/* SPDX-License-Identifier: LGPL-2.1-only */

/*

 * src/nl-class-list.c     List Traffic Classes

 *

 *	This library is free software; you can redistribute it and/or

 *	modify it under the terms of the GNU Lesser General Public

 *	License as published by the Free Software Foundation version 2.1

 *	of the License.

 *

 * Copyright (c) 2010 Thomas Graf <tgraf@suug.ch>

 */

#include <netlink/cli/utils.h>

#include <netlink/cli/tc.h>

#include <netlink/cli/class.h>

#include <netlink/cli/link.h>

#include <linux/netlink.h>

static struct nl_sock *sock;

static struct nl_dump_params params = {

	.dp_type = NL_DUMP_LINE,

};

static void print_usage(void)

{

	printf(

	"Usage: nl-class-list [OPTION]...\n"

	"\n"

	"OPTIONS\n"

	"     --details         Show details\n"

	"     --stats           Show statistics\n"

	" -h, --help            Show this help\n"

	" -v, --version         Show versioning information\n"

	"\n"

	" -d, --dev=DEV         Device the class is attached to. (default: all)\n"

	" -p, --parent=ID       Identifier of parent class.\n"

	" -i, --id=ID           Identifier.\n"

	" -k, --kind=NAME       Kind of class (e.g. pfifo_fast)\n"

	"\n"

	"EXAMPLE\n"

	"    # Display statistics of all classes on eth0\n"

	"    $ nl-class-list --stats --dev=eth0\n"

	"\n"

	);

	exit(0);

}

static void __dump_class(int ifindex, struct rtnl_class *filter)

{

	struct nl_cache *cache;

	cache = nl_cli_class_alloc_cache(sock, ifindex);

	nl_cache_dump_filter(cache, &params, OBJ_CAST(filter));

}

static void dump_class(struct nl_object *obj, void *arg)

{

	struct rtnl_link *link = nl_object_priv(obj);

	__dump_class(rtnl_link_get_ifindex(link), arg);

}

int main(int argc, char *argv[])

{

	struct rtnl_class *class;

	struct rtnl_tc *tc;

	struct nl_cache *link_cache;

	int ifindex;

	sock = nl_cli_alloc_socket();

	nl_cli_connect(sock, NETLINK_ROUTE);

	link_cache = nl_cli_link_alloc_cache(sock);

	class = nl_cli_class_alloc();

	tc = (struct rtnl_tc *) class;

	params.dp_fd = stdout;

	for (;;) {

		int c, optidx = 0;

		enum {

			ARG_DETAILS = 257,

			ARG_STATS = 258,

		};

		static struct option long_opts[] = {

			{ "details", 0, 0, ARG_DETAILS },

			{ "stats", 0, 0, ARG_STATS },

			{ "help", 0, 0, 'h' },

			{ "version", 0, 0, 'v' },

			{ "dev", 1, 0, 'd' },

			{ "parent", 1, 0, 'p' },

			{ "id", 1, 0, 'i' },

			{ "kind", 1, 0, 'k' },

			{ 0, 0, 0, 0 }

		};

		c = getopt_long(argc, argv, "hvd:p:i:k:", long_opts, &optidx);

		if (c == -1)

			break;

		switch (c) {

		case ARG_DETAILS: params.dp_type = NL_DUMP_DETAILS; break;

		case ARG_STATS: params.dp_type = NL_DUMP_STATS; break;

		case 'h': print_usage(); break;

		case 'v': nl_cli_print_version(); break;

		case 'd': nl_cli_tc_parse_dev(tc, link_cache, optarg); break;

		case 'p': nl_cli_tc_parse_parent(tc, optarg); break;

		case 'i': nl_cli_tc_parse_handle(tc, optarg, 0); break;

		case 'k': nl_cli_tc_parse_kind(tc, optarg); break;

		}

	}

	if ((ifindex = rtnl_tc_get_ifindex(tc)))

		__dump_class(ifindex, class);

	else

		nl_cache_foreach(link_cache, dump_class, class);

	return 0;

}