Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Pull networking fixes from David Miller:
 "This looks like a lot but it's a mixture of regression fixes as well
  as fixes for longer standing issues.

   1) Fix on-channel cancellation in mac80211, from Johannes Berg.

   2) Handle CHECKSUM_COMPLETE properly in xt_TCPMSS netfilter xtables
      module, from Eric Dumazet.

   3) Avoid infinite loop in UDP SO_REUSEPORT logic, also from Eric
      Dumazet.

   4) Avoid a NULL deref if we try to set SO_REUSEPORT after a socket is
      bound, from Craig Gallek.

   5) GRO key comparisons don't take lightweight tunnels into account,
      from Jesse Gross.

   6) Fix struct pid leak via SCM credentials in AF_UNIX, from Eric
      Dumazet.

   7) We need to set the rtnl_link_ops of ipv6 SIT tunnels before we
      register them, otherwise the NEWLINK netlink message is missing
      the proper attributes.  From Thadeu Lima de Souza Cascardo.

   8) Several Spectrum chip bug fixes for mlxsw switch driver, from Ido
      Schimmel

   9) Handle fragments properly in ipv4 easly socket demux, from Eric
      Dumazet.

  10) Don't ignore the ifindex key specifier on ipv6 output route
      lookups, from Paolo Abeni"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (128 commits)
  tcp: avoid cwnd undo after receiving ECN
  irda: fix a potential use-after-free in ircomm_param_request
  net: tg3: avoid uninitialized variable warning
  net: nb8800: avoid uninitialized variable warning
  net: vxge: avoid unused function warnings
  net: bgmac: clarify CONFIG_BCMA dependency
  net: hp100: remove unnecessary #ifdefs
  net: davinci_cpdma: use dma_addr_t for DMA address
  ipv6/udp: use sticky pktinfo egress ifindex on connect()
  ipv6: enforce flowi6_oif usage in ip6_dst_lookup_tail()
  netlink: not trim skb for mmaped socket when dump
  vxlan: fix a out of bounds access in __vxlan_find_mac
  net: dsa: mv88e6xxx: fix port VLAN maps
  fib_trie: Fix shift by 32 in fib_table_lookup
  net: moxart: use correct accessors for DMA memory
  ipv4: ipconfig: avoid unused ic_proto_used symbol
  bnxt_en: Fix crash in bnxt_free_tx_skbs() during tx timeout.
  bnxt_en: Exclude rx_drop_pkts hw counter from the stack's rx_dropped counter.
  bnxt_en: Ring free response from close path should use completion ring
  net_sched: drr: check for NULL pointer in drr_dequeue
  ...

1 files changed, 8 insertions, 5 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 5ced3e4013e3..a4d523709ab3 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -707,7 +707,8 @@ release_sk1:
    outside socket context is ugly, certainly. What can I do?
  */
 
-static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
+static void tcp_v4_send_ack(struct net *net,
+                            struct sk_buff *skb, u32 seq, u32 ack,
                             u32 win, u32 tsval, u32 tsecr, int oif,
                             struct tcp_md5sig_key *key,
                             int reply_flags, u8 tos)
@@ -722,7 +723,6 @@ static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
                         ];
         } rep;
         struct ip_reply_arg arg;
-        struct net *net = dev_net(skb_dst(skb)->dev);
 
         memset(&rep.th, 0, sizeof(struct tcphdr));
         memset(&arg, 0, sizeof(arg));
@@ -784,7 +784,8 @@ static void tcp_v4_timewait_ack(struct sock *sk, struct sk_buff *skb)
         struct inet_timewait_sock *tw = inet_twsk(sk);
         struct tcp_timewait_sock *tcptw = tcp_twsk(sk);
 
-        tcp_v4_send_ack(skb, tcptw->tw_snd_nxt, tcptw->tw_rcv_nxt,
+        tcp_v4_send_ack(sock_net(sk), skb,
+                        tcptw->tw_snd_nxt, tcptw->tw_rcv_nxt,
                         tcptw->tw_rcv_wnd >> tw->tw_rcv_wscale,
                         tcp_time_stamp + tcptw->tw_ts_offset,
                         tcptw->tw_ts_recent,
@@ -803,8 +804,10 @@ static void tcp_v4_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb,
         /* sk->sk_state == TCP_LISTEN -> for regular TCP_SYN_RECV
          * sk->sk_state == TCP_SYN_RECV -> for Fast Open.
          */
-        tcp_v4_send_ack(skb, (sk->sk_state == TCP_LISTEN) ?
-                        tcp_rsk(req)->snt_isn + 1 : tcp_sk(sk)->snd_nxt,
+        u32 seq = (sk->sk_state == TCP_LISTEN) ? tcp_rsk(req)->snt_isn + 1 :
+                                             tcp_sk(sk)->snd_nxt;
+
+        tcp_v4_send_ack(sock_net(sk), skb, seq,
                         tcp_rsk(req)->rcv_nxt, req->rsk_rcv_wnd,
                         tcp_time_stamp,
                         req->ts_recent,