linux/drivers/net/ethernet/amazon/ena/ena_eth_com.c

// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
 * Copyright 2015-2020 Amazon.com, Inc. or its affiliates. All rights reserved.
 */

#include "ena_eth_com.h"

static struct ena_eth_io_rx_cdesc_base *ena_com_get_next_rx_cdesc(
	struct ena_com_io_cq *io_cq)
{ … }

static void *get_sq_desc_regular_queue(struct ena_com_io_sq *io_sq)
{ … }

static int ena_com_write_bounce_buffer_to_dev(struct ena_com_io_sq *io_sq,
						     u8 *bounce_buffer)
{ … }

static int ena_com_write_header_to_bounce(struct ena_com_io_sq *io_sq,
						 u8 *header_src,
						 u16 header_len)
{ … }

static void *get_sq_desc_llq(struct ena_com_io_sq *io_sq)
{ … }

static int ena_com_close_bounce_buffer(struct ena_com_io_sq *io_sq)
{ … }

static void *get_sq_desc(struct ena_com_io_sq *io_sq)
{ … }

static int ena_com_sq_update_llq_tail(struct ena_com_io_sq *io_sq)
{ … }

static int ena_com_sq_update_tail(struct ena_com_io_sq *io_sq)
{ … }

static struct ena_eth_io_rx_cdesc_base *
	ena_com_rx_cdesc_idx_to_ptr(struct ena_com_io_cq *io_cq, u16 idx)
{ … }

static int ena_com_cdesc_rx_pkt_get(struct ena_com_io_cq *io_cq,
				    u16 *first_cdesc_idx,
				    u16 *num_descs)
{ … }

static int ena_com_create_meta(struct ena_com_io_sq *io_sq,
			       struct ena_com_tx_meta *ena_meta)
{ … }

static int ena_com_create_and_store_tx_meta_desc(struct ena_com_io_sq *io_sq,
						 struct ena_com_tx_ctx *ena_tx_ctx,
						 bool *have_meta)
{ … }

static void ena_com_rx_set_flags(struct ena_com_io_cq *io_cq,
				 struct ena_com_rx_ctx *ena_rx_ctx,
				 struct ena_eth_io_rx_cdesc_base *cdesc)
{ … }

/*****************************************************************************/
/*****************************     API      **********************************/
/*****************************************************************************/

int ena_com_prepare_tx(struct ena_com_io_sq *io_sq,
		       struct ena_com_tx_ctx *ena_tx_ctx,
		       int *nb_hw_desc)
{ … }

int ena_com_rx_pkt(struct ena_com_io_cq *io_cq,
		   struct ena_com_io_sq *io_sq,
		   struct ena_com_rx_ctx *ena_rx_ctx)
{ … }

int ena_com_add_single_rx_desc(struct ena_com_io_sq *io_sq,
			       struct ena_com_buf *ena_buf,
			       u16 req_id)
{ … }

bool ena_com_cq_empty(struct ena_com_io_cq *io_cq)
{ … }