netdev - [PATCH net-next v2 5/9] net/mlx4: Use devl_ API for devlink region create / destroy

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Date:   Thu, 28 Jul 2022 18:53:46 +0300
From:   Moshe Shemesh <moshe@...dia.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Saeed Mahameed <saeedm@...dia.com>,
        Leon Romanovsky <leon@...nel.org>,
        "Tariq Toukan" <tariqt@...dia.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>
CC:     Jiri Pirko <jiri@...dia.com>, <netdev@...r.kernel.org>,
        Moshe Shemesh <moshe@...dia.com>
Subject: [PATCH net-next v2 5/9] net/mlx4: Use devl_ API for devlink region create / destroy

Use devl_ API to call devl_region_create() and devl_region_destroy()
instead of devlink_region_create() and devlink_region_destroy().
Add devlink instance lock in mlx4 driver paths to these functions.

This will be used by the downstream patch to invoke mlx4 devlink reload
callbacks with devlink lock held.

Signed-off-by: Moshe Shemesh <moshe@...dia.com>
Reviewed-by: Tariq Toukan <tariqt@...dia.com>
Reviewed-by: Jiri Pirko <jiri@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx4/crdump.c | 20 ++++++++++----------
 drivers/net/ethernet/mellanox/mlx4/main.c   |  7 +++++++
 2 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/crdump.c b/drivers/net/ethernet/mellanox/mlx4/crdump.c
index ac5468b77488..82a07a31cde7 100644
--- a/drivers/net/ethernet/mellanox/mlx4/crdump.c
+++ b/drivers/net/ethernet/mellanox/mlx4/crdump.c
@@ -226,10 +226,10 @@ int mlx4_crdump_init(struct mlx4_dev *dev)
 
 	/* Create cr-space region */
 	crdump->region_crspace =
-		devlink_region_create(devlink,
-				      &region_cr_space_ops,
-				      MAX_NUM_OF_DUMPS_TO_STORE,
-				      pci_resource_len(pdev, 0));
+		devl_region_create(devlink,
+				   &region_cr_space_ops,
+				   MAX_NUM_OF_DUMPS_TO_STORE,
+				   pci_resource_len(pdev, 0));
 	if (IS_ERR(crdump->region_crspace))
 		mlx4_warn(dev, "crdump: create devlink region %s err %ld\n",
 			  region_cr_space_str,
@@ -237,10 +237,10 @@ int mlx4_crdump_init(struct mlx4_dev *dev)
 
 	/* Create fw-health region */
 	crdump->region_fw_health =
-		devlink_region_create(devlink,
-				      &region_fw_health_ops,
-				      MAX_NUM_OF_DUMPS_TO_STORE,
-				      HEALTH_BUFFER_SIZE);
+		devl_region_create(devlink,
+				   &region_fw_health_ops,
+				   MAX_NUM_OF_DUMPS_TO_STORE,
+				   HEALTH_BUFFER_SIZE);
 	if (IS_ERR(crdump->region_fw_health))
 		mlx4_warn(dev, "crdump: create devlink region %s err %ld\n",
 			  region_fw_health_str,
@@ -253,6 +253,6 @@ void mlx4_crdump_end(struct mlx4_dev *dev)
 {
 	struct mlx4_fw_crdump *crdump = &dev->persist->crdump;
 
-	devlink_region_destroy(crdump->region_fw_health);
-	devlink_region_destroy(crdump->region_crspace);
+	devl_region_destroy(crdump->region_fw_health);
+	devl_region_destroy(crdump->region_crspace);
 }
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index b187c210d4d6..f3d13190b959 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -3732,6 +3732,7 @@ static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data,
 	int prb_vf[MLX4_MAX_PORTS + 1] = {0, 0, 0};
 	const int param_map[MLX4_MAX_PORTS + 1][MLX4_MAX_PORTS + 1] = {
 		{2, 0, 0}, {0, 1, 2}, {0, 1, 2} };
+	struct devlink *devlink = priv_to_devlink(priv);
 	unsigned total_vfs = 0;
 	unsigned int i;
 
@@ -3844,7 +3845,9 @@ static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data,
 		}
 	}
 
+	devl_lock(devlink);
 	err = mlx4_crdump_init(&priv->dev);
+	devl_unlock(devlink);
 	if (err)
 		goto err_release_regions;
 
@@ -3862,7 +3865,9 @@ static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data,
 	mlx4_catas_end(&priv->dev);
 
 err_crdump:
+	devl_lock(devlink);
 	mlx4_crdump_end(&priv->dev);
+	devl_unlock(devlink);
 
 err_release_regions:
 	pci_release_regions(pdev);
@@ -4161,7 +4166,9 @@ static void mlx4_remove_one(struct pci_dev *pdev)
 	else
 		mlx4_info(dev, "%s: interface is down\n", __func__);
 	mlx4_catas_end(dev);
+	devl_lock(devlink);
 	mlx4_crdump_end(dev);
+	devl_unlock(devlink);
 	if (dev->flags & MLX4_FLAG_SRIOV && !active_vfs) {
 		mlx4_warn(dev, "Disabling SR-IOV\n");
 		pci_disable_sriov(pdev);
-- 
2.18.2