zebra/zebra_pbr.c

   1 /* Zebra Policy Based Routing (PBR) main handling.
   2  * Copyright (C) 2018  Cumulus Networks, Inc.
   3  *
   4  * This file is part of FRR.
   5  *
   6  * FRR is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * FRR is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with FRR; see the file COPYING.  If not, write to the Free
  18  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  19  * 02111-1307, USA.
  20  */
  21
  22 #include <zebra.h>
  23
  24 #include <jhash.h>
  25 #include <hash.h>
  26 #include <memory.h>
  27 #include <hook.h>
  28
  29 #include "zebra/zebra_router.h"
  30 #include "zebra/zebra_pbr.h"
  31 #include "zebra/rt.h"
  32 #include "zebra/zapi_msg.h"
  33 #include "zebra/zebra_memory.h"
  34 #include "zebra/zserv.h"
  35
  36 /* definitions */
  37 DEFINE_MTYPE_STATIC(ZEBRA, PBR_IPTABLE_IFNAME, "PBR interface list")
  38
  39 /* definitions */
  40 static const struct message ipset_type_msg[] = {
  41         {IPSET_NET_PORT_NET, "net,port,net"},
  42         {IPSET_NET_PORT, "net,port"},
  43         {IPSET_NET_NET, "net,net"},
  44         {IPSET_NET, "net"},
  45         {0}
  46 };
  47
  48 const struct message icmp_typecode_str[] = {
  49         { 0 << 8, "echo-reply"},
  50         { 0 << 8, "pong"},
  51         { 3 << 8, "network-unreachable"},
  52         { (3 << 8) + 1, "host-unreachable"},
  53         { (3 << 8) + 2, "protocol-unreachable"},
  54         { (3 << 8) + 3, "port-unreachable"},
  55         { (3 << 8) + 4, "fragmentation-needed"},
  56         { (3 << 8) + 5, "source-route-failed"},
  57         { (3 << 8) + 6, "network-unknown"},
  58         { (3 << 8) + 7, "host-unknown"},
  59         { (3 << 8) + 9, "network-prohibited"},
  60         { (3 << 8) + 10, "host-prohibited"},
  61         { (3 << 8) + 11, "TOS-network-unreachable"},
  62         { (3 << 8) + 12, "TOS-host-unreachable"},
  63         { (3 << 8) + 13, "communication-prohibited"},
  64         { (3 << 8) + 14, "host-precedence-violation"},
  65         { (3 << 8) + 15, "precedence-cutoff"},
  66         { 4 << 8, "source-quench"},
  67         { 5 << 8, "network-redirect"},
  68         { (5 << 8) +  1, "host-redirect"},
  69         { (5 << 8) +  2, "TOS-network-redirect"},
  70         { (5 << 8) +  3, "TOS-host-redirect"},
  71         { 8 << 8, "echo-request"},
  72         { 8 << 8, "ping"},
  73         { 9 << 8, "router-advertisement"},
  74         { 10 << 8, "router-solicitation"},
  75         { 11 << 8, "ttl-zero-during-transit"},
  76         { (11 << 8) + 1, "ttl-zero-during-reassembly"},
  77         { 12 << 8, "ip-header-bad"},
  78         { (12 << 8) + 1, "required-option-missing"},
  79         { 13 << 8, "timestamp-request"},
  80         { 14 << 8, "timestamp-reply"},
  81         { 17 << 8, "address-mask-request"},
  82         { 18 << 8, "address-mask-reply"},
  83         {0}
  84 };
  85
  86 /* definitions */
  87 static const struct message tcp_value_str[] = {
  88         {TCP_HEADER_FIN, "FIN"},
  89         {TCP_HEADER_SYN, "SYN"},
  90         {TCP_HEADER_RST, "RST"},
  91         {TCP_HEADER_PSH, "PSH"},
  92         {TCP_HEADER_ACK, "ACK"},
  93         {TCP_HEADER_URG, "URG"},
  94         {0}
  95 };
  96
  97 static const struct message fragment_value_str[] = {
  98         {1, "dont-fragment"},
  99         {2, "is-fragment"},
 100         {4, "first-fragment"},
 101         {8, "last-fragment"},
 102         {0}
 103 };
 104
 105 /* static function declarations */
 106 DEFINE_HOOK(zebra_pbr_ipset_entry_get_stat,
 107             (struct zebra_pbr_ipset_entry *ipset, uint64_t *pkts,
 108              uint64_t *bytes),
 109             (ipset, pkts, bytes))
 110
 111 DEFINE_HOOK(zebra_pbr_iptable_get_stat,
 112             (struct zebra_pbr_iptable *iptable, uint64_t *pkts,
 113              uint64_t *bytes),
 114             (iptable, pkts, bytes))
 115
 116 DEFINE_HOOK(zebra_pbr_iptable_update,
 117             (int cmd, struct zebra_pbr_iptable *iptable), (cmd, iptable));
 118
 119 DEFINE_HOOK(zebra_pbr_ipset_entry_update,
 120             (int cmd, struct zebra_pbr_ipset_entry *ipset), (cmd, ipset));
 121
 122 DEFINE_HOOK(zebra_pbr_ipset_update,
 123             (int cmd, struct zebra_pbr_ipset *ipset), (cmd, ipset));
 124
 125 /* Private functions */
 126
 127 /* Public functions */
 128 void zebra_pbr_rules_free(void *arg)
 129 {
 130         struct zebra_pbr_rule *rule;
 131
 132         rule = (struct zebra_pbr_rule *)arg;
 133
 134         (void)kernel_del_pbr_rule(rule);
 135         XFREE(MTYPE_TMP, rule);
 136 }
 137
 138 uint32_t zebra_pbr_rules_hash_key(const void *arg)
 139 {
 140         const struct zebra_pbr_rule *rule;
 141         uint32_t key;
 142
 143         rule = arg;
 144         key = jhash_3words(rule->rule.seq, rule->rule.priority,
 145                            rule->rule.action.table,
 146                            prefix_hash_key(&rule->rule.filter.src_ip));
 147
 148         if (rule->rule.filter.fwmark)
 149                 key = jhash_3words(rule->rule.filter.fwmark, rule->vrf_id,
 150                                    rule->rule.ifindex, key);
 151         else
 152                 key = jhash_2words(rule->vrf_id, rule->rule.ifindex, key);
 153
 154         return jhash_3words(rule->rule.filter.src_port,
 155                             rule->rule.filter.dst_port,
 156                             prefix_hash_key(&rule->rule.filter.dst_ip),
 157                             jhash_1word(rule->rule.unique, key));
 158 }
 159
 160 bool zebra_pbr_rules_hash_equal(const void *arg1, const void *arg2)
 161 {
 162         const struct zebra_pbr_rule *r1, *r2;
 163
 164         r1 = (const struct zebra_pbr_rule *)arg1;
 165         r2 = (const struct zebra_pbr_rule *)arg2;
 166
 167         if (r1->rule.seq != r2->rule.seq)
 168                 return false;
 169
 170         if (r1->rule.priority != r2->rule.priority)
 171                 return false;
 172
 173         if (r1->rule.unique != r2->rule.unique)
 174                 return false;
 175
 176         if (r1->rule.action.table != r2->rule.action.table)
 177                 return false;
 178
 179         if (r1->rule.filter.src_port != r2->rule.filter.src_port)
 180                 return false;
 181
 182         if (r1->rule.filter.dst_port != r2->rule.filter.dst_port)
 183                 return false;
 184
 185         if (r1->rule.filter.fwmark != r2->rule.filter.fwmark)
 186                 return false;
 187
 188         if (!prefix_same(&r1->rule.filter.src_ip, &r2->rule.filter.src_ip))
 189                 return false;
 190
 191         if (!prefix_same(&r1->rule.filter.dst_ip, &r2->rule.filter.dst_ip))
 192                 return false;
 193
 194         if (r1->rule.ifindex != r2->rule.ifindex)
 195                 return false;
 196
 197         if (r1->vrf_id != r2->vrf_id)
 198                 return false;
 199
 200         return true;
 201 }
 202
 203 struct pbr_rule_unique_lookup {
 204         struct zebra_pbr_rule *rule;
 205         uint32_t unique;
 206         ifindex_t ifindex;
 207         vrf_id_t vrf_id;
 208 };
 209
 210 static int pbr_rule_lookup_unique_walker(struct hash_bucket *b, void *data)
 211 {
 212         struct pbr_rule_unique_lookup *pul = data;
 213         struct zebra_pbr_rule *rule = b->data;
 214
 215         if (pul->unique == rule->rule.unique
 216             && pul->ifindex == rule->rule.ifindex
 217             && pul->vrf_id == rule->vrf_id) {
 218                 pul->rule = rule;
 219                 return HASHWALK_ABORT;
 220         }
 221
 222         return HASHWALK_CONTINUE;
 223 }
 224
 225 static struct zebra_pbr_rule *
 226 pbr_rule_lookup_unique(struct zebra_pbr_rule *zrule)
 227 {
 228         struct pbr_rule_unique_lookup pul;
 229
 230         pul.unique = zrule->rule.unique;
 231         pul.ifindex = zrule->rule.ifindex;
 232         pul.rule = NULL;
 233         pul.vrf_id = zrule->vrf_id;
 234         hash_walk(zrouter.rules_hash, &pbr_rule_lookup_unique_walker, &pul);
 235
 236         return pul.rule;
 237 }
 238
 239 void zebra_pbr_ipset_free(void *arg)
 240 {
 241         struct zebra_pbr_ipset *ipset;
 242
 243         ipset = (struct zebra_pbr_ipset *)arg;
 244         hook_call(zebra_pbr_ipset_update, 0, ipset);
 245         XFREE(MTYPE_TMP, ipset);
 246 }
 247
 248 uint32_t zebra_pbr_ipset_hash_key(const void *arg)
 249 {
 250         const struct zebra_pbr_ipset *ipset = arg;
 251         uint32_t *pnt = (uint32_t *)&ipset->ipset_name;
 252         uint32_t key = jhash_1word(ipset->vrf_id, 0x63ab42de);
 253
 254         return jhash2(pnt, ZEBRA_IPSET_NAME_HASH_SIZE, key);
 255 }
 256
 257 bool zebra_pbr_ipset_hash_equal(const void *arg1, const void *arg2)
 258 {
 259         const struct zebra_pbr_ipset *r1, *r2;
 260
 261         r1 = (const struct zebra_pbr_ipset *)arg1;
 262         r2 = (const struct zebra_pbr_ipset *)arg2;
 263
 264         if (r1->type != r2->type)
 265                 return false;
 266         if (r1->unique != r2->unique)
 267                 return false;
 268         if (r1->vrf_id != r2->vrf_id)
 269                 return false;
 270
 271         if (strncmp(r1->ipset_name, r2->ipset_name,
 272                     ZEBRA_IPSET_NAME_SIZE))
 273                 return false;
 274         return true;
 275 }
 276
 277 void zebra_pbr_ipset_entry_free(void *arg)
 278 {
 279         struct zebra_pbr_ipset_entry *ipset;
 280
 281         ipset = (struct zebra_pbr_ipset_entry *)arg;
 282
 283         hook_call(zebra_pbr_ipset_entry_update, 0, ipset);
 284
 285         XFREE(MTYPE_TMP, ipset);
 286 }
 287
 288 uint32_t zebra_pbr_ipset_entry_hash_key(const void *arg)
 289 {
 290         const struct zebra_pbr_ipset_entry *ipset;
 291         uint32_t key;
 292
 293         ipset = arg;
 294         key = prefix_hash_key(&ipset->src);
 295         key = jhash_1word(ipset->unique, key);
 296         key = jhash_1word(prefix_hash_key(&ipset->dst), key);
 297         key = jhash(&ipset->dst_port_min, 2, key);
 298         key = jhash(&ipset->dst_port_max, 2, key);
 299         key = jhash(&ipset->src_port_min, 2, key);
 300         key = jhash(&ipset->src_port_max, 2, key);
 301         key = jhash(&ipset->proto, 1, key);
 302
 303         return key;
 304 }
 305
 306 bool zebra_pbr_ipset_entry_hash_equal(const void *arg1, const void *arg2)
 307 {
 308         const struct zebra_pbr_ipset_entry *r1, *r2;
 309
 310         r1 = (const struct zebra_pbr_ipset_entry *)arg1;
 311         r2 = (const struct zebra_pbr_ipset_entry *)arg2;
 312
 313         if (r1->unique != r2->unique)
 314                 return false;
 315
 316         if (!prefix_same(&r1->src, &r2->src))
 317                 return false;
 318
 319         if (!prefix_same(&r1->dst, &r2->dst))
 320                 return false;
 321
 322         if (r1->src_port_min != r2->src_port_min)
 323                 return false;
 324
 325         if (r1->src_port_max != r2->src_port_max)
 326                 return false;
 327
 328         if (r1->dst_port_min != r2->dst_port_min)
 329                 return false;
 330
 331         if (r1->dst_port_max != r2->dst_port_max)
 332                 return false;
 333
 334         if (r1->proto != r2->proto)
 335                 return false;
 336         return true;
 337 }
 338
 339 void zebra_pbr_iptable_free(void *arg)
 340 {
 341         struct zebra_pbr_iptable *iptable;
 342         struct listnode *node, *nnode;
 343         char *name;
 344
 345         iptable = (struct zebra_pbr_iptable *)arg;
 346         hook_call(zebra_pbr_iptable_update, 0, iptable);
 347
 348         if (iptable->interface_name_list) {
 349                 for (ALL_LIST_ELEMENTS(iptable->interface_name_list, node,
 350                                        nnode, name)) {
 351                         XFREE(MTYPE_PBR_IPTABLE_IFNAME, name);
 352                         list_delete_node(iptable->interface_name_list, node);
 353                 }
 354                 list_delete(&iptable->interface_name_list);
 355         }
 356         XFREE(MTYPE_TMP, iptable);
 357 }
 358
 359 uint32_t zebra_pbr_iptable_hash_key(const void *arg)
 360 {
 361         const struct zebra_pbr_iptable *iptable = arg;
 362         uint32_t *pnt = (uint32_t *)&(iptable->ipset_name);
 363         uint32_t key;
 364
 365         key = jhash2(pnt, ZEBRA_IPSET_NAME_HASH_SIZE,
 366                      0x63ab42de);
 367         key = jhash_1word(iptable->fwmark, key);
 368         key = jhash_1word(iptable->pkt_len_min, key);
 369         key = jhash_1word(iptable->pkt_len_max, key);
 370         key = jhash_1word(iptable->tcp_flags, key);
 371         key = jhash_1word(iptable->tcp_mask_flags, key);
 372         key = jhash_1word(iptable->dscp_value, key);
 373         key = jhash_1word(iptable->protocol, key);
 374         key = jhash_1word(iptable->fragment, key);
 375         key = jhash_1word(iptable->vrf_id, key);
 376
 377         return jhash_3words(iptable->filter_bm, iptable->type,
 378                             iptable->unique, key);
 379 }
 380
 381 bool zebra_pbr_iptable_hash_equal(const void *arg1, const void *arg2)
 382 {
 383         const struct zebra_pbr_iptable *r1, *r2;
 384
 385         r1 = (const struct zebra_pbr_iptable *)arg1;
 386         r2 = (const struct zebra_pbr_iptable *)arg2;
 387
 388         if (r1->vrf_id != r2->vrf_id)
 389                 return false;
 390         if (r1->type != r2->type)
 391                 return false;
 392         if (r1->unique != r2->unique)
 393                 return false;
 394         if (r1->filter_bm != r2->filter_bm)
 395                 return false;
 396         if (r1->fwmark != r2->fwmark)
 397                 return false;
 398         if (r1->action != r2->action)
 399                 return false;
 400         if (strncmp(r1->ipset_name, r2->ipset_name,
 401                     ZEBRA_IPSET_NAME_SIZE))
 402                 return false;
 403         if (r1->pkt_len_min != r2->pkt_len_min)
 404                 return false;
 405         if (r1->pkt_len_max != r2->pkt_len_max)
 406                 return false;
 407         if (r1->tcp_flags != r2->tcp_flags)
 408                 return false;
 409         if (r1->tcp_mask_flags != r2->tcp_mask_flags)
 410                 return false;
 411         if (r1->dscp_value != r2->dscp_value)
 412                 return false;
 413         if (r1->fragment != r2->fragment)
 414                 return false;
 415         if (r1->protocol != r2->protocol)
 416                 return false;
 417         return true;
 418 }
 419
 420 static void *pbr_rule_alloc_intern(void *arg)
 421 {
 422         struct zebra_pbr_rule *zpr;
 423         struct zebra_pbr_rule *new;
 424
 425         zpr = (struct zebra_pbr_rule *)arg;
 426
 427         new = XCALLOC(MTYPE_TMP, sizeof(*new));
 428
 429         memcpy(new, zpr, sizeof(*zpr));
 430
 431         return new;
 432 }
 433
 434 static int pbr_rule_release(struct zebra_pbr_rule *rule)
 435 {
 436         struct zebra_pbr_rule *lookup;
 437
 438         lookup = hash_lookup(zrouter.rules_hash, rule);
 439
 440         if (!lookup)
 441                 return -ENOENT;
 442
 443         hash_release(zrouter.rules_hash, lookup);
 444         XFREE(MTYPE_TMP, lookup);
 445
 446         return 0;
 447 }
 448
 449 void zebra_pbr_add_rule(struct zebra_pbr_rule *rule)
 450 {
 451         struct zebra_pbr_rule *found;
 452
 453         /**
 454          * Check if we already have it (this checks via a unique ID, walking
 455          * over the hash table, not via a hash operation).
 456          */
 457         found = pbr_rule_lookup_unique(rule);
 458
 459         (void)hash_get(zrouter.rules_hash, rule, pbr_rule_alloc_intern);
 460
 461         /* If found, this is an update */
 462         if (found) {
 463                 (void)kernel_update_pbr_rule(found, rule);
 464
 465                 if (pbr_rule_release(found))
 466                         zlog_debug(
 467                                 "%s: Rule being updated we know nothing about",
 468                                 __PRETTY_FUNCTION__);
 469
 470         } else
 471                 (void)kernel_add_pbr_rule(rule);
 472 }
 473
 474 void zebra_pbr_del_rule(struct zebra_pbr_rule *rule)
 475 {
 476         (void)kernel_del_pbr_rule(rule);
 477
 478         if (pbr_rule_release(rule))
 479                 zlog_debug("%s: Rule being deleted we know nothing about",
 480                            __func__);
 481 }
 482
 483 static void zebra_pbr_cleanup_rules(struct hash_bucket *b, void *data)
 484 {
 485         struct zebra_pbr_rule *rule = b->data;
 486         int *sock = data;
 487
 488         if (rule->sock == *sock) {
 489                 (void)kernel_del_pbr_rule(rule);
 490                 if (hash_release(zrouter.rules_hash, rule))
 491                         XFREE(MTYPE_TMP, rule);
 492                 else
 493                         zlog_debug(
 494                                 "%s: Rule seq: %u is being cleaned but we can't find it in our tables",
 495                                 __func__, rule->rule.seq);
 496         }
 497 }
 498
 499 static void zebra_pbr_cleanup_ipset(struct hash_bucket *b, void *data)
 500 {
 501         struct zebra_pbr_ipset *ipset = b->data;
 502         int *sock = data;
 503
 504         if (ipset->sock == *sock) {
 505                 if (hash_release(zrouter.ipset_hash, ipset))
 506                         zebra_pbr_ipset_free(ipset);
 507                 else
 508                         hook_call(zebra_pbr_ipset_update, 0, ipset);
 509         }
 510 }
 511
 512 static void zebra_pbr_cleanup_ipset_entry(struct hash_bucket *b, void *data)
 513 {
 514         struct zebra_pbr_ipset_entry *ipset = b->data;
 515         int *sock = data;
 516
 517         if (ipset->sock == *sock) {
 518                 if (hash_release(zrouter.ipset_entry_hash, ipset))
 519                         zebra_pbr_ipset_entry_free(ipset);
 520                 else
 521                         hook_call(zebra_pbr_ipset_entry_update, 0, ipset);
 522         }
 523 }
 524
 525 static void zebra_pbr_cleanup_iptable(struct hash_bucket *b, void *data)
 526 {
 527         struct zebra_pbr_iptable *iptable = b->data;
 528         int *sock = data;
 529
 530         if (iptable->sock == *sock) {
 531                 if (hash_release(zrouter.iptable_hash, iptable))
 532                         zebra_pbr_iptable_free(iptable);
 533                 else
 534                         hook_call(zebra_pbr_iptable_update, 0, iptable);
 535         }
 536 }
 537
 538 static int zebra_pbr_client_close_cleanup(struct zserv *client)
 539 {
 540         int sock = client->sock;
 541
 542         if (!sock)
 543                 return 0;
 544         hash_iterate(zrouter.rules_hash, zebra_pbr_cleanup_rules, &sock);
 545         hash_iterate(zrouter.iptable_hash, zebra_pbr_cleanup_iptable, &sock);
 546         hash_iterate(zrouter.ipset_entry_hash, zebra_pbr_cleanup_ipset_entry,
 547                      &sock);
 548         hash_iterate(zrouter.ipset_hash, zebra_pbr_cleanup_ipset, &sock);
 549         return 1;
 550 }
 551
 552 void zebra_pbr_init(void)
 553 {
 554         hook_register(zserv_client_close, zebra_pbr_client_close_cleanup);
 555 }
 556
 557 static void *pbr_ipset_alloc_intern(void *arg)
 558 {
 559         struct zebra_pbr_ipset *zpi;
 560         struct zebra_pbr_ipset *new;
 561
 562         zpi = (struct zebra_pbr_ipset *)arg;
 563
 564         new = XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_ipset));
 565
 566         memcpy(new, zpi, sizeof(*zpi));
 567
 568         return new;
 569 }
 570
 571 void zebra_pbr_create_ipset(struct zebra_pbr_ipset *ipset)
 572 {
 573         int ret;
 574
 575         (void)hash_get(zrouter.ipset_hash, ipset, pbr_ipset_alloc_intern);
 576         ret = hook_call(zebra_pbr_ipset_update, 1, ipset);
 577         kernel_pbr_ipset_add_del_status(ipset,
 578                                         ret ? ZEBRA_DPLANE_INSTALL_SUCCESS
 579                                         : ZEBRA_DPLANE_INSTALL_FAILURE);
 580 }
 581
 582 void zebra_pbr_destroy_ipset(struct zebra_pbr_ipset *ipset)
 583 {
 584         struct zebra_pbr_ipset *lookup;
 585
 586         lookup = hash_lookup(zrouter.ipset_hash, ipset);
 587         hook_call(zebra_pbr_ipset_update, 0, ipset);
 588         if (lookup) {
 589                 hash_release(zrouter.ipset_hash, lookup);
 590                 XFREE(MTYPE_TMP, lookup);
 591         } else
 592                 zlog_debug(
 593                         "%s: IPSet Entry being deleted we know nothing about",
 594                         __func__);
 595 }
 596
 597 struct pbr_ipset_name_lookup {
 598         struct zebra_pbr_ipset *ipset;
 599         char ipset_name[ZEBRA_IPSET_NAME_SIZE];
 600 };
 601
 602 const char *zebra_pbr_ipset_type2str(uint32_t type)
 603 {
 604         return lookup_msg(ipset_type_msg, type,
 605                           "Unrecognized IPset Type");
 606 }
 607
 608 static int zebra_pbr_ipset_pername_walkcb(struct hash_bucket *bucket, void *arg)
 609 {
 610         struct pbr_ipset_name_lookup *pinl =
 611                 (struct pbr_ipset_name_lookup *)arg;
 612         struct zebra_pbr_ipset *zpi = (struct zebra_pbr_ipset *)bucket->data;
 613
 614         if (!strncmp(pinl->ipset_name, zpi->ipset_name,
 615                      ZEBRA_IPSET_NAME_SIZE)) {
 616                 pinl->ipset = zpi;
 617                 return HASHWALK_ABORT;
 618         }
 619         return HASHWALK_CONTINUE;
 620 }
 621
 622 struct zebra_pbr_ipset *zebra_pbr_lookup_ipset_pername(char *ipsetname)
 623 {
 624         struct pbr_ipset_name_lookup pinl;
 625         struct pbr_ipset_name_lookup *ptr = &pinl;
 626
 627         if (!ipsetname)
 628                 return NULL;
 629         memset(ptr, 0, sizeof(struct pbr_ipset_name_lookup));
 630         snprintf((char *)ptr->ipset_name, ZEBRA_IPSET_NAME_SIZE, "%s",
 631                 ipsetname);
 632         hash_walk(zrouter.ipset_hash, zebra_pbr_ipset_pername_walkcb, ptr);
 633         return ptr->ipset;
 634 }
 635
 636 static void *pbr_ipset_entry_alloc_intern(void *arg)
 637 {
 638         struct zebra_pbr_ipset_entry *zpi;
 639         struct zebra_pbr_ipset_entry *new;
 640
 641         zpi = (struct zebra_pbr_ipset_entry *)arg;
 642
 643         new = XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_ipset_entry));
 644
 645         memcpy(new, zpi, sizeof(*zpi));
 646
 647         return new;
 648 }
 649
 650 void zebra_pbr_add_ipset_entry(struct zebra_pbr_ipset_entry *ipset)
 651 {
 652         int ret;
 653
 654         (void)hash_get(zrouter.ipset_entry_hash, ipset,
 655                        pbr_ipset_entry_alloc_intern);
 656         ret = hook_call(zebra_pbr_ipset_entry_update, 1, ipset);
 657         kernel_pbr_ipset_entry_add_del_status(ipset,
 658                                         ret ? ZEBRA_DPLANE_INSTALL_SUCCESS
 659                                         : ZEBRA_DPLANE_INSTALL_FAILURE);
 660 }
 661
 662 void zebra_pbr_del_ipset_entry(struct zebra_pbr_ipset_entry *ipset)
 663 {
 664         struct zebra_pbr_ipset_entry *lookup;
 665
 666         lookup = hash_lookup(zrouter.ipset_entry_hash, ipset);
 667         hook_call(zebra_pbr_ipset_entry_update, 0, ipset);
 668         if (lookup) {
 669                 hash_release(zrouter.ipset_entry_hash, lookup);
 670                 XFREE(MTYPE_TMP, lookup);
 671         } else
 672                 zlog_debug("%s: IPSet being deleted we know nothing about",
 673                            __func__);
 674 }
 675
 676 static void *pbr_iptable_alloc_intern(void *arg)
 677 {
 678         struct zebra_pbr_iptable *zpi;
 679         struct zebra_pbr_iptable *new;
 680         struct listnode *ln;
 681         char *ifname;
 682
 683         zpi = (struct zebra_pbr_iptable *)arg;
 684
 685         new = XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_iptable));
 686
 687         /* Deep structure copy */
 688         memcpy(new, zpi, sizeof(*zpi));
 689         new->interface_name_list = list_new();
 690
 691         if (zpi->interface_name_list) {
 692                 for (ALL_LIST_ELEMENTS_RO(zpi->interface_name_list, ln, ifname))
 693                         listnode_add(new->interface_name_list,
 694                                      XSTRDUP(MTYPE_PBR_IPTABLE_IFNAME, ifname));
 695         }
 696
 697         return new;
 698 }
 699
 700 void zebra_pbr_add_iptable(struct zebra_pbr_iptable *iptable)
 701 {
 702         int ret;
 703
 704         (void)hash_get(zrouter.iptable_hash, iptable, pbr_iptable_alloc_intern);
 705         ret = hook_call(zebra_pbr_iptable_update, 1, iptable);
 706         kernel_pbr_iptable_add_del_status(iptable,
 707                                           ret ? ZEBRA_DPLANE_INSTALL_SUCCESS
 708                                           : ZEBRA_DPLANE_INSTALL_FAILURE);
 709 }
 710
 711 void zebra_pbr_del_iptable(struct zebra_pbr_iptable *iptable)
 712 {
 713         struct zebra_pbr_iptable *lookup;
 714
 715         lookup = hash_lookup(zrouter.iptable_hash, iptable);
 716         hook_call(zebra_pbr_iptable_update, 0, iptable);
 717         if (lookup) {
 718                 struct listnode *node, *nnode;
 719                 char *name;
 720
 721                 hash_release(zrouter.iptable_hash, lookup);
 722                 for (ALL_LIST_ELEMENTS(iptable->interface_name_list,
 723                                        node, nnode, name)) {
 724                         XFREE(MTYPE_PBR_IPTABLE_IFNAME, name);
 725                         list_delete_node(iptable->interface_name_list,
 726                                          node);
 727                 }
 728                 list_delete(&iptable->interface_name_list);
 729                 XFREE(MTYPE_TMP, lookup);
 730         } else
 731                 zlog_debug("%s: IPTable being deleted we know nothing about",
 732                            __func__);
 733 }
 734
 735 /*
 736  * Handle success or failure of rule (un)install in the kernel.
 737  */
 738 void kernel_pbr_rule_add_del_status(struct zebra_pbr_rule *rule,
 739                                     enum zebra_dplane_status res)
 740 {
 741         switch (res) {
 742         case ZEBRA_DPLANE_INSTALL_SUCCESS:
 743                 zsend_rule_notify_owner(rule, ZAPI_RULE_INSTALLED);
 744                 break;
 745         case ZEBRA_DPLANE_INSTALL_FAILURE:
 746                 zsend_rule_notify_owner(rule, ZAPI_RULE_FAIL_INSTALL);
 747                 break;
 748         case ZEBRA_DPLANE_DELETE_SUCCESS:
 749                 zsend_rule_notify_owner(rule, ZAPI_RULE_REMOVED);
 750                 break;
 751         case ZEBRA_DPLANE_DELETE_FAILURE:
 752                 zsend_rule_notify_owner(rule, ZAPI_RULE_FAIL_REMOVE);
 753                 break;
 754         case ZEBRA_DPLANE_STATUS_NONE:
 755                 break;
 756         }
 757 }
 758
 759 /*
 760  * Handle success or failure of ipset (un)install in the kernel.
 761  */
 762 void kernel_pbr_ipset_add_del_status(struct zebra_pbr_ipset *ipset,
 763                                     enum zebra_dplane_status res)
 764 {
 765         switch (res) {
 766         case ZEBRA_DPLANE_INSTALL_SUCCESS:
 767                 zsend_ipset_notify_owner(ipset, ZAPI_IPSET_INSTALLED);
 768                 break;
 769         case ZEBRA_DPLANE_INSTALL_FAILURE:
 770                 zsend_ipset_notify_owner(ipset, ZAPI_IPSET_FAIL_INSTALL);
 771                 break;
 772         case ZEBRA_DPLANE_DELETE_SUCCESS:
 773                 zsend_ipset_notify_owner(ipset, ZAPI_IPSET_REMOVED);
 774                 break;
 775         case ZEBRA_DPLANE_DELETE_FAILURE:
 776                 zsend_ipset_notify_owner(ipset, ZAPI_IPSET_FAIL_REMOVE);
 777                 break;
 778         case ZEBRA_DPLANE_STATUS_NONE:
 779                 break;
 780         }
 781 }
 782
 783 /*
 784  * Handle success or failure of ipset (un)install in the kernel.
 785  */
 786 void kernel_pbr_ipset_entry_add_del_status(
 787                         struct zebra_pbr_ipset_entry *ipset,
 788                         enum zebra_dplane_status res)
 789 {
 790         switch (res) {
 791         case ZEBRA_DPLANE_INSTALL_SUCCESS:
 792                 zsend_ipset_entry_notify_owner(ipset,
 793                                                ZAPI_IPSET_ENTRY_INSTALLED);
 794                 break;
 795         case ZEBRA_DPLANE_INSTALL_FAILURE:
 796                 zsend_ipset_entry_notify_owner(ipset,
 797                                                ZAPI_IPSET_ENTRY_FAIL_INSTALL);
 798                 break;
 799         case ZEBRA_DPLANE_DELETE_SUCCESS:
 800                 zsend_ipset_entry_notify_owner(ipset,
 801                                                ZAPI_IPSET_ENTRY_REMOVED);
 802                 break;
 803         case ZEBRA_DPLANE_DELETE_FAILURE:
 804                 zsend_ipset_entry_notify_owner(ipset,
 805                                                ZAPI_IPSET_ENTRY_FAIL_REMOVE);
 806                 break;
 807         case ZEBRA_DPLANE_STATUS_NONE:
 808                 break;
 809         }
 810 }
 811
 812 /*
 813  * Handle success or failure of ipset (un)install in the kernel.
 814  */
 815 void kernel_pbr_iptable_add_del_status(struct zebra_pbr_iptable *iptable,
 816                                        enum zebra_dplane_status res)
 817 {
 818         switch (res) {
 819         case ZEBRA_DPLANE_INSTALL_SUCCESS:
 820                 zsend_iptable_notify_owner(iptable, ZAPI_IPTABLE_INSTALLED);
 821                 break;
 822         case ZEBRA_DPLANE_INSTALL_FAILURE:
 823                 zsend_iptable_notify_owner(iptable, ZAPI_IPTABLE_FAIL_INSTALL);
 824                 break;
 825         case ZEBRA_DPLANE_DELETE_SUCCESS:
 826                 zsend_iptable_notify_owner(iptable,
 827                                            ZAPI_IPTABLE_REMOVED);
 828                 break;
 829         case ZEBRA_DPLANE_DELETE_FAILURE:
 830                 zsend_iptable_notify_owner(iptable,
 831                                            ZAPI_IPTABLE_FAIL_REMOVE);
 832                 break;
 833         case ZEBRA_DPLANE_STATUS_NONE:
 834                 break;
 835         }
 836 }
 837
 838 /*
 839  * Handle rule delete notification from kernel.
 840  */
 841 int kernel_pbr_rule_del(struct zebra_pbr_rule *rule)
 842 {
 843         return 0;
 844 }
 845
 846 struct zebra_pbr_ipset_entry_unique_display {
 847         struct zebra_pbr_ipset *zpi;
 848         struct vty *vty;
 849         struct zebra_ns *zns;
 850 };
 851
 852 struct zebra_pbr_env_display {
 853         struct zebra_ns *zns;
 854         struct vty *vty;
 855         char *name;
 856 };
 857
 858 static const char *zebra_pbr_prefix2str(union prefixconstptr pu,
 859                                         char *str, int size)
 860 {
 861         const struct prefix *p = pu.p;
 862         char buf[PREFIX2STR_BUFFER];
 863
 864         if (p->family == AF_INET && p->prefixlen == IPV4_MAX_PREFIXLEN) {
 865                 snprintf(str, size, "%s", inet_ntop(p->family, &p->u.prefix,
 866                                                     buf, PREFIX2STR_BUFFER));
 867                 return str;
 868         }
 869         return prefix2str(pu, str, size);
 870 }
 871
 872 static void zebra_pbr_display_icmp(struct vty *vty,
 873                                    struct zebra_pbr_ipset_entry *zpie)
 874 {
 875         char decoded_str[20];
 876         uint16_t port;
 877
 878         /* range icmp type */
 879         if (zpie->src_port_max || zpie->dst_port_max) {
 880                 vty_out(vty, ":icmp:[type <%d:%d>;code <%d:%d>",
 881                         zpie->src_port_min, zpie->src_port_max,
 882                         zpie->dst_port_min, zpie->dst_port_max);
 883         } else {
 884                 port = ((zpie->src_port_min << 8) & 0xff00) +
 885                         (zpie->dst_port_min & 0xff);
 886                 memset(decoded_str, 0, sizeof(decoded_str));
 887                 sprintf(decoded_str, "%d/%d",
 888                         zpie->src_port_min,
 889                         zpie->dst_port_min);
 890                 vty_out(vty, ":icmp:%s",
 891                         lookup_msg(icmp_typecode_str,
 892                                    port, decoded_str));
 893         }
 894 }
 895
 896 static void zebra_pbr_display_port(struct vty *vty, uint32_t filter_bm,
 897                             uint16_t port_min, uint16_t port_max,
 898                             uint8_t proto)
 899 {
 900         if (!(filter_bm & PBR_FILTER_PROTO)) {
 901                 if (port_max)
 902                         vty_out(vty, ":udp/tcp:%d-%d",
 903                                 port_min, port_max);
 904                 else
 905                         vty_out(vty, ":udp/tcp:%d",
 906                                 port_min);
 907         } else {
 908                 if (port_max)
 909                         vty_out(vty, ":proto %d:%d-%d",
 910                                 proto, port_min, port_max);
 911                 else
 912                         vty_out(vty, ":proto %d:%d",
 913                                 proto, port_min);
 914         }
 915 }
 916
 917 static int zebra_pbr_show_ipset_entry_walkcb(struct hash_bucket *bucket,
 918                                              void *arg)
 919 {
 920         struct zebra_pbr_ipset_entry_unique_display *unique =
 921                 (struct zebra_pbr_ipset_entry_unique_display *)arg;
 922         struct zebra_pbr_ipset *zpi = unique->zpi;
 923         struct vty *vty = unique->vty;
 924         struct zebra_pbr_ipset_entry *zpie =
 925                 (struct zebra_pbr_ipset_entry *)bucket->data;
 926         uint64_t pkts = 0, bytes = 0;
 927         int ret = 0;
 928
 929         if (zpie->backpointer != zpi)
 930                 return HASHWALK_CONTINUE;
 931
 932         if ((zpi->type == IPSET_NET_NET) ||
 933             (zpi->type == IPSET_NET_PORT_NET)) {
 934                 char buf[PREFIX_STRLEN];
 935
 936                 zebra_pbr_prefix2str(&(zpie->src), buf, sizeof(buf));
 937                 vty_out(vty, "\tfrom %s", buf);
 938                 if (zpie->filter_bm & PBR_FILTER_SRC_PORT &&
 939                     zpie->proto != IPPROTO_ICMP)
 940                         zebra_pbr_display_port(vty, zpie->filter_bm,
 941                                                zpie->src_port_min,
 942                                                zpie->src_port_max,
 943                                                zpie->proto);
 944                 vty_out(vty, " to ");
 945                 zebra_pbr_prefix2str(&(zpie->dst), buf, sizeof(buf));
 946                 vty_out(vty, "%s", buf);
 947                 if (zpie->filter_bm & PBR_FILTER_DST_PORT &&
 948                     zpie->proto != IPPROTO_ICMP)
 949                         zebra_pbr_display_port(vty, zpie->filter_bm,
 950                                                zpie->dst_port_min,
 951                                                zpie->dst_port_max,
 952                                                zpie->proto);
 953                 if (zpie->proto == IPPROTO_ICMP)
 954                         zebra_pbr_display_icmp(vty, zpie);
 955         } else if ((zpi->type == IPSET_NET) ||
 956                    (zpi->type == IPSET_NET_PORT)) {
 957                 char buf[PREFIX_STRLEN];
 958
 959                 if (zpie->filter_bm & PBR_FILTER_SRC_IP) {
 960                         zebra_pbr_prefix2str(&(zpie->src), buf, sizeof(buf));
 961                         vty_out(vty, "\tfrom %s", buf);
 962                 }
 963                 if (zpie->filter_bm & PBR_FILTER_SRC_PORT &&
 964                     zpie->proto != IPPROTO_ICMP)
 965                         zebra_pbr_display_port(vty, zpie->filter_bm,
 966                                                zpie->src_port_min,
 967                                                zpie->src_port_max,
 968                                                zpie->proto);
 969                 if (zpie->filter_bm & PBR_FILTER_DST_IP) {
 970                         zebra_pbr_prefix2str(&(zpie->dst), buf, sizeof(buf));
 971                         vty_out(vty, "\tto %s", buf);
 972                 }
 973                 if (zpie->filter_bm & PBR_FILTER_DST_PORT &&
 974                     zpie->proto != IPPROTO_ICMP)
 975                         zebra_pbr_display_port(vty, zpie->filter_bm,
 976                                                zpie->dst_port_min,
 977                                                zpie->dst_port_max,
 978                                                zpie->proto);
 979                 if (zpie->proto == IPPROTO_ICMP)
 980                         zebra_pbr_display_icmp(vty, zpie);
 981         }
 982         vty_out(vty, " (%u)\n", zpie->unique);
 983
 984         ret = hook_call(zebra_pbr_ipset_entry_get_stat, zpie, &pkts,
 985                         &bytes);
 986         if (ret && pkts > 0)
 987                 vty_out(vty, "\t pkts %" PRIu64 ", bytes %" PRIu64"\n",
 988                         pkts, bytes);
 989         return HASHWALK_CONTINUE;
 990 }
 991
 992 static int zebra_pbr_show_ipset_walkcb(struct hash_bucket *bucket, void *arg)
 993 {
 994         struct zebra_pbr_env_display *uniqueipset =
 995                 (struct zebra_pbr_env_display *)arg;
 996         struct zebra_pbr_ipset *zpi = (struct zebra_pbr_ipset *)bucket->data;
 997         struct zebra_pbr_ipset_entry_unique_display unique;
 998         struct vty *vty = uniqueipset->vty;
 999         struct zebra_ns *zns = uniqueipset->zns;
1000
1001         vty_out(vty, "IPset %s type %s\n", zpi->ipset_name,
1002                 zebra_pbr_ipset_type2str(zpi->type));
1003         unique.vty = vty;
1004         unique.zpi = zpi;
1005         unique.zns = zns;
1006         hash_walk(zrouter.ipset_entry_hash, zebra_pbr_show_ipset_entry_walkcb,
1007                   &unique);
1008         vty_out(vty, "\n");
1009         return HASHWALK_CONTINUE;
1010 }
1011
1012 size_t zebra_pbr_tcpflags_snprintf(char *buffer, size_t len,
1013                                    uint16_t tcp_val)
1014 {
1015         size_t len_written = 0;
1016         static struct message nt = {0};
1017         const struct message *pnt;
1018         int incr = 0;
1019
1020         for (pnt = tcp_value_str;
1021              memcmp(pnt, &nt, sizeof(struct message)); pnt++)
1022                 if (pnt->key & tcp_val) {
1023                         len_written += snprintf(buffer + len_written,
1024                                                 len - len_written,
1025                                                 "%s%s", incr ?
1026                                                 ",":"", pnt->str);
1027                         incr++;
1028                 }
1029         return len_written;
1030 }
1031
1032 /*
1033  */
1034 void zebra_pbr_show_ipset_list(struct vty *vty, char *ipsetname)
1035 {
1036         struct zebra_pbr_ipset *zpi;
1037         struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT);
1038         struct zebra_pbr_ipset_entry_unique_display unique;
1039         struct zebra_pbr_env_display uniqueipset;
1040
1041         if (ipsetname) {
1042                 zpi = zebra_pbr_lookup_ipset_pername(ipsetname);
1043                 if (!zpi) {
1044                         vty_out(vty, "No IPset %s found\n", ipsetname);
1045                         return;
1046                 }
1047                 vty_out(vty, "IPset %s type %s\n", ipsetname,
1048                         zebra_pbr_ipset_type2str(zpi->type));
1049
1050                 unique.vty = vty;
1051                 unique.zpi = zpi;
1052                 unique.zns = zns;
1053                 hash_walk(zrouter.ipset_entry_hash,
1054                           zebra_pbr_show_ipset_entry_walkcb, &unique);
1055                 return;
1056         }
1057         uniqueipset.zns = zns;
1058         uniqueipset.vty = vty;
1059         uniqueipset.name = NULL;
1060         hash_walk(zrouter.ipset_hash, zebra_pbr_show_ipset_walkcb,
1061                   &uniqueipset);
1062 }
1063
1064 struct pbr_rule_fwmark_lookup {
1065         struct zebra_pbr_rule *ptr;
1066         uint32_t fwmark;
1067 };
1068
1069 static int zebra_pbr_rule_lookup_fwmark_walkcb(struct hash_bucket *bucket,
1070                                                void *arg)
1071 {
1072         struct pbr_rule_fwmark_lookup *iprule =
1073                 (struct pbr_rule_fwmark_lookup *)arg;
1074         struct zebra_pbr_rule *zpr = (struct zebra_pbr_rule *)bucket->data;
1075
1076         if (iprule->fwmark == zpr->rule.filter.fwmark) {
1077                 iprule->ptr = zpr;
1078                 return HASHWALK_ABORT;
1079         }
1080         return HASHWALK_CONTINUE;
1081 }
1082
1083 static void zebra_pbr_show_iptable_unit(struct zebra_pbr_iptable *iptable,
1084                                        struct vty *vty,
1085                                        struct zebra_ns *zns)
1086 {
1087         int ret;
1088         uint64_t pkts = 0, bytes = 0;
1089
1090         vty_out(vty, "IPtable %s action %s (%u)\n", iptable->ipset_name,
1091                 iptable->action == ZEBRA_IPTABLES_DROP ? "drop" : "redirect",
1092                 iptable->unique);
1093         if (iptable->type == IPSET_NET_PORT ||
1094             iptable->type == IPSET_NET_PORT_NET) {
1095                 if (!(iptable->filter_bm & MATCH_ICMP_SET)) {
1096                         if (iptable->filter_bm & PBR_FILTER_DST_PORT)
1097                                 vty_out(vty, "\t lookup dst port\n");
1098                         else if (iptable->filter_bm & PBR_FILTER_SRC_PORT)
1099                                 vty_out(vty, "\t lookup src port\n");
1100                 }
1101         }
1102         if (iptable->pkt_len_min || iptable->pkt_len_max) {
1103                 if (!iptable->pkt_len_max)
1104                         vty_out(vty, "\t pkt len %u\n",
1105                                 iptable->pkt_len_min);
1106                 else
1107                         vty_out(vty, "\t pkt len [%u;%u]\n",
1108                                 iptable->pkt_len_min,
1109                                 iptable->pkt_len_max);
1110         }
1111         if (iptable->tcp_flags || iptable->tcp_mask_flags) {
1112                 char tcp_flag_str[64];
1113                 char tcp_flag_mask_str[64];
1114
1115                 zebra_pbr_tcpflags_snprintf(tcp_flag_str,
1116                                             sizeof(tcp_flag_str),
1117                                             iptable->tcp_flags);
1118                 zebra_pbr_tcpflags_snprintf(tcp_flag_mask_str,
1119                                             sizeof(tcp_flag_mask_str),
1120                                             iptable->tcp_mask_flags);
1121                 vty_out(vty, "\t tcpflags [%s/%s]\n",
1122                         tcp_flag_str, tcp_flag_mask_str);
1123         }
1124         if (iptable->filter_bm & (MATCH_DSCP_SET | MATCH_DSCP_INVERSE_SET)) {
1125                 vty_out(vty, "\t dscp %s %d\n",
1126                         iptable->filter_bm & MATCH_DSCP_INVERSE_SET ?
1127                         "not" : "", iptable->dscp_value);
1128         }
1129         if (iptable->fragment) {
1130                 char val_str[10];
1131
1132                 sprintf(val_str, "%d", iptable->fragment);
1133                 vty_out(vty, "\t fragment%s %s\n",
1134                         iptable->filter_bm & MATCH_FRAGMENT_INVERSE_SET ?
1135                         " not" : "", lookup_msg(fragment_value_str,
1136                                                iptable->fragment, val_str));
1137         }
1138         if (iptable->protocol) {
1139                 vty_out(vty, "\t protocol %d\n",
1140                         iptable->protocol);
1141         }
1142         ret = hook_call(zebra_pbr_iptable_get_stat, iptable, &pkts,
1143                         &bytes);
1144         if (ret && pkts > 0)
1145                 vty_out(vty, "\t pkts %" PRIu64 ", bytes %" PRIu64"\n",
1146                         pkts, bytes);
1147         if (iptable->action != ZEBRA_IPTABLES_DROP) {
1148                 struct pbr_rule_fwmark_lookup prfl;
1149
1150                 prfl.fwmark = iptable->fwmark;
1151                 prfl.ptr = NULL;
1152                 hash_walk(zrouter.rules_hash,
1153                           &zebra_pbr_rule_lookup_fwmark_walkcb, &prfl);
1154                 if (prfl.ptr) {
1155                         struct zebra_pbr_rule *zpr = prfl.ptr;
1156
1157                         vty_out(vty, "\t table %u, fwmark %u\n",
1158                                 zpr->rule.action.table,
1159                                 prfl.fwmark);
1160                 }
1161         }
1162 }
1163
1164 static int zebra_pbr_show_iptable_walkcb(struct hash_bucket *bucket, void *arg)
1165 {
1166         struct zebra_pbr_iptable *iptable =
1167                 (struct zebra_pbr_iptable *)bucket->data;
1168         struct zebra_pbr_env_display *env = (struct zebra_pbr_env_display *)arg;
1169         struct vty *vty = env->vty;
1170         struct zebra_ns *zns = env->zns;
1171         char *iptable_name = env->name;
1172
1173         if (!iptable_name)
1174                 zebra_pbr_show_iptable_unit(iptable, vty, zns);
1175         else if (!strncmp(iptable_name,
1176                           iptable->ipset_name,
1177                           ZEBRA_IPSET_NAME_SIZE))
1178                 zebra_pbr_show_iptable_unit(iptable, vty, zns);
1179         return HASHWALK_CONTINUE;
1180 }
1181
1182 void zebra_pbr_show_iptable(struct vty *vty, char *iptable_name)
1183 {
1184         struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT);
1185         struct zebra_pbr_env_display env;
1186
1187         env.vty = vty;
1188         env.zns = zns;
1189         env.name = iptable_name;
1190         hash_walk(zrouter.iptable_hash, zebra_pbr_show_iptable_walkcb, &env);
1191 }
1192
1193 void zebra_pbr_iptable_update_interfacelist(struct stream *s,
1194                                             struct zebra_pbr_iptable *zpi)
1195 {
1196         uint32_t i = 0, index;
1197         struct interface *ifp;
1198         char *name;
1199
1200         for (i = 0; i < zpi->nb_interface; i++) {
1201                 STREAM_GETL(s, index);
1202                 ifp = if_lookup_by_index(index, zpi->vrf_id);
1203                 if (!ifp)
1204                         continue;
1205                 name = XSTRDUP(MTYPE_PBR_IPTABLE_IFNAME, ifp->name);
1206                 listnode_add(zpi->interface_name_list, name);
1207         }
1208 stream_failure:
1209         return;
1210 }