ip/ipntable.c

   1 /*
   2  * Copyright (C)2006 USAGI/WIDE Project
   3  *
   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.
   8  *
   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.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18 /*
  19  * based on ipneigh.c
  20  */
  21 /*
  22  * Authors:
  23  *      Masahide NAKAMURA @USAGI
  24  */
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <sys/time.h>
  30 #include <time.h>
  31
  32 #include "utils.h"
  33 #include "ip_common.h"
  34
  35 static struct
  36 {
  37         int family;
  38         int index;
  39 #define NONE_DEV        (-1)
  40         char name[1024];
  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"
  55                 "         [ app_probs VAL ] [ ucast_probes VAL ] [ mcast_probes VAL ]\n"
  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 {
  66                 struct nlmsghdr         n;
  67                 struct ndtmsg           ndtm;
  68                 char                    buf[1024];
  69         } req;
  70         char *namep = NULL;
  71         char *threshsp = NULL;
  72         char *gc_intp = NULL;
  73         char parms_buf[1024];
  74         struct rtattr *parms_rta = (struct rtattr *)parms_buf;
  75         int parms_change = 0;
  76
  77         memset(&req, 0, sizeof(req));
  78
  79         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndtmsg));
  80         req.n.nlmsg_flags = NLM_F_REQUEST|flags;
  81         req.n.nlmsg_type = cmd;
  82
  83         req.ndtm.ndtm_family = preferred_family;
  84         req.ndtm.ndtm_pad1 = 0;
  85         req.ndtm.ndtm_pad2 = 0;
  86
  87         memset(&parms_buf, 0, sizeof(parms_buf));
  88
  89         parms_rta->rta_type = NDTA_PARMS;
  90         parms_rta->rta_len = RTA_LENGTH(0);
  91
  92         while (argc > 0) {
  93                 if (strcmp(*argv, "name") == 0) {
  94                         int len;
  95
  96                         NEXT_ARG();
  97                         if (namep)
  98                                 duparg("NAME", *argv);
  99
 100                         namep = *argv;
 101                         len = strlen(namep) + 1;
 102                         addattr_l(&req.n, sizeof(req), NDTA_NAME, namep, len);
 103                 } else if (strcmp(*argv, "thresh1") == 0) {
 104                         __u32 thresh1;
 105
 106                         NEXT_ARG();
 107                         threshsp = *argv;
 108
 109                         if (get_u32(&thresh1, *argv, 0))
 110                                 invarg("\"thresh1\" value is invalid", *argv);
 111
 112                         addattr32(&req.n, sizeof(req), NDTA_THRESH1, thresh1);
 113                 } else if (strcmp(*argv, "thresh2") == 0) {
 114                         __u32 thresh2;
 115
 116                         NEXT_ARG();
 117                         threshsp = *argv;
 118
 119                         if (get_u32(&thresh2, *argv, 0))
 120                                 invarg("\"thresh2\" value is invalid", *argv);
 121
 122                         addattr32(&req.n, sizeof(req), NDTA_THRESH2, thresh2);
 123                 } else if (strcmp(*argv, "thresh3") == 0) {
 124                         __u32 thresh3;
 125
 126                         NEXT_ARG();
 127                         threshsp = *argv;
 128
 129                         if (get_u32(&thresh3, *argv, 0))
 130                                 invarg("\"thresh3\" value is invalid", *argv);
 131
 132                         addattr32(&req.n, sizeof(req), NDTA_THRESH3, thresh3);
 133                 } else if (strcmp(*argv, "gc_int") == 0) {
 134                         __u64 gc_int;
 135
 136                         NEXT_ARG();
 137                         gc_intp = *argv;
 138
 139                         if (get_u64(&gc_int, *argv, 0))
 140                                 invarg("\"gc_int\" value is invalid", *argv);
 141
 142                         addattr_l(&req.n, sizeof(req), NDTA_GC_INTERVAL,
 143                                   &gc_int, sizeof(gc_int));
 144                 } else if (strcmp(*argv, "dev") == 0) {
 145                         __u32 ifindex;
 146
 147                         NEXT_ARG();
 148                         ifindex = ll_name_to_index(*argv);
 149                         if (ifindex == 0) {
 150                                 fprintf(stderr, "Cannot find device \"%s\"\n", *argv);
 151                                 return -1;
 152                         }
 153
 154                         rta_addattr32(parms_rta, sizeof(parms_buf),
 155                                       NDTPA_IFINDEX, ifindex);
 156                 } else if (strcmp(*argv, "base_reachable") == 0) {
 157                         __u64 breachable;
 158
 159                         NEXT_ARG();
 160
 161                         if (get_u64(&breachable, *argv, 0))
 162                                 invarg("\"base_reachable\" value is invalid", *argv);
 163
 164                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 165                                       NDTPA_BASE_REACHABLE_TIME,
 166                                       &breachable, sizeof(breachable));
 167                         parms_change = 1;
 168                 } else if (strcmp(*argv, "retrans") == 0) {
 169                         __u64 retrans;
 170
 171                         NEXT_ARG();
 172
 173                         if (get_u64(&retrans, *argv, 0))
 174                                 invarg("\"retrans\" value is invalid", *argv);
 175
 176                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 177                                       NDTPA_RETRANS_TIME,
 178                                       &retrans, sizeof(retrans));
 179                         parms_change = 1;
 180                 } else if (strcmp(*argv, "gc_stale") == 0) {
 181                         __u64 gc_stale;
 182
 183                         NEXT_ARG();
 184
 185                         if (get_u64(&gc_stale, *argv, 0))
 186                                 invarg("\"gc_stale\" value is invalid", *argv);
 187
 188                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 189                                       NDTPA_GC_STALETIME,
 190                                       &gc_stale, sizeof(gc_stale));
 191                         parms_change = 1;
 192                 } else if (strcmp(*argv, "delay_probe") == 0) {
 193                         __u64 delay_probe;
 194
 195                         NEXT_ARG();
 196
 197                         if (get_u64(&delay_probe, *argv, 0))
 198                                 invarg("\"delay_probe\" value is invalid", *argv);
 199
 200                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 201                                       NDTPA_DELAY_PROBE_TIME,
 202                                       &delay_probe, sizeof(delay_probe));
 203                         parms_change = 1;
 204                 } else if (strcmp(*argv, "queue") == 0) {
 205                         __u32 queue;
 206
 207                         NEXT_ARG();
 208
 209                         if (get_u32(&queue, *argv, 0))
 210                                 invarg("\"queue\" value is invalid", *argv);
 211
 212                         if (!parms_rta)
 213                                 parms_rta = (struct rtattr *)&parms_buf;
 214                         rta_addattr32(parms_rta, sizeof(parms_buf),
 215                                       NDTPA_QUEUE_LEN, queue);
 216                         parms_change = 1;
 217                 } else if (strcmp(*argv, "app_probes") == 0) {
 218                         __u32 aprobe;
 219
 220                         NEXT_ARG();
 221
 222                         if (get_u32(&aprobe, *argv, 0))
 223                                 invarg("\"app_probes\" value is invalid", *argv);
 224
 225                         rta_addattr32(parms_rta, sizeof(parms_buf),
 226                                       NDTPA_APP_PROBES, aprobe);
 227                         parms_change = 1;
 228                 } else if (strcmp(*argv, "ucast_probes") == 0) {
 229                         __u32 uprobe;
 230
 231                         NEXT_ARG();
 232
 233                         if (get_u32(&uprobe, *argv, 0))
 234                                 invarg("\"ucast_probes\" value is invalid", *argv);
 235
 236                         rta_addattr32(parms_rta, sizeof(parms_buf),
 237                                       NDTPA_UCAST_PROBES, uprobe);
 238                         parms_change = 1;
 239                 } else if (strcmp(*argv, "mcast_probes") == 0) {
 240                         __u32 mprobe;
 241
 242                         NEXT_ARG();
 243
 244                         if (get_u32(&mprobe, *argv, 0))
 245                                 invarg("\"mcast_probes\" value is invalid", *argv);
 246
 247                         rta_addattr32(parms_rta, sizeof(parms_buf),
 248                                       NDTPA_MCAST_PROBES, mprobe);
 249                         parms_change = 1;
 250                 } else if (strcmp(*argv, "anycast_delay") == 0) {
 251                         __u64 anycast_delay;
 252
 253                         NEXT_ARG();
 254
 255                         if (get_u64(&anycast_delay, *argv, 0))
 256                                 invarg("\"anycast_delay\" value is invalid", *argv);
 257
 258                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 259                                       NDTPA_ANYCAST_DELAY,
 260                                       &anycast_delay, sizeof(anycast_delay));
 261                         parms_change = 1;
 262                 } else if (strcmp(*argv, "proxy_delay") == 0) {
 263                         __u64 proxy_delay;
 264
 265                         NEXT_ARG();
 266
 267                         if (get_u64(&proxy_delay, *argv, 0))
 268                                 invarg("\"proxy_delay\" value is invalid", *argv);
 269
 270                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 271                                       NDTPA_PROXY_DELAY,
 272                                       &proxy_delay, sizeof(proxy_delay));
 273                         parms_change = 1;
 274                 } else if (strcmp(*argv, "proxy_queue") == 0) {
 275                         __u32 pqueue;
 276
 277                         NEXT_ARG();
 278
 279                         if (get_u32(&pqueue, *argv, 0))
 280                                 invarg("\"proxy_queue\" value is invalid", *argv);
 281
 282                         rta_addattr32(parms_rta, sizeof(parms_buf),
 283                                       NDTPA_PROXY_QLEN, pqueue);
 284                         parms_change = 1;
 285                 } else if (strcmp(*argv, "locktime") == 0) {
 286                         __u64 locktime;
 287
 288                         NEXT_ARG();
 289
 290                         if (get_u64(&locktime, *argv, 0))
 291                                 invarg("\"locktime\" value is invalid", *argv);
 292
 293                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 294                                       NDTPA_LOCKTIME,
 295                                       &locktime, sizeof(locktime));
 296                         parms_change = 1;
 297                 } else {
 298                         invarg("unknown", *argv);
 299                 }
 300
 301                 argc--; argv++;
 302         }
 303
 304         if (!namep)
 305                 missarg("NAME");
 306         if (!threshsp && !gc_intp && !parms_change) {
 307                 fprintf(stderr, "Not enough information: changable attributes required.\n");
 308                 exit(-1);
 309         }
 310
 311         if (parms_rta->rta_len > RTA_LENGTH(0)) {
 312                 addattr_l(&req.n, sizeof(req), NDTA_PARMS, RTA_DATA(parms_rta),
 313                           RTA_PAYLOAD(parms_rta));
 314         }
 315
 316         if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
 317                 exit(2);
 318
 319         return 0;
 320 }
 321
 322 static const char *ntable_strtime_delta(__u32 msec)
 323 {
 324         static char str[32];
 325         struct timeval now;
 326         time_t t;
 327         struct tm *tp;
 328
 329         if (msec == 0)
 330                 goto error;
 331
 332         memset(&now, 0, sizeof(now));
 333
 334         if (gettimeofday(&now, NULL) < 0) {
 335                 perror("gettimeofday");
 336                 goto error;
 337         }
 338
 339         t = now.tv_sec - (msec / 1000);
 340         tp = localtime(&t);
 341         if (!tp)
 342                 goto error;
 343
 344         strftime(str, sizeof(str), "%Y-%m-%d %T", tp);
 345
 346         return str;
 347  error:
 348         strcpy(str, "(error)");
 349         return str;
 350 }
 351
 352 int print_ntable(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
 353 {
 354         FILE *fp = (FILE*)arg;
 355         struct ndtmsg *ndtm = NLMSG_DATA(n);
 356         int len = n->nlmsg_len;
 357         struct rtattr *tb[NDTA_MAX+1];
 358         struct rtattr *tpb[NDTPA_MAX+1];
 359         int ret;
 360
 361         if (n->nlmsg_type != RTM_NEWNEIGHTBL) {
 362                 fprintf(stderr, "Not NEIGHTBL: %08x %08x %08x\n",
 363                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 364                 return 0;
 365         }
 366         len -= NLMSG_LENGTH(sizeof(*ndtm));
 367         if (len < 0) {
 368                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 369                 return -1;
 370         }
 371
 372         if (preferred_family && preferred_family != ndtm->ndtm_family)
 373                 return 0;
 374
 375         parse_rtattr(tb, NDTA_MAX, NDTA_RTA(ndtm),
 376                      n->nlmsg_len - NLMSG_LENGTH(sizeof(*ndtm)));
 377
 378         if (tb[NDTA_NAME]) {
 379                 char *name = RTA_DATA(tb[NDTA_NAME]);
 380
 381                 if (strlen(filter.name) > 0 && strcmp(filter.name, name))
 382                         return 0;
 383         }
 384         if (tb[NDTA_PARMS]) {
 385                 parse_rtattr(tpb, NDTPA_MAX, RTA_DATA(tb[NDTA_PARMS]),
 386                              RTA_PAYLOAD(tb[NDTA_PARMS]));
 387
 388                 if (tpb[NDTPA_IFINDEX]) {
 389                         __u32 ifindex = *(__u32 *)RTA_DATA(tpb[NDTPA_IFINDEX]);
 390
 391                         if (filter.index && filter.index != ifindex)
 392                                 return 0;
 393                 } else {
 394                         if (filter.index && filter.index != NONE_DEV)
 395                                 return 0;
 396                 }
 397         }
 398
 399         if (ndtm->ndtm_family == AF_INET)
 400                 fprintf(fp, "inet ");
 401         else if (ndtm->ndtm_family == AF_INET6)
 402                 fprintf(fp, "inet6 ");
 403         else if (ndtm->ndtm_family == AF_DECnet)
 404                 fprintf(fp, "dnet ");
 405         else
 406                 fprintf(fp, "(%d) ", ndtm->ndtm_family);
 407
 408         if (tb[NDTA_NAME]) {
 409                 char *name = RTA_DATA(tb[NDTA_NAME]);
 410                 fprintf(fp, "%s ", name);
 411         }
 412
 413         fprintf(fp, "%s", _SL_);
 414
 415         ret = (tb[NDTA_THRESH1] || tb[NDTA_THRESH2] || tb[NDTA_THRESH3] ||
 416                tb[NDTA_GC_INTERVAL]);
 417         if (ret)
 418                 fprintf(fp, "    ");
 419
 420         if (tb[NDTA_THRESH1]) {
 421                 __u32 thresh1 = *(__u32 *)RTA_DATA(tb[NDTA_THRESH1]);
 422                 fprintf(fp, "thresh1 %u ", thresh1);
 423         }
 424         if (tb[NDTA_THRESH2]) {
 425                 __u32 thresh2 = *(__u32 *)RTA_DATA(tb[NDTA_THRESH2]);
 426                 fprintf(fp, "thresh2 %u ", thresh2);
 427         }
 428         if (tb[NDTA_THRESH3]) {
 429                 __u32 thresh3 = *(__u32 *)RTA_DATA(tb[NDTA_THRESH3]);
 430                 fprintf(fp, "thresh3 %u ", thresh3);
 431         }
 432         if (tb[NDTA_GC_INTERVAL]) {
 433                 __u64 gc_int = *(__u64 *)RTA_DATA(tb[NDTA_GC_INTERVAL]);
 434                 fprintf(fp, "gc_int %llu ", gc_int);
 435         }
 436
 437         if (ret)
 438                 fprintf(fp, "%s", _SL_);
 439
 440         if (tb[NDTA_CONFIG] && show_stats) {
 441                 struct ndt_config *ndtc = RTA_DATA(tb[NDTA_CONFIG]);
 442
 443                 fprintf(fp, "    ");
 444                 fprintf(fp, "config ");
 445
 446                 fprintf(fp, "key_len %u ", ndtc->ndtc_key_len);
 447                 fprintf(fp, "entry_size %u ", ndtc->ndtc_entry_size);
 448                 fprintf(fp, "entries %u ", ndtc->ndtc_entries);
 449
 450                 fprintf(fp, "%s", _SL_);
 451                 fprintf(fp, "        ");
 452
 453                 fprintf(fp, "last_flush %s ",
 454                         ntable_strtime_delta(ndtc->ndtc_last_flush));
 455                 fprintf(fp, "last_rand %s ",
 456                         ntable_strtime_delta(ndtc->ndtc_last_rand));
 457
 458                 fprintf(fp, "%s", _SL_);
 459                 fprintf(fp, "        ");
 460
 461                 fprintf(fp, "hash_rnd %u ", ndtc->ndtc_hash_rnd);
 462                 fprintf(fp, "hash_mask %08x ", ndtc->ndtc_hash_mask);
 463
 464                 fprintf(fp, "hash_chain_gc %u ", ndtc->ndtc_hash_chain_gc);
 465                 fprintf(fp, "proxy_qlen %u ", ndtc->ndtc_proxy_qlen);
 466
 467                 fprintf(fp, "%s", _SL_);
 468         }
 469
 470         if (tb[NDTA_PARMS]) {
 471                 if (tpb[NDTPA_IFINDEX]) {
 472                         __u32 ifindex = *(__u32 *)RTA_DATA(tpb[NDTPA_IFINDEX]);
 473
 474                         fprintf(fp, "    ");
 475                         fprintf(fp, "dev %s ", ll_index_to_name(ifindex));
 476                         fprintf(fp, "%s", _SL_);
 477                 }
 478
 479                 fprintf(fp, "    ");
 480
 481                 if (tpb[NDTPA_REFCNT]) {
 482                         __u32 refcnt = *(__u32 *)RTA_DATA(tpb[NDTPA_REFCNT]);
 483                         fprintf(fp, "refcnt %u ", refcnt);
 484                 }
 485                 if (tpb[NDTPA_REACHABLE_TIME]) {
 486                         __u64 reachable = *(__u64 *)RTA_DATA(tpb[NDTPA_REACHABLE_TIME]);
 487                         fprintf(fp, "reachable %llu ", reachable);
 488                 }
 489                 if (tpb[NDTPA_BASE_REACHABLE_TIME]) {
 490                         __u64 breachable = *(__u64 *)RTA_DATA(tpb[NDTPA_BASE_REACHABLE_TIME]);
 491                         fprintf(fp, "base_reachable %llu ", breachable);
 492                 }
 493                 if (tpb[NDTPA_RETRANS_TIME]) {
 494                         __u64 retrans = *(__u64 *)RTA_DATA(tpb[NDTPA_RETRANS_TIME]);
 495                         fprintf(fp, "retrans %llu ", retrans);
 496                 }
 497
 498                 fprintf(fp, "%s", _SL_);
 499
 500                 fprintf(fp, "    ");
 501
 502                 if (tpb[NDTPA_GC_STALETIME]) {
 503                         __u64 gc_stale = *(__u64 *)RTA_DATA(tpb[NDTPA_GC_STALETIME]);
 504                         fprintf(fp, "gc_stale %llu ", gc_stale);
 505                 }
 506                 if (tpb[NDTPA_DELAY_PROBE_TIME]) {
 507                         __u64 delay_probe = *(__u64 *)RTA_DATA(tpb[NDTPA_DELAY_PROBE_TIME]);
 508                         fprintf(fp, "delay_probe %llu ", delay_probe);
 509                 }
 510                 if (tpb[NDTPA_QUEUE_LEN]) {
 511                         __u32 queue = *(__u32 *)RTA_DATA(tpb[NDTPA_QUEUE_LEN]);
 512                         fprintf(fp, "queue %u ", queue);
 513                 }
 514
 515                 fprintf(fp, "%s", _SL_);
 516
 517                 fprintf(fp, "    ");
 518
 519                 if (tpb[NDTPA_APP_PROBES]) {
 520                         __u32 aprobe = *(__u32 *)RTA_DATA(tpb[NDTPA_APP_PROBES]);
 521                         fprintf(fp, "app_probes %u ", aprobe);
 522                 }
 523                 if (tpb[NDTPA_UCAST_PROBES]) {
 524                         __u32 uprobe = *(__u32 *)RTA_DATA(tpb[NDTPA_UCAST_PROBES]);
 525                         fprintf(fp, "ucast_probes %u ", uprobe);
 526                 }
 527                 if (tpb[NDTPA_MCAST_PROBES]) {
 528                         __u32 mprobe = *(__u32 *)RTA_DATA(tpb[NDTPA_MCAST_PROBES]);
 529                         fprintf(fp, "mcast_probes %u ", mprobe);
 530                 }
 531
 532                 fprintf(fp, "%s", _SL_);
 533
 534                 fprintf(fp, "    ");
 535
 536                 if (tpb[NDTPA_ANYCAST_DELAY]) {
 537                         __u64 anycast_delay = *(__u64 *)RTA_DATA(tpb[NDTPA_ANYCAST_DELAY]);
 538                         fprintf(fp, "anycast_delay %llu ", anycast_delay);
 539                 }
 540                 if (tpb[NDTPA_PROXY_DELAY]) {
 541                         __u64 proxy_delay = *(__u64 *)RTA_DATA(tpb[NDTPA_PROXY_DELAY]);
 542                         fprintf(fp, "proxy_delay %llu ", proxy_delay);
 543                 }
 544                 if (tpb[NDTPA_PROXY_QLEN]) {
 545                         __u32 pqueue = *(__u32 *)RTA_DATA(tpb[NDTPA_PROXY_QLEN]);
 546                         fprintf(fp, "proxy_queue %u ", pqueue);
 547                 }
 548                 if (tpb[NDTPA_LOCKTIME]) {
 549                         __u64 locktime = *(__u64 *)RTA_DATA(tpb[NDTPA_LOCKTIME]);
 550                         fprintf(fp, "locktime %llu ", locktime);
 551                 }
 552
 553                 fprintf(fp, "%s", _SL_);
 554         }
 555
 556         if (tb[NDTA_STATS] && show_stats) {
 557                 struct ndt_stats *ndts = RTA_DATA(tb[NDTA_STATS]);
 558
 559                 fprintf(fp, "    ");
 560                 fprintf(fp, "stats ");
 561
 562                 fprintf(fp, "allocs %llu ", ndts->ndts_allocs);
 563                 fprintf(fp, "destroys %llu ", ndts->ndts_destroys);
 564                 fprintf(fp, "hash_grows %llu ", ndts->ndts_hash_grows);
 565
 566                 fprintf(fp, "%s", _SL_);
 567                 fprintf(fp, "        ");
 568
 569                 fprintf(fp, "res_failed %llu ", ndts->ndts_res_failed);
 570                 fprintf(fp, "lookups %llu ", ndts->ndts_lookups);
 571                 fprintf(fp, "hits %llu ", ndts->ndts_hits);
 572
 573                 fprintf(fp, "%s", _SL_);
 574                 fprintf(fp, "        ");
 575
 576                 fprintf(fp, "rcv_probes_mcast %llu ", ndts->ndts_rcv_probes_mcast);
 577                 fprintf(fp, "rcv_probes_ucast %llu ", ndts->ndts_rcv_probes_ucast);
 578
 579                 fprintf(fp, "%s", _SL_);
 580                 fprintf(fp, "        ");
 581
 582                 fprintf(fp, "periodic_gc_runs %llu ", ndts->ndts_periodic_gc_runs);
 583                 fprintf(fp, "forced_gc_runs %llu ", ndts->ndts_forced_gc_runs);
 584
 585                 fprintf(fp, "%s", _SL_);
 586         }
 587
 588         fprintf(fp, "\n");
 589
 590         fflush(fp);
 591         return 0;
 592 }
 593
 594 void ipntable_reset_filter(void)
 595 {
 596         memset(&filter, 0, sizeof(filter));
 597 }
 598
 599 static int ipntable_show(int argc, char **argv)
 600 {
 601         ipntable_reset_filter();
 602
 603         filter.family = preferred_family;
 604
 605         while (argc > 0) {
 606                 if (strcmp(*argv, "dev") == 0) {
 607                         NEXT_ARG();
 608
 609                         if (strcmp("none", *argv) == 0)
 610                                 filter.index = NONE_DEV;
 611                         else if ((filter.index = ll_name_to_index(*argv)) == 0)
 612                                 invarg("\"DEV\" is invalid", *argv);
 613                 } else if (strcmp(*argv, "name") == 0) {
 614                         NEXT_ARG();
 615
 616                         strncpy(filter.name, *argv, sizeof(filter.name));
 617                 } else
 618                         invarg("unknown", *argv);
 619
 620                 argc--; argv++;
 621         }
 622
 623         if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETNEIGHTBL) < 0) {
 624                 perror("Cannot send dump request");
 625                 exit(1);
 626         }
 627
 628         if (rtnl_dump_filter(&rth, print_ntable, stdout, NULL, NULL) < 0) {
 629                 fprintf(stderr, "Dump terminated\n");
 630                 exit(1);
 631         }
 632
 633         return 0;
 634 }
 635
 636 int do_ipntable(int argc, char **argv)
 637 {
 638         ll_init_map(&rth);
 639
 640         if (argc > 0) {
 641                 if (matches(*argv, "change") == 0 ||
 642                     matches(*argv, "chg") == 0)
 643                         return ipntable_modify(RTM_SETNEIGHTBL,
 644                                                NLM_F_REPLACE,
 645                                                argc-1, argv+1);
 646                 if (matches(*argv, "show") == 0 ||
 647                     matches(*argv, "lst") == 0 ||
 648                     matches(*argv, "list") == 0)
 649                         return ipntable_show(argc-1, argv+1);
 650                 if (matches(*argv, "help") == 0)
 651                         usage();
 652         } else
 653                 return ipntable_show(0, NULL);
 654
 655         fprintf(stderr, "Command \"%s\" is unknown, try \"ip ntable help\".\n", *argv);
 656         exit(-1);
 657 }