netns xfrm: per-netns NETLINK_XFRM socket

Stub senders to init_net's one temporarily.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index dc50f1e..ba90e5e 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -41,6 +41,7 @@
 {
 	struct dst_entry *dst = skb->dst;
 	struct xfrm_state *x = dst->xfrm;
+	struct net *net = xs_net(x);
 
 	if (err <= 0)
 		goto resume;
@@ -74,7 +75,7 @@
 				err = -EOVERFLOW;
 				goto error;
 			}
-			if (xfrm_aevent_is_on())
+			if (xfrm_aevent_is_on(net))
 				xfrm_replay_notify(x, XFRM_REPLAY_UPDATE);
 		}