commit 1a9e9ef684ec2bd27fcdb373a82957a0c050daf6
author Herbert Xu <herbert@gondor.apana.org.au> Wed Sep 27 19:03:36 2006 -0700
committer David S. Miller <davem@sunset.davemloft.net> Thu Sep 28 18:02:45 2006 -0700
tree ffe9696b24a6d62de6c61f20233224e7f8aefcb6
parent 8122adf06e6f93ae608cf8227e878cc44f4a8fd1

[IPV6]: Disable SG for GSO unless we have checksum

Because the system won't turn off the SG flag for us we
need to do this manually on the IPv6 path.  Otherwise we
will throw IPv6 packets with bad checksums at the hardware.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv6/ipv6_sockglue.c

diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 4f3bb7f..de6b919 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -123,6 +123,9 @@
 	struct ipv6hdr *ipv6h;
 	struct inet6_protocol *ops;
 
+	if (!(features & NETIF_F_HW_CSUM))
+		features &= ~NETIF_F_SG;
+
 	if (unlikely(skb_shinfo(skb)->gso_type &
 		     ~(SKB_GSO_UDP |
 		       SKB_GSO_DODGY |