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

File Facts

System

Linux kernel

Corpus path

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

Extension

.c

Size

2189 bytes

Lines

60

Domain

Driver Families

Bucket

drivers/net

Inferred role

Driver Families: exported/initcall integration point

Status

integration 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.

• 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/kernel.h
• linux/mlx5/driver.h
• mlx5_core.h

Detected Declarations

• function Copyright
• function mlx5_core_dealloc_pd
• export mlx5_core_alloc_pd
• export mlx5_core_dealloc_pd

Annotated Snippet

#include <linux/kernel.h>
#include <linux/mlx5/driver.h>
#include "mlx5_core.h"

int mlx5_core_alloc_pd(struct mlx5_core_dev *dev, u32 *pdn)
{
	u32 out[MLX5_ST_SZ_DW(alloc_pd_out)] = {};
	u32 in[MLX5_ST_SZ_DW(alloc_pd_in)] = {};
	int err;

	MLX5_SET(alloc_pd_in, in, opcode, MLX5_CMD_OP_ALLOC_PD);
	err = mlx5_cmd_exec_inout(dev, alloc_pd, in, out);
	if (!err)
		*pdn = MLX5_GET(alloc_pd_out, out, pd);
	return err;
}
EXPORT_SYMBOL(mlx5_core_alloc_pd);

int mlx5_core_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn)
{
	u32 in[MLX5_ST_SZ_DW(dealloc_pd_in)] = {};

	MLX5_SET(dealloc_pd_in, in, opcode, MLX5_CMD_OP_DEALLOC_PD);
	MLX5_SET(dealloc_pd_in, in, pd, pdn);
	return mlx5_cmd_exec_in(dev, dealloc_pd, in);
}
EXPORT_SYMBOL(mlx5_core_dealloc_pd);

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/mlx5/driver.h`, `mlx5_core.h`.
• Detected declarations: `function Copyright`, `function mlx5_core_dealloc_pd`, `export mlx5_core_alloc_pd`, `export mlx5_core_dealloc_pd`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: integration implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.