drivers/net/ethernet/intel/libeth/tx.c

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/intel/libeth/tx.c

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/intel/libeth/tx.c
Extension
.c
Size
1111 bytes
Lines
42
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.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (C) 2025 Intel Corporation */

#define DEFAULT_SYMBOL_NAMESPACE	"LIBETH"

#include <net/libeth/xdp.h>

#include "priv.h"

/* Tx buffer completion */

DEFINE_STATIC_CALL_NULL(bulk, libeth_xdp_return_buff_bulk);
DEFINE_STATIC_CALL_NULL(xsk, libeth_xsk_buff_free_slow);

/**
 * libeth_tx_complete_any - perform Tx completion for one SQE of any type
 * @sqe: Tx buffer to complete
 * @cp: polling params
 *
 * Can be used to complete both regular and XDP SQEs, for example when
 * destroying queues.
 * When libeth_xdp is not loaded, XDPSQEs won't be handled.
 */
void libeth_tx_complete_any(struct libeth_sqe *sqe, struct libeth_cq_pp *cp)
{
	if (sqe->type >= __LIBETH_SQE_XDP_START)
		__libeth_xdp_complete_tx(sqe, cp, static_call(bulk),
					 static_call(xsk));
	else
		libeth_tx_complete(sqe, cp);
}
EXPORT_SYMBOL_GPL(libeth_tx_complete_any);

/* Module */

void libeth_attach_xdp(const struct libeth_xdp_ops *ops)
{
	static_call_update(bulk, ops ? ops->bulk : NULL);
	static_call_update(xsk, ops ? ops->xsk : NULL);
}
EXPORT_SYMBOL_GPL(libeth_attach_xdp);

Annotation

Implementation Notes