netdev - [PATCH net-next 1/2] net: bridge: mcast: br_multicast_set_port_router takes multicast context as argument

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Message-Id: <20210820124255.1465672-2-razor@blackwall.org>
Date:   Fri, 20 Aug 2021 15:42:54 +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 1/2] net: bridge: mcast: br_multicast_set_port_router takes multicast context as argument

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

Change br_multicast_set_port_router to take port multicast context as
its first argument so we can later use it to control port/vlan mcast
router option.

Signed-off-by: Nikolay Aleksandrov <nikolay@...dia.com>
---
 net/bridge/br_multicast.c | 11 ++++++-----
 net/bridge/br_netlink.c   |  3 ++-
 net/bridge/br_private.h   |  3 ++-
 net/bridge/br_sysfs_if.c  |  2 +-
 4 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 16e686f5b9e9..be9d1376e249 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -4246,15 +4246,16 @@ br_multicast_rport_del_notify(struct net_bridge_mcast_port *pmctx, bool deleted)
 		pmctx->multicast_router = MDB_RTR_TYPE_TEMP_QUERY;
 }
 
-int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val)
+int br_multicast_set_port_router(struct net_bridge_mcast_port *pmctx,
+				 unsigned long val)
 {
-	struct net_bridge_mcast *brmctx = &p->br->multicast_ctx;
-	struct net_bridge_mcast_port *pmctx = &p->multicast_ctx;
+	struct net_bridge_mcast *brmctx;
 	unsigned long now = jiffies;
 	int err = -EINVAL;
 	bool del = false;
 
-	spin_lock(&p->br->multicast_lock);
+	brmctx = br_multicast_port_ctx_get_global(pmctx);
+	spin_lock(&brmctx->br->multicast_lock);
 	if (pmctx->multicast_router == val) {
 		/* Refresh the temp router port timer */
 		if (pmctx->multicast_router == MDB_RTR_TYPE_TEMP) {
@@ -4304,7 +4305,7 @@ int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val)
 	}
 	err = 0;
 unlock:
-	spin_unlock(&p->br->multicast_lock);
+	spin_unlock(&brmctx->br->multicast_lock);
 
 	return err;
 }
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 2f184ad8ae29..6c58fc14d2cb 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -932,7 +932,8 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[],
 	if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
 		u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
 
-		err = br_multicast_set_port_router(p, mcast_router);
+		err = br_multicast_set_port_router(&p->multicast_ctx,
+						   mcast_router);
 		if (err)
 			return err;
 	}
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 21b292eb2b3e..fcc0fcf44a95 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -879,7 +879,8 @@ void br_multicast_flood(struct net_bridge_mdb_entry *mdst, struct sk_buff *skb,
 			struct net_bridge_mcast *brmctx,
 			bool local_rcv, bool local_orig);
 int br_multicast_set_router(struct net_bridge_mcast *brmctx, unsigned long val);
-int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
+int br_multicast_set_port_router(struct net_bridge_mcast_port *pmctx,
+				 unsigned long val);
 int br_multicast_toggle(struct net_bridge *br, unsigned long val,
 			struct netlink_ext_ack *extack);
 int br_multicast_set_querier(struct net_bridge_mcast *brmctx, unsigned long val);
diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c
index e9e3aedd3178..07fa76080512 100644
--- a/net/bridge/br_sysfs_if.c
+++ b/net/bridge/br_sysfs_if.c
@@ -250,7 +250,7 @@ static ssize_t show_multicast_router(struct net_bridge_port *p, char *buf)
 static int store_multicast_router(struct net_bridge_port *p,
 				      unsigned long v)
 {
-	return br_multicast_set_port_router(p, v);
+	return br_multicast_set_port_router(&p->multicast_ctx, v);
 }
 static BRPORT_ATTR(multicast_router, 0644, show_multicast_router,
 		   store_multicast_router);
-- 
2.31.1