diff options
Diffstat (limited to 'net/ipv4/xfrm4_mode_tunnel.c')
| -rw-r--r-- | net/ipv4/xfrm4_mode_tunnel.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c index 4872b30ba5d..f09055d3a76 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; |