[NETNS]: Pass correct namespace in ip_route_input_slow.

The packet on the input path always has a referrence to an input
network device it is passed from. Extract network namespace from it.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 3 deletions

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index a7651c64bb48..f988ae39c4c2 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1881,6 +1881,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
         __be32          spec_dst;
         int             err = -EINVAL;
         int             free_res = 0;
+        struct net    * net = dev->nd_net;
 
         /* IP on this device is disabled. */
 
@@ -1911,7 +1912,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
         /*
          *      Now we are ready to route packet.
          */
-        if ((err = fib_lookup(&init_net, &fl, &res)) != 0) {
+        if ((err = fib_lookup(net, &fl, &res)) != 0) {
                 if (!IN_DEV_FORWARD(in_dev))
                         goto e_hostunreach;
                 goto no_route;
@@ -1926,7 +1927,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
         if (res.type == RTN_LOCAL) {
                 int result;
                 result = fib_validate_source(saddr, daddr, tos,
-                                             init_net.loopback_dev->ifindex,
+                                             net->loopback_dev->ifindex,
                                              dev, &spec_dst, &itag);
                 if (result < 0)
                         goto martian_source;
@@ -1988,7 +1989,7 @@ local_input:
 #endif
         rth->rt_iif     =
         rth->fl.iif     = dev->ifindex;
-        rth->u.dst.dev  = init_net.loopback_dev;
+        rth->u.dst.dev  = net->loopback_dev;
         dev_hold(rth->u.dst.dev);
         rth->idev       = in_dev_get(rth->u.dst.dev);
         rth->rt_gateway = daddr;