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, see <http://www.gnu.org/licenses>.
  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>
  29 #include <sys/socket.h>
  30 #include <time.h>
  31
  32 #include "utils.h"
  33 #include "ip_common.h"
  34 #include "json_print.h"
  35
  36 static struct
  37 {
  38         int family;
  39         int index;
  40 #define NONE_DEV        (-1)
  41         const char *name;
  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_probes 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                 .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndtmsg)),
  72                 .n.nlmsg_flags = NLM_F_REQUEST | flags,
  73                 .n.nlmsg_type = cmd,
  74                 .ndtm.ndtm_family = preferred_family,
  75         };
  76         char *namep = NULL;
  77         char *threshsp = NULL;
  78         char *gc_intp = NULL;
  79         char parms_buf[1024] = {};
  80         struct rtattr *parms_rta = (struct rtattr *)parms_buf;
  81         int parms_change = 0;
  82
  83         parms_rta->rta_type = NDTA_PARMS;
  84         parms_rta->rta_len = RTA_LENGTH(0);
  85
  86         while (argc > 0) {
  87                 if (strcmp(*argv, "name") == 0) {
  88                         int len;
  89
  90                         NEXT_ARG();
  91                         if (namep)
  92                                 duparg("NAME", *argv);
  93
  94                         namep = *argv;
  95                         len = strlen(namep) + 1;
  96                         addattr_l(&req.n, sizeof(req), NDTA_NAME, namep, len);
  97                 } else if (strcmp(*argv, "thresh1") == 0) {
  98                         __u32 thresh1;
  99
 100                         NEXT_ARG();
 101                         threshsp = *argv;
 102
 103                         if (get_u32(&thresh1, *argv, 0))
 104                                 invarg("\"thresh1\" value is invalid", *argv);
 105
 106                         addattr32(&req.n, sizeof(req), NDTA_THRESH1, thresh1);
 107                 } else if (strcmp(*argv, "thresh2") == 0) {
 108                         __u32 thresh2;
 109
 110                         NEXT_ARG();
 111                         threshsp = *argv;
 112
 113                         if (get_u32(&thresh2, *argv, 0))
 114                                 invarg("\"thresh2\" value is invalid", *argv);
 115
 116                         addattr32(&req.n, sizeof(req), NDTA_THRESH2, thresh2);
 117                 } else if (strcmp(*argv, "thresh3") == 0) {
 118                         __u32 thresh3;
 119
 120                         NEXT_ARG();
 121                         threshsp = *argv;
 122
 123                         if (get_u32(&thresh3, *argv, 0))
 124                                 invarg("\"thresh3\" value is invalid", *argv);
 125
 126                         addattr32(&req.n, sizeof(req), NDTA_THRESH3, thresh3);
 127                 } else if (strcmp(*argv, "gc_int") == 0) {
 128                         __u64 gc_int;
 129
 130                         NEXT_ARG();
 131                         gc_intp = *argv;
 132
 133                         if (get_u64(&gc_int, *argv, 0))
 134                                 invarg("\"gc_int\" value is invalid", *argv);
 135
 136                         addattr_l(&req.n, sizeof(req), NDTA_GC_INTERVAL,
 137                                   &gc_int, sizeof(gc_int));
 138                 } else if (strcmp(*argv, "dev") == 0) {
 139                         __u32 ifindex;
 140
 141                         NEXT_ARG();
 142                         ifindex = ll_name_to_index(*argv);
 143                         if (!ifindex)
 144                                 return nodev(*argv);
 145
 146                         rta_addattr32(parms_rta, sizeof(parms_buf),
 147                                       NDTPA_IFINDEX, ifindex);
 148                 } else if (strcmp(*argv, "base_reachable") == 0) {
 149                         __u64 breachable;
 150
 151                         NEXT_ARG();
 152
 153                         if (get_u64(&breachable, *argv, 0))
 154                                 invarg("\"base_reachable\" value is invalid", *argv);
 155
 156                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 157                                       NDTPA_BASE_REACHABLE_TIME,
 158                                       &breachable, sizeof(breachable));
 159                         parms_change = 1;
 160                 } else if (strcmp(*argv, "retrans") == 0) {
 161                         __u64 retrans;
 162
 163                         NEXT_ARG();
 164
 165                         if (get_u64(&retrans, *argv, 0))
 166                                 invarg("\"retrans\" value is invalid", *argv);
 167
 168                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 169                                       NDTPA_RETRANS_TIME,
 170                                       &retrans, sizeof(retrans));
 171                         parms_change = 1;
 172                 } else if (strcmp(*argv, "gc_stale") == 0) {
 173                         __u64 gc_stale;
 174
 175                         NEXT_ARG();
 176
 177                         if (get_u64(&gc_stale, *argv, 0))
 178                                 invarg("\"gc_stale\" value is invalid", *argv);
 179
 180                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 181                                       NDTPA_GC_STALETIME,
 182                                       &gc_stale, sizeof(gc_stale));
 183                         parms_change = 1;
 184                 } else if (strcmp(*argv, "delay_probe") == 0) {
 185                         __u64 delay_probe;
 186
 187                         NEXT_ARG();
 188
 189                         if (get_u64(&delay_probe, *argv, 0))
 190                                 invarg("\"delay_probe\" value is invalid", *argv);
 191
 192                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 193                                       NDTPA_DELAY_PROBE_TIME,
 194                                       &delay_probe, sizeof(delay_probe));
 195                         parms_change = 1;
 196                 } else if (strcmp(*argv, "queue") == 0) {
 197                         __u32 queue;
 198
 199                         NEXT_ARG();
 200
 201                         if (get_u32(&queue, *argv, 0))
 202                                 invarg("\"queue\" value is invalid", *argv);
 203
 204                         rta_addattr32(parms_rta, sizeof(parms_buf),
 205                                       NDTPA_QUEUE_LEN, queue);
 206                         parms_change = 1;
 207                 } else if (strcmp(*argv, "app_probes") == 0) {
 208                         __u32 aprobe;
 209
 210                         NEXT_ARG();
 211
 212                         if (get_u32(&aprobe, *argv, 0))
 213                                 invarg("\"app_probes\" value is invalid", *argv);
 214
 215                         rta_addattr32(parms_rta, sizeof(parms_buf),
 216                                       NDTPA_APP_PROBES, aprobe);
 217                         parms_change = 1;
 218                 } else if (strcmp(*argv, "ucast_probes") == 0) {
 219                         __u32 uprobe;
 220
 221                         NEXT_ARG();
 222
 223                         if (get_u32(&uprobe, *argv, 0))
 224                                 invarg("\"ucast_probes\" value is invalid", *argv);
 225
 226                         rta_addattr32(parms_rta, sizeof(parms_buf),
 227                                       NDTPA_UCAST_PROBES, uprobe);
 228                         parms_change = 1;
 229                 } else if (strcmp(*argv, "mcast_probes") == 0) {
 230                         __u32 mprobe;
 231
 232                         NEXT_ARG();
 233
 234                         if (get_u32(&mprobe, *argv, 0))
 235                                 invarg("\"mcast_probes\" value is invalid", *argv);
 236
 237                         rta_addattr32(parms_rta, sizeof(parms_buf),
 238                                       NDTPA_MCAST_PROBES, mprobe);
 239                         parms_change = 1;
 240                 } else if (strcmp(*argv, "anycast_delay") == 0) {
 241                         __u64 anycast_delay;
 242
 243                         NEXT_ARG();
 244
 245                         if (get_u64(&anycast_delay, *argv, 0))
 246                                 invarg("\"anycast_delay\" value is invalid", *argv);
 247
 248                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 249                                       NDTPA_ANYCAST_DELAY,
 250                                       &anycast_delay, sizeof(anycast_delay));
 251                         parms_change = 1;
 252                 } else if (strcmp(*argv, "proxy_delay") == 0) {
 253                         __u64 proxy_delay;
 254
 255                         NEXT_ARG();
 256
 257                         if (get_u64(&proxy_delay, *argv, 0))
 258                                 invarg("\"proxy_delay\" value is invalid", *argv);
 259
 260                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 261                                       NDTPA_PROXY_DELAY,
 262                                       &proxy_delay, sizeof(proxy_delay));
 263                         parms_change = 1;
 264                 } else if (strcmp(*argv, "proxy_queue") == 0) {
 265                         __u32 pqueue;
 266
 267                         NEXT_ARG();
 268
 269                         if (get_u32(&pqueue, *argv, 0))
 270                                 invarg("\"proxy_queue\" value is invalid", *argv);
 271
 272                         rta_addattr32(parms_rta, sizeof(parms_buf),
 273                                       NDTPA_PROXY_QLEN, pqueue);
 274                         parms_change = 1;
 275                 } else if (strcmp(*argv, "locktime") == 0) {
 276                         __u64 locktime;
 277
 278                         NEXT_ARG();
 279
 280                         if (get_u64(&locktime, *argv, 0))
 281                                 invarg("\"locktime\" value is invalid", *argv);
 282
 283                         rta_addattr_l(parms_rta, sizeof(parms_buf),
 284                                       NDTPA_LOCKTIME,
 285                                       &locktime, sizeof(locktime));
 286                         parms_change = 1;
 287                 } else {
 288                         invarg("unknown", *argv);
 289                 }
 290
 291                 argc--; argv++;
 292         }
 293
 294         if (!namep)
 295                 missarg("NAME");
 296         if (!threshsp && !gc_intp && !parms_change) {
 297                 fprintf(stderr, "Not enough information: changeable attributes required.\n");
 298                 exit(-1);
 299         }
 300
 301         if (parms_rta->rta_len > RTA_LENGTH(0)) {
 302                 addattr_l(&req.n, sizeof(req), NDTA_PARMS, RTA_DATA(parms_rta),
 303                           RTA_PAYLOAD(parms_rta));
 304         }
 305
 306         if (rtnl_talk(&rth, &req.n, NULL) < 0)
 307                 exit(2);
 308
 309         return 0;
 310 }
 311
 312 static const char *ntable_strtime_delta(__u32 msec)
 313 {
 314         static char str[32];
 315         struct timeval now = {};
 316         time_t t;
 317         struct tm *tp;
 318
 319         if (msec == 0)
 320                 goto error;
 321
 322         if (gettimeofday(&now, NULL) < 0) {
 323                 perror("gettimeofday");
 324                 goto error;
 325         }
 326
 327         t = now.tv_sec - (msec / 1000);
 328         tp = localtime(&t);
 329         if (!tp)
 330                 goto error;
 331
 332         strftime(str, sizeof(str), "%Y-%m-%d %T", tp);
 333
 334         return str;
 335  error:
 336         strcpy(str, "(error)");
 337         return str;
 338 }
 339
 340 static void print_ndtconfig(const struct ndt_config *ndtc)
 341 {
 342
 343         print_uint(PRINT_ANY, "key_length",
 344                    "    config key_len %u ", ndtc->ndtc_key_len);
 345         print_uint(PRINT_ANY, "entry_size",
 346                    "entry_size %u ", ndtc->ndtc_entry_size);
 347         print_uint(PRINT_ANY, "entries", "entries %u ", ndtc->ndtc_entries);
 348
 349         print_nl();
 350
 351         print_string(PRINT_ANY, "last_flush",
 352                      "        last_flush %s ",
 353                      ntable_strtime_delta(ndtc->ndtc_last_flush));
 354         print_string(PRINT_ANY, "last_rand",
 355                      "last_rand %s ",
 356                      ntable_strtime_delta(ndtc->ndtc_last_rand));
 357
 358         print_nl();
 359
 360         print_uint(PRINT_ANY, "hash_rnd",
 361                    "        hash_rnd %u ", ndtc->ndtc_hash_rnd);
 362         print_0xhex(PRINT_ANY, "hash_mask",
 363                     "hash_mask %08x ", ndtc->ndtc_hash_mask);
 364
 365         print_uint(PRINT_ANY, "hash_chain_gc",
 366                    "hash_chain_gc %u ", ndtc->ndtc_hash_chain_gc);
 367         print_uint(PRINT_ANY, "proxy_qlen",
 368                    "proxy_qlen %u ", ndtc->ndtc_proxy_qlen);
 369
 370         print_nl();
 371 }
 372
 373 static void print_ndtparams(struct rtattr *tpb[])
 374 {
 375
 376         if (tpb[NDTPA_IFINDEX]) {
 377                 __u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);
 378
 379                 print_string(PRINT_FP, NULL, "    dev ", NULL);
 380                 print_color_string(PRINT_ANY, COLOR_IFNAME,
 381                                    "dev", "%s ", ll_index_to_name(ifindex));
 382                 print_nl();
 383         }
 384
 385         print_string(PRINT_FP, NULL, "    ", NULL);
 386         if (tpb[NDTPA_REFCNT]) {
 387                 __u32 refcnt = rta_getattr_u32(tpb[NDTPA_REFCNT]);
 388
 389                 print_uint(PRINT_ANY, "refcnt", "refcnt %u ", refcnt);
 390         }
 391
 392         if (tpb[NDTPA_REACHABLE_TIME]) {
 393                 __u64 reachable = rta_getattr_u64(tpb[NDTPA_REACHABLE_TIME]);
 394
 395                 print_u64(PRINT_ANY, "reachable",
 396                            "reachable %llu ", reachable);
 397         }
 398
 399         if (tpb[NDTPA_BASE_REACHABLE_TIME]) {
 400                 __u64 breachable
 401                         = rta_getattr_u64(tpb[NDTPA_BASE_REACHABLE_TIME]);
 402
 403                 print_u64(PRINT_ANY, "base_reachable",
 404                            "base_reachable %llu ", breachable);
 405         }
 406
 407         if (tpb[NDTPA_RETRANS_TIME]) {
 408                 __u64 retrans = rta_getattr_u64(tpb[NDTPA_RETRANS_TIME]);
 409
 410                 print_u64(PRINT_ANY, "retrans", "retrans %llu ", retrans);
 411         }
 412
 413         print_string(PRINT_FP, NULL, "%s    ", _SL_);
 414
 415         if (tpb[NDTPA_GC_STALETIME]) {
 416                 __u64 gc_stale = rta_getattr_u64(tpb[NDTPA_GC_STALETIME]);
 417
 418                 print_u64(PRINT_ANY, "gc_stale", "gc_stale %llu ", gc_stale);
 419         }
 420
 421         if (tpb[NDTPA_DELAY_PROBE_TIME]) {
 422                 __u64 delay_probe
 423                         = rta_getattr_u64(tpb[NDTPA_DELAY_PROBE_TIME]);
 424
 425                 print_u64(PRINT_ANY, "delay_probe",
 426                            "delay_probe %llu ", delay_probe);
 427         }
 428
 429         if (tpb[NDTPA_QUEUE_LEN]) {
 430                 __u32 queue = rta_getattr_u32(tpb[NDTPA_QUEUE_LEN]);
 431
 432                 print_uint(PRINT_ANY, "queue", "queue %u ", queue);
 433         }
 434
 435         print_string(PRINT_FP, NULL, "%s    ", _SL_);
 436
 437         if (tpb[NDTPA_APP_PROBES]) {
 438                 __u32 aprobe = rta_getattr_u32(tpb[NDTPA_APP_PROBES]);
 439
 440                 print_uint(PRINT_ANY, "app_probes", "app_probes %u ", aprobe);
 441         }
 442
 443         if (tpb[NDTPA_UCAST_PROBES]) {
 444                 __u32 uprobe = rta_getattr_u32(tpb[NDTPA_UCAST_PROBES]);
 445
 446                 print_uint(PRINT_ANY, "ucast_probes",
 447                            "ucast_probes %u ", uprobe);
 448         }
 449
 450         if (tpb[NDTPA_MCAST_PROBES]) {
 451                 __u32 mprobe = rta_getattr_u32(tpb[NDTPA_MCAST_PROBES]);
 452
 453                 print_uint(PRINT_ANY, "mcast_probes",
 454                            "mcast_probes %u ", mprobe);
 455         }
 456
 457         print_string(PRINT_FP, NULL, "%s    ", _SL_);
 458
 459         if (tpb[NDTPA_ANYCAST_DELAY]) {
 460                 __u64 anycast_delay = rta_getattr_u64(tpb[NDTPA_ANYCAST_DELAY]);
 461
 462                 print_u64(PRINT_ANY, "anycast_delay",
 463                            "anycast_delay %llu ", anycast_delay);
 464         }
 465
 466         if (tpb[NDTPA_PROXY_DELAY]) {
 467                 __u64 proxy_delay = rta_getattr_u64(tpb[NDTPA_PROXY_DELAY]);
 468
 469                 print_u64(PRINT_ANY, "proxy_delay",
 470                            "proxy_delay %llu ", proxy_delay);
 471         }
 472
 473         if (tpb[NDTPA_PROXY_QLEN]) {
 474                 __u32 pqueue = rta_getattr_u32(tpb[NDTPA_PROXY_QLEN]);
 475
 476                 print_uint(PRINT_ANY, "proxy_queue", "proxy_queue %u ", pqueue);
 477         }
 478
 479         if (tpb[NDTPA_LOCKTIME]) {
 480                 __u64 locktime = rta_getattr_u64(tpb[NDTPA_LOCKTIME]);
 481
 482                 print_u64(PRINT_ANY, "locktime", "locktime %llu ", locktime);
 483         }
 484
 485         print_nl();
 486 }
 487
 488 static void print_ndtstats(const struct ndt_stats *ndts)
 489 {
 490
 491         print_string(PRINT_FP, NULL, "    stats ", NULL);
 492
 493         print_u64(PRINT_ANY, "allocs", "allocs %llu ", ndts->ndts_allocs);
 494         print_u64(PRINT_ANY, "destroys", "destroys %llu ",
 495                    ndts->ndts_destroys);
 496         print_u64(PRINT_ANY, "hash_grows", "hash_grows %llu ",
 497                    ndts->ndts_hash_grows);
 498
 499         print_string(PRINT_FP, NULL, "%s    ", _SL_);
 500
 501         print_u64(PRINT_ANY, "res_failed", "res_failed %llu ",
 502                    ndts->ndts_res_failed);
 503         print_u64(PRINT_ANY, "lookups", "lookups %llu ", ndts->ndts_lookups);
 504         print_u64(PRINT_ANY, "hits", "hits %llu ", ndts->ndts_hits);
 505
 506         print_string(PRINT_FP, NULL, "%s    ", _SL_);
 507
 508         print_u64(PRINT_ANY, "rcv_probes_mcast", "rcv_probes_mcast %llu ",
 509                    ndts->ndts_rcv_probes_mcast);
 510         print_u64(PRINT_ANY, "rcv_probes_ucast", "rcv_probes_ucast %llu ",
 511                    ndts->ndts_rcv_probes_ucast);
 512
 513         print_string(PRINT_FP, NULL, "%s    ", _SL_);
 514
 515         print_u64(PRINT_ANY, "periodic_gc_runs", "periodic_gc_runs %llu ",
 516                    ndts->ndts_periodic_gc_runs);
 517         print_u64(PRINT_ANY, "forced_gc_runs", "forced_gc_runs %llu ",
 518                    ndts->ndts_forced_gc_runs);
 519
 520         print_nl();
 521 }
 522
 523 static int print_ntable(const struct sockaddr_nl *who,
 524                         struct nlmsghdr *n, void *arg)
 525 {
 526         FILE *fp = (FILE *)arg;
 527         struct ndtmsg *ndtm = NLMSG_DATA(n);
 528         int len = n->nlmsg_len;
 529         struct rtattr *tb[NDTA_MAX+1];
 530         struct rtattr *tpb[NDTPA_MAX+1];
 531         int ret;
 532
 533         if (n->nlmsg_type != RTM_NEWNEIGHTBL) {
 534                 fprintf(stderr, "Not NEIGHTBL: %08x %08x %08x\n",
 535                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 536                 return 0;
 537         }
 538         len -= NLMSG_LENGTH(sizeof(*ndtm));
 539         if (len < 0) {
 540                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 541                 return -1;
 542         }
 543
 544         if (preferred_family && preferred_family != ndtm->ndtm_family)
 545                 return 0;
 546
 547         parse_rtattr(tb, NDTA_MAX, NDTA_RTA(ndtm),
 548                      n->nlmsg_len - NLMSG_LENGTH(sizeof(*ndtm)));
 549
 550         if (tb[NDTA_NAME]) {
 551                 const char *name = rta_getattr_str(tb[NDTA_NAME]);
 552
 553                 if (filter.name && strcmp(filter.name, name))
 554                         return 0;
 555         }
 556
 557         if (tb[NDTA_PARMS]) {
 558                 parse_rtattr(tpb, NDTPA_MAX, RTA_DATA(tb[NDTA_PARMS]),
 559                              RTA_PAYLOAD(tb[NDTA_PARMS]));
 560
 561                 if (tpb[NDTPA_IFINDEX]) {
 562                         __u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);
 563
 564                         if (filter.index && filter.index != ifindex)
 565                                 return 0;
 566                 } else {
 567                         if (filter.index && filter.index != NONE_DEV)
 568                                 return 0;
 569                 }
 570         }
 571
 572         open_json_object(NULL);
 573         print_string(PRINT_ANY, "family",
 574                      "%s ", family_name(ndtm->ndtm_family));
 575
 576         if (tb[NDTA_NAME]) {
 577                 const char *name = rta_getattr_str(tb[NDTA_NAME]);
 578
 579                 print_string(PRINT_ANY, "name", "%s ", name);
 580         }
 581
 582         print_nl();
 583
 584         ret = (tb[NDTA_THRESH1] || tb[NDTA_THRESH2] || tb[NDTA_THRESH3] ||
 585                tb[NDTA_GC_INTERVAL]);
 586         if (ret)
 587                 print_string(PRINT_FP, NULL, "    ", NULL);
 588
 589         if (tb[NDTA_THRESH1]) {
 590                 __u32 thresh1 = rta_getattr_u32(tb[NDTA_THRESH1]);
 591
 592                 print_uint(PRINT_ANY, "thresh1", "thresh1 %u ", thresh1);
 593         }
 594
 595         if (tb[NDTA_THRESH2]) {
 596                 __u32 thresh2 = rta_getattr_u32(tb[NDTA_THRESH2]);
 597
 598                 print_uint(PRINT_ANY, "thresh2", "thresh2 %u ", thresh2);
 599         }
 600
 601         if (tb[NDTA_THRESH3]) {
 602                 __u32 thresh3 = rta_getattr_u32(tb[NDTA_THRESH3]);
 603
 604                 print_uint(PRINT_ANY, "thresh3", "thresh3 %u ", thresh3);
 605         }
 606
 607         if (tb[NDTA_GC_INTERVAL]) {
 608                 __u64 gc_int = rta_getattr_u64(tb[NDTA_GC_INTERVAL]);
 609
 610                 print_u64(PRINT_ANY, "gc_interval", "gc_int %llu ", gc_int);
 611         }
 612
 613         if (ret)
 614                 print_nl();
 615
 616         if (tb[NDTA_CONFIG] && show_stats)
 617                 print_ndtconfig(RTA_DATA(tb[NDTA_CONFIG]));
 618
 619         if (tb[NDTA_PARMS])
 620                 print_ndtparams(tpb);
 621
 622         if (tb[NDTA_STATS] && show_stats)
 623                 print_ndtstats(RTA_DATA(tb[NDTA_STATS]));
 624
 625         print_string(PRINT_FP, NULL, "\n", "");
 626         close_json_object();
 627         fflush(fp);
 628
 629         return 0;
 630 }
 631
 632 static void ipntable_reset_filter(void)
 633 {
 634         memset(&filter, 0, sizeof(filter));
 635 }
 636
 637 static int ipntable_show(int argc, char **argv)
 638 {
 639         ipntable_reset_filter();
 640
 641         filter.family = preferred_family;
 642
 643         while (argc > 0) {
 644                 if (strcmp(*argv, "dev") == 0) {
 645                         NEXT_ARG();
 646
 647                         if (strcmp("none", *argv) == 0)
 648                                 filter.index = NONE_DEV;
 649                         else if ((filter.index = ll_name_to_index(*argv)) == 0)
 650                                 invarg("\"DEV\" is invalid", *argv);
 651                 } else if (strcmp(*argv, "name") == 0) {
 652                         NEXT_ARG();
 653
 654                         filter.name = *argv;
 655                 } else
 656                         invarg("unknown", *argv);
 657
 658                 argc--; argv++;
 659         }
 660
 661         if (rtnl_neightbldump_req(&rth, preferred_family) < 0) {
 662                 perror("Cannot send dump request");
 663                 exit(1);
 664         }
 665
 666         new_json_obj(json);
 667         if (rtnl_dump_filter(&rth, print_ntable, stdout) < 0) {
 668                 fprintf(stderr, "Dump terminated\n");
 669                 exit(1);
 670         }
 671         delete_json_obj();
 672
 673         return 0;
 674 }
 675
 676 int do_ipntable(int argc, char **argv)
 677 {
 678         ll_init_map(&rth);
 679
 680         if (argc > 0) {
 681                 if (matches(*argv, "change") == 0 ||
 682                     matches(*argv, "chg") == 0)
 683                         return ipntable_modify(RTM_SETNEIGHTBL,
 684                                                NLM_F_REPLACE,
 685                                                argc-1, argv+1);
 686                 if (matches(*argv, "show") == 0 ||
 687                     matches(*argv, "lst") == 0 ||
 688                     matches(*argv, "list") == 0)
 689                         return ipntable_show(argc-1, argv+1);
 690                 if (matches(*argv, "help") == 0)
 691                         usage();
 692         } else
 693                 return ipntable_show(0, NULL);
 694
 695         fprintf(stderr, "Command \"%s\" is unknown, try \"ip ntable help\".\n", *argv);
 696         exit(-1);
 697 }