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 <sys/socket.h>
  31 #include <time.h>
  32
  33 #include "utils.h"
  34 #include "ip_common.h"
  35
  36 static struct
  37 {
  38         int family;
  39         int index;
  40 #define NONE_DEV        (-1)
  41         char name[1024];
  42 } filter;
  43
  44 static void usage(void) __attribute__((noreturn));
  45
  46 static void usage(void)
  47 {
  48         fprintf(stderr,
  49                 "Usage: ip ntable change name NAME [ dev DEV ]\n"
  50                 "          [ thresh1 VAL ] [ thresh2 VAL ] [ thresh3 VAL ] [ gc_int MSEC ]\n"
  51                 "          [ PARMS ]\n"
  52                 "Usage: ip ntable show [ dev DEV ] [ name NAME ]\n"
  53
  54                 "PARMS := [ base_reachable MSEC ] [ retrans MSEC ] [ gc_stale MSEC ]\n"
  55                 "         [ delay_probe MSEC ] [ queue LEN ]\n"
  56                 "         [ app_probs VAL ] [ ucast_probes VAL ] [ mcast_probes VAL ]\n"
  57                 "         [ anycast_delay MSEC ] [ proxy_delay MSEC ] [ proxy_queue LEN ]\n"
  58                 "         [ locktime MSEC ]\n"
  59                 );
  60
  61         exit(-1);
  62 }
  63
  64 static int ipntable_modify(int cmd, int flags, int argc, char **argv)
  65 {
  66         struct {
  67                 struct nlmsghdr         n;
  68                 struct ndtmsg           ndtm;
  69                 char                    buf[1024];
  70         } req;
  71         char *namep = NULL;
  72         char *threshsp = NULL;
  73         char *gc_intp = NULL;
  74         char parms_buf[1024];
  75         struct rtattr *parms_rta = (struct rtattr *)parms_buf;
  76         int parms_change = 0;
  77
  78         memset(&req, 0, sizeof(req));
  79
  80         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndtmsg));
  81         req.n.nlmsg_flags = NLM_F_REQUEST|flags;
  82         req.n.nlmsg_type = cmd;
  83
  84         req.ndtm.ndtm_family = preferred_family;
  85         req.ndtm.ndtm_pad1 = 0;
  86         req.ndtm.ndtm_pad2 = 0;
  87
  88         memset(&parms_buf, 0, sizeof(parms_buf));
  89
  90         parms_rta->rta_type = NDTA_PARMS;
  91         parms_rta->rta_len = RTA_LENGTH(0);
  92
  93         while (argc > 0) {
  94                 if (strcmp(*argv, "name") == 0) {
  95                         int len;
  96
  97                         NEXT_ARG();
  98                         if (namep)
  99                                 duparg("NAME", *argv);
 100
 101                         namep = *argv;
 102                         len = strlen(namep) + 1;
 103                         addattr_l(&req.n, sizeof(req), NDTA_NAME, namep, len);
 104                 } else if (strcmp(*argv, "thresh1") == 0) {
 105                         __u32 thresh1;
 106
 107                         NEXT_ARG();
 108                         threshsp = *argv;
 109
 110                         if (get_u32(&thresh1, *argv, 0))
 111                                 invarg("\"thresh1\" value is invalid", *argv);
 112
 113                         addattr32(&req.n, sizeof(req), NDTA_THRESH1, thresh1);
 114                 } else if (strcmp(*argv, "thresh2") == 0) {
 115                         __u32 thresh2;
 116
 117                         NEXT_ARG();
 118                         threshsp = *argv;
 119
 120                         if (get_u32(&thresh2, *argv, 0))
 121                                 invarg("\"thresh2\" value is invalid", *argv);
 122
 123                         addattr32(&req.n, sizeof(req), NDTA_THRESH2, thresh2);
 124                 } else if (strcmp(*argv, "thresh3") == 0) {
 125                         __u32 thresh3;
 126
 127                         NEXT_ARG();
 128                         threshsp = *argv;
 129
 130                         if (get_u32(&thresh3, *argv, 0))
 131                                 invarg("\"thresh3\" value is invalid", *argv);
 132
 133                         addattr32(&req.n, sizeof(req), NDTA_THRESH3, thresh3);
 134                 } else if (strcmp(*argv, "gc_int") == 0) {
 135                         __u64 gc_int;
 136
 137                         NEXT_ARG();
 138                         gc_intp = *argv;
 139
 140                         if (get_u64(&gc_int, *argv, 0))
 141                                 invarg("\"gc_int\" value is invalid", *argv);
 142
 143                         addattr_l(&req.n, sizeof(req), NDTA_GC_INTERVAL,
 144                                   &gc_int, sizeof(gc_int));
 145                 } else if (strcmp(*argv, "dev") == 0) {
 146                         __u32 ifindex;
 147
 148                         NEXT_ARG();
 149                         ifindex = ll_name_to_index(*argv);
 150                         if (ifindex == 0) {
 151                                 fprintf(stderr, "Cannot find device \"%s\"\n", *argv);
 152                                 return -1;
 153                         }
 154
 155                         rta_addattr32(parms_rta, sizeof(parms_buf),
 156                                       NDTPA_IFINDEX, ifindex);
 157                 } else if (strcmp(*argv, "base_reachable") == 0) {
 158                         __u64 breachable;
 159
 160                         NEXT_ARG();
 161
 162                         if (get_u64(&breachable, *argv, 0))
 163                                 invarg("\"base_reachable\" value is invalid", *argv);
 164
 165                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 166                                       NDTPA_BASE_REACHABLE_TIME,
 167                                       &breachable, sizeof(breachable));
 168                         parms_change = 1;
 169                 } else if (strcmp(*argv, "retrans") == 0) {
 170                         __u64 retrans;
 171
 172                         NEXT_ARG();
 173
 174                         if (get_u64(&retrans, *argv, 0))
 175                                 invarg("\"retrans\" value is invalid", *argv);
 176
 177                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 178                                       NDTPA_RETRANS_TIME,
 179                                       &retrans, sizeof(retrans));
 180                         parms_change = 1;
 181                 } else if (strcmp(*argv, "gc_stale") == 0) {
 182                         __u64 gc_stale;
 183
 184                         NEXT_ARG();
 185
 186                         if (get_u64(&gc_stale, *argv, 0))
 187                                 invarg("\"gc_stale\" value is invalid", *argv);
 188
 189                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 190                                       NDTPA_GC_STALETIME,
 191                                       &gc_stale, sizeof(gc_stale));
 192                         parms_change = 1;
 193                 } else if (strcmp(*argv, "delay_probe") == 0) {
 194                         __u64 delay_probe;
 195
 196                         NEXT_ARG();
 197
 198                         if (get_u64(&delay_probe, *argv, 0))
 199                                 invarg("\"delay_probe\" value is invalid", *argv);
 200
 201                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 202                                       NDTPA_DELAY_PROBE_TIME,
 203                                       &delay_probe, sizeof(delay_probe));
 204                         parms_change = 1;
 205                 } else if (strcmp(*argv, "queue") == 0) {
 206                         __u32 queue;
 207
 208                         NEXT_ARG();
 209
 210                         if (get_u32(&queue, *argv, 0))
 211                                 invarg("\"queue\" value is invalid", *argv);
 212
 213                         if (!parms_rta)
 214                                 parms_rta = (struct rtattr *)&parms_buf;
 215                         rta_addattr32(parms_rta, sizeof(parms_buf),
 216                                       NDTPA_QUEUE_LEN, queue);
 217                         parms_change = 1;
 218                 } else if (strcmp(*argv, "app_probes") == 0) {
 219                         __u32 aprobe;
 220
 221                         NEXT_ARG();
 222
 223                         if (get_u32(&aprobe, *argv, 0))
 224                                 invarg("\"app_probes\" value is invalid", *argv);
 225
 226                         rta_addattr32(parms_rta, sizeof(parms_buf),
 227                                       NDTPA_APP_PROBES, aprobe);
 228                         parms_change = 1;
 229                 } else if (strcmp(*argv, "ucast_probes") == 0) {
 230                         __u32 uprobe;
 231
 232                         NEXT_ARG();
 233
 234                         if (get_u32(&uprobe, *argv, 0))
 235                                 invarg("\"ucast_probes\" value is invalid", *argv);
 236
 237                         rta_addattr32(parms_rta, sizeof(parms_buf),
 238                                       NDTPA_UCAST_PROBES, uprobe);
 239                         parms_change = 1;
 240                 } else if (strcmp(*argv, "mcast_probes") == 0) {
 241                         __u32 mprobe;
 242
 243                         NEXT_ARG();
 244
 245                         if (get_u32(&mprobe, *argv, 0))
 246                                 invarg("\"mcast_probes\" value is invalid", *argv);
 247
 248                         rta_addattr32(parms_rta, sizeof(parms_buf),
 249                                       NDTPA_MCAST_PROBES, mprobe);
 250                         parms_change = 1;
 251                 } else if (strcmp(*argv, "anycast_delay") == 0) {
 252                         __u64 anycast_delay;
 253
 254                         NEXT_ARG();
 255
 256                         if (get_u64(&anycast_delay, *argv, 0))
 257                                 invarg("\"anycast_delay\" value is invalid", *argv);
 258
 259                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 260                                       NDTPA_ANYCAST_DELAY,
 261                                       &anycast_delay, sizeof(anycast_delay));
 262                         parms_change = 1;
 263                 } else if (strcmp(*argv, "proxy_delay") == 0) {
 264                         __u64 proxy_delay;
 265
 266                         NEXT_ARG();
 267
 268                         if (get_u64(&proxy_delay, *argv, 0))
 269                                 invarg("\"proxy_delay\" value is invalid", *argv);
 270
 271                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 272                                       NDTPA_PROXY_DELAY,
 273                                       &proxy_delay, sizeof(proxy_delay));
 274                         parms_change = 1;
 275                 } else if (strcmp(*argv, "proxy_queue") == 0) {
 276                         __u32 pqueue;
 277
 278                         NEXT_ARG();
 279
 280                         if (get_u32(&pqueue, *argv, 0))
 281                                 invarg("\"proxy_queue\" value is invalid", *argv);
 282
 283                         rta_addattr32(parms_rta, sizeof(parms_buf),
 284                                       NDTPA_PROXY_QLEN, pqueue);
 285                         parms_change = 1;
 286                 } else if (strcmp(*argv, "locktime") == 0) {
 287                         __u64 locktime;
 288
 289                         NEXT_ARG();
 290
 291                         if (get_u64(&locktime, *argv, 0))
 292                                 invarg("\"locktime\" value is invalid", *argv);
 293
 294                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 295                                       NDTPA_LOCKTIME,
 296                                       &locktime, sizeof(locktime));
 297                         parms_change = 1;
 298                 } else {
 299                         invarg("unknown", *argv);
 300                 }
 301
 302                 argc--; argv++;
 303         }
 304
 305         if (!namep)
 306                 missarg("NAME");
 307         if (!threshsp && !gc_intp && !parms_change) {
 308                 fprintf(stderr, "Not enough information: changable attributes required.\n");
 309                 exit(-1);
 310         }
 311
 312         if (parms_rta->rta_len > RTA_LENGTH(0)) {
 313                 addattr_l(&req.n, sizeof(req), NDTA_PARMS, RTA_DATA(parms_rta),
 314                           RTA_PAYLOAD(parms_rta));
 315         }
 316
 317         if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
 318                 exit(2);
 319
 320         return 0;
 321 }
 322
 323 static const char *ntable_strtime_delta(__u32 msec)
 324 {
 325         static char str[32];
 326         struct timeval now;
 327         time_t t;
 328         struct tm *tp;
 329
 330         if (msec == 0)
 331                 goto error;
 332
 333         memset(&now, 0, sizeof(now));
 334
 335         if (gettimeofday(&now, NULL) < 0) {
 336                 perror("gettimeofday");
 337                 goto error;
 338         }
 339
 340         t = now.tv_sec - (msec / 1000);
 341         tp = localtime(&t);
 342         if (!tp)
 343                 goto error;
 344
 345         strftime(str, sizeof(str), "%Y-%m-%d %T", tp);
 346
 347         return str;
 348  error:
 349         strcpy(str, "(error)");
 350         return str;
 351 }
 352
 353 int print_ntable(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
 354 {
 355         FILE *fp = (FILE*)arg;
 356         struct ndtmsg *ndtm = NLMSG_DATA(n);
 357         int len = n->nlmsg_len;
 358         struct rtattr *tb[NDTA_MAX+1];
 359         struct rtattr *tpb[NDTPA_MAX+1];
 360         int ret;
 361
 362         if (n->nlmsg_type != RTM_NEWNEIGHTBL) {
 363                 fprintf(stderr, "Not NEIGHTBL: %08x %08x %08x\n",
 364                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 365                 return 0;
 366         }
 367         len -= NLMSG_LENGTH(sizeof(*ndtm));
 368         if (len < 0) {
 369                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 370                 return -1;
 371         }
 372
 373         if (preferred_family && preferred_family != ndtm->ndtm_family)
 374                 return 0;
 375
 376         parse_rtattr(tb, NDTA_MAX, NDTA_RTA(ndtm),
 377                      n->nlmsg_len - NLMSG_LENGTH(sizeof(*ndtm)));
 378
 379         if (tb[NDTA_NAME]) {
 380                 const char *name = rta_getattr_str(tb[NDTA_NAME]);
 381
 382                 if (strlen(filter.name) > 0 && strcmp(filter.name, name))
 383                         return 0;
 384         }
 385         if (tb[NDTA_PARMS]) {
 386                 parse_rtattr(tpb, NDTPA_MAX, RTA_DATA(tb[NDTA_PARMS]),
 387                              RTA_PAYLOAD(tb[NDTA_PARMS]));
 388
 389                 if (tpb[NDTPA_IFINDEX]) {
 390                         __u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);
 391
 392                         if (filter.index && filter.index != ifindex)
 393                                 return 0;
 394                 } else {
 395                         if (filter.index && filter.index != NONE_DEV)
 396                                 return 0;
 397                 }
 398         }
 399
 400         if (ndtm->ndtm_family == AF_INET)
 401                 fprintf(fp, "inet ");
 402         else if (ndtm->ndtm_family == AF_INET6)
 403                 fprintf(fp, "inet6 ");
 404         else if (ndtm->ndtm_family == AF_DECnet)
 405                 fprintf(fp, "dnet ");
 406         else
 407                 fprintf(fp, "(%d) ", ndtm->ndtm_family);
 408
 409         if (tb[NDTA_NAME]) {
 410                 const char *name = rta_getattr_str(tb[NDTA_NAME]);
 411                 fprintf(fp, "%s ", name);
 412         }
 413
 414         fprintf(fp, "%s", _SL_);
 415
 416         ret = (tb[NDTA_THRESH1] || tb[NDTA_THRESH2] || tb[NDTA_THRESH3] ||
 417                tb[NDTA_GC_INTERVAL]);
 418         if (ret)
 419                 fprintf(fp, "    ");
 420
 421         if (tb[NDTA_THRESH1]) {
 422                 __u32 thresh1 = rta_getattr_u32(tb[NDTA_THRESH1]);
 423                 fprintf(fp, "thresh1 %u ", thresh1);
 424         }
 425         if (tb[NDTA_THRESH2]) {
 426                 __u32 thresh2 = rta_getattr_u32(tb[NDTA_THRESH2]);
 427                 fprintf(fp, "thresh2 %u ", thresh2);
 428         }
 429         if (tb[NDTA_THRESH3]) {
 430                 __u32 thresh3 = rta_getattr_u32(tb[NDTA_THRESH3]);
 431                 fprintf(fp, "thresh3 %u ", thresh3);
 432         }
 433         if (tb[NDTA_GC_INTERVAL]) {
 434                 __u64 gc_int = rta_getattr_u64(tb[NDTA_GC_INTERVAL]);
 435                 fprintf(fp, "gc_int %llu ", (unsigned long long) gc_int);
 436         }
 437
 438         if (ret)
 439                 fprintf(fp, "%s", _SL_);
 440
 441         if (tb[NDTA_CONFIG] && show_stats) {
 442                 struct ndt_config *ndtc = RTA_DATA(tb[NDTA_CONFIG]);
 443
 444                 fprintf(fp, "    ");
 445                 fprintf(fp, "config ");
 446
 447                 fprintf(fp, "key_len %u ", ndtc->ndtc_key_len);
 448                 fprintf(fp, "entry_size %u ", ndtc->ndtc_entry_size);
 449                 fprintf(fp, "entries %u ", ndtc->ndtc_entries);
 450
 451                 fprintf(fp, "%s", _SL_);
 452                 fprintf(fp, "        ");
 453
 454                 fprintf(fp, "last_flush %s ",
 455                         ntable_strtime_delta(ndtc->ndtc_last_flush));
 456                 fprintf(fp, "last_rand %s ",
 457                         ntable_strtime_delta(ndtc->ndtc_last_rand));
 458
 459                 fprintf(fp, "%s", _SL_);
 460                 fprintf(fp, "        ");
 461
 462                 fprintf(fp, "hash_rnd %u ", ndtc->ndtc_hash_rnd);
 463                 fprintf(fp, "hash_mask %08x ", ndtc->ndtc_hash_mask);
 464
 465                 fprintf(fp, "hash_chain_gc %u ", ndtc->ndtc_hash_chain_gc);
 466                 fprintf(fp, "proxy_qlen %u ", ndtc->ndtc_proxy_qlen);
 467
 468                 fprintf(fp, "%s", _SL_);
 469         }
 470
 471         if (tb[NDTA_PARMS]) {
 472                 if (tpb[NDTPA_IFINDEX]) {
 473                         __u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);
 474
 475                         fprintf(fp, "    ");
 476                         fprintf(fp, "dev %s ", ll_index_to_name(ifindex));
 477                         fprintf(fp, "%s", _SL_);
 478                 }
 479
 480                 fprintf(fp, "    ");
 481
 482                 if (tpb[NDTPA_REFCNT]) {
 483                         __u32 refcnt = rta_getattr_u32(tpb[NDTPA_REFCNT]);
 484                         fprintf(fp, "refcnt %u ", refcnt);
 485                 }
 486                 if (tpb[NDTPA_REACHABLE_TIME]) {
 487                         __u64 reachable = rta_getattr_u64(tpb[NDTPA_REACHABLE_TIME]);
 488                         fprintf(fp, "reachable %llu ",
 489                                 (unsigned long long) reachable);
 490                 }
 491                 if (tpb[NDTPA_BASE_REACHABLE_TIME]) {
 492                         __u64 breachable = rta_getattr_u64(tpb[NDTPA_BASE_REACHABLE_TIME]);
 493                         fprintf(fp, "base_reachable %llu ",
 494                                 (unsigned long long) breachable);
 495                 }
 496                 if (tpb[NDTPA_RETRANS_TIME]) {
 497                         __u64 retrans = rta_getattr_u64(tpb[NDTPA_RETRANS_TIME]);
 498                         fprintf(fp, "retrans %llu ",
 499                                 (unsigned long long) retrans);
 500                 }
 501
 502                 fprintf(fp, "%s", _SL_);
 503
 504                 fprintf(fp, "    ");
 505
 506                 if (tpb[NDTPA_GC_STALETIME]) {
 507                         __u64 gc_stale = rta_getattr_u64(tpb[NDTPA_GC_STALETIME]);
 508                         fprintf(fp, "gc_stale %llu ",
 509                                 (unsigned long long) gc_stale);
 510                 }
 511                 if (tpb[NDTPA_DELAY_PROBE_TIME]) {
 512                         __u64 delay_probe = rta_getattr_u64(tpb[NDTPA_DELAY_PROBE_TIME]);
 513                         fprintf(fp, "delay_probe %llu ",
 514                                 (unsigned long long) delay_probe);
 515                 }
 516                 if (tpb[NDTPA_QUEUE_LEN]) {
 517                         __u32 queue = rta_getattr_u32(tpb[NDTPA_QUEUE_LEN]);
 518                         fprintf(fp, "queue %u ", queue);
 519                 }
 520
 521                 fprintf(fp, "%s", _SL_);
 522
 523                 fprintf(fp, "    ");
 524
 525                 if (tpb[NDTPA_APP_PROBES]) {
 526                         __u32 aprobe = rta_getattr_u32(tpb[NDTPA_APP_PROBES]);
 527                         fprintf(fp, "app_probes %u ", aprobe);
 528                 }
 529                 if (tpb[NDTPA_UCAST_PROBES]) {
 530                         __u32 uprobe = rta_getattr_u32(tpb[NDTPA_UCAST_PROBES]);
 531                         fprintf(fp, "ucast_probes %u ", uprobe);
 532                 }
 533                 if (tpb[NDTPA_MCAST_PROBES]) {
 534                         __u32 mprobe = rta_getattr_u32(tpb[NDTPA_MCAST_PROBES]);
 535                         fprintf(fp, "mcast_probes %u ", mprobe);
 536                 }
 537
 538                 fprintf(fp, "%s", _SL_);
 539
 540                 fprintf(fp, "    ");
 541
 542                 if (tpb[NDTPA_ANYCAST_DELAY]) {
 543                         __u64 anycast_delay = rta_getattr_u64(tpb[NDTPA_ANYCAST_DELAY]);
 544                         fprintf(fp, "anycast_delay %llu ",
 545                                 (unsigned long long) anycast_delay);
 546                 }
 547                 if (tpb[NDTPA_PROXY_DELAY]) {
 548                         __u64 proxy_delay = rta_getattr_u64(tpb[NDTPA_PROXY_DELAY]);
 549                         fprintf(fp, "proxy_delay %llu ",
 550                                 (unsigned long long) proxy_delay);
 551                 }
 552                 if (tpb[NDTPA_PROXY_QLEN]) {
 553                         __u32 pqueue = rta_getattr_u32(tpb[NDTPA_PROXY_QLEN]);
 554                         fprintf(fp, "proxy_queue %u ", pqueue);
 555                 }
 556                 if (tpb[NDTPA_LOCKTIME]) {
 557                         __u64 locktime = rta_getattr_u64(tpb[NDTPA_LOCKTIME]);
 558                         fprintf(fp, "locktime %llu ",
 559                                 (unsigned long long) locktime);
 560                 }
 561
 562                 fprintf(fp, "%s", _SL_);
 563         }
 564
 565         if (tb[NDTA_STATS] && show_stats) {
 566                 struct ndt_stats *ndts = RTA_DATA(tb[NDTA_STATS]);
 567
 568                 fprintf(fp, "    ");
 569                 fprintf(fp, "stats ");
 570
 571                 fprintf(fp, "allocs %llu ",
 572                         (unsigned long long) ndts->ndts_allocs);
 573                 fprintf(fp, "destroys %llu ",
 574                         (unsigned long long) ndts->ndts_destroys);
 575                 fprintf(fp, "hash_grows %llu ",
 576                         (unsigned long long) ndts->ndts_hash_grows);
 577
 578                 fprintf(fp, "%s", _SL_);
 579                 fprintf(fp, "        ");
 580
 581                 fprintf(fp, "res_failed %llu ",
 582                         (unsigned long long) ndts->ndts_res_failed);
 583                 fprintf(fp, "lookups %llu ",
 584                         (unsigned long long) ndts->ndts_lookups);
 585                 fprintf(fp, "hits %llu ",
 586                         (unsigned long long) ndts->ndts_hits);
 587
 588                 fprintf(fp, "%s", _SL_);
 589                 fprintf(fp, "        ");
 590
 591                 fprintf(fp, "rcv_probes_mcast %llu ",
 592                         (unsigned long long) ndts->ndts_rcv_probes_mcast);
 593                 fprintf(fp, "rcv_probes_ucast %llu ",
 594                         (unsigned long long) ndts->ndts_rcv_probes_ucast);
 595
 596                 fprintf(fp, "%s", _SL_);
 597                 fprintf(fp, "        ");
 598
 599                 fprintf(fp, "periodic_gc_runs %llu ",
 600                         (unsigned long long) ndts->ndts_periodic_gc_runs);
 601                 fprintf(fp, "forced_gc_runs %llu ",
 602                         (unsigned long long) ndts->ndts_forced_gc_runs);
 603
 604                 fprintf(fp, "%s", _SL_);
 605         }
 606
 607         fprintf(fp, "\n");
 608
 609         fflush(fp);
 610         return 0;
 611 }
 612
 613 void ipntable_reset_filter(void)
 614 {
 615         memset(&filter, 0, sizeof(filter));
 616 }
 617
 618 static int ipntable_show(int argc, char **argv)
 619 {
 620         ipntable_reset_filter();
 621
 622         filter.family = preferred_family;
 623
 624         while (argc > 0) {
 625                 if (strcmp(*argv, "dev") == 0) {
 626                         NEXT_ARG();
 627
 628                         if (strcmp("none", *argv) == 0)
 629                                 filter.index = NONE_DEV;
 630                         else if ((filter.index = ll_name_to_index(*argv)) == 0)
 631                                 invarg("\"DEV\" is invalid", *argv);
 632                 } else if (strcmp(*argv, "name") == 0) {
 633                         NEXT_ARG();
 634
 635                         strncpy(filter.name, *argv, sizeof(filter.name));
 636                 } else
 637                         invarg("unknown", *argv);
 638
 639                 argc--; argv++;
 640         }
 641
 642         if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETNEIGHTBL) < 0) {
 643                 perror("Cannot send dump request");
 644                 exit(1);
 645         }
 646
 647         if (rtnl_dump_filter(&rth, print_ntable, stdout) < 0) {
 648                 fprintf(stderr, "Dump terminated\n");
 649                 exit(1);
 650         }
 651
 652         return 0;
 653 }
 654
 655 int do_ipntable(int argc, char **argv)
 656 {
 657         ll_init_map(&rth);
 658
 659         if (argc > 0) {
 660                 if (matches(*argv, "change") == 0 ||
 661                     matches(*argv, "chg") == 0)
 662                         return ipntable_modify(RTM_SETNEIGHTBL,
 663                                                NLM_F_REPLACE,
 664                                                argc-1, argv+1);
 665                 if (matches(*argv, "show") == 0 ||
 666                     matches(*argv, "lst") == 0 ||
 667                     matches(*argv, "list") == 0)
 668                         return ipntable_show(argc-1, argv+1);
 669                 if (matches(*argv, "help") == 0)
 670                         usage();
 671         } else
 672                 return ipntable_show(0, NULL);
 673
 674         fprintf(stderr, "Command \"%s\" is unknown, try \"ip ntable help\".\n", *argv);
 675         exit(-1);
 676 }