netdev - [net 06/12] net/mlx5: DR, Don't use SW steering when RoCE is not supported

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Date:   Wed,  9 Jun 2021 17:21:49 -0700
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, Tariq Toukan <tariqt@...dia.com>,
        Leon Romanovsky <leonro@...dia.com>,
        Maor Gottlieb <maorg@...dia.com>,
        Alex Vesker <valex@...dia.com>,
        Yevgeny Kliteynik <kliteyn@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: [net 06/12] net/mlx5: DR, Don't use SW steering when RoCE is not supported

From: Maor Gottlieb <maorg@...dia.com>

SW steering uses RC QP to write/read to/from ICM, hence it's not
supported when RoCE is not supported as well.

Fixes: 70605ea545e8 ("net/mlx5: DR, Expose APIs for direct rule managing")
Signed-off-by: Maor Gottlieb <maorg@...dia.com>
Reviewed-by: Alex Vesker <valex@...dia.com>
Reviewed-by: Yevgeny Kliteynik <kliteyn@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 .../net/ethernet/mellanox/mlx5/core/steering/mlx5dr.h    | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/mlx5dr.h b/drivers/net/ethernet/mellanox/mlx5/core/steering/mlx5dr.h
index 612b0ac31db2..9737565cd8d4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/mlx5dr.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/mlx5dr.h
@@ -124,10 +124,11 @@ int mlx5dr_action_destroy(struct mlx5dr_action *action);
 static inline bool
 mlx5dr_is_supported(struct mlx5_core_dev *dev)
 {
-	return MLX5_CAP_ESW_FLOWTABLE_FDB(dev, sw_owner) ||
-	       (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, sw_owner_v2) &&
-		(MLX5_CAP_GEN(dev, steering_format_version) <=
-		 MLX5_STEERING_FORMAT_CONNECTX_6DX));
+	return MLX5_CAP_GEN(dev, roce) &&
+	       (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, sw_owner) ||
+		(MLX5_CAP_ESW_FLOWTABLE_FDB(dev, sw_owner_v2) &&
+		 (MLX5_CAP_GEN(dev, steering_format_version) <=
+		  MLX5_STEERING_FORMAT_CONNECTX_6DX)));
 }
 
 /* buddy functions & structure */
-- 
2.31.1