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inet: fill request sock ir_iif for IPv4

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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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eric Dumazet 2015-03-13 15:51:10 -07:00 • committed by David S. Miller
commit 16f86165bd
5 changed files with 7 additions and 3 deletions
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1
net/dccp/ipv4.c
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@ -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