netdev - [RFC PATCH net-next 13/19] bridge: mcast: Expose br_multicast_new_group

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Date:   Tue, 18 Oct 2022 15:04:14 +0300
From:   Ido Schimmel <idosch@...dia.com>
To:     netdev@...r.kernel.org, bridge@...ts.linux-foundation.org
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com, roopa@...dia.com, razor@...ckwall.org,
        mlxsw@...dia.com, Ido Schimmel <idosch@...dia.com>
Subject: [RFC PATCH net-next 13/19] bridge: mcast: Expose br_multicast_new_group_src()

Currently, new group source entries are only created in response to
received Membership Reports. Subsequent patches are going to allow user
space to install (*, G) entries with a source list.

As a preparatory step, expose br_multicast_new_group_src() so that it
could later be invoked from the MDB code (i.e., br_mdb.c) that handles
RTM_NEWMDB messages.

Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
 net/bridge/br_multicast.c | 2 +-
 net/bridge/br_private.h   | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 09140bc8c15e..14f72d11f4a2 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -1232,7 +1232,7 @@ br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip)
 	return NULL;
 }
 
-static struct net_bridge_group_src *
+struct net_bridge_group_src *
 br_multicast_new_group_src(struct net_bridge_port_group *pg, struct br_ip *src_ip)
 {
 	struct net_bridge_group_src *grp_src;
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 278a18e88e42..2aa453ea04f9 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -972,6 +972,9 @@ void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp,
 				       struct net_bridge_port_group *sg);
 struct net_bridge_group_src *
 br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip);
+struct net_bridge_group_src *
+br_multicast_new_group_src(struct net_bridge_port_group *pg,
+			   struct br_ip *src_ip);
 void br_multicast_del_group_src(struct net_bridge_group_src *src,
 				bool fastleave);
 void br_multicast_ctx_init(struct net_bridge *br,
-- 
2.37.3