[NETNS]: Process /proc/net/rt_cache inside a namespace.
Show routing cache for a particular namespace only.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index f9654f2..af0b23a 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -273,6 +273,7 @@
#ifdef CONFIG_PROC_FS
struct rt_cache_iter_state {
+ struct seq_net_private p;
int bucket;
int genid;
};
@@ -285,7 +286,8 @@
rcu_read_lock_bh();
r = rcu_dereference(rt_hash_table[st->bucket].chain);
while (r) {
- if (r->rt_genid == st->genid)
+ if (r->u.dst.dev->nd_net == st->p.net &&
+ r->rt_genid == st->genid)
return r;
r = rcu_dereference(r->u.dst.rt_next);
}
@@ -312,6 +314,8 @@
struct rtable *r)
{
while ((r = __rt_cache_get_next(st, r)) != NULL) {
+ if (r->u.dst.dev->nd_net != st->p.net)
+ continue;
if (r->rt_genid == st->genid)
break;
}
@@ -398,7 +402,7 @@
static int rt_cache_seq_open(struct inode *inode, struct file *file)
{
- return seq_open_private(file, &rt_cache_seq_ops,
+ return seq_open_net(inode, file, &rt_cache_seq_ops,
sizeof(struct rt_cache_iter_state));
}
@@ -407,7 +411,7 @@
.open = rt_cache_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release_private,
+ .release = seq_release_net,
};