netns xfrm: lookup in netns

Pass netns to xfrm_lookup()/__xfrm_lookup(). For that pass netns
to flow_cache_lookup() and resolver callback.

Take it from socket or netdevice. Stub DECnet to init_net.

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

1 files changed, 3 insertions, 2 deletions

diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index ef249ab5c93c..58e2b0d93758 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -846,6 +846,7 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
                          int encap_limit,
                          __u32 *pmtu)
 {
+        struct net *net = dev_net(dev);
         struct ip6_tnl *t = netdev_priv(dev);
         struct net_device_stats *stats = &t->dev->stats;
         struct ipv6hdr *ipv6h = ipv6_hdr(skb);
@@ -861,9 +862,9 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
         if ((dst = ip6_tnl_dst_check(t)) != NULL)
                 dst_hold(dst);
         else {
-                dst = ip6_route_output(dev_net(dev), NULL, fl);
+                dst = ip6_route_output(net, NULL, fl);
 
-                if (dst->error || xfrm_lookup(&dst, fl, NULL, 0) < 0)
+                if (dst->error || xfrm_lookup(net, &dst, fl, NULL, 0) < 0)
                         goto tx_err_link_failure;
         }