/* SPDX-License-Identifier: GPL-2.0 */

/*

 * q_log.c		plug scheduler

 *

 * Copyright (C) 2019	Paolo Abeni <pabeni@redhat.com>

 */

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <fcntl.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <arpa/inet.h>

#include <string.h>

#include "utils.h"

#include "tc_util.h"

static void explain(void)

{

	fprintf(stderr, "Usage: ... plug [block | release | release_indefinite | limit NUMBER]\n");

}

static int plug_parse_opt(struct qdisc_util *qu, int argc, char **argv,

			  struct nlmsghdr *n, const char *dev)

{

	struct tc_plug_qopt opt = {};

	int ok = 0;

	while (argc > 0) {

		if (strcmp(*argv, "block") == 0) {

			opt.action = TCQ_PLUG_BUFFER;

			ok++;

		} else if (strcmp(*argv, "release") == 0) {

			opt.action = TCQ_PLUG_RELEASE_ONE;

			ok++;

		} else if (strcmp(*argv, "release_indefinite") == 0) {

			opt.action = TCQ_PLUG_RELEASE_INDEFINITE;

			ok++;

		} else if (strcmp(*argv, "limit") == 0) {

			opt.action = TCQ_PLUG_LIMIT;

			NEXT_ARG();

			if (get_size(&opt.limit, *argv)) {

				fprintf(stderr, "Illegal value for \"limit\": \"%s\"\n", *argv);

				return -1;

			}

			ok++;

		} else if (strcmp(*argv, "help") == 0) {

			explain();

			return -1;

		} else {

			fprintf(stderr, "%s: unknown parameter \"%s\"\n", qu->id, *argv);

			explain();

			return -1;

		}

		argc--; argv++;

	}

	if (ok)

		addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));

	return 0;

}

static int plug_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)

{

	/* dummy implementation as sch_plug does not implement a dump op */

	return 0;

}

struct qdisc_util plug_qdisc_util = {

	.id = "plug",

	.parse_qopt = plug_parse_opt,

	.print_qopt = plug_print_opt,

};