diff options
| author |   Eric Dumazet <edumazet@google.com> | 2012-08-06 05:09:33 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-08-06 13:33:21 -0700 |
| commit | 5d299f3d3c8a2fbc732b1bf03af36333ccec3130 (patch) | |
| tree | 119701591725281d99ecad6f459166da3e6034a2 /net/ipv4/tcp_ipv4.c | |
| parent | net: Use PTR_RET rather than if(IS_ERR(.. [1] (diff) | |
| download | linux-dev-5d299f3d3c8a2fbc732b1bf03af36333ccec3130.tar.xz linux-dev-5d299f3d3c8a2fbc732b1bf03af36333ccec3130.zip | |
net: ipv6: fix TCP early demux
IPv6 needs a cookie in dst_check() call.
We need to add rx_dst_cookie and provide a family independent
sk_rx_dst_set(sk, skb) method to properly support IPv6 TCP early demux.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 42b2a6a73092..272241f16fcb 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1627,9 +1627,6 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb) sk->sk_rx_dst = NULL; } } - if (unlikely(sk->sk_rx_dst == NULL)) - inet_sk_rx_dst_set(sk, skb); - if (tcp_rcv_established(sk, skb, tcp_hdr(skb), skb->len)) { rsk = sk; goto reset; @@ -1872,10 +1869,20 @@ static struct timewait_sock_ops tcp_timewait_sock_ops = { .twsk_destructor= tcp_twsk_destructor, }; +static void inet_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb) +{ + struct dst_entry *dst = skb_dst(skb); + + dst_hold(dst); + sk->sk_rx_dst = dst; + inet_sk(sk)->rx_dst_ifindex = skb->skb_iif; +} + const struct inet_connection_sock_af_ops ipv4_specific = { .queue_xmit = ip_queue_xmit, .send_check = tcp_v4_send_check, .rebuild_header = inet_sk_rebuild_header, + .sk_rx_dst_set = inet_sk_rx_dst_set, .conn_request = tcp_v4_conn_request, .syn_recv_sock = tcp_v4_syn_recv_sock, .net_header_len = sizeof(struct iphdr), |