netns: ipmr: allocate mroute_socket per-namespace.

Preliminary work to make IPv4 multicast routing netns-aware.

Make IPv4 multicast routing mroute_socket per-namespace,
moves it into struct netns_ipv4.

At the moment, mroute_socket is only referenced in init_net.

Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index 977f482d97a9..4f00722c7478 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -54,5 +54,9 @@ struct netns_ipv4 {
 
         struct timer_list rt_secret_timer;
         atomic_t rt_genid;
+
+#ifdef CONFIG_IP_MROUTE
+        struct sock             *mroute_sk;
+#endif
 };
 #endif