netns: ip6mr: declare reg_vif_num per-namespace

Preliminary work to make IPv6 multicast forwarding netns-aware.

Declare variable 'reg_vif_num' per-namespace, moves into struct netns_ipv6.

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/ipv6.h b/include/net/netns/ipv6.h
index 919cb0f20055..afab4e4cbac7 100644
--- a/include/net/netns/ipv6.h
+++ b/include/net/netns/ipv6.h
@@ -63,6 +63,9 @@ struct netns_ipv6 {
         atomic_t                cache_resolve_queue_len;
         int                     mroute_do_assert;
         int                     mroute_do_pim;
+#ifdef CONFIG_IPV6_PIMSM_V2
+        int                     mroute_reg_vif_num;
+#endif
 #endif
 };
 #endif