xref: /dpdk/app/test-pmd/5tswap.c (revision 1d343c19330a11f05e3ea369ae5780d38772358e)

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright 2014-2020 Mellanox Technologies, Ltd
 */

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

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

#include <rte_common.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_ip.h>
#include <rte_flow.h>

#include "testpmd.h"
#include "5tswap.h"

/*
 * 5 tuple swap forwarding mode: Swap the source and the destination of layers
 * 2,3,4. Swaps source and destination for MAC, IPv4/IPv6, UDP/TCP.
 * Parses each layer and swaps it. When the next layer doesn't match it stops.
 */
static bool
pkt_burst_5tuple_swap(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;

	do_5tswap(pkts_burst, nb_rx, fs);

	common_fwd_stream_transmit(fs, pkts_burst, nb_rx);

	return true;
}

struct fwd_engine five_tuple_swap_fwd_engine = {
	.fwd_mode_name  = "5tswap",
	.stream_init    = common_fwd_stream_init,
	.packet_fwd     = pkt_burst_5tuple_swap,
};