Commit 32aced75 authored Mar 28, 2008 by Rusty Russell Committed by David S. Miller Mar 28, 2008

[NET]: Don't send ICMP_FRAG_NEEDED for GSO packets



Commit 9af3912e ("[NET] Move DF check
to ip_forward") added a new check to send ICMP fragmentation needed
for large packets.

Unlike the check in ip_finish_output(), it doesn't check for GSO.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent d41a95e0

net/ipv4/ip_forward.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -85,7 +85,7 @@ int ip_forward(struct sk_buff *skb)
		if (opt->is_strictroute && rt->rt_dst != rt->rt_gateway)
		goto sr_failed;

		if (unlikely(skb->len > dst_mtu(&rt->u.dst) &&
		if (unlikely(skb->len > dst_mtu(&rt->u.dst) && !skb_is_gso(skb) &&
		(ip_hdr(skb)->frag_off & htons(IP_DF))) && !skb->local_df) {
		IP_INC_STATS(IPSTATS_MIB_FRAGFAILS);
		icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,