linux/drivers/net/ethernet/sfc/ef100_tx.c

// SPDX-License-Identifier: GPL-2.0-only
/****************************************************************************
 * Driver for Solarflare network controllers and boards
 * Copyright 2018 Solarflare Communications Inc.
 * Copyright 2019-2020 Xilinx Inc.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation, incorporated herein by reference.
 */

#include <net/ip6_checksum.h>

#include "net_driver.h"
#include "tx_common.h"
#include "nic_common.h"
#include "mcdi_functions.h"
#include "ef100_regs.h"
#include "io.h"
#include "ef100_tx.h"
#include "ef100_nic.h"

int ef100_tx_probe(struct efx_tx_queue *tx_queue)
{ … }

void ef100_tx_init(struct efx_tx_queue *tx_queue)
{ … }

static bool ef100_tx_can_tso(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
{ … }

static efx_oword_t *ef100_tx_desc(struct efx_tx_queue *tx_queue, unsigned int index)
{ … }

static void ef100_notify_tx_desc(struct efx_tx_queue *tx_queue)
{ … }

static void ef100_tx_push_buffers(struct efx_tx_queue *tx_queue)
{ … }

static void ef100_set_tx_csum_partial(const struct sk_buff *skb,
				      struct efx_tx_buffer *buffer, efx_oword_t *txd)
{ … }

static void ef100_set_tx_hw_vlan(const struct sk_buff *skb, efx_oword_t *txd)
{ … }

static void ef100_make_send_desc(struct efx_nic *efx,
				 const struct sk_buff *skb,
				 struct efx_tx_buffer *buffer, efx_oword_t *txd,
				 unsigned int segment_count)
{ … }

static void ef100_make_tso_desc(struct efx_nic *efx,
				const struct sk_buff *skb,
				struct efx_tx_buffer *buffer, efx_oword_t *txd,
				unsigned int segment_count)
{ … }

static void ef100_tx_make_descriptors(struct efx_tx_queue *tx_queue,
				      const struct sk_buff *skb,
				      unsigned int segment_count,
				      struct efx_rep *efv)
{ … }

void ef100_tx_write(struct efx_tx_queue *tx_queue)
{ … }

int ef100_ev_tx(struct efx_channel *channel, const efx_qword_t *p_event)
{ … }

/* Add a socket buffer to a TX queue
 *
 * You must hold netif_tx_lock() to call this function.
 *
 * Returns 0 on success, error code otherwise. In case of an error this
 * function will free the SKB.
 */
netdev_tx_t ef100_enqueue_skb(struct efx_tx_queue *tx_queue,
			      struct sk_buff *skb)
{ … }

int __ef100_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb,
			struct efx_rep *efv)
{ … }