xref: /dpdk/app/test-pmd/iofwd.c (revision 655131ccf727d536b1b3f6abbdb054297f0ef869)

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2014 Intel Corporation
 */

#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdint.h>
#include <unistd.h>
#include <inttypes.h>

#include <sys/queue.h>
#include <sys/stat.h>

#include <rte_common.h>
#include <rte_byteorder.h>
#include <rte_log.h>
#include <rte_debug.h>
#include <rte_cycles.h>
#include <rte_memory.h>
#include <rte_launch.h>
#include <rte_eal.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_branch_prediction.h>
#include <rte_memcpy.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_interrupts.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_string_fns.h>
#include <rte_flow.h>

#include "testpmd.h"

/*
 * Forwarding of packets in I/O mode.
 * Forward packets "as-is".
 * This is the fastest possible forwarding operation, as it does not access
 * to packets data.
 */
static bool
pkt_burst_io_forward(struct fwd_stream *fs)
{
	struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
	uint16_t nb_rx;

	/*
	 * Receive a burst of packets and forward them.
	 */
	nb_rx = common_fwd_stream_receive(fs, pkts_burst, nb_pkt_per_burst);
	if (unlikely(nb_rx == 0))
		return false;

	common_fwd_stream_transmit(fs, pkts_burst, nb_rx);

	return true;
}

struct fwd_engine io_fwd_engine = {
	.fwd_mode_name  = "io",
	.stream_init    = common_fwd_stream_init,
	.packet_fwd     = pkt_burst_io_forward,
};