[NETNS]: Add a namespace mark to fib_info.

This is required to make fib_info lookups namespace aware. In the
other case initial namespace devices are marked as dead in the local
routing table during other namespace stop.

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

2 files changed, 5 insertions, 4 deletions

diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index 1b2f008db978..cb0df37950b7 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -69,6 +69,7 @@ struct fib_nh {
 struct fib_info {
         struct hlist_node       fib_hash;
         struct hlist_node       fib_lhash;
+        struct net              *fib_net;
         int                     fib_treeref;
         atomic_t                fib_clntref;
         int                     fib_dead;
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 5beff2e02751..97cc49412684 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -687,6 +687,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
         struct fib_info *fi = NULL;
         struct fib_info *ofi;
         int nhs = 1;
+        struct net *net = cfg->fc_nlinfo.nl_net;
 
         /* Fast check to catch the most weird cases */
         if (fib_props[cfg->fc_type].scope > cfg->fc_scope)
@@ -727,6 +728,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
                 goto failure;
         fib_info_cnt++;
 
+        fi->fib_net = net;
         fi->fib_protocol = cfg->fc_protocol;
         fi->fib_flags = cfg->fc_flags;
         fi->fib_priority = cfg->fc_priority;
@@ -798,8 +800,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
                 if (nhs != 1 || nh->nh_gw)
                         goto err_inval;
                 nh->nh_scope = RT_SCOPE_NOWHERE;
-                nh->nh_dev = dev_get_by_index(cfg->fc_nlinfo.nl_net,
-                                              fi->fib_nh->nh_oif);
+                nh->nh_dev = dev_get_by_index(net, fi->fib_nh->nh_oif);
                 err = -ENODEV;
                 if (nh->nh_dev == NULL)
                         goto failure;
@@ -813,8 +814,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
         if (fi->fib_prefsrc) {
                 if (cfg->fc_type != RTN_LOCAL || !cfg->fc_dst ||
                     fi->fib_prefsrc != cfg->fc_dst)
-                        if (inet_addr_type(cfg->fc_nlinfo.nl_net,
-                                           fi->fib_prefsrc) != RTN_LOCAL)
+                        if (inet_addr_type(net, fi->fib_prefsrc) != RTN_LOCAL)
                                 goto err_inval;
         }