drivers/net/ethernet/sfc/tx_common.h

File Facts

System

Linux kernel

Corpus path

drivers/net/ethernet/sfc/tx_common.h

Extension

.h

Size

1774 bytes

Lines

49

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

• No C-style include directives detected by the generator.

Detected Declarations

• function efx_tx_buffer_in_use

Annotated Snippet

#ifndef EFX_TX_COMMON_H
#define EFX_TX_COMMON_H

int efx_probe_tx_queue(struct efx_tx_queue *tx_queue);
void efx_init_tx_queue(struct efx_tx_queue *tx_queue);
void efx_fini_tx_queue(struct efx_tx_queue *tx_queue);
void efx_remove_tx_queue(struct efx_tx_queue *tx_queue);

void efx_dequeue_buffer(struct efx_tx_queue *tx_queue,
			struct efx_tx_buffer *buffer,
			unsigned int *pkts_compl,
			unsigned int *bytes_compl,
			unsigned int *efv_pkts_compl,
			unsigned int *xdp_pkts,
			unsigned int *xdp_bytes);

static inline bool efx_tx_buffer_in_use(struct efx_tx_buffer *buffer)
{
	return buffer->len || (buffer->flags & EFX_TX_BUF_OPTION);
}

void efx_xmit_done_check_empty(struct efx_tx_queue *tx_queue);
int efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);

void efx_enqueue_unwind(struct efx_tx_queue *tx_queue,
			unsigned int insert_count);

struct efx_tx_buffer *efx_tx_map_chunk(struct efx_tx_queue *tx_queue,
				       dma_addr_t dma_addr, size_t len);
int efx_tx_tso_header_length(struct sk_buff *skb);
int efx_tx_map_data(struct efx_tx_queue *tx_queue, struct sk_buff *skb,
		    unsigned int segment_count);

unsigned int efx_tx_max_skb_descs(struct efx_nic *efx);
int efx_tx_tso_fallback(struct efx_tx_queue *tx_queue, struct sk_buff *skb);

extern bool efx_separate_tx_channels;
#endif

Annotation

• Detected declarations: `function efx_tx_buffer_in_use`.
• 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.