drivers/infiniband/hw/mlx5/fs.h

Source file repositories/reference/linux-study-clean/drivers/infiniband/hw/mlx5/fs.h

File Facts

System
Linux kernel
Corpus path
drivers/infiniband/hw/mlx5/fs.h
Extension
.h
Size
1272 bytes
Lines
37
Domain
Driver Families
Bucket
drivers/infiniband
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _MLX5_IB_FS_H
#define _MLX5_IB_FS_H

#include "mlx5_ib.h"

int mlx5_ib_fs_init(struct mlx5_ib_dev *dev);
void mlx5_ib_fs_cleanup_anchor(struct mlx5_ib_dev *dev);

static inline void mlx5_ib_fs_cleanup(struct mlx5_ib_dev *dev)
{
	int i;

	/* When a steering anchor is created, a special flow table is also
	 * created for the user to reference. Since the user can reference it,
	 * the kernel cannot trust that when the user destroys the steering
	 * anchor, they no longer reference the flow table.
	 *
	 * To address this issue, when a user destroys a steering anchor, only
	 * the flow steering rule in the table is destroyed, but the table
	 * itself is kept to deal with the above scenario. The remaining
	 * resources are only removed when the RDMA device is destroyed, which
	 * is a safe assumption that all references are gone.
	 */
	mlx5_ib_fs_cleanup_anchor(dev);
	for (i = 0; i < MLX5_RDMA_TRANSPORT_BYPASS_PRIO; i++)
		kfree(dev->flow_db->rdma_transport_tx[i]);
	for (i = 0; i < MLX5_RDMA_TRANSPORT_BYPASS_PRIO; i++)
		kfree(dev->flow_db->rdma_transport_rx[i]);
	kfree(dev->flow_db);
}
#endif /* _MLX5_IB_FS_H */

Annotation

Implementation Notes