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| author | Patrick McHardy <kaber@trash.net> | 2007-06-04 21:32:46 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-06-07 13:38:51 -0700 |
| commit | f0e48dbfc5c74e967fea4c0fd0c5ad07557ae0c8 (patch) | |
| tree | 3e082e8946855e6a21f1f65582eb308b1cec0ed1 | |
| parent | b91b9fd11210a7023f37eaee1e977ad9ce532095 (diff) | |
| download | lwn-f0e48dbfc5c74e967fea4c0fd0c5ad07557ae0c8.tar.gz lwn-f0e48dbfc5c74e967fea4c0fd0c5ad07557ae0c8.zip | |
[TCP]: Honour sk_bound_dev_if in tcp_v4_send_ack
A time_wait socket inherits sk_bound_dev_if from the original socket,
but it is not used when sending ACK packets using ip_send_reply.
Fix by passing the oif to ip_send_reply in struct ip_reply_arg and
use it for output routing.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/ip.h | 1 | ||||
| -rw-r--r-- | net/ipv4/ip_output.c | 4 | ||||
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 2 |
3 files changed, 6 insertions, 1 deletions
diff --git a/include/net/ip.h b/include/net/ip.h index bb207db03675..abf2820a1125 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -143,6 +143,7 @@ struct ip_reply_arg { __wsum csum; int csumoffset; /* u16 offset of csum in iov[0].iov_base */ /* -1 if not needed */ + int bound_dev_if; }; void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *arg, diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index d6427d918512..34ea4547ebbe 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -1352,7 +1352,8 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar } { - struct flowi fl = { .nl_u = { .ip4_u = + struct flowi fl = { .oif = arg->bound_dev_if, + .nl_u = { .ip4_u = { .daddr = daddr, .saddr = rt->rt_spec_dst, .tos = RT_TOS(ip_hdr(skb)->tos) } }, @@ -1376,6 +1377,7 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar inet->tos = ip_hdr(skb)->tos; sk->sk_priority = skb->priority; sk->sk_protocol = ip_hdr(skb)->protocol; + sk->sk_bound_dev_if = arg->bound_dev_if; ip_append_data(sk, ip_reply_glue_bits, arg->iov->iov_base, len, 0, &ipc, rt, MSG_DONTWAIT); if ((skb = skb_peek(&sk->sk_write_queue)) != NULL) { diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 47c61055eb60..97e294e82679 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -705,6 +705,8 @@ static void tcp_v4_send_ack(struct tcp_timewait_sock *twsk, ip_hdr(skb)->saddr, /* XXX */ arg.iov[0].iov_len, IPPROTO_TCP, 0); arg.csumoffset = offsetof(struct tcphdr, check) / 2; + if (twsk) + arg.bound_dev_if = twsk->tw_sk.tw_bound_dev_if; ip_send_reply(tcp_socket->sk, skb, &arg, arg.iov[0].iov_len); |