From 7117a570b93b8c1f0e20d4efd2695abe929c1fc4 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Mon, 20 Jun 2016 23:04:06 +0200 Subject: [PATCH] mlxsw: spectrum: Centralize VLAN-aware bridge ref counting We hold a reference count on the number of ports member in the VLAN-aware bridge, as we only support one. Instead of always incrementing / decrementing the reference count after joining / leaving the bridge, simply do this accounting in the join / leave functions. Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 58 +++++++++++++------------- 1 file changed, 30 insertions(+), 28 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index cd85316..b999802 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -2651,7 +2651,28 @@ static bool mlxsw_sp_port_dev_check(const struct net_device *dev) return dev->netdev_ops == &mlxsw_sp_port_netdev_ops; } -static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port) +static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp, + struct net_device *br_dev) +{ + return !mlxsw_sp->master_bridge.dev || + mlxsw_sp->master_bridge.dev == br_dev; +} + +static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp, + struct net_device *br_dev) +{ + mlxsw_sp->master_bridge.dev = br_dev; + mlxsw_sp->master_bridge.ref_count++; +} + +static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp) +{ + if (--mlxsw_sp->master_bridge.ref_count == 0) + mlxsw_sp->master_bridge.dev = NULL; +} + +static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port, + struct net_device *br_dev) { struct net_device *dev = mlxsw_sp_port->dev; int err; @@ -2665,6 +2686,8 @@ static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port) if (err) return err; + mlxsw_sp_master_bridge_inc(mlxsw_sp_port->mlxsw_sp, br_dev); + mlxsw_sp_port->learning = 1; mlxsw_sp_port->learning_sync = 1; mlxsw_sp_port->uc_flood = 1; @@ -2683,6 +2706,8 @@ static void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port, mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1); + mlxsw_sp_master_bridge_dec(mlxsw_sp_port->mlxsw_sp); + mlxsw_sp_port->learning = 0; mlxsw_sp_port->learning_sync = 0; mlxsw_sp_port->uc_flood = 0; @@ -2694,26 +2719,6 @@ static void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port, mlxsw_sp_port_add_vid(dev, 0, 1); } -static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp, - struct net_device *br_dev) -{ - return !mlxsw_sp->master_bridge.dev || - mlxsw_sp->master_bridge.dev == br_dev; -} - -static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp, - struct net_device *br_dev) -{ - mlxsw_sp->master_bridge.dev = br_dev; - mlxsw_sp->master_bridge.ref_count++; -} - -static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp) -{ - if (--mlxsw_sp->master_bridge.ref_count == 0) - mlxsw_sp->master_bridge.dev = NULL; -} - static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id) { char sldr_pl[MLXSW_REG_SLDR_LEN]; @@ -2910,7 +2915,6 @@ static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port, if (mlxsw_sp_port->bridged) { mlxsw_sp_port_active_vlans_del(mlxsw_sp_port); mlxsw_sp_port_bridge_leave(mlxsw_sp_port, false); - mlxsw_sp_master_bridge_dec(mlxsw_sp); } if (lag->ref_count == 1) { @@ -3049,13 +3053,11 @@ static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev, mlxsw_sp_port_vlan_unlink(mlxsw_sp_port, upper_dev); } else if (netif_is_bridge_master(upper_dev)) { - if (info->linking) { - err = mlxsw_sp_port_bridge_join(mlxsw_sp_port); - mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev); - } else { + if (info->linking) + err = mlxsw_sp_port_bridge_join(mlxsw_sp_port, + upper_dev); + else mlxsw_sp_port_bridge_leave(mlxsw_sp_port, true); - mlxsw_sp_master_bridge_dec(mlxsw_sp); - } } else if (netif_is_lag_master(upper_dev)) { if (info->linking) err = mlxsw_sp_port_lag_join(mlxsw_sp_port, -- 2.7.4