[NET] snap: needs hardware checksum fix

The SNAP code pops off it's 5 byte header, but doesn't adjust
the checksum. This would cause problems when using device that
does IP over SNAP and hardware receive checksums.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/802/psnap.c b/net/802/psnap.c
index 4d63894..34e4296 100644 (file)
--- a/net/802/psnap.c
+++ b/net/802/psnap.c
@@ -59,8 +59,10 @@ static int snap_rcv(struct sk_buff *skb, struct net_device *dev,
        proto = find_snap_client(skb->h.raw);
        if (proto) {
                /* Pass the frame on. */
+               u8 *hdr = skb->data;
                skb->h.raw  += 5;
                skb_pull(skb, 5);
+               skb_postpull_rcsum(skb, hdr, 5);
                rc = proto->rcvfunc(skb, dev, &snap_packet_type, orig_dev);
        } else {
                skb->sk = NULL;