/*
// Copyright (c) 2010-2017 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
*/

#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <rte_cycles.h>
#include <rte_version.h>

#include "input.h"
#include "cmd_parser.h"
#include "commands.h"
#include "run.h"
#include "display.h"
#include "log.h"
#include "prox_cfg.h"
#include "prox_port_cfg.h"
#include "task_base.h"
#include "lconf.h"
#include "main.h"
#include "parse_utils.h"
#include "stats_parser.h"
#include "stats_port.h"
#include "stats_latency.h"
#include "stats_global.h"
#include "stats_prio_task.h"

#include "handle_routing.h"
#include "handle_qinq_decap4.h"
#include "handle_lat.h"
#include "handle_arp.h"
#include "handle_gen.h"
#include "handle_acl.h"
#include "handle_irq.h"
#include "defines.h"
#include "prox_cfg.h"
#include "version.h"
#include "stats_latency.h"
#include "handle_cgnat.h"
#include "handle_impair.h"
#include "rx_pkt.h"

static int core_task_is_valid(int lcore_id, int task_id)
{
	if (lcore_id >= RTE_MAX_LCORE) {
		plog_err("Invalid core id %u (lcore ID above %d)\n", lcore_id, RTE_MAX_LCORE);
		return 0;
	}
	else if (!prox_core_active(lcore_id, 0)) {
		plog_err("Invalid core id %u (lcore is not active)\n", lcore_id);
		return 0;
	}
	else if (task_id >= lcore_cfg[lcore_id].n_tasks_all) {
		plog_err("Invalid task id (valid task IDs for core %u are below %u)\n",
			 lcore_id, lcore_cfg[lcore_id].n_tasks_all);
		return 0;
	}
	return 1;
}

static int cores_task_are_valid(unsigned int *lcores, int task_id, unsigned int nb_cores)
{
	unsigned int lcore_id;
	for (unsigned int i = 0; i < nb_cores; i++) {
		lcore_id = lcores[i];
		if (core_task_is_valid(lcore_id, task_id) == 0)
			return 0;
	}
	return 1;
}

static int parse_cores_task(const char *str, uint32_t *lcore_id, uint32_t *task_id, unsigned *nb_cores)
{
	char str_lcore_id[128];
	int ret;

	if (2 != sscanf(str, "%s %u", str_lcore_id, task_id))
		return -1;

	if ((ret = parse_list_set(lcore_id, str_lcore_id, RTE_MAX_LCORE)) <= 0) {
		plog_err("Invalid core while parsing command (%s)\n", get_parse_err());
		return -1;
	}
	*nb_cores = ret;

	return 0;
}

static int parse_cores_tasks(const char *str, uint32_t *lcore_id, uint32_t *task_id, unsigned *nb_cores, unsigned *nb_tasks)
{
	char str_lcore_id[128], str_task_id[128];
	int ret;

	if (2 != sscanf(str, "%s %s", str_lcore_id, str_task_id))
		return -1;

	if ((ret = parse_list_set(lcore_id, str_lcore_id, RTE_MAX_LCORE)) <= 0) {
		plog_err("Invalid core while parsing command (%s)\n", get_parse_err());
		return -1;
	}
	*nb_cores = ret;

	if ((ret = parse_list_set(task_id, str_task_id, MAX_TASKS_PER_CORE)) <= 0) {
		plog_err("Invalid task while parsing command (%s)\n", get_parse_err());
		return -1;
	}
	*nb_tasks = ret;

	return 0;
}

static const char *strchr_skip_twice(const char *str, int chr)
{
	str = strchr(str, chr);
	if (!str)
		return NULL;
	str = str + 1;

	str = strchr(str, chr);
	if (!str)
		return NULL;
	return str + 1;
}

static int parse_cmd_quit(const char *str, struct input *input)
{
	if (strcmp(str, "") != 0) {
		return -1;
	}

	quit();
	return 0;
}

static int parse_cmd_quit_force(const char *str, struct input *input)
{
	if (strcmp(str, "") != 0) {
		return -1;
	}

	abort();
}

static int parse_cmd_history(const char *str, struct input *input)
{
	if (strcmp(str, "") != 0) {
		return -1;
	}

	if (input->history) {
		input->history(input);
		return 0;
	}
	plog_err("Invalid history comand ");
	return -1;
}

static int parse_cmd_echo(const char *str, struct input *input)
{
	if (strcmp(str, "") == 0) {
		return -1;
	}

	char resolved[2048];

	if (parse_vars(resolved, sizeof(resolved), str)) {
		return 0;
	}

	if (input->reply) {
		if (strlen(resolved) + 2 < sizeof(resolved)) {
			resolved[strlen(resolved) + 1] = 0;
			resolved[strlen(resolved)] = '\n';
		}
		else
			return 0;

		input->reply(input, resolved, strlen(resolved));
	} else
		plog_info("%s\n", resolved);

	return 0;
}

static int parse_cmd_reset_stats(const char *str, struct input *input)
{
	if (strcmp(str, "") != 0) {
		return -1;
	}

	stats_reset();
	return 0;
}

static int parse_cmd_reset_lat_stats(const char *str, struct input *input)
{
	if (strcmp(str, "") != 0) {
		return -1;
	}

	stats_latency_reset();
	return 0;
}

static int parse_cmd_trace(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], task_id, nb_packets, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (sscanf(str, "%u", &nb_packets) != 1)
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			cmd_trace(lcores[i], task_id, nb_packets);
		}
	}
	return 0;
}

static int parse_cmd_dump_rx(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], task_id, nb_packets, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (sscanf(str, "%u", &nb_packets) != 1) {
		return -1;
	}

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			if (lcores[i] > RTE_MAX_LCORE) {
				plog_warn("core_id too high, maximum allowed is: %u\n", RTE_MAX_LCORE);
				return -1;
			} else if (task_id >= lcore_cfg[lcores[i]].n_tasks_all) {
				plog_warn("task_id too high, should be in [0, %u]\n", lcore_cfg[lcores[i]].n_tasks_all - 1);
				return -1;
			} else {
				struct lcore_cfg *lconf = &lcore_cfg[lcores[i]];
				struct task_base *tbase = lconf->tasks_all[task_id];
				int prev_count = tbase->aux->rx_prev_count;
				if (((prev_count) && (tbase->aux->rx_pkt_prev[prev_count - 1] == rx_pkt_dummy))
					|| (tbase->rx_pkt == rx_pkt_dummy)) {
					plog_warn("Unable to dump_rx as rx_pkt_dummy\n");
					return -1;
				}
			}
			cmd_dump(lcores[i], task_id, nb_packets, input, 1, 0);
		}
	}
	return 0;
}

static int parse_cmd_pps_unit(const char *str, struct input *input)
{
	uint32_t val;

	if (sscanf(str, "%u", &val) != 1) {
		return -1;
	}
	display_set_pps_unit(val);
	return 0;
}

static int parse_cmd_dump_tx(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], task_id, nb_packets, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (sscanf(str, "%u", &nb_packets) != 1) {
		return -1;
	}

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			cmd_dump(lcores[i], task_id, nb_packets, input, 0, 1);
		}
	}
	return 0;
}

static int parse_cmd_rate(const char *str, struct input *input)
{
	unsigned queue, port, rate;

	if (sscanf(str, "%u %u %u", &queue, &port, &rate) != 3) {
		return -1;
	}

	if (port > PROX_MAX_PORTS) {
		plog_err("Max port id allowed is %u (specified %u)\n", PROX_MAX_PORTS, port);
	}
	else if (!prox_port_cfg[port].active) {
		plog_err("Port %u not active\n", port);
	}
	else if (queue >= prox_port_cfg[port].n_txq) {
		plog_err("Number of active queues is %u\n",
			 prox_port_cfg[port].n_txq);
	}
	else if (rate > prox_port_cfg[port].link_speed) {
		plog_err("Max rate allowed on port %u queue %u is %u Mbps\n",
			 port, queue, prox_port_cfg[port].link_speed);
	}
	else {
		if (rate == 0) {
			plog_info("Disabling rate limiting on port %u queue %u\n",
				  port, queue);
		}
		else {
			plog_info("Setting rate limiting to %u Mbps on port %u queue %u\n",
				  rate, port, queue);
		}
		rte_eth_set_queue_rate_limit(port, queue, rate);
	}
	return 0;
}

int task_is_mode_and_submode(uint32_t lcore_id, uint32_t task_id, const char *mode, const char *sub_mode)
{
	struct task_args *targs = &lcore_cfg[lcore_id].targs[task_id];

	return !strcmp(targs->task_init->mode_str, mode) && !strcmp(targs->sub_mode_str, sub_mode);
}

int task_is_mode(uint32_t lcore_id, uint32_t task_id, const char *mode)
{
	struct task_init *t = lcore_cfg[lcore_id].targs[task_id].task_init;

	return !strcmp(t->mode_str, mode);
}

int task_is_sub_mode(uint32_t lcore_id, uint32_t task_id, const char *sub_mode)
{
	struct task_args *targs = &lcore_cfg[lcore_id].targs[task_id];

	return !strcmp(targs->sub_mode_str, sub_mode);
}

static void log_pkt_count(uint32_t count, uint32_t lcore_id, uint32_t task_id)
{
	if (count == UINT32_MAX)
		plog_info("Core %u task %u will keep sending packets\n", lcore_id, task_id);
	else if (count == 0)
		plog_info("Core %u task %u waits for next count command\n", lcore_id, task_id);
	else
		plog_info("Core %u task %u stopping after %u packets\n", lcore_id, task_id, count);
}

static int parse_cmd_count(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, count, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (sscanf(str, "%u", &count) != 1)
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			if ((!task_is_mode_and_submode(lcore_id, task_id, "gen", "")) && (!task_is_mode_and_submode(lcore_id, task_id, "gen", "l3"))) {
				plog_err("Core %u task %u is not generating packets\n", lcore_id, task_id);
			}
			else {
				struct task_base *task = lcore_cfg[lcore_id].tasks_all[task_id];

				log_pkt_count(count, lcore_id, task_id);
				task_gen_set_pkt_count(task, count);
			}
		}
	}
	return 0;
}

static int parse_cmd_set_probability(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;
	float probability;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (sscanf(str, "%f", &probability) != 1)
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			if ((!task_is_mode_and_submode(lcore_id, task_id, "impair", "")) && (!task_is_mode_and_submode(lcore_id, task_id, "impair", "l3"))){
				plog_err("Core %u task %u is not impairing packets\n", lcore_id, task_id);
			} else {
				struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];
				task_impair_set_proba(tbase, probability);
			}
		}
	}
	return 0;
}

static int parse_cmd_delay_us(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, delay_us, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (sscanf(str, "%d", &delay_us) != 1)
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			if ((!task_is_mode_and_submode(lcore_id, task_id, "impair", "")) && (!task_is_mode_and_submode(lcore_id, task_id, "impair", "l3"))){
				plog_err("Core %u task %u is not impairing packets\n", lcore_id, task_id);
			} else {
				struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];
				task_impair_set_delay_us(tbase, delay_us, 0);
			}
		}
	}
	return 0;
}

static int parse_cmd_random_delay_us(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, delay_us, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (sscanf(str, "%d", &delay_us) != 1)
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			if ((!task_is_mode_and_submode(lcore_id, task_id, "impair", "")) && (!task_is_mode_and_submode(lcore_id, task_id, "impair", "l3"))){
				plog_err("Core %u task %u is not impairing packets\n", lcore_id, task_id);
			} else {
				struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];
				task_impair_set_delay_us(tbase, 0, delay_us);
			}
		}
	}
	return 0;
}

static int parse_cmd_bypass(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, pkt_size, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if ((prox_cfg.flags & DSF_ENABLE_BYPASS) == 0) {
		plog_err("enable bypass not set => command not supported\n");
		return -1;
	}

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			if (bypass_task(lcore_id, task_id) != 0)
				return -1;
		}
	}
	return 0;
}

static int parse_cmd_reconnect(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, pkt_size, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			if (reconnect_task(lcore_id, task_id) != 0)
				return -1;
		}
	}
	return 0;
}

static int parse_cmd_pkt_size(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, pkt_size, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (sscanf(str, "%d", &pkt_size) != 1)
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			if ((!task_is_mode_and_submode(lcore_id, task_id, "gen", "")) && (!task_is_mode_and_submode(lcore_id, task_id, "gen", "l3"))) {
				plog_err("Core %u task %u is not generating packets\n", lcore_id, task_id);
			} else {
				struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];
				task_gen_set_pkt_size(tbase, pkt_size); /* error printed within function */
			}
		}
	}
	return 0;
}

static int parse_cmd_speed(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], task_id, lcore_id, nb_cores;
	float speed;
	unsigned i;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (sscanf(str, "%f", &speed) != 1) {
		return -1;
	}

	if (!cores_task_are_valid(lcores, task_id, nb_cores)) {
		return 0;
	}

	for (i = 0; i < nb_cores; i++) {
		lcore_id = lcores[i];
		if ((!task_is_mode_and_submode(lcore_id, task_id, "gen", "")) && (!task_is_mode_and_submode(lcore_id, task_id, "gen", "l3"))) {
			plog_err("Core %u task %u is not generating packets\n", lcore_id, task_id);
		}
		else if (speed > 1000.0f || speed < 0.0f) {	// Up to 100 Gbps
			plog_err("Speed out of range (must be betweeen 0%% and 1000%%)\n");
		}
		else {
			struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];
			uint64_t bps = speed * 12500000;

			plog_info("Setting rate to %"PRIu64" Bps\n", bps);

			task_gen_set_rate(tbase, bps);
		}
	}
	return 0;
}

static int parse_cmd_speed_byte(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;
	uint64_t bps;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (sscanf(str, "%"PRIu64"", &bps) != 1)
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];

			if ((!task_is_mode_and_submode(lcore_id, task_id, "gen", "")) && (!task_is_mode_and_submode(lcore_id, task_id, "gen", "l3"))) {
				plog_err("Core %u task %u is not generating packets\n", lcore_id, task_id);
			}
			else if (bps > 12500000000) {	// Up to 100Gbps
				plog_err("Speed out of range (must be <= 12500000000)\n");
			}
			else {
				struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];

				plog_info("Setting rate to %"PRIu64" Bps\n", bps);
				task_gen_set_rate(tbase, bps);
			}
		}
	}
	return 0;
}

static int parse_cmd_reset_randoms_all(const char *str, struct input *input)
{
	if (strcmp(str, "") != 0) {
		return -1;
	}

	unsigned task_id, lcore_id = -1;
	while (prox_core_next(&lcore_id, 0) == 0) {
		for (task_id = 0; task_id < lcore_cfg[lcore_id].n_tasks_all; task_id++) {
			if ((task_is_mode_and_submode(lcore_id, task_id, "gen", "")) || (task_is_mode_and_submode(lcore_id, task_id, "gen", "l3"))) {
				struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];
				uint32_t n_rands = task_gen_get_n_randoms(tbase);

				plog_info("Resetting randoms on core %d task %d from %d randoms\n", lcore_id, task_id, n_rands);
				task_gen_reset_randoms(tbase);
			}
		}
	}
	return 0;
}

static int parse_cmd_reset_values_all(const char *str, struct input *input)
{
	if (strcmp(str, "") != 0) {
		return -1;
	}

	unsigned task_id, lcore_id = -1;
	while (prox_core_next(&lcore_id, 0) == 0) {
		for (task_id = 0; task_id < lcore_cfg[lcore_id].n_tasks_all; task_id++) {
			if ((task_is_mode_and_submode(lcore_id, task_id, "gen", "")) || (task_is_mode_and_submode(lcore_id, task_id, "gen", "l3"))) {
				struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];

				plog_info("Resetting values on core %d task %d\n", lcore_id, task_id);
				task_gen_reset_values(tbase);
			}
		}
	}
	return 0;
}

static int parse_cmd_reset_values(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			if ((!task_is_mode_and_submode(lcore_id, task_id, "gen", "")) && (!task_is_mode_and_submode(lcore_id, task_id, "gen", "l3"))) {
				plog_err("Core %u task %u is not generating packets\n", lcore_id, task_id);
			}
			else {
				struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];

				plog_info("Resetting values on core %d task %d\n", lcore_id, task_id);
				task_gen_reset_values(tbase);
			}
		}
	}
	return 0;
}

static int parse_cmd_set_value(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, value, nb_cores;
	unsigned short offset;
	uint8_t value_len;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (sscanf(str, "%hu %u %hhu", &offset, &value, &value_len) != 3) {
		return -1;
	}

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			if ((!task_is_mode_and_submode(lcore_id, task_id, "gen", "")) && (!task_is_mode_and_submode(lcore_id, task_id, "gen", "l3"))) {
				plog_err("Core %u task %u is not generating packets\n", lcore_id, task_id);
			}
			else if (offset > ETHER_MAX_LEN) {
				plog_err("Offset out of range (must be less then %u)\n", ETHER_MAX_LEN);
			}
			else if (value_len > 4) {
				plog_err("Length out of range (must be less then 4)\n");
			}
			else {
				struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];

				if (task_gen_set_value(tbase, value, offset, value_len))
					plog_info("Unable to set Byte %"PRIu16" to %"PRIu8" - too many value set\n", offset, value);
				else
					plog_info("Setting Byte %"PRIu16" to %"PRIu32"\n", offset, value);
			}
		}
	}
	return 0;
}

static int parse_cmd_set_random(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;
	unsigned short offset;
	uint8_t value_len;
	char rand_str[64];
	int16_t rand_id = -1;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (sscanf(str, "%hu %32s %hhu", &offset, rand_str, &value_len) != 3) {
		return -1;
	}

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			if ((!task_is_mode_and_submode(lcore_id, task_id, "gen", "")) && (!task_is_mode_and_submode(lcore_id, task_id, "gen", "l3"))) {
				plog_err("Core %u task %u is not generating packets\n", lcore_id, task_id);
			}
			else if (offset > ETHER_MAX_LEN) {
				plog_err("Offset out of range (must be less then %u)\n", ETHER_MAX_LEN);
			}
			else if (value_len > 4) {
				plog_err("Length out of range (must be less then 4)\n");
			} else {
				struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];

				if (task_gen_add_rand(tbase, rand_str, offset, rand_id)) {
					plog_warn("Random not added on core %u task %u\n", lcore_id, task_id);
				}
			}
		}
	}
	return 0;
}

static int parse_cmd_thread_info(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	for (unsigned int i = 0; i < nb_cores; i++) {
		cmd_thread_info(lcores[i], task_id);
	}
	return 0;
}

static int parse_cmd_verbose(const char *str, struct input *input)
{
	unsigned id;

	if (sscanf(str, "%u", &id) != 1) {
		return -1;
	}

	if (plog_set_lvl(id) != 0) {
		plog_err("Cannot set log level to %u\n", id);
	}
	return 0;
}

static int parse_cmd_arp_add(const char *str, struct input *input)
{
	struct arp_msg amsg;
	struct arp_msg *pmsg = &amsg;
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;
	struct rte_ring *ring;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (strcmp(str, ""))
		return -1;
	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		if (str_to_arp_msg(&amsg, str) == 0) {
			for (unsigned int i = 0; i < nb_cores; i++) {
				lcore_id = lcores[i];
				ring = ctrl_rings[lcore_id*MAX_TASKS_PER_CORE + task_id];
				if (!ring) {
					plog_err("No ring for control messages to core %u task %u\n", lcore_id, task_id);
				}
				else {
#if RTE_VERSION < RTE_VERSION_NUM(17,5,0,1)
					while (rte_ring_sp_enqueue_bulk(ring, (void *const *)&pmsg, 1));
#else
					while (rte_ring_sp_enqueue_bulk(ring, (void *const *)&pmsg, 1, NULL) == 0);
#endif
					while (!rte_ring_empty(ring));
				}
			}
			return 0;
		}
	}
	return -1;
}

static int parse_cmd_rule_add(const char *str, struct input *input)
{
	struct rte_ring *ring;
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (strcmp(str, ""))
		return -1;
	char *fields[9];
	char str_cpy[255];
	strncpy(str_cpy, str, 255);
	// example add rule command: rule add 15 0 1&0x0fff 1&0x0fff 0&0 128.0.0.0/1 128.0.0.0/1 5000-5000 5000-5000 allow
	int ret = rte_strsplit(str_cpy, 255, fields, 9, ' ');
	if (ret != 8) {
		return -1;
	}

	struct acl4_rule rule;
	struct acl4_rule *prule = &rule;
	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		if (str_to_rule(&rule, fields, -1, 1) == 0) {
			for (unsigned int i = 0; i < nb_cores; i++) {
				lcore_id = lcores[i];
				ring = ctrl_rings[lcore_id*MAX_TASKS_PER_CORE + task_id];
				if (!ring) {
					plog_err("No ring for control messages to core %u task %u\n", lcore_id, task_id);
				}
				else {
#if RTE_VERSION < RTE_VERSION_NUM(17,5,0,1)
					while (rte_ring_sp_enqueue_bulk(ring, (void *const *)&prule, 1));
#else
					while (rte_ring_sp_enqueue_bulk(ring, (void *const *)&prule, 1, NULL) == 0);
#endif
					while (!rte_ring_empty(ring));
				}
			}
			return 0;
		}
	}
	return -1;
}

static int parse_cmd_gateway_ip(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, ip[4], nb_cores, i;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (!strcmp(str, ""))
		return -1;
	if (sscanf(str, "%u.%u.%u.%u", ip, ip + 1, ip + 2, ip + 3) != 4) {
		return -1;
	}
	for (i = 0; i < nb_cores; i++) {
		lcore_id = lcores[i];

		if (!task_is_sub_mode(lcore_id, task_id, "l3")) {
			plog_err("Core %u task %u is not in l3 mode\n", lcore_id, task_id);
		}
		else {
			uint32_t gateway_ip = ((ip[3] & 0xFF) << 24) | ((ip[2] & 0xFF) << 16) | ((ip[1] & 0xFF) << 8) | ((ip[0] & 0xFF) << 0);
			struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];
			plog_info("Setting gateway ip to %s\n", str);
			task_set_gateway_ip(tbase, gateway_ip);
		}
	}
	return 0;
}

static int parse_cmd_local_ip(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, ip[4], nb_cores, i;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (!strcmp(str, ""))
		return -1;
	if (sscanf(str, "%u.%u.%u.%u", ip, ip + 1, ip + 2, ip + 3) != 4) {
		return -1;
	}
	for (i = 0; i < nb_cores; i++) {
		lcore_id = lcores[i];
		struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];
		uint32_t local_ip = ((ip[3] & 0xFF) << 24) | ((ip[2] & 0xFF) << 16) | ((ip[1] & 0xFF) << 8) | ((ip[0] & 0xFF) << 0);
		if (!task_is_mode_and_submode(lcore_id, task_id, "arp", "local")) {
			if (!task_is_sub_mode(lcore_id, task_id, "l3")) {
				plog_err("Core %u task %u is not in l3 mode\n", lcore_id, task_id);
			} else {
				plog_info("Setting local ip to %s\n", str);
				task_set_local_ip(tbase, local_ip);
			}
		} else {
			plog_info("Setting local ip to %s\n", str);
			task_arp_set_local_ip(tbase, local_ip);
		}
	}
	return 0;
}

static int parse_cmd_route_add(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, prefix, next_hop_idx, ip[4], nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (strcmp(str, ""))
		return -1;
	if (sscanf(str, "%u.%u.%u.%u/%u %u", ip, ip + 1, ip + 2, ip + 3,
		   &prefix, &next_hop_idx) != 8) {
		return -1;
	}
	struct rte_ring *ring;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			ring = ctrl_rings[lcore_id*MAX_TASKS_PER_CORE + task_id];
			if (!ring) {
				plog_err("No ring for control messages to core %u task %u\n", lcore_id, task_id);
			}
			else {
				struct route_msg rmsg;
				struct route_msg *pmsg = &rmsg;

				rmsg.ip_bytes[0] = ip[0];
				rmsg.ip_bytes[1] = ip[1];
				rmsg.ip_bytes[2] = ip[2];
				rmsg.ip_bytes[3] = ip[3];
				rmsg.prefix = prefix;
				rmsg.nh = next_hop_idx;
#if RTE_VERSION < RTE_VERSION_NUM(17,5,0,1)
				while (rte_ring_sp_enqueue_bulk(ring, (void *const *)&pmsg, 1));
#else
				while (rte_ring_sp_enqueue_bulk(ring, (void *const *)&pmsg, 1, NULL) == 0);
#endif
				while (!rte_ring_empty(ring));
			}
		}
	}
	return 0;
}

static int parse_cmd_start(const char *str, struct input *input)
{
	int task_id = -1;

	if (strncmp(str, "all", 3) == 0) {
		str += 3;
		sscanf(str, "%d", &task_id);

		start_core_all(task_id);
		req_refresh();
		return 0;
	}

	uint32_t cores[64] = {0};
	int ret;
	ret = parse_list_set(cores, str, 64);
	if (ret < 0) {
		return -1;
	}
	str = strchr(str, ' ');

	if (str) {
		sscanf(str, "%d", &task_id);
	}
	start_cores(cores, ret, task_id);
	req_refresh();
	return 0;
}

static int parse_cmd_stop(const char *str, struct input *input)
{
	int task_id = -1;

	if (strncmp(str, "all", 3) == 0) {
		str += 3;
		sscanf(str, "%d", &task_id);
		stop_core_all(task_id);
		req_refresh();
		return 0;
	}

	uint32_t cores[64] = {0};
	int ret;
	ret = parse_list_set(cores, str, 64);
	if (ret < 0) {
		return -1;
	}
	str = strchr(str, ' ');

	if (str) {
		sscanf(str, "%d", &task_id);
	}
	stop_cores(cores, ret, task_id);
	req_refresh();

	return 0;
}

static int parse_cmd_rx_distr_start(const char *str, struct input *input)
{
	unsigned lcore_id[RTE_MAX_LCORE];

	int nb_cores;

	nb_cores = parse_list_set(lcore_id, str, sizeof(lcore_id)/sizeof(lcore_id[0]));

	if (nb_cores <= 0) {
		return -1;
	}

	for (int i = 0; i < nb_cores; ++i)
		cmd_rx_distr_start(lcore_id[i]);
	return 0;
}

static int parse_cmd_tx_distr_start(const char *str, struct input *input)
{
	unsigned lcore_id[RTE_MAX_LCORE];

	int nb_cores;

	nb_cores = parse_list_set(lcore_id, str, sizeof(lcore_id)/sizeof(lcore_id[0]));

	if (nb_cores <= 0) {
		return -1;
	}

	for (int i = 0; i < nb_cores; ++i)
		cmd_tx_distr_start(lcore_id[i]);
	return 0;
}

static int parse_cmd_rx_distr_stop(const char *str, struct input *input)
{
	unsigned lcore_id[RTE_MAX_LCORE];

	int nb_cores;

	nb_cores = parse_list_set(lcore_id, str, sizeof(lcore_id)/sizeof(lcore_id[0]));

	if (nb_cores <= 0) {
		return -1;
	}

	for (int i = 0; i < nb_cores; ++i)
		cmd_rx_distr_stop(lcore_id[i]);
	return 0;
}

static int parse_cmd_tx_distr_stop(const char *str, struct input *input)
{
	unsigned lcore_id[RTE_MAX_LCORE];

	int nb_cores;

	nb_cores = parse_list_set(lcore_id, str, sizeof(lcore_id)/sizeof(lcore_id[0]));

	if (nb_cores <= 0) {
		return -1;
	}

	for (int i = 0; i < nb_cores; ++i)
		cmd_tx_distr_stop(lcore_id[i]);
	return 0;
}

static int parse_cmd_rx_distr_reset(const char *str, struct input *input)
{
	unsigned lcore_id[RTE_MAX_LCORE];

	int nb_cores;

	nb_cores = parse_list_set(lcore_id, str, sizeof(lcore_id)/sizeof(lcore_id[0]));

	if (nb_cores <= 0) {
		return -1;
	}

	for (int i = 0; i < nb_cores; ++i)
		cmd_rx_distr_rst(lcore_id[i]);
	return 0;
}

static int parse_cmd_tx_distr_reset(const char *str, struct input *input)
{
	unsigned lcore_id[RTE_MAX_LCORE];

	int nb_cores;

	nb_cores = parse_list_set(lcore_id, str, sizeof(lcore_id)/sizeof(lcore_id[0]));

	if (nb_cores <= 0) {
		return -1;
	}

	for (int i = 0; i < nb_cores; ++i)
		cmd_tx_distr_rst(lcore_id[i]);
	return 0;
}

static int parse_cmd_rx_distr_show(const char *str, struct input *input)
{
	unsigned lcore_id[RTE_MAX_LCORE];

	int nb_cores;

	nb_cores = parse_list_set(lcore_id, str, sizeof(lcore_id)/sizeof(lcore_id[0]));

	if (nb_cores <= 0) {
		return -1;
	}

	for (int i = 0; i < nb_cores; ++i)
		cmd_rx_distr_show(lcore_id[i]);
	return 0;
}

static int parse_cmd_tx_distr_show(const char *str, struct input *input)
{
	unsigned lcore_id[RTE_MAX_LCORE];

	int nb_cores;

	nb_cores = parse_list_set(lcore_id, str, sizeof(lcore_id)/sizeof(lcore_id[0]));

	if (nb_cores <= 0) {
		return -1;
	}

	for (int i = 0; i < nb_cores; ++i)
		cmd_tx_distr_show(lcore_id[i]);
	return 0;
}

static int parse_cmd_tot_stats(const char *str, struct input *input)
{
	if (strcmp("", str) != 0) {
		return -1;
	}

	struct global_stats_sample *gsl = stats_get_global_stats(1);
	uint64_t tot_rx = gsl->host_rx_packets;
	uint64_t tot_tx = gsl->host_tx_packets;
	uint64_t last_tsc = gsl->tsc;

	if (input->reply) {
		char buf[128];
		snprintf(buf, sizeof(buf), "%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64"\n",
			 tot_rx, tot_tx, last_tsc, rte_get_tsc_hz());
		input->reply(input, buf, strlen(buf));
	}
	else {
		plog_info("RX: %"PRIu64", TX: %"PRIu64"\n", tot_rx, tot_tx);
	}
	return 0;
}

static int parse_cmd_update_interval(const char *str, struct input *input)
{
	unsigned val;

	if (sscanf(str, "%u", &val) != 1) {
		return -1;
	}

	if (val == 0) {
		plog_err("Minimum update interval is 1 ms\n");
	}
	else {
		plog_info("Setting update interval to %d ms\n", val);
		set_update_interval(val);
	}
	return 0;
}

static int parse_cmd_mem_info(const char *str, struct input *input)
{
	if (strcmp("", str) != 0) {
		return -1;
	}

	cmd_mem_stats();
	cmd_mem_layout();
	return 0;
}

static int parse_cmd_tot_ierrors_tot(const char *str, struct input *input)
{
	if (strcmp(str, "") != 0) {
		return -1;
	}

	struct global_stats_sample *gsl = stats_get_global_stats(1);
	uint64_t tot = gsl->nics_ierrors;
	uint64_t last_tsc = gsl->tsc;

	if (input->reply) {
		char buf[128];
		snprintf(buf, sizeof(buf),
			 "%"PRIu64",%"PRIu64",%"PRIu64"\n",
			 tot, last_tsc, rte_get_tsc_hz());
		input->reply(input, buf, strlen(buf));
	}
	else {
		plog_info("ierrors: %"PRIu64"\n", tot);
	}
	return 0;
}

static int parse_cmd_tot_imissed_tot(const char *str, struct input *input)
{
	if (strcmp(str, "") != 0) {
		return -1;
	}

	struct global_stats_sample *gsl = stats_get_global_stats(1);
	uint64_t tot = gsl->nics_imissed;
	uint64_t last_tsc = gsl->tsc;

	if (input->reply) {
		char buf[128];
		snprintf(buf, sizeof(buf),
			 "%"PRIu64",%"PRIu64",%"PRIu64"\n",
			 tot, last_tsc, rte_get_tsc_hz());
		input->reply(input, buf, strlen(buf));
	}
	else {
		plog_info("imissed: %"PRIu64"\n", tot);
	}
	return 0;
}

static int parse_cmd_reset_port(const char *str, struct input *input)
{
	uint32_t port_id;

	if (sscanf(str, "%u", &port_id ) != 1) {
                return -1;
        }

	cmd_reset_port(port_id);
	return 0;
}

static int parse_cmd_write_reg(const char *str, struct input *input)
{
	uint32_t port_id;
	uint32_t id, val;

	if (sscanf(str, "%u %x %u", &port_id, &id, &val) != 3) {
                return -1;
        }

	cmd_write_reg(port_id, id, val);
	return 0;
}

static int parse_cmd_read_reg(const char *str, struct input *input)
{
	uint32_t port_id;
	uint32_t id;

	if (sscanf(str, "%u %x", &port_id, &id) != 2) {
                return -1;
        }

	cmd_read_reg(port_id, id);
	return 0;
}

static int parse_cmd_cache_reset(const char *str, struct input *input)
{
	cmd_cache_reset();
	return 0;
}

static int parse_cmd_set_cache_class_mask(const char *str, struct input *input)
{
	uint32_t lcore_id;
	uint32_t set;
	uint32_t val;

	if (sscanf(str, "%u %u %u", &lcore_id, &set, &val) != 3) {
                return -1;
        }

	cmd_set_cache_class_mask(lcore_id, set, val);
	return 0;
}

static int parse_cmd_set_cache_class(const char *str, struct input *input)
{
	uint32_t lcore_id;
	uint32_t set;

	if (sscanf(str, "%u %u", &lcore_id, &set) != 2) {
                return -1;
        }

	cmd_set_cache_class(lcore_id, set);
	return 0;
}

static int parse_cmd_get_cache_class_mask(const char *str, struct input *input)
{
	uint32_t lcore_id;
	uint32_t set;
	uint32_t val = 0;

	if (sscanf(str, "%u %u", &lcore_id, &set) != 2) {
                return -1;
        }

	cmd_get_cache_class_mask(lcore_id, set, &val);
	if (input->reply) {
		char buf[128];
		snprintf(buf, sizeof(buf), "%d, %d, %x\n", lcore_id, set, val);
		input->reply(input, buf, strlen(buf));
	} else {
		plog_info("core=%d, set=%d, mask=%x\n", lcore_id, set, val);
	}
	return 0;
}

static int parse_cmd_get_cache_class(const char *str, struct input *input)
{
	uint32_t lcore_id;
	uint32_t set;
	uint32_t val;

	if (sscanf(str, "%u", &lcore_id) != 1) {
                return -1;
        }

	cmd_get_cache_class(lcore_id, &set);
	if (input->reply) {
		char buf[128];
		snprintf(buf, sizeof(buf), "%d, %d\n", lcore_id, set);
		input->reply(input, buf, strlen(buf));
	} else {
		plog_info("core=%d, cos=%d\n", lcore_id, set);
	}
	return 0;
}

static int parse_cmd_get_cache_mask(const char *str, struct input *input)
{
	uint32_t lcore_id;
	uint32_t set;
	uint32_t mask;

	if (sscanf(str, "%u", &lcore_id) != 1) {
                return -1;
        }

	cmd_get_cache_class(lcore_id, &set);
	cmd_get_cache_class_mask(lcore_id, set, &mask);
	if (input->reply) {
		char buf[128];
		snprintf(buf, sizeof(buf), "%d, %x\n", lcore_id, mask);
		input->reply(input, buf, strlen(buf));
	} else {
		plog_info("core=%d, mask=%x\n", lcore_id, mask);
	}
	return 0;
}

static int parse_cmd_set_vlan_offload(const char *str, struct input *input)
{
	uint32_t port_id;
	uint32_t val;

	if (sscanf(str, "%u %u", &port_id, &val) != 2) {
                return -1;
        }

	cmd_set_vlan_offload(port_id, val);
	return 0;
}

static int parse_cmd_set_vlan_filter(const char *str, struct input *input)
{
	uint32_t port_id;
	uint32_t id, val;

	if (sscanf(str, "%u %d %u", &port_id, &id, &val) != 3) {
                return -1;
        }

	cmd_set_vlan_filter(port_id, id, val);
	return 0;
}

static int parse_cmd_ring_info_all(const char *str, struct input *input)
{
	if (strcmp(str, "") != 0) {
		return -1;
	}
	cmd_ringinfo_all();
	return 0;
}

static int parse_cmd_port_up(const char *str, struct input *input)
{
	unsigned val;

	if (sscanf(str, "%u", &val) != 1) {
		return -1;
	}

	cmd_port_up(val);
	return 0;
}

static int parse_cmd_port_down(const char *str, struct input *input)
{
	unsigned val;

	if (sscanf(str, "%u", &val) != 1) {
		return -1;
	}

	cmd_port_down(val);
	return 0;
}

static int parse_cmd_port_link_state(const char *str, struct input *input)
{
	unsigned val;

	if (sscanf(str, "%u", &val) != 1) {
		return -1;
	}

	if (!port_is_active(val))
		return -1;

	int active = prox_port_cfg[val].link_up;
	const char *state = active? "up\n" : "down\n";

	if (input->reply)
		input->reply(input, state, strlen(state));
	else
		plog_info("%s", state);

	return 0;
}

static int parse_cmd_xstats(const char *str, struct input *input)
{
	unsigned val;

	if (sscanf(str, "%u", &val) != 1) {
		return -1;
	}

	cmd_xstats(val);
	return 0;
}

static int parse_cmd_stats(const char *str, struct input *input)
{
	if (strcmp(str, "") == 0)
		return -1;

	char buf[32768];
	char ret2[32768];
	char *ret = ret2;
	int list = 0;

	strncpy(buf, str, sizeof(buf) - 1);
	char *tok;
	uint64_t stat_val;

	while ((tok = strchr(str, ','))) {
		*tok = 0;
		stat_val = stats_parser_get(str);

		ret += sprintf(ret, "%s%"PRIu64"", list? "," :"", stat_val);
		list = 1;
		str = tok + 1;
	}

	stat_val = stats_parser_get(str);
	ret += sprintf(ret, "%s%"PRIu64"", list? "," :"", stat_val);

	sprintf(ret, "\n");

	if (input->reply)
		input->reply(input, ret2, strlen(ret2));
	else
		plog_info("%s", ret2);
	return 0;
}

static void replace_char(char *str, char to_replace, char by)
{
	for (size_t i = 0; str[i] != '\0'; ++i) {
		if (str[i] == to_replace)
			str[i] = by;
	}
}

static int parse_cmd_port_info(const char *str, struct input *input)
{
	int val;

	if (strcmp(str, "all") == 0) {
		val = -1;
	}
	else if (sscanf(str, "%d", &val) != 1) {
		return -1;
	}

	char port_info[2048];

	cmd_portinfo(val, port_info, sizeof(port_info));

	if (input->reply) {
		replace_char(port_info, '\n', ',');
		port_info[strlen(port_info) - 1] = '\n';
		input->reply(input, port_info, strlen(port_info));
	} else
		plog_info("%s", port_info);

	return 0;
}

static int parse_cmd_ring_info(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], task_id, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			cmd_ringinfo(lcores[i], task_id);
		}
	}
	return 0;
}

static int parse_cmd_port_stats(const char *str, struct input *input)
{
	unsigned val;

	if (sscanf(str, "%u", &val) != 1) {
		return -1;
	}

	struct get_port_stats s;
	if (stats_port(val, &s)) {
		plog_err("Invalid port %u\n", val);
		return 0;
	}
	char buf[256];
	snprintf(buf, sizeof(buf),
		 "%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64","
		 "%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64","
		 "%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64"\n",
		 s.no_mbufs_diff, s.ierrors_diff + s.imissed_diff,
		 s.rx_bytes_diff, s.tx_bytes_diff,
		 s.rx_pkts_diff, s.tx_pkts_diff,
		 s.rx_tot, s.tx_tot,
		 s.no_mbufs_tot, s.ierrors_tot + s.imissed_tot,
		 s.last_tsc, s.prev_tsc);
	plog_info("%s", buf);
	if (input->reply)
		input->reply(input, buf, strlen(buf));
	return 0;
}

static int parse_cmd_multi_port_stats(const char *str, struct input *input)
{
	uint32_t ports[PROX_MAX_PORTS];
	int nb_ports = parse_list_set(ports, str, PROX_MAX_PORTS);
	if (nb_ports <= 0) {
		return -1;
	}

	char buf[PROX_MAX_PORTS * (11+5*21) + 1], *pbuf = buf;
	int left = sizeof(buf);
	for (int i = 0; i < nb_ports; ++i) {
		struct get_port_stats s;
		if (stats_port(ports[i], &s)) {
			plog_err("Invalid port %u\n", ports[i]);
			return 0;
		}

		int len = snprintf(pbuf, left,
				"%u,"
				"%"PRIu64",%"PRIu64","
				"%"PRIu64",%"PRIu64","
				"%"PRIu64";",
				//TODO: adjust buf size above when adding fields
				ports[i],
				s.rx_tot, s.tx_tot,
				s.no_mbufs_tot, s.ierrors_tot + s.imissed_tot,
				s.last_tsc);
		if ((len < 0) || (len >= left)) {
			plog_err("Cannot print stats for port %u\n", ports[i]);
			return 0;
		}
		pbuf += len;
		left -= len;
	}
	pbuf--;
	*pbuf = '\n';

	plog_info("%s", buf);
	if (input->reply)
		input->reply(input, buf, sizeof(buf) - left);
	return 0;
}

static int parse_cmd_core_stats(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			uint64_t tot_rx = stats_core_task_tot_rx(lcore_id, task_id);
			uint64_t tot_tx = stats_core_task_tot_tx(lcore_id, task_id);
			uint64_t tot_drop = stats_core_task_tot_drop(lcore_id, task_id);
			uint64_t last_tsc = stats_core_task_last_tsc(lcore_id, task_id);

			if (input->reply) {
				char buf[128];
				snprintf(buf, sizeof(buf),
				 	"%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64"\n",
				 	tot_rx, tot_tx, tot_drop, last_tsc, rte_get_tsc_hz());
				input->reply(input, buf, strlen(buf));
			}
			else {
				plog_info("RX: %"PRIu64", TX: %"PRIu64", DROP: %"PRIu64"\n",
				  	tot_rx, tot_tx, tot_drop);
			}
		}
	}
	return 0;
}

static int parse_cmd_dp_core_stats(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], tasks[MAX_TASKS_PER_CORE], lcore_id, task_id, nb_cores, nb_tasks;

	// This function either outputs a single line, in case of syntax error on the lists of cores and/or tasks
	if (parse_cores_tasks(str, lcores, tasks, &nb_cores, &nb_tasks)) {
		if (input->reply) {
			char buf[128];
			snprintf(buf, sizeof(buf), "error: invalid syntax\n");
			input->reply(input, buf, strlen(buf));
		}
		return -1;
	}

	// or outputs (nb_cores * nb_tasks) lines, one line for each core/task pair:
	// - if the core/task pair is invalid, the output line reports an error
	// - otherwise, the output line provides the dataplane statistics for the core/task pair
	for (unsigned int i = 0; i < nb_cores; i++) {
		for (unsigned int j = 0; j < nb_tasks; j++) {
			lcore_id = lcores[i];
			task_id = tasks[j];
			if (core_task_is_valid(lcore_id, task_id) == 0) {
				if (input->reply) {
					char buf[128];
					snprintf(buf, sizeof(buf), "error: invalid core %u, task %u\n", lcore_id, task_id);
					input->reply(input, buf, strlen(buf));
				} else {
					plog_info("error: invalid core %u, task %u\n", lcore_id, task_id);
				}
				continue;
			}
			uint64_t tot_rx = stats_core_task_tot_rx(lcore_id, task_id);
			uint64_t tot_tx = stats_core_task_tot_tx(lcore_id, task_id);
			uint64_t tot_tx_fail = stats_core_task_tot_tx_fail(lcore_id, task_id);
			uint64_t tot_rx_non_dp = stats_core_task_tot_rx_non_dp(lcore_id, task_id);
			uint64_t tot_tx_non_dp = stats_core_task_tot_tx_non_dp(lcore_id, task_id);
			uint64_t tot_drop = stats_core_task_tot_drop(lcore_id, task_id);
			uint64_t last_tsc = stats_core_task_last_tsc(lcore_id, task_id);

			if (input->reply) {
				char buf[128];
				snprintf(buf, sizeof(buf),
					"%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64",%u,%u\n",
					tot_rx, tot_tx, tot_rx_non_dp, tot_tx_non_dp, tot_drop, tot_tx_fail, last_tsc, rte_get_tsc_hz(), lcore_id, task_id);
				input->reply(input, buf, strlen(buf));
			}
			else {
				plog_info("core: %u, task: %u, RX: %"PRIu64", TX: %"PRIu64", RX_NON_DP: %"PRIu64", TX_NON_DP: %"PRIu64", DROP: %"PRIu64", TX_FAIL: %"PRIu64"\n",
					lcore_id, task_id, tot_rx, tot_tx, tot_rx_non_dp, tot_tx_non_dp, tot_drop, tot_tx_fail);
			}
		}
	}
	return 0;
}

static int parse_cmd_lat_stats(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			if (!task_is_mode(lcore_id, task_id, "lat")) {
				plog_err("Core %u task %u is not measuring latency\n", lcore_id, task_id);
			}
			else {
				struct stats_latency *stats = stats_latency_find(lcore_id, task_id);
				struct stats_latency *tot = stats_latency_tot_find(lcore_id, task_id);

				uint64_t last_tsc = stats_core_task_last_tsc(lcore_id, task_id);
				uint64_t lat_min_usec = time_unit_to_usec(&stats->min.time);
				uint64_t lat_max_usec = time_unit_to_usec(&stats->max.time);
				uint64_t tot_lat_min_usec = time_unit_to_usec(&tot->min.time);
				uint64_t tot_lat_max_usec = time_unit_to_usec(&tot->max.time);
				uint64_t lat_avg_usec = time_unit_to_usec(&stats->avg.time);

				if (input->reply) {
					char buf[128];
					snprintf(buf, sizeof(buf),
					 	"%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64"\n",
						 lat_min_usec,
						 lat_max_usec,
						 lat_avg_usec,
						 tot_lat_min_usec,
						 tot_lat_max_usec,
						 last_tsc,
						 rte_get_tsc_hz());
					input->reply(input, buf, strlen(buf));
				}
				else {
					plog_info("min: %"PRIu64", max: %"PRIu64", avg: %"PRIu64", min since reset: %"PRIu64", max since reset: %"PRIu64"\n",
						  lat_min_usec,
						  lat_max_usec,
						  lat_avg_usec,
						  tot_lat_min_usec,
						  tot_lat_max_usec);
				}
			}
		}
	}
	return 0;
}

static int parse_cmd_show_irq_buckets(const char *str, struct input *input)
{
	char buf[4096] = {0};
	unsigned int i, c;
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (c = 0; c < nb_cores; c++) {
			lcore_id = lcores[c];
			get_irq_buckets_by_core_task(buf, lcore_id, task_id);
			plog_info("%s", buf);
			if (input->reply)
				input->reply(input, buf, strlen(buf));
			buf[0] = 0;
		}
	}
	return 0;
}

static int parse_cmd_irq(const char *str, struct input *input)
{
	unsigned int i, c;
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (c = 0; c < nb_cores; c++) {
			lcore_id = lcores[c];
			if (!task_is_mode(lcore_id, task_id, "irq")) {
				plog_err("Core %u task %u is not in irq mode\n", lcore_id, task_id);
			} else {
				struct task_irq *task_irq = (struct task_irq *)(lcore_cfg[lcore_id].tasks_all[task_id]);

				task_irq_show_stats(task_irq, input);
			}
		}
	}
	return 0;
}

static void task_lat_show_latency_histogram(uint8_t lcore_id, uint8_t task_id, struct input *input)
{
#ifdef LATENCY_HISTOGRAM
	uint64_t *buckets;

	stats_core_lat_histogram(lcore_id, task_id, &buckets);

	if (buckets == NULL)
		return;

	if (input->reply) {
		char buf[4096] = {0};
		for (size_t i = 0; i < 128; i++)
			sprintf(buf+strlen(buf), "Bucket [%zu]: %"PRIu64"\n", i, buckets[i]);
		input->reply(input, buf, strlen(buf));
	}
	else {
		for (size_t i = 0; i < 128; i++)
			if (buckets[i])
				plog_info("Bucket [%zu]: %"PRIu64"\n", i, buckets[i]);
	}
#else
	plog_info("LATENCY_DETAILS disabled\n");
#endif
}

static int parse_cmd_lat_packets(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];
			if (!task_is_mode(lcore_id, task_id, "lat")) {
				plog_err("Core %u task %u is not measuring latency\n", lcore_id, task_id);
			}
			else {
				task_lat_show_latency_histogram(lcore_id, task_id, input);
			}
		}
	}
	return 0;
}

static int parse_cmd_cgnat_public_hash(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];

			if (!task_is_mode(lcore_id, task_id, "cgnat")) {
				plog_err("Core %u task %u is not cgnat\n", lcore_id, task_id);
			}
			else {
				struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];
				task_cgnat_dump_public_hash((struct task_nat *)tbase);
			}
		}
	}
	return 0;
}

static int parse_cmd_cgnat_private_hash(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;
	uint32_t val;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];

			if (!task_is_mode(lcore_id, task_id, "cgnat")) {
				plog_err("Core %u task %u is not cgnat\n", lcore_id, task_id);
			}
			else {
				struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];
				task_cgnat_dump_private_hash((struct task_nat *)tbase);
			}
		}
	}
	return 0;
}

static int parse_cmd_accuracy(const char *str, struct input *input)
{
	unsigned lcores[RTE_MAX_LCORE], lcore_id, task_id, nb_cores;
	uint32_t val;

	if (parse_cores_task(str, lcores, &task_id, &nb_cores))
		return -1;
	if (!(str = strchr_skip_twice(str, ' ')))
		return -1;
	if (sscanf(str, "%"PRIu32"", &val) != 1)
		return -1;

	if (cores_task_are_valid(lcores, task_id, nb_cores)) {
		for (unsigned int i = 0; i < nb_cores; i++) {
			lcore_id = lcores[i];

			if (!task_is_mode(lcore_id, task_id, "lat")) {
				plog_err("Core %u task %u is not measuring latency\n", lcore_id, task_id);
			}
			else {
				struct task_base *tbase = lcore_cfg[lcore_id].tasks_all[task_id];

				task_lat_set_accuracy_limit((struct task_lat *)tbase, val);
			}
		}
	}
	return 0;
}

static int parse_cmd_rx_tx_info(const char *str, struct input *input)
{
	if (strcmp(str, "") != 0) {
		return -1;
	}

	cmd_rx_tx_info();
	return 0;
}

static int parse_cmd_version(const char *str, struct input *input)
{
	if (strcmp(str, "") != 0) {
		return -1;
	}

	if (input->reply) {
		uint64_t version =
			((uint64_t)VERSION_MAJOR) << 24 |
			((uint64_t)VERSION_MINOR) << 16 |
			((uint64_t)VERSION_REV) << 8;

		char buf[128];
		snprintf(buf, sizeof(buf), "%"PRIu64",%"PRIu64"\n", version, (uint64_t)RTE_VERSION);
		input->reply(input, buf, strlen(buf));
	}
	else {
		plog_info("prox version: %d.%d, DPDK version: %s\n",
			  VERSION_MAJOR, VERSION_MINOR,
			  rte_version() + sizeof(RTE_VER_PREFIX));
	}
	return 0;
}

struct cmd_str {
	const char *cmd;
	const char *args;
	const char *help;
	int (*parse)(const char *args, struct input *input);
};

static int parse_cmd_help(const char *str, struct input *input);

static struct cmd_str cmd_strings[] = {
	{"history", "", "Print command history", parse_cmd_history},
	{"echo", "", "echo parameter, useful to resolving variables", parse_cmd_echo},
	{"quit", "", "Stop all cores and quit", parse_cmd_quit},
	{"quit_force", "", "Quit without waiting on cores to stop", parse_cmd_quit_force},
	{"help", "<substr>", "Show list of commands that have <substr> as a substring. If no substring is provided, all commands are shown.", parse_cmd_help},
	{"verbose", "<level>", "Set verbosity level", parse_cmd_verbose},
	{"thread info", "<core_id> <task_id>", "", parse_cmd_thread_info},
	{"mem info", "", "Show information about system memory (number of huge pages and addresses of these huge pages)", parse_cmd_mem_info},
	{"update interval", "<value>", "Update statistics refresh rate, in msec (must be >=10). Default is 1 second", parse_cmd_update_interval},
	{"rx tx info", "", "Print connections between tasks on all cores", parse_cmd_rx_tx_info},
	{"start", "<core list>|all <task_id>", "Start core <core_id> or all cores", parse_cmd_start},
	{"stop", "<core list>|all <task_id>", "Stop core <core id> or all cores", parse_cmd_stop},

	{"dump", "<core id> <task id> <nb packets>", "Create a hex dump of <nb_packets> from <task_id> on <core_id> showing how packets have changed between RX and TX.", parse_cmd_trace},
	{"dump_rx", "<core id> <task id> <nb packets>", "Create a hex dump of <nb_packets> from <task_id> on <core_id> at RX", parse_cmd_dump_rx},
	{"dump_tx", "<core id> <task id> <nb packets>", "Create a hex dump of <nb_packets> from <task_id> on <core_id> at TX", parse_cmd_dump_tx},
	{"rx distr start", "", "Start gathering statistical distribution of received packets", parse_cmd_rx_distr_start},
	{"rx distr stop", "", "Stop gathering statistical distribution of received packets", parse_cmd_rx_distr_stop},
	{"rx distr reset", "", "Reset gathered statistical distribution of received packets", parse_cmd_rx_distr_reset},
	{"rx distr show", "", "Display gathered statistical distribution of received packets", parse_cmd_rx_distr_show},
	{"tx distr start", "", "Start gathering statistical distribution of xmitted packets", parse_cmd_tx_distr_start},
	{"tx distr stop", "", "Stop gathering statistical distribution of xmitted packets", parse_cmd_tx_distr_stop},
	{"tx distr reset", "", "Reset gathered statistical distribution of xmitted packets", parse_cmd_tx_distr_reset},
	{"tx distr show", "", "Display gathered statistical distribution of xmitted packets", parse_cmd_tx_distr_show},

	{"rate", "<port id> <queue id> <rate>", "rate does not include preamble, SFD and IFG", parse_cmd_rate},
	{"count","<core id> <task id> <count>", "Generate <count> packets", parse_cmd_count},
	{"bypass", "<core_id> <task_id>", "Bypass task", parse_cmd_bypass},
	{"reconnect", "<core_id> <task_id>", "Reconnect task", parse_cmd_reconnect},
	{"pkt_size", "<core_id> <task_id> <pkt_size>", "Set the packet size to <pkt_size>", parse_cmd_pkt_size},
	{"speed", "<core_id> <task_id> <speed percentage>", "Change the speed to <speed percentage> at which packets are being generated on core <core_id> in task <task_id>.", parse_cmd_speed},
	{"speed_byte", "<core_id> <task_id> <speed>", "Change speed to <speed>. The speed is specified in units of bytes per second.", parse_cmd_speed_byte},
	{"set value", "<core_id> <task_id> <offset> <value> <value_len>", "Set <value_len> bytes to <value> at offset <offset> in packets generated on <core_id> <task_id>", parse_cmd_set_value},
	{"set random", "<core_id> <task_id> <offset> <random_str> <value_len>", "Set <value_len> bytes to <rand_str> at offset <offset> in packets generated on <core_id> <task_id>", parse_cmd_set_random},
	{"reset values all", "", "Undo all \"set value\" commands on all cores/tasks", parse_cmd_reset_values_all},
	{"reset randoms all", "", "Undo all \"set random\" commands on all cores/tasks", parse_cmd_reset_randoms_all},
	{"reset values", "<core id> <task id>", "Undo all \"set value\" commands on specified core/task", parse_cmd_reset_values},

	{"arp add", "<core id> <task id> <port id> <gre id> <svlan> <cvlan> <ip addr> <mac addr> <user>", "Add a single ARP entry into a CPE table on <core id>/<task id>.", parse_cmd_arp_add},
	{"rule add", "<core id> <task id> svlan_id&mask cvlan_id&mask ip_proto&mask source_ip/prefix destination_ip/prefix range dport_range action", "Add a rule to the ACL table on <core id>/<task id>", parse_cmd_rule_add},
	{"route add", "<core id> <task id> <ip/prefix> <next hop id>", "Add a route to the routing table on core <core id> <task id>. Example: route add 10.0.16.0/24 9", parse_cmd_route_add},
	{"gateway ip", "<core id> <task id> <ip>", "Define/Change IP address of destination gateway on core <core id> <task id>.", parse_cmd_gateway_ip},
	{"local ip", "<core id> <task id> <ip>", "Define/Change IP address of destination gateway on core <core id> <task id>.", parse_cmd_local_ip},

	{"pps unit", "", "Change core stats pps unit", parse_cmd_pps_unit},
	{"reset stats", "", "Reset all statistics", parse_cmd_reset_stats},
	{"reset lat stats", "", "Reset all latency statistics", parse_cmd_reset_lat_stats},
	{"tot stats", "", "Print total RX and TX packets", parse_cmd_tot_stats},
	{"tot ierrors tot", "", "Print total number of ierrors since reset", parse_cmd_tot_ierrors_tot},
	{"tot imissed tot", "", "Print total number of imissed since reset", parse_cmd_tot_imissed_tot},
	{"lat stats", "<core id> <task id>", "Print min,max,avg latency as measured during last sampling interval", parse_cmd_lat_stats},
	{"irq stats", "<core id> <task id>", "Print irq related infos", parse_cmd_irq},
	{"show irq buckets", "<core id> <task id>", "Print irq buckets", parse_cmd_show_irq_buckets},
	{"lat packets", "<core id> <task id>", "Print the latency for each of the last set of packets", parse_cmd_lat_packets},
	{"accuracy limit", "<core id> <task id> <nsec>", "Only consider latency of packets that were measured with an error no more than <nsec>", parse_cmd_accuracy},
	{"core stats", "<core id> <task id>", "Print rx/tx/drop for task <task id> running on core <core id>", parse_cmd_core_stats},
	{"dp core stats", "<core id> <task id>", "Print rx/tx/non_dp_rx/non_dp_tx/drop for task <task id> running on core <core id>", parse_cmd_dp_core_stats},
	{"port_stats", "<port id>", "Print rate for no_mbufs, ierrors + imissed, rx_bytes, tx_bytes, rx_pkts, tx_pkts; totals for RX, TX, no_mbufs, ierrors + imissed for port <port id>", parse_cmd_port_stats},
	{"multi port stats", "<port list>", "Get stats for multiple ports, semi-colon separated: port id, total for rx_pkts, tx_pkts, no_mbufs, ierrors + imissed, last_tsc", parse_cmd_multi_port_stats},
	{"read reg", "", "Read register", parse_cmd_read_reg},
	{"write reg", "", "Read register", parse_cmd_write_reg},
	{"set vlan offload", "", "Set Vlan offload", parse_cmd_set_vlan_offload},
	{"set vlan filter", "", "Set Vlan filter", parse_cmd_set_vlan_filter},
	{"reset cache", "", "Reset cache", parse_cmd_cache_reset},
	{"set cache class mask", "<core id> <class> <mask>", "Set cache class mask for <core id>", parse_cmd_set_cache_class_mask},
	{"get cache class mask", "<core id> <class>", "Get cache class mask", parse_cmd_get_cache_class_mask},
	{"set cache class", "<core id> <class>", "Set cache class", parse_cmd_set_cache_class},
	{"get cache class", "<core id>", "Get cache class", parse_cmd_get_cache_class},
	{"get cache mask", "<core id>", "Get cache mask", parse_cmd_get_cache_mask},
	{"reset port", "", "Reset port", parse_cmd_reset_port},
	{"ring info all", "", "Get information about ring, such as ring size and number of elements in the ring", parse_cmd_ring_info_all},
	{"ring info", "<core id> <task id>", "Get information about ring on core <core id> in task <task id>, such as ring size and number of elements in the ring", parse_cmd_ring_info},
	{"port info", "<port id> [brief?]", "Get port related information, such as MAC address, socket, number of descriptors..., . Adding \"brief\" after command prints short version of output.", parse_cmd_port_info},
	{"port up", "<port id>", "Set the port up", parse_cmd_port_up},
	{"port down", "<port id>", "Set the port down", parse_cmd_port_down},
	{"port link state", "<port id>", "Get link state (up or down) for port", parse_cmd_port_link_state},
	{"port xstats", "<port id>", "Get extra statistics for the port", parse_cmd_xstats},
	{"stats", "<stats_path>", "Get stats as specified by <stats_path>. A comma-separated list of <stats_path> can be supplied", parse_cmd_stats},
	{"cgnat dump public hash", "<core id> <task id>", "Dump cgnat public hash table", parse_cmd_cgnat_public_hash},
	{"cgnat dump private hash", "<core id> <task id>", "Dump cgnat private hash table", parse_cmd_cgnat_private_hash},
	{"delay_us", "<core_id> <task_id> <delay_us>", "Set the delay in usec for the impair mode to <delay_us>", parse_cmd_delay_us},
	{"random delay_us", "<core_id> <task_id> <random delay_us>", "Set the delay in usec for the impair mode to <random delay_us>", parse_cmd_random_delay_us},
	{"probability", "<core_id> <task_id> <probability>", "Set the percent of forwarded packets for the impair mode", parse_cmd_set_probability},
	{"version", "", "Show version", parse_cmd_version},
	{0,0,0,0},
};

static int parse_cmd_help(const char *str, struct input *input)
{
	/* str contains the arguments, all commands that have str as a
	   substring will be shown. */
	size_t len, len2, longest_cmd = 0;
	for (size_t i = 0; i < cmd_parser_n_cmd(); ++i) {
		if (longest_cmd <strlen(cmd_strings[i].cmd))
			longest_cmd = strlen(cmd_strings[i].cmd);
	}
	/* A single call to log will be executed after the help string
	   has been built. The reason for this is to make use of the
	   built-in pager. */
	char buf[32768] = {0};

	for (size_t i = 0; i < cmd_parser_n_cmd(); ++i) {
		int is_substr = 0;
		const size_t cmd_len = strlen(cmd_strings[i].cmd);
		for (size_t j = 0; j < cmd_len; ++j) {
			is_substr = 1;
			for (size_t k = 0; k < strlen(str); ++k) {
				if (str[k] != (cmd_strings[i].cmd + j)[k]) {
					is_substr = 0;
					break;
				}
			}
			if (is_substr)
				break;
		}
		if (!is_substr)
			continue;

		snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%s", cmd_strings[i].cmd);
		len = strlen(cmd_strings[i].cmd);
		while (len < longest_cmd) {
			len++;
			snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " ");
		}

		if (strlen(cmd_strings[i].args)) {
			char tmp[256] = {0};
			strncpy(tmp, cmd_strings[i].args, 128);
			snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "Arguments: %s\n", tmp);
			len2 = len;
			if (strlen(cmd_strings[i].help)) {
				while (len2) {
					len2--;
			snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " ");
				}
			}
		}

		if (strlen(cmd_strings[i].help)) {
			int add = 0;
			const char *h = cmd_strings[i].help;
			do {
				if (add) {
					len2 = len;
					while (len2) {
						len2--;
						snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " ");
					}
				}
				char tmp[128] = {0};
				const size_t max_len = strlen(h) > 80? 80 : strlen(h);
				size_t len3 = max_len;
				if (len3 == 80) {
					while (len3 && h[len3] != ' ')
						len3--;
					if (len3 == 0)
						len3 = max_len;
				}

				strncpy(tmp, h, len3);
				h += len3;
				while (h[0] == ' ' && strlen(h))
					h++;

				snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%s\n", tmp);
				add = 1;
			} while(strlen(h));
		}
		if (strlen(cmd_strings[i].help) == 0&& strlen(cmd_strings[i].args) == 0) {
			snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "\n");
		}
	}
	plog_info("%s", buf);

	return 0;
}

const char *cmd_parser_cmd(size_t i)
{
	i = i < cmd_parser_n_cmd()? i: cmd_parser_n_cmd();
	return cmd_strings[i].cmd;
}

size_t cmd_parser_n_cmd(void)
{
	return sizeof(cmd_strings)/sizeof(cmd_strings[0]) - 1;
}

void cmd_parser_parse(const char *str, struct input *input)
{
	size_t skip;

	for (size_t i = 0; i < cmd_parser_n_cmd(); ++i) {
		skip = strlen(cmd_strings[i].cmd);
		if (strncmp(cmd_strings[i].cmd, str, skip) == 0 &&
		    (str[skip] == ' ' || str[skip] == 0)) {
			while (str[skip] == ' ')
				skip++;

			if (cmd_strings[i].parse(str + skip, input) != 0) {
				plog_warn("Invalid syntax for command '%s': %s %s\n",
					  cmd_strings[i].cmd, cmd_strings[i].args, cmd_strings[i].help);
			}
			return ;
		}
	}

	plog_err("Unknown command: '%s'\n", str);
}