netns xfrm: policy walking in netns

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

include/net/xfrm.h

@@ -1435,7 +1435,7 @@ static inline int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb)
 struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp);
 
 extern void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8 type);
-extern int xfrm_policy_walk(struct xfrm_policy_walk *walk,
+extern int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk,
 	int (*func)(struct xfrm_policy *, int, int, void*), void *);
 extern void xfrm_policy_walk_done(struct xfrm_policy_walk *walk);
 int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl);

net/key/af_key.c

@@ -1846,7 +1846,7 @@ static u32 gen_reqid(void)
 		if (reqid == 0)
 			reqid = IPSEC_MANUAL_REQID_MAX+1;
 		xfrm_policy_walk_init(&walk, XFRM_POLICY_TYPE_MAIN);
-		rc = xfrm_policy_walk(&walk, check_reqid, (void*)&reqid);
+		rc = xfrm_policy_walk(&init_net, &walk, check_reqid, (void*)&reqid);
 		xfrm_policy_walk_done(&walk);
 		if (rc != -EEXIST)
 			return reqid;
@@ -2633,7 +2633,7 @@ static int dump_sp(struct xfrm_policy *xp, int dir, int count, void *ptr)
 
 static int pfkey_dump_sp(struct pfkey_sock *pfk)
 {
-	return xfrm_policy_walk(&pfk->dump.u.policy, dump_sp, (void *) pfk);
+	return xfrm_policy_walk(&init_net, &pfk->dump.u.policy, dump_sp, (void *) pfk);
 }
 
 static void pfkey_dump_sp_done(struct pfkey_sock *pfk)

net/xfrm/xfrm_policy.c

@@ -851,7 +851,7 @@ out:
 }
 EXPORT_SYMBOL(xfrm_policy_flush);
 
-int xfrm_policy_walk(struct xfrm_policy_walk *walk,
+int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk,
 		     int (*func)(struct xfrm_policy *, int, int, void*),
 		     void *data)
 {
@@ -868,10 +868,10 @@ int xfrm_policy_walk(struct xfrm_policy_walk *walk,
 
 	write_lock_bh(&xfrm_policy_lock);
 	if (list_empty(&walk->walk.all))
-		x = list_first_entry(&init_net.xfrm.policy_all, struct xfrm_policy_walk_entry, all);
+		x = list_first_entry(&net->xfrm.policy_all, struct xfrm_policy_walk_entry, all);
 	else
 		x = list_entry(&walk->walk.all, struct xfrm_policy_walk_entry, all);
-	list_for_each_entry_from(x, &init_net.xfrm.policy_all, all) {
+	list_for_each_entry_from(x, &net->xfrm.policy_all, all) {
 		if (x->dead)
 			continue;
 		pol = container_of(x, struct xfrm_policy, walk);

net/xfrm/xfrm_user.c

@@ -1279,7 +1279,7 @@ static int xfrm_dump_policy(struct sk_buff *skb, struct netlink_callback *cb)
 		xfrm_policy_walk_init(walk, XFRM_POLICY_TYPE_ANY);
 	}
 
-	(void) xfrm_policy_walk(walk, dump_one_policy, &info);
+	(void) xfrm_policy_walk(&init_net, walk, dump_one_policy, &info);
 
 	return skb->len;
 }