/*

 * iplink_stats.c       Extended statistics commands

 *

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

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

 *              as published by the Free Software Foundation; either version

 *              2 of the License, or (at your option) any later version.

 *

 * Authors:     Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

 */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <linux/if_link.h>

#include <netinet/ether.h>

#include "utils.h"

#include "ip_common.h"

static void print_explain(FILE *f)

{

	fprintf(f, "Usage: ... xstats type TYPE [ ARGS ]\n");

}

int iplink_ifla_xstats(int argc, char **argv)

{

	struct link_util *lu = NULL;

	__u32 filt_mask;

	if (!argc) {

		fprintf(stderr, "xstats: missing argument\n");

		return -1;

	}

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

		NEXT_ARG();

		lu = get_link_kind(*argv);

		if (!lu)

			invarg("invalid type", *argv);

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

		print_explain(stdout);

		return 0;

	} else {

		invarg("unknown argument", *argv);

	}

	if (!lu) {

		print_explain(stderr);

		return -1;

	}

	if (!lu->print_ifla_xstats) {

		fprintf(stderr, "xstats: link type %s doesn't support xstats\n",

			lu->id);

		return -1;

	}

	if (lu->parse_ifla_xstats &&

	    lu->parse_ifla_xstats(lu, argc-1, argv+1))

		return -1;

	if (strstr(lu->id, "_slave"))

		filt_mask = IFLA_STATS_FILTER_BIT(IFLA_STATS_LINK_XSTATS_SLAVE);

	else

		filt_mask = IFLA_STATS_FILTER_BIT(IFLA_STATS_LINK_XSTATS);

	if (rtnl_statsdump_req_filter(&rth, AF_UNSPEC, filt_mask) < 0) {

		perror("Cannont send dump request");

		return -1;

	}

	new_json_obj(json);

	if (rtnl_dump_filter(&rth, lu->print_ifla_xstats, stdout) < 0) {

		delete_json_obj();

		fprintf(stderr, "Dump terminated\n");

		return -1;

	}

	delete_json_obj();

	return 0;

}