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Commit 0aa68271 authored by Herbert Xu's avatar Herbert Xu Committed by David S. Miller
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ipv6: Add GSO support on forwarding path 



Currently we disallow GSO packets on the IPv6 forward path.
This patch fixes this.

Note that I discovered that our existing GSO MTU checks (e.g.,
IPv4 forwarding) are buggy in that they skip the check altogether,
when they really should be checking gso_size + header instead.

I have also been lazy here in that I haven't bothered to segment
the GSO packet by hand before generating an ICMP message.  Someone
should add that to be 100% correct.

Reported-by: default avatarRalf Baechle <ralf@linux-mips.org>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a4731138

net/ipv6/ip6_output.c

+1 −1
Original line number Diff line number Diff line
@@ -507,7 +507,7 @@ int ip6_forward(struct sk_buff *skb) 
	if (mtu < IPV6_MIN_MTU)

		mtu = IPV6_MIN_MTU;



	if (skb->len > mtu) {

	if (skb->len > mtu && !skb_is_gso(skb)) {

		/* Again, force OUTPUT device used as source address */

		skb->dev = dst->dev;

		icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);