[IPV6]: Mischecked tw match in __inet6_check_established.
When looking for a conflicting connection the !sk->sk_bound_dev_if
check is performed only for live sockets, but not for timewait-ed.
This is not the case for ipv4, for __inet6_lookup_established in
both ipv4 and ipv6 and for other places that check for tw-s.
Was this missed accidentally? If so, then this patch fixes it and
besides makes use if the dif variable declared in the function.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c
index adc73ad..0765d8b 100644
--- a/net/ipv6/inet6_hashtables.c
+++ b/net/ipv6/inet6_hashtables.c
@@ -193,7 +193,7 @@
sk2->sk_family == PF_INET6 &&
ipv6_addr_equal(&tw6->tw_v6_daddr, saddr) &&
ipv6_addr_equal(&tw6->tw_v6_rcv_saddr, daddr) &&
- sk2->sk_bound_dev_if == sk->sk_bound_dev_if) {
+ (!sk2->sk_bound_dev_if || sk2->sk_bound_dev_if == dif)) {
if (twsk_unique(sk, sk2, twp))
goto unique;
else