Merge tag 'asoc-v3.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v3.14

A few things here:
 - Avoid memory leaks in error cases with DPCM, this code has never been
   that well tested in mainline due to the lack of mainline drivers but
   we now have one queued for the merge window!
 - Fix the N810 audio driver to load when booted with DT since the
   platform was converted to DT during the merge window.
 - Fixes for initialisation of some MFD drivers that are probably unused
   in mainline

81 files changed, 887 insertions, 563 deletions

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 512159bf607f..8323bced8e5b 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -241,19 +241,19 @@ batadv_iv_ogm_orig_get(struct batadv_priv *bat_priv, const uint8_t *addr)
         size = bat_priv->num_ifaces * sizeof(uint8_t);
         orig_node->bat_iv.bcast_own_sum = kzalloc(size, GFP_ATOMIC);
         if (!orig_node->bat_iv.bcast_own_sum)
-                goto free_bcast_own;
+                goto free_orig_node;
 
         hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig,
                                      batadv_choose_orig, orig_node,
                                      &orig_node->hash_entry);
         if (hash_added != 0)
-                goto free_bcast_own;
+                goto free_orig_node;
 
         return orig_node;
 
-free_bcast_own:
-        kfree(orig_node->bat_iv.bcast_own);
 free_orig_node:
+        /* free twice, as batadv_orig_node_new sets refcount to 2 */
+        batadv_orig_node_free_ref(orig_node);
         batadv_orig_node_free_ref(orig_node);
 
         return NULL;
@@ -266,7 +266,7 @@ batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface,
                         struct batadv_orig_node *orig_neigh)
 {
         struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
-        struct batadv_neigh_node *neigh_node;
+        struct batadv_neigh_node *neigh_node, *tmp_neigh_node;
 
         neigh_node = batadv_neigh_node_new(hard_iface, neigh_addr, orig_node);
         if (!neigh_node)
@@ -281,14 +281,24 @@ batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface,
         neigh_node->orig_node = orig_neigh;
         neigh_node->if_incoming = hard_iface;
 
-        batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
-                   "Creating new neighbor %pM for orig_node %pM on interface %s\n",
-                   neigh_addr, orig_node->orig, hard_iface->net_dev->name);
-
         spin_lock_bh(&orig_node->neigh_list_lock);
-        hlist_add_head_rcu(&neigh_node->list, &orig_node->neigh_list);
+        tmp_neigh_node = batadv_neigh_node_get(orig_node, hard_iface,
+                                               neigh_addr);
+        if (!tmp_neigh_node) {
+                hlist_add_head_rcu(&neigh_node->list, &orig_node->neigh_list);
+        } else {
+                kfree(neigh_node);
+                batadv_hardif_free_ref(hard_iface);
+                neigh_node = tmp_neigh_node;
+        }
         spin_unlock_bh(&orig_node->neigh_list_lock);
 
+        if (!tmp_neigh_node)
+                batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
+                           "Creating new neighbor %pM for orig_node %pM on interface %s\n",
+                           neigh_addr, orig_node->orig,
+                           hard_iface->net_dev->name);
+
 out:
         return neigh_node;
 }
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 3d417d3641c6..b851cc580853 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -241,7 +241,7 @@ int batadv_hardif_min_mtu(struct net_device *soft_iface)
 {
         struct batadv_priv *bat_priv = netdev_priv(soft_iface);
         const struct batadv_hard_iface *hard_iface;
-        int min_mtu = ETH_DATA_LEN;
+        int min_mtu = INT_MAX;
 
         rcu_read_lock();
         list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
@@ -256,8 +256,6 @@ int batadv_hardif_min_mtu(struct net_device *soft_iface)
         }
         rcu_read_unlock();
 
-        atomic_set(&bat_priv->packet_size_max, min_mtu);
-
         if (atomic_read(&bat_priv->fragmentation) == 0)
                 goto out;
 
@@ -268,13 +266,21 @@ int batadv_hardif_min_mtu(struct net_device *soft_iface)
         min_mtu = min_t(int, min_mtu, BATADV_FRAG_MAX_FRAG_SIZE);
         min_mtu -= sizeof(struct batadv_frag_packet);
         min_mtu *= BATADV_FRAG_MAX_FRAGMENTS;
-        atomic_set(&bat_priv->packet_size_max, min_mtu);
-
-        /* with fragmentation enabled we can fragment external packets easily */
-        min_mtu = min_t(int, min_mtu, ETH_DATA_LEN);
 
 out:
-        return min_mtu - batadv_max_header_len();
+        /* report to the other components the maximum amount of bytes that
+         * batman-adv can send over the wire (without considering the payload
+         * overhead). For example, this value is used by TT to compute the
+         * maximum local table table size
+         */
+        atomic_set(&bat_priv->packet_size_max, min_mtu);
+
+        /* the real soft-interface MTU is computed by removing the payload
+         * overhead from the maximum amount of bytes that was just computed.
+         *
+         * However batman-adv does not support MTUs bigger than ETH_DATA_LEN
+         */
+        return min_t(int, min_mtu - batadv_max_header_len(), ETH_DATA_LEN);
 }
 
 /* adjusts the MTU if a new interface with a smaller MTU appeared. */
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 6df12a2e3605..853941629dc1 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -458,6 +458,42 @@ out:
 }
 
 /**
+ * batadv_neigh_node_get - retrieve a neighbour from the list
+ * @orig_node: originator which the neighbour belongs to
+ * @hard_iface: the interface where this neighbour is connected to
+ * @addr: the address of the neighbour
+ *
+ * Looks for and possibly returns a neighbour belonging to this originator list
+ * which is connected through the provided hard interface.
+ * Returns NULL if the neighbour is not found.
+ */
+struct batadv_neigh_node *
+batadv_neigh_node_get(const struct batadv_orig_node *orig_node,
+                      const struct batadv_hard_iface *hard_iface,
+                      const uint8_t *addr)
+{
+        struct batadv_neigh_node *tmp_neigh_node, *res = NULL;
+
+        rcu_read_lock();
+        hlist_for_each_entry_rcu(tmp_neigh_node, &orig_node->neigh_list, list) {
+                if (!batadv_compare_eth(tmp_neigh_node->addr, addr))
+                        continue;
+
+                if (tmp_neigh_node->if_incoming != hard_iface)
+                        continue;
+
+                if (!atomic_inc_not_zero(&tmp_neigh_node->refcount))
+                        continue;
+
+                res = tmp_neigh_node;
+                break;
+        }
+        rcu_read_unlock();
+
+        return res;
+}
+
+/**
  * batadv_orig_ifinfo_free_rcu - free the orig_ifinfo object
  * @rcu: rcu pointer of the orig_ifinfo object
  */
diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h
index 37be290f63f6..db3a9ed734cb 100644
--- a/net/batman-adv/originator.h
+++ b/net/batman-adv/originator.h
@@ -29,6 +29,10 @@ void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node);
 struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
                                               const uint8_t *addr);
 struct batadv_neigh_node *
+batadv_neigh_node_get(const struct batadv_orig_node *orig_node,
+                      const struct batadv_hard_iface *hard_iface,
+                      const uint8_t *addr);
+struct batadv_neigh_node *
 batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
                       const uint8_t *neigh_addr,
                       struct batadv_orig_node *orig_node);
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index 1ed9f7c9ecea..a953d5b196a3 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -688,7 +688,7 @@ static int batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
         int is_old_ttvn;
 
         /* check if there is enough data before accessing it */
-        if (pskb_may_pull(skb, hdr_len + ETH_HLEN) < 0)
+        if (!pskb_may_pull(skb, hdr_len + ETH_HLEN))
                 return 0;
 
         /* create a copy of the skb (in case of for re-routing) to modify it. */
@@ -918,6 +918,8 @@ int batadv_recv_unicast_tvlv(struct sk_buff *skb,
 
         if (ret != NET_RX_SUCCESS)
                 ret = batadv_route_unicast_packet(skb, recv_if);
+        else
+                consume_skb(skb);
 
         return ret;
 }
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 579f5f00a385..843febd1e519 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -254,9 +254,9 @@ static int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
                                    struct batadv_orig_node *orig_node,
                                    unsigned short vid)
 {
-        struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
+        struct ethhdr *ethhdr;
         struct batadv_unicast_packet *unicast_packet;
-        int ret = NET_XMIT_DROP;
+        int ret = NET_XMIT_DROP, hdr_size;
 
         if (!orig_node)
                 goto out;
@@ -265,12 +265,16 @@ static int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
         case BATADV_UNICAST:
                 if (!batadv_send_skb_prepare_unicast(skb, orig_node))
                         goto out;
+
+                hdr_size = sizeof(*unicast_packet);
                 break;
         case BATADV_UNICAST_4ADDR:
                 if (!batadv_send_skb_prepare_unicast_4addr(bat_priv, skb,
                                                            orig_node,
                                                            packet_subtype))
                         goto out;
+
+                hdr_size = sizeof(struct batadv_unicast_4addr_packet);
                 break;
         default:
                 /* this function supports UNICAST and UNICAST_4ADDR only. It
@@ -279,6 +283,7 @@ static int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
                 goto out;
         }
 
+        ethhdr = (struct ethhdr *)(skb->data + hdr_size);
         unicast_packet = (struct batadv_unicast_packet *)skb->data;
 
         /* inform the destination node that we are still missing a correct route
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index b6071f675a3e..959dde721c46 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1975,6 +1975,7 @@ static uint32_t batadv_tt_global_crc(struct batadv_priv *bat_priv,
         struct hlist_head *head;
         uint32_t i, crc_tmp, crc = 0;
         uint8_t flags;
+        __be16 tmp_vid;
 
         for (i = 0; i < hash->size; i++) {
                 head = &hash->table[i];
@@ -2011,8 +2012,11 @@ static uint32_t batadv_tt_global_crc(struct batadv_priv *bat_priv,
                                                              orig_node))
                                 continue;
 
-                        crc_tmp = crc32c(0, &tt_common->vid,
-                                         sizeof(tt_common->vid));
+                        /* use network order to read the VID: this ensures that
+                         * every node reads the bytes in the same order.
+                         */
+                        tmp_vid = htons(tt_common->vid);
+                        crc_tmp = crc32c(0, &tmp_vid, sizeof(tmp_vid));
 
                         /* compute the CRC on flags that have to be kept in sync
                          * among nodes
@@ -2046,6 +2050,7 @@ static uint32_t batadv_tt_local_crc(struct batadv_priv *bat_priv,
         struct hlist_head *head;
         uint32_t i, crc_tmp, crc = 0;
         uint8_t flags;
+        __be16 tmp_vid;
 
         for (i = 0; i < hash->size; i++) {
                 head = &hash->table[i];
@@ -2064,8 +2069,11 @@ static uint32_t batadv_tt_local_crc(struct batadv_priv *bat_priv,
                         if (tt_common->flags & BATADV_TT_CLIENT_NEW)
                                 continue;
 
-                        crc_tmp = crc32c(0, &tt_common->vid,
-                                         sizeof(tt_common->vid));
+                        /* use network order to read the VID: this ensures that
+                         * every node reads the bytes in the same order.
+                         */
+                        tmp_vid = htons(tt_common->vid);
+                        crc_tmp = crc32c(0, &tmp_vid, sizeof(tmp_vid));
 
                         /* compute the CRC on flags that have to be kept in sync
                          * among nodes
@@ -2262,6 +2270,7 @@ static bool batadv_tt_global_check_crc(struct batadv_orig_node *orig_node,
 {
         struct batadv_tvlv_tt_vlan_data *tt_vlan_tmp;
         struct batadv_orig_node_vlan *vlan;
+        uint32_t crc;
         int i;
 
         /* check if each received CRC matches the locally stored one */
@@ -2281,7 +2290,10 @@ static bool batadv_tt_global_check_crc(struct batadv_orig_node *orig_node,
                 if (!vlan)
                         return false;
 
-                if (vlan->tt.crc != ntohl(tt_vlan_tmp->crc))
+                crc = vlan->tt.crc;
+                batadv_orig_node_vlan_free_ref(vlan);
+
+                if (crc != ntohl(tt_vlan_tmp->crc))
                         return false;
         }
 
@@ -3218,7 +3230,6 @@ static void batadv_tt_update_orig(struct batadv_priv *bat_priv,
 
                 spin_lock_bh(&orig_node->tt_lock);
 
-                tt_change = (struct batadv_tvlv_tt_change *)tt_buff;
                 batadv_tt_update_changes(bat_priv, orig_node, tt_num_changes,
                                          ttvn, tt_change);
 
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 292e619db896..d9fb93451442 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -430,6 +430,16 @@ static void hidp_del_timer(struct hidp_session *session)
                 del_timer(&session->timer);
 }
 
+static void hidp_process_report(struct hidp_session *session,
+                                int type, const u8 *data, int len, int intr)
+{
+        if (len > HID_MAX_BUFFER_SIZE)
+                len = HID_MAX_BUFFER_SIZE;
+
+        memcpy(session->input_buf, data, len);
+        hid_input_report(session->hid, type, session->input_buf, len, intr);
+}
+
 static void hidp_process_handshake(struct hidp_session *session,
                                         unsigned char param)
 {
@@ -502,7 +512,8 @@ static int hidp_process_data(struct hidp_session *session, struct sk_buff *skb,
                         hidp_input_report(session, skb);
 
                 if (session->hid)
-                        hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 0);
+                        hidp_process_report(session, HID_INPUT_REPORT,
+                                            skb->data, skb->len, 0);
                 break;
 
         case HIDP_DATA_RTYPE_OTHER:
@@ -584,7 +595,8 @@ static void hidp_recv_intr_frame(struct hidp_session *session,
                         hidp_input_report(session, skb);
 
                 if (session->hid) {
-                        hid_input_report(session->hid, HID_INPUT_REPORT, skb->data, skb->len, 1);
+                        hidp_process_report(session, HID_INPUT_REPORT,
+                                            skb->data, skb->len, 1);
                         BT_DBG("report len %d", skb->len);
                 }
         } else {
diff --git a/net/bluetooth/hidp/hidp.h b/net/bluetooth/hidp/hidp.h
index ab5241400cf7..8798492a6e99 100644
--- a/net/bluetooth/hidp/hidp.h
+++ b/net/bluetooth/hidp/hidp.h
@@ -24,6 +24,7 @@
 #define __HIDP_H
 
 #include <linux/types.h>
+#include <linux/hid.h>
 #include <linux/kref.h>
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/l2cap.h>
@@ -179,6 +180,9 @@ struct hidp_session {
 
         /* Used in hidp_output_raw_report() */
         int output_report_success; /* boolean */
+
+        /* temporary input buffer */
+        u8 input_buf[HID_MAX_BUFFER_SIZE];
 };
 
 /* HIDP init defines */
diff --git a/net/can/raw.c b/net/can/raw.c
index 8be757cca2ec..081e81fd017f 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -121,13 +121,9 @@ static void raw_rcv(struct sk_buff *oskb, void *data)
         if (!ro->recv_own_msgs && oskb->sk == sk)
                 return;
 
-        /* do not pass frames with DLC > 8 to a legacy socket */
-        if (!ro->fd_frames) {
-                struct canfd_frame *cfd = (struct canfd_frame *)oskb->data;
-
-                if (unlikely(cfd->len > CAN_MAX_DLEN))
-                        return;
-        }
+        /* do not pass non-CAN2.0 frames to a legacy socket */
+        if (!ro->fd_frames && oskb->len != CAN_MTU)
+                return;
 
         /* clone the given skb to be able to enqueue it into the rcv queue */
         skb = skb_clone(oskb, GFP_ATOMIC);
@@ -738,9 +734,7 @@ static int raw_recvmsg(struct kiocb *iocb, struct socket *sock,
                        struct msghdr *msg, size_t size, int flags)
 {
         struct sock *sk = sock->sk;
-        struct raw_sock *ro = raw_sk(sk);
         struct sk_buff *skb;
-        int rxmtu;
         int err = 0;
         int noblock;
 
@@ -751,20 +745,10 @@ static int raw_recvmsg(struct kiocb *iocb, struct socket *sock,
         if (!skb)
                 return err;
 
-        /*
-         * when serving a legacy socket the DLC <= 8 is already checked inside
-         * raw_rcv(). Now check if we need to pass a canfd_frame to a legacy
-         * socket and cut the possible CANFD_MTU/CAN_MTU length to CAN_MTU
-         */
-        if (!ro->fd_frames)
-                rxmtu = CAN_MTU;
-        else
-                rxmtu = skb->len;
-
-        if (size < rxmtu)
+        if (size < skb->len)
                 msg->msg_flags |= MSG_TRUNC;
         else
-                size = rxmtu;
+                size = skb->len;
 
         err = memcpy_toiovec(msg->msg_iov, skb->data, size);
         if (err < 0) {
diff --git a/net/core/dev.c b/net/core/dev.c
index 4ad1b78c9c77..b1b0c8d4d7df 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2420,7 +2420,7 @@ EXPORT_SYMBOL(netdev_rx_csum_fault);
  * 2. No high memory really exists on this machine.
  */
 
-static int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
+static int illegal_highdma(const struct net_device *dev, struct sk_buff *skb)
 {
 #ifdef CONFIG_HIGHMEM
         int i;
@@ -2495,34 +2495,36 @@ static int dev_gso_segment(struct sk_buff *skb, netdev_features_t features)
 }
 
 static netdev_features_t harmonize_features(struct sk_buff *skb,
-        netdev_features_t features)
+                                            const struct net_device *dev,
+                                            netdev_features_t features)
 {
         if (skb->ip_summed != CHECKSUM_NONE &&
             !can_checksum_protocol(features, skb_network_protocol(skb))) {
                 features &= ~NETIF_F_ALL_CSUM;
-        } else if (illegal_highdma(skb->dev, skb)) {
+        } else if (illegal_highdma(dev, skb)) {
                 features &= ~NETIF_F_SG;
         }
 
         return features;
 }
 
-netdev_features_t netif_skb_features(struct sk_buff *skb)
+netdev_features_t netif_skb_dev_features(struct sk_buff *skb,
+                                         const struct net_device *dev)
 {
         __be16 protocol = skb->protocol;
-        netdev_features_t features = skb->dev->features;
+        netdev_features_t features = dev->features;
 
-        if (skb_shinfo(skb)->gso_segs > skb->dev->gso_max_segs)
+        if (skb_shinfo(skb)->gso_segs > dev->gso_max_segs)
                 features &= ~NETIF_F_GSO_MASK;
 
         if (protocol == htons(ETH_P_8021Q) || protocol == htons(ETH_P_8021AD)) {
                 struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
                 protocol = veh->h_vlan_encapsulated_proto;
         } else if (!vlan_tx_tag_present(skb)) {
-                return harmonize_features(skb, features);
+                return harmonize_features(skb, dev, features);
         }
 
-        features &= (skb->dev->vlan_features | NETIF_F_HW_VLAN_CTAG_TX |
+        features &= (dev->vlan_features | NETIF_F_HW_VLAN_CTAG_TX |
                                                NETIF_F_HW_VLAN_STAG_TX);
 
         if (protocol == htons(ETH_P_8021Q) || protocol == htons(ETH_P_8021AD))
@@ -2530,9 +2532,9 @@ netdev_features_t netif_skb_features(struct sk_buff *skb)
                                 NETIF_F_GEN_CSUM | NETIF_F_HW_VLAN_CTAG_TX |
                                 NETIF_F_HW_VLAN_STAG_TX;
 
-        return harmonize_features(skb, features);
+        return harmonize_features(skb, dev, features);
 }
-EXPORT_SYMBOL(netif_skb_features);
+EXPORT_SYMBOL(netif_skb_dev_features);
 
 int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
                         struct netdev_queue *txq)
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 87577d447554..e29e810663d7 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -323,17 +323,6 @@ u32 __skb_get_poff(const struct sk_buff *skb)
         return poff;
 }
 
-static inline u16 dev_cap_txqueue(struct net_device *dev, u16 queue_index)
-{
-        if (unlikely(queue_index >= dev->real_num_tx_queues)) {
-                net_warn_ratelimited("%s selects TX queue %d, but real number of TX queues is %d\n",
-                                     dev->name, queue_index,
-                                     dev->real_num_tx_queues);
-                return 0;
-        }
-        return queue_index;
-}
-
 static inline int get_xps_queue(struct net_device *dev, struct sk_buff *skb)
 {
 #ifdef CONFIG_XPS
@@ -372,7 +361,7 @@ static inline int get_xps_queue(struct net_device *dev, struct sk_buff *skb)
 #endif
 }
 
-u16 __netdev_pick_tx(struct net_device *dev, struct sk_buff *skb)
+static u16 __netdev_pick_tx(struct net_device *dev, struct sk_buff *skb)
 {
         struct sock *sk = skb->sk;
         int queue_index = sk_tx_queue_get(sk);
@@ -392,7 +381,6 @@ u16 __netdev_pick_tx(struct net_device *dev, struct sk_buff *skb)
 
         return queue_index;
 }
-EXPORT_SYMBOL(__netdev_pick_tx);
 
 struct netdev_queue *netdev_pick_tx(struct net_device *dev,
                                     struct sk_buff *skb,
@@ -403,13 +391,13 @@ struct netdev_queue *netdev_pick_tx(struct net_device *dev,
         if (dev->real_num_tx_queues != 1) {
                 const struct net_device_ops *ops = dev->netdev_ops;
                 if (ops->ndo_select_queue)
-                        queue_index = ops->ndo_select_queue(dev, skb,
-                                                            accel_priv);
+                        queue_index = ops->ndo_select_queue(dev, skb, accel_priv,
+                                                            __netdev_pick_tx);
                 else
                         queue_index = __netdev_pick_tx(dev, skb);
 
                 if (!accel_priv)
-                        queue_index = dev_cap_txqueue(dev, queue_index);
+                        queue_index = netdev_cap_txqueue(dev, queue_index);
         }
 
         skb_set_queue_mapping(skb, queue_index);
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index b9e9e0d38672..e16129019c66 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -766,9 +766,6 @@ static void neigh_periodic_work(struct work_struct *work)
         nht = rcu_dereference_protected(tbl->nht,
                                         lockdep_is_held(&tbl->lock));
 
-        if (atomic_read(&tbl->entries) < tbl->gc_thresh1)
-                goto out;
-
         /*
          *      periodically recompute ReachableTime from random function
          */
@@ -781,6 +778,9 @@ static void neigh_periodic_work(struct work_struct *work)
                                 neigh_rand_reach_time(NEIGH_VAR(p, BASE_REACHABLE_TIME));
         }
 
+        if (atomic_read(&tbl->entries) < tbl->gc_thresh1)
+                goto out;
+
         for (i = 0 ; i < (1 << nht->hash_shift); i++) {
                 np = &nht->hash_buckets[i];
 
@@ -3046,7 +3046,7 @@ int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p,
         if (!t)
                 goto err;
 
-        for (i = 0; i < ARRAY_SIZE(t->neigh_vars); i++) {
+        for (i = 0; i < NEIGH_VAR_GC_INTERVAL; i++) {
                 t->neigh_vars[i].data += (long) p;
                 t->neigh_vars[i].extra1 = dev;
                 t->neigh_vars[i].extra2 = p;
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 048dc8d183aa..1a0dac2ef9ad 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1963,16 +1963,21 @@ replay:
 
                 dev->ifindex = ifm->ifi_index;
 
-                if (ops->newlink)
+                if (ops->newlink) {
                         err = ops->newlink(net, dev, tb, data);
-                else
+                        /* Drivers should call free_netdev() in ->destructor
+                         * and unregister it on failure so that device could be
+                         * finally freed in rtnl_unlock.
+                         */
+                        if (err < 0)
+                                goto out;
+                } else {
                         err = register_netdevice(dev);
-
-                if (err < 0) {
-                        free_netdev(dev);
-                        goto out;
+                        if (err < 0) {
+                                free_netdev(dev);
+                                goto out;
+                        }
                 }
-
                 err = rtnl_configure_link(dev, ifm);
                 if (err < 0)
                         unregister_netdevice(dev);
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 5976ef0846bd..5d6236d9fdce 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -707,9 +707,6 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
         new->mark               = old->mark;
         new->skb_iif            = old->skb_iif;
         __nf_copy(new, old);
-#if IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TRACE)
-        new->nf_trace           = old->nf_trace;
-#endif
 #ifdef CONFIG_NET_SCHED
         new->tc_index           = old->tc_index;
 #ifdef CONFIG_NET_CLS_ACT
diff --git a/net/dccp/ccids/lib/tfrc.c b/net/dccp/ccids/lib/tfrc.c
index c073b81a1f3e..62b5828acde0 100644
--- a/net/dccp/ccids/lib/tfrc.c
+++ b/net/dccp/ccids/lib/tfrc.c
@@ -8,7 +8,7 @@
 #include "tfrc.h"
 
 #ifdef CONFIG_IP_DCCP_TFRC_DEBUG
-static bool tfrc_debug;
+bool tfrc_debug;
 module_param(tfrc_debug, bool, 0644);
 MODULE_PARM_DESC(tfrc_debug, "Enable TFRC debug messages");
 #endif
diff --git a/net/dccp/ccids/lib/tfrc.h b/net/dccp/ccids/lib/tfrc.h
index a3d8f7c76ae0..40ee7d62b652 100644
--- a/net/dccp/ccids/lib/tfrc.h
+++ b/net/dccp/ccids/lib/tfrc.h
@@ -21,6 +21,7 @@
 #include "packet_history.h"
 
 #ifdef CONFIG_IP_DCCP_TFRC_DEBUG
+extern bool tfrc_debug;
 #define tfrc_pr_debug(format, a...)     DCCP_PR_DEBUG(tfrc_debug, format, ##a)
 #else
 #define tfrc_pr_debug(format, a...)
diff --git a/net/hsr/hsr_framereg.c b/net/hsr/hsr_framereg.c
index 327060c6c874..7ae0d7f6dbd0 100644
--- a/net/hsr/hsr_framereg.c
+++ b/net/hsr/hsr_framereg.c
@@ -297,7 +297,7 @@ static bool seq_nr_after(u16 a, u16 b)
 
 void hsr_register_frame_in(struct node_entry *node, enum hsr_dev_idx dev_idx)
 {
-        if ((dev_idx < 0) || (dev_idx >= HSR_MAX_DEV)) {
+        if ((dev_idx < 0) || (dev_idx >= HSR_MAX_SLAVE)) {
                 WARN_ONCE(1, "%s: Invalid dev_idx (%d)\n", __func__, dev_idx);
                 return;
         }
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index ecd2c3f245ce..19ab78aca547 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1296,8 +1296,11 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
 
         segs = ERR_PTR(-EPROTONOSUPPORT);
 
-        /* Note : following gso_segment() might change skb->encapsulation */
-        udpfrag = !skb->encapsulation && proto == IPPROTO_UDP;
+        if (skb->encapsulation &&
+            skb_shinfo(skb)->gso_type & (SKB_GSO_SIT|SKB_GSO_IPIP))
+                udpfrag = proto == IPPROTO_UDP && encap;
+        else
+                udpfrag = proto == IPPROTO_UDP && !skb->encapsulation;
 
         ops = rcu_dereference(inet_offloads[proto]);
         if (likely(ops && ops->callbacks.gso_segment))
diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c
index e9f1217a8afd..f3869c186d97 100644
--- a/net/ipv4/ip_forward.c
+++ b/net/ipv4/ip_forward.c
@@ -39,6 +39,71 @@
 #include <net/route.h>
 #include <net/xfrm.h>
 
+static bool ip_may_fragment(const struct sk_buff *skb)
+{
+        return unlikely((ip_hdr(skb)->frag_off & htons(IP_DF)) == 0) ||
+               !skb->local_df;
+}
+
+static bool ip_exceeds_mtu(const struct sk_buff *skb, unsigned int mtu)
+{
+        if (skb->len <= mtu || skb->local_df)
+                return false;
+
+        if (skb_is_gso(skb) && skb_gso_network_seglen(skb) <= mtu)
+                return false;
+
+        return true;
+}
+
+static bool ip_gso_exceeds_dst_mtu(const struct sk_buff *skb)
+{
+        unsigned int mtu;
+
+        if (skb->local_df || !skb_is_gso(skb))
+                return false;
+
+        mtu = ip_dst_mtu_maybe_forward(skb_dst(skb), true);
+
+        /* if seglen > mtu, do software segmentation for IP fragmentation on
+         * output.  DF bit cannot be set since ip_forward would have sent
+         * icmp error.
+         */
+        return skb_gso_network_seglen(skb) > mtu;
+}
+
+/* called if GSO skb needs to be fragmented on forward */
+static int ip_forward_finish_gso(struct sk_buff *skb)
+{
+        struct dst_entry *dst = skb_dst(skb);
+        netdev_features_t features;
+        struct sk_buff *segs;
+        int ret = 0;
+
+        features = netif_skb_dev_features(skb, dst->dev);
+        segs = skb_gso_segment(skb, features & ~NETIF_F_GSO_MASK);
+        if (IS_ERR(segs)) {
+                kfree_skb(skb);
+                return -ENOMEM;
+        }
+
+        consume_skb(skb);
+
+        do {
+                struct sk_buff *nskb = segs->next;
+                int err;
+
+                segs->next = NULL;
+                err = dst_output(segs);
+
+                if (err && ret == 0)
+                        ret = err;
+                segs = nskb;
+        } while (segs);
+
+        return ret;
+}
+
 static int ip_forward_finish(struct sk_buff *skb)
 {
         struct ip_options *opt  = &(IPCB(skb)->opt);
@@ -49,6 +114,9 @@ static int ip_forward_finish(struct sk_buff *skb)
         if (unlikely(opt->optlen))
                 ip_forward_options(skb);
 
+        if (ip_gso_exceeds_dst_mtu(skb))
+                return ip_forward_finish_gso(skb);
+
         return dst_output(skb);
 }
 
@@ -91,8 +159,7 @@ int ip_forward(struct sk_buff *skb)
 
         IPCB(skb)->flags |= IPSKB_FORWARDED;
         mtu = ip_dst_mtu_maybe_forward(&rt->dst, true);
-        if (unlikely(skb->len > mtu && !skb_is_gso(skb) &&
-                     (ip_hdr(skb)->frag_off & htons(IP_DF))) && !skb->local_df) {
+        if (!ip_may_fragment(skb) && ip_exceeds_mtu(skb, mtu)) {
                 IP_INC_STATS(dev_net(rt->dst.dev), IPSTATS_MIB_FRAGFAILS);
                 icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,
                           htonl(mtu));
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 8971780aec7c..73c6b63bba74 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -422,9 +422,6 @@ static void ip_copy_metadata(struct sk_buff *to, struct sk_buff *from)
         to->tc_index = from->tc_index;
 #endif
         nf_copy(to, from);
-#if IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TRACE)
-        to->nf_trace = from->nf_trace;
-#endif
 #if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
         to->ipvs_property = from->ipvs_property;
 #endif
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 50228be5c17b..78a89e61925d 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -93,13 +93,14 @@ static void tunnel_dst_reset(struct ip_tunnel *t)
         tunnel_dst_set(t, NULL);
 }
 
-static void tunnel_dst_reset_all(struct ip_tunnel *t)
+void ip_tunnel_dst_reset_all(struct ip_tunnel *t)
 {
         int i;
 
         for_each_possible_cpu(i)
                 __tunnel_dst_set(per_cpu_ptr(t->dst_cache, i), NULL);
 }
+EXPORT_SYMBOL(ip_tunnel_dst_reset_all);
 
 static struct rtable *tunnel_rtable_get(struct ip_tunnel *t, u32 cookie)
 {
@@ -119,52 +120,6 @@ static struct rtable *tunnel_rtable_get(struct ip_tunnel *t, u32 cookie)
         return (struct rtable *)dst;
 }
 
-/* Often modified stats are per cpu, other are shared (netdev->stats) */
-struct rtnl_link_stats64 *ip_tunnel_get_stats64(struct net_device *dev,
-                                                struct rtnl_link_stats64 *tot)
-{
-        int i;
-
-        for_each_possible_cpu(i) {
-                const struct pcpu_sw_netstats *tstats =
-                                                   per_cpu_ptr(dev->tstats, i);
-                u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
-                unsigned int start;
-
-                do {
-                        start = u64_stats_fetch_begin_bh(&tstats->syncp);
-                        rx_packets = tstats->rx_packets;
-                        tx_packets = tstats->tx_packets;
-                        rx_bytes = tstats->rx_bytes;
-                        tx_bytes = tstats->tx_bytes;
-                } while (u64_stats_fetch_retry_bh(&tstats->syncp, start));
-
-                tot->rx_packets += rx_packets;
-                tot->tx_packets += tx_packets;
-                tot->rx_bytes   += rx_bytes;
-                tot->tx_bytes   += tx_bytes;
-        }
-
-        tot->multicast = dev->stats.multicast;
-
-        tot->rx_crc_errors = dev->stats.rx_crc_errors;
-        tot->rx_fifo_errors = dev->stats.rx_fifo_errors;
-        tot->rx_length_errors = dev->stats.rx_length_errors;
-        tot->rx_frame_errors = dev->stats.rx_frame_errors;
-        tot->rx_errors = dev->stats.rx_errors;
-
-        tot->tx_fifo_errors = dev->stats.tx_fifo_errors;
-        tot->tx_carrier_errors = dev->stats.tx_carrier_errors;
-        tot->tx_dropped = dev->stats.tx_dropped;
-        tot->tx_aborted_errors = dev->stats.tx_aborted_errors;
-        tot->tx_errors = dev->stats.tx_errors;
-
-        tot->collisions  = dev->stats.collisions;
-
-        return tot;
-}
-EXPORT_SYMBOL_GPL(ip_tunnel_get_stats64);
-
 static bool ip_tunnel_key_match(const struct ip_tunnel_parm *p,
                                 __be16 flags, __be32 key)
 {
@@ -759,7 +714,7 @@ static void ip_tunnel_update(struct ip_tunnel_net *itn,
                 if (set_mtu)
                         dev->mtu = mtu;
         }
-        tunnel_dst_reset_all(t);
+        ip_tunnel_dst_reset_all(t);
         netdev_state_change(dev);
 }
 
@@ -1088,7 +1043,7 @@ void ip_tunnel_uninit(struct net_device *dev)
         if (itn->fb_tunnel_dev != dev)
                 ip_tunnel_del(netdev_priv(dev));
 
-        tunnel_dst_reset_all(tunnel);
+        ip_tunnel_dst_reset_all(tunnel);
 }
 EXPORT_SYMBOL_GPL(ip_tunnel_uninit);
 
diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c
index 6156f4ef5e91..6f847dd56dbc 100644
--- a/net/ipv4/ip_tunnel_core.c
+++ b/net/ipv4/ip_tunnel_core.c
@@ -108,7 +108,6 @@ int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto)
         nf_reset(skb);
         secpath_reset(skb);
         skb_clear_hash_if_not_l4(skb);
-        skb_dst_drop(skb);
         skb->vlan_tci = 0;
         skb_set_queue_mapping(skb, 0);
         skb->pkt_type = PACKET_HOST;
@@ -148,3 +147,49 @@ error:
         return ERR_PTR(err);
 }
 EXPORT_SYMBOL_GPL(iptunnel_handle_offloads);
+
+/* Often modified stats are per cpu, other are shared (netdev->stats) */
+struct rtnl_link_stats64 *ip_tunnel_get_stats64(struct net_device *dev,
+                                                struct rtnl_link_stats64 *tot)
+{
+        int i;
+
+        for_each_possible_cpu(i) {
+                const struct pcpu_sw_netstats *tstats =
+                                                   per_cpu_ptr(dev->tstats, i);
+                u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
+                unsigned int start;
+
+                do {
+                        start = u64_stats_fetch_begin_bh(&tstats->syncp);
+                        rx_packets = tstats->rx_packets;
+                        tx_packets = tstats->tx_packets;
+                        rx_bytes = tstats->rx_bytes;
+                        tx_bytes = tstats->tx_bytes;
+                } while (u64_stats_fetch_retry_bh(&tstats->syncp, start));
+
+                tot->rx_packets += rx_packets;
+                tot->tx_packets += tx_packets;
+                tot->rx_bytes   += rx_bytes;
+                tot->tx_bytes   += tx_bytes;
+        }
+
+        tot->multicast = dev->stats.multicast;
+
+        tot->rx_crc_errors = dev->stats.rx_crc_errors;
+        tot->rx_fifo_errors = dev->stats.rx_fifo_errors;
+        tot->rx_length_errors = dev->stats.rx_length_errors;
+        tot->rx_frame_errors = dev->stats.rx_frame_errors;
+        tot->rx_errors = dev->stats.rx_errors;
+
+        tot->tx_fifo_errors = dev->stats.tx_fifo_errors;
+        tot->tx_carrier_errors = dev->stats.tx_carrier_errors;
+        tot->tx_dropped = dev->stats.tx_dropped;
+        tot->tx_aborted_errors = dev->stats.tx_aborted_errors;
+        tot->tx_errors = dev->stats.tx_errors;
+
+        tot->collisions  = dev->stats.collisions;
+
+        return tot;
+}
+EXPORT_SYMBOL_GPL(ip_tunnel_get_stats64);
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index efa1138fa523..b3e86ea7b71b 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -273,7 +273,7 @@ static int __init ic_open_devs(void)
 
                 msleep(1);
 
-                if time_before(jiffies, next_msg)
+                if (time_before(jiffies, next_msg))
                         continue;
 
                 elapsed = jiffies_to_msecs(jiffies - start);
diff --git a/net/ipv4/netfilter/nf_nat_snmp_basic.c b/net/ipv4/netfilter/nf_nat_snmp_basic.c
index d551e31b416e..7c676671329d 100644
--- a/net/ipv4/netfilter/nf_nat_snmp_basic.c
+++ b/net/ipv4/netfilter/nf_nat_snmp_basic.c
@@ -1198,8 +1198,8 @@ static int snmp_translate(struct nf_conn *ct,
                 map.to = NOCT1(&ct->tuplehash[!dir].tuple.dst.u3.ip);
         } else {
                 /* DNAT replies */
-                map.from = NOCT1(&ct->tuplehash[dir].tuple.src.u3.ip);
-                map.to = NOCT1(&ct->tuplehash[!dir].tuple.dst.u3.ip);
+                map.from = NOCT1(&ct->tuplehash[!dir].tuple.src.u3.ip);
+                map.to = NOCT1(&ct->tuplehash[dir].tuple.dst.u3.ip);
         }
 
         if (map.from == map.to)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 25071b48921c..4c011ec69ed4 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1597,6 +1597,7 @@ static int __mkroute_input(struct sk_buff *skb,
         rth->rt_gateway = 0;
         rth->rt_uses_gateway = 0;
         INIT_LIST_HEAD(&rth->rt_uncached);
+        RT_CACHE_STAT_INC(in_slow_tot);
 
         rth->dst.input = ip_forward;
         rth->dst.output = ip_output;
@@ -1695,10 +1696,11 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
         fl4.daddr = daddr;
         fl4.saddr = saddr;
         err = fib_lookup(net, &fl4, &res);
-        if (err != 0)
+        if (err != 0) {
+                if (!IN_DEV_FORWARD(in_dev))
+                        err = -EHOSTUNREACH;
                 goto no_route;
-
-        RT_CACHE_STAT_INC(in_slow_tot);
+        }
 
         if (res.type == RTN_BROADCAST)
                 goto brd_input;
@@ -1712,8 +1714,10 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
                 goto local_input;
         }
 
-        if (!IN_DEV_FORWARD(in_dev))
+        if (!IN_DEV_FORWARD(in_dev)) {
+                err = -EHOSTUNREACH;
                 goto no_route;
+        }
         if (res.type != RTN_UNICAST)
                 goto martian_destination;
 
@@ -1768,6 +1772,7 @@ local_input:
         rth->rt_gateway = 0;
         rth->rt_uses_gateway = 0;
         INIT_LIST_HEAD(&rth->rt_uncached);
+        RT_CACHE_STAT_INC(in_slow_tot);
         if (res.type == RTN_UNREACHABLE) {
                 rth->dst.input= ip_error;
                 rth->dst.error= -err;
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 9f3a2db9109e..97c8f5620c43 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1044,7 +1044,8 @@ void tcp_free_fastopen_req(struct tcp_sock *tp)
         }
 }
 
-static int tcp_sendmsg_fastopen(struct sock *sk, struct msghdr *msg, int *size)
+static int tcp_sendmsg_fastopen(struct sock *sk, struct msghdr *msg,
+                                int *copied, size_t size)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         int err, flags;
@@ -1059,11 +1060,12 @@ static int tcp_sendmsg_fastopen(struct sock *sk, struct msghdr *msg, int *size)
         if (unlikely(tp->fastopen_req == NULL))
                 return -ENOBUFS;
         tp->fastopen_req->data = msg;
+        tp->fastopen_req->size = size;
 
         flags = (msg->msg_flags & MSG_DONTWAIT) ? O_NONBLOCK : 0;
         err = __inet_stream_connect(sk->sk_socket, msg->msg_name,
                                     msg->msg_namelen, flags);
-        *size = tp->fastopen_req->copied;
+        *copied = tp->fastopen_req->copied;
         tcp_free_fastopen_req(tp);
         return err;
 }
@@ -1083,7 +1085,7 @@ int tcp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 
         flags = msg->msg_flags;
         if (flags & MSG_FASTOPEN) {
-                err = tcp_sendmsg_fastopen(sk, msg, &copied_syn);
+                err = tcp_sendmsg_fastopen(sk, msg, &copied_syn, size);
                 if (err == -EINPROGRESS && copied_syn > 0)
                         goto out;
                 else if (err)
diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c
index ad37bf18ae4b..2388275adb9b 100644
--- a/net/ipv4/tcp_cong.c
+++ b/net/ipv4/tcp_cong.c
@@ -290,8 +290,7 @@ bool tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight)
         left = tp->snd_cwnd - in_flight;
         if (sk_can_gso(sk) &&
             left * sysctl_tcp_tso_win_divisor < tp->snd_cwnd &&
-            left * tp->mss_cache < sk->sk_gso_max_size &&
-            left < sk->sk_gso_max_segs)
+            left < tp->xmit_size_goal_segs)
                 return true;
         return left <= tcp_max_tso_deferred_mss(tp);
 }
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 227cba79fa6b..eeaac399420d 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -1945,8 +1945,9 @@ void tcp_enter_loss(struct sock *sk, int how)
                 if (skb == tcp_send_head(sk))
                         break;
 
-                if (TCP_SKB_CB(skb)->sacked & TCPCB_RETRANS)
+                if (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_RETRANS)
                         tp->undo_marker = 0;
+
                 TCP_SKB_CB(skb)->sacked &= (~TCPCB_TAGBITS)|TCPCB_SACKED_ACKED;
                 if (!(TCP_SKB_CB(skb)->sacked&TCPCB_SACKED_ACKED) || how) {
                         TCP_SKB_CB(skb)->sacked &= ~TCPCB_SACKED_ACKED;
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 3be16727f058..f0eb4e337ec8 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -864,8 +864,8 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
 
                 if (unlikely(skb->fclone == SKB_FCLONE_ORIG &&
                              fclone->fclone == SKB_FCLONE_CLONE))
-                        NET_INC_STATS_BH(sock_net(sk),
-                                         LINUX_MIB_TCPSPURIOUS_RTX_HOSTQUEUES);
+                        NET_INC_STATS(sock_net(sk),
+                                      LINUX_MIB_TCPSPURIOUS_RTX_HOSTQUEUES);
 
                 if (unlikely(skb_cloned(skb)))
                         skb = pskb_copy(skb, gfp_mask);
@@ -2337,6 +2337,7 @@ int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
         struct tcp_sock *tp = tcp_sk(sk);
         struct inet_connection_sock *icsk = inet_csk(sk);
         unsigned int cur_mss;
+        int err;
 
         /* Inconslusive MTU probe */
         if (icsk->icsk_mtup.probe_size) {
@@ -2400,11 +2401,15 @@ int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
                      skb_headroom(skb) >= 0xFFFF)) {
                 struct sk_buff *nskb = __pskb_copy(skb, MAX_TCP_HEADER,
                                                    GFP_ATOMIC);
-                return nskb ? tcp_transmit_skb(sk, nskb, 0, GFP_ATOMIC) :
-                              -ENOBUFS;
+                err = nskb ? tcp_transmit_skb(sk, nskb, 0, GFP_ATOMIC) :
+                             -ENOBUFS;
         } else {
-                return tcp_transmit_skb(sk, skb, 1, GFP_ATOMIC);
+                err = tcp_transmit_skb(sk, skb, 1, GFP_ATOMIC);
         }
+
+        if (likely(!err))
+                TCP_SKB_CB(skb)->sacked |= TCPCB_EVER_RETRANS;
+        return err;
 }
 
 int tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
@@ -2908,7 +2913,12 @@ static int tcp_send_syn_data(struct sock *sk, struct sk_buff *syn)
         space = __tcp_mtu_to_mss(sk, inet_csk(sk)->icsk_pmtu_cookie) -
                 MAX_TCP_OPTION_SPACE;
 
-        syn_data = skb_copy_expand(syn, skb_headroom(syn), space,
+        space = min_t(size_t, space, fo->size);
+
+        /* limit to order-0 allocations */
+        space = min_t(size_t, space, SKB_MAX_HEAD(MAX_TCP_HEADER));
+
+        syn_data = skb_copy_expand(syn, MAX_TCP_HEADER, space,
                                    sk->sk_allocation);
         if (syn_data == NULL)
                 goto fallback;
diff --git a/net/ipv6/Kconfig b/net/ipv6/Kconfig
index d92e5586783e..438a73aa777c 100644
--- a/net/ipv6/Kconfig
+++ b/net/ipv6/Kconfig
@@ -138,6 +138,7 @@ config INET6_XFRM_MODE_ROUTEOPTIMIZATION
 config IPV6_VTI
 tristate "Virtual (secure) IPv6: tunneling"
         select IPV6_TUNNEL
+        select NET_IP_TUNNEL
         depends on INET6_XFRM_MODE_TUNNEL
         ---help---
         Tunneling means encapsulating data of one protocol type within
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index ad235690684c..fdbfeca36d63 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2783,6 +2783,8 @@ static void addrconf_gre_config(struct net_device *dev)
         ipv6_addr_set(&addr,  htonl(0xFE800000), 0, 0, 0);
         if (!ipv6_generate_eui64(addr.s6_addr + 8, dev))
                 addrconf_add_linklocal(idev, &addr);
+        else
+                addrconf_prefix_route(&addr, 64, dev, 0, 0);
 }
 #endif
 
diff --git a/net/ipv6/exthdrs_core.c b/net/ipv6/exthdrs_core.c
index 140748debc4a..8af3eb57f438 100644
--- a/net/ipv6/exthdrs_core.c
+++ b/net/ipv6/exthdrs_core.c
@@ -212,7 +212,7 @@ int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
                 found = (nexthdr == target);
 
                 if ((!ipv6_ext_hdr(nexthdr)) || nexthdr == NEXTHDR_NONE) {
-                        if (target < 0)
+                        if (target < 0 || found)
                                 break;
                         return -ENOENT;
                 }
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index 1e8683b135bb..59f95affceb0 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -89,7 +89,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
         unsigned int unfrag_ip6hlen;
         u8 *prevhdr;
         int offset = 0;
-        bool tunnel;
+        bool encap, udpfrag;
         int nhoff;
 
         if (unlikely(skb_shinfo(skb)->gso_type &
@@ -110,8 +110,8 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
         if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
                 goto out;
 
-        tunnel = SKB_GSO_CB(skb)->encap_level > 0;
-        if (tunnel)
+        encap = SKB_GSO_CB(skb)->encap_level > 0;
+        if (encap)
                 features = skb->dev->hw_enc_features & netif_skb_features(skb);
         SKB_GSO_CB(skb)->encap_level += sizeof(*ipv6h);
 
@@ -121,6 +121,12 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
 
         proto = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
 
+        if (skb->encapsulation &&
+            skb_shinfo(skb)->gso_type & (SKB_GSO_SIT|SKB_GSO_IPIP))
+                udpfrag = proto == IPPROTO_UDP && encap;
+        else
+                udpfrag = proto == IPPROTO_UDP && !skb->encapsulation;
+
         ops = rcu_dereference(inet6_offloads[proto]);
         if (likely(ops && ops->callbacks.gso_segment)) {
                 skb_reset_transport_header(skb);
@@ -133,13 +139,9 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
         for (skb = segs; skb; skb = skb->next) {
                 ipv6h = (struct ipv6hdr *)(skb_mac_header(skb) + nhoff);
                 ipv6h->payload_len = htons(skb->len - nhoff - sizeof(*ipv6h));
-                if (tunnel) {
-                        skb_reset_inner_headers(skb);
-                        skb->encapsulation = 1;
-                }
                 skb->network_header = (u8 *)ipv6h - skb->head;
 
-                if (!tunnel && proto == IPPROTO_UDP) {
+                if (udpfrag) {
                         unfrag_ip6hlen = ip6_find_1stfragopt(skb, &prevhdr);
                         fptr = (struct frag_hdr *)((u8 *)ipv6h + unfrag_ip6hlen);
                         fptr->frag_off = htons(offset);
@@ -148,6 +150,8 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
                         offset += (ntohs(ipv6h->payload_len) -
                                    sizeof(struct frag_hdr));
                 }
+                if (encap)
+                        skb_reset_inner_headers(skb);
         }
 
 out:
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index ef02b26ccf81..16f91a2e7888 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -342,6 +342,20 @@ static unsigned int ip6_dst_mtu_forward(const struct dst_entry *dst)
         return mtu;
 }
 
+static bool ip6_pkt_too_big(const struct sk_buff *skb, unsigned int mtu)
+{
+        if (skb->len <= mtu || skb->local_df)
+                return false;
+
+        if (IP6CB(skb)->frag_max_size && IP6CB(skb)->frag_max_size > mtu)
+                return true;
+
+        if (skb_is_gso(skb) && skb_gso_network_seglen(skb) <= mtu)
+                return false;
+
+        return true;
+}
+
 int ip6_forward(struct sk_buff *skb)
 {
         struct dst_entry *dst = skb_dst(skb);
@@ -466,8 +480,7 @@ int ip6_forward(struct sk_buff *skb)
         if (mtu < IPV6_MIN_MTU)
                 mtu = IPV6_MIN_MTU;
 
-        if ((!skb->local_df && skb->len > mtu && !skb_is_gso(skb)) ||
-            (IP6CB(skb)->frag_max_size && IP6CB(skb)->frag_max_size > mtu)) {
+        if (ip6_pkt_too_big(skb, mtu)) {
                 /* Again, force OUTPUT device used as source address */
                 skb->dev = dst->dev;
                 icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
@@ -517,9 +530,6 @@ static void ip6_copy_metadata(struct sk_buff *to, struct sk_buff *from)
         to->tc_index = from->tc_index;
 #endif
         nf_copy(to, from);
-#if IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TRACE)
-        to->nf_trace = from->nf_trace;
-#endif
         skb_copy_secmark(to, from);
 }
 
diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c
index fb9beb78f00b..587bbdcb22b4 100644
--- a/net/ipv6/ping.c
+++ b/net/ipv6/ping.c
@@ -135,6 +135,7 @@ int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
         fl6.flowi6_proto = IPPROTO_ICMPV6;
         fl6.saddr = np->saddr;
         fl6.daddr = *daddr;
+        fl6.flowi6_mark = sk->sk_mark;
         fl6.fl6_icmp_type = user_icmph.icmp6_type;
         fl6.fl6_icmp_code = user_icmph.icmp6_code;
         security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 3dfbcf1dcb1c..b4d74c86586c 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -475,6 +475,7 @@ static void ipip6_tunnel_uninit(struct net_device *dev)
                 ipip6_tunnel_unlink(sitn, tunnel);
                 ipip6_tunnel_del_prl(tunnel, NULL);
         }
+        ip_tunnel_dst_reset_all(tunnel);
         dev_put(dev);
 }
 
@@ -1082,6 +1083,7 @@ static void ipip6_tunnel_update(struct ip_tunnel *t, struct ip_tunnel_parm *p)
                 t->parms.link = p->link;
                 ipip6_tunnel_bind_dev(t->dev);
         }
+        ip_tunnel_dst_reset_all(t);
         netdev_state_change(t->dev);
 }
 
@@ -1112,6 +1114,7 @@ static int ipip6_tunnel_update_6rd(struct ip_tunnel *t,
         t->ip6rd.relay_prefix = relay_prefix;
         t->ip6rd.prefixlen = ip6rd->prefixlen;
         t->ip6rd.relay_prefixlen = ip6rd->relay_prefixlen;
+        ip_tunnel_dst_reset_all(t);
         netdev_state_change(t->dev);
         return 0;
 }
@@ -1271,6 +1274,7 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
                         err = ipip6_tunnel_add_prl(t, &prl, cmd == SIOCCHGPRL);
                         break;
                 }
+                ip_tunnel_dst_reset_all(t);
                 netdev_state_change(dev);
                 break;
 
@@ -1326,6 +1330,9 @@ static const struct net_device_ops ipip6_netdev_ops = {
 
 static void ipip6_dev_free(struct net_device *dev)
 {
+        struct ip_tunnel *tunnel = netdev_priv(dev);
+
+        free_percpu(tunnel->dst_cache);
         free_percpu(dev->tstats);
         free_netdev(dev);
 }
@@ -1375,6 +1382,12 @@ static int ipip6_tunnel_init(struct net_device *dev)
                 u64_stats_init(&ipip6_tunnel_stats->syncp);
         }
 
+        tunnel->dst_cache = alloc_percpu(struct ip_tunnel_dst);
+        if (!tunnel->dst_cache) {
+                free_percpu(dev->tstats);
+                return -ENOMEM;
+        }
+
         return 0;
 }
 
@@ -1405,6 +1418,12 @@ static int __net_init ipip6_fb_tunnel_init(struct net_device *dev)
                 u64_stats_init(&ipip6_fb_stats->syncp);
         }
 
+        tunnel->dst_cache = alloc_percpu(struct ip_tunnel_dst);
+        if (!tunnel->dst_cache) {
+                free_percpu(dev->tstats);
+                return -ENOMEM;
+        }
+
         dev_hold(dev);
         rcu_assign_pointer(sitn->tunnels_wc[0], tunnel);
         return 0;
diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c
index e7359f9eaa8d..b261ee8b83fc 100644
--- a/net/ipv6/udp_offload.c
+++ b/net/ipv6/udp_offload.c
@@ -113,7 +113,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
                 fptr = (struct frag_hdr *)(skb_network_header(skb) + unfrag_ip6hlen);
                 fptr->nexthdr = nexthdr;
                 fptr->reserved = 0;
-                ipv6_select_ident(fptr, (struct rt6_info *)skb_dst(skb));
+                fptr->identification = skb_shinfo(skb)->ip6_frag_id;
 
                 /* Fragment the skb. ipv6 header and the remaining fields of the
                  * fragment header are updated in ipv6_gso_segment()
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 3701930c6649..5e44e3179e02 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1692,14 +1692,8 @@ void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
 void ieee80211_add_pending_skb(struct ieee80211_local *local,
                                struct sk_buff *skb);
-void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
-                                   struct sk_buff_head *skbs,
-                                   void (*fn)(void *data), void *data);
-static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
-                                              struct sk_buff_head *skbs)
-{
-        ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
-}
+void ieee80211_add_pending_skbs(struct ieee80211_local *local,
+                                struct sk_buff_head *skbs);
 void ieee80211_flush_queues(struct ieee80211_local *local,
                             struct ieee80211_sub_if_data *sdata);
 
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index d6d1f1df9119..ce1c44370610 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1057,7 +1057,8 @@ static void ieee80211_uninit(struct net_device *dev)
 
 static u16 ieee80211_netdev_select_queue(struct net_device *dev,
                                          struct sk_buff *skb,
-                                         void *accel_priv)
+                                         void *accel_priv,
+                                         select_queue_fallback_t fallback)
 {
         return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb);
 }
@@ -1075,7 +1076,8 @@ static const struct net_device_ops ieee80211_dataif_ops = {
 
 static u16 ieee80211_monitor_select_queue(struct net_device *dev,
                                           struct sk_buff *skb,
-                                          void *accel_priv)
+                                          void *accel_priv,
+                                          select_queue_fallback_t fallback)
 {
         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
         struct ieee80211_local *local = sdata->local;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index fc1d82465b3c..245dce969b31 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -222,6 +222,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
         switch (vht_oper->chan_width) {
         case IEEE80211_VHT_CHANWIDTH_USE_HT:
                 vht_chandef.width = chandef->width;
+                vht_chandef.center_freq1 = chandef->center_freq1;
                 break;
         case IEEE80211_VHT_CHANWIDTH_80MHZ:
                 vht_chandef.width = NL80211_CHAN_WIDTH_80;
@@ -271,6 +272,28 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
         ret = 0;
 
 out:
+        /*
+         * When tracking the current AP, don't do any further checks if the
+         * new chandef is identical to the one we're currently using for the
+         * connection. This keeps us from playing ping-pong with regulatory,
+         * without it the following can happen (for example):
+         *  - connect to an AP with 80 MHz, world regdom allows 80 MHz
+         *  - AP advertises regdom US
+         *  - CRDA loads regdom US with 80 MHz prohibited (old database)
+         *  - the code below detects an unsupported channel, downgrades, and
+         *    we disconnect from the AP in the caller
+         *  - disconnect causes CRDA to reload world regdomain and the game
+         *    starts anew.
+         * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
+         *
+         * It seems possible that there are still scenarios with CSA or real
+         * bandwidth changes where a this could happen, but those cases are
+         * less common and wouldn't completely prevent using the AP.
+         */
+        if (tracking &&
+            cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
+                return ret;
+
         /* don't print the message below for VHT mismatch if VHT is disabled */
         if (ret & IEEE80211_STA_DISABLE_VHT)
                 vht_chandef = *chandef;
@@ -3753,6 +3776,7 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
                 if (WARN_ON(!chanctx_conf)) {
                         rcu_read_unlock();
+                        sta_info_free(local, new_sta);
                         return -EINVAL;
                 }
                 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index c24ca0d0f469..3e57f96c9666 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1128,6 +1128,13 @@ static void sta_ps_end(struct sta_info *sta)
                sta->sta.addr, sta->sta.aid);
 
         if (test_sta_flag(sta, WLAN_STA_PS_DRIVER)) {
+                /*
+                 * Clear the flag only if the other one is still set
+                 * so that the TX path won't start TX'ing new frames
+                 * directly ... In the case that the driver flag isn't
+                 * set ieee80211_sta_ps_deliver_wakeup() will clear it.
+                 */
+                clear_sta_flag(sta, WLAN_STA_PS_STA);
                 ps_dbg(sta->sdata, "STA %pM aid %d driver-ps-blocked\n",
                        sta->sta.addr, sta->sta.aid);
                 return;
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index decd30c1e290..a023b432143b 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -91,7 +91,7 @@ static int sta_info_hash_del(struct ieee80211_local *local,
         return -ENOENT;
 }
 
-static void cleanup_single_sta(struct sta_info *sta)
+static void __cleanup_single_sta(struct sta_info *sta)
 {
         int ac, i;
         struct tid_ampdu_tx *tid_tx;
@@ -99,7 +99,8 @@ static void cleanup_single_sta(struct sta_info *sta)
         struct ieee80211_local *local = sdata->local;
         struct ps_data *ps;
 
-        if (test_sta_flag(sta, WLAN_STA_PS_STA)) {
+        if (test_sta_flag(sta, WLAN_STA_PS_STA) ||
+            test_sta_flag(sta, WLAN_STA_PS_DRIVER)) {
                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
                     sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
                         ps = &sdata->bss->ps;
@@ -109,6 +110,7 @@ static void cleanup_single_sta(struct sta_info *sta)
                         return;
 
                 clear_sta_flag(sta, WLAN_STA_PS_STA);
+                clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
 
                 atomic_dec(&ps->num_sta_ps);
                 sta_info_recalc_tim(sta);
@@ -139,7 +141,14 @@ static void cleanup_single_sta(struct sta_info *sta)
                 ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending);
                 kfree(tid_tx);
         }
+}
 
+static void cleanup_single_sta(struct sta_info *sta)
+{
+        struct ieee80211_sub_if_data *sdata = sta->sdata;
+        struct ieee80211_local *local = sdata->local;
+
+        __cleanup_single_sta(sta);
         sta_info_free(local, sta);
 }
 
@@ -330,6 +339,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
         rcu_read_unlock();
 
         spin_lock_init(&sta->lock);
+        spin_lock_init(&sta->ps_lock);
         INIT_WORK(&sta->drv_unblock_wk, sta_unblock);
         INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work);
         mutex_init(&sta->ampdu_mlme.mtx);
@@ -487,21 +497,26 @@ static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
                 goto out_err;
         }
 
-        /* notify driver */
-        err = sta_info_insert_drv_state(local, sdata, sta);
-        if (err)
-                goto out_err;
-
         local->num_sta++;
         local->sta_generation++;
         smp_mb();
 
+        /* simplify things and don't accept BA sessions yet */
+        set_sta_flag(sta, WLAN_STA_BLOCK_BA);
+
         /* make the station visible */
         sta_info_hash_add(local, sta);
 
         list_add_rcu(&sta->list, &local->sta_list);
 
+        /* notify driver */
+        err = sta_info_insert_drv_state(local, sdata, sta);
+        if (err)
+                goto out_remove;
+
         set_sta_flag(sta, WLAN_STA_INSERTED);
+        /* accept BA sessions now */
+        clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
 
         ieee80211_recalc_min_chandef(sdata);
         ieee80211_sta_debugfs_add(sta);
@@ -522,6 +537,12 @@ static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
                 mesh_accept_plinks_update(sdata);
 
         return 0;
+ out_remove:
+        sta_info_hash_del(local, sta);
+        list_del_rcu(&sta->list);
+        local->num_sta--;
+        synchronize_net();
+        __cleanup_single_sta(sta);
  out_err:
         mutex_unlock(&local->sta_mtx);
         rcu_read_lock();
@@ -1071,10 +1092,14 @@ struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif,
 }
 EXPORT_SYMBOL(ieee80211_find_sta);
 
-static void clear_sta_ps_flags(void *_sta)
+/* powersave support code */
+void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
 {
-        struct sta_info *sta = _sta;
         struct ieee80211_sub_if_data *sdata = sta->sdata;
+        struct ieee80211_local *local = sdata->local;
+        struct sk_buff_head pending;
+        int filtered = 0, buffered = 0, ac;
+        unsigned long flags;
         struct ps_data *ps;
 
         if (sdata->vif.type == NL80211_IFTYPE_AP ||
@@ -1085,20 +1110,6 @@ static void clear_sta_ps_flags(void *_sta)
         else
                 return;
 
-        clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
-        if (test_and_clear_sta_flag(sta, WLAN_STA_PS_STA))
-                atomic_dec(&ps->num_sta_ps);
-}
-
-/* powersave support code */
-void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
-{
-        struct ieee80211_sub_if_data *sdata = sta->sdata;
-        struct ieee80211_local *local = sdata->local;
-        struct sk_buff_head pending;
-        int filtered = 0, buffered = 0, ac;
-        unsigned long flags;
-
         clear_sta_flag(sta, WLAN_STA_SP);
 
         BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1);
@@ -1109,6 +1120,8 @@ void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
 
         skb_queue_head_init(&pending);
 
+        /* sync with ieee80211_tx_h_unicast_ps_buf */
+        spin_lock(&sta->ps_lock);
         /* Send all buffered frames to the station */
         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
                 int count = skb_queue_len(&pending), tmp;
@@ -1127,7 +1140,12 @@ void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
                 buffered += tmp - count;
         }
 
-        ieee80211_add_pending_skbs_fn(local, &pending, clear_sta_ps_flags, sta);
+        ieee80211_add_pending_skbs(local, &pending);
+        clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
+        clear_sta_flag(sta, WLAN_STA_PS_STA);
+        spin_unlock(&sta->ps_lock);
+
+        atomic_dec(&ps->num_sta_ps);
 
         /* This station just woke up and isn't aware of our SMPS state */
         if (!ieee80211_smps_is_restrictive(sta->known_smps_mode,
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index d77ff7090630..d3a6d8208f2f 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -267,6 +267,7 @@ struct ieee80211_tx_latency_stat {
  * @drv_unblock_wk: used for driver PS unblocking
  * @listen_interval: listen interval of this station, when we're acting as AP
  * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly
+ * @ps_lock: used for powersave (when mac80211 is the AP) related locking
  * @ps_tx_buf: buffers (per AC) of frames to transmit to this station
  *      when it leaves power saving state or polls
  * @tx_filtered: buffers (per AC) of frames we already tried to
@@ -356,10 +357,8 @@ struct sta_info {
         /* use the accessors defined below */
         unsigned long _flags;
 
-        /*
-         * STA powersave frame queues, no more than the internal
-         * locking required.
-         */
+        /* STA powersave lock and frame queues */
+        spinlock_t ps_lock;
         struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS];
         struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS];
         unsigned long driver_buffered_tids;
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 97a02d3f7d87..4080c615636f 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -478,6 +478,20 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
                        sta->sta.addr, sta->sta.aid, ac);
                 if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
                         purge_old_ps_buffers(tx->local);
+
+                /* sync with ieee80211_sta_ps_deliver_wakeup */
+                spin_lock(&sta->ps_lock);
+                /*
+                 * STA woke up the meantime and all the frames on ps_tx_buf have
+                 * been queued to pending queue. No reordering can happen, go
+                 * ahead and Tx the packet.
+                 */
+                if (!test_sta_flag(sta, WLAN_STA_PS_STA) &&
+                    !test_sta_flag(sta, WLAN_STA_PS_DRIVER)) {
+                        spin_unlock(&sta->ps_lock);
+                        return TX_CONTINUE;
+                }
+
                 if (skb_queue_len(&sta->ps_tx_buf[ac]) >= STA_MAX_TX_BUFFER) {
                         struct sk_buff *old = skb_dequeue(&sta->ps_tx_buf[ac]);
                         ps_dbg(tx->sdata,
@@ -492,6 +506,7 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
                 info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
                 info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS;
                 skb_queue_tail(&sta->ps_tx_buf[ac], tx->skb);
+                spin_unlock(&sta->ps_lock);
 
                 if (!timer_pending(&local->sta_cleanup))
                         mod_timer(&local->sta_cleanup,
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 676dc0967f37..b8700d417a9c 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -435,9 +435,8 @@ void ieee80211_add_pending_skb(struct ieee80211_local *local,
         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 }
 
-void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
-                                   struct sk_buff_head *skbs,
-                                   void (*fn)(void *data), void *data)
+void ieee80211_add_pending_skbs(struct ieee80211_local *local,
+                                struct sk_buff_head *skbs)
 {
         struct ieee80211_hw *hw = &local->hw;
         struct sk_buff *skb;
@@ -461,9 +460,6 @@ void ieee80211_add_pending_skbs_fn(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);
@@ -1741,6 +1737,26 @@ int ieee80211_reconfig(struct ieee80211_local *local)
                                         IEEE80211_QUEUE_STOP_REASON_SUSPEND);
 
         /*
+         * Reconfigure sched scan if it was interrupted by FW restart or
+         * suspend.
+         */
+        mutex_lock(&local->mtx);
+        sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
+                                                lockdep_is_held(&local->mtx));
+        if (sched_scan_sdata && local->sched_scan_req)
+                /*
+                 * Sched scan stopped, but we don't want to report it. Instead,
+                 * we're trying to reschedule.
+                 */
+                if (__ieee80211_request_sched_scan_start(sched_scan_sdata,
+                                                         local->sched_scan_req))
+                        sched_scan_stopped = true;
+        mutex_unlock(&local->mtx);
+
+        if (sched_scan_stopped)
+                cfg80211_sched_scan_stopped(local->hw.wiphy);
+
+        /*
          * If this is for hw restart things are still running.
          * We may want to change that later, however.
          */
@@ -1768,26 +1784,6 @@ int ieee80211_reconfig(struct ieee80211_local *local)
         WARN_ON(1);
 #endif
 
-        /*
-         * Reconfigure sched scan if it was interrupted by FW restart or
-         * suspend.
-         */
-        mutex_lock(&local->mtx);
-        sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
-                                                lockdep_is_held(&local->mtx));
-        if (sched_scan_sdata && local->sched_scan_req)
-                /*
-                 * Sched scan stopped, but we don't want to report it. Instead,
-                 * we're trying to reschedule.
-                 */
-                if (__ieee80211_request_sched_scan_start(sched_scan_sdata,
-                                                         local->sched_scan_req))
-                        sched_scan_stopped = true;
-        mutex_unlock(&local->mtx);
-
-        if (sched_scan_stopped)
-                cfg80211_sched_scan_stopped(local->hw.wiphy);
-
         return 0;
 }
 
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 21211c60ca98..d51422c778de 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -154,6 +154,11 @@ u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
                 return IEEE80211_AC_BE;
         }
 
+        if (skb->protocol == sdata->control_port_protocol) {
+                skb->priority = 7;
+                return ieee80211_downgrade_queue(sdata, skb);
+        }
+
         /* use the data classifier to determine what 802.1d tag the
          * data frame has */
         rcu_read_lock();
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index bb322d0beb48..b9f0e0374322 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -1310,27 +1310,22 @@ ctnetlink_change_status(struct nf_conn *ct, const struct nlattr * const cda[])
 }
 
 static int
-ctnetlink_change_nat(struct nf_conn *ct, const struct nlattr * const cda[])
+ctnetlink_setup_nat(struct nf_conn *ct, const struct nlattr * const cda[])
 {
 #ifdef CONFIG_NF_NAT_NEEDED
         int ret;
 
-        if (cda[CTA_NAT_DST]) {
-                ret = ctnetlink_parse_nat_setup(ct,
-                                                NF_NAT_MANIP_DST,
-                                                cda[CTA_NAT_DST]);
-                if (ret < 0)
-                        return ret;
-        }
-        if (cda[CTA_NAT_SRC]) {
-                ret = ctnetlink_parse_nat_setup(ct,
-                                                NF_NAT_MANIP_SRC,
-                                                cda[CTA_NAT_SRC]);
-                if (ret < 0)
-                        return ret;
-        }
-        return 0;
+        ret = ctnetlink_parse_nat_setup(ct, NF_NAT_MANIP_DST,
+                                        cda[CTA_NAT_DST]);
+        if (ret < 0)
+                return ret;
+
+        ret = ctnetlink_parse_nat_setup(ct, NF_NAT_MANIP_SRC,
+                                        cda[CTA_NAT_SRC]);
+        return ret;
 #else
+        if (!cda[CTA_NAT_DST] && !cda[CTA_NAT_SRC])
+                return 0;
         return -EOPNOTSUPP;
 #endif
 }
@@ -1659,11 +1654,9 @@ ctnetlink_create_conntrack(struct net *net, u16 zone,
                         goto err2;
         }
 
-        if (cda[CTA_NAT_SRC] || cda[CTA_NAT_DST]) {
-                err = ctnetlink_change_nat(ct, cda);
-                if (err < 0)
-                        goto err2;
-        }
+        err = ctnetlink_setup_nat(ct, cda);
+        if (err < 0)
+                goto err2;
 
         nf_ct_acct_ext_add(ct, GFP_ATOMIC);
         nf_ct_tstamp_ext_add(ct, GFP_ATOMIC);
diff --git a/net/netfilter/nf_nat_core.c b/net/netfilter/nf_nat_core.c
index d3f5cd6dd962..52ca952b802c 100644
--- a/net/netfilter/nf_nat_core.c
+++ b/net/netfilter/nf_nat_core.c
@@ -432,15 +432,15 @@ nf_nat_setup_info(struct nf_conn *ct,
 }
 EXPORT_SYMBOL(nf_nat_setup_info);
 
-unsigned int
-nf_nat_alloc_null_binding(struct nf_conn *ct, unsigned int hooknum)
+static unsigned int
+__nf_nat_alloc_null_binding(struct nf_conn *ct, enum nf_nat_manip_type manip)
 {
         /* Force range to this IP; let proto decide mapping for
          * per-proto parts (hence not IP_NAT_RANGE_PROTO_SPECIFIED).
          * Use reply in case it's already been mangled (eg local packet).
          */
         union nf_inet_addr ip =
-                (HOOK2MANIP(hooknum) == NF_NAT_MANIP_SRC ?
+                (manip == NF_NAT_MANIP_SRC ?
                 ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3 :
                 ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3);
         struct nf_nat_range range = {
@@ -448,7 +448,13 @@ nf_nat_alloc_null_binding(struct nf_conn *ct, unsigned int hooknum)
                 .min_addr       = ip,
                 .max_addr       = ip,
         };
-        return nf_nat_setup_info(ct, &range, HOOK2MANIP(hooknum));
+        return nf_nat_setup_info(ct, &range, manip);
+}
+
+unsigned int
+nf_nat_alloc_null_binding(struct nf_conn *ct, unsigned int hooknum)
+{
+        return __nf_nat_alloc_null_binding(ct, HOOK2MANIP(hooknum));
 }
 EXPORT_SYMBOL_GPL(nf_nat_alloc_null_binding);
 
@@ -702,9 +708,9 @@ static const struct nla_policy nat_nla_policy[CTA_NAT_MAX+1] = {
 
 static int
 nfnetlink_parse_nat(const struct nlattr *nat,
-                    const struct nf_conn *ct, struct nf_nat_range *range)
+                    const struct nf_conn *ct, struct nf_nat_range *range,
+                    const struct nf_nat_l3proto *l3proto)
 {
-        const struct nf_nat_l3proto *l3proto;
         struct nlattr *tb[CTA_NAT_MAX+1];
         int err;
 
@@ -714,38 +720,46 @@ nfnetlink_parse_nat(const struct nlattr *nat,
         if (err < 0)
                 return err;
 
-        rcu_read_lock();
-        l3proto = __nf_nat_l3proto_find(nf_ct_l3num(ct));
-        if (l3proto == NULL) {
-                err = -EAGAIN;
-                goto out;
-        }
         err = l3proto->nlattr_to_range(tb, range);
         if (err < 0)
-                goto out;
+                return err;
 
         if (!tb[CTA_NAT_PROTO])
-                goto out;
+                return 0;
 
-        err = nfnetlink_parse_nat_proto(tb[CTA_NAT_PROTO], ct, range);
-out:
-        rcu_read_unlock();
-        return err;
+        return nfnetlink_parse_nat_proto(tb[CTA_NAT_PROTO], ct, range);
 }
 
+/* This function is called under rcu_read_lock() */
 static int
 nfnetlink_parse_nat_setup(struct nf_conn *ct,
                           enum nf_nat_manip_type manip,
                           const struct nlattr *attr)
 {
         struct nf_nat_range range;
+        const struct nf_nat_l3proto *l3proto;
         int err;
 
-        err = nfnetlink_parse_nat(attr, ct, &range);
+        /* Should not happen, restricted to creating new conntracks
+         * via ctnetlink.
+         */
+        if (WARN_ON_ONCE(nf_nat_initialized(ct, manip)))
+                return -EEXIST;
+
+        /* Make sure that L3 NAT is there by when we call nf_nat_setup_info to
+         * attach the null binding, otherwise this may oops.
+         */
+        l3proto = __nf_nat_l3proto_find(nf_ct_l3num(ct));
+        if (l3proto == NULL)
+                return -EAGAIN;
+
+        /* No NAT information has been passed, allocate the null-binding */
+        if (attr == NULL)
+                return __nf_nat_alloc_null_binding(ct, manip);
+
+        err = nfnetlink_parse_nat(attr, ct, &range, l3proto);
         if (err < 0)
                 return err;
-        if (nf_nat_initialized(ct, manip))
-                return -EEXIST;
 
         return nf_nat_setup_info(ct, &range, manip);
 }
diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c
index e8254ad2e5a9..425cf39af890 100644
--- a/net/netfilter/nft_meta.c
+++ b/net/netfilter/nft_meta.c
@@ -116,7 +116,7 @@ static void nft_meta_get_eval(const struct nft_expr *expr,
                                  skb->sk->sk_socket->file->f_cred->fsgid);
                 read_unlock_bh(&skb->sk->sk_callback_lock);
                 break;
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
         case NFT_META_RTCLASSID: {
                 const struct dst_entry *dst = skb_dst(skb);
 
@@ -199,7 +199,7 @@ static int nft_meta_init_validate_get(uint32_t key)
         case NFT_META_OIFTYPE:
         case NFT_META_SKUID:
         case NFT_META_SKGID:
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
         case NFT_META_RTCLASSID:
 #endif
 #ifdef CONFIG_NETWORK_SECMARK
diff --git a/net/netfilter/nft_payload.c b/net/netfilter/nft_payload.c
index a2aeb318678f..85daa84bfdfe 100644
--- a/net/netfilter/nft_payload.c
+++ b/net/netfilter/nft_payload.c
@@ -135,7 +135,8 @@ nft_payload_select_ops(const struct nft_ctx *ctx,
         if (len == 0 || len > FIELD_SIZEOF(struct nft_data, data))
                 return ERR_PTR(-EINVAL);
 
-        if (len <= 4 && IS_ALIGNED(offset, len) && base != NFT_PAYLOAD_LL_HEADER)
+        if (len <= 4 && is_power_of_2(len) && IS_ALIGNED(offset, len) &&
+            base != NFT_PAYLOAD_LL_HEADER)
                 return &nft_payload_fast_ops;
         else
                 return &nft_payload_ops;
diff --git a/net/netfilter/nft_reject_inet.c b/net/netfilter/nft_reject_inet.c
index 8a310f239c93..b718a52a4654 100644
--- a/net/netfilter/nft_reject_inet.c
+++ b/net/netfilter/nft_reject_inet.c
@@ -21,9 +21,9 @@ static void nft_reject_inet_eval(const struct nft_expr *expr,
 {
         switch (pkt->ops->pf) {
         case NFPROTO_IPV4:
-                nft_reject_ipv4_eval(expr, data, pkt);
+                return nft_reject_ipv4_eval(expr, data, pkt);
         case NFPROTO_IPV6:
-                nft_reject_ipv6_eval(expr, data, pkt);
+                return nft_reject_ipv6_eval(expr, data, pkt);
         }
 }
 
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index fdf51353cf78..04748ab649c2 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1489,8 +1489,8 @@ static int netlink_connect(struct socket *sock, struct sockaddr *addr,
         if (addr->sa_family != AF_NETLINK)
                 return -EINVAL;
 
-        /* Only superuser is allowed to send multicasts */
-        if (nladdr->nl_groups && !netlink_capable(sock, NL_CFG_F_NONROOT_SEND))
+        if ((nladdr->nl_groups || nladdr->nl_pid) &&
+            !netlink_capable(sock, NL_CFG_F_NONROOT_SEND))
                 return -EPERM;
 
         if (!nlk->portid)
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index 46bda010bf11..56db888b1cd5 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -301,7 +301,7 @@ static int nci_open_device(struct nci_dev *ndev)
         rc = __nci_request(ndev, nci_reset_req, 0,
                            msecs_to_jiffies(NCI_RESET_TIMEOUT));
 
-        if (ndev->ops->setup(ndev))
+        if (ndev->ops->setup)
                 ndev->ops->setup(ndev);
 
         if (!rc) {
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 6a2bb37506c5..48a6a93db296 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -308,11 +308,27 @@ static bool packet_use_direct_xmit(const struct packet_sock *po)
         return po->xmit == packet_direct_xmit;
 }
 
-static u16 packet_pick_tx_queue(struct net_device *dev)
+static u16 __packet_pick_tx_queue(struct net_device *dev, struct sk_buff *skb)
 {
         return (u16) raw_smp_processor_id() % dev->real_num_tx_queues;
 }
 
+static void packet_pick_tx_queue(struct net_device *dev, struct sk_buff *skb)
+{
+        const struct net_device_ops *ops = dev->netdev_ops;
+        u16 queue_index;
+
+        if (ops->ndo_select_queue) {
+                queue_index = ops->ndo_select_queue(dev, skb, NULL,
+                                                    __packet_pick_tx_queue);
+                queue_index = netdev_cap_txqueue(dev, queue_index);
+        } else {
+                queue_index = __packet_pick_tx_queue(dev, skb);
+        }
+
+        skb_set_queue_mapping(skb, queue_index);
+}
+
 /* register_prot_hook must be invoked with the po->bind_lock held,
  * or from a context in which asynchronous accesses to the packet
  * socket is not possible (packet_create()).
@@ -2285,7 +2301,8 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
                         }
                 }
 
-                skb_set_queue_mapping(skb, packet_pick_tx_queue(dev));
+                packet_pick_tx_queue(dev, skb);
+
                 skb->destructor = tpacket_destruct_skb;
                 __packet_set_status(po, ph, TP_STATUS_SENDING);
                 packet_inc_pending(&po->tx_ring);
@@ -2499,7 +2516,8 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
         skb->dev = dev;
         skb->priority = sk->sk_priority;
         skb->mark = sk->sk_mark;
-        skb_set_queue_mapping(skb, packet_pick_tx_queue(dev));
+
+        packet_pick_tx_queue(dev, skb);
 
         if (po->has_vnet_hdr) {
                 if (vnet_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) {
@@ -3786,7 +3804,7 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
                  */
                         if (!tx_ring)
                                 init_prb_bdqc(po, rb, pg_vec, req_u, tx_ring);
-                                break;
+                        break;
                 default:
                         break;
                 }
diff --git a/net/sched/sch_pie.c b/net/sched/sch_pie.c
index a255d0200a59..fefeeb73f15f 100644
--- a/net/sched/sch_pie.c
+++ b/net/sched/sch_pie.c
@@ -15,6 +15,11 @@
  *
  * ECN support is added by Naeem Khademi <naeemk@ifi.uio.no>
  * University of Oslo, Norway.
+ *
+ * References:
+ * IETF draft submission: http://tools.ietf.org/html/draft-pan-aqm-pie-00
+ * IEEE  Conference on High Performance Switching and Routing 2013 :
+ * "PIE: A * Lightweight Control Scheme to Address the Bufferbloat Problem"
  */
 
 #include <linux/module.h>
@@ -36,7 +41,7 @@ struct pie_params {
         psched_time_t target;   /* user specified target delay in pschedtime */
         u32 tupdate;            /* timer frequency (in jiffies) */
         u32 limit;              /* number of packets that can be enqueued */
-        u32 alpha;              /* alpha and beta are between -4 and 4 */
+        u32 alpha;              /* alpha and beta are between 0 and 32 */
         u32 beta;               /* and are used for shift relative to 1 */
         bool ecn;               /* true if ecn is enabled */
         bool bytemode;          /* to scale drop early prob based on pkt size */
@@ -326,10 +331,16 @@ static void calculate_probability(struct Qdisc *sch)
         if (qdelay == 0 && qlen != 0)
                 update_prob = false;
 
-        /* Add ranges for alpha and beta, more aggressive for high dropping
-         * mode and gentle steps for light dropping mode
-         * In light dropping mode, take gentle steps; in medium dropping mode,
-         * take medium steps; in high dropping mode, take big steps.
+        /* In the algorithm, alpha and beta are between 0 and 2 with typical
+         * value for alpha as 0.125. In this implementation, we use values 0-32
+         * passed from user space to represent this. Also, alpha and beta have
+         * unit of HZ and need to be scaled before they can used to update
+         * probability. alpha/beta are updated locally below by 1) scaling them
+         * appropriately 2) scaling down by 16 to come to 0-2 range.
+         * Please see paper for details.
+         *
+         * We scale alpha and beta differently depending on whether we are in
+         * light, medium or high dropping mode.
          */
         if (q->vars.prob < MAX_PROB / 100) {
                 alpha =
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index 1cb413fead89..4f505a006896 100644
--- a/net/sched/sch_tbf.c
+++ b/net/sched/sch_tbf.c
@@ -334,18 +334,6 @@ static int tbf_change(struct Qdisc *sch, struct nlattr *opt)
                         qdisc_put_rtab(qdisc_get_rtab(&qopt->peakrate,
                                                       tb[TCA_TBF_PTAB]));
 
-        if (q->qdisc != &noop_qdisc) {
-                err = fifo_set_limit(q->qdisc, qopt->limit);
-                if (err)
-                        goto done;
-        } else if (qopt->limit > 0) {
-                child = fifo_create_dflt(sch, &bfifo_qdisc_ops, qopt->limit);
-                if (IS_ERR(child)) {
-                        err = PTR_ERR(child);
-                        goto done;
-                }
-        }
-
         buffer = min_t(u64, PSCHED_TICKS2NS(qopt->buffer), ~0U);
         mtu = min_t(u64, PSCHED_TICKS2NS(qopt->mtu), ~0U);
 
@@ -390,6 +378,18 @@ static int tbf_change(struct Qdisc *sch, struct nlattr *opt)
                 goto done;
         }
 
+        if (q->qdisc != &noop_qdisc) {
+                err = fifo_set_limit(q->qdisc, qopt->limit);
+                if (err)
+                        goto done;
+        } else if (qopt->limit > 0) {
+                child = fifo_create_dflt(sch, &bfifo_qdisc_ops, qopt->limit);
+                if (IS_ERR(child)) {
+                        err = PTR_ERR(child);
+                        goto done;
+                }
+        }
+
         sch_tree_lock(sch);
         if (child) {
                 qdisc_tree_decrease_qlen(q->qdisc, q->qdisc->q.qlen);
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 5ae609200674..ee13d28d39d1 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -1239,78 +1239,107 @@ void sctp_assoc_update(struct sctp_association *asoc,
 }
 
 /* Update the retran path for sending a retransmitted packet.
- * Round-robin through the active transports, else round-robin
- * through the inactive transports as this is the next best thing
- * we can try.
+ * See also RFC4960, 6.4. Multi-Homed SCTP Endpoints:
+ *
+ *   When there is outbound data to send and the primary path
+ *   becomes inactive (e.g., due to failures), or where the
+ *   SCTP user explicitly requests to send data to an
+ *   inactive destination transport address, before reporting
+ *   an error to its ULP, the SCTP endpoint should try to send
+ *   the data to an alternate active destination transport
+ *   address if one exists.
+ *
+ *   When retransmitting data that timed out, if the endpoint
+ *   is multihomed, it should consider each source-destination
+ *   address pair in its retransmission selection policy.
+ *   When retransmitting timed-out data, the endpoint should
+ *   attempt to pick the most divergent source-destination
+ *   pair from the original source-destination pair to which
+ *   the packet was transmitted.
+ *
+ *   Note: Rules for picking the most divergent source-destination
+ *   pair are an implementation decision and are not specified
+ *   within this document.
+ *
+ * Our basic strategy is to round-robin transports in priorities
+ * according to sctp_state_prio_map[] e.g., if no such
+ * transport with state SCTP_ACTIVE exists, round-robin through
+ * SCTP_UNKNOWN, etc. You get the picture.
  */
-void sctp_assoc_update_retran_path(struct sctp_association *asoc)
+static const u8 sctp_trans_state_to_prio_map[] = {
+        [SCTP_ACTIVE]   = 3,    /* best case */
+        [SCTP_UNKNOWN]  = 2,
+        [SCTP_PF]       = 1,
+        [SCTP_INACTIVE] = 0,    /* worst case */
+};
+
+static u8 sctp_trans_score(const struct sctp_transport *trans)
 {
-        struct sctp_transport *t, *next;
-        struct list_head *head = &asoc->peer.transport_addr_list;
-        struct list_head *pos;
+        return sctp_trans_state_to_prio_map[trans->state];
+}
 
-        if (asoc->peer.transport_count == 1)
-                return;
+static struct sctp_transport *sctp_trans_elect_best(struct sctp_transport *curr,
+                                                    struct sctp_transport *best)
+{
+        if (best == NULL)
+                return curr;
 
-        /* Find the next transport in a round-robin fashion. */
-        t = asoc->peer.retran_path;
-        pos = &t->transports;
-        next = NULL;
+        return sctp_trans_score(curr) > sctp_trans_score(best) ? curr : best;
+}
 
-        while (1) {
-                /* Skip the head. */
-                if (pos->next == head)
-                        pos = head->next;
-                else
-                        pos = pos->next;
+void sctp_assoc_update_retran_path(struct sctp_association *asoc)
+{
+        struct sctp_transport *trans = asoc->peer.retran_path;
+        struct sctp_transport *trans_next = NULL;
 
-                t = list_entry(pos, struct sctp_transport, transports);
+        /* We're done as we only have the one and only path. */
+        if (asoc->peer.transport_count == 1)
+                return;
+        /* If active_path and retran_path are the same and active,
+         * then this is the only active path. Use it.
+         */
+        if (asoc->peer.active_path == asoc->peer.retran_path &&
+            asoc->peer.active_path->state == SCTP_ACTIVE)
+                return;
 
-                /* We have exhausted the list, but didn't find any
-                 * other active transports.  If so, use the next
-                 * transport.
-                 */
-                if (t == asoc->peer.retran_path) {
-                        t = next;
+        /* Iterate from retran_path's successor back to retran_path. */
+        for (trans = list_next_entry(trans, transports); 1;
+             trans = list_next_entry(trans, transports)) {
+                /* Manually skip the head element. */
+                if (&trans->transports == &asoc->peer.transport_addr_list)
+                        continue;
+                if (trans->state == SCTP_UNCONFIRMED)
+                        continue;
+                trans_next = sctp_trans_elect_best(trans, trans_next);
+                /* Active is good enough for immediate return. */
+                if (trans_next->state == SCTP_ACTIVE)
                         break;
-                }
-
-                /* Try to find an active transport. */
-
-                if ((t->state == SCTP_ACTIVE) ||
-                    (t->state == SCTP_UNKNOWN)) {
+                /* We've reached the end, time to update path. */
+                if (trans == asoc->peer.retran_path)
                         break;
-                } else {
-                        /* Keep track of the next transport in case
-                         * we don't find any active transport.
-                         */
-                        if (t->state != SCTP_UNCONFIRMED && !next)
-                                next = t;
-                }
         }
 
-        if (t)
-                asoc->peer.retran_path = t;
-        else
-                t = asoc->peer.retran_path;
+        if (trans_next != NULL)
+                asoc->peer.retran_path = trans_next;
 
-        pr_debug("%s: association:%p addr:%pISpc\n", __func__, asoc,
-                 &t->ipaddr.sa);
+        pr_debug("%s: association:%p updated new path to addr:%pISpc\n",
+                 __func__, asoc, &asoc->peer.retran_path->ipaddr.sa);
 }
 
-/* Choose the transport for sending retransmit packet.  */
-struct sctp_transport *sctp_assoc_choose_alter_transport(
-        struct sctp_association *asoc, struct sctp_transport *last_sent_to)
+struct sctp_transport *
+sctp_assoc_choose_alter_transport(struct sctp_association *asoc,
+                                  struct sctp_transport *last_sent_to)
 {
         /* If this is the first time packet is sent, use the active path,
          * else use the retran path. If the last packet was sent over the
          * retran path, update the retran path and use it.
          */
-        if (!last_sent_to)
+        if (last_sent_to == NULL) {
                 return asoc->peer.active_path;
-        else {
+        } else {
                 if (last_sent_to == asoc->peer.retran_path)
                         sctp_assoc_update_retran_path(asoc);
+
                 return asoc->peer.retran_path;
         }
 }
@@ -1367,44 +1396,35 @@ static inline bool sctp_peer_needs_update(struct sctp_association *asoc)
         return false;
 }
 
-/* Increase asoc's rwnd by len and send any window update SACK if needed. */
-void sctp_assoc_rwnd_increase(struct sctp_association *asoc, unsigned int len)
+/* Update asoc's rwnd for the approximated state in the buffer,
+ * and check whether SACK needs to be sent.
+ */
+void sctp_assoc_rwnd_update(struct sctp_association *asoc, bool update_peer)
 {
+        int rx_count;
         struct sctp_chunk *sack;
         struct timer_list *timer;
 
-        if (asoc->rwnd_over) {
-                if (asoc->rwnd_over >= len) {
-                        asoc->rwnd_over -= len;
-                } else {
-                        asoc->rwnd += (len - asoc->rwnd_over);
-                        asoc->rwnd_over = 0;
-                }
-        } else {
-                asoc->rwnd += len;
-        }
+        if (asoc->ep->rcvbuf_policy)
+                rx_count = atomic_read(&asoc->rmem_alloc);
+        else
+                rx_count = atomic_read(&asoc->base.sk->sk_rmem_alloc);
 
-        /* If we had window pressure, start recovering it
-         * once our rwnd had reached the accumulated pressure
-         * threshold.  The idea is to recover slowly, but up
-         * to the initial advertised window.
-         */
-        if (asoc->rwnd_press && asoc->rwnd >= asoc->rwnd_press) {
-                int change = min(asoc->pathmtu, asoc->rwnd_press);
-                asoc->rwnd += change;
-                asoc->rwnd_press -= change;
-        }
+        if ((asoc->base.sk->sk_rcvbuf - rx_count) > 0)
+                asoc->rwnd = (asoc->base.sk->sk_rcvbuf - rx_count) >> 1;
+        else
+                asoc->rwnd = 0;
 
-        pr_debug("%s: asoc:%p rwnd increased by %d to (%u, %u) - %u\n",
-                 __func__, asoc, len, asoc->rwnd, asoc->rwnd_over,
-                 asoc->a_rwnd);
+        pr_debug("%s: asoc:%p rwnd=%u, rx_count=%d, sk_rcvbuf=%d\n",
+                 __func__, asoc, asoc->rwnd, rx_count,
+                 asoc->base.sk->sk_rcvbuf);
 
         /* Send a window update SACK if the rwnd has increased by at least the
          * minimum of the association's PMTU and half of the receive buffer.
          * The algorithm used is similar to the one described in
          * Section 4.2.3.3 of RFC 1122.
          */
-        if (sctp_peer_needs_update(asoc)) {
+        if (update_peer && sctp_peer_needs_update(asoc)) {
                 asoc->a_rwnd = asoc->rwnd;
 
                 pr_debug("%s: sending window update SACK- asoc:%p rwnd:%u "
@@ -1426,45 +1446,6 @@ void sctp_assoc_rwnd_increase(struct sctp_association *asoc, unsigned int len)
         }
 }
 
-/* Decrease asoc's rwnd by len. */
-void sctp_assoc_rwnd_decrease(struct sctp_association *asoc, unsigned int len)
-{
-        int rx_count;
-        int over = 0;
-
-        if (unlikely(!asoc->rwnd || asoc->rwnd_over))
-                pr_debug("%s: association:%p has asoc->rwnd:%u, "
-                         "asoc->rwnd_over:%u!\n", __func__, asoc,
-                         asoc->rwnd, asoc->rwnd_over);
-
-        if (asoc->ep->rcvbuf_policy)
-                rx_count = atomic_read(&asoc->rmem_alloc);
-        else
-                rx_count = atomic_read(&asoc->base.sk->sk_rmem_alloc);
-
-        /* If we've reached or overflowed our receive buffer, announce
-         * a 0 rwnd if rwnd would still be positive.  Store the
-         * the potential pressure overflow so that the window can be restored
-         * back to original value.
-         */
-        if (rx_count >= asoc->base.sk->sk_rcvbuf)
-                over = 1;
-
-        if (asoc->rwnd >= len) {
-                asoc->rwnd -= len;
-                if (over) {
-                        asoc->rwnd_press += asoc->rwnd;
-                        asoc->rwnd = 0;
-                }
-        } else {
-                asoc->rwnd_over = len - asoc->rwnd;
-                asoc->rwnd = 0;
-        }
-
-        pr_debug("%s: asoc:%p rwnd decreased by %d to (%u, %u, %u)\n",
-                 __func__, asoc, len, asoc->rwnd, asoc->rwnd_over,
-                 asoc->rwnd_press);
-}
 
 /* Build the bind address list for the association based on info from the
  * local endpoint and the remote peer.
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index bd859154000e..5d6883ff00c3 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -495,11 +495,12 @@ static void sctp_do_8_2_transport_strike(sctp_cmd_seq_t *commands,
         }
 
         /* If the transport error count is greater than the pf_retrans
-         * threshold, and less than pathmaxrtx, then mark this transport
-         * as Partially Failed, ee SCTP Quick Failover Draft, secon 5.1,
-         * point 1
+         * threshold, and less than pathmaxrtx, and if the current state
+         * is not SCTP_UNCONFIRMED, then mark this transport as Partially
+         * Failed, see SCTP Quick Failover Draft, section 5.1
          */
         if ((transport->state != SCTP_PF) &&
+           (transport->state != SCTP_UNCONFIRMED) &&
            (asoc->pf_retrans < transport->pathmaxrxt) &&
            (transport->error_count > asoc->pf_retrans)) {
 
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 483dcd71b3c5..ae65b6b5973a 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -758,6 +758,13 @@ sctp_disposition_t sctp_sf_do_5_1D_ce(struct net *net,
                 struct sctp_chunk auth;
                 sctp_ierror_t ret;
 
+                /* Make sure that we and the peer are AUTH capable */
+                if (!net->sctp.auth_enable || !new_asoc->peer.auth_capable) {
+                        kfree_skb(chunk->auth_chunk);
+                        sctp_association_free(new_asoc);
+                        return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
+                }
+
                 /* set-up our fake chunk so that we can process it */
                 auth.skb = chunk->auth_chunk;
                 auth.asoc = chunk->asoc;
@@ -6176,7 +6183,7 @@ static int sctp_eat_data(const struct sctp_association *asoc,
          * PMTU.  In cases, such as loopback, this might be a rather
          * large spill over.
          */
-        if ((!chunk->data_accepted) && (!asoc->rwnd || asoc->rwnd_over ||
+        if ((!chunk->data_accepted) && (!asoc->rwnd ||
             (datalen > asoc->rwnd + asoc->frag_point))) {
 
                 /* If this is the next TSN, consider reneging to make
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 9e91d6e5df63..981aaf8b6ace 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -64,6 +64,7 @@
 #include <linux/crypto.h>
 #include <linux/slab.h>
 #include <linux/file.h>
+#include <linux/compat.h>
 
 #include <net/ip.h>
 #include <net/icmp.h>
@@ -1368,11 +1369,19 @@ static int sctp_setsockopt_connectx(struct sock *sk,
 /*
  * New (hopefully final) interface for the API.
  * We use the sctp_getaddrs_old structure so that use-space library
- * can avoid any unnecessary allocations.   The only defferent part
+ * can avoid any unnecessary allocations. The only different part
  * is that we store the actual length of the address buffer into the
- * addrs_num structure member.  That way we can re-use the existing
+ * addrs_num structure member. That way we can re-use the existing
  * code.
  */
+#ifdef CONFIG_COMPAT
+struct compat_sctp_getaddrs_old {
+        sctp_assoc_t    assoc_id;
+        s32             addr_num;
+        compat_uptr_t   addrs;          /* struct sockaddr * */
+};
+#endif
+
 static int sctp_getsockopt_connectx3(struct sock *sk, int len,
                                      char __user *optval,
                                      int __user *optlen)
@@ -1381,16 +1390,30 @@ static int sctp_getsockopt_connectx3(struct sock *sk, int len,
         sctp_assoc_t assoc_id = 0;
         int err = 0;
 
-        if (len < sizeof(param))
-                return -EINVAL;
+#ifdef CONFIG_COMPAT
+        if (is_compat_task()) {
+                struct compat_sctp_getaddrs_old param32;
 
-        if (copy_from_user(&param, optval, sizeof(param)))
-                return -EFAULT;
+                if (len < sizeof(param32))
+                        return -EINVAL;
+                if (copy_from_user(&param32, optval, sizeof(param32)))
+                        return -EFAULT;
 
-        err = __sctp_setsockopt_connectx(sk,
-                        (struct sockaddr __user *)param.addrs,
-                        param.addr_num, &assoc_id);
+                param.assoc_id = param32.assoc_id;
+                param.addr_num = param32.addr_num;
+                param.addrs = compat_ptr(param32.addrs);
+        } else
+#endif
+        {
+                if (len < sizeof(param))
+                        return -EINVAL;
+                if (copy_from_user(&param, optval, sizeof(param)))
+                        return -EFAULT;
+        }
 
+        err = __sctp_setsockopt_connectx(sk, (struct sockaddr __user *)
+                                         param.addrs, param.addr_num,
+                                         &assoc_id);
         if (err == 0 || err == -EINPROGRESS) {
                 if (copy_to_user(optval, &assoc_id, sizeof(assoc_id)))
                         return -EFAULT;
@@ -2092,12 +2115,6 @@ static int sctp_recvmsg(struct kiocb *iocb, struct sock *sk,
                 sctp_skb_pull(skb, copied);
                 skb_queue_head(&sk->sk_receive_queue, skb);
 
-                /* When only partial message is copied to the user, increase
-                 * rwnd by that amount. If all the data in the skb is read,
-                 * rwnd is updated when the event is freed.
-                 */
-                if (!sctp_ulpevent_is_notification(event))
-                        sctp_assoc_rwnd_increase(event->asoc, copied);
                 goto out;
         } else if ((event->msg_flags & MSG_NOTIFICATION) ||
                    (event->msg_flags & MSG_EOR))
diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
index 7135e617ab0f..35c8923b5554 100644
--- a/net/sctp/sysctl.c
+++ b/net/sctp/sysctl.c
@@ -151,6 +151,7 @@ static struct ctl_table sctp_net_table[] = {
         },
         {
                 .procname       = "cookie_hmac_alg",
+                .data           = &init_net.sctp.sctp_hmac_alg,
                 .maxlen         = 8,
                 .mode           = 0644,
                 .proc_handler   = proc_sctp_do_hmac_alg,
@@ -401,15 +402,18 @@ static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write,
 
 int sctp_sysctl_net_register(struct net *net)
 {
-        struct ctl_table *table;
-        int i;
+        struct ctl_table *table = sctp_net_table;
+
+        if (!net_eq(net, &init_net)) {
+                int i;
 
-        table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL);
-        if (!table)
-                return -ENOMEM;
+                table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL);
+                if (!table)
+                        return -ENOMEM;
 
-        for (i = 0; table[i].data; i++)
-                table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp;
+                for (i = 0; table[i].data; i++)
+                        table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp;
+        }
 
         net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table);
         return 0;
diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index 85c64658bd0b..8d198ae03606 100644
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -989,7 +989,7 @@ static void sctp_ulpevent_receive_data(struct sctp_ulpevent *event,
         skb = sctp_event2skb(event);
         /* Set the owner and charge rwnd for bytes received.  */
         sctp_ulpevent_set_owner(event, asoc);
-        sctp_assoc_rwnd_decrease(asoc, skb_headlen(skb));
+        sctp_assoc_rwnd_update(asoc, false);
 
         if (!skb->data_len)
                 return;
@@ -1011,6 +1011,7 @@ static void sctp_ulpevent_release_data(struct sctp_ulpevent *event)
 {
         struct sk_buff *skb, *frag;
         unsigned int    len;
+        struct sctp_association *asoc;
 
         /* Current stack structures assume that the rcv buffer is
          * per socket.   For UDP style sockets this is not true as
@@ -1035,8 +1036,11 @@ static void sctp_ulpevent_release_data(struct sctp_ulpevent *event)
         }
 
 done:
-        sctp_assoc_rwnd_increase(event->asoc, len);
+        asoc = event->asoc;
+        sctp_association_hold(asoc);
         sctp_ulpevent_release_owner(event);
+        sctp_assoc_rwnd_update(asoc, true);
+        sctp_association_put(asoc);
 }
 
 static void sctp_ulpevent_release_frag_data(struct sctp_ulpevent *event)
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 6c0513a7f992..36e431ee1c90 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -108,6 +108,7 @@ struct gss_auth {
 static DEFINE_SPINLOCK(pipe_version_lock);
 static struct rpc_wait_queue pipe_version_rpc_waitqueue;
 static DECLARE_WAIT_QUEUE_HEAD(pipe_version_waitqueue);
+static void gss_put_auth(struct gss_auth *gss_auth);
 
 static void gss_free_ctx(struct gss_cl_ctx *);
 static const struct rpc_pipe_ops gss_upcall_ops_v0;
@@ -320,6 +321,7 @@ gss_release_msg(struct gss_upcall_msg *gss_msg)
         if (gss_msg->ctx != NULL)
                 gss_put_ctx(gss_msg->ctx);
         rpc_destroy_wait_queue(&gss_msg->rpc_waitqueue);
+        gss_put_auth(gss_msg->auth);
         kfree(gss_msg);
 }
 
@@ -498,9 +500,12 @@ gss_alloc_msg(struct gss_auth *gss_auth,
         default:
                 err = gss_encode_v1_msg(gss_msg, service_name, gss_auth->target_name);
                 if (err)
-                        goto err_free_msg;
+                        goto err_put_pipe_version;
         };
+        kref_get(&gss_auth->kref);
         return gss_msg;
+err_put_pipe_version:
+        put_pipe_version(gss_auth->net);
 err_free_msg:
         kfree(gss_msg);
 err:
@@ -991,6 +996,8 @@ gss_create_new(struct rpc_auth_create_args *args, struct rpc_clnt *clnt)
         gss_auth->service = gss_pseudoflavor_to_service(gss_auth->mech, flavor);
         if (gss_auth->service == 0)
                 goto err_put_mech;
+        if (!gssd_running(gss_auth->net))
+                goto err_put_mech;
         auth = &gss_auth->rpc_auth;
         auth->au_cslack = GSS_CRED_SLACK >> 2;
         auth->au_rslack = GSS_VERF_SLACK >> 2;
@@ -1062,6 +1069,12 @@ gss_free_callback(struct kref *kref)
 }
 
 static void
+gss_put_auth(struct gss_auth *gss_auth)
+{
+        kref_put(&gss_auth->kref, gss_free_callback);
+}
+
+static void
 gss_destroy(struct rpc_auth *auth)
 {
         struct gss_auth *gss_auth = container_of(auth,
@@ -1082,7 +1095,7 @@ gss_destroy(struct rpc_auth *auth)
         gss_auth->gss_pipe[1] = NULL;
         rpcauth_destroy_credcache(auth);
 
-        kref_put(&gss_auth->kref, gss_free_callback);
+        gss_put_auth(gss_auth);
 }
 
 /*
@@ -1253,7 +1266,7 @@ gss_destroy_nullcred(struct rpc_cred *cred)
         call_rcu(&cred->cr_rcu, gss_free_cred_callback);
         if (ctx)
                 gss_put_ctx(ctx);
-        kref_put(&gss_auth->kref, gss_free_callback);
+        gss_put_auth(gss_auth);
 }
 
 static void
diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c
index 890a29912d5a..e860d4f7ed2a 100644
--- a/net/sunrpc/backchannel_rqst.c
+++ b/net/sunrpc/backchannel_rqst.c
@@ -64,7 +64,6 @@ static void xprt_free_allocation(struct rpc_rqst *req)
         free_page((unsigned long)xbufp->head[0].iov_base);
         xbufp = &req->rq_snd_buf;
         free_page((unsigned long)xbufp->head[0].iov_base);
-        list_del(&req->rq_bc_pa_list);
         kfree(req);
 }
 
@@ -168,8 +167,10 @@ out_free:
         /*
          * Memory allocation failed, free the temporary list
          */
-        list_for_each_entry_safe(req, tmp, &tmp_list, rq_bc_pa_list)
+        list_for_each_entry_safe(req, tmp, &tmp_list, rq_bc_pa_list) {
+                list_del(&req->rq_bc_pa_list);
                 xprt_free_allocation(req);
+        }
 
         dprintk("RPC:       setup backchannel transport failed\n");
         return -ENOMEM;
@@ -198,6 +199,7 @@ void xprt_destroy_backchannel(struct rpc_xprt *xprt, unsigned int max_reqs)
         xprt_dec_alloc_count(xprt, max_reqs);
         list_for_each_entry_safe(req, tmp, &xprt->bc_pa_list, rq_bc_pa_list) {
                 dprintk("RPC:        req=%p\n", req);
+                list_del(&req->rq_bc_pa_list);
                 xprt_free_allocation(req);
                 if (--max_reqs == 0)
                         break;
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 817a1e523969..0addefca8e77 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -510,6 +510,7 @@ static int xs_nospace(struct rpc_task *task)
         struct rpc_rqst *req = task->tk_rqstp;
         struct rpc_xprt *xprt = req->rq_xprt;
         struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
+        struct sock *sk = transport->inet;
         int ret = -EAGAIN;
 
         dprintk("RPC: %5u xmit incomplete (%u left of %u)\n",
@@ -527,7 +528,7 @@ static int xs_nospace(struct rpc_task *task)
                          * window size
                          */
                         set_bit(SOCK_NOSPACE, &transport->sock->flags);
-                        transport->inet->sk_write_pending++;
+                        sk->sk_write_pending++;
                         /* ...and wait for more buffer space */
                         xprt_wait_for_buffer_space(task, xs_nospace_callback);
                 }
@@ -537,6 +538,9 @@ static int xs_nospace(struct rpc_task *task)
         }
 
         spin_unlock_bh(&xprt->transport_lock);
+
+        /* Race breaker in case memory is freed before above code is called */
+        sk->sk_write_space(sk);
         return ret;
 }
 
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index a38c89969c68..574b86193b15 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -610,8 +610,13 @@ static struct notifier_block notifier = {
 
 int tipc_bearer_setup(void)
 {
+        int err;
+
+        err = register_netdevice_notifier(&notifier);
+        if (err)
+                return err;
         dev_add_pack(&tipc_packet_type);
-        return register_netdevice_notifier(&notifier);
+        return 0;
 }
 
 void tipc_bearer_cleanup(void)
diff --git a/net/tipc/config.c b/net/tipc/config.c
index c301a9a592d8..e74eef2e7490 100644
--- a/net/tipc/config.c
+++ b/net/tipc/config.c
@@ -181,7 +181,7 @@ static struct sk_buff *cfg_set_own_addr(void)
         if (tipc_own_addr)
                 return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
                                                    " (cannot change node address once assigned)");
-        tipc_core_start_net(addr);
+        tipc_net_start(addr);
         return tipc_cfg_reply_none();
 }
 
diff --git a/net/tipc/core.c b/net/tipc/core.c
index f9e88d8b04ca..80c20647b3d2 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -77,37 +77,13 @@ struct sk_buff *tipc_buf_acquire(u32 size)
 }
 
 /**
- * tipc_core_stop_net - shut down TIPC networking sub-systems
- */
-static void tipc_core_stop_net(void)
-{
-        tipc_net_stop();
-        tipc_bearer_cleanup();
-}
-
-/**
- * start_net - start TIPC networking sub-systems
- */
-int tipc_core_start_net(unsigned long addr)
-{
-        int res;
-
-        tipc_net_start(addr);
-        res = tipc_bearer_setup();
-        if (res < 0)
-                goto err;
-        return res;
-
-err:
-        tipc_core_stop_net();
-        return res;
-}
-
-/**
  * tipc_core_stop - switch TIPC from SINGLE NODE to NOT RUNNING mode
  */
 static void tipc_core_stop(void)
 {
+        tipc_handler_stop();
+        tipc_net_stop();
+        tipc_bearer_cleanup();
         tipc_netlink_stop();
         tipc_cfg_stop();
         tipc_subscr_stop();
@@ -122,30 +98,65 @@ static void tipc_core_stop(void)
  */
 static int tipc_core_start(void)
 {
-        int res;
+        int err;
 
         get_random_bytes(&tipc_random, sizeof(tipc_random));
 
-        res = tipc_handler_start();
-        if (!res)
-                res = tipc_ref_table_init(tipc_max_ports, tipc_random);
-        if (!res)
-                res = tipc_nametbl_init();
-        if (!res)
-                res = tipc_netlink_start();
-        if (!res)
-                res = tipc_socket_init();
-        if (!res)
-                res = tipc_register_sysctl();
-        if (!res)
-                res = tipc_subscr_start();
-        if (!res)
-                res = tipc_cfg_init();
-        if (res) {
-                tipc_handler_stop();
-                tipc_core_stop();
-        }
-        return res;
+        err = tipc_handler_start();
+        if (err)
+                goto out_handler;
+
+        err = tipc_ref_table_init(tipc_max_ports, tipc_random);
+        if (err)
+                goto out_reftbl;
+
+        err = tipc_nametbl_init();
+        if (err)
+                goto out_nametbl;
+
+        err = tipc_netlink_start();
+        if (err)
+                goto out_netlink;
+
+        err = tipc_socket_init();
+        if (err)
+                goto out_socket;
+
+        err = tipc_register_sysctl();
+        if (err)
+                goto out_sysctl;
+
+        err = tipc_subscr_start();
+        if (err)
+                goto out_subscr;
+
+        err = tipc_cfg_init();
+        if (err)
+                goto out_cfg;
+
+        err = tipc_bearer_setup();
+        if (err)
+                goto out_bearer;
+
+        return 0;
+out_bearer:
+        tipc_cfg_stop();
+out_cfg:
+        tipc_subscr_stop();
+out_subscr:
+        tipc_unregister_sysctl();
+out_sysctl:
+        tipc_socket_stop();
+out_socket:
+        tipc_netlink_stop();
+out_netlink:
+        tipc_nametbl_stop();
+out_nametbl:
+        tipc_ref_table_stop();
+out_reftbl:
+        tipc_handler_stop();
+out_handler:
+        return err;
 }
 
 static int __init tipc_init(void)
@@ -174,8 +185,6 @@ static int __init tipc_init(void)
 
 static void __exit tipc_exit(void)
 {
-        tipc_handler_stop();
-        tipc_core_stop_net();
         tipc_core_stop();
         pr_info("Deactivated\n");
 }
diff --git a/net/tipc/core.h b/net/tipc/core.h
index 1ff477b0450d..4dfe137587bb 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -90,7 +90,6 @@ extern int tipc_random __read_mostly;
 /*
  * Routines available to privileged subsystems
  */
-int tipc_core_start_net(unsigned long);
 int tipc_handler_start(void);
 void tipc_handler_stop(void);
 int tipc_netlink_start(void);
@@ -192,6 +191,7 @@ static inline void k_term_timer(struct timer_list *timer)
 
 struct tipc_skb_cb {
         void *handle;
+        bool deferred;
 };
 
 #define TIPC_SKB_CB(__skb) ((struct tipc_skb_cb *)&((__skb)->cb[0]))
diff --git a/net/tipc/link.c b/net/tipc/link.c
index d4b5de41b682..da6018beb6eb 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -1391,6 +1391,12 @@ static int link_recv_buf_validate(struct sk_buff *buf)
         u32 hdr_size;
         u32 min_hdr_size;
 
+        /* If this packet comes from the defer queue, the skb has already
+         * been validated
+         */
+        if (unlikely(TIPC_SKB_CB(buf)->deferred))
+                return 1;
+
         if (unlikely(buf->len < MIN_H_SIZE))
                 return 0;
 
@@ -1703,6 +1709,7 @@ static void link_handle_out_of_seq_msg(struct tipc_link *l_ptr,
                                 &l_ptr->newest_deferred_in, buf)) {
                 l_ptr->deferred_inqueue_sz++;
                 l_ptr->stats.deferred_recv++;
+                TIPC_SKB_CB(buf)->deferred = true;
                 if ((l_ptr->deferred_inqueue_sz % 16) == 1)
                         tipc_link_send_proto_msg(l_ptr, STATE_MSG, 0, 0, 0, 0, 0);
         } else
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c
index 92a1533af4e0..48302be175ce 100644
--- a/net/tipc/name_table.c
+++ b/net/tipc/name_table.c
@@ -945,9 +945,6 @@ void tipc_nametbl_stop(void)
 {
         u32 i;
 
-        if (!table.types)
-                return;
-
         /* Verify name table is empty, then release it */
         write_lock_bh(&tipc_nametbl_lock);
         for (i = 0; i < TIPC_NAMETBL_SIZE; i++) {
diff --git a/net/tipc/netlink.c b/net/tipc/netlink.c
index 9f72a6376362..3aaf73de9e2d 100644
--- a/net/tipc/netlink.c
+++ b/net/tipc/netlink.c
@@ -83,8 +83,6 @@ static struct genl_ops tipc_genl_ops[] = {
         },
 };
 
-static int tipc_genl_family_registered;
-
 int tipc_netlink_start(void)
 {
         int res;
@@ -94,16 +92,10 @@ int tipc_netlink_start(void)
                 pr_err("Failed to register netlink interface\n");
                 return res;
         }
-
-        tipc_genl_family_registered = 1;
         return 0;
 }
 
 void tipc_netlink_stop(void)
 {
-        if (!tipc_genl_family_registered)
-                return;
-
         genl_unregister_family(&tipc_genl_family);
-        tipc_genl_family_registered = 0;
 }
diff --git a/net/tipc/ref.c b/net/tipc/ref.c
index 2a2a938dc22c..de3d593e2fee 100644
--- a/net/tipc/ref.c
+++ b/net/tipc/ref.c
@@ -126,9 +126,6 @@ int tipc_ref_table_init(u32 requested_size, u32 start)
  */
 void tipc_ref_table_stop(void)
 {
-        if (!tipc_ref_table.entries)
-                return;
-
         vfree(tipc_ref_table.entries);
         tipc_ref_table.entries = NULL;
 }
diff --git a/net/tipc/server.c b/net/tipc/server.c
index b635ca347a87..373979789a73 100644
--- a/net/tipc/server.c
+++ b/net/tipc/server.c
@@ -573,7 +573,6 @@ int tipc_server_start(struct tipc_server *s)
                 kmem_cache_destroy(s->rcvbuf_cache);
                 return ret;
         }
-        s->enabled = 1;
         return ret;
 }
 
@@ -583,10 +582,6 @@ void tipc_server_stop(struct tipc_server *s)
         int total = 0;
         int id;
 
-        if (!s->enabled)
-                return;
-
-        s->enabled = 0;
         spin_lock_bh(&s->idr_lock);
         for (id = 0; total < s->idr_in_use; id++) {
                 con = idr_find(&s->conn_idr, id);
diff --git a/net/tipc/server.h b/net/tipc/server.h
index 98b23f20bc0f..be817b0b547e 100644
--- a/net/tipc/server.h
+++ b/net/tipc/server.h
@@ -56,7 +56,6 @@
  * @name: server name
  * @imp: message importance
  * @type: socket type
- * @enabled: identify whether server is launched or not
  */
 struct tipc_server {
         struct idr conn_idr;
@@ -74,7 +73,6 @@ struct tipc_server {
         const char name[TIPC_SERVER_NAME_LEN];
         int imp;
         int type;
-        int enabled;
 };
 
 int tipc_conn_sendmsg(struct tipc_server *s, int conid,
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index aab4948f0aff..a4cf274455aa 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -70,8 +70,6 @@ static const struct proto_ops msg_ops;
 static struct proto tipc_proto;
 static struct proto tipc_proto_kern;
 
-static int sockets_enabled;
-
 /*
  * Revised TIPC socket locking policy:
  *
@@ -2027,8 +2025,6 @@ int tipc_socket_init(void)
                 proto_unregister(&tipc_proto);
                 goto out;
         }
-
-        sockets_enabled = 1;
  out:
         return res;
 }
@@ -2038,10 +2034,6 @@ int tipc_socket_init(void)
  */
 void tipc_socket_stop(void)
 {
-        if (!sockets_enabled)
-                return;
-
-        sockets_enabled = 0;
         sock_unregister(tipc_family_ops.family);
         proto_unregister(&tipc_proto);
 }
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 9b897fca7487..f0541370e68e 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -1700,7 +1700,7 @@ static void reg_process_hint(struct regulatory_request *reg_request)
                 return;
         case NL80211_REGDOM_SET_BY_USER:
                 treatment = reg_process_hint_user(reg_request);
-                if (treatment == REG_REQ_OK ||
+                if (treatment == REG_REQ_IGNORE ||
                     treatment == REG_REQ_ALREADY_SET)
                         return;
                 schedule_delayed_work(&reg_timeout, msecs_to_jiffies(3142));
@@ -2373,6 +2373,7 @@ static int reg_set_rd_country_ie(const struct ieee80211_regdomain *rd,
 int set_regdom(const struct ieee80211_regdomain *rd)
 {
         struct regulatory_request *lr;
+        bool user_reset = false;
         int r;
 
         if (!reg_is_valid_request(rd->alpha2)) {
@@ -2389,6 +2390,7 @@ int set_regdom(const struct ieee80211_regdomain *rd)
                 break;
         case NL80211_REGDOM_SET_BY_USER:
                 r = reg_set_rd_user(rd, lr);
+                user_reset = true;
                 break;
         case NL80211_REGDOM_SET_BY_DRIVER:
                 r = reg_set_rd_driver(rd, lr);
@@ -2402,8 +2404,14 @@ int set_regdom(const struct ieee80211_regdomain *rd)
         }
 
         if (r) {
-                if (r == -EALREADY)
+                switch (r) {
+                case -EALREADY:
                         reg_set_request_processed();
+                        break;
+                default:
+                        /* Back to world regulatory in case of errors */
+                        restore_regulatory_settings(user_reset);
+                }
 
                 kfree(rd);
                 return r;
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 4b98b25793c5..1d5c7bf29938 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1158,7 +1158,7 @@ static struct xfrm_policy *__xfrm_policy_unlink(struct xfrm_policy *pol,
         if (hlist_unhashed(&pol->bydst))
                 return NULL;
 
-        hlist_del(&pol->bydst);
+        hlist_del_init(&pol->bydst);
         hlist_del(&pol->byidx);
         list_del(&pol->walk.all);
         net->xfrm.policy_count[dir]--;
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index a26b7aa79475..40f1b3e92e78 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1159,6 +1159,11 @@ static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig, int *errp)
         }
         x->props.aalgo = orig->props.aalgo;
 
+        if (orig->aead) {
+                x->aead = xfrm_algo_aead_clone(orig->aead);
+                if (!x->aead)
+                        goto error;
+        }
         if (orig->ealg) {
                 x->ealg = xfrm_algo_clone(orig->ealg);
                 if (!x->ealg)
@@ -1201,6 +1206,9 @@ static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig, int *errp)
         x->props.flags = orig->props.flags;
         x->props.extra_flags = orig->props.extra_flags;
 
+        x->tfcpad = orig->tfcpad;
+        x->replay_maxdiff = orig->replay_maxdiff;
+        x->replay_maxage = orig->replay_maxage;
         x->curlft.add_time = orig->curlft.add_time;
         x->km.state = orig->km.state;
         x->km.seq = orig->km.seq;
@@ -1215,11 +1223,12 @@ out:
         return NULL;
 }
 
-/* net->xfrm.xfrm_state_lock is held */
 struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net)
 {
         unsigned int h;
-        struct xfrm_state *x;
+        struct xfrm_state *x = NULL;
+
+        spin_lock_bh(&net->xfrm.xfrm_state_lock);
 
         if (m->reqid) {
                 h = xfrm_dst_hash(net, &m->old_daddr, &m->old_saddr,
@@ -1236,7 +1245,7 @@ struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *n
                                              m->old_family))
                                 continue;
                         xfrm_state_hold(x);
-                        return x;
+                        break;
                 }
         } else {
                 h = xfrm_src_hash(net, &m->old_daddr, &m->old_saddr,
@@ -1251,11 +1260,13 @@ struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *n
                                              m->old_family))
                                 continue;
                         xfrm_state_hold(x);
-                        return x;
+                        break;
                 }
         }
 
-        return NULL;
+        spin_unlock_bh(&net->xfrm.xfrm_state_lock);
+
+        return x;
 }
 EXPORT_SYMBOL(xfrm_migrate_state_find);
 
@@ -1451,7 +1462,7 @@ xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src, int n,
 {
         int err = 0;
         struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family);
-        struct net *net = xs_net(*dst);
+        struct net *net = xs_net(*src);
 
         if (!afinfo)
                 return -EAFNOSUPPORT;
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 1ae3ec7c18b0..c274179d60a2 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -32,11 +32,6 @@
 #include <linux/in6.h>
 #endif
 
-static inline int aead_len(struct xfrm_algo_aead *alg)
-{
-        return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
-}
-
 static int verify_one_alg(struct nlattr **attrs, enum xfrm_attr_type_t type)
 {
         struct nlattr *rt = attrs[type];