Commit 1542272a authored Dec 14, 2005 by Herbert Xu Committed by David S. Miller Dec 14, 2005

[GRE]: Fix hardware checksum modification



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>

parent acd9b7b4

net/ipv4/ip_gre.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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