netns: ipmr: declare reg_vif_num per-namespace

Preliminary work to make IPv4 multicast routing netns-aware.

Declare variable 'reg_vif_num' per-namespace, move into struct netns_ipv4.

At the moment, this variable 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, 3 insertions, 0 deletions

diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index 8451722782bb..2eb3814d6258 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -63,6 +63,9 @@ struct netns_ipv4 {
         atomic_t                cache_resolve_queue_len;
         int                     mroute_do_assert;
         int                     mroute_do_pim;
+#if defined(CONFIG_IP_PIMSM_V1) || defined(CONFIG_IP_PIMSM_V2)
+        int                     mroute_reg_vif_num;
+#endif
 #endif
 };
 #endif