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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

2009 bytes

Lines

52

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/mlx5/driver.h

Detected Declarations

• struct mlx5e_priv
• struct mlx5e_htb
• struct mlx5e_channels
• struct mlx5e_channel
• struct tc_htb_qopt_offload
• struct mlx5e_mqprio_rl

Annotated Snippet

#ifndef __MLX5E_EN_QOS_H
#define __MLX5E_EN_QOS_H

#include <linux/mlx5/driver.h>

#define BYTES_IN_MBIT 125000

struct mlx5e_priv;
struct mlx5e_htb;
struct mlx5e_channels;
struct mlx5e_channel;
struct tc_htb_qopt_offload;

int mlx5e_qos_bytes_rate_check(struct mlx5_core_dev *mdev, u64 nbytes);
int mlx5e_qos_max_leaf_nodes(struct mlx5_core_dev *mdev);

/* SQ lifecycle */
int mlx5e_open_qos_sq(struct mlx5e_priv *priv, struct mlx5e_channels *chs,
		      u16 node_qid, u32 hw_id);
int mlx5e_activate_qos_sq(void *data, u16 node_qid, u32 hw_id);
void mlx5e_deactivate_qos_sq(struct mlx5e_priv *priv, u16 qid);
void mlx5e_close_qos_sq(struct mlx5e_priv *priv, u16 qid);
void mlx5e_reactivate_qos_sq(struct mlx5e_priv *priv, u16 qid, struct netdev_queue *txq);
void mlx5e_reset_qdisc(struct net_device *dev, u16 qid);

int mlx5e_qos_open_queues(struct mlx5e_priv *priv, struct mlx5e_channels *chs);
void mlx5e_qos_activate_queues(struct mlx5e_priv *priv);
void mlx5e_qos_deactivate_queues(struct mlx5e_channel *c);
void mlx5e_qos_deactivate_all_queues(struct mlx5e_channels *chs);
void mlx5e_qos_close_queues(struct mlx5e_channel *c);
void mlx5e_qos_close_all_queues(struct mlx5e_channels *chs);
int mlx5e_qos_alloc_queues(struct mlx5e_priv *priv, struct mlx5e_channels *chs);

/* TX datapath API */
u16 mlx5e_qid_from_qos(struct mlx5e_channels *chs, u16 qid);

/* HTB API */
int mlx5e_htb_setup_tc(struct mlx5e_priv *priv, struct tc_htb_qopt_offload *htb);

/* MQPRIO TX rate limit */
struct mlx5e_mqprio_rl;
struct mlx5e_mqprio_rl *mlx5e_mqprio_rl_alloc(void);
void mlx5e_mqprio_rl_free(struct mlx5e_mqprio_rl *rl);
int mlx5e_mqprio_rl_init(struct mlx5e_mqprio_rl *rl, struct mlx5_core_dev *mdev, u8 num_tc,
			 u64 max_rate[]);
void mlx5e_mqprio_rl_cleanup(struct mlx5e_mqprio_rl *rl);
int mlx5e_mqprio_rl_get_node_hw_id(struct mlx5e_mqprio_rl *rl, int tc, u32 *hw_id);
#endif

Annotation

• Immediate include surface: `linux/mlx5/driver.h`.
• Detected declarations: `struct mlx5e_priv`, `struct mlx5e_htb`, `struct mlx5e_channels`, `struct mlx5e_channel`, `struct tc_htb_qopt_offload`, `struct mlx5e_mqprio_rl`.
• 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.