LXR linux/drivers/net/ethernet/sfc/tx

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/****************************************************************************
   3 * Driver for Solarflare network controllers and boards
   4 * Copyright 2018 Solarflare Communications Inc.
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms of the GNU General Public License version 2 as published
   8 * by the Free Software Foundation, incorporated herein by reference.
   9 */
  10
  11#ifndef EFX_TX_COMMON_H
  12#define EFX_TX_COMMON_H
  13
  14int efx_probe_tx_queue(struct efx_tx_queue *tx_queue);
  15void efx_init_tx_queue(struct efx_tx_queue *tx_queue);
  16void efx_fini_tx_queue(struct efx_tx_queue *tx_queue);
  17void efx_remove_tx_queue(struct efx_tx_queue *tx_queue);
  18
  19void efx_dequeue_buffer(struct efx_tx_queue *tx_queue,
  20                        struct efx_tx_buffer *buffer,
  21                        unsigned int *pkts_compl,
  22                        unsigned int *bytes_compl);
  23
  24static inline bool efx_tx_buffer_in_use(struct efx_tx_buffer *buffer)
  25{
  26        return buffer->len || (buffer->flags & EFX_TX_BUF_OPTION);
  27}
  28
  29void efx_xmit_done_check_empty(struct efx_tx_queue *tx_queue);
  30void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);
  31
  32void efx_enqueue_unwind(struct efx_tx_queue *tx_queue,
  33                        unsigned int insert_count);
  34
  35struct efx_tx_buffer *efx_tx_map_chunk(struct efx_tx_queue *tx_queue,
  36                                       dma_addr_t dma_addr, size_t len);
  37int efx_tx_tso_header_length(struct sk_buff *skb);
  38int efx_tx_map_data(struct efx_tx_queue *tx_queue, struct sk_buff *skb,
  39                    unsigned int segment_count);
  40
  41unsigned int efx_tx_max_skb_descs(struct efx_nic *efx);
  42int efx_tx_tso_fallback(struct efx_tx_queue *tx_queue, struct sk_buff *skb);
  43
  44extern bool efx_separate_tx_channels;
  45#endif
  46