[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 (file)
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -273,6 +273,7 @@ static unsigned int rt_hash_code(u32 daddr, u32 saddr)
 
 #ifdef CONFIG_PROC_FS
 struct rt_cache_iter_state {
+       struct seq_net_private p;
        int bucket;
        int genid;
 };
@@ -285,7 +286,8 @@ static struct rtable *rt_cache_get_first(struct rt_cache_iter_state *st)
                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 @@ static struct rtable *rt_cache_get_next(struct rt_cache_iter_state *st,
                                        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 const struct seq_operations rt_cache_seq_ops = {
 
 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 @@ static const struct file_operations rt_cache_seq_fops = {
        .open    = rt_cache_seq_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
-       .release = seq_release_private,
+       .release = seq_release_net,
 };