20 files changed, 117 insertions, 75 deletions

diff --git a/net/9p/mux.c b/net/9p/mux.c
index f14014793bed..c9f0805048e4 100644
--- a/net/9p/mux.c
+++ b/net/9p/mux.c
@@ -222,8 +222,10 @@ static int p9_mux_poll_start(struct p9_conn *m)
         }
 
         if (i >= ARRAY_SIZE(p9_mux_poll_tasks)) {
-                if (vptlast == NULL)
+                if (vptlast == NULL) {
+                        mutex_unlock(&p9_mux_task_lock);
                         return -ENOMEM;
+                }
 
                 P9_DPRINTK(P9_DEBUG_MUX, "put in proc %d\n", i);
                 list_add(&m->mux_list, &vptlast->mux_list);
diff --git a/net/core/dev.c b/net/core/dev.c
index 872658927e47..f1647d7dd14b 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -120,6 +120,8 @@
 #include <linux/ctype.h>
 #include <linux/if_arp.h>
 
+#include "net-sysfs.h"
+
 /*
  *      The list of packet types we will receive (as opposed to discard)
  *      and the routines to invoke.
@@ -249,10 +251,6 @@ static RAW_NOTIFIER_HEAD(netdev_chain);
 
 DEFINE_PER_CPU(struct softnet_data, softnet_data);
 
-extern int netdev_kobject_init(void);
-extern int netdev_register_kobject(struct net_device *);
-extern void netdev_unregister_kobject(struct net_device *);
-
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 /*
  * register_netdevice() inits dev->_xmit_lock and sets lockdep class
@@ -1007,17 +1005,20 @@ int dev_open(struct net_device *dev)
          *      Call device private open method
          */
         set_bit(__LINK_STATE_START, &dev->state);
-        if (dev->open) {
+
+        if (dev->validate_addr)
+                ret = dev->validate_addr(dev);
+
+        if (!ret && dev->open)
                 ret = dev->open(dev);
-                if (ret)
-                        clear_bit(__LINK_STATE_START, &dev->state);
-        }
 
         /*
          *      If it went open OK then:
          */
 
-        if (!ret) {
+        if (ret)
+                clear_bit(__LINK_STATE_START, &dev->state);
+        else {
                 /*
                  *      Set the flags.
                  */
@@ -1038,6 +1039,7 @@ int dev_open(struct net_device *dev)
                  */
                 call_netdevice_notifiers(NETDEV_UP, dev);
         }
+
         return ret;
 }
 
diff --git a/net/core/flow.c b/net/core/flow.c
index 0ab5234b17d8..3ed2b4b1d6d4 100644
--- a/net/core/flow.c
+++ b/net/core/flow.c
@@ -142,8 +142,6 @@ typedef u64 flow_compare_t;
 typedef u32 flow_compare_t;
 #endif
 
-extern void flowi_is_missized(void);
-
 /* I hear what you're saying, use memcmp.  But memcmp cannot make
  * important assumptions that we can here, such as alignment and
  * constant size.
@@ -153,8 +151,7 @@ static int flow_key_compare(struct flowi *key1, struct flowi *key2)
         flow_compare_t *k1, *k1_lim, *k2;
         const int n_elem = sizeof(struct flowi) / sizeof(flow_compare_t);
 
-        if (sizeof(struct flowi) % sizeof(flow_compare_t))
-                flowi_is_missized();
+        BUILD_BUG_ON(sizeof(struct flowi) % sizeof(flow_compare_t));
 
         k1 = (flow_compare_t *) key1;
         k1_lim = k1 + n_elem;
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 6628e457ddc0..61ead1d11132 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -18,6 +18,8 @@
 #include <linux/wireless.h>
 #include <net/iw_handler.h>
 
+#include "net-sysfs.h"
+
 #ifdef CONFIG_SYSFS
 static const char fmt_hex[] = "%#x\n";
 static const char fmt_long_hex[] = "%#lx\n";
diff --git a/net/core/net-sysfs.h b/net/core/net-sysfs.h
new file mode 100644
index 000000000000..f5f108db3924
--- /dev/null
+++ b/net/core/net-sysfs.h
@@ -0,0 +1,8 @@
+#ifndef __NET_SYSFS_H__
+#define __NET_SYSFS_H__
+
+int netdev_kobject_init(void);
+int netdev_register_kobject(struct net_device *);
+void netdev_unregister_kobject(struct net_device *);
+
+#endif
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index 6d5ea9762040..113cc728dc31 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -9,25 +9,12 @@
 #include <linux/sysctl.h>
 #include <linux/module.h>
 #include <linux/socket.h>
+#include <linux/netdevice.h>
 #include <net/sock.h>
+#include <net/xfrm.h>
 
 #ifdef CONFIG_SYSCTL
 
-extern int netdev_max_backlog;
-extern int weight_p;
-
-extern __u32 sysctl_wmem_max;
-extern __u32 sysctl_rmem_max;
-
-extern int sysctl_core_destroy_delay;
-
-#ifdef CONFIG_XFRM
-extern u32 sysctl_xfrm_aevent_etime;
-extern u32 sysctl_xfrm_aevent_rseqth;
-extern int sysctl_xfrm_larval_drop;
-extern u32 sysctl_xfrm_acq_expires;
-#endif
-
 ctl_table core_table[] = {
 #ifdef CONFIG_NET
         {
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index cc9bf1cb2646..d84973928033 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -26,6 +26,7 @@
 #include <net/sock.h>
 #include <net/xfrm.h>
 
+#include <asm/ioctls.h>
 #include <asm/semaphore.h>
 #include <linux/spinlock.h>
 #include <linux/timer.h>
@@ -378,8 +379,36 @@ EXPORT_SYMBOL_GPL(dccp_poll);
 
 int dccp_ioctl(struct sock *sk, int cmd, unsigned long arg)
 {
-        dccp_pr_debug("entry\n");
-        return -ENOIOCTLCMD;
+        int rc = -ENOTCONN;
+
+        lock_sock(sk);
+
+        if (sk->sk_state == DCCP_LISTEN)
+                goto out;
+
+        switch (cmd) {
+        case SIOCINQ: {
+                struct sk_buff *skb;
+                unsigned long amount = 0;
+
+                skb = skb_peek(&sk->sk_receive_queue);
+                if (skb != NULL) {
+                        /*
+                         * We will only return the amount of this packet since
+                         * that is all that will be read.
+                         */
+                        amount = skb->len;
+                }
+                rc = put_user(amount, (int __user *)arg);
+        }
+                break;
+        default:
+                rc = -ENOIOCTLCMD;
+                break;
+        }
+out:
+        release_sock(sk);
+        return rc;
 }
 
 EXPORT_SYMBOL_GPL(dccp_ioctl);
diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c
index ed8a3d49487d..6b2e454ae313 100644
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -298,6 +298,14 @@ static int eth_change_mtu(struct net_device *dev, int new_mtu)
         return 0;
 }
 
+static int eth_validate_addr(struct net_device *dev)
+{
+        if (!is_valid_ether_addr(dev->dev_addr))
+                return -EINVAL;
+
+        return 0;
+}
+
 const struct header_ops eth_header_ops ____cacheline_aligned = {
         .create         = eth_header,
         .parse          = eth_header_parse,
@@ -317,6 +325,7 @@ void ether_setup(struct net_device *dev)
 
         dev->change_mtu         = eth_change_mtu;
         dev->set_mac_address    = eth_mac_addr;
+        dev->validate_addr      = eth_validate_addr;
 
         dev->type               = ARPHRD_ETHER;
         dev->hard_header_len    = ETH_HLEN;
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 78b514ba1414..60123905dbbf 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -128,13 +128,14 @@ struct net_device * ip_dev_find(__be32 addr)
         struct flowi fl = { .nl_u = { .ip4_u = { .daddr = addr } } };
         struct fib_result res;
         struct net_device *dev = NULL;
+        struct fib_table *local_table;
 
 #ifdef CONFIG_IP_MULTIPLE_TABLES
         res.r = NULL;
 #endif
 
-        if (!ip_fib_local_table ||
-            ip_fib_local_table->tb_lookup(ip_fib_local_table, &fl, &res))
+        local_table = fib_get_table(RT_TABLE_LOCAL);
+        if (!local_table || local_table->tb_lookup(local_table, &fl, &res))
                 return NULL;
         if (res.type != RTN_LOCAL)
                 goto out;
@@ -152,6 +153,7 @@ unsigned inet_addr_type(__be32 addr)
         struct flowi            fl = { .nl_u = { .ip4_u = { .daddr = addr } } };
         struct fib_result       res;
         unsigned ret = RTN_BROADCAST;
+        struct fib_table *local_table;
 
         if (ZERONET(addr) || BADCLASS(addr))
                 return RTN_BROADCAST;
@@ -162,10 +164,10 @@ unsigned inet_addr_type(__be32 addr)
         res.r = NULL;
 #endif
 
-        if (ip_fib_local_table) {
+        local_table = fib_get_table(RT_TABLE_LOCAL);
+        if (local_table) {
                 ret = RTN_UNICAST;
-                if (!ip_fib_local_table->tb_lookup(ip_fib_local_table,
-                                                   &fl, &res)) {
+                if (!local_table->tb_lookup(local_table, &fl, &res)) {
                         ret = res.type;
                         fib_res_put(&res);
                 }
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index f151900efaf9..02b02a8d681c 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -674,7 +674,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
         struct rtable *rt;                      /* Route to the other host */
         struct net_device *tdev;                        /* Device to other host */
         struct iphdr  *iph;                     /* Our new IP header */
-        int    max_headroom;                    /* The extra header space needed */
+        unsigned int max_headroom;              /* The extra header space needed */
         int    gre_hlen;
         __be32 dst;
         int    mtu;
@@ -1033,7 +1033,6 @@ static int ipgre_tunnel_change_mtu(struct net_device *dev, int new_mtu)
         return 0;
 }
 
-#ifdef CONFIG_NET_IPGRE_BROADCAST
 /* Nice toy. Unfortunately, useless in real life :-)
    It allows to construct virtual multiprotocol broadcast "LAN"
    over the Internet, provided multicast routing is tuned.
@@ -1092,10 +1091,19 @@ static int ipgre_header(struct sk_buff *skb, struct net_device *dev,
         return -t->hlen;
 }
 
+static int ipgre_header_parse(const struct sk_buff *skb, unsigned char *haddr)
+{
+        struct iphdr *iph = (struct iphdr*) skb_mac_header(skb);
+        memcpy(haddr, &iph->saddr, 4);
+        return 4;
+}
+
 static const struct header_ops ipgre_header_ops = {
         .create = ipgre_header,
+        .parse  = ipgre_header_parse,
 };
 
+#ifdef CONFIG_NET_IPGRE_BROADCAST
 static int ipgre_open(struct net_device *dev)
 {
         struct ip_tunnel *t = netdev_priv(dev);
@@ -1197,6 +1205,8 @@ static int ipgre_tunnel_init(struct net_device *dev)
                         dev->stop = ipgre_close;
                 }
 #endif
+        } else {
+                dev->header_ops = &ipgre_header_ops;
         }
 
         if (!tdev && tunnel->parms.link)
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index f508835ba713..e5f7dc2de303 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -161,7 +161,7 @@ static inline int ip_finish_output2(struct sk_buff *skb)
         struct dst_entry *dst = skb->dst;
         struct rtable *rt = (struct rtable *)dst;
         struct net_device *dev = dst->dev;
-        int hh_len = LL_RESERVED_SPACE(dev);
+        unsigned int hh_len = LL_RESERVED_SPACE(dev);
 
         if (rt->rt_type == RTN_MULTICAST)
                 IP_INC_STATS(IPSTATS_MIB_OUTMCASTPKTS);
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 5cd5bbe1379a..8c2b2b0741da 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -515,7 +515,7 @@ static int ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
         struct net_device *tdev;                        /* Device to other host */
         struct iphdr  *old_iph = ip_hdr(skb);
         struct iphdr  *iph;                     /* Our new IP header */
-        int    max_headroom;                    /* The extra header space needed */
+        unsigned int max_headroom;              /* The extra header space needed */
         __be32 dst = tiph->daddr;
         int    mtu;
 
diff --git a/net/ipv4/ipvs/ip_vs_xmit.c b/net/ipv4/ipvs/ip_vs_xmit.c
index d0a92dec1050..7c074e386c17 100644
--- a/net/ipv4/ipvs/ip_vs_xmit.c
+++ b/net/ipv4/ipvs/ip_vs_xmit.c
@@ -325,7 +325,7 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
         __be16 df = old_iph->frag_off;
         sk_buff_data_t old_transport_header = skb->transport_header;
         struct iphdr  *iph;                     /* Our new IP header */
-        int    max_headroom;                    /* The extra header space needed */
+        unsigned int max_headroom;              /* The extra header space needed */
         int    mtu;
 
         EnterFunction(10);
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 9288220b73a8..3dbbb44b3e7d 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -3909,7 +3909,7 @@ tcp_collapse(struct sock *sk, struct sk_buff_head *list,
 
         while (before(start, end)) {
                 struct sk_buff *nskb;
-                int header = skb_headroom(skb);
+                unsigned int header = skb_headroom(skb);
                 int copy = SKB_MAX_ORDER(header, 0);
 
                 /* Too big header? This can happen with IPv6. */
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 13565dfb1b45..653fc0a8235b 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -171,7 +171,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
         u32 mtu;
 
         if (opt) {
-                int head_room;
+                unsigned int head_room;
 
                 /* First: exthdrs may take lots of space (~8K for now)
                    MAX_HEADER is not enough.
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 2320cc27ff9e..5383b33db8ca 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -838,7 +838,7 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
         struct dst_entry *dst;
         struct net_device *tdev;
         int mtu;
-        int max_headroom = sizeof(struct ipv6hdr);
+        unsigned int max_headroom = sizeof(struct ipv6hdr);
         u8 proto;
         int err = -1;
         int pkt_len;
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 466657a9a8bd..71433d29d884 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -430,7 +430,7 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
         struct rtable *rt;                      /* Route to the other host */
         struct net_device *tdev;                        /* Device to other host */
         struct iphdr  *iph;                     /* Our new IP header */
-        int    max_headroom;                    /* The extra header space needed */
+        unsigned int max_headroom;              /* The extra header space needed */
         __be32 dst = tiph->daddr;
         int    mtu;
         struct in6_addr *addr6;
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 98e313e5e594..325272925d0f 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1565,7 +1565,11 @@ int netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
 
         netlink_dump(sk);
         sock_put(sk);
-        return 0;
+
+        /* We successfully started a dump, by returning -EINTR we
+         * signal not to send ACK even if it was requested.
+         */
+        return -EINTR;
 }
 
 void netlink_ack(struct sk_buff *in_skb, struct nlmsghdr *nlh, int err)
@@ -1619,17 +1623,21 @@ int netlink_rcv_skb(struct sk_buff *skb, int (*cb)(struct sk_buff *,
 
                 /* Only requests are handled by the kernel */
                 if (!(nlh->nlmsg_flags & NLM_F_REQUEST))
-                        goto skip;
+                        goto ack;
 
                 /* Skip control messages */
                 if (nlh->nlmsg_type < NLMSG_MIN_TYPE)
-                        goto skip;
+                        goto ack;
 
                 err = cb(skb, nlh);
-skip:
+                if (err == -EINTR)
+                        goto skip;
+
+ack:
                 if (nlh->nlmsg_flags & NLM_F_ACK || err)
                         netlink_ack(skb, nlh, err);
 
+skip:
                 msglen = NLMSG_ALIGN(nlh->nlmsg_len);
                 if (msglen > skb->len)
                         msglen = skb->len;
diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c
index abd82fc3ec60..de894096e442 100644
--- a/net/sched/sch_prio.c
+++ b/net/sched/sch_prio.c
@@ -136,7 +136,7 @@ prio_dequeue(struct Qdisc* sch)
                  * pulling an skb.  This way we avoid excessive requeues
                  * for slower queues.
                  */
-                if (!netif_subqueue_stopped(sch->dev, (q->mq ? prio : 0))) {
+                if (!__netif_subqueue_stopped(sch->dev, (q->mq ? prio : 0))) {
                         qdisc = q->queues[prio];
                         skb = qdisc->dequeue(qdisc);
                         if (skb) {
@@ -165,7 +165,7 @@ static struct sk_buff *rr_dequeue(struct Qdisc* sch)
                  * for slower queues.  If the queue is stopped, try the
                  * next queue.
                  */
-                if (!netif_subqueue_stopped(sch->dev,
+                if (!__netif_subqueue_stopped(sch->dev,
                                             (q->mq ? q->curband : 0))) {
                         qdisc = q->queues[q->curband];
                         skb = qdisc->dequeue(qdisc);
diff --git a/net/sctp/ulpqueue.c b/net/sctp/ulpqueue.c
index b9370956b187..4be92d0a2cab 100644
--- a/net/sctp/ulpqueue.c
+++ b/net/sctp/ulpqueue.c
@@ -908,8 +908,8 @@ void sctp_ulpq_skip(struct sctp_ulpq *ulpq, __u16 sid, __u16 ssn)
         return;
 }
 
-/* Renege 'needed' bytes from the ordering queue. */
-static __u16 sctp_ulpq_renege_order(struct sctp_ulpq *ulpq, __u16 needed)
+static __u16 sctp_ulpq_renege_list(struct sctp_ulpq *ulpq,
+                struct sk_buff_head *list, __u16 needed)
 {
         __u16 freed = 0;
         __u32 tsn;
@@ -919,7 +919,7 @@ static __u16 sctp_ulpq_renege_order(struct sctp_ulpq *ulpq, __u16 needed)
 
         tsnmap = &ulpq->asoc->peer.tsn_map;
 
-        while ((skb = __skb_dequeue_tail(&ulpq->lobby)) != NULL) {
+        while ((skb = __skb_dequeue_tail(list)) != NULL) {
                 freed += skb_headlen(skb);
                 event = sctp_skb2event(skb);
                 tsn = event->tsn;
@@ -933,30 +933,16 @@ static __u16 sctp_ulpq_renege_order(struct sctp_ulpq *ulpq, __u16 needed)
         return freed;
 }
 
+/* Renege 'needed' bytes from the ordering queue. */
+static __u16 sctp_ulpq_renege_order(struct sctp_ulpq *ulpq, __u16 needed)
+{
+        return sctp_ulpq_renege_list(ulpq, &ulpq->lobby, needed);
+}
+
 /* Renege 'needed' bytes from the reassembly queue. */
 static __u16 sctp_ulpq_renege_frags(struct sctp_ulpq *ulpq, __u16 needed)
 {
-        __u16 freed = 0;
-        __u32 tsn;
-        struct sk_buff *skb;
-        struct sctp_ulpevent *event;
-        struct sctp_tsnmap *tsnmap;
-
-        tsnmap = &ulpq->asoc->peer.tsn_map;
-
-        /* Walk backwards through the list, reneges the newest tsns. */
-        while ((skb = __skb_dequeue_tail(&ulpq->reasm)) != NULL) {
-                freed += skb_headlen(skb);
-                event = sctp_skb2event(skb);
-                tsn = event->tsn;
-
-                sctp_ulpevent_free(event);
-                sctp_tsnmap_renege(tsnmap, tsn);
-                if (freed >= needed)
-                        return freed;
-        }
-
-        return freed;
+        return sctp_ulpq_renege_list(ulpq, &ulpq->reasm, needed);
 }
 
 /* Partial deliver the first message as there is pressure on rwnd. */