--- /dev/null
+/*
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+/*
+ * based on ipneigh.c
+ */
+/*
+ * Authors:
+ * Masahide NAKAMURA @USAGI
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
+#include <time.h>
+
+#include "utils.h"
+#include "ip_common.h"
+
+static struct
+{
+ int family;
+ int index;
+#define NONE_DEV (-1)
+ char name[1024];
+} 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_probs 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;
+ 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;
+
+ memset(&req, 0, sizeof(req));
+
+ req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndtmsg));
+ req.n.nlmsg_flags = NLM_F_REQUEST|flags;
+ req.n.nlmsg_type = cmd;
+
+ req.ndtm.ndtm_family = preferred_family;
+ req.ndtm.ndtm_pad1 = 0;
+ req.ndtm.ndtm_pad2 = 0;
+
+ memset(&parms_buf, 0, sizeof(parms_buf));
+
+ 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);
+
+ if (!parms_rta)
+ parms_rta = (struct rtattr *)&parms_buf;
+ 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: changable 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, 0, 0, NULL, NULL, 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;
+
+ memset(&now, 0, sizeof(now));
+
+ 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;
+}
+
+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]) {
+ char *name = RTA_DATA(tb[NDTA_NAME]);
+
+ if (strlen(filter.name) > 0 && 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 = *(__u32 *)RTA_DATA(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]) {
+ char *name = RTA_DATA(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 = *(__u32 *)RTA_DATA(tb[NDTA_THRESH1]);
+ fprintf(fp, "thresh1 %u ", thresh1);
+ }
+ if (tb[NDTA_THRESH2]) {
+ __u32 thresh2 = *(__u32 *)RTA_DATA(tb[NDTA_THRESH2]);
+ fprintf(fp, "thresh2 %u ", thresh2);
+ }
+ if (tb[NDTA_THRESH3]) {
+ __u32 thresh3 = *(__u32 *)RTA_DATA(tb[NDTA_THRESH3]);
+ fprintf(fp, "thresh3 %u ", thresh3);
+ }
+ if (tb[NDTA_GC_INTERVAL]) {
+ __u64 gc_int = *(__u64 *)RTA_DATA(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 = *(__u32 *)RTA_DATA(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 = *(__u32 *)RTA_DATA(tpb[NDTPA_REFCNT]);
+ fprintf(fp, "refcnt %u ", refcnt);
+ }
+ if (tpb[NDTPA_REACHABLE_TIME]) {
+ __u64 reachable = *(__u64 *)RTA_DATA(tpb[NDTPA_REACHABLE_TIME]);
+ fprintf(fp, "reachable %llu ", reachable);
+ }
+ if (tpb[NDTPA_BASE_REACHABLE_TIME]) {
+ __u64 breachable = *(__u64 *)RTA_DATA(tpb[NDTPA_BASE_REACHABLE_TIME]);
+ fprintf(fp, "base_reachable %llu ", breachable);
+ }
+ if (tpb[NDTPA_RETRANS_TIME]) {
+ __u64 retrans = *(__u64 *)RTA_DATA(tpb[NDTPA_RETRANS_TIME]);
+ fprintf(fp, "retrans %llu ", retrans);
+ }
+
+ fprintf(fp, "%s", _SL_);
+
+ fprintf(fp, " ");
+
+ if (tpb[NDTPA_GC_STALETIME]) {
+ __u64 gc_stale = *(__u64 *)RTA_DATA(tpb[NDTPA_GC_STALETIME]);
+ fprintf(fp, "gc_stale %llu ", gc_stale);
+ }
+ if (tpb[NDTPA_DELAY_PROBE_TIME]) {
+ __u64 delay_probe = *(__u64 *)RTA_DATA(tpb[NDTPA_DELAY_PROBE_TIME]);
+ fprintf(fp, "delay_probe %llu ", delay_probe);
+ }
+ if (tpb[NDTPA_QUEUE_LEN]) {
+ __u32 queue = *(__u32 *)RTA_DATA(tpb[NDTPA_QUEUE_LEN]);
+ fprintf(fp, "queue %u ", queue);
+ }
+
+ fprintf(fp, "%s", _SL_);
+
+ fprintf(fp, " ");
+
+ if (tpb[NDTPA_APP_PROBES]) {
+ __u32 aprobe = *(__u32 *)RTA_DATA(tpb[NDTPA_APP_PROBES]);
+ fprintf(fp, "app_probes %u ", aprobe);
+ }
+ if (tpb[NDTPA_UCAST_PROBES]) {
+ __u32 uprobe = *(__u32 *)RTA_DATA(tpb[NDTPA_UCAST_PROBES]);
+ fprintf(fp, "ucast_probes %u ", uprobe);
+ }
+ if (tpb[NDTPA_MCAST_PROBES]) {
+ __u32 mprobe = *(__u32 *)RTA_DATA(tpb[NDTPA_MCAST_PROBES]);
+ fprintf(fp, "mcast_probes %u ", mprobe);
+ }
+
+ fprintf(fp, "%s", _SL_);
+
+ fprintf(fp, " ");
+
+ if (tpb[NDTPA_ANYCAST_DELAY]) {
+ __u64 anycast_delay = *(__u64 *)RTA_DATA(tpb[NDTPA_ANYCAST_DELAY]);
+ fprintf(fp, "anycast_delay %llu ", anycast_delay);
+ }
+ if (tpb[NDTPA_PROXY_DELAY]) {
+ __u64 proxy_delay = *(__u64 *)RTA_DATA(tpb[NDTPA_PROXY_DELAY]);
+ fprintf(fp, "proxy_delay %llu ", proxy_delay);
+ }
+ if (tpb[NDTPA_PROXY_QLEN]) {
+ __u32 pqueue = *(__u32 *)RTA_DATA(tpb[NDTPA_PROXY_QLEN]);
+ fprintf(fp, "proxy_queue %u ", pqueue);
+ }
+ if (tpb[NDTPA_LOCKTIME]) {
+ __u64 locktime = *(__u64 *)RTA_DATA(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 ", ndts->ndts_allocs);
+ fprintf(fp, "destroys %llu ", ndts->ndts_destroys);
+ fprintf(fp, "hash_grows %llu ", ndts->ndts_hash_grows);
+
+ fprintf(fp, "%s", _SL_);
+ fprintf(fp, " ");
+
+ fprintf(fp, "res_failed %llu ", ndts->ndts_res_failed);
+ fprintf(fp, "lookups %llu ", ndts->ndts_lookups);
+ fprintf(fp, "hits %llu ", ndts->ndts_hits);
+
+ fprintf(fp, "%s", _SL_);
+ fprintf(fp, " ");
+
+ fprintf(fp, "rcv_probes_mcast %llu ", ndts->ndts_rcv_probes_mcast);
+ fprintf(fp, "rcv_probes_ucast %llu ", ndts->ndts_rcv_probes_ucast);
+
+ fprintf(fp, "%s", _SL_);
+ fprintf(fp, " ");
+
+ fprintf(fp, "periodic_gc_runs %llu ", ndts->ndts_periodic_gc_runs);
+ fprintf(fp, "forced_gc_runs %llu ", ndts->ndts_forced_gc_runs);
+
+ fprintf(fp, "%s", _SL_);
+ }
+
+ fprintf(fp, "\n");
+
+ fflush(fp);
+ return 0;
+}
+
+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();
+
+ strncpy(filter.name, *argv, sizeof(filter.name));
+ } 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, NULL, NULL) < 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);
+}