From: Dmytro Linkin <dmitrolin@mellanox.com>
Date: Wed, 12 Feb 2020 11:32:39 +0200
Subject: net/mlx5e: Don't clear the whole vf config when switching modes
Patch-mainline: v5.6-rc3
Git-commit: 383de108157c881074f32914b61125e299820bd2
References: jsc#SLE-8464

There is no need to reset all vf config (except link state) between
legacy and switchdev modes changes.
Also, set link state to AUTO, when legacy enabled.

Fixes: 3b83b6c2e024 ("net/mlx5e: Clear VF config when switching modes")
Signed-off-by: Dmytro Linkin <dmitrolin@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlx5/core/eswitch.c          |    6 +++++-
 drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c |    4 ++--
 2 files changed, 7 insertions(+), 3 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -459,12 +459,16 @@ static void esw_destroy_legacy_table(str
 
 static int esw_legacy_enable(struct mlx5_eswitch *esw)
 {
-	int ret;
+	struct mlx5_vport *vport;
+	int ret, i;
 
 	ret = esw_create_legacy_table(esw);
 	if (ret)
 		return ret;
 
+	mlx5_esw_for_each_vf_vport(esw, i, vport, esw->esw_funcs.num_vfs)
+		vport->info.link_state = MLX5_VPORT_ADMIN_STATE_AUTO;
+
 	ret = mlx5_eswitch_enable_pf_vf_vports(esw, MLX5_LEGACY_SRIOV_VPORT_EVENTS);
 	if (ret)
 		esw_destroy_legacy_table(esw);
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -1378,7 +1378,7 @@ static int esw_offloads_start(struct mlx
 		return -EINVAL;
 	}
 
-	mlx5_eswitch_disable(esw, true);
+	mlx5_eswitch_disable(esw, false);
 	mlx5_eswitch_update_num_of_vfs(esw, esw->dev->priv.sriov.num_vfs);
 	err = mlx5_eswitch_enable(esw, MLX5_ESWITCH_OFFLOADS);
 	if (err) {
@@ -2272,7 +2272,7 @@ static int esw_offloads_stop(struct mlx5
 {
 	int err, err1;
 
-	mlx5_eswitch_disable(esw, true);
+	mlx5_eswitch_disable(esw, false);
 	err = mlx5_eswitch_enable(esw, MLX5_ESWITCH_LEGACY);
 	if (err) {
 		NL_SET_ERR_MSG_MOD(extack, "Failed setting eswitch to legacy");