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bridge: correct IPv6 checksum after pull 

Bridge multicast snooping of ICMPv6 would incorrectly report a checksum problem
when used with Ethernet devices like sky2 that use CHECKSUM_COMPLETE.
When bytes are removed from skb, the computed checksum needs to be adjusted.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Tested-by: Martin Volf <martin.volf.42@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2011-11-15 08:09:14 +00:00 committed by David S. Miller
parent 0284a0fdf3
commit fa2da8cdae
1 changed files with 2 additions and 0 deletions
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2
net/bridge/br_multicast.c
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@ -1501,6 +1501,8 @@ static int br_multicast_ipv6_rcv(struct net_bridge *br,
__skb_pull(skb2, offset);
skb_reset_transport_header(skb2);
skb_postpull_rcsum(skb2, skb_network_header(skb2),
skb_network_header_len(skb2));
icmp6_type = icmp6_hdr(skb2)->icmp6_type;