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

Commit 9af3912ec9 ("[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>
hifive-unleashed-5.1
Rusty Russell 2008-03-28 16:23:19 -07:00 committed by David S. Miller
parent d41a95e04a
commit 32aced7509
1 changed files with 1 additions and 1 deletions
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2
net/ipv4/ip_forward.c
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@ -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,