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authorDavid McCullough <david_mccullough@mcafee.com>2010-11-29 19:32:34 +0000
committerDavid S. Miller <davem@davemloft.net>2010-12-01 13:19:34 -0800
commit6dcdd1b3694a4fa2b85167a9c860c7613a7553c7 (patch)
tree4a0d21dbaf8d502c2b91777457065a9131b1eb9b /net
parentd13a2cb63d06fe2e3067c7d40f9a5946abd614c8 (diff)
downloadlinux-6dcdd1b3694a4fa2b85167a9c860c7613a7553c7.tar.bz2
net/ipv6/sit.c: return unhandled skb to tunnel4_rcv
I found a problem using an IPv6 over IPv4 tunnel. When CONFIG_IPV6_SIT was enabled, the packets would be rejected as net/ipv6/sit.c was catching all IPPROTO_IPV6 packets and returning an ICMP port unreachable error. I think this patch fixes the problem cleanly. I believe the code in net/ipv4/tunnel4.c:tunnel4_rcv takes care of it properly if none of the handlers claim the skb. Signed-off-by: David McCullough <david_mccullough@mcafee.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/sit.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index d6bfaec3bbbf..8c4d00c7cd2b 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -606,8 +606,9 @@ static int ipip6_rcv(struct sk_buff *skb)
return 0;
}
- icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0);
+ /* no tunnel matched, let upstream know, ipsec may handle it */
rcu_read_unlock();
+ return 1;
out:
kfree_skb(skb);
return 0;