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
14 int efx_probe_tx_queue(struct efx_tx_queue *tx_queue);
15 void efx_init_tx_queue(struct efx_tx_queue *tx_queue);
16 void efx_fini_tx_queue(struct efx_tx_queue *tx_queue);
17 void efx_remove_tx_queue(struct efx_tx_queue *tx_queue);
18
19 void 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
efx_tx_buffer_in_use(struct efx_tx_buffer * buffer)24 static 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
29 void efx_xmit_done_check_empty(struct efx_tx_queue *tx_queue);
30 void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);
31
32 void efx_enqueue_unwind(struct efx_tx_queue *tx_queue,
33 unsigned int insert_count);
34
35 struct efx_tx_buffer *efx_tx_map_chunk(struct efx_tx_queue *tx_queue,
36 dma_addr_t dma_addr, size_t len);
37 int efx_tx_tso_header_length(struct sk_buff *skb);
38 int efx_tx_map_data(struct efx_tx_queue *tx_queue, struct sk_buff *skb,
39 unsigned int segment_count);
40
41 unsigned int efx_tx_max_skb_descs(struct efx_nic *efx);
42 int efx_tx_tso_fallback(struct efx_tx_queue *tx_queue, struct sk_buff *skb);
43
44 extern bool efx_separate_tx_channels;
45 #endif
46