drivers/net/ethernet/intel/i40e/i40e_xsk.h

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/intel/i40e/i40e_xsk.h

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/intel/i40e/i40e_xsk.h
Extension
.h
Size
1219 bytes
Lines
35
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.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _I40E_XSK_H_
#define _I40E_XSK_H_

#include <linux/types.h>

/* This value should match the pragma in the unrolled_count()
 * macro. Why 4? It is strictly empirical. It seems to be a good
 * compromise between the advantage of having simultaneous outstanding
 * reads to the DMA array that can hide each others latency and the
 * disadvantage of having a larger code path.
 */
#define PKTS_PER_BATCH 4

struct i40e_ring;
struct i40e_vsi;
struct net_device;
struct xsk_buff_pool;

int i40e_queue_pair_disable(struct i40e_vsi *vsi, int queue_pair);
int i40e_queue_pair_enable(struct i40e_vsi *vsi, int queue_pair);
int i40e_xsk_pool_setup(struct i40e_vsi *vsi, struct xsk_buff_pool *pool,
			u16 qid);
bool i40e_alloc_rx_buffers_zc(struct i40e_ring *rx_ring, u16 cleaned_count);
int i40e_clean_rx_irq_zc(struct i40e_ring *rx_ring, int budget);

bool i40e_clean_xdp_tx_irq(struct i40e_vsi *vsi, struct i40e_ring *tx_ring);
int i40e_xsk_wakeup(struct net_device *dev, u32 queue_id, u32 flags);
int i40e_realloc_rx_bi_zc(struct i40e_vsi *vsi, bool zc);
void i40e_clear_rx_bi_zc(struct i40e_ring *rx_ring);

#endif /* _I40E_XSK_H_ */

Annotation

Implementation Notes