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authorArnaldo Carvalho de Melo <acme@redhat.com>2007-03-10 18:40:27 +0300
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-26 09:24:37 +0400
commit39f69c6f922fbfb51e1ff24c9e196584a79f1484 (patch)
tree2d68a730ba5b89f895c28489872a1eea3b37db5a /net/ipv4/xfrm4_mode_tunnel.c
parent48d49d0ccdaa9caff4636ef9c3410973d28131b5 (diff)
downloadlinux-39f69c6f922fbfb51e1ff24c9e196584a79f1484.tar.xz
[SK_BUFF] xfrm: Use skb_set_mac_header in the memmove cases
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/xfrm4_mode_tunnel.c')
-rw-r--r--net/ipv4/xfrm4_mode_tunnel.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index 4872b30ba5d8..f09055d3a768 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -91,6 +91,7 @@ static int xfrm4_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
static int xfrm4_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
{
struct iphdr *iph = skb->nh.iph;
+ const unsigned char *old_mac;
int err = -EINVAL;
switch (iph->protocol){
@@ -125,8 +126,9 @@ static int xfrm4_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
skb->protocol = htons(ETH_P_IPV6);
}
#endif
- skb->mac.raw = memmove(skb->data - skb->mac_len,
- skb->mac.raw, skb->mac_len);
+ old_mac = skb->mac.raw;
+ skb_set_mac_header(skb, -skb->mac_len);
+ memmove(skb->mac.raw, old_mac, skb->mac_len);
skb->nh.raw = skb->data;
err = 0;