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 unsigned int *efv_pkts_compl); 24 25 static inline bool efx_tx_buffer_in_use(struct efx_tx_buffer *buffer) 26 { 27 return buffer->len || (buffer->flags & EFX_TX_BUF_OPTION); 28 } 29 30 void efx_xmit_done_check_empty(struct efx_tx_queue *tx_queue); 31 int efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index); 32 33 void efx_enqueue_unwind(struct efx_tx_queue *tx_queue, 34 unsigned int insert_count); 35 36 struct efx_tx_buffer *efx_tx_map_chunk(struct efx_tx_queue *tx_queue, 37 dma_addr_t dma_addr, size_t len); 38 int efx_tx_tso_header_length(struct sk_buff *skb); 39 int efx_tx_map_data(struct efx_tx_queue *tx_queue, struct sk_buff *skb, 40 unsigned int segment_count); 41 42 unsigned int efx_tx_max_skb_descs(struct efx_nic *efx); 43 int efx_tx_tso_fallback(struct efx_tx_queue *tx_queue, struct sk_buff *skb); 44 45 extern bool efx_separate_tx_channels; 46 #endif 47