net/mlx5e: Introduce create/destroy RSS indir table access functions

Introduce access functions to create/destroy RSS indrection table
and use it in the Ethernet driver.

Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Author: Achiad Shochat

drivers/net/ethernet/mellanox/mlx5/core/en_main.c

@@ -1188,7 +1188,6 @@ static int mlx5e_open_rqt(struct mlx5e_priv *priv)
 {
 	struct mlx5_core_dev *mdev = priv->mdev;
 	u32 *in;
-	u32 out[MLX5_ST_SZ_DW(create_rqt_out)];
 	void *rqtc;
 	int inlen;
 	int err;
@@ -1216,12 +1215,7 @@ static int mlx5e_open_rqt(struct mlx5e_priv *priv)
 		MLX5_SET(rqtc, rqtc, rq_num[i], priv->channel[ix]->rq.rqn);
 	}
 
-	MLX5_SET(create_rqt_in, in, opcode, MLX5_CMD_OP_CREATE_RQT);
-
-	memset(out, 0, sizeof(out));
-	err = mlx5_cmd_exec_check_status(mdev, in, inlen, out, sizeof(out));
-	if (!err)
-		priv->rqtn = MLX5_GET(create_rqt_out, out, rqtn);
+	err = mlx5_core_create_rqt(mdev, in, inlen, &priv->rqtn);
 
 	kvfree(in);
 
@@ -1230,16 +1224,7 @@ static int mlx5e_open_rqt(struct mlx5e_priv *priv)
 
 static void mlx5e_close_rqt(struct mlx5e_priv *priv)
 {
-	u32 in[MLX5_ST_SZ_DW(destroy_rqt_in)];
-	u32 out[MLX5_ST_SZ_DW(destroy_rqt_out)];
-
-	memset(in, 0, sizeof(in));
-
-	MLX5_SET(destroy_rqt_in, in, opcode, MLX5_CMD_OP_DESTROY_RQT);
-	MLX5_SET(destroy_rqt_in, in, rqtn, priv->rqtn);
-
-	mlx5_cmd_exec_check_status(priv->mdev, in, sizeof(in), out,
-				   sizeof(out));
+	mlx5_core_destroy_rqt(priv->mdev, priv->rqtn);
 }
 
 static void mlx5e_build_tir_ctx(struct mlx5e_priv *priv, u32 *tirc, int tt)

drivers/net/ethernet/mellanox/mlx5/core/transobj.c

@@ -358,3 +358,32 @@ int mlx5_core_arm_xsrq(struct mlx5_core_dev *dev, u32 xsrqn, u16 lwm)
 	return  mlx5_cmd_exec_check_status(dev, in, sizeof(in), out,
 					   sizeof(out));
 }
+
+int mlx5_core_create_rqt(struct mlx5_core_dev *dev, u32 *in, int inlen,
+			 u32 *rqtn)
+{
+	u32 out[MLX5_ST_SZ_DW(create_rqt_out)];
+	int err;
+
+	MLX5_SET(create_rqt_in, in, opcode, MLX5_CMD_OP_CREATE_RQT);
+
+	memset(out, 0, sizeof(out));
+	err = mlx5_cmd_exec_check_status(dev, in, inlen, out, sizeof(out));
+	if (!err)
+		*rqtn = MLX5_GET(create_rqt_out, out, rqtn);
+
+	return err;
+}
+
+void mlx5_core_destroy_rqt(struct mlx5_core_dev *dev, u32 rqtn)
+{
+	u32 in[MLX5_ST_SZ_DW(destroy_rqt_in)];
+	u32 out[MLX5_ST_SZ_DW(destroy_rqt_out)];
+
+	memset(in, 0, sizeof(in));
+
+	MLX5_SET(destroy_rqt_in, in, opcode, MLX5_CMD_OP_DESTROY_RQT);
+	MLX5_SET(destroy_rqt_in, in, rqtn, rqtn);
+
+	mlx5_cmd_exec_check_status(dev, in, sizeof(in), out, sizeof(out));
+}

drivers/net/ethernet/mellanox/mlx5/core/transobj.h

@@ -61,4 +61,8 @@ int mlx5_core_destroy_xsrq(struct mlx5_core_dev *dev, u32 rmpn);
 int mlx5_core_query_xsrq(struct mlx5_core_dev *dev, u32 rmpn, u32 *out);
 int mlx5_core_arm_xsrq(struct mlx5_core_dev *dev, u32 rmpn, u16 lwm);
 
+int mlx5_core_create_rqt(struct mlx5_core_dev *dev, u32 *in, int inlen,
+			 u32 *rqtn);
+void mlx5_core_destroy_rqt(struct mlx5_core_dev *dev, u32 rqtn);
+
 #endif /* __TRANSOBJ_H__ */