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,