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