From: Roi Dayan <roid@nvidia.com>
Date: Wed, 29 Mar 2023 12:24:32 +0000 (+0300)
Subject: net/mlx5e: Fix error flow in representor failing to add vport rx rule
X-Git-Tag: v6.6.17~4755^2~43^2~10^2~4
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0a6b069cc60d68d33b4f6e7dd7f1adc3ec749766;p=platform%2Fkernel%2Flinux-rpi.git

net/mlx5e: Fix error flow in representor failing to add vport rx rule

On representor init rx error flow the flow steering pointer is being
released so mlx5e_attach_netdev() doesn't have a valid fs pointer
in its error flow. Make sure the pointer is nullified when released
and add a check in mlx5e_fs_cleanup() to verify fs is not null
as representor cleanup callback would be called anyway.

Fixes: af8bbf730068 ("net/mlx5e: Convert mlx5e_flow_steering member of mlx5e_priv to pointer")
Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
index 05796f8..f1dac02 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
@@ -1490,6 +1490,8 @@ err:
 
 void mlx5e_fs_cleanup(struct mlx5e_flow_steering *fs)
 {
+	if (!fs)
+		return;
 	debugfs_remove_recursive(fs->dfs_root);
 	mlx5e_fs_ethtool_free(fs);
 	mlx5e_fs_tc_free(fs);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 7ca7e9b..579c2d2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -5270,6 +5270,7 @@ static void mlx5e_nic_cleanup(struct mlx5e_priv *priv)
 	mlx5e_health_destroy_reporters(priv);
 	mlx5e_ktls_cleanup(priv);
 	mlx5e_fs_cleanup(priv->fs);
+	priv->fs = NULL;
 }
 
 static int mlx5e_init_nic_rx(struct mlx5e_priv *priv)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 8ff654b..6e18d91 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -828,6 +828,7 @@ static int mlx5e_init_ul_rep(struct mlx5_core_dev *mdev,
 static void mlx5e_cleanup_rep(struct mlx5e_priv *priv)
 {
 	mlx5e_fs_cleanup(priv->fs);
+	priv->fs = NULL;
 }
 
 static int mlx5e_create_rep_ttc_table(struct mlx5e_priv *priv)
@@ -994,6 +995,7 @@ err_close_drop_rq:
 	priv->rx_res = NULL;
 err_free_fs:
 	mlx5e_fs_cleanup(priv->fs);
+	priv->fs = NULL;
 	return err;
 }