[IPV6]: Reset the network header in ip6_nd_hdr

ip6_nd_hdr is always called immediately after a alloc_skb + skb_reserve
sequence, i.e. when skb->tail is equal to skb->data, making it correct to use
skb_reset_network_header().

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 49523c2a9f10..32e8c3f73c79 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -263,7 +263,8 @@ int ip6_nd_hdr(struct sock *sk, struct sk_buff *skb, struct net_device *dev,
 
         totlen = len + sizeof(struct ipv6hdr);
 
-        skb->nh.raw = skb_put(skb, sizeof(struct ipv6hdr));
+        skb_reset_network_header(skb);
+        skb_put(skb, sizeof(struct ipv6hdr));
         hdr = ipv6_hdr(skb);
 
         *(__be32*)hdr = htonl(0x60000000);