netdev - [PATCH net-next 2/2] net: bridge: multicast: add context support for host-joined groups

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Date:   Wed, 21 Jul 2021 17:01:27 +0300
From:   Nikolay Aleksandrov <razor@...ckwall.org>
To:     netdev@...r.kernel.org
Cc:     roopa@...dia.com, bridge@...ts.linux-foundation.org,
        Nikolay Aleksandrov <nikolay@...dia.com>
Subject: [PATCH net-next 2/2] net: bridge: multicast: add context support for host-joined groups

From: Nikolay Aleksandrov <nikolay@...dia.com>

Adding bridge multicast context support for host-joined groups is easy
because we only need the proper timer value. We pass the already chosen
context and use its timer value.

Signed-off-by: Nikolay Aleksandrov <nikolay@...dia.com>
---
 net/bridge/br_mdb.c       | 2 +-
 net/bridge/br_multicast.c | 8 ++++----
 net/bridge/br_private.h   | 3 ++-
 3 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 7b6c3b91d272..25d690b96cec 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -1105,7 +1105,7 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
 			return -EEXIST;
 		}
 
-		br_multicast_host_join(mp, false);
+		br_multicast_host_join(brmctx, mp, false);
 		br_mdb_notify(br->dev, mp, NULL, RTM_NEWMDB);
 
 		return 0;
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 214d1bf854ad..470f1ec3b579 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -1312,7 +1312,8 @@ struct net_bridge_port_group *br_multicast_new_port_group(
 	return p;
 }
 
-void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify)
+void br_multicast_host_join(const struct net_bridge_mcast *brmctx,
+			    struct net_bridge_mdb_entry *mp, bool notify)
 {
 	if (!mp->host_joined) {
 		mp->host_joined = true;
@@ -1325,8 +1326,7 @@ void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify)
 	if (br_group_is_l2(&mp->addr))
 		return;
 
-	mod_timer(&mp->timer,
-		  jiffies + mp->br->multicast_ctx.multicast_membership_interval);
+	mod_timer(&mp->timer, jiffies + brmctx->multicast_membership_interval);
 }
 
 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify)
@@ -1363,7 +1363,7 @@ __br_multicast_add_group(struct net_bridge_mcast *brmctx,
 		return ERR_CAST(mp);
 
 	if (!pmctx) {
-		br_multicast_host_join(mp, true);
+		br_multicast_host_join(brmctx, mp, true);
 		goto out;
 	}
 
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index af1f5c1c6b88..30fb56637049 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -900,7 +900,8 @@ void br_multicast_get_stats(const struct net_bridge *br,
 			    struct br_mcast_stats *dest);
 void br_mdb_init(void);
 void br_mdb_uninit(void);
-void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify);
+void br_multicast_host_join(const struct net_bridge_mcast *brmctx,
+			    struct net_bridge_mdb_entry *mp, bool notify);
 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify);
 void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg,
 				     u8 filter_mode);
-- 
2.31.1