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authorArnaldo Carvalho de Melo <acme@redhat.com>2007-03-10 12:40:27 -0300
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:24:37 -0700
commit39f69c6f922fbfb51e1ff24c9e196584a79f1484 (patch)
tree2d68a730ba5b89f895c28489872a1eea3b37db5a /net/ipv6/xfrm6_mode_tunnel.c
parent[SK_BUFF]: Introduce skb_set_mac_header() (diff)
downloadlinux-dev-39f69c6f922fbfb51e1ff24c9e196584a79f1484.tar.xz
linux-dev-39f69c6f922fbfb51e1ff24c9e196584a79f1484.zip
[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/ipv6/xfrm6_mode_tunnel.c')
-rw-r--r--net/ipv6/xfrm6_mode_tunnel.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv6/xfrm6_mode_tunnel.c b/net/ipv6/xfrm6_mode_tunnel.c
index 0bc866c0d83c..d2c560c181a1 100644
--- a/net/ipv6/xfrm6_mode_tunnel.c
+++ b/net/ipv6/xfrm6_mode_tunnel.c
@@ -86,6 +86,7 @@ static int xfrm6_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
{
int err = -EINVAL;
+ const unsigned char *old_mac;
if (skb->nh.raw[IP6CB(skb)->nhoff] != IPPROTO_IPV6
&& skb->nh.raw[IP6CB(skb)->nhoff] != IPPROTO_IPIP)
@@ -107,8 +108,9 @@ static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
ip6ip_ecn_decapsulate(skb);
skb->protocol = htons(ETH_P_IP);
}
- 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;