diff options
| author | Eric Dumazet <edumazet@google.com> | 2015-03-13 15:51:10 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-03-14 15:05:10 -0400 |
| commit | 16f86165bd0a94a96ab99629828cc9057db50221 (patch) | |
| tree | abb1a7c6f69f2f424dd08e035091945d252dd141 /net | |
| parent | a3795208b9a9801a66b305395e9ebaae850eee03 (diff) | |
| download | linux-16f86165bd0a94a96ab99629828cc9057db50221.tar.gz | |
inet: fill request sock ir_iif for IPv4
Once request socks will be in ehash table, they will need to have
a valid ir_iff field.
This is currently true only for IPv6. This patch extends support
for IPv4 as well.
This means inet_diag_fill_req() can now properly use ir_iif,
which is better for IPv6 link locals anyway, as request sockets
and established sockets will propagate consistent netlink idiag_if.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/dccp/ipv4.c | 1 | ||||
| -rw-r--r-- | net/ipv4/inet_diag.c | 2 | ||||
| -rw-r--r-- | net/ipv4/syncookies.c | 2 | ||||
| -rw-r--r-- | net/ipv4/tcp_input.c | 3 | ||||
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 2 |
5 files changed, 7 insertions, 3 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index 8f6f4004daac..7f6456afbaec 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -643,6 +643,7 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb) ireq->ir_rmt_addr = ip_hdr(skb)->saddr; write_pnet(&ireq->ireq_net, sock_net(sk)); ireq->ireq_family = AF_INET; + ireq->ir_iif = sk->sk_bound_dev_if; /* * Step 3: Process LISTEN state diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c index 43789c99031f..e1e4d8c0384a 100644 --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -733,7 +733,7 @@ static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk, r->idiag_timer = 1; r->idiag_retrans = req->num_retrans; - r->id.idiag_if = sk->sk_bound_dev_if; + r->id.idiag_if = ireq->ir_iif; BUILD_BUG_ON(offsetof(struct inet_request_sock, ir_cookie) != offsetof(struct sock, sk_cookie)); diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c index 0c432730c7b4..f17db898ed26 100644 --- a/net/ipv4/syncookies.c +++ b/net/ipv4/syncookies.c @@ -349,6 +349,8 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb) write_pnet(&ireq->ireq_net, sock_net(sk)); ireq->ireq_family = AF_INET; + ireq->ir_iif = sk->sk_bound_dev_if; + /* We throwed the options of the initial SYN away, so we hope * the ACK carries the same options again (see RFC1122 4.2.3.8) */ diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index da61a8e75f68..717d437b6ce1 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -5967,6 +5967,9 @@ int tcp_conn_request(struct request_sock_ops *rsk_ops, tcp_openreq_init(req, &tmp_opt, skb, sk); write_pnet(&inet_rsk(req)->ireq_net, sock_net(sk)); + /* Note: tcp_v6_init_req() might override ir_iif for link locals */ + inet_rsk(req)->ir_iif = sk->sk_bound_dev_if; + af_ops->init_req(req, sk, skb); if (security_inet_conn_request(sk, skb, req)) diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index c5fc6a5e4adc..d89f028dc8c4 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -734,8 +734,6 @@ static void tcp_v6_init_req(struct request_sock *req, struct sock *sk, ireq->ir_v6_rmt_addr = ipv6_hdr(skb)->saddr; ireq->ir_v6_loc_addr = ipv6_hdr(skb)->daddr; - ireq->ir_iif = sk->sk_bound_dev_if; - /* So that link locals have meaning */ if (!sk->sk_bound_dev_if && ipv6_addr_type(&ireq->ir_v6_rmt_addr) & IPV6_ADDR_LINKLOCAL) |