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

/*

 * iplink_rmnet.c	RMNET device support

 *

 * Authors:     Daniele Palmas <dnlplm@gmail.com>

 */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "utils.h"

#include "ip_common.h"

static void print_explain(FILE *f)

{

	fprintf(f,

		"Usage: ... rmnet mux_id MUXID\n"

		"\n"

		"MUXID := 1-254\n"

	);

}

static void explain(void)

{

	print_explain(stderr);

}

static int rmnet_parse_opt(struct link_util *lu, int argc, char **argv,

			   struct nlmsghdr *n)

{

	__u16 mux_id;

	while (argc > 0) {

		if (matches(*argv, "mux_id") == 0) {

			NEXT_ARG();

			if (get_u16(&mux_id, *argv, 0))

				invarg("mux_id is invalid", *argv);

			addattr16(n, 1024, IFLA_RMNET_MUX_ID, mux_id);

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

			explain();

			return -1;

		} else {

			fprintf(stderr, "rmnet: unknown command \"%s\"?\n", *argv);

			explain();

			return -1;

		}

		argc--, argv++;

	}

	return 0;

}

static void rmnet_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])

{

	if (!tb)

		return;

	if (!tb[IFLA_RMNET_MUX_ID] ||

	    RTA_PAYLOAD(tb[IFLA_RMNET_MUX_ID]) < sizeof(__u16))

		return;

	print_uint(PRINT_ANY,

		   "mux_id",

		   "mux_id %u ",

		   rta_getattr_u16(tb[IFLA_RMNET_MUX_ID]));

}

static void rmnet_print_help(struct link_util *lu, int argc, char **argv,

			     FILE *f)

{

	print_explain(f);

}

struct link_util rmnet_link_util = {

	.id		= "rmnet",

	.maxattr	= IFLA_RMNET_MAX,

	.parse_opt	= rmnet_parse_opt,

	.print_opt	= rmnet_print_opt,

	.print_help	= rmnet_print_help,

};