drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h

File Facts

System

Linux kernel

Corpus path

drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h

Extension

.h

Size

1417 bytes

Lines

48

Domain

Driver Families

Bucket

drivers/net

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.

• 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/kernel.h

Detected Declarations

• struct mlx5_core_dev
• struct mlx5e_rss_params_indir
• struct mlx5e_rqt
• function mlx5e_rqt_get_rqtn

Annotated Snippet

struct mlx5e_rss_params_indir {
	u32 *table;
	u32 actual_table_size;
	u32 max_table_size;
};

void mlx5e_rss_params_indir_init_uniform(struct mlx5e_rss_params_indir *indir,
					 unsigned int num_channels);

struct mlx5e_rqt {
	struct mlx5_core_dev *mdev; /* primary */
	u32 rqtn;
	u16 size;
};

int mlx5e_rqt_init_direct(struct mlx5e_rqt *rqt, struct mlx5_core_dev *mdev,
			  bool indir_enabled, u32 init_rqn, u32 indir_table_size);
int mlx5e_rqt_init_indir(struct mlx5e_rqt *rqt, struct mlx5_core_dev *mdev,
			 u32 *rqns, u32 *vhca_ids, unsigned int num_rqns,
			 u8 hfunc, struct mlx5e_rss_params_indir *indir);
void mlx5e_rqt_destroy(struct mlx5e_rqt *rqt);

static inline u32 mlx5e_rqt_get_rqtn(struct mlx5e_rqt *rqt)
{
	return rqt->rqtn;
}

u32 mlx5e_rqt_size(struct mlx5_core_dev *mdev, unsigned int num_channels);
int mlx5e_rqt_redirect_direct(struct mlx5e_rqt *rqt, u32 rqn, u32 *vhca_id);
int mlx5e_rqt_redirect_indir(struct mlx5e_rqt *rqt, u32 *rqns, u32 *vhca_ids,
			     unsigned int num_rqns,
			     u8 hfunc, struct mlx5e_rss_params_indir *indir);

#endif /* __MLX5_EN_RQT_H__ */

Annotation

• Immediate include surface: `linux/kernel.h`.
• Detected declarations: `struct mlx5_core_dev`, `struct mlx5e_rss_params_indir`, `struct mlx5e_rqt`, `function mlx5e_rqt_get_rqtn`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: source 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.