[mirror_iproute2.git] / ip / ipntable.c

/*
 * Copyright (C)2006 USAGI/WIDE Project
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses>.
 */
/*
 * based on ipneigh.c
 */
/*
 * Authors:
 *	Masahide NAKAMURA @USAGI
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <time.h>

#include "utils.h"
#include "ip_common.h"

static struct
{
	int family;
	int index;
#define NONE_DEV	(-1)
	const char *name;
} filter;

static void usage(void) __attribute__((noreturn));

static void usage(void)
{
	fprintf(stderr,
		"Usage: ip ntable change name NAME [ dev DEV ]\n"
		"          [ thresh1 VAL ] [ thresh2 VAL ] [ thresh3 VAL ] [ gc_int MSEC ]\n"
		"          [ PARMS ]\n"
		"Usage: ip ntable show [ dev DEV ] [ name NAME ]\n"

		"PARMS := [ base_reachable MSEC ] [ retrans MSEC ] [ gc_stale MSEC ]\n"
		"         [ delay_probe MSEC ] [ queue LEN ]\n"
		"         [ app_probes VAL ] [ ucast_probes VAL ] [ mcast_probes VAL ]\n"
		"         [ anycast_delay MSEC ] [ proxy_delay MSEC ] [ proxy_queue LEN ]\n"
		"         [ locktime MSEC ]\n"
		);

	exit(-1);
}

static int ipntable_modify(int cmd, int flags, int argc, char **argv)
{
	struct {
		struct nlmsghdr	n;
		struct ndtmsg		ndtm;
		char			buf[1024];
	} req = {
		.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndtmsg)),
		.n.nlmsg_flags = NLM_F_REQUEST | flags,
		.n.nlmsg_type = cmd,
		.ndtm.ndtm_family = preferred_family,
	};
	char *namep = NULL;
	char *threshsp = NULL;
	char *gc_intp = NULL;
	char parms_buf[1024] = {};
	struct rtattr *parms_rta = (struct rtattr *)parms_buf;
	int parms_change = 0;

	parms_rta->rta_type = NDTA_PARMS;
	parms_rta->rta_len = RTA_LENGTH(0);

	while (argc > 0) {
		if (strcmp(*argv, "name") == 0) {
			int len;

			NEXT_ARG();
			if (namep)
				duparg("NAME", *argv);

			namep = *argv;
			len = strlen(namep) + 1;
			addattr_l(&req.n, sizeof(req), NDTA_NAME, namep, len);
		} else if (strcmp(*argv, "thresh1") == 0) {
			__u32 thresh1;

			NEXT_ARG();
			threshsp = *argv;

			if (get_u32(&thresh1, *argv, 0))
				invarg("\"thresh1\" value is invalid", *argv);

			addattr32(&req.n, sizeof(req), NDTA_THRESH1, thresh1);
		} else if (strcmp(*argv, "thresh2") == 0) {
			__u32 thresh2;

			NEXT_ARG();
			threshsp = *argv;

			if (get_u32(&thresh2, *argv, 0))
				invarg("\"thresh2\" value is invalid", *argv);

			addattr32(&req.n, sizeof(req), NDTA_THRESH2, thresh2);
		} else if (strcmp(*argv, "thresh3") == 0) {
			__u32 thresh3;

			NEXT_ARG();
			threshsp = *argv;

			if (get_u32(&thresh3, *argv, 0))
				invarg("\"thresh3\" value is invalid", *argv);

			addattr32(&req.n, sizeof(req), NDTA_THRESH3, thresh3);
		} else if (strcmp(*argv, "gc_int") == 0) {
			__u64 gc_int;

			NEXT_ARG();
			gc_intp = *argv;

			if (get_u64(&gc_int, *argv, 0))
				invarg("\"gc_int\" value is invalid", *argv);

			addattr_l(&req.n, sizeof(req), NDTA_GC_INTERVAL,
				  &gc_int, sizeof(gc_int));
		} else if (strcmp(*argv, "dev") == 0) {
			__u32 ifindex;

			NEXT_ARG();
			ifindex = ll_name_to_index(*argv);
			if (ifindex == 0) {
				fprintf(stderr, "Cannot find device \"%s\"\n", *argv);
				return -1;
			}

			rta_addattr32(parms_rta, sizeof(parms_buf),
				      NDTPA_IFINDEX, ifindex);
		} else if (strcmp(*argv, "base_reachable") == 0) {
			__u64 breachable;

			NEXT_ARG();

			if (get_u64(&breachable, *argv, 0))
				invarg("\"base_reachable\" value is invalid", *argv);

			rta_addattr_l(parms_rta, sizeof(parms_buf),
				      NDTPA_BASE_REACHABLE_TIME,
				      &breachable, sizeof(breachable));
			parms_change = 1;
		} else if (strcmp(*argv, "retrans") == 0) {
			__u64 retrans;

			NEXT_ARG();

			if (get_u64(&retrans, *argv, 0))
				invarg("\"retrans\" value is invalid", *argv);

			rta_addattr_l(parms_rta, sizeof(parms_buf),
				      NDTPA_RETRANS_TIME,
				      &retrans, sizeof(retrans));
			parms_change = 1;
		} else if (strcmp(*argv, "gc_stale") == 0) {
			__u64 gc_stale;

			NEXT_ARG();

			if (get_u64(&gc_stale, *argv, 0))
				invarg("\"gc_stale\" value is invalid", *argv);

			rta_addattr_l(parms_rta, sizeof(parms_buf),
				      NDTPA_GC_STALETIME,
				      &gc_stale, sizeof(gc_stale));
			parms_change = 1;
		} else if (strcmp(*argv, "delay_probe") == 0) {
			__u64 delay_probe;

			NEXT_ARG();

			if (get_u64(&delay_probe, *argv, 0))
				invarg("\"delay_probe\" value is invalid", *argv);

			rta_addattr_l(parms_rta, sizeof(parms_buf),
				      NDTPA_DELAY_PROBE_TIME,
				      &delay_probe, sizeof(delay_probe));
			parms_change = 1;
		} else if (strcmp(*argv, "queue") == 0) {
			__u32 queue;

			NEXT_ARG();

			if (get_u32(&queue, *argv, 0))
				invarg("\"queue\" value is invalid", *argv);

			rta_addattr32(parms_rta, sizeof(parms_buf),
				      NDTPA_QUEUE_LEN, queue);
			parms_change = 1;
		} else if (strcmp(*argv, "app_probes") == 0) {
			__u32 aprobe;

			NEXT_ARG();

			if (get_u32(&aprobe, *argv, 0))
				invarg("\"app_probes\" value is invalid", *argv);

			rta_addattr32(parms_rta, sizeof(parms_buf),
				      NDTPA_APP_PROBES, aprobe);
			parms_change = 1;
		} else if (strcmp(*argv, "ucast_probes") == 0) {
			__u32 uprobe;

			NEXT_ARG();

			if (get_u32(&uprobe, *argv, 0))
				invarg("\"ucast_probes\" value is invalid", *argv);

			rta_addattr32(parms_rta, sizeof(parms_buf),
				      NDTPA_UCAST_PROBES, uprobe);
			parms_change = 1;
		} else if (strcmp(*argv, "mcast_probes") == 0) {
			__u32 mprobe;

			NEXT_ARG();

			if (get_u32(&mprobe, *argv, 0))
				invarg("\"mcast_probes\" value is invalid", *argv);

			rta_addattr32(parms_rta, sizeof(parms_buf),
				      NDTPA_MCAST_PROBES, mprobe);
			parms_change = 1;
		} else if (strcmp(*argv, "anycast_delay") == 0) {
			__u64 anycast_delay;

			NEXT_ARG();

			if (get_u64(&anycast_delay, *argv, 0))
				invarg("\"anycast_delay\" value is invalid", *argv);

			rta_addattr_l(parms_rta, sizeof(parms_buf),
				      NDTPA_ANYCAST_DELAY,
				      &anycast_delay, sizeof(anycast_delay));
			parms_change = 1;
		} else if (strcmp(*argv, "proxy_delay") == 0) {
			__u64 proxy_delay;

			NEXT_ARG();

			if (get_u64(&proxy_delay, *argv, 0))
				invarg("\"proxy_delay\" value is invalid", *argv);

			rta_addattr_l(parms_rta, sizeof(parms_buf),
				      NDTPA_PROXY_DELAY,
				      &proxy_delay, sizeof(proxy_delay));
			parms_change = 1;
		} else if (strcmp(*argv, "proxy_queue") == 0) {
			__u32 pqueue;

			NEXT_ARG();

			if (get_u32(&pqueue, *argv, 0))
				invarg("\"proxy_queue\" value is invalid", *argv);

			rta_addattr32(parms_rta, sizeof(parms_buf),
				      NDTPA_PROXY_QLEN, pqueue);
			parms_change = 1;
		} else if (strcmp(*argv, "locktime") == 0) {
			__u64 locktime;

			NEXT_ARG();

			if (get_u64(&locktime, *argv, 0))
				invarg("\"locktime\" value is invalid", *argv);

			rta_addattr_l(parms_rta, sizeof(parms_buf),
				      NDTPA_LOCKTIME,
				      &locktime, sizeof(locktime));
			parms_change = 1;
		} else {
			invarg("unknown", *argv);
		}

		argc--; argv++;
	}

	if (!namep)
		missarg("NAME");
	if (!threshsp && !gc_intp && !parms_change) {
		fprintf(stderr, "Not enough information: changeable attributes required.\n");
		exit(-1);
	}

	if (parms_rta->rta_len > RTA_LENGTH(0)) {
		addattr_l(&req.n, sizeof(req), NDTA_PARMS, RTA_DATA(parms_rta),
			  RTA_PAYLOAD(parms_rta));
	}

	if (rtnl_talk(&rth, &req.n, NULL) < 0)
		exit(2);

	return 0;
}

static const char *ntable_strtime_delta(__u32 msec)
{
	static char str[32];
	struct timeval now = {};
	time_t t;
	struct tm *tp;

	if (msec == 0)
		goto error;

	if (gettimeofday(&now, NULL) < 0) {
		perror("gettimeofday");
		goto error;
	}

	t = now.tv_sec - (msec / 1000);
	tp = localtime(&t);
	if (!tp)
		goto error;

	strftime(str, sizeof(str), "%Y-%m-%d %T", tp);

	return str;
 error:
	strcpy(str, "(error)");
	return str;
}

static int print_ntable(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
{
	FILE *fp = (FILE *)arg;
	struct ndtmsg *ndtm = NLMSG_DATA(n);
	int len = n->nlmsg_len;
	struct rtattr *tb[NDTA_MAX+1];
	struct rtattr *tpb[NDTPA_MAX+1];
	int ret;

	if (n->nlmsg_type != RTM_NEWNEIGHTBL) {
		fprintf(stderr, "Not NEIGHTBL: %08x %08x %08x\n",
			n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
		return 0;
	}
	len -= NLMSG_LENGTH(sizeof(*ndtm));
	if (len < 0) {
		fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
		return -1;
	}

	if (preferred_family && preferred_family != ndtm->ndtm_family)
		return 0;

	parse_rtattr(tb, NDTA_MAX, NDTA_RTA(ndtm),
		     n->nlmsg_len - NLMSG_LENGTH(sizeof(*ndtm)));

	if (tb[NDTA_NAME]) {
		const char *name = rta_getattr_str(tb[NDTA_NAME]);

		if (filter.name && strcmp(filter.name, name))
			return 0;
	}
	if (tb[NDTA_PARMS]) {
		parse_rtattr(tpb, NDTPA_MAX, RTA_DATA(tb[NDTA_PARMS]),
			     RTA_PAYLOAD(tb[NDTA_PARMS]));

		if (tpb[NDTPA_IFINDEX]) {
			__u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);

			if (filter.index && filter.index != ifindex)
				return 0;
		} else {
			if (filter.index && filter.index != NONE_DEV)
				return 0;
		}
	}

	if (ndtm->ndtm_family == AF_INET)
		fprintf(fp, "inet ");
	else if (ndtm->ndtm_family == AF_INET6)
		fprintf(fp, "inet6 ");
	else if (ndtm->ndtm_family == AF_DECnet)
		fprintf(fp, "dnet ");
	else
		fprintf(fp, "(%d) ", ndtm->ndtm_family);

	if (tb[NDTA_NAME]) {
		const char *name = rta_getattr_str(tb[NDTA_NAME]);

		fprintf(fp, "%s ", name);
	}

	fprintf(fp, "%s", _SL_);

	ret = (tb[NDTA_THRESH1] || tb[NDTA_THRESH2] || tb[NDTA_THRESH3] ||
	       tb[NDTA_GC_INTERVAL]);
	if (ret)
		fprintf(fp, "    ");

	if (tb[NDTA_THRESH1]) {
		__u32 thresh1 = rta_getattr_u32(tb[NDTA_THRESH1]);

		fprintf(fp, "thresh1 %u ", thresh1);
	}
	if (tb[NDTA_THRESH2]) {
		__u32 thresh2 = rta_getattr_u32(tb[NDTA_THRESH2]);

		fprintf(fp, "thresh2 %u ", thresh2);
	}
	if (tb[NDTA_THRESH3]) {
		__u32 thresh3 = rta_getattr_u32(tb[NDTA_THRESH3]);

		fprintf(fp, "thresh3 %u ", thresh3);
	}
	if (tb[NDTA_GC_INTERVAL]) {
		unsigned long long gc_int = rta_getattr_u64(tb[NDTA_GC_INTERVAL]);

		fprintf(fp, "gc_int %llu ", gc_int);
	}

	if (ret)
		fprintf(fp, "%s", _SL_);

	if (tb[NDTA_CONFIG] && show_stats) {
		struct ndt_config *ndtc = RTA_DATA(tb[NDTA_CONFIG]);

		fprintf(fp, "    ");
		fprintf(fp, "config ");

		fprintf(fp, "key_len %u ", ndtc->ndtc_key_len);
		fprintf(fp, "entry_size %u ", ndtc->ndtc_entry_size);
		fprintf(fp, "entries %u ", ndtc->ndtc_entries);

		fprintf(fp, "%s", _SL_);
		fprintf(fp, "        ");

		fprintf(fp, "last_flush %s ",
			ntable_strtime_delta(ndtc->ndtc_last_flush));
		fprintf(fp, "last_rand %s ",
			ntable_strtime_delta(ndtc->ndtc_last_rand));

		fprintf(fp, "%s", _SL_);
		fprintf(fp, "        ");

		fprintf(fp, "hash_rnd %u ", ndtc->ndtc_hash_rnd);
		fprintf(fp, "hash_mask %08x ", ndtc->ndtc_hash_mask);

		fprintf(fp, "hash_chain_gc %u ", ndtc->ndtc_hash_chain_gc);
		fprintf(fp, "proxy_qlen %u ", ndtc->ndtc_proxy_qlen);

		fprintf(fp, "%s", _SL_);
	}

	if (tb[NDTA_PARMS]) {
		if (tpb[NDTPA_IFINDEX]) {
			__u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);

			fprintf(fp, "    ");
			fprintf(fp, "dev %s ", ll_index_to_name(ifindex));
			fprintf(fp, "%s", _SL_);
		}

		fprintf(fp, "    ");

		if (tpb[NDTPA_REFCNT]) {
			__u32 refcnt = rta_getattr_u32(tpb[NDTPA_REFCNT]);

			fprintf(fp, "refcnt %u ", refcnt);
		}
		if (tpb[NDTPA_REACHABLE_TIME]) {
			unsigned long long reachable = rta_getattr_u64(tpb[NDTPA_REACHABLE_TIME]);

			fprintf(fp, "reachable %llu ", reachable);
		}
		if (tpb[NDTPA_BASE_REACHABLE_TIME]) {
			unsigned long long breachable = rta_getattr_u64(tpb[NDTPA_BASE_REACHABLE_TIME]);

			fprintf(fp, "base_reachable %llu ", breachable);
		}
		if (tpb[NDTPA_RETRANS_TIME]) {
			unsigned long long retrans = rta_getattr_u64(tpb[NDTPA_RETRANS_TIME]);

			fprintf(fp, "retrans %llu ", retrans);
		}

		fprintf(fp, "%s", _SL_);

		fprintf(fp, "    ");

		if (tpb[NDTPA_GC_STALETIME]) {
			unsigned long long gc_stale = rta_getattr_u64(tpb[NDTPA_GC_STALETIME]);

			fprintf(fp, "gc_stale %llu ", gc_stale);
		}
		if (tpb[NDTPA_DELAY_PROBE_TIME]) {
			unsigned long long delay_probe = rta_getattr_u64(tpb[NDTPA_DELAY_PROBE_TIME]);

			fprintf(fp, "delay_probe %llu ", delay_probe);
		}
		if (tpb[NDTPA_QUEUE_LEN]) {
			__u32 queue = rta_getattr_u32(tpb[NDTPA_QUEUE_LEN]);

			fprintf(fp, "queue %u ", queue);
		}

		fprintf(fp, "%s", _SL_);

		fprintf(fp, "    ");

		if (tpb[NDTPA_APP_PROBES]) {
			__u32 aprobe = rta_getattr_u32(tpb[NDTPA_APP_PROBES]);

			fprintf(fp, "app_probes %u ", aprobe);
		}
		if (tpb[NDTPA_UCAST_PROBES]) {
			__u32 uprobe = rta_getattr_u32(tpb[NDTPA_UCAST_PROBES]);

			fprintf(fp, "ucast_probes %u ", uprobe);
		}
		if (tpb[NDTPA_MCAST_PROBES]) {
			__u32 mprobe = rta_getattr_u32(tpb[NDTPA_MCAST_PROBES]);

			fprintf(fp, "mcast_probes %u ", mprobe);
		}

		fprintf(fp, "%s", _SL_);

		fprintf(fp, "    ");

		if (tpb[NDTPA_ANYCAST_DELAY]) {
			unsigned long long anycast_delay = rta_getattr_u64(tpb[NDTPA_ANYCAST_DELAY]);

			fprintf(fp, "anycast_delay %llu ", anycast_delay);
		}
		if (tpb[NDTPA_PROXY_DELAY]) {
			unsigned long long proxy_delay = rta_getattr_u64(tpb[NDTPA_PROXY_DELAY]);

			fprintf(fp, "proxy_delay %llu ", proxy_delay);
		}
		if (tpb[NDTPA_PROXY_QLEN]) {
			__u32 pqueue = rta_getattr_u32(tpb[NDTPA_PROXY_QLEN]);

			fprintf(fp, "proxy_queue %u ", pqueue);
		}
		if (tpb[NDTPA_LOCKTIME]) {
			unsigned long long locktime = rta_getattr_u64(tpb[NDTPA_LOCKTIME]);

			fprintf(fp, "locktime %llu ", locktime);
		}

		fprintf(fp, "%s", _SL_);
	}

	if (tb[NDTA_STATS] && show_stats) {
		struct ndt_stats *ndts = RTA_DATA(tb[NDTA_STATS]);

		fprintf(fp, "    ");
		fprintf(fp, "stats ");

		fprintf(fp, "allocs %llu ",
			(unsigned long long) ndts->ndts_allocs);
		fprintf(fp, "destroys %llu ",
			(unsigned long long) ndts->ndts_destroys);
		fprintf(fp, "hash_grows %llu ",
			(unsigned long long) ndts->ndts_hash_grows);

		fprintf(fp, "%s", _SL_);
		fprintf(fp, "        ");

		fprintf(fp, "res_failed %llu ",
			(unsigned long long) ndts->ndts_res_failed);
		fprintf(fp, "lookups %llu ",
			(unsigned long long) ndts->ndts_lookups);
		fprintf(fp, "hits %llu ",
			(unsigned long long) ndts->ndts_hits);

		fprintf(fp, "%s", _SL_);
		fprintf(fp, "        ");

		fprintf(fp, "rcv_probes_mcast %llu ",
			(unsigned long long) ndts->ndts_rcv_probes_mcast);
		fprintf(fp, "rcv_probes_ucast %llu ",
			(unsigned long long) ndts->ndts_rcv_probes_ucast);

		fprintf(fp, "%s", _SL_);
		fprintf(fp, "        ");

		fprintf(fp, "periodic_gc_runs %llu ",
			(unsigned long long) ndts->ndts_periodic_gc_runs);
		fprintf(fp, "forced_gc_runs %llu ",
			(unsigned long long) ndts->ndts_forced_gc_runs);

		fprintf(fp, "%s", _SL_);
	}

	fprintf(fp, "\n");

	fflush(fp);
	return 0;
}

static void ipntable_reset_filter(void)
{
	memset(&filter, 0, sizeof(filter));
}

static int ipntable_show(int argc, char **argv)
{
	ipntable_reset_filter();

	filter.family = preferred_family;

	while (argc > 0) {
		if (strcmp(*argv, "dev") == 0) {
			NEXT_ARG();

			if (strcmp("none", *argv) == 0)
				filter.index = NONE_DEV;
			else if ((filter.index = ll_name_to_index(*argv)) == 0)
				invarg("\"DEV\" is invalid", *argv);
		} else if (strcmp(*argv, "name") == 0) {
			NEXT_ARG();

			filter.name = *argv;
		} else
			invarg("unknown", *argv);

		argc--; argv++;
	}

	if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETNEIGHTBL) < 0) {
		perror("Cannot send dump request");
		exit(1);
	}

	if (rtnl_dump_filter(&rth, print_ntable, stdout) < 0) {
		fprintf(stderr, "Dump terminated\n");
		exit(1);
	}

	return 0;
}

int do_ipntable(int argc, char **argv)
{
	ll_init_map(&rth);

	if (argc > 0) {
		if (matches(*argv, "change") == 0 ||
		    matches(*argv, "chg") == 0)
			return ipntable_modify(RTM_SETNEIGHTBL,
					       NLM_F_REPLACE,
					       argc-1, argv+1);
		if (matches(*argv, "show") == 0 ||
		    matches(*argv, "lst") == 0 ||
		    matches(*argv, "list") == 0)
			return ipntable_show(argc-1, argv+1);
		if (matches(*argv, "help") == 0)
			usage();
	} else
		return ipntable_show(0, NULL);

	fprintf(stderr, "Command \"%s\" is unknown, try \"ip ntable help\".\n", *argv);
	exit(-1);
}
Commit	Line	Data
143969f2 SH	1	/*
143969f2 SH	2	* Copyright (C)2006 USAGI/WIDE Project
ae665a52	3	*
143969f2 SH	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License as published by
	6	* the Free Software Foundation; either version 2 of the License, or
	7	* (at your option) any later version.
ae665a52	8	*
143969f2 SH	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
ae665a52	13	*
143969f2	14	* You should have received a copy of the GNU General Public License
4d98ab00	15	* along with this program; if not, see <http://www.gnu.org/licenses>.
143969f2 SH	16	*/
	17	/*
	18	* based on ipneigh.c
	19	*/
	20	/*
	21	* Authors:
	22	* Masahide NAKAMURA @USAGI
	23	*/
	24
	25	#include <stdio.h>
	26	#include <stdlib.h>
	27	#include <string.h>
	28	#include <sys/time.h>
5bd9dd49	29	#include <sys/socket.h>
143969f2 SH	30	#include <time.h>
	31
	32	#include "utils.h"
	33	#include "ip_common.h"
	34
	35	static struct
	36	{
	37	int family;
56f5daac	38	int index;
143969f2	39	#define NONE_DEV (-1)
45c2ec9e	40	const char *name;
143969f2 SH	41	} filter;
	42
	43	static void usage(void) __attribute__((noreturn));
	44
	45	static void usage(void)
	46	{
	47	fprintf(stderr,
	48	"Usage: ip ntable change name NAME [ dev DEV ]\n"
	49	" [ thresh1 VAL ] [ thresh2 VAL ] [ thresh3 VAL ] [ gc_int MSEC ]\n"
	50	" [ PARMS ]\n"
	51	"Usage: ip ntable show [ dev DEV ] [ name NAME ]\n"
	52
	53	"PARMS := [ base_reachable MSEC ] [ retrans MSEC ] [ gc_stale MSEC ]\n"
	54	" [ delay_probe MSEC ] [ queue LEN ]\n"
f1fdcfe6	55	" [ app_probes VAL ] [ ucast_probes VAL ] [ mcast_probes VAL ]\n"
143969f2 SH	56	" [ anycast_delay MSEC ] [ proxy_delay MSEC ] [ proxy_queue LEN ]\n"
	57	" [ locktime MSEC ]\n"
	58	);
	59
	60	exit(-1);
	61	}
	62
	63	static int ipntable_modify(int cmd, int flags, int argc, char **argv)
	64	{
	65	struct {
4806867a	66	struct nlmsghdr n;
143969f2	67	struct ndtmsg ndtm;
56f5daac	68	char buf[1024];
d17b136f PS	69	} req = {
	70	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndtmsg)),
	71	.n.nlmsg_flags = NLM_F_REQUEST \| flags,
	72	.n.nlmsg_type = cmd,
	73	.ndtm.ndtm_family = preferred_family,
	74	};
143969f2 SH	75	char *namep = NULL;
	76	char *threshsp = NULL;
	77	char *gc_intp = NULL;
d17b136f	78	char parms_buf[1024] = {};
143969f2 SH	79	struct rtattr parms_rta = (struct rtattr )parms_buf;
	80	int parms_change = 0;
	81
143969f2 SH	82	parms_rta->rta_type = NDTA_PARMS;
	83	parms_rta->rta_len = RTA_LENGTH(0);
	84
	85	while (argc > 0) {
	86	if (strcmp(*argv, "name") == 0) {
	87	int len;
	88
	89	NEXT_ARG();
	90	if (namep)
	91	duparg("NAME", *argv);
	92
	93	namep = *argv;
	94	len = strlen(namep) + 1;
	95	addattr_l(&req.n, sizeof(req), NDTA_NAME, namep, len);
	96	} else if (strcmp(*argv, "thresh1") == 0) {
	97	__u32 thresh1;
	98
	99	NEXT_ARG();
	100	threshsp = *argv;
	101
	102	if (get_u32(&thresh1, *argv, 0))
	103	invarg("\"thresh1\" value is invalid", *argv);
	104
	105	addattr32(&req.n, sizeof(req), NDTA_THRESH1, thresh1);
	106	} else if (strcmp(*argv, "thresh2") == 0) {
	107	__u32 thresh2;
	108
	109	NEXT_ARG();
	110	threshsp = *argv;
	111
	112	if (get_u32(&thresh2, *argv, 0))
	113	invarg("\"thresh2\" value is invalid", *argv);
	114
	115	addattr32(&req.n, sizeof(req), NDTA_THRESH2, thresh2);
	116	} else if (strcmp(*argv, "thresh3") == 0) {
	117	__u32 thresh3;
	118
	119	NEXT_ARG();
	120	threshsp = *argv;
	121
	122	if (get_u32(&thresh3, *argv, 0))
	123	invarg("\"thresh3\" value is invalid", *argv);
	124
	125	addattr32(&req.n, sizeof(req), NDTA_THRESH3, thresh3);
	126	} else if (strcmp(*argv, "gc_int") == 0) {
	127	__u64 gc_int;
	128
	129	NEXT_ARG();
	130	gc_intp = *argv;
	131
	132	if (get_u64(&gc_int, *argv, 0))
	133	invarg("\"gc_int\" value is invalid", *argv);
	134
	135	addattr_l(&req.n, sizeof(req), NDTA_GC_INTERVAL,
	136	&gc_int, sizeof(gc_int));
	137	} else if (strcmp(*argv, "dev") == 0) {
	138	__u32 ifindex;
	139
	140	NEXT_ARG();
	141	ifindex = ll_name_to_index(*argv);
	142	if (ifindex == 0) {
	143	fprintf(stderr, "Cannot find device \"%s\"\n", *argv);
	144	return -1;
	145	}
146
147	rta_addattr32(parms_rta, sizeof(parms_buf),
148	NDTPA_IFINDEX, ifindex);
149	} else if (strcmp(*argv, "base_reachable") == 0) {
150	__u64 breachable;
151
152	NEXT_ARG();
153
154	if (get_u64(&breachable, *argv, 0))
155	invarg("\"base_reachable\" value is invalid", *argv);
156
157	rta_addattr_l(parms_rta, sizeof(parms_buf),
158	NDTPA_BASE_REACHABLE_TIME,
159	&breachable, sizeof(breachable));
160	parms_change = 1;
161	} else if (strcmp(*argv, "retrans") == 0) {
162	__u64 retrans;
163
164	NEXT_ARG();
165
166	if (get_u64(&retrans, *argv, 0))
167	invarg("\"retrans\" value is invalid", *argv);
168
169	rta_addattr_l(parms_rta, sizeof(parms_buf),
170	NDTPA_RETRANS_TIME,
171	&retrans, sizeof(retrans));
172	parms_change = 1;
173	} else if (strcmp(*argv, "gc_stale") == 0) {
174	__u64 gc_stale;
175
176	NEXT_ARG();
177
178	if (get_u64(&gc_stale, *argv, 0))
179	invarg("\"gc_stale\" value is invalid", *argv);
180
181	rta_addattr_l(parms_rta, sizeof(parms_buf),
182	NDTPA_GC_STALETIME,
183	&gc_stale, sizeof(gc_stale));
184	parms_change = 1;
185	} else if (strcmp(*argv, "delay_probe") == 0) {
186	__u64 delay_probe;
187
188	NEXT_ARG();
189
190	if (get_u64(&delay_probe, *argv, 0))
191	invarg("\"delay_probe\" value is invalid", *argv);
192
193	rta_addattr_l(parms_rta, sizeof(parms_buf),
194	NDTPA_DELAY_PROBE_TIME,
195	&delay_probe, sizeof(delay_probe));
196	parms_change = 1;
197	} else if (strcmp(*argv, "queue") == 0) {
198	__u32 queue;
199
200	NEXT_ARG();
201
202	if (get_u32(&queue, *argv, 0))
203	invarg("\"queue\" value is invalid", *argv);
204
143969f2 SH	205	rta_addattr32(parms_rta, sizeof(parms_buf),
	206	NDTPA_QUEUE_LEN, queue);
	207	parms_change = 1;
	208	} else if (strcmp(*argv, "app_probes") == 0) {
	209	__u32 aprobe;
	210
	211	NEXT_ARG();
	212
	213	if (get_u32(&aprobe, *argv, 0))
	214	invarg("\"app_probes\" value is invalid", *argv);
	215
	216	rta_addattr32(parms_rta, sizeof(parms_buf),
	217	NDTPA_APP_PROBES, aprobe);
	218	parms_change = 1;
	219	} else if (strcmp(*argv, "ucast_probes") == 0) {
	220	__u32 uprobe;
	221
	222	NEXT_ARG();
	223
	224	if (get_u32(&uprobe, *argv, 0))
	225	invarg("\"ucast_probes\" value is invalid", *argv);
	226
	227	rta_addattr32(parms_rta, sizeof(parms_buf),
	228	NDTPA_UCAST_PROBES, uprobe);
	229	parms_change = 1;
	230	} else if (strcmp(*argv, "mcast_probes") == 0) {
	231	__u32 mprobe;
	232
	233	NEXT_ARG();
	234
	235	if (get_u32(&mprobe, *argv, 0))
	236	invarg("\"mcast_probes\" value is invalid", *argv);
	237
	238	rta_addattr32(parms_rta, sizeof(parms_buf),
	239	NDTPA_MCAST_PROBES, mprobe);
	240	parms_change = 1;
	241	} else if (strcmp(*argv, "anycast_delay") == 0) {
	242	__u64 anycast_delay;
	243
	244	NEXT_ARG();
	245
	246	if (get_u64(&anycast_delay, *argv, 0))
	247	invarg("\"anycast_delay\" value is invalid", *argv);
	248
	249	rta_addattr_l(parms_rta, sizeof(parms_buf),
	250	NDTPA_ANYCAST_DELAY,
	251	&anycast_delay, sizeof(anycast_delay));
	252	parms_change = 1;
	253	} else if (strcmp(*argv, "proxy_delay") == 0) {
	254	__u64 proxy_delay;
	255
	256	NEXT_ARG();
	257
	258	if (get_u64(&proxy_delay, *argv, 0))
	259	invarg("\"proxy_delay\" value is invalid", *argv);
	260
	261	rta_addattr_l(parms_rta, sizeof(parms_buf),
	262	NDTPA_PROXY_DELAY,
	263	&proxy_delay, sizeof(proxy_delay));
	264	parms_change = 1;
	265	} else if (strcmp(*argv, "proxy_queue") == 0) {
	266	__u32 pqueue;
	267
	268	NEXT_ARG();
269
270	if (get_u32(&pqueue, *argv, 0))
271	invarg("\"proxy_queue\" value is invalid", *argv);
272
273	rta_addattr32(parms_rta, sizeof(parms_buf),
274	NDTPA_PROXY_QLEN, pqueue);
275	parms_change = 1;
276	} else if (strcmp(*argv, "locktime") == 0) {
277	__u64 locktime;
278
279	NEXT_ARG();
280
281	if (get_u64(&locktime, *argv, 0))
282	invarg("\"locktime\" value is invalid", *argv);
283
284	rta_addattr_l(parms_rta, sizeof(parms_buf),
285	NDTPA_LOCKTIME,
286	&locktime, sizeof(locktime));
287	parms_change = 1;
288	} else {
289	invarg("unknown", *argv);
290	}
291
292	argc--; argv++;
293	}
294
295	if (!namep)
296	missarg("NAME");
297	if (!threshsp && !gc_intp && !parms_change) {
d259f030	298	fprintf(stderr, "Not enough information: changeable attributes required.\n");
143969f2 SH	299	exit(-1);
	300	}
	301
	302	if (parms_rta->rta_len > RTA_LENGTH(0)) {
	303	addattr_l(&req.n, sizeof(req), NDTA_PARMS, RTA_DATA(parms_rta),
	304	RTA_PAYLOAD(parms_rta));
	305	}
	306
86bf43c7	307	if (rtnl_talk(&rth, &req.n, NULL) < 0)
143969f2 SH	308	exit(2);
	309
	310	return 0;
	311	}
	312
	313	static const char *ntable_strtime_delta(__u32 msec)
	314	{
	315	static char str[32];
d17b136f	316	struct timeval now = {};
143969f2 SH	317	time_t t;
	318	struct tm *tp;
	319
	320	if (msec == 0)
	321	goto error;
	322
143969f2 SH	323	if (gettimeofday(&now, NULL) < 0) {
	324	perror("gettimeofday");
	325	goto error;
	326	}
	327
	328	t = now.tv_sec - (msec / 1000);
	329	tp = localtime(&t);
	330	if (!tp)
	331	goto error;
	332
	333	strftime(str, sizeof(str), "%Y-%m-%d %T", tp);
	334
	335	return str;
	336	error:
	337	strcpy(str, "(error)");
	338	return str;
	339	}
	340
f7b49a3f	341	static int print_ntable(const struct sockaddr_nl who, struct nlmsghdr n, void *arg)
143969f2	342	{
56f5daac	343	FILE fp = (FILE )arg;
143969f2 SH	344	struct ndtmsg *ndtm = NLMSG_DATA(n);
	345	int len = n->nlmsg_len;
	346	struct rtattr *tb[NDTA_MAX+1];
	347	struct rtattr *tpb[NDTPA_MAX+1];
	348	int ret;
	349
	350	if (n->nlmsg_type != RTM_NEWNEIGHTBL) {
	351	fprintf(stderr, "Not NEIGHTBL: %08x %08x %08x\n",
	352	n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
	353	return 0;
	354	}
	355	len -= NLMSG_LENGTH(sizeof(*ndtm));
	356	if (len < 0) {
	357	fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
	358	return -1;
	359	}
	360
	361	if (preferred_family && preferred_family != ndtm->ndtm_family)
	362	return 0;
	363
	364	parse_rtattr(tb, NDTA_MAX, NDTA_RTA(ndtm),
	365	n->nlmsg_len - NLMSG_LENGTH(sizeof(*ndtm)));
	366
	367	if (tb[NDTA_NAME]) {
ff24746c	368	const char *name = rta_getattr_str(tb[NDTA_NAME]);
143969f2	369
45c2ec9e	370	if (filter.name && strcmp(filter.name, name))
143969f2 SH	371	return 0;
	372	}
	373	if (tb[NDTA_PARMS]) {
	374	parse_rtattr(tpb, NDTPA_MAX, RTA_DATA(tb[NDTA_PARMS]),
	375	RTA_PAYLOAD(tb[NDTA_PARMS]));
	376
	377	if (tpb[NDTPA_IFINDEX]) {
ff24746c	378	__u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);
143969f2 SH	379
	380	if (filter.index && filter.index != ifindex)
	381	return 0;
	382	} else {
	383	if (filter.index && filter.index != NONE_DEV)
	384	return 0;
	385	}
	386	}
	387
	388	if (ndtm->ndtm_family == AF_INET)
	389	fprintf(fp, "inet ");
	390	else if (ndtm->ndtm_family == AF_INET6)
	391	fprintf(fp, "inet6 ");
	392	else if (ndtm->ndtm_family == AF_DECnet)
	393	fprintf(fp, "dnet ");
	394	else
	395	fprintf(fp, "(%d) ", ndtm->ndtm_family);
	396
	397	if (tb[NDTA_NAME]) {
ff24746c	398	const char *name = rta_getattr_str(tb[NDTA_NAME]);
56f5daac	399
143969f2 SH	400	fprintf(fp, "%s ", name);
	401	}
	402
	403	fprintf(fp, "%s", _SL_);
	404
	405	ret = (tb[NDTA_THRESH1] \|\| tb[NDTA_THRESH2] \|\| tb[NDTA_THRESH3] \|\|
	406	tb[NDTA_GC_INTERVAL]);
	407	if (ret)
	408	fprintf(fp, " ");
	409
	410	if (tb[NDTA_THRESH1]) {
ff24746c	411	__u32 thresh1 = rta_getattr_u32(tb[NDTA_THRESH1]);
56f5daac	412
143969f2 SH	413	fprintf(fp, "thresh1 %u ", thresh1);
	414	}
	415	if (tb[NDTA_THRESH2]) {
ff24746c	416	__u32 thresh2 = rta_getattr_u32(tb[NDTA_THRESH2]);
56f5daac	417
143969f2 SH	418	fprintf(fp, "thresh2 %u ", thresh2);
	419	}
	420	if (tb[NDTA_THRESH3]) {
ff24746c	421	__u32 thresh3 = rta_getattr_u32(tb[NDTA_THRESH3]);
56f5daac	422
143969f2 SH	423	fprintf(fp, "thresh3 %u ", thresh3);
	424	}
	425	if (tb[NDTA_GC_INTERVAL]) {
a55a8fd8	426	unsigned long long gc_int = rta_getattr_u64(tb[NDTA_GC_INTERVAL]);
56f5daac	427
a55a8fd8	428	fprintf(fp, "gc_int %llu ", gc_int);
143969f2 SH	429	}
	430
	431	if (ret)
	432	fprintf(fp, "%s", _SL_);
	433
	434	if (tb[NDTA_CONFIG] && show_stats) {
	435	struct ndt_config *ndtc = RTA_DATA(tb[NDTA_CONFIG]);
	436
	437	fprintf(fp, " ");
	438	fprintf(fp, "config ");
	439
	440	fprintf(fp, "key_len %u ", ndtc->ndtc_key_len);
	441	fprintf(fp, "entry_size %u ", ndtc->ndtc_entry_size);
	442	fprintf(fp, "entries %u ", ndtc->ndtc_entries);
	443
	444	fprintf(fp, "%s", _SL_);
	445	fprintf(fp, " ");
	446
	447	fprintf(fp, "last_flush %s ",
	448	ntable_strtime_delta(ndtc->ndtc_last_flush));
	449	fprintf(fp, "last_rand %s ",
	450	ntable_strtime_delta(ndtc->ndtc_last_rand));
	451
	452	fprintf(fp, "%s", _SL_);
	453	fprintf(fp, " ");
	454
	455	fprintf(fp, "hash_rnd %u ", ndtc->ndtc_hash_rnd);
	456	fprintf(fp, "hash_mask %08x ", ndtc->ndtc_hash_mask);
	457
	458	fprintf(fp, "hash_chain_gc %u ", ndtc->ndtc_hash_chain_gc);
	459	fprintf(fp, "proxy_qlen %u ", ndtc->ndtc_proxy_qlen);
	460
	461	fprintf(fp, "%s", _SL_);
	462	}
	463
	464	if (tb[NDTA_PARMS]) {
	465	if (tpb[NDTPA_IFINDEX]) {
ff24746c	466	__u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);
143969f2 SH	467
	468	fprintf(fp, " ");
	469	fprintf(fp, "dev %s ", ll_index_to_name(ifindex));
	470	fprintf(fp, "%s", _SL_);
	471	}
	472
	473	fprintf(fp, " ");
	474
	475	if (tpb[NDTPA_REFCNT]) {
ff24746c	476	__u32 refcnt = rta_getattr_u32(tpb[NDTPA_REFCNT]);
56f5daac	477
143969f2 SH	478	fprintf(fp, "refcnt %u ", refcnt);
	479	}
	480	if (tpb[NDTPA_REACHABLE_TIME]) {
a55a8fd8	481	unsigned long long reachable = rta_getattr_u64(tpb[NDTPA_REACHABLE_TIME]);
56f5daac	482
a55a8fd8	483	fprintf(fp, "reachable %llu ", reachable);
143969f2 SH	484	}
143969f2 SH	485	if (tpb[NDTPA_BASE_REACHABLE_TIME]) {
a55a8fd8	486	unsigned long long breachable = rta_getattr_u64(tpb[NDTPA_BASE_REACHABLE_TIME]);
56f5daac	487
a55a8fd8	488	fprintf(fp, "base_reachable %llu ", breachable);
143969f2 SH	489	}
143969f2 SH	490	if (tpb[NDTPA_RETRANS_TIME]) {
a55a8fd8	491	unsigned long long retrans = rta_getattr_u64(tpb[NDTPA_RETRANS_TIME]);
56f5daac	492
a55a8fd8	493	fprintf(fp, "retrans %llu ", retrans);
143969f2 SH	494	}
	495
	496	fprintf(fp, "%s", _SL_);
	497
	498	fprintf(fp, " ");
	499
	500	if (tpb[NDTPA_GC_STALETIME]) {
a55a8fd8	501	unsigned long long gc_stale = rta_getattr_u64(tpb[NDTPA_GC_STALETIME]);
56f5daac	502
a55a8fd8	503	fprintf(fp, "gc_stale %llu ", gc_stale);
143969f2 SH	504	}
143969f2 SH	505	if (tpb[NDTPA_DELAY_PROBE_TIME]) {
a55a8fd8	506	unsigned long long delay_probe = rta_getattr_u64(tpb[NDTPA_DELAY_PROBE_TIME]);
56f5daac	507
a55a8fd8	508	fprintf(fp, "delay_probe %llu ", delay_probe);
143969f2 SH	509	}
143969f2 SH	510	if (tpb[NDTPA_QUEUE_LEN]) {
ff24746c	511	__u32 queue = rta_getattr_u32(tpb[NDTPA_QUEUE_LEN]);
56f5daac	512
143969f2 SH	513	fprintf(fp, "queue %u ", queue);
	514	}
	515
	516	fprintf(fp, "%s", _SL_);
	517
	518	fprintf(fp, " ");
	519
	520	if (tpb[NDTPA_APP_PROBES]) {
ff24746c	521	__u32 aprobe = rta_getattr_u32(tpb[NDTPA_APP_PROBES]);
56f5daac	522
143969f2 SH	523	fprintf(fp, "app_probes %u ", aprobe);
	524	}
	525	if (tpb[NDTPA_UCAST_PROBES]) {
ff24746c	526	__u32 uprobe = rta_getattr_u32(tpb[NDTPA_UCAST_PROBES]);
56f5daac	527
143969f2 SH	528	fprintf(fp, "ucast_probes %u ", uprobe);
	529	}
	530	if (tpb[NDTPA_MCAST_PROBES]) {
ff24746c	531	__u32 mprobe = rta_getattr_u32(tpb[NDTPA_MCAST_PROBES]);
56f5daac	532
143969f2 SH	533	fprintf(fp, "mcast_probes %u ", mprobe);
	534	}
	535
	536	fprintf(fp, "%s", _SL_);
	537
	538	fprintf(fp, " ");
	539
	540	if (tpb[NDTPA_ANYCAST_DELAY]) {
a55a8fd8	541	unsigned long long anycast_delay = rta_getattr_u64(tpb[NDTPA_ANYCAST_DELAY]);
56f5daac	542
a55a8fd8	543	fprintf(fp, "anycast_delay %llu ", anycast_delay);
143969f2 SH	544	}
143969f2 SH	545	if (tpb[NDTPA_PROXY_DELAY]) {
a55a8fd8	546	unsigned long long proxy_delay = rta_getattr_u64(tpb[NDTPA_PROXY_DELAY]);
56f5daac	547
a55a8fd8	548	fprintf(fp, "proxy_delay %llu ", proxy_delay);
143969f2 SH	549	}
143969f2 SH	550	if (tpb[NDTPA_PROXY_QLEN]) {
ff24746c	551	__u32 pqueue = rta_getattr_u32(tpb[NDTPA_PROXY_QLEN]);
56f5daac	552
143969f2 SH	553	fprintf(fp, "proxy_queue %u ", pqueue);
	554	}
	555	if (tpb[NDTPA_LOCKTIME]) {
a55a8fd8	556	unsigned long long locktime = rta_getattr_u64(tpb[NDTPA_LOCKTIME]);
56f5daac	557
a55a8fd8	558	fprintf(fp, "locktime %llu ", locktime);
143969f2 SH	559	}
	560
	561	fprintf(fp, "%s", _SL_);
	562	}
	563
	564	if (tb[NDTA_STATS] && show_stats) {
	565	struct ndt_stats *ndts = RTA_DATA(tb[NDTA_STATS]);
	566
	567	fprintf(fp, " ");
	568	fprintf(fp, "stats ");
	569
ae70d966 SH	570	fprintf(fp, "allocs %llu ",
	571	(unsigned long long) ndts->ndts_allocs);
	572	fprintf(fp, "destroys %llu ",
	573	(unsigned long long) ndts->ndts_destroys);
	574	fprintf(fp, "hash_grows %llu ",
	575	(unsigned long long) ndts->ndts_hash_grows);
143969f2 SH	576
	577	fprintf(fp, "%s", _SL_);
	578	fprintf(fp, " ");
	579
ae70d966 SH	580	fprintf(fp, "res_failed %llu ",
	581	(unsigned long long) ndts->ndts_res_failed);
	582	fprintf(fp, "lookups %llu ",
	583	(unsigned long long) ndts->ndts_lookups);
	584	fprintf(fp, "hits %llu ",
	585	(unsigned long long) ndts->ndts_hits);
143969f2 SH	586
	587	fprintf(fp, "%s", _SL_);
	588	fprintf(fp, " ");
	589
ae70d966 SH	590	fprintf(fp, "rcv_probes_mcast %llu ",
	591	(unsigned long long) ndts->ndts_rcv_probes_mcast);
	592	fprintf(fp, "rcv_probes_ucast %llu ",
	593	(unsigned long long) ndts->ndts_rcv_probes_ucast);
143969f2 SH	594
	595	fprintf(fp, "%s", _SL_);
	596	fprintf(fp, " ");
	597
ae70d966 SH	598	fprintf(fp, "periodic_gc_runs %llu ",
	599	(unsigned long long) ndts->ndts_periodic_gc_runs);
	600	fprintf(fp, "forced_gc_runs %llu ",
	601	(unsigned long long) ndts->ndts_forced_gc_runs);
143969f2 SH	602
	603	fprintf(fp, "%s", _SL_);
	604	}
	605
	606	fprintf(fp, "\n");
	607
	608	fflush(fp);
	609	return 0;
	610	}
	611
f7b49a3f	612	static void ipntable_reset_filter(void)
143969f2 SH	613	{
	614	memset(&filter, 0, sizeof(filter));
	615	}
	616
	617	static int ipntable_show(int argc, char **argv)
	618	{
	619	ipntable_reset_filter();
	620
	621	filter.family = preferred_family;
	622
	623	while (argc > 0) {
	624	if (strcmp(*argv, "dev") == 0) {
	625	NEXT_ARG();
	626
	627	if (strcmp("none", *argv) == 0)
	628	filter.index = NONE_DEV;
	629	else if ((filter.index = ll_name_to_index(*argv)) == 0)
	630	invarg("\"DEV\" is invalid", *argv);
	631	} else if (strcmp(*argv, "name") == 0) {
	632	NEXT_ARG();
	633
45c2ec9e	634	filter.name = *argv;
143969f2 SH	635	} else
	636	invarg("unknown", *argv);
	637
	638	argc--; argv++;
	639	}
	640
	641	if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETNEIGHTBL) < 0) {
	642	perror("Cannot send dump request");
	643	exit(1);
	644	}
	645
cd70f3f5	646	if (rtnl_dump_filter(&rth, print_ntable, stdout) < 0) {
143969f2 SH	647	fprintf(stderr, "Dump terminated\n");
	648	exit(1);
	649	}
	650
	651	return 0;
	652	}
	653
	654	int do_ipntable(int argc, char **argv)
	655	{
	656	ll_init_map(&rth);
	657
	658	if (argc > 0) {
	659	if (matches(*argv, "change") == 0 \|\|
	660	matches(*argv, "chg") == 0)
	661	return ipntable_modify(RTM_SETNEIGHTBL,
	662	NLM_F_REPLACE,
	663	argc-1, argv+1);
	664	if (matches(*argv, "show") == 0 \|\|
	665	matches(*argv, "lst") == 0 \|\|
	666	matches(*argv, "list") == 0)
	667	return ipntable_show(argc-1, argv+1);
	668	if (matches(*argv, "help") == 0)
	669	usage();
	670	} else
	671	return ipntable_show(0, NULL);
	672
	673	fprintf(stderr, "Command \"%s\" is unknown, try \"ip ntable help\".\n", *argv);
	674	exit(-1);
	675	}