[PATCH 4.9 13/52] Revert "sit: reload iphdr in ipip6_rcv"

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David S. Miller <davem@xxxxxxxxxxxxx>

commit f4eb17e1efe538d4da7d574bedb00a8dafcc26b7 upstream.

This reverts commit b699d0035836f6712917a41e7ae58d84359b8ff9.

As per Eric Dumazet, the pskb_may_pull() is a NOP in this
particular case, so the 'iph' reload is unnecessary.

Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Luca Boccassi <luca.boccassi@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 net/ipv6/sit.c |    1 -
 1 file changed, 1 deletion(-)

--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -659,7 +659,6 @@ static int ipip6_rcv(struct sk_buff *skb
 		if (iptunnel_pull_header(skb, 0, htons(ETH_P_IPV6),
 		    !net_eq(tunnel->net, dev_net(tunnel->dev))))
 			goto out;
-		iph = ip_hdr(skb);
 
 		err = IP_ECN_decapsulate(iph, skb);
 		if (unlikely(err)) {