netdev - [net-next 2/8] net/mlx5e: Add rollback on add VLAN failure

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Message-Id: <20171109051553.27526-3-saeedm@mellanox.com>
Date:   Thu,  9 Nov 2017 14:15:47 +0900
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Gal Pressman <galp@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next 2/8] net/mlx5e: Add rollback on add VLAN failure

From: Gal Pressman <galp@...lanox.com>

When add VLAN rule fails the active vlan bit should be cleared.

Fixes: afb736e9330a ("net/mlx5: Ethernet resource handling files")
Signed-off-by: Gal Pressman <galp@...lanox.com>
Reviewed-by: Maor Gottlieb <maorg@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_fs.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
index 53901537778b..d3d775a93183 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
@@ -309,10 +309,15 @@ int mlx5e_vlan_rx_add_vid(struct net_device *dev, __always_unused __be16 proto,
 			  u16 vid)
 {
 	struct mlx5e_priv *priv = netdev_priv(dev);
+	int err;
 
 	set_bit(vid, priv->fs.vlan.active_cvlans);
 
-	return mlx5e_add_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_MATCH_CTAG_VID, vid);
+	err = mlx5e_add_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_MATCH_CTAG_VID, vid);
+	if (err)
+		clear_bit(vid, priv->fs.vlan.active_cvlans);
+
+	return err;
 }
 
 int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto,
-- 
2.13.6