_ATOMIC);
+        if (!bat_priv->debug_log)
+                goto err;
+
+        spin_lock_init(&bat_priv->debug_log->lock);
+        init_waitqueue_head(&bat_priv->debug_log->queue_wait);
+
+        d = debugfs_create_file("log", S_IFREG | S_IRUSR,
+                                bat_priv->debug_dir, bat_priv, &log_fops);
+        if (d)
+                goto err;
+
+        return 0;
+
+err:
+        return 1;
+}
+
+static void debug_log_cleanup(struct bat_priv *bat_priv)
+{
+        kfree(bat_priv->debug_log);
+        bat_priv->debug_log = NULL;
+}
+#else /* CONFIG_BATMAN_ADV_DEBUG */
+static int debug_log_setup(struct bat_priv *bat_priv)
+{
+        bat_priv->debug_log = NULL;
+        return 0;
+}
+
+static void debug_log_cleanup(struct bat_priv *bat_priv)
+{
+        return;
+}
+#endif
+
+static int originators_open(struct inode *inode, struct file *file)
+{
+        struct net_device *net_dev = (struct net_device *)inode->i_private;
+        return single_open(file, orig_seq_print_text, net_dev);
+}
+
+static int gateways_open(struct inode *inode, struct file *file)
+{
+        struct net_device *net_dev = (struct net_device *)inode->i_private;
+        return single_open(file, gw_client_seq_print_text, net_dev);
+}
+
+static int softif_neigh_open(struct inode *inode, struct file *file)
+{
+        struct net_device *net_dev = (struct net_device *)inode->i_private;
+        return single_open(file, softif_neigh_seq_print_text, net_dev);
+}
+
+static int transtable_global_open(struct inode *inode, struct file *file)
+{
+        struct net_device *net_dev = (struct net_device *)inode->i_private;
+        return single_open(file, hna_global_seq_print_text, net_dev);
+}
+
+static int transtable_local_open(struct inode *inode, struct file *file)
+{
+        struct net_device *net_dev = (struct net_device *)inode->i_private;
+        return single_open(file, hna_local_seq_print_text, net_dev);
+}
+
+static int vis_data_open(struct inode *inode, struct file *file)
+{
+        struct net_device *net_dev = (struct net_device *)inode->i_private;
+        return single_open(file, vis_seq_print_text, net_dev);
+}
+
+struct bat_debuginfo {
+        struct attribute attr;
+        const struct file_operations fops;
+};
+
+#define BAT_DEBUGINFO(_name, _mode, _open)      \
+struct bat_debuginfo bat_debuginfo_##_name = {  \
+        .attr = { .name = __stringify(_name),   \
+                  .mode = _mode, },             \
+        .fops = { .owner = THIS_MODULE,         \
+                  .open = _open,                \
+                  .read = seq_read,             \
+                  .llseek = seq_lseek,          \
+                  .release = single_release,    \
+                }                               \
+};
+
+static BAT_DEBUGINFO(originators, S_IRUGO, originators_open);
+static BAT_DEBUGINFO(gateways, S_IRUGO, gateways_open);
+static BAT_DEBUGINFO(softif_neigh, S_IRUGO, softif_neigh_open);
+static BAT_DEBUGINFO(transtable_global, S_IRUGO, transtable_global_open);
+static BAT_DEBUGINFO(transtable_local, S_IRUGO, transtable_local_open);
+static BAT_DEBUGINFO(vis_data, S_IRUGO, vis_data_open);
+
+static struct bat_debuginfo *mesh_debuginfos[] = {
+        &bat_debuginfo_originators,
+        &bat_debuginfo_gateways,
+        &bat_debuginfo_softif_neigh,
+        &bat_debuginfo_transtable_global,
+        &bat_debuginfo_transtable_local,
+        &bat_debuginfo_vis_data,
+        NULL,
+};
+
+void debugfs_init(void)
+{
+        bat_debugfs = debugfs_create_dir(DEBUGFS_BAT_SUBDIR, NULL);
+        if (bat_debugfs == ERR_PTR(-ENODEV))
+                bat_debugfs = NULL;
+}
+
+void debugfs_destroy(void)
+{
+        if (bat_debugfs) {
+                debugfs_remove_recursive(bat_debugfs);
+                bat_debugfs = NULL;
+        }
+}
+
+int debugfs_add_meshif(struct net_device *dev)
+{
+        struct bat_priv *bat_priv = netdev_priv(dev);
+        struct bat_debuginfo **bat_debug;
+        struct dentry *file;
+
+        if (!bat_debugfs)
+                goto out;
+
+        bat_priv->debug_dir = debugfs_create_dir(dev->name, bat_debugfs);
+        if (!bat_priv->debug_dir)
+                goto out;
+
+        bat_socket_setup(bat_priv);
+        debug_log_setup(bat_priv);
+
+        for (bat_debug = mesh_debuginfos; *bat_debug; ++bat_debug) {
+                file = debugfs_create_file(((*bat_debug)->attr).name,
+                                          S_IFREG | ((*bat_debug)->attr).mode,
+                                          bat_priv->debug_dir,
+                                          dev, &(*bat_debug)->fops);
+                if (!file) {
+                        bat_err(dev, "Can't add debugfs file: %s/%s\n",
+                                dev->name, ((*bat_debug)->attr).name);
+                        goto rem_attr;
+                }
+        }
+
+        return 0;
+rem_attr:
+        debugfs_remove_recursive(bat_priv->debug_dir);
+        bat_priv->debug_dir = NULL;
+out:
+#ifdef CONFIG_DEBUG_FS
+        return -ENOMEM;
+#else
+        return 0;
+#endif /* CONFIG_DEBUG_FS */
+}
+
+void debugfs_del_meshif(struct net_device *dev)
+{
+        struct bat_priv *bat_priv = netdev_priv(dev);
+
+        debug_log_cleanup(bat_priv);
+
+        if (bat_debugfs) {
+                debugfs_remove_recursive(bat_priv->debug_dir);
+                bat_priv->debug_dir = NULL;
+        }
+}
diff --git a/net/batman-adv/bat_debugfs.h b/net/batman-adv/bat_debugfs.h
new file mode 100644
index 000000000000..72df532b7d5f
--- /dev/null
+++ b/net/batman-adv/bat_debugfs.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+
+#ifndef _NET_BATMAN_ADV_DEBUGFS_H_
+#define _NET_BATMAN_ADV_DEBUGFS_H_
+
+#define DEBUGFS_BAT_SUBDIR "batman_adv"
+
+void debugfs_init(void);
+void debugfs_destroy(void);
+int debugfs_add_meshif(struct net_device *dev);
+void debugfs_del_meshif(struct net_device *dev);
+
+#endif /* _NET_BATMAN_ADV_DEBUGFS_H_ */
diff --git a/net/batman-adv/bat_sysfs.c b/net/batman-adv/bat_sysfs.c
new file mode 100644
index 000000000000..cd7bb51825f1
--- /dev/null
+++ b/net/batman-adv/bat_sysfs.c
@@ -0,0 +1,593 @@
+/*
+ * Copyright (C) 2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "bat_sysfs.h"
+#include "translation-table.h"
+#include "originator.h"
+#include "hard-interface.h"
+#include "gateway_common.h"
+#include "gateway_client.h"
+#include "vis.h"
+
+#define to_dev(obj)             container_of(obj, struct device, kobj)
+#define kobj_to_netdev(obj)     to_net_dev(to_dev(obj->parent))
+#define kobj_to_batpriv(obj)    netdev_priv(kobj_to_netdev(obj))
+
+/* Use this, if you have customized show and store functions */
+#define BAT_ATTR(_name, _mode, _show, _store)   \
+struct bat_attribute bat_attr_##_name = {       \
+        .attr = {.name = __stringify(_name),    \
+                 .mode = _mode },               \
+        .show   = _show,                        \
+        .store  = _store,                       \
+};
+
+#define BAT_ATTR_STORE_BOOL(_name, _post_func)                          \
+ssize_t store_##_name(struct kobject *kobj, struct attribute *attr,     \
+                      char *buff, size_t count)                         \
+{                                                                       \
+        struct net_device *net_dev = kobj_to_netdev(kobj);              \
+        struct bat_priv *bat_priv = netdev_priv(net_dev);               \
+        return __store_bool_attr(buff, count, _post_func, attr,         \
+                                 &bat_priv->_name, net_dev);            \
+}
+
+#define BAT_ATTR_SHOW_BOOL(_name)                                       \
+ssize_t show_##_name(struct kobject *kobj, struct attribute *attr,      \
+                            char *buff)                                 \
+{                                                                       \
+        struct bat_priv *bat_priv = kobj_to_batpriv(kobj);              \
+        return sprintf(buff, "%s\n",                                    \
+                       atomic_read(&bat_priv->_name) == 0 ?             \
+                       "disabled" : "enabled");                         \
+}                                                                       \
+
+/* Use this, if you are going to turn a [name] in bat_priv on or off */
+#define BAT_ATTR_BOOL(_name, _mode, _post_func)                         \
+        static BAT_ATTR_STORE_BOOL(_name, _post_func)                   \
+        static BAT_ATTR_SHOW_BOOL(_name)                                \
+        static BAT_ATTR(_name, _mode, show_##_name, store_##_name)
+
+
+#define BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func)              \
+ssize_t store_##_name(struct kobject *kobj, struct attribute *attr,     \
+                             char *buff, size_t count)                  \
+{                                                                       \
+        struct net_device *net_dev = kobj_to_netdev(kobj);              \
+        struct bat_priv *bat_priv = netdev_priv(net_dev);               \
+        return __store_uint_attr(buff, count, _min, _max, _post_func,   \
+                                 attr, &bat_priv->_name, net_dev);      \
+}
+
+#define BAT_ATTR_SHOW_UINT(_name)                                       \
+ssize_t show_##_name(struct kobject *kobj, struct attribute *attr,      \
+                            char *buff)                                 \
+{                                                                       \
+        struct bat_priv *bat_priv = kobj_to_batpriv(kobj);              \
+        return sprintf(buff, "%i\n", atomic_read(&bat_priv->_name));    \
+}                                                                       \
+
+/* Use this, if you are going to set [name] in bat_priv to unsigned integer
+ * values only */
+#define BAT_ATTR_UINT(_name, _mode, _min, _max, _post_func)             \
+        static BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func)       \
+        static BAT_ATTR_SHOW_UINT(_name)                                \
+        static BAT_ATTR(_name, _mode, show_##_name, store_##_name)
+
+
+static int store_bool_attr(char *buff, size_t count,
+                           struct net_device *net_dev,
+                           char *attr_name, atomic_t *attr)
+{
+        int enabled = -1;
+
+        if (buff[count - 1] == '\n')
+                buff[count - 1] = '\0';
+
+        if ((strncmp(buff, "1", 2) == 0) ||
+            (strncmp(buff, "enable", 7) == 0) ||
+            (strncmp(buff, "enabled", 8) == 0))
+                enabled = 1;
+
+        if ((strncmp(buff, "0", 2) == 0) ||
+            (strncmp(buff, "disable", 8) == 0) ||
+            (strncmp(buff, "disabled", 9) == 0))
+                enabled = 0;
+
+        if (enabled < 0) {
+                bat_info(net_dev,
+                         "%s: Invalid parameter received: %s\n",
+                         attr_name, buff);
+                return -EINVAL;
+        }
+
+        if (atomic_read(attr) == enabled)
+                return count;
+
+        bat_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name,
+                 atomic_read(attr) == 1 ? "enabled" : "disabled",
+                 enabled == 1 ? "enabled" : "disabled");
+
+        atomic_set(attr, (unsigned)enabled);
+        return count;
+}
+
+static inline ssize_t __store_bool_attr(char *buff, size_t count,
+                        void (*post_func)(struct net_device *),
+                        struct attribute *attr,
+                        atomic_t *attr_store, struct net_device *net_dev)
+{
+        int ret;
+
+        ret = store_bool_attr(buff, count, net_dev, (char *)attr->name,
+                              attr_store);
+        if (post_func && ret)
+                post_func(net_dev);
+
+        return ret;
+}
+
+static int store_uint_attr(char *buff, size_t count,
+                           struct net_device *net_dev, char *attr_name,
+                           unsigned int min, unsigned int max, atomic_t *attr)
+{
+        unsigned long uint_val;
+        int ret;
+
+        ret = strict_strtoul(buff, 10, &uint_val);
+        if (ret) {
+                bat_info(net_dev,
+                         "%s: Invalid parameter received: %s\n",
+                         attr_name, buff);
+                return -EINVAL;
+        }
+
+        if (uint_val < min) {
+                bat_info(net_dev, "%s: Value is too small: %lu min: %u\n",
+                         attr_name, uint_val, min);
+                return -EINVAL;
+        }
+
+        if (uint_val > max) {
+                bat_info(net_dev, "%s: Value is too big: %lu max: %u\n",
+                         attr_name, uint_val, max);
+                return -EINVAL;
+        }
+
+        if (atomic_read(attr) == uint_val)
+                return count;
+
+        bat_info(net_dev, "%s: Changing from: %i to: %lu\n",
+                 attr_name, atomic_read(attr), uint_val);
+
+        atomic_set(attr, uint_val);
+        return count;
+}
+
+static inline ssize_t __store_uint_attr(char *buff, size_t count,
+                        int min, int max,
+                        void (*post_func)(struct net_device *),
+                        struct attribute *attr,
+                        atomic_t *attr_store, struct net_device *net_dev)
+{
+        int ret;
+
+        ret = store_uint_attr(buff, count, net_dev, (char *)attr->name,
+                              min, max, attr_store);
+        if (post_func && ret)
+                post_func(net_dev);
+
+        return ret;
+}
+
+static ssize_t show_vis_mode(struct kobject *kobj, struct attribute *attr,
+                             char *buff)
+{
+        struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
+        int vis_mode = atomic_read(&bat_priv->vis_mode);
+
+        return sprintf(buff, "%s\n",
+                       vis_mode == VIS_TYPE_CLIENT_UPDATE ?
+                                                        "client" : "server");
+}
+
+static ssize_t store_vis_mode(struct kobject *kobj, struct attribute *attr,
+                              char *buff, size_t count)
+{
+        struct net_device *net_dev = kobj_to_netdev(kobj);
+        struct bat_priv *bat_priv = netdev_priv(net_dev);
+        unsigned long val;
+        int ret, vis_mode_tmp = -1;
+
+        ret = strict_strtoul(buff, 10, &val);
+
+        if (((count == 2) && (!ret) && (val == VIS_TYPE_CLIENT_UPDATE)) ||
+            (strncmp(buff, "client", 6) == 0) ||
+            (strncmp(buff, "off", 3) == 0))
+                vis_mode_tmp = VIS_TYPE_CLIENT_UPDATE;
+
+        if (((count == 2) && (!ret) && (val == VIS_TYPE_SERVER_SYNC)) ||
+            (strncmp(buff, "server", 6) == 0))
+                vis_mode_tmp = VIS_TYPE_SERVER_SYNC;
+
+        if (vis_mode_tmp < 0) {
+                if (buff[count - 1] == '\n')
+                        buff[count - 1] = '\0';
+
+                bat_info(net_dev,
+                         "Invalid parameter for 'vis mode' setting received: "
+                         "%s\n", buff);
+                return -EINVAL;
+        }
+
+        if (atomic_read(&bat_priv->vis_mode) == vis_mode_tmp)
+                return count;
+
+        bat_info(net_dev, "Changing vis mode from: %s to: %s\n",
+                 atomic_read(&bat_priv->vis_mode) == VIS_TYPE_CLIENT_UPDATE ?
+                 "client" : "server", vis_mode_tmp == VIS_TYPE_CLIENT_UPDATE ?
+                 "client" : "server");
+
+        atomic_set(&bat_priv->vis_mode, (unsigned)vis_mode_tmp);
+        return count;
+}
+
+static void post_gw_deselect(struct net_device *net_dev)
+{
+        struct bat_priv *bat_priv = netdev_priv(net_dev);
+        gw_deselect(bat_priv);
+}
+
+static ssize_t show_gw_mode(struct kobject *kobj, struct attribute *attr,
+                            char *buff)
+{
+        struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
+        int bytes_written;
+
+        switch (atomic_read(&bat_priv->gw_mode)) {
+        case GW_MODE_CLIENT:
+                bytes_written = sprintf(buff, "%s\n", GW_MODE_CLIENT_NAME);
+                break;
+        case GW_MODE_SERVER:
+                bytes_written = sprintf(buff, "%s\n", GW_MODE_SERVER_NAME);
+                break;
+        default:
+                bytes_written = sprintf(buff, "%s\n", GW_MODE_OFF_NAME);
+                break;
+        }
+
+        return bytes_written;
+}
+
+static ssize_t store_gw_mode(struct kobject *kobj, struct attribute *attr,
+                             char *buff, size_t count)
+{
+        struct net_device *net_dev = kobj_to_netdev(kobj);
+        struct bat_priv *bat_priv = netdev_priv(net_dev);
+        char *curr_gw_mode_str;
+        int gw_mode_tmp = -1;
+
+        if (buff[count - 1] == '\n')
+                buff[count - 1] = '\0';
+
+        if (strncmp(buff, GW_MODE_OFF_NAME, strlen(GW_MODE_OFF_NAME)) == 0)
+                gw_mode_tmp = GW_MODE_OFF;
+
+        if (strncmp(buff, GW_MODE_CLIENT_NAME,
+                   strlen(GW_MODE_CLIENT_NAME)) == 0)
+                gw_mode_tmp = GW_MODE_CLIENT;
+
+        if (strncmp(buff, GW_MODE_SERVER_NAME,
+                   strlen(GW_MODE_SERVER_NAME)) == 0)
+                gw_mode_tmp = GW_MODE_SERVER;
+
+        if (gw_mode_tmp < 0) {
+                bat_info(net_dev,
+                         "Invalid parameter for 'gw mode' setting received: "
+                         "%s\n", buff);
+                return -EINVAL;
+        }
+
+        if (atomic_read(&bat_priv->gw_mode) == gw_mode_tmp)
+                return count;
+
+        switch (atomic_read(&bat_priv->gw_mode)) {
+        case GW_MODE_CLIENT:
+                curr_gw_mode_str = GW_MODE_CLIENT_NAME;
+                break;
+        case GW_MODE_SERVER:
+                curr_gw_mode_str = GW_MODE_SERVER_NAME;
+                break;
+        default:
+                curr_gw_mode_str = GW_MODE_OFF_NAME;
+                break;
+        }
+
+        bat_info(net_dev, "Changing gw mode from: %s to: %s\n",
+                 curr_gw_mode_str, buff);
+
+        gw_deselect(bat_priv);
+        atomic_set(&bat_priv->gw_mode, (unsigned)gw_mode_tmp);
+        return count;
+}
+
+static ssize_t show_gw_bwidth(struct kobject *kobj, struct attribute *attr,
+                              char *buff)
+{
+        struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
+        int down, up;
+        int gw_bandwidth = atomic_read(&bat_priv->gw_bandwidth);
+
+        gw_bandwidth_to_kbit(gw_bandwidth, &down, &up);
+        return sprintf(buff, "%i%s/%i%s\n",
+                       (down > 2048 ? down / 1024 : down),
+                       (down > 2048 ? "MBit" : "KBit"),
+                       (up > 2048 ? up / 1024 : up),
+                       (up > 2048 ? "MBit" : "KBit"));
+}
+
+static ssize_t store_gw_bwidth(struct kobject *kobj, struct attribute *attr,
+                               char *buff, size_t count)
+{
+        struct net_device *net_dev = kobj_to_netdev(kobj);
+
+        if (buff[count - 1] == '\n')
+                buff[count - 1] = '\0';
+
+        return gw_bandwidth_set(net_dev, buff, count);
+}
+
+BAT_ATTR_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL);
+BAT_ATTR_BOOL(bonding, S_IRUGO | S_IWUSR, NULL);
+BAT_ATTR_BOOL(fragmentation, S_IRUGO | S_IWUSR, update_min_mtu);
+static BAT_ATTR(vis_mode, S_IRUGO | S_IWUSR, show_vis_mode, store_vis_mode);
+static BAT_ATTR(gw_mode, S_IRUGO | S_IWUSR, show_gw_mode, store_gw_mode);
+BAT_ATTR_UINT(orig_interval, S_IRUGO | S_IWUSR, 2 * JITTER, INT_MAX, NULL);
+BAT_ATTR_UINT(hop_penalty, S_IRUGO | S_IWUSR, 0, TQ_MAX_VALUE, NULL);
+BAT_ATTR_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, TQ_MAX_VALUE,
+              post_gw_deselect);
+static BAT_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, show_gw_bwidth,
+                store_gw_bwidth);
+#ifdef CONFIG_BATMAN_ADV_DEBUG
+BAT_ATTR_UINT(log_level, S_IRUGO | S_IWUSR, 0, 3, NULL);
+#endif
+
+static struct bat_attribute *mesh_attrs[] = {
+        &bat_attr_aggregated_ogms,
+        &bat_attr_bonding,
+        &bat_attr_fragmentation,
+        &bat_attr_vis_mode,
+        &bat_attr_gw_mode,
+        &bat_attr_orig_interval,
+        &bat_attr_hop_penalty,
+        &bat_attr_gw_sel_class,
+        &bat_attr_gw_bandwidth,
+#ifdef CONFIG_BATMAN_ADV_DEBUG
+        &bat_attr_log_level,
+#endif
+        NULL,
+};
+
+int sysfs_add_meshif(struct net_device *dev)
+{
+        struct kobject *batif_kobject = &dev->dev.kobj;
+        struct bat_priv *bat_priv = netdev_priv(dev);
+        struct bat_attribute **bat_attr;
+        int err;
+
+        bat_priv->mesh_obj = kobject_create_and_add(SYSFS_IF_MESH_SUBDIR,
+                                                    batif_kobject);
+        if (!bat_priv->mesh_obj) {
+                bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
+                        SYSFS_IF_MESH_SUBDIR);
+                goto out;
+        }
+
+        for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr) {
+                err = sysfs_create_file(bat_priv->mesh_obj,
+                                        &((*bat_attr)->attr));
+                if (err) {
+                        bat_err(dev, "Can't add sysfs file: %s/%s/%s\n",
+                                dev->name, SYSFS_IF_MESH_SUBDIR,
+                                ((*bat_attr)->attr).name);
+                        goto rem_attr;
+                }
+        }
+
+        return 0;
+
+rem_attr:
+        for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
+                sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
+
+        kobject_put(bat_priv->mesh_obj);
+        bat_priv->mesh_obj = NULL;
+out:
+        return -ENOMEM;
+}
+
+void sysfs_del_meshif(struct net_device *dev)
+{
+        struct bat_priv *bat_priv = netdev_priv(dev);
+        struct bat_attribute **bat_attr;
+
+        for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
+                sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
+
+        kobject_put(bat_priv->mesh_obj);
+        bat_priv->mesh_obj = NULL;
+}
+
+static ssize_t show_mesh_iface(struct kobject *kobj, struct attribute *attr,
+                               char *buff)
+{
+        struct net_device *net_dev = kobj_to_netdev(kobj);
+        struct batman_if *batman_if = get_batman_if_by_netdev(net_dev);
+        ssize_t length;
+
+        if (!batman_if)
+                return 0;
+
+        length = sprintf(buff, "%s\n", batman_if->if_status == IF_NOT_IN_USE ?
+                         "none" : batman_if->soft_iface->name);
+
+        kref_put(&batman_if->refcount, hardif_free_ref);
+
+        return length;
+}
+
+static ssize_t store_mesh_iface(struct kobject *kobj, struct attribute *attr,
+                                char *buff, size_t count)
+{
+        struct net_device *net_dev = kobj_to_netdev(kobj);
+        struct batman_if *batman_if = get_batman_if_by_netdev(net_dev);
+        int status_tmp = -1;
+        int ret;
+
+        if (!batman_if)
+                return count;
+
+        if (buff[count - 1] == '\n')
+                buff[count - 1] = '\0';
+
+        if (strlen(buff) >= IFNAMSIZ) {
+                pr_err("Invalid parameter for 'mesh_iface' setting received: "
+                       "interface name too long '%s'\n", buff);
+                kref_put(&batman_if->refcount, hardif_free_ref);
+                return -EINVAL;
+        }
+
+        if (strncmp(buff, "none", 4) == 0)
+                status_tmp = IF_NOT_IN_USE;
+        else
+                status_tmp = IF_I_WANT_YOU;
+
+        if ((batman_if->if_status == status_tmp) || ((batman_if->soft_iface) &&
+            (strncmp(batman_if->soft_iface->name, buff, IFNAMSIZ) == 0))) {
+                kref_put(&batman_if->refcount, hardif_free_ref);
+                return count;
+        }
+
+        if (status_tmp == IF_NOT_IN_USE) {
+                rtnl_lock();
+                hardif_disable_interface(batman_if);
+                rtnl_unlock();
+                kref_put(&batman_if->refcount, hardif_free_ref);
+                return count;
+        }
+
+        /* if the interface already is in use */
+        if (batman_if->if_status != IF_NOT_IN_USE) {
+                rtnl_lock();
+                hardif_disable_interface(batman_if);
+                rtnl_unlock();
+        }
+
+        ret = hardif_enable_interface(batman_if, buff);
+        kref_put(&batman_if->refcount, hardif_free_ref);
+
+        return ret;
+}
+
+static ssize_t show_iface_status(struct kobject *kobj, struct attribute *attr,
+                                 char *buff)
+{
+        struct net_device *net_dev = kobj_to_netdev(kobj);
+        struct batman_if *batman_if = get_batman_if_by_netdev(net_dev);
+        ssize_t length;
+
+        if (!batman_if)
+                return 0;
+
+        switch (batman_if->if_status) {
+        case IF_TO_BE_REMOVED:
+                length = sprintf(buff, "disabling\n");
+                break;
+        case IF_INACTIVE:
+                length = sprintf(buff, "inactive\n");
+                break;
+        case IF_ACTIVE:
+                length = sprintf(buff, "active\n");
+                break;
+        case IF_TO_BE_ACTIVATED:
+                length = sprintf(buff, "enabling\n");
+                break;
+        case IF_NOT_IN_USE:
+        default:
+                length = sprintf(buff, "not in use\n");
+                break;
+        }
+
+        kref_put(&batman_if->refcount, hardif_free_ref);
+
+        return length;
+}
+
+static BAT_ATTR(mesh_iface, S_IRUGO | S_IWUSR,
+                show_mesh_iface, store_mesh_iface);
+static BAT_ATTR(iface_status, S_IRUGO, show_iface_status, NULL);
+
+static struct bat_attribute *batman_attrs[] = {
+        &bat_attr_mesh_iface,
+        &bat_attr_iface_status,
+        NULL,
+};
+
+int sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev)
+{
+        struct kobject *hardif_kobject = &dev->dev.kobj;
+        struct bat_attribute **bat_attr;
+        int err;
+
+        *hardif_obj = kobject_create_and_add(SYSFS_IF_BAT_SUBDIR,
+                                                    hardif_kobject);
+
+        if (!*hardif_obj) {
+                bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
+                        SYSFS_IF_BAT_SUBDIR);
+                goto out;
+        }
+
+        for (bat_attr = batman_attrs; *bat_attr; ++bat_attr) {
+                err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr));
+                if (err) {
+                        bat_err(dev, "Can't add sysfs file: %s/%s/%s\n",
+                                dev->name, SYSFS_IF_BAT_SUBDIR,
+                                ((*bat_attr)->attr).name);
+                        goto rem_attr;
+                }
+        }
+
+        return 0;
+
+rem_attr:
+        for (bat_attr = batman_attrs; *bat_attr; ++bat_attr)
+                sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr));
+out:
+        return -ENOMEM;
+}
+
+void sysfs_del_hardif(struct kobject **hardif_obj)
+{
+        kobject_put(*hardif_obj);
+        *hardif_obj = NULL;
+}
diff --git a/net/batman-adv/bat_sysfs.h b/net/batman-adv/bat_sysfs.h
new file mode 100644
index 000000000000..7f186c007b4f
--- /dev/null
+++ b/net/batman-adv/bat_sysfs.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+
+#ifndef _NET_BATMAN_ADV_SYSFS_H_
+#define _NET_BATMAN_ADV_SYSFS_H_
+
+#define SYSFS_IF_MESH_SUBDIR "mesh"
+#define SYSFS_IF_BAT_SUBDIR "batman_adv"
+
+struct bat_attribute {
+        struct attribute attr;
+        ssize_t (*show)(struct kobject *kobj, struct attribute *attr,
+                        char *buf);
+        ssize_t (*store)(struct kobject *kobj, struct attribute *attr,
+                         char *buf, size_t count);
+};
+
+int sysfs_add_meshif(struct net_device *dev);
+void sysfs_del_meshif(struct net_device *dev);
+int sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev);
+void sysfs_del_hardif(struct kobject **hardif_obj);
+
+#endif /* _NET_BATMAN_ADV_SYSFS_H_ */
diff --git a/net/batman-adv/bitarray.c b/net/batman-adv/bitarray.c
new file mode 100644
index 000000000000..bbcd8f744cdd
--- /dev/null
+++ b/net/batman-adv/bitarray.c
@@ -0,0 +1,201 @@
+/*
+ * Copyright (C) 2006-2010 B.A.T.M.A.N. contributors:
+ *
+ * Simon Wunderlich, Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "bitarray.h"
+
+#include <linux/bitops.h>
+
+/* returns true if the corresponding bit in the given seq_bits indicates true
+ * and curr_seqno is within range of last_seqno */
+uint8_t get_bit_status(unsigned long *seq_bits, uint32_t last_seqno,
+                       uint32_t curr_seqno)
+{
+        int32_t diff, word_offset, word_num;
+
+        diff = last_seqno - curr_seqno;
+        if (diff < 0 || diff >= TQ_LOCAL_WINDOW_SIZE) {
+                return 0;
+        } else {
+                /* which word */
+                word_num = (last_seqno - curr_seqno) / WORD_BIT_SIZE;
+                /* which position in the selected word */
+                word_offset = (last_seqno - curr_seqno) % WORD_BIT_SIZE;
+
+                if (test_bit(word_offset, &seq_bits[word_num]))
+                        return 1;
+                else
+                        return 0;
+        }
+}
+
+/* turn corresponding bit on, so we can remember that we got the packet */
+void bit_mark(unsigned long *seq_bits, int32_t n)
+{
+        int32_t word_offset, word_num;
+
+        /* if too old, just drop it */
+        if (n < 0 || n >= TQ_LOCAL_WINDOW_SIZE)
+                return;
+
+        /* which word */
+        word_num = n / WORD_BIT_SIZE;
+        /* which position in the selected word */
+        word_offset = n % WORD_BIT_SIZE;
+
+        set_bit(word_offset, &seq_bits[word_num]); /* turn the position on */
+}
+
+/* shift the packet array by n places. */
+static void bit_shift(unsigned long *seq_bits, int32_t n)
+{
+        int32_t word_offset, word_num;
+        int32_t i;
+
+        if (n <= 0 || n >= TQ_LOCAL_WINDOW_SIZE)
+                return;
+
+        word_offset = n % WORD_BIT_SIZE;/* shift how much inside each word */
+        word_num = n / WORD_BIT_SIZE;   /* shift over how much (full) words */
+
+        for (i = NUM_WORDS - 1; i > word_num; i--) {
+                /* going from old to new, so we don't overwrite the data we copy
+                 * from.
+                 *
+                 * left is high, right is low: FEDC BA98 7654 3210
+                 *                                        ^^ ^^
+                 *                             vvvv
+                 * ^^^^ = from, vvvvv =to, we'd have word_num==1 and
+                 * word_offset==WORD_BIT_SIZE/2 ????? in this example.
+                 * (=24 bits)
+                 *
+                 * our desired output would be: 9876 5432 1000 0000
+                 * */
+
+                seq_bits[i] =
+                        (seq_bits[i - word_num] << word_offset) +
+                        /* take the lower port from the left half, shift it left
+                         * to its final position */
+                        (seq_bits[i - word_num - 1] >>
+                         (WORD_BIT_SIZE-word_offset));
+                /* and the upper part of the right half and shift it left to
+                 * it's position */
+                /* for our example that would be: word[0] = 9800 + 0076 =
+                 * 9876 */
+        }
+        /* now for our last word, i==word_num, we only have the it's "left"
+         * half. that's the 1000 word in our example.*/
+
+        seq_bits[i] = (seq_bits[i - word_num] << word_offset);
+
+        /* pad the rest with 0, if there is anything */
+        i--;
+
+        for (; i >= 0; i--)
+                seq_bits[i] = 0;
+}
+
+static void bit_reset_window(unsigned long *seq_bits)
+{
+        int i;
+        for (i = 0; i < NUM_WORDS; i++)
+                seq_bits[i] = 0;
+}
+
+
+/* receive and process one packet within the sequence number window.
+ *
+ * returns:
+ *  1 if the window was moved (either new or very old)
+ *  0 if the window was not moved/shifted.
+ */
+char bit_get_packet(void *priv, unsigned long *seq_bits,
+                    int32_t seq_num_diff, int8_t set_mark)
+{
+        struct bat_priv *bat_priv = (struct bat_priv *)priv;
+
+        /* sequence number is slightly older. We already got a sequence number
+         * higher than this one, so we just mark it. */
+
+        if ((seq_num_diff <= 0) && (seq_num_diff > -TQ_LOCAL_WINDOW_SIZE)) {
+                if (set_mark)
+                        bit_mark(seq_bits, -seq_num_diff);
+                return 0;
+        }
+
+        /* sequence number is slightly newer, so we shift the window and
+         * set the mark if required */
+
+        if ((seq_num_diff > 0) && (seq_num_diff < TQ_LOCAL_WINDOW_SIZE)) {
+                bit_shift(seq_bits, seq_num_diff);
+
+                if (set_mark)
+                        bit_mark(seq_bits, 0);
+                return 1;
+        }
+
+        /* sequence number is much newer, probably missed a lot of packets */
+
+        if ((seq_num_diff >= TQ_LOCAL_WINDOW_SIZE)
+                || (seq_num_diff < EXPECTED_SEQNO_RANGE)) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "We missed a lot of packets (%i) !\n",
+                        seq_num_diff - 1);
+                bit_reset_window(seq_bits);
+                if (set_mark)
+                        bit_mark(seq_bits, 0);
+                return 1;
+        }
+
+        /* received a much older packet. The other host either restarted
+         * or the old packet got delayed somewhere in the network. The
+         * packet should be dropped without calling this function if the
+         * seqno window is protected. */
+
+        if ((seq_num_diff <= -TQ_LOCAL_WINDOW_SIZE)
+                || (seq_num_diff >= EXPECTED_SEQNO_RANGE)) {
+
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Other host probably restarted!\n");
+
+                bit_reset_window(seq_bits);
+                if (set_mark)
+                        bit_mark(seq_bits, 0);
+
+                return 1;
+        }
+
+        /* never reached */
+        return 0;
+}
+
+/* count the hamming weight, how many good packets did we receive? just count
+ * the 1's.
+ */
+int bit_packet_count(unsigned long *seq_bits)
+{
+        int i, hamming = 0;
+
+        for (i = 0; i < NUM_WORDS; i++)
+                hamming += hweight_long(seq_bits[i]);
+
+        return hamming;
+}
diff --git a/net/batman-adv/bitarray.h b/net/batman-adv/bitarray.h
new file mode 100644
index 000000000000..ac54017601b1
--- /dev/null
+++ b/net/batman-adv/bitarray.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2006-2010 B.A.T.M.A.N. contributors:
+ *
+ * Simon Wunderlich, Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_BITARRAY_H_
+#define _NET_BATMAN_ADV_BITARRAY_H_
+
+#define WORD_BIT_SIZE (sizeof(unsigned long) * 8)
+
+/* returns true if the corresponding bit in the given seq_bits indicates true
+ * and curr_seqno is within range of last_seqno */
+uint8_t get_bit_status(unsigned long *seq_bits, uint32_t last_seqno,
+                                           uint32_t curr_seqno);
+
+/* turn corresponding bit on, so we can remember that we got the packet */
+void bit_mark(unsigned long *seq_bits, int32_t n);
+
+
+/* receive and process one packet, returns 1 if received seq_num is considered
+ * new, 0 if old  */
+char bit_get_packet(void *priv, unsigned long *seq_bits,
+                    int32_t seq_num_diff, int8_t set_mark);
+
+/* count the hamming weight, how many good packets did we receive? */
+int  bit_packet_count(unsigned long *seq_bits);
+
+#endif /* _NET_BATMAN_ADV_BITARRAY_H_ */
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
new file mode 100644
index 000000000000..0065ffb8d96d
--- /dev/null
+++ b/net/batman-adv/gateway_client.c
@@ -0,0 +1,477 @@
+/*
+ * Copyright (C) 2009-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "gateway_client.h"
+#include "gateway_common.h"
+#include "hard-interface.h"
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/udp.h>
+#include <linux/if_vlan.h>
+
+static void gw_node_free_ref(struct kref *refcount)
+{
+        struct gw_node *gw_node;
+
+        gw_node = container_of(refcount, struct gw_node, refcount);
+        kfree(gw_node);
+}
+
+static void gw_node_free_rcu(struct rcu_head *rcu)
+{
+        struct gw_node *gw_node;
+
+        gw_node = container_of(rcu, struct gw_node, rcu);
+        kref_put(&gw_node->refcount, gw_node_free_ref);
+}
+
+void *gw_get_selected(struct bat_priv *bat_priv)
+{
+        struct gw_node *curr_gateway_tmp = bat_priv->curr_gw;
+
+        if (!curr_gateway_tmp)
+                return NULL;
+
+        return curr_gateway_tmp->orig_node;
+}
+
+void gw_deselect(struct bat_priv *bat_priv)
+{
+        struct gw_node *gw_node = bat_priv->curr_gw;
+
+        bat_priv->curr_gw = NULL;
+
+        if (gw_node)
+                kref_put(&gw_node->refcount, gw_node_free_ref);
+}
+
+static struct gw_node *gw_select(struct bat_priv *bat_priv,
+                          struct gw_node *new_gw_node)
+{
+        struct gw_node *curr_gw_node = bat_priv->curr_gw;
+
+        if (new_gw_node)
+                kref_get(&new_gw_node->refcount);
+
+        bat_priv->curr_gw = new_gw_node;
+        return curr_gw_node;
+}
+
+void gw_election(struct bat_priv *bat_priv)
+{
+        struct hlist_node *node;
+        struct gw_node *gw_node, *curr_gw_tmp = NULL, *old_gw_node = NULL;
+        uint8_t max_tq = 0;
+        uint32_t max_gw_factor = 0, tmp_gw_factor = 0;
+        int down, up;
+
+        /**
+         * The batman daemon checks here if we already passed a full originator
+         * cycle in order to make sure we don't choose the first gateway we
+         * hear about. This check is based on the daemon's uptime which we
+         * don't have.
+         **/
+        if (atomic_read(&bat_priv->gw_mode) != GW_MODE_CLIENT)
+                return;
+
+        if (bat_priv->curr_gw)
+                return;
+
+        rcu_read_lock();
+        if (hlist_empty(&bat_priv->gw_list)) {
+                rcu_read_unlock();
+
+                if (bat_priv->curr_gw) {
+                        bat_dbg(DBG_BATMAN, bat_priv,
+                                "Removing selected gateway - "
+                                "no gateway in range\n");
+                        gw_deselect(bat_priv);
+                }
+
+                return;
+        }
+
+        hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw_list, list) {
+                if (!gw_node->orig_node->router)
+                        continue;
+
+                if (gw_node->deleted)
+                        continue;
+
+                switch (atomic_read(&bat_priv->gw_sel_class)) {
+                case 1: /* fast connection */
+                        gw_bandwidth_to_kbit(gw_node->orig_node->gw_flags,
+                                             &down, &up);
+
+                        tmp_gw_factor = (gw_node->orig_node->router->tq_avg *
+                                         gw_node->orig_node->router->tq_avg *
+                                         down * 100 * 100) /
+                                         (TQ_LOCAL_WINDOW_SIZE *
+                                         TQ_LOCAL_WINDOW_SIZE * 64);
+
+                        if ((tmp_gw_factor > max_gw_factor) ||
+                            ((tmp_gw_factor == max_gw_factor) &&
+                             (gw_node->orig_node->router->tq_avg > max_tq)))
+                                curr_gw_tmp = gw_node;
+                        break;
+
+                default: /**
+                          * 2:  stable connection (use best statistic)
+                          * 3:  fast-switch (use best statistic but change as
+                          *     soon as a better gateway appears)
+                          * XX: late-switch (use best statistic but change as
+                          *     soon as a better gateway appears which has
+                          *     $routing_class more tq points)
+                          **/
+                        if (gw_node->orig_node->router->tq_avg > max_tq)
+                                curr_gw_tmp = gw_node;
+                        break;
+                }
+
+                if (gw_node->orig_node->router->tq_avg > max_tq)
+                        max_tq = gw_node->orig_node->router->tq_avg;
+
+                if (tmp_gw_factor > max_gw_factor)
+                        max_gw_factor = tmp_gw_factor;
+        }
+
+        if (bat_priv->curr_gw != curr_gw_tmp) {
+                if ((bat_priv->curr_gw) && (!curr_gw_tmp))
+                        bat_dbg(DBG_BATMAN, bat_priv,
+                                "Removing selected gateway - "
+                                "no gateway in range\n");
+                else if ((!bat_priv->curr_gw) && (curr_gw_tmp))
+                        bat_dbg(DBG_BATMAN, bat_priv,
+                                "Adding route to gateway %pM "
+                                "(gw_flags: %i, tq: %i)\n",
+                                curr_gw_tmp->orig_node->orig,
+                                curr_gw_tmp->orig_node->gw_flags,
+                                curr_gw_tmp->orig_node->router->tq_avg);
+                else
+                        bat_dbg(DBG_BATMAN, bat_priv,
+                                "Changing route to gateway %pM "
+                                "(gw_flags: %i, tq: %i)\n",
+                                curr_gw_tmp->orig_node->orig,
+                                curr_gw_tmp->orig_node->gw_flags,
+                                curr_gw_tmp->orig_node->router->tq_avg);
+
+                old_gw_node = gw_select(bat_priv, curr_gw_tmp);
+        }
+
+        rcu_read_unlock();
+
+        /* the kfree() has to be outside of the rcu lock */
+        if (old_gw_node)
+                kref_put(&old_gw_node->refcount, gw_node_free_ref);
+}
+
+void gw_check_election(struct bat_priv *bat_priv, struct orig_node *orig_node)
+{
+        struct gw_node *curr_gateway_tmp = bat_priv->curr_gw;
+        uint8_t gw_tq_avg, orig_tq_avg;
+
+        if (!curr_gateway_tmp)
+                return;
+
+        if (!curr_gateway_tmp->orig_node)
+                goto deselect;
+
+        if (!curr_gateway_tmp->orig_node->router)
+                goto deselect;
+
+        /* this node already is the gateway */
+        if (curr_gateway_tmp->orig_node == orig_node)
+                return;
+
+        if (!orig_node->router)
+                return;
+
+        gw_tq_avg = curr_gateway_tmp->orig_node->router->tq_avg;
+        orig_tq_avg = orig_node->router->tq_avg;
+
+        /* the TQ value has to be better */
+        if (orig_tq_avg < gw_tq_avg)
+                return;
+
+        /**
+         * if the routing class is greater than 3 the value tells us how much
+         * greater the TQ value of the new gateway must be
+         **/
+        if ((atomic_read(&bat_priv->gw_sel_class) > 3) &&
+            (orig_tq_avg - gw_tq_avg < atomic_read(&bat_priv->gw_sel_class)))
+                return;
+
+        bat_dbg(DBG_BATMAN, bat_priv,
+                "Restarting gateway selection: better gateway found (tq curr: "
+                "%i, tq new: %i)\n",
+                gw_tq_avg, orig_tq_avg);
+
+deselect:
+        gw_deselect(bat_priv);
+}
+
+static void gw_node_add(struct bat_priv *bat_priv,
+                        struct orig_node *orig_node, uint8_t new_gwflags)
+{
+        struct gw_node *gw_node;
+        int down, up;
+
+        gw_node = kmalloc(sizeof(struct gw_node), GFP_ATOMIC);
+        if (!gw_node)
+                return;
+
+        memset(gw_node, 0, sizeof(struct gw_node));
+        INIT_HLIST_NODE(&gw_node->list);
+        gw_node->orig_node = orig_node;
+        kref_init(&gw_node->refcount);
+
+        spin_lock_bh(&bat_priv->gw_list_lock);
+        hlist_add_head_rcu(&gw_node->list, &bat_priv->gw_list);
+        spin_unlock_bh(&bat_priv->gw_list_lock);
+
+        gw_bandwidth_to_kbit(new_gwflags, &down, &up);
+        bat_dbg(DBG_BATMAN, bat_priv,
+                "Found new gateway %pM -> gw_class: %i - %i%s/%i%s\n",
+                orig_node->orig, new_gwflags,
+                (down > 2048 ? down / 1024 : down),
+                (down > 2048 ? "MBit" : "KBit"),
+                (up > 2048 ? up / 1024 : up),
+                (up > 2048 ? "MBit" : "KBit"));
+}
+
+void gw_node_update(struct bat_priv *bat_priv,
+                    struct orig_node *orig_node, uint8_t new_gwflags)
+{
+        struct hlist_node *node;
+        struct gw_node *gw_node;
+
+        rcu_read_lock();
+        hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw_list, list) {
+                if (gw_node->orig_node != orig_node)
+                        continue;
+
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Gateway class of originator %pM changed from "
+                        "%i to %i\n",
+                        orig_node->orig, gw_node->orig_node->gw_flags,
+                        new_gwflags);
+
+                gw_node->deleted = 0;
+
+                if (new_gwflags == 0) {
+                        gw_node->deleted = jiffies;
+                        bat_dbg(DBG_BATMAN, bat_priv,
+                                "Gateway %pM removed from gateway list\n",
+                                orig_node->orig);
+
+                        if (gw_node == bat_priv->curr_gw) {
+                                rcu_read_unlock();
+                                gw_deselect(bat_priv);
+                                return;
+                        }
+                }
+
+                rcu_read_unlock();
+                return;
+        }
+        rcu_read_unlock();
+
+        if (new_gwflags == 0)
+                return;
+
+        gw_node_add(bat_priv, orig_node, new_gwflags);
+}
+
+void gw_node_delete(struct bat_priv *bat_priv, struct orig_node *orig_node)
+{
+        return gw_node_update(bat_priv, orig_node, 0);
+}
+
+void gw_node_purge(struct bat_priv *bat_priv)
+{
+        struct gw_node *gw_node;
+        struct hlist_node *node, *node_tmp;
+        unsigned long timeout = 2 * PURGE_TIMEOUT * HZ;
+
+        spin_lock_bh(&bat_priv->gw_list_lock);
+
+        hlist_for_each_entry_safe(gw_node, node, node_tmp,
+                                  &bat_priv->gw_list, list) {
+                if (((!gw_node->deleted) ||
+                     (time_before(jiffies, gw_node->deleted + timeout))) &&
+                    atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE)
+                        continue;
+
+                if (bat_priv->curr_gw == gw_node)
+                        gw_deselect(bat_priv);
+
+                hlist_del_rcu(&gw_node->list);
+                call_rcu(&gw_node->rcu, gw_node_free_rcu);
+        }
+
+
+        spin_unlock_bh(&bat_priv->gw_list_lock);
+}
+
+static int _write_buffer_text(struct bat_priv *bat_priv,
+                              struct seq_file *seq, struct gw_node *gw_node)
+{
+        int down, up;
+
+        gw_bandwidth_to_kbit(gw_node->orig_node->gw_flags, &down, &up);
+
+        return seq_printf(seq, "%s %pM (%3i) %pM [%10s]: %3i - %i%s/%i%s\n",
+                       (bat_priv->curr_gw == gw_node ? "=>" : "  "),
+                       gw_node->orig_node->orig,
+                       gw_node->orig_node->router->tq_avg,
+                       gw_node->orig_node->router->addr,
+                       gw_node->orig_node->router->if_incoming->net_dev->name,
+                       gw_node->orig_node->gw_flags,
+                       (down > 2048 ? down / 1024 : down),
+                       (down > 2048 ? "MBit" : "KBit"),
+                       (up > 2048 ? up / 1024 : up),
+                       (up > 2048 ? "MBit" : "KBit"));
+}
+
+int gw_client_seq_print_text(struct seq_file *seq, void *offset)
+{
+        struct net_device *net_dev = (struct net_device *)seq->private;
+        struct bat_priv *bat_priv = netdev_priv(net_dev);
+        struct gw_node *gw_node;
+        struct hlist_node *node;
+        int gw_count = 0;
+
+        if (!bat_priv->primary_if) {
+
+                return seq_printf(seq, "BATMAN mesh %s disabled - please "
+                                  "specify interfaces to enable it\n",
+                                  net_dev->name);
+        }
+
+        if (bat_priv->primary_if->if_status != IF_ACTIVE) {
+
+                return seq_printf(seq, "BATMAN mesh %s disabled - "
+                                       "primary interface not active\n",
+                                       net_dev->name);
+        }
+
+        seq_printf(seq, "      %-12s (%s/%i) %17s [%10s]: gw_class ... "
+                   "[B.A.T.M.A.N. adv %s%s, MainIF/MAC: %s/%pM (%s)]\n",
+                   "Gateway", "#", TQ_MAX_VALUE, "Nexthop",
+                   "outgoingIF", SOURCE_VERSION, REVISION_VERSION_STR,
+                   bat_priv->primary_if->net_dev->name,
+                   bat_priv->primary_if->net_dev->dev_addr, net_dev->name);
+
+        rcu_read_lock();
+        hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw_list, list) {
+                if (gw_node->deleted)
+                        continue;
+
+                if (!gw_node->orig_node->router)
+                        continue;
+
+                _write_buffer_text(bat_priv, seq, gw_node);
+                gw_count++;
+        }
+        rcu_read_unlock();
+
+        if (gw_count == 0)
+                seq_printf(seq, "No gateways in range ...\n");
+
+        return 0;
+}
+
+int gw_is_target(struct bat_priv *bat_priv, struct sk_buff *skb)
+{
+        struct ethhdr *ethhdr;
+        struct iphdr *iphdr;
+        struct ipv6hdr *ipv6hdr;
+        struct udphdr *udphdr;
+        unsigned int header_len = 0;
+
+        if (atomic_read(&bat_priv->gw_mode) == GW_MODE_OFF)
+                return 0;
+
+        /* check for ethernet header */
+        if (!pskb_may_pull(skb, header_len + ETH_HLEN))
+                return 0;
+        ethhdr = (struct ethhdr *)skb->data;
+        header_len += ETH_HLEN;
+
+        /* check for initial vlan header */
+        if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) {
+                if (!pskb_may_pull(skb, header_len + VLAN_HLEN))
+                        return 0;
+                ethhdr = (struct ethhdr *)(skb->data + VLAN_HLEN);
+                header_len += VLAN_HLEN;
+        }
+
+        /* check for ip header */
+        switch (ntohs(ethhdr->h_proto)) {
+        case ETH_P_IP:
+                if (!pskb_may_pull(skb, header_len + sizeof(struct iphdr)))
+                        return 0;
+                iphdr = (struct iphdr *)(skb->data + header_len);
+                header_len += iphdr->ihl * 4;
+
+                /* check for udp header */
+                if (iphdr->protocol != IPPROTO_UDP)
+                        return 0;
+
+                break;
+        case ETH_P_IPV6:
+                if (!pskb_may_pull(skb, header_len + sizeof(struct ipv6hdr)))
+                        return 0;
+                ipv6hdr = (struct ipv6hdr *)(skb->data + header_len);
+                header_len += sizeof(struct ipv6hdr);
+
+                /* check for udp header */
+                if (ipv6hdr->nexthdr != IPPROTO_UDP)
+                        return 0;
+
+                break;
+        default:
+                return 0;
+        }
+
+        if (!pskb_may_pull(skb, header_len + sizeof(struct udphdr)))
+                return 0;
+        udphdr = (struct udphdr *)(skb->data + header_len);
+        header_len += sizeof(struct udphdr);
+
+        /* check for bootp port */
+        if ((ntohs(ethhdr->h_proto) == ETH_P_IP) &&
+             (ntohs(udphdr->dest) != 67))
+                return 0;
+
+        if ((ntohs(ethhdr->h_proto) == ETH_P_IPV6) &&
+            (ntohs(udphdr->dest) != 547))
+                return 0;
+
+        if (atomic_read(&bat_priv->gw_mode) == GW_MODE_SERVER)
+                return -1;
+
+        if (!bat_priv->curr_gw)
+                return 0;
+
+        return 1;
+}
diff --git a/net/batman-adv/gateway_client.h b/net/batman-adv/gateway_client.h
new file mode 100644
index 000000000000..4585e6549844
--- /dev/null
+++ b/net/batman-adv/gateway_client.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2009-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
+#define _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
+
+void gw_deselect(struct bat_priv *bat_priv);
+void gw_election(struct bat_priv *bat_priv);
+void *gw_get_selected(struct bat_priv *bat_priv);
+void gw_check_election(struct bat_priv *bat_priv, struct orig_node *orig_node);
+void gw_node_update(struct bat_priv *bat_priv,
+                    struct orig_node *orig_node, uint8_t new_gwflags);
+void gw_node_delete(struct bat_priv *bat_priv, struct orig_node *orig_node);
+void gw_node_purge(struct bat_priv *bat_priv);
+int gw_client_seq_print_text(struct seq_file *seq, void *offset);
+int gw_is_target(struct bat_priv *bat_priv, struct sk_buff *skb);
+
+#endif /* _NET_BATMAN_ADV_GATEWAY_CLIENT_H_ */
diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c
new file mode 100644
index 000000000000..b962982f017e
--- /dev/null
+++ b/net/batman-adv/gateway_common.c
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2009-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "gateway_common.h"
+#include "gateway_client.h"
+
+/* calculates the gateway class from kbit */
+static void kbit_to_gw_bandwidth(int down, int up, long *gw_srv_class)
+{
+        int mdown = 0, tdown, tup, difference;
+        uint8_t sbit, part;
+
+        *gw_srv_class = 0;
+        difference = 0x0FFFFFFF;
+
+        /* test all downspeeds */
+        for (sbit = 0; sbit < 2; sbit++) {
+                for (part = 0; part < 16; part++) {
+                        tdown = 32 * (sbit + 2) * (1 << part);
+
+                        if (abs(tdown - down) < difference) {
+                                *gw_srv_class = (sbit << 7) + (part << 3);
+                                difference = abs(tdown - down);
+                                mdown = tdown;
+                        }
+                }
+        }
+
+        /* test all upspeeds */
+        difference = 0x0FFFFFFF;
+
+        for (part = 0; part < 8; part++) {
+                tup = ((part + 1) * (mdown)) / 8;
+
+                if (abs(tup - up) < difference) {
+                        *gw_srv_class = (*gw_srv_class & 0xF8) | part;
+                        difference = abs(tup - up);
+                }
+        }
+}
+
+/* returns the up and downspeeds in kbit, calculated from the class */
+void gw_bandwidth_to_kbit(uint8_t gw_srv_class, int *down, int *up)
+{
+        char sbit = (gw_srv_class & 0x80) >> 7;
+        char dpart = (gw_srv_class & 0x78) >> 3;
+        char upart = (gw_srv_class & 0x07);
+
+        if (!gw_srv_class) {
+                *down = 0;
+                *up = 0;
+                return;
+        }
+
+        *down = 32 * (sbit + 2) * (1 << dpart);
+        *up = ((upart + 1) * (*down)) / 8;
+}
+
+static bool parse_gw_bandwidth(struct net_device *net_dev, char *buff,
+                               long *up, long *down)
+{
+        int ret, multi = 1;
+        char *slash_ptr, *tmp_ptr;
+
+        slash_ptr = strchr(buff, '/');
+        if (slash_ptr)
+                *slash_ptr = 0;
+
+        if (strlen(buff) > 4) {
+                tmp_ptr = buff + strlen(buff) - 4;
+
+                if (strnicmp(tmp_ptr, "mbit", 4) == 0)
+                        multi = 1024;
+
+                if ((strnicmp(tmp_ptr, "kbit", 4) == 0) ||
+                        (multi > 1))
+                        *tmp_ptr = '\0';
+        }
+
+        ret = strict_strtoul(buff, 10, down);
+        if (ret) {
+                bat_err(net_dev,
+                        "Download speed of gateway mode invalid: %s\n",
+                        buff);
+                return false;
+        }
+
+        *down *= multi;
+
+        /* we also got some upload info */
+        if (slash_ptr) {
+                multi = 1;
+
+                if (strlen(slash_ptr + 1) > 4) {
+                        tmp_ptr = slash_ptr + 1 - 4 + strlen(slash_ptr + 1);
+
+                        if (strnicmp(tmp_ptr, "mbit", 4) == 0)
+                                multi = 1024;
+
+                        if ((strnicmp(tmp_ptr, "kbit", 4) == 0) ||
+                                (multi > 1))
+                                *tmp_ptr = '\0';
+                }
+
+                ret = strict_strtoul(slash_ptr + 1, 10, up);
+                if (ret) {
+                        bat_err(net_dev,
+                                "Upload speed of gateway mode invalid: "
+                                "%s\n", slash_ptr + 1);
+                        return false;
+                }
+
+                *up *= multi;
+        }
+
+        return true;
+}
+
+ssize_t gw_bandwidth_set(struct net_device *net_dev, char *buff, size_t count)
+{
+        struct bat_priv *bat_priv = netdev_priv(net_dev);
+        long gw_bandwidth_tmp = 0, up = 0, down = 0;
+        bool ret;
+
+        ret = parse_gw_bandwidth(net_dev, buff, &up, &down);
+        if (!ret)
+                goto end;
+
+        if ((!down) || (down < 256))
+                down = 2000;
+
+        if (!up)
+                up = down / 5;
+
+        kbit_to_gw_bandwidth(down, up, &gw_bandwidth_tmp);
+
+        /**
+         * the gw bandwidth we guessed above might not match the given
+         * speeds, hence we need to calculate it back to show the number
+         * that is going to be propagated
+         **/
+        gw_bandwidth_to_kbit((uint8_t)gw_bandwidth_tmp,
+                             (int *)&down, (int *)&up);
+
+        gw_deselect(bat_priv);
+        bat_info(net_dev, "Changing gateway bandwidth from: '%i' to: '%ld' "
+                 "(propagating: %ld%s/%ld%s)\n",
+                 atomic_read(&bat_priv->gw_bandwidth), gw_bandwidth_tmp,
+                 (down > 2048 ? down / 1024 : down),
+                 (down > 2048 ? "MBit" : "KBit"),
+                 (up > 2048 ? up / 1024 : up),
+                 (up > 2048 ? "MBit" : "KBit"));
+
+        atomic_set(&bat_priv->gw_bandwidth, gw_bandwidth_tmp);
+
+end:
+        return count;
+}
diff --git a/net/batman-adv/gateway_common.h b/net/batman-adv/gateway_common.h
new file mode 100644
index 000000000000..5e728d0b7959
--- /dev/null
+++ b/net/batman-adv/gateway_common.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2009-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_GATEWAY_COMMON_H_
+#define _NET_BATMAN_ADV_GATEWAY_COMMON_H_
+
+enum gw_modes {
+        GW_MODE_OFF,
+        GW_MODE_CLIENT,
+        GW_MODE_SERVER,
+};
+
+#define GW_MODE_OFF_NAME        "off"
+#define GW_MODE_CLIENT_NAME     "client"
+#define GW_MODE_SERVER_NAME     "server"
+
+void gw_bandwidth_to_kbit(uint8_t gw_class, int *down, int *up);
+ssize_t gw_bandwidth_set(struct net_device *net_dev, char *buff, size_t count);
+
+#endif /* _NET_BATMAN_ADV_GATEWAY_COMMON_H_ */
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
new file mode 100644
index 000000000000..4f95777ce080
--- /dev/null
+++ b/net/batman-adv/hard-interface.c
@@ -0,0 +1,651 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "hard-interface.h"
+#include "soft-interface.h"
+#include "send.h"
+#include "translation-table.h"
+#include "routing.h"
+#include "bat_sysfs.h"
+#include "originator.h"
+#include "hash.h"
+
+#include <linux/if_arp.h>
+
+/* protect update critical side of if_list - but not the content */
+static DEFINE_SPINLOCK(if_list_lock);
+
+static void hardif_free_rcu(struct rcu_head *rcu)
+{
+        struct batman_if *batman_if;
+
+        batman_if = container_of(rcu, struct batman_if, rcu);
+        dev_put(batman_if->net_dev);
+        kref_put(&batman_if->refcount, hardif_free_ref);
+}
+
+struct batman_if *get_batman_if_by_netdev(struct net_device *net_dev)
+{
+        struct batman_if *batman_if;
+
+        rcu_read_lock();
+        list_for_each_entry_rcu(batman_if, &if_list, list) {
+                if (batman_if->net_dev == net_dev)
+                        goto out;
+        }
+
+        batman_if = NULL;
+
+out:
+        if (batman_if)
+                kref_get(&batman_if->refcount);
+
+        rcu_read_unlock();
+        return batman_if;
+}
+
+static int is_valid_iface(struct net_device *net_dev)
+{
+        if (net_dev->flags & IFF_LOOPBACK)
+                return 0;
+
+        if (net_dev->type != ARPHRD_ETHER)
+                return 0;
+
+        if (net_dev->addr_len != ETH_ALEN)
+                return 0;
+
+        /* no batman over batman */
+#ifdef HAVE_NET_DEVICE_OPS
+        if (net_dev->netdev_ops->ndo_start_xmit == interface_tx)
+                return 0;
+#else
+        if (net_dev->hard_start_xmit == interface_tx)
+                return 0;
+#endif
+
+        /* Device is being bridged */
+        /* if (net_dev->priv_flags & IFF_BRIDGE_PORT)
+                return 0; */
+
+        return 1;
+}
+
+static struct batman_if *get_active_batman_if(struct net_device *soft_iface)
+{
+        struct batman_if *batman_if;
+
+        rcu_read_lock();
+        list_for_each_entry_rcu(batman_if, &if_list, list) {
+                if (batman_if->soft_iface != soft_iface)
+                        continue;
+
+                if (batman_if->if_status == IF_ACTIVE)
+                        goto out;
+        }
+
+        batman_if = NULL;
+
+out:
+        if (batman_if)
+                kref_get(&batman_if->refcount);
+
+        rcu_read_unlock();
+        return batman_if;
+}
+
+static void update_primary_addr(struct bat_priv *bat_priv)
+{
+        struct vis_packet *vis_packet;
+
+        vis_packet = (struct vis_packet *)
+                                bat_priv->my_vis_info->skb_packet->data;
+        memcpy(vis_packet->vis_orig,
+               bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
+        memcpy(vis_packet->sender_orig,
+               bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
+}
+
+static void set_primary_if(struct bat_priv *bat_priv,
+                           struct batman_if *batman_if)
+{
+        struct batman_packet *batman_packet;
+        struct batman_if *old_if;
+
+        if (batman_if)
+                kref_get(&batman_if->refcount);
+
+        old_if = bat_priv->primary_if;
+        bat_priv->primary_if = batman_if;
+
+        if (old_if)
+                kref_put(&old_if->refcount, hardif_free_ref);
+
+        if (!bat_priv->primary_if)
+                return;
+
+        batman_packet = (struct batman_packet *)(batman_if->packet_buff);
+        batman_packet->flags = PRIMARIES_FIRST_HOP;
+        batman_packet->ttl = TTL;
+
+        update_primary_addr(bat_priv);
+
+        /***
+         * hacky trick to make sure that we send the HNA information via
+         * our new primary interface
+         */
+        atomic_set(&bat_priv->hna_local_changed, 1);
+}
+
+static bool hardif_is_iface_up(struct batman_if *batman_if)
+{
+        if (batman_if->net_dev->flags & IFF_UP)
+                return true;
+
+        return false;
+}
+
+static void update_mac_addresses(struct batman_if *batman_if)
+{
+        memcpy(((struct batman_packet *)(batman_if->packet_buff))->orig,
+               batman_if->net_dev->dev_addr, ETH_ALEN);
+        memcpy(((struct batman_packet *)(batman_if->packet_buff))->prev_sender,
+               batman_if->net_dev->dev_addr, ETH_ALEN);
+}
+
+static void check_known_mac_addr(struct net_device *net_dev)
+{
+        struct batman_if *batman_if;
+
+        rcu_read_lock();
+        list_for_each_entry_rcu(batman_if, &if_list, list) {
+                if ((batman_if->if_status != IF_ACTIVE) &&
+                    (batman_if->if_status != IF_TO_BE_ACTIVATED))
+                        continue;
+
+                if (batman_if->net_dev == net_dev)
+                        continue;
+
+                if (!compare_orig(batman_if->net_dev->dev_addr,
+                                  net_dev->dev_addr))
+                        continue;
+
+                pr_warning("The newly added mac address (%pM) already exists "
+                           "on: %s\n", net_dev->dev_addr,
+                           batman_if->net_dev->name);
+                pr_warning("It is strongly recommended to keep mac addresses "
+                           "unique to avoid problems!\n");
+        }
+        rcu_read_unlock();
+}
+
+int hardif_min_mtu(struct net_device *soft_iface)
+{
+        struct bat_priv *bat_priv = netdev_priv(soft_iface);
+        struct batman_if *batman_if;
+        /* allow big frames if all devices are capable to do so
+         * (have MTU > 1500 + BAT_HEADER_LEN) */
+        int min_mtu = ETH_DATA_LEN;
+
+        if (atomic_read(&bat_priv->fragmentation))
+                goto out;
+
+        rcu_read_lock();
+        list_for_each_entry_rcu(batman_if, &if_list, list) {
+                if ((batman_if->if_status != IF_ACTIVE) &&
+                    (batman_if->if_status != IF_TO_BE_ACTIVATED))
+                        continue;
+
+                if (batman_if->soft_iface != soft_iface)
+                        continue;
+
+                min_mtu = min_t(int, batman_if->net_dev->mtu - BAT_HEADER_LEN,
+                                min_mtu);
+        }
+        rcu_read_unlock();
+out:
+        return min_mtu;
+}
+
+/* adjusts the MTU if a new interface with a smaller MTU appeared. */
+void update_min_mtu(struct net_device *soft_iface)
+{
+        int min_mtu;
+
+        min_mtu = hardif_min_mtu(soft_iface);
+        if (soft_iface->mtu != min_mtu)
+                soft_iface->mtu = min_mtu;
+}
+
+static void hardif_activate_interface(struct batman_if *batman_if)
+{
+        struct bat_priv *bat_priv;
+
+        if (batman_if->if_status != IF_INACTIVE)
+                return;
+
+        bat_priv = netdev_priv(batman_if->soft_iface);
+
+        update_mac_addresses(batman_if);
+        batman_if->if_status = IF_TO_BE_ACTIVATED;
+
+        /**
+         * the first active interface becomes our primary interface or
+         * the next active interface after the old primay interface was removed
+         */
+        if (!bat_priv->primary_if)
+                set_primary_if(bat_priv, batman_if);
+
+        bat_info(batman_if->soft_iface, "Interface activated: %s\n",
+                 batman_if->net_dev->name);
+
+        update_min_mtu(batman_if->soft_iface);
+        return;
+}
+
+static void hardif_deactivate_interface(struct batman_if *batman_if)
+{
+        if ((batman_if->if_status != IF_ACTIVE) &&
+           (batman_if->if_status != IF_TO_BE_ACTIVATED))
+                return;
+
+        batman_if->if_status = IF_INACTIVE;
+
+        bat_info(batman_if->soft_iface, "Interface deactivated: %s\n",
+                 batman_if->net_dev->name);
+
+        update_min_mtu(batman_if->soft_iface);
+}
+
+int hardif_enable_interface(struct batman_if *batman_if, char *iface_name)
+{
+        struct bat_priv *bat_priv;
+        struct batman_packet *batman_packet;
+
+        if (batman_if->if_status != IF_NOT_IN_USE)
+                goto out;
+
+        batman_if->soft_iface = dev_get_by_name(&init_net, iface_name);
+
+        if (!batman_if->soft_iface) {
+                batman_if->soft_iface = softif_create(iface_name);
+
+                if (!batman_if->soft_iface)
+                        goto err;
+
+                /* dev_get_by_name() increases the reference counter for us */
+                dev_hold(batman_if->soft_iface);
+        }
+
+        bat_priv = netdev_priv(batman_if->soft_iface);
+        batman_if->packet_len = BAT_PACKET_LEN;
+        batman_if->packet_buff = kmalloc(batman_if->packet_len, GFP_ATOMIC);
+
+        if (!batman_if->packet_buff) {
+                bat_err(batman_if->soft_iface, "Can't add interface packet "
+                        "(%s): out of memory\n", batman_if->net_dev->name);
+                goto err;
+        }
+
+        batman_packet = (struct batman_packet *)(batman_if->packet_buff);
+        batman_packet->packet_type = BAT_PACKET;
+        batman_packet->version = COMPAT_VERSION;
+        batman_packet->flags = 0;
+        batman_packet->ttl = 2;
+        batman_packet->tq = TQ_MAX_VALUE;
+        batman_packet->num_hna = 0;
+
+        batman_if->if_num = bat_priv->num_ifaces;
+        bat_priv->num_ifaces++;
+        batman_if->if_status = IF_INACTIVE;
+        orig_hash_add_if(batman_if, bat_priv->num_ifaces);
+
+        batman_if->batman_adv_ptype.type = __constant_htons(ETH_P_BATMAN);
+        batman_if->batman_adv_ptype.func = batman_skb_recv;
+        batman_if->batman_adv_ptype.dev = batman_if->net_dev;
+        kref_get(&batman_if->refcount);
+        dev_add_pack(&batman_if->batman_adv_ptype);
+
+        atomic_set(&batman_if->seqno, 1);
+        atomic_set(&batman_if->frag_seqno, 1);
+        bat_info(batman_if->soft_iface, "Adding interface: %s\n",
+                 batman_if->net_dev->name);
+
+        if (atomic_read(&bat_priv->fragmentation) && batman_if->net_dev->mtu <
+                ETH_DATA_LEN + BAT_HEADER_LEN)
+                bat_info(batman_if->soft_iface,
+                        "The MTU of interface %s is too small (%i) to handle "
+                        "the transport of batman-adv packets. Packets going "
+                        "over this interface will be fragmented on layer2 "
+                        "which could impact the performance. Setting the MTU "
+                        "to %zi would solve the problem.\n",
+                        batman_if->net_dev->name, batman_if->net_dev->mtu,
+                        ETH_DATA_LEN + BAT_HEADER_LEN);
+
+        if (!atomic_read(&bat_priv->fragmentation) && batman_if->net_dev->mtu <
+                ETH_DATA_LEN + BAT_HEADER_LEN)
+                bat_info(batman_if->soft_iface,
+                        "The MTU of interface %s is too small (%i) to handle "
+                        "the transport of batman-adv packets. If you experience"
+                        " problems getting traffic through try increasing the "
+                        "MTU to %zi.\n",
+                        batman_if->net_dev->name, batman_if->net_dev->mtu,
+                        ETH_DATA_LEN + BAT_HEADER_LEN);
+
+        if (hardif_is_iface_up(batman_if))
+                hardif_activate_interface(batman_if);
+        else
+                bat_err(batman_if->soft_iface, "Not using interface %s "
+                        "(retrying later): interface not active\n",
+                        batman_if->net_dev->name);
+
+        /* begin scheduling originator messages on that interface */
+        schedule_own_packet(batman_if);
+
+out:
+        return 0;
+
+err:
+        return -ENOMEM;
+}
+
+void hardif_disable_interface(struct batman_if *batman_if)
+{
+        struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
+
+        if (batman_if->if_status == IF_ACTIVE)
+                hardif_deactivate_interface(batman_if);
+
+        if (batman_if->if_status != IF_INACTIVE)
+                return;
+
+        bat_info(batman_if->soft_iface, "Removing interface: %s\n",
+                 batman_if->net_dev->name);
+        dev_remove_pack(&batman_if->batman_adv_ptype);
+        kref_put(&batman_if->refcount, hardif_free_ref);
+
+        bat_priv->num_ifaces--;
+        orig_hash_del_if(batman_if, bat_priv->num_ifaces);
+
+        if (batman_if == bat_priv->primary_if) {
+                struct batman_if *new_if;
+
+                new_if = get_active_batman_if(batman_if->soft_iface);
+                set_primary_if(bat_priv, new_if);
+
+                if (new_if)
+                        kref_put(&new_if->refcount, hardif_free_ref);
+        }
+
+        kfree(batman_if->packet_buff);
+        batman_if->packet_buff = NULL;
+        batman_if->if_status = IF_NOT_IN_USE;
+
+        /* delete all references to this batman_if */
+        purge_orig_ref(bat_priv);
+        purge_outstanding_packets(bat_priv, batman_if);
+        dev_put(batman_if->soft_iface);
+
+        /* nobody uses this interface anymore */
+        if (!bat_priv->num_ifaces)
+                softif_destroy(batman_if->soft_iface);
+
+        batman_if->soft_iface = NULL;
+}
+
+static struct batman_if *hardif_add_interface(struct net_device *net_dev)
+{
+        struct batman_if *batman_if;
+        int ret;
+
+        ret = is_valid_iface(net_dev);
+        if (ret != 1)
+                goto out;
+
+        dev_hold(net_dev);
+
+        batman_if = kmalloc(sizeof(struct batman_if), GFP_ATOMIC);
+        if (!batman_if) {
+                pr_err("Can't add interface (%s): out of memory\n",
+                       net_dev->name);
+                goto release_dev;
+        }
+
+        ret = sysfs_add_hardif(&batman_if->hardif_obj, net_dev);
+        if (ret)
+                goto free_if;
+
+        batman_if->if_num = -1;
+        batman_if->net_dev = net_dev;
+        batman_if->soft_iface = NULL;
+        batman_if->if_status = IF_NOT_IN_USE;
+        INIT_LIST_HEAD(&batman_if->list);
+        kref_init(&batman_if->refcount);
+
+        check_known_mac_addr(batman_if->net_dev);
+
+        spin_lock(&if_list_lock);
+        list_add_tail_rcu(&batman_if->list, &if_list);
+        spin_unlock(&if_list_lock);
+
+        /* extra reference for return */
+        kref_get(&batman_if->refcount);
+        return batman_if;
+
+free_if:
+        kfree(batman_if);
+release_dev:
+        dev_put(net_dev);
+out:
+        return NULL;
+}
+
+static void hardif_remove_interface(struct batman_if *batman_if)
+{
+        /* first deactivate interface */
+        if (batman_if->if_status != IF_NOT_IN_USE)
+                hardif_disable_interface(batman_if);
+
+        if (batman_if->if_status != IF_NOT_IN_USE)
+                return;
+
+        batman_if->if_status = IF_TO_BE_REMOVED;
+        sysfs_del_hardif(&batman_if->hardif_obj);
+        call_rcu(&batman_if->rcu, hardif_free_rcu);
+}
+
+void hardif_remove_interfaces(void)
+{
+        struct batman_if *batman_if, *batman_if_tmp;
+        struct list_head if_queue;
+
+        INIT_LIST_HEAD(&if_queue);
+
+        spin_lock(&if_list_lock);
+        list_for_each_entry_safe(batman_if, batman_if_tmp, &if_list, list) {
+                list_del_rcu(&batman_if->list);
+                list_add_tail(&batman_if->list, &if_queue);
+        }
+        spin_unlock(&if_list_lock);
+
+        rtnl_lock();
+        list_for_each_entry_safe(batman_if, batman_if_tmp, &if_queue, list) {
+                hardif_remove_interface(batman_if);
+        }
+        rtnl_unlock();
+}
+
+static int hard_if_event(struct notifier_block *this,
+                         unsigned long event, void *ptr)
+{
+        struct net_device *net_dev = (struct net_device *)ptr;
+        struct batman_if *batman_if = get_batman_if_by_netdev(net_dev);
+        struct bat_priv *bat_priv;
+
+        if (!batman_if && event == NETDEV_REGISTER)
+                batman_if = hardif_add_interface(net_dev);
+
+        if (!batman_if)
+                goto out;
+
+        switch (event) {
+        case NETDEV_UP:
+                hardif_activate_interface(batman_if);
+                break;
+        case NETDEV_GOING_DOWN:
+        case NETDEV_DOWN:
+                hardif_deactivate_interface(batman_if);
+                break;
+        case NETDEV_UNREGISTER:
+                spin_lock(&if_list_lock);
+                list_del_rcu(&batman_if->list);
+                spin_unlock(&if_list_lock);
+
+                hardif_remove_interface(batman_if);
+                break;
+        case NETDEV_CHANGEMTU:
+                if (batman_if->soft_iface)
+                        update_min_mtu(batman_if->soft_iface);
+                break;
+        case NETDEV_CHANGEADDR:
+                if (batman_if->if_status == IF_NOT_IN_USE)
+                        goto hardif_put;
+
+                check_known_mac_addr(batman_if->net_dev);
+                update_mac_addresses(batman_if);
+
+                bat_priv = netdev_priv(batman_if->soft_iface);
+                if (batman_if == bat_priv->primary_if)
+                        update_primary_addr(bat_priv);
+                break;
+        default:
+                break;
+        };
+
+hardif_put:
+        kref_put(&batman_if->refcount, hardif_free_ref);
+out:
+        return NOTIFY_DONE;
+}
+
+/* receive a packet with the batman ethertype coming on a hard
+ * interface */
+int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
+        struct packet_type *ptype, struct net_device *orig_dev)
+{
+        struct bat_priv *bat_priv;
+        struct batman_packet *batman_packet;
+        struct batman_if *batman_if;
+        int ret;
+
+        batman_if = container_of(ptype, struct batman_if, batman_adv_ptype);
+        skb = skb_share_check(skb, GFP_ATOMIC);
+
+        /* skb was released by skb_share_check() */
+        if (!skb)
+                goto err_out;
+
+        /* packet should hold at least type and version */
+        if (unlikely(!pskb_may_pull(skb, 2)))
+                goto err_free;
+
+        /* expect a valid ethernet header here. */
+        if (unlikely(skb->mac_len != sizeof(struct ethhdr)
+                                || !skb_mac_header(skb)))
+                goto err_free;
+
+        if (!batman_if->soft_iface)
+                goto err_free;
+
+        bat_priv = netdev_priv(batman_if->soft_iface);
+
+        if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE)
+                goto err_free;
+
+        /* discard frames on not active interfaces */
+        if (batman_if->if_status != IF_ACTIVE)
+                goto err_free;
+
+        batman_packet = (struct batman_packet *)skb->data;
+
+        if (batman_packet->version != COMPAT_VERSION) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: incompatible batman version (%i)\n",
+                        batman_packet->version);
+                goto err_free;
+        }
+
+        /* all receive handlers return whether they received or reused
+         * the supplied skb. if not, we have to free the skb. */
+
+        switch (batman_packet->packet_type) {
+                /* batman originator packet */
+        case BAT_PACKET:
+                ret = recv_bat_packet(skb, batman_if);
+                break;
+
+                /* batman icmp packet */
+        case BAT_ICMP:
+                ret = recv_icmp_packet(skb, batman_if);
+                break;
+
+                /* unicast packet */
+        case BAT_UNICAST:
+                ret = recv_unicast_packet(skb, batman_if);
+                break;
+
+                /* fragmented unicast packet */
+        case BAT_UNICAST_FRAG:
+                ret = recv_ucast_frag_packet(skb, batman_if);
+                break;
+
+                /* broadcast packet */
+        case BAT_BCAST:
+                ret = recv_bcast_packet(skb, batman_if);
+                break;
+
+                /* vis packet */
+        case BAT_VIS:
+                ret = recv_vis_packet(skb, batman_if);
+                break;
+        default:
+                ret = NET_RX_DROP;
+        }
+
+        if (ret == NET_RX_DROP)
+                kfree_skb(skb);
+
+        /* return NET_RX_SUCCESS in any case as we
+         * most probably dropped the packet for
+         * routing-logical reasons. */
+
+        return NET_RX_SUCCESS;
+
+err_free:
+        kfree_skb(skb);
+err_out:
+        return NET_RX_DROP;
+}
+
+struct notifier_block hard_if_notifier = {
+        .notifier_call = hard_if_event,
+};
diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h
new file mode 100644
index 000000000000..30ec3b8db459
--- /dev/null
+++ b/net/batman-adv/hard-interface.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_
+#define _NET_BATMAN_ADV_HARD_INTERFACE_H_
+
+#define IF_NOT_IN_USE 0
+#define IF_TO_BE_REMOVED 1
+#define IF_INACTIVE 2
+#define IF_ACTIVE 3
+#define IF_TO_BE_ACTIVATED 4
+#define IF_I_WANT_YOU 5
+
+extern struct notifier_block hard_if_notifier;
+
+struct batman_if *get_batman_if_by_netdev(struct net_device *net_dev);
+int hardif_enable_interface(struct batman_if *batman_if, char *iface_name);
+void hardif_disable_interface(struct batman_if *batman_if);
+void hardif_remove_interfaces(void);
+int batman_skb_recv(struct sk_buff *skb,
+                                struct net_device *dev,
+                                struct packet_type *ptype,
+                                struct net_device *orig_dev);
+int hardif_min_mtu(struct net_device *soft_iface);
+void update_min_mtu(struct net_device *soft_iface);
+
+static inline void hardif_free_ref(struct kref *refcount)
+{
+        struct batman_if *batman_if;
+
+        batman_if = container_of(refcount, struct batman_if, refcount);
+        kfree(batman_if);
+}
+
+#endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */
diff --git a/net/batman-adv/hash.c b/net/batman-adv/hash.c
new file mode 100644
index 000000000000..26e623eb9def
--- /dev/null
+++ b/net/batman-adv/hash.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2006-2010 B.A.T.M.A.N. contributors:
+ *
+ * Simon Wunderlich, Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "hash.h"
+
+/* clears the hash */
+static void hash_init(struct hashtable_t *hash)
+{
+        int i;
+
+        for (i = 0 ; i < hash->size; i++)
+                INIT_HLIST_HEAD(&hash->table[i]);
+}
+
+/* free only the hashtable and the hash itself. */
+void hash_destroy(struct hashtable_t *hash)
+{
+        kfree(hash->table);
+        kfree(hash);
+}
+
+/* allocates and clears the hash */
+struct hashtable_t *hash_new(int size)
+{
+        struct hashtable_t *hash;
+
+        hash = kmalloc(sizeof(struct hashtable_t) , GFP_ATOMIC);
+
+        if (!hash)
+                return NULL;
+
+        hash->size = size;
+        hash->table = kmalloc(sizeof(struct element_t *) * size, GFP_ATOMIC);
+
+        if (!hash->table) {
+                kfree(hash);
+                return NULL;
+        }
+
+        hash_init(hash);
+
+        return hash;
+}
diff --git a/net/batman-adv/hash.h b/net/batman-adv/hash.h
new file mode 100644
index 000000000000..09216ade16f1
--- /dev/null
+++ b/net/batman-adv/hash.h
@@ -0,0 +1,176 @@
+/*
+ * Copyright (C) 2006-2010 B.A.T.M.A.N. contributors:
+ *
+ * Simon Wunderlich, Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_HASH_H_
+#define _NET_BATMAN_ADV_HASH_H_
+
+#include <linux/list.h>
+
+/* callback to a compare function.  should
+ * compare 2 element datas for their keys,
+ * return 0 if same and not 0 if not
+ * same */
+typedef int (*hashdata_compare_cb)(void *, void *);
+
+/* the hashfunction, should return an index
+ * based on the key in the data of the first
+ * argument and the size the second */
+typedef int (*hashdata_choose_cb)(void *, int);
+typedef void (*hashdata_free_cb)(void *, void *);
+
+struct element_t {
+        void *data;             /* pointer to the data */
+        struct hlist_node hlist;        /* bucket list pointer */
+};
+
+struct hashtable_t {
+        struct hlist_head *table;   /* the hashtable itself, with the buckets */
+        int size;                   /* size of hashtable */
+};
+
+/* allocates and clears the hash */
+struct hashtable_t *hash_new(int size);
+
+/* remove element if you already found the element you want to delete and don't
+ * need the overhead to find it again with hash_remove().  But usually, you
+ * don't want to use this function, as it fiddles with hash-internals. */
+void *hash_remove_element(struct hashtable_t *hash, struct element_t *elem);
+
+/* free only the hashtable and the hash itself. */
+void hash_destroy(struct hashtable_t *hash);
+
+/* remove the hash structure. if hashdata_free_cb != NULL, this function will be
+ * called to remove the elements inside of the hash.  if you don't remove the
+ * elements, memory might be leaked. */
+static inline void hash_delete(struct hashtable_t *hash,
+                               hashdata_free_cb free_cb, void *arg)
+{
+        struct hlist_head *head;
+        struct hlist_node *walk, *safe;
+        struct element_t *bucket;
+        int i;
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_safe(walk, safe, head) {
+                        bucket = hlist_entry(walk, struct element_t, hlist);
+                        if (free_cb)
+                                free_cb(bucket->data, arg);
+
+                        hlist_del(walk);
+                        kfree(bucket);
+                }
+        }
+
+        hash_destroy(hash);
+}
+
+/* adds data to the hashtable. returns 0 on success, -1 on error */
+static inline int hash_add(struct hashtable_t *hash,
+                           hashdata_compare_cb compare,
+                           hashdata_choose_cb choose, void *data)
+{
+        int index;
+        struct hlist_head *head;
+        struct hlist_node *walk, *safe;
+        struct element_t *bucket;
+
+        if (!hash)
+                return -1;
+
+        index = choose(data, hash->size);
+        head = &hash->table[index];
+
+        hlist_for_each_safe(walk, safe, head) {
+                bucket = hlist_entry(walk, struct element_t, hlist);
+                if (compare(bucket->data, data))
+                        return -1;
+        }
+
+        /* no duplicate found in list, add new element */
+        bucket = kmalloc(sizeof(struct element_t), GFP_ATOMIC);
+
+        if (!bucket)
+                return -1;
+
+        bucket->data = data;
+        hlist_add_head(&bucket->hlist, head);
+
+        return 0;
+}
+
+/* removes data from hash, if found. returns pointer do data on success, so you
+ * can remove the used structure yourself, or NULL on error .  data could be the
+ * structure you use with just the key filled, we just need the key for
+ * comparing. */
+static inline void *hash_remove(struct hashtable_t *hash,
+                                hashdata_compare_cb compare,
+                                hashdata_choose_cb choose, void *data)
+{
+        size_t index;
+        struct hlist_node *walk;
+        struct element_t *bucket;
+        struct hlist_head *head;
+        void *data_save;
+
+        index = choose(data, hash->size);
+        head = &hash->table[index];
+
+        hlist_for_each_entry(bucket, walk, head, hlist) {
+                if (compare(bucket->data, data)) {
+                        data_save = bucket->data;
+                        hlist_del(walk);
+                        kfree(bucket);
+                        return data_save;
+                }
+        }
+
+        return NULL;
+}
+
+/* finds data, based on the key in keydata. returns the found data on success,
+ * or NULL on error */
+static inline void *hash_find(struct hashtable_t *hash,
+                              hashdata_compare_cb compare,
+                              hashdata_choose_cb choose, void *keydata)
+{
+        int index;
+        struct hlist_head *head;
+        struct hlist_node *walk;
+        struct element_t *bucket;
+
+        if (!hash)
+                return NULL;
+
+        index = choose(keydata , hash->size);
+        head = &hash->table[index];
+
+        hlist_for_each(walk, head) {
+                bucket = hlist_entry(walk, struct element_t, hlist);
+                if (compare(bucket->data, keydata))
+                        return bucket->data;
+        }
+
+        return NULL;
+}
+
+#endif /* _NET_BATMAN_ADV_HASH_H_ */
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
new file mode 100644
index 000000000000..ecf6d7ffab2e
--- /dev/null
+++ b/net/batman-adv/icmp_socket.c
@@ -0,0 +1,356 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include <linux/debugfs.h>
+#include <linux/slab.h>
+#include "icmp_socket.h"
+#include "send.h"
+#include "types.h"
+#include "hash.h"
+#include "originator.h"
+#include "hard-interface.h"
+
+static struct socket_client *socket_client_hash[256];
+
+static void bat_socket_add_packet(struct socket_client *socket_client,
+                                  struct icmp_packet_rr *icmp_packet,
+                                  size_t icmp_len);
+
+void bat_socket_init(void)
+{
+        memset(socket_client_hash, 0, sizeof(socket_client_hash));
+}
+
+static int bat_socket_open(struct inode *inode, struct file *file)
+{
+        unsigned int i;
+        struct socket_client *socket_client;
+
+        nonseekable_open(inode, file);
+
+        socket_client = kmalloc(sizeof(struct socket_client), GFP_KERNEL);
+
+        if (!socket_client)
+                return -ENOMEM;
+
+        for (i = 0; i < ARRAY_SIZE(socket_client_hash); i++) {
+                if (!socket_client_hash[i]) {
+                        socket_client_hash[i] = socket_client;
+                        break;
+                }
+        }
+
+        if (i == ARRAY_SIZE(socket_client_hash)) {
+                pr_err("Error - can't add another packet client: "
+                       "maximum number of clients reached\n");
+                kfree(socket_client);
+                return -EXFULL;
+        }
+
+        INIT_LIST_HEAD(&socket_client->queue_list);
+        socket_client->queue_len = 0;
+        socket_client->index = i;
+        socket_client->bat_priv = inode->i_private;
+        spin_lock_init(&socket_client->lock);
+        init_waitqueue_head(&socket_client->queue_wait);
+
+        file->private_data = socket_client;
+
+        inc_module_count();
+        return 0;
+}
+
+static int bat_socket_release(struct inode *inode, struct file *file)
+{
+        struct socket_client *socket_client = file->private_data;
+        struct socket_packet *socket_packet;
+        struct list_head *list_pos, *list_pos_tmp;
+
+        spin_lock_bh(&socket_client->lock);
+
+        /* for all packets in the queue ... */
+        list_for_each_safe(list_pos, list_pos_tmp, &socket_client->queue_list) {
+                socket_packet = list_entry(list_pos,
+                                           struct socket_packet, list);
+
+                list_del(list_pos);
+                kfree(socket_packet);
+        }
+
+        socket_client_hash[socket_client->index] = NULL;
+        spin_unlock_bh(&socket_client->lock);
+
+        kfree(socket_client);
+        dec_module_count();
+
+        return 0;
+}
+
+static ssize_t bat_socket_read(struct file *file, char __user *buf,
+                               size_t count, loff_t *ppos)
+{
+        struct socket_client *socket_client = file->private_data;
+        struct socket_packet *socket_packet;
+        size_t packet_len;
+        int error;
+
+        if ((file->f_flags & O_NONBLOCK) && (socket_client->queue_len == 0))
+                return -EAGAIN;
+
+        if ((!buf) || (count < sizeof(struct icmp_packet)))
+                return -EINVAL;
+
+        if (!access_ok(VERIFY_WRITE, buf, count))
+                return -EFAULT;
+
+        error = wait_event_interruptible(socket_client->queue_wait,
+                                         socket_client->queue_len);
+
+        if (error)
+                return error;
+
+        spin_lock_bh(&socket_client->lock);
+
+        socket_packet = list_first_entry(&socket_client->queue_list,
+                                         struct socket_packet, list);
+        list_del(&socket_packet->list);
+        socket_client->queue_len--;
+
+        spin_unlock_bh(&socket_client->lock);
+
+        error = __copy_to_user(buf, &socket_packet->icmp_packet,
+                               socket_packet->icmp_len);
+
+        packet_len = socket_packet->icmp_len;
+        kfree(socket_packet);
+
+        if (error)
+                return -EFAULT;
+
+        return packet_len;
+}
+
+static ssize_t bat_socket_write(struct file *file, const char __user *buff,
+                                size_t len, loff_t *off)
+{
+        struct socket_client *socket_client = file->private_data;
+        struct bat_priv *bat_priv = socket_client->bat_priv;
+        struct sk_buff *skb;
+        struct icmp_packet_rr *icmp_packet;
+
+        struct orig_node *orig_node;
+        struct batman_if *batman_if;
+        size_t packet_len = sizeof(struct icmp_packet);
+        uint8_t dstaddr[ETH_ALEN];
+
+        if (len < sizeof(struct icmp_packet)) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Error - can't send packet from char device: "
+                        "invalid packet size\n");
+                return -EINVAL;
+        }
+
+        if (!bat_priv->primary_if)
+                return -EFAULT;
+
+        if (len >= sizeof(struct icmp_packet_rr))
+                packet_len = sizeof(struct icmp_packet_rr);
+
+        skb = dev_alloc_skb(packet_len + sizeof(struct ethhdr));
+        if (!skb)
+                return -ENOMEM;
+
+        skb_reserve(skb, sizeof(struct ethhdr));
+        icmp_packet = (struct icmp_packet_rr *)skb_put(skb, packet_len);
+
+        if (!access_ok(VERIFY_READ, buff, packet_len)) {
+                len = -EFAULT;
+                goto free_skb;
+        }
+
+        if (__copy_from_user(icmp_packet, buff, packet_len)) {
+                len = -EFAULT;
+                goto free_skb;
+        }
+
+        if (icmp_packet->packet_type != BAT_ICMP) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Error - can't send packet from char device: "
+                        "got bogus packet type (expected: BAT_ICMP)\n");
+                len = -EINVAL;
+                goto free_skb;
+        }
+
+        if (icmp_packet->msg_type != ECHO_REQUEST) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Error - can't send packet from char device: "
+                        "got bogus message type (expected: ECHO_REQUEST)\n");
+                len = -EINVAL;
+                goto free_skb;
+        }
+
+        icmp_packet->uid = socket_client->index;
+
+        if (icmp_packet->version != COMPAT_VERSION) {
+                icmp_packet->msg_type = PARAMETER_PROBLEM;
+                icmp_packet->ttl = COMPAT_VERSION;
+                bat_socket_add_packet(socket_client, icmp_packet, packet_len);
+                goto free_skb;
+        }
+
+        if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE)
+                goto dst_unreach;
+
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+        orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
+                                                   compare_orig, choose_orig,
+                                                   icmp_packet->dst));
+
+        if (!orig_node)
+                goto unlock;
+
+        if (!orig_node->router)
+                goto unlock;
+
+        batman_if = orig_node->router->if_incoming;
+        memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
+
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+        if (!batman_if)
+                goto dst_unreach;
+
+        if (batman_if->if_status != IF_ACTIVE)
+                goto dst_unreach;
+
+        memcpy(icmp_packet->orig,
+               bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
+
+        if (packet_len == sizeof(struct icmp_packet_rr))
+                memcpy(icmp_packet->rr, batman_if->net_dev->dev_addr, ETH_ALEN);
+
+
+        send_skb_packet(skb, batman_if, dstaddr);
+
+        goto out;
+
+unlock:
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+dst_unreach:
+        icmp_packet->msg_type = DESTINATION_UNREACHABLE;
+        bat_socket_add_packet(socket_client, icmp_packet, packet_len);
+free_skb:
+        kfree_skb(skb);
+out:
+        return len;
+}
+
+static unsigned int bat_socket_poll(struct file *file, poll_table *wait)
+{
+        struct socket_client *socket_client = file->private_data;
+
+        poll_wait(file, &socket_client->queue_wait, wait);
+
+        if (socket_client->queue_len > 0)
+                return POLLIN | POLLRDNORM;
+
+        return 0;
+}
+
+static const struct file_operations fops = {
+        .owner = THIS_MODULE,
+        .open = bat_socket_open,
+        .release = bat_socket_release,
+        .read = bat_socket_read,
+        .write = bat_socket_write,
+        .poll = bat_socket_poll,
+        .llseek = no_llseek,
+};
+
+int bat_socket_setup(struct bat_priv *bat_priv)
+{
+        struct dentry *d;
+
+        if (!bat_priv->debug_dir)
+                goto err;
+
+        d = debugfs_create_file(ICMP_SOCKET, S_IFREG | S_IWUSR | S_IRUSR,
+                                bat_priv->debug_dir, bat_priv, &fops);
+        if (d)
+                goto err;
+
+        return 0;
+
+err:
+        return 1;
+}
+
+static void bat_socket_add_packet(struct socket_client *socket_client,
+                                  struct icmp_packet_rr *icmp_packet,
+                                  size_t icmp_len)
+{
+        struct socket_packet *socket_packet;
+
+        socket_packet = kmalloc(sizeof(struct socket_packet), GFP_ATOMIC);
+
+        if (!socket_packet)
+                return;
+
+        INIT_LIST_HEAD(&socket_packet->list);
+        memcpy(&socket_packet->icmp_packet, icmp_packet, icmp_len);
+        socket_packet->icmp_len = icmp_len;
+
+        spin_lock_bh(&socket_client->lock);
+
+        /* while waiting for the lock the socket_client could have been
+         * deleted */
+        if (!socket_client_hash[icmp_packet->uid]) {
+                spin_unlock_bh(&socket_client->lock);
+                kfree(socket_packet);
+                return;
+        }
+
+        list_add_tail(&socket_packet->list, &socket_client->queue_list);
+        socket_client->queue_len++;
+
+        if (socket_client->queue_len > 100) {
+                socket_packet = list_first_entry(&socket_client->queue_list,
+                                                 struct socket_packet, list);
+
+                list_del(&socket_packet->list);
+                kfree(socket_packet);
+                socket_client->queue_len--;
+        }
+
+        spin_unlock_bh(&socket_client->lock);
+
+        wake_up(&socket_client->queue_wait);
+}
+
+void bat_socket_receive_packet(struct icmp_packet_rr *icmp_packet,
+                               size_t icmp_len)
+{
+        struct socket_client *hash = socket_client_hash[icmp_packet->uid];
+
+        if (hash)
+                bat_socket_add_packet(hash, icmp_packet, icmp_len);
+}
diff --git a/net/batman-adv/icmp_socket.h b/net/batman-adv/icmp_socket.h
new file mode 100644
index 000000000000..bf9b348cde27
--- /dev/null
+++ b/net/batman-adv/icmp_socket.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_ICMP_SOCKET_H_
+#define _NET_BATMAN_ADV_ICMP_SOCKET_H_
+
+#include "types.h"
+
+#define ICMP_SOCKET "socket"
+
+void bat_socket_init(void);
+int bat_socket_setup(struct bat_priv *bat_priv);
+void bat_socket_receive_packet(struct icmp_packet_rr *icmp_packet,
+                               size_t icmp_len);
+
+#endif /* _NET_BATMAN_ADV_ICMP_SOCKET_H_ */
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
new file mode 100644
index 000000000000..b827f6a158cb
--- /dev/null
+++ b/net/batman-adv/main.c
@@ -0,0 +1,187 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "bat_sysfs.h"
+#include "bat_debugfs.h"
+#include "routing.h"
+#include "send.h"
+#include "originator.h"
+#include "soft-interface.h"
+#include "icmp_socket.h"
+#include "translation-table.h"
+#include "hard-interface.h"
+#include "gateway_client.h"
+#include "types.h"
+#include "vis.h"
+#include "hash.h"
+
+struct list_head if_list;
+
+unsigned char broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+
+struct workqueue_struct *bat_event_workqueue;
+
+static int __init batman_init(void)
+{
+        INIT_LIST_HEAD(&if_list);
+
+        /* the name should not be longer than 10 chars - see
+         * http://lwn.net/Articles/23634/ */
+        bat_event_workqueue = create_singlethread_workqueue("bat_events");
+
+        if (!bat_event_workqueue)
+                return -ENOMEM;
+
+        bat_socket_init();
+        debugfs_init();
+
+        register_netdevice_notifier(&hard_if_notifier);
+
+        pr_info("B.A.T.M.A.N. advanced %s%s (compatibility version %i) "
+                "loaded\n", SOURCE_VERSION, REVISION_VERSION_STR,
+                COMPAT_VERSION);
+
+        return 0;
+}
+
+static void __exit batman_exit(void)
+{
+        debugfs_destroy();
+        unregister_netdevice_notifier(&hard_if_notifier);
+        hardif_remove_interfaces();
+
+        flush_workqueue(bat_event_workqueue);
+        destroy_workqueue(bat_event_workqueue);
+        bat_event_workqueue = NULL;
+
+        rcu_barrier();
+}
+
+int mesh_init(struct net_device *soft_iface)
+{
+        struct bat_priv *bat_priv = netdev_priv(soft_iface);
+
+        spin_lock_init(&bat_priv->orig_hash_lock);
+        spin_lock_init(&bat_priv->forw_bat_list_lock);
+        spin_lock_init(&bat_priv->forw_bcast_list_lock);
+        spin_lock_init(&bat_priv->hna_lhash_lock);
+        spin_lock_init(&bat_priv->hna_ghash_lock);
+        spin_lock_init(&bat_priv->gw_list_lock);
+        spin_lock_init(&bat_priv->vis_hash_lock);
+        spin_lock_init(&bat_priv->vis_list_lock);
+        spin_lock_init(&bat_priv->softif_neigh_lock);
+
+        INIT_HLIST_HEAD(&bat_priv->forw_bat_list);
+        INIT_HLIST_HEAD(&bat_priv->forw_bcast_list);
+        INIT_HLIST_HEAD(&bat_priv->gw_list);
+        INIT_HLIST_HEAD(&bat_priv->softif_neigh_list);
+
+        if (originator_init(bat_priv) < 1)
+                goto err;
+
+        if (hna_local_init(bat_priv) < 1)
+                goto err;
+
+        if (hna_global_init(bat_priv) < 1)
+                goto err;
+
+        hna_local_add(soft_iface, soft_iface->dev_addr);
+
+        if (vis_init(bat_priv) < 1)
+                goto err;
+
+        atomic_set(&bat_priv->mesh_state, MESH_ACTIVE);
+        goto end;
+
+err:
+        pr_err("Unable to allocate memory for mesh information structures: "
+               "out of mem ?\n");
+        mesh_free(soft_iface);
+        return -1;
+
+end:
+        return 0;
+}
+
+void mesh_free(struct net_device *soft_iface)
+{
+        struct bat_priv *bat_priv = netdev_priv(soft_iface);
+
+        atomic_set(&bat_priv->mesh_state, MESH_DEACTIVATING);
+
+        purge_outstanding_packets(bat_priv, NULL);
+
+        vis_quit(bat_priv);
+
+        gw_node_purge(bat_priv);
+        originator_free(bat_priv);
+
+        hna_local_free(bat_priv);
+        hna_global_free(bat_priv);
+
+        softif_neigh_purge(bat_priv);
+
+        atomic_set(&bat_priv->mesh_state, MESH_INACTIVE);
+}
+
+void inc_module_count(void)
+{
+        try_module_get(THIS_MODULE);
+}
+
+void dec_module_count(void)
+{
+        module_put(THIS_MODULE);
+}
+
+int is_my_mac(uint8_t *addr)
+{
+        struct batman_if *batman_if;
+
+        rcu_read_lock();
+        list_for_each_entry_rcu(batman_if, &if_list, list) {
+                if (batman_if->if_status != IF_ACTIVE)
+                        continue;
+
+                if (compare_orig(batman_if->net_dev->dev_addr, addr)) {
+                        rcu_read_unlock();
+                        return 1;
+                }
+        }
+        rcu_read_unlock();
+        return 0;
+
+}
+
+module_init(batman_init);
+module_exit(batman_exit);
+
+MODULE_LICENSE("GPL");
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_SUPPORTED_DEVICE(DRIVER_DEVICE);
+#ifdef REVISION_VERSION
+MODULE_VERSION(SOURCE_VERSION "-" REVISION_VERSION);
+#else
+MODULE_VERSION(SOURCE_VERSION);
+#endif
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
new file mode 100644
index 000000000000..d4d9926c2201
--- /dev/null
+++ b/net/batman-adv/main.h
@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_MAIN_H_
+#define _NET_BATMAN_ADV_MAIN_H_
+
+/* Kernel Programming */
+#define LINUX
+
+#define DRIVER_AUTHOR "Marek Lindner <lindner_marek@yahoo.de>, " \
+                      "Simon Wunderlich <siwu@hrz.tu-chemnitz.de>"
+#define DRIVER_DESC   "B.A.T.M.A.N. advanced"
+#define DRIVER_DEVICE "batman-adv"
+
+#define SOURCE_VERSION "next"
+
+
+/* B.A.T.M.A.N. parameters */
+
+#define TQ_MAX_VALUE 255
+#define JITTER 20
+#define TTL 50                    /* Time To Live of broadcast messages */
+
+#define PURGE_TIMEOUT 200       /* purge originators after time in seconds if no
+                                   * valid packet comes in -> TODO: check
+                                   * influence on TQ_LOCAL_WINDOW_SIZE */
+#define LOCAL_HNA_TIMEOUT 3600 /* in seconds */
+
+#define TQ_LOCAL_WINDOW_SIZE 64   /* sliding packet range of received originator
+                                   * messages in squence numbers (should be a
+                                   * multiple of our word size) */
+#define TQ_GLOBAL_WINDOW_SIZE 5
+#define TQ_LOCAL_BIDRECT_SEND_MINIMUM 1
+#define TQ_LOCAL_BIDRECT_RECV_MINIMUM 1
+#define TQ_TOTAL_BIDRECT_LIMIT 1
+
+#define NUM_WORDS (TQ_LOCAL_WINDOW_SIZE / WORD_BIT_SIZE)
+
+#define PACKBUFF_SIZE 2000
+#define LOG_BUF_LEN 8192          /* has to be a power of 2 */
+
+#define VIS_INTERVAL 5000       /* 5 seconds */
+
+/* how much worse secondary interfaces may be to
+ * to be considered as bonding candidates */
+
+#define BONDING_TQ_THRESHOLD    50
+
+#define MAX_AGGREGATION_BYTES 512 /* should not be bigger than 512 bytes or
+                                   * change the size of
+                                   * forw_packet->direct_link_flags */
+#define MAX_AGGREGATION_MS 100
+
+#define SOFTIF_NEIGH_TIMEOUT 180000 /* 3 minutes */
+
+#define RESET_PROTECTION_MS 30000
+#define EXPECTED_SEQNO_RANGE    65536
+/* don't reset again within 30 seconds */
+
+#define MESH_INACTIVE 0
+#define MESH_ACTIVE 1
+#define MESH_DEACTIVATING 2
+
+#define BCAST_QUEUE_LEN         256
+#define BATMAN_QUEUE_LEN        256
+
+/*
+ * Debug Messages
+ */
+#ifdef pr_fmt
+#undef pr_fmt
+#endif
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt /* Append 'batman-adv: ' before
+                                             * kernel messages */
+
+#define DBG_BATMAN 1    /* all messages related to routing / flooding /
+                         * broadcasting / etc */
+#define DBG_ROUTES 2    /* route or hna added / changed / deleted */
+#define DBG_ALL 3
+
+#define LOG_BUF_LEN 8192          /* has to be a power of 2 */
+
+
+/*
+ *  Vis
+ */
+
+/* #define VIS_SUBCLUSTERS_DISABLED */
+
+/*
+ * Kernel headers
+ */
+
+#include <linux/mutex.h>        /* mutex */
+#include <linux/module.h>       /* needed by all modules */
+#include <linux/netdevice.h>    /* netdevice */
+#include <linux/etherdevice.h>  /* ethernet address classifaction */
+#include <linux/if_ether.h>     /* ethernet header */
+#include <linux/poll.h>         /* poll_table */
+#include <linux/kthread.h>      /* kernel threads */
+#include <linux/pkt_sched.h>    /* schedule types */
+#include <linux/workqueue.h>    /* workqueue */
+#include <linux/slab.h>
+#include <net/sock.h>           /* struct sock */
+#include <linux/jiffies.h>
+#include <linux/seq_file.h>
+#include "types.h"
+
+#ifndef REVISION_VERSION
+#define REVISION_VERSION_STR ""
+#else
+#define REVISION_VERSION_STR " "REVISION_VERSION
+#endif
+
+extern struct list_head if_list;
+
+extern unsigned char broadcast_addr[];
+extern struct workqueue_struct *bat_event_workqueue;
+
+int mesh_init(struct net_device *soft_iface);
+void mesh_free(struct net_device *soft_iface);
+void inc_module_count(void);
+void dec_module_count(void);
+int is_my_mac(uint8_t *addr);
+
+#ifdef CONFIG_BATMAN_ADV_DEBUG
+int debug_log(struct bat_priv *bat_priv, char *fmt, ...);
+
+#define bat_dbg(type, bat_priv, fmt, arg...)                    \
+        do {                                                    \
+                if (atomic_read(&bat_priv->log_level) & type)   \
+                        debug_log(bat_priv, fmt, ## arg);       \
+        }                                                       \
+        while (0)
+#else /* !CONFIG_BATMAN_ADV_DEBUG */
+static inline void bat_dbg(char type __attribute__((unused)),
+                           struct bat_priv *bat_priv __attribute__((unused)),
+                           char *fmt __attribute__((unused)), ...)
+{
+}
+#endif
+
+#define bat_warning(net_dev, fmt, arg...)                               \
+        do {                                                            \
+                struct net_device *_netdev = (net_dev);                 \
+                struct bat_priv *_batpriv = netdev_priv(_netdev);       \
+                bat_dbg(DBG_ALL, _batpriv, fmt, ## arg);                \
+                pr_warning("%s: " fmt, _netdev->name, ## arg);          \
+        } while (0)
+#define bat_info(net_dev, fmt, arg...)                                  \
+        do {                                                            \
+                struct net_device *_netdev = (net_dev);                 \
+                struct bat_priv *_batpriv = netdev_priv(_netdev);       \
+                bat_dbg(DBG_ALL, _batpriv, fmt, ## arg);                \
+                pr_info("%s: " fmt, _netdev->name, ## arg);             \
+        } while (0)
+#define bat_err(net_dev, fmt, arg...)                                   \
+        do {                                                            \
+                struct net_device *_netdev = (net_dev);                 \
+                struct bat_priv *_batpriv = netdev_priv(_netdev);       \
+                bat_dbg(DBG_ALL, _batpriv, fmt, ## arg);                \
+                pr_err("%s: " fmt, _netdev->name, ## arg);              \
+        } while (0)
+
+#endif /* _NET_BATMAN_ADV_MAIN_H_ */
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
new file mode 100644
index 000000000000..6b7fb6b7e6f9
--- /dev/null
+++ b/net/batman-adv/originator.c
@@ -0,0 +1,564 @@
+/*
+ * Copyright (C) 2009-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+/* increase the reference counter for this originator */
+
+#include "main.h"
+#include "originator.h"
+#include "hash.h"
+#include "translation-table.h"
+#include "routing.h"
+#include "gateway_client.h"
+#include "hard-interface.h"
+#include "unicast.h"
+#include "soft-interface.h"
+
+static void purge_orig(struct work_struct *work);
+
+static void start_purge_timer(struct bat_priv *bat_priv)
+{
+        INIT_DELAYED_WORK(&bat_priv->orig_work, purge_orig);
+        queue_delayed_work(bat_event_workqueue, &bat_priv->orig_work, 1 * HZ);
+}
+
+int originator_init(struct bat_priv *bat_priv)
+{
+        if (bat_priv->orig_hash)
+                return 1;
+
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+        bat_priv->orig_hash = hash_new(1024);
+
+        if (!bat_priv->orig_hash)
+                goto err;
+
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+        start_purge_timer(bat_priv);
+        return 1;
+
+err:
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+        return 0;
+}
+
+struct neigh_node *
+create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node,
+                uint8_t *neigh, struct batman_if *if_incoming)
+{
+        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+        struct neigh_node *neigh_node;
+
+        bat_dbg(DBG_BATMAN, bat_priv,
+                "Creating new last-hop neighbor of originator\n");
+
+        neigh_node = kzalloc(sizeof(struct neigh_node), GFP_ATOMIC);
+        if (!neigh_node)
+                return NULL;
+
+        INIT_LIST_HEAD(&neigh_node->list);
+
+        memcpy(neigh_node->addr, neigh, ETH_ALEN);
+        neigh_node->orig_node = orig_neigh_node;
+        neigh_node->if_incoming = if_incoming;
+
+        list_add_tail(&neigh_node->list, &orig_node->neigh_list);
+        return neigh_node;
+}
+
+static void free_orig_node(void *data, void *arg)
+{
+        struct list_head *list_pos, *list_pos_tmp;
+        struct neigh_node *neigh_node;
+        struct orig_node *orig_node = (struct orig_node *)data;
+        struct bat_priv *bat_priv = (struct bat_priv *)arg;
+
+        /* for all neighbors towards this originator ... */
+        list_for_each_safe(list_pos, list_pos_tmp, &orig_node->neigh_list) {
+                neigh_node = list_entry(list_pos, struct neigh_node, list);
+
+                list_del(list_pos);
+                kfree(neigh_node);
+        }
+
+        frag_list_free(&orig_node->frag_list);
+        hna_global_del_orig(bat_priv, orig_node, "originator timed out");
+
+        kfree(orig_node->bcast_own);
+        kfree(orig_node->bcast_own_sum);
+        kfree(orig_node);
+}
+
+void originator_free(struct bat_priv *bat_priv)
+{
+        if (!bat_priv->orig_hash)
+                return;
+
+        cancel_delayed_work_sync(&bat_priv->orig_work);
+
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+        hash_delete(bat_priv->orig_hash, free_orig_node, bat_priv);
+        bat_priv->orig_hash = NULL;
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+}
+
+/* this function finds or creates an originator entry for the given
+ * address if it does not exits */
+struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr)
+{
+        struct orig_node *orig_node;
+        int size;
+        int hash_added;
+
+        orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
+                                                   compare_orig, choose_orig,
+                                                   addr));
+
+        if (orig_node)
+                return orig_node;
+
+        bat_dbg(DBG_BATMAN, bat_priv,
+                "Creating new originator: %pM\n", addr);
+
+        orig_node = kzalloc(sizeof(struct orig_node), GFP_ATOMIC);
+        if (!orig_node)
+                return NULL;
+
+        INIT_LIST_HEAD(&orig_node->neigh_list);
+
+        memcpy(orig_node->orig, addr, ETH_ALEN);
+        orig_node->router = NULL;
+        orig_node->hna_buff = NULL;
+        orig_node->bcast_seqno_reset = jiffies - 1
+                                        - msecs_to_jiffies(RESET_PROTECTION_MS);
+        orig_node->batman_seqno_reset = jiffies - 1
+                                        - msecs_to_jiffies(RESET_PROTECTION_MS);
+
+        size = bat_priv->num_ifaces * sizeof(unsigned long) * NUM_WORDS;
+
+        orig_node->bcast_own = kzalloc(size, GFP_ATOMIC);
+        if (!orig_node->bcast_own)
+                goto free_orig_node;
+
+        size = bat_priv->num_ifaces * sizeof(uint8_t);
+        orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC);
+
+        INIT_LIST_HEAD(&orig_node->frag_list);
+        orig_node->last_frag_packet = 0;
+
+        if (!orig_node->bcast_own_sum)
+                goto free_bcast_own;
+
+        hash_added = hash_add(bat_priv->orig_hash, compare_orig, choose_orig,
+                              orig_node);
+        if (hash_added < 0)
+                goto free_bcast_own_sum;
+
+        return orig_node;
+free_bcast_own_sum:
+        kfree(orig_node->bcast_own_sum);
+free_bcast_own:
+        kfree(orig_node->bcast_own);
+free_orig_node:
+        kfree(orig_node);
+        return NULL;
+}
+
+static bool purge_orig_neighbors(struct bat_priv *bat_priv,
+                                 struct orig_node *orig_node,
+                                 struct neigh_node **best_neigh_node)
+{
+        struct list_head *list_pos, *list_pos_tmp;
+        struct neigh_node *neigh_node;
+        bool neigh_purged = false;
+
+        *best_neigh_node = NULL;
+
+        /* for all neighbors towards this originator ... */
+        list_for_each_safe(list_pos, list_pos_tmp, &orig_node->neigh_list) {
+                neigh_node = list_entry(list_pos, struct neigh_node, list);
+
+                if ((time_after(jiffies,
+                        neigh_node->last_valid + PURGE_TIMEOUT * HZ)) ||
+                    (neigh_node->if_incoming->if_status == IF_INACTIVE) ||
+                    (neigh_node->if_incoming->if_status == IF_TO_BE_REMOVED)) {
+
+                        if (neigh_node->if_incoming->if_status ==
+                                                        IF_TO_BE_REMOVED)
+                                bat_dbg(DBG_BATMAN, bat_priv,
+                                        "neighbor purge: originator %pM, "
+                                        "neighbor: %pM, iface: %s\n",
+                                        orig_node->orig, neigh_node->addr,
+                                        neigh_node->if_incoming->net_dev->name);
+                        else
+                                bat_dbg(DBG_BATMAN, bat_priv,
+                                        "neighbor timeout: originator %pM, "
+                                        "neighbor: %pM, last_valid: %lu\n",
+                                        orig_node->orig, neigh_node->addr,
+                                        (neigh_node->last_valid / HZ));
+
+                        neigh_purged = true;
+                        list_del(list_pos);
+                        kfree(neigh_node);
+                } else {
+                        if ((!*best_neigh_node) ||
+                            (neigh_node->tq_avg > (*best_neigh_node)->tq_avg))
+                                *best_neigh_node = neigh_node;
+                }
+        }
+        return neigh_purged;
+}
+
+static bool purge_orig_node(struct bat_priv *bat_priv,
+                            struct orig_node *orig_node)
+{
+        struct neigh_node *best_neigh_node;
+
+        if (time_after(jiffies,
+                orig_node->last_valid + 2 * PURGE_TIMEOUT * HZ)) {
+
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Originator timeout: originator %pM, last_valid %lu\n",
+                        orig_node->orig, (orig_node->last_valid / HZ));
+                return true;
+        } else {
+                if (purge_orig_neighbors(bat_priv, orig_node,
+                                                        &best_neigh_node)) {
+                        update_routes(bat_priv, orig_node,
+                                      best_neigh_node,
+                                      orig_node->hna_buff,
+                                      orig_node->hna_buff_len);
+                        /* update bonding candidates, we could have lost
+                         * some candidates. */
+                        update_bonding_candidates(bat_priv, orig_node);
+                }
+        }
+
+        return false;
+}
+
+static void _purge_orig(struct bat_priv *bat_priv)
+{
+        struct hashtable_t *hash = bat_priv->orig_hash;
+        struct hlist_node *walk, *safe;
+        struct hlist_head *head;
+        struct element_t *bucket;
+        struct orig_node *orig_node;
+        int i;
+
+        if (!hash)
+                return;
+
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+
+        /* for all origins... */
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry_safe(bucket, walk, safe, head, hlist) {
+                        orig_node = bucket->data;
+
+                        if (purge_orig_node(bat_priv, orig_node)) {
+                                if (orig_node->gw_flags)
+                                        gw_node_delete(bat_priv, orig_node);
+                                hlist_del(walk);
+                                kfree(bucket);
+                                free_orig_node(orig_node, bat_priv);
+                        }
+
+                        if (time_after(jiffies, orig_node->last_frag_packet +
+                                                msecs_to_jiffies(FRAG_TIMEOUT)))
+                                frag_list_free(&orig_node->frag_list);
+                }
+        }
+
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+        gw_node_purge(bat_priv);
+        gw_election(bat_priv);
+
+        softif_neigh_purge(bat_priv);
+}
+
+static void purge_orig(struct work_struct *work)
+{
+        struct delayed_work *delayed_work =
+                container_of(work, struct delayed_work, work);
+        struct bat_priv *bat_priv =
+                container_of(delayed_work, struct bat_priv, orig_work);
+
+        _purge_orig(bat_priv);
+        start_purge_timer(bat_priv);
+}
+
+void purge_orig_ref(struct bat_priv *bat_priv)
+{
+        _purge_orig(bat_priv);
+}
+
+int orig_seq_print_text(struct seq_file *seq, void *offset)
+{
+        struct net_device *net_dev = (struct net_device *)seq->private;
+        struct bat_priv *bat_priv = netdev_priv(net_dev);
+        struct hashtable_t *hash = bat_priv->orig_hash;
+        struct hlist_node *walk;
+        struct hlist_head *head;
+        struct element_t *bucket;
+        struct orig_node *orig_node;
+        struct neigh_node *neigh_node;
+        int batman_count = 0;
+        int last_seen_secs;
+        int last_seen_msecs;
+        int i;
+
+        if ((!bat_priv->primary_if) ||
+            (bat_priv->primary_if->if_status != IF_ACTIVE)) {
+                if (!bat_priv->primary_if)
+                        return seq_printf(seq, "BATMAN mesh %s disabled - "
+                                     "please specify interfaces to enable it\n",
+                                     net_dev->name);
+
+                return seq_printf(seq, "BATMAN mesh %s "
+                                  "disabled - primary interface not active\n",
+                                  net_dev->name);
+        }
+
+        seq_printf(seq, "[B.A.T.M.A.N. adv %s%s, MainIF/MAC: %s/%pM (%s)]\n",
+                   SOURCE_VERSION, REVISION_VERSION_STR,
+                   bat_priv->primary_if->net_dev->name,
+                   bat_priv->primary_if->net_dev->dev_addr, net_dev->name);
+        seq_printf(seq, "  %-15s %s (%s/%i) %17s [%10s]: %20s ...\n",
+                   "Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop",
+                   "outgoingIF", "Potential nexthops");
+
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry(bucket, walk, head, hlist) {
+                        orig_node = bucket->data;
+
+                        if (!orig_node->router)
+                                continue;
+
+                        if (orig_node->router->tq_avg == 0)
+                                continue;
+
+                        last_seen_secs = jiffies_to_msecs(jiffies -
+                                                orig_node->last_valid) / 1000;
+                        last_seen_msecs = jiffies_to_msecs(jiffies -
+                                                orig_node->last_valid) % 1000;
+
+                        neigh_node = orig_node->router;
+                        seq_printf(seq, "%pM %4i.%03is   (%3i) %pM [%10s]:",
+                                   orig_node->orig, last_seen_secs,
+                                   last_seen_msecs, neigh_node->tq_avg,
+                                   neigh_node->addr,
+                                   neigh_node->if_incoming->net_dev->name);
+
+                        list_for_each_entry(neigh_node, &orig_node->neigh_list,
+                                            list) {
+                                seq_printf(seq, " %pM (%3i)", neigh_node->addr,
+                                                neigh_node->tq_avg);
+                        }
+
+                        seq_printf(seq, "\n");
+                        batman_count++;
+                }
+        }
+
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+        if ((batman_count == 0))
+                seq_printf(seq, "No batman nodes in range ...\n");
+
+        return 0;
+}
+
+static int orig_node_add_if(struct orig_node *orig_node, int max_if_num)
+{
+        void *data_ptr;
+
+        data_ptr = kmalloc(max_if_num * sizeof(unsigned long) * NUM_WORDS,
+                           GFP_ATOMIC);
+        if (!data_ptr) {
+                pr_err("Can't resize orig: out of memory\n");
+                return -1;
+        }
+
+        memcpy(data_ptr, orig_node->bcast_own,
+               (max_if_num - 1) * sizeof(unsigned long) * NUM_WORDS);
+        kfree(orig_node->bcast_own);
+        orig_node->bcast_own = data_ptr;
+
+        data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
+        if (!data_ptr) {
+                pr_err("Can't resize orig: out of memory\n");
+                return -1;
+        }
+
+        memcpy(data_ptr, orig_node->bcast_own_sum,
+               (max_if_num - 1) * sizeof(uint8_t));
+        kfree(orig_node->bcast_own_sum);
+        orig_node->bcast_own_sum = data_ptr;
+
+        return 0;
+}
+
+int orig_hash_add_if(struct batman_if *batman_if, int max_if_num)
+{
+        struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
+        struct hashtable_t *hash = bat_priv->orig_hash;
+        struct hlist_node *walk;
+        struct hlist_head *head;
+        struct element_t *bucket;
+        struct orig_node *orig_node;
+        int i;
+
+        /* resize all orig nodes because orig_node->bcast_own(_sum) depend on
+         * if_num */
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry(bucket, walk, head, hlist) {
+                        orig_node = bucket->data;
+
+                        if (orig_node_add_if(orig_node, max_if_num) == -1)
+                                goto err;
+                }
+        }
+
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+        return 0;
+
+err:
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+        return -ENOMEM;
+}
+
+static int orig_node_del_if(struct orig_node *orig_node,
+                     int max_if_num, int del_if_num)
+{
+        void *data_ptr = NULL;
+        int chunk_size;
+
+        /* last interface was removed */
+        if (max_if_num == 0)
+                goto free_bcast_own;
+
+        chunk_size = sizeof(unsigned long) * NUM_WORDS;
+        data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC);
+        if (!data_ptr) {
+                pr_err("Can't resize orig: out of memory\n");
+                return -1;
+        }
+
+        /* copy first part */
+        memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size);
+
+        /* copy second part */
+        memcpy(data_ptr + del_if_num * chunk_size,
+               orig_node->bcast_own + ((del_if_num + 1) * chunk_size),
+               (max_if_num - del_if_num) * chunk_size);
+
+free_bcast_own:
+        kfree(orig_node->bcast_own);
+        orig_node->bcast_own = data_ptr;
+
+        if (max_if_num == 0)
+                goto free_own_sum;
+
+        data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
+        if (!data_ptr) {
+                pr_err("Can't resize orig: out of memory\n");
+                return -1;
+        }
+
+        memcpy(data_ptr, orig_node->bcast_own_sum,
+               del_if_num * sizeof(uint8_t));
+
+        memcpy(data_ptr + del_if_num * sizeof(uint8_t),
+               orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)),
+               (max_if_num - del_if_num) * sizeof(uint8_t));
+
+free_own_sum:
+        kfree(orig_node->bcast_own_sum);
+        orig_node->bcast_own_sum = data_ptr;
+
+        return 0;
+}
+
+int orig_hash_del_if(struct batman_if *batman_if, int max_if_num)
+{
+        struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
+        struct hashtable_t *hash = bat_priv->orig_hash;
+        struct hlist_node *walk;
+        struct hlist_head *head;
+        struct element_t *bucket;
+        struct batman_if *batman_if_tmp;
+        struct orig_node *orig_node;
+        int i, ret;
+
+        /* resize all orig nodes because orig_node->bcast_own(_sum) depend on
+         * if_num */
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry(bucket, walk, head, hlist) {
+                        orig_node = bucket->data;
+
+                        ret = orig_node_del_if(orig_node, max_if_num,
+                                        batman_if->if_num);
+
+                        if (ret == -1)
+                                goto err;
+                }
+        }
+
+        /* renumber remaining batman interfaces _inside_ of orig_hash_lock */
+        rcu_read_lock();
+        list_for_each_entry_rcu(batman_if_tmp, &if_list, list) {
+                if (batman_if_tmp->if_status == IF_NOT_IN_USE)
+                        continue;
+
+                if (batman_if == batman_if_tmp)
+                        continue;
+
+                if (batman_if->soft_iface != batman_if_tmp->soft_iface)
+                        continue;
+
+                if (batman_if_tmp->if_num > batman_if->if_num)
+                        batman_if_tmp->if_num--;
+        }
+        rcu_read_unlock();
+
+        batman_if->if_num = -1;
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+        return 0;
+
+err:
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+        return -ENOMEM;
+}
diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h
new file mode 100644
index 000000000000..d474ceb2a4eb
--- /dev/null
+++ b/net/batman-adv/originator.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_ORIGINATOR_H_
+#define _NET_BATMAN_ADV_ORIGINATOR_H_
+
+int originator_init(struct bat_priv *bat_priv);
+void originator_free(struct bat_priv *bat_priv);
+void purge_orig_ref(struct bat_priv *bat_priv);
+struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr);
+struct neigh_node *
+create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node,
+                uint8_t *neigh, struct batman_if *if_incoming);
+int orig_seq_print_text(struct seq_file *seq, void *offset);
+int orig_hash_add_if(struct batman_if *batman_if, int max_if_num);
+int orig_hash_del_if(struct batman_if *batman_if, int max_if_num);
+
+
+/* returns 1 if they are the same originator */
+static inline int compare_orig(void *data1, void *data2)
+{
+        return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
+}
+
+/* hashfunction to choose an entry in a hash table of given size */
+/* hash algorithm from http://en.wikipedia.org/wiki/Hash_table */
+static inline int choose_orig(void *data, int32_t size)
+{
+        unsigned char *key = data;
+        uint32_t hash = 0;
+        size_t i;
+
+        for (i = 0; i < 6; i++) {
+                hash += key[i];
+                hash += (hash << 10);
+                hash ^= (hash >> 6);
+        }
+
+        hash += (hash << 3);
+        hash ^= (hash >> 11);
+        hash += (hash << 15);
+
+        return hash % size;
+}
+
+#endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
new file mode 100644
index 000000000000..b49fdf70a6d5
--- /dev/null
+++ b/net/batman-adv/packet.h
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_PACKET_H_
+#define _NET_BATMAN_ADV_PACKET_H_
+
+#define ETH_P_BATMAN  0x4305    /* unofficial/not registered Ethertype */
+
+#define BAT_PACKET       0x01
+#define BAT_ICMP         0x02
+#define BAT_UNICAST      0x03
+#define BAT_BCAST        0x04
+#define BAT_VIS          0x05
+#define BAT_UNICAST_FRAG 0x06
+
+/* this file is included by batctl which needs these defines */
+#define COMPAT_VERSION 12
+#define DIRECTLINK 0x40
+#define VIS_SERVER 0x20
+#define PRIMARIES_FIRST_HOP 0x10
+
+/* ICMP message types */
+#define ECHO_REPLY 0
+#define DESTINATION_UNREACHABLE 3
+#define ECHO_REQUEST 8
+#define TTL_EXCEEDED 11
+#define PARAMETER_PROBLEM 12
+
+/* vis defines */
+#define VIS_TYPE_SERVER_SYNC            0
+#define VIS_TYPE_CLIENT_UPDATE          1
+
+/* fragmentation defines */
+#define UNI_FRAG_HEAD 0x01
+
+struct batman_packet {
+        uint8_t  packet_type;
+        uint8_t  version;  /* batman version field */
+        uint8_t  flags;    /* 0x40: DIRECTLINK flag, 0x20 VIS_SERVER flag... */
+        uint8_t  tq;
+        uint32_t seqno;
+        uint8_t  orig[6];
+        uint8_t  prev_sender[6];
+        uint8_t  ttl;
+        uint8_t  num_hna;
+        uint8_t  gw_flags;  /* flags related to gateway class */
+        uint8_t  align;
+} __attribute__((packed));
+
+#define BAT_PACKET_LEN sizeof(struct batman_packet)
+
+struct icmp_packet {
+        uint8_t  packet_type;
+        uint8_t  version;  /* batman version field */
+        uint8_t  msg_type; /* see ICMP message types above */
+        uint8_t  ttl;
+        uint8_t  dst[6];
+        uint8_t  orig[6];
+        uint16_t seqno;
+        uint8_t  uid;
+} __attribute__((packed));
+
+#define BAT_RR_LEN 16
+
+/* icmp_packet_rr must start with all fields from imcp_packet
+ * as this is assumed by code that handles ICMP packets */
+struct icmp_packet_rr {
+        uint8_t  packet_type;
+        uint8_t  version;  /* batman version field */
+        uint8_t  msg_type; /* see ICMP message types above */
+        uint8_t  ttl;
+        uint8_t  dst[6];
+        uint8_t  orig[6];
+        uint16_t seqno;
+        uint8_t  uid;
+        uint8_t  rr_cur;
+        uint8_t  rr[BAT_RR_LEN][ETH_ALEN];
+} __attribute__((packed));
+
+struct unicast_packet {
+        uint8_t  packet_type;
+        uint8_t  version;  /* batman version field */
+        uint8_t  dest[6];
+        uint8_t  ttl;
+} __attribute__((packed));
+
+struct unicast_frag_packet {
+        uint8_t  packet_type;
+        uint8_t  version;  /* batman version field */
+        uint8_t  dest[6];
+        uint8_t  ttl;
+        uint8_t  flags;
+        uint8_t  orig[6];
+        uint16_t seqno;
+} __attribute__((packed));
+
+struct bcast_packet {
+        uint8_t  packet_type;
+        uint8_t  version;  /* batman version field */
+        uint8_t  orig[6];
+        uint8_t  ttl;
+        uint32_t seqno;
+} __attribute__((packed));
+
+struct vis_packet {
+        uint8_t  packet_type;
+        uint8_t  version;        /* batman version field */
+        uint8_t  vis_type;       /* which type of vis-participant sent this? */
+        uint8_t  entries;        /* number of entries behind this struct */
+        uint32_t seqno;          /* sequence number */
+        uint8_t  ttl;            /* TTL */
+        uint8_t  vis_orig[6];    /* originator that informs about its
+                                  * neighbors */
+        uint8_t  target_orig[6]; /* who should receive this packet */
+        uint8_t  sender_orig[6]; /* who sent or rebroadcasted this packet */
+} __attribute__((packed));
+
+#endif /* _NET_BATMAN_ADV_PACKET_H_ */
diff --git a/net/batman-adv/ring_buffer.c b/net/batman-adv/ring_buffer.c
new file mode 100644
index 000000000000..defd37c9be1f
--- /dev/null
+++ b/net/batman-adv/ring_buffer.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "ring_buffer.h"
+
+void ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index, uint8_t value)
+{
+        lq_recv[*lq_index] = value;
+        *lq_index = (*lq_index + 1) % TQ_GLOBAL_WINDOW_SIZE;
+}
+
+uint8_t ring_buffer_avg(uint8_t lq_recv[])
+{
+        uint8_t *ptr;
+        uint16_t count = 0, i = 0, sum = 0;
+
+        ptr = lq_recv;
+
+        while (i < TQ_GLOBAL_WINDOW_SIZE) {
+                if (*ptr != 0) {
+                        count++;
+                        sum += *ptr;
+                }
+
+                i++;
+                ptr++;
+        }
+
+        if (count == 0)
+                return 0;
+
+        return (uint8_t)(sum / count);
+}
diff --git a/net/batman-adv/ring_buffer.h b/net/batman-adv/ring_buffer.h
new file mode 100644
index 000000000000..6b0cb9aaeba5
--- /dev/null
+++ b/net/batman-adv/ring_buffer.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_RING_BUFFER_H_
+#define _NET_BATMAN_ADV_RING_BUFFER_H_
+
+void ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index, uint8_t value);
+uint8_t ring_buffer_avg(uint8_t lq_recv[]);
+
+#endif /* _NET_BATMAN_ADV_RING_BUFFER_H_ */
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
new file mode 100644
index 000000000000..8828eddd3f72
--- /dev/null
+++ b/net/batman-adv/routing.c
@@ -0,0 +1,1397 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "routing.h"
+#include "send.h"
+#include "hash.h"
+#include "soft-interface.h"
+#include "hard-interface.h"
+#include "icmp_socket.h"
+#include "translation-table.h"
+#include "originator.h"
+#include "types.h"
+#include "ring_buffer.h"
+#include "vis.h"
+#include "aggregation.h"
+#include "gateway_common.h"
+#include "gateway_client.h"
+#include "unicast.h"
+
+void slide_own_bcast_window(struct batman_if *batman_if)
+{
+        struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
+        struct hashtable_t *hash = bat_priv->orig_hash;
+        struct hlist_node *walk;
+        struct hlist_head *head;
+        struct element_t *bucket;
+        struct orig_node *orig_node;
+        unsigned long *word;
+        int i;
+        size_t word_index;
+
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry(bucket, walk, head, hlist) {
+                        orig_node = bucket->data;
+                        word_index = batman_if->if_num * NUM_WORDS;
+                        word = &(orig_node->bcast_own[word_index]);
+
+                        bit_get_packet(bat_priv, word, 1, 0);
+                        orig_node->bcast_own_sum[batman_if->if_num] =
+                                bit_packet_count(word);
+                }
+        }
+
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+}
+
+static void update_HNA(struct bat_priv *bat_priv, struct orig_node *orig_node,
+                       unsigned char *hna_buff, int hna_buff_len)
+{
+        if ((hna_buff_len != orig_node->hna_buff_len) ||
+            ((hna_buff_len > 0) &&
+             (orig_node->hna_buff_len > 0) &&
+             (memcmp(orig_node->hna_buff, hna_buff, hna_buff_len) != 0))) {
+
+                if (orig_node->hna_buff_len > 0)
+                        hna_global_del_orig(bat_priv, orig_node,
+                                            "originator changed hna");
+
+                if ((hna_buff_len > 0) && (hna_buff))
+                        hna_global_add_orig(bat_priv, orig_node,
+                                            hna_buff, hna_buff_len);
+        }
+}
+
+static void update_route(struct bat_priv *bat_priv,
+                         struct orig_node *orig_node,
+                         struct neigh_node *neigh_node,
+                         unsigned char *hna_buff, int hna_buff_len)
+{
+        /* route deleted */
+        if ((orig_node->router) && (!neigh_node)) {
+
+                bat_dbg(DBG_ROUTES, bat_priv, "Deleting route towards: %pM\n",
+                        orig_node->orig);
+                hna_global_del_orig(bat_priv, orig_node,
+                                    "originator timed out");
+
+                /* route added */
+        } else if ((!orig_node->router) && (neigh_node)) {
+
+                bat_dbg(DBG_ROUTES, bat_priv,
+                        "Adding route towards: %pM (via %pM)\n",
+                        orig_node->orig, neigh_node->addr);
+                hna_global_add_orig(bat_priv, orig_node,
+                                    hna_buff, hna_buff_len);
+
+                /* route changed */
+        } else {
+                bat_dbg(DBG_ROUTES, bat_priv,
+                        "Changing route towards: %pM "
+                        "(now via %pM - was via %pM)\n",
+                        orig_node->orig, neigh_node->addr,
+                        orig_node->router->addr);
+        }
+
+        orig_node->router = neigh_node;
+}
+
+
+void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node,
+                   struct neigh_node *neigh_node, unsigned char *hna_buff,
+                   int hna_buff_len)
+{
+
+        if (!orig_node)
+                return;
+
+        if (orig_node->router != neigh_node)
+                update_route(bat_priv, orig_node, neigh_node,
+                             hna_buff, hna_buff_len);
+        /* may be just HNA changed */
+        else
+                update_HNA(bat_priv, orig_node, hna_buff, hna_buff_len);
+}
+
+static int is_bidirectional_neigh(struct orig_node *orig_node,
+                                struct orig_node *orig_neigh_node,
+                                struct batman_packet *batman_packet,
+                                struct batman_if *if_incoming)
+{
+        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+        struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL;
+        unsigned char total_count;
+
+        if (orig_node == orig_neigh_node) {
+                list_for_each_entry(tmp_neigh_node,
+                                    &orig_node->neigh_list,
+                                    list) {
+
+                        if (compare_orig(tmp_neigh_node->addr,
+                                         orig_neigh_node->orig) &&
+                            (tmp_neigh_node->if_incoming == if_incoming))
+                                neigh_node = tmp_neigh_node;
+                }
+
+                if (!neigh_node)
+                        neigh_node = create_neighbor(orig_node,
+                                                     orig_neigh_node,
+                                                     orig_neigh_node->orig,
+                                                     if_incoming);
+                /* create_neighbor failed, return 0 */
+                if (!neigh_node)
+                        return 0;
+
+                neigh_node->last_valid = jiffies;
+        } else {
+                /* find packet count of corresponding one hop neighbor */
+                list_for_each_entry(tmp_neigh_node,
+                                    &orig_neigh_node->neigh_list, list) {
+
+                        if (compare_orig(tmp_neigh_node->addr,
+                                         orig_neigh_node->orig) &&
+                            (tmp_neigh_node->if_incoming == if_incoming))
+                                neigh_node = tmp_neigh_node;
+                }
+
+                if (!neigh_node)
+                        neigh_node = create_neighbor(orig_neigh_node,
+                                                     orig_neigh_node,
+                                                     orig_neigh_node->orig,
+                                                     if_incoming);
+                /* create_neighbor failed, return 0 */
+                if (!neigh_node)
+                        return 0;
+        }
+
+        orig_node->last_valid = jiffies;
+
+        /* pay attention to not get a value bigger than 100 % */
+        total_count = (orig_neigh_node->bcast_own_sum[if_incoming->if_num] >
+                       neigh_node->real_packet_count ?
+                       neigh_node->real_packet_count :
+                       orig_neigh_node->bcast_own_sum[if_incoming->if_num]);
+
+        /* if we have too few packets (too less data) we set tq_own to zero */
+        /* if we receive too few packets it is not considered bidirectional */
+        if ((total_count < TQ_LOCAL_BIDRECT_SEND_MINIMUM) ||
+            (neigh_node->real_packet_count < TQ_LOCAL_BIDRECT_RECV_MINIMUM))
+                orig_neigh_node->tq_own = 0;
+        else
+                /* neigh_node->real_packet_count is never zero as we
+                 * only purge old information when getting new
+                 * information */
+                orig_neigh_node->tq_own = (TQ_MAX_VALUE * total_count) /
+                        neigh_node->real_packet_count;
+
+        /*
+         * 1 - ((1-x) ** 3), normalized to TQ_MAX_VALUE this does
+         * affect the nearly-symmetric links only a little, but
+         * punishes asymmetric links more.  This will give a value
+         * between 0 and TQ_MAX_VALUE
+         */
+        orig_neigh_node->tq_asym_penalty =
+                TQ_MAX_VALUE -
+                (TQ_MAX_VALUE *
+                 (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count) *
+                 (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count) *
+                 (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count)) /
+                (TQ_LOCAL_WINDOW_SIZE *
+                 TQ_LOCAL_WINDOW_SIZE *
+                 TQ_LOCAL_WINDOW_SIZE);
+
+        batman_packet->tq = ((batman_packet->tq *
+                              orig_neigh_node->tq_own *
+                              orig_neigh_node->tq_asym_penalty) /
+                             (TQ_MAX_VALUE * TQ_MAX_VALUE));
+
+        bat_dbg(DBG_BATMAN, bat_priv,
+                "bidirectional: "
+                "orig = %-15pM neigh = %-15pM => own_bcast = %2i, "
+                "real recv = %2i, local tq: %3i, asym_penalty: %3i, "
+                "total tq: %3i\n",
+                orig_node->orig, orig_neigh_node->orig, total_count,
+                neigh_node->real_packet_count, orig_neigh_node->tq_own,
+                orig_neigh_node->tq_asym_penalty, batman_packet->tq);
+
+        /* if link has the minimum required transmission quality
+         * consider it bidirectional */
+        if (batman_packet->tq >= TQ_TOTAL_BIDRECT_LIMIT)
+                return 1;
+
+        return 0;
+}
+
+static void update_orig(struct bat_priv *bat_priv,
+                        struct orig_node *orig_node,
+                        struct ethhdr *ethhdr,
+                        struct batman_packet *batman_packet,
+                        struct batman_if *if_incoming,
+                        unsigned char *hna_buff, int hna_buff_len,
+                        char is_duplicate)
+{
+        struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL;
+        int tmp_hna_buff_len;
+
+        bat_dbg(DBG_BATMAN, bat_priv, "update_originator(): "
+                "Searching and updating originator entry of received packet\n");
+
+        list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) {
+                if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) &&
+                    (tmp_neigh_node->if_incoming == if_incoming)) {
+                        neigh_node = tmp_neigh_node;
+                        continue;
+                }
+
+                if (is_duplicate)
+                        continue;
+
+                ring_buffer_set(tmp_neigh_node->tq_recv,
+                                &tmp_neigh_node->tq_index, 0);
+                tmp_neigh_node->tq_avg =
+                        ring_buffer_avg(tmp_neigh_node->tq_recv);
+        }
+
+        if (!neigh_node) {
+                struct orig_node *orig_tmp;
+
+                orig_tmp = get_orig_node(bat_priv, ethhdr->h_source);
+                if (!orig_tmp)
+                        return;
+
+                neigh_node = create_neighbor(orig_node, orig_tmp,
+                                             ethhdr->h_source, if_incoming);
+                if (!neigh_node)
+                        return;
+        } else
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Updating existing last-hop neighbor of originator\n");
+
+        orig_node->flags = batman_packet->flags;
+        neigh_node->last_valid = jiffies;
+
+        ring_buffer_set(neigh_node->tq_recv,
+                        &neigh_node->tq_index,
+                        batman_packet->tq);
+        neigh_node->tq_avg = ring_buffer_avg(neigh_node->tq_recv);
+
+        if (!is_duplicate) {
+                orig_node->last_ttl = batman_packet->ttl;
+                neigh_node->last_ttl = batman_packet->ttl;
+        }
+
+        tmp_hna_buff_len = (hna_buff_len > batman_packet->num_hna * ETH_ALEN ?
+                            batman_packet->num_hna * ETH_ALEN : hna_buff_len);
+
+        /* if this neighbor already is our next hop there is nothing
+         * to change */
+        if (orig_node->router == neigh_node)
+                goto update_hna;
+
+        /* if this neighbor does not offer a better TQ we won't consider it */
+        if ((orig_node->router) &&
+            (orig_node->router->tq_avg > neigh_node->tq_avg))
+                goto update_hna;
+
+        /* if the TQ is the same and the link not more symetric we
+         * won't consider it either */
+        if ((orig_node->router) &&
+             ((neigh_node->tq_avg == orig_node->router->tq_avg) &&
+             (orig_node->router->orig_node->bcast_own_sum[if_incoming->if_num]
+              >= neigh_node->orig_node->bcast_own_sum[if_incoming->if_num])))
+                goto update_hna;
+
+        update_routes(bat_priv, orig_node, neigh_node,
+                      hna_buff, tmp_hna_buff_len);
+        goto update_gw;
+
+update_hna:
+        update_routes(bat_priv, orig_node, orig_node->router,
+                      hna_buff, tmp_hna_buff_len);
+
+update_gw:
+        if (orig_node->gw_flags != batman_packet->gw_flags)
+                gw_node_update(bat_priv, orig_node, batman_packet->gw_flags);
+
+        orig_node->gw_flags = batman_packet->gw_flags;
+
+        /* restart gateway selection if fast or late switching was enabled */
+        if ((orig_node->gw_flags) &&
+            (atomic_read(&bat_priv->gw_mode) == GW_MODE_CLIENT) &&
+            (atomic_read(&bat_priv->gw_sel_class) > 2))
+                gw_check_election(bat_priv, orig_node);
+}
+
+/* checks whether the host restarted and is in the protection time.
+ * returns:
+ *  0 if the packet is to be accepted
+ *  1 if the packet is to be ignored.
+ */
+static int window_protected(struct bat_priv *bat_priv,
+                            int32_t seq_num_diff,
+                            unsigned long *last_reset)
+{
+        if ((seq_num_diff <= -TQ_LOCAL_WINDOW_SIZE)
+                || (seq_num_diff >= EXPECTED_SEQNO_RANGE)) {
+                if (time_after(jiffies, *last_reset +
+                        msecs_to_jiffies(RESET_PROTECTION_MS))) {
+
+                        *last_reset = jiffies;
+                        bat_dbg(DBG_BATMAN, bat_priv,
+                                "old packet received, start protection\n");
+
+                        return 0;
+                } else
+                        return 1;
+        }
+        return 0;
+}
+
+/* processes a batman packet for all interfaces, adjusts the sequence number and
+ * finds out whether it is a duplicate.
+ * returns:
+ *   1 the packet is a duplicate
+ *   0 the packet has not yet been received
+ *  -1 the packet is old and has been received while the seqno window
+ *     was protected. Caller should drop it.
+ */
+static char count_real_packets(struct ethhdr *ethhdr,
+                               struct batman_packet *batman_packet,
+                               struct batman_if *if_incoming)
+{
+        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+        struct orig_node *orig_node;
+        struct neigh_node *tmp_neigh_node;
+        char is_duplicate = 0;
+        int32_t seq_diff;
+        int need_update = 0;
+        int set_mark;
+
+        orig_node = get_orig_node(bat_priv, batman_packet->orig);
+        if (!orig_node)
+                return 0;
+
+        seq_diff = batman_packet->seqno - orig_node->last_real_seqno;
+
+        /* signalize caller that the packet is to be dropped. */
+        if (window_protected(bat_priv, seq_diff,
+                             &orig_node->batman_seqno_reset))
+                return -1;
+
+        list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) {
+
+                is_duplicate |= get_bit_status(tmp_neigh_node->real_bits,
+                                               orig_node->last_real_seqno,
+                                               batman_packet->seqno);
+
+                if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) &&
+                    (tmp_neigh_node->if_incoming == if_incoming))
+                        set_mark = 1;
+                else
+                        set_mark = 0;
+
+                /* if the window moved, set the update flag. */
+                need_update |= bit_get_packet(bat_priv,
+                                              tmp_neigh_node->real_bits,
+                                              seq_diff, set_mark);
+
+                tmp_neigh_node->real_packet_count =
+                        bit_packet_count(tmp_neigh_node->real_bits);
+        }
+
+        if (need_update) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "updating last_seqno: old %d, new %d\n",
+                        orig_node->last_real_seqno, batman_packet->seqno);
+                orig_node->last_real_seqno = batman_packet->seqno;
+        }
+
+        return is_duplicate;
+}
+
+/* copy primary address for bonding */
+static void mark_bonding_address(struct bat_priv *bat_priv,
+                                 struct orig_node *orig_node,
+                                 struct orig_node *orig_neigh_node,
+                                 struct batman_packet *batman_packet)
+
+{
+        if (batman_packet->flags & PRIMARIES_FIRST_HOP)
+                memcpy(orig_neigh_node->primary_addr,
+                       orig_node->orig, ETH_ALEN);
+
+        return;
+}
+
+/* mark possible bond.candidates in the neighbor list */
+void update_bonding_candidates(struct bat_priv *bat_priv,
+                               struct orig_node *orig_node)
+{
+        int candidates;
+        int interference_candidate;
+        int best_tq;
+        struct neigh_node *tmp_neigh_node, *tmp_neigh_node2;
+        struct neigh_node *first_candidate, *last_candidate;
+
+        /* update the candidates for this originator */
+        if (!orig_node->router) {
+                orig_node->bond.candidates = 0;
+                return;
+        }
+
+        best_tq = orig_node->router->tq_avg;
+
+        /* update bond.candidates */
+
+        candidates = 0;
+
+        /* mark other nodes which also received "PRIMARIES FIRST HOP" packets
+         * as "bonding partner" */
+
+        /* first, zero the list */
+        list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) {
+                tmp_neigh_node->next_bond_candidate = NULL;
+        }
+
+        first_candidate = NULL;
+        last_candidate = NULL;
+        list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) {
+
+                /* only consider if it has the same primary address ...  */
+                if (memcmp(orig_node->orig,
+                                tmp_neigh_node->orig_node->primary_addr,
+                                ETH_ALEN) != 0)
+                        continue;
+
+                /* ... and is good enough to be considered */
+                if (tmp_neigh_node->tq_avg < best_tq - BONDING_TQ_THRESHOLD)
+                        continue;
+
+                /* check if we have another candidate with the same
+                 * mac address or interface. If we do, we won't
+                 * select this candidate because of possible interference. */
+
+                interference_candidate = 0;
+                list_for_each_entry(tmp_neigh_node2,
+                                &orig_node->neigh_list, list) {
+
+                        if (tmp_neigh_node2 == tmp_neigh_node)
+                                continue;
+
+                        /* we only care if the other candidate is even
+                         * considered as candidate. */
+                        if (!tmp_neigh_node2->next_bond_candidate)
+                                continue;
+
+
+                        if ((tmp_neigh_node->if_incoming ==
+                                tmp_neigh_node2->if_incoming)
+                                || (memcmp(tmp_neigh_node->addr,
+                                tmp_neigh_node2->addr, ETH_ALEN) == 0)) {
+
+                                interference_candidate = 1;
+                                break;
+                        }
+                }
+                /* don't care further if it is an interference candidate */
+                if (interference_candidate)
+                        continue;
+
+                if (!first_candidate) {
+                        first_candidate = tmp_neigh_node;
+                        tmp_neigh_node->next_bond_candidate = first_candidate;
+                } else
+                        tmp_neigh_node->next_bond_candidate = last_candidate;
+
+                last_candidate = tmp_neigh_node;
+
+                candidates++;
+        }
+
+        if (candidates > 0) {
+                first_candidate->next_bond_candidate = last_candidate;
+                orig_node->bond.selected = first_candidate;
+        }
+
+        orig_node->bond.candidates = candidates;
+}
+
+void receive_bat_packet(struct ethhdr *ethhdr,
+                                struct batman_packet *batman_packet,
+                                unsigned char *hna_buff, int hna_buff_len,
+                                struct batman_if *if_incoming)
+{
+        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+        struct batman_if *batman_if;
+        struct orig_node *orig_neigh_node, *orig_node;
+        char has_directlink_flag;
+        char is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0;
+        char is_broadcast = 0, is_bidirectional, is_single_hop_neigh;
+        char is_duplicate;
+        uint32_t if_incoming_seqno;
+
+        /* Silently drop when the batman packet is actually not a
+         * correct packet.
+         *
+         * This might happen if a packet is padded (e.g. Ethernet has a
+         * minimum frame length of 64 byte) and the aggregation interprets
+         * it as an additional length.
+         *
+         * TODO: A more sane solution would be to have a bit in the
+         * batman_packet to detect whether the packet is the last
+         * packet in an aggregation.  Here we expect that the padding
+         * is always zero (or not 0x01)
+         */
+        if (batman_packet->packet_type != BAT_PACKET)
+                return;
+
+        /* could be changed by schedule_own_packet() */
+        if_incoming_seqno = atomic_read(&if_incoming->seqno);
+
+        has_directlink_flag = (batman_packet->flags & DIRECTLINK ? 1 : 0);
+
+        is_single_hop_neigh = (compare_orig(ethhdr->h_source,
+                                            batman_packet->orig) ? 1 : 0);
+
+        bat_dbg(DBG_BATMAN, bat_priv,
+                "Received BATMAN packet via NB: %pM, IF: %s [%pM] "
+                "(from OG: %pM, via prev OG: %pM, seqno %d, tq %d, "
+                "TTL %d, V %d, IDF %d)\n",
+                ethhdr->h_source, if_incoming->net_dev->name,
+                if_incoming->net_dev->dev_addr, batman_packet->orig,
+                batman_packet->prev_sender, batman_packet->seqno,
+                batman_packet->tq, batman_packet->ttl, batman_packet->version,
+                has_directlink_flag);
+
+        rcu_read_lock();
+        list_for_each_entry_rcu(batman_if, &if_list, list) {
+                if (batman_if->if_status != IF_ACTIVE)
+                        continue;
+
+                if (batman_if->soft_iface != if_incoming->soft_iface)
+                        continue;
+
+                if (compare_orig(ethhdr->h_source,
+                                 batman_if->net_dev->dev_addr))
+                        is_my_addr = 1;
+
+                if (compare_orig(batman_packet->orig,
+                                 batman_if->net_dev->dev_addr))
+                        is_my_orig = 1;
+
+                if (compare_orig(batman_packet->prev_sender,
+                                 batman_if->net_dev->dev_addr))
+                        is_my_oldorig = 1;
+
+                if (compare_orig(ethhdr->h_source, broadcast_addr))
+                        is_broadcast = 1;
+        }
+        rcu_read_unlock();
+
+        if (batman_packet->version != COMPAT_VERSION) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: incompatible batman version (%i)\n",
+                        batman_packet->version);
+                return;
+        }
+
+        if (is_my_addr) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: received my own broadcast (sender: %pM"
+                        ")\n",
+                        ethhdr->h_source);
+                return;
+        }
+
+        if (is_broadcast) {
+                bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: "
+                "ignoring all packets with broadcast source addr (sender: %pM"
+                ")\n", ethhdr->h_source);
+                return;
+        }
+
+        if (is_my_orig) {
+                unsigned long *word;
+                int offset;
+
+                orig_neigh_node = get_orig_node(bat_priv, ethhdr->h_source);
+
+                if (!orig_neigh_node)
+                        return;
+
+                /* neighbor has to indicate direct link and it has to
+                 * come via the corresponding interface */
+                /* if received seqno equals last send seqno save new
+                 * seqno for bidirectional check */
+                if (has_directlink_flag &&
+                    compare_orig(if_incoming->net_dev->dev_addr,
+                                 batman_packet->orig) &&
+                    (batman_packet->seqno - if_incoming_seqno + 2 == 0)) {
+                        offset = if_incoming->if_num * NUM_WORDS;
+                        word = &(orig_neigh_node->bcast_own[offset]);
+                        bit_mark(word, 0);
+                        orig_neigh_node->bcast_own_sum[if_incoming->if_num] =
+                                bit_packet_count(word);
+                }
+
+                bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: "
+                        "originator packet from myself (via neighbor)\n");
+                return;
+        }
+
+        if (is_my_oldorig) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: ignoring all rebroadcast echos (sender: "
+                        "%pM)\n", ethhdr->h_source);
+                return;
+        }
+
+        orig_node = get_orig_node(bat_priv, batman_packet->orig);
+        if (!orig_node)
+                return;
+
+        is_duplicate = count_real_packets(ethhdr, batman_packet, if_incoming);
+
+        if (is_duplicate == -1) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: packet within seqno protection time "
+                        "(sender: %pM)\n", ethhdr->h_source);
+                return;
+        }
+
+        if (batman_packet->tq == 0) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: originator packet with tq equal 0\n");
+                return;
+        }
+
+        /* avoid temporary routing loops */
+        if ((orig_node->router) &&
+            (orig_node->router->orig_node->router) &&
+            (compare_orig(orig_node->router->addr,
+                          batman_packet->prev_sender)) &&
+            !(compare_orig(batman_packet->orig, batman_packet->prev_sender)) &&
+            (compare_orig(orig_node->router->addr,
+                          orig_node->router->orig_node->router->addr))) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: ignoring all rebroadcast packets that "
+                        "may make me loop (sender: %pM)\n", ethhdr->h_source);
+                return;
+        }
+
+        /* if sender is a direct neighbor the sender mac equals
+         * originator mac */
+        orig_neigh_node = (is_single_hop_neigh ?
+                           orig_node :
+                           get_orig_node(bat_priv, ethhdr->h_source));
+        if (!orig_neigh_node)
+                return;
+
+        /* drop packet if sender is not a direct neighbor and if we
+         * don't route towards it */
+        if (!is_single_hop_neigh && (!orig_neigh_node->router)) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: OGM via unknown neighbor!\n");
+                return;
+        }
+
+        is_bidirectional = is_bidirectional_neigh(orig_node, orig_neigh_node,
+                                                batman_packet, if_incoming);
+
+        /* update ranking if it is not a duplicate or has the same
+         * seqno and similar ttl as the non-duplicate */
+        if (is_bidirectional &&
+            (!is_duplicate ||
+             ((orig_node->last_real_seqno == batman_packet->seqno) &&
+              (orig_node->last_ttl - 3 <= batman_packet->ttl))))
+                update_orig(bat_priv, orig_node, ethhdr, batman_packet,
+                            if_incoming, hna_buff, hna_buff_len, is_duplicate);
+
+        mark_bonding_address(bat_priv, orig_node,
+                             orig_neigh_node, batman_packet);
+        update_bonding_candidates(bat_priv, orig_node);
+
+        /* is single hop (direct) neighbor */
+        if (is_single_hop_neigh) {
+
+                /* mark direct link on incoming interface */
+                schedule_forward_packet(orig_node, ethhdr, batman_packet,
+                                        1, hna_buff_len, if_incoming);
+
+                bat_dbg(DBG_BATMAN, bat_priv, "Forwarding packet: "
+                        "rebroadcast neighbor packet with direct link flag\n");
+                return;
+        }
+
+        /* multihop originator */
+        if (!is_bidirectional) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: not received via bidirectional link\n");
+                return;
+        }
+
+        if (is_duplicate) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: duplicate packet received\n");
+                return;
+        }
+
+        bat_dbg(DBG_BATMAN, bat_priv,
+                "Forwarding packet: rebroadcast originator packet\n");
+        schedule_forward_packet(orig_node, ethhdr, batman_packet,
+                                0, hna_buff_len, if_incoming);
+}
+
+int recv_bat_packet(struct sk_buff *skb, struct batman_if *batman_if)
+{
+        struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
+        struct ethhdr *ethhdr;
+
+        /* drop packet if it has not necessary minimum size */
+        if (unlikely(!pskb_may_pull(skb, sizeof(struct batman_packet))))
+                return NET_RX_DROP;
+
+        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+
+        /* packet with broadcast indication but unicast recipient */
+        if (!is_broadcast_ether_addr(ethhdr->h_dest))
+                return NET_RX_DROP;
+
+        /* packet with broadcast sender address */
+        if (is_broadcast_ether_addr(ethhdr->h_source))
+                return NET_RX_DROP;
+
+        /* create a copy of the skb, if needed, to modify it. */
+        if (skb_cow(skb, 0) < 0)
+                return NET_RX_DROP;
+
+        /* keep skb linear */
+        if (skb_linearize(skb) < 0)
+                return NET_RX_DROP;
+
+        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+        receive_aggr_bat_packet(ethhdr,
+                                skb->data,
+                                skb_headlen(skb),
+                                batman_if);
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+        kfree_skb(skb);
+        return NET_RX_SUCCESS;
+}
+
+static int recv_my_icmp_packet(struct bat_priv *bat_priv,
+                               struct sk_buff *skb, size_t icmp_len)
+{
+        struct orig_node *orig_node;
+        struct icmp_packet_rr *icmp_packet;
+        struct ethhdr *ethhdr;
+        struct batman_if *batman_if;
+        int ret;
+        uint8_t dstaddr[ETH_ALEN];
+
+        icmp_packet = (struct icmp_packet_rr *)skb->data;
+        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+
+        /* add data to device queue */
+        if (icmp_packet->msg_type != ECHO_REQUEST) {
+                bat_socket_receive_packet(icmp_packet, icmp_len);
+                return NET_RX_DROP;
+        }
+
+        if (!bat_priv->primary_if)
+                return NET_RX_DROP;
+
+        /* answer echo request (ping) */
+        /* get routing information */
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+        orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
+                                                   compare_orig, choose_orig,
+                                                   icmp_packet->orig));
+        ret = NET_RX_DROP;
+
+        if ((orig_node) && (orig_node->router)) {
+
+                /* don't lock while sending the packets ... we therefore
+                 * copy the required data before sending */
+                batman_if = orig_node->router->if_incoming;
+                memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
+                spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+                /* create a copy of the skb, if needed, to modify it. */
+                if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
+                        return NET_RX_DROP;
+
+                icmp_packet = (struct icmp_packet_rr *)skb->data;
+                ethhdr = (struct ethhdr *)skb_mac_header(skb);
+
+                memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN);
+                memcpy(icmp_packet->orig,
+                       bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
+                icmp_packet->msg_type = ECHO_REPLY;
+                icmp_packet->ttl = TTL;
+
+                send_skb_packet(skb, batman_if, dstaddr);
+                ret = NET_RX_SUCCESS;
+
+        } else
+                spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+        return ret;
+}
+
+static int recv_icmp_ttl_exceeded(struct bat_priv *bat_priv,
+                                  struct sk_buff *skb, size_t icmp_len)
+{
+        struct orig_node *orig_node;
+        struct icmp_packet *icmp_packet;
+        struct ethhdr *ethhdr;
+        struct batman_if *batman_if;
+        int ret;
+        uint8_t dstaddr[ETH_ALEN];
+
+        icmp_packet = (struct icmp_packet *)skb->data;
+        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+
+        /* send TTL exceeded if packet is an echo request (traceroute) */
+        if (icmp_packet->msg_type != ECHO_REQUEST) {
+                pr_debug("Warning - can't forward icmp packet from %pM to "
+                         "%pM: ttl exceeded\n", icmp_packet->orig,
+                         icmp_packet->dst);
+                return NET_RX_DROP;
+        }
+
+        if (!bat_priv->primary_if)
+                return NET_RX_DROP;
+
+        /* get routing information */
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+        orig_node = ((struct orig_node *)
+                     hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
+                               icmp_packet->orig));
+        ret = NET_RX_DROP;
+
+        if ((orig_node) && (orig_node->router)) {
+
+                /* don't lock while sending the packets ... we therefore
+                 * copy the required data before sending */
+                batman_if = orig_node->router->if_incoming;
+                memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
+                spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+                /* create a copy of the skb, if needed, to modify it. */
+                if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
+                        return NET_RX_DROP;
+
+                icmp_packet = (struct icmp_packet *) skb->data;
+                ethhdr = (struct ethhdr *)skb_mac_header(skb);
+
+                memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN);
+                memcpy(icmp_packet->orig,
+                       bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
+                icmp_packet->msg_type = TTL_EXCEEDED;
+                icmp_packet->ttl = TTL;
+
+                send_skb_packet(skb, batman_if, dstaddr);
+                ret = NET_RX_SUCCESS;
+
+        } else
+                spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+        return ret;
+}
+
+
+int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if)
+{
+        struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
+        struct icmp_packet_rr *icmp_packet;
+        struct ethhdr *ethhdr;
+        struct orig_node *orig_node;
+        struct batman_if *batman_if;
+        int hdr_size = sizeof(struct icmp_packet);
+        int ret;
+        uint8_t dstaddr[ETH_ALEN];
+
+        /**
+         * we truncate all incoming icmp packets if they don't match our size
+         */
+        if (skb->len >= sizeof(struct icmp_packet_rr))
+                hdr_size = sizeof(struct icmp_packet_rr);
+
+        /* drop packet if it has not necessary minimum size */
+        if (unlikely(!pskb_may_pull(skb, hdr_size)))
+                return NET_RX_DROP;
+
+        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+
+        /* packet with unicast indication but broadcast recipient */
+        if (is_broadcast_ether_addr(ethhdr->h_dest))
+                return NET_RX_DROP;
+
+        /* packet with broadcast sender address */
+        if (is_broadcast_ether_addr(ethhdr->h_source))
+                return NET_RX_DROP;
+
+        /* not for me */
+        if (!is_my_mac(ethhdr->h_dest))
+                return NET_RX_DROP;
+
+        icmp_packet = (struct icmp_packet_rr *)skb->data;
+
+        /* add record route information if not full */
+        if ((hdr_size == sizeof(struct icmp_packet_rr)) &&
+            (icmp_packet->rr_cur < BAT_RR_LEN)) {
+                memcpy(&(icmp_packet->rr[icmp_packet->rr_cur]),
+                        ethhdr->h_dest, ETH_ALEN);
+                icmp_packet->rr_cur++;
+        }
+
+        /* packet for me */
+        if (is_my_mac(icmp_packet->dst))
+                return recv_my_icmp_packet(bat_priv, skb, hdr_size);
+
+        /* TTL exceeded */
+        if (icmp_packet->ttl < 2)
+                return recv_icmp_ttl_exceeded(bat_priv, skb, hdr_size);
+
+        ret = NET_RX_DROP;
+
+        /* get routing information */
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+        orig_node = ((struct orig_node *)
+                     hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
+                               icmp_packet->dst));
+
+        if ((orig_node) && (orig_node->router)) {
+
+                /* don't lock while sending the packets ... we therefore
+                 * copy the required data before sending */
+                batman_if = orig_node->router->if_incoming;
+                memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
+                spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+                /* create a copy of the skb, if needed, to modify it. */
+                if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
+                        return NET_RX_DROP;
+
+                icmp_packet = (struct icmp_packet_rr *)skb->data;
+                ethhdr = (struct ethhdr *)skb_mac_header(skb);
+
+                /* decrement ttl */
+                icmp_packet->ttl--;
+
+                /* route it */
+                send_skb_packet(skb, batman_if, dstaddr);
+                ret = NET_RX_SUCCESS;
+
+        } else
+                spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+        return ret;
+}
+
+/* find a suitable router for this originator, and use
+ * bonding if possible. */
+struct neigh_node *find_router(struct bat_priv *bat_priv,
+                               struct orig_node *orig_node,
+                               struct batman_if *recv_if)
+{
+        struct orig_node *primary_orig_node;
+        struct orig_node *router_orig;
+        struct neigh_node *router, *first_candidate, *best_router;
+        static uint8_t zero_mac[ETH_ALEN] = {0, 0, 0, 0, 0, 0};
+        int bonding_enabled;
+
+        if (!orig_node)
+                return NULL;
+
+        if (!orig_node->router)
+                return NULL;
+
+        /* without bonding, the first node should
+         * always choose the default router. */
+
+        bonding_enabled = atomic_read(&bat_priv->bonding);
+
+        if ((!recv_if) && (!bonding_enabled))
+                return orig_node->router;
+
+        router_orig = orig_node->router->orig_node;
+
+        /* if we have something in the primary_addr, we can search
+         * for a potential bonding candidate. */
+        if (memcmp(router_orig->primary_addr, zero_mac, ETH_ALEN) == 0)
+                return orig_node->router;
+
+        /* find the orig_node which has the primary interface. might
+         * even be the same as our router_orig in many cases */
+
+        if (memcmp(router_orig->primary_addr,
+                                router_orig->orig, ETH_ALEN) == 0) {
+                primary_orig_node = router_orig;
+        } else {
+                primary_orig_node = hash_find(bat_priv->orig_hash, compare_orig,
+                                               choose_orig,
+                                               router_orig->primary_addr);
+
+                if (!primary_orig_node)
+                        return orig_node->router;
+        }
+
+        /* with less than 2 candidates, we can't do any
+         * bonding and prefer the original router. */
+
+        if (primary_orig_node->bond.candidates < 2)
+                return orig_node->router;
+
+
+        /* all nodes between should choose a candidate which
+         * is is not on the interface where the packet came
+         * in. */
+        first_candidate = primary_orig_node->bond.selected;
+        router = first_candidate;
+
+        if (bonding_enabled) {
+                /* in the bonding case, send the packets in a round
+                 * robin fashion over the remaining interfaces. */
+                do {
+                        /* recv_if == NULL on the first node. */
+                        if (router->if_incoming != recv_if)
+                                break;
+
+                        router = router->next_bond_candidate;
+                } while (router != first_candidate);
+
+                primary_orig_node->bond.selected = router->next_bond_candidate;
+
+        } else {
+                /* if bonding is disabled, use the best of the
+                 * remaining candidates which are not using
+                 * this interface. */
+                best_router = first_candidate;
+
+                do {
+                        /* recv_if == NULL on the first node. */
+                        if ((router->if_incoming != recv_if) &&
+                                (router->tq_avg > best_router->tq_avg))
+                                        best_router = router;
+
+                        router = router->next_bond_candidate;
+                } while (router != first_candidate);
+
+                router = best_router;
+        }
+
+        return router;
+}
+
+static int check_unicast_packet(struct sk_buff *skb, int hdr_size)
+{
+        struct ethhdr *ethhdr;
+
+        /* drop packet if it has not necessary minimum size */
+        if (unlikely(!pskb_may_pull(skb, hdr_size)))
+                return -1;
+
+        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+
+        /* packet with unicast indication but broadcast recipient */
+        if (is_broadcast_ether_addr(ethhdr->h_dest))
+                return -1;
+
+        /* packet with broadcast sender address */
+        if (is_broadcast_ether_addr(ethhdr->h_source))
+                return -1;
+
+        /* not for me */
+        if (!is_my_mac(ethhdr->h_dest))
+                return -1;
+
+        return 0;
+}
+
+int route_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if,
+                         int hdr_size)
+{
+        struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
+        struct orig_node *orig_node;
+        struct neigh_node *router;
+        struct batman_if *batman_if;
+        uint8_t dstaddr[ETH_ALEN];
+        struct unicast_packet *unicast_packet;
+        struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        int ret;
+        struct sk_buff *new_skb;
+
+        unicast_packet = (struct unicast_packet *)skb->data;
+
+        /* TTL exceeded */
+        if (unicast_packet->ttl < 2) {
+                pr_debug("Warning - can't forward unicast packet from %pM to "
+                         "%pM: ttl exceeded\n", ethhdr->h_source,
+                         unicast_packet->dest);
+                return NET_RX_DROP;
+        }
+
+        /* get routing information */
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+        orig_node = ((struct orig_node *)
+                     hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
+                               unicast_packet->dest));
+
+        router = find_router(bat_priv, orig_node, recv_if);
+
+        if (!router) {
+                spin_unlock_bh(&bat_priv->orig_hash_lock);
+                return NET_RX_DROP;
+        }
+
+        /* don't lock while sending the packets ... we therefore
+         * copy the required data before sending */
+
+        batman_if = router->if_incoming;
+        memcpy(dstaddr, router->addr, ETH_ALEN);
+
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+        /* create a copy of the skb, if needed, to modify it. */
+        if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
+                return NET_RX_DROP;
+
+        unicast_packet = (struct unicast_packet *)skb->data;
+
+        if (unicast_packet->packet_type == BAT_UNICAST &&
+            atomic_read(&bat_priv->fragmentation) &&
+            skb->len > batman_if->net_dev->mtu)
+                return frag_send_skb(skb, bat_priv, batman_if,
+                                     dstaddr);
+
+        if (unicast_packet->packet_type == BAT_UNICAST_FRAG &&
+            2 * skb->len - hdr_size <= batman_if->net_dev->mtu) {
+
+                ret = frag_reassemble_skb(skb, bat_priv, &new_skb);
+
+                if (ret == NET_RX_DROP)
+                        return NET_RX_DROP;
+
+                /* packet was buffered for late merge */
+                if (!new_skb)
+                        return NET_RX_SUCCESS;
+
+                skb = new_skb;
+                unicast_packet = (struct unicast_packet *)skb->data;
+        }
+
+        /* decrement ttl */
+        unicast_packet->ttl--;
+
+        /* route it */
+        send_skb_packet(skb, batman_if, dstaddr);
+
+        return NET_RX_SUCCESS;
+}
+
+int recv_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if)
+{
+        struct unicast_packet *unicast_packet;
+        int hdr_size = sizeof(struct unicast_packet);
+
+        if (check_unicast_packet(skb, hdr_size) < 0)
+                return NET_RX_DROP;
+
+        unicast_packet = (struct unicast_packet *)skb->data;
+
+        /* packet for me */
+        if (is_my_mac(unicast_packet->dest)) {
+                interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size);
+                return NET_RX_SUCCESS;
+        }
+
+        return route_unicast_packet(skb, recv_if, hdr_size);
+}
+
+int recv_ucast_frag_packet(struct sk_buff *skb, struct batman_if *recv_if)
+{
+        struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
+        struct unicast_frag_packet *unicast_packet;
+        int hdr_size = sizeof(struct unicast_frag_packet);
+        struct sk_buff *new_skb = NULL;
+        int ret;
+
+        if (check_unicast_packet(skb, hdr_size) < 0)
+                return NET_RX_DROP;
+
+        unicast_packet = (struct unicast_frag_packet *)skb->data;
+
+        /* packet for me */
+        if (is_my_mac(unicast_packet->dest)) {
+
+                ret = frag_reassemble_skb(skb, bat_priv, &new_skb);
+
+                if (ret == NET_RX_DROP)
+                        return NET_RX_DROP;
+
+                /* packet was buffered for late merge */
+                if (!new_skb)
+                        return NET_RX_SUCCESS;
+
+                interface_rx(recv_if->soft_iface, new_skb, recv_if,
+                             sizeof(struct unicast_packet));
+                return NET_RX_SUCCESS;
+        }
+
+        return route_unicast_packet(skb, recv_if, hdr_size);
+}
+
+
+int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if)
+{
+        struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
+        struct orig_node *orig_node;
+        struct bcast_packet *bcast_packet;
+        struct ethhdr *ethhdr;
+        int hdr_size = sizeof(struct bcast_packet);
+        int32_t seq_diff;
+
+        /* drop packet if it has not necessary minimum size */
+        if (unlikely(!pskb_may_pull(skb, hdr_size)))
+                return NET_RX_DROP;
+
+        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+
+        /* packet with broadcast indication but unicast recipient */
+        if (!is_broadcast_ether_addr(ethhdr->h_dest))
+                return NET_RX_DROP;
+
+        /* packet with broadcast sender address */
+        if (is_broadcast_ether_addr(ethhdr->h_source))
+                return NET_RX_DROP;
+
+        /* ignore broadcasts sent by myself */
+        if (is_my_mac(ethhdr->h_source))
+                return NET_RX_DROP;
+
+        bcast_packet = (struct bcast_packet *)skb->data;
+
+        /* ignore broadcasts originated by myself */
+        if (is_my_mac(bcast_packet->orig))
+                return NET_RX_DROP;
+
+        if (bcast_packet->ttl < 2)
+                return NET_RX_DROP;
+
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+        orig_node = ((struct orig_node *)
+                     hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
+                               bcast_packet->orig));
+
+        if (!orig_node) {
+                spin_unlock_bh(&bat_priv->orig_hash_lock);
+                return NET_RX_DROP;
+        }
+
+        /* check whether the packet is a duplicate */
+        if (get_bit_status(orig_node->bcast_bits,
+                           orig_node->last_bcast_seqno,
+                           ntohl(bcast_packet->seqno))) {
+                spin_unlock_bh(&bat_priv->orig_hash_lock);
+                return NET_RX_DROP;
+        }
+
+        seq_diff = ntohl(bcast_packet->seqno) - orig_node->last_bcast_seqno;
+
+        /* check whether the packet is old and the host just restarted. */
+        if (window_protected(bat_priv, seq_diff,
+                             &orig_node->bcast_seqno_reset)) {
+                spin_unlock_bh(&bat_priv->orig_hash_lock);
+                return NET_RX_DROP;
+        }
+
+        /* mark broadcast in flood history, update window position
+         * if required. */
+        if (bit_get_packet(bat_priv, orig_node->bcast_bits, seq_diff, 1))
+                orig_node->last_bcast_seqno = ntohl(bcast_packet->seqno);
+
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+        /* rebroadcast packet */
+        add_bcast_packet_to_list(bat_priv, skb);
+
+        /* broadcast for me */
+        interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size);
+
+        return NET_RX_SUCCESS;
+}
+
+int recv_vis_packet(struct sk_buff *skb, struct batman_if *recv_if)
+{
+        struct vis_packet *vis_packet;
+        struct ethhdr *ethhdr;
+        struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
+        int hdr_size = sizeof(struct vis_packet);
+
+        /* keep skb linear */
+        if (skb_linearize(skb) < 0)
+                return NET_RX_DROP;
+
+        if (unlikely(!pskb_may_pull(skb, hdr_size)))
+                return NET_RX_DROP;
+
+        vis_packet = (struct vis_packet *)skb->data;
+        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+
+        /* not for me */
+        if (!is_my_mac(ethhdr->h_dest))
+                return NET_RX_DROP;
+
+        /* ignore own packets */
+        if (is_my_mac(vis_packet->vis_orig))
+                return NET_RX_DROP;
+
+        if (is_my_mac(vis_packet->sender_orig))
+                return NET_RX_DROP;
+
+        switch (vis_packet->vis_type) {
+        case VIS_TYPE_SERVER_SYNC:
+                receive_server_sync_packet(bat_priv, vis_packet,
+                                           skb_headlen(skb));
+                break;
+
+        case VIS_TYPE_CLIENT_UPDATE:
+                receive_client_update_packet(bat_priv, vis_packet,
+                                             skb_headlen(skb));
+                break;
+
+        default:        /* ignore unknown packet */
+                break;
+        }
+
+        /* We take a copy of the data in the packet, so we should
+           always free the skbuf. */
+        return NET_RX_DROP;
+}
diff --git a/net/batman-adv/routing.h b/net/batman-adv/routing.h
new file mode 100644
index 000000000000..f108f230bfdb
--- /dev/null
+++ b/net/batman-adv/routing.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_ROUTING_H_
+#define _NET_BATMAN_ADV_ROUTING_H_
+
+#include "types.h"
+
+void slide_own_bcast_window(struct batman_if *batman_if);
+void receive_bat_packet(struct ethhdr *ethhdr,
+                                struct batman_packet *batman_packet,
+                                unsigned char *hna_buff, int hna_buff_len,
+                                struct batman_if *if_incoming);
+void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node,
+                   struct neigh_node *neigh_node, unsigned char *hna_buff,
+                   int hna_buff_len);
+int route_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if,
+                         int hdr_size);
+int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if);
+int recv_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if);
+int recv_ucast_frag_packet(struct sk_buff *skb, struct batman_if *recv_if);
+int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if);
+int recv_vis_packet(struct sk_buff *skb, struct batman_if *recv_if);
+int recv_bat_packet(struct sk_buff *skb, struct batman_if *recv_if);
+struct neigh_node *find_router(struct bat_priv *bat_priv,
+                struct orig_node *orig_node, struct batman_if *recv_if);
+void update_bonding_candidates(struct bat_priv *bat_priv,
+                               struct orig_node *orig_node);
+
+#endif /* _NET_BATMAN_ADV_ROUTING_H_ */
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
new file mode 100644
index 000000000000..b89b9f7709ae
--- /dev/null
+++ b/net/batman-adv/send.c
@@ -0,0 +1,585 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "send.h"
+#include "routing.h"
+#include "translation-table.h"
+#include "soft-interface.h"
+#include "hard-interface.h"
+#include "types.h"
+#include "vis.h"
+#include "aggregation.h"
+#include "gateway_common.h"
+#include "originator.h"
+
+static void send_outstanding_bcast_packet(struct work_struct *work);
+
+/* apply hop penalty for a normal link */
+static uint8_t hop_penalty(const uint8_t tq, struct bat_priv *bat_priv)
+{
+        int hop_penalty = atomic_read(&bat_priv->hop_penalty);
+        return (tq * (TQ_MAX_VALUE - hop_penalty)) / (TQ_MAX_VALUE);
+}
+
+/* when do we schedule our own packet to be sent */
+static unsigned long own_send_time(struct bat_priv *bat_priv)
+{
+        return jiffies + msecs_to_jiffies(
+                   atomic_read(&bat_priv->orig_interval) -
+                   JITTER + (random32() % 2*JITTER));
+}
+
+/* when do we schedule a forwarded packet to be sent */
+static unsigned long forward_send_time(struct bat_priv *bat_priv)
+{
+        return jiffies + msecs_to_jiffies(random32() % (JITTER/2));
+}
+
+/* send out an already prepared packet to the given address via the
+ * specified batman interface */
+int send_skb_packet(struct sk_buff *skb,
+                                struct batman_if *batman_if,
+                                uint8_t *dst_addr)
+{
+        struct ethhdr *ethhdr;
+
+        if (batman_if->if_status != IF_ACTIVE)
+                goto send_skb_err;
+
+        if (unlikely(!batman_if->net_dev))
+                goto send_skb_err;
+
+        if (!(batman_if->net_dev->flags & IFF_UP)) {
+                pr_warning("Interface %s is not up - can't send packet via "
+                           "that interface!\n", batman_if->net_dev->name);
+                goto send_skb_err;
+        }
+
+        /* push to the ethernet header. */
+        if (my_skb_head_push(skb, sizeof(struct ethhdr)) < 0)
+                goto send_skb_err;
+
+        skb_reset_mac_header(skb);
+
+        ethhdr = (struct ethhdr *) skb_mac_header(skb);
+        memcpy(ethhdr->h_source, batman_if->net_dev->dev_addr, ETH_ALEN);
+        memcpy(ethhdr->h_dest, dst_addr, ETH_ALEN);
+        ethhdr->h_proto = __constant_htons(ETH_P_BATMAN);
+
+        skb_set_network_header(skb, ETH_HLEN);
+        skb->priority = TC_PRIO_CONTROL;
+        skb->protocol = __constant_htons(ETH_P_BATMAN);
+
+        skb->dev = batman_if->net_dev;
+
+        /* dev_queue_xmit() returns a negative result on error.  However on
+         * congestion and traffic shaping, it drops and returns NET_XMIT_DROP
+         * (which is > 0). This will not be treated as an error. */
+
+        return dev_queue_xmit(skb);
+send_skb_err:
+        kfree_skb(skb);
+        return NET_XMIT_DROP;
+}
+
+/* Send a packet to a given interface */
+static void send_packet_to_if(struct forw_packet *forw_packet,
+                              struct batman_if *batman_if)
+{
+        struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
+        char *fwd_str;
+        uint8_t packet_num;
+        int16_t buff_pos;
+        struct batman_packet *batman_packet;
+        struct sk_buff *skb;
+
+        if (batman_if->if_status != IF_ACTIVE)
+                return;
+
+        packet_num = 0;
+        buff_pos = 0;
+        batman_packet = (struct batman_packet *)forw_packet->skb->data;
+
+        /* adjust all flags and log packets */
+        while (aggregated_packet(buff_pos,
+                                 forw_packet->packet_len,
+                                 batman_packet->num_hna)) {
+
+                /* we might have aggregated direct link packets with an
+                 * ordinary base packet */
+                if ((forw_packet->direct_link_flags & (1 << packet_num)) &&
+                    (forw_packet->if_incoming == batman_if))
+                        batman_packet->flags |= DIRECTLINK;
+                else
+                        batman_packet->flags &= ~DIRECTLINK;
+
+                fwd_str = (packet_num > 0 ? "Forwarding" : (forw_packet->own ?
+                                                            "Sending own" :
+                                                            "Forwarding"));
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "%s %spacket (originator %pM, seqno %d, TQ %d, TTL %d,"
+                        " IDF %s) on interface %s [%pM]\n",
+                        fwd_str, (packet_num > 0 ? "aggregated " : ""),
+                        batman_packet->orig, ntohl(batman_packet->seqno),
+                        batman_packet->tq, batman_packet->ttl,
+                        (batman_packet->flags & DIRECTLINK ?
+                         "on" : "off"),
+                        batman_if->net_dev->name, batman_if->net_dev->dev_addr);
+
+                buff_pos += sizeof(struct batman_packet) +
+                        (batman_packet->num_hna * ETH_ALEN);
+                packet_num++;
+                batman_packet = (struct batman_packet *)
+                        (forw_packet->skb->data + buff_pos);
+        }
+
+        /* create clone because function is called more than once */
+        skb = skb_clone(forw_packet->skb, GFP_ATOMIC);
+        if (skb)
+                send_skb_packet(skb, batman_if, broadcast_addr);
+}
+
+/* send a batman packet */
+static void send_packet(struct forw_packet *forw_packet)
+{
+        struct batman_if *batman_if;
+        struct net_device *soft_iface;
+        struct bat_priv *bat_priv;
+        struct batman_packet *batman_packet =
+                (struct batman_packet *)(forw_packet->skb->data);
+        unsigned char directlink = (batman_packet->flags & DIRECTLINK ? 1 : 0);
+
+        if (!forw_packet->if_incoming) {
+                pr_err("Error - can't forward packet: incoming iface not "
+                       "specified\n");
+                return;
+        }
+
+        soft_iface = forw_packet->if_incoming->soft_iface;
+        bat_priv = netdev_priv(soft_iface);
+
+        if (forw_packet->if_incoming->if_status != IF_ACTIVE)
+                return;
+
+        /* multihomed peer assumed */
+        /* non-primary OGMs are only broadcasted on their interface */
+        if ((directlink && (batman_packet->ttl == 1)) ||
+            (forw_packet->own && (forw_packet->if_incoming->if_num > 0))) {
+
+                /* FIXME: what about aggregated packets ? */
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "%s packet (originator %pM, seqno %d, TTL %d) "
+                        "on interface %s [%pM]\n",
+                        (forw_packet->own ? "Sending own" : "Forwarding"),
+                        batman_packet->orig, ntohl(batman_packet->seqno),
+                        batman_packet->ttl,
+                        forw_packet->if_incoming->net_dev->name,
+                        forw_packet->if_incoming->net_dev->dev_addr);
+
+                /* skb is only used once and than forw_packet is free'd */
+                send_skb_packet(forw_packet->skb, forw_packet->if_incoming,
+                                broadcast_addr);
+                forw_packet->skb = NULL;
+
+                return;
+        }
+
+        /* broadcast on every interface */
+        rcu_read_lock();
+        list_for_each_entry_rcu(batman_if, &if_list, list) {
+                if (batman_if->soft_iface != soft_iface)
+                        continue;
+
+                send_packet_to_if(forw_packet, batman_if);
+        }
+        rcu_read_unlock();
+}
+
+static void rebuild_batman_packet(struct bat_priv *bat_priv,
+                                  struct batman_if *batman_if)
+{
+        int new_len;
+        unsigned char *new_buff;
+        struct batman_packet *batman_packet;
+
+        new_len = sizeof(struct batman_packet) +
+                        (bat_priv->num_local_hna * ETH_ALEN);
+        new_buff = kmalloc(new_len, GFP_ATOMIC);
+
+        /* keep old buffer if kmalloc should fail */
+        if (new_buff) {
+                memcpy(new_buff, batman_if->packet_buff,
+                       sizeof(struct batman_packet));
+                batman_packet = (struct batman_packet *)new_buff;
+
+                batman_packet->num_hna = hna_local_fill_buffer(bat_priv,
+                                new_buff + sizeof(struct batman_packet),
+                                new_len - sizeof(struct batman_packet));
+
+                kfree(batman_if->packet_buff);
+                batman_if->packet_buff = new_buff;
+                batman_if->packet_len = new_len;
+        }
+}
+
+void schedule_own_packet(struct batman_if *batman_if)
+{
+        struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
+        unsigned long send_time;
+        struct batman_packet *batman_packet;
+        int vis_server;
+
+        if ((batman_if->if_status == IF_NOT_IN_USE) ||
+            (batman_if->if_status == IF_TO_BE_REMOVED))
+                return;
+
+        vis_server = atomic_read(&bat_priv->vis_mode);
+
+        /**
+         * the interface gets activated here to avoid race conditions between
+         * the moment of activating the interface in
+         * hardif_activate_interface() where the originator mac is set and
+         * outdated packets (especially uninitialized mac addresses) in the
+         * packet queue
+         */
+        if (batman_if->if_status == IF_TO_BE_ACTIVATED)
+                batman_if->if_status = IF_ACTIVE;
+
+        /* if local hna has changed and interface is a primary interface */
+        if ((atomic_read(&bat_priv->hna_local_changed)) &&
+            (batman_if == bat_priv->primary_if))
+                rebuild_batman_packet(bat_priv, batman_if);
+
+        /**
+         * NOTE: packet_buff might just have been re-allocated in
+         * rebuild_batman_packet()
+         */
+        batman_packet = (struct batman_packet *)batman_if->packet_buff;
+
+        /* change sequence number to network order */
+        batman_packet->seqno =
+                htonl((uint32_t)atomic_read(&batman_if->seqno));
+
+        if (vis_server == VIS_TYPE_SERVER_SYNC)
+                batman_packet->flags |= VIS_SERVER;
+        else
+                batman_packet->flags &= ~VIS_SERVER;
+
+        if ((batman_if == bat_priv->primary_if) &&
+            (atomic_read(&bat_priv->gw_mode) == GW_MODE_SERVER))
+                batman_packet->gw_flags =
+                                (uint8_t)atomic_read(&bat_priv->gw_bandwidth);
+        else
+                batman_packet->gw_flags = 0;
+
+        atomic_inc(&batman_if->seqno);
+
+        slide_own_bcast_window(batman_if);
+        send_time = own_send_time(bat_priv);
+        add_bat_packet_to_list(bat_priv,
+                               batman_if->packet_buff,
+                               batman_if->packet_len,
+                               batman_if, 1, send_time);
+}
+
+void schedule_forward_packet(struct orig_node *orig_node,
+                             struct ethhdr *ethhdr,
+                             struct batman_packet *batman_packet,
+                             uint8_t directlink, int hna_buff_len,
+                             struct batman_if *if_incoming)
+{
+        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+        unsigned char in_tq, in_ttl, tq_avg = 0;
+        unsigned long send_time;
+
+        if (batman_packet->ttl <= 1) {
+                bat_dbg(DBG_BATMAN, bat_priv, "ttl exceeded\n");
+                return;
+        }
+
+        in_tq = batman_packet->tq;
+        in_ttl = batman_packet->ttl;
+
+        batman_packet->ttl--;
+        memcpy(batman_packet->prev_sender, ethhdr->h_source, ETH_ALEN);
+
+        /* rebroadcast tq of our best ranking neighbor to ensure the rebroadcast
+         * of our best tq value */
+        if ((orig_node->router) && (orig_node->router->tq_avg != 0)) {
+
+                /* rebroadcast ogm of best ranking neighbor as is */
+                if (!compare_orig(orig_node->router->addr, ethhdr->h_source)) {
+                        batman_packet->tq = orig_node->router->tq_avg;
+
+                        if (orig_node->router->last_ttl)
+                                batman_packet->ttl = orig_node->router->last_ttl
+                                                        - 1;
+                }
+
+                tq_avg = orig_node->router->tq_avg;
+        }
+
+        /* apply hop penalty */
+        batman_packet->tq = hop_penalty(batman_packet->tq, bat_priv);
+
+        bat_dbg(DBG_BATMAN, bat_priv,
+                "Forwarding packet: tq_orig: %i, tq_avg: %i, "
+                "tq_forw: %i, ttl_orig: %i, ttl_forw: %i\n",
+                in_tq, tq_avg, batman_packet->tq, in_ttl - 1,
+                batman_packet->ttl);
+
+        batman_packet->seqno = htonl(batman_packet->seqno);
+
+        /* switch of primaries first hop flag when forwarding */
+        batman_packet->flags &= ~PRIMARIES_FIRST_HOP;
+        if (directlink)
+                batman_packet->flags |= DIRECTLINK;
+        else
+                batman_packet->flags &= ~DIRECTLINK;
+
+        send_time = forward_send_time(bat_priv);
+        add_bat_packet_to_list(bat_priv,
+                               (unsigned char *)batman_packet,
+                               sizeof(struct batman_packet) + hna_buff_len,
+                               if_incoming, 0, send_time);
+}
+
+static void forw_packet_free(struct forw_packet *forw_packet)
+{
+        if (forw_packet->skb)
+                kfree_skb(forw_packet->skb);
+        kfree(forw_packet);
+}
+
+static void _add_bcast_packet_to_list(struct bat_priv *bat_priv,
+                                      struct forw_packet *forw_packet,
+                                      unsigned long send_time)
+{
+        INIT_HLIST_NODE(&forw_packet->list);
+
+        /* add new packet to packet list */
+        spin_lock_bh(&bat_priv->forw_bcast_list_lock);
+        hlist_add_head(&forw_packet->list, &bat_priv->forw_bcast_list);
+        spin_unlock_bh(&bat_priv->forw_bcast_list_lock);
+
+        /* start timer for this packet */
+        INIT_DELAYED_WORK(&forw_packet->delayed_work,
+                          send_outstanding_bcast_packet);
+        queue_delayed_work(bat_event_workqueue, &forw_packet->delayed_work,
+                           send_time);
+}
+
+#define atomic_dec_not_zero(v)          atomic_add_unless((v), -1, 0)
+/* add a broadcast packet to the queue and setup timers. broadcast packets
+ * are sent multiple times to increase probability for beeing received.
+ *
+ * This function returns NETDEV_TX_OK on success and NETDEV_TX_BUSY on
+ * errors.
+ *
+ * The skb is not consumed, so the caller should make sure that the
+ * skb is freed. */
+int add_bcast_packet_to_list(struct bat_priv *bat_priv, struct sk_buff *skb)
+{
+        struct forw_packet *forw_packet;
+        struct bcast_packet *bcast_packet;
+
+        if (!atomic_dec_not_zero(&bat_priv->bcast_queue_left)) {
+                bat_dbg(DBG_BATMAN, bat_priv, "bcast packet queue full\n");
+                goto out;
+        }
+
+        if (!bat_priv->primary_if)
+                goto out;
+
+        forw_packet = kmalloc(sizeof(struct forw_packet), GFP_ATOMIC);
+
+        if (!forw_packet)
+                goto out_and_inc;
+
+        skb = skb_copy(skb, GFP_ATOMIC);
+        if (!skb)
+                goto packet_free;
+
+        /* as we have a copy now, it is safe to decrease the TTL */
+        bcast_packet = (struct bcast_packet *)skb->data;
+        bcast_packet->ttl--;
+
+        skb_reset_mac_header(skb);
+
+        forw_packet->skb = skb;
+        forw_packet->if_incoming = bat_priv->primary_if;
+
+        /* how often did we send the bcast packet ? */
+        forw_packet->num_packets = 0;
+
+        _add_bcast_packet_to_list(bat_priv, forw_packet, 1);
+        return NETDEV_TX_OK;
+
+packet_free:
+        kfree(forw_packet);
+out_and_inc:
+        atomic_inc(&bat_priv->bcast_queue_left);
+out:
+        return NETDEV_TX_BUSY;
+}
+
+static void send_outstanding_bcast_packet(struct work_struct *work)
+{
+        struct batman_if *batman_if;
+        struct delayed_work *delayed_work =
+                container_of(work, struct delayed_work, work);
+        struct forw_packet *forw_packet =
+                container_of(delayed_work, struct forw_packet, delayed_work);
+        struct sk_buff *skb1;
+        struct net_device *soft_iface = forw_packet->if_incoming->soft_iface;
+        struct bat_priv *bat_priv = netdev_priv(soft_iface);
+
+        spin_lock_bh(&bat_priv->forw_bcast_list_lock);
+        hlist_del(&forw_packet->list);
+        spin_unlock_bh(&bat_priv->forw_bcast_list_lock);
+
+        if (atomic_read(&bat_priv->mesh_state) == MESH_DEACTIVATING)
+                goto out;
+
+        /* rebroadcast packet */
+        rcu_read_lock();
+        list_for_each_entry_rcu(batman_if, &if_list, list) {
+                if (batman_if->soft_iface != soft_iface)
+                        continue;
+
+                /* send a copy of the saved skb */
+                skb1 = skb_clone(forw_packet->skb, GFP_ATOMIC);
+                if (skb1)
+                        send_skb_packet(skb1, batman_if, broadcast_addr);
+        }
+        rcu_read_unlock();
+
+        forw_packet->num_packets++;
+
+        /* if we still have some more bcasts to send */
+        if (forw_packet->num_packets < 3) {
+                _add_bcast_packet_to_list(bat_priv, forw_packet,
+                                          ((5 * HZ) / 1000));
+                return;
+        }
+
+out:
+        forw_packet_free(forw_packet);
+        atomic_inc(&bat_priv->bcast_queue_left);
+}
+
+void send_outstanding_bat_packet(struct work_struct *work)
+{
+        struct delayed_work *delayed_work =
+                container_of(work, struct delayed_work, work);
+        struct forw_packet *forw_packet =
+                container_of(delayed_work, struct forw_packet, delayed_work);
+        struct bat_priv *bat_priv;
+
+        bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface);
+        spin_lock_bh(&bat_priv->forw_bat_list_lock);
+        hlist_del(&forw_packet->list);
+        spin_unlock_bh(&bat_priv->forw_bat_list_lock);
+
+        if (atomic_read(&bat_priv->mesh_state) == MESH_DEACTIVATING)
+                goto out;
+
+        send_packet(forw_packet);
+
+        /**
+         * we have to have at least one packet in the queue
+         * to determine the queues wake up time unless we are
+         * shutting down
+         */
+        if (forw_packet->own)
+                schedule_own_packet(forw_packet->if_incoming);
+
+out:
+        /* don't count own packet */
+        if (!forw_packet->own)
+                atomic_inc(&bat_priv->batman_queue_left);
+
+        forw_packet_free(forw_packet);
+}
+
+void purge_outstanding_packets(struct bat_priv *bat_priv,
+                               struct batman_if *batman_if)
+{
+        struct forw_packet *forw_packet;
+        struct hlist_node *tmp_node, *safe_tmp_node;
+
+        if (batman_if)
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "purge_outstanding_packets(): %s\n",
+                        batman_if->net_dev->name);
+        else
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "purge_outstanding_packets()\n");
+
+        /* free bcast list */
+        spin_lock_bh(&bat_priv->forw_bcast_list_lock);
+        hlist_for_each_entry_safe(forw_packet, tmp_node, safe_tmp_node,
+                                  &bat_priv->forw_bcast_list, list) {
+
+                /**
+                 * if purge_outstanding_packets() was called with an argmument
+                 * we delete only packets belonging to the given interface
+                 */
+                if ((batman_if) &&
+                    (forw_packet->if_incoming != batman_if))
+                        continue;
+
+                spin_unlock_bh(&bat_priv->forw_bcast_list_lock);
+
+                /**
+                 * send_outstanding_bcast_packet() will lock the list to
+                 * delete the item from the list
+                 */
+                cancel_delayed_work_sync(&forw_packet->delayed_work);
+                spin_lock_bh(&bat_priv->forw_bcast_list_lock);
+        }
+        spin_unlock_bh(&bat_priv->forw_bcast_list_lock);
+
+        /* free batman packet list */
+        spin_lock_bh(&bat_priv->forw_bat_list_lock);
+        hlist_for_each_entry_safe(forw_packet, tmp_node, safe_tmp_node,
+                                  &bat_priv->forw_bat_list, list) {
+
+                /**
+                 * if purge_outstanding_packets() was called with an argmument
+                 * we delete only packets belonging to the given interface
+                 */
+                if ((batman_if) &&
+                    (forw_packet->if_incoming != batman_if))
+                        continue;
+
+                spin_unlock_bh(&bat_priv->forw_bat_list_lock);
+
+                /**
+                 * send_outstanding_bat_packet() will lock the list to
+                 * delete the item from the list
+                 */
+                cancel_delayed_work_sync(&forw_packet->delayed_work);
+                spin_lock_bh(&bat_priv->forw_bat_list_lock);
+        }
+        spin_unlock_bh(&bat_priv->forw_bat_list_lock);
+}
diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h
new file mode 100644
index 000000000000..c4cefa8e4f85
--- /dev/null
+++ b/net/batman-adv/send.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_SEND_H_
+#define _NET_BATMAN_ADV_SEND_H_
+
+#include "types.h"
+
+int send_skb_packet(struct sk_buff *skb,
+                                struct batman_if *batman_if,
+                                uint8_t *dst_addr);
+void schedule_own_packet(struct batman_if *batman_if);
+void schedule_forward_packet(struct orig_node *orig_node,
+                             struct ethhdr *ethhdr,
+                             struct batman_packet *batman_packet,
+                             uint8_t directlink, int hna_buff_len,
+                             struct batman_if *if_outgoing);
+int add_bcast_packet_to_list(struct bat_priv *bat_priv, struct sk_buff *skb);
+void send_outstanding_bat_packet(struct work_struct *work);
+void purge_outstanding_packets(struct bat_priv *bat_priv,
+                               struct batman_if *batman_if);
+
+#endif /* _NET_BATMAN_ADV_SEND_H_ */
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
new file mode 100644
index 000000000000..e89ede192ed0
--- /dev/null
+++ b/net/batman-adv/soft-interface.c
@@ -0,0 +1,697 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "soft-interface.h"
+#include "hard-interface.h"
+#include "routing.h"
+#include "send.h"
+#include "bat_debugfs.h"
+#include "translation-table.h"
+#include "types.h"
+#include "hash.h"
+#include "gateway_common.h"
+#include "gateway_client.h"
+#include "send.h"
+#include "bat_sysfs.h"
+#include <linux/slab.h>
+#include <linux/ethtool.h>
+#include <linux/etherdevice.h>
+#include <linux/if_vlan.h>
+#include "unicast.h"
+#include "routing.h"
+
+
+static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd);
+static void bat_get_drvinfo(struct net_device *dev,
+                            struct ethtool_drvinfo *info);
+static u32 bat_get_msglevel(struct net_device *dev);
+static void bat_set_msglevel(struct net_device *dev, u32 value);
+static u32 bat_get_link(struct net_device *dev);
+static u32 bat_get_rx_csum(struct net_device *dev);
+static int bat_set_rx_csum(struct net_device *dev, u32 data);
+
+static const struct ethtool_ops bat_ethtool_ops = {
+        .get_settings = bat_get_settings,
+        .get_drvinfo = bat_get_drvinfo,
+        .get_msglevel = bat_get_msglevel,
+        .set_msglevel = bat_set_msglevel,
+        .get_link = bat_get_link,
+        .get_rx_csum = bat_get_rx_csum,
+        .set_rx_csum = bat_set_rx_csum
+};
+
+int my_skb_head_push(struct sk_buff *skb, unsigned int len)
+{
+        int result;
+
+        /**
+         * TODO: We must check if we can release all references to non-payload
+         * data using skb_header_release in our skbs to allow skb_cow_header to
+         * work optimally. This means that those skbs are not allowed to read
+         * or write any data which is before the current position of skb->data
+         * after that call and thus allow other skbs with the same data buffer
+         * to write freely in that area.
+         */
+        result = skb_cow_head(skb, len);
+        if (result < 0)
+                return result;
+
+        skb_push(skb, len);
+        return 0;
+}
+
+static void softif_neigh_free_ref(struct kref *refcount)
+{
+        struct softif_neigh *softif_neigh;
+
+        softif_neigh = container_of(refcount, struct softif_neigh, refcount);
+        kfree(softif_neigh);
+}
+
+static void softif_neigh_free_rcu(struct rcu_head *rcu)
+{
+        struct softif_neigh *softif_neigh;
+
+        softif_neigh = container_of(rcu, struct softif_neigh, rcu);
+        kref_put(&softif_neigh->refcount, softif_neigh_free_ref);
+}
+
+void softif_neigh_purge(struct bat_priv *bat_priv)
+{
+        struct softif_neigh *softif_neigh, *softif_neigh_tmp;
+        struct hlist_node *node, *node_tmp;
+
+        spin_lock_bh(&bat_priv->softif_neigh_lock);
+
+        hlist_for_each_entry_safe(softif_neigh, node, node_tmp,
+                                  &bat_priv->softif_neigh_list, list) {
+
+                if ((!time_after(jiffies, softif_neigh->last_seen +
+                                msecs_to_jiffies(SOFTIF_NEIGH_TIMEOUT))) &&
+                    (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE))
+                        continue;
+
+                hlist_del_rcu(&softif_neigh->list);
+
+                if (bat_priv->softif_neigh == softif_neigh) {
+                        bat_dbg(DBG_ROUTES, bat_priv,
+                                 "Current mesh exit point '%pM' vanished "
+                                 "(vid: %d).\n",
+                                 softif_neigh->addr, softif_neigh->vid);
+                        softif_neigh_tmp = bat_priv->softif_neigh;
+                        bat_priv->softif_neigh = NULL;
+                        kref_put(&softif_neigh_tmp->refcount,
+                                 softif_neigh_free_ref);
+                }
+
+                call_rcu(&softif_neigh->rcu, softif_neigh_free_rcu);
+        }
+
+        spin_unlock_bh(&bat_priv->softif_neigh_lock);
+}
+
+static struct softif_neigh *softif_neigh_get(struct bat_priv *bat_priv,
+                                             uint8_t *addr, short vid)
+{
+        struct softif_neigh *softif_neigh;
+        struct hlist_node *node;
+
+        rcu_read_lock();
+        hlist_for_each_entry_rcu(softif_neigh, node,
+                                 &bat_priv->softif_neigh_list, list) {
+                if (memcmp(softif_neigh->addr, addr, ETH_ALEN) != 0)
+                        continue;
+
+                if (softif_neigh->vid != vid)
+                        continue;
+
+                softif_neigh->last_seen = jiffies;
+                goto found;
+        }
+
+        softif_neigh = kzalloc(sizeof(struct softif_neigh), GFP_ATOMIC);
+        if (!softif_neigh)
+                goto out;
+
+        memcpy(softif_neigh->addr, addr, ETH_ALEN);
+        softif_neigh->vid = vid;
+        softif_neigh->last_seen = jiffies;
+        kref_init(&softif_neigh->refcount);
+
+        INIT_HLIST_NODE(&softif_neigh->list);
+        spin_lock_bh(&bat_priv->softif_neigh_lock);
+        hlist_add_head_rcu(&softif_neigh->list, &bat_priv->softif_neigh_list);
+        spin_unlock_bh(&bat_priv->softif_neigh_lock);
+
+found:
+        kref_get(&softif_neigh->refcount);
+out:
+        rcu_read_unlock();
+        return softif_neigh;
+}
+
+int softif_neigh_seq_print_text(struct seq_file *seq, void *offset)
+{
+        struct net_device *net_dev = (struct net_device *)seq->private;
+        struct bat_priv *bat_priv = netdev_priv(net_dev);
+        struct softif_neigh *softif_neigh;
+        struct hlist_node *node;
+        size_t buf_size, pos;
+        char *buff;
+
+        if (!bat_priv->primary_if) {
+                return seq_printf(seq, "BATMAN mesh %s disabled - "
+                               "please specify interfaces to enable it\n",
+                               net_dev->name);
+        }
+
+        seq_printf(seq, "Softif neighbor list (%s)\n", net_dev->name);
+
+        buf_size = 1;
+        /* Estimate length for: "   xx:xx:xx:xx:xx:xx\n" */
+        rcu_read_lock();
+        hlist_for_each_entry_rcu(softif_neigh, node,
+                                 &bat_priv->softif_neigh_list, list)
+                buf_size += 30;
+        rcu_read_unlock();
+
+        buff = kmalloc(buf_size, GFP_ATOMIC);
+        if (!buff)
+                return -ENOMEM;
+
+        buff[0] = '\0';
+        pos = 0;
+
+        rcu_read_lock();
+        hlist_for_each_entry_rcu(softif_neigh, node,
+                                 &bat_priv->softif_neigh_list, list) {
+                pos += snprintf(buff + pos, 31, "%s %pM (vid: %d)\n",
+                                bat_priv->softif_neigh == softif_neigh
+                                ? "=>" : "  ", softif_neigh->addr,
+                                softif_neigh->vid);
+        }
+        rcu_read_unlock();
+
+        seq_printf(seq, "%s", buff);
+        kfree(buff);
+        return 0;
+}
+
+static void softif_batman_recv(struct sk_buff *skb, struct net_device *dev,
+                               short vid)
+{
+        struct bat_priv *bat_priv = netdev_priv(dev);
+        struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
+        struct batman_packet *batman_packet;
+        struct softif_neigh *softif_neigh, *softif_neigh_tmp;
+
+        if (ntohs(ethhdr->h_proto) == ETH_P_8021Q)
+                batman_packet = (struct batman_packet *)
+                                        (skb->data + ETH_HLEN + VLAN_HLEN);
+        else
+                batman_packet = (struct batman_packet *)(skb->data + ETH_HLEN);
+
+        if (batman_packet->version != COMPAT_VERSION)
+                goto err;
+
+        if (batman_packet->packet_type != BAT_PACKET)
+                goto err;
+
+        if (!(batman_packet->flags & PRIMARIES_FIRST_HOP))
+                goto err;
+
+        if (is_my_mac(batman_packet->orig))
+                goto err;
+
+        softif_neigh = softif_neigh_get(bat_priv, batman_packet->orig, vid);
+
+        if (!softif_neigh)
+                goto err;
+
+        if (bat_priv->softif_neigh == softif_neigh)
+                goto out;
+
+        /* we got a neighbor but its mac is 'bigger' than ours  */
+        if (memcmp(bat_priv->primary_if->net_dev->dev_addr,
+                   softif_neigh->addr, ETH_ALEN) < 0)
+                goto out;
+
+        /* switch to new 'smallest neighbor' */
+        if ((bat_priv->softif_neigh) &&
+            (memcmp(softif_neigh->addr, bat_priv->softif_neigh->addr,
+                                                        ETH_ALEN) < 0)) {
+                bat_dbg(DBG_ROUTES, bat_priv,
+                        "Changing mesh exit point from %pM (vid: %d) "
+                        "to %pM (vid: %d).\n",
+                         bat_priv->softif_neigh->addr,
+                         bat_priv->softif_neigh->vid,
+                         softif_neigh->addr, softif_neigh->vid);
+                softif_neigh_tmp = bat_priv->softif_neigh;
+                bat_priv->softif_neigh = softif_neigh;
+                kref_put(&softif_neigh_tmp->refcount, softif_neigh_free_ref);
+                /* we need to hold the additional reference */
+                goto err;
+        }
+
+        /* close own batX device and use softif_neigh as exit node */
+        if ((!bat_priv->softif_neigh) &&
+            (memcmp(softif_neigh->addr,
+                    bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN) < 0)) {
+                bat_dbg(DBG_ROUTES, bat_priv,
+                        "Setting mesh exit point to %pM (vid: %d).\n",
+                        softif_neigh->addr, softif_neigh->vid);
+                bat_priv->softif_neigh = softif_neigh;
+                /* we need to hold the additional reference */
+                goto err;
+        }
+
+out:
+        kref_put(&softif_neigh->refcount, softif_neigh_free_ref);
+err:
+        kfree_skb(skb);
+        return;
+}
+
+static int interface_open(struct net_device *dev)
+{
+        netif_start_queue(dev);
+        return 0;
+}
+
+static int interface_release(struct net_device *dev)
+{
+        netif_stop_queue(dev);
+        return 0;
+}
+
+static struct net_device_stats *interface_stats(struct net_device *dev)
+{
+        struct bat_priv *bat_priv = netdev_priv(dev);
+        return &bat_priv->stats;
+}
+
+static int interface_set_mac_addr(struct net_device *dev, void *p)
+{
+        struct bat_priv *bat_priv = netdev_priv(dev);
+        struct sockaddr *addr = p;
+
+        if (!is_valid_ether_addr(addr->sa_data))
+                return -EADDRNOTAVAIL;
+
+        /* only modify hna-table if it has been initialised before */
+        if (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE) {
+                hna_local_remove(bat_priv, dev->dev_addr,
+                                 "mac address changed");
+                hna_local_add(dev, addr->sa_data);
+        }
+
+        memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+        return 0;
+}
+
+static int interface_change_mtu(struct net_device *dev, int new_mtu)
+{
+        /* check ranges */
+        if ((new_mtu < 68) || (new_mtu > hardif_min_mtu(dev)))
+                return -EINVAL;
+
+        dev->mtu = new_mtu;
+
+        return 0;
+}
+
+int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
+{
+        struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
+        struct bat_priv *bat_priv = netdev_priv(soft_iface);
+        struct bcast_packet *bcast_packet;
+        struct vlan_ethhdr *vhdr;
+        int data_len = skb->len, ret;
+        short vid = -1;
+        bool do_bcast = false;
+
+        if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE)
+                goto dropped;
+
+        soft_iface->trans_start = jiffies;
+
+        switch (ntohs(ethhdr->h_proto)) {
+        case ETH_P_8021Q:
+                vhdr = (struct vlan_ethhdr *)skb->data;
+                vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
+
+                if (ntohs(vhdr->h_vlan_encapsulated_proto) != ETH_P_BATMAN)
+                        break;
+
+                /* fall through */
+        case ETH_P_BATMAN:
+                softif_batman_recv(skb, soft_iface, vid);
+                goto end;
+        }
+
+        /**
+         * if we have a another chosen mesh exit node in range
+         * it will transport the packets to the mesh
+         */
+        if ((bat_priv->softif_neigh) && (bat_priv->softif_neigh->vid == vid))
+                goto dropped;
+
+        /* TODO: check this for locks */
+        hna_local_add(soft_iface, ethhdr->h_source);
+
+        if (is_multicast_ether_addr(ethhdr->h_dest)) {
+                ret = gw_is_target(bat_priv, skb);
+
+                if (ret < 0)
+                        goto dropped;
+
+                if (ret == 0)
+                        do_bcast = true;
+        }
+
+        /* ethernet packet should be broadcasted */
+        if (do_bcast) {
+                if (!bat_priv->primary_if)
+                        goto dropped;
+
+                if (my_skb_head_push(skb, sizeof(struct bcast_packet)) < 0)
+                        goto dropped;
+
+                bcast_packet = (struct bcast_packet *)skb->data;
+                bcast_packet->version = COMPAT_VERSION;
+                bcast_packet->ttl = TTL;
+
+                /* batman packet type: broadcast */
+                bcast_packet->packet_type = BAT_BCAST;
+
+                /* hw address of first interface is the orig mac because only
+                 * this mac is known throughout the mesh */
+                memcpy(bcast_packet->orig,
+                       bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
+
+                /* set broadcast sequence number */
+                bcast_packet->seqno =
+                        htonl(atomic_inc_return(&bat_priv->bcast_seqno));
+
+                add_bcast_packet_to_list(bat_priv, skb);
+
+                /* a copy is stored in the bcast list, therefore removing
+                 * the original skb. */
+                kfree_skb(skb);
+
+        /* unicast packet */
+        } else {
+                ret = unicast_send_skb(skb, bat_priv);
+                if (ret != 0)
+                        goto dropped_freed;
+        }
+
+        bat_priv->stats.tx_packets++;
+        bat_priv->stats.tx_bytes += data_len;
+        goto end;
+
+dropped:
+        kfree_skb(skb);
+dropped_freed:
+        bat_priv->stats.tx_dropped++;
+end:
+        return NETDEV_TX_OK;
+}
+
+void interface_rx(struct net_device *soft_iface,
+                  struct sk_buff *skb, struct batman_if *recv_if,
+                  int hdr_size)
+{
+        struct bat_priv *bat_priv = netdev_priv(soft_iface);
+        struct unicast_packet *unicast_packet;
+        struct ethhdr *ethhdr;
+        struct vlan_ethhdr *vhdr;
+        short vid = -1;
+        int ret;
+
+        /* check if enough space is available for pulling, and pull */
+        if (!pskb_may_pull(skb, hdr_size))
+                goto dropped;
+
+        skb_pull_rcsum(skb, hdr_size);
+        skb_reset_mac_header(skb);
+
+        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+
+        switch (ntohs(ethhdr->h_proto)) {
+        case ETH_P_8021Q:
+                vhdr = (struct vlan_ethhdr *)skb->data;
+                vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
+
+                if (ntohs(vhdr->h_vlan_encapsulated_proto) != ETH_P_BATMAN)
+                        break;
+
+                /* fall through */
+        case ETH_P_BATMAN:
+                goto dropped;
+        }
+
+        /**
+         * if we have a another chosen mesh exit node in range
+         * it will transport the packets to the non-mesh network
+         */
+        if ((bat_priv->softif_neigh) && (bat_priv->softif_neigh->vid == vid)) {
+                skb_push(skb, hdr_size);
+                unicast_packet = (struct unicast_packet *)skb->data;
+
+                if ((unicast_packet->packet_type != BAT_UNICAST) &&
+                    (unicast_packet->packet_type != BAT_UNICAST_FRAG))
+                        goto dropped;
+
+                skb_reset_mac_header(skb);
+
+                memcpy(unicast_packet->dest,
+                       bat_priv->softif_neigh->addr, ETH_ALEN);
+                ret = route_unicast_packet(skb, recv_if, hdr_size);
+                if (ret == NET_RX_DROP)
+                        goto dropped;
+
+                goto out;
+        }
+
+        /* skb->dev & skb->pkt_type are set here */
+        if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
+                goto dropped;
+        skb->protocol = eth_type_trans(skb, soft_iface);
+
+        /* should not be neccesary anymore as we use skb_pull_rcsum()
+         * TODO: please verify this and remove this TODO
+         * -- Dec 21st 2009, Simon Wunderlich */
+
+/*      skb->ip_summed = CHECKSUM_UNNECESSARY;*/
+
+        bat_priv->stats.rx_packets++;
+        bat_priv->stats.rx_bytes += skb->len + sizeof(struct ethhdr);
+
+        soft_iface->last_rx = jiffies;
+
+        netif_rx(skb);
+        return;
+
+dropped:
+        kfree_skb(skb);
+out:
+        return;
+}
+
+#ifdef HAVE_NET_DEVICE_OPS
+static const struct net_device_ops bat_netdev_ops = {
+        .ndo_open = interface_open,
+        .ndo_stop = interface_release,
+        .ndo_get_stats = interface_stats,
+        .ndo_set_mac_address = interface_set_mac_addr,
+        .ndo_change_mtu = interface_change_mtu,
+        .ndo_start_xmit = interface_tx,
+        .ndo_validate_addr = eth_validate_addr
+};
+#endif
+
+static void interface_setup(struct net_device *dev)
+{
+        struct bat_priv *priv = netdev_priv(dev);
+        char dev_addr[ETH_ALEN];
+
+        ether_setup(dev);
+
+#ifdef HAVE_NET_DEVICE_OPS
+        dev->netdev_ops = &bat_netdev_ops;
+#else
+        dev->open = interface_open;
+        dev->stop = interface_release;
+        dev->get_stats = interface_stats;
+        dev->set_mac_address = interface_set_mac_addr;
+        dev->change_mtu = interface_change_mtu;
+        dev->hard_start_xmit = interface_tx;
+#endif
+        dev->destructor = free_netdev;
+
+        /**
+         * can't call min_mtu, because the needed variables
+         * have not been initialized yet
+         */
+        dev->mtu = ETH_DATA_LEN;
+        dev->hard_header_len = BAT_HEADER_LEN; /* reserve more space in the
+                                                * skbuff for our header */
+
+        /* generate random address */
+        random_ether_addr(dev_addr);
+        memcpy(dev->dev_addr, dev_addr, ETH_ALEN);
+
+        SET_ETHTOOL_OPS(dev, &bat_ethtool_ops);
+
+        memset(priv, 0, sizeof(struct bat_priv));
+}
+
+struct net_device *softif_create(char *name)
+{
+        struct net_device *soft_iface;
+        struct bat_priv *bat_priv;
+        int ret;
+
+        soft_iface = alloc_netdev(sizeof(struct bat_priv) , name,
+                                   interface_setup);
+
+        if (!soft_iface) {
+                pr_err("Unable to allocate the batman interface: %s\n", name);
+                goto out;
+        }
+
+        ret = register_netdev(soft_iface);
+        if (ret < 0) {
+                pr_err("Unable to register the batman interface '%s': %i\n",
+                       name, ret);
+                goto free_soft_iface;
+        }
+
+        bat_priv = netdev_priv(soft_iface);
+
+        atomic_set(&bat_priv->aggregated_ogms, 1);
+        atomic_set(&bat_priv->bonding, 0);
+        atomic_set(&bat_priv->vis_mode, VIS_TYPE_CLIENT_UPDATE);
+        atomic_set(&bat_priv->gw_mode, GW_MODE_OFF);
+        atomic_set(&bat_priv->gw_sel_class, 20);
+        atomic_set(&bat_priv->gw_bandwidth, 41);
+        atomic_set(&bat_priv->orig_interval, 1000);
+        atomic_set(&bat_priv->hop_penalty, 10);
+        atomic_set(&bat_priv->log_level, 0);
+        atomic_set(&bat_priv->fragmentation, 1);
+        atomic_set(&bat_priv->bcast_queue_left, BCAST_QUEUE_LEN);
+        atomic_set(&bat_priv->batman_queue_left, BATMAN_QUEUE_LEN);
+
+        atomic_set(&bat_priv->mesh_state, MESH_INACTIVE);
+        atomic_set(&bat_priv->bcast_seqno, 1);
+        atomic_set(&bat_priv->hna_local_changed, 0);
+
+        bat_priv->primary_if = NULL;
+        bat_priv->num_ifaces = 0;
+        bat_priv->softif_neigh = NULL;
+
+        ret = sysfs_add_meshif(soft_iface);
+        if (ret < 0)
+                goto unreg_soft_iface;
+
+        ret = debugfs_add_meshif(soft_iface);
+        if (ret < 0)
+                goto unreg_sysfs;
+
+        ret = mesh_init(soft_iface);
+        if (ret < 0)
+                goto unreg_debugfs;
+
+        return soft_iface;
+
+unreg_debugfs:
+        debugfs_del_meshif(soft_iface);
+unreg_sysfs:
+        sysfs_del_meshif(soft_iface);
+unreg_soft_iface:
+        unregister_netdev(soft_iface);
+        return NULL;
+
+free_soft_iface:
+        free_netdev(soft_iface);
+out:
+        return NULL;
+}
+
+void softif_destroy(struct net_device *soft_iface)
+{
+        debugfs_del_meshif(soft_iface);
+        sysfs_del_meshif(soft_iface);
+        mesh_free(soft_iface);
+        unregister_netdevice(soft_iface);
+}
+
+/* ethtool */
+static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+        cmd->supported = 0;
+        cmd->advertising = 0;
+        cmd->speed = SPEED_10;
+        cmd->duplex = DUPLEX_FULL;
+        cmd->port = PORT_TP;
+        cmd->phy_address = 0;
+        cmd->transceiver = XCVR_INTERNAL;
+        cmd->autoneg = AUTONEG_DISABLE;
+        cmd->maxtxpkt = 0;
+        cmd->maxrxpkt = 0;
+
+        return 0;
+}
+
+static void bat_get_drvinfo(struct net_device *dev,
+                            struct ethtool_drvinfo *info)
+{
+        strcpy(info->driver, "B.A.T.M.A.N. advanced");
+        strcpy(info->version, SOURCE_VERSION);
+        strcpy(info->fw_version, "N/A");
+        strcpy(info->bus_info, "batman");
+}
+
+static u32 bat_get_msglevel(struct net_device *dev)
+{
+        return -EOPNOTSUPP;
+}
+
+static void bat_set_msglevel(struct net_device *dev, u32 value)
+{
+}
+
+static u32 bat_get_link(struct net_device *dev)
+{
+        return 1;
+}
+
+static u32 bat_get_rx_csum(struct net_device *dev)
+{
+        return 0;
+}
+
+static int bat_set_rx_csum(struct net_device *dev, u32 data)
+{
+        return -EOPNOTSUPP;
+}
diff --git a/net/batman-adv/soft-interface.h b/net/batman-adv/soft-interface.h
new file mode 100644
index 000000000000..02b77334d10d
--- /dev/null
+++ b/net/batman-adv/soft-interface.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_SOFT_INTERFACE_H_
+#define _NET_BATMAN_ADV_SOFT_INTERFACE_H_
+
+int my_skb_head_push(struct sk_buff *skb, unsigned int len);
+int softif_neigh_seq_print_text(struct seq_file *seq, void *offset);
+void softif_neigh_purge(struct bat_priv *bat_priv);
+int interface_tx(struct sk_buff *skb, struct net_device *soft_iface);
+void interface_rx(struct net_device *soft_iface,
+                  struct sk_buff *skb, struct batman_if *recv_if,
+                  int hdr_size);
+struct net_device *softif_create(char *name);
+void softif_destroy(struct net_device *soft_iface);
+
+#endif /* _NET_BATMAN_ADV_SOFT_INTERFACE_H_ */
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
new file mode 100644
index 000000000000..a19e16c94da5
--- /dev/null
+++ b/net/batman-adv/translation-table.c
@@ -0,0 +1,534 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "translation-table.h"
+#include "soft-interface.h"
+#include "types.h"
+#include "hash.h"
+#include "originator.h"
+
+static void hna_local_purge(struct work_struct *work);
+static void _hna_global_del_orig(struct bat_priv *bat_priv,
+                                 struct hna_global_entry *hna_global_entry,
+                                 char *message);
+
+static void hna_local_start_timer(struct bat_priv *bat_priv)
+{
+        INIT_DELAYED_WORK(&bat_priv->hna_work, hna_local_purge);
+        queue_delayed_work(bat_event_workqueue, &bat_priv->hna_work, 10 * HZ);
+}
+
+int hna_local_init(struct bat_priv *bat_priv)
+{
+        if (bat_priv->hna_local_hash)
+                return 1;
+
+        bat_priv->hna_local_hash = hash_new(1024);
+
+        if (!bat_priv->hna_local_hash)
+                return 0;
+
+        atomic_set(&bat_priv->hna_local_changed, 0);
+        hna_local_start_timer(bat_priv);
+
+        return 1;
+}
+
+void hna_local_add(struct net_device *soft_iface, uint8_t *addr)
+{
+        struct bat_priv *bat_priv = netdev_priv(soft_iface);
+        struct hna_local_entry *hna_local_entry;
+        struct hna_global_entry *hna_global_entry;
+        int required_bytes;
+
+        spin_lock_bh(&bat_priv->hna_lhash_lock);
+        hna_local_entry =
+                ((struct hna_local_entry *)hash_find(bat_priv->hna_local_hash,
+                                                     compare_orig, choose_orig,
+                                                     addr));
+        spin_unlock_bh(&bat_priv->hna_lhash_lock);
+
+        if (hna_local_entry) {
+                hna_local_entry->last_seen = jiffies;
+                return;
+        }
+
+        /* only announce as many hosts as possible in the batman-packet and
+           space in batman_packet->num_hna That also should give a limit to
+           MAC-flooding. */
+        required_bytes = (bat_priv->num_local_hna + 1) * ETH_ALEN;
+        required_bytes += BAT_PACKET_LEN;
+
+        if ((required_bytes > ETH_DATA_LEN) ||
+            (atomic_read(&bat_priv->aggregated_ogms) &&
+             required_bytes > MAX_AGGREGATION_BYTES) ||
+            (bat_priv->num_local_hna + 1 > 255)) {
+                bat_dbg(DBG_ROUTES, bat_priv,
+                        "Can't add new local hna entry (%pM): "
+                        "number of local hna entries exceeds packet size\n",
+                        addr);
+                return;
+        }
+
+        bat_dbg(DBG_ROUTES, bat_priv,
+                "Creating new local hna entry: %pM\n", addr);
+
+        hna_local_entry = kmalloc(sizeof(struct hna_local_entry), GFP_ATOMIC);
+        if (!hna_local_entry)
+                return;
+
+        memcpy(hna_local_entry->addr, addr, ETH_ALEN);
+        hna_local_entry->last_seen = jiffies;
+
+        /* the batman interface mac address should never be purged */
+        if (compare_orig(addr, soft_iface->dev_addr))
+                hna_local_entry->never_purge = 1;
+        else
+                hna_local_entry->never_purge = 0;
+
+        spin_lock_bh(&bat_priv->hna_lhash_lock);
+
+        hash_add(bat_priv->hna_local_hash, compare_orig, choose_orig,
+                 hna_local_entry);
+        bat_priv->num_local_hna++;
+        atomic_set(&bat_priv->hna_local_changed, 1);
+
+        spin_unlock_bh(&bat_priv->hna_lhash_lock);
+
+        /* remove address from global hash if present */
+        spin_lock_bh(&bat_priv->hna_ghash_lock);
+
+        hna_global_entry = ((struct hna_global_entry *)
+                                hash_find(bat_priv->hna_global_hash,
+                                          compare_orig, choose_orig, addr));
+
+        if (hna_global_entry)
+                _hna_global_del_orig(bat_priv, hna_global_entry,
+                                     "local hna received");
+
+        spin_unlock_bh(&bat_priv->hna_ghash_lock);
+}
+
+int hna_local_fill_buffer(struct bat_priv *bat_priv,
+                          unsigned char *buff, int buff_len)
+{
+        struct hashtable_t *hash = bat_priv->hna_local_hash;
+        struct hna_local_entry *hna_local_entry;
+        struct element_t *bucket;
+        int i;
+        struct hlist_node *walk;
+        struct hlist_head *head;
+        int count = 0;
+
+        spin_lock_bh(&bat_priv->hna_lhash_lock);
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry(bucket, walk, head, hlist) {
+
+                        if (buff_len < (count + 1) * ETH_ALEN)
+                                break;
+
+                        hna_local_entry = bucket->data;
+                        memcpy(buff + (count * ETH_ALEN), hna_local_entry->addr,
+                               ETH_ALEN);
+
+                        count++;
+                }
+        }
+
+        /* if we did not get all new local hnas see you next time  ;-) */
+        if (count == bat_priv->num_local_hna)
+                atomic_set(&bat_priv->hna_local_changed, 0);
+
+        spin_unlock_bh(&bat_priv->hna_lhash_lock);
+        return i;
+}
+
+int hna_local_seq_print_text(struct seq_file *seq, void *offset)
+{
+        struct net_device *net_dev = (struct net_device *)seq->private;
+        struct bat_priv *bat_priv = netdev_priv(net_dev);
+        struct hashtable_t *hash = bat_priv->hna_local_hash;
+        struct hna_local_entry *hna_local_entry;
+        int i;
+        struct hlist_node *walk;
+        struct hlist_head *head;
+        struct element_t *bucket;
+        size_t buf_size, pos;
+        char *buff;
+
+        if (!bat_priv->primary_if) {
+                return seq_printf(seq, "BATMAN mesh %s disabled - "
+                               "please specify interfaces to enable it\n",
+                               net_dev->name);
+        }
+
+        seq_printf(seq, "Locally retrieved addresses (from %s) "
+                   "announced via HNA:\n",
+                   net_dev->name);
+
+        spin_lock_bh(&bat_priv->hna_lhash_lock);
+
+        buf_size = 1;
+        /* Estimate length for: " * xx:xx:xx:xx:xx:xx\n" */
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each(walk, head)
+                        buf_size += 21;
+        }
+
+        buff = kmalloc(buf_size, GFP_ATOMIC);
+        if (!buff) {
+                spin_unlock_bh(&bat_priv->hna_lhash_lock);
+                return -ENOMEM;
+        }
+        buff[0] = '\0';
+        pos = 0;
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry(bucket, walk, head, hlist) {
+                        hna_local_entry = bucket->data;
+
+                        pos += snprintf(buff + pos, 22, " * %pM\n",
+                                        hna_local_entry->addr);
+                }
+        }
+
+        spin_unlock_bh(&bat_priv->hna_lhash_lock);
+
+        seq_printf(seq, "%s", buff);
+        kfree(buff);
+        return 0;
+}
+
+static void _hna_local_del(void *data, void *arg)
+{
+        struct bat_priv *bat_priv = (struct bat_priv *)arg;
+
+        kfree(data);
+        bat_priv->num_local_hna--;
+        atomic_set(&bat_priv->hna_local_changed, 1);
+}
+
+static void hna_local_del(struct bat_priv *bat_priv,
+                          struct hna_local_entry *hna_local_entry,
+                          char *message)
+{
+        bat_dbg(DBG_ROUTES, bat_priv, "Deleting local hna entry (%pM): %s\n",
+                hna_local_entry->addr, message);
+
+        hash_remove(bat_priv->hna_local_hash, compare_orig, choose_orig,
+                    hna_local_entry->addr);
+        _hna_local_del(hna_local_entry, bat_priv);
+}
+
+void hna_local_remove(struct bat_priv *bat_priv,
+                      uint8_t *addr, char *message)
+{
+        struct hna_local_entry *hna_local_entry;
+
+        spin_lock_bh(&bat_priv->hna_lhash_lock);
+
+        hna_local_entry = (struct hna_local_entry *)
+                hash_find(bat_priv->hna_local_hash, compare_orig, choose_orig,
+                          addr);
+
+        if (hna_local_entry)
+                hna_local_del(bat_priv, hna_local_entry, message);
+
+        spin_unlock_bh(&bat_priv->hna_lhash_lock);
+}
+
+static void hna_local_purge(struct work_struct *work)
+{
+        struct delayed_work *delayed_work =
+                container_of(work, struct delayed_work, work);
+        struct bat_priv *bat_priv =
+                container_of(delayed_work, struct bat_priv, hna_work);
+        struct hashtable_t *hash = bat_priv->hna_local_hash;
+        struct hna_local_entry *hna_local_entry;
+        int i;
+        struct hlist_node *walk, *safe;
+        struct hlist_head *head;
+        struct element_t *bucket;
+        unsigned long timeout;
+
+        spin_lock_bh(&bat_priv->hna_lhash_lock);
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry_safe(bucket, walk, safe, head, hlist) {
+                        hna_local_entry = bucket->data;
+
+                        timeout = hna_local_entry->last_seen;
+                        timeout += LOCAL_HNA_TIMEOUT * HZ;
+
+                        if ((!hna_local_entry->never_purge) &&
+                            time_after(jiffies, timeout))
+                                hna_local_del(bat_priv, hna_local_entry,
+                                        "address timed out");
+                }
+        }
+
+        spin_unlock_bh(&bat_priv->hna_lhash_lock);
+        hna_local_start_timer(bat_priv);
+}
+
+void hna_local_free(struct bat_priv *bat_priv)
+{
+        if (!bat_priv->hna_local_hash)
+                return;
+
+        cancel_delayed_work_sync(&bat_priv->hna_work);
+        hash_delete(bat_priv->hna_local_hash, _hna_local_del, bat_priv);
+        bat_priv->hna_local_hash = NULL;
+}
+
+int hna_global_init(struct bat_priv *bat_priv)
+{
+        if (bat_priv->hna_global_hash)
+                return 1;
+
+        bat_priv->hna_global_hash = hash_new(1024);
+
+        if (!bat_priv->hna_global_hash)
+                return 0;
+
+        return 1;
+}
+
+void hna_global_add_orig(struct bat_priv *bat_priv,
+                         struct orig_node *orig_node,
+                         unsigned char *hna_buff, int hna_buff_len)
+{
+        struct hna_global_entry *hna_global_entry;
+        struct hna_local_entry *hna_local_entry;
+        int hna_buff_count = 0;
+        unsigned char *hna_ptr;
+
+        while ((hna_buff_count + 1) * ETH_ALEN <= hna_buff_len) {
+                spin_lock_bh(&bat_priv->hna_ghash_lock);
+
+                hna_ptr = hna_buff + (hna_buff_count * ETH_ALEN);
+                hna_global_entry = (struct hna_global_entry *)
+                        hash_find(bat_priv->hna_global_hash, compare_orig,
+                                  choose_orig, hna_ptr);
+
+                if (!hna_global_entry) {
+                        spin_unlock_bh(&bat_priv->hna_ghash_lock);
+
+                        hna_global_entry =
+                                kmalloc(sizeof(struct hna_global_entry),
+                                        GFP_ATOMIC);
+
+                        if (!hna_global_entry)
+                                break;
+
+                        memcpy(hna_global_entry->addr, hna_ptr, ETH_ALEN);
+
+                        bat_dbg(DBG_ROUTES, bat_priv,
+                                "Creating new global hna entry: "
+                                "%pM (via %pM)\n",
+                                hna_global_entry->addr, orig_node->orig);
+
+                        spin_lock_bh(&bat_priv->hna_ghash_lock);
+                        hash_add(bat_priv->hna_global_hash, compare_orig,
+                                 choose_orig, hna_global_entry);
+
+                }
+
+                hna_global_entry->orig_node = orig_node;
+                spin_unlock_bh(&bat_priv->hna_ghash_lock);
+
+                /* remove address from local hash if present */
+                spin_lock_bh(&bat_priv->hna_lhash_lock);
+
+                hna_ptr = hna_buff + (hna_buff_count * ETH_ALEN);
+                hna_local_entry = (struct hna_local_entry *)
+                        hash_find(bat_priv->hna_local_hash, compare_orig,
+                                  choose_orig, hna_ptr);
+
+                if (hna_local_entry)
+                        hna_local_del(bat_priv, hna_local_entry,
+                                      "global hna received");
+
+                spin_unlock_bh(&bat_priv->hna_lhash_lock);
+
+                hna_buff_count++;
+        }
+
+        /* initialize, and overwrite if malloc succeeds */
+        orig_node->hna_buff = NULL;
+        orig_node->hna_buff_len = 0;
+
+        if (hna_buff_len > 0) {
+                orig_node->hna_buff = kmalloc(hna_buff_len, GFP_ATOMIC);
+                if (orig_node->hna_buff) {
+                        memcpy(orig_node->hna_buff, hna_buff, hna_buff_len);
+                        orig_node->hna_buff_len = hna_buff_len;
+                }
+        }
+}
+
+int hna_global_seq_print_text(struct seq_file *seq, void *offset)
+{
+        struct net_device *net_dev = (struct net_device *)seq->private;
+        struct bat_priv *bat_priv = netdev_priv(net_dev);
+        struct hashtable_t *hash = bat_priv->hna_global_hash;
+        struct hna_global_entry *hna_global_entry;
+        int i;
+        struct hlist_node *walk;
+        struct hlist_head *head;
+        struct element_t *bucket;
+        size_t buf_size, pos;
+        char *buff;
+
+        if (!bat_priv->primary_if) {
+                return seq_printf(seq, "BATMAN mesh %s disabled - "
+                                  "please specify interfaces to enable it\n",
+                                  net_dev->name);
+        }
+
+        seq_printf(seq, "Globally announced HNAs received via the mesh %s\n",
+                   net_dev->name);
+
+        spin_lock_bh(&bat_priv->hna_ghash_lock);
+
+        buf_size = 1;
+        /* Estimate length for: " * xx:xx:xx:xx:xx:xx via xx:xx:xx:xx:xx:xx\n"*/
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each(walk, head)
+                        buf_size += 43;
+        }
+
+        buff = kmalloc(buf_size, GFP_ATOMIC);
+        if (!buff) {
+                spin_unlock_bh(&bat_priv->hna_ghash_lock);
+                return -ENOMEM;
+        }
+        buff[0] = '\0';
+        pos = 0;
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry(bucket, walk, head, hlist) {
+                        hna_global_entry = bucket->data;
+
+                        pos += snprintf(buff + pos, 44,
+                                        " * %pM via %pM\n",
+                                        hna_global_entry->addr,
+                                        hna_global_entry->orig_node->orig);
+                }
+        }
+
+        spin_unlock_bh(&bat_priv->hna_ghash_lock);
+
+        seq_printf(seq, "%s", buff);
+        kfree(buff);
+        return 0;
+}
+
+static void _hna_global_del_orig(struct bat_priv *bat_priv,
+                                 struct hna_global_entry *hna_global_entry,
+                                 char *message)
+{
+        bat_dbg(DBG_ROUTES, bat_priv,
+                "Deleting global hna entry %pM (via %pM): %s\n",
+                hna_global_entry->addr, hna_global_entry->orig_node->orig,
+                message);
+
+        hash_remove(bat_priv->hna_global_hash, compare_orig, choose_orig,
+                    hna_global_entry->addr);
+        kfree(hna_global_entry);
+}
+
+void hna_global_del_orig(struct bat_priv *bat_priv,
+                         struct orig_node *orig_node, char *message)
+{
+        struct hna_global_entry *hna_global_entry;
+        int hna_buff_count = 0;
+        unsigned char *hna_ptr;
+
+        if (orig_node->hna_buff_len == 0)
+                return;
+
+        spin_lock_bh(&bat_priv->hna_ghash_lock);
+
+        while ((hna_buff_count + 1) * ETH_ALEN <= orig_node->hna_buff_len) {
+                hna_ptr = orig_node->hna_buff + (hna_buff_count * ETH_ALEN);
+                hna_global_entry = (struct hna_global_entry *)
+                        hash_find(bat_priv->hna_global_hash, compare_orig,
+                                  choose_orig, hna_ptr);
+
+                if ((hna_global_entry) &&
+                    (hna_global_entry->orig_node == orig_node))
+                        _hna_global_del_orig(bat_priv, hna_global_entry,
+                                             message);
+
+                hna_buff_count++;
+        }
+
+        spin_unlock_bh(&bat_priv->hna_ghash_lock);
+
+        orig_node->hna_buff_len = 0;
+        kfree(orig_node->hna_buff);
+        orig_node->hna_buff = NULL;
+}
+
+static void hna_global_del(void *data, void *arg)
+{
+        kfree(data);
+}
+
+void hna_global_free(struct bat_priv *bat_priv)
+{
+        if (!bat_priv->hna_global_hash)
+                return;
+
+        hash_delete(bat_priv->hna_global_hash, hna_global_del, NULL);
+        bat_priv->hna_global_hash = NULL;
+}
+
+struct orig_node *transtable_search(struct bat_priv *bat_priv, uint8_t *addr)
+{
+        struct hna_global_entry *hna_global_entry;
+
+        spin_lock_bh(&bat_priv->hna_ghash_lock);
+        hna_global_entry = (struct hna_global_entry *)
+                                hash_find(bat_priv->hna_global_hash,
+                                          compare_orig, choose_orig, addr);
+        spin_unlock_bh(&bat_priv->hna_ghash_lock);
+
+        if (!hna_global_entry)
+                return NULL;
+
+        return hna_global_entry->orig_node;
+}
diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h
new file mode 100644
index 000000000000..10c4c5c319b6
--- /dev/null
+++ b/net/batman-adv/translation-table.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_TRANSLATION_TABLE_H_
+#define _NET_BATMAN_ADV_TRANSLATION_TABLE_H_
+
+#include "types.h"
+
+int hna_local_init(struct bat_priv *bat_priv);
+void hna_local_add(struct net_device *soft_iface, uint8_t *addr);
+void hna_local_remove(struct bat_priv *bat_priv,
+                      uint8_t *addr, char *message);
+int hna_local_fill_buffer(struct bat_priv *bat_priv,
+                          unsigned char *buff, int buff_len);
+int hna_local_seq_print_text(struct seq_file *seq, void *offset);
+void hna_local_free(struct bat_priv *bat_priv);
+int hna_global_init(struct bat_priv *bat_priv);
+void hna_global_add_orig(struct bat_priv *bat_priv,
+                         struct orig_node *orig_node,
+                         unsigned char *hna_buff, int hna_buff_len);
+int hna_global_seq_print_text(struct seq_file *seq, void *offset);
+void hna_global_del_orig(struct bat_priv *bat_priv,
+                         struct orig_node *orig_node, char *message);
+void hna_global_free(struct bat_priv *bat_priv);
+struct orig_node *transtable_search(struct bat_priv *bat_priv, uint8_t *addr);
+
+#endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
new file mode 100644
index 000000000000..97cb23dd3e69
--- /dev/null
+++ b/net/batman-adv/types.h
@@ -0,0 +1,271 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+
+
+#ifndef _NET_BATMAN_ADV_TYPES_H_
+#define _NET_BATMAN_ADV_TYPES_H_
+
+#include "packet.h"
+#include "bitarray.h"
+
+#define BAT_HEADER_LEN (sizeof(struct ethhdr) + \
+        ((sizeof(struct unicast_packet) > sizeof(struct bcast_packet) ? \
+         sizeof(struct unicast_packet) : \
+         sizeof(struct bcast_packet))))
+
+
+struct batman_if {
+        struct list_head list;
+        int16_t if_num;
+        char if_status;
+        struct net_device *net_dev;
+        atomic_t seqno;
+        atomic_t frag_seqno;
+        unsigned char *packet_buff;
+        int packet_len;
+        struct kobject *hardif_obj;
+        struct kref refcount;
+        struct packet_type batman_adv_ptype;
+        struct net_device *soft_iface;
+        struct rcu_head rcu;
+};
+
+/**
+ *      orig_node - structure for orig_list maintaining nodes of mesh
+ *      @primary_addr: hosts primary interface address
+ *      @last_valid: when last packet from this node was received
+ *      @bcast_seqno_reset: time when the broadcast seqno window was reset
+ *      @batman_seqno_reset: time when the batman seqno window was reset
+ *      @gw_flags: flags related to gateway class
+ *      @flags: for now only VIS_SERVER flag
+ *      @last_real_seqno: last and best known squence number
+ *      @last_ttl: ttl of last received packet
+ *      @last_bcast_seqno: last broadcast sequence number received by this host
+ *
+ *      @candidates: how many candidates are available
+ *      @selected: next bonding candidate
+ */
+struct orig_node {
+        uint8_t orig[ETH_ALEN];
+        uint8_t primary_addr[ETH_ALEN];
+        struct neigh_node *router;
+        unsigned long *bcast_own;
+        uint8_t *bcast_own_sum;
+        uint8_t tq_own;
+        int tq_asym_penalty;
+        unsigned long last_valid;
+        unsigned long bcast_seqno_reset;
+        unsigned long batman_seqno_reset;
+        uint8_t gw_flags;
+        uint8_t flags;
+        unsigned char *hna_buff;
+        int16_t hna_buff_len;
+        uint32_t last_real_seqno;
+        uint8_t last_ttl;
+        unsigned long bcast_bits[NUM_WORDS];
+        uint32_t last_bcast_seqno;
+        struct list_head neigh_list;
+        struct list_head frag_list;
+        unsigned long last_frag_packet;
+        struct {
+                uint8_t candidates;
+                struct neigh_node *selected;
+        } bond;
+};
+
+struct gw_node {
+        struct hlist_node list;
+        struct orig_node *orig_node;
+        unsigned long deleted;
+        struct kref refcount;
+        struct rcu_head rcu;
+};
+
+/**
+ *      neigh_node
+ *      @last_valid: when last packet via this neighbor was received
+ */
+struct neigh_node {
+        struct list_head list;
+        uint8_t addr[ETH_ALEN];
+        uint8_t real_packet_count;
+        uint8_t tq_recv[TQ_GLOBAL_WINDOW_SIZE];
+        uint8_t tq_index;
+        uint8_t tq_avg;
+        uint8_t last_ttl;
+        struct neigh_node *next_bond_candidate;
+        unsigned long last_valid;
+        unsigned long real_bits[NUM_WORDS];
+        struct orig_node *orig_node;
+        struct batman_if *if_incoming;
+};
+
+
+struct bat_priv {
+        atomic_t mesh_state;
+        struct net_device_stats stats;
+        atomic_t aggregated_ogms;       /* boolean */
+        atomic_t bonding;               /* boolean */
+        atomic_t fragmentation;         /* boolean */
+        atomic_t vis_mode;              /* VIS_TYPE_* */
+        atomic_t gw_mode;               /* GW_MODE_* */
+        atomic_t gw_sel_class;          /* uint */
+        atomic_t gw_bandwidth;          /* gw bandwidth */
+        atomic_t orig_interval;         /* uint */
+        atomic_t hop_penalty;           /* uint */
+        atomic_t log_level;             /* uint */
+        atomic_t bcast_seqno;
+        atomic_t bcast_queue_left;
+        atomic_t batman_queue_left;
+        char num_ifaces;
+        struct hlist_head softif_neigh_list;
+        struct softif_neigh *softif_neigh;
+        struct debug_log *debug_log;
+        struct batman_if *primary_if;
+        struct kobject *mesh_obj;
+        struct dentry *debug_dir;
+        struct hlist_head forw_bat_list;
+        struct hlist_head forw_bcast_list;
+        struct hlist_head gw_list;
+        struct list_head vis_send_list;
+        struct hashtable_t *orig_hash;
+        struct hashtable_t *hna_local_hash;
+        struct hashtable_t *hna_global_hash;
+        struct hashtable_t *vis_hash;
+        spinlock_t orig_hash_lock; /* protects orig_hash */
+        spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
+        spinlock_t forw_bcast_list_lock; /* protects  */
+        spinlock_t hna_lhash_lock; /* protects hna_local_hash */
+        spinlock_t hna_ghash_lock; /* protects hna_global_hash */
+        spinlock_t gw_list_lock; /* protects gw_list */
+        spinlock_t vis_hash_lock; /* protects vis_hash */
+        spinlock_t vis_list_lock; /* protects vis_info::recv_list */
+        spinlock_t softif_neigh_lock; /* protects soft-interface neigh list */
+        int16_t num_local_hna;
+        atomic_t hna_local_changed;
+        struct delayed_work hna_work;
+        struct delayed_work orig_work;
+        struct delayed_work vis_work;
+        struct gw_node *curr_gw;
+        struct vis_info *my_vis_info;
+};
+
+struct socket_client {
+        struct list_head queue_list;
+        unsigned int queue_len;
+        unsigned char index;
+        spinlock_t lock; /* protects queue_list, queue_len, index */
+        wait_queue_head_t queue_wait;
+        struct bat_priv *bat_priv;
+};
+
+struct socket_packet {
+        struct list_head list;
+        size_t icmp_len;
+        struct icmp_packet_rr icmp_packet;
+};
+
+struct hna_local_entry {
+        uint8_t addr[ETH_ALEN];
+        unsigned long last_seen;
+        char never_purge;
+};
+
+struct hna_global_entry {
+        uint8_t addr[ETH_ALEN];
+        struct orig_node *orig_node;
+};
+
+/**
+ *      forw_packet - structure for forw_list maintaining packets to be
+ *                    send/forwarded
+ */
+struct forw_packet {
+        struct hlist_node list;
+        unsigned long send_time;
+        uint8_t own;
+        struct sk_buff *skb;
+        uint16_t packet_len;
+        uint32_t direct_link_flags;
+        uint8_t num_packets;
+        struct delayed_work delayed_work;
+        struct batman_if *if_incoming;
+};
+
+/* While scanning for vis-entries of a particular vis-originator
+ * this list collects its interfaces to create a subgraph/cluster
+ * out of them later
+ */
+struct if_list_entry {
+        uint8_t addr[ETH_ALEN];
+        bool primary;
+        struct hlist_node list;
+};
+
+struct debug_log {
+        char log_buff[LOG_BUF_LEN];
+        unsigned long log_start;
+        unsigned long log_end;
+        spinlock_t lock; /* protects log_buff, log_start and log_end */
+        wait_queue_head_t queue_wait;
+};
+
+struct frag_packet_list_entry {
+        struct list_head list;
+        uint16_t seqno;
+        struct sk_buff *skb;
+};
+
+struct vis_info {
+        unsigned long       first_seen;
+        struct list_head    recv_list;
+                            /* list of server-neighbors we received a vis-packet
+                             * from.  we should not reply to them. */
+        struct list_head send_list;
+        struct kref refcount;
+        struct bat_priv *bat_priv;
+        /* this packet might be part of the vis send queue. */
+        struct sk_buff *skb_packet;
+        /* vis_info may follow here*/
+} __attribute__((packed));
+
+struct vis_info_entry {
+        uint8_t  src[ETH_ALEN];
+        uint8_t  dest[ETH_ALEN];
+        uint8_t  quality;       /* quality = 0 means HNA */
+} __attribute__((packed));
+
+struct recvlist_node {
+        struct list_head list;
+        uint8_t mac[ETH_ALEN];
+};
+
+struct softif_neigh {
+        struct hlist_node list;
+        uint8_t addr[ETH_ALEN];
+        unsigned long last_seen;
+        short vid;
+        struct kref refcount;
+        struct rcu_head rcu;
+};
+
+#endif /* _NET_BATMAN_ADV_TYPES_H_ */
diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c
new file mode 100644
index 000000000000..dc2e28bed844
--- /dev/null
+++ b/net/batman-adv/unicast.c
@@ -0,0 +1,343 @@
+/*
+ * Copyright (C) 2010 B.A.T.M.A.N. contributors:
+ *
+ * Andreas Langer
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "unicast.h"
+#include "send.h"
+#include "soft-interface.h"
+#include "gateway_client.h"
+#include "originator.h"
+#include "hash.h"
+#include "translation-table.h"
+#include "routing.h"
+#include "hard-interface.h"
+
+
+static struct sk_buff *frag_merge_packet(struct list_head *head,
+                                         struct frag_packet_list_entry *tfp,
+                                         struct sk_buff *skb)
+{
+        struct unicast_frag_packet *up =
+                (struct unicast_frag_packet *)skb->data;
+        struct sk_buff *tmp_skb;
+        struct unicast_packet *unicast_packet;
+        int hdr_len = sizeof(struct unicast_packet),
+            uni_diff = sizeof(struct unicast_frag_packet) - hdr_len;
+
+        /* set skb to the first part and tmp_skb to the second part */
+        if (up->flags & UNI_FRAG_HEAD) {
+                tmp_skb = tfp->skb;
+        } else {
+                tmp_skb = skb;
+                skb = tfp->skb;
+        }
+
+        skb_pull(tmp_skb, sizeof(struct unicast_frag_packet));
+        if (pskb_expand_head(skb, 0, tmp_skb->len, GFP_ATOMIC) < 0) {
+                /* free buffered skb, skb will be freed later */
+                kfree_skb(tfp->skb);
+                return NULL;
+        }
+
+        /* move free entry to end */
+        tfp->skb = NULL;
+        tfp->seqno = 0;
+        list_move_tail(&tfp->list, head);
+
+        memcpy(skb_put(skb, tmp_skb->len), tmp_skb->data, tmp_skb->len);
+        kfree_skb(tmp_skb);
+
+        memmove(skb->data + uni_diff, skb->data, hdr_len);
+        unicast_packet = (struct unicast_packet *) skb_pull(skb, uni_diff);
+        unicast_packet->packet_type = BAT_UNICAST;
+
+        return skb;
+}
+
+static void frag_create_entry(struct list_head *head, struct sk_buff *skb)
+{
+        struct frag_packet_list_entry *tfp;
+        struct unicast_frag_packet *up =
+                (struct unicast_frag_packet *)skb->data;
+
+        /* free and oldest packets stand at the end */
+        tfp = list_entry((head)->prev, typeof(*tfp), list);
+        kfree_skb(tfp->skb);
+
+        tfp->seqno = ntohs(up->seqno);
+        tfp->skb = skb;
+        list_move(&tfp->list, head);
+        return;
+}
+
+static int frag_create_buffer(struct list_head *head)
+{
+        int i;
+        struct frag_packet_list_entry *tfp;
+
+        for (i = 0; i < FRAG_BUFFER_SIZE; i++) {
+                tfp = kmalloc(sizeof(struct frag_packet_list_entry),
+                        GFP_ATOMIC);
+                if (!tfp) {
+                        frag_list_free(head);
+                        return -ENOMEM;
+                }
+                tfp->skb = NULL;
+                tfp->seqno = 0;
+                INIT_LIST_HEAD(&tfp->list);
+                list_add(&tfp->list, head);
+        }
+
+        return 0;
+}
+
+static struct frag_packet_list_entry *frag_search_packet(struct list_head *head,
+                                                 struct unicast_frag_packet *up)
+{
+        struct frag_packet_list_entry *tfp;
+        struct unicast_frag_packet *tmp_up = NULL;
+        uint16_t search_seqno;
+
+        if (up->flags & UNI_FRAG_HEAD)
+                search_seqno = ntohs(up->seqno)+1;
+        else
+                search_seqno = ntohs(up->seqno)-1;
+
+        list_for_each_entry(tfp, head, list) {
+
+                if (!tfp->skb)
+                        continue;
+
+                if (tfp->seqno == ntohs(up->seqno))
+                        goto mov_tail;
+
+                tmp_up = (struct unicast_frag_packet *)tfp->skb->data;
+
+                if (tfp->seqno == search_seqno) {
+
+                        if ((tmp_up->flags & UNI_FRAG_HEAD) !=
+                            (up->flags & UNI_FRAG_HEAD))
+                                return tfp;
+                        else
+                                goto mov_tail;
+                }
+        }
+        return NULL;
+
+mov_tail:
+        list_move_tail(&tfp->list, head);
+        return NULL;
+}
+
+void frag_list_free(struct list_head *head)
+{
+        struct frag_packet_list_entry *pf, *tmp_pf;
+
+        if (!list_empty(head)) {
+
+                list_for_each_entry_safe(pf, tmp_pf, head, list) {
+                        kfree_skb(pf->skb);
+                        list_del(&pf->list);
+                        kfree(pf);
+                }
+        }
+        return;
+}
+
+/* frag_reassemble_skb():
+ * returns NET_RX_DROP if the operation failed - skb is left intact
+ * returns NET_RX_SUCCESS if the fragment was buffered (skb_new will be NULL)
+ * or the skb could be reassembled (skb_new will point to the new packet and
+ * skb was freed)
+ */
+int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
+                        struct sk_buff **new_skb)
+{
+        struct orig_node *orig_node;
+        struct frag_packet_list_entry *tmp_frag_entry;
+        int ret = NET_RX_DROP;
+        struct unicast_frag_packet *unicast_packet =
+                (struct unicast_frag_packet *)skb->data;
+
+        *new_skb = NULL;
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+        orig_node = ((struct orig_node *)
+                    hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
+                              unicast_packet->orig));
+
+        if (!orig_node) {
+                pr_debug("couldn't find originator in orig_hash\n");
+                goto out;
+        }
+
+        orig_node->last_frag_packet = jiffies;
+
+        if (list_empty(&orig_node->frag_list) &&
+            frag_create_buffer(&orig_node->frag_list)) {
+                pr_debug("couldn't create frag buffer\n");
+                goto out;
+        }
+
+        tmp_frag_entry = frag_search_packet(&orig_node->frag_list,
+                                            unicast_packet);
+
+        if (!tmp_frag_entry) {
+                frag_create_entry(&orig_node->frag_list, skb);
+                ret = NET_RX_SUCCESS;
+                goto out;
+        }
+
+        *new_skb = frag_merge_packet(&orig_node->frag_list, tmp_frag_entry,
+                                     skb);
+        /* if not, merge failed */
+        if (*new_skb)
+                ret = NET_RX_SUCCESS;
+out:
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+        return ret;
+}
+
+int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
+                  struct batman_if *batman_if, uint8_t dstaddr[])
+{
+        struct unicast_packet tmp_uc, *unicast_packet;
+        struct sk_buff *frag_skb;
+        struct unicast_frag_packet *frag1, *frag2;
+        int uc_hdr_len = sizeof(struct unicast_packet);
+        int ucf_hdr_len = sizeof(struct unicast_frag_packet);
+        int data_len = skb->len;
+
+        if (!bat_priv->primary_if)
+                goto dropped;
+
+        unicast_packet = (struct unicast_packet *) skb->data;
+
+        memcpy(&tmp_uc, unicast_packet, uc_hdr_len);
+        frag_skb = dev_alloc_skb(data_len - (data_len / 2) + ucf_hdr_len);
+        skb_split(skb, frag_skb, data_len / 2);
+
+        if (my_skb_head_push(skb, ucf_hdr_len - uc_hdr_len) < 0 ||
+            my_skb_head_push(frag_skb, ucf_hdr_len) < 0)
+                goto drop_frag;
+
+        frag1 = (struct unicast_frag_packet *)skb->data;
+        frag2 = (struct unicast_frag_packet *)frag_skb->data;
+
+        memcpy(frag1, &tmp_uc, sizeof(struct unicast_packet));
+
+        frag1->ttl--;
+        frag1->version = COMPAT_VERSION;
+        frag1->packet_type = BAT_UNICAST_FRAG;
+
+        memcpy(frag1->orig, bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
+        memcpy(frag2, frag1, sizeof(struct unicast_frag_packet));
+
+        frag1->flags |= UNI_FRAG_HEAD;
+        frag2->flags &= ~UNI_FRAG_HEAD;
+
+        frag1->seqno = htons((uint16_t)atomic_inc_return(
+                             &batman_if->frag_seqno));
+        frag2->seqno = htons((uint16_t)atomic_inc_return(
+                             &batman_if->frag_seqno));
+
+        send_skb_packet(skb, batman_if, dstaddr);
+        send_skb_packet(frag_skb, batman_if, dstaddr);
+        return NET_RX_SUCCESS;
+
+drop_frag:
+        kfree_skb(frag_skb);
+dropped:
+        kfree_skb(skb);
+        return NET_RX_DROP;
+}
+
+int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv)
+{
+        struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
+        struct unicast_packet *unicast_packet;
+        struct orig_node *orig_node;
+        struct batman_if *batman_if;
+        struct neigh_node *router;
+        int data_len = skb->len;
+        uint8_t dstaddr[6];
+
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+
+        /* get routing information */
+        if (is_multicast_ether_addr(ethhdr->h_dest))
+                orig_node = (struct orig_node *)gw_get_selected(bat_priv);
+        else
+                orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
+                                                           compare_orig,
+                                                           choose_orig,
+                                                           ethhdr->h_dest));
+
+        /* check for hna host */
+        if (!orig_node)
+                orig_node = transtable_search(bat_priv, ethhdr->h_dest);
+
+        router = find_router(bat_priv, orig_node, NULL);
+
+        if (!router)
+                goto unlock;
+
+        /* don't lock while sending the packets ... we therefore
+                * copy the required data before sending */
+
+        batman_if = router->if_incoming;
+        memcpy(dstaddr, router->addr, ETH_ALEN);
+
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+        if (batman_if->if_status != IF_ACTIVE)
+                goto dropped;
+
+        if (my_skb_head_push(skb, sizeof(struct unicast_packet)) < 0)
+                goto dropped;
+
+        unicast_packet = (struct unicast_packet *)skb->data;
+
+        unicast_packet->version = COMPAT_VERSION;
+        /* batman packet type: unicast */
+        unicast_packet->packet_type = BAT_UNICAST;
+        /* set unicast ttl */
+        unicast_packet->ttl = TTL;
+        /* copy the destination for faster routing */
+        memcpy(unicast_packet->dest, orig_node->orig, ETH_ALEN);
+
+        if (atomic_read(&bat_priv->fragmentation) &&
+            data_len + sizeof(struct unicast_packet) >
+            batman_if->net_dev->mtu) {
+                /* send frag skb decreases ttl */
+                unicast_packet->ttl++;
+                return frag_send_skb(skb, bat_priv, batman_if,
+                                     dstaddr);
+        }
+        send_skb_packet(skb, batman_if, dstaddr);
+        return 0;
+
+unlock:
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+dropped:
+        kfree_skb(skb);
+        return 1;
+}
diff --git a/net/batman-adv/unicast.h b/net/batman-adv/unicast.h
new file mode 100644
index 000000000000..e32b7867a9a4
--- /dev/null
+++ b/net/batman-adv/unicast.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2010 B.A.T.M.A.N. contributors:
+ *
+ * Andreas Langer
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_UNICAST_H_
+#define _NET_BATMAN_ADV_UNICAST_H_
+
+#define FRAG_TIMEOUT 10000      /* purge frag list entrys after time in ms */
+#define FRAG_BUFFER_SIZE 6      /* number of list elements in buffer */
+
+int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
+                        struct sk_buff **new_skb);
+void frag_list_free(struct list_head *head);
+int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv);
+int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
+                  struct batman_if *batman_if, uint8_t dstaddr[]);
+
+#endif /* _NET_BATMAN_ADV_UNICAST_H_ */
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
new file mode 100644
index 000000000000..cd4c4231fa48
--- /dev/null
+++ b/net/batman-adv/vis.c
@@ -0,0 +1,949 @@
+/*
+ * Copyright (C) 2008-2010 B.A.T.M.A.N. contributors:
+ *
+ * Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "send.h"
+#include "translation-table.h"
+#include "vis.h"
+#include "soft-interface.h"
+#include "hard-interface.h"
+#include "hash.h"
+#include "originator.h"
+
+#define MAX_VIS_PACKET_SIZE 1000
+
+/* Returns the smallest signed integer in two's complement with the sizeof x */
+#define smallest_signed_int(x) (1u << (7u + 8u * (sizeof(x) - 1u)))
+
+/* Checks if a sequence number x is a predecessor/successor of y.
+ * they handle overflows/underflows and can correctly check for a
+ * predecessor/successor unless the variable sequence number has grown by
+ * more then 2**(bitwidth(x)-1)-1.
+ * This means that for a uint8_t with the maximum value 255, it would think:
+ *  - when adding nothing - it is neither a predecessor nor a successor
+ *  - before adding more than 127 to the starting value - it is a predecessor,
+ *  - when adding 128 - it is neither a predecessor nor a successor,
+ *  - after adding more than 127 to the starting value - it is a successor */
+#define seq_before(x, y) ({typeof(x) _dummy = (x - y); \
+                        _dummy > smallest_signed_int(_dummy); })
+#define seq_after(x, y) seq_before(y, x)
+
+static void start_vis_timer(struct bat_priv *bat_priv);
+
+/* free the info */
+static void free_info(struct kref *ref)
+{
+        struct vis_info *info = container_of(ref, struct vis_info, refcount);
+        struct bat_priv *bat_priv = info->bat_priv;
+        struct recvlist_node *entry, *tmp;
+
+        list_del_init(&info->send_list);
+        spin_lock_bh(&bat_priv->vis_list_lock);
+        list_for_each_entry_safe(entry, tmp, &info->recv_list, list) {
+                list_del(&entry->list);
+                kfree(entry);
+        }
+
+        spin_unlock_bh(&bat_priv->vis_list_lock);
+        kfree_skb(info->skb_packet);
+}
+
+/* Compare two vis packets, used by the hashing algorithm */
+static int vis_info_cmp(void *data1, void *data2)
+{
+        struct vis_info *d1, *d2;
+        struct vis_packet *p1, *p2;
+        d1 = data1;
+        d2 = data2;
+        p1 = (struct vis_packet *)d1->skb_packet->data;
+        p2 = (struct vis_packet *)d2->skb_packet->data;
+        return compare_orig(p1->vis_orig, p2->vis_orig);
+}
+
+/* hash function to choose an entry in a hash table of given size */
+/* hash algorithm from http://en.wikipedia.org/wiki/Hash_table */
+static int vis_info_choose(void *data, int size)
+{
+        struct vis_info *vis_info = data;
+        struct vis_packet *packet;
+        unsigned char *key;
+        uint32_t hash = 0;
+        size_t i;
+
+        packet = (struct vis_packet *)vis_info->skb_packet->data;
+        key = packet->vis_orig;
+        for (i = 0; i < ETH_ALEN; i++) {
+                hash += key[i];
+                hash += (hash << 10);
+                hash ^= (hash >> 6);
+        }
+
+        hash += (hash << 3);
+        hash ^= (hash >> 11);
+        hash += (hash << 15);
+
+        return hash % size;
+}
+
+/* insert interface to the list of interfaces of one originator, if it
+ * does not already exist in the list */
+static void vis_data_insert_interface(const uint8_t *interface,
+                                      struct hlist_head *if_list,
+                                      bool primary)
+{
+        struct if_list_entry *entry;
+        struct hlist_node *pos;
+
+        hlist_for_each_entry(entry, pos, if_list, list) {
+                if (compare_orig(entry->addr, (void *)interface))
+                        return;
+        }
+
+        /* its a new address, add it to the list */
+        entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
+        if (!entry)
+                return;
+        memcpy(entry->addr, interface, ETH_ALEN);
+        entry->primary = primary;
+        hlist_add_head(&entry->list, if_list);
+}
+
+static ssize_t vis_data_read_prim_sec(char *buff, struct hlist_head *if_list)
+{
+        struct if_list_entry *entry;
+        struct hlist_node *pos;
+        size_t len = 0;
+
+        hlist_for_each_entry(entry, pos, if_list, list) {
+                if (entry->primary)
+                        len += sprintf(buff + len, "PRIMARY, ");
+                else
+                        len += sprintf(buff + len,  "SEC %pM, ", entry->addr);
+        }
+
+        return len;
+}
+
+static size_t vis_data_count_prim_sec(struct hlist_head *if_list)
+{
+        struct if_list_entry *entry;
+        struct hlist_node *pos;
+        size_t count = 0;
+
+        hlist_for_each_entry(entry, pos, if_list, list) {
+                if (entry->primary)
+                        count += 9;
+                else
+                        count += 23;
+        }
+
+        return count;
+}
+
+/* read an entry  */
+static ssize_t vis_data_read_entry(char *buff, struct vis_info_entry *entry,
+                                   uint8_t *src, bool primary)
+{
+        /* maximal length: max(4+17+2, 3+17+1+3+2) == 26 */
+        if (primary && entry->quality == 0)
+                return sprintf(buff, "HNA %pM, ", entry->dest);
+        else if (compare_orig(entry->src, src))
+                return sprintf(buff, "TQ %pM %d, ", entry->dest,
+                               entry->quality);
+
+        return 0;
+}
+
+int vis_seq_print_text(struct seq_file *seq, void *offset)
+{
+        struct hlist_node *walk;
+        struct hlist_head *head;
+        struct element_t *bucket;
+        struct vis_info *info;
+        struct vis_packet *packet;
+        struct vis_info_entry *entries;
+        struct net_device *net_dev = (struct net_device *)seq->private;
+        struct bat_priv *bat_priv = netdev_priv(net_dev);
+        struct hashtable_t *hash = bat_priv->vis_hash;
+        HLIST_HEAD(vis_if_list);
+        struct if_list_entry *entry;
+        struct hlist_node *pos, *n;
+        int i, j;
+        int vis_server = atomic_read(&bat_priv->vis_mode);
+        size_t buff_pos, buf_size;
+        char *buff;
+        int compare;
+
+        if ((!bat_priv->primary_if) ||
+            (vis_server == VIS_TYPE_CLIENT_UPDATE))
+                return 0;
+
+        buf_size = 1;
+        /* Estimate length */
+        spin_lock_bh(&bat_priv->vis_hash_lock);
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry(bucket, walk, head, hlist) {
+                        info = bucket->data;
+                        packet = (struct vis_packet *)info->skb_packet->data;
+                        entries = (struct vis_info_entry *)
+                                ((char *)packet + sizeof(struct vis_packet));
+
+                        for (j = 0; j < packet->entries; j++) {
+                                if (entries[j].quality == 0)
+                                        continue;
+                                compare =
+                                 compare_orig(entries[j].src, packet->vis_orig);
+                                vis_data_insert_interface(entries[j].src,
+                                                          &vis_if_list,
+                                                          compare);
+                        }
+
+                        hlist_for_each_entry(entry, pos, &vis_if_list, list) {
+                                buf_size += 18 + 26 * packet->entries;
+
+                                /* add primary/secondary records */
+                                if (compare_orig(entry->addr, packet->vis_orig))
+                                        buf_size +=
+                                          vis_data_count_prim_sec(&vis_if_list);
+
+                                buf_size += 1;
+                        }
+
+                        hlist_for_each_entry_safe(entry, pos, n, &vis_if_list,
+                                                  list) {
+                                hlist_del(&entry->list);
+                                kfree(entry);
+                        }
+                }
+        }
+
+        buff = kmalloc(buf_size, GFP_ATOMIC);
+        if (!buff) {
+                spin_unlock_bh(&bat_priv->vis_hash_lock);
+                return -ENOMEM;
+        }
+        buff[0] = '\0';
+        buff_pos = 0;
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry(bucket, walk, head, hlist) {
+                        info = bucket->data;
+                        packet = (struct vis_packet *)info->skb_packet->data;
+                        entries = (struct vis_info_entry *)
+                                ((char *)packet + sizeof(struct vis_packet));
+
+                        for (j = 0; j < packet->entries; j++) {
+                                if (entries[j].quality == 0)
+                                        continue;
+                                compare =
+                                 compare_orig(entries[j].src, packet->vis_orig);
+                                vis_data_insert_interface(entries[j].src,
+                                                          &vis_if_list,
+                                                          compare);
+                        }
+
+                        hlist_for_each_entry(entry, pos, &vis_if_list, list) {
+                                buff_pos += sprintf(buff + buff_pos, "%pM,",
+                                                entry->addr);
+
+                                for (i = 0; i < packet->entries; i++)
+                                        buff_pos += vis_data_read_entry(
+                                                        buff + buff_pos,
+                                                        &entries[i],
+                                                        entry->addr,
+                                                        entry->primary);
+
+                                /* add primary/secondary records */
+                                if (compare_orig(entry->addr, packet->vis_orig))
+                                        buff_pos +=
+                                         vis_data_read_prim_sec(buff + buff_pos,
+                                                                &vis_if_list);
+
+                                buff_pos += sprintf(buff + buff_pos, "\n");
+                        }
+
+                        hlist_for_each_entry_safe(entry, pos, n, &vis_if_list,
+                                                  list) {
+                                hlist_del(&entry->list);
+                                kfree(entry);
+                        }
+                }
+        }
+
+        spin_unlock_bh(&bat_priv->vis_hash_lock);
+
+        seq_printf(seq, "%s", buff);
+        kfree(buff);
+
+        return 0;
+}
+
+/* add the info packet to the send list, if it was not
+ * already linked in. */
+static void send_list_add(struct bat_priv *bat_priv, struct vis_info *info)
+{
+        if (list_empty(&info->send_list)) {
+                kref_get(&info->refcount);
+                list_add_tail(&info->send_list, &bat_priv->vis_send_list);
+        }
+}
+
+/* delete the info packet from the send list, if it was
+ * linked in. */
+static void send_list_del(struct vis_info *info)
+{
+        if (!list_empty(&info->send_list)) {
+                list_del_init(&info->send_list);
+                kref_put(&info->refcount, free_info);
+        }
+}
+
+/* tries to add one entry to the receive list. */
+static void recv_list_add(struct bat_priv *bat_priv,
+                          struct list_head *recv_list, char *mac)
+{
+        struct recvlist_node *entry;
+
+        entry = kmalloc(sizeof(struct recvlist_node), GFP_ATOMIC);
+        if (!entry)
+                return;
+
+        memcpy(entry->mac, mac, ETH_ALEN);
+        spin_lock_bh(&bat_priv->vis_list_lock);
+        list_add_tail(&entry->list, recv_list);
+        spin_unlock_bh(&bat_priv->vis_list_lock);
+}
+
+/* returns 1 if this mac is in the recv_list */
+static int recv_list_is_in(struct bat_priv *bat_priv,
+                           struct list_head *recv_list, char *mac)
+{
+        struct recvlist_node *entry;
+
+        spin_lock_bh(&bat_priv->vis_list_lock);
+        list_for_each_entry(entry, recv_list, list) {
+                if (memcmp(entry->mac, mac, ETH_ALEN) == 0) {
+                        spin_unlock_bh(&bat_priv->vis_list_lock);
+                        return 1;
+                }
+        }
+        spin_unlock_bh(&bat_priv->vis_list_lock);
+        return 0;
+}
+
+/* try to add the packet to the vis_hash. return NULL if invalid (e.g. too old,
+ * broken.. ).  vis hash must be locked outside.  is_new is set when the packet
+ * is newer than old entries in the hash. */
+static struct vis_info *add_packet(struct bat_priv *bat_priv,
+                                   struct vis_packet *vis_packet,
+                                   int vis_info_len, int *is_new,
+                                   int make_broadcast)
+{
+        struct vis_info *info, *old_info;
+        struct vis_packet *search_packet, *old_packet;
+        struct vis_info search_elem;
+        struct vis_packet *packet;
+        int hash_added;
+
+        *is_new = 0;
+        /* sanity check */
+        if (!bat_priv->vis_hash)
+                return NULL;
+
+        /* see if the packet is already in vis_hash */
+        search_elem.skb_packet = dev_alloc_skb(sizeof(struct vis_packet));
+        if (!search_elem.skb_packet)
+                return NULL;
+        search_packet = (struct vis_packet *)skb_put(search_elem.skb_packet,
+                                                     sizeof(struct vis_packet));
+
+        memcpy(search_packet->vis_orig, vis_packet->vis_orig, ETH_ALEN);
+        old_info = hash_find(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
+                             &search_elem);
+        kfree_skb(search_elem.skb_packet);
+
+        if (old_info) {
+                old_packet = (struct vis_packet *)old_info->skb_packet->data;
+                if (!seq_after(ntohl(vis_packet->seqno),
+                               ntohl(old_packet->seqno))) {
+                        if (old_packet->seqno == vis_packet->seqno) {
+                                recv_list_add(bat_priv, &old_info->recv_list,
+                                              vis_packet->sender_orig);
+                                return old_info;
+                        } else {
+                                /* newer packet is already in hash. */
+                                return NULL;
+                        }
+                }
+                /* remove old entry */
+                hash_remove(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
+                            old_info);
+                send_list_del(old_info);
+                kref_put(&old_info->refcount, free_info);
+        }
+
+        info = kmalloc(sizeof(struct vis_info), GFP_ATOMIC);
+        if (!info)
+                return NULL;
+
+        info->skb_packet = dev_alloc_skb(sizeof(struct vis_packet) +
+                                         vis_info_len + sizeof(struct ethhdr));
+        if (!info->skb_packet) {
+                kfree(info);
+                return NULL;
+        }
+        skb_reserve(info->skb_packet, sizeof(struct ethhdr));
+        packet = (struct vis_packet *)skb_put(info->skb_packet,
+                                              sizeof(struct vis_packet) +
+                                              vis_info_len);
+
+        kref_init(&info->refcount);
+        INIT_LIST_HEAD(&info->send_list);
+        INIT_LIST_HEAD(&info->recv_list);
+        info->first_seen = jiffies;
+        info->bat_priv = bat_priv;
+        memcpy(packet, vis_packet, sizeof(struct vis_packet) + vis_info_len);
+
+        /* initialize and add new packet. */
+        *is_new = 1;
+
+        /* Make it a broadcast packet, if required */
+        if (make_broadcast)
+                memcpy(packet->target_orig, broadcast_addr, ETH_ALEN);
+
+        /* repair if entries is longer than packet. */
+        if (packet->entries * sizeof(struct vis_info_entry) > vis_info_len)
+                packet->entries = vis_info_len / sizeof(struct vis_info_entry);
+
+        recv_list_add(bat_priv, &info->recv_list, packet->sender_orig);
+
+        /* try to add it */
+        hash_added = hash_add(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
+                              info);
+        if (hash_added < 0) {
+                /* did not work (for some reason) */
+                kref_put(&old_info->refcount, free_info);
+                info = NULL;
+        }
+
+        return info;
+}
+
+/* handle the server sync packet, forward if needed. */
+void receive_server_sync_packet(struct bat_priv *bat_priv,
+                                struct vis_packet *vis_packet,
+                                int vis_info_len)
+{
+        struct vis_info *info;
+        int is_new, make_broadcast;
+        int vis_server = atomic_read(&bat_priv->vis_mode);
+
+        make_broadcast = (vis_server == VIS_TYPE_SERVER_SYNC);
+
+        spin_lock_bh(&bat_priv->vis_hash_lock);
+        info = add_packet(bat_priv, vis_packet, vis_info_len,
+                          &is_new, make_broadcast);
+        if (!info)
+                goto end;
+
+        /* only if we are server ourselves and packet is newer than the one in
+         * hash.*/
+        if (vis_server == VIS_TYPE_SERVER_SYNC && is_new)
+                send_list_add(bat_priv, info);
+end:
+        spin_unlock_bh(&bat_priv->vis_hash_lock);
+}
+
+/* handle an incoming client update packet and schedule forward if needed. */
+void receive_client_update_packet(struct bat_priv *bat_priv,
+                                  struct vis_packet *vis_packet,
+                                  int vis_info_len)
+{
+        struct vis_info *info;
+        struct vis_packet *packet;
+        int is_new;
+        int vis_server = atomic_read(&bat_priv->vis_mode);
+        int are_target = 0;
+
+        /* clients shall not broadcast. */
+        if (is_broadcast_ether_addr(vis_packet->target_orig))
+                return;
+
+        /* Are we the target for this VIS packet? */
+        if (vis_server == VIS_TYPE_SERVER_SYNC  &&
+            is_my_mac(vis_packet->target_orig))
+                are_target = 1;
+
+        spin_lock_bh(&bat_priv->vis_hash_lock);
+        info = add_packet(bat_priv, vis_packet, vis_info_len,
+                          &is_new, are_target);
+
+        if (!info)
+                goto end;
+        /* note that outdated packets will be dropped at this point. */
+
+        packet = (struct vis_packet *)info->skb_packet->data;
+
+        /* send only if we're the target server or ... */
+        if (are_target && is_new) {
+                packet->vis_type = VIS_TYPE_SERVER_SYNC;        /* upgrade! */
+                send_list_add(bat_priv, info);
+
+                /* ... we're not the recipient (and thus need to forward). */
+        } else if (!is_my_mac(packet->target_orig)) {
+                send_list_add(bat_priv, info);
+        }
+
+end:
+        spin_unlock_bh(&bat_priv->vis_hash_lock);
+}
+
+/* Walk the originators and find the VIS server with the best tq. Set the packet
+ * address to its address and return the best_tq.
+ *
+ * Must be called with the originator hash locked */
+static int find_best_vis_server(struct bat_priv *bat_priv,
+                                struct vis_info *info)
+{
+        struct hashtable_t *hash = bat_priv->orig_hash;
+        struct hlist_node *walk;
+        struct hlist_head *head;
+        struct element_t *bucket;
+        struct orig_node *orig_node;
+        struct vis_packet *packet;
+        int best_tq = -1, i;
+
+        packet = (struct vis_packet *)info->skb_packet->data;
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry(bucket, walk, head, hlist) {
+                        orig_node = bucket->data;
+                        if ((orig_node) && (orig_node->router) &&
+                        (orig_node->flags & VIS_SERVER) &&
+                        (orig_node->router->tq_avg > best_tq)) {
+                                best_tq = orig_node->router->tq_avg;
+                                memcpy(packet->target_orig, orig_node->orig,
+                                       ETH_ALEN);
+                        }
+                }
+        }
+
+        return best_tq;
+}
+
+/* Return true if the vis packet is full. */
+static bool vis_packet_full(struct vis_info *info)
+{
+        struct vis_packet *packet;
+        packet = (struct vis_packet *)info->skb_packet->data;
+
+        if (MAX_VIS_PACKET_SIZE / sizeof(struct vis_info_entry)
+                < packet->entries + 1)
+                return true;
+        return false;
+}
+
+/* generates a packet of own vis data,
+ * returns 0 on success, -1 if no packet could be generated */
+static int generate_vis_packet(struct bat_priv *bat_priv)
+{
+        struct hashtable_t *hash = bat_priv->orig_hash;
+        struct hlist_node *walk;
+        struct hlist_head *head;
+        struct element_t *bucket;
+        struct orig_node *orig_node;
+        struct neigh_node *neigh_node;
+        struct vis_info *info = (struct vis_info *)bat_priv->my_vis_info;
+        struct vis_packet *packet = (struct vis_packet *)info->skb_packet->data;
+        struct vis_info_entry *entry;
+        struct hna_local_entry *hna_local_entry;
+        int best_tq = -1, i;
+
+        info->first_seen = jiffies;
+        packet->vis_type = atomic_read(&bat_priv->vis_mode);
+
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+        memcpy(packet->target_orig, broadcast_addr, ETH_ALEN);
+        packet->ttl = TTL;
+        packet->seqno = htonl(ntohl(packet->seqno) + 1);
+        packet->entries = 0;
+        skb_trim(info->skb_packet, sizeof(struct vis_packet));
+
+        if (packet->vis_type == VIS_TYPE_CLIENT_UPDATE) {
+                best_tq = find_best_vis_server(bat_priv, info);
+
+                if (best_tq < 0) {
+                        spin_unlock_bh(&bat_priv->orig_hash_lock);
+                        return -1;
+                }
+        }
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry(bucket, walk, head, hlist) {
+                        orig_node = bucket->data;
+                        neigh_node = orig_node->router;
+
+                        if (!neigh_node)
+                                continue;
+
+                        if (!compare_orig(neigh_node->addr, orig_node->orig))
+                                continue;
+
+                        if (neigh_node->if_incoming->if_status != IF_ACTIVE)
+                                continue;
+
+                        if (neigh_node->tq_avg < 1)
+                                continue;
+
+                        /* fill one entry into buffer. */
+                        entry = (struct vis_info_entry *)
+                                      skb_put(info->skb_packet, sizeof(*entry));
+                        memcpy(entry->src,
+                               neigh_node->if_incoming->net_dev->dev_addr,
+                               ETH_ALEN);
+                        memcpy(entry->dest, orig_node->orig, ETH_ALEN);
+                        entry->quality = neigh_node->tq_avg;
+                        packet->entries++;
+
+                        if (vis_packet_full(info)) {
+                                spin_unlock_bh(&bat_priv->orig_hash_lock);
+                                return 0;
+                        }
+                }
+        }
+
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+        hash = bat_priv->hna_local_hash;
+
+        spin_lock_bh(&bat_priv->hna_lhash_lock);
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry(bucket, walk, head, hlist) {
+                        hna_local_entry = bucket->data;
+                        entry = (struct vis_info_entry *)
+                                        skb_put(info->skb_packet,
+                                                sizeof(*entry));
+                        memset(entry->src, 0, ETH_ALEN);
+                        memcpy(entry->dest, hna_local_entry->addr, ETH_ALEN);
+                        entry->quality = 0; /* 0 means HNA */
+                        packet->entries++;
+
+                        if (vis_packet_full(info)) {
+                                spin_unlock_bh(&bat_priv->hna_lhash_lock);
+                                return 0;
+                        }
+                }
+        }
+
+        spin_unlock_bh(&bat_priv->hna_lhash_lock);
+        return 0;
+}
+
+/* free old vis packets. Must be called with this vis_hash_lock
+ * held */
+static void purge_vis_packets(struct bat_priv *bat_priv)
+{
+        int i;
+        struct hashtable_t *hash = bat_priv->vis_hash;
+        struct hlist_node *walk, *safe;
+        struct hlist_head *head;
+        struct element_t *bucket;
+        struct vis_info *info;
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry_safe(bucket, walk, safe, head, hlist) {
+                        info = bucket->data;
+
+                        /* never purge own data. */
+                        if (info == bat_priv->my_vis_info)
+                                continue;
+
+                        if (time_after(jiffies,
+                                       info->first_seen + VIS_TIMEOUT * HZ)) {
+                                hlist_del(walk);
+                                kfree(bucket);
+                                send_list_del(info);
+                                kref_put(&info->refcount, free_info);
+                        }
+                }
+        }
+}
+
+static void broadcast_vis_packet(struct bat_priv *bat_priv,
+                                 struct vis_info *info)
+{
+        struct hashtable_t *hash = bat_priv->orig_hash;
+        struct hlist_node *walk;
+        struct hlist_head *head;
+        struct element_t *bucket;
+        struct orig_node *orig_node;
+        struct vis_packet *packet;
+        struct sk_buff *skb;
+        struct batman_if *batman_if;
+        uint8_t dstaddr[ETH_ALEN];
+        int i;
+
+
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+        packet = (struct vis_packet *)info->skb_packet->data;
+
+        /* send to all routers in range. */
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                hlist_for_each_entry(bucket, walk, head, hlist) {
+                        orig_node = bucket->data;
+
+                        /* if it's a vis server and reachable, send it. */
+                        if ((!orig_node) || (!orig_node->router))
+                                continue;
+                        if (!(orig_node->flags & VIS_SERVER))
+                                continue;
+                        /* don't send it if we already received the packet from
+                        * this node. */
+                        if (recv_list_is_in(bat_priv, &info->recv_list,
+                                            orig_node->orig))
+                                continue;
+
+                        memcpy(packet->target_orig, orig_node->orig, ETH_ALEN);
+                        batman_if = orig_node->router->if_incoming;
+                        memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
+                        spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+                        skb = skb_clone(info->skb_packet, GFP_ATOMIC);
+                        if (skb)
+                                send_skb_packet(skb, batman_if, dstaddr);
+
+                        spin_lock_bh(&bat_priv->orig_hash_lock);
+                }
+
+        }
+
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+}
+
+static void unicast_vis_packet(struct bat_priv *bat_priv,
+                               struct vis_info *info)
+{
+        struct orig_node *orig_node;
+        struct sk_buff *skb;
+        struct vis_packet *packet;
+        struct batman_if *batman_if;
+        uint8_t dstaddr[ETH_ALEN];
+
+        spin_lock_bh(&bat_priv->orig_hash_lock);
+        packet = (struct vis_packet *)info->skb_packet->data;
+        orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
+                                                   compare_orig, choose_orig,
+                                                   packet->target_orig));
+
+        if ((!orig_node) || (!orig_node->router))
+                goto out;
+
+        /* don't lock while sending the packets ... we therefore
+         * copy the required data before sending */
+        batman_if = orig_node->router->if_incoming;
+        memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+
+        skb = skb_clone(info->skb_packet, GFP_ATOMIC);
+        if (skb)
+                send_skb_packet(skb, batman_if, dstaddr);
+
+        return;
+
+out:
+        spin_unlock_bh(&bat_priv->orig_hash_lock);
+}
+
+/* only send one vis packet. called from send_vis_packets() */
+static void send_vis_packet(struct bat_priv *bat_priv, struct vis_info *info)
+{
+        struct vis_packet *packet;
+
+        packet = (struct vis_packet *)info->skb_packet->data;
+        if (packet->ttl < 2) {
+                pr_debug("Error - can't send vis packet: ttl exceeded\n");
+                return;
+        }
+
+        memcpy(packet->sender_orig, bat_priv->primary_if->net_dev->dev_addr,
+               ETH_ALEN);
+        packet->ttl--;
+
+        if (is_broadcast_ether_addr(packet->target_orig))
+                broadcast_vis_packet(bat_priv, info);
+        else
+                unicast_vis_packet(bat_priv, info);
+        packet->ttl++; /* restore TTL */
+}
+
+/* called from timer; send (and maybe generate) vis packet. */
+static void send_vis_packets(struct work_struct *work)
+{
+        struct delayed_work *delayed_work =
+                container_of(work, struct delayed_work, work);
+        struct bat_priv *bat_priv =
+                container_of(delayed_work, struct bat_priv, vis_work);
+        struct vis_info *info, *temp;
+
+        spin_lock_bh(&bat_priv->vis_hash_lock);
+        purge_vis_packets(bat_priv);
+
+        if (generate_vis_packet(bat_priv) == 0) {
+                /* schedule if generation was successful */
+                send_list_add(bat_priv, bat_priv->my_vis_info);
+        }
+
+        list_for_each_entry_safe(info, temp, &bat_priv->vis_send_list,
+                                 send_list) {
+
+                kref_get(&info->refcount);
+                spin_unlock_bh(&bat_priv->vis_hash_lock);
+
+                if (bat_priv->primary_if)
+                        send_vis_packet(bat_priv, info);
+
+                spin_lock_bh(&bat_priv->vis_hash_lock);
+                send_list_del(info);
+                kref_put(&info->refcount, free_info);
+        }
+        spin_unlock_bh(&bat_priv->vis_hash_lock);
+        start_vis_timer(bat_priv);
+}
+
+/* init the vis server. this may only be called when if_list is already
+ * initialized (e.g. bat0 is initialized, interfaces have been added) */
+int vis_init(struct bat_priv *bat_priv)
+{
+        struct vis_packet *packet;
+        int hash_added;
+
+        if (bat_priv->vis_hash)
+                return 1;
+
+        spin_lock_bh(&bat_priv->vis_hash_lock);
+
+        bat_priv->vis_hash = hash_new(256);
+        if (!bat_priv->vis_hash) {
+                pr_err("Can't initialize vis_hash\n");
+                goto err;
+        }
+
+        bat_priv->my_vis_info = kmalloc(MAX_VIS_PACKET_SIZE, GFP_ATOMIC);
+        if (!bat_priv->my_vis_info) {
+                pr_err("Can't initialize vis packet\n");
+                goto err;
+        }
+
+        bat_priv->my_vis_info->skb_packet = dev_alloc_skb(
+                                                sizeof(struct vis_packet) +
+                                                MAX_VIS_PACKET_SIZE +
+                                                sizeof(struct ethhdr));
+        if (!bat_priv->my_vis_info->skb_packet)
+                goto free_info;
+
+        skb_reserve(bat_priv->my_vis_info->skb_packet, sizeof(struct ethhdr));
+        packet = (struct vis_packet *)skb_put(
+                                        bat_priv->my_vis_info->skb_packet,
+                                        sizeof(struct vis_packet));
+
+        /* prefill the vis info */
+        bat_priv->my_vis_info->first_seen = jiffies -
+                                                msecs_to_jiffies(VIS_INTERVAL);
+        INIT_LIST_HEAD(&bat_priv->my_vis_info->recv_list);
+        INIT_LIST_HEAD(&bat_priv->my_vis_info->send_list);
+        kref_init(&bat_priv->my_vis_info->refcount);
+        bat_priv->my_vis_info->bat_priv = bat_priv;
+        packet->version = COMPAT_VERSION;
+        packet->packet_type = BAT_VIS;
+        packet->ttl = TTL;
+        packet->seqno = 0;
+        packet->entries = 0;
+
+        INIT_LIST_HEAD(&bat_priv->vis_send_list);
+
+        hash_added = hash_add(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
+                              bat_priv->my_vis_info);
+        if (hash_added < 0) {
+                pr_err("Can't add own vis packet into hash\n");
+                /* not in hash, need to remove it manually. */
+                kref_put(&bat_priv->my_vis_info->refcount, free_info);
+                goto err;
+        }
+
+        spin_unlock_bh(&bat_priv->vis_hash_lock);
+        start_vis_timer(bat_priv);
+        return 1;
+
+free_info:
+        kfree(bat_priv->my_vis_info);
+        bat_priv->my_vis_info = NULL;
+err:
+        spin_unlock_bh(&bat_priv->vis_hash_lock);
+        vis_quit(bat_priv);
+        return 0;
+}
+
+/* Decrease the reference count on a hash item info */
+static void free_info_ref(void *data, void *arg)
+{
+        struct vis_info *info = data;
+
+        send_list_del(info);
+        kref_put(&info->refcount, free_info);
+}
+
+/* shutdown vis-server */
+void vis_quit(struct bat_priv *bat_priv)
+{
+        if (!bat_priv->vis_hash)
+                return;
+
+        cancel_delayed_work_sync(&bat_priv->vis_work);
+
+        spin_lock_bh(&bat_priv->vis_hash_lock);
+        /* properly remove, kill timers ... */
+        hash_delete(bat_priv->vis_hash, free_info_ref, NULL);
+        bat_priv->vis_hash = NULL;
+        bat_priv->my_vis_info = NULL;
+        spin_unlock_bh(&bat_priv->vis_hash_lock);
+}
+
+/* schedule packets for (re)transmission */
+static void start_vis_timer(struct bat_priv *bat_priv)
+{
+        INIT_DELAYED_WORK(&bat_priv->vis_work, send_vis_packets);
+        queue_delayed_work(bat_event_workqueue, &bat_priv->vis_work,
+                           msecs_to_jiffies(VIS_INTERVAL));
+}
diff --git a/net/batman-adv/vis.h b/net/batman-adv/vis.h
new file mode 100644
index 000000000000..2c3b33089a9b
--- /dev/null
+++ b/net/batman-adv/vis.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2008-2010 B.A.T.M.A.N. contributors:
+ *
+ * Simon Wunderlich, Marek Lindner
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_VIS_H_
+#define _NET_BATMAN_ADV_VIS_H_
+
+#define VIS_TIMEOUT             200     /* timeout of vis packets in seconds */
+
+int vis_seq_print_text(struct seq_file *seq, void *offset);
+void receive_server_sync_packet(struct bat_priv *bat_priv,
+                                struct vis_packet *vis_packet,
+                                int vis_info_len);
+void receive_client_update_packet(struct bat_priv *bat_priv,
+                                  struct vis_packet *vis_packet,
+                                  int vis_info_len);
+int vis_init(struct bat_priv *bat_priv);
+void vis_quit(struct bat_priv *bat_priv);
+
+#endif /* _NET_BATMAN_ADV_VIS_H_ */
diff --git a/net/bluetooth/Makefile b/net/bluetooth/Makefile
index d1e433f7d673..7ca1f46a471a 100644
--- a/net/bluetooth/Makefile
+++ b/net/bluetooth/Makefile
@@ -10,4 +10,4 @@ obj-$(CONFIG_BT_BNEP)	+= bnep/
 obj-$(CONFIG_BT_CMTP)   += cmtp/
 obj-$(CONFIG_BT_HIDP)   += hidp/
 
-bluetooth-objs := af_bluetooth.o hci_core.o hci_conn.o hci_event.o hci_sock.o hci_sysfs.o lib.o
+bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o hci_sock.o hci_sysfs.o lib.o
diff --git a/net/bluetooth/bnep/core.c b/net/bluetooth/bnep/core.c
index f10b41fb05a0..5868597534e5 100644
--- a/net/bluetooth/bnep/core.c
+++ b/net/bluetooth/bnep/core.c
@@ -648,6 +648,7 @@ int bnep_del_connection(struct bnep_conndel_req *req)
 
 static void __bnep_copy_ci(struct bnep_conninfo *ci, struct bnep_session *s)
 {
+        memset(ci, 0, sizeof(*ci));
         memcpy(ci->dst, s->eh.h_source, ETH_ALEN);
         strcpy(ci->device, s->dev->name);
         ci->flags = s->flags;
diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c
index ec0a1347f933..8e5f292529ac 100644
--- a/net/bluetooth/cmtp/core.c
+++ b/net/bluetooth/cmtp/core.c
@@ -78,6 +78,7 @@ static void __cmtp_unlink_session(struct cmtp_session *session)
 
 static void __cmtp_copy_session(struct cmtp_session *session, struct cmtp_conninfo *ci)
 {
+        memset(ci, 0, sizeof(*ci));
         bacpy(&ci->bdaddr, &session->bdaddr);
 
         ci->flags = session->flags;
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 0b1e460fe440..6b90a4191734 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -39,7 +39,7 @@
 #include <net/sock.h>
 
 #include <asm/system.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/unaligned.h>
 
 #include <net/bluetooth/bluetooth.h>
@@ -66,7 +66,8 @@ void hci_acl_connect(struct hci_conn *conn)
         bacpy(&cp.bdaddr, &conn->dst);
         cp.pscan_rep_mode = 0x02;
 
-        if ((ie = hci_inquiry_cache_lookup(hdev, &conn->dst))) {
+        ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
+        if (ie) {
                 if (inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) {
                         cp.pscan_rep_mode = ie->data.pscan_rep_mode;
                         cp.pscan_mode     = ie->data.pscan_mode;
@@ -368,8 +369,10 @@ struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8
 
         BT_DBG("%s dst %s", hdev->name, batostr(dst));
 
-        if (!(acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst))) {
-                if (!(acl = hci_conn_add(hdev, ACL_LINK, dst)))
+        acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst);
+        if (!acl) {
+                acl = hci_conn_add(hdev, ACL_LINK, dst);
+                if (!acl)
                         return NULL;
         }
 
@@ -389,8 +392,10 @@ struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8
         if (type == ACL_LINK)
                 return acl;
 
-        if (!(sco = hci_conn_hash_lookup_ba(hdev, type, dst))) {
-                if (!(sco = hci_conn_add(hdev, type, dst))) {
+        sco = hci_conn_hash_lookup_ba(hdev, type, dst);
+        if (!sco) {
+                sco = hci_conn_add(hdev, type, dst);
+                if (!sco) {
                         hci_conn_put(acl);
                         return NULL;
                 }
@@ -647,10 +652,12 @@ int hci_get_conn_list(void __user *arg)
 
         size = sizeof(req) + req.conn_num * sizeof(*ci);
 
-        if (!(cl = kmalloc(size, GFP_KERNEL)))
+        cl = kmalloc(size, GFP_KERNEL);
+        if (!cl)
                 return -ENOMEM;
 
-        if (!(hdev = hci_dev_get(req.dev_id))) {
+        hdev = hci_dev_get(req.dev_id);
+        if (!hdev) {
                 kfree(cl);
                 return -ENODEV;
         }
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index bc2a052e518b..51c61f75a797 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -44,7 +44,7 @@
 #include <net/sock.h>
 
 #include <asm/system.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/unaligned.h>
 
 #include <net/bluetooth/bluetooth.h>
@@ -349,20 +349,23 @@ struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *b
 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data)
 {
         struct inquiry_cache *cache = &hdev->inq_cache;
-        struct inquiry_entry *e;
+        struct inquiry_entry *ie;
 
         BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr));
 
-        if (!(e = hci_inquiry_cache_lookup(hdev, &data->bdaddr))) {
+        ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr);
+        if (!ie) {
                 /* Entry not in the cache. Add new one. */
-                if (!(e = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC)))
+                ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC);
+                if (!ie)
                         return;
-                e->next     = cache->list;
-                cache->list = e;
+
+                ie->next = cache->list;
+                cache->list = ie;
         }
 
-        memcpy(&e->data, data, sizeof(*data));
-        e->timestamp = jiffies;
+        memcpy(&ie->data, data, sizeof(*data));
+        ie->timestamp = jiffies;
         cache->timestamp = jiffies;
 }
 
@@ -422,16 +425,20 @@ int hci_inquiry(void __user *arg)
 
         hci_dev_lock_bh(hdev);
         if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX ||
-                                        inquiry_cache_empty(hdev) ||
-                                        ir.flags & IREQ_CACHE_FLUSH) {
+                                inquiry_cache_empty(hdev) ||
+                                ir.flags & IREQ_CACHE_FLUSH) {
                 inquiry_cache_flush(hdev);
                 do_inquiry = 1;
         }
         hci_dev_unlock_bh(hdev);
 
         timeo = ir.length * msecs_to_jiffies(2000);
-        if (do_inquiry && (err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo)) < 0)
-                goto done;
+
+        if (do_inquiry) {
+                err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo);
+                if (err < 0)
+                        goto done;
+        }
 
         /* for unlimited number of responses we will use buffer with 255 entries */
         max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp;
@@ -439,7 +446,8 @@ int hci_inquiry(void __user *arg)
         /* cache_dump can't sleep. Therefore we allocate temp buffer and then
          * copy it to the user space.
          */
-        if (!(buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL))) {
+        buf = kmalloc(sizeof(struct inquiry_info) *max_rsp, GFP_KERNEL);
+        if (!buf) {
                 err = -ENOMEM;
                 goto done;
         }
@@ -611,7 +619,8 @@ int hci_dev_close(__u16 dev)
         struct hci_dev *hdev;
         int err;
 
-        if (!(hdev = hci_dev_get(dev)))
+        hdev = hci_dev_get(dev);
+        if (!hdev)
                 return -ENODEV;
         err = hci_dev_do_close(hdev);
         hci_dev_put(hdev);
@@ -623,7 +632,8 @@ int hci_dev_reset(__u16 dev)
         struct hci_dev *hdev;
         int ret = 0;
 
-        if (!(hdev = hci_dev_get(dev)))
+        hdev = hci_dev_get(dev);
+        if (!hdev)
                 return -ENODEV;
 
         hci_req_lock(hdev);
@@ -663,7 +673,8 @@ int hci_dev_reset_stat(__u16 dev)
         struct hci_dev *hdev;
         int ret = 0;
 
-        if (!(hdev = hci_dev_get(dev)))
+        hdev = hci_dev_get(dev);
+        if (!hdev)
                 return -ENODEV;
 
         memset(&hdev->stat, 0, sizeof(struct hci_dev_stats));
@@ -682,7 +693,8 @@ int hci_dev_cmd(unsigned int cmd, void __user *arg)
         if (copy_from_user(&dr, arg, sizeof(dr)))
                 return -EFAULT;
 
-        if (!(hdev = hci_dev_get(dr.dev_id)))
+        hdev = hci_dev_get(dr.dev_id);
+        if (!hdev)
                 return -ENODEV;
 
         switch (cmd) {
@@ -763,7 +775,8 @@ int hci_get_dev_list(void __user *arg)
 
         size = sizeof(*dl) + dev_num * sizeof(*dr);
 
-        if (!(dl = kzalloc(size, GFP_KERNEL)))
+        dl = kzalloc(size, GFP_KERNEL);
+        if (!dl)
                 return -ENOMEM;
 
         dr = dl->dev_req;
@@ -797,7 +810,8 @@ int hci_get_dev_info(void __user *arg)
         if (copy_from_user(&di, arg, sizeof(di)))
                 return -EFAULT;
 
-        if (!(hdev = hci_dev_get(di.dev_id)))
+        hdev = hci_dev_get(di.dev_id);
+        if (!hdev)
                 return -ENODEV;
 
         strcpy(di.name, hdev->name);
@@ -905,7 +919,7 @@ int hci_register_dev(struct hci_dev *hdev)
         hdev->sniff_max_interval = 800;
         hdev->sniff_min_interval = 80;
 
-        tasklet_init(&hdev->cmd_task, hci_cmd_task,(unsigned long) hdev);
+        tasklet_init(&hdev->cmd_task, hci_cmd_task, (unsigned long) hdev);
         tasklet_init(&hdev->rx_task, hci_rx_task, (unsigned long) hdev);
         tasklet_init(&hdev->tx_task, hci_tx_task, (unsigned long) hdev);
 
@@ -1368,7 +1382,8 @@ void hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags)
         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
         hci_add_acl_hdr(skb, conn->handle, flags | ACL_START);
 
-        if (!(list = skb_shinfo(skb)->frag_list)) {
+        list = skb_shinfo(skb)->frag_list;
+        if (!list) {
                 /* Non fragmented */
                 BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len);
 
@@ -1609,7 +1624,8 @@ static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb)
                 hci_conn_enter_active_mode(conn);
 
                 /* Send to upper protocol */
-                if ((hp = hci_proto[HCI_PROTO_L2CAP]) && hp->recv_acldata) {
+                hp = hci_proto[HCI_PROTO_L2CAP];
+                if (hp && hp->recv_acldata) {
                         hp->recv_acldata(conn, skb, flags);
                         return;
                 }
@@ -1644,7 +1660,8 @@ static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb)
                 register struct hci_proto *hp;
 
                 /* Send to upper protocol */
-                if ((hp = hci_proto[HCI_PROTO_SCO]) && hp->recv_scodata) {
+                hp = hci_proto[HCI_PROTO_SCO];
+                if (hp && hp->recv_scodata) {
                         hp->recv_scodata(conn, skb);
                         return;
                 }
@@ -1727,7 +1744,8 @@ static void hci_cmd_task(unsigned long arg)
         if (atomic_read(&hdev->cmd_cnt) && (skb = skb_dequeue(&hdev->cmd_q))) {
                 kfree_skb(hdev->sent_cmd);
 
-                if ((hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC))) {
+                hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC);
+                if (hdev->sent_cmd) {
                         atomic_dec(&hdev->cmd_cnt);
                         hci_send_frame(skb);
                         hdev->cmd_last_tx = jiffies;
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 84093b0000b9..8923b36a67a2 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -39,7 +39,7 @@
 #include <net/sock.h>
 
 #include <asm/system.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/unaligned.h>
 
 #include <net/bluetooth/bluetooth.h>
@@ -677,9 +677,50 @@ static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
         hci_dev_unlock(hdev);
 }
 
+static int hci_outgoing_auth_needed(struct hci_dev *hdev,
+                                                struct hci_conn *conn)
+{
+        if (conn->state != BT_CONFIG || !conn->out)
+                return 0;
+
+        if (conn->sec_level == BT_SECURITY_SDP)
+                return 0;
+
+        /* Only request authentication for SSP connections or non-SSP
+         * devices with sec_level HIGH */
+        if (!(hdev->ssp_mode > 0 && conn->ssp_mode > 0) &&
+                                        conn->sec_level != BT_SECURITY_HIGH)
+                return 0;
+
+        return 1;
+}
+
 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
 {
+        struct hci_cp_remote_name_req *cp;
+        struct hci_conn *conn;
+
         BT_DBG("%s status 0x%x", hdev->name, status);
+
+        /* If successful wait for the name req complete event before
+         * checking for the need to do authentication */
+        if (!status)
+                return;
+
+        cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
+        if (!cp)
+                return;
+
+        hci_dev_lock(hdev);
+
+        conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
+        if (conn && hci_outgoing_auth_needed(hdev, conn)) {
+                struct hci_cp_auth_requested cp;
+                cp.handle = __cpu_to_le16(conn->handle);
+                hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
+        }
+
+        hci_dev_unlock(hdev);
 }
 
 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
@@ -955,12 +996,14 @@ static inline void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *sk
 
                 hci_dev_lock(hdev);
 
-                if ((ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr)))
+                ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
+                if (ie)
                         memcpy(ie->data.dev_class, ev->dev_class, 3);
 
                 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
                 if (!conn) {
-                        if (!(conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr))) {
+                        conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr);
+                        if (!conn) {
                                 BT_ERR("No memory for new connection");
                                 hci_dev_unlock(hdev);
                                 return;
@@ -1090,9 +1133,23 @@ static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *s
 
 static inline void hci_remote_name_evt(struct hci_dev *hdev, struct sk_buff *skb)
 {
+        struct hci_ev_remote_name *ev = (void *) skb->data;
+        struct hci_conn *conn;
+
         BT_DBG("%s", hdev->name);
 
         hci_conn_check_pending(hdev);
+
+        hci_dev_lock(hdev);
+
+        conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
+        if (conn && hci_outgoing_auth_needed(hdev, conn)) {
+                struct hci_cp_auth_requested cp;
+                cp.handle = __cpu_to_le16(conn->handle);
+                hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
+        }
+
+        hci_dev_unlock(hdev);
 }
 
 static inline void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
@@ -1162,33 +1219,39 @@ static inline void hci_remote_features_evt(struct hci_dev *hdev, struct sk_buff
         hci_dev_lock(hdev);
 
         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
-        if (conn) {
-                if (!ev->status)
-                        memcpy(conn->features, ev->features, 8);
+        if (!conn)
+                goto unlock;
 
-                if (conn->state == BT_CONFIG) {
-                        if (!ev->status && lmp_ssp_capable(hdev) &&
-                                                lmp_ssp_capable(conn)) {
-                                struct hci_cp_read_remote_ext_features cp;
-                                cp.handle = ev->handle;
-                                cp.page = 0x01;
-                                hci_send_cmd(hdev,
-                                        HCI_OP_READ_REMOTE_EXT_FEATURES,
-                                                        sizeof(cp), &cp);
-                        } else if (!ev->status && conn->out &&
-                                        conn->sec_level == BT_SECURITY_HIGH) {
-                                struct hci_cp_auth_requested cp;
-                                cp.handle = ev->handle;
-                                hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
+        if (!ev->status)
+                memcpy(conn->features, ev->features, 8);
+
+        if (conn->state != BT_CONFIG)
+                goto unlock;
+
+        if (!ev->status && lmp_ssp_capable(hdev) && lmp_ssp_capable(conn)) {
+                struct hci_cp_read_remote_ext_features cp;
+                cp.handle = ev->handle;
+                cp.page = 0x01;
+                hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
                                                         sizeof(cp), &cp);
-                        } else {
-                                conn->state = BT_CONNECTED;
-                                hci_proto_connect_cfm(conn, ev->status);
-                                hci_conn_put(conn);
-                        }
-                }
+                goto unlock;
+        }
+
+        if (!ev->status) {
+                struct hci_cp_remote_name_req cp;
+                memset(&cp, 0, sizeof(cp));
+                bacpy(&cp.bdaddr, &conn->dst);
+                cp.pscan_rep_mode = 0x02;
+                hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
         }
 
+        if (!hci_outgoing_auth_needed(hdev, conn)) {
+                conn->state = BT_CONNECTED;
+                hci_proto_connect_cfm(conn, ev->status);
+                hci_conn_put(conn);
+        }
+
+unlock:
         hci_dev_unlock(hdev);
 }
 
@@ -1449,10 +1512,12 @@ static inline void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *s
                         conn->sent -= count;
 
                         if (conn->type == ACL_LINK) {
-                                if ((hdev->acl_cnt += count) > hdev->acl_pkts)
+                                hdev->acl_cnt += count;
+                                if (hdev->acl_cnt > hdev->acl_pkts)
                                         hdev->acl_cnt = hdev->acl_pkts;
                         } else {
-                                if ((hdev->sco_cnt += count) > hdev->sco_pkts)
+                                hdev->sco_cnt += count;
+                                if (hdev->sco_cnt > hdev->sco_pkts)
                                         hdev->sco_cnt = hdev->sco_pkts;
                         }
                 }
@@ -1547,7 +1612,8 @@ static inline void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *sk
         if (conn && !ev->status) {
                 struct inquiry_entry *ie;
 
-                if ((ie = hci_inquiry_cache_lookup(hdev, &conn->dst))) {
+                ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
+                if (ie) {
                         ie->data.clock_offset = ev->clock_offset;
                         ie->timestamp = jiffies;
                 }
@@ -1581,7 +1647,8 @@ static inline void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *
 
         hci_dev_lock(hdev);
 
-        if ((ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr))) {
+        ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
+        if (ie) {
                 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
                 ie->timestamp = jiffies;
         }
@@ -1646,32 +1713,37 @@ static inline void hci_remote_ext_features_evt(struct hci_dev *hdev, struct sk_b
         hci_dev_lock(hdev);
 
         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
-        if (conn) {
-                if (!ev->status && ev->page == 0x01) {
-                        struct inquiry_entry *ie;
+        if (!conn)
+                goto unlock;
 
-                        if ((ie = hci_inquiry_cache_lookup(hdev, &conn->dst)))
-                                ie->data.ssp_mode = (ev->features[0] & 0x01);
+        if (!ev->status && ev->page == 0x01) {
+                struct inquiry_entry *ie;
 
-                        conn->ssp_mode = (ev->features[0] & 0x01);
-                }
+                ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
+                if (ie)
+                        ie->data.ssp_mode = (ev->features[0] & 0x01);
 
-                if (conn->state == BT_CONFIG) {
-                        if (!ev->status && hdev->ssp_mode > 0 &&
-                                        conn->ssp_mode > 0 && conn->out &&
-                                        conn->sec_level != BT_SECURITY_SDP) {
-                                struct hci_cp_auth_requested cp;
-                                cp.handle = ev->handle;
-                                hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
-                                                        sizeof(cp), &cp);
-                        } else {
-                                conn->state = BT_CONNECTED;
-                                hci_proto_connect_cfm(conn, ev->status);
-                                hci_conn_put(conn);
-                        }
-                }
+                conn->ssp_mode = (ev->features[0] & 0x01);
         }
 
+        if (conn->state != BT_CONFIG)
+                goto unlock;
+
+        if (!ev->status) {
+                struct hci_cp_remote_name_req cp;
+                memset(&cp, 0, sizeof(cp));
+                bacpy(&cp.bdaddr, &conn->dst);
+                cp.pscan_rep_mode = 0x02;
+                hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
+        }
+
+        if (!hci_outgoing_auth_needed(hdev, conn)) {
+                conn->state = BT_CONNECTED;
+                hci_proto_connect_cfm(conn, ev->status);
+                hci_conn_put(conn);
+        }
+
+unlock:
         hci_dev_unlock(hdev);
 }
 
@@ -1821,7 +1893,8 @@ static inline void hci_remote_host_features_evt(struct hci_dev *hdev, struct sk_
 
         hci_dev_lock(hdev);
 
-        if ((ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr)))
+        ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
+        if (ie)
                 ie->data.ssp_mode = (ev->features[0] & 0x01);
 
         hci_dev_unlock(hdev);
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 83acd164d39e..b3753bad2a55 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -43,7 +43,7 @@
 #include <net/sock.h>
 
 #include <asm/system.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/unaligned.h>
 
 #include <net/bluetooth/bluetooth.h>
@@ -125,7 +125,8 @@ void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb)
                                 continue;
                 }
 
-                if (!(nskb = skb_clone(skb, GFP_ATOMIC)))
+                nskb = skb_clone(skb, GFP_ATOMIC);
+                if (!nskb)
                         continue;
 
                 /* Put type byte before the data */
@@ -370,7 +371,8 @@ static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_le
         }
 
         if (haddr->hci_dev != HCI_DEV_NONE) {
-                if (!(hdev = hci_dev_get(haddr->hci_dev))) {
+                hdev = hci_dev_get(haddr->hci_dev);
+                if (!hdev) {
                         err = -ENODEV;
                         goto done;
                 }
@@ -457,7 +459,8 @@ static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
         if (sk->sk_state == BT_CLOSED)
                 return 0;
 
-        if (!(skb = skb_recv_datagram(sk, flags, noblock, &err)))
+        skb = skb_recv_datagram(sk, flags, noblock, &err);
+        if (!skb)
                 return err;
 
         msg->msg_namelen = 0;
@@ -499,7 +502,8 @@ static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
 
         lock_sock(sk);
 
-        if (!(hdev = hci_pi(sk)->hdev)) {
+        hdev = hci_pi(sk)->hdev;
+        if (!hdev) {
                 err = -EBADFD;
                 goto done;
         }
@@ -509,7 +513,8 @@ static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
                 goto done;
         }
 
-        if (!(skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err)))
+        skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err);
+        if (!skb)
                 goto done;
 
         if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index c0ee8b3928ed..29544c21f4b5 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -107,6 +107,7 @@ static void __hidp_unlink_session(struct hidp_session *session)
 
 static void __hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci)
 {
+        memset(ci, 0, sizeof(*ci));
         bacpy(&ci->bdaddr, &session->bdaddr);
 
         ci->flags = session->flags;
@@ -115,7 +116,6 @@ static void __hidp_copy_session(struct hidp_session *session, struct hidp_connin
         ci->vendor  = 0x0000;
         ci->product = 0x0000;
         ci->version = 0x0000;
-        memset(ci->name, 0, 128);
 
         if (session->input) {
                 ci->vendor  = session->input->id.vendor;
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index cd8f6ea03841..c12eccfdfe01 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -57,7 +57,7 @@
 
 #define VERSION "2.15"
 
-static int disable_ertm = 0;
+static int disable_ertm;
 
 static u32 l2cap_feat_mask = L2CAP_FEAT_FIXED_CHAN;
 static u8 l2cap_fixed_chan[8] = { 0x02, };
@@ -83,6 +83,18 @@ static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
 static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb);
 
 /* ---- L2CAP timers ---- */
+static void l2cap_sock_set_timer(struct sock *sk, long timeout)
+{
+        BT_DBG("sk %p state %d timeout %ld", sk, sk->sk_state, timeout);
+        sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout);
+}
+
+static void l2cap_sock_clear_timer(struct sock *sk)
+{
+        BT_DBG("sock %p state %d", sk, sk->sk_state);
+        sk_stop_timer(sk, &sk->sk_timer);
+}
+
 static void l2cap_sock_timeout(unsigned long arg)
 {
         struct sock *sk = (struct sock *) arg;
@@ -92,6 +104,14 @@ static void l2cap_sock_timeout(unsigned long arg)
 
         bh_lock_sock(sk);
 
+        if (sock_owned_by_user(sk)) {
+                /* sk is owned by user. Try again later */
+                l2cap_sock_set_timer(sk, HZ / 5);
+                bh_unlock_sock(sk);
+                sock_put(sk);
+                return;
+        }
+
         if (sk->sk_state == BT_CONNECTED || sk->sk_state == BT_CONFIG)
                 reason = ECONNREFUSED;
         else if (sk->sk_state == BT_CONNECT &&
@@ -108,18 +128,6 @@ static void l2cap_sock_timeout(unsigned long arg)
         sock_put(sk);
 }
 
-static void l2cap_sock_set_timer(struct sock *sk, long timeout)
-{
-        BT_DBG("sk %p state %d timeout %ld", sk, sk->sk_state, timeout);
-        sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout);
-}
-
-static void l2cap_sock_clear_timer(struct sock *sk)
-{
-        BT_DBG("sock %p state %d", sk, sk->sk_state);
-        sk_stop_timer(sk, &sk->sk_timer);
-}
-
 /* ---- L2CAP channels ---- */
 static struct sock *__l2cap_get_chan_by_dcid(struct l2cap_chan_list *l, u16 cid)
 {
@@ -743,11 +751,13 @@ found:
 /* Find socket with psm and source bdaddr.
  * Returns closest match.
  */
-static struct sock *__l2cap_get_sock_by_psm(int state, __le16 psm, bdaddr_t *src)
+static struct sock *l2cap_get_sock_by_psm(int state, __le16 psm, bdaddr_t *src)
 {
         struct sock *sk = NULL, *sk1 = NULL;
         struct hlist_node *node;
 
+        read_lock(&l2cap_sk_list.lock);
+
         sk_for_each(sk, node, &l2cap_sk_list.head) {
                 if (state && sk->sk_state != state)
                         continue;
@@ -762,20 +772,10 @@ static struct sock *__l2cap_get_sock_by_psm(int state, __le16 psm, bdaddr_t *src
                                 sk1 = sk;
                 }
         }
-        return node ? sk : sk1;
-}
 
-/* Find socket with given address (psm, src).
- * Returns locked socket */
-static inline struct sock *l2cap_get_sock_by_psm(int state, __le16 psm, bdaddr_t *src)
-{
-        struct sock *s;
-        read_lock(&l2cap_sk_list.lock);
-        s = __l2cap_get_sock_by_psm(state, psm, src);
-        if (s)
-                bh_lock_sock(s);
         read_unlock(&l2cap_sk_list.lock);
-        return s;
+
+        return node ? sk : sk1;
 }
 
 static void l2cap_sock_destruct(struct sock *sk)
@@ -2926,6 +2926,8 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
                 goto sendresp;
         }
 
+        bh_lock_sock(parent);
+
         /* Check if the ACL is secure enough (if not SDP) */
         if (psm != cpu_to_le16(0x0001) &&
                                 !hci_conn_check_link_mode(conn->hcon)) {
@@ -3078,6 +3080,14 @@ static inline int l2cap_connect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hd
                 break;
 
         default:
+                /* don't delete l2cap channel if sk is owned by user */
+                if (sock_owned_by_user(sk)) {
+                        sk->sk_state = BT_DISCONN;
+                        l2cap_sock_clear_timer(sk);
+                        l2cap_sock_set_timer(sk, HZ / 5);
+                        break;
+                }
+
                 l2cap_chan_del(sk, ECONNREFUSED);
                 break;
         }
@@ -3283,6 +3293,15 @@ static inline int l2cap_disconnect_req(struct l2cap_conn *conn, struct l2cap_cmd
 
         sk->sk_shutdown = SHUTDOWN_MASK;
 
+        /* don't delete l2cap channel if sk is owned by user */
+        if (sock_owned_by_user(sk)) {
+                sk->sk_state = BT_DISCONN;
+                l2cap_sock_clear_timer(sk);
+                l2cap_sock_set_timer(sk, HZ / 5);
+                bh_unlock_sock(sk);
+                return 0;
+        }
+
         l2cap_chan_del(sk, ECONNRESET);
         bh_unlock_sock(sk);
 
@@ -3305,6 +3324,15 @@ static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn, struct l2cap_cmd
         if (!sk)
                 return 0;
 
+        /* don't delete l2cap channel if sk is owned by user */
+        if (sock_owned_by_user(sk)) {
+                sk->sk_state = BT_DISCONN;
+                l2cap_sock_clear_timer(sk);
+                l2cap_sock_set_timer(sk, HZ / 5);
+                bh_unlock_sock(sk);
+                return 0;
+        }
+
         l2cap_chan_del(sk, 0);
         bh_unlock_sock(sk);
 
@@ -4134,11 +4162,10 @@ static inline void l2cap_data_channel_rrframe(struct sock *sk, u16 rx_control)
                         __mod_retrans_timer();
 
                 pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
-                if (pi->conn_state & L2CAP_CONN_SREJ_SENT) {
+                if (pi->conn_state & L2CAP_CONN_SREJ_SENT)
                         l2cap_send_ack(pi);
-                } else {
+                else
                         l2cap_ertm_send(sk);
-                }
         }
 }
 
@@ -4430,6 +4457,8 @@ static inline int l2cap_conless_channel(struct l2cap_conn *conn, __le16 psm, str
         if (!sk)
                 goto drop;
 
+        bh_lock_sock(sk);
+
         BT_DBG("sk %p, len %d", sk, skb->len);
 
         if (sk->sk_state != BT_BOUND && sk->sk_state != BT_CONNECTED)
@@ -4841,8 +4870,10 @@ static int __init l2cap_init(void)
                 return err;
 
         _busy_wq = create_singlethread_workqueue("l2cap");
-        if (!_busy_wq)
-                goto error;
+        if (!_busy_wq) {
+                proto_unregister(&l2cap_proto);
+                return -ENOMEM;
+        }
 
         err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops);
         if (err < 0) {
@@ -4870,6 +4901,7 @@ static int __init l2cap_init(void)
         return 0;
 
 error:
+        destroy_workqueue(_busy_wq);
         proto_unregister(&l2cap_proto);
         return err;
 }
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 432a9a633e8d..ff8aaa736650 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -41,7 +41,7 @@
 #include <linux/slab.h>
 
 #include <net/sock.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/unaligned.h>
 
 #include <net/bluetooth/bluetooth.h>
@@ -51,10 +51,10 @@
 
 #define VERSION "1.11"
 
-static int disable_cfc = 0;
+static int disable_cfc;
+static int l2cap_ertm;
 static int channel_mtu = -1;
 static unsigned int l2cap_mtu = RFCOMM_MAX_L2CAP_MTU;
-static int l2cap_ertm = 0;
 
 static struct task_struct *rfcomm_thread;
 
@@ -1902,7 +1902,7 @@ static inline void rfcomm_check_connection(struct rfcomm_session *s)
 
         BT_DBG("%p state %ld", s, s->state);
 
-        switch(sk->sk_state) {
+        switch (sk->sk_state) {
         case BT_CONNECTED:
                 s->state = BT_CONNECT;
 
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index aec505f934df..66cc1f0c3df8 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -45,7 +45,7 @@
 #include <net/sock.h>
 
 #include <asm/system.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
@@ -140,11 +140,13 @@ static struct sock *__rfcomm_get_sock_by_addr(u8 channel, bdaddr_t *src)
 /* Find socket with channel and source bdaddr.
  * Returns closest match.
  */
-static struct sock *__rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src)
+static struct sock *rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src)
 {
         struct sock *sk = NULL, *sk1 = NULL;
         struct hlist_node *node;
 
+        read_lock(&rfcomm_sk_list.lock);
+
         sk_for_each(sk, node, &rfcomm_sk_list.head) {
                 if (state && sk->sk_state != state)
                         continue;
@@ -159,19 +161,10 @@ static struct sock *__rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t
                                 sk1 = sk;
                 }
         }
-        return node ? sk : sk1;
-}
 
-/* Find socket with given address (channel, src).
- * Returns locked socket */
-static inline struct sock *rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src)
-{
-        struct sock *s;
-        read_lock(&rfcomm_sk_list.lock);
-        s = __rfcomm_get_sock_by_channel(state, channel, src);
-        if (s) bh_lock_sock(s);
         read_unlock(&rfcomm_sk_list.lock);
-        return s;
+
+        return node ? sk : sk1;
 }
 
 static void rfcomm_sock_destruct(struct sock *sk)
@@ -895,7 +888,8 @@ static int rfcomm_sock_shutdown(struct socket *sock, int how)
 
         BT_DBG("sock %p, sk %p", sock, sk);
 
-        if (!sk) return 0;
+        if (!sk)
+                return 0;
 
         lock_sock(sk);
         if (!sk->sk_shutdown) {
@@ -945,6 +939,8 @@ int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc *
         if (!parent)
                 return 0;
 
+        bh_lock_sock(parent);
+
         /* Check for backlog size */
         if (sk_acceptq_is_full(parent)) {
                 BT_DBG("backlog full %d", parent->sk_ack_backlog);
diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
index a9b81f5dacd1..2575c2db6404 100644
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -58,9 +58,9 @@ struct rfcomm_dev {
 
         bdaddr_t                src;
         bdaddr_t                dst;
-        u8                      channel;
+        u8                      channel;
 
-        uint                    modem_status;
+        uint                    modem_status;
 
         struct rfcomm_dlc       *dlc;
         struct tty_struct       *tty;
@@ -69,7 +69,7 @@ struct rfcomm_dev {
 
         struct device           *tty_dev;
 
-        atomic_t                wmem_alloc;
+        atomic_t                wmem_alloc;
 
         struct sk_buff_head     pending;
 };
@@ -431,7 +431,8 @@ static int rfcomm_release_dev(void __user *arg)
 
         BT_DBG("dev_id %d flags 0x%x", req.dev_id, req.flags);
 
-        if (!(dev = rfcomm_dev_get(req.dev_id)))
+        dev = rfcomm_dev_get(req.dev_id);
+        if (!dev)
                 return -ENODEV;
 
         if (dev->flags != NOCAP_FLAGS && !capable(CAP_NET_ADMIN)) {
@@ -470,7 +471,8 @@ static int rfcomm_get_dev_list(void __user *arg)
 
         size = sizeof(*dl) + dev_num * sizeof(*di);
 
-        if (!(dl = kmalloc(size, GFP_KERNEL)))
+        dl = kmalloc(size, GFP_KERNEL);
+        if (!dl)
                 return -ENOMEM;
 
         di = dl->dev_info;
@@ -513,7 +515,8 @@ static int rfcomm_get_dev_info(void __user *arg)
         if (copy_from_user(&di, arg, sizeof(di)))
                 return -EFAULT;
 
-        if (!(dev = rfcomm_dev_get(di.id)))
+        dev = rfcomm_dev_get(di.id);
+        if (!dev)
                 return -ENODEV;
 
         di.flags   = dev->flags;
@@ -561,7 +564,8 @@ static void rfcomm_dev_data_ready(struct rfcomm_dlc *dlc, struct sk_buff *skb)
                 return;
         }
 
-        if (!(tty = dev->tty) || !skb_queue_empty(&dev->pending)) {
+        tty = dev->tty;
+        if (!tty || !skb_queue_empty(&dev->pending)) {
                 skb_queue_tail(&dev->pending, skb);
                 return;
         }
@@ -796,7 +800,8 @@ static int rfcomm_tty_write(struct tty_struct *tty, const unsigned char *buf, in
 
                 memcpy(skb_put(skb, size), buf + sent, size);
 
-                if ((err = rfcomm_dlc_send(dlc, skb)) < 0) {
+                err = rfcomm_dlc_send(dlc, skb);
+                if (err < 0) {
                         kfree_skb(skb);
                         break;
                 }
@@ -892,7 +897,7 @@ static void rfcomm_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
 
         /* Parity on/off and when on, odd/even */
         if (((old->c_cflag & PARENB) != (new->c_cflag & PARENB)) ||
-                        ((old->c_cflag & PARODD) != (new->c_cflag & PARODD)) ) {
+                        ((old->c_cflag & PARODD) != (new->c_cflag & PARODD))) {
                 changes |= RFCOMM_RPN_PM_PARITY;
                 BT_DBG("Parity change detected.");
         }
@@ -937,11 +942,10 @@ static void rfcomm_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
         /* POSIX does not support 1.5 stop bits and RFCOMM does not
          * support 2 stop bits. So a request for 2 stop bits gets
          * translated to 1.5 stop bits */
-        if (new->c_cflag & CSTOPB) {
+        if (new->c_cflag & CSTOPB)
                 stop_bits = RFCOMM_RPN_STOP_15;
-        } else {
+        else
                 stop_bits = RFCOMM_RPN_STOP_1;
-        }
 
         /* Handle number of data bits [5-8] */
         if ((old->c_cflag & CSIZE) != (new->c_cflag & CSIZE))
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 66b9e5c0523a..960c6d1637da 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -44,7 +44,7 @@
 #include <net/sock.h>
 
 #include <asm/system.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
@@ -52,7 +52,7 @@
 
 #define VERSION "0.6"
 
-static int disable_esco = 0;
+static int disable_esco;
 
 static const struct proto_ops sco_sock_ops;
 
@@ -138,16 +138,17 @@ static inline struct sock *sco_chan_get(struct sco_conn *conn)
 
 static int sco_conn_del(struct hci_conn *hcon, int err)
 {
-        struct sco_conn *conn;
+        struct sco_conn *conn = hcon->sco_data;
         struct sock *sk;
 
-        if (!(conn = hcon->sco_data))
+        if (!conn)
                 return 0;
 
         BT_DBG("hcon %p conn %p, err %d", hcon, conn, err);
 
         /* Kill socket */
-        if ((sk = sco_chan_get(conn))) {
+        sk = sco_chan_get(conn);
+        if (sk) {
                 bh_lock_sock(sk);
                 sco_sock_clear_timer(sk);
                 sco_chan_del(sk, err);
@@ -185,7 +186,8 @@ static int sco_connect(struct sock *sk)
 
         BT_DBG("%s -> %s", batostr(src), batostr(dst));
 
-        if (!(hdev = hci_get_route(dst, src)))
+        hdev = hci_get_route(dst, src);
+        if (!hdev)
                 return -EHOSTUNREACH;
 
         hci_dev_lock_bh(hdev);
@@ -510,7 +512,8 @@ static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen
         /* Set destination address and psm */
         bacpy(&bt_sk(sk)->dst, &sa->sco_bdaddr);
 
-        if ((err = sco_connect(sk)))
+        err = sco_connect(sk);
+        if (err)
                 goto done;
 
         err = bt_sock_wait_state(sk, BT_CONNECTED,
@@ -828,13 +831,14 @@ static void sco_chan_del(struct sock *sk, int err)
 
 static void sco_conn_ready(struct sco_conn *conn)
 {
-        struct sock *parent, *sk;
+        struct sock *parent;
+        struct sock *sk = conn->sk;
 
         BT_DBG("conn %p", conn);
 
         sco_conn_lock(conn);
 
-        if ((sk = conn->sk)) {
+        if (sk) {
                 sco_sock_clear_timer(sk);
                 bh_lock_sock(sk);
                 sk->sk_state = BT_CONNECTED;
diff --git a/net/bridge/br.c b/net/bridge/br.c
index c8436fa31344..84bbb82599b2 100644
--- a/net/bridge/br.c
+++ b/net/bridge/br.c
@@ -22,8 +22,6 @@
 
 #include "br_private.h"
 
-int (*br_should_route_hook)(struct sk_buff *skb);
-
 static const struct stp_proto br_stp_proto = {
         .rcv    = br_stp_rcv,
 };
@@ -102,8 +100,6 @@ static void __exit br_deinit(void)
         br_fdb_fini();
 }
 
-EXPORT_SYMBOL(br_should_route_hook);
-
 module_init(br_init)
 module_exit(br_deinit)
 MODULE_LICENSE("GPL");
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 17cb0b633576..556443566e9c 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -141,7 +141,7 @@ static int br_change_mtu(struct net_device *dev, int new_mtu)
 
 #ifdef CONFIG_BRIDGE_NETFILTER
         /* remember the MTU in the rtable for PMTU */
-        br->fake_rtable.dst.metrics[RTAX_MTU - 1] = new_mtu;
+        dst_metric_set(&br->fake_rtable.dst, RTAX_MTU, new_mtu);
 #endif
 
         return 0;
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 90512ccfd3e9..2872393b2939 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -238,15 +238,18 @@ struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr)
 {
         struct net_bridge_fdb_entry *fdb;
+        struct net_bridge_port *port;
         int ret;
 
-        if (!br_port_exists(dev))
-                return 0;
-
         rcu_read_lock();
-        fdb = __br_fdb_get(br_port_get_rcu(dev)->br, addr);
-        ret = fdb && fdb->dst->dev != dev &&
-                fdb->dst->state == BR_STATE_FORWARDING;
+        port = br_port_get_rcu(dev);
+        if (!port)
+                ret = 0;
+        else {
+                fdb = __br_fdb_get(port->br, addr);
+                ret = fdb && fdb->dst->dev != dev &&
+                        fdb->dst->state == BR_STATE_FORWARDING;
+        }
         rcu_read_unlock();
 
         return ret;
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index cbfe87f0f34a..2bd11ec6d166 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -223,7 +223,7 @@ static void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
         struct net_bridge_port_group *p;
         struct hlist_node *rp;
 
-        rp = rcu_dereference(br->router_list.first);
+        rp = rcu_dereference(hlist_first_rcu(&br->router_list));
         p = mdst ? rcu_dereference(mdst->ports) : NULL;
         while (p || rp) {
                 struct net_bridge_port *port, *lport, *rport;
@@ -242,7 +242,7 @@ static void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
                 if ((unsigned long)lport >= (unsigned long)port)
                         p = rcu_dereference(p->next);
                 if ((unsigned long)rport >= (unsigned long)port)
-                        rp = rcu_dereference(rp->next);
+                        rp = rcu_dereference(hlist_next_rcu(rp));
         }
 
         if (!prev)
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 89ad25a76202..d9d1e2bac1d6 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -475,11 +475,8 @@ int br_del_if(struct net_bridge *br, struct net_device *dev)
 {
         struct net_bridge_port *p;
 
-        if (!br_port_exists(dev))
-                return -EINVAL;
-
-        p = br_port_get(dev);
-        if (p->br != br)
+        p = br_port_get_rtnl(dev);
+        if (!p || p->br != br)
                 return -EINVAL;
 
         del_nbp(p);
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index 25207a1f182b..6f6d8e1b776f 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -21,6 +21,10 @@
 /* Bridge group multicast address 802.1d (pg 51). */
 const u8 br_group_address[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
 
+/* Hook for brouter */
+br_should_route_hook_t __rcu *br_should_route_hook __read_mostly;
+EXPORT_SYMBOL(br_should_route_hook);
+
 static int br_pass_frame_up(struct sk_buff *skb)
 {
         struct net_device *indev, *brdev = BR_INPUT_SKB_CB(skb)->brdev;
@@ -139,7 +143,7 @@ struct sk_buff *br_handle_frame(struct sk_buff *skb)
 {
         struct net_bridge_port *p;
         const unsigned char *dest = eth_hdr(skb)->h_dest;
-        int (*rhook)(struct sk_buff *skb);
+        br_should_route_hook_t *rhook;
 
         if (unlikely(skb->pkt_type == PACKET_LOOPBACK))
                 return skb;
@@ -173,8 +177,8 @@ forward:
         switch (p->state) {
         case BR_STATE_FORWARDING:
                 rhook = rcu_dereference(br_should_route_hook);
-                if (rhook != NULL) {
-                        if (rhook(skb))
+                if (rhook) {
+                        if ((*rhook)(skb))
                                 return skb;
                         dest = eth_hdr(skb)->h_dest;
                 }
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index f19e347f56f6..f03e2e98cd44 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -33,6 +33,9 @@
 
 #include "br_private.h"
 
+#define mlock_dereference(X, br) \
+        rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
+
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 static inline int ipv6_is_local_multicast(const struct in6_addr *addr)
 {
@@ -135,7 +138,7 @@ static struct net_bridge_mdb_entry *br_mdb_ip6_get(
 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
                                         struct sk_buff *skb)
 {
-        struct net_bridge_mdb_htable *mdb = br->mdb;
+        struct net_bridge_mdb_htable *mdb = rcu_dereference(br->mdb);
         struct br_ip ip;
 
         if (br->multicast_disabled)
@@ -235,7 +238,8 @@ static void br_multicast_group_expired(unsigned long data)
         if (mp->ports)
                 goto out;
 
-        mdb = br->mdb;
+        mdb = mlock_dereference(br->mdb, br);
+
         hlist_del_rcu(&mp->hlist[mdb->ver]);
         mdb->size--;
 
@@ -249,16 +253,20 @@ out:
 static void br_multicast_del_pg(struct net_bridge *br,
                                 struct net_bridge_port_group *pg)
 {
-        struct net_bridge_mdb_htable *mdb = br->mdb;
+        struct net_bridge_mdb_htable *mdb;
         struct net_bridge_mdb_entry *mp;
         struct net_bridge_port_group *p;
-        struct net_bridge_port_group **pp;
+        struct net_bridge_port_group __rcu **pp;
+
+        mdb = mlock_dereference(br->mdb, br);
 
         mp = br_mdb_ip_get(mdb, &pg->addr);
         if (WARN_ON(!mp))
                 return;
 
-        for (pp = &mp->ports; (p = *pp); pp = &p->next) {
+        for (pp = &mp->ports;
+             (p = mlock_dereference(*pp, br)) != NULL;
+             pp = &p->next) {
                 if (p != pg)
                         continue;
 
@@ -294,10 +302,10 @@ out:
         spin_unlock(&br->multicast_lock);
 }
 
-static int br_mdb_rehash(struct net_bridge_mdb_htable **mdbp, int max,
+static int br_mdb_rehash(struct net_bridge_mdb_htable __rcu **mdbp, int max,
                          int elasticity)
 {
-        struct net_bridge_mdb_htable *old = *mdbp;
+        struct net_bridge_mdb_htable *old = rcu_dereference_protected(*mdbp, 1);
         struct net_bridge_mdb_htable *mdb;
         int err;
 
@@ -569,7 +577,7 @@ static struct net_bridge_mdb_entry *br_multicast_get_group(
         struct net_bridge *br, struct net_bridge_port *port,
         struct br_ip *group, int hash)
 {
-        struct net_bridge_mdb_htable *mdb = br->mdb;
+        struct net_bridge_mdb_htable *mdb;
         struct net_bridge_mdb_entry *mp;
         struct hlist_node *p;
         unsigned count = 0;
@@ -577,6 +585,7 @@ static struct net_bridge_mdb_entry *br_multicast_get_group(
         int elasticity;
         int err;
 
+        mdb = rcu_dereference_protected(br->mdb, 1);
         hlist_for_each_entry(mp, p, &mdb->mhash[hash], hlist[mdb->ver]) {
                 count++;
                 if (unlikely(br_ip_equal(group, &mp->addr)))
@@ -642,13 +651,16 @@ static struct net_bridge_mdb_entry *br_multicast_new_group(
         struct net_bridge *br, struct net_bridge_port *port,
         struct br_ip *group)
 {
-        struct net_bridge_mdb_htable *mdb = br->mdb;
+        struct net_bridge_mdb_htable *mdb;
         struct net_bridge_mdb_entry *mp;
         int hash;
+        int err;
 
+        mdb = rcu_dereference_protected(br->mdb, 1);
         if (!mdb) {
-                if (br_mdb_rehash(&br->mdb, BR_HASH_SIZE, 0))
-                        return NULL;
+                err = br_mdb_rehash(&br->mdb, BR_HASH_SIZE, 0);
+                if (err)
+                        return ERR_PTR(err);
                 goto rehash;
         }
 
@@ -660,7 +672,7 @@ static struct net_bridge_mdb_entry *br_multicast_new_group(
 
         case -EAGAIN:
 rehash:
-                mdb = br->mdb;
+                mdb = rcu_dereference_protected(br->mdb, 1);
                 hash = br_ip_hash(mdb, group);
                 break;
 
@@ -670,7 +682,7 @@ rehash:
 
         mp = kzalloc(sizeof(*mp), GFP_ATOMIC);
         if (unlikely(!mp))
-                goto out;
+                return ERR_PTR(-ENOMEM);
 
         mp->br = br;
         mp->addr = *group;
@@ -692,7 +704,7 @@ static int br_multicast_add_group(struct net_bridge *br,
 {
         struct net_bridge_mdb_entry *mp;
         struct net_bridge_port_group *p;
-        struct net_bridge_port_group **pp;
+        struct net_bridge_port_group __rcu **pp;
         unsigned long now = jiffies;
         int err;
 
@@ -703,7 +715,7 @@ static int br_multicast_add_group(struct net_bridge *br,
 
         mp = br_multicast_new_group(br, port, group);
         err = PTR_ERR(mp);
-        if (unlikely(IS_ERR(mp) || !mp))
+        if (IS_ERR(mp))
                 goto err;
 
         if (!port) {
@@ -712,7 +724,9 @@ static int br_multicast_add_group(struct net_bridge *br,
                 goto out;
         }
 
-        for (pp = &mp->ports; (p = *pp); pp = &p->next) {
+        for (pp = &mp->ports;
+             (p = mlock_dereference(*pp, br)) != NULL;
+             pp = &p->next) {
                 if (p->port == port)
                         goto found;
                 if ((unsigned long)p->port < (unsigned long)port)
@@ -1106,7 +1120,7 @@ static int br_ip4_multicast_query(struct net_bridge *br,
         struct net_bridge_mdb_entry *mp;
         struct igmpv3_query *ih3;
         struct net_bridge_port_group *p;
-        struct net_bridge_port_group **pp;
+        struct net_bridge_port_group __rcu **pp;
         unsigned long max_delay;
         unsigned long now = jiffies;
         __be32 group;
@@ -1145,7 +1159,7 @@ static int br_ip4_multicast_query(struct net_bridge *br,
         if (!group)
                 goto out;
 
-        mp = br_mdb_ip4_get(br->mdb, group);
+        mp = br_mdb_ip4_get(mlock_dereference(br->mdb, br), group);
         if (!mp)
                 goto out;
 
@@ -1157,7 +1171,9 @@ static int br_ip4_multicast_query(struct net_bridge *br,
              try_to_del_timer_sync(&mp->timer) >= 0))
                 mod_timer(&mp->timer, now + max_delay);
 
-        for (pp = &mp->ports; (p = *pp); pp = &p->next) {
+        for (pp = &mp->ports;
+             (p = mlock_dereference(*pp, br)) != NULL;
+             pp = &p->next) {
                 if (timer_pending(&p->timer) ?
                     time_after(p->timer.expires, now + max_delay) :
                     try_to_del_timer_sync(&p->timer) >= 0)
@@ -1178,7 +1194,8 @@ static int br_ip6_multicast_query(struct net_bridge *br,
         struct mld_msg *mld = (struct mld_msg *) icmp6_hdr(skb);
         struct net_bridge_mdb_entry *mp;
         struct mld2_query *mld2q;
-        struct net_bridge_port_group *p, **pp;
+        struct net_bridge_port_group *p;
+        struct net_bridge_port_group __rcu **pp;
         unsigned long max_delay;
         unsigned long now = jiffies;
         struct in6_addr *group = NULL;
@@ -1214,7 +1231,7 @@ static int br_ip6_multicast_query(struct net_bridge *br,
         if (!group)
                 goto out;
 
-        mp = br_mdb_ip6_get(br->mdb, group);
+        mp = br_mdb_ip6_get(mlock_dereference(br->mdb, br), group);
         if (!mp)
                 goto out;
 
@@ -1225,7 +1242,9 @@ static int br_ip6_multicast_query(struct net_bridge *br,
              try_to_del_timer_sync(&mp->timer) >= 0))
                 mod_timer(&mp->timer, now + max_delay);
 
-        for (pp = &mp->ports; (p = *pp); pp = &p->next) {
+        for (pp = &mp->ports;
+             (p = mlock_dereference(*pp, br)) != NULL;
+             pp = &p->next) {
                 if (timer_pending(&p->timer) ?
                     time_after(p->timer.expires, now + max_delay) :
                     try_to_del_timer_sync(&p->timer) >= 0)
@@ -1254,7 +1273,7 @@ static void br_multicast_leave_group(struct net_bridge *br,
             timer_pending(&br->multicast_querier_timer))
                 goto out;
 
-        mdb = br->mdb;
+        mdb = mlock_dereference(br->mdb, br);
         mp = br_mdb_ip_get(mdb, group);
         if (!mp)
                 goto out;
@@ -1277,7 +1296,9 @@ static void br_multicast_leave_group(struct net_bridge *br,
                 goto out;
         }
 
-        for (p = mp->ports; p; p = p->next) {
+        for (p = mlock_dereference(mp->ports, br);
+             p != NULL;
+             p = mlock_dereference(p->next, br)) {
                 if (p->port != port)
                         continue;
 
@@ -1625,7 +1646,7 @@ void br_multicast_stop(struct net_bridge *br)
         del_timer_sync(&br->multicast_query_timer);
 
         spin_lock_bh(&br->multicast_lock);
-        mdb = br->mdb;
+        mdb = mlock_dereference(br->mdb, br);
         if (!mdb)
                 goto out;
 
@@ -1729,6 +1750,7 @@ int br_multicast_toggle(struct net_bridge *br, unsigned long val)
 {
         struct net_bridge_port *port;
         int err = 0;
+        struct net_bridge_mdb_htable *mdb;
 
         spin_lock(&br->multicast_lock);
         if (br->multicast_disabled == !val)
@@ -1741,15 +1763,16 @@ int br_multicast_toggle(struct net_bridge *br, unsigned long val)
         if (!netif_running(br->dev))
                 goto unlock;
 
-        if (br->mdb) {
-                if (br->mdb->old) {
+        mdb = mlock_dereference(br->mdb, br);
+        if (mdb) {
+                if (mdb->old) {
                         err = -EEXIST;
 rollback:
                         br->multicast_disabled = !!val;
                         goto unlock;
                 }
 
-                err = br_mdb_rehash(&br->mdb, br->mdb->max,
+                err = br_mdb_rehash(&br->mdb, mdb->max,
                                     br->hash_elasticity);
                 if (err)
                         goto rollback;
@@ -1774,6 +1797,7 @@ int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val)
 {
         int err = -ENOENT;
         u32 old;
+        struct net_bridge_mdb_htable *mdb;
 
         spin_lock(&br->multicast_lock);
         if (!netif_running(br->dev))
@@ -1782,7 +1806,9 @@ int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val)
         err = -EINVAL;
         if (!is_power_of_2(val))
                 goto unlock;
-        if (br->mdb && val < br->mdb->size)
+
+        mdb = mlock_dereference(br->mdb, br);
+        if (mdb && val < mdb->size)
                 goto unlock;
 
         err = 0;
@@ -1790,8 +1816,8 @@ int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val)
         old = br->hash_max;
         br->hash_max = val;
 
-        if (br->mdb) {
-                if (br->mdb->old) {
+        if (mdb) {
+                if (mdb->old) {
                         err = -EEXIST;
 rollback:
                         br->hash_max = old;
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index 865fd7634b67..4b5b66d07bba 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -124,24 +124,25 @@ void br_netfilter_rtable_init(struct net_bridge *br)
         atomic_set(&rt->dst.__refcnt, 1);
         rt->dst.dev = br->dev;
         rt->dst.path = &rt->dst;
-        rt->dst.metrics[RTAX_MTU - 1] = 1500;
+        dst_metric_set(&rt->dst, RTAX_MTU, 1500);
         rt->dst.flags   = DST_NOXFRM;
         rt->dst.ops = &fake_dst_ops;
 }
 
 static inline struct rtable *bridge_parent_rtable(const struct net_device *dev)
 {
-        if (!br_port_exists(dev))
-                return NULL;
-        return &br_port_get_rcu(dev)->br->fake_rtable;
+        struct net_bridge_port *port;
+
+        port = br_port_get_rcu(dev);
+        return port ? &port->br->fake_rtable : NULL;
 }
 
 static inline struct net_device *bridge_parent(const struct net_device *dev)
 {
-        if (!br_port_exists(dev))
-                return NULL;
+        struct net_bridge_port *port;
 
-        return br_port_get_rcu(dev)->br->dev;
+        port = br_port_get_rcu(dev);
+        return port ? port->br->dev : NULL;
 }
 
 static inline struct nf_bridge_info *nf_bridge_alloc(struct sk_buff *skb)
@@ -412,13 +413,8 @@ static int br_nf_pre_routing_finish(struct sk_buff *skb)
         if (dnat_took_place(skb)) {
                 if ((err = ip_route_input(skb, iph->daddr, iph->saddr, iph->tos, dev))) {
                         struct flowi fl = {
-                                .nl_u = {
-                                        .ip4_u = {
-                                                 .daddr = iph->daddr,
-                                                 .saddr = 0,
-                                                 .tos = RT_TOS(iph->tos) },
-                                },
-                                .proto = 0,
+                                .fl4_dst = iph->daddr,
+                                .fl4_tos = RT_TOS(iph->tos),
                         };
                         struct in_device *in_dev = __in_dev_get_rcu(dev);
 
@@ -566,26 +562,26 @@ static unsigned int br_nf_pre_routing_ipv6(unsigned int hook,
         u32 pkt_len;
 
         if (skb->len < sizeof(struct ipv6hdr))
-                goto inhdr_error;
+                return NF_DROP;
 
         if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
-                goto inhdr_error;
+                return NF_DROP;
 
         hdr = ipv6_hdr(skb);
 
         if (hdr->version != 6)
-                goto inhdr_error;
+                return NF_DROP;
 
         pkt_len = ntohs(hdr->payload_len);
 
         if (pkt_len || hdr->nexthdr != NEXTHDR_HOP) {
                 if (pkt_len + sizeof(struct ipv6hdr) > skb->len)
-                        goto inhdr_error;
+                        return NF_DROP;
                 if (pskb_trim_rcsum(skb, pkt_len + sizeof(struct ipv6hdr)))
-                        goto inhdr_error;
+                        return NF_DROP;
         }
         if (hdr->nexthdr == NEXTHDR_HOP && check_hbh_len(skb))
-                goto inhdr_error;
+                return NF_DROP;
 
         nf_bridge_put(skb->nf_bridge);
         if (!nf_bridge_alloc(skb))
@@ -598,9 +594,6 @@ static unsigned int br_nf_pre_routing_ipv6(unsigned int hook,
                 br_nf_pre_routing_finish_ipv6);
 
         return NF_STOLEN;
-
-inhdr_error:
-        return NF_DROP;
 }
 
 /* Direct IPv6 traffic to br_nf_pre_routing_ipv6.
@@ -619,11 +612,11 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff *skb,
         __u32 len = nf_bridge_encap_header_len(skb);
 
         if (unlikely(!pskb_may_pull(skb, len)))
-                goto out;
+                return NF_DROP;
 
         p = br_port_get_rcu(in);
         if (p == NULL)
-                goto out;
+                return NF_DROP;
         br = p->br;
 
         if (skb->protocol == htons(ETH_P_IPV6) || IS_VLAN_IPV6(skb) ||
@@ -645,8 +638,7 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff *skb,
         nf_bridge_pull_encap_header_rcsum(skb);
 
         if (br_parse_ip_options(skb))
-                /* Drop invalid packet */
-                goto out;
+                return NF_DROP;
 
         nf_bridge_put(skb->nf_bridge);
         if (!nf_bridge_alloc(skb))
@@ -660,9 +652,6 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff *skb,
                 br_nf_pre_routing_finish);
 
         return NF_STOLEN;
-
-out:
-        return NF_DROP;
 }
 
 
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 4a6a378c84e3..f8bf4c7f842c 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -119,11 +119,13 @@ static int br_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
 
         idx = 0;
         for_each_netdev(net, dev) {
+                struct net_bridge_port *port = br_port_get_rtnl(dev);
+
                 /* not a bridge port */
-                if (!br_port_exists(dev) || idx < cb->args[0])
+                if (!port || idx < cb->args[0])
                         goto skip;
 
-                if (br_fill_ifinfo(skb, br_port_get(dev),
+                if (br_fill_ifinfo(skb, port,
                                    NETLINK_CB(cb->skb).pid,
                                    cb->nlh->nlmsg_seq, RTM_NEWLINK,
                                    NLM_F_MULTI) < 0)
@@ -169,9 +171,9 @@ static int br_rtm_setlink(struct sk_buff *skb,  struct nlmsghdr *nlh, void *arg)
         if (!dev)
                 return -ENODEV;
 
-        if (!br_port_exists(dev))
+        p = br_port_get_rtnl(dev);
+        if (!p)
                 return -EINVAL;
-        p = br_port_get(dev);
 
         /* if kernel STP is running, don't allow changes */
         if (p->br->stp_enabled == BR_KERNEL_STP)
diff --git a/net/bridge/br_notify.c b/net/bridge/br_notify.c
index 404d4e14c6a7..7d337c9b6082 100644
--- a/net/bridge/br_notify.c
+++ b/net/bridge/br_notify.c
@@ -32,15 +32,15 @@ struct notifier_block br_device_notifier = {
 static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
 {
         struct net_device *dev = ptr;
-        struct net_bridge_port *p = br_port_get(dev);
+        struct net_bridge_port *p;
         struct net_bridge *br;
         int err;
 
         /* not a port of a bridge */
-        if (!br_port_exists(dev))
+        p = br_port_get_rtnl(dev);
+        if (!p)
                 return NOTIFY_DONE;
 
-        p = br_port_get(dev);
         br = p->br;
 
         switch (event) {
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 75c90edaf7db..84aac7734bfc 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -72,7 +72,7 @@ struct net_bridge_fdb_entry
 
 struct net_bridge_port_group {
         struct net_bridge_port          *port;
-        struct net_bridge_port_group    *next;
+        struct net_bridge_port_group __rcu *next;
         struct hlist_node               mglist;
         struct rcu_head                 rcu;
         struct timer_list               timer;
@@ -86,7 +86,7 @@ struct net_bridge_mdb_entry
         struct hlist_node               hlist[2];
         struct hlist_node               mglist;
         struct net_bridge               *br;
-        struct net_bridge_port_group    *ports;
+        struct net_bridge_port_group __rcu *ports;
         struct rcu_head                 rcu;
         struct timer_list               timer;
         struct timer_list               query_timer;
@@ -151,11 +151,20 @@ struct net_bridge_port
 #endif
 };
 
-#define br_port_get_rcu(dev) \
-        ((struct net_bridge_port *) rcu_dereference(dev->rx_handler_data))
-#define br_port_get(dev) ((struct net_bridge_port *) dev->rx_handler_data)
 #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
 
+static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
+{
+        struct net_bridge_port *port = rcu_dereference(dev->rx_handler_data);
+        return br_port_exists(dev) ? port : NULL;
+}
+
+static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev)
+{
+        return br_port_exists(dev) ?
+                rtnl_dereference(dev->rx_handler_data) : NULL;
+}
+
 struct br_cpu_netstats {
         u64                     rx_packets;
         u64                     rx_bytes;
@@ -227,7 +236,7 @@ struct net_bridge
         unsigned long                   multicast_startup_query_interval;
 
         spinlock_t                      multicast_lock;
-        struct net_bridge_mdb_htable    *mdb;
+        struct net_bridge_mdb_htable __rcu *mdb;
         struct hlist_head               router_list;
         struct hlist_head               mglist;
 
diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c
index 35cf27087b56..3d9a55d3822f 100644
--- a/net/bridge/br_stp_bpdu.c
+++ b/net/bridge/br_stp_bpdu.c
@@ -141,10 +141,6 @@ void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
         struct net_bridge *br;
         const unsigned char *buf;
 
-        if (!br_port_exists(dev))
-                goto err;
-        p = br_port_get_rcu(dev);
-
         if (!pskb_may_pull(skb, 4))
                 goto err;
 
@@ -153,6 +149,10 @@ void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
         if (buf[0] != 0 || buf[1] != 0 || buf[2] != 0)
                 goto err;
 
+        p = br_port_get_rcu(dev);
+        if (!p)
+                goto err;
+
         br = p->br;
         spin_lock(&br->lock);
 
diff --git a/net/bridge/netfilter/ebtable_broute.c b/net/bridge/netfilter/ebtable_broute.c
index ae3f106c3908..1bcaf36ad612 100644
--- a/net/bridge/netfilter/ebtable_broute.c
+++ b/net/bridge/netfilter/ebtable_broute.c
@@ -87,7 +87,8 @@ static int __init ebtable_broute_init(void)
         if (ret < 0)
                 return ret;
         /* see br_input.c */
-        rcu_assign_pointer(br_should_route_hook, ebt_broute);
+        rcu_assign_pointer(br_should_route_hook,
+                           (br_should_route_hook_t *)ebt_broute);
         return 0;
 }
 
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index a1dcf83f0d58..cbc9f395ab1e 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -128,6 +128,7 @@ ebt_basic_match(const struct ebt_entry *e, const struct sk_buff *skb,
                 const struct net_device *in, const struct net_device *out)
 {
         const struct ethhdr *h = eth_hdr(skb);
+        const struct net_bridge_port *p;
         __be16 ethproto;
         int verdict, i;
 
@@ -148,13 +149,11 @@ ebt_basic_match(const struct ebt_entry *e, const struct sk_buff *skb,
         if (FWINV2(ebt_dev_check(e->out, out), EBT_IOUT))
                 return 1;
         /* rcu_read_lock()ed by nf_hook_slow */
-        if (in && br_port_exists(in) &&
-            FWINV2(ebt_dev_check(e->logical_in, br_port_get_rcu(in)->br->dev),
-                   EBT_ILOGICALIN))
+        if (in && (p = br_port_get_rcu(in)) != NULL &&
+            FWINV2(ebt_dev_check(e->logical_in, p->br->dev), EBT_ILOGICALIN))
                 return 1;
-        if (out && br_port_exists(out) &&
-            FWINV2(ebt_dev_check(e->logical_out, br_port_get_rcu(out)->br->dev),
-                   EBT_ILOGICALOUT))
+        if (out && (p = br_port_get_rcu(out)) != NULL &&
+            FWINV2(ebt_dev_check(e->logical_out, p->br->dev), EBT_ILOGICALOUT))
                 return 1;
 
         if (e->bitmask & EBT_SOURCEMAC) {
diff --git a/net/caif/Makefile b/net/caif/Makefile
index f87481fb0e65..9d38e406e4a4 100644
--- a/net/caif/Makefile
+++ b/net/caif/Makefile
@@ -1,8 +1,6 @@
-ifeq ($(CONFIG_CAIF_DEBUG),y)
-EXTRA_CFLAGS += -DDEBUG
-endif
+ccflags-$(CONFIG_CAIF_DEBUG)     :=      -DDEBUG
 
-caif-objs := caif_dev.o \
+caif-y := caif_dev.o \
         cfcnfg.o cfmuxl.o cfctrl.o  \
         cffrml.o cfveil.o cfdbgl.o\
         cfserl.o cfdgml.o  \
@@ -13,4 +11,4 @@ obj-$(CONFIG_CAIF) += caif.o
 obj-$(CONFIG_CAIF_NETDEV) += chnl_net.o
 obj-$(CONFIG_CAIF) += caif_socket.o
 
-export-objs := caif.o
+export-y := caif.o
diff --git a/net/can/Makefile b/net/can/Makefile
index 9cd3c4b3abda..2d3894b32742 100644
--- a/net/can/Makefile
+++ b/net/can/Makefile
@@ -3,10 +3,10 @@
 #
 
 obj-$(CONFIG_CAN)       += can.o
-can-objs                := af_can.o proc.o
+can-y                   := af_can.o proc.o
 
 obj-$(CONFIG_CAN_RAW)   += can-raw.o
-can-raw-objs            := raw.o
+can-raw-y               := raw.o
 
 obj-$(CONFIG_CAN_BCM)   += can-bcm.o
-can-bcm-objs            := bcm.o
+can-bcm-y               := bcm.o
diff --git a/net/ceph/Makefile b/net/ceph/Makefile
index 5f19415ec9c0..e87ef435e11b 100644
--- a/net/ceph/Makefile
+++ b/net/ceph/Makefile
@@ -3,7 +3,7 @@
 #
 obj-$(CONFIG_CEPH_LIB) += libceph.o
 
-libceph-objs := ceph_common.o messenger.o msgpool.o buffer.o pagelist.o \
+libceph-y := ceph_common.o messenger.o msgpool.o buffer.o pagelist.o \
         mon_client.o \
         osd_client.o osdmap.o crush/crush.o crush/mapper.o crush/hash.o \
         debugfs.o \
diff --git a/net/core/datagram.c b/net/core/datagram.c
index cd1e039c8755..18ac112ea7ae 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -177,7 +177,7 @@ struct sk_buff *__skb_recv_datagram(struct sock *sk, unsigned flags,
                  * interrupt level will suddenly eat the receive_queue.
                  *
                  * Look at current nfs client by the way...
-                 * However, this function was corrent in any case. 8)
+                 * However, this function was correct in any case. 8)
                  */
                 unsigned long cpu_flags;
 
diff --git a/net/core/dev.c b/net/core/dev.c
index 0dd54a69dace..92d414ac0e30 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -743,34 +743,31 @@ struct net_device *dev_get_by_index(struct net *net, int ifindex)
 EXPORT_SYMBOL(dev_get_by_index);
 
 /**
- *      dev_getbyhwaddr - find a device by its hardware address
+ *      dev_getbyhwaddr_rcu - find a device by its hardware address
  *      @net: the applicable net namespace
  *      @type: media type of device
  *      @ha: hardware address
  *
  *      Search for an interface by MAC address. Returns NULL if the device
- *      is not found or a pointer to the device. The caller must hold the
- *      rtnl semaphore. The returned device has not had its ref count increased
+ *      is not found or a pointer to the device. The caller must hold RCU
+ *      The returned device has not had its ref count increased
  *      and the caller must therefore be careful about locking
  *
- *      BUGS:
- *      If the API was consistent this would be __dev_get_by_hwaddr
  */
 
-struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *ha)
+struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type,
+                                       const char *ha)
 {
         struct net_device *dev;
 
-        ASSERT_RTNL();
-
-        for_each_netdev(net, dev)
+        for_each_netdev_rcu(net, dev)
                 if (dev->type == type &&
                     !memcmp(dev->dev_addr, ha, dev->addr_len))
                         return dev;
 
         return NULL;
 }
-EXPORT_SYMBOL(dev_getbyhwaddr);
+EXPORT_SYMBOL(dev_getbyhwaddr_rcu);
 
 struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type)
 {
@@ -1225,52 +1222,90 @@ int dev_open(struct net_device *dev)
 }
 EXPORT_SYMBOL(dev_open);
 
-static int __dev_close(struct net_device *dev)
+static int __dev_close_many(struct list_head *head)
 {
-        const struct net_device_ops *ops = dev->netdev_ops;
+        struct net_device *dev;
 
         ASSERT_RTNL();
         might_sleep();
 
-        /*
-         *      Tell people we are going down, so that they can
-         *      prepare to death, when device is still operating.
-         */
-        call_netdevice_notifiers(NETDEV_GOING_DOWN, dev);
+        list_for_each_entry(dev, head, unreg_list) {
+                /*
+                 *      Tell people we are going down, so that they can
+                 *      prepare to death, when device is still operating.
+                 */
+                call_netdevice_notifiers(NETDEV_GOING_DOWN, dev);
 
-        clear_bit(__LINK_STATE_START, &dev->state);
+                clear_bit(__LINK_STATE_START, &dev->state);
 
-        /* Synchronize to scheduled poll. We cannot touch poll list,
-         * it can be even on different cpu. So just clear netif_running().
-         *
-         * dev->stop() will invoke napi_disable() on all of it's
-         * napi_struct instances on this device.
-         */
-        smp_mb__after_clear_bit(); /* Commit netif_running(). */
+                /* Synchronize to scheduled poll. We cannot touch poll list, it
+                 * can be even on different cpu. So just clear netif_running().
+                 *
+                 * dev->stop() will invoke napi_disable() on all of it's
+                 * napi_struct instances on this device.
+                 */
+                smp_mb__after_clear_bit(); /* Commit netif_running(). */
+        }
 
-        dev_deactivate(dev);
+        dev_deactivate_many(head);
 
-        /*
-         *      Call the device specific close. This cannot fail.
-         *      Only if device is UP
-         *
-         *      We allow it to be called even after a DETACH hot-plug
-         *      event.
-         */
-        if (ops->ndo_stop)
-                ops->ndo_stop(dev);
+        list_for_each_entry(dev, head, unreg_list) {
+                const struct net_device_ops *ops = dev->netdev_ops;
 
-        /*
-         *      Device is now down.
-         */
+                /*
+                 *      Call the device specific close. This cannot fail.
+                 *      Only if device is UP
+                 *
+                 *      We allow it to be called even after a DETACH hot-plug
+                 *      event.
+                 */
+                if (ops->ndo_stop)
+                        ops->ndo_stop(dev);
+
+                /*
+                 *      Device is now down.
+                 */
+
+                dev->flags &= ~IFF_UP;
+
+                /*
+                 *      Shutdown NET_DMA
+                 */
+                net_dmaengine_put();
+        }
+
+        return 0;
+}
+
+static int __dev_close(struct net_device *dev)
+{
+        LIST_HEAD(single);
+
+        list_add(&dev->unreg_list, &single);
+        return __dev_close_many(&single);
+}
 
-        dev->flags &= ~IFF_UP;
+int dev_close_many(struct list_head *head)
+{
+        struct net_device *dev, *tmp;
+        LIST_HEAD(tmp_list);
+
+        list_for_each_entry_safe(dev, tmp, head, unreg_list)
+                if (!(dev->flags & IFF_UP))
+                        list_move(&dev->unreg_list, &tmp_list);
+
+        __dev_close_many(head);
 
         /*
-         *      Shutdown NET_DMA
+         * Tell people we are down
          */
-        net_dmaengine_put();
+        list_for_each_entry(dev, head, unreg_list) {
+                rtmsg_ifinfo(RTM_NEWLINK, dev, IFF_UP|IFF_RUNNING);
+                call_netdevice_notifiers(NETDEV_DOWN, dev);
+        }
 
+        /* rollback_registered_many needs the complete original list */
+        list_splice(&tmp_list, head);
         return 0;
 }
 
@@ -1285,16 +1320,10 @@ static int __dev_close(struct net_device *dev)
  */
 int dev_close(struct net_device *dev)
 {
-        if (!(dev->flags & IFF_UP))
-                return 0;
-
-        __dev_close(dev);
+        LIST_HEAD(single);
 
-        /*
-         * Tell people we are down
-         */
-        rtmsg_ifinfo(RTM_NEWLINK, dev, IFF_UP|IFF_RUNNING);
-        call_netdevice_notifiers(NETDEV_DOWN, dev);
+        list_add(&dev->unreg_list, &single);
+        dev_close_many(&single);
 
         return 0;
 }
@@ -1557,12 +1586,19 @@ static void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
  */
 int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq)
 {
+        int rc;
+
         if (txq < 1 || txq > dev->num_tx_queues)
                 return -EINVAL;
 
         if (dev->reg_state == NETREG_REGISTERED) {
                 ASSERT_RTNL();
 
+                rc = netdev_queue_update_kobjects(dev, dev->real_num_tx_queues,
+                                                  txq);
+                if (rc)
+                        return rc;
+
                 if (txq < dev->real_num_tx_queues)
                         qdisc_reset_all_tx_gt(dev, txq);
         }
@@ -1757,7 +1793,7 @@ int skb_checksum_help(struct sk_buff *skb)
                 goto out_set_summed;
         }
 
-        offset = skb->csum_start - skb_headroom(skb);
+        offset = skb_checksum_start_offset(skb);
         BUG_ON(offset >= skb_headlen(skb));
         csum = skb_checksum(skb, offset, skb->len - offset, 0);
 
@@ -1794,16 +1830,18 @@ struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features)
         struct sk_buff *segs = ERR_PTR(-EPROTONOSUPPORT);
         struct packet_type *ptype;
         __be16 type = skb->protocol;
+        int vlan_depth = ETH_HLEN;
         int err;
 
-        if (type == htons(ETH_P_8021Q)) {
-                struct vlan_ethhdr *veh;
+        while (type == htons(ETH_P_8021Q)) {
+                struct vlan_hdr *vh;
 
-                if (unlikely(!pskb_may_pull(skb, VLAN_ETH_HLEN)))
+                if (unlikely(!pskb_may_pull(skb, vlan_depth + VLAN_HLEN)))
                         return ERR_PTR(-EINVAL);
 
-                veh = (struct vlan_ethhdr *)skb->data;
-                type = veh->h_vlan_encapsulated_proto;
+                vh = (struct vlan_hdr *)(skb->data + vlan_depth);
+                type = vh->h_vlan_encapsulated_proto;
+                vlan_depth += VLAN_HLEN;
         }
 
         skb_reset_mac_header(skb);
@@ -1817,8 +1855,7 @@ struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features)
                 if (dev && dev->ethtool_ops && dev->ethtool_ops->get_drvinfo)
                         dev->ethtool_ops->get_drvinfo(dev, &info);
 
-                WARN(1, "%s: caps=(0x%lx, 0x%lx) len=%d data_len=%d "
-                        "ip_summed=%d",
+                WARN(1, "%s: caps=(0x%lx, 0x%lx) len=%d data_len=%d ip_summed=%d\n",
                      info.driver, dev ? dev->features : 0L,
                      skb->sk ? skb->sk->sk_route_caps : 0L,
                      skb->len, skb->data_len, skb->ip_summed);
@@ -1967,6 +2004,23 @@ static inline void skb_orphan_try(struct sk_buff *skb)
         }
 }
 
+int netif_get_vlan_features(struct sk_buff *skb, struct net_device *dev)
+{
+        __be16 protocol = skb->protocol;
+
+        if (protocol == htons(ETH_P_8021Q)) {
+                struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
+                protocol = veh->h_vlan_encapsulated_proto;
+        } else if (!skb->vlan_tci)
+                return dev->features;
+
+        if (protocol != htons(ETH_P_8021Q))
+                return dev->features & dev->vlan_features;
+        else
+                return 0;
+}
+EXPORT_SYMBOL(netif_get_vlan_features);
+
 /*
  * Returns true if either:
  *      1. skb has frag_list and the device doesn't support FRAGLIST, or
@@ -1977,15 +2031,20 @@ static inline void skb_orphan_try(struct sk_buff *skb)
 static inline int skb_needs_linearize(struct sk_buff *skb,
                                       struct net_device *dev)
 {
-        int features = dev->features;
+        if (skb_is_nonlinear(skb)) {
+                int features = dev->features;
 
-        if (skb->protocol == htons(ETH_P_8021Q) || vlan_tx_tag_present(skb))
-                features &= dev->vlan_features;
+                if (vlan_tx_tag_present(skb))
+                        features &= dev->vlan_features;
 
-        return skb_is_nonlinear(skb) &&
-               ((skb_has_frag_list(skb) && !(features & NETIF_F_FRAGLIST)) ||
-                (skb_shinfo(skb)->nr_frags && (!(features & NETIF_F_SG) ||
-                                              illegal_highdma(dev, skb))));
+                return (skb_has_frag_list(skb) &&
+                        !(features & NETIF_F_FRAGLIST)) ||
+                        (skb_shinfo(skb)->nr_frags &&
+                        (!(features & NETIF_F_SG) ||
+                        illegal_highdma(dev, skb)));
+        }
+
+        return 0;
 }
 
 int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
@@ -1995,9 +2054,6 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
         int rc = NETDEV_TX_OK;
 
         if (likely(!skb->next)) {
-                if (!list_empty(&ptype_all))
-                        dev_queue_xmit_nit(skb, dev);
-
                 /*
                  * If device doesnt need skb->dst, release it right now while
                  * its hot in this cpu cache
@@ -2005,6 +2061,9 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
                 if (dev->priv_flags & IFF_XMIT_DST_RELEASE)
                         skb_dst_drop(skb);
 
+                if (!list_empty(&ptype_all))
+                        dev_queue_xmit_nit(skb, dev);
+
                 skb_orphan_try(skb);
 
                 if (vlan_tx_tag_present(skb) &&
@@ -2031,8 +2090,8 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
                          * checksumming here.
                          */
                         if (skb->ip_summed == CHECKSUM_PARTIAL) {
-                                skb_set_transport_header(skb, skb->csum_start -
-                                              skb_headroom(skb));
+                                skb_set_transport_header(skb,
+                                        skb_checksum_start_offset(skb));
                                 if (!dev_can_checksum(dev, skb) &&
                                      skb_checksum_help(skb))
                                         goto out_kfree_skb;
@@ -2085,14 +2144,19 @@ out:
 
 static u32 hashrnd __read_mostly;
 
-u16 skb_tx_hash(const struct net_device *dev, const struct sk_buff *skb)
+/*
+ * Returns a Tx hash based on the given packet descriptor a Tx queues' number
+ * to be used as a distribution range.
+ */
+u16 __skb_tx_hash(const struct net_device *dev, const struct sk_buff *skb,
+                  unsigned int num_tx_queues)
 {
         u32 hash;
 
         if (skb_rx_queue_recorded(skb)) {
                 hash = skb_get_rx_queue(skb);
-                while (unlikely(hash >= dev->real_num_tx_queues))
-                        hash -= dev->real_num_tx_queues;
+                while (unlikely(hash >= num_tx_queues))
+                        hash -= num_tx_queues;
                 return hash;
         }
 
@@ -2102,9 +2166,9 @@ u16 skb_tx_hash(const struct net_device *dev, const struct sk_buff *skb)
                 hash = (__force u16) skb->protocol ^ skb->rxhash;
         hash = jhash_1word(hash, hashrnd);
 
-        return (u16) (((u64) hash * dev->real_num_tx_queues) >> 32);
+        return (u16) (((u64) hash * num_tx_queues) >> 32);
 }
-EXPORT_SYMBOL(skb_tx_hash);
+EXPORT_SYMBOL(__skb_tx_hash);
 
 static inline u16 dev_cap_txqueue(struct net_device *dev, u16 queue_index)
 {
@@ -2119,26 +2183,70 @@ static inline u16 dev_cap_txqueue(struct net_device *dev, u16 queue_index)
         return queue_index;
 }
 
+static inline int get_xps_queue(struct net_device *dev, struct sk_buff *skb)
+{
+#ifdef CONFIG_XPS
+        struct xps_dev_maps *dev_maps;
+        struct xps_map *map;
+        int queue_index = -1;
+
+        rcu_read_lock();
+        dev_maps = rcu_dereference(dev->xps_maps);
+        if (dev_maps) {
+                map = rcu_dereference(
+                    dev_maps->cpu_map[raw_smp_processor_id()]);
+                if (map) {
+                        if (map->len == 1)
+                                queue_index = map->queues[0];
+                        else {
+                                u32 hash;
+                                if (skb->sk && skb->sk->sk_hash)
+                                        hash = skb->sk->sk_hash;
+                                else
+                                        hash = (__force u16) skb->protocol ^
+                                            skb->rxhash;
+                                hash = jhash_1word(hash, hashrnd);
+                                queue_index = map->queues[
+                                    ((u64)hash * map->len) >> 32];
+                        }
+                        if (unlikely(queue_index >= dev->real_num_tx_queues))
+                                queue_index = -1;
+                }
+        }
+        rcu_read_unlock();
+
+        return queue_index;
+#else
+        return -1;
+#endif
+}
+
 static struct netdev_queue *dev_pick_tx(struct net_device *dev,
                                         struct sk_buff *skb)
 {
         int queue_index;
         const struct net_device_ops *ops = dev->netdev_ops;
 
-        if (ops->ndo_select_queue) {
+        if (dev->real_num_tx_queues == 1)
+                queue_index = 0;
+        else if (ops->ndo_select_queue) {
                 queue_index = ops->ndo_select_queue(dev, skb);
                 queue_index = dev_cap_txqueue(dev, queue_index);
         } else {
                 struct sock *sk = skb->sk;
                 queue_index = sk_tx_queue_get(sk);
-                if (queue_index < 0 || queue_index >= dev->real_num_tx_queues) {
 
-                        queue_index = 0;
-                        if (dev->real_num_tx_queues > 1)
+                if (queue_index < 0 || skb->ooo_okay ||
+                    queue_index >= dev->real_num_tx_queues) {
+                        int old_index = queue_index;
+
+                        queue_index = get_xps_queue(dev, skb);
+                        if (queue_index < 0)
                                 queue_index = skb_tx_hash(dev, skb);
 
-                        if (sk) {
-                                struct dst_entry *dst = rcu_dereference_check(sk->sk_dst_cache, 1);
+                        if (queue_index != old_index && sk) {
+                                struct dst_entry *dst =
+                                    rcu_dereference_check(sk->sk_dst_cache, 1);
 
                                 if (dst && skb_dst(skb) == dst)
                                         sk_tx_queue_set(sk, queue_index);
@@ -4887,10 +4995,12 @@ static void rollback_registered_many(struct list_head *head)
                 }
 
                 BUG_ON(dev->reg_state != NETREG_REGISTERED);
+        }
 
-                /* If device is running, close it first. */
-                dev_close(dev);
+        /* If device is running, close it first. */
+        dev_close_many(head);
 
+        list_for_each_entry(dev, head, unreg_list) {
                 /* And unlink it from device chain. */
                 unlist_netdevice(dev);
 
@@ -4967,10 +5077,13 @@ unsigned long netdev_fix_features(unsigned long features, const char *name)
         }
 
         if (features & NETIF_F_UFO) {
-                if (!(features & NETIF_F_GEN_CSUM)) {
+                /* maybe split UFO into V4 and V6? */
+                if (!((features & NETIF_F_GEN_CSUM) ||
+                    (features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
+                            == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))) {
                         if (name)
                                 printk(KERN_ERR "%s: Dropping NETIF_F_UFO "
-                                       "since no NETIF_F_HW_CSUM feature.\n",
+                                       "since no checksum offload features.\n",
                                        name);
                         features &= ~NETIF_F_UFO;
                 }
@@ -5014,9 +5127,9 @@ void netif_stacked_transfer_operstate(const struct net_device *rootdev,
 }
 EXPORT_SYMBOL(netif_stacked_transfer_operstate);
 
+#ifdef CONFIG_RPS
 static int netif_alloc_rx_queues(struct net_device *dev)
 {
-#ifdef CONFIG_RPS
         unsigned int i, count = dev->num_rx_queues;
         struct netdev_rx_queue *rx;
 
@@ -5029,15 +5142,22 @@ static int netif_alloc_rx_queues(struct net_device *dev)
         }
         dev->_rx = rx;
 
-        /*
-         * Set a pointer to first element in the array which holds the
-         * reference count.
-         */
         for (i = 0; i < count; i++)
-                rx[i].first = rx;
-#endif
+                rx[i].dev = dev;
         return 0;
 }
+#endif
+
+static void netdev_init_one_queue(struct net_device *dev,
+                                  struct netdev_queue *queue, void *_unused)
+{
+        /* Initialize queue lock */
+        spin_lock_init(&queue->_xmit_lock);
+        netdev_set_xmit_lockdep_class(&queue->_xmit_lock, dev->type);
+        queue->xmit_lock_owner = -1;
+        netdev_queue_numa_node_write(queue, NUMA_NO_NODE);
+        queue->dev = dev;
+}
 
 static int netif_alloc_netdev_queues(struct net_device *dev)
 {
@@ -5053,25 +5173,11 @@ static int netif_alloc_netdev_queues(struct net_device *dev)
                 return -ENOMEM;
         }
         dev->_tx = tx;
-        return 0;
-}
-
-static void netdev_init_one_queue(struct net_device *dev,
-                                  struct netdev_queue *queue,
-                                  void *_unused)
-{
-        queue->dev = dev;
-
-        /* Initialize queue lock */
-        spin_lock_init(&queue->_xmit_lock);
-        netdev_set_xmit_lockdep_class(&queue->_xmit_lock, dev->type);
-        queue->xmit_lock_owner = -1;
-}
 
-static void netdev_init_queues(struct net_device *dev)
-{
         netdev_for_each_tx_queue(dev, netdev_init_one_queue, NULL);
         spin_lock_init(&dev->tx_global_lock);
+
+        return 0;
 }
 
 /**
@@ -5110,16 +5216,6 @@ int register_netdevice(struct net_device *dev)
 
         dev->iflink = -1;
 
-        ret = netif_alloc_rx_queues(dev);
-        if (ret)
-                goto out;
-
-        ret = netif_alloc_netdev_queues(dev);
-        if (ret)
-                goto out;
-
-        netdev_init_queues(dev);
-
         /* Init, if this function is available */
         if (dev->netdev_ops->ndo_init) {
                 ret = dev->netdev_ops->ndo_init(dev);
@@ -5577,10 +5673,14 @@ struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
 
         dev->num_tx_queues = queue_count;
         dev->real_num_tx_queues = queue_count;
+        if (netif_alloc_netdev_queues(dev))
+                goto free_pcpu;
 
 #ifdef CONFIG_RPS
         dev->num_rx_queues = queue_count;
         dev->real_num_rx_queues = queue_count;
+        if (netif_alloc_rx_queues(dev))
+                goto free_pcpu;
 #endif
 
         dev->gso_max_size = GSO_MAX_SIZE;
@@ -5597,6 +5697,11 @@ struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
 
 free_pcpu:
         free_percpu(dev->pcpu_refcnt);
+        kfree(dev->_tx);
+#ifdef CONFIG_RPS
+        kfree(dev->_rx);
+#endif
+
 free_p:
         kfree(p);
         return NULL;
@@ -5618,6 +5723,9 @@ void free_netdev(struct net_device *dev)
         release_net(dev_net(dev));
 
         kfree(dev->_tx);
+#ifdef CONFIG_RPS
+        kfree(dev->_rx);
+#endif
 
         kfree(rcu_dereference_raw(dev->ingress_queue));
 
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 956a9f4971cb..17741782a345 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -891,6 +891,20 @@ static int ethtool_nway_reset(struct net_device *dev)
         return dev->ethtool_ops->nway_reset(dev);
 }
 
+static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
+{
+        struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
+
+        if (!dev->ethtool_ops->get_link)
+                return -EOPNOTSUPP;
+
+        edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
+
+        if (copy_to_user(useraddr, &edata, sizeof(edata)))
+                return -EFAULT;
+        return 0;
+}
+
 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
 {
         struct ethtool_eeprom eeprom;
@@ -1171,7 +1185,9 @@ static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr)
                 return -EFAULT;
         if (edata.data && !(dev->features & NETIF_F_SG))
                 return -EINVAL;
-        if (edata.data && !(dev->features & NETIF_F_HW_CSUM))
+        if (edata.data && !((dev->features & NETIF_F_GEN_CSUM) ||
+                (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
+                        == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)))
                 return -EINVAL;
         return dev->ethtool_ops->set_ufo(dev, edata.data);
 }
@@ -1528,8 +1544,7 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
                 rc = ethtool_nway_reset(dev);
                 break;
         case ETHTOOL_GLINK:
-                rc = ethtool_get_value(dev, useraddr, ethcmd,
-                                       dev->ethtool_ops->get_link);
+                rc = ethtool_get_link(dev, useraddr);
                 break;
         case ETHTOOL_GEEPROM:
                 rc = ethtool_get_eeprom(dev, useraddr);
diff --git a/net/core/filter.c b/net/core/filter.c
index ae21a0d3c4a2..e8a6ac411ffb 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -37,9 +37,58 @@
 #include <asm/uaccess.h>
 #include <asm/unaligned.h>
 #include <linux/filter.h>
+#include <linux/reciprocal_div.h>
+
+enum {
+        BPF_S_RET_K = 1,
+        BPF_S_RET_A,
+        BPF_S_ALU_ADD_K,
+        BPF_S_ALU_ADD_X,
+        BPF_S_ALU_SUB_K,
+        BPF_S_ALU_SUB_X,
+        BPF_S_ALU_MUL_K,
+        BPF_S_ALU_MUL_X,
+        BPF_S_ALU_DIV_X,
+        BPF_S_ALU_AND_K,
+        BPF_S_ALU_AND_X,
+        BPF_S_ALU_OR_K,
+        BPF_S_ALU_OR_X,
+        BPF_S_ALU_LSH_K,
+        BPF_S_ALU_LSH_X,
+        BPF_S_ALU_RSH_K,
+        BPF_S_ALU_RSH_X,
+        BPF_S_ALU_NEG,
+        BPF_S_LD_W_ABS,
+        BPF_S_LD_H_ABS,
+        BPF_S_LD_B_ABS,
+        BPF_S_LD_W_LEN,
+        BPF_S_LD_W_IND,
+        BPF_S_LD_H_IND,
+        BPF_S_LD_B_IND,
+        BPF_S_LD_IMM,
+        BPF_S_LDX_W_LEN,
+        BPF_S_LDX_B_MSH,
+        BPF_S_LDX_IMM,
+        BPF_S_MISC_TAX,
+        BPF_S_MISC_TXA,
+        BPF_S_ALU_DIV_K,
+        BPF_S_LD_MEM,
+        BPF_S_LDX_MEM,
+        BPF_S_ST,
+        BPF_S_STX,
+        BPF_S_JMP_JA,
+        BPF_S_JMP_JEQ_K,
+        BPF_S_JMP_JEQ_X,
+        BPF_S_JMP_JGE_K,
+        BPF_S_JMP_JGE_X,
+        BPF_S_JMP_JGT_K,
+        BPF_S_JMP_JGT_X,
+        BPF_S_JMP_JSET_K,
+        BPF_S_JMP_JSET_X,
+};
 
 /* No hurry in this branch */
-static void *__load_pointer(struct sk_buff *skb, int k)
+static void *__load_pointer(const struct sk_buff *skb, int k, unsigned int size)
 {
         u8 *ptr = NULL;
 
@@ -48,12 +97,12 @@ static void *__load_pointer(struct sk_buff *skb, int k)
         else if (k >= SKF_LL_OFF)
                 ptr = skb_mac_header(skb) + k - SKF_LL_OFF;
 
-        if (ptr >= skb->head && ptr < skb_tail_pointer(skb))
+        if (ptr >= skb->head && ptr + size <= skb_tail_pointer(skb))
                 return ptr;
         return NULL;
 }
 
-static inline void *load_pointer(struct sk_buff *skb, int k,
+static inline void *load_pointer(const struct sk_buff *skb, int k,
                                  unsigned int size, void *buffer)
 {
         if (k >= 0)
@@ -61,7 +110,7 @@ static inline void *load_pointer(struct sk_buff *skb, int k,
         else {
                 if (k >= SKF_AD_OFF)
                         return NULL;
-                return __load_pointer(skb, k);
+                return __load_pointer(skb, k, size);
         }
 }
 
@@ -89,7 +138,7 @@ int sk_filter(struct sock *sk, struct sk_buff *skb)
         rcu_read_lock_bh();
         filter = rcu_dereference_bh(sk->sk_filter);
         if (filter) {
-                unsigned int pkt_len = sk_run_filter(skb, filter->insns, filter->len);
+                unsigned int pkt_len = sk_run_filter(skb, filter->insns);
 
                 err = pkt_len ? pskb_trim(skb, pkt_len) : -EPERM;
         }
@@ -103,50 +152,52 @@ EXPORT_SYMBOL(sk_filter);
  *      sk_run_filter - run a filter on a socket
  *      @skb: buffer to run the filter on
  *      @filter: filter to apply
- *      @flen: length of filter
  *
  * Decode and apply filter instructions to the skb->data.
- * Return length to keep, 0 for none. skb is the data we are
- * filtering, filter is the array of filter instructions, and
- * len is the number of filter blocks in the array.
+ * Return length to keep, 0 for none. @skb is the data we are
+ * filtering, @filter is the array of filter instructions.
+ * Because all jumps are guaranteed to be before last instruction,
+ * and last instruction guaranteed to be a RET, we dont need to check
+ * flen. (We used to pass to this function the length of filter)
  */
-unsigned int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int flen)
+unsigned int sk_run_filter(const struct sk_buff *skb,
+                           const struct sock_filter *fentry)
 {
         void *ptr;
         u32 A = 0;                      /* Accumulator */
         u32 X = 0;                      /* Index Register */
         u32 mem[BPF_MEMWORDS];          /* Scratch Memory Store */
-        unsigned long memvalid = 0;
         u32 tmp;
         int k;
-        int pc;
 
-        BUILD_BUG_ON(BPF_MEMWORDS > BITS_PER_LONG);
         /*
          * Process array of filter instructions.
          */
-        for (pc = 0; pc < flen; pc++) {
-                const struct sock_filter *fentry = &filter[pc];
-                u32 f_k = fentry->k;
+        for (;; fentry++) {
+#if defined(CONFIG_X86_32)
+#define K (fentry->k)
+#else
+                const u32 K = fentry->k;
+#endif
 
                 switch (fentry->code) {
                 case BPF_S_ALU_ADD_X:
                         A += X;
                         continue;
                 case BPF_S_ALU_ADD_K:
-                        A += f_k;
+                        A += K;
                         continue;
                 case BPF_S_ALU_SUB_X:
                         A -= X;
                         continue;
                 case BPF_S_ALU_SUB_K:
-                        A -= f_k;
+                        A -= K;
                         continue;
                 case BPF_S_ALU_MUL_X:
                         A *= X;
                         continue;
                 case BPF_S_ALU_MUL_K:
-                        A *= f_k;
+                        A *= K;
                         continue;
                 case BPF_S_ALU_DIV_X:
                         if (X == 0)
@@ -154,64 +205,64 @@ unsigned int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int
                         A /= X;
                         continue;
                 case BPF_S_ALU_DIV_K:
-                        A /= f_k;
+                        A = reciprocal_divide(A, K);
                         continue;
                 case BPF_S_ALU_AND_X:
                         A &= X;
                         continue;
                 case BPF_S_ALU_AND_K:
-                        A &= f_k;
+                        A &= K;
                         continue;
                 case BPF_S_ALU_OR_X:
                         A |= X;
                         continue;
                 case BPF_S_ALU_OR_K:
-                        A |= f_k;
+                        A |= K;
                         continue;
                 case BPF_S_ALU_LSH_X:
                         A <<= X;
                         continue;
                 case BPF_S_ALU_LSH_K:
-                        A <<= f_k;
+                        A <<= K;
                         continue;
                 case BPF_S_ALU_RSH_X:
                         A >>= X;
                         continue;
                 case BPF_S_ALU_RSH_K:
-                        A >>= f_k;
+                        A >>= K;
                         continue;
                 case BPF_S_ALU_NEG:
                         A = -A;
                         continue;
                 case BPF_S_JMP_JA:
-                        pc += f_k;
+                        fentry += K;
                         continue;
                 case BPF_S_JMP_JGT_K:
-                        pc += (A > f_k) ? fentry->jt : fentry->jf;
+                        fentry += (A > K) ? fentry->jt : fentry->jf;
                         continue;
                 case BPF_S_JMP_JGE_K:
-                        pc += (A >= f_k) ? fentry->jt : fentry->jf;
+                        fentry += (A >= K) ? fentry->jt : fentry->jf;
                         continue;
                 case BPF_S_JMP_JEQ_K:
-                        pc += (A == f_k) ? fentry->jt : fentry->jf;
+                        fentry += (A == K) ? fentry->jt : fentry->jf;
                         continue;
                 case BPF_S_JMP_JSET_K:
-                        pc += (A & f_k) ? fentry->jt : fentry->jf;
+                        fentry += (A & K) ? fentry->jt : fentry->jf;
                         continue;
                 case BPF_S_JMP_JGT_X:
-                        pc += (A > X) ? fentry->jt : fentry->jf;
+                        fentry += (A > X) ? fentry->jt : fentry->jf;
                         continue;
                 case BPF_S_JMP_JGE_X:
-                        pc += (A >= X) ? fentry->jt : fentry->jf;
+                        fentry += (A >= X) ? fentry->jt : fentry->jf;
                         continue;
                 case BPF_S_JMP_JEQ_X:
-                        pc += (A == X) ? fentry->jt : fentry->jf;
+                        fentry += (A == X) ? fentry->jt : fentry->jf;
                         continue;
                 case BPF_S_JMP_JSET_X:
-                        pc += (A & X) ? fentry->jt : fentry->jf;
+                        fentry += (A & X) ? fentry->jt : fentry->jf;
                         continue;
                 case BPF_S_LD_W_ABS:
-                        k = f_k;
+                        k = K;
 load_w:
                         ptr = load_pointer(skb, k, 4, &tmp);
                         if (ptr != NULL) {
@@ -220,7 +271,7 @@ load_w:
                         }
                         break;
                 case BPF_S_LD_H_ABS:
-                        k = f_k;
+                        k = K;
 load_h:
                         ptr = load_pointer(skb, k, 2, &tmp);
                         if (ptr != NULL) {
@@ -229,7 +280,7 @@ load_h:
                         }
                         break;
                 case BPF_S_LD_B_ABS:
-                        k = f_k;
+                        k = K;
 load_b:
                         ptr = load_pointer(skb, k, 1, &tmp);
                         if (ptr != NULL) {
@@ -244,34 +295,32 @@ load_b:
                         X = skb->len;
                         continue;
                 case BPF_S_LD_W_IND:
-                        k = X + f_k;
+                        k = X + K;
                         goto load_w;
                 case BPF_S_LD_H_IND:
-                        k = X + f_k;
+                        k = X + K;
                         goto load_h;
                 case BPF_S_LD_B_IND:
-                        k = X + f_k;
+                        k = X + K;
                         goto load_b;
                 case BPF_S_LDX_B_MSH:
-                        ptr = load_pointer(skb, f_k, 1, &tmp);
+                        ptr = load_pointer(skb, K, 1, &tmp);
                         if (ptr != NULL) {
                                 X = (*(u8 *)ptr & 0xf) << 2;
                                 continue;
                         }
                         return 0;
                 case BPF_S_LD_IMM:
-                        A = f_k;
+                        A = K;
                         continue;
                 case BPF_S_LDX_IMM:
-                        X = f_k;
+                        X = K;
                         continue;
                 case BPF_S_LD_MEM:
-                        A = (memvalid & (1UL << f_k)) ?
-                                mem[f_k] : 0;
+                        A = mem[K];
                         continue;
                 case BPF_S_LDX_MEM:
-                        X = (memvalid & (1UL << f_k)) ?
-                                mem[f_k] : 0;
+                        X = mem[K];
                         continue;
                 case BPF_S_MISC_TAX:
                         X = A;
@@ -280,16 +329,14 @@ load_b:
                         A = X;
                         continue;
                 case BPF_S_RET_K:
-                        return f_k;
+                        return K;
                 case BPF_S_RET_A:
                         return A;
                 case BPF_S_ST:
-                        memvalid |= 1UL << f_k;
-                        mem[f_k] = A;
+                        mem[K] = A;
                         continue;
                 case BPF_S_STX:
-                        memvalid |= 1UL << f_k;
-                        mem[f_k] = X;
+                        mem[K] = X;
                         continue;
                 default:
                         WARN_ON(1);
@@ -323,6 +370,12 @@ load_b:
                                 return 0;
                         A = skb->dev->type;
                         continue;
+                case SKF_AD_RXHASH:
+                        A = skb->rxhash;
+                        continue;
+                case SKF_AD_CPU:
+                        A = raw_smp_processor_id();
+                        continue;
                 case SKF_AD_NLATTR: {
                         struct nlattr *nla;
 
@@ -367,6 +420,66 @@ load_b:
 }
 EXPORT_SYMBOL(sk_run_filter);
 
+/*
+ * Security :
+ * A BPF program is able to use 16 cells of memory to store intermediate
+ * values (check u32 mem[BPF_MEMWORDS] in sk_run_filter())
+ * As we dont want to clear mem[] array for each packet going through
+ * sk_run_filter(), we check that filter loaded by user never try to read
+ * a cell if not previously written, and we check all branches to be sure
+ * a malicious user doesnt try to abuse us.
+ */
+static int check_load_and_stores(struct sock_filter *filter, int flen)
+{
+        u16 *masks, memvalid = 0; /* one bit per cell, 16 cells */
+        int pc, ret = 0;
+
+        BUILD_BUG_ON(BPF_MEMWORDS > 16);
+        masks = kmalloc(flen * sizeof(*masks), GFP_KERNEL);
+        if (!masks)
+                return -ENOMEM;
+        memset(masks, 0xff, flen * sizeof(*masks));
+
+        for (pc = 0; pc < flen; pc++) {
+                memvalid &= masks[pc];
+
+                switch (filter[pc].code) {
+                case BPF_S_ST:
+                case BPF_S_STX:
+                        memvalid |= (1 << filter[pc].k);
+                        break;
+                case BPF_S_LD_MEM:
+                case BPF_S_LDX_MEM:
+                        if (!(memvalid & (1 << filter[pc].k))) {
+                                ret = -EINVAL;
+                                goto error;
+                        }
+                        break;
+                case BPF_S_JMP_JA:
+                        /* a jump must set masks on target */
+                        masks[pc + 1 + filter[pc].k] &= memvalid;
+                        memvalid = ~0;
+                        break;
+                case BPF_S_JMP_JEQ_K:
+                case BPF_S_JMP_JEQ_X:
+                case BPF_S_JMP_JGE_K:
+                case BPF_S_JMP_JGE_X:
+                case BPF_S_JMP_JGT_K:
+                case BPF_S_JMP_JGT_X:
+                case BPF_S_JMP_JSET_X:
+                case BPF_S_JMP_JSET_K:
+                        /* a jump must set masks on targets */
+                        masks[pc + 1 + filter[pc].jt] &= memvalid;
+                        masks[pc + 1 + filter[pc].jf] &= memvalid;
+                        memvalid = ~0;
+                        break;
+                }
+        }
+error:
+        kfree(masks);
+        return ret;
+}
+
 /**
  *      sk_chk_filter - verify socket filter code
  *      @filter: filter to verify
@@ -383,7 +496,57 @@ EXPORT_SYMBOL(sk_run_filter);
  */
 int sk_chk_filter(struct sock_filter *filter, int flen)
 {
-        struct sock_filter *ftest;
+        /*
+         * Valid instructions are initialized to non-0.
+         * Invalid instructions are initialized to 0.
+         */
+        static const u8 codes[] = {
+                [BPF_ALU|BPF_ADD|BPF_K]  = BPF_S_ALU_ADD_K,
+                [BPF_ALU|BPF_ADD|BPF_X]  = BPF_S_ALU_ADD_X,
+                [BPF_ALU|BPF_SUB|BPF_K]  = BPF_S_ALU_SUB_K,
+                [BPF_ALU|BPF_SUB|BPF_X]  = BPF_S_ALU_SUB_X,
+                [BPF_ALU|BPF_MUL|BPF_K]  = BPF_S_ALU_MUL_K,
+                [BPF_ALU|BPF_MUL|BPF_X]  = BPF_S_ALU_MUL_X,
+                [BPF_ALU|BPF_DIV|BPF_X]  = BPF_S_ALU_DIV_X,
+                [BPF_ALU|BPF_AND|BPF_K]  = BPF_S_ALU_AND_K,
+                [BPF_ALU|BPF_AND|BPF_X]  = BPF_S_ALU_AND_X,
+                [BPF_ALU|BPF_OR|BPF_K]   = BPF_S_ALU_OR_K,
+                [BPF_ALU|BPF_OR|BPF_X]   = BPF_S_ALU_OR_X,
+                [BPF_ALU|BPF_LSH|BPF_K]  = BPF_S_ALU_LSH_K,
+                [BPF_ALU|BPF_LSH|BPF_X]  = BPF_S_ALU_LSH_X,
+                [BPF_ALU|BPF_RSH|BPF_K]  = BPF_S_ALU_RSH_K,
+                [BPF_ALU|BPF_RSH|BPF_X]  = BPF_S_ALU_RSH_X,
+                [BPF_ALU|BPF_NEG]        = BPF_S_ALU_NEG,
+                [BPF_LD|BPF_W|BPF_ABS]   = BPF_S_LD_W_ABS,
+                [BPF_LD|BPF_H|BPF_ABS]   = BPF_S_LD_H_ABS,
+                [BPF_LD|BPF_B|BPF_ABS]   = BPF_S_LD_B_ABS,
+                [BPF_LD|BPF_W|BPF_LEN]   = BPF_S_LD_W_LEN,
+                [BPF_LD|BPF_W|BPF_IND]   = BPF_S_LD_W_IND,
+                [BPF_LD|BPF_H|BPF_IND]   = BPF_S_LD_H_IND,
+                [BPF_LD|BPF_B|BPF_IND]   = BPF_S_LD_B_IND,
+                [BPF_LD|BPF_IMM]         = BPF_S_LD_IMM,
+                [BPF_LDX|BPF_W|BPF_LEN]  = BPF_S_LDX_W_LEN,
+                [BPF_LDX|BPF_B|BPF_MSH]  = BPF_S_LDX_B_MSH,
+                [BPF_LDX|BPF_IMM]        = BPF_S_LDX_IMM,
+                [BPF_MISC|BPF_TAX]       = BPF_S_MISC_TAX,
+                [BPF_MISC|BPF_TXA]       = BPF_S_MISC_TXA,
+                [BPF_RET|BPF_K]          = BPF_S_RET_K,
+                [BPF_RET|BPF_A]          = BPF_S_RET_A,
+                [BPF_ALU|BPF_DIV|BPF_K]  = BPF_S_ALU_DIV_K,
+                [BPF_LD|BPF_MEM]         = BPF_S_LD_MEM,
+                [BPF_LDX|BPF_MEM]        = BPF_S_LDX_MEM,
+                [BPF_ST]                 = BPF_S_ST,
+                [BPF_STX]                = BPF_S_STX,
+                [BPF_JMP|BPF_JA]         = BPF_S_JMP_JA,
+                [BPF_JMP|BPF_JEQ|BPF_K]  = BPF_S_JMP_JEQ_K,
+                [BPF_JMP|BPF_JEQ|BPF_X]  = BPF_S_JMP_JEQ_X,
+                [BPF_JMP|BPF_JGE|BPF_K]  = BPF_S_JMP_JGE_K,
+                [BPF_JMP|BPF_JGE|BPF_X]  = BPF_S_JMP_JGE_X,
+                [BPF_JMP|BPF_JGT|BPF_K]  = BPF_S_JMP_JGT_K,
+                [BPF_JMP|BPF_JGT|BPF_X]  = BPF_S_JMP_JGT_X,
+                [BPF_JMP|BPF_JSET|BPF_K] = BPF_S_JMP_JSET_K,
+                [BPF_JMP|BPF_JSET|BPF_X] = BPF_S_JMP_JSET_X,
+        };
         int pc;
 
         if (flen == 0 || flen > BPF_MAXINSNS)
@@ -391,136 +554,31 @@ int sk_chk_filter(struct sock_filter *filter, int flen)
 
         /* check the filter code now */
         for (pc = 0; pc < flen; pc++) {
-                ftest = &filter[pc];
-
-                /* Only allow valid instructions */
-                switch (ftest->code) {
-                case BPF_ALU|BPF_ADD|BPF_K:
-                        ftest->code = BPF_S_ALU_ADD_K;
-                        break;
-                case BPF_ALU|BPF_ADD|BPF_X:
-                        ftest->code = BPF_S_ALU_ADD_X;
-                        break;
-                case BPF_ALU|BPF_SUB|BPF_K:
-                        ftest->code = BPF_S_ALU_SUB_K;
-                        break;
-                case BPF_ALU|BPF_SUB|BPF_X:
-                        ftest->code = BPF_S_ALU_SUB_X;
-                        break;
-                case BPF_ALU|BPF_MUL|BPF_K:
-                        ftest->code = BPF_S_ALU_MUL_K;
-                        break;
-                case BPF_ALU|BPF_MUL|BPF_X:
-                        ftest->code = BPF_S_ALU_MUL_X;
-                        break;
-                case BPF_ALU|BPF_DIV|BPF_X:
-                        ftest->code = BPF_S_ALU_DIV_X;
-                        break;
-                case BPF_ALU|BPF_AND|BPF_K:
-                        ftest->code = BPF_S_ALU_AND_K;
-                        break;
-                case BPF_ALU|BPF_AND|BPF_X:
-                        ftest->code = BPF_S_ALU_AND_X;
-                        break;
-                case BPF_ALU|BPF_OR|BPF_K:
-                        ftest->code = BPF_S_ALU_OR_K;
-                        break;
-                case BPF_ALU|BPF_OR|BPF_X:
-                        ftest->code = BPF_S_ALU_OR_X;
-                        break;
-                case BPF_ALU|BPF_LSH|BPF_K:
-                        ftest->code = BPF_S_ALU_LSH_K;
-                        break;
-                case BPF_ALU|BPF_LSH|BPF_X:
-                        ftest->code = BPF_S_ALU_LSH_X;
-                        break;
-                case BPF_ALU|BPF_RSH|BPF_K:
-                        ftest->code = BPF_S_ALU_RSH_K;
-                        break;
-                case BPF_ALU|BPF_RSH|BPF_X:
-                        ftest->code = BPF_S_ALU_RSH_X;
-                        break;
-                case BPF_ALU|BPF_NEG:
-                        ftest->code = BPF_S_ALU_NEG;
-                        break;
-                case BPF_LD|BPF_W|BPF_ABS:
-                        ftest->code = BPF_S_LD_W_ABS;
-                        break;
-                case BPF_LD|BPF_H|BPF_ABS:
-                        ftest->code = BPF_S_LD_H_ABS;
-                        break;
-                case BPF_LD|BPF_B|BPF_ABS:
-                        ftest->code = BPF_S_LD_B_ABS;
-                        break;
-                case BPF_LD|BPF_W|BPF_LEN:
-                        ftest->code = BPF_S_LD_W_LEN;
-                        break;
-                case BPF_LD|BPF_W|BPF_IND:
-                        ftest->code = BPF_S_LD_W_IND;
-                        break;
-                case BPF_LD|BPF_H|BPF_IND:
-                        ftest->code = BPF_S_LD_H_IND;
-                        break;
-                case BPF_LD|BPF_B|BPF_IND:
-                        ftest->code = BPF_S_LD_B_IND;
-                        break;
-                case BPF_LD|BPF_IMM:
-                        ftest->code = BPF_S_LD_IMM;
-                        break;
-                case BPF_LDX|BPF_W|BPF_LEN:
-                        ftest->code = BPF_S_LDX_W_LEN;
-                        break;
-                case BPF_LDX|BPF_B|BPF_MSH:
-                        ftest->code = BPF_S_LDX_B_MSH;
-                        break;
-                case BPF_LDX|BPF_IMM:
-                        ftest->code = BPF_S_LDX_IMM;
-                        break;
-                case BPF_MISC|BPF_TAX:
-                        ftest->code = BPF_S_MISC_TAX;
-                        break;
-                case BPF_MISC|BPF_TXA:
-                        ftest->code = BPF_S_MISC_TXA;
-                        break;
-                case BPF_RET|BPF_K:
-                        ftest->code = BPF_S_RET_K;
-                        break;
-                case BPF_RET|BPF_A:
-                        ftest->code = BPF_S_RET_A;
-                        break;
+                struct sock_filter *ftest = &filter[pc];
+                u16 code = ftest->code;
 
+                if (code >= ARRAY_SIZE(codes))
+                        return -EINVAL;
+                code = codes[code];
+                if (!code)
+                        return -EINVAL;
                 /* Some instructions need special checks */
-
+                switch (code) {
+                case BPF_S_ALU_DIV_K:
                         /* check for division by zero */
-                case BPF_ALU|BPF_DIV|BPF_K:
                         if (ftest->k == 0)
                                 return -EINVAL;
-                        ftest->code = BPF_S_ALU_DIV_K;
-                        break;
-
-                /* check for invalid memory addresses */
-                case BPF_LD|BPF_MEM:
-                        if (ftest->k >= BPF_MEMWORDS)
-                                return -EINVAL;
-                        ftest->code = BPF_S_LD_MEM;
-                        break;
-                case BPF_LDX|BPF_MEM:
-                        if (ftest->k >= BPF_MEMWORDS)
-                                return -EINVAL;
-                        ftest->code = BPF_S_LDX_MEM;
-                        break;
-                case BPF_ST:
-                        if (ftest->k >= BPF_MEMWORDS)
-                                return -EINVAL;
-                        ftest->code = BPF_S_ST;
+                        ftest->k = reciprocal_value(ftest->k);
                         break;
-                case BPF_STX:
+                case BPF_S_LD_MEM:
+                case BPF_S_LDX_MEM:
+                case BPF_S_ST:
+                case BPF_S_STX:
+                        /* check for invalid memory addresses */
                         if (ftest->k >= BPF_MEMWORDS)
                                 return -EINVAL;
-                        ftest->code = BPF_S_STX;
                         break;
-
-                case BPF_JMP|BPF_JA:
+                case BPF_S_JMP_JA:
                         /*
                          * Note, the large ftest->k might cause loops.
                          * Compare this with conditional jumps below,
@@ -528,40 +586,7 @@ int sk_chk_filter(struct sock_filter *filter, int flen)
                          */
                         if (ftest->k >= (unsigned)(flen-pc-1))
                                 return -EINVAL;
-                        ftest->code = BPF_S_JMP_JA;
-                        break;
-
-                case BPF_JMP|BPF_JEQ|BPF_K:
-                        ftest->code = BPF_S_JMP_JEQ_K;
-                        break;
-                case BPF_JMP|BPF_JEQ|BPF_X:
-                        ftest->code = BPF_S_JMP_JEQ_X;
-                        break;
-                case BPF_JMP|BPF_JGE|BPF_K:
-                        ftest->code = BPF_S_JMP_JGE_K;
-                        break;
-                case BPF_JMP|BPF_JGE|BPF_X:
-                        ftest->code = BPF_S_JMP_JGE_X;
-                        break;
-                case BPF_JMP|BPF_JGT|BPF_K:
-                        ftest->code = BPF_S_JMP_JGT_K;
-                        break;
-                case BPF_JMP|BPF_JGT|BPF_X:
-                        ftest->code = BPF_S_JMP_JGT_X;
-                        break;
-                case BPF_JMP|BPF_JSET|BPF_K:
-                        ftest->code = BPF_S_JMP_JSET_K;
                         break;
-                case BPF_JMP|BPF_JSET|BPF_X:
-                        ftest->code = BPF_S_JMP_JSET_X;
-                        break;
-
-                default:
-                        return -EINVAL;
-                }
-
-                        /* for conditionals both must be safe */
-                switch (ftest->code) {
                 case BPF_S_JMP_JEQ_K:
                 case BPF_S_JMP_JEQ_X:
                 case BPF_S_JMP_JGE_K:
@@ -570,21 +595,22 @@ int sk_chk_filter(struct sock_filter *filter, int flen)
                 case BPF_S_JMP_JGT_X:
                 case BPF_S_JMP_JSET_X:
                 case BPF_S_JMP_JSET_K:
+                        /* for conditionals both must be safe */
                         if (pc + ftest->jt + 1 >= flen ||
                             pc + ftest->jf + 1 >= flen)
                                 return -EINVAL;
+                        break;
                 }
+                ftest->code = code;
         }
 
         /* last instruction must be a RET code */
         switch (filter[flen - 1].code) {
         case BPF_S_RET_K:
         case BPF_S_RET_A:
-                return 0;
-                break;
-                default:
-                        return -EINVAL;
-                }
+                return check_load_and_stores(filter, flen);
+        }
+        return -EINVAL;
 }
 EXPORT_SYMBOL(sk_chk_filter);
 
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 7f902cad10f8..e23c01be5a5b 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -706,7 +706,6 @@ static struct attribute *rx_queue_default_attrs[] = {
 static void rx_queue_release(struct kobject *kobj)
 {
         struct netdev_rx_queue *queue = to_rx_queue(kobj);
-        struct netdev_rx_queue *first = queue->first;
         struct rps_map *map;
         struct rps_dev_flow_table *flow_table;
 
@@ -723,10 +722,8 @@ static void rx_queue_release(struct kobject *kobj)
                 call_rcu(&flow_table->rcu, rps_dev_flow_table_release);
         }
 
-        if (atomic_dec_and_test(&first->count))
-                kfree(first);
-        else
-                memset(kobj, 0, sizeof(*kobj));
+        memset(kobj, 0, sizeof(*kobj));
+        dev_put(queue->dev);
 }
 
 static struct kobj_type rx_queue_ktype = {
@@ -738,7 +735,6 @@ static struct kobj_type rx_queue_ktype = {
 static int rx_queue_add_kobject(struct net_device *net, int index)
 {
         struct netdev_rx_queue *queue = net->_rx + index;
-        struct netdev_rx_queue *first = queue->first;
         struct kobject *kobj = &queue->kobj;
         int error = 0;
 
@@ -751,14 +747,16 @@ static int rx_queue_add_kobject(struct net_device *net, int index)
         }
 
         kobject_uevent(kobj, KOBJ_ADD);
-        atomic_inc(&first->count);
+        dev_hold(queue->dev);
 
         return error;
 }
+#endif /* CONFIG_RPS */
 
 int
 net_rx_queue_update_kobjects(struct net_device *net, int old_num, int new_num)
 {
+#ifdef CONFIG_RPS
         int i;
         int error = 0;
 
@@ -774,23 +772,423 @@ net_rx_queue_update_kobjects(struct net_device *net, int old_num, int new_num)
                 kobject_put(&net->_rx[i].kobj);
 
         return error;
+#else
+        return 0;
+#endif
+}
+
+#ifdef CONFIG_XPS
+/*
+ * netdev_queue sysfs structures and functions.
+ */
+struct netdev_queue_attribute {
+        struct attribute attr;
+        ssize_t (*show)(struct netdev_queue *queue,
+            struct netdev_queue_attribute *attr, char *buf);
+        ssize_t (*store)(struct netdev_queue *queue,
+            struct netdev_queue_attribute *attr, const char *buf, size_t len);
+};
+#define to_netdev_queue_attr(_attr) container_of(_attr,         \
+    struct netdev_queue_attribute, attr)
+
+#define to_netdev_queue(obj) container_of(obj, struct netdev_queue, kobj)
+
+static ssize_t netdev_queue_attr_show(struct kobject *kobj,
+                                      struct attribute *attr, char *buf)
+{
+        struct netdev_queue_attribute *attribute = to_netdev_queue_attr(attr);
+        struct netdev_queue *queue = to_netdev_queue(kobj);
+
+        if (!attribute->show)
+                return -EIO;
+
+        return attribute->show(queue, attribute, buf);
 }
 
-static int rx_queue_register_kobjects(struct net_device *net)
+static ssize_t netdev_queue_attr_store(struct kobject *kobj,
+                                       struct attribute *attr,
+                                       const char *buf, size_t count)
 {
+        struct netdev_queue_attribute *attribute = to_netdev_queue_attr(attr);
+        struct netdev_queue *queue = to_netdev_queue(kobj);
+
+        if (!attribute->store)
+                return -EIO;
+
+        return attribute->store(queue, attribute, buf, count);
+}
+
+static const struct sysfs_ops netdev_queue_sysfs_ops = {
+        .show = netdev_queue_attr_show,
+        .store = netdev_queue_attr_store,
+};
+
+static inline unsigned int get_netdev_queue_index(struct netdev_queue *queue)
+{
+        struct net_device *dev = queue->dev;
+        int i;
+
+        for (i = 0; i < dev->num_tx_queues; i++)
+                if (queue == &dev->_tx[i])
+                        break;
+
+        BUG_ON(i >= dev->num_tx_queues);
+
+        return i;
+}
+
+
+static ssize_t show_xps_map(struct netdev_queue *queue,
+                            struct netdev_queue_attribute *attribute, char *buf)
+{
+        struct net_device *dev = queue->dev;
+        struct xps_dev_maps *dev_maps;
+        cpumask_var_t mask;
+        unsigned long index;
+        size_t len = 0;
+        int i;
+
+        if (!zalloc_cpumask_var(&mask, GFP_KERNEL))
+                return -ENOMEM;
+
+        index = get_netdev_queue_index(queue);
+
+        rcu_read_lock();
+        dev_maps = rcu_dereference(dev->xps_maps);
+        if (dev_maps) {
+                for_each_possible_cpu(i) {
+                        struct xps_map *map =
+                            rcu_dereference(dev_maps->cpu_map[i]);
+                        if (map) {
+                                int j;
+                                for (j = 0; j < map->len; j++) {
+                                        if (map->queues[j] == index) {
+                                                cpumask_set_cpu(i, mask);
+                                                break;
+                                        }
+                                }
+                        }
+                }
+        }
+        rcu_read_unlock();
+
+        len += cpumask_scnprintf(buf + len, PAGE_SIZE, mask);
+        if (PAGE_SIZE - len < 3) {
+                free_cpumask_var(mask);
+                return -EINVAL;
+        }
+
+        free_cpumask_var(mask);
+        len += sprintf(buf + len, "\n");
+        return len;
+}
+
+static void xps_map_release(struct rcu_head *rcu)
+{
+        struct xps_map *map = container_of(rcu, struct xps_map, rcu);
+
+        kfree(map);
+}
+
+static void xps_dev_maps_release(struct rcu_head *rcu)
+{
+        struct xps_dev_maps *dev_maps =
+            container_of(rcu, struct xps_dev_maps, rcu);
+
+        kfree(dev_maps);
+}
+
+static DEFINE_MUTEX(xps_map_mutex);
+#define xmap_dereference(P)             \
+        rcu_dereference_protected((P), lockdep_is_held(&xps_map_mutex))
+
+static ssize_t store_xps_map(struct netdev_queue *queue,
+                      struct netdev_queue_attribute *attribute,
+                      const char *buf, size_t len)
+{
+        struct net_device *dev = queue->dev;
+        cpumask_var_t mask;
+        int err, i, cpu, pos, map_len, alloc_len, need_set;
+        unsigned long index;
+        struct xps_map *map, *new_map;
+        struct xps_dev_maps *dev_maps, *new_dev_maps;
+        int nonempty = 0;
+        int numa_node = -2;
+
+        if (!capable(CAP_NET_ADMIN))
+                return -EPERM;
+
+        if (!alloc_cpumask_var(&mask, GFP_KERNEL))
+                return -ENOMEM;
+
+        index = get_netdev_queue_index(queue);
+
+        err = bitmap_parse(buf, len, cpumask_bits(mask), nr_cpumask_bits);
+        if (err) {
+                free_cpumask_var(mask);
+                return err;
+        }
+
+        new_dev_maps = kzalloc(max_t(unsigned,
+            XPS_DEV_MAPS_SIZE, L1_CACHE_BYTES), GFP_KERNEL);
+        if (!new_dev_maps) {
+                free_cpumask_var(mask);
+                return -ENOMEM;
+        }
+
+        mutex_lock(&xps_map_mutex);
+
+        dev_maps = xmap_dereference(dev->xps_maps);
+
+        for_each_possible_cpu(cpu) {
+                map = dev_maps ?
+                        xmap_dereference(dev_maps->cpu_map[cpu]) : NULL;
+                new_map = map;
+                if (map) {
+                        for (pos = 0; pos < map->len; pos++)
+                                if (map->queues[pos] == index)
+                                        break;
+                        map_len = map->len;
+                        alloc_len = map->alloc_len;
+                } else
+                        pos = map_len = alloc_len = 0;
+
+                need_set = cpu_isset(cpu, *mask) && cpu_online(cpu);
+#ifdef CONFIG_NUMA
+                if (need_set) {
+                        if (numa_node == -2)
+                                numa_node = cpu_to_node(cpu);
+                        else if (numa_node != cpu_to_node(cpu))
+                                numa_node = -1;
+                }
+#endif
+                if (need_set && pos >= map_len) {
+                        /* Need to add queue to this CPU's map */
+                        if (map_len >= alloc_len) {
+                                alloc_len = alloc_len ?
+                                    2 * alloc_len : XPS_MIN_MAP_ALLOC;
+                                new_map = kzalloc_node(XPS_MAP_SIZE(alloc_len),
+                                                       GFP_KERNEL,
+                                                       cpu_to_node(cpu));
+                                if (!new_map)
+                                        goto error;
+                                new_map->alloc_len = alloc_len;
+                                for (i = 0; i < map_len; i++)
+                                        new_map->queues[i] = map->queues[i];
+                                new_map->len = map_len;
+                        }
+                        new_map->queues[new_map->len++] = index;
+                } else if (!need_set && pos < map_len) {
+                        /* Need to remove queue from this CPU's map */
+                        if (map_len > 1)
+                                new_map->queues[pos] =
+                                    new_map->queues[--new_map->len];
+                        else
+                                new_map = NULL;
+                }
+                RCU_INIT_POINTER(new_dev_maps->cpu_map[cpu], new_map);
+        }
+
+        /* Cleanup old maps */
+        for_each_possible_cpu(cpu) {
+                map = dev_maps ?
+                        xmap_dereference(dev_maps->cpu_map[cpu]) : NULL;
+                if (map && xmap_dereference(new_dev_maps->cpu_map[cpu]) != map)
+                        call_rcu(&map->rcu, xps_map_release);
+                if (new_dev_maps->cpu_map[cpu])
+                        nonempty = 1;
+        }
+
+        if (nonempty)
+                rcu_assign_pointer(dev->xps_maps, new_dev_maps);
+        else {
+                kfree(new_dev_maps);
+                rcu_assign_pointer(dev->xps_maps, NULL);
+        }
+
+        if (dev_maps)
+                call_rcu(&dev_maps->rcu, xps_dev_maps_release);
+
+        netdev_queue_numa_node_write(queue, (numa_node >= 0) ? numa_node :
+                                            NUMA_NO_NODE);
+
+        mutex_unlock(&xps_map_mutex);
+
+        free_cpumask_var(mask);
+        return len;
+
+error:
+        mutex_unlock(&xps_map_mutex);
+
+        if (new_dev_maps)
+                for_each_possible_cpu(i)
+                        kfree(rcu_dereference_protected(
+                                new_dev_maps->cpu_map[i],
+                                1));
+        kfree(new_dev_maps);
+        free_cpumask_var(mask);
+        return -ENOMEM;
+}
+
+static struct netdev_queue_attribute xps_cpus_attribute =
+    __ATTR(xps_cpus, S_IRUGO | S_IWUSR, show_xps_map, store_xps_map);
+
+static struct attribute *netdev_queue_default_attrs[] = {
+        &xps_cpus_attribute.attr,
+        NULL
+};
+
+static void netdev_queue_release(struct kobject *kobj)
+{
+        struct netdev_queue *queue = to_netdev_queue(kobj);
+        struct net_device *dev = queue->dev;
+        struct xps_dev_maps *dev_maps;
+        struct xps_map *map;
+        unsigned long index;
+        int i, pos, nonempty = 0;
+
+        index = get_netdev_queue_index(queue);
+
+        mutex_lock(&xps_map_mutex);
+        dev_maps = xmap_dereference(dev->xps_maps);
+
+        if (dev_maps) {
+                for_each_possible_cpu(i) {
+                        map = xmap_dereference(dev_maps->cpu_map[i]);
+                        if (!map)
+                                continue;
+
+                        for (pos = 0; pos < map->len; pos++)
+                                if (map->queues[pos] == index)
+                                        break;
+
+                        if (pos < map->len) {
+                                if (map->len > 1)
+                                        map->queues[pos] =
+                                            map->queues[--map->len];
+                                else {
+                                        RCU_INIT_POINTER(dev_maps->cpu_map[i],
+                                            NULL);
+                                        call_rcu(&map->rcu, xps_map_release);
+                                        map = NULL;
+                                }
+                        }
+                        if (map)
+                                nonempty = 1;
+                }
+
+                if (!nonempty) {
+                        RCU_INIT_POINTER(dev->xps_maps, NULL);
+                        call_rcu(&dev_maps->rcu, xps_dev_maps_release);
+                }
+        }
+
+        mutex_unlock(&xps_map_mutex);
+
+        memset(kobj, 0, sizeof(*kobj));
+        dev_put(queue->dev);
+}
+
+static struct kobj_type netdev_queue_ktype = {
+        .sysfs_ops = &netdev_queue_sysfs_ops,
+        .release = netdev_queue_release,
+        .default_attrs = netdev_queue_default_attrs,
+};
+
+static int netdev_queue_add_kobject(struct net_device *net, int index)
+{
+        struct netdev_queue *queue = net->_tx + index;
+        struct kobject *kobj = &queue->kobj;
+        int error = 0;
+
+        kobj->kset = net->queues_kset;
+        error = kobject_init_and_add(kobj, &netdev_queue_ktype, NULL,
+            "tx-%u", index);
+        if (error) {
+                kobject_put(kobj);
+                return error;
+        }
+
+        kobject_uevent(kobj, KOBJ_ADD);
+        dev_hold(queue->dev);
+
+        return error;
+}
+#endif /* CONFIG_XPS */
+
+int
+netdev_queue_update_kobjects(struct net_device *net, int old_num, int new_num)
+{
+#ifdef CONFIG_XPS
+        int i;
+        int error = 0;
+
+        for (i = old_num; i < new_num; i++) {
+                error = netdev_queue_add_kobject(net, i);
+                if (error) {
+                        new_num = old_num;
+                        break;
+                }
+        }
+
+        while (--i >= new_num)
+                kobject_put(&net->_tx[i].kobj);
+
+        return error;
+#else
+        return 0;
+#endif
+}
+
+static int register_queue_kobjects(struct net_device *net)
+{
+        int error = 0, txq = 0, rxq = 0, real_rx = 0, real_tx = 0;
+
+#if defined(CONFIG_RPS) || defined(CONFIG_XPS)
         net->queues_kset = kset_create_and_add("queues",
             NULL, &net->dev.kobj);
         if (!net->queues_kset)
                 return -ENOMEM;
-        return net_rx_queue_update_kobjects(net, 0, net->real_num_rx_queues);
+#endif
+
+#ifdef CONFIG_RPS
+        real_rx = net->real_num_rx_queues;
+#endif
+        real_tx = net->real_num_tx_queues;
+
+        error = net_rx_queue_update_kobjects(net, 0, real_rx);
+        if (error)
+                goto error;
+        rxq = real_rx;
+
+        error = netdev_queue_update_kobjects(net, 0, real_tx);
+        if (error)
+                goto error;
+        txq = real_tx;
+
+        return 0;
+
+error:
+        netdev_queue_update_kobjects(net, txq, 0);
+        net_rx_queue_update_kobjects(net, rxq, 0);
+        return error;
 }
 
-static void rx_queue_remove_kobjects(struct net_device *net)
+static void remove_queue_kobjects(struct net_device *net)
 {
-        net_rx_queue_update_kobjects(net, net->real_num_rx_queues, 0);
+        int real_rx = 0, real_tx = 0;
+
+#ifdef CONFIG_RPS
+        real_rx = net->real_num_rx_queues;
+#endif
+        real_tx = net->real_num_tx_queues;
+
+        net_rx_queue_update_kobjects(net, real_rx, 0);
+        netdev_queue_update_kobjects(net, real_tx, 0);
+#if defined(CONFIG_RPS) || defined(CONFIG_XPS)
         kset_unregister(net->queues_kset);
+#endif
 }
-#endif /* CONFIG_RPS */
 
 static const void *net_current_ns(void)
 {
@@ -889,9 +1287,7 @@ void netdev_unregister_kobject(struct net_device * net)
 
         kobject_get(&dev->kobj);
 
-#ifdef CONFIG_RPS
-        rx_queue_remove_kobjects(net);
-#endif
+        remove_queue_kobjects(net);
 
         device_del(dev);
 }
@@ -930,13 +1326,11 @@ int netdev_register_kobject(struct net_device *net)
         if (error)
                 return error;
 
-#ifdef CONFIG_RPS
-        error = rx_queue_register_kobjects(net);
+        error = register_queue_kobjects(net);
         if (error) {
                 device_del(dev);
                 return error;
         }
-#endif
 
         return error;
 }
diff --git a/net/core/net-sysfs.h b/net/core/net-sysfs.h
index 778e1571548d..bd7751ec1c4d 100644
--- a/net/core/net-sysfs.h
+++ b/net/core/net-sysfs.h
@@ -4,8 +4,8 @@
 int netdev_kobject_init(void);
 int netdev_register_kobject(struct net_device *);
 void netdev_unregister_kobject(struct net_device *);
-#ifdef CONFIG_RPS
 int net_rx_queue_update_kobjects(struct net_device *, int old_num, int new_num);
-#endif
+int netdev_queue_update_kobjects(struct net_device *net,
+                                 int old_num, int new_num);
 
 #endif
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 4e98ffac3af0..ee38acb6d463 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -76,8 +76,7 @@ static void queue_process(struct work_struct *work)
 
                 local_irq_save(flags);
                 __netif_tx_lock(txq, smp_processor_id());
-                if (netif_tx_queue_stopped(txq) ||
-                    netif_tx_queue_frozen(txq) ||
+                if (netif_tx_queue_frozen_or_stopped(txq) ||
                     ops->ndo_start_xmit(skb, dev) != NETDEV_TX_OK) {
                         skb_queue_head(&npinfo->txq, skb);
                         __netif_tx_unlock(txq);
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 33bc3823ac6f..18fe20dacc60 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -378,6 +378,7 @@ struct pktgen_dev {
 
         u16 queue_map_min;
         u16 queue_map_max;
+        __u32 skb_priority;     /* skb priority field */
         int node;               /* Memory node */
 
 #ifdef CONFIG_XFRM
@@ -394,6 +395,8 @@ struct pktgen_hdr {
         __be32 tv_usec;
 };
 
+static bool pktgen_exiting __read_mostly;
+
 struct pktgen_thread {
         spinlock_t if_lock;             /* for list of devices */
         struct list_head if_list;       /* All device here */
@@ -547,6 +550,10 @@ static int pktgen_if_show(struct seq_file *seq, void *v)
                    pkt_dev->queue_map_min,
                    pkt_dev->queue_map_max);
 
+        if (pkt_dev->skb_priority)
+                seq_printf(seq, "     skb_priority: %u\n",
+                           pkt_dev->skb_priority);
+
         if (pkt_dev->flags & F_IPV6) {
                 char b1[128], b2[128], b3[128];
                 fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);
@@ -1711,6 +1718,18 @@ static ssize_t pktgen_if_write(struct file *file,
                 return count;
         }
 
+        if (!strcmp(name, "skb_priority")) {
+                len = num_arg(&user_buffer[i], 9, &value);
+                if (len < 0)
+                        return len;
+
+                i += len;
+                pkt_dev->skb_priority = value;
+                sprintf(pg_result, "OK: skb_priority=%i",
+                        pkt_dev->skb_priority);
+                return count;
+        }
+
         sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
         return -EINVAL;
 }
@@ -2641,6 +2660,7 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
                 sprintf(pkt_dev->result, "No memory");
                 return NULL;
         }
+        prefetchw(skb->data);
 
         skb_reserve(skb, datalen);
 
@@ -2671,6 +2691,8 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
         skb->transport_header = skb->network_header + sizeof(struct iphdr);
         skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
         skb_set_queue_mapping(skb, queue_map);
+        skb->priority = pkt_dev->skb_priority;
+
         iph = ip_hdr(skb);
         udph = udp_hdr(skb);
 
@@ -2986,6 +3008,7 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
                 sprintf(pkt_dev->result, "No memory");
                 return NULL;
         }
+        prefetchw(skb->data);
 
         skb_reserve(skb, 16);
 
@@ -3016,6 +3039,7 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
         skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
         skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
         skb_set_queue_mapping(skb, queue_map);
+        skb->priority = pkt_dev->skb_priority;
         iph = ipv6_hdr(skb);
         udph = udp_hdr(skb);
 
@@ -3431,11 +3455,6 @@ static void pktgen_rem_thread(struct pktgen_thread *t)
 
         remove_proc_entry(t->tsk->comm, pg_proc_dir);
 
-        mutex_lock(&pktgen_thread_lock);
-
-        list_del(&t->th_list);
-
-        mutex_unlock(&pktgen_thread_lock);
 }
 
 static void pktgen_resched(struct pktgen_dev *pkt_dev)
@@ -3510,7 +3529,7 @@ static void pktgen_xmit(struct pktgen_dev *pkt_dev)
 
         __netif_tx_lock_bh(txq);
 
-        if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq))) {
+        if (unlikely(netif_tx_queue_frozen_or_stopped(txq))) {
                 ret = NETDEV_TX_BUSY;
                 pkt_dev->last_ok = 0;
                 goto unlock;
@@ -3582,6 +3601,8 @@ static int pktgen_thread_worker(void *arg)
                 pkt_dev = next_to_run(t);
 
                 if (unlikely(!pkt_dev && t->control == 0)) {
+                        if (pktgen_exiting)
+                                break;
                         wait_event_interruptible_timeout(t->queue,
                                                          t->control != 0,
                                                          HZ/10);
@@ -3634,6 +3655,13 @@ static int pktgen_thread_worker(void *arg)
         pr_debug("%s removing thread\n", t->tsk->comm);
         pktgen_rem_thread(t);
 
+        /* Wait for kthread_stop */
+        while (!kthread_should_stop()) {
+                set_current_state(TASK_INTERRUPTIBLE);
+                schedule();
+        }
+        __set_current_state(TASK_RUNNING);
+
         return 0;
 }
 
@@ -3908,6 +3936,7 @@ static void __exit pg_cleanup(void)
         struct list_head *q, *n;
 
         /* Stop all interfaces & threads */
+        pktgen_exiting = true;
 
         list_for_each_safe(q, n, &pktgen_threads) {
                 t = list_entry(q, struct pktgen_thread, th_list);
diff --git a/net/core/request_sock.c b/net/core/request_sock.c
index fceeb37d7161..182236b2510a 100644
--- a/net/core/request_sock.c
+++ b/net/core/request_sock.c
@@ -33,6 +33,7 @@
  * Note : Dont forget somaxconn that may limit backlog too.
  */
 int sysctl_max_syn_backlog = 256;
+EXPORT_SYMBOL(sysctl_max_syn_backlog);
 
 int reqsk_queue_alloc(struct request_sock_queue *queue,
                       unsigned int nr_table_entries)
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 841c287ef40a..750db57f3bb3 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -362,6 +362,95 @@ static size_t rtnl_link_get_size(const struct net_device *dev)
         return size;
 }
 
+static LIST_HEAD(rtnl_af_ops);
+
+static const struct rtnl_af_ops *rtnl_af_lookup(const int family)
+{
+        const struct rtnl_af_ops *ops;
+
+        list_for_each_entry(ops, &rtnl_af_ops, list) {
+                if (ops->family == family)
+                        return ops;
+        }
+
+        return NULL;
+}
+
+/**
+ * __rtnl_af_register - Register rtnl_af_ops with rtnetlink.
+ * @ops: struct rtnl_af_ops * to register
+ *
+ * The caller must hold the rtnl_mutex.
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int __rtnl_af_register(struct rtnl_af_ops *ops)
+{
+        list_add_tail(&ops->list, &rtnl_af_ops);
+        return 0;
+}
+EXPORT_SYMBOL_GPL(__rtnl_af_register);
+
+/**
+ * rtnl_af_register - Register rtnl_af_ops with rtnetlink.
+ * @ops: struct rtnl_af_ops * to register
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int rtnl_af_register(struct rtnl_af_ops *ops)
+{
+        int err;
+
+        rtnl_lock();
+        err = __rtnl_af_register(ops);
+        rtnl_unlock();
+        return err;
+}
+EXPORT_SYMBOL_GPL(rtnl_af_register);
+
+/**
+ * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
+ * @ops: struct rtnl_af_ops * to unregister
+ *
+ * The caller must hold the rtnl_mutex.
+ */
+void __rtnl_af_unregister(struct rtnl_af_ops *ops)
+{
+        list_del(&ops->list);
+}
+EXPORT_SYMBOL_GPL(__rtnl_af_unregister);
+
+/**
+ * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
+ * @ops: struct rtnl_af_ops * to unregister
+ */
+void rtnl_af_unregister(struct rtnl_af_ops *ops)
+{
+        rtnl_lock();
+        __rtnl_af_unregister(ops);
+        rtnl_unlock();
+}
+EXPORT_SYMBOL_GPL(rtnl_af_unregister);
+
+static size_t rtnl_link_get_af_size(const struct net_device *dev)
+{
+        struct rtnl_af_ops *af_ops;
+        size_t size;
+
+        /* IFLA_AF_SPEC */
+        size = nla_total_size(sizeof(struct nlattr));
+
+        list_for_each_entry(af_ops, &rtnl_af_ops, list) {
+                if (af_ops->get_link_af_size) {
+                        /* AF_* + nested data */
+                        size += nla_total_size(sizeof(struct nlattr)) +
+                                af_ops->get_link_af_size(dev);
+                }
+        }
+
+        return size;
+}
+
 static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev)
 {
         const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
@@ -671,7 +760,8 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev)
                + nla_total_size(4) /* IFLA_NUM_VF */
                + rtnl_vfinfo_size(dev) /* IFLA_VFINFO_LIST */
                + rtnl_port_size(dev) /* IFLA_VF_PORTS + IFLA_PORT_SELF */
-               + rtnl_link_get_size(dev); /* IFLA_LINKINFO */
+               + rtnl_link_get_size(dev) /* IFLA_LINKINFO */
+               + rtnl_link_get_af_size(dev); /* IFLA_AF_SPEC */
 }
 
 static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev)
@@ -757,7 +847,8 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
         struct nlmsghdr *nlh;
         struct rtnl_link_stats64 temp;
         const struct rtnl_link_stats64 *stats;
-        struct nlattr *attr;
+        struct nlattr *attr, *af_spec;
+        struct rtnl_af_ops *af_ops;
 
         nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags);
         if (nlh == NULL)
@@ -866,6 +957,36 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
                         goto nla_put_failure;
         }
 
+        if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC)))
+                goto nla_put_failure;
+
+        list_for_each_entry(af_ops, &rtnl_af_ops, list) {
+                if (af_ops->fill_link_af) {
+                        struct nlattr *af;
+                        int err;
+
+                        if (!(af = nla_nest_start(skb, af_ops->family)))
+                                goto nla_put_failure;
+
+                        err = af_ops->fill_link_af(skb, dev);
+
+                        /*
+                         * Caller may return ENODATA to indicate that there
+                         * was no data to be dumped. This is not an error, it
+                         * means we should trim the attribute header and
+                         * continue.
+                         */
+                        if (err == -ENODATA)
+                                nla_nest_cancel(skb, af);
+                        else if (err < 0)
+                                goto nla_put_failure;
+
+                        nla_nest_end(skb, af);
+                }
+        }
+
+        nla_nest_end(skb, af_spec);
+
         return nlmsg_end(skb, nlh);
 
 nla_put_failure:
@@ -924,6 +1045,7 @@ const struct nla_policy ifla_policy[IFLA_MAX+1] = {
         [IFLA_VFINFO_LIST]      = {. type = NLA_NESTED },
         [IFLA_VF_PORTS]         = { .type = NLA_NESTED },
         [IFLA_PORT_SELF]        = { .type = NLA_NESTED },
+        [IFLA_AF_SPEC]          = { .type = NLA_NESTED },
 };
 EXPORT_SYMBOL(ifla_policy);
 
@@ -985,6 +1107,28 @@ static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[])
                         return -EINVAL;
         }
 
+        if (tb[IFLA_AF_SPEC]) {
+                struct nlattr *af;
+                int rem, err;
+
+                nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) {
+                        const struct rtnl_af_ops *af_ops;
+
+                        if (!(af_ops = rtnl_af_lookup(nla_type(af))))
+                                return -EAFNOSUPPORT;
+
+                        if (!af_ops->set_link_af)
+                                return -EOPNOTSUPP;
+
+                        if (af_ops->validate_link_af) {
+                                err = af_ops->validate_link_af(dev,
+                                                        tb[IFLA_AF_SPEC]);
+                                if (err < 0)
+                                        return err;
+                        }
+                }
+        }
+
         return 0;
 }
 
@@ -1225,6 +1369,24 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
                         goto errout;
                 modified = 1;
         }
+
+        if (tb[IFLA_AF_SPEC]) {
+                struct nlattr *af;
+                int rem;
+
+                nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) {
+                        const struct rtnl_af_ops *af_ops;
+
+                        if (!(af_ops = rtnl_af_lookup(nla_type(af))))
+                                BUG();
+
+                        err = af_ops->set_link_af(dev, af);
+                        if (err < 0)
+                                goto errout;
+
+                        modified = 1;
+                }
+        }
         err = 0;
 
 errout:
diff --git a/net/core/scm.c b/net/core/scm.c
index 413cab89017d..bbe454450801 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -79,10 +79,11 @@ static int scm_fp_copy(struct cmsghdr *cmsg, struct scm_fp_list **fplp)
                         return -ENOMEM;
                 *fplp = fpl;
                 fpl->count = 0;
+                fpl->max = SCM_MAX_FD;
         }
         fpp = &fpl->fp[fpl->count];
 
-        if (fpl->count + num > SCM_MAX_FD)
+        if (fpl->count + num > fpl->max)
                 return -EINVAL;
 
         /*
@@ -331,11 +332,12 @@ struct scm_fp_list *scm_fp_dup(struct scm_fp_list *fpl)
         if (!fpl)
                 return NULL;
 
-        new_fpl = kmalloc(sizeof(*fpl), GFP_KERNEL);
+        new_fpl = kmemdup(fpl, offsetof(struct scm_fp_list, fp[fpl->count]),
+                          GFP_KERNEL);
         if (new_fpl) {
-                for (i=fpl->count-1; i>=0; i--)
+                for (i = 0; i < fpl->count; i++)
                         get_file(fpl->fp[i]);
-                memcpy(new_fpl, fpl, sizeof(*fpl));
+                new_fpl->max = new_fpl->count;
         }
         return new_fpl;
 }
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 104f8444754a..19d6c21220fd 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -778,6 +778,28 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
 
         size = SKB_DATA_ALIGN(size);
 
+        /* Check if we can avoid taking references on fragments if we own
+         * the last reference on skb->head. (see skb_release_data())
+         */
+        if (!skb->cloned)
+                fastpath = true;
+        else {
+                int delta = skb->nohdr ? (1 << SKB_DATAREF_SHIFT) + 1 : 1;
+
+                fastpath = atomic_read(&skb_shinfo(skb)->dataref) == delta;
+        }
+
+        if (fastpath &&
+            size + sizeof(struct skb_shared_info) <= ksize(skb->head)) {
+                memmove(skb->head + size, skb_shinfo(skb),
+                        offsetof(struct skb_shared_info,
+                                 frags[skb_shinfo(skb)->nr_frags]));
+                memmove(skb->head + nhead, skb->head,
+                        skb_tail_pointer(skb) - skb->head);
+                off = nhead;
+                goto adjust_others;
+        }
+
         data = kmalloc(size + sizeof(struct skb_shared_info), gfp_mask);
         if (!data)
                 goto nodata;
@@ -791,17 +813,6 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
                skb_shinfo(skb),
                offsetof(struct skb_shared_info, frags[skb_shinfo(skb)->nr_frags]));
 
-        /* Check if we can avoid taking references on fragments if we own
-         * the last reference on skb->head. (see skb_release_data())
-         */
-        if (!skb->cloned)
-                fastpath = true;
-        else {
-                int delta = skb->nohdr ? (1 << SKB_DATAREF_SHIFT) + 1 : 1;
-
-                fastpath = atomic_read(&skb_shinfo(skb)->dataref) == delta;
-        }
-
         if (fastpath) {
                 kfree(skb->head);
         } else {
@@ -816,6 +827,7 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
         off = (data + nhead) - skb->head;
 
         skb->head     = data;
+adjust_others:
         skb->data    += off;
 #ifdef NET_SKBUFF_DATA_USES_OFFSET
         skb->end      = size;
@@ -1812,7 +1824,7 @@ void skb_copy_and_csum_dev(const struct sk_buff *skb, u8 *to)
         long csstart;
 
         if (skb->ip_summed == CHECKSUM_PARTIAL)
-                csstart = skb->csum_start - skb_headroom(skb);
+                csstart = skb_checksum_start_offset(skb);
         else
                 csstart = skb_headlen(skb);
 
diff --git a/net/core/sock.c b/net/core/sock.c
index e5af8d5d5b50..a6b9e8061f34 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -992,17 +992,18 @@ static inline void sock_lock_init(struct sock *sk)
 /*
  * Copy all fields from osk to nsk but nsk->sk_refcnt must not change yet,
  * even temporarly, because of RCU lookups. sk_node should also be left as is.
+ * We must not copy fields between sk_dontcopy_begin and sk_dontcopy_end
  */
 static void sock_copy(struct sock *nsk, const struct sock *osk)
 {
 #ifdef CONFIG_SECURITY_NETWORK
         void *sptr = nsk->sk_security;
 #endif
-        BUILD_BUG_ON(offsetof(struct sock, sk_copy_start) !=
-                     sizeof(osk->sk_node) + sizeof(osk->sk_refcnt) +
-                     sizeof(osk->sk_tx_queue_mapping));
-        memcpy(&nsk->sk_copy_start, &osk->sk_copy_start,
-               osk->sk_prot->obj_size - offsetof(struct sock, sk_copy_start));
+        memcpy(nsk, osk, offsetof(struct sock, sk_dontcopy_begin));
+
+        memcpy(&nsk->sk_dontcopy_end, &osk->sk_dontcopy_end,
+               osk->sk_prot->obj_size - offsetof(struct sock, sk_dontcopy_end));
+
 #ifdef CONFIG_SECURITY_NETWORK
         nsk->sk_security = sptr;
         security_sk_clone(osk, nsk);
diff --git a/net/core/timestamping.c b/net/core/timestamping.c
index c19bb4ee405e..7e7ca375d431 100644
--- a/net/core/timestamping.c
+++ b/net/core/timestamping.c
@@ -26,12 +26,12 @@ static struct sock_filter ptp_filter[] = {
         PTP_FILTER
 };
 
-static unsigned int classify(struct sk_buff *skb)
+static unsigned int classify(const struct sk_buff *skb)
 {
         if (likely(skb->dev &&
                    skb->dev->phydev &&
                    skb->dev->phydev->drv))
-                return sk_run_filter(skb, ptp_filter, ARRAY_SIZE(ptp_filter));
+                return sk_run_filter(skb, ptp_filter);
         else
                 return PTP_CLASS_NONE;
 }
diff --git a/net/dccp/Makefile b/net/dccp/Makefile
index 2991efcc8dea..5c8362b037ed 100644
--- a/net/dccp/Makefile
+++ b/net/dccp/Makefile
@@ -1,7 +1,7 @@
 obj-$(CONFIG_IP_DCCP) += dccp.o dccp_ipv4.o
 
-dccp-y := ccid.o feat.o input.o minisocks.o options.o output.o proto.o timer.o
-
+dccp-y := ccid.o feat.o input.o minisocks.o options.o output.o proto.o timer.o \
+          qpolicy.o
 #
 # CCID algorithms to be used by dccp.ko
 #
diff --git a/net/dccp/ackvec.c b/net/dccp/ackvec.c
index 92a6fcb40d7d..25b7a8d1ad58 100644
--- a/net/dccp/ackvec.c
+++ b/net/dccp/ackvec.c
@@ -1,444 +1,375 @@
 /*
  *  net/dccp/ackvec.c
  *
- *  An implementation of the DCCP protocol
+ *  An implementation of Ack Vectors for the DCCP protocol
+ *  Copyright (c) 2007 University of Aberdeen, Scotland, UK
  *  Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
  *
  *      This program is free software; you can redistribute it and/or modify it
  *      under the terms of the GNU General Public License as published by the
  *      Free Software Foundation; version 2 of the License;
  */
-
-#include "ackvec.h"
 #include "dccp.h"
-
-#include <linux/init.h>
-#include <linux/errno.h>
 #include <linux/kernel.h>
-#include <linux/skbuff.h>
 #include <linux/slab.h>
 
-#include <net/sock.h>
-
 static struct kmem_cache *dccp_ackvec_slab;
 static struct kmem_cache *dccp_ackvec_record_slab;
 
-static struct dccp_ackvec_record *dccp_ackvec_record_new(void)
+struct dccp_ackvec *dccp_ackvec_alloc(const gfp_t priority)
 {
-        struct dccp_ackvec_record *avr =
-                        kmem_cache_alloc(dccp_ackvec_record_slab, GFP_ATOMIC);
+        struct dccp_ackvec *av = kmem_cache_zalloc(dccp_ackvec_slab, priority);
 
-        if (avr != NULL)
-                INIT_LIST_HEAD(&avr->avr_node);
-
-        return avr;
+        if (av != NULL) {
+                av->av_buf_head = av->av_buf_tail = DCCPAV_MAX_ACKVEC_LEN - 1;
+                INIT_LIST_HEAD(&av->av_records);
+        }
+        return av;
 }
 
-static void dccp_ackvec_record_delete(struct dccp_ackvec_record *avr)
+static void dccp_ackvec_purge_records(struct dccp_ackvec *av)
 {
-        if (unlikely(avr == NULL))
-                return;
-        /* Check if deleting a linked record */
-        WARN_ON(!list_empty(&avr->avr_node));
-        kmem_cache_free(dccp_ackvec_record_slab, avr);
+        struct dccp_ackvec_record *cur, *next;
+
+        list_for_each_entry_safe(cur, next, &av->av_records, avr_node)
+                kmem_cache_free(dccp_ackvec_record_slab, cur);
+        INIT_LIST_HEAD(&av->av_records);
 }
 
-static void dccp_ackvec_insert_avr(struct dccp_ackvec *av,
-                                   struct dccp_ackvec_record *avr)
+void dccp_ackvec_free(struct dccp_ackvec *av)
 {
-        /*
-         * AVRs are sorted by seqno. Since we are sending them in order, we
-         * just add the AVR at the head of the list.
-         * -sorbo.
-         */
-        if (!list_empty(&av->av_records)) {
-                const struct dccp_ackvec_record *head =
-                                        list_entry(av->av_records.next,
-                                                   struct dccp_ackvec_record,
-                                                   avr_node);
-                BUG_ON(before48(avr->avr_ack_seqno, head->avr_ack_seqno));
+        if (likely(av != NULL)) {
+                dccp_ackvec_purge_records(av);
+                kmem_cache_free(dccp_ackvec_slab, av);
         }
-
-        list_add(&avr->avr_node, &av->av_records);
 }
 
-int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)
+/**
+ * dccp_ackvec_update_records  -  Record information about sent Ack Vectors
+ * @av:         Ack Vector records to update
+ * @seqno:      Sequence number of the packet carrying the Ack Vector just sent
+ * @nonce_sum:  The sum of all buffer nonces contained in the Ack Vector
+ */
+int dccp_ackvec_update_records(struct dccp_ackvec *av, u64 seqno, u8 nonce_sum)
 {
-        struct dccp_sock *dp = dccp_sk(sk);
-        struct dccp_ackvec *av = dp->dccps_hc_rx_ackvec;
-        /* Figure out how many options do we need to represent the ackvec */
-        const u8 nr_opts = DIV_ROUND_UP(av->av_vec_len, DCCP_SINGLE_OPT_MAXLEN);
-        u16 len = av->av_vec_len + 2 * nr_opts, i;
-        u32 elapsed_time;
-        const unsigned char *tail, *from;
-        unsigned char *to;
         struct dccp_ackvec_record *avr;
-        suseconds_t delta;
-
-        if (DCCP_SKB_CB(skb)->dccpd_opt_len + len > DCCP_MAX_OPT_LEN)
-                return -1;
-
-        delta = ktime_us_delta(ktime_get_real(), av->av_time);
-        elapsed_time = delta / 10;
 
-        if (elapsed_time != 0 &&
-            dccp_insert_option_elapsed_time(skb, elapsed_time))
-                return -1;
-
-        avr = dccp_ackvec_record_new();
+        avr = kmem_cache_alloc(dccp_ackvec_record_slab, GFP_ATOMIC);
         if (avr == NULL)
-                return -1;
-
-        DCCP_SKB_CB(skb)->dccpd_opt_len += len;
-
-        to   = skb_push(skb, len);
-        len  = av->av_vec_len;
-        from = av->av_buf + av->av_buf_head;
-        tail = av->av_buf + DCCP_MAX_ACKVEC_LEN;
-
-        for (i = 0; i < nr_opts; ++i) {
-                int copylen = len;
-
-                if (len > DCCP_SINGLE_OPT_MAXLEN)
-                        copylen = DCCP_SINGLE_OPT_MAXLEN;
-
-                *to++ = DCCPO_ACK_VECTOR_0;
-                *to++ = copylen + 2;
-
-                /* Check if buf_head wraps */
-                if (from + copylen > tail) {
-                        const u16 tailsize = tail - from;
-
-                        memcpy(to, from, tailsize);
-                        to      += tailsize;
-                        len     -= tailsize;
-                        copylen -= tailsize;
-                        from    = av->av_buf;
-                }
-
-                memcpy(to, from, copylen);
-                from += copylen;
-                to   += copylen;
-                len  -= copylen;
-        }
+                return -ENOBUFS;
 
+        avr->avr_ack_seqno  = seqno;
+        avr->avr_ack_ptr    = av->av_buf_head;
+        avr->avr_ack_ackno  = av->av_buf_ackno;
+        avr->avr_ack_nonce  = nonce_sum;
+        avr->avr_ack_runlen = dccp_ackvec_runlen(av->av_buf + av->av_buf_head);
         /*
-         *      From RFC 4340, A.2:
-         *
-         *      For each acknowledgement it sends, the HC-Receiver will add an
-         *      acknowledgement record.  ack_seqno will equal the HC-Receiver
-         *      sequence number it used for the ack packet; ack_ptr will equal
-         *      buf_head; ack_ackno will equal buf_ackno; and ack_nonce will
-         *      equal buf_nonce.
+         * When the buffer overflows, we keep no more than one record. This is
+         * the simplest way of disambiguating sender-Acks dating from before the
+         * overflow from sender-Acks which refer to after the overflow; a simple
+         * solution is preferable here since we are handling an exception.
          */
-        avr->avr_ack_seqno = DCCP_SKB_CB(skb)->dccpd_seq;
-        avr->avr_ack_ptr   = av->av_buf_head;
-        avr->avr_ack_ackno = av->av_buf_ackno;
-        avr->avr_ack_nonce = av->av_buf_nonce;
-        avr->avr_sent_len  = av->av_vec_len;
-
-        dccp_ackvec_insert_avr(av, avr);
+        if (av->av_overflow)
+                dccp_ackvec_purge_records(av);
+        /*
+         * Since GSS is incremented for each packet, the list is automatically
+         * arranged in descending order of @ack_seqno.
+         */
+        list_add(&avr->avr_node, &av->av_records);
 
-        dccp_pr_debug("%s ACK Vector 0, len=%d, ack_seqno=%llu, "
-                      "ack_ackno=%llu\n",
-                      dccp_role(sk), avr->avr_sent_len,
+        dccp_pr_debug("Added Vector, ack_seqno=%llu, ack_ackno=%llu (rl=%u)\n",
                       (unsigned long long)avr->avr_ack_seqno,
-                      (unsigned long long)avr->avr_ack_ackno);
+                      (unsigned long long)avr->avr_ack_ackno,
+                      avr->avr_ack_runlen);
         return 0;
 }
 
-struct dccp_ackvec *dccp_ackvec_alloc(const gfp_t priority)
+static struct dccp_ackvec_record *dccp_ackvec_lookup(struct list_head *av_list,
+                                                     const u64 ackno)
 {
-        struct dccp_ackvec *av = kmem_cache_alloc(dccp_ackvec_slab, priority);
-
-        if (av != NULL) {
-                av->av_buf_head  = DCCP_MAX_ACKVEC_LEN - 1;
-                av->av_buf_ackno = UINT48_MAX + 1;
-                av->av_buf_nonce = 0;
-                av->av_time      = ktime_set(0, 0);
-                av->av_vec_len   = 0;
-                INIT_LIST_HEAD(&av->av_records);
+        struct dccp_ackvec_record *avr;
+        /*
+         * Exploit that records are inserted in descending order of sequence
+         * number, start with the oldest record first. If @ackno is `before'
+         * the earliest ack_ackno, the packet is too old to be considered.
+         */
+        list_for_each_entry_reverse(avr, av_list, avr_node) {
+                if (avr->avr_ack_seqno == ackno)
+                        return avr;
+                if (before48(ackno, avr->avr_ack_seqno))
+                        break;
         }
-
-        return av;
+        return NULL;
 }
 
-void dccp_ackvec_free(struct dccp_ackvec *av)
+/*
+ * Buffer index and length computation using modulo-buffersize arithmetic.
+ * Note that, as pointers move from right to left, head is `before' tail.
+ */
+static inline u16 __ackvec_idx_add(const u16 a, const u16 b)
 {
-        if (unlikely(av == NULL))
-                return;
-
-        if (!list_empty(&av->av_records)) {
-                struct dccp_ackvec_record *avr, *next;
-
-                list_for_each_entry_safe(avr, next, &av->av_records, avr_node) {
-                        list_del_init(&avr->avr_node);
-                        dccp_ackvec_record_delete(avr);
-                }
-        }
-
-        kmem_cache_free(dccp_ackvec_slab, av);
+        return (a + b) % DCCPAV_MAX_ACKVEC_LEN;
 }
 
-static inline u8 dccp_ackvec_state(const struct dccp_ackvec *av,
-                                   const u32 index)
+static inline u16 __ackvec_idx_sub(const u16 a, const u16 b)
 {
-        return av->av_buf[index] & DCCP_ACKVEC_STATE_MASK;
+        return __ackvec_idx_add(a, DCCPAV_MAX_ACKVEC_LEN - b);
 }
 
-static inline u8 dccp_ackvec_len(const struct dccp_ackvec *av,
-                                 const u32 index)
+u16 dccp_ackvec_buflen(const struct dccp_ackvec *av)
 {
-        return av->av_buf[index] & DCCP_ACKVEC_LEN_MASK;
+        if (unlikely(av->av_overflow))
+                return DCCPAV_MAX_ACKVEC_LEN;
+        return __ackvec_idx_sub(av->av_buf_tail, av->av_buf_head);
 }
 
-/*
- * If several packets are missing, the HC-Receiver may prefer to enter multiple
- * bytes with run length 0, rather than a single byte with a larger run length;
- * this simplifies table updates if one of the missing packets arrives.
+/**
+ * dccp_ackvec_update_old  -  Update previous state as per RFC 4340, 11.4.1
+ * @av:         non-empty buffer to update
+ * @distance:   negative or zero distance of @seqno from buf_ackno downward
+ * @seqno:      the (old) sequence number whose record is to be updated
+ * @state:      state in which packet carrying @seqno was received
  */
-static inline int dccp_ackvec_set_buf_head_state(struct dccp_ackvec *av,
-                                                 const unsigned int packets,
-                                                 const unsigned char state)
+static void dccp_ackvec_update_old(struct dccp_ackvec *av, s64 distance,
+                                   u64 seqno, enum dccp_ackvec_states state)
 {
-        long gap;
-        long new_head;
+        u16 ptr = av->av_buf_head;
 
-        if (av->av_vec_len + packets > DCCP_MAX_ACKVEC_LEN)
-                return -ENOBUFS;
+        BUG_ON(distance > 0);
+        if (unlikely(dccp_ackvec_is_empty(av)))
+                return;
 
-        gap      = packets - 1;
-        new_head = av->av_buf_head - packets;
+        do {
+                u8 runlen = dccp_ackvec_runlen(av->av_buf + ptr);
 
-        if (new_head < 0) {
-                if (gap > 0) {
-                        memset(av->av_buf, DCCP_ACKVEC_STATE_NOT_RECEIVED,
-                               gap + new_head + 1);
-                        gap = -new_head;
+                if (distance + runlen >= 0) {
+                        /*
+                         * Only update the state if packet has not been received
+                         * yet. This is OK as per the second table in RFC 4340,
+                         * 11.4.1; i.e. here we are using the following table:
+                         *                     RECEIVED
+                         *                      0   1   3
+                         *              S     +---+---+---+
+                         *              T   0 | 0 | 0 | 0 |
+                         *              O     +---+---+---+
+                         *              R   1 | 1 | 1 | 1 |
+                         *              E     +---+---+---+
+                         *              D   3 | 0 | 1 | 3 |
+                         *                    +---+---+---+
+                         * The "Not Received" state was set by reserve_seats().
+                         */
+                        if (av->av_buf[ptr] == DCCPAV_NOT_RECEIVED)
+                                av->av_buf[ptr] = state;
+                        else
+                                dccp_pr_debug("Not changing %llu state to %u\n",
+                                              (unsigned long long)seqno, state);
+                        break;
                 }
-                new_head += DCCP_MAX_ACKVEC_LEN;
-        }
 
-        av->av_buf_head = new_head;
+                distance += runlen + 1;
+                ptr       = __ackvec_idx_add(ptr, 1);
 
-        if (gap > 0)
-                memset(av->av_buf + av->av_buf_head + 1,
-                       DCCP_ACKVEC_STATE_NOT_RECEIVED, gap);
+        } while (ptr != av->av_buf_tail);
+}
 
-        av->av_buf[av->av_buf_head] = state;
-        av->av_vec_len += packets;
-        return 0;
+/* Mark @num entries after buf_head as "Not yet received". */
+static void dccp_ackvec_reserve_seats(struct dccp_ackvec *av, u16 num)
+{
+        u16 start = __ackvec_idx_add(av->av_buf_head, 1),
+            len   = DCCPAV_MAX_ACKVEC_LEN - start;
+
+        /* check for buffer wrap-around */
+        if (num > len) {
+                memset(av->av_buf + start, DCCPAV_NOT_RECEIVED, len);
+                start = 0;
+                num  -= len;
+        }
+        if (num)
+                memset(av->av_buf + start, DCCPAV_NOT_RECEIVED, num);
 }
 
-/*
- * Implements the RFC 4340, Appendix A
+/**
+ * dccp_ackvec_add_new  -  Record one or more new entries in Ack Vector buffer
+ * @av:          container of buffer to update (can be empty or non-empty)
+ * @num_packets: number of packets to register (must be >= 1)
+ * @seqno:       sequence number of the first packet in @num_packets
+ * @state:       state in which packet carrying @seqno was received
  */
-int dccp_ackvec_add(struct dccp_ackvec *av, const struct sock *sk,
-                    const u64 ackno, const u8 state)
+static void dccp_ackvec_add_new(struct dccp_ackvec *av, u32 num_packets,
+                                u64 seqno, enum dccp_ackvec_states state)
 {
-        /*
-         * Check at the right places if the buffer is full, if it is, tell the
-         * caller to start dropping packets till the HC-Sender acks our ACK
-         * vectors, when we will free up space in av_buf.
-         *
-         * We may well decide to do buffer compression, etc, but for now lets
-         * just drop.
-         *
-         * From Appendix A.1.1 (`New Packets'):
-         *
-         *      Of course, the circular buffer may overflow, either when the
-         *      HC-Sender is sending data at a very high rate, when the
-         *      HC-Receiver's acknowledgements are not reaching the HC-Sender,
-         *      or when the HC-Sender is forgetting to acknowledge those acks
-         *      (so the HC-Receiver is unable to clean up old state). In this
-         *      case, the HC-Receiver should either compress the buffer (by
-         *      increasing run lengths when possible), transfer its state to
-         *      a larger buffer, or, as a last resort, drop all received
-         *      packets, without processing them whatsoever, until its buffer
-         *      shrinks again.
-         */
+        u32 num_cells = num_packets;
 
-        /* See if this is the first ackno being inserted */
-        if (av->av_vec_len == 0) {
-                av->av_buf[av->av_buf_head] = state;
-                av->av_vec_len = 1;
-        } else if (after48(ackno, av->av_buf_ackno)) {
-                const u64 delta = dccp_delta_seqno(av->av_buf_ackno, ackno);
+        if (num_packets > DCCPAV_BURST_THRESH) {
+                u32 lost_packets = num_packets - 1;
 
+                DCCP_WARN("Warning: large burst loss (%u)\n", lost_packets);
                 /*
-                 * Look if the state of this packet is the same as the
-                 * previous ackno and if so if we can bump the head len.
+                 * We received 1 packet and have a loss of size "num_packets-1"
+                 * which we squeeze into num_cells-1 rather than reserving an
+                 * entire byte for each lost packet.
+                 * The reason is that the vector grows in O(burst_length); when
+                 * it grows too large there will no room left for the payload.
+                 * This is a trade-off: if a few packets out of the burst show
+                 * up later, their state will not be changed; it is simply too
+                 * costly to reshuffle/reallocate/copy the buffer each time.
+                 * Should such problems persist, we will need to switch to a
+                 * different underlying data structure.
                  */
-                if (delta == 1 &&
-                    dccp_ackvec_state(av, av->av_buf_head) == state &&
-                    dccp_ackvec_len(av, av->av_buf_head) < DCCP_ACKVEC_LEN_MASK)
-                        av->av_buf[av->av_buf_head]++;
-                else if (dccp_ackvec_set_buf_head_state(av, delta, state))
-                        return -ENOBUFS;
-        } else {
-                /*
-                 * A.1.2.  Old Packets
-                 *
-                 *      When a packet with Sequence Number S <= buf_ackno
-                 *      arrives, the HC-Receiver will scan the table for
-                 *      the byte corresponding to S. (Indexing structures
-                 *      could reduce the complexity of this scan.)
-                 */
-                u64 delta = dccp_delta_seqno(ackno, av->av_buf_ackno);
-                u32 index = av->av_buf_head;
+                for (num_packets = num_cells = 1; lost_packets; ++num_cells) {
+                        u8 len = min(lost_packets, (u32)DCCPAV_MAX_RUNLEN);
 
-                while (1) {
-                        const u8 len = dccp_ackvec_len(av, index);
-                        const u8 av_state = dccp_ackvec_state(av, index);
-                        /*
-                         * valid packets not yet in av_buf have a reserved
-                         * entry, with a len equal to 0.
-                         */
-                        if (av_state == DCCP_ACKVEC_STATE_NOT_RECEIVED &&
-                            len == 0 && delta == 0) { /* Found our
-                                                         reserved seat! */
-                                dccp_pr_debug("Found %llu reserved seat!\n",
-                                              (unsigned long long)ackno);
-                                av->av_buf[index] = state;
-                                goto out;
-                        }
-                        /* len == 0 means one packet */
-                        if (delta < len + 1)
-                                goto out_duplicate;
-
-                        delta -= len + 1;
-                        if (++index == DCCP_MAX_ACKVEC_LEN)
-                                index = 0;
+                        av->av_buf_head = __ackvec_idx_sub(av->av_buf_head, 1);
+                        av->av_buf[av->av_buf_head] = DCCPAV_NOT_RECEIVED | len;
+
+                        lost_packets -= len;
                 }
         }
 
-        av->av_buf_ackno = ackno;
-        av->av_time = ktime_get_real();
-out:
-        return 0;
+        if (num_cells + dccp_ackvec_buflen(av) >= DCCPAV_MAX_ACKVEC_LEN) {
+                DCCP_CRIT("Ack Vector buffer overflow: dropping old entries\n");
+                av->av_overflow = true;
+        }
+
+        av->av_buf_head = __ackvec_idx_sub(av->av_buf_head, num_packets);
+        if (av->av_overflow)
+                av->av_buf_tail = av->av_buf_head;
 
-out_duplicate:
-        /* Duplicate packet */
-        dccp_pr_debug("Received a dup or already considered lost "
-                      "packet: %llu\n", (unsigned long long)ackno);
-        return -EILSEQ;
+        av->av_buf[av->av_buf_head] = state;
+        av->av_buf_ackno            = seqno;
+
+        if (num_packets > 1)
+                dccp_ackvec_reserve_seats(av, num_packets - 1);
 }
 
-static void dccp_ackvec_throw_record(struct dccp_ackvec *av,
-                                     struct dccp_ackvec_record *avr)
+/**
+ * dccp_ackvec_input  -  Register incoming packet in the buffer
+ */
+void dccp_ackvec_input(struct dccp_ackvec *av, struct sk_buff *skb)
 {
-        struct dccp_ackvec_record *next;
+        u64 seqno = DCCP_SKB_CB(skb)->dccpd_seq;
+        enum dccp_ackvec_states state = DCCPAV_RECEIVED;
 
-        /* sort out vector length */
-        if (av->av_buf_head <= avr->avr_ack_ptr)
-                av->av_vec_len = avr->avr_ack_ptr - av->av_buf_head;
-        else
-                av->av_vec_len = DCCP_MAX_ACKVEC_LEN - 1 -
-                                 av->av_buf_head + avr->avr_ack_ptr;
+        if (dccp_ackvec_is_empty(av)) {
+                dccp_ackvec_add_new(av, 1, seqno, state);
+                av->av_tail_ackno = seqno;
 
-        /* free records */
-        list_for_each_entry_safe_from(avr, next, &av->av_records, avr_node) {
-                list_del_init(&avr->avr_node);
-                dccp_ackvec_record_delete(avr);
-        }
-}
+        } else {
+                s64 num_packets = dccp_delta_seqno(av->av_buf_ackno, seqno);
+                u8 *current_head = av->av_buf + av->av_buf_head;
 
-void dccp_ackvec_check_rcv_ackno(struct dccp_ackvec *av, struct sock *sk,
-                                 const u64 ackno)
-{
-        struct dccp_ackvec_record *avr;
+                if (num_packets == 1 &&
+                    dccp_ackvec_state(current_head) == state &&
+                    dccp_ackvec_runlen(current_head) < DCCPAV_MAX_RUNLEN) {
 
-        /*
-         * If we traverse backwards, it should be faster when we have large
-         * windows. We will be receiving ACKs for stuff we sent a while back
-         * -sorbo.
-         */
-        list_for_each_entry_reverse(avr, &av->av_records, avr_node) {
-                if (ackno == avr->avr_ack_seqno) {
-                        dccp_pr_debug("%s ACK packet 0, len=%d, ack_seqno=%llu, "
-                                      "ack_ackno=%llu, ACKED!\n",
-                                      dccp_role(sk), 1,
-                                      (unsigned long long)avr->avr_ack_seqno,
-                                      (unsigned long long)avr->avr_ack_ackno);
-                        dccp_ackvec_throw_record(av, avr);
-                        break;
-                } else if (avr->avr_ack_seqno > ackno)
-                        break; /* old news */
+                        *current_head   += 1;
+                        av->av_buf_ackno = seqno;
+
+                } else if (num_packets > 0) {
+                        dccp_ackvec_add_new(av, num_packets, seqno, state);
+                } else {
+                        dccp_ackvec_update_old(av, num_packets, seqno, state);
+                }
         }
 }
 
-static void dccp_ackvec_check_rcv_ackvector(struct dccp_ackvec *av,
-                                            struct sock *sk, u64 *ackno,
-                                            const unsigned char len,
-                                            const unsigned char *vector)
+/**
+ * dccp_ackvec_clear_state  -  Perform house-keeping / garbage-collection
+ * This routine is called when the peer acknowledges the receipt of Ack Vectors
+ * up to and including @ackno. While based on on section A.3 of RFC 4340, here
+ * are additional precautions to prevent corrupted buffer state. In particular,
+ * we use tail_ackno to identify outdated records; it always marks the earliest
+ * packet of group (2) in 11.4.2.
+ */
+void dccp_ackvec_clear_state(struct dccp_ackvec *av, const u64 ackno)
 {
-        unsigned char i;
-        struct dccp_ackvec_record *avr;
+        struct dccp_ackvec_record *avr, *next;
+        u8 runlen_now, eff_runlen;
+        s64 delta;
 
-        /* Check if we actually sent an ACK vector */
-        if (list_empty(&av->av_records))
+        avr = dccp_ackvec_lookup(&av->av_records, ackno);
+        if (avr == NULL)
                 return;
+        /*
+         * Deal with outdated acknowledgments: this arises when e.g. there are
+         * several old records and the acks from the peer come in slowly. In
+         * that case we may still have records that pre-date tail_ackno.
+         */
+        delta = dccp_delta_seqno(av->av_tail_ackno, avr->avr_ack_ackno);
+        if (delta < 0)
+                goto free_records;
+        /*
+         * Deal with overlapping Ack Vectors: don't subtract more than the
+         * number of packets between tail_ackno and ack_ackno.
+         */
+        eff_runlen = delta < avr->avr_ack_runlen ? delta : avr->avr_ack_runlen;
 
-        i = len;
+        runlen_now = dccp_ackvec_runlen(av->av_buf + avr->avr_ack_ptr);
         /*
-         * XXX
-         * I think it might be more efficient to work backwards. See comment on
-         * rcv_ackno. -sorbo.
+         * The run length of Ack Vector cells does not decrease over time. If
+         * the run length is the same as at the time the Ack Vector was sent, we
+         * free the ack_ptr cell. That cell can however not be freed if the run
+         * length has increased: in this case we need to move the tail pointer
+         * backwards (towards higher indices), to its next-oldest neighbour.
          */
-        avr = list_entry(av->av_records.next, struct dccp_ackvec_record, avr_node);
-        while (i--) {
-                const u8 rl = *vector & DCCP_ACKVEC_LEN_MASK;
-                u64 ackno_end_rl;
+        if (runlen_now > eff_runlen) {
 
-                dccp_set_seqno(&ackno_end_rl, *ackno - rl);
+                av->av_buf[avr->avr_ack_ptr] -= eff_runlen + 1;
+                av->av_buf_tail = __ackvec_idx_add(avr->avr_ack_ptr, 1);
 
+                /* This move may not have cleared the overflow flag. */
+                if (av->av_overflow)
+                        av->av_overflow = (av->av_buf_head == av->av_buf_tail);
+        } else {
+                av->av_buf_tail = avr->avr_ack_ptr;
                 /*
-                 * If our AVR sequence number is greater than the ack, go
-                 * forward in the AVR list until it is not so.
+                 * We have made sure that avr points to a valid cell within the
+                 * buffer. This cell is either older than head, or equals head
+                 * (empty buffer): in both cases we no longer have any overflow.
                  */
-                list_for_each_entry_from(avr, &av->av_records, avr_node) {
-                        if (!after48(avr->avr_ack_seqno, *ackno))
-                                goto found;
-                }
-                /* End of the av_records list, not found, exit */
-                break;
-found:
-                if (between48(avr->avr_ack_seqno, ackno_end_rl, *ackno)) {
-                        const u8 state = *vector & DCCP_ACKVEC_STATE_MASK;
-                        if (state != DCCP_ACKVEC_STATE_NOT_RECEIVED) {
-                                dccp_pr_debug("%s ACK vector 0, len=%d, "
-                                              "ack_seqno=%llu, ack_ackno=%llu, "
-                                              "ACKED!\n",
-                                              dccp_role(sk), len,
-                                              (unsigned long long)
-                                              avr->avr_ack_seqno,
-                                              (unsigned long long)
-                                              avr->avr_ack_ackno);
-                                dccp_ackvec_throw_record(av, avr);
-                                break;
-                        }
-                        /*
-                         * If it wasn't received, continue scanning... we might
-                         * find another one.
-                         */
-                }
+                av->av_overflow = 0;
+        }
 
-                dccp_set_seqno(ackno, ackno_end_rl - 1);
-                ++vector;
+        /*
+         * The peer has acknowledged up to and including ack_ackno. Hence the
+         * first packet in group (2) of 11.4.2 is the successor of ack_ackno.
+         */
+        av->av_tail_ackno = ADD48(avr->avr_ack_ackno, 1);
+
+free_records:
+        list_for_each_entry_safe_from(avr, next, &av->av_records, avr_node) {
+                list_del(&avr->avr_node);
+                kmem_cache_free(dccp_ackvec_record_slab, avr);
         }
 }
 
-int dccp_ackvec_parse(struct sock *sk, const struct sk_buff *skb,
-                      u64 *ackno, const u8 opt, const u8 *value, const u8 len)
+/*
+ *      Routines to keep track of Ack Vectors received in an skb
+ */
+int dccp_ackvec_parsed_add(struct list_head *head, u8 *vec, u8 len, u8 nonce)
 {
-        if (len > DCCP_SINGLE_OPT_MAXLEN)
-                return -1;
+        struct dccp_ackvec_parsed *new = kmalloc(sizeof(*new), GFP_ATOMIC);
+
+        if (new == NULL)
+                return -ENOBUFS;
+        new->vec   = vec;
+        new->len   = len;
+        new->nonce = nonce;
 
-        /* dccp_ackvector_print(DCCP_SKB_CB(skb)->dccpd_ack_seq, value, len); */
-        dccp_ackvec_check_rcv_ackvector(dccp_sk(sk)->dccps_hc_rx_ackvec, sk,
-                                        ackno, len, value);
+        list_add_tail(&new->node, head);
         return 0;
 }
+EXPORT_SYMBOL_GPL(dccp_ackvec_parsed_add);
+
+void dccp_ackvec_parsed_cleanup(struct list_head *parsed_chunks)
+{
+        struct dccp_ackvec_parsed *cur, *next;
+
+        list_for_each_entry_safe(cur, next, parsed_chunks, node)
+                kfree(cur);
+        INIT_LIST_HEAD(parsed_chunks);
+}
+EXPORT_SYMBOL_GPL(dccp_ackvec_parsed_cleanup);
 
 int __init dccp_ackvec_init(void)
 {
@@ -448,10 +379,9 @@ int __init dccp_ackvec_init(void)
         if (dccp_ackvec_slab == NULL)
                 goto out_err;
 
-        dccp_ackvec_record_slab =
-                        kmem_cache_create("dccp_ackvec_record",
-                                          sizeof(struct dccp_ackvec_record),
-                                          0, SLAB_HWCACHE_ALIGN, NULL);
+        dccp_ackvec_record_slab = kmem_cache_create("dccp_ackvec_record",
+                                             sizeof(struct dccp_ackvec_record),
+                                             0, SLAB_HWCACHE_ALIGN, NULL);
         if (dccp_ackvec_record_slab == NULL)
                 goto out_destroy_slab;
 
diff --git a/net/dccp/ackvec.h b/net/dccp/ackvec.h
index 7ea557b7c6b1..e2ab0627a5ff 100644
--- a/net/dccp/ackvec.h
+++ b/net/dccp/ackvec.h
@@ -3,9 +3,9 @@
 /*
  *  net/dccp/ackvec.h
  *
- *  An implementation of the DCCP protocol
+ *  An implementation of Ack Vectors for the DCCP protocol
+ *  Copyright (c) 2007 University of Aberdeen, Scotland, UK
  *  Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@mandriva.com>
- *
  *      This program is free software; you can redistribute it and/or modify it
  *      under the terms of the GNU General Public License version 2 as
  *      published by the Free Software Foundation.
@@ -13,99 +13,124 @@
 
 #include <linux/dccp.h>
 #include <linux/compiler.h>
-#include <linux/ktime.h>
 #include <linux/list.h>
 #include <linux/types.h>
 
-/* We can spread an ack vector across multiple options */
-#define DCCP_MAX_ACKVEC_LEN (DCCP_SINGLE_OPT_MAXLEN * 2)
+/*
+ * Ack Vector buffer space is static, in multiples of %DCCP_SINGLE_OPT_MAXLEN,
+ * the maximum size of a single Ack Vector. Setting %DCCPAV_NUM_ACKVECS to 1
+ * will be sufficient for most cases of low Ack Ratios, using a value of 2 gives
+ * more headroom if Ack Ratio is higher or when the sender acknowledges slowly.
+ * The maximum value is bounded by the u16 types for indices and functions.
+ */
+#define DCCPAV_NUM_ACKVECS      2
+#define DCCPAV_MAX_ACKVEC_LEN   (DCCP_SINGLE_OPT_MAXLEN * DCCPAV_NUM_ACKVECS)
 
 /* Estimated minimum average Ack Vector length - used for updating MPS */
 #define DCCPAV_MIN_OPTLEN       16
 
-#define DCCP_ACKVEC_STATE_RECEIVED      0
-#define DCCP_ACKVEC_STATE_ECN_MARKED    (1 << 6)
-#define DCCP_ACKVEC_STATE_NOT_RECEIVED  (3 << 6)
+/* Threshold for coping with large bursts of losses */
+#define DCCPAV_BURST_THRESH     (DCCPAV_MAX_ACKVEC_LEN / 8)
 
-#define DCCP_ACKVEC_STATE_MASK          0xC0 /* 11000000 */
-#define DCCP_ACKVEC_LEN_MASK            0x3F /* 00111111 */
+enum dccp_ackvec_states {
+        DCCPAV_RECEIVED =       0x00,
+        DCCPAV_ECN_MARKED =     0x40,
+        DCCPAV_RESERVED =       0x80,
+        DCCPAV_NOT_RECEIVED =   0xC0
+};
+#define DCCPAV_MAX_RUNLEN       0x3F
 
-/** struct dccp_ackvec - ack vector
- *
- * This data structure is the one defined in RFC 4340, Appendix A.
- *
- * @av_buf_head - circular buffer head
- * @av_buf_tail - circular buffer tail
- * @av_buf_ackno - ack # of the most recent packet acknowledgeable in the
- *                     buffer (i.e. %av_buf_head)
- * @av_buf_nonce - the one-bit sum of the ECN Nonces on all packets acked
- *                     by the buffer with State 0
- *
- * Additionally, the HC-Receiver must keep some information about the
- * Ack Vectors it has recently sent. For each packet sent carrying an
- * Ack Vector, it remembers four variables:
+static inline u8 dccp_ackvec_runlen(const u8 *cell)
+{
+        return *cell & DCCPAV_MAX_RUNLEN;
+}
+
+static inline u8 dccp_ackvec_state(const u8 *cell)
+{
+        return *cell & ~DCCPAV_MAX_RUNLEN;
+}
+
+/** struct dccp_ackvec - Ack Vector main data structure
  *
- * @av_records - list of dccp_ackvec_record
- * @av_ack_nonce - the one-bit sum of the ECN Nonces for all State 0.
+ * This implements a fixed-size circular buffer within an array and is largely
+ * based on Appendix A of RFC 4340.
  *
- * @av_time - the time in usecs
- * @av_buf - circular buffer of acknowledgeable packets
+ * @av_buf:        circular buffer storage area
+ * @av_buf_head:   head index; begin of live portion in @av_buf
+ * @av_buf_tail:   tail index; first index _after_ the live portion in @av_buf
+ * @av_buf_ackno:  highest seqno of acknowledgeable packet recorded in @av_buf
+ * @av_tail_ackno: lowest  seqno of acknowledgeable packet recorded in @av_buf
+ * @av_buf_nonce:  ECN nonce sums, each covering subsequent segments of up to
+ *                 %DCCP_SINGLE_OPT_MAXLEN cells in the live portion of @av_buf
+ * @av_overflow:   if 1 then buf_head == buf_tail indicates buffer wraparound
+ * @av_records:    list of %dccp_ackvec_record (Ack Vectors sent previously)
  */
 struct dccp_ackvec {
-        u64                     av_buf_ackno;
-        struct list_head        av_records;
-        ktime_t                 av_time;
+        u8                      av_buf[DCCPAV_MAX_ACKVEC_LEN];
         u16                     av_buf_head;
-        u16                     av_vec_len;
-        u8                      av_buf_nonce;
-        u8                      av_ack_nonce;
-        u8                      av_buf[DCCP_MAX_ACKVEC_LEN];
+        u16                     av_buf_tail;
+        u64                     av_buf_ackno:48;
+        u64                     av_tail_ackno:48;
+        bool                    av_buf_nonce[DCCPAV_NUM_ACKVECS];
+        u8                      av_overflow:1;
+        struct list_head        av_records;
 };
 
-/** struct dccp_ackvec_record - ack vector record
+/** struct dccp_ackvec_record - Records information about sent Ack Vectors
  *
- * ACK vector record as defined in Appendix A of spec.
+ * These list entries define the additional information which the HC-Receiver
+ * keeps about recently-sent Ack Vectors; again refer to RFC 4340, Appendix A.
  *
- * The list is sorted by avr_ack_seqno
+ * @avr_node:       the list node in @av_records
+ * @avr_ack_seqno:  sequence number of the packet the Ack Vector was sent on
+ * @avr_ack_ackno:  the Ack number that this record/Ack Vector refers to
+ * @avr_ack_ptr:    pointer into @av_buf where this record starts
+ * @avr_ack_runlen: run length of @avr_ack_ptr at the time of sending
+ * @avr_ack_nonce:  the sum of @av_buf_nonce's at the time this record was sent
  *
- * @avr_node - node in av_records
- * @avr_ack_seqno - sequence number of the packet this record was sent on
- * @avr_ack_ackno - sequence number being acknowledged
- * @avr_ack_ptr - pointer into av_buf where this record starts
- * @avr_ack_nonce - av_ack_nonce at the time this record was sent
- * @avr_sent_len - lenght of the record in av_buf
+ * The list as a whole is sorted in descending order by @avr_ack_seqno.
  */
 struct dccp_ackvec_record {
         struct list_head avr_node;
-        u64              avr_ack_seqno;
-        u64              avr_ack_ackno;
+        u64              avr_ack_seqno:48;
+        u64              avr_ack_ackno:48;
         u16              avr_ack_ptr;
-        u16              avr_sent_len;
-        u8               avr_ack_nonce;
+        u8               avr_ack_runlen;
+        u8               avr_ack_nonce:1;
 };
 
-struct sock;
-struct sk_buff;
-
 extern int dccp_ackvec_init(void);
 extern void dccp_ackvec_exit(void);
 
 extern struct dccp_ackvec *dccp_ackvec_alloc(const gfp_t priority);
 extern void dccp_ackvec_free(struct dccp_ackvec *av);
 
-extern int dccp_ackvec_add(struct dccp_ackvec *av, const struct sock *sk,
-                           const u64 ackno, const u8 state);
-
-extern void dccp_ackvec_check_rcv_ackno(struct dccp_ackvec *av,
-                                        struct sock *sk, const u64 ackno);
-extern int dccp_ackvec_parse(struct sock *sk, const struct sk_buff *skb,
-                             u64 *ackno, const u8 opt,
-                             const u8 *value, const u8 len);
+extern void dccp_ackvec_input(struct dccp_ackvec *av, struct sk_buff *skb);
+extern int  dccp_ackvec_update_records(struct dccp_ackvec *av, u64 seq, u8 sum);
+extern void dccp_ackvec_clear_state(struct dccp_ackvec *av, const u64 ackno);
+extern u16  dccp_ackvec_buflen(const struct dccp_ackvec *av);
 
-extern int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb);
-
-static inline int dccp_ackvec_pending(const struct dccp_ackvec *av)
+static inline bool dccp_ackvec_is_empty(const struct dccp_ackvec *av)
 {
-        return av->av_vec_len;
+        return av->av_overflow == 0 && av->av_buf_head == av->av_buf_tail;
 }
+
+/**
+ * struct dccp_ackvec_parsed  -  Record offsets of Ack Vectors in skb
+ * @vec:        start of vector (offset into skb)
+ * @len:        length of @vec
+ * @nonce:      whether @vec had an ECN nonce of 0 or 1
+ * @node:       FIFO - arranged in descending order of ack_ackno
+ * This structure is used by CCIDs to access Ack Vectors in a received skb.
+ */
+struct dccp_ackvec_parsed {
+        u8               *vec,
+                         len,
+                         nonce:1;
+        struct list_head node;
+};
+
+extern int dccp_ackvec_parsed_add(struct list_head *head,
+                                  u8 *vec, u8 len, u8 nonce);
+extern void dccp_ackvec_parsed_cleanup(struct list_head *parsed_chunks);
 #endif /* _ACKVEC_H */
diff --git a/net/dccp/ccids/ccid2.c b/net/dccp/ccids/ccid2.c
index 6576eae9e779..e96d5e810039 100644
--- a/net/dccp/ccids/ccid2.c
+++ b/net/dccp/ccids/ccid2.c
@@ -246,68 +246,6 @@ static void ccid2_hc_tx_packet_sent(struct sock *sk, unsigned int len)
 #endif
 }
 
-/* XXX Lame code duplication!
- * returns -1 if none was found.
- * else returns the next offset to use in the function call.
- */
-static int ccid2_ackvector(struct sock *sk, struct sk_buff *skb, int offset,
-                           unsigned char **vec, unsigned char *veclen)
-{
-        const struct dccp_hdr *dh = dccp_hdr(skb);
-        unsigned char *options = (unsigned char *)dh + dccp_hdr_len(skb);
-        unsigned char *opt_ptr;
-        const unsigned char *opt_end = (unsigned char *)dh +
-                                        (dh->dccph_doff * 4);
-        unsigned char opt, len;
-        unsigned char *value;
-
-        BUG_ON(offset < 0);
-        options += offset;
-        opt_ptr = options;
-        if (opt_ptr >= opt_end)
-                return -1;
-
-        while (opt_ptr != opt_end) {
-                opt   = *opt_ptr++;
-                len   = 0;
-                value = NULL;
-
-                /* Check if this isn't a single byte option */
-                if (opt > DCCPO_MAX_RESERVED) {
-                        if (opt_ptr == opt_end)
-                                goto out_invalid_option;
-
-                        len = *opt_ptr++;
-                        if (len < 3)
-                                goto out_invalid_option;
-                        /*
-                         * Remove the type and len fields, leaving
-                         * just the value size
-                         */
-                        len     -= 2;
-                        value   = opt_ptr;
-                        opt_ptr += len;
-
-                        if (opt_ptr > opt_end)
-                                goto out_invalid_option;
-                }
-
-                switch (opt) {
-                case DCCPO_ACK_VECTOR_0:
-                case DCCPO_ACK_VECTOR_1:
-                        *vec    = value;
-                        *veclen = len;
-                        return offset + (opt_ptr - options);
-                }
-        }
-
-        return -1;
-
-out_invalid_option:
-        DCCP_BUG("Invalid option - this should not happen (previous parsing)!");
-        return -1;
-}
-
 /**
  * ccid2_rtt_estimator - Sample RTT and compute RTO using RFC2988 algorithm
  * This code is almost identical with TCP's tcp_rtt_estimator(), since
@@ -432,16 +370,28 @@ static void ccid2_congestion_event(struct sock *sk, struct ccid2_seq *seqp)
                 ccid2_change_l_ack_ratio(sk, hc->tx_cwnd);
 }
 
+static int ccid2_hc_tx_parse_options(struct sock *sk, u8 packet_type,
+                                     u8 option, u8 *optval, u8 optlen)
+{
+        struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
+
+        switch (option) {
+        case DCCPO_ACK_VECTOR_0:
+        case DCCPO_ACK_VECTOR_1:
+                return dccp_ackvec_parsed_add(&hc->tx_av_chunks, optval, optlen,
+                                              option - DCCPO_ACK_VECTOR_0);
+        }
+        return 0;
+}
+
 static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
 {
         struct dccp_sock *dp = dccp_sk(sk);
         struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
         const bool sender_was_blocked = ccid2_cwnd_network_limited(hc);
+        struct dccp_ackvec_parsed *avp;
         u64 ackno, seqno;
         struct ccid2_seq *seqp;
-        unsigned char *vector;
-        unsigned char veclen;
-        int offset = 0;
         int done = 0;
         unsigned int maxincr = 0;
 
@@ -475,17 +425,12 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
         }
 
         /* check forward path congestion */
-        /* still didn't send out new data packets */
-        if (hc->tx_seqh == hc->tx_seqt)
+        if (dccp_packet_without_ack(skb))
                 return;
 
-        switch (DCCP_SKB_CB(skb)->dccpd_type) {
-        case DCCP_PKT_ACK:
-        case DCCP_PKT_DATAACK:
-                break;
-        default:
-                return;
-        }
+        /* still didn't send out new data packets */
+        if (hc->tx_seqh == hc->tx_seqt)
+                goto done;
 
         ackno = DCCP_SKB_CB(skb)->dccpd_ack_seq;
         if (after48(ackno, hc->tx_high_ack))
@@ -509,16 +454,16 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
                 maxincr = DIV_ROUND_UP(dp->dccps_l_ack_ratio, 2);
 
         /* go through all ack vectors */
-        while ((offset = ccid2_ackvector(sk, skb, offset,
-                                         &vector, &veclen)) != -1) {
+        list_for_each_entry(avp, &hc->tx_av_chunks, node) {
                 /* go through this ack vector */
-                while (veclen--) {
-                        const u8 rl = *vector & DCCP_ACKVEC_LEN_MASK;
-                        u64 ackno_end_rl = SUB48(ackno, rl);
+                for (; avp->len--; avp->vec++) {
+                        u64 ackno_end_rl = SUB48(ackno,
+                                                 dccp_ackvec_runlen(avp->vec));
 
-                        ccid2_pr_debug("ackvec start:%llu end:%llu\n",
+                        ccid2_pr_debug("ackvec %llu |%u,%u|\n",
                                        (unsigned long long)ackno,
-                                       (unsigned long long)ackno_end_rl);
+                                       dccp_ackvec_state(avp->vec) >> 6,
+                                       dccp_ackvec_runlen(avp->vec));
                         /* if the seqno we are analyzing is larger than the
                          * current ackno, then move towards the tail of our
                          * seqnos.
@@ -537,17 +482,15 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
                          * run length
                          */
                         while (between48(seqp->ccid2s_seq,ackno_end_rl,ackno)) {
-                                const u8 state = *vector &
-                                                 DCCP_ACKVEC_STATE_MASK;
+                                const u8 state = dccp_ackvec_state(avp->vec);
 
                                 /* new packet received or marked */
-                                if (state != DCCP_ACKVEC_STATE_NOT_RECEIVED &&
+                                if (state != DCCPAV_NOT_RECEIVED &&
                                     !seqp->ccid2s_acked) {
-                                        if (state ==
-                                            DCCP_ACKVEC_STATE_ECN_MARKED) {
+                                        if (state == DCCPAV_ECN_MARKED)
                                                 ccid2_congestion_event(sk,
                                                                        seqp);
-                                        } else
+                                        else
                                                 ccid2_new_ack(sk, seqp,
                                                               &maxincr);
 
@@ -566,7 +509,6 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
                                 break;
 
                         ackno = SUB48(ackno_end_rl, 1);
-                        vector++;
                 }
                 if (done)
                         break;
@@ -634,10 +576,11 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
                 sk_stop_timer(sk, &hc->tx_rtotimer);
         else
                 sk_reset_timer(sk, &hc->tx_rtotimer, jiffies + hc->tx_rto);
-
+done:
         /* check if incoming Acks allow pending packets to be sent */
         if (sender_was_blocked && !ccid2_cwnd_network_limited(hc))
                 tasklet_schedule(&dccp_sk(sk)->dccps_xmitlet);
+        dccp_ackvec_parsed_cleanup(&hc->tx_av_chunks);
 }
 
 static int ccid2_hc_tx_init(struct ccid *ccid, struct sock *sk)
@@ -666,6 +609,7 @@ static int ccid2_hc_tx_init(struct ccid *ccid, struct sock *sk)
         hc->tx_last_cong = ccid2_time_stamp;
         setup_timer(&hc->tx_rtotimer, ccid2_hc_tx_rto_expire,
                         (unsigned long)sk);
+        INIT_LIST_HEAD(&hc->tx_av_chunks);
         return 0;
 }
 
@@ -699,16 +643,17 @@ static void ccid2_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
 }
 
 struct ccid_operations ccid2_ops = {
-        .ccid_id                = DCCPC_CCID2,
-        .ccid_name              = "TCP-like",
-        .ccid_hc_tx_obj_size    = sizeof(struct ccid2_hc_tx_sock),
-        .ccid_hc_tx_init        = ccid2_hc_tx_init,
-        .ccid_hc_tx_exit        = ccid2_hc_tx_exit,
-        .ccid_hc_tx_send_packet = ccid2_hc_tx_send_packet,
-        .ccid_hc_tx_packet_sent = ccid2_hc_tx_packet_sent,
-        .ccid_hc_tx_packet_recv = ccid2_hc_tx_packet_recv,
-        .ccid_hc_rx_obj_size    = sizeof(struct ccid2_hc_rx_sock),
-        .ccid_hc_rx_packet_recv = ccid2_hc_rx_packet_recv,
+        .ccid_id                  = DCCPC_CCID2,
+        .ccid_name                = "TCP-like",
+        .ccid_hc_tx_obj_size      = sizeof(struct ccid2_hc_tx_sock),
+        .ccid_hc_tx_init          = ccid2_hc_tx_init,
+        .ccid_hc_tx_exit          = ccid2_hc_tx_exit,
+        .ccid_hc_tx_send_packet   = ccid2_hc_tx_send_packet,
+        .ccid_hc_tx_packet_sent   = ccid2_hc_tx_packet_sent,
+        .ccid_hc_tx_parse_options = ccid2_hc_tx_parse_options,
+        .ccid_hc_tx_packet_recv   = ccid2_hc_tx_packet_recv,
+        .ccid_hc_rx_obj_size      = sizeof(struct ccid2_hc_rx_sock),
+        .ccid_hc_rx_packet_recv   = ccid2_hc_rx_packet_recv,
 };
 
 #ifdef CONFIG_IP_DCCP_CCID2_DEBUG
diff --git a/net/dccp/ccids/ccid2.h b/net/dccp/ccids/ccid2.h
index 25cb6b216eda..e9985dafc2c7 100644
--- a/net/dccp/ccids/ccid2.h
+++ b/net/dccp/ccids/ccid2.h
@@ -55,6 +55,7 @@ struct ccid2_seq {
  * @tx_rtt_seq:              to decay RTTVAR at most once per flight
  * @tx_rpseq:                last consecutive seqno
  * @tx_rpdupack:             dupacks since rpseq
+ * @tx_av_chunks:            list of Ack Vectors received on current skb
  */
 struct ccid2_hc_tx_sock {
         u32                     tx_cwnd;
@@ -79,6 +80,7 @@ struct ccid2_hc_tx_sock {
         int                     tx_rpdupack;
         u32                     tx_last_cong;
         u64                     tx_high_ack;
+        struct list_head        tx_av_chunks;
 };
 
 static inline bool ccid2_cwnd_network_limited(struct ccid2_hc_tx_sock *hc)
diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index a8ed459508b2..45087052d894 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -93,9 +93,6 @@ extern void dccp_time_wait(struct sock *sk, int state, int timeo);
 #define DCCP_FALLBACK_RTT       (USEC_PER_SEC / 5)
 #define DCCP_SANE_RTT_MAX       (3 * USEC_PER_SEC)
 
-/* Maximal interval between probes for local resources.  */
-#define DCCP_RESOURCE_PROBE_INTERVAL ((unsigned)(HZ / 2U))
-
 /* sysctl variables for DCCP */
 extern int  sysctl_dccp_request_retries;
 extern int  sysctl_dccp_retries1;
@@ -203,12 +200,7 @@ struct dccp_mib {
 DECLARE_SNMP_STAT(struct dccp_mib, dccp_statistics);
 #define DCCP_INC_STATS(field)       SNMP_INC_STATS(dccp_statistics, field)
 #define DCCP_INC_STATS_BH(field)    SNMP_INC_STATS_BH(dccp_statistics, field)
-#define DCCP_INC_STATS_USER(field)  SNMP_INC_STATS_USER(dccp_statistics, field)
 #define DCCP_DEC_STATS(field)       SNMP_DEC_STATS(dccp_statistics, field)
-#define DCCP_ADD_STATS_BH(field, val) \
-                        SNMP_ADD_STATS_BH(dccp_statistics, field, val)
-#define DCCP_ADD_STATS_USER(field, val) \
-                        SNMP_ADD_STATS_USER(dccp_statistics, field, val)
 
 /*
  *      Checksumming routines
@@ -243,6 +235,19 @@ extern void dccp_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
 extern void dccp_send_sync(struct sock *sk, const u64 seq,
                            const enum dccp_pkt_type pkt_type);
 
+/*
+ * TX Packet Dequeueing Interface
+ */
+extern void             dccp_qpolicy_push(struct sock *sk, struct sk_buff *skb);
+extern bool             dccp_qpolicy_full(struct sock *sk);
+extern void             dccp_qpolicy_drop(struct sock *sk, struct sk_buff *skb);
+extern struct sk_buff   *dccp_qpolicy_top(struct sock *sk);
+extern struct sk_buff   *dccp_qpolicy_pop(struct sock *sk);
+extern bool             dccp_qpolicy_param_ok(struct sock *sk, __be32 param);
+
+/*
+ * TX Packet Output and TX Timers
+ */
 extern void   dccp_write_xmit(struct sock *sk);
 extern void   dccp_write_space(struct sock *sk);
 extern void   dccp_flush_write_queue(struct sock *sk, long *time_budget);
@@ -457,12 +462,15 @@ static inline void dccp_update_gss(struct sock *sk, u64 seq)
         dp->dccps_awh = dp->dccps_gss;
 }
 
+static inline int dccp_ackvec_pending(const struct sock *sk)
+{
+        return dccp_sk(sk)->dccps_hc_rx_ackvec != NULL &&
+               !dccp_ackvec_is_empty(dccp_sk(sk)->dccps_hc_rx_ackvec);
+}
+
 static inline int dccp_ack_pending(const struct sock *sk)
 {
-        const struct dccp_sock *dp = dccp_sk(sk);
-        return (dp->dccps_hc_rx_ackvec != NULL &&
-                dccp_ackvec_pending(dp->dccps_hc_rx_ackvec)) ||
-               inet_csk_ack_scheduled(sk);
+        return dccp_ackvec_pending(sk) || inet_csk_ack_scheduled(sk);
 }
 
 extern int  dccp_feat_finalise_settings(struct dccp_sock *dp);
diff --git a/net/dccp/input.c b/net/dccp/input.c
index e424a09e83f6..15af247ea007 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -160,13 +160,15 @@ static void dccp_rcv_reset(struct sock *sk, struct sk_buff *skb)
         dccp_time_wait(sk, DCCP_TIME_WAIT, 0);
 }
 
-static void dccp_event_ack_recv(struct sock *sk, struct sk_buff *skb)
+static void dccp_handle_ackvec_processing(struct sock *sk, struct sk_buff *skb)
 {
-        struct dccp_sock *dp = dccp_sk(sk);
+        struct dccp_ackvec *av = dccp_sk(sk)->dccps_hc_rx_ackvec;
 
-        if (dp->dccps_hc_rx_ackvec != NULL)
-                dccp_ackvec_check_rcv_ackno(dp->dccps_hc_rx_ackvec, sk,
-                                            DCCP_SKB_CB(skb)->dccpd_ack_seq);
+        if (av == NULL)
+                return;
+        if (DCCP_SKB_CB(skb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
+                dccp_ackvec_clear_state(av, DCCP_SKB_CB(skb)->dccpd_ack_seq);
+        dccp_ackvec_input(av, skb);
 }
 
 static void dccp_deliver_input_to_ccids(struct sock *sk, struct sk_buff *skb)
@@ -366,22 +368,13 @@ discard:
 int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
                          const struct dccp_hdr *dh, const unsigned len)
 {
-        struct dccp_sock *dp = dccp_sk(sk);
-
         if (dccp_check_seqno(sk, skb))
                 goto discard;
 
         if (dccp_parse_options(sk, NULL, skb))
                 return 1;
 
-        if (DCCP_SKB_CB(skb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
-                dccp_event_ack_recv(sk, skb);
-
-        if (dp->dccps_hc_rx_ackvec != NULL &&
-            dccp_ackvec_add(dp->dccps_hc_rx_ackvec, sk,
-                            DCCP_SKB_CB(skb)->dccpd_seq,
-                            DCCP_ACKVEC_STATE_RECEIVED))
-                goto discard;
+        dccp_handle_ackvec_processing(sk, skb);
         dccp_deliver_input_to_ccids(sk, skb);
 
         return __dccp_rcv_established(sk, skb, dh, len);
@@ -633,15 +626,7 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
                 if (dccp_parse_options(sk, NULL, skb))
                         return 1;
 
-                if (dcb->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
-                        dccp_event_ack_recv(sk, skb);
-
-                if (dp->dccps_hc_rx_ackvec != NULL &&
-                    dccp_ackvec_add(dp->dccps_hc_rx_ackvec, sk,
-                                    DCCP_SKB_CB(skb)->dccpd_seq,
-                                    DCCP_ACKVEC_STATE_RECEIVED))
-                        goto discard;
-
+                dccp_handle_ackvec_processing(sk, skb);
                 dccp_deliver_input_to_ccids(sk, skb);
         }
 
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 3f69ea114829..45a434f94169 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -462,15 +462,12 @@ static struct dst_entry* dccp_v4_route_skb(struct net *net, struct sock *sk,
 {
         struct rtable *rt;
         struct flowi fl = { .oif = skb_rtable(skb)->rt_iif,
-                            .nl_u = { .ip4_u =
-                                      { .daddr = ip_hdr(skb)->saddr,
-                                        .saddr = ip_hdr(skb)->daddr,
-                                        .tos = RT_CONN_FLAGS(sk) } },
+                            .fl4_dst = ip_hdr(skb)->saddr,
+                            .fl4_src = ip_hdr(skb)->daddr,
+                            .fl4_tos = RT_CONN_FLAGS(sk),
                             .proto = sk->sk_protocol,
-                            .uli_u = { .ports =
-                                       { .sport = dccp_hdr(skb)->dccph_dport,
-                                         .dport = dccp_hdr(skb)->dccph_sport }
-                                     }
+                            .fl_ip_sport = dccp_hdr(skb)->dccph_dport,
+                            .fl_ip_dport = dccp_hdr(skb)->dccph_sport
                           };
 
         security_skb_classify_flow(skb, &fl);
diff --git a/net/dccp/options.c b/net/dccp/options.c
index cd3061813009..f06ffcfc8d71 100644
--- a/net/dccp/options.c
+++ b/net/dccp/options.c
@@ -54,7 +54,6 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
         struct dccp_sock *dp = dccp_sk(sk);
         const struct dccp_hdr *dh = dccp_hdr(skb);
         const u8 pkt_type = DCCP_SKB_CB(skb)->dccpd_type;
-        u64 ackno = DCCP_SKB_CB(skb)->dccpd_ack_seq;
         unsigned char *options = (unsigned char *)dh + dccp_hdr_len(skb);
         unsigned char *opt_ptr = options;
         const unsigned char *opt_end = (unsigned char *)dh +
@@ -129,14 +128,6 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
                         if (rc)
                                 goto out_featneg_failed;
                         break;
-                case DCCPO_ACK_VECTOR_0:
-                case DCCPO_ACK_VECTOR_1:
-                        if (dccp_packet_without_ack(skb))   /* RFC 4340, 11.4 */
-                                break;
-                        if (dp->dccps_hc_rx_ackvec != NULL &&
-                            dccp_ackvec_parse(sk, skb, &ackno, opt, value, len))
-                                goto out_invalid_option;
-                        break;
                 case DCCPO_TIMESTAMP:
                         if (len != 4)
                                 goto out_invalid_option;
@@ -226,6 +217,16 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
                                                      pkt_type, opt, value, len))
                                 goto out_invalid_option;
                         break;
+                case DCCPO_ACK_VECTOR_0:
+                case DCCPO_ACK_VECTOR_1:
+                        if (dccp_packet_without_ack(skb))   /* RFC 4340, 11.4 */
+                                break;
+                        /*
+                         * Ack vectors are processed by the TX CCID if it is
+                         * interested. The RX CCID need not parse Ack Vectors,
+                         * since it is only interested in clearing old state.
+                         * Fall through.
+                         */
                 case DCCPO_MIN_TX_CCID_SPECIFIC ... DCCPO_MAX_TX_CCID_SPECIFIC:
                         if (ccid_hc_tx_parse_options(dp->dccps_hc_tx_ccid, sk,
                                                      pkt_type, opt, value, len))
@@ -340,6 +341,7 @@ static inline int dccp_elapsed_time_len(const u32 elapsed_time)
         return elapsed_time == 0 ? 0 : elapsed_time <= 0xFFFF ? 2 : 4;
 }
 
+/* FIXME: This function is currently not used anywhere */
 int dccp_insert_option_elapsed_time(struct sk_buff *skb, u32 elapsed_time)
 {
         const int elapsed_time_len = dccp_elapsed_time_len(elapsed_time);
@@ -424,6 +426,83 @@ static int dccp_insert_option_timestamp_echo(struct dccp_sock *dp,
         return 0;
 }
 
+static int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)
+{
+        struct dccp_sock *dp = dccp_sk(sk);
+        struct dccp_ackvec *av = dp->dccps_hc_rx_ackvec;
+        struct dccp_skb_cb *dcb = DCCP_SKB_CB(skb);
+        const u16 buflen = dccp_ackvec_buflen(av);
+        /* Figure out how many options do we need to represent the ackvec */
+        const u8 nr_opts = DIV_ROUND_UP(buflen, DCCP_SINGLE_OPT_MAXLEN);
+        u16 len = buflen + 2 * nr_opts;
+        u8 i, nonce = 0;
+        const unsigned char *tail, *from;
+        unsigned char *to;
+
+        if (dcb->dccpd_opt_len + len > DCCP_MAX_OPT_LEN) {
+                DCCP_WARN("Lacking space for %u bytes on %s packet\n", len,
+                          dccp_packet_name(dcb->dccpd_type));
+                return -1;
+        }
+        /*
+         * Since Ack Vectors are variable-length, we can not always predict
+         * their size. To catch exception cases where the space is running out
+         * on the skb, a separate Sync is scheduled to carry the Ack Vector.
+         */
+        if (len > DCCPAV_MIN_OPTLEN &&
+            len + dcb->dccpd_opt_len + skb->len > dp->dccps_mss_cache) {
+                DCCP_WARN("No space left for Ack Vector (%u) on skb (%u+%u), "
+                          "MPS=%u ==> reduce payload size?\n", len, skb->len,
+                          dcb->dccpd_opt_len, dp->dccps_mss_cache);
+                dp->dccps_sync_scheduled = 1;
+                return 0;
+        }
+        dcb->dccpd_opt_len += len;
+
+        to   = skb_push(skb, len);
+        len  = buflen;
+        from = av->av_buf + av->av_buf_head;
+        tail = av->av_buf + DCCPAV_MAX_ACKVEC_LEN;
+
+        for (i = 0; i < nr_opts; ++i) {
+                int copylen = len;
+
+                if (len > DCCP_SINGLE_OPT_MAXLEN)
+                        copylen = DCCP_SINGLE_OPT_MAXLEN;
+
+                /*
+                 * RFC 4340, 12.2: Encode the Nonce Echo for this Ack Vector via
+                 * its type; ack_nonce is the sum of all individual buf_nonce's.
+                 */
+                nonce ^= av->av_buf_nonce[i];
+
+                *to++ = DCCPO_ACK_VECTOR_0 + av->av_buf_nonce[i];
+                *to++ = copylen + 2;
+
+                /* Check if buf_head wraps */
+                if (from + copylen > tail) {
+                        const u16 tailsize = tail - from;
+
+                        memcpy(to, from, tailsize);
+                        to      += tailsize;
+                        len     -= tailsize;
+                        copylen -= tailsize;
+                        from    = av->av_buf;
+                }
+
+                memcpy(to, from, copylen);
+                from += copylen;
+                to   += copylen;
+                len  -= copylen;
+        }
+        /*
+         * Each sent Ack Vector is recorded in the list, as per A.2 of RFC 4340.
+         */
+        if (dccp_ackvec_update_records(av, dcb->dccpd_seq, nonce))
+                return -ENOBUFS;
+        return 0;
+}
+
 /**
  * dccp_insert_option_mandatory  -  Mandatory option (5.8.2)
  * Note that since we are using skb_push, this function needs to be called
@@ -519,8 +598,7 @@ int dccp_insert_options(struct sock *sk, struct sk_buff *skb)
                         if (dccp_insert_option_timestamp(skb))
                                 return -1;
 
-                } else if (dp->dccps_hc_rx_ackvec != NULL &&
-                           dccp_ackvec_pending(dp->dccps_hc_rx_ackvec) &&
+                } else if (dccp_ackvec_pending(sk) &&
                            dccp_insert_option_ackvec(sk, skb)) {
                                 return -1;
                 }
diff --git a/net/dccp/output.c b/net/dccp/output.c
index 45b91853f5ae..784d30210543 100644
--- a/net/dccp/output.c
+++ b/net/dccp/output.c
@@ -242,7 +242,7 @@ static void dccp_xmit_packet(struct sock *sk)
 {
         int err, len;
         struct dccp_sock *dp = dccp_sk(sk);
-        struct sk_buff *skb = skb_dequeue(&sk->sk_write_queue);
+        struct sk_buff *skb = dccp_qpolicy_pop(sk);
 
         if (unlikely(skb == NULL))
                 return;
@@ -283,6 +283,15 @@ static void dccp_xmit_packet(struct sock *sk)
          * any local drop will eventually be reported via receiver feedback.
          */
         ccid_hc_tx_packet_sent(dp->dccps_hc_tx_ccid, sk, len);
+
+        /*
+         * If the CCID needs to transfer additional header options out-of-band
+         * (e.g. Ack Vectors or feature-negotiation options), it activates this
+         * flag to schedule a Sync. The Sync will automatically incorporate all
+         * currently pending header options, thus clearing the backlog.
+         */
+        if (dp->dccps_sync_scheduled)
+                dccp_send_sync(sk, dp->dccps_gsr, DCCP_PKT_SYNC);
 }
 
 /**
@@ -336,7 +345,7 @@ void dccp_write_xmit(struct sock *sk)
         struct dccp_sock *dp = dccp_sk(sk);
         struct sk_buff *skb;
 
-        while ((skb = skb_peek(&sk->sk_write_queue))) {
+        while ((skb = dccp_qpolicy_top(sk))) {
                 int rc = ccid_hc_tx_send_packet(dp->dccps_hc_tx_ccid, sk, skb);
 
                 switch (ccid_packet_dequeue_eval(rc)) {
@@ -350,8 +359,7 @@ void dccp_write_xmit(struct sock *sk)
                         dccp_xmit_packet(sk);
                         break;
                 case CCID_PACKET_ERR:
-                        skb_dequeue(&sk->sk_write_queue);
-                        kfree_skb(skb);
+                        dccp_qpolicy_drop(sk, skb);
                         dccp_pr_debug("packet discarded due to err=%d\n", rc);
                 }
         }
@@ -636,6 +644,12 @@ void dccp_send_sync(struct sock *sk, const u64 ackno,
         DCCP_SKB_CB(skb)->dccpd_type = pkt_type;
         DCCP_SKB_CB(skb)->dccpd_ack_seq = ackno;
 
+        /*
+         * Clear the flag in case the Sync was scheduled for out-of-band data,
+         * such as carrying a long Ack Vector.
+         */
+        dccp_sk(sk)->dccps_sync_scheduled = 0;
+
         dccp_transmit_skb(sk, skb);
 }
 
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index ef343d53fcea..152975d942d9 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -185,6 +185,7 @@ int dccp_init_sock(struct sock *sk, const __u8 ctl_sock_initialized)
         dp->dccps_role          = DCCP_ROLE_UNDEFINED;
         dp->dccps_service       = DCCP_SERVICE_CODE_IS_ABSENT;
         dp->dccps_l_ack_ratio   = dp->dccps_r_ack_ratio = 1;
+        dp->dccps_tx_qlen       = sysctl_dccp_tx_qlen;
 
         dccp_init_xmit_timers(sk);
 
@@ -532,6 +533,20 @@ static int do_dccp_setsockopt(struct sock *sk, int level, int optname,
         case DCCP_SOCKOPT_RECV_CSCOV:
                 err = dccp_setsockopt_cscov(sk, val, true);
                 break;
+        case DCCP_SOCKOPT_QPOLICY_ID:
+                if (sk->sk_state != DCCP_CLOSED)
+                        err = -EISCONN;
+                else if (val < 0 || val >= DCCPQ_POLICY_MAX)
+                        err = -EINVAL;
+                else
+                        dp->dccps_qpolicy = val;
+                break;
+        case DCCP_SOCKOPT_QPOLICY_TXQLEN:
+                if (val < 0)
+                        err = -EINVAL;
+                else
+                        dp->dccps_tx_qlen = val;
+                break;
         default:
                 err = -ENOPROTOOPT;
                 break;
@@ -639,6 +654,12 @@ static int do_dccp_getsockopt(struct sock *sk, int level, int optname,
         case DCCP_SOCKOPT_RECV_CSCOV:
                 val = dp->dccps_pcrlen;
                 break;
+        case DCCP_SOCKOPT_QPOLICY_ID:
+                val = dp->dccps_qpolicy;
+                break;
+        case DCCP_SOCKOPT_QPOLICY_TXQLEN:
+                val = dp->dccps_tx_qlen;
+                break;
         case 128 ... 191:
                 return ccid_hc_rx_getsockopt(dp->dccps_hc_rx_ccid, sk, optname,
                                              len, (u32 __user *)optval, optlen);
@@ -681,6 +702,47 @@ int compat_dccp_getsockopt(struct sock *sk, int level, int optname,
 EXPORT_SYMBOL_GPL(compat_dccp_getsockopt);
 #endif
 
+static int dccp_msghdr_parse(struct msghdr *msg, struct sk_buff *skb)
+{
+        struct cmsghdr *cmsg = CMSG_FIRSTHDR(msg);
+
+        /*
+         * Assign an (opaque) qpolicy priority value to skb->priority.
+         *
+         * We are overloading this skb field for use with the qpolicy subystem.
+         * The skb->priority is normally used for the SO_PRIORITY option, which
+         * is initialised from sk_priority. Since the assignment of sk_priority
+         * to skb->priority happens later (on layer 3), we overload this field
+         * for use with queueing priorities as long as the skb is on layer 4.
+         * The default priority value (if nothing is set) is 0.
+         */
+        skb->priority = 0;
+
+        for (; cmsg != NULL; cmsg = CMSG_NXTHDR(msg, cmsg)) {
+
+                if (!CMSG_OK(msg, cmsg))
+                        return -EINVAL;
+
+                if (cmsg->cmsg_level != SOL_DCCP)
+                        continue;
+
+                if (cmsg->cmsg_type <= DCCP_SCM_QPOLICY_MAX &&
+                    !dccp_qpolicy_param_ok(skb->sk, cmsg->cmsg_type))
+                        return -EINVAL;
+
+                switch (cmsg->cmsg_type) {
+                case DCCP_SCM_PRIORITY:
+                        if (cmsg->cmsg_len != CMSG_LEN(sizeof(__u32)))
+                                return -EINVAL;
+                        skb->priority = *(__u32 *)CMSG_DATA(cmsg);
+                        break;
+                default:
+                        return -EINVAL;
+                }
+        }
+        return 0;
+}
+
 int dccp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
                  size_t len)
 {
@@ -696,8 +758,7 @@ int dccp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 
         lock_sock(sk);
 
-        if (sysctl_dccp_tx_qlen &&
-            (sk->sk_write_queue.qlen >= sysctl_dccp_tx_qlen)) {
+        if (dccp_qpolicy_full(sk)) {
                 rc = -EAGAIN;
                 goto out_release;
         }
@@ -725,7 +786,11 @@ int dccp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
         if (rc != 0)
                 goto out_discard;
 
-        skb_queue_tail(&sk->sk_write_queue, skb);
+        rc = dccp_msghdr_parse(msg, skb);
+        if (rc != 0)
+                goto out_discard;
+
+        dccp_qpolicy_push(sk, skb);
         /*
          * The xmit_timer is set if the TX CCID is rate-based and will expire
          * when congestion control permits to release further packets into the
diff --git a/net/dccp/qpolicy.c b/net/dccp/qpolicy.c
new file mode 100644
index 000000000000..63c30bfa4703
--- /dev/null
+++ b/net/dccp/qpolicy.c
@@ -0,0 +1,137 @@
+/*
+ *  net/dccp/qpolicy.c
+ *
+ *  Policy-based packet dequeueing interface for DCCP.
+ *
+ *  Copyright (c) 2008 Tomasz Grobelny <tomasz@grobelny.oswiecenia.net>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License v2
+ *  as published by the Free Software Foundation.
+ */
+#include "dccp.h"
+
+/*
+ *      Simple Dequeueing Policy:
+ *      If tx_qlen is different from 0, enqueue up to tx_qlen elements.
+ */
+static void qpolicy_simple_push(struct sock *sk, struct sk_buff *skb)
+{
+        skb_queue_tail(&sk->sk_write_queue, skb);
+}
+
+static bool qpolicy_simple_full(struct sock *sk)
+{
+        return dccp_sk(sk)->dccps_tx_qlen &&
+               sk->sk_write_queue.qlen >= dccp_sk(sk)->dccps_tx_qlen;
+}
+
+static struct sk_buff *qpolicy_simple_top(struct sock *sk)
+{
+        return skb_peek(&sk->sk_write_queue);
+}
+
+/*
+ *      Priority-based Dequeueing Policy:
+ *      If tx_qlen is different from 0 and the queue has reached its upper bound
+ *      of tx_qlen elements, replace older packets lowest-priority-first.
+ */
+static struct sk_buff *qpolicy_prio_best_skb(struct sock *sk)
+{
+        struct sk_buff *skb, *best = NULL;
+
+        skb_queue_walk(&sk->sk_write_queue, skb)
+                if (best == NULL || skb->priority > best->priority)
+                        best = skb;
+        return best;
+}
+
+static struct sk_buff *qpolicy_prio_worst_skb(struct sock *sk)
+{
+        struct sk_buff *skb, *worst = NULL;
+
+        skb_queue_walk(&sk->sk_write_queue, skb)
+                if (worst == NULL || skb->priority < worst->priority)
+                        worst = skb;
+        return worst;
+}
+
+static bool qpolicy_prio_full(struct sock *sk)
+{
+        if (qpolicy_simple_full(sk))
+                dccp_qpolicy_drop(sk, qpolicy_prio_worst_skb(sk));
+        return false;
+}
+
+/**
+ * struct dccp_qpolicy_operations  -  TX Packet Dequeueing Interface
+ * @push: add a new @skb to the write queue
+ * @full: indicates that no more packets will be admitted
+ * @top:  peeks at whatever the queueing policy defines as its `top'
+ */
+static struct dccp_qpolicy_operations {
+        void            (*push) (struct sock *sk, struct sk_buff *skb);
+        bool            (*full) (struct sock *sk);
+        struct sk_buff* (*top)  (struct sock *sk);
+        __be32          params;
+
+} qpol_table[DCCPQ_POLICY_MAX] = {
+        [DCCPQ_POLICY_SIMPLE] = {
+                .push   = qpolicy_simple_push,
+                .full   = qpolicy_simple_full,
+                .top    = qpolicy_simple_top,
+                .params = 0,
+        },
+        [DCCPQ_POLICY_PRIO] = {
+                .push   = qpolicy_simple_push,
+                .full   = qpolicy_prio_full,
+                .top    = qpolicy_prio_best_skb,
+                .params = DCCP_SCM_PRIORITY,
+        },
+};
+
+/*
+ *      Externally visible interface
+ */
+void dccp_qpolicy_push(struct sock *sk, struct sk_buff *skb)
+{
+        qpol_table[dccp_sk(sk)->dccps_qpolicy].push(sk, skb);
+}
+
+bool dccp_qpolicy_full(struct sock *sk)
+{
+        return qpol_table[dccp_sk(sk)->dccps_qpolicy].full(sk);
+}
+
+void dccp_qpolicy_drop(struct sock *sk, struct sk_buff *skb)
+{
+        if (skb != NULL) {
+                skb_unlink(skb, &sk->sk_write_queue);
+                kfree_skb(skb);
+        }
+}
+
+struct sk_buff *dccp_qpolicy_top(struct sock *sk)
+{
+        return qpol_table[dccp_sk(sk)->dccps_qpolicy].top(sk);
+}
+
+struct sk_buff *dccp_qpolicy_pop(struct sock *sk)
+{
+        struct sk_buff *skb = dccp_qpolicy_top(sk);
+
+        if (skb != NULL) {
+                /* Clear any skb fields that we used internally */
+                skb->priority = 0;
+                skb_unlink(skb, &sk->sk_write_queue);
+        }
+        return skb;
+}
+
+bool dccp_qpolicy_param_ok(struct sock *sk, __be32 param)
+{
+        /* check if exactly one bit is set */
+        if (!param || (param & (param - 1)))
+                return false;
+        return (qpol_table[dccp_sk(sk)->dccps_qpolicy].params & param) == param;
+}
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index 6f97268ed85f..2af15b15d1fa 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -829,7 +829,7 @@ static int dn_confirm_accept(struct sock *sk, long *timeo, gfp_t allocation)
                 return -EINVAL;
 
         scp->state = DN_CC;
-        scp->segsize_loc = dst_metric(__sk_dst_get(sk), RTAX_ADVMSS);
+        scp->segsize_loc = dst_metric_advmss(__sk_dst_get(sk));
         dn_send_conn_conf(sk, allocation);
 
         prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
@@ -958,7 +958,7 @@ static int __dn_connect(struct sock *sk, struct sockaddr_dn *addr, int addrlen,
         sk->sk_route_caps = sk->sk_dst_cache->dev->features;
         sock->state = SS_CONNECTING;
         scp->state = DN_CI;
-        scp->segsize_loc = dst_metric(sk->sk_dst_cache, RTAX_ADVMSS);
+        scp->segsize_loc = dst_metric_advmss(sk->sk_dst_cache);
 
         dn_nsp_send_conninit(sk, NSP_CI);
         err = -EINPROGRESS;
@@ -1850,7 +1850,7 @@ unsigned dn_mss_from_pmtu(struct net_device *dev, int mtu)
 {
         unsigned mss = 230 - DN_MAX_NSP_DATA_HEADER;
         if (dev) {
-                struct dn_dev *dn_db = dev->dn_ptr;
+                struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr);
                 mtu -= LL_RESERVED_SPACE(dev);
                 if (dn_db->use_long)
                         mtu -= 21;
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index 4c409b46aa35..0ba15633c418 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -267,7 +267,7 @@ static int dn_forwarding_proc(ctl_table *table, int write,
         if (table->extra1 == NULL)
                 return -EINVAL;
 
-        dn_db = dev->dn_ptr;
+        dn_db = rcu_dereference_raw(dev->dn_ptr);
         old = dn_db->parms.forwarding;
 
         err = proc_dointvec(table, write, buffer, lenp, ppos);
@@ -332,14 +332,19 @@ static struct dn_ifaddr *dn_dev_alloc_ifa(void)
         return ifa;
 }
 
-static __inline__ void dn_dev_free_ifa(struct dn_ifaddr *ifa)
+static void dn_dev_free_ifa_rcu(struct rcu_head *head)
 {
-        kfree(ifa);
+        kfree(container_of(head, struct dn_ifaddr, rcu));
 }
 
-static void dn_dev_del_ifa(struct dn_dev *dn_db, struct dn_ifaddr **ifap, int destroy)
+static void dn_dev_free_ifa(struct dn_ifaddr *ifa)
 {
-        struct dn_ifaddr *ifa1 = *ifap;
+        call_rcu(&ifa->rcu, dn_dev_free_ifa_rcu);
+}
+
+static void dn_dev_del_ifa(struct dn_dev *dn_db, struct dn_ifaddr __rcu **ifap, int destroy)
+{
+        struct dn_ifaddr *ifa1 = rtnl_dereference(*ifap);
         unsigned char mac_addr[6];
         struct net_device *dev = dn_db->dev;
 
@@ -373,7 +378,9 @@ static int dn_dev_insert_ifa(struct dn_dev *dn_db, struct dn_ifaddr *ifa)
         ASSERT_RTNL();
 
         /* Check for duplicates */
-        for(ifa1 = dn_db->ifa_list; ifa1; ifa1 = ifa1->ifa_next) {
+        for (ifa1 = rtnl_dereference(dn_db->ifa_list);
+             ifa1 != NULL;
+             ifa1 = rtnl_dereference(ifa1->ifa_next)) {
                 if (ifa1->ifa_local == ifa->ifa_local)
                         return -EEXIST;
         }
@@ -386,7 +393,7 @@ static int dn_dev_insert_ifa(struct dn_dev *dn_db, struct dn_ifaddr *ifa)
         }
 
         ifa->ifa_next = dn_db->ifa_list;
-        dn_db->ifa_list = ifa;
+        rcu_assign_pointer(dn_db->ifa_list, ifa);
 
         dn_ifaddr_notify(RTM_NEWADDR, ifa);
         blocking_notifier_call_chain(&dnaddr_chain, NETDEV_UP, ifa);
@@ -396,7 +403,7 @@ static int dn_dev_insert_ifa(struct dn_dev *dn_db, struct dn_ifaddr *ifa)
 
 static int dn_dev_set_ifa(struct net_device *dev, struct dn_ifaddr *ifa)
 {
-        struct dn_dev *dn_db = dev->dn_ptr;
+        struct dn_dev *dn_db = rtnl_dereference(dev->dn_ptr);
         int rv;
 
         if (dn_db == NULL) {
@@ -425,7 +432,8 @@ int dn_dev_ioctl(unsigned int cmd, void __user *arg)
         struct sockaddr_dn *sdn = (struct sockaddr_dn *)&ifr->ifr_addr;
         struct dn_dev *dn_db;
         struct net_device *dev;
-        struct dn_ifaddr *ifa = NULL, **ifap = NULL;
+        struct dn_ifaddr *ifa = NULL;
+        struct dn_ifaddr __rcu **ifap = NULL;
         int ret = 0;
 
         if (copy_from_user(ifr, arg, DN_IFREQ_SIZE))
@@ -454,8 +462,10 @@ int dn_dev_ioctl(unsigned int cmd, void __user *arg)
                 goto done;
         }
 
-        if ((dn_db = dev->dn_ptr) != NULL) {
-                for (ifap = &dn_db->ifa_list; (ifa=*ifap) != NULL; ifap = &ifa->ifa_next)
+        if ((dn_db = rtnl_dereference(dev->dn_ptr)) != NULL) {
+                for (ifap = &dn_db->ifa_list;
+                     (ifa = rtnl_dereference(*ifap)) != NULL;
+                     ifap = &ifa->ifa_next)
                         if (strcmp(ifr->ifr_name, ifa->ifa_label) == 0)
                                 break;
         }
@@ -558,7 +568,7 @@ static struct dn_dev *dn_dev_by_index(int ifindex)
 
         dev = __dev_get_by_index(&init_net, ifindex);
         if (dev)
-                dn_dev = dev->dn_ptr;
+                dn_dev = rtnl_dereference(dev->dn_ptr);
 
         return dn_dev;
 }
@@ -576,7 +586,8 @@ static int dn_nl_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
         struct nlattr *tb[IFA_MAX+1];
         struct dn_dev *dn_db;
         struct ifaddrmsg *ifm;
-        struct dn_ifaddr *ifa, **ifap;
+        struct dn_ifaddr *ifa;
+        struct dn_ifaddr __rcu **ifap;
         int err = -EINVAL;
 
         if (!net_eq(net, &init_net))
@@ -592,7 +603,9 @@ static int dn_nl_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
                 goto errout;
 
         err = -EADDRNOTAVAIL;
-        for (ifap = &dn_db->ifa_list; (ifa = *ifap); ifap = &ifa->ifa_next) {
+        for (ifap = &dn_db->ifa_list;
+             (ifa = rtnl_dereference(*ifap)) != NULL;
+             ifap = &ifa->ifa_next) {
                 if (tb[IFA_LOCAL] &&
                     nla_memcmp(tb[IFA_LOCAL], &ifa->ifa_local, 2))
                         continue;
@@ -632,7 +645,7 @@ static int dn_nl_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
         if ((dev = __dev_get_by_index(&init_net, ifm->ifa_index)) == NULL)
                 return -ENODEV;
 
-        if ((dn_db = dev->dn_ptr) == NULL) {
+        if ((dn_db = rtnl_dereference(dev->dn_ptr)) == NULL) {
                 dn_db = dn_dev_create(dev, &err);
                 if (!dn_db)
                         return err;
@@ -748,11 +761,11 @@ static int dn_nl_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
                         skip_naddr = 0;
                 }
 
-                if ((dn_db = dev->dn_ptr) == NULL)
+                if ((dn_db = rtnl_dereference(dev->dn_ptr)) == NULL)
                         goto cont;
 
-                for (ifa = dn_db->ifa_list, dn_idx = 0; ifa;
-                     ifa = ifa->ifa_next, dn_idx++) {
+                for (ifa = rtnl_dereference(dn_db->ifa_list), dn_idx = 0; ifa;
+                     ifa = rtnl_dereference(ifa->ifa_next), dn_idx++) {
                         if (dn_idx < skip_naddr)
                                 continue;
 
@@ -773,21 +786,22 @@ done:
 
 static int dn_dev_get_first(struct net_device *dev, __le16 *addr)
 {
-        struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
+        struct dn_dev *dn_db;
         struct dn_ifaddr *ifa;
         int rv = -ENODEV;
 
+        rcu_read_lock();
+        dn_db = rcu_dereference(dev->dn_ptr);
         if (dn_db == NULL)
                 goto out;
 
-        rtnl_lock();
-        ifa = dn_db->ifa_list;
+        ifa = rcu_dereference(dn_db->ifa_list);
         if (ifa != NULL) {
                 *addr = ifa->ifa_local;
                 rv = 0;
         }
-        rtnl_unlock();
 out:
+        rcu_read_unlock();
         return rv;
 }
 
@@ -823,7 +837,7 @@ static void dn_send_endnode_hello(struct net_device *dev, struct dn_ifaddr *ifa)
         struct endnode_hello_message *msg;
         struct sk_buff *skb = NULL;
         __le16 *pktlen;
-        struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
+        struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr);
 
         if ((skb = dn_alloc_skb(NULL, sizeof(*msg), GFP_ATOMIC)) == NULL)
                 return;
@@ -889,7 +903,7 @@ static int dn_am_i_a_router(struct dn_neigh *dn, struct dn_dev *dn_db, struct dn
 static void dn_send_router_hello(struct net_device *dev, struct dn_ifaddr *ifa)
 {
         int n;
-        struct dn_dev *dn_db = dev->dn_ptr;
+        struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr);
         struct dn_neigh *dn = (struct dn_neigh *)dn_db->router;
         struct sk_buff *skb;
         size_t size;
@@ -960,7 +974,7 @@ static void dn_send_router_hello(struct net_device *dev, struct dn_ifaddr *ifa)
 
 static void dn_send_brd_hello(struct net_device *dev, struct dn_ifaddr *ifa)
 {
-        struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
+        struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr);
 
         if (dn_db->parms.forwarding == 0)
                 dn_send_endnode_hello(dev, ifa);
@@ -998,7 +1012,7 @@ static void dn_send_ptp_hello(struct net_device *dev, struct dn_ifaddr *ifa)
 
 static int dn_eth_up(struct net_device *dev)
 {
-        struct dn_dev *dn_db = dev->dn_ptr;
+        struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr);
 
         if (dn_db->parms.forwarding == 0)
                 dev_mc_add(dev, dn_rt_all_end_mcast);
@@ -1012,7 +1026,7 @@ static int dn_eth_up(struct net_device *dev)
 
 static void dn_eth_down(struct net_device *dev)
 {
-        struct dn_dev *dn_db = dev->dn_ptr;
+        struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr);
 
         if (dn_db->parms.forwarding == 0)
                 dev_mc_del(dev, dn_rt_all_end_mcast);
@@ -1025,12 +1039,16 @@ static void dn_dev_set_timer(struct net_device *dev);
 static void dn_dev_timer_func(unsigned long arg)
 {
         struct net_device *dev = (struct net_device *)arg;
-        struct dn_dev *dn_db = dev->dn_ptr;
+        struct dn_dev *dn_db;
         struct dn_ifaddr *ifa;
 
+        rcu_read_lock();
+        dn_db = rcu_dereference(dev->dn_ptr);
         if (dn_db->t3 <= dn_db->parms.t2) {
                 if (dn_db->parms.timer3) {
-                        for(ifa = dn_db->ifa_list; ifa; ifa = ifa->ifa_next) {
+                        for (ifa = rcu_dereference(dn_db->ifa_list);
+                             ifa;
+                             ifa = rcu_dereference(ifa->ifa_next)) {
                                 if (!(ifa->ifa_flags & IFA_F_SECONDARY))
                                         dn_db->parms.timer3(dev, ifa);
                         }
@@ -1039,13 +1057,13 @@ static void dn_dev_timer_func(unsigned long arg)
         } else {
                 dn_db->t3 -= dn_db->parms.t2;
         }
-
+        rcu_read_unlock();
         dn_dev_set_timer(dev);
 }
 
 static void dn_dev_set_timer(struct net_device *dev)
 {
-        struct dn_dev *dn_db = dev->dn_ptr;
+        struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr);
 
         if (dn_db->parms.t2 > dn_db->parms.t3)
                 dn_db->parms.t2 = dn_db->parms.t3;
@@ -1077,8 +1095,8 @@ static struct dn_dev *dn_dev_create(struct net_device *dev, int *err)
                 return NULL;
 
         memcpy(&dn_db->parms, p, sizeof(struct dn_dev_parms));
-        smp_wmb();
-        dev->dn_ptr = dn_db;
+
+        rcu_assign_pointer(dev->dn_ptr, dn_db);
         dn_db->dev = dev;
         init_timer(&dn_db->timer);
 
@@ -1086,7 +1104,7 @@ static struct dn_dev *dn_dev_create(struct net_device *dev, int *err)
 
         dn_db->neigh_parms = neigh_parms_alloc(dev, &dn_neigh_table);
         if (!dn_db->neigh_parms) {
-                dev->dn_ptr = NULL;
+                rcu_assign_pointer(dev->dn_ptr, NULL);
                 kfree(dn_db);
                 return NULL;
         }
@@ -1125,7 +1143,7 @@ void dn_dev_up(struct net_device *dev)
         struct dn_ifaddr *ifa;
         __le16 addr = decnet_address;
         int maybe_default = 0;
-        struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
+        struct dn_dev *dn_db = rtnl_dereference(dev->dn_ptr);
 
         if ((dev->type != ARPHRD_ETHER) && (dev->type != ARPHRD_LOOPBACK))
                 return;
@@ -1176,7 +1194,7 @@ void dn_dev_up(struct net_device *dev)
 
 static void dn_dev_delete(struct net_device *dev)
 {
-        struct dn_dev *dn_db = dev->dn_ptr;
+        struct dn_dev *dn_db = rtnl_dereference(dev->dn_ptr);
 
         if (dn_db == NULL)
                 return;
@@ -1204,13 +1222,13 @@ static void dn_dev_delete(struct net_device *dev)
 
 void dn_dev_down(struct net_device *dev)
 {
-        struct dn_dev *dn_db = dev->dn_ptr;
+        struct dn_dev *dn_db = rtnl_dereference(dev->dn_ptr);
         struct dn_ifaddr *ifa;
 
         if (dn_db == NULL)
                 return;
 
-        while((ifa = dn_db->ifa_list) != NULL) {
+        while ((ifa = rtnl_dereference(dn_db->ifa_list)) != NULL) {
                 dn_dev_del_ifa(dn_db, &dn_db->ifa_list, 0);
                 dn_dev_free_ifa(ifa);
         }
@@ -1270,7 +1288,7 @@ static inline int is_dn_dev(struct net_device *dev)
 }
 
 static void *dn_dev_seq_start(struct seq_file *seq, loff_t *pos)
-        __acquires(rcu)
+        __acquires(RCU)
 {
         int i;
         struct net_device *dev;
@@ -1313,7 +1331,7 @@ static void *dn_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 }
 
 static void dn_dev_seq_stop(struct seq_file *seq, void *v)
-        __releases(rcu)
+        __releases(RCU)
 {
         rcu_read_unlock();
 }
@@ -1340,7 +1358,7 @@ static int dn_dev_seq_show(struct seq_file *seq, void *v)
                 struct net_device *dev = v;
                 char peer_buf[DN_ASCBUF_LEN];
                 char router_buf[DN_ASCBUF_LEN];
-                struct dn_dev *dn_db = dev->dn_ptr;
+                struct dn_dev *dn_db = rcu_dereference(dev->dn_ptr);
 
                 seq_printf(seq, "%-8s %1s     %04u %04u   %04lu %04lu"
                                 "   %04hu    %03d %02x    %-10s %-7s %-7s\n",
diff --git a/net/decnet/dn_fib.c b/net/decnet/dn_fib.c
index 4ab96c15166d..0ef0a81bcd72 100644
--- a/net/decnet/dn_fib.c
+++ b/net/decnet/dn_fib.c
@@ -610,10 +610,12 @@ static void dn_fib_del_ifaddr(struct dn_ifaddr *ifa)
         /* Scan device list */
         rcu_read_lock();
         for_each_netdev_rcu(&init_net, dev) {
-                dn_db = dev->dn_ptr;
+                dn_db = rcu_dereference(dev->dn_ptr);
                 if (dn_db == NULL)
                         continue;
-                for(ifa2 = dn_db->ifa_list; ifa2; ifa2 = ifa2->ifa_next) {
+                for (ifa2 = rcu_dereference(dn_db->ifa_list);
+                     ifa2 != NULL;
+                     ifa2 = rcu_dereference(ifa2->ifa_next)) {
                         if (ifa2->ifa_local == ifa->ifa_local) {
                                 found_it = 1;
                                 break;
diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c
index a085dbcf5c7f..602dade7e9a3 100644
--- a/net/decnet/dn_neigh.c
+++ b/net/decnet/dn_neigh.c
@@ -391,7 +391,7 @@ int dn_neigh_router_hello(struct sk_buff *skb)
                 write_lock(&neigh->lock);
 
                 neigh->used = jiffies;
-                dn_db = (struct dn_dev *)neigh->dev->dn_ptr;
+                dn_db = rcu_dereference(neigh->dev->dn_ptr);
 
                 if (!(neigh->nud_state & NUD_PERMANENT)) {
                         neigh->updated = jiffies;
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index df0f3e54ff8a..5e636365d33c 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -93,7 +93,7 @@
 
 struct dn_rt_hash_bucket
 {
-        struct dn_route *chain;
+        struct dn_route __rcu *chain;
         spinlock_t lock;
 };
 
@@ -110,6 +110,8 @@ static unsigned long dn_rt_deadline;
 
 static int dn_dst_gc(struct dst_ops *ops);
 static struct dst_entry *dn_dst_check(struct dst_entry *, __u32);
+static unsigned int dn_dst_default_advmss(const struct dst_entry *dst);
+static unsigned int dn_dst_default_mtu(const struct dst_entry *dst);
 static struct dst_entry *dn_dst_negative_advice(struct dst_entry *);
 static void dn_dst_link_failure(struct sk_buff *);
 static void dn_dst_update_pmtu(struct dst_entry *dst, u32 mtu);
@@ -129,6 +131,8 @@ static struct dst_ops dn_dst_ops = {
         .gc_thresh =            128,
         .gc =                   dn_dst_gc,
         .check =                dn_dst_check,
+        .default_advmss =       dn_dst_default_advmss,
+        .default_mtu =          dn_dst_default_mtu,
         .negative_advice =      dn_dst_negative_advice,
         .link_failure =         dn_dst_link_failure,
         .update_pmtu =          dn_dst_update_pmtu,
@@ -157,15 +161,17 @@ static inline void dnrt_drop(struct dn_route *rt)
 static void dn_dst_check_expire(unsigned long dummy)
 {
         int i;
-        struct dn_route *rt, **rtp;
+        struct dn_route *rt;
+        struct dn_route __rcu **rtp;
         unsigned long now = jiffies;
         unsigned long expire = 120 * HZ;
 
-        for(i = 0; i <= dn_rt_hash_mask; i++) {
+        for (i = 0; i <= dn_rt_hash_mask; i++) {
                 rtp = &dn_rt_hash_table[i].chain;
 
                 spin_lock(&dn_rt_hash_table[i].lock);
-                while((rt=*rtp) != NULL) {
+                while ((rt = rcu_dereference_protected(*rtp,
+                                                lockdep_is_held(&dn_rt_hash_table[i].lock))) != NULL) {
                         if (atomic_read(&rt->dst.__refcnt) ||
                                         (now - rt->dst.lastuse) < expire) {
                                 rtp = &rt->dst.dn_next;
@@ -186,17 +192,19 @@ static void dn_dst_check_expire(unsigned long dummy)
 
 static int dn_dst_gc(struct dst_ops *ops)
 {
-        struct dn_route *rt, **rtp;
+        struct dn_route *rt;
+        struct dn_route __rcu **rtp;
         int i;
         unsigned long now = jiffies;
         unsigned long expire = 10 * HZ;
 
-        for(i = 0; i <= dn_rt_hash_mask; i++) {
+        for (i = 0; i <= dn_rt_hash_mask; i++) {
 
                 spin_lock_bh(&dn_rt_hash_table[i].lock);
                 rtp = &dn_rt_hash_table[i].chain;
 
-                while((rt=*rtp) != NULL) {
+                while ((rt = rcu_dereference_protected(*rtp,
+                                                lockdep_is_held(&dn_rt_hash_table[i].lock))) != NULL) {
                         if (atomic_read(&rt->dst.__refcnt) ||
                                         (now - rt->dst.lastuse) < expire) {
                                 rtp = &rt->dst.dn_next;
@@ -227,7 +235,7 @@ static void dn_dst_update_pmtu(struct dst_entry *dst, u32 mtu)
 {
         u32 min_mtu = 230;
         struct dn_dev *dn = dst->neighbour ?
-                            (struct dn_dev *)dst->neighbour->dev->dn_ptr : NULL;
+                            rcu_dereference_raw(dst->neighbour->dev->dn_ptr) : NULL;
 
         if (dn && dn->use_long == 0)
                 min_mtu -= 6;
@@ -236,13 +244,14 @@ static void dn_dst_update_pmtu(struct dst_entry *dst, u32 mtu)
 
         if (dst_metric(dst, RTAX_MTU) > mtu && mtu >= min_mtu) {
                 if (!(dst_metric_locked(dst, RTAX_MTU))) {
-                        dst->metrics[RTAX_MTU-1] = mtu;
+                        dst_metric_set(dst, RTAX_MTU, mtu);
                         dst_set_expires(dst, dn_rt_mtu_expires);
                 }
                 if (!(dst_metric_locked(dst, RTAX_ADVMSS))) {
                         u32 mss = mtu - DN_MAX_NSP_DATA_HEADER;
-                        if (dst_metric(dst, RTAX_ADVMSS) > mss)
-                                dst->metrics[RTAX_ADVMSS-1] = mss;
+                        u32 existing_mss = dst_metric_raw(dst, RTAX_ADVMSS);
+                        if (!existing_mss || existing_mss > mss)
+                                dst_metric_set(dst, RTAX_ADVMSS, mss);
                 }
         }
 }
@@ -267,23 +276,25 @@ static void dn_dst_link_failure(struct sk_buff *skb)
 
 static inline int compare_keys(struct flowi *fl1, struct flowi *fl2)
 {
-        return ((fl1->nl_u.dn_u.daddr ^ fl2->nl_u.dn_u.daddr) |
-                (fl1->nl_u.dn_u.saddr ^ fl2->nl_u.dn_u.saddr) |
+        return ((fl1->fld_dst ^ fl2->fld_dst) |
+                (fl1->fld_src ^ fl2->fld_src) |
                 (fl1->mark ^ fl2->mark) |
-                (fl1->nl_u.dn_u.scope ^ fl2->nl_u.dn_u.scope) |
+                (fl1->fld_scope ^ fl2->fld_scope) |
                 (fl1->oif ^ fl2->oif) |
                 (fl1->iif ^ fl2->iif)) == 0;
 }
 
 static int dn_insert_route(struct dn_route *rt, unsigned hash, struct dn_route **rp)
 {
-        struct dn_route *rth, **rthp;
+        struct dn_route *rth;
+        struct dn_route __rcu **rthp;
         unsigned long now = jiffies;
 
         rthp = &dn_rt_hash_table[hash].chain;
 
         spin_lock_bh(&dn_rt_hash_table[hash].lock);
-        while((rth = *rthp) != NULL) {
+        while ((rth = rcu_dereference_protected(*rthp,
+                                                lockdep_is_held(&dn_rt_hash_table[hash].lock))) != NULL) {
                 if (compare_keys(&rth->fl, &rt->fl)) {
                         /* Put it first */
                         *rthp = rth->dst.dn_next;
@@ -315,15 +326,15 @@ static void dn_run_flush(unsigned long dummy)
         int i;
         struct dn_route *rt, *next;
 
-        for(i = 0; i < dn_rt_hash_mask; i++) {
+        for (i = 0; i < dn_rt_hash_mask; i++) {
                 spin_lock_bh(&dn_rt_hash_table[i].lock);
 
-                if ((rt = xchg(&dn_rt_hash_table[i].chain, NULL)) == NULL)
+                if ((rt = xchg((struct dn_route **)&dn_rt_hash_table[i].chain, NULL)) == NULL)
                         goto nothing_to_declare;
 
-                for(; rt; rt=next) {
-                        next = rt->dst.dn_next;
-                        rt->dst.dn_next = NULL;
+                for(; rt; rt = next) {
+                        next = rcu_dereference_raw(rt->dst.dn_next);
+                        RCU_INIT_POINTER(rt->dst.dn_next, NULL);
                         dst_free((struct dst_entry *)rt);
                 }
 
@@ -458,15 +469,16 @@ static int dn_return_long(struct sk_buff *skb)
  */
 static int dn_route_rx_packet(struct sk_buff *skb)
 {
-        struct dn_skb_cb *cb = DN_SKB_CB(skb);
+        struct dn_skb_cb *cb;
         int err;
 
         if ((err = dn_route_input(skb)) == 0)
                 return dst_input(skb);
 
+        cb = DN_SKB_CB(skb);
         if (decnet_debug_level & 4) {
                 char *devname = skb->dev ? skb->dev->name : "???";
-                struct dn_skb_cb *cb = DN_SKB_CB(skb);
+
                 printk(KERN_DEBUG
                         "DECnet: dn_route_rx_packet: rt_flags=0x%02x dev=%s len=%d src=0x%04hx dst=0x%04hx err=%d type=%d\n",
                         (int)cb->rt_flags, devname, skb->len,
@@ -573,7 +585,7 @@ int dn_route_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type
         struct dn_skb_cb *cb;
         unsigned char flags = 0;
         __u16 len = le16_to_cpu(*(__le16 *)skb->data);
-        struct dn_dev *dn = (struct dn_dev *)dev->dn_ptr;
+        struct dn_dev *dn = rcu_dereference(dev->dn_ptr);
         unsigned char padlen = 0;
 
         if (!net_eq(dev_net(dev), &init_net))
@@ -728,7 +740,7 @@ static int dn_forward(struct sk_buff *skb)
 {
         struct dn_skb_cb *cb = DN_SKB_CB(skb);
         struct dst_entry *dst = skb_dst(skb);
-        struct dn_dev *dn_db = dst->dev->dn_ptr;
+        struct dn_dev *dn_db = rcu_dereference(dst->dev->dn_ptr);
         struct dn_route *rt;
         struct neighbour *neigh = dst->neighbour;
         int header_len;
@@ -788,19 +800,28 @@ static int dn_rt_bug(struct sk_buff *skb)
         return NET_RX_DROP;
 }
 
+static unsigned int dn_dst_default_advmss(const struct dst_entry *dst)
+{
+        return dn_mss_from_pmtu(dst->dev, dst_mtu(dst));
+}
+
+static unsigned int dn_dst_default_mtu(const struct dst_entry *dst)
+{
+        return dst->dev->mtu;
+}
+
 static int dn_rt_set_next_hop(struct dn_route *rt, struct dn_fib_res *res)
 {
         struct dn_fib_info *fi = res->fi;
         struct net_device *dev = rt->dst.dev;
         struct neighbour *n;
-        unsigned mss;
+        unsigned int metric;
 
         if (fi) {
                 if (DN_FIB_RES_GW(*res) &&
                     DN_FIB_RES_NH(*res).nh_scope == RT_SCOPE_LINK)
                         rt->rt_gateway = DN_FIB_RES_GW(*res);
-                memcpy(rt->dst.metrics, fi->fib_metrics,
-                       sizeof(rt->dst.metrics));
+                dst_import_metrics(&rt->dst, fi->fib_metrics);
         }
         rt->rt_type = res->type;
 
@@ -811,13 +832,14 @@ static int dn_rt_set_next_hop(struct dn_route *rt, struct dn_fib_res *res)
                 rt->dst.neighbour = n;
         }
 
-        if (dst_metric(&rt->dst, RTAX_MTU) == 0 ||
-            dst_metric(&rt->dst, RTAX_MTU) > rt->dst.dev->mtu)
-                rt->dst.metrics[RTAX_MTU-1] = rt->dst.dev->mtu;
-        mss = dn_mss_from_pmtu(dev, dst_mtu(&rt->dst));
-        if (dst_metric(&rt->dst, RTAX_ADVMSS) == 0 ||
-            dst_metric(&rt->dst, RTAX_ADVMSS) > mss)
-                rt->dst.metrics[RTAX_ADVMSS-1] = mss;
+        if (dst_metric(&rt->dst, RTAX_MTU) > rt->dst.dev->mtu)
+                dst_metric_set(&rt->dst, RTAX_MTU, rt->dst.dev->mtu);
+        metric = dst_metric_raw(&rt->dst, RTAX_ADVMSS);
+        if (metric) {
+                unsigned int mss = dn_mss_from_pmtu(dev, dst_mtu(&rt->dst));
+                if (metric > mss)
+                        dst_metric_set(&rt->dst, RTAX_ADVMSS, mss);
+        }
         return 0;
 }
 
@@ -835,13 +857,16 @@ static inline int dn_match_addr(__le16 addr1, __le16 addr2)
 static __le16 dnet_select_source(const struct net_device *dev, __le16 daddr, int scope)
 {
         __le16 saddr = 0;
-        struct dn_dev *dn_db = dev->dn_ptr;
+        struct dn_dev *dn_db;
         struct dn_ifaddr *ifa;
         int best_match = 0;
         int ret;
 
-        read_lock(&dev_base_lock);
-        for(ifa = dn_db->ifa_list; ifa; ifa = ifa->ifa_next) {
+        rcu_read_lock();
+        dn_db = rcu_dereference(dev->dn_ptr);
+        for (ifa = rcu_dereference(dn_db->ifa_list);
+             ifa != NULL;
+             ifa = rcu_dereference(ifa->ifa_next)) {
                 if (ifa->ifa_scope > scope)
                         continue;
                 if (!daddr) {
@@ -854,7 +879,7 @@ static __le16 dnet_select_source(const struct net_device *dev, __le16 daddr, int
                 if (best_match == 0)
                         saddr = ifa->ifa_local;
         }
-        read_unlock(&dev_base_lock);
+        rcu_read_unlock();
 
         return saddr;
 }
@@ -872,11 +897,9 @@ static inline __le16 dn_fib_rules_map_destination(__le16 daddr, struct dn_fib_re
 
 static int dn_route_output_slow(struct dst_entry **pprt, const struct flowi *oldflp, int try_hard)
 {
-        struct flowi fl = { .nl_u = { .dn_u =
-                                      { .daddr = oldflp->fld_dst,
-                                        .saddr = oldflp->fld_src,
-                                        .scope = RT_SCOPE_UNIVERSE,
-                                     } },
+        struct flowi fl = { .fld_dst = oldflp->fld_dst,
+                            .fld_src = oldflp->fld_src,
+                            .fld_scope = RT_SCOPE_UNIVERSE,
                             .mark = oldflp->mark,
                             .iif = init_net.loopback_dev->ifindex,
                             .oif = oldflp->oif };
@@ -1020,7 +1043,7 @@ source_ok:
                 err = -ENODEV;
                 if (dev_out == NULL)
                         goto out;
-                dn_db = dev_out->dn_ptr;
+                dn_db = rcu_dereference_raw(dev_out->dn_ptr);
                 /* Possible improvement - check all devices for local addr */
                 if (dn_dev_islocal(dev_out, fl.fld_dst)) {
                         dev_put(dev_out);
@@ -1171,7 +1194,7 @@ static int __dn_route_output_key(struct dst_entry **pprt, const struct flowi *fl
                         if ((flp->fld_dst == rt->fl.fld_dst) &&
                             (flp->fld_src == rt->fl.fld_src) &&
                             (flp->mark == rt->fl.mark) &&
-                            (rt->fl.iif == 0) &&
+                            dn_is_output_route(rt) &&
                             (rt->fl.oif == flp->oif)) {
                                 dst_use(&rt->dst, jiffies);
                                 rcu_read_unlock_bh();
@@ -1220,11 +1243,9 @@ static int dn_route_input_slow(struct sk_buff *skb)
         int flags = 0;
         __le16 gateway = 0;
         __le16 local_src = 0;
-        struct flowi fl = { .nl_u = { .dn_u =
-                                     { .daddr = cb->dst,
-                                       .saddr = cb->src,
-                                       .scope = RT_SCOPE_UNIVERSE,
-                                    } },
+        struct flowi fl = { .fld_dst = cb->dst,
+                            .fld_src = cb->src,
+                            .fld_scope = RT_SCOPE_UNIVERSE,
                             .mark = skb->mark,
                             .iif = skb->dev->ifindex };
         struct dn_fib_res res = { .fi = NULL, .type = RTN_UNREACHABLE };
@@ -1233,7 +1254,7 @@ static int dn_route_input_slow(struct sk_buff *skb)
 
         dev_hold(in_dev);
 
-        if ((dn_db = in_dev->dn_ptr) == NULL)
+        if ((dn_db = rcu_dereference(in_dev->dn_ptr)) == NULL)
                 goto out;
 
         /* Zero source addresses are not allowed */
@@ -1496,13 +1517,13 @@ static int dn_rt_fill_info(struct sk_buff *skb, u32 pid, u32 seq,
         RTA_PUT(skb, RTA_PREFSRC, 2, &rt->rt_local_src);
         if (rt->rt_daddr != rt->rt_gateway)
                 RTA_PUT(skb, RTA_GATEWAY, 2, &rt->rt_gateway);
-        if (rtnetlink_put_metrics(skb, rt->dst.metrics) < 0)
+        if (rtnetlink_put_metrics(skb, dst_metrics_ptr(&rt->dst)) < 0)
                 goto rtattr_failure;
         expires = rt->dst.expires ? rt->dst.expires - jiffies : 0;
         if (rtnl_put_cacheinfo(skb, &rt->dst, 0, 0, 0, expires,
                                rt->dst.error) < 0)
                 goto rtattr_failure;
-        if (rt->fl.iif)
+        if (dn_is_input_route(rt))
                 RTA_PUT(skb, RTA_IIF, sizeof(int), &rt->fl.iif);
 
         nlh->nlmsg_len = skb_tail_pointer(skb) - b;
@@ -1677,15 +1698,15 @@ static struct dn_route *dn_rt_cache_get_next(struct seq_file *seq, struct dn_rou
 {
         struct dn_rt_cache_iter_state *s = seq->private;
 
-        rt = rt->dst.dn_next;
-        while(!rt) {
+        rt = rcu_dereference_bh(rt->dst.dn_next);
+        while (!rt) {
                 rcu_read_unlock_bh();
                 if (--s->bucket < 0)
                         break;
                 rcu_read_lock_bh();
-                rt = dn_rt_hash_table[s->bucket].chain;
+                rt = rcu_dereference_bh(dn_rt_hash_table[s->bucket].chain);
         }
-        return rcu_dereference_bh(rt);
+        return rt;
 }
 
 static void *dn_rt_cache_seq_start(struct seq_file *seq, loff_t *pos)
diff --git a/net/decnet/dn_rules.c b/net/decnet/dn_rules.c
index 48fdf10be7a1..6eb91df3c550 100644
--- a/net/decnet/dn_rules.c
+++ b/net/decnet/dn_rules.c
@@ -175,7 +175,7 @@ static int dn_fib_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh,
 
 unsigned dnet_addr_type(__le16 addr)
 {
-        struct flowi fl = { .nl_u = { .dn_u = { .daddr = addr } } };
+        struct flowi fl = { .fld_dst = addr };
         struct dn_fib_res res;
         unsigned ret = RTN_UNICAST;
         struct dn_fib_table *tb = dn_fib_get_table(RT_TABLE_LOCAL, 0);
diff --git a/net/dns_resolver/Makefile b/net/dns_resolver/Makefile
index c0ef4e71dc49..d5c13c2eb36d 100644
--- a/net/dns_resolver/Makefile
+++ b/net/dns_resolver/Makefile
@@ -4,4 +4,4 @@
 
 obj-$(CONFIG_DNS_RESOLVER) += dns_resolver.o
 
-dns_resolver-objs :=  dns_key.o dns_query.o
+dns_resolver-y :=  dns_key.o dns_query.o
diff --git a/net/econet/Makefile b/net/econet/Makefile
index 39f0a77abdbd..05fae8be2fed 100644
--- a/net/econet/Makefile
+++ b/net/econet/Makefile
@@ -4,4 +4,4 @@
 
 obj-$(CONFIG_ECONET) += econet.o
 
-econet-objs := af_econet.o
+econet-y := af_econet.o
diff --git a/net/ieee802154/af_ieee802154.c b/net/ieee802154/af_ieee802154.c
index 93c91b633a56..6df6ecf49708 100644
--- a/net/ieee802154/af_ieee802154.c
+++ b/net/ieee802154/af_ieee802154.c
@@ -52,11 +52,11 @@ struct net_device *ieee802154_get_dev(struct net *net,
 
         switch (addr->addr_type) {
         case IEEE802154_ADDR_LONG:
-                rtnl_lock();
-                dev = dev_getbyhwaddr(net, ARPHRD_IEEE802154, addr->hwaddr);
+                rcu_read_lock();
+                dev = dev_getbyhwaddr_rcu(net, ARPHRD_IEEE802154, addr->hwaddr);
                 if (dev)
                         dev_hold(dev);
-                rtnl_unlock();
+                rcu_read_unlock();
                 break;
         case IEEE802154_ADDR_SHORT:
                 if (addr->pan_id == 0xffff ||
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index f581f77d1097..f2b61107df6c 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1148,21 +1148,13 @@ int inet_sk_rebuild_header(struct sock *sk)
         struct flowi fl = {
                 .oif = sk->sk_bound_dev_if,
                 .mark = sk->sk_mark,
-                .nl_u = {
-                        .ip4_u = {
-                                .daddr  = daddr,
-                                .saddr  = inet->inet_saddr,
-                                .tos    = RT_CONN_FLAGS(sk),
-                        },
-                },
+                .fl4_dst = daddr,
+                .fl4_src = inet->inet_saddr,
+                .fl4_tos = RT_CONN_FLAGS(sk),
                 .proto = sk->sk_protocol,
                 .flags = inet_sk_flowi_flags(sk),
-                .uli_u = {
-                        .ports = {
-                                .sport = inet->inet_sport,
-                                .dport = inet->inet_dport,
-                        },
-                },
+                .fl_ip_sport = inet->inet_sport,
+                .fl_ip_dport = inet->inet_dport,
         };
 
         security_sk_classify_flow(sk, &fl);
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index d8e540c5b071..a2fc7b961dbc 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -433,8 +433,8 @@ static int arp_ignore(struct in_device *in_dev, __be32 sip, __be32 tip)
 
 static int arp_filter(__be32 sip, __be32 tip, struct net_device *dev)
 {
-        struct flowi fl = { .nl_u = { .ip4_u = { .daddr = sip,
-                                                 .saddr = tip } } };
+        struct flowi fl = { .fl4_dst = sip,
+                            .fl4_src = tip };
         struct rtable *rt;
         int flag = 0;
         /*unsigned long now; */
@@ -883,7 +883,7 @@ static int arp_process(struct sk_buff *skb)
 
                         dont_send = arp_ignore(in_dev, sip, tip);
                         if (!dont_send && IN_DEV_ARPFILTER(in_dev))
-                                dont_send |= arp_filter(sip, tip, dev);
+                                dont_send = arp_filter(sip, tip, dev);
                         if (!dont_send) {
                                 n = neigh_event_ns(&arp_tbl, sha, &sip, dev);
                                 if (n) {
@@ -1017,13 +1017,14 @@ static int arp_req_set_proxy(struct net *net, struct net_device *dev, int on)
                 IPV4_DEVCONF_ALL(net, PROXY_ARP) = on;
                 return 0;
         }
-        if (__in_dev_get_rtnl(dev)) {
-                IN_DEV_CONF_SET(__in_dev_get_rtnl(dev), PROXY_ARP, on);
+        if (__in_dev_get_rcu(dev)) {
+                IN_DEV_CONF_SET(__in_dev_get_rcu(dev), PROXY_ARP, on);
                 return 0;
         }
         return -ENXIO;
 }
 
+/* must be called with rcu_read_lock() */
 static int arp_req_set_public(struct net *net, struct arpreq *r,
                 struct net_device *dev)
 {
@@ -1033,7 +1034,7 @@ static int arp_req_set_public(struct net *net, struct arpreq *r,
         if (mask && mask != htonl(0xFFFFFFFF))
                 return -EINVAL;
         if (!dev && (r->arp_flags & ATF_COM)) {
-                dev = dev_getbyhwaddr(net, r->arp_ha.sa_family,
+                dev = dev_getbyhwaddr_rcu(net, r->arp_ha.sa_family,
                                       r->arp_ha.sa_data);
                 if (!dev)
                         return -ENODEV;
@@ -1061,8 +1062,8 @@ static int arp_req_set(struct net *net, struct arpreq *r,
         if (r->arp_flags & ATF_PERM)
                 r->arp_flags |= ATF_COM;
         if (dev == NULL) {
-                struct flowi fl = { .nl_u.ip4_u = { .daddr = ip,
-                                                    .tos = RTO_ONLINK } };
+                struct flowi fl = { .fl4_dst = ip,
+                                    .fl4_tos = RTO_ONLINK };
                 struct rtable *rt;
                 err = ip_route_output_key(net, &rt, &fl);
                 if (err != 0)
@@ -1169,8 +1170,8 @@ static int arp_req_delete(struct net *net, struct arpreq *r,
 
         ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr;
         if (dev == NULL) {
-                struct flowi fl = { .nl_u.ip4_u = { .daddr = ip,
-                                                    .tos = RTO_ONLINK } };
+                struct flowi fl = { .fl4_dst = ip,
+                                    .fl4_tos = RTO_ONLINK };
                 struct rtable *rt;
                 err = ip_route_output_key(net, &rt, &fl);
                 if (err != 0)
@@ -1225,10 +1226,10 @@ int arp_ioctl(struct net *net, unsigned int cmd, void __user *arg)
         if (!(r.arp_flags & ATF_NETMASK))
                 ((struct sockaddr_in *)&r.arp_netmask)->sin_addr.s_addr =
                                                            htonl(0xFFFFFFFFUL);
-        rtnl_lock();
+        rcu_read_lock();
         if (r.arp_dev[0]) {
                 err = -ENODEV;
-                dev = __dev_get_by_name(net, r.arp_dev);
+                dev = dev_get_by_name_rcu(net, r.arp_dev);
                 if (dev == NULL)
                         goto out;
 
@@ -1252,12 +1253,12 @@ int arp_ioctl(struct net *net, unsigned int cmd, void __user *arg)
                 break;
         case SIOCGARP:
                 err = arp_req_get(&r, dev);
-                if (!err && copy_to_user(arg, &r, sizeof(r)))
-                        err = -EFAULT;
                 break;
         }
 out:
-        rtnl_unlock();
+        rcu_read_unlock();
+        if (cmd == SIOCGARP && !err && copy_to_user(arg, &r, sizeof(r)))
+                err = -EFAULT;
         return err;
 }
 
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index dc94b0316b78..748cb5b337bd 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1256,6 +1256,87 @@ errout:
                 rtnl_set_sk_err(net, RTNLGRP_IPV4_IFADDR, err);
 }
 
+static size_t inet_get_link_af_size(const struct net_device *dev)
+{
+        struct in_device *in_dev = __in_dev_get_rtnl(dev);
+
+        if (!in_dev)
+                return 0;
+
+        return nla_total_size(IPV4_DEVCONF_MAX * 4); /* IFLA_INET_CONF */
+}
+
+static int inet_fill_link_af(struct sk_buff *skb, const struct net_device *dev)
+{
+        struct in_device *in_dev = __in_dev_get_rtnl(dev);
+        struct nlattr *nla;
+        int i;
+
+        if (!in_dev)
+                return -ENODATA;
+
+        nla = nla_reserve(skb, IFLA_INET_CONF, IPV4_DEVCONF_MAX * 4);
+        if (nla == NULL)
+                return -EMSGSIZE;
+
+        for (i = 0; i < IPV4_DEVCONF_MAX; i++)
+                ((u32 *) nla_data(nla))[i] = in_dev->cnf.data[i];
+
+        return 0;
+}
+
+static const struct nla_policy inet_af_policy[IFLA_INET_MAX+1] = {
+        [IFLA_INET_CONF]        = { .type = NLA_NESTED },
+};
+
+static int inet_validate_link_af(const struct net_device *dev,
+                                 const struct nlattr *nla)
+{
+        struct nlattr *a, *tb[IFLA_INET_MAX+1];
+        int err, rem;
+
+        if (dev && !__in_dev_get_rtnl(dev))
+                return -EAFNOSUPPORT;
+
+        err = nla_parse_nested(tb, IFLA_INET_MAX, nla, inet_af_policy);
+        if (err < 0)
+                return err;
+
+        if (tb[IFLA_INET_CONF]) {
+                nla_for_each_nested(a, tb[IFLA_INET_CONF], rem) {
+                        int cfgid = nla_type(a);
+
+                        if (nla_len(a) < 4)
+                                return -EINVAL;
+
+                        if (cfgid <= 0 || cfgid > IPV4_DEVCONF_MAX)
+                                return -EINVAL;
+                }
+        }
+
+        return 0;
+}
+
+static int inet_set_link_af(struct net_device *dev, const struct nlattr *nla)
+{
+        struct in_device *in_dev = __in_dev_get_rtnl(dev);
+        struct nlattr *a, *tb[IFLA_INET_MAX+1];
+        int rem;
+
+        if (!in_dev)
+                return -EAFNOSUPPORT;
+
+        if (nla_parse_nested(tb, IFLA_INET_MAX, nla, NULL) < 0)
+                BUG();
+
+        if (tb[IFLA_INET_CONF]) {
+                nla_for_each_nested(a, tb[IFLA_INET_CONF], rem)
+                        ipv4_devconf_set(in_dev, nla_type(a), nla_get_u32(a));
+        }
+
+        return 0;
+}
+
 #ifdef CONFIG_SYSCTL
 
 static void devinet_copy_dflt_conf(struct net *net, int i)
@@ -1349,9 +1430,9 @@ static int devinet_sysctl_forward(ctl_table *ctl, int write,
         return ret;
 }
 
-int ipv4_doint_and_flush(ctl_table *ctl, int write,
-                         void __user *buffer,
-                         size_t *lenp, loff_t *ppos)
+static int ipv4_doint_and_flush(ctl_table *ctl, int write,
+                                void __user *buffer,
+                                size_t *lenp, loff_t *ppos)
 {
         int *valp = ctl->data;
         int val = *valp;
@@ -1619,6 +1700,14 @@ static __net_initdata struct pernet_operations devinet_ops = {
         .exit = devinet_exit_net,
 };
 
+static struct rtnl_af_ops inet_af_ops = {
+        .family           = AF_INET,
+        .fill_link_af     = inet_fill_link_af,
+        .get_link_af_size = inet_get_link_af_size,
+        .validate_link_af = inet_validate_link_af,
+        .set_link_af      = inet_set_link_af,
+};
+
 void __init devinet_init(void)
 {
         register_pernet_subsys(&devinet_ops);
@@ -1626,6 +1715,8 @@ void __init devinet_init(void)
         register_gifconf(PF_INET, inet_gifconf);
         register_netdevice_notifier(&ip_netdev_notifier);
 
+        rtnl_af_register(&inet_af_ops);
+
         rtnl_register(PF_INET, RTM_NEWADDR, inet_rtm_newaddr, NULL);
         rtnl_register(PF_INET, RTM_DELADDR, inet_rtm_deladdr, NULL);
         rtnl_register(PF_INET, RTM_GETADDR, NULL, inet_dump_ifaddr);
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index 14ca1f1c3fb0..e42a905180f0 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -23,6 +23,8 @@ struct esp_skb_cb {
 
 #define ESP_SKB_CB(__skb) ((struct esp_skb_cb *)&((__skb)->cb[0]))
 
+static u32 esp4_get_mtu(struct xfrm_state *x, int mtu);
+
 /*
  * Allocate an AEAD request structure with extra space for SG and IV.
  *
@@ -117,25 +119,35 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
         int blksize;
         int clen;
         int alen;
+        int plen;
+        int tfclen;
         int nfrags;
 
         /* skb is pure payload to encrypt */
 
         err = -ENOMEM;
 
-        /* Round to block size */
-        clen = skb->len;
-
         esp = x->data;
         aead = esp->aead;
         alen = crypto_aead_authsize(aead);
 
+        tfclen = 0;
+        if (x->tfcpad) {
+                struct xfrm_dst *dst = (struct xfrm_dst *)skb_dst(skb);
+                u32 padto;
+
+                padto = min(x->tfcpad, esp4_get_mtu(x, dst->child_mtu_cached));
+                if (skb->len < padto)
+                        tfclen = padto - skb->len;
+        }
         blksize = ALIGN(crypto_aead_blocksize(aead), 4);
-        clen = ALIGN(clen + 2, blksize);
+        clen = ALIGN(skb->len + 2 + tfclen, blksize);
         if (esp->padlen)
                 clen = ALIGN(clen, esp->padlen);
+        plen = clen - skb->len - tfclen;
 
-        if ((err = skb_cow_data(skb, clen - skb->len + alen, &trailer)) < 0)
+        err = skb_cow_data(skb, tfclen + plen + alen, &trailer);
+        if (err < 0)
                 goto error;
         nfrags = err;
 
@@ -150,13 +162,17 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
 
         /* Fill padding... */
         tail = skb_tail_pointer(trailer);
+        if (tfclen) {
+                memset(tail, 0, tfclen);
+                tail += tfclen;
+        }
         do {
                 int i;
-                for (i=0; i<clen-skb->len - 2; i++)
+                for (i = 0; i < plen - 2; i++)
                         tail[i] = i + 1;
         } while (0);
-        tail[clen - skb->len - 2] = (clen - skb->len) - 2;
-        tail[clen - skb->len - 1] = *skb_mac_header(skb);
+        tail[plen - 2] = plen - 2;
+        tail[plen - 1] = *skb_mac_header(skb);
         pskb_put(skb, trailer, clen - skb->len + alen);
 
         skb_push(skb, -skb_network_offset(skb));
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index eb6f69a8f27a..d3a1112b9d9c 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -158,11 +158,7 @@ static void fib_flush(struct net *net)
 struct net_device *__ip_dev_find(struct net *net, __be32 addr, bool devref)
 {
         struct flowi fl = {
-                .nl_u = {
-                        .ip4_u = {
-                                .daddr = addr
-                        }
-                },
+                .fl4_dst = addr,
                 .flags = FLOWI_FLAG_MATCH_ANY_IIF
         };
         struct fib_result res = { 0 };
@@ -193,7 +189,7 @@ static inline unsigned __inet_dev_addr_type(struct net *net,
                                             const struct net_device *dev,
                                             __be32 addr)
 {
-        struct flowi            fl = { .nl_u = { .ip4_u = { .daddr = addr } } };
+        struct flowi            fl = { .fl4_dst = addr };
         struct fib_result       res;
         unsigned ret = RTN_BROADCAST;
         struct fib_table *local_table;
@@ -247,13 +243,9 @@ int fib_validate_source(__be32 src, __be32 dst, u8 tos, int oif,
 {
         struct in_device *in_dev;
         struct flowi fl = {
-                .nl_u = {
-                        .ip4_u = {
-                                .daddr = src,
-                                .saddr = dst,
-                                .tos = tos
-                        }
-                },
+                .fl4_dst = src,
+                .fl4_src = dst,
+                .fl4_tos = tos,
                 .mark = mark,
                 .iif = oif
         };
@@ -853,13 +845,9 @@ static void nl_fib_lookup(struct fib_result_nl *frn, struct fib_table *tb)
         struct fib_result       res;
         struct flowi            fl = {
                 .mark = frn->fl_mark,
-                .nl_u = {
-                        .ip4_u = {
-                                .daddr = frn->fl_addr,
-                                .tos = frn->fl_tos,
-                                .scope = frn->fl_scope
-                        }
-                }
+                .fl4_dst = frn->fl_addr,
+                .fl4_tos = frn->fl_tos,
+                .fl4_scope = frn->fl_scope,
         };
 
 #ifdef CONFIG_IP_MULTIPLE_TABLES
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 3e0da3ef6116..12d3dc3df1b7 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -563,12 +563,8 @@ static int fib_check_nh(struct fib_config *cfg, struct fib_info *fi,
                 rcu_read_lock();
                 {
                         struct flowi fl = {
-                                .nl_u = {
-                                        .ip4_u = {
-                                                .daddr = nh->nh_gw,
-                                                .scope = cfg->fc_scope + 1,
-                                        },
-                                },
+                                .fl4_dst = nh->nh_gw,
+                                .fl4_scope = cfg->fc_scope + 1,
                                 .oif = nh->nh_oif,
                         };
 
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index e5d1a44bcbdf..4aa1b7f01ea0 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -386,10 +386,9 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
                         daddr = icmp_param->replyopts.faddr;
         }
         {
-                struct flowi fl = { .nl_u = { .ip4_u =
-                                              { .daddr = daddr,
-                                                .saddr = rt->rt_spec_dst,
-                                                .tos = RT_TOS(ip_hdr(skb)->tos) } },
+                struct flowi fl = { .fl4_dst= daddr,
+                                    .fl4_src = rt->rt_spec_dst,
+                                    .fl4_tos = RT_TOS(ip_hdr(skb)->tos),
                                     .proto = IPPROTO_ICMP };
                 security_skb_classify_flow(skb, &fl);
                 if (ip_route_output_key(net, &rt, &fl))
@@ -506,8 +505,8 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
                 struct net_device *dev = NULL;
 
                 rcu_read_lock();
-                if (rt->fl.iif &&
-                        net->ipv4.sysctl_icmp_errors_use_inbound_ifaddr)
+                if (rt_is_input_route(rt) &&
+                    net->ipv4.sysctl_icmp_errors_use_inbound_ifaddr)
                         dev = dev_get_by_index_rcu(net, rt->fl.iif);
 
                 if (dev)
@@ -542,22 +541,13 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
 
         {
                 struct flowi fl = {
-                        .nl_u = {
-                                .ip4_u = {
-                                        .daddr = icmp_param.replyopts.srr ?
-                                                icmp_param.replyopts.faddr :
-                                                iph->saddr,
-                                        .saddr = saddr,
-                                        .tos = RT_TOS(tos)
-                                }
-                        },
+                        .fl4_dst = icmp_param.replyopts.srr ?
+                                   icmp_param.replyopts.faddr : iph->saddr,
+                        .fl4_src = saddr,
+                        .fl4_tos = RT_TOS(tos),
                         .proto = IPPROTO_ICMP,
-                        .uli_u = {
-                                .icmpt = {
-                                        .type = type,
-                                        .code = code
-                                }
-                        }
+                        .fl_icmp_type = type,
+                        .fl_icmp_code = code,
                 };
                 int err;
                 struct rtable *rt2;
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 3c53c2d89e3b..e0e77e297de3 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -149,21 +149,37 @@ static void ip_mc_clear_src(struct ip_mc_list *pmc);
 static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode,
                          int sfcount, __be32 *psfsrc, int delta);
 
+
+static void ip_mc_list_reclaim(struct rcu_head *head)
+{
+        kfree(container_of(head, struct ip_mc_list, rcu));
+}
+
 static void ip_ma_put(struct ip_mc_list *im)
 {
         if (atomic_dec_and_test(&im->refcnt)) {
                 in_dev_put(im->interface);
-                kfree(im);
+                call_rcu(&im->rcu, ip_mc_list_reclaim);
         }
 }
 
+#define for_each_pmc_rcu(in_dev, pmc)                           \
+        for (pmc = rcu_dereference(in_dev->mc_list);            \
+             pmc != NULL;                                       \
+             pmc = rcu_dereference(pmc->next_rcu))
+
+#define for_each_pmc_rtnl(in_dev, pmc)                          \
+        for (pmc = rtnl_dereference(in_dev->mc_list);           \
+             pmc != NULL;                                       \
+             pmc = rtnl_dereference(pmc->next_rcu))
+
 #ifdef CONFIG_IP_MULTICAST
 
 /*
  *      Timer management
  */
 
-static __inline__ void igmp_stop_timer(struct ip_mc_list *im)
+static void igmp_stop_timer(struct ip_mc_list *im)
 {
         spin_lock_bh(&im->lock);
         if (del_timer(&im->timer))
@@ -284,6 +300,8 @@ igmp_scount(struct ip_mc_list *pmc, int type, int gdeleted, int sdeleted)
         return scount;
 }
 
+#define igmp_skb_size(skb) (*(unsigned int *)((skb)->cb))
+
 static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size)
 {
         struct sk_buff *skb;
@@ -292,14 +310,20 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size)
         struct igmpv3_report *pig;
         struct net *net = dev_net(dev);
 
-        skb = alloc_skb(size + LL_ALLOCATED_SPACE(dev), GFP_ATOMIC);
-        if (skb == NULL)
-                return NULL;
+        while (1) {
+                skb = alloc_skb(size + LL_ALLOCATED_SPACE(dev),
+                                GFP_ATOMIC | __GFP_NOWARN);
+                if (skb)
+                        break;
+                size >>= 1;
+                if (size < 256)
+                        return NULL;
+        }
+        igmp_skb_size(skb) = size;
 
         {
                 struct flowi fl = { .oif = dev->ifindex,
-                                    .nl_u = { .ip4_u = {
-                                    .daddr = IGMPV3_ALL_MCR } },
+                                    .fl4_dst = IGMPV3_ALL_MCR,
                                     .proto = IPPROTO_IGMP };
                 if (ip_route_output_key(net, &rt, &fl)) {
                         kfree_skb(skb);
@@ -384,7 +408,7 @@ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ip_mc_list *pmc,
         return skb;
 }
 
-#define AVAILABLE(skb) ((skb) ? ((skb)->dev ? (skb)->dev->mtu - (skb)->len : \
+#define AVAILABLE(skb) ((skb) ? ((skb)->dev ? igmp_skb_size(skb) - (skb)->len : \
         skb_tailroom(skb)) : 0)
 
 static struct sk_buff *add_grec(struct sk_buff *skb, struct ip_mc_list *pmc,
@@ -502,8 +526,8 @@ static int igmpv3_send_report(struct in_device *in_dev, struct ip_mc_list *pmc)
         int type;
 
         if (!pmc) {
-                read_lock(&in_dev->mc_list_lock);
-                for (pmc=in_dev->mc_list; pmc; pmc=pmc->next) {
+                rcu_read_lock();
+                for_each_pmc_rcu(in_dev, pmc) {
                         if (pmc->multiaddr == IGMP_ALL_HOSTS)
                                 continue;
                         spin_lock_bh(&pmc->lock);
@@ -514,7 +538,7 @@ static int igmpv3_send_report(struct in_device *in_dev, struct ip_mc_list *pmc)
                         skb = add_grec(skb, pmc, type, 0, 0);
                         spin_unlock_bh(&pmc->lock);
                 }
-                read_unlock(&in_dev->mc_list_lock);
+                rcu_read_unlock();
         } else {
                 spin_lock_bh(&pmc->lock);
                 if (pmc->sfcount[MCAST_EXCLUDE])
@@ -556,7 +580,7 @@ static void igmpv3_send_cr(struct in_device *in_dev)
         struct sk_buff *skb = NULL;
         int type, dtype;
 
-        read_lock(&in_dev->mc_list_lock);
+        rcu_read_lock();
         spin_lock_bh(&in_dev->mc_tomb_lock);
 
         /* deleted MCA's */
@@ -593,7 +617,7 @@ static void igmpv3_send_cr(struct in_device *in_dev)
         spin_unlock_bh(&in_dev->mc_tomb_lock);
 
         /* change recs */
-        for (pmc=in_dev->mc_list; pmc; pmc=pmc->next) {
+        for_each_pmc_rcu(in_dev, pmc) {
                 spin_lock_bh(&pmc->lock);
                 if (pmc->sfcount[MCAST_EXCLUDE]) {
                         type = IGMPV3_BLOCK_OLD_SOURCES;
@@ -616,7 +640,7 @@ static void igmpv3_send_cr(struct in_device *in_dev)
                 }
                 spin_unlock_bh(&pmc->lock);
         }
-        read_unlock(&in_dev->mc_list_lock);
+        rcu_read_unlock();
 
         if (!skb)
                 return;
@@ -644,7 +668,7 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc,
 
         {
                 struct flowi fl = { .oif = dev->ifindex,
-                                    .nl_u = { .ip4_u = { .daddr = dst } },
+                                    .fl4_dst = dst,
                                     .proto = IPPROTO_IGMP };
                 if (ip_route_output_key(net, &rt, &fl))
                         return -1;
@@ -813,14 +837,14 @@ static void igmp_heard_report(struct in_device *in_dev, __be32 group)
         if (group == IGMP_ALL_HOSTS)
                 return;
 
-        read_lock(&in_dev->mc_list_lock);
-        for (im=in_dev->mc_list; im!=NULL; im=im->next) {
+        rcu_read_lock();
+        for_each_pmc_rcu(in_dev, im) {
                 if (im->multiaddr == group) {
                         igmp_stop_timer(im);
                         break;
                 }
         }
-        read_unlock(&in_dev->mc_list_lock);
+        rcu_read_unlock();
 }
 
 static void igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb,
@@ -906,8 +930,8 @@ static void igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb,
          * - Use the igmp->igmp_code field as the maximum
          *   delay possible
          */
-        read_lock(&in_dev->mc_list_lock);
-        for (im=in_dev->mc_list; im!=NULL; im=im->next) {
+        rcu_read_lock();
+        for_each_pmc_rcu(in_dev, im) {
                 int changed;
 
                 if (group && group != im->multiaddr)
@@ -925,7 +949,7 @@ static void igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb,
                 if (changed)
                         igmp_mod_timer(im, max_delay);
         }
-        read_unlock(&in_dev->mc_list_lock);
+        rcu_read_unlock();
 }
 
 /* called in rcu_read_lock() section */
@@ -961,7 +985,7 @@ int igmp_rcv(struct sk_buff *skb)
         case IGMP_HOST_MEMBERSHIP_REPORT:
         case IGMPV2_HOST_MEMBERSHIP_REPORT:
                 /* Is it our report looped back? */
-                if (skb_rtable(skb)->fl.iif == 0)
+                if (rt_is_output_route(skb_rtable(skb)))
                         break;
                 /* don't rely on MC router hearing unicast reports */
                 if (skb->pkt_type == PACKET_MULTICAST ||
@@ -1110,8 +1134,8 @@ static void igmpv3_clear_delrec(struct in_device *in_dev)
                 kfree(pmc);
         }
         /* clear dead sources, too */
-        read_lock(&in_dev->mc_list_lock);
-        for (pmc=in_dev->mc_list; pmc; pmc=pmc->next) {
+        rcu_read_lock();
+        for_each_pmc_rcu(in_dev, pmc) {
                 struct ip_sf_list *psf, *psf_next;
 
                 spin_lock_bh(&pmc->lock);
@@ -1123,7 +1147,7 @@ static void igmpv3_clear_delrec(struct in_device *in_dev)
                         kfree(psf);
                 }
         }
-        read_unlock(&in_dev->mc_list_lock);
+        rcu_read_unlock();
 }
 #endif
 
@@ -1209,7 +1233,7 @@ void ip_mc_inc_group(struct in_device *in_dev, __be32 addr)
 
         ASSERT_RTNL();
 
-        for (im=in_dev->mc_list; im; im=im->next) {
+        for_each_pmc_rtnl(in_dev, im) {
                 if (im->multiaddr == addr) {
                         im->users++;
                         ip_mc_add_src(in_dev, &addr, MCAST_EXCLUDE, 0, NULL, 0);
@@ -1217,7 +1241,7 @@ void ip_mc_inc_group(struct in_device *in_dev, __be32 addr)
                 }
         }
 
-        im = kmalloc(sizeof(*im), GFP_KERNEL);
+        im = kzalloc(sizeof(*im), GFP_KERNEL);
         if (!im)
                 goto out;
 
@@ -1227,26 +1251,18 @@ void ip_mc_inc_group(struct in_device *in_dev, __be32 addr)
         im->multiaddr = addr;
         /* initial mode is (EX, empty) */
         im->sfmode = MCAST_EXCLUDE;
-        im->sfcount[MCAST_INCLUDE] = 0;
         im->sfcount[MCAST_EXCLUDE] = 1;
-        im->sources = NULL;
-        im->tomb = NULL;
-        im->crcount = 0;
         atomic_set(&im->refcnt, 1);
         spin_lock_init(&im->lock);
 #ifdef CONFIG_IP_MULTICAST
-        im->tm_running = 0;
         setup_timer(&im->timer, &igmp_timer_expire, (unsigned long)im);
         im->unsolicit_count = IGMP_Unsolicited_Report_Count;
-        im->reporter = 0;
-        im->gsquery = 0;
 #endif
-        im->loaded = 0;
-        write_lock_bh(&in_dev->mc_list_lock);
-        im->next = in_dev->mc_list;
-        in_dev->mc_list = im;
+
+        im->next_rcu = in_dev->mc_list;
         in_dev->mc_count++;
-        write_unlock_bh(&in_dev->mc_list_lock);
+        rcu_assign_pointer(in_dev->mc_list, im);
+
 #ifdef CONFIG_IP_MULTICAST
         igmpv3_del_delrec(in_dev, im->multiaddr);
 #endif
@@ -1260,26 +1276,32 @@ EXPORT_SYMBOL(ip_mc_inc_group);
 
 /*
  *      Resend IGMP JOIN report; used for bonding.
+ *      Called with rcu_read_lock()
  */
-void ip_mc_rejoin_group(struct ip_mc_list *im)
+void ip_mc_rejoin_groups(struct in_device *in_dev)
 {
 #ifdef CONFIG_IP_MULTICAST
-        struct in_device *in_dev = im->interface;
+        struct ip_mc_list *im;
+        int type;
 
-        if (im->multiaddr == IGMP_ALL_HOSTS)
-                return;
+        for_each_pmc_rcu(in_dev, im) {
+                if (im->multiaddr == IGMP_ALL_HOSTS)
+                        continue;
 
-        /* a failover is happening and switches
-         * must be notified immediately */
-        if (IGMP_V1_SEEN(in_dev))
-                igmp_send_report(in_dev, im, IGMP_HOST_MEMBERSHIP_REPORT);
-        else if (IGMP_V2_SEEN(in_dev))
-                igmp_send_report(in_dev, im, IGMPV2_HOST_MEMBERSHIP_REPORT);
-        else
-                igmp_send_report(in_dev, im, IGMPV3_HOST_MEMBERSHIP_REPORT);
+                /* a failover is happening and switches
+                 * must be notified immediately
+                 */
+                if (IGMP_V1_SEEN(in_dev))
+                        type = IGMP_HOST_MEMBERSHIP_REPORT;
+                else if (IGMP_V2_SEEN(in_dev))
+                        type = IGMPV2_HOST_MEMBERSHIP_REPORT;
+                else
+                        type = IGMPV3_HOST_MEMBERSHIP_REPORT;
+                igmp_send_report(in_dev, im, type);
+        }
 #endif
 }
-EXPORT_SYMBOL(ip_mc_rejoin_group);
+EXPORT_SYMBOL(ip_mc_rejoin_groups);
 
 /*
  *      A socket has left a multicast group on device dev
@@ -1287,17 +1309,18 @@ EXPORT_SYMBOL(ip_mc_rejoin_group);
 
 void ip_mc_dec_group(struct in_device *in_dev, __be32 addr)
 {
-        struct ip_mc_list *i, **ip;
+        struct ip_mc_list *i;
+        struct ip_mc_list __rcu **ip;
 
         ASSERT_RTNL();
 
-        for (ip=&in_dev->mc_list; (i=*ip)!=NULL; ip=&i->next) {
+        for (ip = &in_dev->mc_list;
+             (i = rtnl_dereference(*ip)) != NULL;
+             ip = &i->next_rcu) {
                 if (i->multiaddr == addr) {
                         if (--i->users == 0) {
-                                write_lock_bh(&in_dev->mc_list_lock);
-                                *ip = i->next;
+                                *ip = i->next_rcu;
                                 in_dev->mc_count--;
-                                write_unlock_bh(&in_dev->mc_list_lock);
                                 igmp_group_dropped(i);
 
                                 if (!in_dev->dead)
@@ -1316,34 +1339,34 @@ EXPORT_SYMBOL(ip_mc_dec_group);
 
 void ip_mc_unmap(struct in_device *in_dev)
 {
-        struct ip_mc_list *i;
+        struct ip_mc_list *pmc;
 
         ASSERT_RTNL();
 
-        for (i = in_dev->mc_list; i; i = i->next)
-                igmp_group_dropped(i);
+        for_each_pmc_rtnl(in_dev, pmc)
+                igmp_group_dropped(pmc);
 }
 
 void ip_mc_remap(struct in_device *in_dev)
 {
-        struct ip_mc_list *i;
+        struct ip_mc_list *pmc;
 
         ASSERT_RTNL();
 
-        for (i = in_dev->mc_list; i; i = i->next)
-                igmp_group_added(i);
+        for_each_pmc_rtnl(in_dev, pmc)
+                igmp_group_added(pmc);
 }
 
 /* Device going down */
 
 void ip_mc_down(struct in_device *in_dev)
 {
-        struct ip_mc_list *i;
+        struct ip_mc_list *pmc;
 
         ASSERT_RTNL();
 
-        for (i=in_dev->mc_list; i; i=i->next)
-                igmp_group_dropped(i);
+        for_each_pmc_rtnl(in_dev, pmc)
+                igmp_group_dropped(pmc);
 
 #ifdef CONFIG_IP_MULTICAST
         in_dev->mr_ifc_count = 0;
@@ -1374,7 +1397,6 @@ void ip_mc_init_dev(struct in_device *in_dev)
         in_dev->mr_qrv = IGMP_Unsolicited_Report_Count;
 #endif
 
-        rwlock_init(&in_dev->mc_list_lock);
         spin_lock_init(&in_dev->mc_tomb_lock);
 }
 
@@ -1382,14 +1404,14 @@ void ip_mc_init_dev(struct in_device *in_dev)
 
 void ip_mc_up(struct in_device *in_dev)
 {
-        struct ip_mc_list *i;
+        struct ip_mc_list *pmc;
 
         ASSERT_RTNL();
 
         ip_mc_inc_group(in_dev, IGMP_ALL_HOSTS);
 
-        for (i=in_dev->mc_list; i; i=i->next)
-                igmp_group_added(i);
+        for_each_pmc_rtnl(in_dev, pmc)
+                igmp_group_added(pmc);
 }
 
 /*
@@ -1405,24 +1427,19 @@ void ip_mc_destroy_dev(struct in_device *in_dev)
         /* Deactivate timers */
         ip_mc_down(in_dev);
 
-        write_lock_bh(&in_dev->mc_list_lock);
-        while ((i = in_dev->mc_list) != NULL) {
-                in_dev->mc_list = i->next;
+        while ((i = rtnl_dereference(in_dev->mc_list)) != NULL) {
+                in_dev->mc_list = i->next_rcu;
                 in_dev->mc_count--;
-                write_unlock_bh(&in_dev->mc_list_lock);
+
                 igmp_group_dropped(i);
                 ip_ma_put(i);
-
-                write_lock_bh(&in_dev->mc_list_lock);
         }
-        write_unlock_bh(&in_dev->mc_list_lock);
 }
 
 /* RTNL is locked */
 static struct in_device *ip_mc_find_dev(struct net *net, struct ip_mreqn *imr)
 {
-        struct flowi fl = { .nl_u = { .ip4_u =
-                                      { .daddr = imr->imr_multiaddr.s_addr } } };
+        struct flowi fl = { .fl4_dst = imr->imr_multiaddr.s_addr };
         struct rtable *rt;
         struct net_device *dev = NULL;
         struct in_device *idev = NULL;
@@ -1513,18 +1530,18 @@ static int ip_mc_del_src(struct in_device *in_dev, __be32 *pmca, int sfmode,
 
         if (!in_dev)
                 return -ENODEV;
-        read_lock(&in_dev->mc_list_lock);
-        for (pmc=in_dev->mc_list; pmc; pmc=pmc->next) {
+        rcu_read_lock();
+        for_each_pmc_rcu(in_dev, pmc) {
                 if (*pmca == pmc->multiaddr)
                         break;
         }
         if (!pmc) {
                 /* MCA not found?? bug */
-                read_unlock(&in_dev->mc_list_lock);
+                rcu_read_unlock();
                 return -ESRCH;
         }
         spin_lock_bh(&pmc->lock);
-        read_unlock(&in_dev->mc_list_lock);
+        rcu_read_unlock();
 #ifdef CONFIG_IP_MULTICAST
         sf_markstate(pmc);
 #endif
@@ -1685,18 +1702,18 @@ static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode,
 
         if (!in_dev)
                 return -ENODEV;
-        read_lock(&in_dev->mc_list_lock);
-        for (pmc=in_dev->mc_list; pmc; pmc=pmc->next) {
+        rcu_read_lock();
+        for_each_pmc_rcu(in_dev, pmc) {
                 if (*pmca == pmc->multiaddr)
                         break;
         }
         if (!pmc) {
                 /* MCA not found?? bug */
-                read_unlock(&in_dev->mc_list_lock);
+                rcu_read_unlock();
                 return -ESRCH;
         }
         spin_lock_bh(&pmc->lock);
-        read_unlock(&in_dev->mc_list_lock);
+        rcu_read_unlock();
 
 #ifdef CONFIG_IP_MULTICAST
         sf_markstate(pmc);
@@ -1793,7 +1810,7 @@ int ip_mc_join_group(struct sock *sk , struct ip_mreqn *imr)
 
         err = -EADDRINUSE;
         ifindex = imr->imr_ifindex;
-        for (i = inet->mc_list; i; i = i->next) {
+        for_each_pmc_rtnl(inet, i) {
                 if (i->multi.imr_multiaddr.s_addr == addr &&
                     i->multi.imr_ifindex == ifindex)
                         goto done;
@@ -1807,7 +1824,7 @@ int ip_mc_join_group(struct sock *sk , struct ip_mreqn *imr)
                 goto done;
 
         memcpy(&iml->multi, imr, sizeof(*imr));
-        iml->next = inet->mc_list;
+        iml->next_rcu = inet->mc_list;
         iml->sflist = NULL;
         iml->sfmode = MCAST_EXCLUDE;
         rcu_assign_pointer(inet->mc_list, iml);
@@ -1821,17 +1838,14 @@ EXPORT_SYMBOL(ip_mc_join_group);
 
 static void ip_sf_socklist_reclaim(struct rcu_head *rp)
 {
-        struct ip_sf_socklist *psf;
-
-        psf = container_of(rp, struct ip_sf_socklist, rcu);
+        kfree(container_of(rp, struct ip_sf_socklist, rcu));
         /* sk_omem_alloc should have been decreased by the caller*/
-        kfree(psf);
 }
 
 static int ip_mc_leave_src(struct sock *sk, struct ip_mc_socklist *iml,
                            struct in_device *in_dev)
 {
-        struct ip_sf_socklist *psf = iml->sflist;
+        struct ip_sf_socklist *psf = rtnl_dereference(iml->sflist);
         int err;
 
         if (psf == NULL) {
@@ -1851,11 +1865,8 @@ static int ip_mc_leave_src(struct sock *sk, struct ip_mc_socklist *iml,
 
 static void ip_mc_socklist_reclaim(struct rcu_head *rp)
 {
-        struct ip_mc_socklist *iml;
-
-        iml = container_of(rp, struct ip_mc_socklist, rcu);
+        kfree(container_of(rp, struct ip_mc_socklist, rcu));
         /* sk_omem_alloc should have been decreased by the caller*/
-        kfree(iml);
 }
 
 
@@ -1866,7 +1877,8 @@ static void ip_mc_socklist_reclaim(struct rcu_head *rp)
 int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr)
 {
         struct inet_sock *inet = inet_sk(sk);
-        struct ip_mc_socklist *iml, **imlp;
+        struct ip_mc_socklist *iml;
+        struct ip_mc_socklist __rcu **imlp;
         struct in_device *in_dev;
         struct net *net = sock_net(sk);
         __be32 group = imr->imr_multiaddr.s_addr;
@@ -1876,7 +1888,9 @@ int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr)
         rtnl_lock();
         in_dev = ip_mc_find_dev(net, imr);
         ifindex = imr->imr_ifindex;
-        for (imlp = &inet->mc_list; (iml = *imlp) != NULL; imlp = &iml->next) {
+        for (imlp = &inet->mc_list;
+             (iml = rtnl_dereference(*imlp)) != NULL;
+             imlp = &iml->next_rcu) {
                 if (iml->multi.imr_multiaddr.s_addr != group)
                         continue;
                 if (ifindex) {
@@ -1888,7 +1902,7 @@ int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr)
 
                 (void) ip_mc_leave_src(sk, iml, in_dev);
 
-                rcu_assign_pointer(*imlp, iml->next);
+                *imlp = iml->next_rcu;
 
                 if (in_dev)
                         ip_mc_dec_group(in_dev, group);
@@ -1934,7 +1948,7 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct
         }
         err = -EADDRNOTAVAIL;
 
-        for (pmc=inet->mc_list; pmc; pmc=pmc->next) {
+        for_each_pmc_rtnl(inet, pmc) {
                 if ((pmc->multi.imr_multiaddr.s_addr ==
                      imr.imr_multiaddr.s_addr) &&
                     (pmc->multi.imr_ifindex == imr.imr_ifindex))
@@ -1958,7 +1972,7 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct
                 pmc->sfmode = omode;
         }
 
-        psl = pmc->sflist;
+        psl = rtnl_dereference(pmc->sflist);
         if (!add) {
                 if (!psl)
                         goto done;      /* err = -EADDRNOTAVAIL */
@@ -2077,7 +2091,7 @@ int ip_mc_msfilter(struct sock *sk, struct ip_msfilter *msf, int ifindex)
                 goto done;
         }
 
-        for (pmc=inet->mc_list; pmc; pmc=pmc->next) {
+        for_each_pmc_rtnl(inet, pmc) {
                 if (pmc->multi.imr_multiaddr.s_addr == msf->imsf_multiaddr &&
                     pmc->multi.imr_ifindex == imr.imr_ifindex)
                         break;
@@ -2107,7 +2121,7 @@ int ip_mc_msfilter(struct sock *sk, struct ip_msfilter *msf, int ifindex)
                 (void) ip_mc_add_src(in_dev, &msf->imsf_multiaddr,
                                      msf->imsf_fmode, 0, NULL, 0);
         }
-        psl = pmc->sflist;
+        psl = rtnl_dereference(pmc->sflist);
         if (psl) {
                 (void) ip_mc_del_src(in_dev, &msf->imsf_multiaddr, pmc->sfmode,
                         psl->sl_count, psl->sl_addr, 0);
@@ -2155,7 +2169,7 @@ int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf,
         }
         err = -EADDRNOTAVAIL;
 
-        for (pmc=inet->mc_list; pmc; pmc=pmc->next) {
+        for_each_pmc_rtnl(inet, pmc) {
                 if (pmc->multi.imr_multiaddr.s_addr == msf->imsf_multiaddr &&
                     pmc->multi.imr_ifindex == imr.imr_ifindex)
                         break;
@@ -2163,7 +2177,7 @@ int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf,
         if (!pmc)               /* must have a prior join */
                 goto done;
         msf->imsf_fmode = pmc->sfmode;
-        psl = pmc->sflist;
+        psl = rtnl_dereference(pmc->sflist);
         rtnl_unlock();
         if (!psl) {
                 len = 0;
@@ -2208,7 +2222,7 @@ int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf,
 
         err = -EADDRNOTAVAIL;
 
-        for (pmc=inet->mc_list; pmc; pmc=pmc->next) {
+        for_each_pmc_rtnl(inet, pmc) {
                 if (pmc->multi.imr_multiaddr.s_addr == addr &&
                     pmc->multi.imr_ifindex == gsf->gf_interface)
                         break;
@@ -2216,7 +2230,7 @@ int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf,
         if (!pmc)               /* must have a prior join */
                 goto done;
         gsf->gf_fmode = pmc->sfmode;
-        psl = pmc->sflist;
+        psl = rtnl_dereference(pmc->sflist);
         rtnl_unlock();
         count = psl ? psl->sl_count : 0;
         copycount = count < gsf->gf_numsrc ? count : gsf->gf_numsrc;
@@ -2257,7 +2271,7 @@ int ip_mc_sf_allow(struct sock *sk, __be32 loc_addr, __be32 rmt_addr, int dif)
                 goto out;
 
         rcu_read_lock();
-        for (pmc=rcu_dereference(inet->mc_list); pmc; pmc=rcu_dereference(pmc->next)) {
+        for_each_pmc_rcu(inet, pmc) {
                 if (pmc->multi.imr_multiaddr.s_addr == loc_addr &&
                     pmc->multi.imr_ifindex == dif)
                         break;
@@ -2265,7 +2279,7 @@ int ip_mc_sf_allow(struct sock *sk, __be32 loc_addr, __be32 rmt_addr, int dif)
         ret = inet->mc_all;
         if (!pmc)
                 goto unlock;
-        psl = pmc->sflist;
+        psl = rcu_dereference(pmc->sflist);
         ret = (pmc->sfmode == MCAST_EXCLUDE);
         if (!psl)
                 goto unlock;
@@ -2300,10 +2314,10 @@ void ip_mc_drop_socket(struct sock *sk)
                 return;
 
         rtnl_lock();
-        while ((iml = inet->mc_list) != NULL) {
+        while ((iml = rtnl_dereference(inet->mc_list)) != NULL) {
                 struct in_device *in_dev;
-                rcu_assign_pointer(inet->mc_list, iml->next);
 
+                inet->mc_list = iml->next_rcu;
                 in_dev = inetdev_by_index(net, iml->multi.imr_ifindex);
                 (void) ip_mc_leave_src(sk, iml, in_dev);
                 if (in_dev != NULL)
@@ -2321,8 +2335,8 @@ int ip_check_mc(struct in_device *in_dev, __be32 mc_addr, __be32 src_addr, u16 p
         struct ip_sf_list *psf;
         int rv = 0;
 
-        read_lock(&in_dev->mc_list_lock);
-        for (im=in_dev->mc_list; im; im=im->next) {
+        rcu_read_lock();
+        for_each_pmc_rcu(in_dev, im) {
                 if (im->multiaddr == mc_addr)
                         break;
         }
@@ -2343,7 +2357,7 @@ int ip_check_mc(struct in_device *in_dev, __be32 mc_addr, __be32 src_addr, u16 p
                 } else
                         rv = 1; /* unspecified source; tentatively allow */
         }
-        read_unlock(&in_dev->mc_list_lock);
+        rcu_read_unlock();
         return rv;
 }
 
@@ -2369,13 +2383,11 @@ static inline struct ip_mc_list *igmp_mc_get_first(struct seq_file *seq)
                 in_dev = __in_dev_get_rcu(state->dev);
                 if (!in_dev)
                         continue;
-                read_lock(&in_dev->mc_list_lock);
-                im = in_dev->mc_list;
+                im = rcu_dereference(in_dev->mc_list);
                 if (im) {
                         state->in_dev = in_dev;
                         break;
                 }
-                read_unlock(&in_dev->mc_list_lock);
         }
         return im;
 }
@@ -2383,11 +2395,9 @@ static inline struct ip_mc_list *igmp_mc_get_first(struct seq_file *seq)
 static struct ip_mc_list *igmp_mc_get_next(struct seq_file *seq, struct ip_mc_list *im)
 {
         struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq);
-        im = im->next;
-        while (!im) {
-                if (likely(state->in_dev != NULL))
-                        read_unlock(&state->in_dev->mc_list_lock);
 
+        im = rcu_dereference(im->next_rcu);
+        while (!im) {
                 state->dev = next_net_device_rcu(state->dev);
                 if (!state->dev) {
                         state->in_dev = NULL;
@@ -2396,8 +2406,7 @@ static struct ip_mc_list *igmp_mc_get_next(struct seq_file *seq, struct ip_mc_li
                 state->in_dev = __in_dev_get_rcu(state->dev);
                 if (!state->in_dev)
                         continue;
-                read_lock(&state->in_dev->mc_list_lock);
-                im = state->in_dev->mc_list;
+                im = rcu_dereference(state->in_dev->mc_list);
         }
         return im;
 }
@@ -2433,10 +2442,8 @@ static void igmp_mc_seq_stop(struct seq_file *seq, void *v)
         __releases(rcu)
 {
         struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq);
-        if (likely(state->in_dev != NULL)) {
-                read_unlock(&state->in_dev->mc_list_lock);
-                state->in_dev = NULL;
-        }
+
+        state->in_dev = NULL;
         state->dev = NULL;
         rcu_read_unlock();
 }
@@ -2458,7 +2465,7 @@ static int igmp_mc_seq_show(struct seq_file *seq, void *v)
                 querier = "NONE";
 #endif
 
-                if (state->in_dev->mc_list == im) {
+                if (rcu_dereference(state->in_dev->mc_list) == im) {
                         seq_printf(seq, "%d\t%-10s: %5d %7s\n",
                                    state->dev->ifindex, state->dev->name, state->in_dev->mc_count, querier);
                 }
@@ -2517,8 +2524,7 @@ static inline struct ip_sf_list *igmp_mcf_get_first(struct seq_file *seq)
                 idev = __in_dev_get_rcu(state->dev);
                 if (unlikely(idev == NULL))
                         continue;
-                read_lock(&idev->mc_list_lock);
-                im = idev->mc_list;
+                im = rcu_dereference(idev->mc_list);
                 if (likely(im != NULL)) {
                         spin_lock_bh(&im->lock);
                         psf = im->sources;
@@ -2529,7 +2535,6 @@ static inline struct ip_sf_list *igmp_mcf_get_first(struct seq_file *seq)
                         }
                         spin_unlock_bh(&im->lock);
                 }
-                read_unlock(&idev->mc_list_lock);
         }
         return psf;
 }
@@ -2543,9 +2548,6 @@ static struct ip_sf_list *igmp_mcf_get_next(struct seq_file *seq, struct ip_sf_l
                 spin_unlock_bh(&state->im->lock);
                 state->im = state->im->next;
                 while (!state->im) {
-                        if (likely(state->idev != NULL))
-                                read_unlock(&state->idev->mc_list_lock);
-
                         state->dev = next_net_device_rcu(state->dev);
                         if (!state->dev) {
                                 state->idev = NULL;
@@ -2554,8 +2556,7 @@ static struct ip_sf_list *igmp_mcf_get_next(struct seq_file *seq, struct ip_sf_l
                         state->idev = __in_dev_get_rcu(state->dev);
                         if (!state->idev)
                                 continue;
-                        read_lock(&state->idev->mc_list_lock);
-                        state->im = state->idev->mc_list;
+                        state->im = rcu_dereference(state->idev->mc_list);
                 }
                 if (!state->im)
                         break;
@@ -2601,10 +2602,7 @@ static void igmp_mcf_seq_stop(struct seq_file *seq, void *v)
                 spin_unlock_bh(&state->im->lock);
                 state->im = NULL;
         }
-        if (likely(state->idev != NULL)) {
-                read_unlock(&state->idev->mc_list_lock);
-                state->idev = NULL;
-        }
+        state->idev = NULL;
         state->dev = NULL;
         rcu_read_unlock();
 }
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 7174370b1195..25e318153f14 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -55,7 +55,6 @@ EXPORT_SYMBOL(inet_get_local_port_range);
 int inet_csk_bind_conflict(const struct sock *sk,
                            const struct inet_bind_bucket *tb)
 {
-        const __be32 sk_rcv_saddr = inet_rcv_saddr(sk);
         struct sock *sk2;
         struct hlist_node *node;
         int reuse = sk->sk_reuse;
@@ -75,9 +74,9 @@ int inet_csk_bind_conflict(const struct sock *sk,
                      sk->sk_bound_dev_if == sk2->sk_bound_dev_if)) {
                         if (!reuse || !sk2->sk_reuse ||
                             sk2->sk_state == TCP_LISTEN) {
-                                const __be32 sk2_rcv_saddr = inet_rcv_saddr(sk2);
-                                if (!sk2_rcv_saddr || !sk_rcv_saddr ||
-                                    sk2_rcv_saddr == sk_rcv_saddr)
+                                const __be32 sk2_rcv_saddr = sk_rcv_saddr(sk2);
+                                if (!sk2_rcv_saddr || !sk_rcv_saddr(sk) ||
+                                    sk2_rcv_saddr == sk_rcv_saddr(sk))
                                         break;
                         }
                 }
@@ -358,17 +357,14 @@ struct dst_entry *inet_csk_route_req(struct sock *sk,
         struct ip_options *opt = inet_rsk(req)->opt;
         struct flowi fl = { .oif = sk->sk_bound_dev_if,
                             .mark = sk->sk_mark,
-                            .nl_u = { .ip4_u =
-                                      { .daddr = ((opt && opt->srr) ?
-                                                  opt->faddr :
-                                                  ireq->rmt_addr),
-                                        .saddr = ireq->loc_addr,
-                                        .tos = RT_CONN_FLAGS(sk) } },
+                            .fl4_dst = ((opt && opt->srr) ?
+                                          opt->faddr : ireq->rmt_addr),
+                            .fl4_src = ireq->loc_addr,
+                            .fl4_tos = RT_CONN_FLAGS(sk),
                             .proto = sk->sk_protocol,
                             .flags = inet_sk_flowi_flags(sk),
-                            .uli_u = { .ports =
-                                       { .sport = inet_sk(sk)->inet_sport,
-                                         .dport = ireq->rmt_port } } };
+                            .fl_ip_sport = inet_sk(sk)->inet_sport,
+                            .fl_ip_dport = ireq->rmt_port };
         struct net *net = sock_net(sk);
 
         security_req_classify_flow(req, &fl);
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index 9e94d7cf4f8a..d9bc85751c74 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -63,7 +63,7 @@
  *              refcnt: atomically against modifications on other CPU;
  *                 usually under some other lock to prevent node disappearing
  *              dtime: unused node list lock
- *              v4daddr: unchangeable
+ *              daddr: unchangeable
  *              ip_id_count: atomic value (no lock needed)
  */
 
@@ -79,15 +79,24 @@ static const struct inet_peer peer_fake_node = {
         .avl_height     = 0
 };
 
-static struct {
+struct inet_peer_base {
         struct inet_peer __rcu *root;
         spinlock_t      lock;
         int             total;
-} peers = {
+};
+
+static struct inet_peer_base v4_peers = {
+        .root           = peer_avl_empty_rcu,
+        .lock           = __SPIN_LOCK_UNLOCKED(v4_peers.lock),
+        .total          = 0,
+};
+
+static struct inet_peer_base v6_peers = {
         .root           = peer_avl_empty_rcu,
-        .lock           = __SPIN_LOCK_UNLOCKED(peers.lock),
+        .lock           = __SPIN_LOCK_UNLOCKED(v6_peers.lock),
         .total          = 0,
 };
+
 #define PEER_MAXDEPTH 40 /* sufficient for about 2^27 nodes */
 
 /* Exported for sysctl_net_ipv4.  */
@@ -152,28 +161,45 @@ static void unlink_from_unused(struct inet_peer *p)
         }
 }
 
+static int addr_compare(const struct inetpeer_addr *a,
+                        const struct inetpeer_addr *b)
+{
+        int i, n = (a->family == AF_INET ? 1 : 4);
+
+        for (i = 0; i < n; i++) {
+                if (a->a6[i] == b->a6[i])
+                        continue;
+                if (a->a6[i] < b->a6[i])
+                        return -1;
+                return 1;
+        }
+
+        return 0;
+}
+
 /*
  * Called with local BH disabled and the pool lock held.
  */
-#define lookup(_daddr, _stack)                                  \
+#define lookup(_daddr, _stack, _base)                           \
 ({                                                              \
         struct inet_peer *u;                                    \
         struct inet_peer __rcu **v;                             \
                                                                 \
         stackptr = _stack;                                      \
-        *stackptr++ = &peers.root;                              \
-        for (u = rcu_dereference_protected(peers.root,          \
-                        lockdep_is_held(&peers.lock));          \
+        *stackptr++ = &_base->root;                             \
+        for (u = rcu_dereference_protected(_base->root,         \
+                        lockdep_is_held(&_base->lock));         \
              u != peer_avl_empty; ) {                           \
-                if (_daddr == u->v4daddr)                       \
+                int cmp = addr_compare(_daddr, &u->daddr);      \
+                if (cmp == 0)                                   \
                         break;                                  \
-                if ((__force __u32)_daddr < (__force __u32)u->v4daddr)  \
+                if (cmp == -1)                                  \
                         v = &u->avl_left;                       \
                 else                                            \
                         v = &u->avl_right;                      \
                 *stackptr++ = v;                                \
                 u = rcu_dereference_protected(*v,               \
-                        lockdep_is_held(&peers.lock));          \
+                        lockdep_is_held(&_base->lock));         \
         }                                                       \
         u;                                                      \
 })
@@ -185,13 +211,15 @@ static void unlink_from_unused(struct inet_peer *p)
  * But every pointer we follow is guaranteed to be valid thanks to RCU.
  * We exit from this function if number of links exceeds PEER_MAXDEPTH
  */
-static struct inet_peer *lookup_rcu_bh(__be32 daddr)
+static struct inet_peer *lookup_rcu_bh(const struct inetpeer_addr *daddr,
+                                       struct inet_peer_base *base)
 {
-        struct inet_peer *u = rcu_dereference_bh(peers.root);
+        struct inet_peer *u = rcu_dereference_bh(base->root);
         int count = 0;
 
         while (u != peer_avl_empty) {
-                if (daddr == u->v4daddr) {
+                int cmp = addr_compare(daddr, &u->daddr);
+                if (cmp == 0) {
                         /* Before taking a reference, check if this entry was
                          * deleted, unlink_from_pool() sets refcnt=-1 to make
                          * distinction between an unused entry (refcnt=0) and
@@ -201,7 +229,7 @@ static struct inet_peer *lookup_rcu_bh(__be32 daddr)
                                 u = NULL;
                         return u;
                 }
-                if ((__force __u32)daddr < (__force __u32)u->v4daddr)
+                if (cmp == -1)
                         u = rcu_dereference_bh(u->avl_left);
                 else
                         u = rcu_dereference_bh(u->avl_right);
@@ -212,19 +240,19 @@ static struct inet_peer *lookup_rcu_bh(__be32 daddr)
 }
 
 /* Called with local BH disabled and the pool lock held. */
-#define lookup_rightempty(start)                                \
+#define lookup_rightempty(start, base)                          \
 ({                                                              \
         struct inet_peer *u;                                    \
         struct inet_peer __rcu **v;                             \
         *stackptr++ = &start->avl_left;                         \
         v = &start->avl_left;                                   \
         for (u = rcu_dereference_protected(*v,                  \
-                        lockdep_is_held(&peers.lock));          \
+                        lockdep_is_held(&base->lock));          \
              u->avl_right != peer_avl_empty_rcu; ) {            \
                 v = &u->avl_right;                              \
                 *stackptr++ = v;                                \
                 u = rcu_dereference_protected(*v,               \
-                        lockdep_is_held(&peers.lock));          \
+                        lockdep_is_held(&base->lock));          \
         }                                                       \
         u;                                                      \
 })
@@ -234,7 +262,8 @@ static struct inet_peer *lookup_rcu_bh(__be32 daddr)
  * Look into mm/map_avl.c for more detail description of the ideas.
  */
 static void peer_avl_rebalance(struct inet_peer __rcu **stack[],
-                struct inet_peer __rcu ***stackend)
+                               struct inet_peer __rcu ***stackend,
+                               struct inet_peer_base *base)
 {
         struct inet_peer __rcu **nodep;
         struct inet_peer *node, *l, *r;
@@ -243,20 +272,20 @@ static void peer_avl_rebalance(struct inet_peer __rcu **stack[],
         while (stackend > stack) {
                 nodep = *--stackend;
                 node = rcu_dereference_protected(*nodep,
-                                lockdep_is_held(&peers.lock));
+                                lockdep_is_held(&base->lock));
                 l = rcu_dereference_protected(node->avl_left,
-                                lockdep_is_held(&peers.lock));
+                                lockdep_is_held(&base->lock));
                 r = rcu_dereference_protected(node->avl_right,
-                                lockdep_is_held(&peers.lock));
+                                lockdep_is_held(&base->lock));
                 lh = node_height(l);
                 rh = node_height(r);
                 if (lh > rh + 1) { /* l: RH+2 */
                         struct inet_peer *ll, *lr, *lrl, *lrr;
                         int lrh;
                         ll = rcu_dereference_protected(l->avl_left,
-                                lockdep_is_held(&peers.lock));
+                                lockdep_is_held(&base->lock));
                         lr = rcu_dereference_protected(l->avl_right,
-                                lockdep_is_held(&peers.lock));
+                                lockdep_is_held(&base->lock));
                         lrh = node_height(lr);
                         if (lrh <= node_height(ll)) {   /* ll: RH+1 */
                                 RCU_INIT_POINTER(node->avl_left, lr);   /* lr: RH or RH+1 */
@@ -268,9 +297,9 @@ static void peer_avl_rebalance(struct inet_peer __rcu **stack[],
                                 RCU_INIT_POINTER(*nodep, l);
                         } else { /* ll: RH, lr: RH+1 */
                                 lrl = rcu_dereference_protected(lr->avl_left,
-                                        lockdep_is_held(&peers.lock));  /* lrl: RH or RH-1 */
+                                        lockdep_is_held(&base->lock));  /* lrl: RH or RH-1 */
                                 lrr = rcu_dereference_protected(lr->avl_right,
-                                        lockdep_is_held(&peers.lock));  /* lrr: RH or RH-1 */
+                                        lockdep_is_held(&base->lock));  /* lrr: RH or RH-1 */
                                 RCU_INIT_POINTER(node->avl_left, lrr);  /* lrr: RH or RH-1 */
                                 RCU_INIT_POINTER(node->avl_right, r);   /* r: RH */
                                 node->avl_height = rh + 1; /* node: RH+1 */
@@ -286,9 +315,9 @@ static void peer_avl_rebalance(struct inet_peer __rcu **stack[],
                         struct inet_peer *rr, *rl, *rlr, *rll;
                         int rlh;
                         rr = rcu_dereference_protected(r->avl_right,
-                                lockdep_is_held(&peers.lock));
+                                lockdep_is_held(&base->lock));
                         rl = rcu_dereference_protected(r->avl_left,
-                                lockdep_is_held(&peers.lock));
+                                lockdep_is_held(&base->lock));
                         rlh = node_height(rl);
                         if (rlh <= node_height(rr)) {   /* rr: LH+1 */
                                 RCU_INIT_POINTER(node->avl_right, rl);  /* rl: LH or LH+1 */
@@ -300,9 +329,9 @@ static void peer_avl_rebalance(struct inet_peer __rcu **stack[],
                                 RCU_INIT_POINTER(*nodep, r);
                         } else { /* rr: RH, rl: RH+1 */
                                 rlr = rcu_dereference_protected(rl->avl_right,
-                                        lockdep_is_held(&peers.lock));  /* rlr: LH or LH-1 */
+                                        lockdep_is_held(&base->lock));  /* rlr: LH or LH-1 */
                                 rll = rcu_dereference_protected(rl->avl_left,
-                                        lockdep_is_held(&peers.lock));  /* rll: LH or LH-1 */
+                                        lockdep_is_held(&base->lock));  /* rll: LH or LH-1 */
                                 RCU_INIT_POINTER(node->avl_right, rll); /* rll: LH or LH-1 */
                                 RCU_INIT_POINTER(node->avl_left, l);    /* l: LH */
                                 node->avl_height = lh + 1; /* node: LH+1 */
@@ -321,14 +350,14 @@ static void peer_avl_rebalance(struct inet_peer __rcu **stack[],
 }
 
 /* Called with local BH disabled and the pool lock held. */
-#define link_to_pool(n)                                         \
+#define link_to_pool(n, base)                                   \
 do {                                                            \
         n->avl_height = 1;                                      \
         n->avl_left = peer_avl_empty_rcu;                       \
         n->avl_right = peer_avl_empty_rcu;                      \
         /* lockless readers can catch us now */                 \
         rcu_assign_pointer(**--stackptr, n);                    \
-        peer_avl_rebalance(stack, stackptr);                    \
+        peer_avl_rebalance(stack, stackptr, base);              \
 } while (0)
 
 static void inetpeer_free_rcu(struct rcu_head *head)
@@ -337,13 +366,13 @@ static void inetpeer_free_rcu(struct rcu_head *head)
 }
 
 /* May be called with local BH enabled. */
-static void unlink_from_pool(struct inet_peer *p)
+static void unlink_from_pool(struct inet_peer *p, struct inet_peer_base *base)
 {
         int do_free;
 
         do_free = 0;
 
-        spin_lock_bh(&peers.lock);
+        spin_lock_bh(&base->lock);
         /* Check the reference counter.  It was artificially incremented by 1
          * in cleanup() function to prevent sudden disappearing.  If we can
          * atomically (because of lockless readers) take this last reference,
@@ -353,7 +382,7 @@ static void unlink_from_pool(struct inet_peer *p)
         if (atomic_cmpxchg(&p->refcnt, 1, -1) == 1) {
                 struct inet_peer __rcu **stack[PEER_MAXDEPTH];
                 struct inet_peer __rcu ***stackptr, ***delp;
-                if (lookup(p->v4daddr, stack) != p)
+                if (lookup(&p->daddr, stack, base) != p)
                         BUG();
                 delp = stackptr - 1; /* *delp[0] == p */
                 if (p->avl_left == peer_avl_empty_rcu) {
@@ -362,11 +391,11 @@ static void unlink_from_pool(struct inet_peer *p)
                 } else {
                         /* look for a node to insert instead of p */
                         struct inet_peer *t;
-                        t = lookup_rightempty(p);
+                        t = lookup_rightempty(p, base);
                         BUG_ON(rcu_dereference_protected(*stackptr[-1],
-                                        lockdep_is_held(&peers.lock)) != t);
+                                        lockdep_is_held(&base->lock)) != t);
                         **--stackptr = t->avl_left;
-                        /* t is removed, t->v4daddr > x->v4daddr for any
+                        /* t is removed, t->daddr > x->daddr for any
                          * x in p->avl_left subtree.
                          * Put t in the old place of p. */
                         RCU_INIT_POINTER(*delp[0], t);
@@ -376,11 +405,11 @@ static void unlink_from_pool(struct inet_peer *p)
                         BUG_ON(delp[1] != &p->avl_left);
                         delp[1] = &t->avl_left; /* was &p->avl_left */
                 }
-                peer_avl_rebalance(stack, stackptr);
-                peers.total--;
+                peer_avl_rebalance(stack, stackptr, base);
+                base->total--;
                 do_free = 1;
         }
-        spin_unlock_bh(&peers.lock);
+        spin_unlock_bh(&base->lock);
 
         if (do_free)
                 call_rcu_bh(&p->rcu, inetpeer_free_rcu);
@@ -395,6 +424,16 @@ static void unlink_from_pool(struct inet_peer *p)
                 inet_putpeer(p);
 }
 
+static struct inet_peer_base *family_to_base(int family)
+{
+        return (family == AF_INET ? &v4_peers : &v6_peers);
+}
+
+static struct inet_peer_base *peer_to_base(struct inet_peer *p)
+{
+        return family_to_base(p->daddr.family);
+}
+
 /* May be called with local BH enabled. */
 static int cleanup_once(unsigned long ttl)
 {
@@ -428,21 +467,22 @@ static int cleanup_once(unsigned long ttl)
                  * happen because of entry limits in route cache. */
                 return -1;
 
-        unlink_from_pool(p);
+        unlink_from_pool(p, peer_to_base(p));
         return 0;
 }
 
 /* Called with or without local BH being disabled. */
-struct inet_peer *inet_getpeer(__be32 daddr, int create)
+struct inet_peer *inet_getpeer(struct inetpeer_addr *daddr, int create)
 {
-        struct inet_peer *p;
         struct inet_peer __rcu **stack[PEER_MAXDEPTH], ***stackptr;
+        struct inet_peer_base *base = family_to_base(AF_INET);
+        struct inet_peer *p;
 
         /* Look up for the address quickly, lockless.
          * Because of a concurrent writer, we might not find an existing entry.
          */
         rcu_read_lock_bh();
-        p = lookup_rcu_bh(daddr);
+        p = lookup_rcu_bh(daddr, base);
         rcu_read_unlock_bh();
 
         if (p) {
@@ -456,50 +496,57 @@ struct inet_peer *inet_getpeer(__be32 daddr, int create)
         /* retry an exact lookup, taking the lock before.
          * At least, nodes should be hot in our cache.
          */
-        spin_lock_bh(&peers.lock);
-        p = lookup(daddr, stack);
+        spin_lock_bh(&base->lock);
+        p = lookup(daddr, stack, base);
         if (p != peer_avl_empty) {
                 atomic_inc(&p->refcnt);
-                spin_unlock_bh(&peers.lock);
+                spin_unlock_bh(&base->lock);
                 /* Remove the entry from unused list if it was there. */
                 unlink_from_unused(p);
                 return p;
         }
         p = create ? kmem_cache_alloc(peer_cachep, GFP_ATOMIC) : NULL;
         if (p) {
-                p->v4daddr = daddr;
+                p->daddr = *daddr;
                 atomic_set(&p->refcnt, 1);
                 atomic_set(&p->rid, 0);
-                atomic_set(&p->ip_id_count, secure_ip_id(daddr));
+                atomic_set(&p->ip_id_count, secure_ip_id(daddr->a4));
                 p->tcp_ts_stamp = 0;
                 INIT_LIST_HEAD(&p->unused);
 
 
                 /* Link the node. */
-                link_to_pool(p);
-                peers.total++;
+                link_to_pool(p, base);
+                base->total++;
         }
-        spin_unlock_bh(&peers.lock);
+        spin_unlock_bh(&base->lock);
 
-        if (peers.total >= inet_peer_threshold)
+        if (base->total >= inet_peer_threshold)
                 /* Remove one less-recently-used entry. */
                 cleanup_once(0);
 
         return p;
 }
 
+static int compute_total(void)
+{
+        return v4_peers.total + v6_peers.total;
+}
+EXPORT_SYMBOL_GPL(inet_getpeer);
+
 /* Called with local BH disabled. */
 static void peer_check_expire(unsigned long dummy)
 {
         unsigned long now = jiffies;
-        int ttl;
+        int ttl, total;
 
-        if (peers.total >= inet_peer_threshold)
+        total = compute_total();
+        if (total >= inet_peer_threshold)
                 ttl = inet_peer_minttl;
         else
                 ttl = inet_peer_maxttl
                                 - (inet_peer_maxttl - inet_peer_minttl) / HZ *
-                                        peers.total / inet_peer_threshold * HZ;
+                                        total / inet_peer_threshold * HZ;
         while (!cleanup_once(ttl)) {
                 if (jiffies != now)
                         break;
@@ -508,13 +555,14 @@ static void peer_check_expire(unsigned long dummy)
         /* Trigger the timer after inet_peer_gc_mintime .. inet_peer_gc_maxtime
          * interval depending on the total number of entries (more entries,
          * less interval). */
-        if (peers.total >= inet_peer_threshold)
+        total = compute_total();
+        if (total >= inet_peer_threshold)
                 peer_periodic_timer.expires = jiffies + inet_peer_gc_mintime;
         else
                 peer_periodic_timer.expires = jiffies
                         + inet_peer_gc_maxtime
                         - (inet_peer_gc_maxtime - inet_peer_gc_mintime) / HZ *
-                                peers.total / inet_peer_threshold * HZ;
+                                total / inet_peer_threshold * HZ;
         add_timer(&peer_periodic_timer);
 }
 
@@ -530,3 +578,4 @@ void inet_putpeer(struct inet_peer *p)
 
         local_bh_enable();
 }
+EXPORT_SYMBOL_GPL(inet_putpeer);
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 168440834ade..e6215bdd96c0 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -141,7 +141,7 @@ static void ip4_frag_init(struct inet_frag_queue *q, void *a)
         qp->daddr = arg->iph->daddr;
         qp->user = arg->user;
         qp->peer = sysctl_ipfrag_max_dist ?
-                inet_getpeer(arg->iph->saddr, 1) : NULL;
+                inet_getpeer_v4(arg->iph->saddr, 1) : NULL;
 }
 
 static __inline__ void ip4_frag_free(struct inet_frag_queue *q)
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 70ff77f02eee..eb68a0e34e49 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -405,11 +405,11 @@ static struct ip_tunnel *ipgre_tunnel_locate(struct net *net,
         if (parms->name[0])
                 strlcpy(name, parms->name, IFNAMSIZ);
         else
-                sprintf(name, "gre%%d");
+                strcpy(name, "gre%d");
 
         dev = alloc_netdev(sizeof(*t), name, ipgre_tunnel_setup);
         if (!dev)
-          return NULL;
+                return NULL;
 
         dev_net_set(dev, net);
 
@@ -634,7 +634,7 @@ static int ipgre_rcv(struct sk_buff *skb)
 #ifdef CONFIG_NET_IPGRE_BROADCAST
                 if (ipv4_is_multicast(iph->daddr)) {
                         /* Looped back packet, drop it! */
-                        if (skb_rtable(skb)->fl.iif == 0)
+                        if (rt_is_output_route(skb_rtable(skb)))
                                 goto drop;
                         tunnel->dev->stats.multicast++;
                         skb->pkt_type = PACKET_BROADCAST;
@@ -772,16 +772,11 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
         {
                 struct flowi fl = {
                         .oif = tunnel->parms.link,
-                        .nl_u = {
-                                .ip4_u = {
-                                        .daddr = dst,
-                                        .saddr = tiph->saddr,
-                                        .tos = RT_TOS(tos)
-                                }
-                        },
-                        .proto = IPPROTO_GRE
-                }
-;
+                        .fl4_dst = dst,
+                        .fl4_src = tiph->saddr,
+                        .fl4_tos = RT_TOS(tos),
+                        .fl_gre_key = tunnel->parms.o_key
+                };
                 if (ip_route_output_key(dev_net(dev), &rt, &fl)) {
                         dev->stats.tx_carrier_errors++;
                         goto tx_error;
@@ -823,7 +818,7 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
                              !ipv4_is_multicast(tunnel->parms.iph.daddr)) ||
                             rt6->rt6i_dst.plen == 128) {
                                 rt6->rt6i_flags |= RTF_MODIFIED;
-                                skb_dst(skb)->metrics[RTAX_MTU-1] = mtu;
+                                dst_metric_set(skb_dst(skb), RTAX_MTU, mtu);
                         }
                 }
 
@@ -895,7 +890,7 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
                         iph->ttl = ((struct ipv6hdr *)old_iph)->hop_limit;
 #endif
                 else
-                        iph->ttl = dst_metric(&rt->dst, RTAX_HOPLIMIT);
+                        iph->ttl = ip4_dst_hoplimit(&rt->dst);
         }
 
         ((__be16 *)(iph + 1))[0] = tunnel->parms.o_flags;
@@ -951,14 +946,11 @@ static int ipgre_tunnel_bind_dev(struct net_device *dev)
         if (iph->daddr) {
                 struct flowi fl = {
                         .oif = tunnel->parms.link,
-                        .nl_u = {
-                                .ip4_u = {
-                                        .daddr = iph->daddr,
-                                        .saddr = iph->saddr,
-                                        .tos = RT_TOS(iph->tos)
-                                }
-                        },
-                        .proto = IPPROTO_GRE
+                        .fl4_dst = iph->daddr,
+                        .fl4_src = iph->saddr,
+                        .fl4_tos = RT_TOS(iph->tos),
+                        .proto = IPPROTO_GRE,
+                        .fl_gre_key = tunnel->parms.o_key
                 };
                 struct rtable *rt;
 
@@ -1216,14 +1208,11 @@ static int ipgre_open(struct net_device *dev)
         if (ipv4_is_multicast(t->parms.iph.daddr)) {
                 struct flowi fl = {
                         .oif = t->parms.link,
-                        .nl_u = {
-                                .ip4_u = {
-                                        .daddr = t->parms.iph.daddr,
-                                        .saddr = t->parms.iph.saddr,
-                                        .tos = RT_TOS(t->parms.iph.tos)
-                                }
-                        },
-                        .proto = IPPROTO_GRE
+                        .fl4_dst = t->parms.iph.daddr,
+                        .fl4_src = t->parms.iph.saddr,
+                        .fl4_tos = RT_TOS(t->parms.iph.tos),
+                        .proto = IPPROTO_GRE,
+                        .fl_gre_key = t->parms.o_key
                 };
                 struct rtable *rt;
 
@@ -1775,3 +1764,4 @@ module_exit(ipgre_fini);
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_RTNL_LINK("gre");
 MODULE_ALIAS_RTNL_LINK("gretap");
+MODULE_ALIAS("gre0");
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 439d2a34ee44..04c7b3ba6b39 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -82,6 +82,7 @@
 #include <linux/tcp.h>
 
 int sysctl_ip_default_ttl __read_mostly = IPDEFTTL;
+EXPORT_SYMBOL(sysctl_ip_default_ttl);
 
 /* Generate a checksum for an outgoing IP datagram. */
 __inline__ void ip_send_check(struct iphdr *iph)
@@ -130,7 +131,7 @@ static inline int ip_select_ttl(struct inet_sock *inet, struct dst_entry *dst)
         int ttl = inet->uc_ttl;
 
         if (ttl < 0)
-                ttl = dst_metric(dst, RTAX_HOPLIMIT);
+                ttl = ip4_dst_hoplimit(dst);
         return ttl;
 }
 
@@ -341,15 +342,13 @@ int ip_queue_xmit(struct sk_buff *skb)
                 {
                         struct flowi fl = { .oif = sk->sk_bound_dev_if,
                                             .mark = sk->sk_mark,
-                                            .nl_u = { .ip4_u =
-                                                      { .daddr = daddr,
-                                                        .saddr = inet->inet_saddr,
-                                                        .tos = RT_CONN_FLAGS(sk) } },
+                                            .fl4_dst = daddr,
+                                            .fl4_src = inet->inet_saddr,
+                                            .fl4_tos = RT_CONN_FLAGS(sk),
                                             .proto = sk->sk_protocol,
                                             .flags = inet_sk_flowi_flags(sk),
-                                            .uli_u = { .ports =
-                                                       { .sport = inet->inet_sport,
-                                                         .dport = inet->inet_dport } } };
+                                            .fl_ip_sport = inet->inet_sport,
+                                            .fl_ip_dport = inet->inet_dport };
 
                         /* If this fails, retransmit mechanism of transport layer will
                          * keep trying until route appears or the connection times
@@ -1404,14 +1403,11 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar
 
         {
                 struct flowi fl = { .oif = arg->bound_dev_if,
-                                    .nl_u = { .ip4_u =
-                                              { .daddr = daddr,
-                                                .saddr = rt->rt_spec_dst,
-                                                .tos = RT_TOS(ip_hdr(skb)->tos) } },
-                                    /* Not quite clean, but right. */
-                                    .uli_u = { .ports =
-                                               { .sport = tcp_hdr(skb)->dest,
-                                                 .dport = tcp_hdr(skb)->source } },
+                                    .fl4_dst = daddr,
+                                    .fl4_src = rt->rt_spec_dst,
+                                    .fl4_tos = RT_TOS(ip_hdr(skb)->tos),
+                                    .fl_ip_sport = tcp_hdr(skb)->dest,
+                                    .fl_ip_dport = tcp_hdr(skb)->source,
                                     .proto = sk->sk_protocol,
                                     .flags = ip_reply_arg_flowi_flags(arg) };
                 security_skb_classify_flow(skb, &fl);
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 3a6e1ec5e9ae..2b097752426b 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -1191,13 +1191,13 @@ static int __init ic_dynamic(void)
                     (ic_proto_enabled & IC_USE_DHCP) &&
                     ic_dhcp_msgtype != DHCPACK) {
                         ic_got_reply = 0;
-                        printk(",");
+                        printk(KERN_CONT ",");
                         continue;
                 }
 #endif /* IPCONFIG_DHCP */
 
                 if (ic_got_reply) {
-                        printk(" OK\n");
+                        printk(KERN_CONT " OK\n");
                         break;
                 }
 
@@ -1205,7 +1205,7 @@ static int __init ic_dynamic(void)
                         continue;
 
                 if (! --retries) {
-                        printk(" timed out!\n");
+                        printk(KERN_CONT " timed out!\n");
                         break;
                 }
 
@@ -1215,7 +1215,7 @@ static int __init ic_dynamic(void)
                 if (timeout > CONF_TIMEOUT_MAX)
                         timeout = CONF_TIMEOUT_MAX;
 
-                printk(".");
+                printk(KERN_CONT ".");
         }
 
 #ifdef IPCONFIG_BOOTP
@@ -1236,7 +1236,7 @@ static int __init ic_dynamic(void)
                 ((ic_got_reply & IC_RARP) ? "RARP"
                  : (ic_proto_enabled & IC_USE_DHCP) ? "DHCP" : "BOOTP"),
                 &ic_servaddr);
-        printk("my address is %pI4\n", &ic_myaddr);
+        printk(KERN_CONT "my address is %pI4\n", &ic_myaddr);
 
         return 0;
 }
@@ -1468,19 +1468,19 @@ static int __init ip_auto_config(void)
         /*
          * Clue in the operator.
          */
-        printk("IP-Config: Complete:");
-        printk("\n     device=%s", ic_dev->name);
-        printk(", addr=%pI4", &ic_myaddr);
-        printk(", mask=%pI4", &ic_netmask);
-        printk(", gw=%pI4", &ic_gateway);
-        printk(",\n     host=%s, domain=%s, nis-domain=%s",
+        printk("IP-Config: Complete:\n");
+        printk("     device=%s", ic_dev->name);
+        printk(KERN_CONT ", addr=%pI4", &ic_myaddr);
+        printk(KERN_CONT ", mask=%pI4", &ic_netmask);
+        printk(KERN_CONT ", gw=%pI4", &ic_gateway);
+        printk(KERN_CONT ",\n     host=%s, domain=%s, nis-domain=%s",
                utsname()->nodename, ic_domain, utsname()->domainname);
-        printk(",\n     bootserver=%pI4", &ic_servaddr);
-        printk(", rootserver=%pI4", &root_server_addr);
-        printk(", rootpath=%s", root_server_path);
+        printk(KERN_CONT ",\n     bootserver=%pI4", &ic_servaddr);
+        printk(KERN_CONT ", rootserver=%pI4", &root_server_addr);
+        printk(KERN_CONT ", rootpath=%s", root_server_path);
         if (ic_dev_mtu)
-                printk(", mtu=%d", ic_dev_mtu);
-        printk("\n");
+                printk(KERN_CONT ", mtu=%d", ic_dev_mtu);
+        printk(KERN_CONT "\n");
 #endif /* !SILENT */
 
         return 0;
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index cd300aaee78f..988f52fba54a 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -463,13 +463,9 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
         {
                 struct flowi fl = {
                         .oif = tunnel->parms.link,
-                        .nl_u = {
-                                .ip4_u = {
-                                        .daddr = dst,
-                                        .saddr = tiph->saddr,
-                                        .tos = RT_TOS(tos)
-                                }
-                        },
+                        .fl4_dst = dst,
+                        .fl4_src= tiph->saddr,
+                        .fl4_tos = RT_TOS(tos),
                         .proto = IPPROTO_IPIP
                 };
 
@@ -589,13 +585,9 @@ static void ipip_tunnel_bind_dev(struct net_device *dev)
         if (iph->daddr) {
                 struct flowi fl = {
                         .oif = tunnel->parms.link,
-                        .nl_u = {
-                                .ip4_u = {
-                                        .daddr = iph->daddr,
-                                        .saddr = iph->saddr,
-                                        .tos = RT_TOS(iph->tos)
-                                }
-                        },
+                        .fl4_dst = iph->daddr,
+                        .fl4_src = iph->saddr,
+                        .fl4_tos = RT_TOS(iph->tos),
                         .proto = IPPROTO_IPIP
                 };
                 struct rtable *rt;
@@ -921,3 +913,4 @@ static void __exit ipip_fini(void)
 module_init(ipip_init);
 module_exit(ipip_fini);
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("tunl0");
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 86dd5691af46..3f3a9afd73e0 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1537,13 +1537,9 @@ static void ipmr_queue_xmit(struct net *net, struct mr_table *mrt,
         if (vif->flags & VIFF_TUNNEL) {
                 struct flowi fl = {
                         .oif = vif->link,
-                        .nl_u = {
-                                .ip4_u = {
-                                        .daddr = vif->remote,
-                                        .saddr = vif->local,
-                                        .tos = RT_TOS(iph->tos)
-                                }
-                        },
+                        .fl4_dst = vif->remote,
+                        .fl4_src = vif->local,
+                        .fl4_tos = RT_TOS(iph->tos),
                         .proto = IPPROTO_IPIP
                 };
 
@@ -1553,12 +1549,8 @@ static void ipmr_queue_xmit(struct net *net, struct mr_table *mrt,
         } else {
                 struct flowi fl = {
                         .oif = vif->link,
-                        .nl_u = {
-                                .ip4_u = {
-                                        .daddr = iph->daddr,
-                                        .tos = RT_TOS(iph->tos)
-                                }
-                        },
+                        .fl4_dst = iph->daddr,
+                        .fl4_tos = RT_TOS(iph->tos),
                         .proto = IPPROTO_IPIP
                 };
 
@@ -1654,7 +1646,7 @@ static int ip_mr_forward(struct net *net, struct mr_table *mrt,
         if (mrt->vif_table[vif].dev != skb->dev) {
                 int true_vifi;
 
-                if (skb_rtable(skb)->fl.iif == 0) {
+                if (rt_is_output_route(skb_rtable(skb))) {
                         /* It is our own packet, looped back.
                          * Very complicated situation...
                          *
diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c
index d88a46c54fd1..994a1f29ebbc 100644
--- a/net/ipv4/netfilter.c
+++ b/net/ipv4/netfilter.c
@@ -31,10 +31,10 @@ int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type)
          * packets with foreign saddr to appear on the NF_INET_LOCAL_OUT hook.
          */
         if (addr_type == RTN_LOCAL) {
-                fl.nl_u.ip4_u.daddr = iph->daddr;
+                fl.fl4_dst = iph->daddr;
                 if (type == RTN_LOCAL)
-                        fl.nl_u.ip4_u.saddr = iph->saddr;
-                fl.nl_u.ip4_u.tos = RT_TOS(iph->tos);
+                        fl.fl4_src = iph->saddr;
+                fl.fl4_tos = RT_TOS(iph->tos);
                 fl.oif = skb->sk ? skb->sk->sk_bound_dev_if : 0;
                 fl.mark = skb->mark;
                 fl.flags = skb->sk ? inet_sk_flowi_flags(skb->sk) : 0;
@@ -47,7 +47,7 @@ int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type)
         } else {
                 /* non-local src, find valid iif to satisfy
                  * rp-filter when calling ip_route_input. */
-                fl.nl_u.ip4_u.daddr = iph->saddr;
+                fl.fl4_dst = iph->saddr;
                 if (ip_route_output_key(net, &rt, &fl) != 0)
                         return -1;
 
diff --git a/net/ipv4/netfilter/Makefile b/net/ipv4/netfilter/Makefile
index 48111594ee9b..19eb59d01037 100644
--- a/net/ipv4/netfilter/Makefile
+++ b/net/ipv4/netfilter/Makefile
@@ -3,15 +3,15 @@
 #
 
 # objects for l3 independent conntrack
-nf_conntrack_ipv4-objs  :=  nf_conntrack_l3proto_ipv4.o nf_conntrack_proto_icmp.o
+nf_conntrack_ipv4-y     :=  nf_conntrack_l3proto_ipv4.o nf_conntrack_proto_icmp.o
 ifeq ($(CONFIG_NF_CONNTRACK_PROC_COMPAT),y)
 ifeq ($(CONFIG_PROC_FS),y)
 nf_conntrack_ipv4-objs  += nf_conntrack_l3proto_ipv4_compat.o
 endif
 endif
 
-nf_nat-objs             := nf_nat_core.o nf_nat_helper.o nf_nat_proto_unknown.o nf_nat_proto_common.o nf_nat_proto_tcp.o nf_nat_proto_udp.o nf_nat_proto_icmp.o
-iptable_nat-objs        := nf_nat_rule.o nf_nat_standalone.o
+nf_nat-y                := nf_nat_core.o nf_nat_helper.o nf_nat_proto_unknown.o nf_nat_proto_common.o nf_nat_proto_tcp.o nf_nat_proto_udp.o nf_nat_proto_icmp.o
+iptable_nat-y   := nf_nat_rule.o nf_nat_standalone.o
 
 # connection tracking
 obj-$(CONFIG_NF_CONNTRACK_IPV4) += nf_conntrack_ipv4.o
diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c
index 43eec80c0e7c..1ff79e557f96 100644
--- a/net/ipv4/netfilter/ipt_REJECT.c
+++ b/net/ipv4/netfilter/ipt_REJECT.c
@@ -116,7 +116,7 @@ static void send_reset(struct sk_buff *oldskb, int hook)
         if (ip_route_me_harder(nskb, addr_type))
                 goto free_nskb;
 
-        niph->ttl       = dst_metric(skb_dst(nskb), RTAX_HOPLIMIT);
+        niph->ttl       = ip4_dst_hoplimit(skb_dst(nskb));
 
         /* "Never happens" */
         if (nskb->len > dst_mtu(skb_dst(nskb)))
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 1f85ef289895..a3d5ab786e81 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -549,10 +549,9 @@ static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
         {
                 struct flowi fl = { .oif = ipc.oif,
                                     .mark = sk->sk_mark,
-                                    .nl_u = { .ip4_u =
-                                              { .daddr = daddr,
-                                                .saddr = saddr,
-                                                .tos = tos } },
+                                    .fl4_dst = daddr,
+                                    .fl4_src = saddr,
+                                    .fl4_tos = tos,
                                     .proto = inet->hdrincl ? IPPROTO_RAW :
                                                              sk->sk_protocol,
                                   };
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 987bf9adb318..ae520963540f 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -139,20 +139,26 @@ static unsigned long expires_ljiffies;
  */
 
 static struct dst_entry *ipv4_dst_check(struct dst_entry *dst, u32 cookie);
+static unsigned int      ipv4_default_advmss(const struct dst_entry *dst);
+static unsigned int      ipv4_default_mtu(const struct dst_entry *dst);
 static void              ipv4_dst_destroy(struct dst_entry *dst);
-static void              ipv4_dst_ifdown(struct dst_entry *dst,
-                                         struct net_device *dev, int how);
 static struct dst_entry *ipv4_negative_advice(struct dst_entry *dst);
 static void              ipv4_link_failure(struct sk_buff *skb);
 static void              ip_rt_update_pmtu(struct dst_entry *dst, u32 mtu);
 static int rt_garbage_collect(struct dst_ops *ops);
 
+static void ipv4_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
+                            int how)
+{
+}
 
 static struct dst_ops ipv4_dst_ops = {
         .family =               AF_INET,
         .protocol =             cpu_to_be16(ETH_P_IP),
         .gc =                   rt_garbage_collect,
         .check =                ipv4_dst_check,
+        .default_advmss =       ipv4_default_advmss,
+        .default_mtu =          ipv4_default_mtu,
         .destroy =              ipv4_dst_destroy,
         .ifdown =               ipv4_dst_ifdown,
         .negative_advice =      ipv4_negative_advice,
@@ -381,8 +387,7 @@ static int rt_cache_seq_show(struct seq_file *seq, void *v)
                         (__force u32)r->rt_gateway,
                         r->rt_flags, atomic_read(&r->dst.__refcnt),
                         r->dst.__use, 0, (__force u32)r->rt_src,
-                        (dst_metric(&r->dst, RTAX_ADVMSS) ?
-                             (int)dst_metric(&r->dst, RTAX_ADVMSS) + 40 : 0),
+                        dst_metric_advmss(&r->dst) + 40,
                         dst_metric(&r->dst, RTAX_WINDOW),
                         (int)((dst_metric(&r->dst, RTAX_RTT) >> 3) +
                               dst_metric(&r->dst, RTAX_RTTVAR)),
@@ -621,7 +626,7 @@ static inline int rt_fast_clean(struct rtable *rth)
         /* Kill broadcast/multicast entries very aggresively, if they
            collide in hash table with more useful entries */
         return (rth->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST)) &&
-                rth->fl.iif && rth->dst.rt_next;
+                rt_is_input_route(rth) && rth->dst.rt_next;
 }
 
 static inline int rt_valuable(struct rtable *rth)
@@ -666,7 +671,7 @@ static inline u32 rt_score(struct rtable *rt)
         if (rt_valuable(rt))
                 score |= (1<<31);
 
-        if (!rt->fl.iif ||
+        if (rt_is_output_route(rt) ||
             !(rt->rt_flags & (RTCF_BROADCAST|RTCF_MULTICAST|RTCF_LOCAL)))
                 score |= (1<<30);
 
@@ -682,17 +687,17 @@ static inline bool rt_caching(const struct net *net)
 static inline bool compare_hash_inputs(const struct flowi *fl1,
                                         const struct flowi *fl2)
 {
-        return ((((__force u32)fl1->nl_u.ip4_u.daddr ^ (__force u32)fl2->nl_u.ip4_u.daddr) |
-                ((__force u32)fl1->nl_u.ip4_u.saddr ^ (__force u32)fl2->nl_u.ip4_u.saddr) |
+        return ((((__force u32)fl1->fl4_dst ^ (__force u32)fl2->fl4_dst) |
+                ((__force u32)fl1->fl4_src ^ (__force u32)fl2->fl4_src) |
                 (fl1->iif ^ fl2->iif)) == 0);
 }
 
 static inline int compare_keys(struct flowi *fl1, struct flowi *fl2)
 {
-        return (((__force u32)fl1->nl_u.ip4_u.daddr ^ (__force u32)fl2->nl_u.ip4_u.daddr) |
-                ((__force u32)fl1->nl_u.ip4_u.saddr ^ (__force u32)fl2->nl_u.ip4_u.saddr) |
+        return (((__force u32)fl1->fl4_dst ^ (__force u32)fl2->fl4_dst) |
+                ((__force u32)fl1->fl4_src ^ (__force u32)fl2->fl4_src) |
                 (fl1->mark ^ fl2->mark) |
-                (*(u16 *)&fl1->nl_u.ip4_u.tos ^ *(u16 *)&fl2->nl_u.ip4_u.tos) |
+                (*(u16 *)&fl1->fl4_tos ^ *(u16 *)&fl2->fl4_tos) |
                 (fl1->oif ^ fl2->oif) |
                 (fl1->iif ^ fl2->iif)) == 0;
 }
@@ -1124,7 +1129,7 @@ restart:
                  */
 
                 rt->dst.flags |= DST_NOCACHE;
-                if (rt->rt_type == RTN_UNICAST || rt->fl.iif == 0) {
+                if (rt->rt_type == RTN_UNICAST || rt_is_output_route(rt)) {
                         int err = arp_bind_neighbour(&rt->dst);
                         if (err) {
                                 if (net_ratelimit())
@@ -1222,7 +1227,7 @@ restart:
         /* Try to bind route to arp only if it is output
            route or unicast forwarding path.
          */
-        if (rt->rt_type == RTN_UNICAST || rt->fl.iif == 0) {
+        if (rt->rt_type == RTN_UNICAST || rt_is_output_route(rt)) {
                 int err = arp_bind_neighbour(&rt->dst);
                 if (err) {
                         spin_unlock_bh(rt_hash_lock_addr(hash));
@@ -1287,7 +1292,7 @@ void rt_bind_peer(struct rtable *rt, int create)
 {
         struct inet_peer *peer;
 
-        peer = inet_getpeer(rt->rt_dst, create);
+        peer = inet_getpeer_v4(rt->rt_dst, create);
 
         if (peer && cmpxchg(&rt->peer, NULL, peer) != NULL)
                 inet_putpeer(peer);
@@ -1404,7 +1409,7 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
                                 if (rth->fl.fl4_dst != daddr ||
                                     rth->fl.fl4_src != skeys[i] ||
                                     rth->fl.oif != ikeys[k] ||
-                                    rth->fl.iif != 0 ||
+                                    rt_is_input_route(rth) ||
                                     rt_is_expired(rth) ||
                                     !net_eq(dev_net(rth->dst.dev), net)) {
                                         rthp = &rth->dst.rt_next;
@@ -1433,8 +1438,6 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
                                 rt->dst.child           = NULL;
                                 if (rt->dst.dev)
                                         dev_hold(rt->dst.dev);
-                                if (rt->idev)
-                                        in_dev_hold(rt->idev);
                                 rt->dst.obsolete        = -1;
                                 rt->dst.lastuse = jiffies;
                                 rt->dst.path            = &rt->dst;
@@ -1666,7 +1669,7 @@ unsigned short ip_rt_frag_needed(struct net *net, struct iphdr *iph,
                                     rth->rt_dst != daddr ||
                                     rth->rt_src != iph->saddr ||
                                     rth->fl.oif != ikeys[k] ||
-                                    rth->fl.iif != 0 ||
+                                    rt_is_input_route(rth) ||
                                     dst_metric_locked(&rth->dst, RTAX_MTU) ||
                                     !net_eq(dev_net(rth->dst.dev), net) ||
                                     rt_is_expired(rth))
@@ -1686,11 +1689,14 @@ unsigned short ip_rt_frag_needed(struct net *net, struct iphdr *iph,
                                         if (mtu < dst_mtu(&rth->dst)) {
                                                 dst_confirm(&rth->dst);
                                                 if (mtu < ip_rt_min_pmtu) {
+                                                        u32 lock = dst_metric(&rth->dst,
+                                                                              RTAX_LOCK);
                                                         mtu = ip_rt_min_pmtu;
-                                                        rth->dst.metrics[RTAX_LOCK-1] |=
-                                                                (1 << RTAX_MTU);
+                                                        lock |= (1 << RTAX_MTU);
+                                                        dst_metric_set(&rth->dst, RTAX_LOCK,
+                                                                       lock);
                                                 }
-                                                rth->dst.metrics[RTAX_MTU-1] = mtu;
+                                                dst_metric_set(&rth->dst, RTAX_MTU, mtu);
                                                 dst_set_expires(&rth->dst,
                                                         ip_rt_mtu_expires);
                                         }
@@ -1708,10 +1714,11 @@ static void ip_rt_update_pmtu(struct dst_entry *dst, u32 mtu)
         if (dst_mtu(dst) > mtu && mtu >= 68 &&
             !(dst_metric_locked(dst, RTAX_MTU))) {
                 if (mtu < ip_rt_min_pmtu) {
+                        u32 lock = dst_metric(dst, RTAX_LOCK);
                         mtu = ip_rt_min_pmtu;
-                        dst->metrics[RTAX_LOCK-1] |= (1 << RTAX_MTU);
+                        dst_metric_set(dst, RTAX_LOCK, lock | (1 << RTAX_MTU));
                 }
-                dst->metrics[RTAX_MTU-1] = mtu;
+                dst_metric_set(dst, RTAX_MTU, mtu);
                 dst_set_expires(dst, ip_rt_mtu_expires);
                 call_netevent_notifiers(NETEVENT_PMTU_UPDATE, dst);
         }
@@ -1728,33 +1735,13 @@ static void ipv4_dst_destroy(struct dst_entry *dst)
 {
         struct rtable *rt = (struct rtable *) dst;
         struct inet_peer *peer = rt->peer;
-        struct in_device *idev = rt->idev;
 
         if (peer) {
                 rt->peer = NULL;
                 inet_putpeer(peer);
         }
-
-        if (idev) {
-                rt->idev = NULL;
-                in_dev_put(idev);
-        }
 }
 
-static void ipv4_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
-                            int how)
-{
-        struct rtable *rt = (struct rtable *) dst;
-        struct in_device *idev = rt->idev;
-        if (dev != dev_net(dev)->loopback_dev && idev && idev->dev == dev) {
-                struct in_device *loopback_idev =
-                        in_dev_get(dev_net(dev)->loopback_dev);
-                if (loopback_idev) {
-                        rt->idev = loopback_idev;
-                        in_dev_put(idev);
-                }
-        }
-}
 
 static void ipv4_link_failure(struct sk_buff *skb)
 {
@@ -1790,7 +1777,7 @@ void ip_rt_get_source(u8 *addr, struct rtable *rt)
         __be32 src;
         struct fib_result res;
 
-        if (rt->fl.iif == 0)
+        if (rt_is_output_route(rt))
                 src = rt->rt_src;
         else {
                 rcu_read_lock();
@@ -1814,38 +1801,55 @@ static void set_class_tag(struct rtable *rt, u32 tag)
 }
 #endif
 
+static unsigned int ipv4_default_advmss(const struct dst_entry *dst)
+{
+        unsigned int advmss = dst_metric_raw(dst, RTAX_ADVMSS);
+
+        if (advmss == 0) {
+                advmss = max_t(unsigned int, dst->dev->mtu - 40,
+                               ip_rt_min_advmss);
+                if (advmss > 65535 - 40)
+                        advmss = 65535 - 40;
+        }
+        return advmss;
+}
+
+static unsigned int ipv4_default_mtu(const struct dst_entry *dst)
+{
+        unsigned int mtu = dst->dev->mtu;
+
+        if (unlikely(dst_metric_locked(dst, RTAX_MTU))) {
+                const struct rtable *rt = (const struct rtable *) dst;
+
+                if (rt->rt_gateway != rt->rt_dst && mtu > 576)
+                        mtu = 576;
+        }
+
+        if (mtu > IP_MAX_MTU)
+                mtu = IP_MAX_MTU;
+
+        return mtu;
+}
+
 static void rt_set_nexthop(struct rtable *rt, struct fib_result *res, u32 itag)
 {
+        struct dst_entry *dst = &rt->dst;
         struct fib_info *fi = res->fi;
 
         if (fi) {
                 if (FIB_RES_GW(*res) &&
                     FIB_RES_NH(*res).nh_scope == RT_SCOPE_LINK)
                         rt->rt_gateway = FIB_RES_GW(*res);
-                memcpy(rt->dst.metrics, fi->fib_metrics,
-                       sizeof(rt->dst.metrics));
-                if (fi->fib_mtu == 0) {
-                        rt->dst.metrics[RTAX_MTU-1] = rt->dst.dev->mtu;
-                        if (dst_metric_locked(&rt->dst, RTAX_MTU) &&
-                            rt->rt_gateway != rt->rt_dst &&
-                            rt->dst.dev->mtu > 576)
-                                rt->dst.metrics[RTAX_MTU-1] = 576;
-                }
+                dst_import_metrics(dst, fi->fib_metrics);
 #ifdef CONFIG_NET_CLS_ROUTE
-                rt->dst.tclassid = FIB_RES_NH(*res).nh_tclassid;
+                dst->tclassid = FIB_RES_NH(*res).nh_tclassid;
 #endif
-        } else
-                rt->dst.metrics[RTAX_MTU-1]= rt->dst.dev->mtu;
-
-        if (dst_metric(&rt->dst, RTAX_HOPLIMIT) == 0)
-                rt->dst.metrics[RTAX_HOPLIMIT-1] = sysctl_ip_default_ttl;
-        if (dst_mtu(&rt->dst) > IP_MAX_MTU)
-                rt->dst.metrics[RTAX_MTU-1] = IP_MAX_MTU;
-        if (dst_metric(&rt->dst, RTAX_ADVMSS) == 0)
-                rt->dst.metrics[RTAX_ADVMSS-1] = max_t(unsigned int, rt->dst.dev->mtu - 40,
-                                       ip_rt_min_advmss);
-        if (dst_metric(&rt->dst, RTAX_ADVMSS) > 65535 - 40)
-                rt->dst.metrics[RTAX_ADVMSS-1] = 65535 - 40;
+        }
+
+        if (dst_mtu(dst) > IP_MAX_MTU)
+                dst_metric_set(dst, RTAX_MTU, IP_MAX_MTU);
+        if (dst_metric_raw(dst, RTAX_ADVMSS) > 65535 - 40)
+                dst_metric_set(dst, RTAX_ADVMSS, 65535 - 40);
 
 #ifdef CONFIG_NET_CLS_ROUTE
 #ifdef CONFIG_IP_MULTIPLE_TABLES
@@ -1910,7 +1914,6 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
         rth->fl.iif     = dev->ifindex;
         rth->dst.dev    = init_net.loopback_dev;
         dev_hold(rth->dst.dev);
-        rth->idev       = in_dev_get(rth->dst.dev);
         rth->fl.oif     = 0;
         rth->rt_gateway = daddr;
         rth->rt_spec_dst= spec_dst;
@@ -2050,7 +2053,6 @@ static int __mkroute_input(struct sk_buff *skb,
                 rth->fl.iif     = in_dev->dev->ifindex;
         rth->dst.dev    = (out_dev)->dev;
         dev_hold(rth->dst.dev);
-        rth->idev       = in_dev_get(rth->dst.dev);
         rth->fl.oif     = 0;
         rth->rt_spec_dst= spec_dst;
 
@@ -2111,12 +2113,10 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 {
         struct fib_result res;
         struct in_device *in_dev = __in_dev_get_rcu(dev);
-        struct flowi fl = { .nl_u = { .ip4_u =
-                                      { .daddr = daddr,
-                                        .saddr = saddr,
-                                        .tos = tos,
-                                        .scope = RT_SCOPE_UNIVERSE,
-                                      } },
+        struct flowi fl = { .fl4_dst    = daddr,
+                            .fl4_src    = saddr,
+                            .fl4_tos    = tos,
+                            .fl4_scope  = RT_SCOPE_UNIVERSE,
                             .mark = skb->mark,
                             .iif = dev->ifindex };
         unsigned        flags = 0;
@@ -2231,7 +2231,6 @@ local_input:
         rth->fl.iif     = dev->ifindex;
         rth->dst.dev    = net->loopback_dev;
         dev_hold(rth->dst.dev);
-        rth->idev       = in_dev_get(rth->dst.dev);
         rth->rt_gateway = daddr;
         rth->rt_spec_dst= spec_dst;
         rth->dst.input= ip_local_deliver;
@@ -2417,9 +2416,6 @@ static int __mkroute_output(struct rtable **result,
         if (!rth)
                 return -ENOBUFS;
 
-        in_dev_hold(in_dev);
-        rth->idev = in_dev;
-
         atomic_set(&rth->dst.__refcnt, 1);
         rth->dst.flags= DST_HOST;
         if (IN_DEV_CONF_GET(in_dev, NOXFRM))
@@ -2506,14 +2502,11 @@ static int ip_route_output_slow(struct net *net, struct rtable **rp,
                                 const struct flowi *oldflp)
 {
         u32 tos = RT_FL_TOS(oldflp);
-        struct flowi fl = { .nl_u = { .ip4_u =
-                                      { .daddr = oldflp->fl4_dst,
-                                        .saddr = oldflp->fl4_src,
-                                        .tos = tos & IPTOS_RT_MASK,
-                                        .scope = ((tos & RTO_ONLINK) ?
-                                                  RT_SCOPE_LINK :
-                                                  RT_SCOPE_UNIVERSE),
-                                      } },
+        struct flowi fl = { .fl4_dst = oldflp->fl4_dst,
+                            .fl4_src = oldflp->fl4_src,
+                            .fl4_tos = tos & IPTOS_RT_MASK,
+                            .fl4_scope = ((tos & RTO_ONLINK) ?
+                                          RT_SCOPE_LINK : RT_SCOPE_UNIVERSE),
                             .mark = oldflp->mark,
                             .iif = net->loopback_dev->ifindex,
                             .oif = oldflp->oif };
@@ -2695,7 +2688,7 @@ int __ip_route_output_key(struct net *net, struct rtable **rp,
                 rth = rcu_dereference_bh(rth->dst.rt_next)) {
                 if (rth->fl.fl4_dst == flp->fl4_dst &&
                     rth->fl.fl4_src == flp->fl4_src &&
-                    rth->fl.iif == 0 &&
+                    rt_is_output_route(rth) &&
                     rth->fl.oif == flp->oif &&
                     rth->fl.mark == flp->mark &&
                     !((rth->fl.fl4_tos ^ flp->fl4_tos) &
@@ -2751,7 +2744,7 @@ static int ipv4_dst_blackhole(struct net *net, struct rtable **rp, struct flowi
                 new->__use = 1;
                 new->input = dst_discard;
                 new->output = dst_discard;
-                memcpy(new->metrics, ort->dst.metrics, RTAX_MAX*sizeof(u32));
+                dst_copy_metrics(new, &ort->dst);
 
                 new->dev = ort->dst.dev;
                 if (new->dev)
@@ -2759,9 +2752,6 @@ static int ipv4_dst_blackhole(struct net *net, struct rtable **rp, struct flowi
 
                 rt->fl = ort->fl;
 
-                rt->idev = ort->idev;
-                if (rt->idev)
-                        in_dev_hold(rt->idev);
                 rt->rt_genid = rt_genid(net);
                 rt->rt_flags = ort->rt_flags;
                 rt->rt_type = ort->rt_type;
@@ -2853,7 +2843,7 @@ static int rt_fill_info(struct net *net,
         if (rt->dst.tclassid)
                 NLA_PUT_U32(skb, RTA_FLOW, rt->dst.tclassid);
 #endif
-        if (rt->fl.iif)
+        if (rt_is_input_route(rt))
                 NLA_PUT_BE32(skb, RTA_PREFSRC, rt->rt_spec_dst);
         else if (rt->rt_src != rt->fl.fl4_src)
                 NLA_PUT_BE32(skb, RTA_PREFSRC, rt->rt_src);
@@ -2861,7 +2851,7 @@ static int rt_fill_info(struct net *net,
         if (rt->rt_dst != rt->rt_gateway)
                 NLA_PUT_BE32(skb, RTA_GATEWAY, rt->rt_gateway);
 
-        if (rtnetlink_put_metrics(skb, rt->dst.metrics) < 0)
+        if (rtnetlink_put_metrics(skb, dst_metrics_ptr(&rt->dst)) < 0)
                 goto nla_put_failure;
 
         if (rt->fl.mark)
@@ -2878,7 +2868,7 @@ static int rt_fill_info(struct net *net,
                 }
         }
 
-        if (rt->fl.iif) {
+        if (rt_is_input_route(rt)) {
 #ifdef CONFIG_IP_MROUTE
                 __be32 dst = rt->rt_dst;
 
@@ -2973,13 +2963,9 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
                         err = -rt->dst.error;
         } else {
                 struct flowi fl = {
-                        .nl_u = {
-                                .ip4_u = {
-                                        .daddr = dst,
-                                        .saddr = src,
-                                        .tos = rtm->rtm_tos,
-                                },
-                        },
+                        .fl4_dst = dst,
+                        .fl4_src = src,
+                        .fl4_tos = rtm->rtm_tos,
                         .oif = tb[RTA_OIF] ? nla_get_u32(tb[RTA_OIF]) : 0,
                         .mark = mark,
                 };
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index 650cace2180d..47519205a014 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -346,17 +346,14 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
          */
         {
                 struct flowi fl = { .mark = sk->sk_mark,
-                                    .nl_u = { .ip4_u =
-                                              { .daddr = ((opt && opt->srr) ?
-                                                          opt->faddr :
-                                                          ireq->rmt_addr),
-                                                .saddr = ireq->loc_addr,
-                                                .tos = RT_CONN_FLAGS(sk) } },
+                                    .fl4_dst = ((opt && opt->srr) ?
+                                                opt->faddr : ireq->rmt_addr),
+                                    .fl4_src = ireq->loc_addr,
+                                    .fl4_tos = RT_CONN_FLAGS(sk),
                                     .proto = IPPROTO_TCP,
                                     .flags = inet_sk_flowi_flags(sk),
-                                    .uli_u = { .ports =
-                                               { .sport = th->dest,
-                                                 .dport = th->source } } };
+                                    .fl_ip_sport = th->dest,
+                                    .fl_ip_dport = th->source };
                 security_req_classify_flow(req, &fl);
                 if (ip_route_output_key(sock_net(sk), &rt, &fl)) {
                         reqsk_free(req);
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 1b4ec21497a4..1a456652086b 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -28,6 +28,8 @@ static int ip_local_port_range_min[] = { 1, 1 };
 static int ip_local_port_range_max[] = { 65535, 65535 };
 static int tcp_adv_win_scale_min = -31;
 static int tcp_adv_win_scale_max = 31;
+static int ip_ttl_min = 1;
+static int ip_ttl_max = 255;
 
 /* Update system visible IP port range */
 static void set_local_port_range(int range[2])
@@ -155,8 +157,9 @@ static struct ctl_table ipv4_table[] = {
                 .data           = &sysctl_ip_default_ttl,
                 .maxlen         = sizeof(int),
                 .mode           = 0644,
-                .proc_handler   = ipv4_doint_and_flush,
-                .extra2         = &init_net,
+                .proc_handler   = proc_dointvec_minmax,
+                .extra1         = &ip_ttl_min,
+                .extra2         = &ip_ttl_max,
         },
         {
                 .procname       = "ip_no_pmtu_disc",
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index f15c36a706ec..6c11eece262c 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1193,7 +1193,7 @@ void tcp_cleanup_rbuf(struct sock *sk, int copied)
         struct sk_buff *skb = skb_peek(&sk->sk_receive_queue);
 
         WARN(skb && !before(tp->copied_seq, TCP_SKB_CB(skb)->end_seq),
-             KERN_INFO "cleanup rbuf bug: copied %X seq %X rcvnxt %X\n",
+             "cleanup rbuf bug: copied %X seq %X rcvnxt %X\n",
              tp->copied_seq, TCP_SKB_CB(skb)->end_seq, tp->rcv_nxt);
 #endif
 
@@ -1477,10 +1477,9 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
                          * shouldn't happen.
                          */
                         if (WARN(before(*seq, TCP_SKB_CB(skb)->seq),
-                             KERN_INFO "recvmsg bug: copied %X "
-                                       "seq %X rcvnxt %X fl %X\n", *seq,
-                                       TCP_SKB_CB(skb)->seq, tp->rcv_nxt,
-                                       flags))
+                                 "recvmsg bug: copied %X seq %X rcvnxt %X fl %X\n",
+                                 *seq, TCP_SKB_CB(skb)->seq, tp->rcv_nxt,
+                                 flags))
                                 break;
 
                         offset = *seq - TCP_SKB_CB(skb)->seq;
@@ -1490,10 +1489,9 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
                                 goto found_ok_skb;
                         if (tcp_hdr(skb)->fin)
                                 goto found_fin_ok;
-                        WARN(!(flags & MSG_PEEK), KERN_INFO "recvmsg bug 2: "
-                                        "copied %X seq %X rcvnxt %X fl %X\n",
-                                        *seq, TCP_SKB_CB(skb)->seq,
-                                        tp->rcv_nxt, flags);
+                        WARN(!(flags & MSG_PEEK),
+                             "recvmsg bug 2: copied %X seq %X rcvnxt %X fl %X\n",
+                             *seq, TCP_SKB_CB(skb)->seq, tp->rcv_nxt, flags);
                 }
 
                 /* Well, if we have backlog, try to process it now yet. */
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 6d8ab1c4efc3..824e8c8a17ad 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -734,7 +734,7 @@ void tcp_update_metrics(struct sock *sk)
                          * Reset our results.
                          */
                         if (!(dst_metric_locked(dst, RTAX_RTT)))
-                                dst->metrics[RTAX_RTT - 1] = 0;
+                                dst_metric_set(dst, RTAX_RTT, 0);
                         return;
                 }
 
@@ -776,34 +776,38 @@ void tcp_update_metrics(struct sock *sk)
                         if (dst_metric(dst, RTAX_SSTHRESH) &&
                             !dst_metric_locked(dst, RTAX_SSTHRESH) &&
                             (tp->snd_cwnd >> 1) > dst_metric(dst, RTAX_SSTHRESH))
-                                dst->metrics[RTAX_SSTHRESH-1] = tp->snd_cwnd >> 1;
+                                dst_metric_set(dst, RTAX_SSTHRESH, tp->snd_cwnd >> 1);
                         if (!dst_metric_locked(dst, RTAX_CWND) &&
                             tp->snd_cwnd > dst_metric(dst, RTAX_CWND))
-                                dst->metrics[RTAX_CWND - 1] = tp->snd_cwnd;
+                                dst_metric_set(dst, RTAX_CWND, tp->snd_cwnd);
                 } else if (tp->snd_cwnd > tp->snd_ssthresh &&
                            icsk->icsk_ca_state == TCP_CA_Open) {
                         /* Cong. avoidance phase, cwnd is reliable. */
                         if (!dst_metric_locked(dst, RTAX_SSTHRESH))
-                                dst->metrics[RTAX_SSTHRESH-1] =
-                                        max(tp->snd_cwnd >> 1, tp->snd_ssthresh);
+                                dst_metric_set(dst, RTAX_SSTHRESH,
+                                               max(tp->snd_cwnd >> 1, tp->snd_ssthresh));
                         if (!dst_metric_locked(dst, RTAX_CWND))
-                                dst->metrics[RTAX_CWND-1] = (dst_metric(dst, RTAX_CWND) + tp->snd_cwnd) >> 1;
+                                dst_metric_set(dst, RTAX_CWND,
+                                               (dst_metric(dst, RTAX_CWND) +
+                                                tp->snd_cwnd) >> 1);
                 } else {
                         /* Else slow start did not finish, cwnd is non-sense,
                            ssthresh may be also invalid.
                          */
                         if (!dst_metric_locked(dst, RTAX_CWND))
-                                dst->metrics[RTAX_CWND-1] = (dst_metric(dst, RTAX_CWND) + tp->snd_ssthresh) >> 1;
+                                dst_metric_set(dst, RTAX_CWND,
+                                               (dst_metric(dst, RTAX_CWND) +
+                                                tp->snd_ssthresh) >> 1);
                         if (dst_metric(dst, RTAX_SSTHRESH) &&
                             !dst_metric_locked(dst, RTAX_SSTHRESH) &&
                             tp->snd_ssthresh > dst_metric(dst, RTAX_SSTHRESH))
-                                dst->metrics[RTAX_SSTHRESH-1] = tp->snd_ssthresh;
+                                dst_metric_set(dst, RTAX_SSTHRESH, tp->snd_ssthresh);
                 }
 
                 if (!dst_metric_locked(dst, RTAX_REORDERING)) {
                         if (dst_metric(dst, RTAX_REORDERING) < tp->reordering &&
                             tp->reordering != sysctl_tcp_reordering)
-                                dst->metrics[RTAX_REORDERING-1] = tp->reordering;
+                                dst_metric_set(dst, RTAX_REORDERING, tp->reordering);
                 }
         }
 }
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index e13da6de1fc7..f4011027543d 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1210,12 +1210,6 @@ static const struct tcp_request_sock_ops tcp_request_sock_ipv4_ops = {
 };
 #endif
 
-static struct timewait_sock_ops tcp_timewait_sock_ops = {
-        .twsk_obj_size  = sizeof(struct tcp_timewait_sock),
-        .twsk_unique    = tcp_twsk_unique,
-        .twsk_destructor= tcp_twsk_destructor,
-};
-
 int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 {
         struct tcp_extend_values tmp_ext;
@@ -1347,7 +1341,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
                     tcp_death_row.sysctl_tw_recycle &&
                     (dst = inet_csk_route_req(sk, req)) != NULL &&
                     (peer = rt_get_peer((struct rtable *)dst)) != NULL &&
-                    peer->v4daddr == saddr) {
+                    peer->daddr.a4 == saddr) {
                         inet_peer_refcheck(peer);
                         if ((u32)get_seconds() - peer->tcp_ts_stamp < TCP_PAWS_MSL &&
                             (s32)(peer->tcp_ts - req->ts_recent) >
@@ -1442,7 +1436,7 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 
         tcp_mtup_init(newsk);
         tcp_sync_mss(newsk, dst_mtu(dst));
-        newtp->advmss = dst_metric(dst, RTAX_ADVMSS);
+        newtp->advmss = dst_metric_advmss(dst);
         if (tcp_sk(sk)->rx_opt.user_mss &&
             tcp_sk(sk)->rx_opt.user_mss < newtp->advmss)
                 newtp->advmss = tcp_sk(sk)->rx_opt.user_mss;
@@ -1763,64 +1757,40 @@ do_time_wait:
         goto discard_it;
 }
 
-/* VJ's idea. Save last timestamp seen from this destination
- * and hold it at least for normal timewait interval to use for duplicate
- * segment detection in subsequent connections, before they enter synchronized
- * state.
- */
-
-int tcp_v4_remember_stamp(struct sock *sk)
+struct inet_peer *tcp_v4_get_peer(struct sock *sk, bool *release_it)
 {
+        struct rtable *rt = (struct rtable *) __sk_dst_get(sk);
         struct inet_sock *inet = inet_sk(sk);
-        struct tcp_sock *tp = tcp_sk(sk);
-        struct rtable *rt = (struct rtable *)__sk_dst_get(sk);
-        struct inet_peer *peer = NULL;
-        int release_it = 0;
+        struct inet_peer *peer;
 
         if (!rt || rt->rt_dst != inet->inet_daddr) {
-                peer = inet_getpeer(inet->inet_daddr, 1);
-                release_it = 1;
+                peer = inet_getpeer_v4(inet->inet_daddr, 1);
+                *release_it = true;
         } else {
                 if (!rt->peer)
                         rt_bind_peer(rt, 1);
                 peer = rt->peer;
+                *release_it = false;
         }
 
-        if (peer) {
-                if ((s32)(peer->tcp_ts - tp->rx_opt.ts_recent) <= 0 ||
-                    ((u32)get_seconds() - peer->tcp_ts_stamp > TCP_PAWS_MSL &&
-                     peer->tcp_ts_stamp <= (u32)tp->rx_opt.ts_recent_stamp)) {
-                        peer->tcp_ts_stamp = (u32)tp->rx_opt.ts_recent_stamp;
-                        peer->tcp_ts = tp->rx_opt.ts_recent;
-                }
-                if (release_it)
-                        inet_putpeer(peer);
-                return 1;
-        }
-
-        return 0;
+        return peer;
 }
-EXPORT_SYMBOL(tcp_v4_remember_stamp);
+EXPORT_SYMBOL(tcp_v4_get_peer);
 
-int tcp_v4_tw_remember_stamp(struct inet_timewait_sock *tw)
+void *tcp_v4_tw_get_peer(struct sock *sk)
 {
-        struct inet_peer *peer = inet_getpeer(tw->tw_daddr, 1);
-
-        if (peer) {
-                const struct tcp_timewait_sock *tcptw = tcp_twsk((struct sock *)tw);
-
-                if ((s32)(peer->tcp_ts - tcptw->tw_ts_recent) <= 0 ||
-                    ((u32)get_seconds() - peer->tcp_ts_stamp > TCP_PAWS_MSL &&
-                     peer->tcp_ts_stamp <= (u32)tcptw->tw_ts_recent_stamp)) {
-                        peer->tcp_ts_stamp = (u32)tcptw->tw_ts_recent_stamp;
-                        peer->tcp_ts       = tcptw->tw_ts_recent;
-                }
-                inet_putpeer(peer);
-                return 1;
-        }
+        struct inet_timewait_sock *tw = inet_twsk(sk);
 
-        return 0;
+        return inet_getpeer_v4(tw->tw_daddr, 1);
 }
+EXPORT_SYMBOL(tcp_v4_tw_get_peer);
+
+static struct timewait_sock_ops tcp_timewait_sock_ops = {
+        .twsk_obj_size  = sizeof(struct tcp_timewait_sock),
+        .twsk_unique    = tcp_twsk_unique,
+        .twsk_destructor= tcp_twsk_destructor,
+        .twsk_getpeer   = tcp_v4_tw_get_peer,
+};
 
 const struct inet_connection_sock_af_ops ipv4_specific = {
         .queue_xmit        = ip_queue_xmit,
@@ -1828,7 +1798,7 @@ const struct inet_connection_sock_af_ops ipv4_specific = {
         .rebuild_header    = inet_sk_rebuild_header,
         .conn_request      = tcp_v4_conn_request,
         .syn_recv_sock     = tcp_v4_syn_recv_sock,
-        .remember_stamp    = tcp_v4_remember_stamp,
+        .get_peer          = tcp_v4_get_peer,
         .net_header_len    = sizeof(struct iphdr),
         .setsockopt        = ip_setsockopt,
         .getsockopt        = ip_getsockopt,
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index a66735f75963..80b1f80759ab 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -49,6 +49,56 @@ struct inet_timewait_death_row tcp_death_row = {
 };
 EXPORT_SYMBOL_GPL(tcp_death_row);
 
+/* VJ's idea. Save last timestamp seen from this destination
+ * and hold it at least for normal timewait interval to use for duplicate
+ * segment detection in subsequent connections, before they enter synchronized
+ * state.
+ */
+
+static int tcp_remember_stamp(struct sock *sk)
+{
+        const struct inet_connection_sock *icsk = inet_csk(sk);
+        struct tcp_sock *tp = tcp_sk(sk);
+        struct inet_peer *peer;
+        bool release_it;
+
+        peer = icsk->icsk_af_ops->get_peer(sk, &release_it);
+        if (peer) {
+                if ((s32)(peer->tcp_ts - tp->rx_opt.ts_recent) <= 0 ||
+                    ((u32)get_seconds() - peer->tcp_ts_stamp > TCP_PAWS_MSL &&
+                     peer->tcp_ts_stamp <= (u32)tp->rx_opt.ts_recent_stamp)) {
+                        peer->tcp_ts_stamp = (u32)tp->rx_opt.ts_recent_stamp;
+                        peer->tcp_ts = tp->rx_opt.ts_recent;
+                }
+                if (release_it)
+                        inet_putpeer(peer);
+                return 1;
+        }
+
+        return 0;
+}
+
+static int tcp_tw_remember_stamp(struct inet_timewait_sock *tw)
+{
+        struct sock *sk = (struct sock *) tw;
+        struct inet_peer *peer;
+
+        peer = twsk_getpeer(sk);
+        if (peer) {
+                const struct tcp_timewait_sock *tcptw = tcp_twsk(sk);
+
+                if ((s32)(peer->tcp_ts - tcptw->tw_ts_recent) <= 0 ||
+                    ((u32)get_seconds() - peer->tcp_ts_stamp > TCP_PAWS_MSL &&
+                     peer->tcp_ts_stamp <= (u32)tcptw->tw_ts_recent_stamp)) {
+                        peer->tcp_ts_stamp = (u32)tcptw->tw_ts_recent_stamp;
+                        peer->tcp_ts       = tcptw->tw_ts_recent;
+                }
+                inet_putpeer(peer);
+                return 1;
+        }
+        return 0;
+}
+
 static __inline__ int tcp_in_window(u32 seq, u32 end_seq, u32 s_win, u32 e_win)
 {
         if (seq == s_win)
@@ -149,14 +199,9 @@ kill_with_rst:
                         tcptw->tw_ts_recent       = tmp_opt.rcv_tsval;
                 }
 
-                /* I am shamed, but failed to make it more elegant.
-                 * Yes, it is direct reference to IP, which is impossible
-                 * to generalize to IPv6. Taking into account that IPv6
-                 * do not understand recycling in any case, it not
-                 * a big problem in practice. --ANK */
-                if (tw->tw_family == AF_INET &&
-                    tcp_death_row.sysctl_tw_recycle && tcptw->tw_ts_recent_stamp &&
-                    tcp_v4_tw_remember_stamp(tw))
+                if (tcp_death_row.sysctl_tw_recycle &&
+                    tcptw->tw_ts_recent_stamp &&
+                    tcp_tw_remember_stamp(tw))
                         inet_twsk_schedule(tw, &tcp_death_row, tw->tw_timeout,
                                            TCP_TIMEWAIT_LEN);
                 else
@@ -274,7 +319,7 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
         int recycle_ok = 0;
 
         if (tcp_death_row.sysctl_tw_recycle && tp->rx_opt.ts_recent_stamp)
-                recycle_ok = icsk->icsk_af_ops->remember_stamp(sk);
+                recycle_ok = tcp_remember_stamp(sk);
 
         if (tcp_death_row.tw_count < tcp_death_row.sysctl_max_tw_buckets)
                 tw = inet_twsk_alloc(sk, state);
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 61c2463e2753..2d390669d406 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -55,7 +55,7 @@ int sysctl_tcp_workaround_signed_windows __read_mostly = 0;
 int sysctl_tcp_tso_win_divisor __read_mostly = 3;
 
 int sysctl_tcp_mtu_probing __read_mostly = 0;
-int sysctl_tcp_base_mss __read_mostly = 512;
+int sysctl_tcp_base_mss __read_mostly = TCP_BASE_MSS;
 
 /* By default, RFC2861 behavior.  */
 int sysctl_tcp_slow_start_after_idle __read_mostly = 1;
@@ -119,9 +119,13 @@ static __u16 tcp_advertise_mss(struct sock *sk)
         struct dst_entry *dst = __sk_dst_get(sk);
         int mss = tp->advmss;
 
-        if (dst && dst_metric(dst, RTAX_ADVMSS) < mss) {
-                mss = dst_metric(dst, RTAX_ADVMSS);
-                tp->advmss = mss;
+        if (dst) {
+                unsigned int metric = dst_metric_advmss(dst);
+
+                if (metric < mss) {
+                        mss = metric;
+                        tp->advmss = mss;
+                }
         }
 
         return (__u16)mss;
@@ -824,8 +828,11 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
                                                            &md5);
         tcp_header_size = tcp_options_size + sizeof(struct tcphdr);
 
-        if (tcp_packets_in_flight(tp) == 0)
+        if (tcp_packets_in_flight(tp) == 0) {
                 tcp_ca_event(sk, CA_EVENT_TX_START);
+                skb->ooo_okay = 1;
+        } else
+                skb->ooo_okay = 0;
 
         skb_push(skb, tcp_header_size);
         skb_reset_transport_header(skb);
@@ -2419,7 +2426,7 @@ struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst,
 
         skb_dst_set(skb, dst_clone(dst));
 
-        mss = dst_metric(dst, RTAX_ADVMSS);
+        mss = dst_metric_advmss(dst);
         if (tp->rx_opt.user_mss && tp->rx_opt.user_mss < mss)
                 mss = tp->rx_opt.user_mss;
 
@@ -2553,7 +2560,7 @@ static void tcp_connect_init(struct sock *sk)
 
         if (!tp->window_clamp)
                 tp->window_clamp = dst_metric(dst, RTAX_WINDOW);
-        tp->advmss = dst_metric(dst, RTAX_ADVMSS);
+        tp->advmss = dst_metric_advmss(dst);
         if (tp->rx_opt.user_mss && tp->rx_opt.user_mss < tp->advmss)
                 tp->advmss = tp->rx_opt.user_mss;
 
@@ -2596,6 +2603,7 @@ int tcp_connect(struct sock *sk)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         struct sk_buff *buff;
+        int err;
 
         tcp_connect_init(sk);
 
@@ -2618,7 +2626,9 @@ int tcp_connect(struct sock *sk)
         sk->sk_wmem_queued += buff->truesize;
         sk_mem_charge(sk, buff->truesize);
         tp->packets_out += tcp_skb_pcount(buff);
-        tcp_transmit_skb(sk, buff, 1, sk->sk_allocation);
+        err = tcp_transmit_skb(sk, buff, 1, sk->sk_allocation);
+        if (err == -ECONNREFUSED)
+                return err;
 
         /* We change tp->snd_nxt after the tcp_transmit_skb() call
          * in order to make this packet get counted in tcpOutSegs.
diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c
index 6211e2114173..85ee7eb7e38e 100644
--- a/net/ipv4/tcp_probe.c
+++ b/net/ipv4/tcp_probe.c
@@ -154,7 +154,7 @@ static int tcpprobe_sprint(char *tbuf, int n)
         struct timespec tv
                 = ktime_to_timespec(ktime_sub(p->tstamp, tcp_probe.start));
 
-        return snprintf(tbuf, n,
+        return scnprintf(tbuf, n,
                         "%lu.%09lu %pI4:%u %pI4:%u %d %#x %#x %u %u %u %u\n",
                         (unsigned long) tv.tv_sec,
                         (unsigned long) tv.tv_nsec,
@@ -174,7 +174,7 @@ static ssize_t tcpprobe_read(struct file *file, char __user *buf,
                 return -EINVAL;
 
         while (cnt < len) {
-                char tbuf[128];
+                char tbuf[164];
                 int width;
 
                 /* Wait for data in buffer */
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 2d3ded4d0786..8157b17959ee 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -430,7 +430,7 @@ begin:
 
         if (result) {
 exact_match:
-                if (unlikely(!atomic_inc_not_zero(&result->sk_refcnt)))
+                if (unlikely(!atomic_inc_not_zero_hint(&result->sk_refcnt, 2)))
                         result = NULL;
                 else if (unlikely(compute_score2(result, net, saddr, sport,
                                   daddr, hnum, dif) < badness)) {
@@ -500,7 +500,7 @@ begin:
                 goto begin;
 
         if (result) {
-                if (unlikely(!atomic_inc_not_zero(&result->sk_refcnt)))
+                if (unlikely(!atomic_inc_not_zero_hint(&result->sk_refcnt, 2)))
                         result = NULL;
                 else if (unlikely(compute_score(result, net, saddr, hnum, sport,
                                   daddr, dport, dif) < badness)) {
@@ -890,15 +890,13 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
         if (rt == NULL) {
                 struct flowi fl = { .oif = ipc.oif,
                                     .mark = sk->sk_mark,
-                                    .nl_u = { .ip4_u =
-                                              { .daddr = faddr,
-                                                .saddr = saddr,
-                                                .tos = tos } },
+                                    .fl4_dst = faddr,
+                                    .fl4_src = saddr,
+                                    .fl4_tos = tos,
                                     .proto = sk->sk_protocol,
                                     .flags = inet_sk_flowi_flags(sk),
-                                    .uli_u = { .ports =
-                                               { .sport = inet->inet_sport,
-                                                 .dport = dport } } };
+                                    .fl_ip_sport = inet->inet_sport,
+                                    .fl_ip_dport = dport };
                 struct net *net = sock_net(sk);
 
                 security_sk_classify_flow(sk, &fl);
@@ -2229,7 +2227,7 @@ struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb, int features)
         /* Do software UFO. Complete and fill in the UDP checksum as HW cannot
          * do checksum of UDP packets sent as multiple IP fragments.
          */
-        offset = skb->csum_start - skb_headroom(skb);
+        offset = skb_checksum_start_offset(skb);
         csum = skb_checksum(skb, offset, skb->len - offset, 0);
         offset += skb->csum_offset;
         *(__sum16 *)(skb->data + offset) = csum_fold(csum);
diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index 6f368413eb0e..534972e114ac 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -56,7 +56,7 @@ static int xfrm4_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
                 0 : (XFRM_MODE_SKB_CB(skb)->frag_off & htons(IP_DF));
         ip_select_ident(top_iph, dst->child, NULL);
 
-        top_iph->ttl = dst_metric(dst->child, RTAX_HOPLIMIT);
+        top_iph->ttl = ip4_dst_hoplimit(dst->child);
 
         top_iph->saddr = x->props.saddr.a4;
         top_iph->daddr = x->id.daddr.a4;
diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index 4464f3bff6a7..b057d40addec 100644
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -11,6 +11,7 @@
 #include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/inetdevice.h>
+#include <linux/if_tunnel.h>
 #include <net/dst.h>
 #include <net/xfrm.h>
 #include <net/ip.h>
@@ -22,12 +23,8 @@ static struct dst_entry *xfrm4_dst_lookup(struct net *net, int tos,
                                           xfrm_address_t *daddr)
 {
         struct flowi fl = {
-                .nl_u = {
-                        .ip4_u = {
-                                .tos = tos,
-                                .daddr = daddr->a4,
-                        },
-                },
+                .fl4_dst = daddr->a4,
+                .fl4_tos = tos,
         };
         struct dst_entry *dst;
         struct rtable *rt;
@@ -80,10 +77,6 @@ static int xfrm4_fill_dst(struct xfrm_dst *xdst, struct net_device *dev,
         xdst->u.dst.dev = dev;
         dev_hold(dev);
 
-        xdst->u.rt.idev = in_dev_get(dev);
-        if (!xdst->u.rt.idev)
-                return -ENODEV;
-
         xdst->u.rt.peer = rt->peer;
         if (rt->peer)
                 atomic_inc(&rt->peer->refcnt);
@@ -158,6 +151,20 @@ _decode_session4(struct sk_buff *skb, struct flowi *fl, int reverse)
                                 fl->fl_ipsec_spi = htonl(ntohs(ipcomp_hdr[1]));
                         }
                         break;
+
+                case IPPROTO_GRE:
+                        if (pskb_may_pull(skb, xprth + 12 - skb->data)) {
+                                __be16 *greflags = (__be16 *)xprth;
+                                __be32 *gre_hdr = (__be32 *)xprth;
+
+                                if (greflags[0] & GRE_KEY) {
+                                        if (greflags[0] & GRE_CSUM)
+                                                gre_hdr++;
+                                        fl->fl_gre_key = gre_hdr[1];
+                                }
+                        }
+                        break;
+
                 default:
                         fl->fl_ipsec_spi = 0;
                         break;
@@ -189,8 +196,6 @@ static void xfrm4_dst_destroy(struct dst_entry *dst)
 {
         struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
 
-        if (likely(xdst->u.rt.idev))
-                in_dev_put(xdst->u.rt.idev);
         if (likely(xdst->u.rt.peer))
                 inet_putpeer(xdst->u.rt.peer);
         xfrm_dst_destroy(xdst);
@@ -199,27 +204,9 @@ static void xfrm4_dst_destroy(struct dst_entry *dst)
 static void xfrm4_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
                              int unregister)
 {
-        struct xfrm_dst *xdst;
-
         if (!unregister)
                 return;
 
-        xdst = (struct xfrm_dst *)dst;
-        if (xdst->u.rt.idev->dev == dev) {
-                struct in_device *loopback_idev =
-                        in_dev_get(dev_net(dev)->loopback_dev);
-                BUG_ON(!loopback_idev);
-
-                do {
-                        in_dev_put(xdst->u.rt.idev);
-                        xdst->u.rt.idev = loopback_idev;
-                        in_dev_hold(loopback_idev);
-                        xdst = (struct xfrm_dst *)xdst->u.dst.child;
-                } while (xdst->u.dst.xfrm);
-
-                __in_dev_put(loopback_idev);
-        }
-
         xfrm_dst_ifdown(dst, dev);
 }
 
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 848b35591042..99d1888af363 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3838,6 +3838,15 @@ static inline void ipv6_store_devconf(struct ipv6_devconf *cnf,
         array[DEVCONF_FORCE_TLLAO] = cnf->force_tllao;
 }
 
+static inline size_t inet6_ifla6_size(void)
+{
+        return nla_total_size(4) /* IFLA_INET6_FLAGS */
+             + nla_total_size(sizeof(struct ifla_cacheinfo))
+             + nla_total_size(DEVCONF_MAX * 4) /* IFLA_INET6_CONF */
+             + nla_total_size(IPSTATS_MIB_MAX * 8) /* IFLA_INET6_STATS */
+             + nla_total_size(ICMP6_MIB_MAX * 8); /* IFLA_INET6_ICMP6STATS */
+}
+
 static inline size_t inet6_if_nlmsg_size(void)
 {
         return NLMSG_ALIGN(sizeof(struct ifinfomsg))
@@ -3845,13 +3854,7 @@ static inline size_t inet6_if_nlmsg_size(void)
                + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
                + nla_total_size(4) /* IFLA_MTU */
                + nla_total_size(4) /* IFLA_LINK */
-               + nla_total_size( /* IFLA_PROTINFO */
-                        nla_total_size(4) /* IFLA_INET6_FLAGS */
-                        + nla_total_size(sizeof(struct ifla_cacheinfo))
-                        + nla_total_size(DEVCONF_MAX * 4) /* IFLA_INET6_CONF */
-                        + nla_total_size(IPSTATS_MIB_MAX * 8) /* IFLA_INET6_STATS */
-                        + nla_total_size(ICMP6_MIB_MAX * 8) /* IFLA_INET6_ICMP6STATS */
-                 );
+               + nla_total_size(inet6_ifla6_size()); /* IFLA_PROTINFO */
 }
 
 static inline void __snmp6_fill_stats(u64 *stats, void __percpu **mib,
@@ -3898,15 +3901,70 @@ static void snmp6_fill_stats(u64 *stats, struct inet6_dev *idev, int attrtype,
         }
 }
 
+static int inet6_fill_ifla6_attrs(struct sk_buff *skb, struct inet6_dev *idev)
+{
+        struct nlattr *nla;
+        struct ifla_cacheinfo ci;
+
+        NLA_PUT_U32(skb, IFLA_INET6_FLAGS, idev->if_flags);
+
+        ci.max_reasm_len = IPV6_MAXPLEN;
+        ci.tstamp = cstamp_delta(idev->tstamp);
+        ci.reachable_time = jiffies_to_msecs(idev->nd_parms->reachable_time);
+        ci.retrans_time = jiffies_to_msecs(idev->nd_parms->retrans_time);
+        NLA_PUT(skb, IFLA_INET6_CACHEINFO, sizeof(ci), &ci);
+
+        nla = nla_reserve(skb, IFLA_INET6_CONF, DEVCONF_MAX * sizeof(s32));
+        if (nla == NULL)
+                goto nla_put_failure;
+        ipv6_store_devconf(&idev->cnf, nla_data(nla), nla_len(nla));
+
+        /* XXX - MC not implemented */
+
+        nla = nla_reserve(skb, IFLA_INET6_STATS, IPSTATS_MIB_MAX * sizeof(u64));
+        if (nla == NULL)
+                goto nla_put_failure;
+        snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_STATS, nla_len(nla));
+
+        nla = nla_reserve(skb, IFLA_INET6_ICMP6STATS, ICMP6_MIB_MAX * sizeof(u64));
+        if (nla == NULL)
+                goto nla_put_failure;
+        snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_ICMP6STATS, nla_len(nla));
+
+        return 0;
+
+nla_put_failure:
+        return -EMSGSIZE;
+}
+
+static size_t inet6_get_link_af_size(const struct net_device *dev)
+{
+        if (!__in6_dev_get(dev))
+                return 0;
+
+        return inet6_ifla6_size();
+}
+
+static int inet6_fill_link_af(struct sk_buff *skb, const struct net_device *dev)
+{
+        struct inet6_dev *idev = __in6_dev_get(dev);
+
+        if (!idev)
+                return -ENODATA;
+
+        if (inet6_fill_ifla6_attrs(skb, idev) < 0)
+                return -EMSGSIZE;
+
+        return 0;
+}
+
 static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev,
                              u32 pid, u32 seq, int event, unsigned int flags)
 {
         struct net_device *dev = idev->dev;
-        struct nlattr *nla;
         struct ifinfomsg *hdr;
         struct nlmsghdr *nlh;
         void *protoinfo;
-        struct ifla_cacheinfo ci;
 
         nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
         if (nlh == NULL)
@@ -3933,30 +3991,8 @@ static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev,
         if (protoinfo == NULL)
                 goto nla_put_failure;
 
-        NLA_PUT_U32(skb, IFLA_INET6_FLAGS, idev->if_flags);
-
-        ci.max_reasm_len = IPV6_MAXPLEN;
-        ci.tstamp = cstamp_delta(idev->tstamp);
-        ci.reachable_time = jiffies_to_msecs(idev->nd_parms->reachable_time);
-        ci.retrans_time = jiffies_to_msecs(idev->nd_parms->retrans_time);
-        NLA_PUT(skb, IFLA_INET6_CACHEINFO, sizeof(ci), &ci);
-
-        nla = nla_reserve(skb, IFLA_INET6_CONF, DEVCONF_MAX * sizeof(s32));
-        if (nla == NULL)
-                goto nla_put_failure;
-        ipv6_store_devconf(&idev->cnf, nla_data(nla), nla_len(nla));
-
-        /* XXX - MC not implemented */
-
-        nla = nla_reserve(skb, IFLA_INET6_STATS, IPSTATS_MIB_MAX * sizeof(u64));
-        if (nla == NULL)
-                goto nla_put_failure;
-        snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_STATS, nla_len(nla));
-
-        nla = nla_reserve(skb, IFLA_INET6_ICMP6STATS, ICMP6_MIB_MAX * sizeof(u64));
-        if (nla == NULL)
+        if (inet6_fill_ifla6_attrs(skb, idev) < 0)
                 goto nla_put_failure;
-        snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_ICMP6STATS, nla_len(nla));
 
         nla_nest_end(skb, protoinfo);
         return nlmsg_end(skb, nlh);
@@ -4627,6 +4663,12 @@ int unregister_inet6addr_notifier(struct notifier_block *nb)
 }
 EXPORT_SYMBOL(unregister_inet6addr_notifier);
 
+static struct rtnl_af_ops inet6_ops = {
+        .family           = AF_INET6,
+        .fill_link_af     = inet6_fill_link_af,
+        .get_link_af_size = inet6_get_link_af_size,
+};
+
 /*
  *      Init / cleanup code
  */
@@ -4678,6 +4720,10 @@ int __init addrconf_init(void)
 
         addrconf_verify(0);
 
+        err = rtnl_af_register(&inet6_ops);
+        if (err < 0)
+                goto errout_af;
+
         err = __rtnl_register(PF_INET6, RTM_GETLINK, NULL, inet6_dump_ifinfo);
         if (err < 0)
                 goto errout;
@@ -4693,6 +4739,8 @@ int __init addrconf_init(void)
 
         return 0;
 errout:
+        rtnl_af_unregister(&inet6_ops);
+errout_af:
         unregister_netdevice_notifier(&ipv6_dev_notf);
 errlo:
         unregister_pernet_subsys(&addrconf_ops);
@@ -4713,6 +4761,8 @@ void addrconf_cleanup(void)
 
         rtnl_lock();
 
+        __rtnl_af_unregister(&inet6_ops);
+
         /* clean dev list */
         for_each_netdev(&init_net, dev) {
                 if (__in6_dev_get(dev) == NULL)
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 54e8e42f7a88..059a3de647db 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -810,7 +810,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features)
         }
         rcu_read_unlock();
 
-        if (unlikely(IS_ERR(segs)))
+        if (IS_ERR(segs))
                 goto out;
 
         for (skb = segs; skb; skb = skb->next) {
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index ee9b93bdd6a2..1b5c9825743b 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -49,6 +49,8 @@ struct esp_skb_cb {
 
 #define ESP_SKB_CB(__skb) ((struct esp_skb_cb *)&((__skb)->cb[0]))
 
+static u32 esp6_get_mtu(struct xfrm_state *x, int mtu);
+
 /*
  * Allocate an AEAD request structure with extra space for SG and IV.
  *
@@ -140,6 +142,8 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
         int blksize;
         int clen;
         int alen;
+        int plen;
+        int tfclen;
         int nfrags;
         u8 *iv;
         u8 *tail;
@@ -148,18 +152,26 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
         /* skb is pure payload to encrypt */
         err = -ENOMEM;
 
-        /* Round to block size */
-        clen = skb->len;
-
         aead = esp->aead;
         alen = crypto_aead_authsize(aead);
 
+        tfclen = 0;
+        if (x->tfcpad) {
+                struct xfrm_dst *dst = (struct xfrm_dst *)skb_dst(skb);
+                u32 padto;
+
+                padto = min(x->tfcpad, esp6_get_mtu(x, dst->child_mtu_cached));
+                if (skb->len < padto)
+                        tfclen = padto - skb->len;
+        }
         blksize = ALIGN(crypto_aead_blocksize(aead), 4);
-        clen = ALIGN(clen + 2, blksize);
+        clen = ALIGN(skb->len + 2 + tfclen, blksize);
         if (esp->padlen)
                 clen = ALIGN(clen, esp->padlen);
+        plen = clen - skb->len - tfclen;
 
-        if ((err = skb_cow_data(skb, clen - skb->len + alen, &trailer)) < 0)
+        err = skb_cow_data(skb, tfclen + plen + alen, &trailer);
+        if (err < 0)
                 goto error;
         nfrags = err;
 
@@ -174,13 +186,17 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
 
         /* Fill padding... */
         tail = skb_tail_pointer(trailer);
+        if (tfclen) {
+                memset(tail, 0, tfclen);
+                tail += tfclen;
+        }
         do {
                 int i;
-                for (i=0; i<clen-skb->len - 2; i++)
+                for (i = 0; i < plen - 2; i++)
                         tail[i] = i + 1;
         } while (0);
-        tail[clen-skb->len - 2] = (clen - skb->len) - 2;
-        tail[clen - skb->len - 1] = *skb_mac_header(skb);
+        tail[plen - 2] = plen - 2;
+        tail[plen - 1] = *skb_mac_header(skb);
         pskb_put(skb, trailer, clen - skb->len + alen);
 
         skb_push(skb, -skb_network_offset(skb));
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index 8a1628023bd1..e46305d1815a 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -54,24 +54,54 @@ int inet6_csk_bind_conflict(const struct sock *sk,
 
 EXPORT_SYMBOL_GPL(inet6_csk_bind_conflict);
 
+struct dst_entry *inet6_csk_route_req(struct sock *sk,
+                                      const struct request_sock *req)
+{
+        struct inet6_request_sock *treq = inet6_rsk(req);
+        struct ipv6_pinfo *np = inet6_sk(sk);
+        struct in6_addr *final_p, final;
+        struct dst_entry *dst;
+        struct flowi fl;
+
+        memset(&fl, 0, sizeof(fl));
+        fl.proto = IPPROTO_TCP;
+        ipv6_addr_copy(&fl.fl6_dst, &treq->rmt_addr);
+        final_p = fl6_update_dst(&fl, np->opt, &final);
+        ipv6_addr_copy(&fl.fl6_src, &treq->loc_addr);
+        fl.oif = sk->sk_bound_dev_if;
+        fl.mark = sk->sk_mark;
+        fl.fl_ip_dport = inet_rsk(req)->rmt_port;
+        fl.fl_ip_sport = inet_rsk(req)->loc_port;
+        security_req_classify_flow(req, &fl);
+
+        if (ip6_dst_lookup(sk, &dst, &fl))
+                return NULL;
+
+        if (final_p)
+                ipv6_addr_copy(&fl.fl6_dst, final_p);
+
+        if ((xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0)
+                return NULL;
+
+        return dst;
+}
+
 /*
  * request_sock (formerly open request) hash tables.
  */
 static u32 inet6_synq_hash(const struct in6_addr *raddr, const __be16 rport,
                            const u32 rnd, const u16 synq_hsize)
 {
-        u32 a = (__force u32)raddr->s6_addr32[0];
-        u32 b = (__force u32)raddr->s6_addr32[1];
-        u32 c = (__force u32)raddr->s6_addr32[2];
-
-        a += JHASH_GOLDEN_RATIO;
-        b += JHASH_GOLDEN_RATIO;
-        c += rnd;
-        __jhash_mix(a, b, c);
-
-        a += (__force u32)raddr->s6_addr32[3];
-        b += (__force u32)rport;
-        __jhash_mix(a, b, c);
+        u32 c;
+
+        c = jhash_3words((__force u32)raddr->s6_addr32[0],
+                         (__force u32)raddr->s6_addr32[1],
+                         (__force u32)raddr->s6_addr32[2],
+                         rnd);
+
+        c = jhash_2words((__force u32)raddr->s6_addr32[3],
+                         (__force u32)rport,
+                         c);
 
         return c & (synq_hsize - 1);
 }
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 70e891a20fb9..4f4483e697bd 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -58,8 +58,6 @@ MODULE_AUTHOR("Ville Nuorvala");
 MODULE_DESCRIPTION("IPv6 tunneling device");
 MODULE_LICENSE("GPL");
 
-#define IPV6_TLV_TEL_DST_SIZE 8
-
 #ifdef IP6_TNL_DEBUG
 #define IP6_TNL_TRACE(x...) printk(KERN_DEBUG "%s:" x "\n", __func__)
 #else
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 6f32ffce7022..9fab274019c0 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -1843,9 +1843,7 @@ static int ip6mr_forward2(struct net *net, struct mr6_table *mrt,
 
         fl = (struct flowi) {
                 .oif = vif->link,
-                .nl_u = { .ip6_u =
-                                { .daddr = ipv6h->daddr, }
-                }
+                .fl6_dst = ipv6h->daddr,
         };
 
         dst = ip6_route_output(net, NULL, &fl);
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index d1444b95ad7e..49f986d626a0 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -82,7 +82,7 @@ static void *__mld2_query_bugs[] __attribute__((__unused__)) = {
 static struct in6_addr mld2_all_mcr = MLD2_ALL_MCR_INIT;
 
 /* Big mc list lock for all the sockets */
-static DEFINE_RWLOCK(ipv6_sk_mc_lock);
+static DEFINE_SPINLOCK(ipv6_sk_mc_lock);
 
 static void igmp6_join_group(struct ifmcaddr6 *ma);
 static void igmp6_leave_group(struct ifmcaddr6 *ma);
@@ -123,6 +123,11 @@ int sysctl_mld_max_msf __read_mostly = IPV6_MLD_MAX_MSF;
  *      socket join on multicast group
  */
 
+#define for_each_pmc_rcu(np, pmc)                               \
+        for (pmc = rcu_dereference(np->ipv6_mc_list);           \
+             pmc != NULL;                                       \
+             pmc = rcu_dereference(pmc->next))
+
 int ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr)
 {
         struct net_device *dev = NULL;
@@ -134,15 +139,15 @@ int ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr)
         if (!ipv6_addr_is_multicast(addr))
                 return -EINVAL;
 
-        read_lock_bh(&ipv6_sk_mc_lock);
-        for (mc_lst=np->ipv6_mc_list; mc_lst; mc_lst=mc_lst->next) {
+        rcu_read_lock();
+        for_each_pmc_rcu(np, mc_lst) {
                 if ((ifindex == 0 || mc_lst->ifindex == ifindex) &&
                     ipv6_addr_equal(&mc_lst->addr, addr)) {
-                        read_unlock_bh(&ipv6_sk_mc_lock);
+                        rcu_read_unlock();
                         return -EADDRINUSE;
                 }
         }
-        read_unlock_bh(&ipv6_sk_mc_lock);
+        rcu_read_unlock();
 
         mc_lst = sock_kmalloc(sk, sizeof(struct ipv6_mc_socklist), GFP_KERNEL);
 
@@ -186,33 +191,41 @@ int ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr)
                 return err;
         }
 
-        write_lock_bh(&ipv6_sk_mc_lock);
+        spin_lock(&ipv6_sk_mc_lock);
         mc_lst->next = np->ipv6_mc_list;
-        np->ipv6_mc_list = mc_lst;
-        write_unlock_bh(&ipv6_sk_mc_lock);
+        rcu_assign_pointer(np->ipv6_mc_list, mc_lst);
+        spin_unlock(&ipv6_sk_mc_lock);
 
         rcu_read_unlock();
 
         return 0;
 }
 
+static void ipv6_mc_socklist_reclaim(struct rcu_head *head)
+{
+        kfree(container_of(head, struct ipv6_mc_socklist, rcu));
+}
 /*
  *      socket leave on multicast group
  */
 int ipv6_sock_mc_drop(struct sock *sk, int ifindex, const struct in6_addr *addr)
 {
         struct ipv6_pinfo *np = inet6_sk(sk);
-        struct ipv6_mc_socklist *mc_lst, **lnk;
+        struct ipv6_mc_socklist *mc_lst;
+        struct ipv6_mc_socklist __rcu **lnk;
         struct net *net = sock_net(sk);
 
-        write_lock_bh(&ipv6_sk_mc_lock);
-        for (lnk = &np->ipv6_mc_list; (mc_lst = *lnk) !=NULL ; lnk = &mc_lst->next) {
+        spin_lock(&ipv6_sk_mc_lock);
+        for (lnk = &np->ipv6_mc_list;
+             (mc_lst = rcu_dereference_protected(*lnk,
+                        lockdep_is_held(&ipv6_sk_mc_lock))) !=NULL ;
+              lnk = &mc_lst->next) {
                 if ((ifindex == 0 || mc_lst->ifindex == ifindex) &&
                     ipv6_addr_equal(&mc_lst->addr, addr)) {
                         struct net_device *dev;
 
                         *lnk = mc_lst->next;
-                        write_unlock_bh(&ipv6_sk_mc_lock);
+                        spin_unlock(&ipv6_sk_mc_lock);
 
                         rcu_read_lock();
                         dev = dev_get_by_index_rcu(net, mc_lst->ifindex);
@@ -225,11 +238,12 @@ int ipv6_sock_mc_drop(struct sock *sk, int ifindex, const struct in6_addr *addr)
                         } else
                                 (void) ip6_mc_leave_src(sk, mc_lst, NULL);
                         rcu_read_unlock();
-                        sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
+                        atomic_sub(sizeof(*mc_lst), &sk->sk_omem_alloc);
+                        call_rcu(&mc_lst->rcu, ipv6_mc_socklist_reclaim);
                         return 0;
                 }
         }
-        write_unlock_bh(&ipv6_sk_mc_lock);
+        spin_unlock(&ipv6_sk_mc_lock);
 
         return -EADDRNOTAVAIL;
 }
@@ -257,7 +271,7 @@ static struct inet6_dev *ip6_mc_find_dev_rcu(struct net *net,
                 return NULL;
         idev = __in6_dev_get(dev);
         if (!idev)
-                return NULL;;
+                return NULL;
         read_lock_bh(&idev->lock);
         if (idev->dead) {
                 read_unlock_bh(&idev->lock);
@@ -272,12 +286,13 @@ void ipv6_sock_mc_close(struct sock *sk)
         struct ipv6_mc_socklist *mc_lst;
         struct net *net = sock_net(sk);
 
-        write_lock_bh(&ipv6_sk_mc_lock);
-        while ((mc_lst = np->ipv6_mc_list) != NULL) {
+        spin_lock(&ipv6_sk_mc_lock);
+        while ((mc_lst = rcu_dereference_protected(np->ipv6_mc_list,
+                                lockdep_is_held(&ipv6_sk_mc_lock))) != NULL) {
                 struct net_device *dev;
 
                 np->ipv6_mc_list = mc_lst->next;
-                write_unlock_bh(&ipv6_sk_mc_lock);
+                spin_unlock(&ipv6_sk_mc_lock);
 
                 rcu_read_lock();
                 dev = dev_get_by_index_rcu(net, mc_lst->ifindex);
@@ -290,11 +305,13 @@ void ipv6_sock_mc_close(struct sock *sk)
                 } else
                         (void) ip6_mc_leave_src(sk, mc_lst, NULL);
                 rcu_read_unlock();
-                sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
 
-                write_lock_bh(&ipv6_sk_mc_lock);
+                atomic_sub(sizeof(*mc_lst), &sk->sk_omem_alloc);
+                call_rcu(&mc_lst->rcu, ipv6_mc_socklist_reclaim);
+
+                spin_lock(&ipv6_sk_mc_lock);
         }
-        write_unlock_bh(&ipv6_sk_mc_lock);
+        spin_unlock(&ipv6_sk_mc_lock);
 }
 
 int ip6_mc_source(int add, int omode, struct sock *sk,
@@ -328,8 +345,7 @@ int ip6_mc_source(int add, int omode, struct sock *sk,
 
         err = -EADDRNOTAVAIL;
 
-        read_lock(&ipv6_sk_mc_lock);
-        for (pmc=inet6->ipv6_mc_list; pmc; pmc=pmc->next) {
+        for_each_pmc_rcu(inet6, pmc) {
                 if (pgsr->gsr_interface && pmc->ifindex != pgsr->gsr_interface)
                         continue;
                 if (ipv6_addr_equal(&pmc->addr, group))
@@ -428,7 +444,6 @@ int ip6_mc_source(int add, int omode, struct sock *sk,
 done:
         if (pmclocked)
                 write_unlock(&pmc->sflock);
-        read_unlock(&ipv6_sk_mc_lock);
         read_unlock_bh(&idev->lock);
         rcu_read_unlock();
         if (leavegroup)
@@ -466,14 +481,13 @@ int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf)
         dev = idev->dev;
 
         err = 0;
-        read_lock(&ipv6_sk_mc_lock);
 
         if (gsf->gf_fmode == MCAST_INCLUDE && gsf->gf_numsrc == 0) {
                 leavegroup = 1;
                 goto done;
         }
 
-        for (pmc=inet6->ipv6_mc_list; pmc; pmc=pmc->next) {
+        for_each_pmc_rcu(inet6, pmc) {
                 if (pmc->ifindex != gsf->gf_interface)
                         continue;
                 if (ipv6_addr_equal(&pmc->addr, group))
@@ -521,7 +535,6 @@ int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf)
         write_unlock(&pmc->sflock);
         err = 0;
 done:
-        read_unlock(&ipv6_sk_mc_lock);
         read_unlock_bh(&idev->lock);
         rcu_read_unlock();
         if (leavegroup)
@@ -562,7 +575,7 @@ int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
          * so reading the list is safe.
          */
 
-        for (pmc=inet6->ipv6_mc_list; pmc; pmc=pmc->next) {
+        for_each_pmc_rcu(inet6, pmc) {
                 if (pmc->ifindex != gsf->gf_interface)
                         continue;
                 if (ipv6_addr_equal(group, &pmc->addr))
@@ -612,13 +625,13 @@ int inet6_mc_check(struct sock *sk, const struct in6_addr *mc_addr,
         struct ip6_sf_socklist *psl;
         int rv = 1;
 
-        read_lock(&ipv6_sk_mc_lock);
-        for (mc = np->ipv6_mc_list; mc; mc = mc->next) {
+        rcu_read_lock();
+        for_each_pmc_rcu(np, mc) {
                 if (ipv6_addr_equal(&mc->addr, mc_addr))
                         break;
         }
         if (!mc) {
-                read_unlock(&ipv6_sk_mc_lock);
+                rcu_read_unlock();
                 return 1;
         }
         read_lock(&mc->sflock);
@@ -638,7 +651,7 @@ int inet6_mc_check(struct sock *sk, const struct in6_addr *mc_addr,
                         rv = 0;
         }
         read_unlock(&mc->sflock);
-        read_unlock(&ipv6_sk_mc_lock);
+        rcu_read_unlock();
 
         return rv;
 }
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 998d6d27e7cf..2342545a5ee9 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -141,18 +141,18 @@ struct neigh_table nd_tbl = {
         .proxy_redo =   pndisc_redo,
         .id =           "ndisc_cache",
         .parms = {
-                .tbl =                  &nd_tbl,
-                .base_reachable_time =  30 * HZ,
-                .retrans_time =  1 * HZ,
-                .gc_staletime = 60 * HZ,
-                .reachable_time =               30 * HZ,
-                .delay_probe_time =      5 * HZ,
-                .queue_len =             3,
-                .ucast_probes =  3,
-                .mcast_probes =  3,
-                .anycast_delay =         1 * HZ,
-                .proxy_delay =          (8 * HZ) / 10,
-                .proxy_qlen =           64,
+                .tbl                    = &nd_tbl,
+                .base_reachable_time    = ND_REACHABLE_TIME,
+                .retrans_time           = ND_RETRANS_TIMER,
+                .gc_staletime           = 60 * HZ,
+                .reachable_time         = ND_REACHABLE_TIME,
+                .delay_probe_time       = 5 * HZ,
+                .queue_len              = 3,
+                .ucast_probes           = 3,
+                .mcast_probes           = 3,
+                .anycast_delay          = 1 * HZ,
+                .proxy_delay            = (8 * HZ) / 10,
+                .proxy_qlen             = 64,
         },
         .gc_interval =    30 * HZ,
         .gc_thresh1 =    128,
@@ -1259,7 +1259,8 @@ static void ndisc_router_discovery(struct sk_buff *skb)
         if (ra_msg->icmph.icmp6_hop_limit) {
                 in6_dev->cnf.hop_limit = ra_msg->icmph.icmp6_hop_limit;
                 if (rt)
-                        rt->dst.metrics[RTAX_HOPLIMIT-1] = ra_msg->icmph.icmp6_hop_limit;
+                        dst_metric_set(&rt->dst, RTAX_HOPLIMIT,
+                                       ra_msg->icmph.icmp6_hop_limit);
         }
 
 skip_defrtr:
@@ -1377,7 +1378,7 @@ skip_linkparms:
                         in6_dev->cnf.mtu6 = mtu;
 
                         if (rt)
-                                rt->dst.metrics[RTAX_MTU-1] = mtu;
+                                dst_metric_set(&rt->dst, RTAX_MTU, mtu);
 
                         rt6_mtu_change(skb->dev, mtu);
                 }
diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c
index 7155b2451d7c..35915e8617f0 100644
--- a/net/ipv6/netfilter.c
+++ b/net/ipv6/netfilter.c
@@ -18,10 +18,8 @@ int ip6_route_me_harder(struct sk_buff *skb)
         struct flowi fl = {
                 .oif = skb->sk ? skb->sk->sk_bound_dev_if : 0,
                 .mark = skb->mark,
-                .nl_u =
-                { .ip6_u =
-                  { .daddr = iph->daddr,
-                    .saddr = iph->saddr, } },
+                .fl6_dst = iph->daddr,
+                .fl6_src = iph->saddr,
         };
 
         dst = ip6_route_output(net, skb->sk, &fl);
diff --git a/net/ipv6/netfilter/Makefile b/net/ipv6/netfilter/Makefile
index 0a432c9b0795..abfee91ce816 100644
--- a/net/ipv6/netfilter/Makefile
+++ b/net/ipv6/netfilter/Makefile
@@ -11,13 +11,13 @@ obj-$(CONFIG_IP6_NF_RAW) += ip6table_raw.o
 obj-$(CONFIG_IP6_NF_SECURITY) += ip6table_security.o
 
 # objects for l3 independent conntrack
-nf_conntrack_ipv6-objs  :=  nf_conntrack_l3proto_ipv6.o nf_conntrack_proto_icmpv6.o
+nf_conntrack_ipv6-y  :=  nf_conntrack_l3proto_ipv6.o nf_conntrack_proto_icmpv6.o
 
 # l3 independent conntrack
 obj-$(CONFIG_NF_CONNTRACK_IPV6) += nf_conntrack_ipv6.o nf_defrag_ipv6.o
 
 # defrag
-nf_defrag_ipv6-objs := nf_defrag_ipv6_hooks.o nf_conntrack_reasm.o
+nf_defrag_ipv6-y := nf_defrag_ipv6_hooks.o nf_conntrack_reasm.o
 obj-$(CONFIG_NF_DEFRAG_IPV6) += nf_defrag_ipv6.o
 
 # matches
diff --git a/net/ipv6/netfilter/ip6t_REJECT.c b/net/ipv6/netfilter/ip6t_REJECT.c
index 2933396e0281..bf998feac14e 100644
--- a/net/ipv6/netfilter/ip6t_REJECT.c
+++ b/net/ipv6/netfilter/ip6t_REJECT.c
@@ -124,7 +124,7 @@ static void send_reset(struct net *net, struct sk_buff *oldskb)
         skb_reset_network_header(nskb);
         ip6h = ipv6_hdr(nskb);
         ip6h->version = 6;
-        ip6h->hop_limit = dst_metric(dst, RTAX_HOPLIMIT);
+        ip6h->hop_limit = ip6_dst_hoplimit(dst);
         ip6h->nexthdr = IPPROTO_TCP;
         ipv6_addr_copy(&ip6h->saddr, &oip6h->daddr);
         ipv6_addr_copy(&ip6h->daddr, &oip6h->saddr);
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 0f2766453759..07beeb06f752 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -104,26 +104,22 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev,
 unsigned int inet6_hash_frag(__be32 id, const struct in6_addr *saddr,
                              const struct in6_addr *daddr, u32 rnd)
 {
-        u32 a, b, c;
-
-        a = (__force u32)saddr->s6_addr32[0];
-        b = (__force u32)saddr->s6_addr32[1];
-        c = (__force u32)saddr->s6_addr32[2];
-
-        a += JHASH_GOLDEN_RATIO;
-        b += JHASH_GOLDEN_RATIO;
-        c += rnd;
-        __jhash_mix(a, b, c);
-
-        a += (__force u32)saddr->s6_addr32[3];
-        b += (__force u32)daddr->s6_addr32[0];
-        c += (__force u32)daddr->s6_addr32[1];
-        __jhash_mix(a, b, c);
-
-        a += (__force u32)daddr->s6_addr32[2];
-        b += (__force u32)daddr->s6_addr32[3];
-        c += (__force u32)id;
-        __jhash_mix(a, b, c);
+        u32 c;
+
+        c = jhash_3words((__force u32)saddr->s6_addr32[0],
+                         (__force u32)saddr->s6_addr32[1],
+                         (__force u32)saddr->s6_addr32[2],
+                         rnd);
+
+        c = jhash_3words((__force u32)saddr->s6_addr32[3],
+                         (__force u32)daddr->s6_addr32[0],
+                         (__force u32)daddr->s6_addr32[1],
+                         c);
+
+        c =  jhash_3words((__force u32)daddr->s6_addr32[2],
+                          (__force u32)daddr->s6_addr32[3],
+                          (__force u32)id,
+                          c);
 
         return c & (INETFRAGS_HASHSZ - 1);
 }
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 7659d6f16e6b..d5c3b45d829e 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -76,6 +76,8 @@
 
 static struct rt6_info * ip6_rt_copy(struct rt6_info *ort);
 static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie);
+static unsigned int      ip6_default_advmss(const struct dst_entry *dst);
+static unsigned int      ip6_default_mtu(const struct dst_entry *dst);
 static struct dst_entry *ip6_negative_advice(struct dst_entry *);
 static void             ip6_dst_destroy(struct dst_entry *);
 static void             ip6_dst_ifdown(struct dst_entry *,
@@ -103,6 +105,8 @@ static struct dst_ops ip6_dst_ops_template = {
         .gc                     =       ip6_dst_gc,
         .gc_thresh              =       1024,
         .check                  =       ip6_dst_check,
+        .default_advmss         =       ip6_default_advmss,
+        .default_mtu            =       ip6_default_mtu,
         .destroy                =       ip6_dst_destroy,
         .ifdown                 =       ip6_dst_ifdown,
         .negative_advice        =       ip6_negative_advice,
@@ -129,7 +133,6 @@ static struct rt6_info ip6_null_entry_template = {
                 .__use          = 1,
                 .obsolete       = -1,
                 .error          = -ENETUNREACH,
-                .metrics        = { [RTAX_HOPLIMIT - 1] = 255, },
                 .input          = ip6_pkt_discard,
                 .output         = ip6_pkt_discard_out,
         },
@@ -150,7 +153,6 @@ static struct rt6_info ip6_prohibit_entry_template = {
                 .__use          = 1,
                 .obsolete       = -1,
                 .error          = -EACCES,
-                .metrics        = { [RTAX_HOPLIMIT - 1] = 255, },
                 .input          = ip6_pkt_prohibit,
                 .output         = ip6_pkt_prohibit_out,
         },
@@ -166,7 +168,6 @@ static struct rt6_info ip6_blk_hole_entry_template = {
                 .__use          = 1,
                 .obsolete       = -1,
                 .error          = -EINVAL,
-                .metrics        = { [RTAX_HOPLIMIT - 1] = 255, },
                 .input          = dst_discard,
                 .output         = dst_discard,
         },
@@ -188,11 +189,29 @@ static void ip6_dst_destroy(struct dst_entry *dst)
 {
         struct rt6_info *rt = (struct rt6_info *)dst;
         struct inet6_dev *idev = rt->rt6i_idev;
+        struct inet_peer *peer = rt->rt6i_peer;
 
         if (idev != NULL) {
                 rt->rt6i_idev = NULL;
                 in6_dev_put(idev);
         }
+        if (peer) {
+                BUG_ON(!(rt->rt6i_flags & RTF_CACHE));
+                rt->rt6i_peer = NULL;
+                inet_putpeer(peer);
+        }
+}
+
+void rt6_bind_peer(struct rt6_info *rt, int create)
+{
+        struct inet_peer *peer;
+
+        if (WARN_ON(!(rt->rt6i_flags & RTF_CACHE)))
+                return;
+
+        peer = inet_getpeer_v6(&rt->rt6i_dst.addr, create);
+        if (peer && cmpxchg(&rt->rt6i_peer, NULL, peer) != NULL)
+                inet_putpeer(peer);
 }
 
 static void ip6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
@@ -558,11 +577,7 @@ struct rt6_info *rt6_lookup(struct net *net, const struct in6_addr *daddr,
 {
         struct flowi fl = {
                 .oif = oif,
-                .nl_u = {
-                        .ip6_u = {
-                                .daddr = *daddr,
-                        },
-                },
+                .fl6_dst = *daddr,
         };
         struct dst_entry *dst;
         int flags = strict ? RT6_LOOKUP_F_IFACE : 0;
@@ -778,13 +793,9 @@ void ip6_route_input(struct sk_buff *skb)
         int flags = RT6_LOOKUP_F_HAS_SADDR;
         struct flowi fl = {
                 .iif = skb->dev->ifindex,
-                .nl_u = {
-                        .ip6_u = {
-                                .daddr = iph->daddr,
-                                .saddr = iph->saddr,
-                                .flowlabel = (* (__be32 *) iph)&IPV6_FLOWINFO_MASK,
-                        },
-                },
+                .fl6_dst = iph->daddr,
+                .fl6_src = iph->saddr,
+                .fl6_flowlabel = (* (__be32 *) iph)&IPV6_FLOWINFO_MASK,
                 .mark = skb->mark,
                 .proto = iph->nexthdr,
         };
@@ -834,7 +845,7 @@ int ip6_dst_blackhole(struct sock *sk, struct dst_entry **dstp, struct flowi *fl
                 new->input = dst_discard;
                 new->output = dst_discard;
 
-                memcpy(new->metrics, ort->dst.metrics, RTAX_MAX*sizeof(u32));
+                dst_copy_metrics(new, &ort->dst);
                 new->dev = ort->dst.dev;
                 if (new->dev)
                         dev_hold(new->dev);
@@ -918,18 +929,22 @@ static void ip6_rt_update_pmtu(struct dst_entry *dst, u32 mtu)
         if (mtu < dst_mtu(dst) && rt6->rt6i_dst.plen == 128) {
                 rt6->rt6i_flags |= RTF_MODIFIED;
                 if (mtu < IPV6_MIN_MTU) {
+                        u32 features = dst_metric(dst, RTAX_FEATURES);
                         mtu = IPV6_MIN_MTU;
-                        dst->metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;
+                        features |= RTAX_FEATURE_ALLFRAG;
+                        dst_metric_set(dst, RTAX_FEATURES, features);
                 }
-                dst->metrics[RTAX_MTU-1] = mtu;
+                dst_metric_set(dst, RTAX_MTU, mtu);
                 call_netevent_notifiers(NETEVENT_PMTU_UPDATE, dst);
         }
 }
 
-static int ipv6_get_mtu(struct net_device *dev);
-
-static inline unsigned int ipv6_advmss(struct net *net, unsigned int mtu)
+static unsigned int ip6_default_advmss(const struct dst_entry *dst)
 {
+        struct net_device *dev = dst->dev;
+        unsigned int mtu = dst_mtu(dst);
+        struct net *net = dev_net(dev);
+
         mtu -= sizeof(struct ipv6hdr) + sizeof(struct tcphdr);
 
         if (mtu < net->ipv6.sysctl.ip6_rt_min_advmss)
@@ -946,6 +961,20 @@ static inline unsigned int ipv6_advmss(struct net *net, unsigned int mtu)
         return mtu;
 }
 
+static unsigned int ip6_default_mtu(const struct dst_entry *dst)
+{
+        unsigned int mtu = IPV6_MIN_MTU;
+        struct inet6_dev *idev;
+
+        rcu_read_lock();
+        idev = __in6_dev_get(dst->dev);
+        if (idev)
+                mtu = idev->cnf.mtu6;
+        rcu_read_unlock();
+
+        return mtu;
+}
+
 static struct dst_entry *icmp6_dst_gc_list;
 static DEFINE_SPINLOCK(icmp6_dst_lock);
 
@@ -979,9 +1008,7 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
         rt->rt6i_idev     = idev;
         rt->rt6i_nexthop  = neigh;
         atomic_set(&rt->dst.__refcnt, 1);
-        rt->dst.metrics[RTAX_HOPLIMIT-1] = 255;
-        rt->dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(rt->rt6i_dev);
-        rt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->dst));
+        dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 255);
         rt->dst.output  = ip6_output;
 
 #if 0   /* there's no chance to use these for ndisc */
@@ -1080,23 +1107,10 @@ out:
    Remove it only when all the things will work!
  */
 
-static int ipv6_get_mtu(struct net_device *dev)
-{
-        int mtu = IPV6_MIN_MTU;
-        struct inet6_dev *idev;
-
-        rcu_read_lock();
-        idev = __in6_dev_get(dev);
-        if (idev)
-                mtu = idev->cnf.mtu6;
-        rcu_read_unlock();
-        return mtu;
-}
-
 int ip6_dst_hoplimit(struct dst_entry *dst)
 {
-        int hoplimit = dst_metric(dst, RTAX_HOPLIMIT);
-        if (hoplimit < 0) {
+        int hoplimit = dst_metric_raw(dst, RTAX_HOPLIMIT);
+        if (hoplimit == 0) {
                 struct net_device *dev = dst->dev;
                 struct inet6_dev *idev;
 
@@ -1110,6 +1124,7 @@ int ip6_dst_hoplimit(struct dst_entry *dst)
         }
         return hoplimit;
 }
+EXPORT_SYMBOL(ip6_dst_hoplimit);
 
 /*
  *
@@ -1295,17 +1310,11 @@ install_route:
                                         goto out;
                                 }
 
-                                rt->dst.metrics[type - 1] = nla_get_u32(nla);
+                                dst_metric_set(&rt->dst, type, nla_get_u32(nla));
                         }
                 }
         }
 
-        if (dst_metric(&rt->dst, RTAX_HOPLIMIT) == 0)
-                rt->dst.metrics[RTAX_HOPLIMIT-1] = -1;
-        if (!dst_mtu(&rt->dst))
-                rt->dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(dev);
-        if (!dst_metric(&rt->dst, RTAX_ADVMSS))
-                rt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->dst));
         rt->dst.dev = dev;
         rt->rt6i_idev = idev;
         rt->rt6i_table = table;
@@ -1463,12 +1472,8 @@ static struct rt6_info *ip6_route_redirect(struct in6_addr *dest,
         struct ip6rd_flowi rdfl = {
                 .fl = {
                         .oif = dev->ifindex,
-                        .nl_u = {
-                                .ip6_u = {
-                                        .daddr = *dest,
-                                        .saddr = *src,
-                                },
-                        },
+                        .fl6_dst = *dest,
+                        .fl6_src = *src,
                 },
         };
 
@@ -1534,10 +1539,6 @@ void rt6_redirect(struct in6_addr *dest, struct in6_addr *src,
 
         ipv6_addr_copy(&nrt->rt6i_gateway, (struct in6_addr*)neigh->primary_key);
         nrt->rt6i_nexthop = neigh_clone(neigh);
-        /* Reset pmtu, it may be better */
-        nrt->dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(neigh->dev);
-        nrt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(dev_net(neigh->dev),
-                                                        dst_mtu(&nrt->dst));
 
         if (ip6_ins_rt(nrt))
                 goto out;
@@ -1601,9 +1602,12 @@ again:
            would return automatically.
          */
         if (rt->rt6i_flags & RTF_CACHE) {
-                rt->dst.metrics[RTAX_MTU-1] = pmtu;
-                if (allfrag)
-                        rt->dst.metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;
+                dst_metric_set(&rt->dst, RTAX_MTU, pmtu);
+                if (allfrag) {
+                        u32 features = dst_metric(&rt->dst, RTAX_FEATURES);
+                        features |= RTAX_FEATURE_ALLFRAG;
+                        dst_metric_set(&rt->dst, RTAX_FEATURES, features);
+                }
                 dst_set_expires(&rt->dst, net->ipv6.sysctl.ip6_rt_mtu_expires);
                 rt->rt6i_flags |= RTF_MODIFIED|RTF_EXPIRES;
                 goto out;
@@ -1620,9 +1624,12 @@ again:
                 nrt = rt6_alloc_clone(rt, daddr);
 
         if (nrt) {
-                nrt->dst.metrics[RTAX_MTU-1] = pmtu;
-                if (allfrag)
-                        nrt->dst.metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;
+                dst_metric_set(&nrt->dst, RTAX_MTU, pmtu);
+                if (allfrag) {
+                        u32 features = dst_metric(&nrt->dst, RTAX_FEATURES);
+                        features |= RTAX_FEATURE_ALLFRAG;
+                        dst_metric_set(&nrt->dst, RTAX_FEATURES, features);
+                }
 
                 /* According to RFC 1981, detecting PMTU increase shouldn't be
                  * happened within 5 mins, the recommended timer is 10 mins.
@@ -1673,7 +1680,7 @@ static struct rt6_info * ip6_rt_copy(struct rt6_info *ort)
                 rt->dst.input = ort->dst.input;
                 rt->dst.output = ort->dst.output;
 
-                memcpy(rt->dst.metrics, ort->dst.metrics, RTAX_MAX*sizeof(u32));
+                dst_copy_metrics(&rt->dst, &ort->dst);
                 rt->dst.error = ort->dst.error;
                 rt->dst.dev = ort->dst.dev;
                 if (rt->dst.dev)
@@ -1965,9 +1972,7 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
         rt->dst.output = ip6_output;
         rt->rt6i_dev = net->loopback_dev;
         rt->rt6i_idev = idev;
-        rt->dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(rt->rt6i_dev);
-        rt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->dst));
-        rt->dst.metrics[RTAX_HOPLIMIT-1] = -1;
+        dst_metric_set(&rt->dst, RTAX_HOPLIMIT, -1);
         rt->dst.obsolete = -1;
 
         rt->rt6i_flags = RTF_UP | RTF_NONEXTHOP;
@@ -2036,7 +2041,6 @@ static int rt6_mtu_change_route(struct rt6_info *rt, void *p_arg)
 {
         struct rt6_mtu_change_arg *arg = (struct rt6_mtu_change_arg *) p_arg;
         struct inet6_dev *idev;
-        struct net *net = dev_net(arg->dev);
 
         /* In IPv6 pmtu discovery is not optional,
            so that RTAX_MTU lock cannot disable it.
@@ -2067,8 +2071,7 @@ static int rt6_mtu_change_route(struct rt6_info *rt, void *p_arg)
             (dst_mtu(&rt->dst) >= arg->mtu ||
              (dst_mtu(&rt->dst) < arg->mtu &&
               dst_mtu(&rt->dst) == idev->cnf.mtu6))) {
-                rt->dst.metrics[RTAX_MTU-1] = arg->mtu;
-                rt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, arg->mtu);
+                dst_metric_set(&rt->dst, RTAX_MTU, arg->mtu);
         }
         return 0;
 }
@@ -2294,7 +2297,7 @@ static int rt6_fill_node(struct net *net,
                         NLA_PUT(skb, RTA_PREFSRC, 16, &saddr_buf);
         }
 
-        if (rtnetlink_put_metrics(skb, rt->dst.metrics) < 0)
+        if (rtnetlink_put_metrics(skb, dst_metrics_ptr(&rt->dst)) < 0)
                 goto nla_put_failure;
 
         if (rt->dst.neighbour)
@@ -2470,8 +2473,6 @@ static int ip6_route_dev_notify(struct notifier_block *this,
 
 #ifdef CONFIG_PROC_FS
 
-#define RT6_INFO_LEN (32 + 4 + 32 + 4 + 32 + 40 + 5 + 1)
-
 struct rt6_proc_arg
 {
         char *buffer;
@@ -2687,6 +2688,7 @@ static int __net_init ip6_route_net_init(struct net *net)
         net->ipv6.ip6_null_entry->dst.path =
                 (struct dst_entry *)net->ipv6.ip6_null_entry;
         net->ipv6.ip6_null_entry->dst.ops = &net->ipv6.ip6_dst_ops;
+        dst_metric_set(&net->ipv6.ip6_null_entry->dst, RTAX_HOPLIMIT, 255);
 
 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
         net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template,
@@ -2697,6 +2699,7 @@ static int __net_init ip6_route_net_init(struct net *net)
         net->ipv6.ip6_prohibit_entry->dst.path =
                 (struct dst_entry *)net->ipv6.ip6_prohibit_entry;
         net->ipv6.ip6_prohibit_entry->dst.ops = &net->ipv6.ip6_dst_ops;
+        dst_metric_set(&net->ipv6.ip6_prohibit_entry->dst, RTAX_HOPLIMIT, 255);
 
         net->ipv6.ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template,
                                                sizeof(*net->ipv6.ip6_blk_hole_entry),
@@ -2706,6 +2709,7 @@ static int __net_init ip6_route_net_init(struct net *net)
         net->ipv6.ip6_blk_hole_entry->dst.path =
                 (struct dst_entry *)net->ipv6.ip6_blk_hole_entry;
         net->ipv6.ip6_blk_hole_entry->dst.ops = &net->ipv6.ip6_dst_ops;
+        dst_metric_set(&net->ipv6.ip6_blk_hole_entry->dst, RTAX_HOPLIMIT, 255);
 #endif
 
         net->ipv6.sysctl.flush_delay = 0;
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 8c4d00c7cd2b..8ce38f10a547 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -731,10 +731,9 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
         }
 
         {
-                struct flowi fl = { .nl_u = { .ip4_u =
-                                              { .daddr = dst,
-                                                .saddr = tiph->saddr,
-                                                .tos = RT_TOS(tos) } },
+                struct flowi fl = { .fl4_dst = dst,
+                                    .fl4_src = tiph->saddr,
+                                    .fl4_tos = RT_TOS(tos),
                                     .oif = tunnel->parms.link,
                                     .proto = IPPROTO_IPV6 };
                 if (ip_route_output_key(dev_net(dev), &rt, &fl)) {
@@ -856,10 +855,9 @@ static void ipip6_tunnel_bind_dev(struct net_device *dev)
         iph = &tunnel->parms.iph;
 
         if (iph->daddr) {
-                struct flowi fl = { .nl_u = { .ip4_u =
-                                              { .daddr = iph->daddr,
-                                                .saddr = iph->saddr,
-                                                .tos = RT_TOS(iph->tos) } },
+                struct flowi fl = { .fl4_dst = iph->daddr,
+                                    .fl4_src = iph->saddr,
+                                    .fl4_tos = RT_TOS(iph->tos),
                                     .oif = tunnel->parms.link,
                                     .proto = IPPROTO_IPV6 };
                 struct rtable *rt;
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 7e41e2cbb85e..20aa95e37359 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -130,6 +130,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
         struct ipv6_pinfo *np = inet6_sk(sk);
         struct tcp_sock *tp = tcp_sk(sk);
         struct in6_addr *saddr = NULL, *final_p, final;
+        struct rt6_info *rt;
         struct flowi fl;
         struct dst_entry *dst;
         int addr_type;
@@ -280,6 +281,26 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
         sk->sk_gso_type = SKB_GSO_TCPV6;
         __ip6_dst_store(sk, dst, NULL, NULL);
 
+        rt = (struct rt6_info *) dst;
+        if (tcp_death_row.sysctl_tw_recycle &&
+            !tp->rx_opt.ts_recent_stamp &&
+            ipv6_addr_equal(&rt->rt6i_dst.addr, &np->daddr)) {
+                struct inet_peer *peer = rt6_get_peer(rt);
+                /*
+                 * VJ's idea. We save last timestamp seen from
+                 * the destination in peer table, when entering state
+                 * TIME-WAIT * and initialize rx_opt.ts_recent from it,
+                 * when trying new connection.
+                 */
+                if (peer) {
+                        inet_peer_refcheck(peer);
+                        if ((u32)get_seconds() - peer->tcp_ts_stamp <= TCP_PAWS_MSL) {
+                                tp->rx_opt.ts_recent_stamp = peer->tcp_ts_stamp;
+                                tp->rx_opt.ts_recent = peer->tcp_ts;
+                        }
+                }
+        }
+
         icsk->icsk_ext_hdr_len = 0;
         if (np->opt)
                 icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
@@ -906,12 +927,6 @@ static const struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = {
 };
 #endif
 
-static struct timewait_sock_ops tcp6_timewait_sock_ops = {
-        .twsk_obj_size  = sizeof(struct tcp6_timewait_sock),
-        .twsk_unique    = tcp_twsk_unique,
-        .twsk_destructor= tcp_twsk_destructor,
-};
-
 static void __tcp_v6_send_check(struct sk_buff *skb,
                                 struct in6_addr *saddr, struct in6_addr *daddr)
 {
@@ -1176,6 +1191,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
         struct ipv6_pinfo *np = inet6_sk(sk);
         struct tcp_sock *tp = tcp_sk(sk);
         __u32 isn = TCP_SKB_CB(skb)->when;
+        struct dst_entry *dst = NULL;
 #ifdef CONFIG_SYN_COOKIES
         int want_cookie = 0;
 #else
@@ -1273,6 +1289,8 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
                 TCP_ECN_create_request(req, tcp_hdr(skb));
 
         if (!isn) {
+                struct inet_peer *peer = NULL;
+
                 if (ipv6_opt_accepted(sk, skb) ||
                     np->rxopt.bits.rxinfo || np->rxopt.bits.rxoinfo ||
                     np->rxopt.bits.rxhlim || np->rxopt.bits.rxohlim) {
@@ -1285,13 +1303,57 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
                 if (!sk->sk_bound_dev_if &&
                     ipv6_addr_type(&treq->rmt_addr) & IPV6_ADDR_LINKLOCAL)
                         treq->iif = inet6_iif(skb);
-                if (!want_cookie) {
-                        isn = tcp_v6_init_sequence(skb);
-                } else {
+
+                if (want_cookie) {
                         isn = cookie_v6_init_sequence(sk, skb, &req->mss);
                         req->cookie_ts = tmp_opt.tstamp_ok;
+                        goto have_isn;
                 }
+
+                /* VJ's idea. We save last timestamp seen
+                 * from the destination in peer table, when entering
+                 * state TIME-WAIT, and check against it before
+                 * accepting new connection request.
+                 *
+                 * If "isn" is not zero, this request hit alive
+                 * timewait bucket, so that all the necessary checks
+                 * are made in the function processing timewait state.
+                 */
+                if (tmp_opt.saw_tstamp &&
+                    tcp_death_row.sysctl_tw_recycle &&
+                    (dst = inet6_csk_route_req(sk, req)) != NULL &&
+                    (peer = rt6_get_peer((struct rt6_info *)dst)) != NULL &&
+                    ipv6_addr_equal((struct in6_addr *)peer->daddr.a6,
+                                    &treq->rmt_addr)) {
+                        inet_peer_refcheck(peer);
+                        if ((u32)get_seconds() - peer->tcp_ts_stamp < TCP_PAWS_MSL &&
+                            (s32)(peer->tcp_ts - req->ts_recent) >
+                                                        TCP_PAWS_WINDOW) {
+                                NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_PAWSPASSIVEREJECTED);
+                                goto drop_and_release;
+                        }
+                }
+                /* Kill the following clause, if you dislike this way. */
+                else if (!sysctl_tcp_syncookies &&
+                         (sysctl_max_syn_backlog - inet_csk_reqsk_queue_len(sk) <
+                          (sysctl_max_syn_backlog >> 2)) &&
+                         (!peer || !peer->tcp_ts_stamp) &&
+                         (!dst || !dst_metric(dst, RTAX_RTT))) {
+                        /* Without syncookies last quarter of
+                         * backlog is filled with destinations,
+                         * proven to be alive.
+                         * It means that we continue to communicate
+                         * to destinations, already remembered
+                         * to the moment of synflood.
+                         */
+                        LIMIT_NETDEBUG(KERN_DEBUG "TCP: drop open request from %pI6/%u\n",
+                                       &treq->rmt_addr, ntohs(tcp_hdr(skb)->source));
+                        goto drop_and_release;
+                }
+
+                isn = tcp_v6_init_sequence(skb);
         }
+have_isn:
         tcp_rsk(req)->snt_isn = isn;
 
         security_inet_conn_request(sk, skb, req);
@@ -1304,6 +1366,8 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
         inet6_csk_reqsk_queue_hash_add(sk, req, TCP_TIMEOUT_INIT);
         return 0;
 
+drop_and_release:
+        dst_release(dst);
 drop_and_free:
         reqsk_free(req);
 drop:
@@ -1382,28 +1446,9 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
         if (sk_acceptq_is_full(sk))
                 goto out_overflow;
 
-        if (dst == NULL) {
-                struct in6_addr *final_p, final;
-                struct flowi fl;
-
-                memset(&fl, 0, sizeof(fl));
-                fl.proto = IPPROTO_TCP;
-                ipv6_addr_copy(&fl.fl6_dst, &treq->rmt_addr);
-                final_p = fl6_update_dst(&fl, opt, &final);
-                ipv6_addr_copy(&fl.fl6_src, &treq->loc_addr);
-                fl.oif = sk->sk_bound_dev_if;
-                fl.mark = sk->sk_mark;
-                fl.fl_ip_dport = inet_rsk(req)->rmt_port;
-                fl.fl_ip_sport = inet_rsk(req)->loc_port;
-                security_req_classify_flow(req, &fl);
-
-                if (ip6_dst_lookup(sk, &dst, &fl))
-                        goto out;
-
-                if (final_p)
-                        ipv6_addr_copy(&fl.fl6_dst, final_p);
-
-                if ((xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0)
+        if (!dst) {
+                dst = inet6_csk_route_req(sk, req);
+                if (!dst)
                         goto out;
         }
 
@@ -1476,7 +1521,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 
         tcp_mtup_init(newsk);
         tcp_sync_mss(newsk, dst_mtu(dst));
-        newtp->advmss = dst_metric(dst, RTAX_ADVMSS);
+        newtp->advmss = dst_metric_advmss(dst);
         tcp_initialize_rcv_mss(newsk);
 
         newinet->inet_daddr = newinet->inet_saddr = LOOPBACK4_IPV6;
@@ -1818,19 +1863,51 @@ do_time_wait:
         goto discard_it;
 }
 
-static int tcp_v6_remember_stamp(struct sock *sk)
+static struct inet_peer *tcp_v6_get_peer(struct sock *sk, bool *release_it)
 {
-        /* Alas, not yet... */
-        return 0;
+        struct rt6_info *rt = (struct rt6_info *) __sk_dst_get(sk);
+        struct ipv6_pinfo *np = inet6_sk(sk);
+        struct inet_peer *peer;
+
+        if (!rt ||
+            !ipv6_addr_equal(&np->daddr, &rt->rt6i_dst.addr)) {
+                peer = inet_getpeer_v6(&np->daddr, 1);
+                *release_it = true;
+        } else {
+                if (!rt->rt6i_peer)
+                        rt6_bind_peer(rt, 1);
+                peer = rt->rt6i_peer;
+                *release_it = false;
+        }
+
+        return peer;
 }
 
+static void *tcp_v6_tw_get_peer(struct sock *sk)
+{
+        struct inet6_timewait_sock *tw6 = inet6_twsk(sk);
+        struct inet_timewait_sock *tw = inet_twsk(sk);
+
+        if (tw->tw_family == AF_INET)
+                return tcp_v4_tw_get_peer(sk);
+
+        return inet_getpeer_v6(&tw6->tw_v6_daddr, 1);
+}
+
+static struct timewait_sock_ops tcp6_timewait_sock_ops = {
+        .twsk_obj_size  = sizeof(struct tcp6_timewait_sock),
+        .twsk_unique    = tcp_twsk_unique,
+        .twsk_destructor= tcp_twsk_destructor,
+        .twsk_getpeer   = tcp_v6_tw_get_peer,
+};
+
 static const struct inet_connection_sock_af_ops ipv6_specific = {
         .queue_xmit        = inet6_csk_xmit,
         .send_check        = tcp_v6_send_check,
         .rebuild_header    = inet6_sk_rebuild_header,
         .conn_request      = tcp_v6_conn_request,
         .syn_recv_sock     = tcp_v6_syn_recv_sock,
-        .remember_stamp    = tcp_v6_remember_stamp,
+        .get_peer          = tcp_v6_get_peer,
         .net_header_len    = sizeof(struct ipv6hdr),
         .setsockopt        = ipv6_setsockopt,
         .getsockopt        = ipv6_getsockopt,
@@ -1862,7 +1939,7 @@ static const struct inet_connection_sock_af_ops ipv6_mapped = {
         .rebuild_header    = inet_sk_rebuild_header,
         .conn_request      = tcp_v6_conn_request,
         .syn_recv_sock     = tcp_v6_syn_recv_sock,
-        .remember_stamp    = tcp_v4_remember_stamp,
+        .get_peer          = tcp_v4_get_peer,
         .net_header_len    = sizeof(struct iphdr),
         .setsockopt        = ipv6_setsockopt,
         .getsockopt        = ipv6_getsockopt,
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index cd6cb7c3e563..9a009c66c8a3 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -54,8 +54,8 @@ int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2)
 {
         const struct in6_addr *sk_rcv_saddr6 = &inet6_sk(sk)->rcv_saddr;
         const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2);
-        __be32 sk1_rcv_saddr = inet_sk(sk)->inet_rcv_saddr;
-        __be32 sk2_rcv_saddr = inet_rcv_saddr(sk2);
+        __be32 sk1_rcv_saddr = sk_rcv_saddr(sk);
+        __be32 sk2_rcv_saddr = sk_rcv_saddr(sk2);
         int sk_ipv6only = ipv6_only_sock(sk);
         int sk2_ipv6only = inet_v6_ipv6only(sk2);
         int addr_type = ipv6_addr_type(sk_rcv_saddr6);
@@ -227,7 +227,7 @@ begin:
 
         if (result) {
 exact_match:
-                if (unlikely(!atomic_inc_not_zero(&result->sk_refcnt)))
+                if (unlikely(!atomic_inc_not_zero_hint(&result->sk_refcnt, 2)))
                         result = NULL;
                 else if (unlikely(compute_score2(result, net, saddr, sport,
                                   daddr, hnum, dif) < badness)) {
@@ -294,7 +294,7 @@ begin:
                 goto begin;
 
         if (result) {
-                if (unlikely(!atomic_inc_not_zero(&result->sk_refcnt)))
+                if (unlikely(!atomic_inc_not_zero_hint(&result->sk_refcnt, 2)))
                         result = NULL;
                 else if (unlikely(compute_score(result, net, hnum, saddr, sport,
                                         daddr, dport, dif) < badness)) {
@@ -602,7 +602,7 @@ static void flush_stack(struct sock **stack, unsigned int count,
 
                 sk = stack[i];
                 if (skb1) {
-                        if (sk_rcvqueues_full(sk, skb)) {
+                        if (sk_rcvqueues_full(sk, skb1)) {
                                 kfree_skb(skb1);
                                 goto drop;
                         }
diff --git a/net/ipv6/xfrm6_mode_tunnel.c b/net/ipv6/xfrm6_mode_tunnel.c
index b809812c8d30..645cb968d450 100644
--- a/net/ipv6/xfrm6_mode_tunnel.c
+++ b/net/ipv6/xfrm6_mode_tunnel.c
@@ -14,6 +14,7 @@
 #include <net/dsfield.h>
 #include <net/dst.h>
 #include <net/inet_ecn.h>
+#include <net/ip6_route.h>
 #include <net/ipv6.h>
 #include <net/xfrm.h>
 
@@ -53,7 +54,7 @@ static int xfrm6_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
         if (x->props.flags & XFRM_STATE_NOECN)
                 dsfield &= ~INET_ECN_MASK;
         ipv6_change_dsfield(top_iph, 0, dsfield);
-        top_iph->hop_limit = dst_metric(dst->child, RTAX_HOPLIMIT);
+        top_iph->hop_limit = ip6_dst_hoplimit(dst->child);
         ipv6_addr_copy(&top_iph->saddr, (struct in6_addr *)&x->props.saddr);
         ipv6_addr_copy(&top_iph->daddr, (struct in6_addr *)&x->id.daddr);
         return 0;
diff --git a/net/irda/ircomm/Makefile b/net/irda/ircomm/Makefile
index 48689458c086..ab23b5ba7e33 100644
--- a/net/irda/ircomm/Makefile
+++ b/net/irda/ircomm/Makefile
@@ -4,5 +4,5 @@
 
 obj-$(CONFIG_IRCOMM) += ircomm.o ircomm-tty.o
 
-ircomm-objs := ircomm_core.o ircomm_event.o ircomm_lmp.o ircomm_ttp.o
-ircomm-tty-objs := ircomm_tty.o ircomm_tty_attach.o ircomm_tty_ioctl.o ircomm_param.o
+ircomm-y := ircomm_core.o ircomm_event.o ircomm_lmp.o ircomm_ttp.o
+ircomm-tty-y := ircomm_tty.o ircomm_tty_attach.o ircomm_tty_ioctl.o ircomm_param.o
diff --git a/net/irda/irlan/Makefile b/net/irda/irlan/Makefile
index 77549bc8641b..94eefbc8e6b9 100644
--- a/net/irda/irlan/Makefile
+++ b/net/irda/irlan/Makefile
@@ -4,4 +4,4 @@
 
 obj-$(CONFIG_IRLAN) += irlan.o
 
-irlan-objs := irlan_common.o irlan_eth.o irlan_event.o irlan_client.o irlan_provider.o irlan_filter.o irlan_provider_event.o irlan_client_event.o
+irlan-y := irlan_common.o irlan_eth.o irlan_event.o irlan_client.o irlan_provider.o irlan_filter.o irlan_provider_event.o irlan_client_event.o
diff --git a/net/irda/irnet/Makefile b/net/irda/irnet/Makefile
index b3ee01e0def3..61c365c8a2a0 100644
--- a/net/irda/irnet/Makefile
+++ b/net/irda/irnet/Makefile
@@ -4,4 +4,4 @@
 
 obj-$(CONFIG_IRNET) += irnet.o
 
-irnet-objs := irnet_ppp.o irnet_irda.o
+irnet-y := irnet_ppp.o irnet_irda.o
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
index 522e219f3558..110efb704c9b 100644
--- a/net/l2tp/l2tp_ip.c
+++ b/net/l2tp/l2tp_ip.c
@@ -476,15 +476,13 @@ static int l2tp_ip_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *m
 
                 {
                         struct flowi fl = { .oif = sk->sk_bound_dev_if,
-                                            .nl_u = { .ip4_u = {
-                                                        .daddr = daddr,
-                                                        .saddr = inet->inet_saddr,
-                                                        .tos = RT_CONN_FLAGS(sk) } },
+                                            .fl4_dst = daddr,
+                                            .fl4_src = inet->inet_saddr,
+                                            .fl4_tos = RT_CONN_FLAGS(sk),
                                             .proto = sk->sk_protocol,
                                             .flags = inet_sk_flowi_flags(sk),
-                                            .uli_u = { .ports = {
-                                                         .sport = inet->inet_sport,
-                                                         .dport = inet->inet_dport } } };
+                                            .fl_ip_sport = inet->inet_sport,
+                                            .fl_ip_dport = inet->inet_dport };
 
                         /* If this fails, retransmit mechanism of transport layer will
                          * keep trying until route appears or the connection times
diff --git a/net/lapb/Makefile b/net/lapb/Makefile
index 53f7c90db163..fff797dfc88c 100644
--- a/net/lapb/Makefile
+++ b/net/lapb/Makefile
@@ -4,4 +4,4 @@
 
 obj-$(CONFIG_LAPB) += lapb.o
 
-lapb-objs := lapb_in.o lapb_out.o lapb_subr.o lapb_timer.o lapb_iface.o
+lapb-y := lapb_in.o lapb_out.o lapb_subr.o lapb_timer.o lapb_iface.o
diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
index e35dbe55f520..dfd3a648a551 100644
--- a/net/llc/af_llc.c
+++ b/net/llc/af_llc.c
@@ -316,7 +316,6 @@ static int llc_ui_bind(struct socket *sock, struct sockaddr *uaddr, int addrlen)
         if (unlikely(addr->sllc_family != AF_LLC))
                 goto out;
         rc = -ENODEV;
-        rtnl_lock();
         rcu_read_lock();
         if (sk->sk_bound_dev_if) {
                 llc->dev = dev_get_by_index_rcu(&init_net, sk->sk_bound_dev_if);
@@ -334,10 +333,11 @@ static int llc_ui_bind(struct socket *sock, struct sockaddr *uaddr, int addrlen)
                         }
                 }
         } else
-                llc->dev = dev_getbyhwaddr(&init_net, addr->sllc_arphrd,
+                llc->dev = dev_getbyhwaddr_rcu(&init_net, addr->sllc_arphrd,
                                            addr->sllc_mac);
+        if (llc->dev)
+                dev_hold(llc->dev);
         rcu_read_unlock();
-        rtnl_unlock();
         if (!llc->dev)
                 goto out;
         if (!addr->sllc_sap) {
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 4d6f8653ec88..798d9b9462e2 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -6,6 +6,7 @@ config MAC80211
         select CRYPTO_ARC4
         select CRYPTO_AES
         select CRC32
+        select AVERAGE
         ---help---
           This option enables the hardware independent IEEE 802.11
           networking stack.
diff --git a/net/mac80211/aes_ccm.c b/net/mac80211/aes_ccm.c
index d2b03e0851ef..4bd6ef0be380 100644
--- a/net/mac80211/aes_ccm.c
+++ b/net/mac80211/aes_ccm.c
@@ -147,6 +147,5 @@ struct crypto_cipher *ieee80211_aes_key_setup_encrypt(const u8 key[])
 
 void ieee80211_aes_key_free(struct crypto_cipher *tfm)
 {
-        if (tfm)
-                crypto_free_cipher(tfm);
+        crypto_free_cipher(tfm);
 }
diff --git a/net/mac80211/aes_cmac.c b/net/mac80211/aes_cmac.c
index b4d66cca76d6..d502b2684a66 100644
--- a/net/mac80211/aes_cmac.c
+++ b/net/mac80211/aes_cmac.c
@@ -128,6 +128,5 @@ struct crypto_cipher * ieee80211_aes_cmac_key_setup(const u8 key[])
 
 void ieee80211_aes_cmac_key_free(struct crypto_cipher *tfm)
 {
-        if (tfm)
-                crypto_free_cipher(tfm);
+        crypto_free_cipher(tfm);
 }
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index 720b7a84af59..f138b195d657 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -129,9 +129,7 @@ static void sta_rx_agg_reorder_timer_expired(unsigned long data)
                         timer_to_tid[0]);
 
         rcu_read_lock();
-        spin_lock(&sta->lock);
         ieee80211_release_reorder_timeout(sta, *ptid);
-        spin_unlock(&sta->lock);
         rcu_read_unlock();
 }
 
@@ -256,7 +254,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
         }
 
         /* prepare A-MPDU MLME for Rx aggregation */
-        tid_agg_rx = kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC);
+        tid_agg_rx = kmalloc(sizeof(struct tid_ampdu_rx), GFP_KERNEL);
         if (!tid_agg_rx) {
 #ifdef CONFIG_MAC80211_HT_DEBUG
                 if (net_ratelimit())
@@ -280,9 +278,9 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
 
         /* prepare reordering buffer */
         tid_agg_rx->reorder_buf =
-                kcalloc(buf_size, sizeof(struct sk_buff *), GFP_ATOMIC);
+                kcalloc(buf_size, sizeof(struct sk_buff *), GFP_KERNEL);
         tid_agg_rx->reorder_time =
-                kcalloc(buf_size, sizeof(unsigned long), GFP_ATOMIC);
+                kcalloc(buf_size, sizeof(unsigned long), GFP_KERNEL);
         if (!tid_agg_rx->reorder_buf || !tid_agg_rx->reorder_time) {
 #ifdef CONFIG_MAC80211_HT_DEBUG
                 if (net_ratelimit())
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 18bd0e550600..c30b8b72eedb 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -19,9 +19,10 @@
 #include "rate.h"
 #include "mesh.h"
 
-static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
-                               enum nl80211_iftype type, u32 *flags,
-                               struct vif_params *params)
+static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
+                                              enum nl80211_iftype type,
+                                              u32 *flags,
+                                              struct vif_params *params)
 {
         struct ieee80211_local *local = wiphy_priv(wiphy);
         struct net_device *dev;
@@ -29,12 +30,15 @@ static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
         int err;
 
         err = ieee80211_if_add(local, name, &dev, type, params);
-        if (err || type != NL80211_IFTYPE_MONITOR || !flags)
-                return err;
+        if (err)
+                return ERR_PTR(err);
 
-        sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-        sdata->u.mntr_flags = *flags;
-        return 0;
+        if (type == NL80211_IFTYPE_MONITOR && flags) {
+                sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+                sdata->u.mntr_flags = *flags;
+        }
+
+        return dev;
 }
 
 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
@@ -56,11 +60,6 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
         if (ret)
                 return ret;
 
-        if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
-                ieee80211_sdata_set_mesh_id(sdata,
-                                            params->mesh_id_len,
-                                            params->mesh_id);
-
         if (type == NL80211_IFTYPE_AP_VLAN &&
             params && params->use_4addr == 0)
                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
@@ -343,8 +342,9 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 
         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
-                sinfo->filled |= STATION_INFO_SIGNAL;
+                sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
                 sinfo->signal = (s8)sta->last_signal;
+                sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
         }
 
         sinfo->txrate.flags = 0;
@@ -999,9 +999,9 @@ static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
         return (mask >> (parm-1)) & 0x1;
 }
 
-static int ieee80211_set_mesh_params(struct wiphy *wiphy,
-                                struct net_device *dev,
-                                const struct mesh_config *nconf, u32 mask)
+static int ieee80211_update_mesh_params(struct wiphy *wiphy,
+                                        struct net_device *dev, u32 mask,
+                                        const struct mesh_config *nconf)
 {
         struct mesh_config *conf;
         struct ieee80211_sub_if_data *sdata;
@@ -1024,6 +1024,8 @@ static int ieee80211_set_mesh_params(struct wiphy *wiphy,
                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
+        if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
+                conf->dot11MeshTTL = nconf->element_ttl;
         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
                 conf->auto_open_plinks = nconf->auto_open_plinks;
         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
@@ -1050,6 +1052,30 @@ static int ieee80211_set_mesh_params(struct wiphy *wiphy,
         return 0;
 }
 
+static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
+                               const struct mesh_config *conf,
+                               const struct mesh_setup *setup)
+{
+        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+        struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+
+        memcpy(&sdata->u.mesh.mshcfg, conf, sizeof(struct mesh_config));
+        ifmsh->mesh_id_len = setup->mesh_id_len;
+        memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
+
+        ieee80211_start_mesh(sdata);
+
+        return 0;
+}
+
+static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
+{
+        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+        ieee80211_stop_mesh(sdata);
+
+        return 0;
+}
 #endif
 
 static int ieee80211_change_bss(struct wiphy *wiphy,
@@ -1108,6 +1134,12 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
         }
 
+        if (params->ht_opmode >= 0) {
+                sdata->vif.bss_conf.ht_operation_mode =
+                        (u16) params->ht_opmode;
+                changed |= BSS_CHANGED_HT;
+        }
+
         ieee80211_bss_info_change_notify(sdata, changed);
 
         return 0;
@@ -1299,6 +1331,13 @@ static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
         struct ieee80211_local *local = wiphy_priv(wiphy);
         int err;
 
+        if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
+                err = drv_set_frag_threshold(local, wiphy->frag_threshold);
+
+                if (err)
+                        return err;
+        }
+
         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
                 err = drv_set_coverage_class(local, wiphy->coverage_class);
 
@@ -1544,27 +1583,54 @@ static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
 }
 
+static enum work_done_result
+ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
+{
+        /*
+         * Use the data embedded in the work struct for reporting
+         * here so if the driver mangled the SKB before dropping
+         * it (which is the only way we really should get here)
+         * then we don't report mangled data.
+         *
+         * If there was no wait time, then by the time we get here
+         * the driver will likely not have reported the status yet,
+         * so in that case userspace will have to deal with it.
+         */
+
+        if (wk->offchan_tx.wait && wk->offchan_tx.frame)
+                cfg80211_mgmt_tx_status(wk->sdata->dev,
+                                        (unsigned long) wk->offchan_tx.frame,
+                                        wk->ie, wk->ie_len, false, GFP_KERNEL);
+
+        return WORK_DONE_DESTROY;
+}
+
 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
-                             struct ieee80211_channel *chan,
+                             struct ieee80211_channel *chan, bool offchan,
                              enum nl80211_channel_type channel_type,
-                             bool channel_type_valid,
+                             bool channel_type_valid, unsigned int wait,
                              const u8 *buf, size_t len, u64 *cookie)
 {
         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
         struct ieee80211_local *local = sdata->local;
         struct sk_buff *skb;
         struct sta_info *sta;
+        struct ieee80211_work *wk;
         const struct ieee80211_mgmt *mgmt = (void *)buf;
         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
                     IEEE80211_TX_CTL_REQ_TX_STATUS;
+        bool is_offchan = false;
 
         /* Check that we are on the requested channel for transmission */
         if (chan != local->tmp_channel &&
             chan != local->oper_channel)
-                return -EBUSY;
+                is_offchan = true;
         if (channel_type_valid &&
             (channel_type != local->tmp_channel_type &&
              channel_type != local->_oper_channel_type))
+                is_offchan = true;
+
+        if (is_offchan && !offchan)
                 return -EBUSY;
 
         switch (sdata->vif.type) {
@@ -1598,12 +1664,70 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
         IEEE80211_SKB_CB(skb)->flags = flags;
 
         skb->dev = sdata->dev;
-        ieee80211_tx_skb(sdata, skb);
 
         *cookie = (unsigned long) skb;
+
+        /*
+         * Can transmit right away if the channel was the
+         * right one and there's no wait involved... If a
+         * wait is involved, we might otherwise not be on
+         * the right channel for long enough!
+         */
+        if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
+                ieee80211_tx_skb(sdata, skb);
+                return 0;
+        }
+
+        wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
+        if (!wk) {
+                kfree_skb(skb);
+                return -ENOMEM;
+        }
+
+        wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
+        wk->chan = chan;
+        wk->sdata = sdata;
+        wk->done = ieee80211_offchan_tx_done;
+        wk->offchan_tx.frame = skb;
+        wk->offchan_tx.wait = wait;
+        wk->ie_len = len;
+        memcpy(wk->ie, buf, len);
+
+        ieee80211_add_work(wk);
         return 0;
 }
 
+static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
+                                         struct net_device *dev,
+                                         u64 cookie)
+{
+        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+        struct ieee80211_local *local = sdata->local;
+        struct ieee80211_work *wk;
+        int ret = -ENOENT;
+
+        mutex_lock(&local->mtx);
+        list_for_each_entry(wk, &local->work_list, list) {
+                if (wk->sdata != sdata)
+                        continue;
+
+                if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
+                        continue;
+
+                if (cookie != (unsigned long) wk->offchan_tx.frame)
+                        continue;
+
+                wk->timeout = jiffies;
+
+                ieee80211_queue_work(&local->hw, &local->work_work);
+                ret = 0;
+                break;
+        }
+        mutex_unlock(&local->mtx);
+
+        return ret;
+}
+
 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
                                           struct net_device *dev,
                                           u16 frame_type, bool reg)
@@ -1621,6 +1745,23 @@ static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
 }
 
+static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
+{
+        struct ieee80211_local *local = wiphy_priv(wiphy);
+
+        if (local->started)
+                return -EOPNOTSUPP;
+
+        return drv_set_antenna(local, tx_ant, rx_ant);
+}
+
+static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
+{
+        struct ieee80211_local *local = wiphy_priv(wiphy);
+
+        return drv_get_antenna(local, tx_ant, rx_ant);
+}
+
 struct cfg80211_ops mac80211_config_ops = {
         .add_virtual_intf = ieee80211_add_iface,
         .del_virtual_intf = ieee80211_del_iface,
@@ -1645,8 +1786,10 @@ struct cfg80211_ops mac80211_config_ops = {
         .change_mpath = ieee80211_change_mpath,
         .get_mpath = ieee80211_get_mpath,
         .dump_mpath = ieee80211_dump_mpath,
-        .set_mesh_params = ieee80211_set_mesh_params,
+        .update_mesh_params = ieee80211_update_mesh_params,
         .get_mesh_params = ieee80211_get_mesh_params,
+        .join_mesh = ieee80211_join_mesh,
+        .leave_mesh = ieee80211_leave_mesh,
 #endif
         .change_bss = ieee80211_change_bss,
         .set_txq_params = ieee80211_set_txq_params,
@@ -1671,6 +1814,9 @@ struct cfg80211_ops mac80211_config_ops = {
         .remain_on_channel = ieee80211_remain_on_channel,
         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
         .mgmt_tx = ieee80211_mgmt_tx,
+        .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
         .mgmt_frame_register = ieee80211_mgmt_frame_register,
+        .set_antenna = ieee80211_set_antenna,
+        .get_antenna = ieee80211_get_antenna,
 };
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index 18260aa99c56..1f02e599a318 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -21,16 +21,30 @@ int mac80211_open_file_generic(struct inode *inode, struct file *file)
         return 0;
 }
 
-#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...)              \
+#define DEBUGFS_FORMAT_BUFFER_SIZE 100
+
+int mac80211_format_buffer(char __user *userbuf, size_t count,
+                                  loff_t *ppos, char *fmt, ...)
+{
+        va_list args;
+        char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
+        int res;
+
+        va_start(args, fmt);
+        res = vscnprintf(buf, sizeof(buf), fmt, args);
+        va_end(args);
+
+        return simple_read_from_buffer(userbuf, count, ppos, buf, res);
+}
+
+#define DEBUGFS_READONLY_FILE(name, fmt, value...)                      \
 static ssize_t name## _read(struct file *file, char __user *userbuf,    \
                             size_t count, loff_t *ppos)                 \
 {                                                                       \
         struct ieee80211_local *local = file->private_data;             \
-        char buf[buflen];                                               \
-        int res;                                                        \
                                                                         \
-        res = scnprintf(buf, buflen, fmt "\n", ##value);                \
-        return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
+        return mac80211_format_buffer(userbuf, count, ppos,             \
+                                      fmt "\n", ##value);               \
 }                                                                       \
                                                                         \
 static const struct file_operations name## _ops = {                     \
@@ -46,13 +60,13 @@ static const struct file_operations name## _ops = {			\
         debugfs_create_file(#name, mode, phyd, local, &name## _ops);
 
 
-DEBUGFS_READONLY_FILE(frequency, 20, "%d",
+DEBUGFS_READONLY_FILE(frequency, "%d",
                       local->hw.conf.channel->center_freq);
-DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
+DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
                       local->total_ps_buffered);
-DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x",
+DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
                       local->wep_iv & 0xffffff);
-DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
+DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
         local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
 
 static ssize_t tsf_read(struct file *file, char __user *user_buf,
@@ -60,13 +74,11 @@ static ssize_t tsf_read(struct file *file, char __user *user_buf,
 {
         struct ieee80211_local *local = file->private_data;
         u64 tsf;
-        char buf[100];
 
         tsf = drv_get_tsf(local);
 
-        snprintf(buf, sizeof(buf), "0x%016llx\n", (unsigned long long) tsf);
-
-        return simple_read_from_buffer(user_buf, count, ppos, buf, 19);
+        return mac80211_format_buffer(user_buf, count, ppos, "0x%016llx\n",
+                                      (unsigned long long) tsf);
 }
 
 static ssize_t tsf_write(struct file *file,
@@ -131,12 +143,9 @@ static ssize_t noack_read(struct file *file, char __user *user_buf,
                           size_t count, loff_t *ppos)
 {
         struct ieee80211_local *local = file->private_data;
-        int res;
-        char buf[10];
 
-        res = scnprintf(buf, sizeof(buf), "%d\n", local->wifi_wme_noack_test);
-
-        return simple_read_from_buffer(user_buf, count, ppos, buf, res);
+        return mac80211_format_buffer(user_buf, count, ppos, "%d\n",
+                                      local->wifi_wme_noack_test);
 }
 
 static ssize_t noack_write(struct file *file,
@@ -168,12 +177,8 @@ static ssize_t uapsd_queues_read(struct file *file, char __user *user_buf,
                                  size_t count, loff_t *ppos)
 {
         struct ieee80211_local *local = file->private_data;
-        int res;
-        char buf[10];
-
-        res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_queues);
-
-        return simple_read_from_buffer(user_buf, count, ppos, buf, res);
+        return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
+                                      local->uapsd_queues);
 }
 
 static ssize_t uapsd_queues_write(struct file *file,
@@ -215,12 +220,9 @@ static ssize_t uapsd_max_sp_len_read(struct file *file, char __user *user_buf,
                                      size_t count, loff_t *ppos)
 {
         struct ieee80211_local *local = file->private_data;
-        int res;
-        char buf[10];
 
-        res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_max_sp_len);
-
-        return simple_read_from_buffer(user_buf, count, ppos, buf, res);
+        return mac80211_format_buffer(user_buf, count, ppos, "0x%x\n",
+                                      local->uapsd_max_sp_len);
 }
 
 static ssize_t uapsd_max_sp_len_write(struct file *file,
diff --git a/net/mac80211/debugfs.h b/net/mac80211/debugfs.h
index 09cc9be34796..7c87529630f5 100644
--- a/net/mac80211/debugfs.h
+++ b/net/mac80211/debugfs.h
@@ -4,6 +4,8 @@
 #ifdef CONFIG_MAC80211_DEBUGFS
 extern void debugfs_hw_add(struct ieee80211_local *local);
 extern int mac80211_open_file_generic(struct inode *inode, struct file *file);
+extern int mac80211_format_buffer(char __user *userbuf, size_t count,
+                                  loff_t *ppos, char *fmt, ...);
 #else
 static inline void debugfs_hw_add(struct ieee80211_local *local)
 {
diff --git a/net/mac80211/debugfs_key.c b/net/mac80211/debugfs_key.c
index 1243d1db5c59..5822a6ce7671 100644
--- a/net/mac80211/debugfs_key.c
+++ b/net/mac80211/debugfs_key.c
@@ -15,18 +15,17 @@
 #include "debugfs.h"
 #include "debugfs_key.h"
 
-#define KEY_READ(name, prop, buflen, format_string)                     \
+#define KEY_READ(name, prop, format_string)                             \
 static ssize_t key_##name##_read(struct file *file,                     \
                                  char __user *userbuf,                  \
                                  size_t count, loff_t *ppos)            \
 {                                                                       \
-        char buf[buflen];                                               \
         struct ieee80211_key *key = file->private_data;                 \
-        int res = scnprintf(buf, buflen, format_string, key->prop);     \
-        return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
+        return mac80211_format_buffer(userbuf, count, ppos,             \
+                                      format_string, key->prop);        \
 }
-#define KEY_READ_D(name) KEY_READ(name, name, 20, "%d\n")
-#define KEY_READ_X(name) KEY_READ(name, name, 20, "0x%x\n")
+#define KEY_READ_D(name) KEY_READ(name, name, "%d\n")
+#define KEY_READ_X(name) KEY_READ(name, name, "0x%x\n")
 
 #define KEY_OPS(name)                                                   \
 static const struct file_operations key_ ##name## _ops = {              \
@@ -39,9 +38,9 @@ static const struct file_operations key_ ##name## _ops = {		\
                  KEY_READ_##format(name)                                \
                  KEY_OPS(name)
 
-#define KEY_CONF_READ(name, buflen, format_string)                      \
-        KEY_READ(conf_##name, conf.name, buflen, format_string)
-#define KEY_CONF_READ_D(name) KEY_CONF_READ(name, 20, "%d\n")
+#define KEY_CONF_READ(name, format_string)                              \
+        KEY_READ(conf_##name, conf.name, format_string)
+#define KEY_CONF_READ_D(name) KEY_CONF_READ(name, "%d\n")
 
 #define KEY_CONF_OPS(name)                                              \
 static const struct file_operations key_ ##name## _ops = {              \
@@ -59,7 +58,7 @@ KEY_CONF_FILE(keyidx, D);
 KEY_CONF_FILE(hw_key_idx, D);
 KEY_FILE(flags, X);
 KEY_FILE(tx_rx_count, D);
-KEY_READ(ifindex, sdata->name, IFNAMSIZ + 2, "%s\n");
+KEY_READ(ifindex, sdata->name, "%s\n");
 KEY_OPS(ifindex);
 
 static ssize_t key_algorithm_read(struct file *file,
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index cbdf36d7841c..2dabdf7680d0 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -251,6 +251,7 @@ IEEE80211_IF_FILE(dot11MeshConfirmTimeout,
 IEEE80211_IF_FILE(dot11MeshHoldingTimeout,
                 u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC);
 IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC);
+IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC);
 IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC);
 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks,
                 u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC);
@@ -355,6 +356,7 @@ static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
         MESHPARAMS_ADD(dot11MeshConfirmTimeout);
         MESHPARAMS_ADD(dot11MeshHoldingTimeout);
         MESHPARAMS_ADD(dot11MeshTTL);
+        MESHPARAMS_ADD(element_ttl);
         MESHPARAMS_ADD(auto_open_plinks);
         MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
         MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 4601fea1784d..8bb5af85f469 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -17,20 +17,18 @@
 
 /* sta attributtes */
 
-#define STA_READ(name, buflen, field, format_string)                    \
+#define STA_READ(name, field, format_string)                            \
 static ssize_t sta_ ##name## _read(struct file *file,                   \
                                    char __user *userbuf,                \
                                    size_t count, loff_t *ppos)          \
 {                                                                       \
-        int res;                                                        \
         struct sta_info *sta = file->private_data;                      \
-        char buf[buflen];                                               \
-        res = scnprintf(buf, buflen, format_string, sta->field);        \
-        return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
+        return mac80211_format_buffer(userbuf, count, ppos,             \
+                                      format_string, sta->field);       \
 }
-#define STA_READ_D(name, field) STA_READ(name, 20, field, "%d\n")
-#define STA_READ_U(name, field) STA_READ(name, 20, field, "%u\n")
-#define STA_READ_S(name, field) STA_READ(name, 20, field, "%s\n")
+#define STA_READ_D(name, field) STA_READ(name, field, "%d\n")
+#define STA_READ_U(name, field) STA_READ(name, field, "%u\n")
+#define STA_READ_S(name, field) STA_READ(name, field, "%s\n")
 
 #define STA_OPS(name)                                                   \
 static const struct file_operations sta_ ##name## _ops = {              \
@@ -79,22 +77,18 @@ static ssize_t sta_num_ps_buf_frames_read(struct file *file,
                                           char __user *userbuf,
                                           size_t count, loff_t *ppos)
 {
-        char buf[20];
         struct sta_info *sta = file->private_data;
-        int res = scnprintf(buf, sizeof(buf), "%u\n",
-                            skb_queue_len(&sta->ps_tx_buf));
-        return simple_read_from_buffer(userbuf, count, ppos, buf, res);
+        return mac80211_format_buffer(userbuf, count, ppos, "%u\n",
+                                      skb_queue_len(&sta->ps_tx_buf));
 }
 STA_OPS(num_ps_buf_frames);
 
 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
                                     size_t count, loff_t *ppos)
 {
-        char buf[20];
         struct sta_info *sta = file->private_data;
-        int res = scnprintf(buf, sizeof(buf), "%d\n",
-                            jiffies_to_msecs(jiffies - sta->last_rx));
-        return simple_read_from_buffer(userbuf, count, ppos, buf, res);
+        return mac80211_format_buffer(userbuf, count, ppos, "%d\n",
+                                      jiffies_to_msecs(jiffies - sta->last_rx));
 }
 STA_OPS(inactive_ms);
 
@@ -118,34 +112,35 @@ static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
         char buf[71 + STA_TID_NUM * 40], *p = buf;
         int i;
         struct sta_info *sta = file->private_data;
+        struct tid_ampdu_rx *tid_rx;
+        struct tid_ampdu_tx *tid_tx;
+
+        rcu_read_lock();
 
-        spin_lock_bh(&sta->lock);
         p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
                         sta->ampdu_mlme.dialog_token_allocator + 1);
         p += scnprintf(p, sizeof(buf) + buf - p,
                        "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tpending\n");
+
         for (i = 0; i < STA_TID_NUM; i++) {
+                tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[i]);
+                tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[i]);
+
                 p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
-                p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
-                                !!sta->ampdu_mlme.tid_rx[i]);
+                p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx);
                 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
-                                sta->ampdu_mlme.tid_rx[i] ?
-                                sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
+                                tid_rx ? tid_rx->dialog_token : 0);
                 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
-                                sta->ampdu_mlme.tid_rx[i] ?
-                                sta->ampdu_mlme.tid_rx[i]->ssn : 0);
+                                tid_rx ? tid_rx->ssn : 0);
 
-                p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
-                                !!sta->ampdu_mlme.tid_tx[i]);
+                p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_tx);
                 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
-                                sta->ampdu_mlme.tid_tx[i] ?
-                                sta->ampdu_mlme.tid_tx[i]->dialog_token : 0);
+                                tid_tx ? tid_tx->dialog_token : 0);
                 p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
-                                sta->ampdu_mlme.tid_tx[i] ?
-                                skb_queue_len(&sta->ampdu_mlme.tid_tx[i]->pending) : 0);
+                                tid_tx ? skb_queue_len(&tid_tx->pending) : 0);
                 p += scnprintf(p, sizeof(buf) + buf - p, "\n");
         }
-        spin_unlock_bh(&sta->lock);
+        rcu_read_unlock();
 
         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 }
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index 16983825f8e8..4244554d218a 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -233,6 +233,20 @@ static inline void drv_get_tkip_seq(struct ieee80211_local *local,
         trace_drv_get_tkip_seq(local, hw_key_idx, iv32, iv16);
 }
 
+static inline int drv_set_frag_threshold(struct ieee80211_local *local,
+                                        u32 value)
+{
+        int ret = 0;
+
+        might_sleep();
+
+        trace_drv_set_frag_threshold(local, value);
+        if (local->ops->set_frag_threshold)
+                ret = local->ops->set_frag_threshold(&local->hw, value);
+        trace_drv_return_int(local, ret);
+        return ret;
+}
+
 static inline int drv_set_rts_threshold(struct ieee80211_local *local,
                                         u32 value)
 {
@@ -428,4 +442,27 @@ static inline void drv_channel_switch(struct ieee80211_local *local,
         trace_drv_return_void(local);
 }
 
+
+static inline int drv_set_antenna(struct ieee80211_local *local,
+                                  u32 tx_ant, u32 rx_ant)
+{
+        int ret = -EOPNOTSUPP;
+        might_sleep();
+        if (local->ops->set_antenna)
+                ret = local->ops->set_antenna(&local->hw, tx_ant, rx_ant);
+        trace_drv_set_antenna(local, tx_ant, rx_ant, ret);
+        return ret;
+}
+
+static inline int drv_get_antenna(struct ieee80211_local *local,
+                                  u32 *tx_ant, u32 *rx_ant)
+{
+        int ret = -EOPNOTSUPP;
+        might_sleep();
+        if (local->ops->get_antenna)
+                ret = local->ops->get_antenna(&local->hw, tx_ant, rx_ant);
+        trace_drv_get_antenna(local, *tx_ant, *rx_ant, ret);
+        return ret;
+}
+
 #endif /* __MAC80211_DRIVER_OPS */
diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h
index 6831fb1641c8..c2772f23ac9c 100644
--- a/net/mac80211/driver-trace.h
+++ b/net/mac80211/driver-trace.h
@@ -531,6 +531,27 @@ TRACE_EVENT(drv_get_tkip_seq,
         )
 );
 
+TRACE_EVENT(drv_set_frag_threshold,
+        TP_PROTO(struct ieee80211_local *local, u32 value),
+
+        TP_ARGS(local, value),
+
+        TP_STRUCT__entry(
+                LOCAL_ENTRY
+                __field(u32, value)
+        ),
+
+        TP_fast_assign(
+                LOCAL_ASSIGN;
+                __entry->value = value;
+        ),
+
+        TP_printk(
+                LOCAL_PR_FMT " value:%d",
+                LOCAL_PR_ARG, __entry->value
+        )
+);
+
 TRACE_EVENT(drv_set_rts_threshold,
         TP_PROTO(struct ieee80211_local *local, u32 value),
 
@@ -862,6 +883,56 @@ TRACE_EVENT(drv_channel_switch,
         )
 );
 
+TRACE_EVENT(drv_set_antenna,
+        TP_PROTO(struct ieee80211_local *local, u32 tx_ant, u32 rx_ant, int ret),
+
+        TP_ARGS(local, tx_ant, rx_ant, ret),
+
+        TP_STRUCT__entry(
+                LOCAL_ENTRY
+                __field(u32, tx_ant)
+                __field(u32, rx_ant)
+                __field(int, ret)
+        ),
+
+        TP_fast_assign(
+                LOCAL_ASSIGN;
+                __entry->tx_ant = tx_ant;
+                __entry->rx_ant = rx_ant;
+                __entry->ret = ret;
+        ),
+
+        TP_printk(
+                LOCAL_PR_FMT " tx_ant:%d rx_ant:%d ret:%d",
+                LOCAL_PR_ARG, __entry->tx_ant, __entry->rx_ant, __entry->ret
+        )
+);
+
+TRACE_EVENT(drv_get_antenna,
+        TP_PROTO(struct ieee80211_local *local, u32 tx_ant, u32 rx_ant, int ret),
+
+        TP_ARGS(local, tx_ant, rx_ant, ret),
+
+        TP_STRUCT__entry(
+                LOCAL_ENTRY
+                __field(u32, tx_ant)
+                __field(u32, rx_ant)
+                __field(int, ret)
+        ),
+
+        TP_fast_assign(
+                LOCAL_ASSIGN;
+                __entry->tx_ant = tx_ant;
+                __entry->rx_ant = rx_ant;
+                __entry->ret = ret;
+        ),
+
+        TP_printk(
+                LOCAL_PR_FMT " tx_ant:%d rx_ant:%d ret:%d",
+                LOCAL_PR_ARG, __entry->tx_ant, __entry->rx_ant, __entry->ret
+        )
+);
+
 /*
  * Tracing for API calls that drivers call.
  */
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 077a93dd1671..53c7077ffd4f 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -919,6 +919,8 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 
         sdata->u.ibss.privacy = params->privacy;
         sdata->u.ibss.basic_rates = params->basic_rates;
+        memcpy(sdata->vif.bss_conf.mcast_rate, params->mcast_rate,
+               sizeof(params->mcast_rate));
 
         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index b80c38689927..72499fe5fc36 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -260,6 +260,7 @@ enum ieee80211_work_type {
         IEEE80211_WORK_ASSOC_BEACON_WAIT,
         IEEE80211_WORK_ASSOC,
         IEEE80211_WORK_REMAIN_ON_CHANNEL,
+        IEEE80211_WORK_OFFCHANNEL_TX,
 };
 
 /**
@@ -320,6 +321,10 @@ struct ieee80211_work {
                 struct {
                         u32 duration;
                 } remain;
+                struct {
+                        struct sk_buff *frame;
+                        u32 wait;
+                } offchan_tx;
         };
 
         int ie_len;
@@ -349,8 +354,10 @@ struct ieee80211_if_managed {
         struct work_struct chswitch_work;
         struct work_struct beacon_connection_loss_work;
 
+        unsigned long beacon_timeout;
         unsigned long probe_timeout;
         int probe_send_count;
+        bool nullfunc_failed;
 
         struct mutex mtx;
         struct cfg80211_bss *associated;
@@ -602,19 +609,6 @@ struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
         return container_of(p, struct ieee80211_sub_if_data, vif);
 }
 
-static inline void
-ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
-                            u8 mesh_id_len, u8 *mesh_id)
-{
-#ifdef CONFIG_MAC80211_MESH
-        struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
-        ifmsh->mesh_id_len = mesh_id_len;
-        memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
-#else
-        WARN_ON(1);
-#endif
-}
-
 enum sdata_queue_type {
         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
@@ -1264,6 +1258,8 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
                              int powersave);
 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
                              struct ieee80211_hdr *hdr);
+void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
+                             struct ieee80211_hdr *hdr, bool ack);
 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
 
 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
@@ -1278,6 +1274,9 @@ void ieee80211_add_pending_skb(struct ieee80211_local *local,
                                struct sk_buff *skb);
 int ieee80211_add_pending_skbs(struct ieee80211_local *local,
                                struct sk_buff_head *skbs);
+int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
+                                  struct sk_buff_head *skbs,
+                                  void (*fn)(void *data), void *data);
 
 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
                          u16 transaction, u16 auth_alg,
@@ -1287,6 +1286,10 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
                              const u8 *ie, size_t ie_len,
                              enum ieee80211_band band, u32 rate_mask,
                              u8 channel);
+struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
+                                          u8 *dst,
+                                          const u8 *ssid, size_t ssid_len,
+                                          const u8 *ie, size_t ie_len);
 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
                               const u8 *ssid, size_t ssid_len,
                               const u8 *ie, size_t ie_len);
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 7aa85591dbe7..f0f11bb794af 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -197,11 +197,6 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up)
                 sdata->bss = &sdata->u.ap;
                 break;
         case NL80211_IFTYPE_MESH_POINT:
-                if (!ieee80211_vif_is_mesh(&sdata->vif))
-                        break;
-                /* mesh ifaces must set allmulti to forward mcast traffic */
-                atomic_inc(&local->iff_allmultis);
-                break;
         case NL80211_IFTYPE_STATION:
         case NL80211_IFTYPE_MONITOR:
         case NL80211_IFTYPE_ADHOC:
@@ -273,12 +268,7 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up)
                                 goto err_stop;
                 }
 
-                if (ieee80211_vif_is_mesh(&sdata->vif)) {
-                        local->fif_other_bss++;
-                        ieee80211_configure_filter(local);
-
-                        ieee80211_start_mesh(sdata);
-                } else if (sdata->vif.type == NL80211_IFTYPE_AP) {
+                if (sdata->vif.type == NL80211_IFTYPE_AP) {
                         local->fif_pspoll++;
                         local->fif_probe_req++;
 
@@ -503,18 +493,6 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
                 ieee80211_adjust_monitor_flags(sdata, -1);
                 ieee80211_configure_filter(local);
                 break;
-        case NL80211_IFTYPE_MESH_POINT:
-                if (ieee80211_vif_is_mesh(&sdata->vif)) {
-                        /* other_bss and allmulti are always set on mesh
-                         * ifaces */
-                        local->fif_other_bss--;
-                        atomic_dec(&local->iff_allmultis);
-
-                        ieee80211_configure_filter(local);
-
-                        ieee80211_stop_mesh(sdata);
-                }
-                /* fall through */
         default:
                 flush_work(&sdata->work);
                 /*
@@ -1204,12 +1182,6 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
         if (ret)
                 goto fail;
 
-        if (ieee80211_vif_is_mesh(&sdata->vif) &&
-            params && params->mesh_id_len)
-                ieee80211_sdata_set_mesh_id(sdata,
-                                            params->mesh_id_len,
-                                            params->mesh_id);
-
         mutex_lock(&local->iflist_mtx);
         list_add_tail_rcu(&sdata->list, &local->interfaces);
         mutex_unlock(&local->iflist_mtx);
diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index ccd676b2f599..72df1ca7299b 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -84,10 +84,17 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
                 goto out_unsupported;
 
         sdata = key->sdata;
-        if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+        if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
+                /*
+                 * The driver doesn't know anything about VLAN interfaces.
+                 * Hence, don't send GTKs for VLAN interfaces to the driver.
+                 */
+                if (!(key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE))
+                        goto out_unsupported;
                 sdata = container_of(sdata->bss,
                                      struct ieee80211_sub_if_data,
                                      u.ap);
+        }
 
         ret = drv_set_key(key->local, SET_KEY, sdata, sta, &key->conf);
 
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 107a0cbe52ac..973fee9f7d69 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -245,9 +245,12 @@ void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
                                 sdata->vif.bss_conf.enable_beacon =
                                         !!sdata->u.ibss.presp;
                                 break;
+#ifdef CONFIG_MAC80211_MESH
                         case NL80211_IFTYPE_MESH_POINT:
-                                sdata->vif.bss_conf.enable_beacon = true;
+                                sdata->vif.bss_conf.enable_beacon =
+                                        !!sdata->u.mesh.mesh_id_len;
                                 break;
+#endif
                         default:
                                 /* not reached */
                                 WARN_ON(1);
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index c8a4f19ed13b..63e1188d5062 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -513,6 +513,11 @@ void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
         struct ieee80211_local *local = sdata->local;
 
+        local->fif_other_bss++;
+        /* mesh ifaces must set allmulti to forward mcast traffic */
+        atomic_inc(&local->iff_allmultis);
+        ieee80211_configure_filter(local);
+
         set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
         ieee80211_mesh_root_setup(ifmsh);
         ieee80211_queue_work(&local->hw, &sdata->work);
@@ -524,6 +529,13 @@ void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
 
 void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
 {
+        struct ieee80211_local *local = sdata->local;
+        struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+
+        ifmsh->mesh_id_len = 0;
+        ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
+        sta_info_flush(local, NULL);
+
         del_timer_sync(&sdata->u.mesh.housekeeping_timer);
         del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
         /*
@@ -534,6 +546,10 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
          * it no longer is.
          */
         cancel_work_sync(&sdata->work);
+
+        local->fif_other_bss--;
+        atomic_dec(&local->iff_allmultis);
+        ieee80211_configure_filter(local);
 }
 
 static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
@@ -663,26 +679,6 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
                     ieee80211_mesh_housekeeping_timer,
                     (unsigned long) sdata);
 
-        ifmsh->mshcfg.dot11MeshRetryTimeout = MESH_RET_T;
-        ifmsh->mshcfg.dot11MeshConfirmTimeout = MESH_CONF_T;
-        ifmsh->mshcfg.dot11MeshHoldingTimeout = MESH_HOLD_T;
-        ifmsh->mshcfg.dot11MeshMaxRetries = MESH_MAX_RETR;
-        ifmsh->mshcfg.dot11MeshTTL = MESH_TTL;
-        ifmsh->mshcfg.auto_open_plinks = true;
-        ifmsh->mshcfg.dot11MeshMaxPeerLinks =
-                MESH_MAX_ESTAB_PLINKS;
-        ifmsh->mshcfg.dot11MeshHWMPactivePathTimeout =
-                MESH_PATH_TIMEOUT;
-        ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval =
-                MESH_PREQ_MIN_INT;
-        ifmsh->mshcfg.dot11MeshHWMPnetDiameterTraversalTime =
-                MESH_DIAM_TRAVERSAL_TIME;
-        ifmsh->mshcfg.dot11MeshHWMPmaxPREQretries =
-                MESH_MAX_PREQ_RETRIES;
-        ifmsh->mshcfg.path_refresh_time =
-                MESH_PATH_REFRESH_TIME;
-        ifmsh->mshcfg.min_discovery_timeout =
-                MESH_MIN_DISCOVERY_TIMEOUT;
         ifmsh->accepting_plinks = true;
         ifmsh->preq_id = 0;
         ifmsh->sn = 0;
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 58e741128968..039d7fa0af74 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -175,33 +175,10 @@ struct mesh_rmc {
  */
 #define MESH_CFG_CMP_LEN        (IEEE80211_MESH_CONFIG_LEN - 2)
 
-/* Default values, timeouts in ms */
-#define MESH_TTL                31
-#define MESH_MAX_RETR           3
-#define MESH_RET_T              100
-#define MESH_CONF_T             100
-#define MESH_HOLD_T             100
-
-#define MESH_PATH_TIMEOUT       5000
-/* Minimum interval between two consecutive PREQs originated by the same
- * interface
- */
-#define MESH_PREQ_MIN_INT       10
-#define MESH_DIAM_TRAVERSAL_TIME 50
-/* A path will be refreshed if it is used PATH_REFRESH_TIME milliseconds before
- * timing out.  This way it will remain ACTIVE and no data frames will be
- * unnecesarily held in the pending queue.
- */
-#define MESH_PATH_REFRESH_TIME                  1000
-#define MESH_MIN_DISCOVERY_TIMEOUT (2 * MESH_DIAM_TRAVERSAL_TIME)
 #define MESH_DEFAULT_BEACON_INTERVAL            1000    /* in 1024 us units */
 
-#define MESH_MAX_PREQ_RETRIES 4
 #define MESH_PATH_EXPIRE (600 * HZ)
 
-/* Default maximum number of established plinks per interface */
-#define MESH_MAX_ESTAB_PLINKS   32
-
 /* Default maximum number of plinks per interface */
 #define MESH_MAX_PLINKS         256
 
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 829e08a657d0..5bf64d7112b3 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -232,7 +232,7 @@ int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
         *pos++ = WLAN_EID_PERR;
         *pos++ = ie_len;
         /* ttl */
-        *pos++ = MESH_TTL;
+        *pos++ = ttl;
         /* number of destinations */
         *pos++ = 1;
         /*
@@ -522,7 +522,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
 
         if (reply) {
                 lifetime = PREQ_IE_LIFETIME(preq_elem);
-                ttl = ifmsh->mshcfg.dot11MeshTTL;
+                ttl = ifmsh->mshcfg.element_ttl;
                 if (ttl != 0) {
                         mhwmp_dbg("replying to the PREQ\n");
                         mesh_path_sel_frame_tx(MPATH_PREP, 0, target_addr,
@@ -877,7 +877,7 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
                 sdata->u.mesh.last_sn_update = jiffies;
         }
         lifetime = default_lifetime(sdata);
-        ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
+        ttl = sdata->u.mesh.mshcfg.element_ttl;
         if (ttl == 0) {
                 sdata->u.mesh.mshstats.dropped_frames_ttl++;
                 spin_unlock_bh(&mpath->state_lock);
@@ -1013,5 +1013,6 @@ mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata)
         mesh_path_sel_frame_tx(MPATH_RANN, 0, sdata->vif.addr,
                                cpu_to_le32(++ifmsh->sn),
                                0, NULL, 0, broadcast_addr,
-                               0, MESH_TTL, 0, 0, 0, sdata);
+                               0, sdata->u.mesh.mshcfg.element_ttl,
+                               0, 0, 0, sdata);
 }
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index 349e466cf08b..8d65b47d9837 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -467,8 +467,8 @@ void mesh_plink_broken(struct sta_info *sta)
                         mpath->flags &= ~MESH_PATH_ACTIVE;
                         ++mpath->sn;
                         spin_unlock_bh(&mpath->state_lock);
-                        mesh_path_error_tx(MESH_TTL, mpath->dst,
-                                        cpu_to_le32(mpath->sn),
+                        mesh_path_error_tx(sdata->u.mesh.mshcfg.element_ttl,
+                                        mpath->dst, cpu_to_le32(mpath->sn),
                                         cpu_to_le16(PERR_RCODE_DEST_UNREACH),
                                         bcast, sdata);
                 } else
@@ -614,7 +614,8 @@ void mesh_path_discard_frame(struct sk_buff *skb,
                 mpath = mesh_path_lookup(da, sdata);
                 if (mpath)
                         sn = ++mpath->sn;
-                mesh_path_error_tx(MESH_TTL, skb->data, cpu_to_le32(sn),
+                mesh_path_error_tx(sdata->u.mesh.mshcfg.element_ttl, skb->data,
+                                   cpu_to_le32(sn),
                                    cpu_to_le16(PERR_RCODE_NO_ROUTE), ra, sdata);
         }
 
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index a3a9421555af..45fbb9e33746 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -28,13 +28,19 @@
 #include "rate.h"
 #include "led.h"
 
+#define IEEE80211_MAX_NULLFUNC_TRIES 2
 #define IEEE80211_MAX_PROBE_TRIES 5
 
 /*
- * beacon loss detection timeout
- * XXX: should depend on beacon interval
+ * Beacon loss timeout is calculated as N frames times the
+ * advertised beacon interval.  This may need to be somewhat
+ * higher than what hardware might detect to account for
+ * delays in the host processing frames. But since we also
+ * probe on beacon miss before declaring the connection lost
+ * default to what we want.
  */
-#define IEEE80211_BEACON_LOSS_TIME      (2 * HZ)
+#define IEEE80211_BEACON_LOSS_COUNT     7
+
 /*
  * Time the connection can be idle before we probe
  * it to see if we can still talk to the AP.
@@ -121,7 +127,7 @@ void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
                 return;
 
         mod_timer(&sdata->u.mgd.bcn_mon_timer,
-                  round_jiffies_up(jiffies + IEEE80211_BEACON_LOSS_TIME));
+                  round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
 }
 
 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
@@ -619,11 +625,12 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
                         /*
                          * Go to full PSM if the user configures a very low
                          * latency requirement.
-                         * The 2 second value is there for compatibility until
-                         * the PM_QOS_NETWORK_LATENCY is configured with real
-                         * values.
+                         * The 2000 second value is there for compatibility
+                         * until the PM_QOS_NETWORK_LATENCY is configured
+                         * with real values.
                          */
-                        if (latency > 1900000000 && latency != 2000000000)
+                        if (latency > (1900 * USEC_PER_MSEC) &&
+                            latency != (2000 * USEC_PER_SEC))
                                 timeout = 0;
                         else
                                 timeout = 100;
@@ -871,6 +878,9 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
         bss_info_changed |= ieee80211_handle_bss_capability(sdata,
                 cbss->capability, bss->has_erp_value, bss->erp_value);
 
+        sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
+                IEEE80211_BEACON_LOSS_COUNT * bss_conf->beacon_int));
+
         sdata->u.mgd.associated = cbss;
         memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
 
@@ -1026,6 +1036,54 @@ void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
         ieee80211_sta_reset_conn_monitor(sdata);
 }
 
+static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
+{
+        struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+
+        if (!(ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
+                              IEEE80211_STA_CONNECTION_POLL)))
+            return;
+
+        ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
+                          IEEE80211_STA_BEACON_POLL);
+        mutex_lock(&sdata->local->iflist_mtx);
+        ieee80211_recalc_ps(sdata->local, -1);
+        mutex_unlock(&sdata->local->iflist_mtx);
+
+        if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
+                return;
+
+        /*
+         * We've received a probe response, but are not sure whether
+         * we have or will be receiving any beacons or data, so let's
+         * schedule the timers again, just in case.
+         */
+        ieee80211_sta_reset_beacon_monitor(sdata);
+
+        mod_timer(&ifmgd->conn_mon_timer,
+                  round_jiffies_up(jiffies +
+                                   IEEE80211_CONNECTION_IDLE_TIME));
+}
+
+void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
+                             struct ieee80211_hdr *hdr, bool ack)
+{
+        if (!ieee80211_is_data(hdr->frame_control))
+            return;
+
+        if (ack)
+                ieee80211_sta_reset_conn_monitor(sdata);
+
+        if (ieee80211_is_nullfunc(hdr->frame_control) &&
+            sdata->u.mgd.probe_send_count > 0) {
+                if (ack)
+                        sdata->u.mgd.probe_send_count = 0;
+                else
+                        sdata->u.mgd.nullfunc_failed = true;
+                ieee80211_queue_work(&sdata->local->hw, &sdata->work);
+        }
+}
+
 static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
 {
         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
@@ -1041,8 +1099,20 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
         if (ifmgd->probe_send_count >= unicast_limit)
                 dst = NULL;
 
-        ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
-        ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid[1], NULL, 0);
+        /*
+         * When the hardware reports an accurate Tx ACK status, it's
+         * better to send a nullfunc frame instead of a probe request,
+         * as it will kick us off the AP quickly if we aren't associated
+         * anymore. The timeout will be reset if the frame is ACKed by
+         * the AP.
+         */
+        if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
+                ifmgd->nullfunc_failed = false;
+                ieee80211_send_nullfunc(sdata->local, sdata, 0);
+        } else {
+                ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
+                ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid[1], NULL, 0);
+        }
 
         ifmgd->probe_send_count++;
         ifmgd->probe_timeout = jiffies + IEEE80211_PROBE_WAIT;
@@ -1108,6 +1178,30 @@ static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
         mutex_unlock(&ifmgd->mtx);
 }
 
+struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
+                                          struct ieee80211_vif *vif)
+{
+        struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+        struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+        struct sk_buff *skb;
+        const u8 *ssid;
+
+        if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
+                return NULL;
+
+        ASSERT_MGD_MTX(ifmgd);
+
+        if (!ifmgd->associated)
+                return NULL;
+
+        ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
+        skb = ieee80211_build_probe_req(sdata, ifmgd->associated->bssid,
+                                        ssid + 2, ssid[1], NULL, 0);
+
+        return skb;
+}
+EXPORT_SYMBOL(ieee80211_ap_probereq_get);
+
 static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
 {
         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
@@ -1485,29 +1579,8 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
         ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false);
 
         if (ifmgd->associated &&
-            memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN) == 0 &&
-            ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
-                            IEEE80211_STA_CONNECTION_POLL)) {
-                ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
-                                  IEEE80211_STA_BEACON_POLL);
-                mutex_lock(&sdata->local->iflist_mtx);
-                ieee80211_recalc_ps(sdata->local, -1);
-                mutex_unlock(&sdata->local->iflist_mtx);
-
-                if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
-                        return;
-
-                /*
-                 * We've received a probe response, but are not sure whether
-                 * we have or will be receiving any beacons or data, so let's
-                 * schedule the timers again, just in case.
-                 */
-                ieee80211_sta_reset_beacon_monitor(sdata);
-
-                mod_timer(&ifmgd->conn_mon_timer,
-                          round_jiffies_up(jiffies +
-                                           IEEE80211_CONNECTION_IDLE_TIME));
-        }
+            memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN) == 0)
+                ieee80211_reset_ap_probe(sdata);
 }
 
 /*
@@ -1845,6 +1918,31 @@ static void ieee80211_sta_timer(unsigned long data)
         ieee80211_queue_work(&local->hw, &sdata->work);
 }
 
+static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
+                                          u8 *bssid)
+{
+        struct ieee80211_local *local = sdata->local;
+        struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+
+        ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
+                          IEEE80211_STA_BEACON_POLL);
+
+        ieee80211_set_disassoc(sdata, true, true);
+        mutex_unlock(&ifmgd->mtx);
+        mutex_lock(&local->mtx);
+        ieee80211_recalc_idle(local);
+        mutex_unlock(&local->mtx);
+        /*
+         * must be outside lock due to cfg80211,
+         * but that's not a problem.
+         */
+        ieee80211_send_deauth_disassoc(sdata, bssid,
+                        IEEE80211_STYPE_DEAUTH,
+                        WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
+                        NULL, true);
+        mutex_lock(&ifmgd->mtx);
+}
+
 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 {
         struct ieee80211_local *local = sdata->local;
@@ -1857,12 +1955,49 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
                             IEEE80211_STA_CONNECTION_POLL) &&
             ifmgd->associated) {
                 u8 bssid[ETH_ALEN];
+                int max_tries;
 
                 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
-                if (time_is_after_jiffies(ifmgd->probe_timeout))
-                        run_again(ifmgd, ifmgd->probe_timeout);
 
-                else if (ifmgd->probe_send_count < IEEE80211_MAX_PROBE_TRIES) {
+                if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+                        max_tries = IEEE80211_MAX_NULLFUNC_TRIES;
+                else
+                        max_tries = IEEE80211_MAX_PROBE_TRIES;
+
+                /* ACK received for nullfunc probing frame */
+                if (!ifmgd->probe_send_count)
+                        ieee80211_reset_ap_probe(sdata);
+                else if (ifmgd->nullfunc_failed) {
+                        if (ifmgd->probe_send_count < max_tries) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+                                wiphy_debug(local->hw.wiphy,
+                                            "%s: No ack for nullfunc frame to"
+                                            " AP %pM, try %d\n",
+                                            sdata->name, bssid,
+                                            ifmgd->probe_send_count);
+#endif
+                                ieee80211_mgd_probe_ap_send(sdata);
+                        } else {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+                                wiphy_debug(local->hw.wiphy,
+                                            "%s: No ack for nullfunc frame to"
+                                            " AP %pM, disconnecting.\n",
+                                            sdata->name, bssid);
+#endif
+                                ieee80211_sta_connection_lost(sdata, bssid);
+                        }
+                } else if (time_is_after_jiffies(ifmgd->probe_timeout))
+                        run_again(ifmgd, ifmgd->probe_timeout);
+                else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+                        wiphy_debug(local->hw.wiphy,
+                                    "%s: Failed to send nullfunc to AP %pM"
+                                    " after %dms, disconnecting.\n",
+                                    sdata->name,
+                                    bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ);
+#endif
+                        ieee80211_sta_connection_lost(sdata, bssid);
+                } else if (ifmgd->probe_send_count < max_tries) {
 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
                         wiphy_debug(local->hw.wiphy,
                                     "%s: No probe response from AP %pM"
@@ -1877,27 +2012,13 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
                          * We actually lost the connection ... or did we?
                          * Let's make sure!
                          */
-                        ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
-                                          IEEE80211_STA_BEACON_POLL);
                         wiphy_debug(local->hw.wiphy,
                                     "%s: No probe response from AP %pM"
                                     " after %dms, disconnecting.\n",
                                     sdata->name,
                                     bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ);
-                        ieee80211_set_disassoc(sdata, true, true);
-                        mutex_unlock(&ifmgd->mtx);
-                        mutex_lock(&local->mtx);
-                        ieee80211_recalc_idle(local);
-                        mutex_unlock(&local->mtx);
-                        /*
-                         * must be outside lock due to cfg80211,
-                         * but that's not a problem.
-                         */
-                        ieee80211_send_deauth_disassoc(sdata, bssid,
-                                        IEEE80211_STYPE_DEAUTH,
-                                        WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
-                                        NULL, true);
-                        mutex_lock(&ifmgd->mtx);
+
+                        ieee80211_sta_connection_lost(sdata, bssid);
                 }
         }
 
@@ -1988,6 +2109,8 @@ void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
                 add_timer(&ifmgd->timer);
         if (test_and_clear_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running))
                 add_timer(&ifmgd->chswitch_timer);
+        ieee80211_sta_reset_beacon_monitor(sdata);
+        ieee80211_restart_sta_timer(sdata);
 }
 #endif
 
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 33f76993da08..3d5a2cb835c4 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -211,7 +211,8 @@ static bool rc_no_data_or_no_ack(struct ieee80211_tx_rate_control *txrc)
         return (info->flags & IEEE80211_TX_CTL_NO_ACK) || !ieee80211_is_data(fc);
 }
 
-static void rc_send_low_broadcast(s8 *idx, u32 basic_rates, u8 max_rate_idx)
+static void rc_send_low_broadcast(s8 *idx, u32 basic_rates,
+                                  struct ieee80211_supported_band *sband)
 {
         u8 i;
 
@@ -222,7 +223,7 @@ static void rc_send_low_broadcast(s8 *idx, u32 basic_rates, u8 max_rate_idx)
         if (basic_rates & (1 << *idx))
                 return; /* selected rate is a basic rate */
 
-        for (i = *idx + 1; i <= max_rate_idx; i++) {
+        for (i = *idx + 1; i <= sband->n_bitrates; i++) {
                 if (basic_rates & (1 << i)) {
                         *idx = i;
                         return;
@@ -237,16 +238,25 @@ bool rate_control_send_low(struct ieee80211_sta *sta,
                            struct ieee80211_tx_rate_control *txrc)
 {
         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(txrc->skb);
+        struct ieee80211_supported_band *sband = txrc->sband;
+        int mcast_rate;
 
         if (!sta || !priv_sta || rc_no_data_or_no_ack(txrc)) {
                 info->control.rates[0].idx = rate_lowest_index(txrc->sband, sta);
                 info->control.rates[0].count =
                         (info->flags & IEEE80211_TX_CTL_NO_ACK) ?
                         1 : txrc->hw->max_rate_tries;
-                if (!sta && txrc->ap)
+                if (!sta && txrc->bss) {
+                        mcast_rate = txrc->bss_conf->mcast_rate[sband->band];
+                        if (mcast_rate > 0) {
+                                info->control.rates[0].idx = mcast_rate - 1;
+                                return true;
+                        }
+
                         rc_send_low_broadcast(&info->control.rates[0].idx,
                                               txrc->bss_conf->basic_rates,
-                                              txrc->sband->n_bitrates);
+                                              sband);
+                }
                 return true;
         }
         return false;
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index 2a18d6602d4a..4ad7a362fcc1 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -371,6 +371,9 @@ minstrel_aggr_check(struct minstrel_priv *mp, struct ieee80211_sta *pubsta, stru
         if (likely(sta->ampdu_mlme.tid_tx[tid]))
                 return;
 
+        if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO)
+                return;
+
         ieee80211_start_tx_ba_session(pubsta, tid);
 }
 
@@ -407,8 +410,8 @@ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
         mi->ampdu_len += info->status.ampdu_len;
 
         if (!mi->sample_wait && !mi->sample_tries && mi->sample_count > 0) {
-                mi->sample_wait = 4 + 2 * MINSTREL_TRUNC(mi->avg_ampdu_len);
-                mi->sample_tries = 3;
+                mi->sample_wait = 16 + 2 * MINSTREL_TRUNC(mi->avg_ampdu_len);
+                mi->sample_tries = 2;
                 mi->sample_count--;
         }
 
@@ -506,7 +509,9 @@ minstrel_ht_set_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
         if (!mr->retry_updated)
                 minstrel_calc_retransmit(mp, mi, index);
 
-        if (mr->probability < MINSTREL_FRAC(20, 100))
+        if (sample)
+                rate->count = 1;
+        else if (mr->probability < MINSTREL_FRAC(20, 100))
                 rate->count = 2;
         else if (rtscts)
                 rate->count = mr->retry_count_rtscts;
@@ -562,7 +567,7 @@ minstrel_get_sample_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
          */
         if (minstrel_get_duration(sample_idx) >
             minstrel_get_duration(mi->max_tp_rate)) {
-                if (mr->sample_skipped < 10)
+                if (mr->sample_skipped < 20)
                         goto next;
 
                 if (mi->sample_slow++ > 2)
@@ -586,6 +591,7 @@ minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
         struct minstrel_ht_sta *mi = &msp->ht;
         struct minstrel_priv *mp = priv;
         int sample_idx;
+        bool sample = false;
 
         if (rate_control_send_low(sta, priv_sta, txrc))
                 return;
@@ -596,10 +602,11 @@ minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
         info->flags |= mi->tx_flags;
         sample_idx = minstrel_get_sample_rate(mp, mi);
         if (sample_idx >= 0) {
+                sample = true;
                 minstrel_ht_set_rate(mp, mi, &ar[0], sample_idx,
                         txrc, true, false);
                 minstrel_ht_set_rate(mp, mi, &ar[1], mi->max_tp_rate,
-                        txrc, false, true);
+                        txrc, false, false);
                 info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
         } else {
                 minstrel_ht_set_rate(mp, mi, &ar[0], mi->max_tp_rate,
@@ -607,7 +614,7 @@ minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
                 minstrel_ht_set_rate(mp, mi, &ar[1], mi->max_tp_rate2,
                         txrc, false, true);
         }
-        minstrel_ht_set_rate(mp, mi, &ar[2], mi->max_prob_rate, txrc, false, true);
+        minstrel_ht_set_rate(mp, mi, &ar[2], mi->max_prob_rate, txrc, false, !sample);
 
         ar[3].count = 0;
         ar[3].idx = -1;
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 54fb4a0e76f0..2fe8f5f86499 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -538,6 +538,8 @@ static void ieee80211_release_reorder_frame(struct ieee80211_hw *hw,
 {
         struct sk_buff *skb = tid_agg_rx->reorder_buf[index];
 
+        lockdep_assert_held(&tid_agg_rx->reorder_lock);
+
         if (!skb)
                 goto no_frame;
 
@@ -557,6 +559,8 @@ static void ieee80211_release_reorder_frames(struct ieee80211_hw *hw,
 {
         int index;
 
+        lockdep_assert_held(&tid_agg_rx->reorder_lock);
+
         while (seq_less(tid_agg_rx->head_seq_num, head_seq_num)) {
                 index = seq_sub(tid_agg_rx->head_seq_num, tid_agg_rx->ssn) %
                                                         tid_agg_rx->buf_size;
@@ -581,6 +585,8 @@ static void ieee80211_sta_reorder_release(struct ieee80211_hw *hw,
 {
         int index, j;
 
+        lockdep_assert_held(&tid_agg_rx->reorder_lock);
+
         /* release the buffer until next missing frame */
         index = seq_sub(tid_agg_rx->head_seq_num, tid_agg_rx->ssn) %
                                                 tid_agg_rx->buf_size;
@@ -683,10 +689,11 @@ static bool ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw,
         int index;
         bool ret = true;
 
+        spin_lock(&tid_agg_rx->reorder_lock);
+
         buf_size = tid_agg_rx->buf_size;
         head_seq_num = tid_agg_rx->head_seq_num;
 
-        spin_lock(&tid_agg_rx->reorder_lock);
         /* frame with out of date sequence number */
         if (seq_less(mpdu_seq_num, head_seq_num)) {
                 dev_kfree_skb(skb);
@@ -1102,8 +1109,6 @@ static void ap_sta_ps_end(struct sta_info *sta)
 
         atomic_dec(&sdata->bss->num_sta_ps);
 
-        clear_sta_flags(sta, WLAN_STA_PS_STA);
-
 #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
         printk(KERN_DEBUG "%s: STA %pM aid %d exits power save mode\n",
                sdata->name, sta->sta.addr, sta->sta.aid);
@@ -1158,6 +1163,7 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
         sta->rx_fragments++;
         sta->rx_bytes += rx->skb->len;
         sta->last_signal = status->signal;
+        ewma_add(&sta->avg_signal, -status->signal);
 
         /*
          * Change STA power saving mode only at the end of a frame
@@ -1872,9 +1878,8 @@ ieee80211_rx_h_data(struct ieee80211_rx_data *rx)
         dev->stats.rx_packets++;
         dev->stats.rx_bytes += rx->skb->len;
 
-        if (ieee80211_is_data(hdr->frame_control) &&
-            !is_multicast_ether_addr(hdr->addr1) &&
-            local->hw.conf.dynamic_ps_timeout > 0 && local->ps_sdata) {
+        if (local->ps_sdata && local->hw.conf.dynamic_ps_timeout > 0 &&
+            !is_multicast_ether_addr(((struct ethhdr *)rx->skb->data)->h_dest)) {
                         mod_timer(&local->dynamic_ps_timer, jiffies +
                          msecs_to_jiffies(local->hw.conf.dynamic_ps_timeout));
         }
@@ -1923,9 +1928,12 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx, struct sk_buff_head *frames)
                         mod_timer(&tid_agg_rx->session_timer,
                                   TU_TO_EXP_TIME(tid_agg_rx->timeout));
 
+                spin_lock(&tid_agg_rx->reorder_lock);
                 /* release stored frames up to start of BAR */
                 ieee80211_release_reorder_frames(hw, tid_agg_rx, start_seq_num,
                                                  frames);
+                spin_unlock(&tid_agg_rx->reorder_lock);
+
                 kfree_skb(skb);
                 return RX_QUEUED;
         }
@@ -2521,9 +2529,8 @@ static void ieee80211_invoke_rx_handlers(struct ieee80211_rx_data *rx)
 }
 
 /*
- * This function makes calls into the RX path. Therefore the
- * caller must hold the sta_info->lock and everything has to
- * be under rcu_read_lock protection as well.
+ * This function makes calls into the RX path, therefore
+ * it has to be invoked under RCU read lock.
  */
 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid)
 {
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 6d8f897d8763..c426504ed1cf 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -199,8 +199,11 @@ static void sta_unblock(struct work_struct *wk)
 
         if (!test_sta_flags(sta, WLAN_STA_PS_STA))
                 ieee80211_sta_ps_deliver_wakeup(sta);
-        else if (test_and_clear_sta_flags(sta, WLAN_STA_PSPOLL))
+        else if (test_and_clear_sta_flags(sta, WLAN_STA_PSPOLL)) {
+                clear_sta_flags(sta, WLAN_STA_PS_DRIVER);
                 ieee80211_sta_ps_deliver_poll_response(sta);
+        } else
+                clear_sta_flags(sta, WLAN_STA_PS_DRIVER);
 }
 
 static int sta_prepare_rate_control(struct ieee80211_local *local,
@@ -241,6 +244,8 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
         sta->local = local;
         sta->sdata = sdata;
 
+        ewma_init(&sta->avg_signal, 1024, 8);
+
         if (sta_prepare_rate_control(local, sta, gfp)) {
                 kfree(sta);
                 return NULL;
@@ -880,6 +885,13 @@ struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif,
 }
 EXPORT_SYMBOL(ieee80211_find_sta);
 
+static void clear_sta_ps_flags(void *_sta)
+{
+        struct sta_info *sta = _sta;
+
+        clear_sta_flags(sta, WLAN_STA_PS_DRIVER | WLAN_STA_PS_STA);
+}
+
 /* powersave support code */
 void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
 {
@@ -894,7 +906,8 @@ void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
 
         /* Send all buffered frames to the station */
         sent = ieee80211_add_pending_skbs(local, &sta->tx_filtered);
-        buffered = ieee80211_add_pending_skbs(local, &sta->ps_tx_buf);
+        buffered = ieee80211_add_pending_skbs_fn(local, &sta->ps_tx_buf,
+                                                 clear_sta_ps_flags, sta);
         sent += buffered;
         local->total_ps_buffered -= buffered;
 
@@ -973,7 +986,7 @@ void ieee80211_sta_block_awake(struct ieee80211_hw *hw,
 
         if (block)
                 set_sta_flags(sta, WLAN_STA_PS_DRIVER);
-        else
+        else if (test_sta_flags(sta, WLAN_STA_PS_DRIVER))
                 ieee80211_queue_work(hw, &sta->drv_unblock_wk);
 }
 EXPORT_SYMBOL(ieee80211_sta_block_awake);
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 9265acadef32..fdca52cf88de 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -13,6 +13,7 @@
 #include <linux/types.h>
 #include <linux/if_ether.h>
 #include <linux/workqueue.h>
+#include <linux/average.h>
 #include "key.h"
 
 /**
@@ -81,13 +82,14 @@ enum ieee80211_sta_info_flags {
  * @stop_initiator: initiator of a session stop
  * @tx_stop: TX DelBA frame when stopping
  *
- * This structure is protected by RCU and the per-station
- * spinlock. Assignments to the array holding it must hold
- * the spinlock, only the TX path can access it under RCU
- * lock-free if, and only if, the state has  the flag
- * %HT_AGG_STATE_OPERATIONAL set. Otherwise, the TX path
- * must also acquire the spinlock and re-check the state,
- * see comments in the tx code touching it.
+ * This structure's lifetime is managed by RCU, assignments to
+ * the array holding it must hold the aggregation mutex.
+ *
+ * The TX path can access it under RCU lock-free if, and
+ * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL
+ * set. Otherwise, the TX path must also acquire the spinlock
+ * and re-check the state, see comments in the tx code
+ * touching it.
  */
 struct tid_ampdu_tx {
         struct rcu_head rcu_head;
@@ -115,15 +117,13 @@ struct tid_ampdu_tx {
  * @rcu_head: RCU head used for freeing this struct
  * @reorder_lock: serializes access to reorder buffer, see below.
  *
- * This structure is protected by RCU and the per-station
- * spinlock. Assignments to the array holding it must hold
- * the spinlock.
+ * This structure's lifetime is managed by RCU, assignments to
+ * the array holding it must hold the aggregation mutex.
  *
- * The @reorder_lock is used to protect the variables and
- * arrays such as @reorder_buf, @reorder_time, @head_seq_num,
- * @stored_mpdu_num and @reorder_time from being corrupted by
- * concurrent access of the RX path and the expired frame
- * release timer.
+ * The @reorder_lock is used to protect the members of this
+ * struct, except for @timeout, @buf_size and @dialog_token,
+ * which are constant across the lifetime of the struct (the
+ * dialog token being used only for debugging).
  */
 struct tid_ampdu_rx {
         struct rcu_head rcu_head;
@@ -224,6 +224,7 @@ enum plink_state {
  * @rx_fragments: number of received MPDUs
  * @rx_dropped: number of dropped MPDUs from this STA
  * @last_signal: signal of last received frame from this STA
+ * @avg_signal: moving average of signal of received frames from this STA
  * @last_seq_ctrl: last received seq/frag number from this STA (per RX queue)
  * @tx_filtered_count: number of frames the hardware filtered for this STA
  * @tx_retry_failed: number of frames that failed retry
@@ -248,6 +249,7 @@ enum plink_state {
  * @sta: station information we share with the driver
  * @dead: set to true when sta is unlinked
  * @uploaded: set to true when sta is uploaded to the driver
+ * @lost_packets: number of consecutive lost packets
  */
 struct sta_info {
         /* General information, mostly static */
@@ -291,6 +293,7 @@ struct sta_info {
         unsigned long rx_fragments;
         unsigned long rx_dropped;
         int last_signal;
+        struct ewma avg_signal;
         __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
 
         /* Updated from TX status path only, no locking requirements */
@@ -335,6 +338,8 @@ struct sta_info {
         } debugfs;
 #endif
 
+        unsigned int lost_packets;
+
         /* keep last! */
         struct ieee80211_sta sta;
 };
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 3153c19893b8..38a797217a91 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -157,6 +157,15 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
         }
 }
 
+/*
+ * Use a static threshold for now, best value to be determined
+ * by testing ...
+ * Should it depend on:
+ *  - on # of retransmissions
+ *  - current throughput (higher value for higher tpt)?
+ */
+#define STA_LOST_PKT_THRESHOLD  50
+
 void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
 {
         struct sk_buff *skb2;
@@ -173,6 +182,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
         int retry_count = -1, i;
         int rates_idx = -1;
         bool send_to_cooked;
+        bool acked;
 
         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
                 /* the HW cannot have attempted that rate */
@@ -198,8 +208,8 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
                 if (memcmp(hdr->addr2, sta->sdata->vif.addr, ETH_ALEN))
                         continue;
 
-                if (!(info->flags & IEEE80211_TX_STAT_ACK) &&
-                    test_sta_flags(sta, WLAN_STA_PS_STA)) {
+                acked = !!(info->flags & IEEE80211_TX_STAT_ACK);
+                if (!acked && test_sta_flags(sta, WLAN_STA_PS_STA)) {
                         /*
                          * The STA is in power save mode, so assume
                          * that this TX packet failed because of that.
@@ -231,7 +241,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
                         rcu_read_unlock();
                         return;
                 } else {
-                        if (!(info->flags & IEEE80211_TX_STAT_ACK))
+                        if (!acked)
                                 sta->tx_retry_failed++;
                         sta->tx_retry_count += retry_count;
                 }
@@ -240,9 +250,25 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
                 if (ieee80211_vif_is_mesh(&sta->sdata->vif))
                         ieee80211s_update_metric(local, sta, skb);
 
-                if (!(info->flags & IEEE80211_TX_CTL_INJECTED) &&
-                    (info->flags & IEEE80211_TX_STAT_ACK))
+                if (!(info->flags & IEEE80211_TX_CTL_INJECTED) && acked)
                         ieee80211_frame_acked(sta, skb);
+
+                if ((sta->sdata->vif.type == NL80211_IFTYPE_STATION) &&
+                    (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS))
+                        ieee80211_sta_tx_notify(sta->sdata, (void *) skb->data, acked);
+
+                if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
+                        if (info->flags & IEEE80211_TX_STAT_ACK) {
+                                if (sta->lost_packets)
+                                        sta->lost_packets = 0;
+                        } else if (++sta->lost_packets >= STA_LOST_PKT_THRESHOLD) {
+                                cfg80211_cqm_pktloss_notify(sta->sdata->dev,
+                                                            sta->sta.addr,
+                                                            sta->lost_packets,
+                                                            GFP_ATOMIC);
+                                sta->lost_packets = 0;
+                        }
+                }
         }
 
         rcu_read_unlock();
@@ -295,10 +321,23 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
                                         msecs_to_jiffies(10));
         }
 
-        if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX)
+        if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX) {
+                struct ieee80211_work *wk;
+
+                rcu_read_lock();
+                list_for_each_entry_rcu(wk, &local->work_list, list) {
+                        if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
+                                continue;
+                        if (wk->offchan_tx.frame != skb)
+                                continue;
+                        wk->offchan_tx.frame = NULL;
+                        break;
+                }
+                rcu_read_unlock();
                 cfg80211_mgmt_tx_status(
                         skb->dev, (unsigned long) skb, skb->data, skb->len,
                         !!(info->flags & IEEE80211_TX_STAT_ACK), GFP_ATOMIC);
+        }
 
         /* this was a transmitted frame, but now we want to reuse it */
         skb_orphan(skb);
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 7a637b80a62e..0ee56bb0ea7e 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -622,7 +622,8 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
                 txrc.max_rate_idx = -1;
         else
                 txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1;
-        txrc.ap = tx->sdata->vif.type == NL80211_IFTYPE_AP;
+        txrc.bss = (tx->sdata->vif.type == NL80211_IFTYPE_AP ||
+                    tx->sdata->vif.type == NL80211_IFTYPE_ADHOC);
 
         /* set up RTS protection if desired */
         if (len > tx->local->hw.wiphy->rts_threshold) {
@@ -665,10 +666,11 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
         if (unlikely(info->control.rates[0].idx < 0))
                 return TX_DROP;
 
-        if (txrc.reported_rate.idx < 0)
+        if (txrc.reported_rate.idx < 0) {
                 txrc.reported_rate = info->control.rates[0];
-
-        if (tx->sta)
+                if (tx->sta && ieee80211_is_data(hdr->frame_control))
+                        tx->sta->last_tx_rate = txrc.reported_rate;
+        } else if (tx->sta)
                 tx->sta->last_tx_rate = txrc.reported_rate;
 
         if (unlikely(!info->control.rates[0].count))
@@ -1033,6 +1035,7 @@ static bool __ieee80211_parse_tx_radiotap(struct ieee80211_tx_data *tx,
         struct ieee80211_radiotap_header *rthdr =
                 (struct ieee80211_radiotap_header *) skb->data;
         struct ieee80211_supported_band *sband;
+        bool hw_frag;
         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
         int ret = ieee80211_radiotap_iterator_init(&iterator, rthdr, skb->len,
                                                    NULL);
@@ -1042,6 +1045,9 @@ static bool __ieee80211_parse_tx_radiotap(struct ieee80211_tx_data *tx,
         info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
         tx->flags &= ~IEEE80211_TX_FRAGMENTED;
 
+        /* packet is fragmented in HW if we have a non-NULL driver callback */
+        hw_frag = (tx->local->ops->set_frag_threshold != NULL);
+
         /*
          * for every radiotap entry that is present
          * (ieee80211_radiotap_iterator_next returns -ENOENT when no more
@@ -1078,7 +1084,8 @@ static bool __ieee80211_parse_tx_radiotap(struct ieee80211_tx_data *tx,
                         }
                         if (*iterator.this_arg & IEEE80211_RADIOTAP_F_WEP)
                                 info->flags &= ~IEEE80211_TX_INTFL_DONT_ENCRYPT;
-                        if (*iterator.this_arg & IEEE80211_RADIOTAP_F_FRAG)
+                        if ((*iterator.this_arg & IEEE80211_RADIOTAP_F_FRAG) &&
+                                                                !hw_frag)
                                 tx->flags |= IEEE80211_TX_FRAGMENTED;
                         break;
 
@@ -1181,8 +1188,10 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
         /*
          * Set this flag (used below to indicate "automatic fragmentation"),
          * it will be cleared/left by radiotap as desired.
+         * Only valid when fragmentation is done by the stack.
          */
-        tx->flags |= IEEE80211_TX_FRAGMENTED;
+        if (!local->ops->set_frag_threshold)
+                tx->flags |= IEEE80211_TX_FRAGMENTED;
 
         /* process and remove the injection radiotap header */
         if (unlikely(info->flags & IEEE80211_TX_INTFL_HAS_RADIOTAP)) {
@@ -2321,7 +2330,7 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
                 txrc.max_rate_idx = -1;
         else
                 txrc.max_rate_idx = fls(txrc.rate_idx_mask) - 1;
-        txrc.ap = true;
+        txrc.bss = true;
         rate_control_get_rate(sdata, NULL, &txrc);
 
         info->control.vif = vif;
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 0b6fc92bc0d7..e497476174ce 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -368,8 +368,9 @@ void ieee80211_add_pending_skb(struct ieee80211_local *local,
         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 }
 
-int ieee80211_add_pending_skbs(struct ieee80211_local *local,
-                               struct sk_buff_head *skbs)
+int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
+                                  struct sk_buff_head *skbs,
+                                  void (*fn)(void *data), void *data)
 {
         struct ieee80211_hw *hw = &local->hw;
         struct sk_buff *skb;
@@ -394,6 +395,9 @@ int ieee80211_add_pending_skbs(struct ieee80211_local *local,
                 __skb_queue_tail(&local->pending[queue], skb);
         }
 
+        if (fn)
+                fn(data);
+
         for (i = 0; i < hw->queues; i++)
                 __ieee80211_wake_queue(hw, i,
                         IEEE80211_QUEUE_STOP_REASON_SKB_ADD);
@@ -402,6 +406,12 @@ int ieee80211_add_pending_skbs(struct ieee80211_local *local,
         return ret;
 }
 
+int ieee80211_add_pending_skbs(struct ieee80211_local *local,
+                               struct sk_buff_head *skbs)
+{
+        return ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
+}
+
 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
                                     enum queue_stop_reason reason)
 {
@@ -1011,9 +1021,10 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
         return pos - buffer;
 }
 
-void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
-                              const u8 *ssid, size_t ssid_len,
-                              const u8 *ie, size_t ie_len)
+struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
+                                          u8 *dst,
+                                          const u8 *ssid, size_t ssid_len,
+                                          const u8 *ie, size_t ie_len)
 {
         struct ieee80211_local *local = sdata->local;
         struct sk_buff *skb;
@@ -1027,7 +1038,7 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
         if (!buf) {
                 printk(KERN_DEBUG "%s: failed to allocate temporary IE "
                        "buffer\n", sdata->name);
-                return;
+                return NULL;
         }
 
         chan = ieee80211_frequency_to_channel(
@@ -1050,8 +1061,20 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
         }
 
         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
-        ieee80211_tx_skb(sdata, skb);
         kfree(buf);
+
+        return skb;
+}
+
+void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
+                              const u8 *ssid, size_t ssid_len,
+                              const u8 *ie, size_t ie_len)
+{
+        struct sk_buff *skb;
+
+        skb = ieee80211_build_probe_req(sdata, dst, ssid, ssid_len, ie, ie_len);
+        if (skb)
+                ieee80211_tx_skb(sdata, skb);
 }
 
 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
@@ -1152,6 +1175,9 @@ int ieee80211_reconfig(struct ieee80211_local *local)
         }
         mutex_unlock(&local->sta_mtx);
 
+        /* setup fragmentation threshold */
+        drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
+
         /* setup RTS threshold */
         drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
 
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 34e6d02da779..58e75bbc1f91 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -21,7 +21,16 @@
 /* Default mapping in classifier to work with default
  * queue setup.
  */
-const int ieee802_1d_to_ac[8] = { 2, 3, 3, 2, 1, 1, 0, 0 };
+const int ieee802_1d_to_ac[8] = {
+        IEEE80211_AC_BE,
+        IEEE80211_AC_BK,
+        IEEE80211_AC_BK,
+        IEEE80211_AC_BE,
+        IEEE80211_AC_VI,
+        IEEE80211_AC_VI,
+        IEEE80211_AC_VO,
+        IEEE80211_AC_VO
+};
 
 static int wme_downgrade_ac(struct sk_buff *skb)
 {
diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index 146097cb43a7..36305e0d06ef 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -458,8 +458,9 @@ ieee80211_direct_probe(struct ieee80211_work *wk)
                 return WORK_ACT_TIMEOUT;
         }
 
-        printk(KERN_DEBUG "%s: direct probe to %pM (try %d)\n",
-                        sdata->name, wk->filter_ta, wk->probe_auth.tries);
+        printk(KERN_DEBUG "%s: direct probe to %pM (try %d/%i)\n",
+               sdata->name, wk->filter_ta, wk->probe_auth.tries,
+               IEEE80211_AUTH_MAX_TRIES);
 
         /*
          * Direct probe is sent to broadcast address as some APs
@@ -561,6 +562,25 @@ ieee80211_remain_on_channel_timeout(struct ieee80211_work *wk)
 }
 
 static enum work_action __must_check
+ieee80211_offchannel_tx(struct ieee80211_work *wk)
+{
+        if (!wk->started) {
+                wk->timeout = jiffies + msecs_to_jiffies(wk->offchan_tx.wait);
+
+                /*
+                 * After this, offchan_tx.frame remains but now is no
+                 * longer a valid pointer -- we still need it as the
+                 * cookie for canceling this work.
+                 */
+                ieee80211_tx_skb(wk->sdata, wk->offchan_tx.frame);
+
+                return WORK_ACT_NONE;
+        }
+
+        return WORK_ACT_TIMEOUT;
+}
+
+static enum work_action __must_check
 ieee80211_assoc_beacon_wait(struct ieee80211_work *wk)
 {
         if (wk->started)
@@ -955,6 +975,9 @@ static void ieee80211_work_work(struct work_struct *work)
                 case IEEE80211_WORK_REMAIN_ON_CHANNEL:
                         rma = ieee80211_remain_on_channel_timeout(wk);
                         break;
+                case IEEE80211_WORK_OFFCHANNEL_TX:
+                        rma = ieee80211_offchannel_tx(wk);
+                        break;
                 case IEEE80211_WORK_ASSOC_BEACON_WAIT:
                         rma = ieee80211_assoc_beacon_wait(wk);
                         break;
diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index 85dabb86be6f..32fcbe290c04 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -173,9 +173,11 @@ next_hook:
                              outdev, &elem, okfn, hook_thresh);
         if (verdict == NF_ACCEPT || verdict == NF_STOP) {
                 ret = 1;
-        } else if (verdict == NF_DROP) {
+        } else if ((verdict & NF_VERDICT_MASK) == NF_DROP) {
                 kfree_skb(skb);
-                ret = -EPERM;
+                ret = -(verdict >> NF_VERDICT_BITS);
+                if (ret == 0)
+                        ret = -EPERM;
         } else if ((verdict & NF_VERDICT_MASK) == NF_QUEUE) {
                 if (!nf_queue(skb, elem, pf, hook, indev, outdev, okfn,
                               verdict >> NF_VERDICT_BITS))
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 5f5daa30b0af..c6f293639220 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -110,10 +110,8 @@ static int __ip_vs_addr_is_local_v6(const struct in6_addr *addr)
         struct rt6_info *rt;
         struct flowi fl = {
                 .oif = 0,
-                .nl_u = {
-                        .ip6_u = {
-                                .daddr = *addr,
-                                .saddr = { .s6_addr32 = {0, 0, 0, 0} }, } },
+                .fl6_dst = *addr,
+                .fl6_src = { .s6_addr32 = {0, 0, 0, 0} },
         };
 
         rt = (struct rt6_info *)ip6_route_output(&init_net, NULL, &fl);
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index de04ea39cde8..5325a3fbe4ac 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -96,12 +96,8 @@ __ip_vs_get_out_rt(struct sk_buff *skb, struct ip_vs_dest *dest,
                 if (!(rt = (struct rtable *)
                       __ip_vs_dst_check(dest, rtos))) {
                         struct flowi fl = {
-                                .oif = 0,
-                                .nl_u = {
-                                        .ip4_u = {
-                                                .daddr = dest->addr.ip,
-                                                .saddr = 0,
-                                                .tos = rtos, } },
+                                .fl4_dst = dest->addr.ip,
+                                .fl4_tos = rtos,
                         };
 
                         if (ip_route_output_key(net, &rt, &fl)) {
@@ -118,12 +114,8 @@ __ip_vs_get_out_rt(struct sk_buff *skb, struct ip_vs_dest *dest,
                 spin_unlock(&dest->dst_lock);
         } else {
                 struct flowi fl = {
-                        .oif = 0,
-                        .nl_u = {
-                                .ip4_u = {
-                                        .daddr = daddr,
-                                        .saddr = 0,
-                                        .tos = rtos, } },
+                        .fl4_dst = daddr,
+                        .fl4_tos = rtos,
                 };
 
                 if (ip_route_output_key(net, &rt, &fl)) {
@@ -169,7 +161,7 @@ __ip_vs_reroute_locally(struct sk_buff *skb)
         struct net *net = dev_net(dev);
         struct iphdr *iph = ip_hdr(skb);
 
-        if (rt->fl.iif) {
+        if (rt_is_input_route(rt)) {
                 unsigned long orefdst = skb->_skb_refdst;
 
                 if (ip_route_input(skb, iph->daddr, iph->saddr,
@@ -178,14 +170,9 @@ __ip_vs_reroute_locally(struct sk_buff *skb)
                 refdst_drop(orefdst);
         } else {
                 struct flowi fl = {
-                        .oif = 0,
-                        .nl_u = {
-                                .ip4_u = {
-                                        .daddr = iph->daddr,
-                                        .saddr = iph->saddr,
-                                        .tos = RT_TOS(iph->tos),
-                                }
-                        },
+                        .fl4_dst = iph->daddr,
+                        .fl4_src = iph->saddr,
+                        .fl4_tos = RT_TOS(iph->tos),
                         .mark = skb->mark,
                 };
                 struct rtable *rt;
@@ -216,12 +203,7 @@ __ip_vs_route_output_v6(struct net *net, struct in6_addr *daddr,
 {
         struct dst_entry *dst;
         struct flowi fl = {
-                .oif = 0,
-                .nl_u = {
-                        .ip6_u = {
-                                .daddr = *daddr,
-                        },
-                },
+                .fl6_dst = *daddr,
         };
 
         dst = ip6_route_output(net, NULL, &fl);
@@ -552,7 +534,8 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
 #endif
 
         /* From world but DNAT to loopback address? */
-        if (local && ipv4_is_loopback(rt->rt_dst) && skb_rtable(skb)->fl.iif) {
+        if (local && ipv4_is_loopback(rt->rt_dst) &&
+            rt_is_input_route(skb_rtable(skb))) {
                 IP_VS_DBG_RL_PKT(1, AF_INET, pp, skb, 0, "ip_vs_nat_xmit(): "
                                  "stopping DNAT to loopback address");
                 goto tx_error_put;
@@ -1165,7 +1148,8 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
 #endif
 
         /* From world but DNAT to loopback address? */
-        if (local && ipv4_is_loopback(rt->rt_dst) && skb_rtable(skb)->fl.iif) {
+        if (local && ipv4_is_loopback(rt->rt_dst) &&
+            rt_is_input_route(skb_rtable(skb))) {
                 IP_VS_DBG(1, "%s(): "
                           "stopping DNAT to loopback %pI4\n",
                           __func__, &cp->daddr.ip);
diff --git a/net/netfilter/xt_TEE.c b/net/netfilter/xt_TEE.c
index 22a2d421e7eb..5128a6c4cb2c 100644
--- a/net/netfilter/xt_TEE.c
+++ b/net/netfilter/xt_TEE.c
@@ -70,9 +70,9 @@ tee_tg_route4(struct sk_buff *skb, const struct xt_tee_tginfo *info)
                         return false;
                 fl.oif = info->priv->oif;
         }
-        fl.nl_u.ip4_u.daddr = info->gw.ip;
-        fl.nl_u.ip4_u.tos   = RT_TOS(iph->tos);
-        fl.nl_u.ip4_u.scope = RT_SCOPE_UNIVERSE;
+        fl.fl4_dst = info->gw.ip;
+        fl.fl4_tos = RT_TOS(iph->tos);
+        fl.fl4_scope = RT_SCOPE_UNIVERSE;
         if (ip_route_output_key(net, &rt, &fl) != 0)
                 return false;
 
@@ -150,9 +150,9 @@ tee_tg_route6(struct sk_buff *skb, const struct xt_tee_tginfo *info)
                         return false;
                 fl.oif = info->priv->oif;
         }
-        fl.nl_u.ip6_u.daddr = info->gw.in6;
-        fl.nl_u.ip6_u.flowlabel = ((iph->flow_lbl[0] & 0xF) << 16) |
-                                  (iph->flow_lbl[1] << 8) | iph->flow_lbl[2];
+        fl.fl6_dst = info->gw.in6;
+        fl.fl6_flowlabel = ((iph->flow_lbl[0] & 0xF) << 16) |
+                           (iph->flow_lbl[1] << 8) | iph->flow_lbl[2];
         dst = ip6_route_output(net, NULL, &fl);
         if (dst == NULL)
                 return false;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 8298e676f5a0..91cb1d71f018 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -61,6 +61,7 @@
 #include <linux/kernel.h>
 #include <linux/kmod.h>
 #include <linux/slab.h>
+#include <linux/vmalloc.h>
 #include <net/net_namespace.h>
 #include <net/ip.h>
 #include <net/protocol.h>
@@ -163,8 +164,13 @@ struct packet_mreq_max {
 static int packet_set_ring(struct sock *sk, struct tpacket_req *req,
                 int closing, int tx_ring);
 
+#define PGV_FROM_VMALLOC 1
+struct pgv {
+        char *buffer;
+};
+
 struct packet_ring_buffer {
-        char                    **pg_vec;
+        struct pgv              *pg_vec;
         unsigned int            head;
         unsigned int            frames_per_block;
         unsigned int            frame_size;
@@ -217,6 +223,13 @@ struct packet_skb_cb {
 
 #define PACKET_SKB_CB(__skb)    ((struct packet_skb_cb *)((__skb)->cb))
 
+static inline __pure struct page *pgv_to_page(void *addr)
+{
+        if (is_vmalloc_addr(addr))
+                return vmalloc_to_page(addr);
+        return virt_to_page(addr);
+}
+
 static void __packet_set_status(struct packet_sock *po, void *frame, int status)
 {
         union {
@@ -229,11 +242,11 @@ static void __packet_set_status(struct packet_sock *po, void *frame, int status)
         switch (po->tp_version) {
         case TPACKET_V1:
                 h.h1->tp_status = status;
-                flush_dcache_page(virt_to_page(&h.h1->tp_status));
+                flush_dcache_page(pgv_to_page(&h.h1->tp_status));
                 break;
         case TPACKET_V2:
                 h.h2->tp_status = status;
-                flush_dcache_page(virt_to_page(&h.h2->tp_status));
+                flush_dcache_page(pgv_to_page(&h.h2->tp_status));
                 break;
         default:
                 pr_err("TPACKET version not supported\n");
@@ -256,10 +269,10 @@ static int __packet_get_status(struct packet_sock *po, void *frame)
         h.raw = frame;
         switch (po->tp_version) {
         case TPACKET_V1:
-                flush_dcache_page(virt_to_page(&h.h1->tp_status));
+                flush_dcache_page(pgv_to_page(&h.h1->tp_status));
                 return h.h1->tp_status;
         case TPACKET_V2:
-                flush_dcache_page(virt_to_page(&h.h2->tp_status));
+                flush_dcache_page(pgv_to_page(&h.h2->tp_status));
                 return h.h2->tp_status;
         default:
                 pr_err("TPACKET version not supported\n");
@@ -283,7 +296,8 @@ static void *packet_lookup_frame(struct packet_sock *po,
         pg_vec_pos = position / rb->frames_per_block;
         frame_offset = position % rb->frames_per_block;
 
-        h.raw = rb->pg_vec[pg_vec_pos] + (frame_offset * rb->frame_size);
+        h.raw = rb->pg_vec[pg_vec_pos].buffer +
+                (frame_offset * rb->frame_size);
 
         if (status != __packet_get_status(po, h.raw))
                 return NULL;
@@ -503,7 +517,8 @@ out_free:
         return err;
 }
 
-static inline unsigned int run_filter(struct sk_buff *skb, struct sock *sk,
+static inline unsigned int run_filter(const struct sk_buff *skb,
+                                      const struct sock *sk,
                                       unsigned int res)
 {
         struct sk_filter *filter;
@@ -511,22 +526,22 @@ static inline unsigned int run_filter(struct sk_buff *skb, struct sock *sk,
         rcu_read_lock_bh();
         filter = rcu_dereference_bh(sk->sk_filter);
         if (filter != NULL)
-                res = sk_run_filter(skb, filter->insns, filter->len);
+                res = sk_run_filter(skb, filter->insns);
         rcu_read_unlock_bh();
 
         return res;
 }
 
 /*
-   This function makes lazy skb cloning in hope that most of packets
-   are discarded by BPF.
-
-   Note tricky part: we DO mangle shared skb! skb->data, skb->len
-   and skb->cb are mangled. It works because (and until) packets
-   falling here are owned by current CPU. Output packets are cloned
-   by dev_queue_xmit_nit(), input packets are processed by net_bh
-   sequencially, so that if we return skb to original state on exit,
-   we will not harm anyone.
+ * This function makes lazy skb cloning in hope that most of packets
+ * are discarded by BPF.
+ *
+ * Note tricky part: we DO mangle shared skb! skb->data, skb->len
+ * and skb->cb are mangled. It works because (and until) packets
+ * falling here are owned by current CPU. Output packets are cloned
+ * by dev_queue_xmit_nit(), input packets are processed by net_bh
+ * sequencially, so that if we return skb to original state on exit,
+ * we will not harm anyone.
  */
 
 static int packet_rcv(struct sk_buff *skb, struct net_device *dev,
@@ -552,11 +567,11 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev,
 
         if (dev->header_ops) {
                 /* The device has an explicit notion of ll header,
-                   exported to higher levels.
-
-                   Otherwise, the device hides datails of it frame
-                   structure, so that corresponding packet head
-                   never delivered to user.
+                 * exported to higher levels.
+                 *
+                 * Otherwise, the device hides details of its frame
+                 * structure, so that corresponding packet head is
+                 * never delivered to user.
                  */
                 if (sk->sk_type != SOCK_DGRAM)
                         skb_push(skb, skb->data - skb_mac_header(skb));
@@ -791,17 +806,15 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
 
         __packet_set_status(po, h.raw, status);
         smp_mb();
+#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE == 1
         {
-                struct page *p_start, *p_end;
-                u8 *h_end = h.raw + macoff + snaplen - 1;
-
-                p_start = virt_to_page(h.raw);
-                p_end = virt_to_page(h_end);
-                while (p_start <= p_end) {
-                        flush_dcache_page(p_start);
-                        p_start++;
-                }
+                u8 *start, *end;
+
+                end = (u8 *)PAGE_ALIGN((unsigned long)h.raw + macoff + snaplen);
+                for (start = h.raw; start < end; start += PAGE_SIZE)
+                        flush_dcache_page(pgv_to_page(start));
         }
+#endif
 
         sk->sk_data_ready(sk, 0);
 
@@ -907,7 +920,6 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
         }
 
         err = -EFAULT;
-        page = virt_to_page(data);
         offset = offset_in_page(data);
         len_max = PAGE_SIZE - offset;
         len = ((to_write > len_max) ? len_max : to_write);
@@ -926,11 +938,11 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
                         return -EFAULT;
                 }
 
+                page = pgv_to_page(data);
+                data += len;
                 flush_dcache_page(page);
                 get_page(page);
-                skb_fill_page_desc(skb,
-                                nr_frags,
-                                page++, offset, len);
+                skb_fill_page_desc(skb, nr_frags, page, offset, len);
                 to_write -= len;
                 offset = 0;
                 len_max = PAGE_SIZE;
@@ -1638,8 +1650,7 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock,
 
                 if (skb->ip_summed == CHECKSUM_PARTIAL) {
                         vnet_hdr.flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
-                        vnet_hdr.csum_start = skb->csum_start -
-                                                        skb_headroom(skb);
+                        vnet_hdr.csum_start = skb_checksum_start_offset(skb);
                         vnet_hdr.csum_offset = skb->csum_offset;
                 } /* else everything is zero */
 
@@ -2325,37 +2336,70 @@ static const struct vm_operations_struct packet_mmap_ops = {
         .close  =       packet_mm_close,
 };
 
-static void free_pg_vec(char **pg_vec, unsigned int order, unsigned int len)
+static void free_pg_vec(struct pgv *pg_vec, unsigned int order,
+                        unsigned int len)
 {
         int i;
 
         for (i = 0; i < len; i++) {
-                if (likely(pg_vec[i]))
-                        free_pages((unsigned long) pg_vec[i], order);
+                if (likely(pg_vec[i].buffer)) {
+                        if (is_vmalloc_addr(pg_vec[i].buffer))
+                                vfree(pg_vec[i].buffer);
+                        else
+                                free_pages((unsigned long)pg_vec[i].buffer,
+                                           order);
+                        pg_vec[i].buffer = NULL;
+                }
         }
         kfree(pg_vec);
 }
 
 static inline char *alloc_one_pg_vec_page(unsigned long order)
 {
-        gfp_t gfp_flags = GFP_KERNEL | __GFP_COMP | __GFP_ZERO | __GFP_NOWARN;
+        char *buffer = NULL;
+        gfp_t gfp_flags = GFP_KERNEL | __GFP_COMP |
+                          __GFP_ZERO | __GFP_NOWARN | __GFP_NORETRY;
 
-        return (char *) __get_free_pages(gfp_flags, order);
+        buffer = (char *) __get_free_pages(gfp_flags, order);
+
+        if (buffer)
+                return buffer;
+
+        /*
+         * __get_free_pages failed, fall back to vmalloc
+         */
+        buffer = vzalloc((1 << order) * PAGE_SIZE);
+
+        if (buffer)
+                return buffer;
+
+        /*
+         * vmalloc failed, lets dig into swap here
+         */
+        gfp_flags &= ~__GFP_NORETRY;
+        buffer = (char *)__get_free_pages(gfp_flags, order);
+        if (buffer)
+                return buffer;
+
+        /*
+         * complete and utter failure
+         */
+        return NULL;
 }
 
-static char **alloc_pg_vec(struct tpacket_req *req, int order)
+static struct pgv *alloc_pg_vec(struct tpacket_req *req, int order)
 {
         unsigned int block_nr = req->tp_block_nr;
-        char **pg_vec;
+        struct pgv *pg_vec;
         int i;
 
-        pg_vec = kzalloc(block_nr * sizeof(char *), GFP_KERNEL);
+        pg_vec = kcalloc(block_nr, sizeof(struct pgv), GFP_KERNEL);
         if (unlikely(!pg_vec))
                 goto out;
 
         for (i = 0; i < block_nr; i++) {
-                pg_vec[i] = alloc_one_pg_vec_page(order);
-                if (unlikely(!pg_vec[i]))
+                pg_vec[i].buffer = alloc_one_pg_vec_page(order);
+                if (unlikely(!pg_vec[i].buffer))
                         goto out_free_pgvec;
         }
 
@@ -2371,7 +2415,7 @@ out_free_pgvec:
 static int packet_set_ring(struct sock *sk, struct tpacket_req *req,
                 int closing, int tx_ring)
 {
-        char **pg_vec = NULL;
+        struct pgv *pg_vec = NULL;
         struct packet_sock *po = pkt_sk(sk);
         int was_running, order = 0;
         struct packet_ring_buffer *rb;
@@ -2456,22 +2500,20 @@ static int packet_set_ring(struct sock *sk, struct tpacket_req *req,
         mutex_lock(&po->pg_vec_lock);
         if (closing || atomic_read(&po->mapped) == 0) {
                 err = 0;
-#define XC(a, b) ({ __typeof__ ((a)) __t; __t = (a); (a) = (b); __t; })
                 spin_lock_bh(&rb_queue->lock);
-                pg_vec = XC(rb->pg_vec, pg_vec);
+                swap(rb->pg_vec, pg_vec);
                 rb->frame_max = (req->tp_frame_nr - 1);
                 rb->head = 0;
                 rb->frame_size = req->tp_frame_size;
                 spin_unlock_bh(&rb_queue->lock);
 
-                order = XC(rb->pg_vec_order, order);
-                req->tp_block_nr = XC(rb->pg_vec_len, req->tp_block_nr);
+                swap(rb->pg_vec_order, order);
+                swap(rb->pg_vec_len, req->tp_block_nr);
 
                 rb->pg_vec_pages = req->tp_block_size/PAGE_SIZE;
                 po->prot_hook.func = (po->rx_ring.pg_vec) ?
                                                 tpacket_rcv : packet_rcv;
                 skb_queue_purge(rb_queue);
-#undef XC
                 if (atomic_read(&po->mapped))
                         pr_err("packet_mmap: vma is busy: %d\n",
                                atomic_read(&po->mapped));
@@ -2533,15 +2575,17 @@ static int packet_mmap(struct file *file, struct socket *sock,
                         continue;
 
                 for (i = 0; i < rb->pg_vec_len; i++) {
-                        struct page *page = virt_to_page(rb->pg_vec[i]);
+                        struct page *page;
+                        void *kaddr = rb->pg_vec[i].buffer;
                         int pg_num;
 
-                        for (pg_num = 0; pg_num < rb->pg_vec_pages;
-                                        pg_num++, page++) {
+                        for (pg_num = 0; pg_num < rb->pg_vec_pages; pg_num++) {
+                                page = pgv_to_page(kaddr);
                                 err = vm_insert_page(vma, start, page);
                                 if (unlikely(err))
                                         goto out;
                                 start += PAGE_SIZE;
+                                kaddr += PAGE_SIZE;
                         }
                 }
         }
diff --git a/net/phonet/Makefile b/net/phonet/Makefile
index d62bbba649b3..e10b1b182ce3 100644
--- a/net/phonet/Makefile
+++ b/net/phonet/Makefile
@@ -1,6 +1,6 @@
 obj-$(CONFIG_PHONET) += phonet.o pn_pep.o
 
-phonet-objs := \
+phonet-y := \
         pn_dev.o \
         pn_netlink.o \
         socket.o \
@@ -8,4 +8,4 @@ phonet-objs := \
         sysctl.o \
         af_phonet.o
 
-pn_pep-objs := pep.o pep-gprs.o
+pn_pep-y := pep.o pep-gprs.o
diff --git a/net/rds/Makefile b/net/rds/Makefile
index b46eca109688..56d3f6023ced 100644
--- a/net/rds/Makefile
+++ b/net/rds/Makefile
@@ -4,7 +4,7 @@ rds-y :=	af_rds.o bind.o cong.o connection.o info.o message.o   \
                         loop.o page.o rdma.o
 
 obj-$(CONFIG_RDS_RDMA) += rds_rdma.o
-rds_rdma-objs :=        rdma_transport.o \
+rds_rdma-y :=   rdma_transport.o \
                         ib.o ib_cm.o ib_recv.o ib_ring.o ib_send.o ib_stats.o \
                         ib_sysctl.o ib_rdma.o \
                         iw.o iw_cm.o iw_recv.o iw_ring.o iw_send.o iw_stats.o \
@@ -12,10 +12,8 @@ rds_rdma-objs :=	rdma_transport.o \
 
 
 obj-$(CONFIG_RDS_TCP) += rds_tcp.o
-rds_tcp-objs :=         tcp.o tcp_connect.o tcp_listen.o tcp_recv.o \
+rds_tcp-y :=            tcp.o tcp_connect.o tcp_listen.o tcp_recv.o \
                         tcp_send.o tcp_stats.o
 
-ifeq ($(CONFIG_RDS_DEBUG), y)
-EXTRA_CFLAGS += -DDEBUG
-endif
+ccflags-$(CONFIG_RDS_DEBUG)     :=      -DDEBUG
 
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 04f599089e6d..0198191b756d 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -149,20 +149,6 @@ static void rfkill_led_trigger_activate(struct led_classdev *led)
         rfkill_led_trigger_event(rfkill);
 }
 
-const char *rfkill_get_led_trigger_name(struct rfkill *rfkill)
-{
-        return rfkill->led_trigger.name;
-}
-EXPORT_SYMBOL(rfkill_get_led_trigger_name);
-
-void rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name)
-{
-        BUG_ON(!rfkill);
-
-        rfkill->ledtrigname = name;
-}
-EXPORT_SYMBOL(rfkill_set_led_trigger_name);
-
 static int rfkill_led_trigger_register(struct rfkill *rfkill)
 {
         rfkill->led_trigger.name = rfkill->ledtrigname
diff --git a/net/rxrpc/Makefile b/net/rxrpc/Makefile
index c46867c61c98..d1c3429b69ed 100644
--- a/net/rxrpc/Makefile
+++ b/net/rxrpc/Makefile
@@ -2,7 +2,7 @@
 # Makefile for Linux kernel RxRPC
 #
 
-af-rxrpc-objs := \
+af-rxrpc-y := \
         af_rxrpc.o \
         ar-accept.o \
         ar-ack.o \
@@ -21,7 +21,7 @@ af-rxrpc-objs := \
         ar-transport.o
 
 ifeq ($(CONFIG_PROC_FS),y)
-af-rxrpc-objs += ar-proc.o
+af-rxrpc-y += ar-proc.o
 endif
 
 obj-$(CONFIG_AF_RXRPC) += af-rxrpc.o
diff --git a/net/rxrpc/ar-peer.c b/net/rxrpc/ar-peer.c
index 9f1729bd60de..a53fb25a64ed 100644
--- a/net/rxrpc/ar-peer.c
+++ b/net/rxrpc/ar-peer.c
@@ -47,12 +47,12 @@ static void rxrpc_assess_MTU_size(struct rxrpc_peer *peer)
         case AF_INET:
                 fl.oif = 0;
                 fl.proto = IPPROTO_UDP,
-                fl.nl_u.ip4_u.saddr = 0;
-                fl.nl_u.ip4_u.daddr = peer->srx.transport.sin.sin_addr.s_addr;
-                fl.nl_u.ip4_u.tos = 0;
+                fl.fl4_dst = peer->srx.transport.sin.sin_addr.s_addr;
+                fl.fl4_src = 0;
+                fl.fl4_tos = 0;
                 /* assume AFS.CM talking to AFS.FS */
-                fl.uli_u.ports.sport = htons(7001);
-                fl.uli_u.ports.dport = htons(7000);
+                fl.fl_ip_sport = htons(7001);
+                fl.fl_ip_dport = htons(7000);
                 break;
         default:
                 BUG();
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 5dbb3cd96e59..34dc598440a2 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -60,8 +60,7 @@ static inline struct sk_buff *dequeue_skb(struct Qdisc *q)
 
                 /* check the reason of requeuing without tx lock first */
                 txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
-                if (!netif_tx_queue_stopped(txq) &&
-                    !netif_tx_queue_frozen(txq)) {
+                if (!netif_tx_queue_frozen_or_stopped(txq)) {
                         q->gso_skb = NULL;
                         q->q.qlen--;
                 } else
@@ -122,7 +121,7 @@ int sch_direct_xmit(struct sk_buff *skb, struct Qdisc *q,
         spin_unlock(root_lock);
 
         HARD_TX_LOCK(dev, txq, smp_processor_id());
-        if (!netif_tx_queue_stopped(txq) && !netif_tx_queue_frozen(txq))
+        if (!netif_tx_queue_frozen_or_stopped(txq))
                 ret = dev_hard_start_xmit(skb, dev, txq);
 
         HARD_TX_UNLOCK(dev, txq);
@@ -144,8 +143,7 @@ int sch_direct_xmit(struct sk_buff *skb, struct Qdisc *q,
                 ret = dev_requeue_skb(skb, q);
         }
 
-        if (ret && (netif_tx_queue_stopped(txq) ||
-                    netif_tx_queue_frozen(txq)))
+        if (ret && netif_tx_queue_frozen_or_stopped(txq))
                 ret = 0;
 
         return ret;
@@ -555,7 +553,9 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
         size = QDISC_ALIGN(sizeof(*sch));
         size += ops->priv_size + (QDISC_ALIGNTO - 1);
 
-        p = kzalloc(size, GFP_KERNEL);
+        p = kzalloc_node(size, GFP_KERNEL,
+                         netdev_queue_numa_node_read(dev_queue));
+
         if (!p)
                 goto errout;
         sch = (struct Qdisc *) QDISC_ALIGN((unsigned long) p);
@@ -810,20 +810,35 @@ static bool some_qdisc_is_busy(struct net_device *dev)
         return false;
 }
 
-void dev_deactivate(struct net_device *dev)
+void dev_deactivate_many(struct list_head *head)
 {
-        netdev_for_each_tx_queue(dev, dev_deactivate_queue, &noop_qdisc);
-        if (dev_ingress_queue(dev))
-                dev_deactivate_queue(dev, dev_ingress_queue(dev), &noop_qdisc);
+        struct net_device *dev;
+
+        list_for_each_entry(dev, head, unreg_list) {
+                netdev_for_each_tx_queue(dev, dev_deactivate_queue,
+                                         &noop_qdisc);
+                if (dev_ingress_queue(dev))
+                        dev_deactivate_queue(dev, dev_ingress_queue(dev),
+                                             &noop_qdisc);
 
-        dev_watchdog_down(dev);
+                dev_watchdog_down(dev);
+        }
 
         /* Wait for outstanding qdisc-less dev_queue_xmit calls. */
         synchronize_rcu();
 
         /* Wait for outstanding qdisc_run calls. */
-        while (some_qdisc_is_busy(dev))
-                yield();
+        list_for_each_entry(dev, head, unreg_list)
+                while (some_qdisc_is_busy(dev))
+                        yield();
+}
+
+void dev_deactivate(struct net_device *dev)
+{
+        LIST_HEAD(single);
+
+        list_add(&dev->unreg_list, &single);
+        dev_deactivate_many(&single);
 }
 
 static void dev_init_scheduler_queue(struct net_device *dev,
diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c
index 401af9596709..106479a7c94a 100644
--- a/net/sched/sch_teql.c
+++ b/net/sched/sch_teql.c
@@ -309,8 +309,7 @@ restart:
                         if (__netif_tx_trylock(slave_txq)) {
                                 unsigned int length = qdisc_pkt_len(skb);
 
-                                if (!netif_tx_queue_stopped(slave_txq) &&
-                                    !netif_tx_queue_frozen(slave_txq) &&
+                                if (!netif_tx_queue_frozen_or_stopped(slave_txq) &&
                                     slave_ops->ndo_start_xmit(skb, slave) == NETDEV_TX_OK) {
                                         txq_trans_update(slave_txq);
                                         __netif_tx_unlock(slave_txq);
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index fff0926b1111..a09b0dd25f50 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -6055,7 +6055,7 @@ static struct sk_buff *sctp_skb_recv_datagram(struct sock *sk, int flags,
                  * will suddenly eat the receive_queue.
                  *
                  *  Look at current nfs client by the way...
-                 *  However, this function was corrent in any case. 8)
+                 *  However, this function was correct in any case. 8)
                  */
                 if (flags & MSG_PEEK) {
                         spin_lock_bh(&sk->sk_receive_queue.lock);
diff --git a/net/socket.c b/net/socket.c
index 088fb3fd45e0..c1663c0ff3d3 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -156,7 +156,7 @@ static const struct file_operations socket_file_ops = {
  */
 
 static DEFINE_SPINLOCK(net_family_lock);
-static const struct net_proto_family *net_families[NPROTO] __read_mostly;
+static const struct net_proto_family __rcu *net_families[NPROTO] __read_mostly;
 
 /*
  *      Statistics counters of the socket lists
@@ -1215,7 +1215,7 @@ int __sock_create(struct net *net, int family, int type, int protocol,
          * requested real, full-featured networking support upon configuration.
          * Otherwise module support will break!
          */
-        if (net_families[family] == NULL)
+        if (rcu_access_pointer(net_families[family]) == NULL)
                 request_module("net-pf-%d", family);
 #endif
 
@@ -2347,10 +2347,11 @@ int sock_register(const struct net_proto_family *ops)
         }
 
         spin_lock(&net_family_lock);
-        if (net_families[ops->family])
+        if (rcu_dereference_protected(net_families[ops->family],
+                                      lockdep_is_held(&net_family_lock)))
                 err = -EEXIST;
         else {
-                net_families[ops->family] = ops;
+                rcu_assign_pointer(net_families[ops->family], ops);
                 err = 0;
         }
         spin_unlock(&net_family_lock);
@@ -2378,7 +2379,7 @@ void sock_unregister(int family)
         BUG_ON(family < 0 || family >= NPROTO);
 
         spin_lock(&net_family_lock);
-        net_families[family] = NULL;
+        rcu_assign_pointer(net_families[family], NULL);
         spin_unlock(&net_family_lock);
 
         synchronize_rcu();
diff --git a/net/sunrpc/auth_gss/Makefile b/net/sunrpc/auth_gss/Makefile
index 7350d86a32ee..9e4cb59ef9f0 100644
--- a/net/sunrpc/auth_gss/Makefile
+++ b/net/sunrpc/auth_gss/Makefile
@@ -4,10 +4,10 @@
 
 obj-$(CONFIG_SUNRPC_GSS) += auth_rpcgss.o
 
-auth_rpcgss-objs := auth_gss.o gss_generic_token.o \
+auth_rpcgss-y := auth_gss.o gss_generic_token.o \
         gss_mech_switch.o svcauth_gss.o
 
 obj-$(CONFIG_RPCSEC_GSS_KRB5) += rpcsec_gss_krb5.o
 
-rpcsec_gss_krb5-objs := gss_krb5_mech.o gss_krb5_seal.o gss_krb5_unseal.o \
+rpcsec_gss_krb5-y := gss_krb5_mech.o gss_krb5_seal.o gss_krb5_unseal.o \
         gss_krb5_seqnum.o gss_krb5_wrap.o gss_krb5_crypto.o gss_krb5_keys.o
diff --git a/net/tipc/addr.c b/net/tipc/addr.c
index 8a2e89bffde5..886715a75259 100644
--- a/net/tipc/addr.c
+++ b/net/tipc/addr.c
@@ -35,11 +35,9 @@
  */
 
 #include "core.h"
-#include "dbg.h"
 #include "addr.h"
 #include "zone.h"
 #include "cluster.h"
-#include "net.h"
 
 /**
  * tipc_addr_domain_valid - validates a network domain address
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index 22a60fc98392..6d828d9eda42 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -36,17 +36,9 @@
  */
 
 #include "core.h"
-#include "msg.h"
-#include "dbg.h"
 #include "link.h"
-#include "net.h"
-#include "node.h"
 #include "port.h"
-#include "addr.h"
-#include "node_subscr.h"
 #include "name_distr.h"
-#include "bearer.h"
-#include "name_table.h"
 #include "bcast.h"
 
 #define MAX_PKT_DEFAULT_MCAST 1500      /* bcast link max packet size (fixed) */
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 9927d1d56c4f..885da94be4ac 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -36,12 +36,9 @@
 
 #include "core.h"
 #include "config.h"
-#include "dbg.h"
 #include "bearer.h"
-#include "link.h"
 #include "port.h"
 #include "discover.h"
-#include "bcast.h"
 
 #define MAX_ADDR_STR 32
 
@@ -625,7 +622,7 @@ int tipc_block_bearer(const char *name)
  * Note: This routine assumes caller holds tipc_net_lock.
  */
 
-static int bearer_disable(struct bearer *b_ptr)
+static void bearer_disable(struct bearer *b_ptr)
 {
         struct link *l_ptr;
         struct link *temp_l_ptr;
@@ -641,7 +638,6 @@ static int bearer_disable(struct bearer *b_ptr)
         }
         spin_unlock_bh(&b_ptr->publ.lock);
         memset(b_ptr, 0, sizeof(struct bearer));
-        return 0;
 }
 
 int tipc_disable_bearer(const char *name)
@@ -654,8 +650,10 @@ int tipc_disable_bearer(const char *name)
         if (b_ptr == NULL) {
                 warn("Attempt to disable unknown bearer <%s>\n", name);
                 res = -EINVAL;
-        } else
-                res = bearer_disable(b_ptr);
+        } else {
+                bearer_disable(b_ptr);
+                res = 0;
+        }
         write_unlock_bh(&tipc_net_lock);
         return res;
 }
diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h
index a850b389663e..85f451d5aacf 100644
--- a/net/tipc/bearer.h
+++ b/net/tipc/bearer.h
@@ -37,12 +37,50 @@
 #ifndef _TIPC_BEARER_H
 #define _TIPC_BEARER_H
 
-#include "core.h"
 #include "bcast.h"
 
 #define MAX_BEARERS 8
 #define MAX_MEDIA 4
 
+/*
+ * Identifiers of supported TIPC media types
+ */
+#define TIPC_MEDIA_TYPE_ETH     1
+
+/*
+ * Destination address structure used by TIPC bearers when sending messages
+ *
+ * IMPORTANT: The fields of this structure MUST be stored using the specified
+ * byte order indicated below, as the structure is exchanged between nodes
+ * as part of a link setup process.
+ */
+struct tipc_media_addr {
+        __be32  type;                   /* bearer type (network byte order) */
+        union {
+                __u8   eth_addr[6];     /* 48 bit Ethernet addr (byte array) */
+        } dev_addr;
+};
+
+/**
+ * struct tipc_bearer - TIPC bearer info available to media code
+ * @usr_handle: pointer to additional media-specific information about bearer
+ * @mtu: max packet size bearer can support
+ * @blocked: non-zero if bearer is blocked
+ * @lock: spinlock for controlling access to bearer
+ * @addr: media-specific address associated with bearer
+ * @name: bearer name (format = media:interface)
+ *
+ * Note: TIPC initializes "name" and "lock" fields; media code is responsible
+ * for initialization all other fields when a bearer is enabled.
+ */
+struct tipc_bearer {
+        void *usr_handle;
+        u32 mtu;
+        int blocked;
+        spinlock_t lock;
+        struct tipc_media_addr addr;
+        char name[TIPC_MAX_BEARER_NAME];
+};
 
 /**
  * struct media - TIPC media information available to internal users
@@ -55,7 +93,7 @@
  * @priority: default link (and bearer) priority
  * @tolerance: default time (in ms) before declaring link failure
  * @window: default window (in packets) before declaring link congestion
- * @type_id: TIPC media identifier [defined in tipc_bearer.h]
+ * @type_id: TIPC media identifier
  * @name: media name
  */
 
@@ -116,6 +154,34 @@ struct link;
 
 extern struct bearer tipc_bearers[];
 
+/*
+ * TIPC routines available to supported media types
+ */
+int tipc_register_media(u32 media_type,
+                 char *media_name, int (*enable)(struct tipc_bearer *),
+                 void (*disable)(struct tipc_bearer *),
+                 int (*send_msg)(struct sk_buff *,
+                        struct tipc_bearer *, struct tipc_media_addr *),
+                 char *(*addr2str)(struct tipc_media_addr *a,
+                        char *str_buf, int str_size),
+                 struct tipc_media_addr *bcast_addr, const u32 bearer_priority,
+                 const u32 link_tolerance,  /* [ms] */
+                 const u32 send_window_limit);
+
+void tipc_recv_msg(struct sk_buff *buf, struct tipc_bearer *tb_ptr);
+
+int  tipc_block_bearer(const char *name);
+void tipc_continue(struct tipc_bearer *tb_ptr);
+
+int tipc_enable_bearer(const char *bearer_name, u32 bcast_scope, u32 priority);
+int tipc_disable_bearer(const char *name);
+
+/*
+ * Routines made available to TIPC by supported media types
+ */
+int  tipc_eth_media_start(void);
+void tipc_eth_media_stop(void);
+
 void tipc_media_addr_printf(struct print_buf *pb, struct tipc_media_addr *a);
 struct sk_buff *tipc_media_get_names(void);
 
@@ -126,7 +192,6 @@ void tipc_bearer_schedule(struct bearer *b_ptr, struct link *l_ptr);
 struct bearer *tipc_bearer_find_interface(const char *if_name);
 int tipc_bearer_resolve_congestion(struct bearer *b_ptr, struct link *l_ptr);
 int tipc_bearer_congested(struct bearer *b_ptr, struct link *l_ptr);
-int tipc_bearer_init(void);
 void tipc_bearer_stop(void);
 void tipc_bearer_lock_push(struct bearer *b_ptr);
 
diff --git a/net/tipc/cluster.c b/net/tipc/cluster.c
index 7fea14b98b97..405be87157ba 100644
--- a/net/tipc/cluster.c
+++ b/net/tipc/cluster.c
@@ -36,17 +36,10 @@
 
 #include "core.h"
 #include "cluster.h"
-#include "addr.h"
-#include "node_subscr.h"
 #include "link.h"
-#include "node.h"
-#include "net.h"
-#include "msg.h"
-#include "bearer.h"
 
 static void tipc_cltr_multicast(struct cluster *c_ptr, struct sk_buff *buf,
                                 u32 lower, u32 upper);
-static struct sk_buff *tipc_cltr_prepare_routing_msg(u32 data_size, u32 dest);
 
 struct tipc_node **tipc_local_nodes = NULL;
 struct tipc_node_map tipc_cltr_bcast_nodes = {0,{0,}};
diff --git a/net/tipc/config.c b/net/tipc/config.c
index 50a6133a3668..bdde39f0436b 100644
--- a/net/tipc/config.c
+++ b/net/tipc/config.c
@@ -35,23 +35,11 @@
  */
 
 #include "core.h"
-#include "dbg.h"
-#include "bearer.h"
 #include "port.h"
 #include "link.h"
-#include "zone.h"
-#include "addr.h"
 #include "name_table.h"
-#include "node.h"
+#include "user_reg.h"
 #include "config.h"
-#include "discover.h"
-
-struct subscr_data {
-        char usr_handle[8];
-        u32 domain;
-        u32 port_ref;
-        struct list_head subd_list;
-};
 
 struct manager {
         u32 user_ref;
@@ -572,7 +560,7 @@ int tipc_cfg_init(void)
         struct tipc_name_seq seq;
         int res;
 
-        res = tipc_attach(&mng.user_ref, NULL, NULL);
+        res = tipc_attach(&mng.user_ref);
         if (res)
                 goto failed;
 
diff --git a/net/tipc/config.h b/net/tipc/config.h
index 481e12ece715..443159a166fd 100644
--- a/net/tipc/config.h
+++ b/net/tipc/config.h
@@ -39,7 +39,6 @@
 
 /* ---------------------------------------------------------------------- */
 
-#include "core.h"
 #include "link.h"
 
 struct sk_buff *tipc_cfg_reply_alloc(int payload_size);
diff --git a/net/tipc/core.c b/net/tipc/core.c
index e2a09eb8efd4..f5d62c174de2 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -40,7 +40,6 @@
 #include <linux/random.h>
 
 #include "core.h"
-#include "dbg.h"
 #include "ref.h"
 #include "net.h"
 #include "user_reg.h"
@@ -236,43 +235,3 @@ module_exit(tipc_exit);
 MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_VERSION(TIPC_MOD_VER);
-
-/* Native TIPC API for kernel-space applications (see tipc.h) */
-
-EXPORT_SYMBOL(tipc_attach);
-EXPORT_SYMBOL(tipc_detach);
-EXPORT_SYMBOL(tipc_createport);
-EXPORT_SYMBOL(tipc_deleteport);
-EXPORT_SYMBOL(tipc_ownidentity);
-EXPORT_SYMBOL(tipc_portimportance);
-EXPORT_SYMBOL(tipc_set_portimportance);
-EXPORT_SYMBOL(tipc_portunreliable);
-EXPORT_SYMBOL(tipc_set_portunreliable);
-EXPORT_SYMBOL(tipc_portunreturnable);
-EXPORT_SYMBOL(tipc_set_portunreturnable);
-EXPORT_SYMBOL(tipc_publish);
-EXPORT_SYMBOL(tipc_withdraw);
-EXPORT_SYMBOL(tipc_connect2port);
-EXPORT_SYMBOL(tipc_disconnect);
-EXPORT_SYMBOL(tipc_shutdown);
-EXPORT_SYMBOL(tipc_send);
-EXPORT_SYMBOL(tipc_send2name);
-EXPORT_SYMBOL(tipc_send2port);
-EXPORT_SYMBOL(tipc_multicast);
-
-/* TIPC API for external bearers (see tipc_bearer.h) */
-
-EXPORT_SYMBOL(tipc_block_bearer);
-EXPORT_SYMBOL(tipc_continue);
-EXPORT_SYMBOL(tipc_disable_bearer);
-EXPORT_SYMBOL(tipc_enable_bearer);
-EXPORT_SYMBOL(tipc_recv_msg);
-EXPORT_SYMBOL(tipc_register_media);
-
-/* TIPC API for external APIs (see tipc_port.h) */
-
-EXPORT_SYMBOL(tipc_createport_raw);
-EXPORT_SYMBOL(tipc_reject_msg);
-EXPORT_SYMBOL(tipc_send_buf_fast);
-EXPORT_SYMBOL(tipc_acknowledge);
-
diff --git a/net/tipc/core.h b/net/tipc/core.h
index e19389e57227..ca7e171c1043 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -39,10 +39,6 @@
 
 #include <linux/tipc.h>
 #include <linux/tipc_config.h>
-#include <net/tipc/tipc_msg.h>
-#include <net/tipc/tipc_port.h>
-#include <net/tipc/tipc_bearer.h>
-#include <net/tipc/tipc.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
@@ -62,6 +58,9 @@
 
 #define TIPC_MOD_VER "2.0.0"
 
+struct tipc_msg;        /* msg.h */
+struct print_buf;       /* dbg.h */
+
 /*
  * TIPC sanity test macros
  */
@@ -174,6 +173,13 @@ void tipc_dump_dbg(struct print_buf *, const char *fmt, ...);
 #define ELINKCONG EAGAIN        /* link congestion <=> resource unavailable */
 
 /*
+ * TIPC operating mode routines
+ */
+#define TIPC_NOT_RUNNING  0
+#define TIPC_NODE_MODE    1
+#define TIPC_NET_MODE     2
+
+/*
  * Global configuration variables
  */
 
diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index 4a7cd3719b78..f2ce36baf42e 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -35,9 +35,7 @@
  */
 
 #include "core.h"
-#include "dbg.h"
 #include "link.h"
-#include "zone.h"
 #include "discover.h"
 #include "port.h"
 #include "name_table.h"
diff --git a/net/tipc/discover.h b/net/tipc/discover.h
index f8e750636123..d2c3cffb79fc 100644
--- a/net/tipc/discover.h
+++ b/net/tipc/discover.h
@@ -37,8 +37,6 @@
 #ifndef _TIPC_DISCOVER_H
 #define _TIPC_DISCOVER_H
 
-#include "core.h"
-
 struct link_req;
 
 struct link_req *tipc_disc_init_link_req(struct bearer *b_ptr,
diff --git a/net/tipc/eth_media.c b/net/tipc/eth_media.c
index 6e988ba485fd..ee683cc8f4b1 100644
--- a/net/tipc/eth_media.c
+++ b/net/tipc/eth_media.c
@@ -34,13 +34,13 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <net/tipc/tipc.h>
-#include <net/tipc/tipc_bearer.h>
-#include <net/tipc/tipc_msg.h>
 #include <linux/netdevice.h>
 #include <linux/slab.h>
 #include <net/net_namespace.h>
 
+#include "core.h"
+#include "bearer.h"
+
 #define MAX_ETH_BEARERS         2
 #define ETH_LINK_PRIORITY       TIPC_DEF_LINK_PRI
 #define ETH_LINK_TOLERANCE      TIPC_DEF_LINK_TOL
diff --git a/net/tipc/link.c b/net/tipc/link.c
index b31992ccd5d3..cf414cf05e72 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -35,19 +35,11 @@
  */
 
 #include "core.h"
-#include "dbg.h"
 #include "link.h"
-#include "net.h"
-#include "node.h"
 #include "port.h"
-#include "addr.h"
-#include "node_subscr.h"
 #include "name_distr.h"
-#include "bearer.h"
-#include "name_table.h"
 #include "discover.h"
 #include "config.h"
-#include "bcast.h"
 
 
 /*
@@ -57,12 +49,6 @@
 #define INVALID_SESSION 0x10000
 
 /*
- * Limit for deferred reception queue:
- */
-
-#define DEF_QUEUE_LIMIT 256u
-
-/*
  * Link state events:
  */
 
diff --git a/net/tipc/link.h b/net/tipc/link.h
index f98bc613de67..c562888d25da 100644
--- a/net/tipc/link.h
+++ b/net/tipc/link.h
@@ -39,7 +39,6 @@
 
 #include "dbg.h"
 #include "msg.h"
-#include "bearer.h"
 #include "node.h"
 
 #define PUSH_FAILED   1
diff --git a/net/tipc/msg.c b/net/tipc/msg.c
index ecb532fb0351..ee6b4c68d4a4 100644
--- a/net/tipc/msg.c
+++ b/net/tipc/msg.c
@@ -36,9 +36,7 @@
 
 #include "core.h"
 #include "addr.h"
-#include "dbg.h"
 #include "msg.h"
-#include "bearer.h"
 
 u32 tipc_msg_tot_importance(struct tipc_msg *m)
 {
diff --git a/net/tipc/msg.h b/net/tipc/msg.h
index 031aad18efce..aee53864d7a0 100644
--- a/net/tipc/msg.h
+++ b/net/tipc/msg.h
@@ -37,10 +37,51 @@
 #ifndef _TIPC_MSG_H
 #define _TIPC_MSG_H
 
-#include "core.h"
+#include "bearer.h"
 
 #define TIPC_VERSION              2
 
+/*
+ *              TIPC user data message header format, version 2:
+ *
+ *
+ *     1 0 9 8 7 6 5 4|3 2 1 0 9 8 7 6|5 4 3 2 1 0 9 8|7 6 5 4 3 2 1 0
+ *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * w0:|vers | user  |hdr sz |n|d|s|-|          message size           |
+ *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * w1:|mstyp| error |rer cnt|lsc|opt p|      broadcast ack no         |
+ *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * w2:|        link level ack no      |   broadcast/link level seq no |
+ *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * w3:|                       previous node                           |
+ *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * w4:|                      originating port                         |
+ *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * w5:|                      destination port                         |
+ *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * w6:|                      originating node                         |
+ *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * w7:|                      destination node                         |
+ *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * w8:|            name type / transport sequence number              |
+ *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * w9:|              name instance/multicast lower bound              |
+ *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * wA:|                    multicast upper bound                      |
+ *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *    /                                                               /
+ *    \                           options                             \
+ *    /                                                               /
+ *    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ */
+
+#define TIPC_CONN_MSG           0
+#define TIPC_MCAST_MSG          1
+#define TIPC_NAMED_MSG          2
+#define TIPC_DIRECT_MSG         3
+
+
 #define SHORT_H_SIZE              24    /* Connected, in-cluster messages */
 #define DIR_MSG_H_SIZE            32    /* Directly addressed messages */
 #define LONG_H_SIZE               40    /* Named messages */
@@ -52,20 +93,26 @@
 #define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE)
 
 
-/*
-                TIPC user data message header format, version 2
+struct tipc_msg {
+        __be32 hdr[15];
+};
 
-        - Fundamental definitions available to privileged TIPC users
-          are located in tipc_msg.h.
-        - Remaining definitions available to TIPC internal users appear below.
-*/
 
+static inline u32 msg_word(struct tipc_msg *m, u32 pos)
+{
+        return ntohl(m->hdr[pos]);
+}
 
 static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val)
 {
         m->hdr[w] = htonl(val);
 }
 
+static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask)
+{
+        return (msg_word(m, w) >> pos) & mask;
+}
+
 static inline void msg_set_bits(struct tipc_msg *m, u32 w,
                                 u32 pos, u32 mask, u32 val)
 {
@@ -112,16 +159,36 @@ static inline void msg_set_user(struct tipc_msg *m, u32 n)
         msg_set_bits(m, 0, 25, 0xf, n);
 }
 
+static inline u32 msg_importance(struct tipc_msg *m)
+{
+        return msg_bits(m, 0, 25, 0xf);
+}
+
 static inline void msg_set_importance(struct tipc_msg *m, u32 i)
 {
         msg_set_user(m, i);
 }
 
+static inline u32 msg_hdr_sz(struct tipc_msg *m)
+{
+        return msg_bits(m, 0, 21, 0xf) << 2;
+}
+
 static inline void msg_set_hdr_sz(struct tipc_msg *m,u32 n)
 {
         msg_set_bits(m, 0, 21, 0xf, n>>2);
 }
 
+static inline u32 msg_size(struct tipc_msg *m)
+{
+        return msg_bits(m, 0, 0, 0x1ffff);
+}
+
+static inline u32 msg_data_sz(struct tipc_msg *m)
+{
+        return msg_size(m) - msg_hdr_sz(m);
+}
+
 static inline int msg_non_seq(struct tipc_msg *m)
 {
         return msg_bits(m, 0, 20, 1);
@@ -162,11 +229,36 @@ static inline void msg_set_size(struct tipc_msg *m, u32 sz)
  * Word 1
  */
 
+static inline u32 msg_type(struct tipc_msg *m)
+{
+        return msg_bits(m, 1, 29, 0x7);
+}
+
 static inline void msg_set_type(struct tipc_msg *m, u32 n)
 {
         msg_set_bits(m, 1, 29, 0x7, n);
 }
 
+static inline u32 msg_named(struct tipc_msg *m)
+{
+        return msg_type(m) == TIPC_NAMED_MSG;
+}
+
+static inline u32 msg_mcast(struct tipc_msg *m)
+{
+        return msg_type(m) == TIPC_MCAST_MSG;
+}
+
+static inline u32 msg_connected(struct tipc_msg *m)
+{
+        return msg_type(m) == TIPC_CONN_MSG;
+}
+
+static inline u32 msg_errcode(struct tipc_msg *m)
+{
+        return msg_bits(m, 1, 25, 0xf);
+}
+
 static inline void msg_set_errcode(struct tipc_msg *m, u32 err)
 {
         msg_set_bits(m, 1, 25, 0xf, err);
@@ -257,31 +349,68 @@ static inline void msg_set_destnode_cache(struct tipc_msg *m, u32 dnode)
  */
 
 
+static inline u32 msg_prevnode(struct tipc_msg *m)
+{
+        return msg_word(m, 3);
+}
+
 static inline void msg_set_prevnode(struct tipc_msg *m, u32 a)
 {
         msg_set_word(m, 3, a);
 }
 
+static inline u32 msg_origport(struct tipc_msg *m)
+{
+        return msg_word(m, 4);
+}
+
 static inline void msg_set_origport(struct tipc_msg *m, u32 p)
 {
         msg_set_word(m, 4, p);
 }
 
+static inline u32 msg_destport(struct tipc_msg *m)
+{
+        return msg_word(m, 5);
+}
+
 static inline void msg_set_destport(struct tipc_msg *m, u32 p)
 {
         msg_set_word(m, 5, p);
 }
 
+static inline u32 msg_mc_netid(struct tipc_msg *m)
+{
+        return msg_word(m, 5);
+}
+
 static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p)
 {
         msg_set_word(m, 5, p);
 }
 
+static inline int msg_short(struct tipc_msg *m)
+{
+        return msg_hdr_sz(m) == 24;
+}
+
+static inline u32 msg_orignode(struct tipc_msg *m)
+{
+        if (likely(msg_short(m)))
+                return msg_prevnode(m);
+        return msg_word(m, 6);
+}
+
 static inline void msg_set_orignode(struct tipc_msg *m, u32 a)
 {
         msg_set_word(m, 6, a);
 }
 
+static inline u32 msg_destnode(struct tipc_msg *m)
+{
+        return msg_word(m, 7);
+}
+
 static inline void msg_set_destnode(struct tipc_msg *m, u32 a)
 {
         msg_set_word(m, 7, a);
@@ -299,6 +428,11 @@ static inline u32 msg_routed(struct tipc_msg *m)
         return(msg_destnode(m) ^ msg_orignode(m)) >> 11;
 }
 
+static inline u32 msg_nametype(struct tipc_msg *m)
+{
+        return msg_word(m, 8);
+}
+
 static inline void msg_set_nametype(struct tipc_msg *m, u32 n)
 {
         msg_set_word(m, 8, n);
@@ -324,6 +458,16 @@ static inline void msg_set_transp_seqno(struct tipc_msg *m, u32 n)
         msg_set_word(m, 8, n);
 }
 
+static inline u32 msg_nameinst(struct tipc_msg *m)
+{
+        return msg_word(m, 9);
+}
+
+static inline u32 msg_namelower(struct tipc_msg *m)
+{
+        return msg_nameinst(m);
+}
+
 static inline void msg_set_namelower(struct tipc_msg *m, u32 n)
 {
         msg_set_word(m, 9, n);
@@ -334,11 +478,21 @@ static inline void msg_set_nameinst(struct tipc_msg *m, u32 n)
         msg_set_namelower(m, n);
 }
 
+static inline u32 msg_nameupper(struct tipc_msg *m)
+{
+        return msg_word(m, 10);
+}
+
 static inline void msg_set_nameupper(struct tipc_msg *m, u32 n)
 {
         msg_set_word(m, 10, n);
 }
 
+static inline unchar *msg_data(struct tipc_msg *m)
+{
+        return ((unchar *)m) + msg_hdr_sz(m);
+}
+
 static inline struct tipc_msg *msg_get_wrapped(struct tipc_msg *m)
 {
         return (struct tipc_msg *)msg_data(m);
diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c
index 7b907171f879..10ff48be3c01 100644
--- a/net/tipc/name_distr.c
+++ b/net/tipc/name_distr.c
@@ -36,9 +36,7 @@
 
 #include "core.h"
 #include "cluster.h"
-#include "dbg.h"
 #include "link.h"
-#include "msg.h"
 #include "name_distr.h"
 
 #define ITEM_SIZE sizeof(struct distr_item)
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c
index 3a8de4334da1..d5adb0456746 100644
--- a/net/tipc/name_table.c
+++ b/net/tipc/name_table.c
@@ -36,15 +36,10 @@
 
 #include "core.h"
 #include "config.h"
-#include "dbg.h"
 #include "name_table.h"
 #include "name_distr.h"
-#include "addr.h"
-#include "node_subscr.h"
 #include "subscr.h"
 #include "port.h"
-#include "cluster.h"
-#include "bcast.h"
 
 static int tipc_nametbl_size = 1024;            /* must be a power of 2 */
 
diff --git a/net/tipc/net.c b/net/tipc/net.c
index 1a621cfd6604..c2b4b86c2e6a 100644
--- a/net/tipc/net.c
+++ b/net/tipc/net.c
@@ -35,18 +35,13 @@
  */
 
 #include "core.h"
-#include "bearer.h"
 #include "net.h"
 #include "zone.h"
-#include "addr.h"
 #include "name_table.h"
 #include "name_distr.h"
 #include "subscr.h"
 #include "link.h"
-#include "msg.h"
 #include "port.h"
-#include "bcast.h"
-#include "discover.h"
 #include "config.h"
 
 /*
diff --git a/net/tipc/node.c b/net/tipc/node.c
index b4d87eb2dc5d..df71dfc3a9ae 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -37,16 +37,9 @@
 #include "core.h"
 #include "config.h"
 #include "node.h"
-#include "cluster.h"
-#include "net.h"
-#include "addr.h"
-#include "node_subscr.h"
-#include "link.h"
 #include "port.h"
-#include "bearer.h"
 #include "name_distr.h"
 
-void node_print(struct print_buf *buf, struct tipc_node *n_ptr, char *str);
 static void node_lost_contact(struct tipc_node *n_ptr);
 static void node_established_contact(struct tipc_node *n_ptr);
 
diff --git a/net/tipc/node_subscr.c b/net/tipc/node_subscr.c
index 19194d476a9e..018a55332d91 100644
--- a/net/tipc/node_subscr.c
+++ b/net/tipc/node_subscr.c
@@ -35,10 +35,8 @@
  */
 
 #include "core.h"
-#include "dbg.h"
 #include "node_subscr.h"
 #include "node.h"
-#include "addr.h"
 
 /**
  * tipc_nodesub_subscribe - create "node down" subscription for specified node
diff --git a/net/tipc/port.c b/net/tipc/port.c
index 82092eaa1536..7873283f4965 100644
--- a/net/tipc/port.c
+++ b/net/tipc/port.c
@@ -36,15 +36,9 @@
 
 #include "core.h"
 #include "config.h"
-#include "dbg.h"
 #include "port.h"
-#include "addr.h"
-#include "link.h"
-#include "node.h"
 #include "name_table.h"
 #include "user_reg.h"
-#include "msg.h"
-#include "bcast.h"
 
 /* Connection management: */
 #define PROBING_INTERVAL 3600000        /* [ms] => 1 h */
@@ -94,7 +88,7 @@ static void port_incr_out_seqno(struct port *p_ptr)
  * tipc_multicast - send a multicast message to local and remote destinations
  */
 
-int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, u32 domain,
+int tipc_multicast(u32 ref, struct tipc_name_seq const *seq,
                    u32 num_sect, struct iovec const *msg_sect)
 {
         struct tipc_msg *hdr;
@@ -989,13 +983,6 @@ int tipc_createport(u32 user_ref,
         return 0;
 }
 
-int tipc_ownidentity(u32 ref, struct tipc_portid *id)
-{
-        id->ref = ref;
-        id->node = tipc_own_addr;
-        return 0;
-}
-
 int tipc_portimportance(u32 ref, unsigned int *importance)
 {
         struct port *p_ptr;
@@ -1271,16 +1258,11 @@ int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect)
 }
 
 /**
- * tipc_forward2name - forward message sections to port name
+ * tipc_send2name - send message sections to port name
  */
 
-static int tipc_forward2name(u32 ref,
-                             struct tipc_name const *name,
-                             u32 domain,
-                             u32 num_sect,
-                             struct iovec const *msg_sect,
-                             struct tipc_portid const *orig,
-                             unsigned int importance)
+int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain,
+           unsigned int num_sect, struct iovec const *msg_sect)
 {
         struct port *p_ptr;
         struct tipc_msg *msg;
@@ -1294,14 +1276,12 @@ static int tipc_forward2name(u32 ref,
 
         msg = &p_ptr->publ.phdr;
         msg_set_type(msg, TIPC_NAMED_MSG);
-        msg_set_orignode(msg, orig->node);
-        msg_set_origport(msg, orig->ref);
+        msg_set_orignode(msg, tipc_own_addr);
+        msg_set_origport(msg, ref);
         msg_set_hdr_sz(msg, LONG_H_SIZE);
         msg_set_nametype(msg, name->type);
         msg_set_nameinst(msg, name->instance);
         msg_set_lookup_scope(msg, tipc_addr_scope(domain));
-        if (importance <= TIPC_CRITICAL_IMPORTANCE)
-                msg_set_importance(msg,importance);
         destport = tipc_nametbl_translate(name->type, name->instance, &destnode);
         msg_set_destnode(msg, destnode);
         msg_set_destport(msg, destport);
@@ -1325,33 +1305,11 @@ static int tipc_forward2name(u32 ref,
 }
 
 /**
- * tipc_send2name - send message sections to port name
- */
-
-int tipc_send2name(u32 ref,
-                   struct tipc_name const *name,
-                   unsigned int domain,
-                   unsigned int num_sect,
-                   struct iovec const *msg_sect)
-{
-        struct tipc_portid orig;
-
-        orig.ref = ref;
-        orig.node = tipc_own_addr;
-        return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig,
-                                 TIPC_PORT_IMPORTANCE);
-}
-
-/**
- * tipc_forward2port - forward message sections to port identity
+ * tipc_send2port - send message sections to port identity
  */
 
-static int tipc_forward2port(u32 ref,
-                             struct tipc_portid const *dest,
-                             unsigned int num_sect,
-                             struct iovec const *msg_sect,
-                             struct tipc_portid const *orig,
-                             unsigned int importance)
+int tipc_send2port(u32 ref, struct tipc_portid const *dest,
+           unsigned int num_sect, struct iovec const *msg_sect)
 {
         struct port *p_ptr;
         struct tipc_msg *msg;
@@ -1363,13 +1321,11 @@ static int tipc_forward2port(u32 ref,
 
         msg = &p_ptr->publ.phdr;
         msg_set_type(msg, TIPC_DIRECT_MSG);
-        msg_set_orignode(msg, orig->node);
-        msg_set_origport(msg, orig->ref);
+        msg_set_orignode(msg, tipc_own_addr);
+        msg_set_origport(msg, ref);
         msg_set_destnode(msg, dest->node);
         msg_set_destport(msg, dest->ref);
         msg_set_hdr_sz(msg, DIR_MSG_H_SIZE);
-        if (importance <= TIPC_CRITICAL_IMPORTANCE)
-                msg_set_importance(msg, importance);
         p_ptr->sent++;
         if (dest->node == tipc_own_addr)
                 return tipc_port_recv_sections(p_ptr, num_sect, msg_sect);
@@ -1384,31 +1340,11 @@ static int tipc_forward2port(u32 ref,
 }
 
 /**
- * tipc_send2port - send message sections to port identity
+ * tipc_send_buf2port - send message buffer to port identity
  */
 
-int tipc_send2port(u32 ref,
-                   struct tipc_portid const *dest,
-                   unsigned int num_sect,
-                   struct iovec const *msg_sect)
-{
-        struct tipc_portid orig;
-
-        orig.ref = ref;
-        orig.node = tipc_own_addr;
-        return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig,
-                                 TIPC_PORT_IMPORTANCE);
-}
-
-/**
- * tipc_forward_buf2port - forward message buffer to port identity
- */
-static int tipc_forward_buf2port(u32 ref,
-                                 struct tipc_portid const *dest,
-                                 struct sk_buff *buf,
-                                 unsigned int dsz,
-                                 struct tipc_portid const *orig,
-                                 unsigned int importance)
+int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest,
+               struct sk_buff *buf, unsigned int dsz)
 {
         struct port *p_ptr;
         struct tipc_msg *msg;
@@ -1420,13 +1356,11 @@ static int tipc_forward_buf2port(u32 ref,
 
         msg = &p_ptr->publ.phdr;
         msg_set_type(msg, TIPC_DIRECT_MSG);
-        msg_set_orignode(msg, orig->node);
-        msg_set_origport(msg, orig->ref);
+        msg_set_orignode(msg, tipc_own_addr);
+        msg_set_origport(msg, ref);
         msg_set_destnode(msg, dest->node);
         msg_set_destport(msg, dest->ref);
         msg_set_hdr_sz(msg, DIR_MSG_H_SIZE);
-        if (importance <= TIPC_CRITICAL_IMPORTANCE)
-                msg_set_importance(msg, importance);
         msg_set_size(msg, DIR_MSG_H_SIZE + dsz);
         if (skb_cow(buf, DIR_MSG_H_SIZE))
                 return -ENOMEM;
@@ -1445,20 +1379,3 @@ static int tipc_forward_buf2port(u32 ref,
         return -ELINKCONG;
 }
 
-/**
- * tipc_send_buf2port - send message buffer to port identity
- */
-
-int tipc_send_buf2port(u32 ref,
-                       struct tipc_portid const *dest,
-                       struct sk_buff *buf,
-                       unsigned int dsz)
-{
-        struct tipc_portid orig;
-
-        orig.ref = ref;
-        orig.node = tipc_own_addr;
-        return tipc_forward_buf2port(ref, dest, buf, dsz, &orig,
-                                     TIPC_PORT_IMPORTANCE);
-}
-
diff --git a/net/tipc/port.h b/net/tipc/port.h
index 73bbf442b346..3a807fcec2be 100644
--- a/net/tipc/port.h
+++ b/net/tipc/port.h
@@ -37,13 +37,44 @@
 #ifndef _TIPC_PORT_H
 #define _TIPC_PORT_H
 
-#include "core.h"
 #include "ref.h"
 #include "net.h"
 #include "msg.h"
-#include "dbg.h"
 #include "node_subscr.h"
 
+#define TIPC_FLOW_CONTROL_WIN 512
+
+typedef void (*tipc_msg_err_event) (void *usr_handle, u32 portref,
+                struct sk_buff **buf, unsigned char const *data,
+                unsigned int size, int reason,
+                struct tipc_portid const *attmpt_destid);
+
+typedef void (*tipc_named_msg_err_event) (void *usr_handle, u32 portref,
+                struct sk_buff **buf, unsigned char const *data,
+                unsigned int size, int reason,
+                struct tipc_name_seq const *attmpt_dest);
+
+typedef void (*tipc_conn_shutdown_event) (void *usr_handle, u32 portref,
+                struct sk_buff **buf, unsigned char const *data,
+                unsigned int size, int reason);
+
+typedef void (*tipc_msg_event) (void *usr_handle, u32 portref,
+                struct sk_buff **buf, unsigned char const *data,
+                unsigned int size, unsigned int importance,
+                struct tipc_portid const *origin);
+
+typedef void (*tipc_named_msg_event) (void *usr_handle, u32 portref,
+                struct sk_buff **buf, unsigned char const *data,
+                unsigned int size, unsigned int importance,
+                struct tipc_portid const *orig,
+                struct tipc_name_seq const *dest);
+
+typedef void (*tipc_conn_msg_event) (void *usr_handle, u32 portref,
+                struct sk_buff **buf, unsigned char const *data,
+                unsigned int size);
+
+typedef void (*tipc_continue_event) (void *usr_handle, u32 portref);
+
 /**
  * struct user_port - TIPC user port (used with native API)
  * @user_ref: id of user who created user port
@@ -68,6 +99,34 @@ struct user_port {
 };
 
 /**
+ * struct tipc_port - TIPC port info available to socket API
+ * @usr_handle: pointer to additional user-defined information about port
+ * @lock: pointer to spinlock for controlling access to port
+ * @connected: non-zero if port is currently connected to a peer port
+ * @conn_type: TIPC type used when connection was established
+ * @conn_instance: TIPC instance used when connection was established
+ * @conn_unacked: number of unacknowledged messages received from peer port
+ * @published: non-zero if port has one or more associated names
+ * @congested: non-zero if cannot send because of link or port congestion
+ * @max_pkt: maximum packet size "hint" used when building messages sent by port
+ * @ref: unique reference to port in TIPC object registry
+ * @phdr: preformatted message header used when sending messages
+ */
+struct tipc_port {
+        void *usr_handle;
+        spinlock_t *lock;
+        int connected;
+        u32 conn_type;
+        u32 conn_instance;
+        u32 conn_unacked;
+        int published;
+        u32 congested;
+        u32 max_pkt;
+        u32 ref;
+        struct tipc_msg phdr;
+};
+
+/**
  * struct port - TIPC port structure
  * @publ: TIPC port info available to privileged users
  * @port_list: adjacent ports in TIPC's global list of ports
@@ -109,11 +168,76 @@ struct port {
 extern spinlock_t tipc_port_list_lock;
 struct port_list;
 
+/*
+ * TIPC port manipulation routines
+ */
+struct tipc_port *tipc_createport_raw(void *usr_handle,
+                u32 (*dispatcher)(struct tipc_port *, struct sk_buff *),
+                void (*wakeup)(struct tipc_port *), const u32 importance);
+
+int tipc_reject_msg(struct sk_buff *buf, u32 err);
+
+int tipc_send_buf_fast(struct sk_buff *buf, u32 destnode);
+
+void tipc_acknowledge(u32 port_ref, u32 ack);
+
+int tipc_createport(unsigned int tipc_user, void *usr_handle,
+                unsigned int importance, tipc_msg_err_event error_cb,
+                tipc_named_msg_err_event named_error_cb,
+                tipc_conn_shutdown_event conn_error_cb, tipc_msg_event msg_cb,
+                tipc_named_msg_event named_msg_cb,
+                tipc_conn_msg_event conn_msg_cb,
+                tipc_continue_event continue_event_cb, u32 *portref);
+
+int tipc_deleteport(u32 portref);
+
+int tipc_portimportance(u32 portref, unsigned int *importance);
+int tipc_set_portimportance(u32 portref, unsigned int importance);
+
+int tipc_portunreliable(u32 portref, unsigned int *isunreliable);
+int tipc_set_portunreliable(u32 portref, unsigned int isunreliable);
+
+int tipc_portunreturnable(u32 portref, unsigned int *isunreturnable);
+int tipc_set_portunreturnable(u32 portref, unsigned int isunreturnable);
+
+int tipc_publish(u32 portref, unsigned int scope,
+                struct tipc_name_seq const *name_seq);
+int tipc_withdraw(u32 portref, unsigned int scope,
+                struct tipc_name_seq const *name_seq);
+
+int tipc_connect2port(u32 portref, struct tipc_portid const *port);
+
+int tipc_disconnect(u32 portref);
+
+int tipc_shutdown(u32 ref);
+
+
+/*
+ * The following routines require that the port be locked on entry
+ */
+int tipc_disconnect_port(struct tipc_port *tp_ptr);
+
+/*
+ * TIPC messaging routines
+ */
+int tipc_send(u32 portref, unsigned int num_sect, struct iovec const *msg_sect);
+
+int tipc_send2name(u32 portref, struct tipc_name const *name, u32 domain,
+                unsigned int num_sect, struct iovec const *msg_sect);
+
+int tipc_send2port(u32 portref, struct tipc_portid const *dest,
+                unsigned int num_sect, struct iovec const *msg_sect);
+
+int tipc_send_buf2port(u32 portref, struct tipc_portid const *dest,
+                struct sk_buff *buf, unsigned int dsz);
+
+int tipc_multicast(u32 portref, struct tipc_name_seq const *seq,
+                unsigned int section_count, struct iovec const *msg);
+
 int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr,
                               struct iovec const *msg_sect, u32 num_sect,
                               int err);
 struct sk_buff *tipc_port_get_ports(void);
-struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space);
 void tipc_port_recv_proto_msg(struct sk_buff *buf);
 void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp);
 void tipc_port_reinit(void);
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index e9f0d5004483..cd0bb77f2673 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -49,10 +49,9 @@
 
 #include <linux/tipc.h>
 #include <linux/tipc_config.h>
-#include <net/tipc/tipc_msg.h>
-#include <net/tipc/tipc_port.h>
 
 #include "core.h"
+#include "port.h"
 
 #define SS_LISTENING    -1      /* socket is listening */
 #define SS_READY        -2      /* socket is connectionless */
@@ -404,7 +403,8 @@ static int get_name(struct socket *sock, struct sockaddr *uaddr,
                 addr->addr.id.ref = tsock->peer_name.ref;
                 addr->addr.id.node = tsock->peer_name.node;
         } else {
-                tipc_ownidentity(tsock->p->ref, &addr->addr.id);
+                addr->addr.id.ref = tsock->p->ref;
+                addr->addr.id.node = tipc_own_addr;
         }
 
         *uaddr_len = sizeof(*addr);
@@ -597,7 +597,6 @@ static int send_msg(struct kiocb *iocb, struct socket *sock,
                                 break;
                         res = tipc_multicast(tport->ref,
                                              &dest->addr.nameseq,
-                                             0,
                                              m->msg_iovlen,
                                              m->msg_iov);
                 }
diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c
index 33313961d010..23f43d03980c 100644
--- a/net/tipc/subscr.c
+++ b/net/tipc/subscr.c
@@ -35,10 +35,8 @@
  */
 
 #include "core.h"
-#include "dbg.h"
 #include "name_table.h"
-#include "port.h"
-#include "ref.h"
+#include "user_reg.h"
 #include "subscr.h"
 
 /**
@@ -544,14 +542,14 @@ static void subscr_named_msg_event(void *usr_handle,
 int tipc_subscr_start(void)
 {
         struct tipc_name_seq seq = {TIPC_TOP_SRV, TIPC_TOP_SRV, TIPC_TOP_SRV};
-        int res = -1;
+        int res;
 
         memset(&topsrv, 0, sizeof (topsrv));
         spin_lock_init(&topsrv.lock);
         INIT_LIST_HEAD(&topsrv.subscriber_list);
 
         spin_lock_bh(&topsrv.lock);
-        res = tipc_attach(&topsrv.user_ref, NULL, NULL);
+        res = tipc_attach(&topsrv.user_ref);
         if (res) {
                 spin_unlock_bh(&topsrv.lock);
                 return res;
diff --git a/net/tipc/user_reg.c b/net/tipc/user_reg.c
index 506928803162..2e2702e2049c 100644
--- a/net/tipc/user_reg.c
+++ b/net/tipc/user_reg.c
@@ -50,15 +50,11 @@
 /**
  * struct tipc_user - registered TIPC user info
  * @next: index of next free registry entry (or -1 for an allocated entry)
- * @callback: ptr to routine to call when TIPC mode changes (NULL if none)
- * @usr_handle: user-defined value passed to callback routine
  * @ports: list of user ports owned by the user
  */
 
 struct tipc_user {
         int next;
-        tipc_mode_event callback;
-        void *usr_handle;
         struct list_head ports;
 };
 
@@ -95,41 +91,12 @@ static int reg_init(void)
 }
 
 /**
- * reg_callback - inform TIPC user about current operating mode
- */
-
-static void reg_callback(struct tipc_user *user_ptr)
-{
-        tipc_mode_event cb;
-        void *arg;
-
-        spin_lock_bh(&reg_lock);
-        cb = user_ptr->callback;
-        arg = user_ptr->usr_handle;
-        spin_unlock_bh(&reg_lock);
-
-        if (cb)
-                cb(arg, tipc_mode, tipc_own_addr);
-}
-
-/**
  * tipc_reg_start - activate TIPC user registry
  */
 
 int tipc_reg_start(void)
 {
-        u32 u;
-        int res;
-
-        if ((res = reg_init()))
-                return res;
-
-        for (u = 1; u <= MAX_USERID; u++) {
-                if (users[u].callback)
-                        tipc_k_signal((Handler)reg_callback,
-                                      (unsigned long)&users[u]);
-        }
-        return 0;
+        return reg_init();
 }
 
 /**
@@ -138,15 +105,9 @@ int tipc_reg_start(void)
 
 void tipc_reg_stop(void)
 {
-        int id;
-
         if (!users)
                 return;
 
-        for (id = 1; id <= MAX_USERID; id++) {
-                if (users[id].callback)
-                        reg_callback(&users[id]);
-        }
         kfree(users);
         users = NULL;
 }
@@ -157,12 +118,10 @@ void tipc_reg_stop(void)
  * NOTE: This routine may be called when TIPC is inactive.
  */
 
-int tipc_attach(u32 *userid, tipc_mode_event cb, void *usr_handle)
+int tipc_attach(u32 *userid)
 {
         struct tipc_user *user_ptr;
 
-        if ((tipc_mode == TIPC_NOT_RUNNING) && !cb)
-                return -ENOPROTOOPT;
         if (!users)
                 reg_init();
 
@@ -177,13 +136,9 @@ int tipc_attach(u32 *userid, tipc_mode_event cb, void *usr_handle)
         user_ptr->next = -1;
         spin_unlock_bh(&reg_lock);
 
-        user_ptr->callback = cb;
-        user_ptr->usr_handle = usr_handle;
         INIT_LIST_HEAD(&user_ptr->ports);
         atomic_inc(&tipc_user_count);
 
-        if (cb && (tipc_mode != TIPC_NOT_RUNNING))
-                tipc_k_signal((Handler)reg_callback, (unsigned long)user_ptr);
         return 0;
 }
 
@@ -207,7 +162,6 @@ void tipc_detach(u32 userid)
         }
 
         user_ptr = &users[userid];
-        user_ptr->callback = NULL;
         INIT_LIST_HEAD(&ports_temp);
         list_splice(&user_ptr->ports, &ports_temp);
         user_ptr->next = next_free_user;
diff --git a/net/tipc/user_reg.h b/net/tipc/user_reg.h
index 81dc12e2882f..109eed0d6de3 100644
--- a/net/tipc/user_reg.h
+++ b/net/tipc/user_reg.h
@@ -42,6 +42,9 @@
 int tipc_reg_start(void);
 void tipc_reg_stop(void);
 
+int tipc_attach(unsigned int *userref);
+void tipc_detach(unsigned int userref);
+
 int tipc_reg_add_port(struct user_port *up_ptr);
 int tipc_reg_remove_port(struct user_port *up_ptr);
 
diff --git a/net/tipc/zone.c b/net/tipc/zone.c
index 83f8b5e91fc8..1b61ca8c48ef 100644
--- a/net/tipc/zone.c
+++ b/net/tipc/zone.c
@@ -36,9 +36,6 @@
 
 #include "core.h"
 #include "zone.h"
-#include "net.h"
-#include "addr.h"
-#include "node_subscr.h"
 #include "cluster.h"
 #include "node.h"
 
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 2268e6798124..417d7a6c36cf 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -316,7 +316,8 @@ static void unix_write_space(struct sock *sk)
         if (unix_writable(sk)) {
                 wq = rcu_dereference(sk->sk_wq);
                 if (wq_has_sleeper(wq))
-                        wake_up_interruptible_sync(&wq->wait);
+                        wake_up_interruptible_sync_poll(&wq->wait,
+                                POLLOUT | POLLWRNORM | POLLWRBAND);
                 sk_wake_async(sk, SOCK_WAKE_SPACE, POLL_OUT);
         }
         rcu_read_unlock();
@@ -1736,7 +1737,8 @@ static int unix_dgram_recvmsg(struct kiocb *iocb, struct socket *sock,
                 goto out_unlock;
         }
 
-        wake_up_interruptible_sync(&u->peer_wait);
+        wake_up_interruptible_sync_poll(&u->peer_wait,
+                                        POLLOUT | POLLWRNORM | POLLWRBAND);
 
         if (msg->msg_name)
                 unix_copy_addr(msg, skb->sk);
@@ -2099,13 +2101,12 @@ static unsigned int unix_dgram_poll(struct file *file, struct socket *sock,
         if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
                 mask |= POLLERR;
         if (sk->sk_shutdown & RCV_SHUTDOWN)
-                mask |= POLLRDHUP;
+                mask |= POLLRDHUP | POLLIN | POLLRDNORM;
         if (sk->sk_shutdown == SHUTDOWN_MASK)
                 mask |= POLLHUP;
 
         /* readable? */
-        if (!skb_queue_empty(&sk->sk_receive_queue) ||
-            (sk->sk_shutdown & RCV_SHUTDOWN))
+        if (!skb_queue_empty(&sk->sk_receive_queue))
                 mask |= POLLIN | POLLRDNORM;
 
         /* Connection-based need to check for termination and startup */
@@ -2117,20 +2118,19 @@ static unsigned int unix_dgram_poll(struct file *file, struct socket *sock,
                         return mask;
         }
 
-        /* writable? */
-        writable = unix_writable(sk);
-        if (writable) {
-                other = unix_peer_get(sk);
-                if (other) {
-                        if (unix_peer(other) != sk) {
-                                sock_poll_wait(file, &unix_sk(other)->peer_wait,
-                                          wait);
-                                if (unix_recvq_full(other))
-                                        writable = 0;
-                        }
+        /* No write status requested, avoid expensive OUT tests. */
+        if (wait && !(wait->key & (POLLWRBAND | POLLWRNORM | POLLOUT)))
+                return mask;
 
-                        sock_put(other);
+        writable = unix_writable(sk);
+        other = unix_peer_get(sk);
+        if (other) {
+                if (unix_peer(other) != sk) {
+                        sock_poll_wait(file, &unix_sk(other)->peer_wait, wait);
+                        if (unix_recvq_full(other))
+                                writable = 0;
                 }
+                sock_put(other);
         }
 
         if (writable)
diff --git a/net/wanrouter/Makefile b/net/wanrouter/Makefile
index 9f188ab3dcd0..4da14bc48078 100644
--- a/net/wanrouter/Makefile
+++ b/net/wanrouter/Makefile
@@ -4,4 +4,4 @@
 
 obj-$(CONFIG_WAN_ROUTER) += wanrouter.o
 
-wanrouter-objs :=  wanproc.o wanmain.o
+wanrouter-y :=  wanproc.o wanmain.o
diff --git a/net/wireless/Makefile b/net/wireless/Makefile
index e77e508126fa..55a28ab21db9 100644
--- a/net/wireless/Makefile
+++ b/net/wireless/Makefile
@@ -10,7 +10,7 @@ obj-$(CONFIG_WEXT_SPY) += wext-spy.o
 obj-$(CONFIG_WEXT_PRIV) += wext-priv.o
 
 cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o nl80211.o
-cfg80211-y += mlme.o ibss.o sme.o chan.o ethtool.o
+cfg80211-y += mlme.o ibss.o sme.o chan.o ethtool.o mesh.o
 cfg80211-$(CONFIG_CFG80211_DEBUGFS) += debugfs.o
 cfg80211-$(CONFIG_CFG80211_WEXT) += wext-compat.o wext-sme.o
 cfg80211-$(CONFIG_CFG80211_INTERNAL_REGDB) += regdb.o
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 9c21ebf9780e..79772fcc37bc 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -4,6 +4,8 @@
  * Copyright 2006-2010          Johannes Berg <johannes@sipsolutions.net>
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/if.h>
 #include <linux/module.h>
 #include <linux/err.h>
@@ -216,8 +218,7 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
                             rdev->wiphy.debugfsdir,
                             rdev->wiphy.debugfsdir->d_parent,
                             newname))
-                printk(KERN_ERR "cfg80211: failed to rename debugfs dir to %s!\n",
-                       newname);
+                pr_err("failed to rename debugfs dir to %s!\n", newname);
 
         nl80211_notify_dev_rename(rdev);
 
@@ -331,6 +332,7 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv)
         WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf);
         WARN_ON(ops->add_station && !ops->del_station);
         WARN_ON(ops->add_mpath && !ops->del_mpath);
+        WARN_ON(ops->join_mesh && !ops->leave_mesh);
 
         alloc_size = sizeof(*rdev) + sizeof_priv;
 
@@ -699,8 +701,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
 
                 if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj,
                                       "phy80211")) {
-                        printk(KERN_ERR "wireless: failed to add phy80211 "
-                                "symlink to netdev!\n");
+                        pr_err("failed to add phy80211 symlink to netdev!\n");
                 }
                 wdev->netdev = dev;
                 wdev->sme_state = CFG80211_SME_IDLE;
@@ -752,6 +753,9 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
                         cfg80211_mlme_down(rdev, dev);
                         wdev_unlock(wdev);
                         break;
+                case NL80211_IFTYPE_MESH_POINT:
+                        cfg80211_leave_mesh(rdev, dev);
+                        break;
                 default:
                         break;
                 }
@@ -775,20 +779,27 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
                 }
                 cfg80211_lock_rdev(rdev);
                 mutex_lock(&rdev->devlist_mtx);
-#ifdef CONFIG_CFG80211_WEXT
                 wdev_lock(wdev);
                 switch (wdev->iftype) {
+#ifdef CONFIG_CFG80211_WEXT
                 case NL80211_IFTYPE_ADHOC:
                         cfg80211_ibss_wext_join(rdev, wdev);
                         break;
                 case NL80211_IFTYPE_STATION:
                         cfg80211_mgd_wext_connect(rdev, wdev);
                         break;
+#endif
+                case NL80211_IFTYPE_MESH_POINT:
+                        /* backward compat code ... */
+                        if (wdev->mesh_id_up_len)
+                                __cfg80211_join_mesh(rdev, dev, wdev->ssid,
+                                                     wdev->mesh_id_up_len,
+                                                     &default_mesh_config);
+                        break;
                 default:
                         break;
                 }
                 wdev_unlock(wdev);
-#endif
                 rdev->opencount++;
                 mutex_unlock(&rdev->devlist_mtx);
                 cfg80211_unlock_rdev(rdev);
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 6583cca0e2ee..743203bb61ac 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -285,6 +285,19 @@ void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
 int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
                             struct wireless_dev *wdev);
 
+/* mesh */
+extern const struct mesh_config default_mesh_config;
+int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
+                         struct net_device *dev,
+                         const u8 *mesh_id, u8 mesh_id_len,
+                         const struct mesh_config *conf);
+int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
+                       struct net_device *dev,
+                       const u8 *mesh_id, u8 mesh_id_len,
+                       const struct mesh_config *conf);
+int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
+                        struct net_device *dev);
+
 /* MLME */
 int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
                          struct net_device *dev,
@@ -341,9 +354,9 @@ void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
                           struct net_device *dev,
-                          struct ieee80211_channel *chan,
+                          struct ieee80211_channel *chan, bool offchan,
                           enum nl80211_channel_type channel_type,
-                          bool channel_type_valid,
+                          bool channel_type_valid, unsigned int wait,
                           const u8 *buf, size_t len, u64 *cookie);
 
 /* SME */
diff --git a/net/wireless/lib80211.c b/net/wireless/lib80211.c
index 97d411f74507..3268fac5ab22 100644
--- a/net/wireless/lib80211.c
+++ b/net/wireless/lib80211.c
@@ -13,6 +13,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/ctype.h>
 #include <linux/ieee80211.h>
@@ -224,8 +226,8 @@ int lib80211_unregister_crypto_ops(struct lib80211_crypto_ops *ops)
         return -EINVAL;
 
       found:
-        printk(KERN_DEBUG "lib80211_crypt: unregistered algorithm "
-               "'%s'\n", ops->name);
+        printk(KERN_DEBUG "lib80211_crypt: unregistered algorithm '%s'\n",
+               ops->name);
         list_del(&alg->list);
         spin_unlock_irqrestore(&lib80211_crypto_lock, flags);
         kfree(alg);
@@ -270,7 +272,7 @@ static struct lib80211_crypto_ops lib80211_crypt_null = {
 
 static int __init lib80211_init(void)
 {
-        printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION "\n");
+        pr_info(DRV_DESCRIPTION "\n");
         return lib80211_register_crypto_ops(&lib80211_crypt_null);
 }
 
diff --git a/net/wireless/lib80211_crypt_tkip.c b/net/wireless/lib80211_crypt_tkip.c
index 0fe40510e2cb..7ea4f2b0770e 100644
--- a/net/wireless/lib80211_crypt_tkip.c
+++ b/net/wireless/lib80211_crypt_tkip.c
@@ -10,6 +10,8 @@
  * more details.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/err.h>
 #include <linux/module.h>
 #include <linux/init.h>
@@ -99,8 +101,7 @@ static void *lib80211_tkip_init(int key_idx)
         priv->tx_tfm_arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0,
                                                 CRYPTO_ALG_ASYNC);
         if (IS_ERR(priv->tx_tfm_arc4)) {
-                printk(KERN_DEBUG "lib80211_crypt_tkip: could not allocate "
-                       "crypto API arc4\n");
+                printk(KERN_DEBUG pr_fmt("could not allocate crypto API arc4\n"));
                 priv->tx_tfm_arc4 = NULL;
                 goto fail;
         }
@@ -108,8 +109,7 @@ static void *lib80211_tkip_init(int key_idx)
         priv->tx_tfm_michael = crypto_alloc_hash("michael_mic", 0,
                                                  CRYPTO_ALG_ASYNC);
         if (IS_ERR(priv->tx_tfm_michael)) {
-                printk(KERN_DEBUG "lib80211_crypt_tkip: could not allocate "
-                       "crypto API michael_mic\n");
+                printk(KERN_DEBUG pr_fmt("could not allocate crypto API michael_mic\n"));
                 priv->tx_tfm_michael = NULL;
                 goto fail;
         }
@@ -117,8 +117,7 @@ static void *lib80211_tkip_init(int key_idx)
         priv->rx_tfm_arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0,
                                                 CRYPTO_ALG_ASYNC);
         if (IS_ERR(priv->rx_tfm_arc4)) {
-                printk(KERN_DEBUG "lib80211_crypt_tkip: could not allocate "
-                       "crypto API arc4\n");
+                printk(KERN_DEBUG pr_fmt("could not allocate crypto API arc4\n"));
                 priv->rx_tfm_arc4 = NULL;
                 goto fail;
         }
@@ -126,8 +125,7 @@ static void *lib80211_tkip_init(int key_idx)
         priv->rx_tfm_michael = crypto_alloc_hash("michael_mic", 0,
                                                  CRYPTO_ALG_ASYNC);
         if (IS_ERR(priv->rx_tfm_michael)) {
-                printk(KERN_DEBUG "lib80211_crypt_tkip: could not allocate "
-                       "crypto API michael_mic\n");
+                printk(KERN_DEBUG pr_fmt("could not allocate crypto API michael_mic\n"));
                 priv->rx_tfm_michael = NULL;
                 goto fail;
         }
@@ -536,7 +534,7 @@ static int michael_mic(struct crypto_hash *tfm_michael, u8 * key, u8 * hdr,
         struct scatterlist sg[2];
 
         if (tfm_michael == NULL) {
-                printk(KERN_WARNING "michael_mic: tfm_michael == NULL\n");
+                pr_warn("%s(): tfm_michael == NULL\n", __func__);
                 return -1;
         }
         sg_init_table(sg, 2);
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
new file mode 100644
index 000000000000..e0b9747fe50a
--- /dev/null
+++ b/net/wireless/mesh.c
@@ -0,0 +1,140 @@
+#include <linux/ieee80211.h>
+#include <net/cfg80211.h>
+#include "core.h"
+
+/* Default values, timeouts in ms */
+#define MESH_TTL                31
+#define MESH_DEFAULT_ELEMENT_TTL 31
+#define MESH_MAX_RETR           3
+#define MESH_RET_T              100
+#define MESH_CONF_T             100
+#define MESH_HOLD_T             100
+
+#define MESH_PATH_TIMEOUT       5000
+
+/*
+ * Minimum interval between two consecutive PREQs originated by the same
+ * interface
+ */
+#define MESH_PREQ_MIN_INT       10
+#define MESH_DIAM_TRAVERSAL_TIME 50
+
+/*
+ * A path will be refreshed if it is used PATH_REFRESH_TIME milliseconds
+ * before timing out.  This way it will remain ACTIVE and no data frames
+ * will be unnecessarily held in the pending queue.
+ */
+#define MESH_PATH_REFRESH_TIME                  1000
+#define MESH_MIN_DISCOVERY_TIMEOUT (2 * MESH_DIAM_TRAVERSAL_TIME)
+
+/* Default maximum number of established plinks per interface */
+#define MESH_MAX_ESTAB_PLINKS   32
+
+#define MESH_MAX_PREQ_RETRIES   4
+
+
+const struct mesh_config default_mesh_config = {
+        .dot11MeshRetryTimeout = MESH_RET_T,
+        .dot11MeshConfirmTimeout = MESH_CONF_T,
+        .dot11MeshHoldingTimeout = MESH_HOLD_T,
+        .dot11MeshMaxRetries = MESH_MAX_RETR,
+        .dot11MeshTTL = MESH_TTL,
+        .element_ttl = MESH_DEFAULT_ELEMENT_TTL,
+        .auto_open_plinks = true,
+        .dot11MeshMaxPeerLinks = MESH_MAX_ESTAB_PLINKS,
+        .dot11MeshHWMPactivePathTimeout = MESH_PATH_TIMEOUT,
+        .dot11MeshHWMPpreqMinInterval = MESH_PREQ_MIN_INT,
+        .dot11MeshHWMPnetDiameterTraversalTime = MESH_DIAM_TRAVERSAL_TIME,
+        .dot11MeshHWMPmaxPREQretries = MESH_MAX_PREQ_RETRIES,
+        .path_refresh_time = MESH_PATH_REFRESH_TIME,
+        .min_discovery_timeout = MESH_MIN_DISCOVERY_TIMEOUT,
+};
+
+
+int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
+                         struct net_device *dev,
+                         const u8 *mesh_id, u8 mesh_id_len,
+                         const struct mesh_config *conf)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct mesh_setup setup = {
+                .mesh_id = mesh_id,
+                .mesh_id_len = mesh_id_len,
+        };
+        int err;
+
+        BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != IEEE80211_MAX_MESH_ID_LEN);
+
+        ASSERT_WDEV_LOCK(wdev);
+
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
+                return -EOPNOTSUPP;
+
+        if (wdev->mesh_id_len)
+                return -EALREADY;
+
+        if (!mesh_id_len)
+                return -EINVAL;
+
+        if (!rdev->ops->join_mesh)
+                return -EOPNOTSUPP;
+
+        err = rdev->ops->join_mesh(&rdev->wiphy, dev, conf, &setup);
+        if (!err) {
+                memcpy(wdev->ssid, mesh_id, mesh_id_len);
+                wdev->mesh_id_len = mesh_id_len;
+        }
+
+        return err;
+}
+
+int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
+                       struct net_device *dev,
+                       const u8 *mesh_id, u8 mesh_id_len,
+                       const struct mesh_config *conf)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        int err;
+
+        wdev_lock(wdev);
+        err = __cfg80211_join_mesh(rdev, dev, mesh_id, mesh_id_len, conf);
+        wdev_unlock(wdev);
+
+        return err;
+}
+
+static int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
+                                 struct net_device *dev)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        int err;
+
+        ASSERT_WDEV_LOCK(wdev);
+
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
+                return -EOPNOTSUPP;
+
+        if (!rdev->ops->leave_mesh)
+                return -EOPNOTSUPP;
+
+        if (!wdev->mesh_id_len)
+                return -ENOTCONN;
+
+        err = rdev->ops->leave_mesh(&rdev->wiphy, dev);
+        if (!err)
+                wdev->mesh_id_len = 0;
+        return err;
+}
+
+int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
+                        struct net_device *dev)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        int err;
+
+        wdev_lock(wdev);
+        err = __cfg80211_leave_mesh(rdev, dev);
+        wdev_unlock(wdev);
+
+        return err;
+}
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 26838d903b9a..d7680f2a4c5b 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -864,9 +864,9 @@ void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev)
 
 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
                           struct net_device *dev,
-                          struct ieee80211_channel *chan,
+                          struct ieee80211_channel *chan, bool offchan,
                           enum nl80211_channel_type channel_type,
-                          bool channel_type_valid,
+                          bool channel_type_valid, unsigned int wait,
                           const u8 *buf, size_t len, u64 *cookie)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
@@ -946,8 +946,9 @@ int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
                 return -EINVAL;
 
         /* Transmit the Action frame as requested by user space */
-        return rdev->ops->mgmt_tx(&rdev->wiphy, dev, chan, channel_type,
-                                  channel_type_valid, buf, len, cookie);
+        return rdev->ops->mgmt_tx(&rdev->wiphy, dev, chan, offchan,
+                                  channel_type, channel_type_valid,
+                                  wait, buf, len, cookie);
 }
 
 bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf,
@@ -1028,3 +1029,15 @@ void cfg80211_cqm_rssi_notify(struct net_device *dev,
         nl80211_send_cqm_rssi_notify(rdev, dev, rssi_event, gfp);
 }
 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
+
+void cfg80211_cqm_pktloss_notify(struct net_device *dev,
+                                 const u8 *peer, u32 num_packets, gfp_t gfp)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct wiphy *wiphy = wdev->wiphy;
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+        /* Indicate roaming trigger event to user space */
+        nl80211_send_cqm_pktloss_notify(rdev, dev, peer, num_packets, gfp);
+}
+EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 4e78e3f26798..c3f80e565365 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -121,6 +121,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
                                            .len = NL80211_MAX_SUPP_RATES },
+        [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 
         [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
 
@@ -163,10 +164,13 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
-
         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
+        [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
+        [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
+        [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
+        [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 };
 
 /* policy for the key attributes */
@@ -526,7 +530,6 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
                     dev->wiphy.rts_threshold);
         NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
                     dev->wiphy.coverage_class);
-
         NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
                    dev->wiphy.max_scan_ssids);
         NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
@@ -545,6 +548,16 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
         if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
 
+        if (dev->ops->get_antenna) {
+                u32 tx_ant = 0, rx_ant = 0;
+                int res;
+                res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
+                if (!res) {
+                        NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
+                        NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
+                }
+        }
+
         nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
         if (!nl_modes)
                 goto nla_put_failure;
@@ -649,19 +662,21 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
         CMD(add_beacon, NEW_BEACON);
         CMD(add_station, NEW_STATION);
         CMD(add_mpath, NEW_MPATH);
-        CMD(set_mesh_params, SET_MESH_PARAMS);
+        CMD(update_mesh_params, SET_MESH_PARAMS);
         CMD(change_bss, SET_BSS);
         CMD(auth, AUTHENTICATE);
         CMD(assoc, ASSOCIATE);
         CMD(deauth, DEAUTHENTICATE);
         CMD(disassoc, DISASSOCIATE);
         CMD(join_ibss, JOIN_IBSS);
+        CMD(join_mesh, JOIN_MESH);
         CMD(set_pmksa, SET_PMKSA);
         CMD(del_pmksa, DEL_PMKSA);
         CMD(flush_pmksa, FLUSH_PMKSA);
         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
         CMD(mgmt_tx, FRAME);
+        CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
         if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
                 i++;
                 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
@@ -683,6 +698,10 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 
         nla_nest_end(msg, nl_cmds);
 
+        /* for now at least assume all drivers have it */
+        if (dev->ops->mgmt_tx)
+                NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
+
         if (mgmt_stypes) {
                 u16 stypes;
                 struct nlattr *nl_ftypes, *nl_ifs;
@@ -1024,6 +1043,22 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
                         goto bad_res;
         }
 
+        if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
+            info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
+                u32 tx_ant, rx_ant;
+                if (!rdev->ops->set_antenna) {
+                        result = -EOPNOTSUPP;
+                        goto bad_res;
+                }
+
+                tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
+                rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
+
+                result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
+                if (result)
+                        goto bad_res;
+        }
+
         changed = 0;
 
         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
@@ -1291,11 +1326,21 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
         }
 
         if (info->attrs[NL80211_ATTR_MESH_ID]) {
+                struct wireless_dev *wdev = dev->ieee80211_ptr;
+
                 if (ntype != NL80211_IFTYPE_MESH_POINT)
                         return -EINVAL;
-                params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
-                params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
-                change = true;
+                if (netif_running(dev))
+                        return -EBUSY;
+
+                wdev_lock(wdev);
+                BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
+                             IEEE80211_MAX_MESH_ID_LEN);
+                wdev->mesh_id_up_len =
+                        nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
+                memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
+                       wdev->mesh_id_up_len);
+                wdev_unlock(wdev);
         }
 
         if (info->attrs[NL80211_ATTR_4ADDR]) {
@@ -1335,6 +1380,7 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
 {
         struct cfg80211_registered_device *rdev = info->user_ptr[0];
         struct vif_params params;
+        struct net_device *dev;
         int err;
         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
         u32 flags;
@@ -1354,12 +1400,6 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
             !(rdev->wiphy.interface_modes & (1 << type)))
                 return -EOPNOTSUPP;
 
-        if (type == NL80211_IFTYPE_MESH_POINT &&
-            info->attrs[NL80211_ATTR_MESH_ID]) {
-                params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
-                params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
-        }
-
         if (info->attrs[NL80211_ATTR_4ADDR]) {
                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
@@ -1370,11 +1410,27 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
                                   &flags);
-        err = rdev->ops->add_virtual_intf(&rdev->wiphy,
+        dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
                 type, err ? NULL : &flags, &params);
+        if (IS_ERR(dev))
+                return PTR_ERR(dev);
 
-        return err;
+        if (type == NL80211_IFTYPE_MESH_POINT &&
+            info->attrs[NL80211_ATTR_MESH_ID]) {
+                struct wireless_dev *wdev = dev->ieee80211_ptr;
+
+                wdev_lock(wdev);
+                BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
+                             IEEE80211_MAX_MESH_ID_LEN);
+                wdev->mesh_id_up_len =
+                        nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
+                memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
+                       wdev->mesh_id_up_len);
+                wdev_unlock(wdev);
+        }
+
+        return 0;
 }
 
 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
@@ -1841,6 +1897,9 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
         if (sinfo->filled & STATION_INFO_SIGNAL)
                 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
                            sinfo->signal);
+        if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
+                NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
+                           sinfo->signal_avg);
         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
                 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
                 if (!txrate)
@@ -2404,6 +2463,7 @@ static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
         params.use_short_preamble = -1;
         params.use_short_slot_time = -1;
         params.ap_isolate = -1;
+        params.ht_opmode = -1;
 
         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
                 params.use_cts_prot =
@@ -2422,6 +2482,9 @@ static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
         }
         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
+        if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
+                params.ht_opmode =
+                        nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
 
         if (!rdev->ops->change_bss)
                 return -EOPNOTSUPP;
@@ -2507,21 +2570,32 @@ static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
 }
 
 static int nl80211_get_mesh_params(struct sk_buff *skb,
-        struct genl_info *info)
+                                   struct genl_info *info)
 {
         struct cfg80211_registered_device *rdev = info->user_ptr[0];
-        struct mesh_config cur_params;
-        int err;
         struct net_device *dev = info->user_ptr[1];
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct mesh_config cur_params;
+        int err = 0;
         void *hdr;
         struct nlattr *pinfoattr;
         struct sk_buff *msg;
 
+        if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
+                return -EOPNOTSUPP;
+
         if (!rdev->ops->get_mesh_params)
                 return -EOPNOTSUPP;
 
-        /* Get the mesh params */
-        err = rdev->ops->get_mesh_params(&rdev->wiphy, dev, &cur_params);
+        wdev_lock(wdev);
+        /* If not connected, get default parameters */
+        if (!wdev->mesh_id_len)
+                memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
+        else
+                err = rdev->ops->get_mesh_params(&rdev->wiphy, dev,
+                                                 &cur_params);
+        wdev_unlock(wdev);
+
         if (err)
                 return err;
 
@@ -2549,6 +2623,8 @@ static int nl80211_get_mesh_params(struct sk_buff *skb,
                         cur_params.dot11MeshMaxRetries);
         NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
                         cur_params.dot11MeshTTL);
+        NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
+                        cur_params.element_ttl);
         NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
                         cur_params.auto_open_plinks);
         NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
@@ -2575,14 +2651,6 @@ static int nl80211_get_mesh_params(struct sk_buff *skb,
         return -ENOBUFS;
 }
 
-#define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
-do {\
-        if (table[attr_num]) {\
-                cfg.param = nla_fn(table[attr_num]); \
-                mask |= (1 << (attr_num - 1)); \
-        } \
-} while (0);\
-
 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
@@ -2590,6 +2658,7 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A
         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
+        [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
 
         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
@@ -2600,31 +2669,34 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A
         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
 };
 
-static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
+static int nl80211_parse_mesh_params(struct genl_info *info,
+                                     struct mesh_config *cfg,
+                                     u32 *mask_out)
 {
-        u32 mask;
-        struct cfg80211_registered_device *rdev = info->user_ptr[0];
-        struct net_device *dev = info->user_ptr[1];
-        struct mesh_config cfg;
         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
-        struct nlattr *parent_attr;
+        u32 mask = 0;
+
+#define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
+do {\
+        if (table[attr_num]) {\
+                cfg->param = nla_fn(table[attr_num]); \
+                mask |= (1 << (attr_num - 1)); \
+        } \
+} while (0);\
+
 
-        parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
-        if (!parent_attr)
+        if (!info->attrs[NL80211_ATTR_MESH_PARAMS])
                 return -EINVAL;
         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
-                        parent_attr, nl80211_meshconf_params_policy))
+                             info->attrs[NL80211_ATTR_MESH_PARAMS],
+                             nl80211_meshconf_params_policy))
                 return -EINVAL;
 
-        if (!rdev->ops->set_mesh_params)
-                return -EOPNOTSUPP;
-
         /* This makes sure that there aren't more than 32 mesh config
          * parameters (otherwise our bitfield scheme would not work.) */
         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
 
         /* Fill in the params struct */
-        mask = 0;
         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
                         mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
@@ -2637,6 +2709,8 @@ static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
                         mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
                         mask, NL80211_MESHCONF_TTL, nla_get_u8);
+        FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
+                        mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
                         mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
@@ -2662,11 +2736,45 @@ static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
                         NL80211_MESHCONF_HWMP_ROOTMODE,
                         nla_get_u8);
 
-        /* Apply changes */
-        return rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask);
-}
+        if (mask_out)
+                *mask_out = mask;
+        return 0;
 
 #undef FILL_IN_MESH_PARAM_IF_SET
+}
+
+static int nl80211_update_mesh_params(struct sk_buff *skb,
+                                      struct genl_info *info)
+{
+        struct cfg80211_registered_device *rdev = info->user_ptr[0];
+        struct net_device *dev = info->user_ptr[1];
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct mesh_config cfg;
+        u32 mask;
+        int err;
+
+        if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
+                return -EOPNOTSUPP;
+
+        if (!rdev->ops->update_mesh_params)
+                return -EOPNOTSUPP;
+
+        err = nl80211_parse_mesh_params(info, &cfg, &mask);
+        if (err)
+                return err;
+
+        wdev_lock(wdev);
+        if (!wdev->mesh_id_len)
+                err = -ENOLINK;
+
+        if (!err)
+                err = rdev->ops->update_mesh_params(&rdev->wiphy, dev,
+                                                    mask, &cfg);
+
+        wdev_unlock(wdev);
+
+        return err;
+}
 
 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
 {
@@ -3569,6 +3677,34 @@ static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
                                       local_state_change);
 }
 
+static bool
+nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
+                         int mcast_rate[IEEE80211_NUM_BANDS],
+                         int rateval)
+{
+        struct wiphy *wiphy = &rdev->wiphy;
+        bool found = false;
+        int band, i;
+
+        for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+                struct ieee80211_supported_band *sband;
+
+                sband = wiphy->bands[band];
+                if (!sband)
+                        continue;
+
+                for (i = 0; i < sband->n_bitrates; i++) {
+                        if (sband->bitrates[i].bitrate == rateval) {
+                                mcast_rate[band] = i + 1;
+                                found = true;
+                                break;
+                        }
+                }
+        }
+
+        return found;
+}
+
 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
 {
         struct cfg80211_registered_device *rdev = info->user_ptr[0];
@@ -3653,6 +3789,11 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
                 }
         }
 
+        if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
+            !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
+                        nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
+                return -EINVAL;
+
         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
                 connkeys = nl80211_parse_connkeys(rdev,
                                         info->attrs[NL80211_ATTR_KEYS]);
@@ -4180,6 +4321,8 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
         void *hdr;
         u64 cookie;
         struct sk_buff *msg;
+        unsigned int wait = 0;
+        bool offchan;
 
         if (!info->attrs[NL80211_ATTR_FRAME] ||
             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
@@ -4196,6 +4339,12 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
                 return -EOPNOTSUPP;
 
+        if (info->attrs[NL80211_ATTR_DURATION]) {
+                if (!rdev->ops->mgmt_tx_cancel_wait)
+                        return -EINVAL;
+                wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
+        }
+
         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
                 channel_type = nla_get_u32(
                         info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
@@ -4207,6 +4356,8 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
                 channel_type_valid = true;
         }
 
+        offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
+
         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
         chan = rdev_freq_to_chan(rdev, freq, channel_type);
         if (chan == NULL)
@@ -4223,8 +4374,8 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
                 err = PTR_ERR(hdr);
                 goto free_msg;
         }
-        err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, channel_type,
-                                    channel_type_valid,
+        err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
+                                    channel_type_valid, wait,
                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
                                     &cookie);
@@ -4243,6 +4394,31 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
         return err;
 }
 
+static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
+{
+        struct cfg80211_registered_device *rdev = info->user_ptr[0];
+        struct net_device *dev = info->user_ptr[1];
+        u64 cookie;
+
+        if (!info->attrs[NL80211_ATTR_COOKIE])
+                return -EINVAL;
+
+        if (!rdev->ops->mgmt_tx_cancel_wait)
+                return -EOPNOTSUPP;
+
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+                return -EOPNOTSUPP;
+
+        cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
+
+        return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
+}
+
 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
 {
         struct cfg80211_registered_device *rdev = info->user_ptr[0];
@@ -4381,6 +4557,41 @@ out:
         return err;
 }
 
+static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
+{
+        struct cfg80211_registered_device *rdev = info->user_ptr[0];
+        struct net_device *dev = info->user_ptr[1];
+        struct mesh_config cfg;
+        int err;
+
+        /* start with default */
+        memcpy(&cfg, &default_mesh_config, sizeof(cfg));
+
+        if (info->attrs[NL80211_ATTR_MESH_PARAMS]) {
+                /* and parse parameters if given */
+                err = nl80211_parse_mesh_params(info, &cfg, NULL);
+                if (err)
+                        return err;
+        }
+
+        if (!info->attrs[NL80211_ATTR_MESH_ID] ||
+            !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
+                return -EINVAL;
+
+        return cfg80211_join_mesh(rdev, dev,
+                                  nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
+                                  nla_len(info->attrs[NL80211_ATTR_MESH_ID]),
+                                  &cfg);
+}
+
+static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
+{
+        struct cfg80211_registered_device *rdev = info->user_ptr[0];
+        struct net_device *dev = info->user_ptr[1];
+
+        return cfg80211_leave_mesh(rdev, dev);
+}
+
 #define NL80211_FLAG_NEED_WIPHY         0x01
 #define NL80211_FLAG_NEED_NETDEV        0x02
 #define NL80211_FLAG_NEED_RTNL          0x04
@@ -4645,10 +4856,10 @@ static struct genl_ops nl80211_ops[] = {
         },
         {
                 .cmd = NL80211_CMD_SET_MESH_PARAMS,
-                .doit = nl80211_set_mesh_params,
+                .doit = nl80211_update_mesh_params,
                 .policy = nl80211_policy,
                 .flags = GENL_ADMIN_PERM,
-                .internal_flags = NL80211_FLAG_NEED_NETDEV |
+                .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
                                   NL80211_FLAG_NEED_RTNL,
         },
         {
@@ -4816,6 +5027,14 @@ static struct genl_ops nl80211_ops[] = {
                                   NL80211_FLAG_NEED_RTNL,
         },
         {
+                .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
+                .doit = nl80211_tx_mgmt_cancel_wait,
+                .policy = nl80211_policy,
+                .flags = GENL_ADMIN_PERM,
+                .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+                                  NL80211_FLAG_NEED_RTNL,
+        },
+        {
                 .cmd = NL80211_CMD_SET_POWER_SAVE,
                 .doit = nl80211_set_power_save,
                 .policy = nl80211_policy,
@@ -4855,6 +5074,22 @@ static struct genl_ops nl80211_ops[] = {
                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
                                   NL80211_FLAG_NEED_RTNL,
         },
+        {
+                .cmd = NL80211_CMD_JOIN_MESH,
+                .doit = nl80211_join_mesh,
+                .policy = nl80211_policy,
+                .flags = GENL_ADMIN_PERM,
+                .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+                                  NL80211_FLAG_NEED_RTNL,
+        },
+        {
+                .cmd = NL80211_CMD_LEAVE_MESH,
+                .doit = nl80211_leave_mesh,
+                .policy = nl80211_policy,
+                .flags = GENL_ADMIN_PERM,
+                .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+                                  NL80211_FLAG_NEED_RTNL,
+        },
 };
 
 static struct genl_multicast_group nl80211_mlme_mcgrp = {
@@ -5651,6 +5886,51 @@ nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
         nlmsg_free(msg);
 }
 
+void
+nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
+                                struct net_device *netdev, const u8 *peer,
+                                u32 num_packets, gfp_t gfp)
+{
+        struct sk_buff *msg;
+        struct nlattr *pinfoattr;
+        void *hdr;
+
+        msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
+        if (!msg)
+                return;
+
+        hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
+        if (!hdr) {
+                nlmsg_free(msg);
+                return;
+        }
+
+        NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
+        NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
+        NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
+
+        pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
+        if (!pinfoattr)
+                goto nla_put_failure;
+
+        NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
+
+        nla_nest_end(msg, pinfoattr);
+
+        if (genlmsg_end(msg, hdr) < 0) {
+                nlmsg_free(msg);
+                return;
+        }
+
+        genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
+                                nl80211_mlme_mcgrp.id, gfp);
+        return;
+
+ nla_put_failure:
+        genlmsg_cancel(msg, hdr);
+        nlmsg_free(msg);
+}
+
 static int nl80211_netlink_notify(struct notifier_block * nb,
                                   unsigned long state,
                                   void *_notify)
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 30d2f939150d..16c2f7190768 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -87,5 +87,9 @@ nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
                              struct net_device *netdev,
                              enum nl80211_cqm_rssi_threshold_event rssi_event,
                              gfp_t gfp);
+void
+nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
+                                struct net_device *netdev, const u8 *peer,
+                                u32 num_packets, gfp_t gfp);
 
 #endif /* __NET_WIRELESS_NL80211_H */
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 4b9f8912526c..5ed615f94e0c 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -32,6 +32,9 @@
  * rely on some SHA1 checksum of the regdomain for example.
  *
  */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/list.h>
@@ -48,7 +51,7 @@
 #ifdef CONFIG_CFG80211_REG_DEBUG
 #define REG_DBG_PRINT(format, args...) \
         do { \
-                printk(KERN_DEBUG format , ## args); \
+                printk(KERN_DEBUG pr_fmt(format), ##args);      \
         } while (0)
 #else
 #define REG_DBG_PRINT(args...)
@@ -96,6 +99,9 @@ struct reg_beacon {
         struct ieee80211_channel chan;
 };
 
+static void reg_todo(struct work_struct *work);
+static DECLARE_WORK(reg_work, reg_todo);
+
 /* We keep a static world regulatory domain in case of the absence of CRDA */
 static const struct ieee80211_regdomain world_regdom = {
         .n_reg_rules = 5,
@@ -367,11 +373,10 @@ static int call_crda(const char *alpha2)
         };
 
         if (!is_world_regdom((char *) alpha2))
-                printk(KERN_INFO "cfg80211: Calling CRDA for country: %c%c\n",
+                pr_info("Calling CRDA for country: %c%c\n",
                         alpha2[0], alpha2[1]);
         else
-                printk(KERN_INFO "cfg80211: Calling CRDA to update world "
-                        "regulatory domain\n");
+                pr_info("Calling CRDA to update world regulatory domain\n");
 
         /* query internal regulatory database (if it exists) */
         reg_regdb_query(alpha2);
@@ -711,6 +716,60 @@ int freq_reg_info(struct wiphy *wiphy,
 }
 EXPORT_SYMBOL(freq_reg_info);
 
+#ifdef CONFIG_CFG80211_REG_DEBUG
+static const char *reg_initiator_name(enum nl80211_reg_initiator initiator)
+{
+        switch (initiator) {
+        case NL80211_REGDOM_SET_BY_CORE:
+                return "Set by core";
+        case NL80211_REGDOM_SET_BY_USER:
+                return "Set by user";
+        case NL80211_REGDOM_SET_BY_DRIVER:
+                return "Set by driver";
+        case NL80211_REGDOM_SET_BY_COUNTRY_IE:
+                return "Set by country IE";
+        default:
+                WARN_ON(1);
+                return "Set by bug";
+        }
+}
+
+static void chan_reg_rule_print_dbg(struct ieee80211_channel *chan,
+                                    u32 desired_bw_khz,
+                                    const struct ieee80211_reg_rule *reg_rule)
+{
+        const struct ieee80211_power_rule *power_rule;
+        const struct ieee80211_freq_range *freq_range;
+        char max_antenna_gain[32];
+
+        power_rule = &reg_rule->power_rule;
+        freq_range = &reg_rule->freq_range;
+
+        if (!power_rule->max_antenna_gain)
+                snprintf(max_antenna_gain, 32, "N/A");
+        else
+                snprintf(max_antenna_gain, 32, "%d", power_rule->max_antenna_gain);
+
+        REG_DBG_PRINT("Updating information on frequency %d MHz "
+                      "for %d a MHz width channel with regulatory rule:\n",
+                      chan->center_freq,
+                      KHZ_TO_MHZ(desired_bw_khz));
+
+        REG_DBG_PRINT("%d KHz - %d KHz @  KHz), (%s mBi, %d mBm)\n",
+                      freq_range->start_freq_khz,
+                      freq_range->end_freq_khz,
+                      max_antenna_gain,
+                      power_rule->max_eirp);
+}
+#else
+static void chan_reg_rule_print_dbg(struct ieee80211_channel *chan,
+                                    u32 desired_bw_khz,
+                                    const struct ieee80211_reg_rule *reg_rule)
+{
+        return;
+}
+#endif
+
 /*
  * Note that right now we assume the desired channel bandwidth
  * is always 20 MHz for each individual channel (HT40 uses 20 MHz
@@ -720,7 +779,9 @@ EXPORT_SYMBOL(freq_reg_info);
  * on the wiphy with the target_bw specified. Then we can simply use
  * that below for the desired_bw_khz below.
  */
-static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
+static void handle_channel(struct wiphy *wiphy,
+                           enum nl80211_reg_initiator initiator,
+                           enum ieee80211_band band,
                            unsigned int chan_idx)
 {
         int r;
@@ -748,8 +809,27 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
                           desired_bw_khz,
                           &reg_rule);
 
-        if (r)
+        if (r) {
+                /*
+                 * We will disable all channels that do not match our
+                 * recieved regulatory rule unless the hint is coming
+                 * from a Country IE and the Country IE had no information
+                 * about a band. The IEEE 802.11 spec allows for an AP
+                 * to send only a subset of the regulatory rules allowed,
+                 * so an AP in the US that only supports 2.4 GHz may only send
+                 * a country IE with information for the 2.4 GHz band
+                 * while 5 GHz is still supported.
+                 */
+                if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE &&
+                    r == -ERANGE)
+                        return;
+
+                REG_DBG_PRINT("Disabling freq %d MHz\n", chan->center_freq);
+                chan->flags = IEEE80211_CHAN_DISABLED;
                 return;
+        }
+
+        chan_reg_rule_print_dbg(chan, desired_bw_khz, reg_rule);
 
         power_rule = &reg_rule->power_rule;
         freq_range = &reg_rule->freq_range;
@@ -784,7 +864,9 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
                 chan->max_power = (int) MBM_TO_DBM(power_rule->max_eirp);
 }
 
-static void handle_band(struct wiphy *wiphy, enum ieee80211_band band)
+static void handle_band(struct wiphy *wiphy,
+                        enum ieee80211_band band,
+                        enum nl80211_reg_initiator initiator)
 {
         unsigned int i;
         struct ieee80211_supported_band *sband;
@@ -793,24 +875,42 @@ static void handle_band(struct wiphy *wiphy, enum ieee80211_band band)
         sband = wiphy->bands[band];
 
         for (i = 0; i < sband->n_channels; i++)
-                handle_channel(wiphy, band, i);
+                handle_channel(wiphy, initiator, band, i);
 }
 
 static bool ignore_reg_update(struct wiphy *wiphy,
                               enum nl80211_reg_initiator initiator)
 {
-        if (!last_request)
+        if (!last_request) {
+                REG_DBG_PRINT("Ignoring regulatory request %s since "
+                              "last_request is not set\n",
+                              reg_initiator_name(initiator));
                 return true;
+        }
+
         if (initiator == NL80211_REGDOM_SET_BY_CORE &&
-            wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY)
+            wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) {
+                REG_DBG_PRINT("Ignoring regulatory request %s "
+                              "since the driver uses its own custom "
+                              "regulatory domain ",
+                              reg_initiator_name(initiator));
                 return true;
+        }
+
         /*
          * wiphy->regd will be set once the device has its own
          * desired regulatory domain set
          */
         if (wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY && !wiphy->regd &&
-            !is_world_regdom(last_request->alpha2))
+            initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
+            !is_world_regdom(last_request->alpha2)) {
+                REG_DBG_PRINT("Ignoring regulatory request %s "
+                              "since the driver requires its own regulaotry "
+                              "domain to be set first",
+                              reg_initiator_name(initiator));
                 return true;
+        }
+
         return false;
 }
 
@@ -1030,7 +1130,7 @@ void wiphy_update_regulatory(struct wiphy *wiphy,
                 goto out;
         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
                 if (wiphy->bands[band])
-                        handle_band(wiphy, band);
+                        handle_band(wiphy, band, initiator);
         }
 out:
         reg_process_beacons(wiphy);
@@ -1066,10 +1166,17 @@ static void handle_channel_custom(struct wiphy *wiphy,
                                regd);
 
         if (r) {
+                REG_DBG_PRINT("Disabling freq %d MHz as custom "
+                              "regd has no rule that fits a %d MHz "
+                              "wide channel\n",
+                              chan->center_freq,
+                              KHZ_TO_MHZ(desired_bw_khz));
                 chan->flags = IEEE80211_CHAN_DISABLED;
                 return;
         }
 
+        chan_reg_rule_print_dbg(chan, desired_bw_khz, reg_rule);
+
         power_rule = &reg_rule->power_rule;
         freq_range = &reg_rule->freq_range;
 
@@ -1215,6 +1322,21 @@ static int ignore_request(struct wiphy *wiphy,
         return -EINVAL;
 }
 
+static void reg_set_request_processed(void)
+{
+        bool need_more_processing = false;
+
+        last_request->processed = true;
+
+        spin_lock(&reg_requests_lock);
+        if (!list_empty(&reg_requests_list))
+                need_more_processing = true;
+        spin_unlock(&reg_requests_lock);
+
+        if (need_more_processing)
+                schedule_work(&reg_work);
+}
+
 /**
  * __regulatory_hint - hint to the wireless core a regulatory domain
  * @wiphy: if the hint comes from country information from an AP, this
@@ -1290,8 +1412,10 @@ new_request:
                  * have applied the requested regulatory domain before we just
                  * inform userspace we have processed the request
                  */
-                if (r == -EALREADY)
+                if (r == -EALREADY) {
                         nl80211_send_reg_change_event(last_request);
+                        reg_set_request_processed();
+                }
                 return r;
         }
 
@@ -1307,16 +1431,13 @@ static void reg_process_hint(struct regulatory_request *reg_request)
 
         BUG_ON(!reg_request->alpha2);
 
-        mutex_lock(&cfg80211_mutex);
-        mutex_lock(&reg_mutex);
-
         if (wiphy_idx_valid(reg_request->wiphy_idx))
                 wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx);
 
         if (reg_request->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
             !wiphy) {
                 kfree(reg_request);
-                goto out;
+                return;
         }
 
         r = __regulatory_hint(wiphy, reg_request);
@@ -1324,28 +1445,46 @@ static void reg_process_hint(struct regulatory_request *reg_request)
         if (r == -EALREADY && wiphy &&
             wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY)
                 wiphy_update_regulatory(wiphy, initiator);
-out:
-        mutex_unlock(&reg_mutex);
-        mutex_unlock(&cfg80211_mutex);
 }
 
-/* Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_* */
+/*
+ * Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_*
+ * Regulatory hints come on a first come first serve basis and we
+ * must process each one atomically.
+ */
 static void reg_process_pending_hints(void)
-        {
+{
         struct regulatory_request *reg_request;
 
+        mutex_lock(&cfg80211_mutex);
+        mutex_lock(&reg_mutex);
+
+        /* When last_request->processed becomes true this will be rescheduled */
+        if (last_request && !last_request->processed) {
+                REG_DBG_PRINT("Pending regulatory request, waiting "
+                              "for it to be processed...");
+                goto out;
+        }
+
         spin_lock(&reg_requests_lock);
-        while (!list_empty(&reg_requests_list)) {
-                reg_request = list_first_entry(&reg_requests_list,
-                                               struct regulatory_request,
-                                               list);
-                list_del_init(&reg_request->list);
 
+        if (list_empty(&reg_requests_list)) {
                 spin_unlock(&reg_requests_lock);
-                reg_process_hint(reg_request);
-                spin_lock(&reg_requests_lock);
+                goto out;
         }
+
+        reg_request = list_first_entry(&reg_requests_list,
+                                       struct regulatory_request,
+                                       list);
+        list_del_init(&reg_request->list);
+
         spin_unlock(&reg_requests_lock);
+
+        reg_process_hint(reg_request);
+
+out:
+        mutex_unlock(&reg_mutex);
+        mutex_unlock(&cfg80211_mutex);
 }
 
 /* Processes beacon hints -- this has nothing to do with country IEs */
@@ -1392,8 +1531,6 @@ static void reg_todo(struct work_struct *work)
         reg_process_pending_beacon_hints();
 }
 
-static DECLARE_WORK(reg_work, reg_todo);
-
 static void queue_regulatory_request(struct regulatory_request *request)
 {
         if (isalpha(request->alpha2[0]))
@@ -1428,12 +1565,7 @@ static int regulatory_hint_core(const char *alpha2)
         request->alpha2[1] = alpha2[1];
         request->initiator = NL80211_REGDOM_SET_BY_CORE;
 
-        /*
-         * This ensures last_request is populated once modules
-         * come swinging in and calling regulatory hints and
-         * wiphy_apply_custom_regulatory().
-         */
-        reg_process_hint(request);
+        queue_regulatory_request(request);
 
         return 0;
 }
@@ -1559,7 +1691,7 @@ static void restore_alpha2(char *alpha2, bool reset_user)
         if (is_user_regdom_saved()) {
                 /* Unless we're asked to ignore it and reset it */
                 if (reset_user) {
-                        REG_DBG_PRINT("cfg80211: Restoring regulatory settings "
+                        REG_DBG_PRINT("Restoring regulatory settings "
                                "including user preference\n");
                         user_alpha2[0] = '9';
                         user_alpha2[1] = '7';
@@ -1570,7 +1702,7 @@ static void restore_alpha2(char *alpha2, bool reset_user)
                          * back as they were for a full restore.
                          */
                         if (!is_world_regdom(ieee80211_regdom)) {
-                                REG_DBG_PRINT("cfg80211: Keeping preference on "
+                                REG_DBG_PRINT("Keeping preference on "
                                        "module parameter ieee80211_regdom: %c%c\n",
                                        ieee80211_regdom[0],
                                        ieee80211_regdom[1]);
@@ -1578,7 +1710,7 @@ static void restore_alpha2(char *alpha2, bool reset_user)
                                 alpha2[1] = ieee80211_regdom[1];
                         }
                 } else {
-                        REG_DBG_PRINT("cfg80211: Restoring regulatory settings "
+                        REG_DBG_PRINT("Restoring regulatory settings "
                                "while preserving user preference for: %c%c\n",
                                user_alpha2[0],
                                user_alpha2[1]);
@@ -1586,14 +1718,14 @@ static void restore_alpha2(char *alpha2, bool reset_user)
                         alpha2[1] = user_alpha2[1];
                 }
         } else if (!is_world_regdom(ieee80211_regdom)) {
-                REG_DBG_PRINT("cfg80211: Keeping preference on "
+                REG_DBG_PRINT("Keeping preference on "
                        "module parameter ieee80211_regdom: %c%c\n",
                        ieee80211_regdom[0],
                        ieee80211_regdom[1]);
                 alpha2[0] = ieee80211_regdom[0];
                 alpha2[1] = ieee80211_regdom[1];
         } else
-                REG_DBG_PRINT("cfg80211: Restoring regulatory settings\n");
+                REG_DBG_PRINT("Restoring regulatory settings\n");
 }
 
 /*
@@ -1661,7 +1793,7 @@ static void restore_regulatory_settings(bool reset_user)
 
 void regulatory_hint_disconnect(void)
 {
-        REG_DBG_PRINT("cfg80211: All devices are disconnected, going to "
+        REG_DBG_PRINT("All devices are disconnected, going to "
                       "restore regulatory settings\n");
         restore_regulatory_settings(false);
 }
@@ -1691,7 +1823,7 @@ int regulatory_hint_found_beacon(struct wiphy *wiphy,
         if (!reg_beacon)
                 return -ENOMEM;
 
-        REG_DBG_PRINT("cfg80211: Found new beacon on "
+        REG_DBG_PRINT("Found new beacon on "
                       "frequency: %d MHz (Ch %d) on %s\n",
                       beacon_chan->center_freq,
                       ieee80211_frequency_to_channel(beacon_chan->center_freq),
@@ -1721,8 +1853,7 @@ static void print_rd_rules(const struct ieee80211_regdomain *rd)
         const struct ieee80211_freq_range *freq_range = NULL;
         const struct ieee80211_power_rule *power_rule = NULL;
 
-        printk(KERN_INFO "    (start_freq - end_freq @ bandwidth), "
-                "(max_antenna_gain, max_eirp)\n");
+        pr_info("    (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)\n");
 
         for (i = 0; i < rd->n_reg_rules; i++) {
                 reg_rule = &rd->reg_rules[i];
@@ -1734,16 +1865,14 @@ static void print_rd_rules(const struct ieee80211_regdomain *rd)
                  * in certain regions
                  */
                 if (power_rule->max_antenna_gain)
-                        printk(KERN_INFO "    (%d KHz - %d KHz @ %d KHz), "
-                                "(%d mBi, %d mBm)\n",
+                        pr_info("    (%d KHz - %d KHz @ %d KHz), (%d mBi, %d mBm)\n",
                                 freq_range->start_freq_khz,
                                 freq_range->end_freq_khz,
                                 freq_range->max_bandwidth_khz,
                                 power_rule->max_antenna_gain,
                                 power_rule->max_eirp);
                 else
-                        printk(KERN_INFO "    (%d KHz - %d KHz @ %d KHz), "
-                                "(N/A, %d mBm)\n",
+                        pr_info("    (%d KHz - %d KHz @ %d KHz), (N/A, %d mBm)\n",
                                 freq_range->start_freq_khz,
                                 freq_range->end_freq_khz,
                                 freq_range->max_bandwidth_khz,
@@ -1762,27 +1891,20 @@ static void print_regdomain(const struct ieee80211_regdomain *rd)
                         rdev = cfg80211_rdev_by_wiphy_idx(
                                 last_request->wiphy_idx);
                         if (rdev) {
-                                printk(KERN_INFO "cfg80211: Current regulatory "
-                                        "domain updated by AP to: %c%c\n",
+                                pr_info("Current regulatory domain updated by AP to: %c%c\n",
                                         rdev->country_ie_alpha2[0],
                                         rdev->country_ie_alpha2[1]);
                         } else
-                                printk(KERN_INFO "cfg80211: Current regulatory "
-                                        "domain intersected:\n");
+                                pr_info("Current regulatory domain intersected:\n");
                 } else
-                        printk(KERN_INFO "cfg80211: Current regulatory "
-                                "domain intersected:\n");
+                        pr_info("Current regulatory domain intersected:\n");
         } else if (is_world_regdom(rd->alpha2))
-                printk(KERN_INFO "cfg80211: World regulatory "
-                        "domain updated:\n");
+                pr_info("World regulatory domain updated:\n");
         else {
                 if (is_unknown_alpha2(rd->alpha2))
-                        printk(KERN_INFO "cfg80211: Regulatory domain "
-                                "changed to driver built-in settings "
-                                "(unknown country)\n");
+                        pr_info("Regulatory domain changed to driver built-in settings (unknown country)\n");
                 else
-                        printk(KERN_INFO "cfg80211: Regulatory domain "
-                                "changed to country: %c%c\n",
+                        pr_info("Regulatory domain changed to country: %c%c\n",
                                 rd->alpha2[0], rd->alpha2[1]);
         }
         print_rd_rules(rd);
@@ -1790,8 +1912,7 @@ static void print_regdomain(const struct ieee80211_regdomain *rd)
 
 static void print_regdomain_info(const struct ieee80211_regdomain *rd)
 {
-        printk(KERN_INFO "cfg80211: Regulatory domain: %c%c\n",
-                rd->alpha2[0], rd->alpha2[1]);
+        pr_info("Regulatory domain: %c%c\n", rd->alpha2[0], rd->alpha2[1]);
         print_rd_rules(rd);
 }
 
@@ -1842,8 +1963,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
                 return -EINVAL;
 
         if (!is_valid_rd(rd)) {
-                printk(KERN_ERR "cfg80211: Invalid "
-                        "regulatory domain detected:\n");
+                pr_err("Invalid regulatory domain detected:\n");
                 print_regdomain_info(rd);
                 return -EINVAL;
         }
@@ -1959,6 +2079,8 @@ int set_regdom(const struct ieee80211_regdomain *rd)
 
         nl80211_send_reg_change_event(last_request);
 
+        reg_set_request_processed();
+
         mutex_unlock(&reg_mutex);
 
         return r;
@@ -2015,8 +2137,7 @@ int __init regulatory_init(void)
                  * early boot for call_usermodehelper(). For now treat these
                  * errors as non-fatal.
                  */
-                printk(KERN_ERR "cfg80211: kobject_uevent_env() was unable "
-                        "to call CRDA during init");
+                pr_err("kobject_uevent_env() was unable to call CRDA during init\n");
 #ifdef CONFIG_CFG80211_REG_DEBUG
                 /* We want to find out exactly why when debugging */
                 WARN_ON(err);
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 76120aeda57d..4de624ca4c63 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -502,7 +502,7 @@ int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
                         skb_orphan(skb);
 
                 if (pskb_expand_head(skb, head_need, 0, GFP_ATOMIC)) {
-                        printk(KERN_ERR "failed to reallocate Tx buffer\n");
+                        pr_err("failed to reallocate Tx buffer\n");
                         return -ENOMEM;
                 }
                 skb->truesize += head_need;
@@ -685,20 +685,17 @@ void cfg80211_upload_connect_keys(struct wireless_dev *wdev)
                         continue;
                 if (rdev->ops->add_key(wdev->wiphy, dev, i, false, NULL,
                                         &wdev->connect_keys->params[i])) {
-                        printk(KERN_ERR "%s: failed to set key %d\n",
-                                dev->name, i);
+                        netdev_err(dev, "failed to set key %d\n", i);
                         continue;
                 }
                 if (wdev->connect_keys->def == i)
                         if (rdev->ops->set_default_key(wdev->wiphy, dev, i)) {
-                                printk(KERN_ERR "%s: failed to set defkey %d\n",
-                                        dev->name, i);
+                                netdev_err(dev, "failed to set defkey %d\n", i);
                                 continue;
                         }
                 if (wdev->connect_keys->defmgmt == i)
                         if (rdev->ops->set_default_mgmt_key(wdev->wiphy, dev, i))
-                                printk(KERN_ERR "%s: failed to set mgtdef %d\n",
-                                        dev->name, i);
+                                netdev_err(dev, "failed to set mgtdef %d\n", i);
         }
 
         kfree(wdev->connect_keys);
@@ -795,6 +792,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
 
         if (ntype != otype) {
                 dev->ieee80211_ptr->use_4addr = false;
+                dev->ieee80211_ptr->mesh_id_up_len = 0;
 
                 switch (otype) {
                 case NL80211_IFTYPE_ADHOC:
diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c
index dc675a3daa3d..fdbc23c10d8c 100644
--- a/net/wireless/wext-core.c
+++ b/net/wireless/wext-core.c
@@ -467,8 +467,8 @@ void wireless_send_event(struct net_device *	dev,
                  * The best the driver could do is to log an error message.
                  * We will do it ourselves instead...
                  */
-                printk(KERN_ERR "%s (WE) : Invalid/Unknown Wireless Event (0x%04X)\n",
-                       dev->name, cmd);
+                netdev_err(dev, "(WE) : Invalid/Unknown Wireless Event (0x%04X)\n",
+                           cmd);
                 return;
         }
 
@@ -476,11 +476,13 @@ void wireless_send_event(struct net_device *	dev,
         if (descr->header_type == IW_HEADER_TYPE_POINT) {
                 /* Check if number of token fits within bounds */
                 if (wrqu->data.length > descr->max_tokens) {
-                        printk(KERN_ERR "%s (WE) : Wireless Event too big (%d)\n", dev->name, wrqu->data.length);
+                        netdev_err(dev, "(WE) : Wireless Event too big (%d)\n",
+                                   wrqu->data.length);
                         return;
                 }
                 if (wrqu->data.length < descr->min_tokens) {
-                        printk(KERN_ERR "%s (WE) : Wireless Event too small (%d)\n", dev->name, wrqu->data.length);
+                        netdev_err(dev, "(WE) : Wireless Event too small (%d)\n",
+                                   wrqu->data.length);
                         return;
                 }
                 /* Calculate extra_len - extra is NULL for restricted events */
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index f7af98dff409..ad96ee90fe27 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -1357,11 +1357,11 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
         void __user *argp = (void __user *)arg;
         int rc;
 
-        lock_kernel();
         switch (cmd) {
                 case TIOCOUTQ: {
-                        int amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
+                        int amount;
 
+                        amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
                         if (amount < 0)
                                 amount = 0;
                         rc = put_user(amount, (unsigned int __user *)argp);
@@ -1375,8 +1375,10 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                          * These two are safe on a single CPU system as
                          * only user tasks fiddle here
                          */
+                        lock_sock(sk);
                         if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
                                 amount = skb->len;
+                        release_sock(sk);
                         rc = put_user(amount, (unsigned int __user *)argp);
                         break;
                 }
@@ -1422,9 +1424,11 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                         rc = x25_subscr_ioctl(cmd, argp);
                         break;
                 case SIOCX25GFACILITIES: {
-                        struct x25_facilities fac = x25->facilities;
-                        rc = copy_to_user(argp, &fac,
-                                          sizeof(fac)) ? -EFAULT : 0;
+                        lock_sock(sk);
+                        rc = copy_to_user(argp, &x25->facilities,
+                                                sizeof(x25->facilities))
+                                                ? -EFAULT : 0;
+                        release_sock(sk);
                         break;
                 }
 
@@ -1435,18 +1439,19 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                                            sizeof(facilities)))
                                 break;
                         rc = -EINVAL;
+                        lock_sock(sk);
                         if (sk->sk_state != TCP_LISTEN &&
                             sk->sk_state != TCP_CLOSE)
-                                break;
+                                goto out_fac_release;
                         if (facilities.pacsize_in < X25_PS16 ||
                             facilities.pacsize_in > X25_PS4096)
-                                break;
+                                goto out_fac_release;
                         if (facilities.pacsize_out < X25_PS16 ||
                             facilities.pacsize_out > X25_PS4096)
-                                break;
+                                goto out_fac_release;
                         if (facilities.winsize_in < 1 ||
                             facilities.winsize_in > 127)
-                                break;
+                                goto out_fac_release;
                         if (facilities.throughput) {
                                 int out = facilities.throughput & 0xf0;
                                 int in  = facilities.throughput & 0x0f;
@@ -1454,24 +1459,28 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                                         facilities.throughput |=
                                                 X25_DEFAULT_THROUGHPUT << 4;
                                 else if (out < 0x30 || out > 0xD0)
-                                        break;
+                                        goto out_fac_release;
                                 if (!in)
                                         facilities.throughput |=
                                                 X25_DEFAULT_THROUGHPUT;
                                 else if (in < 0x03 || in > 0x0D)
-                                        break;
+                                        goto out_fac_release;
                         }
                         if (facilities.reverse &&
                                 (facilities.reverse & 0x81) != 0x81)
-                                break;
+                                goto out_fac_release;
                         x25->facilities = facilities;
                         rc = 0;
+out_fac_release:
+                        release_sock(sk);
                         break;
                 }
 
                 case SIOCX25GDTEFACILITIES: {
+                        lock_sock(sk);
                         rc = copy_to_user(argp, &x25->dte_facilities,
                                                 sizeof(x25->dte_facilities));
+                        release_sock(sk);
                         if (rc)
                                 rc = -EFAULT;
                         break;
@@ -1483,26 +1492,31 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                         if (copy_from_user(&dtefacs, argp, sizeof(dtefacs)))
                                 break;
                         rc = -EINVAL;
+                        lock_sock(sk);
                         if (sk->sk_state != TCP_LISTEN &&
                                         sk->sk_state != TCP_CLOSE)
-                                break;
+                                goto out_dtefac_release;
                         if (dtefacs.calling_len > X25_MAX_AE_LEN)
-                                break;
+                                goto out_dtefac_release;
                         if (dtefacs.calling_ae == NULL)
-                                break;
+                                goto out_dtefac_release;
                         if (dtefacs.called_len > X25_MAX_AE_LEN)
-                                break;
+                                goto out_dtefac_release;
                         if (dtefacs.called_ae == NULL)
-                                break;
+                                goto out_dtefac_release;
                         x25->dte_facilities = dtefacs;
                         rc = 0;
+out_dtefac_release:
+                        release_sock(sk);
                         break;
                 }
 
                 case SIOCX25GCALLUSERDATA: {
-                        struct x25_calluserdata cud = x25->calluserdata;
-                        rc = copy_to_user(argp, &cud,
-                                          sizeof(cud)) ? -EFAULT : 0;
+                        lock_sock(sk);
+                        rc = copy_to_user(argp, &x25->calluserdata,
+                                        sizeof(x25->calluserdata))
+                                        ? -EFAULT : 0;
+                        release_sock(sk);
                         break;
                 }
 
@@ -1516,16 +1530,19 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                         rc = -EINVAL;
                         if (calluserdata.cudlength > X25_MAX_CUD_LEN)
                                 break;
+                        lock_sock(sk);
                         x25->calluserdata = calluserdata;
+                        release_sock(sk);
                         rc = 0;
                         break;
                 }
 
                 case SIOCX25GCAUSEDIAG: {
-                        struct x25_causediag causediag;
-                        causediag = x25->causediag;
-                        rc = copy_to_user(argp, &causediag,
-                                          sizeof(causediag)) ? -EFAULT : 0;
+                        lock_sock(sk);
+                        rc = copy_to_user(argp, &x25->causediag,
+                                        sizeof(x25->causediag))
+                                        ? -EFAULT : 0;
+                        release_sock(sk);
                         break;
                 }
 
@@ -1534,7 +1551,9 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                         rc = -EFAULT;
                         if (copy_from_user(&causediag, argp, sizeof(causediag)))
                                 break;
+                        lock_sock(sk);
                         x25->causediag = causediag;
+                        release_sock(sk);
                         rc = 0;
                         break;
 
@@ -1543,31 +1562,37 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 case SIOCX25SCUDMATCHLEN: {
                         struct x25_subaddr sub_addr;
                         rc = -EINVAL;
+                        lock_sock(sk);
                         if(sk->sk_state != TCP_CLOSE)
-                                break;
+                                goto out_cud_release;
                         rc = -EFAULT;
                         if (copy_from_user(&sub_addr, argp,
                                         sizeof(sub_addr)))
-                                break;
+                                goto out_cud_release;
                         rc = -EINVAL;
                         if(sub_addr.cudmatchlength > X25_MAX_CUD_LEN)
-                                break;
+                                goto out_cud_release;
                         x25->cudmatchlength = sub_addr.cudmatchlength;
                         rc = 0;
+out_cud_release:
+                        release_sock(sk);
                         break;
                 }
 
                 case SIOCX25CALLACCPTAPPRV: {
                         rc = -EINVAL;
+                        lock_kernel();
                         if (sk->sk_state != TCP_CLOSE)
                                 break;
                         clear_bit(X25_ACCPT_APPRV_FLAG, &x25->flags);
+                        unlock_kernel();
                         rc = 0;
                         break;
                 }
 
                 case SIOCX25SENDCALLACCPT:  {
                         rc = -EINVAL;
+                        lock_kernel();
                         if (sk->sk_state != TCP_ESTABLISHED)
                                 break;
                         /* must call accptapprv above */
@@ -1575,6 +1600,7 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                                 break;
                         x25_write_internal(sk, X25_CALL_ACCEPTED);
                         x25->state = X25_STATE_3;
+                        unlock_kernel();
                         rc = 0;
                         break;
                 }
@@ -1583,7 +1609,6 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                         rc = -ENOIOCTLCMD;
                         break;
         }
-        unlock_kernel();
 
         return rc;
 }
@@ -1619,16 +1644,20 @@ static int compat_x25_subscr_ioctl(unsigned int cmd,
         dev_put(dev);
 
         if (cmd == SIOCX25GSUBSCRIP) {
+                read_lock_bh(&x25_neigh_list_lock);
                 x25_subscr.extended = nb->extended;
                 x25_subscr.global_facil_mask = nb->global_facil_mask;
+                read_unlock_bh(&x25_neigh_list_lock);
                 rc = copy_to_user(x25_subscr32, &x25_subscr,
                                 sizeof(*x25_subscr32)) ? -EFAULT : 0;
         } else {
                 rc = -EINVAL;
                 if (x25_subscr.extended == 0 || x25_subscr.extended == 1) {
                         rc = 0;
+                        write_lock_bh(&x25_neigh_list_lock);
                         nb->extended = x25_subscr.extended;
                         nb->global_facil_mask = x25_subscr.global_facil_mask;
+                        write_unlock_bh(&x25_neigh_list_lock);
                 }
         }
         x25_neigh_put(nb);
@@ -1654,19 +1683,15 @@ static int compat_x25_ioctl(struct socket *sock, unsigned int cmd,
                 break;
         case SIOCGSTAMP:
                 rc = -EINVAL;
-                lock_kernel();
                 if (sk)
                         rc = compat_sock_get_timestamp(sk,
                                         (struct timeval __user*)argp);
-                unlock_kernel();
                 break;
         case SIOCGSTAMPNS:
                 rc = -EINVAL;
-                lock_kernel();
                 if (sk)
                         rc = compat_sock_get_timestampns(sk,
                                         (struct timespec __user*)argp);
-                unlock_kernel();
                 break;
         case SIOCGIFADDR:
         case SIOCSIFADDR:
@@ -1685,22 +1710,16 @@ static int compat_x25_ioctl(struct socket *sock, unsigned int cmd,
                 rc = -EPERM;
                 if (!capable(CAP_NET_ADMIN))
                         break;
-                lock_kernel();
                 rc = x25_route_ioctl(cmd, argp);
-                unlock_kernel();
                 break;
         case SIOCX25GSUBSCRIP:
-                lock_kernel();
                 rc = compat_x25_subscr_ioctl(cmd, argp);
-                unlock_kernel();
                 break;
         case SIOCX25SSUBSCRIP:
                 rc = -EPERM;
                 if (!capable(CAP_NET_ADMIN))
                         break;
-                lock_kernel();
                 rc = compat_x25_subscr_ioctl(cmd, argp);
-                unlock_kernel();
                 break;
         case SIOCX25GFACILITIES:
         case SIOCX25SFACILITIES:
diff --git a/net/x25/x25_link.c b/net/x25/x25_link.c
index b25c6463c3e9..4cbc942f762a 100644
--- a/net/x25/x25_link.c
+++ b/net/x25/x25_link.c
@@ -31,8 +31,8 @@
 #include <linux/init.h>
 #include <net/x25.h>
 
-static LIST_HEAD(x25_neigh_list);
-static DEFINE_RWLOCK(x25_neigh_list_lock);
+LIST_HEAD(x25_neigh_list);
+DEFINE_RWLOCK(x25_neigh_list_lock);
 
 static void x25_t20timer_expiry(unsigned long);
 
@@ -360,16 +360,20 @@ int x25_subscr_ioctl(unsigned int cmd, void __user *arg)
         dev_put(dev);
 
         if (cmd == SIOCX25GSUBSCRIP) {
+                read_lock_bh(&x25_neigh_list_lock);
                 x25_subscr.extended          = nb->extended;
                 x25_subscr.global_facil_mask = nb->global_facil_mask;
+                read_unlock_bh(&x25_neigh_list_lock);
                 rc = copy_to_user(arg, &x25_subscr,
                                   sizeof(x25_subscr)) ? -EFAULT : 0;
         } else {
                 rc = -EINVAL;
                 if (!(x25_subscr.extended && x25_subscr.extended != 1)) {
                         rc = 0;
+                        write_lock_bh(&x25_neigh_list_lock);
                         nb->extended         = x25_subscr.extended;
                         nb->global_facil_mask = x25_subscr.global_facil_mask;
+                        write_unlock_bh(&x25_neigh_list_lock);
                 }
         }
         x25_neigh_put(nb);
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 044e77898512..8b3ef404c794 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1433,7 +1433,7 @@ static struct dst_entry *xfrm_bundle_create(struct xfrm_policy *policy,
                 }
 
                 xdst->route = dst;
-                memcpy(&dst1->metrics, &dst->metrics, sizeof(dst->metrics));
+                dst_copy_metrics(dst1, dst);
 
                 if (xfrm[i]->props.mode != XFRM_MODE_TRANSPORT) {
                         family = xfrm[i]->props.family;
@@ -2271,7 +2271,7 @@ static void xfrm_init_pmtu(struct dst_entry *dst)
                 if (pmtu > route_mtu_cached)
                         pmtu = route_mtu_cached;
 
-                dst->metrics[RTAX_MTU-1] = pmtu;
+                dst_metric_set(dst, RTAX_MTU, pmtu);
         } while ((dst = dst->next));
 }
 
@@ -2349,7 +2349,7 @@ static int xfrm_bundle_ok(struct xfrm_policy *pol, struct xfrm_dst *first,
                 mtu = xfrm_state_mtu(dst->xfrm, mtu);
                 if (mtu > last->route_mtu_cached)
                         mtu = last->route_mtu_cached;
-                dst->metrics[RTAX_MTU-1] = mtu;
+                dst_metric_set(dst, RTAX_MTU, mtu);
 
                 if (last == first)
                         break;
@@ -2361,6 +2361,16 @@ static int xfrm_bundle_ok(struct xfrm_policy *pol, struct xfrm_dst *first,
         return 1;
 }
 
+static unsigned int xfrm_default_advmss(const struct dst_entry *dst)
+{
+        return dst_metric_advmss(dst->path);
+}
+
+static unsigned int xfrm_default_mtu(const struct dst_entry *dst)
+{
+        return dst_mtu(dst->path);
+}
+
 int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo)
 {
         struct net *net;
@@ -2378,6 +2388,10 @@ int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo)
                         dst_ops->kmem_cachep = xfrm_dst_cache;
                 if (likely(dst_ops->check == NULL))
                         dst_ops->check = xfrm_dst_check;
+                if (likely(dst_ops->default_advmss == NULL))
+                        dst_ops->default_advmss = xfrm_default_advmss;
+                if (likely(dst_ops->default_mtu == NULL))
+                        dst_ops->default_mtu = xfrm_default_mtu;
                 if (likely(dst_ops->negative_advice == NULL))
                         dst_ops->negative_advice = xfrm_negative_advice;
                 if (likely(dst_ops->link_failure == NULL))
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 8bae6b22c846..8eb889510916 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -148,7 +148,8 @@ static int verify_newsa_info(struct xfrm_usersa_info *p,
                      !attrs[XFRMA_ALG_AUTH_TRUNC]) ||
                     attrs[XFRMA_ALG_AEAD]       ||
                     attrs[XFRMA_ALG_CRYPT]      ||
-                    attrs[XFRMA_ALG_COMP])
+                    attrs[XFRMA_ALG_COMP]       ||
+                    attrs[XFRMA_TFCPAD])
                         goto out;
                 break;
 
@@ -165,6 +166,9 @@ static int verify_newsa_info(struct xfrm_usersa_info *p,
                      attrs[XFRMA_ALG_CRYPT]) &&
                     attrs[XFRMA_ALG_AEAD])
                         goto out;
+                if (attrs[XFRMA_TFCPAD] &&
+                    p->mode != XFRM_MODE_TUNNEL)
+                        goto out;
                 break;
 
         case IPPROTO_COMP:
@@ -172,7 +176,8 @@ static int verify_newsa_info(struct xfrm_usersa_info *p,
                     attrs[XFRMA_ALG_AEAD]       ||
                     attrs[XFRMA_ALG_AUTH]       ||
                     attrs[XFRMA_ALG_AUTH_TRUNC] ||
-                    attrs[XFRMA_ALG_CRYPT])
+                    attrs[XFRMA_ALG_CRYPT]      ||
+                    attrs[XFRMA_TFCPAD])
                         goto out;
                 break;
 
@@ -186,6 +191,7 @@ static int verify_newsa_info(struct xfrm_usersa_info *p,
                     attrs[XFRMA_ALG_CRYPT]      ||
                     attrs[XFRMA_ENCAP]          ||
                     attrs[XFRMA_SEC_CTX]        ||
+                    attrs[XFRMA_TFCPAD]         ||
                     !attrs[XFRMA_COADDR])
                         goto out;
                 break;
@@ -439,6 +445,9 @@ static struct xfrm_state *xfrm_state_construct(struct net *net,
                         goto error;
         }
 
+        if (attrs[XFRMA_TFCPAD])
+                x->tfcpad = nla_get_u32(attrs[XFRMA_TFCPAD]);
+
         if (attrs[XFRMA_COADDR]) {
                 x->coaddr = kmemdup(nla_data(attrs[XFRMA_COADDR]),
                                     sizeof(*x->coaddr), GFP_KERNEL);
@@ -688,6 +697,9 @@ static int copy_to_user_state_extra(struct xfrm_state *x,
         if (x->encap)
                 NLA_PUT(skb, XFRMA_ENCAP, sizeof(*x->encap), x->encap);
 
+        if (x->tfcpad)
+                NLA_PUT_U32(skb, XFRMA_TFCPAD, x->tfcpad);
+
         if (xfrm_mark_put(skb, &x->mark))
                 goto nla_put_failure;
 
@@ -2122,6 +2134,7 @@ static const struct nla_policy xfrma_policy[XFRMA_MAX+1] = {
         [XFRMA_MIGRATE]         = { .len = sizeof(struct xfrm_user_migrate) },
         [XFRMA_KMADDRESS]       = { .len = sizeof(struct xfrm_user_kmaddress) },
         [XFRMA_MARK]            = { .len = sizeof(struct xfrm_mark) },
+        [XFRMA_TFCPAD]          = { .type = NLA_U32 },
 };
 
 static struct xfrm_link {
@@ -2301,6 +2314,8 @@ static inline size_t xfrm_sa_len(struct xfrm_state *x)
                 l += nla_total_size(sizeof(*x->calg));
         if (x->encap)
                 l += nla_total_size(sizeof(*x->encap));
+        if (x->tfcpad)
+                l += nla_total_size(sizeof(x->tfcpad));
         if (x->security)
                 l += nla_total_size(sizeof(struct xfrm_user_sec_ctx) +
                                     x->security->ctx_len);