[IPV6]: Replace sk_buff ** with sk_buff * in input handlers

With all the users of the double pointers removed from the IPv6 input path,
this patch converts all occurances of sk_buff ** to sk_buff * in IPv6 input
handlers.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/tunnel6.c b/net/ipv6/tunnel6.c
index 23e2809..6323921 100644
--- a/net/ipv6/tunnel6.c
+++ b/net/ipv6/tunnel6.c
@@ -87,9 +87,8 @@
 
 EXPORT_SYMBOL(xfrm6_tunnel_deregister);
 
-static int tunnel6_rcv(struct sk_buff **pskb)
+static int tunnel6_rcv(struct sk_buff *skb)
 {
-	struct sk_buff *skb = *pskb;
 	struct xfrm6_tunnel *handler;
 
 	if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
@@ -106,9 +105,8 @@
 	return 0;
 }
 
-static int tunnel46_rcv(struct sk_buff **pskb)
+static int tunnel46_rcv(struct sk_buff *skb)
 {
-	struct sk_buff *skb = *pskb;
 	struct xfrm6_tunnel *handler;
 
 	if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))