netdev - [net-next 09/14] net/mlx5: Bridge, support replacing existing FDB entry

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Message-Id: <20211025205431.365080-10-saeed@kernel.org>
Date:   Mon, 25 Oct 2021 13:54:26 -0700
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, Vlad Buslov <vladbu@...dia.com>,
        Paul Blakey <paulb@...dia.com>, Roi Dayan <roid@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: [net-next 09/14] net/mlx5: Bridge, support replacing existing FDB entry

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

The SWITCHDEV_FDB_ADD_TO_DEVICE is used for both adding new and replacing
existing entry. Implement support for replacing existing FDB entries in
mlx5 offload code.

Signed-off-by: Vlad Buslov <vladbu@...dia.com>
Reviewed-by: Paul Blakey <paulb@...dia.com>
Reviewed-by: Roi Dayan <roid@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c
index 33d1d2ed4cd6..f690f430f40f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c
@@ -1160,6 +1160,10 @@ mlx5_esw_bridge_fdb_entry_init(struct net_device *dev, u16 vport_num, u16 esw_ow
 			return ERR_CAST(vlan);
 	}
 
+	entry = mlx5_esw_bridge_fdb_lookup(bridge, addr, vid);
+	if (entry)
+		mlx5_esw_bridge_fdb_entry_notify_and_cleanup(entry, bridge);
+
 	entry = kvzalloc(sizeof(*entry), GFP_KERNEL);
 	if (!entry)
 		return ERR_PTR(-ENOMEM);
-- 
2.31.1