netdev - [net 2/4] net/mlx5e: Set port trust mode to PCP as default

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Message-Id: <20180731202959.32729-3-saeedm@mellanox.com>
Date:   Tue, 31 Jul 2018 13:29:57 -0700
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Or Gerlitz <ogerlitz@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: [net 2/4] net/mlx5e: Set port trust mode to PCP as default

From: Or Gerlitz <ogerlitz@...lanox.com>

The hairpin offload code has dependency on the trust mode being PCP.

Hence we should set PCP as the default for handling cases where we are
disallowed to read the trust mode from the FW, or failed to initialize it.

Fixes: 106be53b6b0a ('net/mlx5e: Set per priority hairpin pairs')
Signed-off-by: Or Gerlitz <ogerlitz@...lanox.com>
Reviewed-by: Parav Pandit <parav@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
index 86bc9ac99586..e33afa8d2417 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
@@ -1172,6 +1172,8 @@ static int mlx5e_trust_initialize(struct mlx5e_priv *priv)
 	struct mlx5_core_dev *mdev = priv->mdev;
 	int err;
 
+	priv->dcbx_dp.trust_state = MLX5_QPTS_TRUST_PCP;
+
 	if (!MLX5_DSCP_SUPPORTED(mdev))
 		return 0;
 
-- 
2.17.0