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[GRE]: Fix hardware checksum modification

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The skb_postpull_rcsum introduced a bug to the checksum modification.
Although the length pulled is offset bytes, the origin of the pulling
is the GRE header, not the IP header.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2005-12-14 12:55:24 -08:00 committed by David S. Miller
parent acd9b7b4e0
commit 1542272a60
1 changed files with 1 additions and 1 deletions
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2
net/ipv4/ip_gre.c
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@ -618,7 +618,7 @@ static int ipgre_rcv(struct sk_buff *skb)
skb->mac.raw = skb->nh.raw;
skb->nh.raw = __pskb_pull(skb, offset);
skb_postpull_rcsum(skb, skb->mac.raw, offset);
skb_postpull_rcsum(skb, skb->h.raw, offset);
memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options));
skb->pkt_type = PACKET_HOST;
#ifdef CONFIG_NET_IPGRE_BROADCAST