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 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_siena_xmit_done_check_empty(struct efx_tx_queue *tx_queue); 30 void efx_siena_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