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authorStephen Hemminger <shemminger@linux-foundation.org>2007-06-27 07:47:37 (GMT)
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-11 05:15:52 (GMT)
commitd212f87b068c9d72065ef579d85b5ee6b8b59381 (patch)
treea194d5c667c277c7ea5392c9cf97857a0cd1d321 /net/ipv4/af_inet.c
parentd3d6dd3adaaad71eae20902ed81808a66a40a5b9 (diff)
downloadlinux-d212f87b068c9d72065ef579d85b5ee6b8b59381.tar.xz
[NET]: IPV6 checksum offloading in network devices
The existing model for checksum offload does not correctly handle devices that can offload IPV4 and IPV6 only. The NETIF_F_HW_CSUM flag implies device can do any arbitrary protocol. This patch: * adds NETIF_F_IPV6_CSUM for those devices * fixes bnx2 and tg3 devices that need it * add NETIF_F_IPV6_CSUM to ipv6 output (incl GSO) * fixes assumptions about NETIF_F_ALL_CSUM in nat * adjusts bridge union of checksumming computation Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/af_inet.c')
-rw-r--r--net/ipv4/af_inet.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 041fba3..06c08e5 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1170,6 +1170,9 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb, int features)
int ihl;
int id;
+ if (!(features & NETIF_F_V4_CSUM))
+ features &= ~NETIF_F_SG;
+
if (unlikely(skb_shinfo(skb)->gso_type &
~(SKB_GSO_TCPV4 |
SKB_GSO_UDP |