Commit f4e53e29 authored Feb 05, 2013 by Steffen Klassert Committed by David S. Miller Feb 06, 2013

ipv6: Don't send packet to big messages to self



Calling icmpv6_send() on a local message size error leads to an
incorrect update of the path mtu in the case when IPsec is used.
So use ipv6_local_error() instead to notify the socket about the
error.

Reported-by: Jiri Bohac <jbohac@suse.cz>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent efc496eb

net/ipv6/ip6_output.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -242,9 +242,8 @@ int ip6_xmit(struct sock sk, struct sk_buff skb, struct flowi6 *fl6,
		dst->dev, dst_output);
		}

		net_dbg_ratelimited("IPv6: sending pkt_too_big to self\n");
		skb->dev = dst->dev;
		icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
		ipv6_local_error(sk, EMSGSIZE, fl6, mtu);
		IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_FRAGFAILS);
		kfree_skb(skb);
		return -EMSGSIZE;