netns xfrm: dst garbage-collecting in netns

Pass netns pointer to struct xfrm_policy_afinfo::garbage_collect()

	[This needs more thoughts on what to do with dst_ops]
	[Currently stub to init_net]

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 36c8cff..bd25150 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -265,7 +265,7 @@
 struct xfrm_policy_afinfo {
 	unsigned short		family;
 	struct dst_ops		*dst_ops;
-	void			(*garbage_collect)(void);
+	void			(*garbage_collect)(struct net *net);
 	struct dst_entry	*(*dst_lookup)(int tos, xfrm_address_t *saddr,
 					       xfrm_address_t *daddr);
 	int			(*get_saddr)(xfrm_address_t *saddr, xfrm_address_t *daddr);