/*-
 *   BSD LICENSE
 *
 *   Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *     * Neither the name of Intel Corporation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <errno.h>
#include <getopt.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <time.h>
#include <fcntl.h>
#include <sys/types.h>
#include <errno.h>

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

#include <stdint.h>
#include <unistd.h>
#include <inttypes.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_memzone.h>
#include <rte_launch.h>
#include <rte_eal.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_atomic.h>
#include <rte_branch_prediction.h>
#include <rte_mempool.h>
#include <rte_interrupts.h>
#include <rte_pci.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_string_fns.h>
#ifdef RTE_LIBRTE_CMDLINE
#include <cmdline_parse.h>
#include <cmdline_parse_etheraddr.h>
#endif
#ifdef RTE_LIBRTE_PMD_BOND
#include <rte_eth_bond.h>
#endif

#include "testpmd.h"

static void
usage(char* progname)
{
	printf("usage: %s "
#ifdef RTE_LIBRTE_CMDLINE
	       "[--interactive|-i] "
#endif
	       "[--help|-h] | [--auto-start|-a] | ["
	       "--coremask=COREMASK --portmask=PORTMASK --numa "
	       "--mbuf-size= | --total-num-mbufs= | "
	       "--nb-cores= | --nb-ports= | "
#ifdef RTE_LIBRTE_CMDLINE
	       "--eth-peers-configfile= | "
	       "--eth-peer=X,M:M:M:M:M:M | "
#endif
	       "--pkt-filter-mode= |"
	       "--rss-ip | --rss-udp | "
	       "--rxpt= | --rxht= | --rxwt= | --rxfreet= | "
	       "--txpt= | --txht= | --txwt= | --txfreet= | "
	       "--txrst= | --txqflags= ]\n",
	       progname);
#ifdef RTE_LIBRTE_CMDLINE
	printf("  --interactive: run in interactive mode.\n");
#endif
	printf("  --auto-start: start forwarding on init "
	       "[always when non-interactive].\n");
	printf("  --help: display this message and quit.\n");
	printf("  --nb-cores=N: set the number of forwarding cores "
	       "(1 <= N <= %d).\n", nb_lcores);
	printf("  --nb-ports=N: set the number of forwarding ports "
	       "(1 <= N <= %d).\n", nb_ports);
	printf("  --coremask=COREMASK: hexadecimal bitmask of cores running "
	       "the packet forwarding test. The master lcore is reserved for "
	       "command line parsing only, and cannot be masked on for "
	       "packet forwarding.\n");
	printf("  --portmask=PORTMASK: hexadecimal bitmask of ports used "
	       "by the packet forwarding test.\n");
	printf("  --numa: enable NUMA-aware allocation of RX/TX rings and of "
	       "RX memory buffers (mbufs).\n");
	printf("  --port-numa-config=(port,socket)[,(port,socket)]: "
	       "specify the socket on which the memory pool "
	       "used by the port will be allocated.\n");
	printf("  --ring-numa-config=(port,flag,socket)[,(port,flag,socket)]: "
	       "specify the socket on which the TX/RX rings for "
	       "the port will be allocated "
	       "(flag: 1 for RX; 2 for TX; 3 for RX and TX).\n");
	printf("  --socket-num=N: set socket from which all memory is allocated "
	       "in NUMA mode.\n");
	printf("  --mbuf-size=N: set the data size of mbuf to N bytes.\n");
	printf("  --total-num-mbufs=N: set the number of mbufs to be allocated "
	       "in mbuf pools.\n");
	printf("  --max-pkt-len=N: set the maximum size of packet to N bytes.\n");
#ifdef RTE_LIBRTE_CMDLINE
	printf("  --eth-peers-configfile=name: config file with ethernet addresses "
	       "of peer ports.\n");
	printf("  --eth-peer=X,M:M:M:M:M:M: set the MAC address of the X peer "
	       "port (0 <= X < %d).\n", RTE_MAX_ETHPORTS);
#endif
	printf("  --pkt-filter-mode=N: set Flow Director mode "
	       "(N: none (default mode) or signature or perfect).\n");
	printf("  --pkt-filter-report-hash=N: set Flow Director report mode "
	       "(N: none  or match (default) or always).\n");
	printf("  --pkt-filter-size=N: set Flow Director mode "
	       "(N: 64K (default mode) or 128K or 256K).\n");
	printf("  --pkt-filter-drop-queue=N: set drop-queue. "
	       "In perfect mode, when you add a rule with queue = -1 "
	       "the packet will be enqueued into the rx drop-queue. "
	       "If the drop-queue doesn't exist, the packet is dropped. "
	       "By default drop-queue=127.\n");
	printf("  --crc-strip: enable CRC stripping by hardware.\n");
	printf("  --enable-lro: enable large receive offload.\n");
	printf("  --enable-rx-cksum: enable rx hardware checksum offload.\n");
	printf("  --disable-hw-vlan: disable hardware vlan.\n");
	printf("  --disable-hw-vlan-filter: disable hardware vlan filter.\n");
	printf("  --disable-hw-vlan-strip: disable hardware vlan strip.\n");
	printf("  --disable-hw-vlan-extend: disable hardware vlan extend.\n");
	printf("  --enable-drop-en: enable per queue packet drop.\n");
	printf("  --disable-rss: disable rss.\n");
	printf("  --port-topology=N: set port topology (N: paired (default) or "
	       "chained).\n");
	printf("  --forward-mode=N: set forwarding mode (N: %s).\n",
	       list_pkt_forwarding_modes());
	printf("  --rss-ip: set RSS functions to IPv4/IPv6 only .\n");
	printf("  --rss-udp: set RSS functions to IPv4/IPv6 + UDP.\n");
	printf("  --rxq=N: set the number of RX queues per port to N.\n");
	printf("  --rxd=N: set the number of descriptors in RX rings to N.\n");
	printf("  --txq=N: set the number of TX queues per port to N.\n");
	printf("  --txd=N: set the number of descriptors in TX rings to N.\n");
	printf("  --burst=N: set the number of packets per burst to N.\n");
	printf("  --mbcache=N: set the cache of mbuf memory pool to N.\n");
	printf("  --rxpt=N: set prefetch threshold register of RX rings to N.\n");
	printf("  --rxht=N: set the host threshold register of RX rings to N.\n");
	printf("  --rxfreet=N: set the free threshold of RX descriptors to N "
	       "(0 <= N < value of rxd).\n");
	printf("  --rxwt=N: set the write-back threshold register of RX rings to N.\n");
	printf("  --txpt=N: set the prefetch threshold register of TX rings to N.\n");
	printf("  --txht=N: set the nhost threshold register of TX rings to N.\n");
	printf("  --txwt=N: set the write-back threshold register of TX rings to N.\n");
	printf("  --txfreet=N: set the transmit free threshold of TX rings to N "
	       "(0 <= N <= value of txd).\n");
	printf("  --txrst=N: set the transmit RS bit threshold of TX rings to N "
	       "(0 <= N <= value of txd).\n");
	printf("  --txqflags=0xXXXXXXXX: hexadecimal bitmask of TX queue flags "
	       "(0 <= N <= 0x7FFFFFFF).\n");
	printf("  --tx-queue-stats-mapping=(port,queue,mapping)[,(port,queue,mapping]: "
	       "tx queues statistics counters mapping "
	       "(0 <= mapping <= %d).\n", RTE_ETHDEV_QUEUE_STAT_CNTRS - 1);
	printf("  --rx-queue-stats-mapping=(port,queue,mapping)[,(port,queue,mapping]: "
	       "rx queues statistics counters mapping "
	       "(0 <= mapping <= %d).\n", RTE_ETHDEV_QUEUE_STAT_CNTRS - 1);
	printf("  --no-flush-rx: Don't flush RX streams before forwarding."
	       " Used mainly with PCAP drivers.\n");
	printf("  --txpkts=X[,Y]*: set TX segment sizes"
		" or total packet length.\n");
	printf("  --disable-link-check: disable check on link status when "
	       "starting/stopping ports.\n");
}

#ifdef RTE_LIBRTE_CMDLINE
static int
init_peer_eth_addrs(char *config_filename)
{
	FILE *config_file;
	portid_t i;
	char buf[50];

	config_file = fopen(config_filename, "r");
	if (config_file == NULL) {
		perror("Failed to open eth config file\n");
		return -1;
	}

	for (i = 0; i < RTE_MAX_ETHPORTS; i++) {

		if (fgets(buf, sizeof(buf), config_file) == NULL)
			break;

		if (cmdline_parse_etheraddr(NULL, buf, &peer_eth_addrs[i],
				sizeof(peer_eth_addrs[i])) < 0) {
			printf("Bad MAC address format on line %d\n", i+1);
			fclose(config_file);
			return -1;
		}
	}
	fclose(config_file);
	nb_peer_eth_addrs = (portid_t) i;
	return 0;
}
#endif

/*
 * Parse the coremask given as argument (hexadecimal string) and set
 * the global configuration of forwarding cores.
 */
static void
parse_fwd_coremask(const char *coremask)
{
	char *end;
	unsigned long long int cm;

	/* parse hexadecimal string */
	end = NULL;
	cm = strtoull(coremask, &end, 16);
	if ((coremask[0] == '\0') || (end == NULL) || (*end != '\0'))
		rte_exit(EXIT_FAILURE, "Invalid fwd core mask\n");
	else if (set_fwd_lcores_mask((uint64_t) cm) < 0)
		rte_exit(EXIT_FAILURE, "coremask is not valid\n");
}

/*
 * Parse the coremask given as argument (hexadecimal string) and set
 * the global configuration of forwarding cores.
 */
static void
parse_fwd_portmask(const char *portmask)
{
	char *end;
	unsigned long long int pm;

	/* parse hexadecimal string */
	end = NULL;
	pm = strtoull(portmask, &end, 16);
	if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
		rte_exit(EXIT_FAILURE, "Invalid fwd port mask\n");
	else
		set_fwd_ports_mask((uint64_t) pm);
}


static int
parse_queue_stats_mapping_config(const char *q_arg, int is_rx)
{
	char s[256];
	const char *p, *p0 = q_arg;
	char *end;
	enum fieldnames {
		FLD_PORT = 0,
		FLD_QUEUE,
		FLD_STATS_COUNTER,
		_NUM_FLD
	};
	unsigned long int_fld[_NUM_FLD];
	char *str_fld[_NUM_FLD];
	int i;
	unsigned size;

	/* reset from value set at definition */
	is_rx ? (nb_rx_queue_stats_mappings = 0) : (nb_tx_queue_stats_mappings = 0);

	while ((p = strchr(p0,'(')) != NULL) {
		++p;
		if((p0 = strchr(p,')')) == NULL)
			return -1;

		size = p0 - p;
		if(size >= sizeof(s))
			return -1;

		snprintf(s, sizeof(s), "%.*s", size, p);
		if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') != _NUM_FLD)
			return -1;
		for (i = 0; i < _NUM_FLD; i++){
			errno = 0;
			int_fld[i] = strtoul(str_fld[i], &end, 0);
			if (errno != 0 || end == str_fld[i] || int_fld[i] > 255)
				return -1;
		}
		/* Check mapping field is in correct range (0..RTE_ETHDEV_QUEUE_STAT_CNTRS-1) */
		if (int_fld[FLD_STATS_COUNTER] >= RTE_ETHDEV_QUEUE_STAT_CNTRS) {
			printf("Stats counter not in the correct range 0..%d\n",
					RTE_ETHDEV_QUEUE_STAT_CNTRS - 1);
			return -1;
		}

		if (!is_rx) {
			if ((nb_tx_queue_stats_mappings >=
						MAX_TX_QUEUE_STATS_MAPPINGS)) {
				printf("exceeded max number of TX queue "
						"statistics mappings: %hu\n",
						nb_tx_queue_stats_mappings);
				return -1;
			}
			tx_queue_stats_mappings_array[nb_tx_queue_stats_mappings].port_id =
				(uint8_t)int_fld[FLD_PORT];
			tx_queue_stats_mappings_array[nb_tx_queue_stats_mappings].queue_id =
				(uint8_t)int_fld[FLD_QUEUE];
			tx_queue_stats_mappings_array[nb_tx_queue_stats_mappings].stats_counter_id =
				(uint8_t)int_fld[FLD_STATS_COUNTER];
			++nb_tx_queue_stats_mappings;
		}
		else {
			if ((nb_rx_queue_stats_mappings >=
						MAX_RX_QUEUE_STATS_MAPPINGS)) {
				printf("exceeded max number of RX queue "
						"statistics mappings: %hu\n",
						nb_rx_queue_stats_mappings);
				return -1;
			}
			rx_queue_stats_mappings_array[nb_rx_queue_stats_mappings].port_id =
				(uint8_t)int_fld[FLD_PORT];
			rx_queue_stats_mappings_array[nb_rx_queue_stats_mappings].queue_id =
				(uint8_t)int_fld[FLD_QUEUE];
			rx_queue_stats_mappings_array[nb_rx_queue_stats_mappings].stats_counter_id =
				(uint8_t)int_fld[FLD_STATS_COUNTER];
			++nb_rx_queue_stats_mappings;
		}

	}
/* Reassign the rx/tx_queue_stats_mappings pointer to point to this newly populated array rather */
/* than to the default array (that was set at its definition) */
	is_rx ? (rx_queue_stats_mappings = rx_queue_stats_mappings_array) :
		(tx_queue_stats_mappings = tx_queue_stats_mappings_array);
	return 0;
}

static int
parse_portnuma_config(const char *q_arg)
{
	char s[256];
	const char *p, *p0 = q_arg;
	char *end;
	uint8_t i,port_id,socket_id;
	unsigned size;
	enum fieldnames {
		FLD_PORT = 0,
		FLD_SOCKET,
		_NUM_FLD
	};
	unsigned long int_fld[_NUM_FLD];
	char *str_fld[_NUM_FLD];
	portid_t pid;

	/* reset from value set at definition */
	while ((p = strchr(p0,'(')) != NULL) {
		++p;
		if((p0 = strchr(p,')')) == NULL)
			return -1;

		size = p0 - p;
		if(size >= sizeof(s))
			return -1;

		snprintf(s, sizeof(s), "%.*s", size, p);
		if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') != _NUM_FLD)
			return -1;
		for (i = 0; i < _NUM_FLD; i++) {
			errno = 0;
			int_fld[i] = strtoul(str_fld[i], &end, 0);
			if (errno != 0 || end == str_fld[i] || int_fld[i] > 255)
				return -1;
		}
		port_id = (uint8_t)int_fld[FLD_PORT];
		if (port_id_is_invalid(port_id, ENABLED_WARN)) {
			printf("Valid port range is [0");
			FOREACH_PORT(pid, ports)
				printf(", %d", pid);
			printf("]\n");
			return -1;
		}
		socket_id = (uint8_t)int_fld[FLD_SOCKET];
		if(socket_id >= max_socket) {
			printf("Invalid socket id, range is [0, %d]\n",
				 max_socket - 1);
			return -1;
		}
		port_numa[port_id] = socket_id;
	}

	return 0;
}

static int
parse_ringnuma_config(const char *q_arg)
{
	char s[256];
	const char *p, *p0 = q_arg;
	char *end;
	uint8_t i,port_id,ring_flag,socket_id;
	unsigned size;
	enum fieldnames {
		FLD_PORT = 0,
		FLD_FLAG,
		FLD_SOCKET,
		_NUM_FLD
	};
	unsigned long int_fld[_NUM_FLD];
	char *str_fld[_NUM_FLD];
	portid_t pid;
	#define RX_RING_ONLY 0x1
	#define TX_RING_ONLY 0x2
	#define RXTX_RING    0x3

	/* reset from value set at definition */
	while ((p = strchr(p0,'(')) != NULL) {
		++p;
		if((p0 = strchr(p,')')) == NULL)
			return -1;

		size = p0 - p;
		if(size >= sizeof(s))
			return -1;

		snprintf(s, sizeof(s), "%.*s", size, p);
		if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') != _NUM_FLD)
			return -1;
		for (i = 0; i < _NUM_FLD; i++) {
			errno = 0;
			int_fld[i] = strtoul(str_fld[i], &end, 0);
			if (errno != 0 || end == str_fld[i] || int_fld[i] > 255)
				return -1;
		}
		port_id = (uint8_t)int_fld[FLD_PORT];
		if (port_id_is_invalid(port_id, ENABLED_WARN)) {
			printf("Valid port range is [0");
			FOREACH_PORT(pid, ports)
				printf(", %d", pid);
			printf("]\n");
			return -1;
		}
		socket_id = (uint8_t)int_fld[FLD_SOCKET];
		if (socket_id >= max_socket) {
			printf("Invalid socket id, range is [0, %d]\n",
				max_socket - 1);
			return -1;
		}
		ring_flag = (uint8_t)int_fld[FLD_FLAG];
		if ((ring_flag < RX_RING_ONLY) || (ring_flag > RXTX_RING)) {
			printf("Invalid ring-flag=%d config for port =%d\n",
				ring_flag,port_id);
			return -1;
		}

		switch (ring_flag & RXTX_RING) {
		case RX_RING_ONLY:
			rxring_numa[port_id] = socket_id;
			break;
		case TX_RING_ONLY:
			txring_numa[port_id] = socket_id;
			break;
		case RXTX_RING:
			rxring_numa[port_id] = socket_id;
			txring_numa[port_id] = socket_id;
			break;
		default:
			printf("Invalid ring-flag=%d config for port=%d\n",
				ring_flag,port_id);
			break;
		}
	}

	return 0;
}

void
launch_args_parse(int argc, char** argv)
{
	int n, opt;
	char **argvopt;
	int opt_idx;
	enum { TX, RX };

	static struct option lgopts[] = {
		{ "help",			0, 0, 0 },
#ifdef RTE_LIBRTE_CMDLINE
		{ "interactive",		0, 0, 0 },
		{ "auto-start",			0, 0, 0 },
		{ "eth-peers-configfile",	1, 0, 0 },
		{ "eth-peer",			1, 0, 0 },
#endif
		{ "ports",			1, 0, 0 },
		{ "nb-cores",			1, 0, 0 },
		{ "nb-ports",			1, 0, 0 },
		{ "coremask",			1, 0, 0 },
		{ "portmask",			1, 0, 0 },
		{ "numa",			0, 0, 0 },
		{ "mp-anon",			0, 0, 0 },
		{ "port-numa-config",           1, 0, 0 },
		{ "ring-numa-config",           1, 0, 0 },
		{ "socket-num",			1, 0, 0 },
		{ "mbuf-size",			1, 0, 0 },
		{ "total-num-mbufs",		1, 0, 0 },
		{ "max-pkt-len",		1, 0, 0 },
		{ "pkt-filter-mode",            1, 0, 0 },
		{ "pkt-filter-report-hash",     1, 0, 0 },
		{ "pkt-filter-size",            1, 0, 0 },
		{ "pkt-filter-drop-queue",      1, 0, 0 },
		{ "crc-strip",                  0, 0, 0 },
		{ "enable-lro",                 0, 0, 0 },
		{ "enable-rx-cksum",            0, 0, 0 },
		{ "enable-scatter",             0, 0, 0 },
		{ "disable-hw-vlan",            0, 0, 0 },
		{ "disable-hw-vlan-filter",     0, 0, 0 },
		{ "disable-hw-vlan-strip",      0, 0, 0 },
		{ "disable-hw-vlan-extend",     0, 0, 0 },
		{ "enable-drop-en",            0, 0, 0 },
		{ "disable-rss",                0, 0, 0 },
		{ "port-topology",              1, 0, 0 },
		{ "forward-mode",               1, 0, 0 },
		{ "rss-ip",			0, 0, 0 },
		{ "rss-udp",			0, 0, 0 },
		{ "rxq",			1, 0, 0 },
		{ "txq",			1, 0, 0 },
		{ "rxd",			1, 0, 0 },
		{ "txd",			1, 0, 0 },
		{ "burst",			1, 0, 0 },
		{ "mbcache",			1, 0, 0 },
		{ "txpt",			1, 0, 0 },
		{ "txht",			1, 0, 0 },
		{ "txwt",			1, 0, 0 },
		{ "txfreet",			1, 0, 0 },
		{ "txrst",			1, 0, 0 },
		{ "txqflags",			1, 0, 0 },
		{ "rxpt",			1, 0, 0 },
		{ "rxht",			1, 0, 0 },
		{ "rxwt",			1, 0, 0 },
		{ "rxfreet",                    1, 0, 0 },
		{ "tx-queue-stats-mapping",	1, 0, 0 },
		{ "rx-queue-stats-mapping",	1, 0, 0 },
		{ "no-flush-rx",	0, 0, 0 },
		{ "txpkts",			1, 0, 0 },
		{ "disable-link-check",		0, 0, 0 },
		{ 0, 0, 0, 0 },
	};

	argvopt = argv;

#ifdef RTE_LIBRTE_CMDLINE
#define SHORTOPTS "i"
#else
#define SHORTOPTS ""
#endif
	while ((opt = getopt_long(argc, argvopt, SHORTOPTS "ah",
				 lgopts, &opt_idx)) != EOF) {
		switch (opt) {
#ifdef RTE_LIBRTE_CMDLINE
		case 'i':
			printf("Interactive-mode selected\n");
			interactive = 1;
			break;
#endif
		case 'a':
			printf("Auto-start selected\n");
			auto_start = 1;
			break;

		case 0: /*long options */
			if (!strcmp(lgopts[opt_idx].name, "help")) {
				usage(argv[0]);
				rte_exit(EXIT_SUCCESS, "Displayed help\n");
			}
#ifdef RTE_LIBRTE_CMDLINE
			if (!strcmp(lgopts[opt_idx].name, "interactive")) {
				printf("Interactive-mode selected\n");
				interactive = 1;
			}
			if (!strcmp(lgopts[opt_idx].name, "auto-start")) {
				printf("Auto-start selected\n");
				auto_start = 1;
			}
			if (!strcmp(lgopts[opt_idx].name,
				    "eth-peers-configfile")) {
				if (init_peer_eth_addrs(optarg) != 0)
					rte_exit(EXIT_FAILURE,
						 "Cannot open logfile\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "eth-peer")) {
				char *port_end;
				uint8_t c, peer_addr[6];

				errno = 0;
				n = strtoul(optarg, &port_end, 10);
				if (errno != 0 || port_end == optarg || *port_end++ != ',')
					rte_exit(EXIT_FAILURE,
						 "Invalid eth-peer: %s", optarg);
				if (n >= RTE_MAX_ETHPORTS)
					rte_exit(EXIT_FAILURE,
						 "eth-peer: port %d >= RTE_MAX_ETHPORTS(%d)\n",
						 n, RTE_MAX_ETHPORTS);

				if (cmdline_parse_etheraddr(NULL, port_end,
						&peer_addr, sizeof(peer_addr)) < 0)
					rte_exit(EXIT_FAILURE,
						 "Invalid ethernet address: %s\n",
						 port_end);
				for (c = 0; c < 6; c++)
					peer_eth_addrs[n].addr_bytes[c] =
						peer_addr[c];
				nb_peer_eth_addrs++;
			}
#endif
			if (!strcmp(lgopts[opt_idx].name, "nb-ports")) {
				n = atoi(optarg);
				if (n > 0 && n <= nb_ports)
					nb_fwd_ports = (uint8_t) n;
				else
					rte_exit(EXIT_FAILURE,
						 "Invalid port %d\n", n);
			}
			if (!strcmp(lgopts[opt_idx].name, "nb-cores")) {
				n = atoi(optarg);
				if (n > 0 && n <= nb_lcores)
					nb_fwd_lcores = (uint8_t) n;
				else
					rte_exit(EXIT_FAILURE,
						 "nb-cores should be > 0 and <= %d\n",
						 nb_lcores);
			}
			if (!strcmp(lgopts[opt_idx].name, "coremask"))
				parse_fwd_coremask(optarg);
			if (!strcmp(lgopts[opt_idx].name, "portmask"))
				parse_fwd_portmask(optarg);
			if (!strcmp(lgopts[opt_idx].name, "numa")) {
				numa_support = 1;
				memset(port_numa,NUMA_NO_CONFIG,RTE_MAX_ETHPORTS);
				memset(rxring_numa,NUMA_NO_CONFIG,RTE_MAX_ETHPORTS);
				memset(txring_numa,NUMA_NO_CONFIG,RTE_MAX_ETHPORTS);
			}
			if (!strcmp(lgopts[opt_idx].name, "mp-anon")) {
				mp_anon = 1;
			}
			if (!strcmp(lgopts[opt_idx].name, "port-numa-config")) {
				if (parse_portnuma_config(optarg))
					rte_exit(EXIT_FAILURE,
					   "invalid port-numa configuration\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "ring-numa-config"))
				if (parse_ringnuma_config(optarg))
					rte_exit(EXIT_FAILURE,
					   "invalid ring-numa configuration\n");
			if (!strcmp(lgopts[opt_idx].name, "socket-num")) {
				n = atoi(optarg);
				if((uint8_t)n < max_socket)
					socket_num = (uint8_t)n;
				else
					rte_exit(EXIT_FAILURE,
						"The socket number should be < %d\n",
						max_socket);
			}
			if (!strcmp(lgopts[opt_idx].name, "mbuf-size")) {
				n = atoi(optarg);
				if (n > 0 && n <= 0xFFFF)
					mbuf_data_size = (uint16_t) n;
				else
					rte_exit(EXIT_FAILURE,
						 "mbuf-size should be > 0 and < 65536\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "total-num-mbufs")) {
				n = atoi(optarg);
				if (n > 1024)
					param_total_num_mbufs = (unsigned)n;
				else
					rte_exit(EXIT_FAILURE,
						 "total-num-mbufs should be > 1024\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "max-pkt-len")) {
				n = atoi(optarg);
				if (n >= ETHER_MIN_LEN) {
					rx_mode.max_rx_pkt_len = (uint32_t) n;
					if (n > ETHER_MAX_LEN)
					    rx_mode.jumbo_frame = 1;
				} else
					rte_exit(EXIT_FAILURE,
						 "Invalid max-pkt-len=%d - should be > %d\n",
						 n, ETHER_MIN_LEN);
			}
			if (!strcmp(lgopts[opt_idx].name, "pkt-filter-mode")) {
				if (!strcmp(optarg, "signature"))
					fdir_conf.mode =
						RTE_FDIR_MODE_SIGNATURE;
				else if (!strcmp(optarg, "perfect"))
					fdir_conf.mode = RTE_FDIR_MODE_PERFECT;
				else if (!strcmp(optarg, "perfect-mac-vlan"))
					fdir_conf.mode = RTE_FDIR_MODE_PERFECT_MAC_VLAN;
				else if (!strcmp(optarg, "perfect-tunnel"))
					fdir_conf.mode = RTE_FDIR_MODE_PERFECT_TUNNEL;
				else if (!strcmp(optarg, "none"))
					fdir_conf.mode = RTE_FDIR_MODE_NONE;
				else
					rte_exit(EXIT_FAILURE,
						 "pkt-mode-invalid %s invalid - must be: "
						 "none, signature, perfect, perfect-mac-vlan"
						 " or perfect-tunnel\n",
						 optarg);
			}
			if (!strcmp(lgopts[opt_idx].name,
				    "pkt-filter-report-hash")) {
				if (!strcmp(optarg, "none"))
					fdir_conf.status =
						RTE_FDIR_NO_REPORT_STATUS;
				else if (!strcmp(optarg, "match"))
					fdir_conf.status =
						RTE_FDIR_REPORT_STATUS;
				else if (!strcmp(optarg, "always"))
					fdir_conf.status =
						RTE_FDIR_REPORT_STATUS_ALWAYS;
				else
					rte_exit(EXIT_FAILURE,
						 "pkt-filter-report-hash %s invalid "
						 "- must be: none or match or always\n",
						 optarg);
			}
			if (!strcmp(lgopts[opt_idx].name, "pkt-filter-size")) {
				if (!strcmp(optarg, "64K"))
					fdir_conf.pballoc =
						RTE_FDIR_PBALLOC_64K;
				else if (!strcmp(optarg, "128K"))
					fdir_conf.pballoc =
						RTE_FDIR_PBALLOC_128K;
				else if (!strcmp(optarg, "256K"))
					fdir_conf.pballoc =
						RTE_FDIR_PBALLOC_256K;
				else
					rte_exit(EXIT_FAILURE, "pkt-filter-size %s invalid -"
						 " must be: 64K or 128K or 256K\n",
						 optarg);
			}
			if (!strcmp(lgopts[opt_idx].name,
				    "pkt-filter-drop-queue")) {
				n = atoi(optarg);
				if (n >= 0)
					fdir_conf.drop_queue = (uint8_t) n;
				else
					rte_exit(EXIT_FAILURE,
						 "drop queue %d invalid - must"
						 "be >= 0 \n", n);
			}
			if (!strcmp(lgopts[opt_idx].name, "crc-strip"))
				rx_mode.hw_strip_crc = 1;
			if (!strcmp(lgopts[opt_idx].name, "enable-lro"))
				rx_mode.enable_lro = 1;
			if (!strcmp(lgopts[opt_idx].name, "enable-scatter"))
				rx_mode.enable_scatter = 1;
			if (!strcmp(lgopts[opt_idx].name, "enable-rx-cksum"))
				rx_mode.hw_ip_checksum = 1;

			if (!strcmp(lgopts[opt_idx].name, "disable-hw-vlan")) {
				rx_mode.hw_vlan_filter = 0;
				rx_mode.hw_vlan_strip  = 0;
				rx_mode.hw_vlan_extend = 0;
			}

			if (!strcmp(lgopts[opt_idx].name,
					"disable-hw-vlan-filter"))
				rx_mode.hw_vlan_filter = 0;

			if (!strcmp(lgopts[opt_idx].name,
					"disable-hw-vlan-strip"))
				rx_mode.hw_vlan_strip  = 0;

			if (!strcmp(lgopts[opt_idx].name,
					"disable-hw-vlan-extend"))
				rx_mode.hw_vlan_extend = 0;

			if (!strcmp(lgopts[opt_idx].name, "enable-drop-en"))
				rx_drop_en = 1;

			if (!strcmp(lgopts[opt_idx].name, "disable-rss"))
				rss_hf = 0;
			if (!strcmp(lgopts[opt_idx].name, "port-topology")) {
				if (!strcmp(optarg, "paired"))
					port_topology = PORT_TOPOLOGY_PAIRED;
				else if (!strcmp(optarg, "chained"))
					port_topology = PORT_TOPOLOGY_CHAINED;
				else if (!strcmp(optarg, "loop"))
					port_topology = PORT_TOPOLOGY_LOOP;
				else
					rte_exit(EXIT_FAILURE, "port-topology %s invalid -"
						 " must be: paired or chained \n",
						 optarg);
			}
			if (!strcmp(lgopts[opt_idx].name, "forward-mode"))
				set_pkt_forwarding_mode(optarg);
			if (!strcmp(lgopts[opt_idx].name, "rss-ip"))
				rss_hf = ETH_RSS_IP;
			if (!strcmp(lgopts[opt_idx].name, "rss-udp"))
				rss_hf = ETH_RSS_UDP;
			if (!strcmp(lgopts[opt_idx].name, "rxq")) {
				n = atoi(optarg);
				if (n >= 0 && n <= (int) MAX_QUEUE_ID)
					nb_rxq = (queueid_t) n;
				else
					rte_exit(EXIT_FAILURE, "rxq %d invalid - must be"
						  " >= 0 && <= %d\n", n,
						  (int) MAX_QUEUE_ID);
			}
			if (!strcmp(lgopts[opt_idx].name, "txq")) {
				n = atoi(optarg);
				if (n >= 0 && n <= (int) MAX_QUEUE_ID)
					nb_txq = (queueid_t) n;
				else
					rte_exit(EXIT_FAILURE, "txq %d invalid - must be"
						  " >= 0 && <= %d\n", n,
						  (int) MAX_QUEUE_ID);
			}
			if (!nb_rxq && !nb_txq) {
				rte_exit(EXIT_FAILURE, "Either rx or tx queues should "
						"be non-zero\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "burst")) {
				n = atoi(optarg);
				if ((n >= 1) && (n <= MAX_PKT_BURST))
					nb_pkt_per_burst = (uint16_t) n;
				else
					rte_exit(EXIT_FAILURE,
						 "burst must >= 1 and <= %d]",
						 MAX_PKT_BURST);
			}
			if (!strcmp(lgopts[opt_idx].name, "mbcache")) {
				n = atoi(optarg);
				if ((n >= 0) &&
				    (n <= RTE_MEMPOOL_CACHE_MAX_SIZE))
					mb_mempool_cache = (uint16_t) n;
				else
					rte_exit(EXIT_FAILURE,
						 "mbcache must be >= 0 and <= %d\n",
						 RTE_MEMPOOL_CACHE_MAX_SIZE);
			}
			if (!strcmp(lgopts[opt_idx].name, "txfreet")) {
				n = atoi(optarg);
				if (n >= 0)
					tx_free_thresh = (int16_t)n;
				else
					rte_exit(EXIT_FAILURE, "txfreet must be >= 0\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "txrst")) {
				n = atoi(optarg);
				if (n >= 0)
					tx_rs_thresh = (int16_t)n;
				else
					rte_exit(EXIT_FAILURE, "txrst must be >= 0\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "txqflags")) {
				char *end = NULL;
				n = strtoul(optarg, &end, 16);
				if (n >= 0)
					txq_flags = (int32_t)n;
				else
					rte_exit(EXIT_FAILURE,
						 "txqflags must be >= 0\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "rxd")) {
				n = atoi(optarg);
				if (n > 0) {
					if (rx_free_thresh >= n)
						rte_exit(EXIT_FAILURE,
							 "rxd must be > "
							 "rx_free_thresh(%d)\n",
							 (int)rx_free_thresh);
					else
						nb_rxd = (uint16_t) n;
				} else
					rte_exit(EXIT_FAILURE,
						 "rxd(%d) invalid - must be > 0\n",
						 n);
			}
			if (!strcmp(lgopts[opt_idx].name, "txd")) {
				n = atoi(optarg);
				if (n > 0)
					nb_txd = (uint16_t) n;
				else
					rte_exit(EXIT_FAILURE, "txd must be in > 0\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "txpt")) {
				n = atoi(optarg);
				if (n >= 0)
					tx_pthresh = (int8_t)n;
				else
					rte_exit(EXIT_FAILURE, "txpt must be >= 0\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "txht")) {
				n = atoi(optarg);
				if (n >= 0)
					tx_hthresh = (int8_t)n;
				else
					rte_exit(EXIT_FAILURE, "txht must be >= 0\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "txwt")) {
				n = atoi(optarg);
				if (n >= 0)
					tx_wthresh = (int8_t)n;
				else
					rte_exit(EXIT_FAILURE, "txwt must be >= 0\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "rxpt")) {
				n = atoi(optarg);
				if (n >= 0)
					rx_pthresh = (int8_t)n;
				else
					rte_exit(EXIT_FAILURE, "rxpt must be >= 0\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "rxht")) {
				n = atoi(optarg);
				if (n >= 0)
					rx_hthresh = (int8_t)n;
				else
					rte_exit(EXIT_FAILURE, "rxht must be >= 0\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "rxwt")) {
				n = atoi(optarg);
				if (n >= 0)
					rx_wthresh = (int8_t)n;
				else
					rte_exit(EXIT_FAILURE, "rxwt must be >= 0\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "rxfreet")) {
				n = atoi(optarg);
				if (n >= 0)
					rx_free_thresh = (int16_t)n;
				else
					rte_exit(EXIT_FAILURE, "rxfreet must be >= 0\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "tx-queue-stats-mapping")) {
				if (parse_queue_stats_mapping_config(optarg, TX)) {
					rte_exit(EXIT_FAILURE,
						 "invalid TX queue statistics mapping config entered\n");
				}
			}
			if (!strcmp(lgopts[opt_idx].name, "rx-queue-stats-mapping")) {
				if (parse_queue_stats_mapping_config(optarg, RX)) {
					rte_exit(EXIT_FAILURE,
						 "invalid RX queue statistics mapping config entered\n");
				}
			}
			if (!strcmp(lgopts[opt_idx].name, "txpkts")) {
				unsigned seg_lengths[RTE_MAX_SEGS_PER_PKT];
				unsigned int nb_segs;

				nb_segs = parse_item_list(optarg, "txpkt segments",
						RTE_MAX_SEGS_PER_PKT, seg_lengths, 0);
				if (nb_segs > 0)
					set_tx_pkt_segments(seg_lengths, nb_segs);
				else
					rte_exit(EXIT_FAILURE, "bad txpkts\n");
			}
			if (!strcmp(lgopts[opt_idx].name, "no-flush-rx"))
				no_flush_rx = 1;
			if (!strcmp(lgopts[opt_idx].name, "disable-link-check"))
				no_link_check = 1;

			break;
		case 'h':
			usage(argv[0]);
			rte_exit(EXIT_SUCCESS, "Displayed help\n");
			break;
		default:
			usage(argv[0]);
			rte_exit(EXIT_FAILURE,
				 "Command line is incomplete or incorrect\n");
			break;
		}
	}
}
