From 1542272a60ab9c0655a13ead8b7d7a661365f9fb Mon Sep 17 00:00:00 2001 From: Herbert Xu <herbert@gondor.apana.org.au> Date: Wed, 14 Dec 2005 12:55:24 -0800 Subject: [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> --- net/ipv4/ip_gre.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index a4c347c3..46f9d9c 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -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 -- cgit v1.1 From a388442c3798a345d131ff8b9d6dea0bfda3fefc Mon Sep 17 00:00:00 2001 From: Stephen Hemminger <shemminger@osdl.org> Date: Wed, 14 Dec 2005 16:23:16 -0800 Subject: [VLAN]: Fix hardware rx csum errors Receiving VLAN packets over a device (without VLAN assist) that is doing hardware checksumming (CHECKSUM_HW), causes errors because the VLAN code forgets to adjust the hardware checksum. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net> --- net/8021q/vlan_dev.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index b748648..f2a8750 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -165,6 +165,9 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev, skb_pull(skb, VLAN_HLEN); /* take off the VLAN header (4 bytes currently) */ + /* Need to correct hardware checksum */ + skb_postpull_rcsum(skb, vhdr, VLAN_HLEN); + /* Ok, lets check to make sure the device (dev) we * came in on is what this VLAN is attached to. */ -- cgit v1.1