From patchwork Tue Feb 5 11:48:05 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [net-next] ipv6: Don't send packet to big messages to self From: Steffen Klassert X-Patchwork-Id: 218253 Message-Id: <20130205114804.GH23291@secunet.com> To: David Miller Cc: Jiri Bohac , netdev@vger.kernel.org Date: Tue, 5 Feb 2013 12:48:05 +0100 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 Signed-off-by: Steffen Klassert --- net/ipv6/ip6_output.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 7dea45a..14fee26 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -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;