netns xfrm: AH/ESP in netns!

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index 6ae014b..52449f7 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -407,6 +407,7 @@
 static void ah6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 		    int type, int code, int offset, __be32 info)
 {
+	struct net *net = dev_net(skb->dev);
 	struct ipv6hdr *iph = (struct ipv6hdr*)skb->data;
 	struct ip_auth_hdr *ah = (struct ip_auth_hdr*)(skb->data+offset);
 	struct xfrm_state *x;
@@ -415,7 +416,7 @@
 	    type != ICMPV6_PKT_TOOBIG)
 		return;
 
-	x = xfrm_state_lookup(&init_net, (xfrm_address_t *)&iph->daddr, ah->spi, IPPROTO_AH, AF_INET6);
+	x = xfrm_state_lookup(net, (xfrm_address_t *)&iph->daddr, ah->spi, IPPROTO_AH, AF_INET6);
 	if (!x)
 		return;