[PATCH net-next 1/3] net/mlx5: wire frag buf pools lifecycle hooks

[Tariq Toukan <tariqt@nvidia.com>]

From: Nimrod Oren <noren@nvidia.com>

Wire mlx5_frag_buf pools init/cleanup hooks into
mlx5_mdev_init()/uninit() and the init unwind path.

Keep temporary no-op stubs in alloc.c so lifecycle ordering is in place
before the coherent DMA sub-page allocator implementation is added in
follow-up patches.

Signed-off-by: Nimrod Oren <noren@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/alloc.c     | 11 +++++++++++
 drivers/net/ethernet/mellanox/mlx5/core/main.c      |  7 +++++++
 drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h |  2 ++
 3 files changed, 20 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/alloc.c b/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
index 202feab1558a..cebb3559d2c9 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
@@ -71,6 +71,17 @@ static void *mlx5_dma_zalloc_coherent_node(struct mlx5_core_dev *dev,
 	return cpu_handle;
 }
 
+/* Implemented later in the series */
+void mlx5_frag_buf_pools_cleanup(struct mlx5_core_dev *dev)
+{
+}
+
+/* Implemented later in the series */
+int mlx5_frag_buf_pools_init(struct mlx5_core_dev *dev)
+{
+	return 0;
+}
+
 int mlx5_frag_buf_alloc_node(struct mlx5_core_dev *dev, int size,
 			     struct mlx5_frag_buf *buf, int node)
 {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 74827e8ca125..b1b9ebfd3866 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -1817,6 +1817,10 @@ int mlx5_mdev_init(struct mlx5_core_dev *dev, int profile_idx)
 	priv->dbg.dbg_root = debugfs_create_dir(dev_name(dev->device),
 						mlx5_debugfs_root);
 
+	err = mlx5_frag_buf_pools_init(dev);
+	if (err)
+		goto err_frag_buf_pools_init;
+
 	INIT_LIST_HEAD(&priv->traps);
 
 	err = mlx5_cmd_init(dev);
@@ -1878,6 +1882,8 @@ int mlx5_mdev_init(struct mlx5_core_dev *dev, int profile_idx)
 err_timeout_init:
 	mlx5_cmd_cleanup(dev);
 err_cmd_init:
+	mlx5_frag_buf_pools_cleanup(dev);
+err_frag_buf_pools_init:
 	debugfs_remove(dev->priv.dbg.dbg_root);
 	mutex_destroy(&priv->pgdir_mutex);
 	mutex_destroy(&priv->alloc_mutex);
@@ -1902,6 +1908,7 @@ void mlx5_mdev_uninit(struct mlx5_core_dev *dev)
 	mlx5_health_cleanup(dev);
 	mlx5_tout_cleanup(dev);
 	mlx5_cmd_cleanup(dev);
+	mlx5_frag_buf_pools_cleanup(dev);
 	debugfs_remove_recursive(dev->priv.dbg.dbg_root);
 	mutex_destroy(&priv->pgdir_mutex);
 	mutex_destroy(&priv->alloc_mutex);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
index 1507e881d962..87f01c4e8d65 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
@@ -436,6 +436,8 @@ mlx5_sf_coredev_to_adev(struct mlx5_core_dev *mdev)
 
 int mlx5_mdev_init(struct mlx5_core_dev *dev, int profile_idx);
 void mlx5_mdev_uninit(struct mlx5_core_dev *dev);
+int mlx5_frag_buf_pools_init(struct mlx5_core_dev *dev);
+void mlx5_frag_buf_pools_cleanup(struct mlx5_core_dev *dev);
 int mlx5_init_one(struct mlx5_core_dev *dev);
 int mlx5_init_one_devl_locked(struct mlx5_core_dev *dev);
 void mlx5_uninit_one(struct mlx5_core_dev *dev);
-- 
2.44.0