netdev - [PATCH net-next V3 06/10] net/mlx5e: Expose memory key creation (mkey) function

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Date:   Wed, 21 Sep 2022 11:10:50 -0700
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
        Tariq Toukan <tariqt@...dia.com>,
        Emeel Hakim <ehakim@...dia.com>, Raed Salem <raeds@...dia.com>
Subject: [PATCH net-next V3 06/10] net/mlx5e: Expose memory key creation (mkey) function

From: Emeel Hakim <ehakim@...dia.com>

Expose mlx5e_create_mkey function, for future patches in the
macsec series to use.
The above function creates a memory key which describes a
region in memory that can be later used by both HW and SW.
The counterpart destroy functionality is already exposed.

Reviewed-by: Raed Salem <raeds@...dia.com>
Signed-off-by: Emeel Hakim <ehakim@...dia.com>
Reviewed-by: Tariq Toukan <tariqt@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en.h        | 1 +
 drivers/net/ethernet/mellanox/mlx5/core/en_common.c | 3 +--
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index 13aac5131ff7..648a178e8db8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -1134,6 +1134,7 @@ static inline bool mlx5_tx_swp_supported(struct mlx5_core_dev *mdev)
 
 extern const struct ethtool_ops mlx5e_ethtool_ops;
 
+int mlx5e_create_mkey(struct mlx5_core_dev *mdev, u32 pdn, u32 *mkey);
 int mlx5e_create_mdev_resources(struct mlx5_core_dev *mdev);
 void mlx5e_destroy_mdev_resources(struct mlx5_core_dev *mdev);
 int mlx5e_refresh_tirs(struct mlx5e_priv *priv, bool enable_uc_lb,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_common.c b/drivers/net/ethernet/mellanox/mlx5/core/en_common.c
index c0f409c195bf..68f19324db93 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_common.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_common.c
@@ -46,8 +46,7 @@ void mlx5e_mkey_set_relaxed_ordering(struct mlx5_core_dev *mdev, void *mkc)
 	MLX5_SET(mkc, mkc, relaxed_ordering_write, ro_pci_enable && ro_write);
 }
 
-static int mlx5e_create_mkey(struct mlx5_core_dev *mdev, u32 pdn,
-			     u32 *mkey)
+int mlx5e_create_mkey(struct mlx5_core_dev *mdev, u32 pdn, u32 *mkey)
 {
 	int inlen = MLX5_ST_SZ_BYTES(create_mkey_in);
 	void *mkc;
-- 
2.37.3