From: Chris Mi <cmi@nvidia.com>
Date: Thu, 17 Nov 2022 09:48:13 +0200
Subject: net/mlx5: E-switch, Destroy legacy fdb table when needed
Patch-mainline: v6.1-rc8
Git-commit: 2318b8bb94a3a21363cd0d49cad5934bd1e2d60e
References: jsc#PED-1549
The cited commit removes eswitch mode none. But when disabling
sriov in legacy mode or changing from switchdev to legacy mode
without sriov enabled, the legacy fdb table is not destroyed.
It is not the right behavior. Destroy legacy fdb table in above
two caes.
Fixes: f019679ea5f2 ("net/mlx5: E-switch, Remove dependency between sriov and eswitch mode")
Signed-off-by: Chris Mi <cmi@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Eli Cohen <elic@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 3 +++
drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c | 7 +++++++
2 files changed, 10 insertions(+)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -1362,6 +1362,9 @@ void mlx5_eswitch_disable_sriov(struct m
devl_rate_nodes_destroy(devlink);
}
+ /* Destroy legacy fdb when disabling sriov in legacy mode. */
+ if (esw->mode == MLX5_ESWITCH_LEGACY)
+ mlx5_eswitch_disable_locked(esw);
esw->esw_funcs.num_vfs = 0;
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -3387,6 +3387,13 @@ static int esw_offloads_stop(struct mlx5
int err;
esw->mode = MLX5_ESWITCH_LEGACY;
+
+ /* If changing from switchdev to legacy mode without sriov enabled,
+ * no need to create legacy fdb.
+ */
+ if (!mlx5_sriov_is_enabled(esw->dev))
+ return 0;
+
err = mlx5_eswitch_enable_locked(esw, MLX5_ESWITCH_IGNORE_NUM_VFS);
if (err)
NL_SET_ERR_MSG_MOD(extack, "Failed setting eswitch to legacy");