netdev - [net 03/10] net/mlx5: Bridge, fix ageing of peer FDB entries

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Date:   Tue,  7 Feb 2023 19:02:55 -0800
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
        Tariq Toukan <tariqt@...dia.com>,
        Vlad Buslov <vladbu@...dia.com>,
        Maor Dickman <maord@...dia.com>
Subject: [net 03/10] net/mlx5: Bridge, fix ageing of peer FDB entries

From: Vlad Buslov <vladbu@...dia.com>

SWITCHDEV_FDB_ADD_TO_BRIDGE event handler that updates FDB entry 'lastuse'
field is only executed for eswitch that owns the entry. However, if peer
entry processed packets at least once it will have hardware counter 'used'
value greater than entry 'lastuse' from that point on, which will cause FDB
entry not being aged out.

Process the event on all eswitch instances.

Fixes: ff9b7521468b ("net/mlx5: Bridge, support LAG")
Signed-off-by: Vlad Buslov <vladbu@...dia.com>
Reviewed-by: Maor Dickman <maord@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c | 4 ----
 drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c    | 2 +-
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c
index 8099a21e674c..ce85b48d327d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c
@@ -438,10 +438,6 @@ static int mlx5_esw_bridge_switchdev_event(struct notifier_block *nb,
 
 	switch (event) {
 	case SWITCHDEV_FDB_ADD_TO_BRIDGE:
-		/* only handle the event on native eswtich of representor */
-		if (!mlx5_esw_bridge_is_local(dev, rep, esw))
-			break;
-
 		fdb_info = container_of(info,
 					struct switchdev_notifier_fdb_info,
 					info);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c
index b176648d1343..3cdcb0e0b20f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c
@@ -1715,7 +1715,7 @@ void mlx5_esw_bridge_fdb_update_used(struct net_device *dev, u16 vport_num, u16
 	struct mlx5_esw_bridge *bridge;
 
 	port = mlx5_esw_bridge_port_lookup(vport_num, esw_owner_vhca_id, br_offloads);
-	if (!port || port->flags & MLX5_ESW_BRIDGE_PORT_FLAG_PEER)
+	if (!port)
 		return;
 
 	bridge = port->bridge;
-- 
2.39.1