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         for (ALL_LIST_ELEMENTS(iptable->interface_name_list,
 349                                         node, nnode, name)) {
 350                 XFREE(MTYPE_PBR_IPTABLE_IFNAME, name);
 351                 list_delete_node(iptable->interface_name_list,
 352                                  node);
 353         }
 354         XFREE(MTYPE_TMP, iptable);
 355 }
 356
 357 uint32_t zebra_pbr_iptable_hash_key(const void *arg)
 358 {
 359         const struct zebra_pbr_iptable *iptable = arg;
 360         uint32_t *pnt = (uint32_t *)&(iptable->ipset_name);
 361         uint32_t key;
 362
 363         key = jhash2(pnt, ZEBRA_IPSET_NAME_HASH_SIZE,
 364                      0x63ab42de);
 365         key = jhash_1word(iptable->fwmark, key);
 366         key = jhash_1word(iptable->pkt_len_min, key);
 367         key = jhash_1word(iptable->pkt_len_max, key);
 368         key = jhash_1word(iptable->tcp_flags, key);
 369         key = jhash_1word(iptable->tcp_mask_flags, key);
 370         key = jhash_1word(iptable->dscp_value, key);
 371         key = jhash_1word(iptable->protocol, key);
 372         key = jhash_1word(iptable->fragment, key);
 373         key = jhash_1word(iptable->vrf_id, key);
 374
 375         return jhash_3words(iptable->filter_bm, iptable->type,
 376                             iptable->unique, key);
 377 }
 378
 379 bool zebra_pbr_iptable_hash_equal(const void *arg1, const void *arg2)
 380 {
 381         const struct zebra_pbr_iptable *r1, *r2;
 382
 383         r1 = (const struct zebra_pbr_iptable *)arg1;
 384         r2 = (const struct zebra_pbr_iptable *)arg2;
 385
 386         if (r1->vrf_id != r2->vrf_id)
 387                 return false;
 388         if (r1->type != r2->type)
 389                 return false;
 390         if (r1->unique != r2->unique)
 391                 return false;
 392         if (r1->filter_bm != r2->filter_bm)
 393                 return false;
 394         if (r1->fwmark != r2->fwmark)
 395                 return false;
 396         if (r1->action != r2->action)
 397                 return false;
 398         if (strncmp(r1->ipset_name, r2->ipset_name,
 399                     ZEBRA_IPSET_NAME_SIZE))
 400                 return false;
 401         if (r1->pkt_len_min != r2->pkt_len_min)
 402                 return false;
 403         if (r1->pkt_len_max != r2->pkt_len_max)
 404                 return false;
 405         if (r1->tcp_flags != r2->tcp_flags)
 406                 return false;
 407         if (r1->tcp_mask_flags != r2->tcp_mask_flags)
 408                 return false;
 409         if (r1->dscp_value != r2->dscp_value)
 410                 return false;
 411         if (r1->fragment != r2->fragment)
 412                 return false;
 413         if (r1->protocol != r2->protocol)
 414                 return false;
 415         return true;
 416 }
 417
 418 static void *pbr_rule_alloc_intern(void *arg)
 419 {
 420         struct zebra_pbr_rule *zpr;
 421         struct zebra_pbr_rule *new;
 422
 423         zpr = (struct zebra_pbr_rule *)arg;
 424
 425         new = XCALLOC(MTYPE_TMP, sizeof(*new));
 426
 427         memcpy(new, zpr, sizeof(*zpr));
 428
 429         return new;
 430 }
 431
 432 void zebra_pbr_add_rule(struct zebra_pbr_rule *rule)
 433 {
 434         struct zebra_pbr_rule *unique =
 435                 pbr_rule_lookup_unique(rule);
 436
 437         (void)hash_get(zrouter.rules_hash, rule, pbr_rule_alloc_intern);
 438         (void)kernel_add_pbr_rule(rule);
 439         /*
 440          * Rule Replace semantics, if we have an old, install the
 441          * new rule, look above, and then delete the old
 442          */
 443         if (unique)
 444                 zebra_pbr_del_rule(unique);
 445 }
 446
 447 void zebra_pbr_del_rule(struct zebra_pbr_rule *rule)
 448 {
 449         struct zebra_pbr_rule *lookup;
 450
 451         lookup = hash_lookup(zrouter.rules_hash, rule);
 452         (void)kernel_del_pbr_rule(rule);
 453
 454         if (lookup) {
 455                 hash_release(zrouter.rules_hash, lookup);
 456                 XFREE(MTYPE_TMP, lookup);
 457         } else
 458                 zlog_debug("%s: Rule being deleted we know nothing about",
 459                            __PRETTY_FUNCTION__);
 460 }
 461
 462 static void zebra_pbr_cleanup_rules(struct hash_bucket *b, void *data)
 463 {
 464         struct zebra_pbr_rule *rule = b->data;
 465         int *sock = data;
 466
 467         if (rule->sock == *sock) {
 468                 (void)kernel_del_pbr_rule(rule);
 469                 if (hash_release(zrouter.rules_hash, rule))
 470                         XFREE(MTYPE_TMP, rule);
 471                 else
 472                         zlog_debug(
 473                                 "%s: Rule seq: %u is being cleaned but we can't find it in our tables",
 474                                 __func__, rule->rule.seq);
 475         }
 476 }
 477
 478 static void zebra_pbr_cleanup_ipset(struct hash_bucket *b, void *data)
 479 {
 480         struct zebra_pbr_ipset *ipset = b->data;
 481         int *sock = data;
 482
 483         if (ipset->sock == *sock) {
 484                 hook_call(zebra_pbr_ipset_update, 0, ipset);
 485                 hash_release(zrouter.ipset_hash, ipset);
 486         }
 487 }
 488
 489 static void zebra_pbr_cleanup_ipset_entry(struct hash_bucket *b, void *data)
 490 {
 491         struct zebra_pbr_ipset_entry *ipset = b->data;
 492         int *sock = data;
 493
 494         if (ipset->sock == *sock) {
 495                 hook_call(zebra_pbr_ipset_entry_update, 0, ipset);
 496                 hash_release(zrouter.ipset_entry_hash, ipset);
 497         }
 498 }
 499
 500 static void zebra_pbr_cleanup_iptable(struct hash_bucket *b, void *data)
 501 {
 502         struct zebra_pbr_iptable *iptable = b->data;
 503         int *sock = data;
 504
 505         if (iptable->sock == *sock) {
 506                 hook_call(zebra_pbr_iptable_update, 0, iptable);
 507                 hash_release(zrouter.iptable_hash, iptable);
 508         }
 509 }
 510
 511 static int zebra_pbr_client_close_cleanup(struct zserv *client)
 512 {
 513         int sock = client->sock;
 514
 515         if (!sock)
 516                 return 0;
 517         hash_iterate(zrouter.rules_hash, zebra_pbr_cleanup_rules, &sock);
 518         hash_iterate(zrouter.iptable_hash, zebra_pbr_cleanup_iptable, &sock);
 519         hash_iterate(zrouter.ipset_entry_hash, zebra_pbr_cleanup_ipset_entry,
 520                      &sock);
 521         hash_iterate(zrouter.ipset_hash, zebra_pbr_cleanup_ipset, &sock);
 522         return 1;
 523 }
 524
 525 void zebra_pbr_init(void)
 526 {
 527         hook_register(zserv_client_close, zebra_pbr_client_close_cleanup);
 528 }
 529
 530 static void *pbr_ipset_alloc_intern(void *arg)
 531 {
 532         struct zebra_pbr_ipset *zpi;
 533         struct zebra_pbr_ipset *new;
 534
 535         zpi = (struct zebra_pbr_ipset *)arg;
 536
 537         new = XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_ipset));
 538
 539         memcpy(new, zpi, sizeof(*zpi));
 540
 541         return new;
 542 }
 543
 544 void zebra_pbr_create_ipset(struct zebra_pbr_ipset *ipset)
 545 {
 546         int ret;
 547
 548         (void)hash_get(zrouter.ipset_hash, ipset, pbr_ipset_alloc_intern);
 549         ret = hook_call(zebra_pbr_ipset_update, 1, ipset);
 550         kernel_pbr_ipset_add_del_status(ipset,
 551                                         ret ? ZEBRA_DPLANE_INSTALL_SUCCESS
 552                                         : ZEBRA_DPLANE_INSTALL_FAILURE);
 553 }
 554
 555 void zebra_pbr_destroy_ipset(struct zebra_pbr_ipset *ipset)
 556 {
 557         struct zebra_pbr_ipset *lookup;
 558
 559         lookup = hash_lookup(zrouter.ipset_hash, ipset);
 560         hook_call(zebra_pbr_ipset_update, 0, ipset);
 561         if (lookup) {
 562                 hash_release(zrouter.ipset_hash, lookup);
 563                 XFREE(MTYPE_TMP, lookup);
 564         } else
 565                 zlog_debug(
 566                         "%s: IPSet Entry being deleted we know nothing about",
 567                         __PRETTY_FUNCTION__);
 568 }
 569
 570 struct pbr_ipset_name_lookup {
 571         struct zebra_pbr_ipset *ipset;
 572         char ipset_name[ZEBRA_IPSET_NAME_SIZE];
 573 };
 574
 575 const char *zebra_pbr_ipset_type2str(uint32_t type)
 576 {
 577         return lookup_msg(ipset_type_msg, type,
 578                           "Unrecognized IPset Type");
 579 }
 580
 581 static int zebra_pbr_ipset_pername_walkcb(struct hash_bucket *bucket, void *arg)
 582 {
 583         struct pbr_ipset_name_lookup *pinl =
 584                 (struct pbr_ipset_name_lookup *)arg;
 585         struct zebra_pbr_ipset *zpi = (struct zebra_pbr_ipset *)bucket->data;
 586
 587         if (!strncmp(pinl->ipset_name, zpi->ipset_name,
 588                      ZEBRA_IPSET_NAME_SIZE)) {
 589                 pinl->ipset = zpi;
 590                 return HASHWALK_ABORT;
 591         }
 592         return HASHWALK_CONTINUE;
 593 }
 594
 595 struct zebra_pbr_ipset *zebra_pbr_lookup_ipset_pername(char *ipsetname)
 596 {
 597         struct pbr_ipset_name_lookup pinl;
 598         struct pbr_ipset_name_lookup *ptr = &pinl;
 599
 600         if (!ipsetname)
 601                 return NULL;
 602         memset(ptr, 0, sizeof(struct pbr_ipset_name_lookup));
 603         snprintf((char *)ptr->ipset_name, ZEBRA_IPSET_NAME_SIZE, "%s",
 604                 ipsetname);
 605         hash_walk(zrouter.ipset_hash, zebra_pbr_ipset_pername_walkcb, ptr);
 606         return ptr->ipset;
 607 }
 608
 609 static void *pbr_ipset_entry_alloc_intern(void *arg)
 610 {
 611         struct zebra_pbr_ipset_entry *zpi;
 612         struct zebra_pbr_ipset_entry *new;
 613
 614         zpi = (struct zebra_pbr_ipset_entry *)arg;
 615
 616         new = XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_ipset_entry));
 617
 618         memcpy(new, zpi, sizeof(*zpi));
 619
 620         return new;
 621 }
 622
 623 void zebra_pbr_add_ipset_entry(struct zebra_pbr_ipset_entry *ipset)
 624 {
 625         int ret;
 626
 627         (void)hash_get(zrouter.ipset_entry_hash, ipset,
 628                        pbr_ipset_entry_alloc_intern);
 629         ret = hook_call(zebra_pbr_ipset_entry_update, 1, ipset);
 630         kernel_pbr_ipset_entry_add_del_status(ipset,
 631                                         ret ? ZEBRA_DPLANE_INSTALL_SUCCESS
 632                                         : ZEBRA_DPLANE_INSTALL_FAILURE);
 633 }
 634
 635 void zebra_pbr_del_ipset_entry(struct zebra_pbr_ipset_entry *ipset)
 636 {
 637         struct zebra_pbr_ipset_entry *lookup;
 638
 639         lookup = hash_lookup(zrouter.ipset_entry_hash, ipset);
 640         hook_call(zebra_pbr_ipset_entry_update, 0, ipset);
 641         if (lookup) {
 642                 hash_release(zrouter.ipset_entry_hash, lookup);
 643                 XFREE(MTYPE_TMP, lookup);
 644         } else
 645                 zlog_debug("%s: IPSet being deleted we know nothing about",
 646                            __PRETTY_FUNCTION__);
 647 }
 648
 649 static void *pbr_iptable_alloc_intern(void *arg)
 650 {
 651         struct zebra_pbr_iptable *zpi;
 652         struct zebra_pbr_iptable *new;
 653
 654         zpi = (struct zebra_pbr_iptable *)arg;
 655
 656         new = XCALLOC(MTYPE_TMP, sizeof(struct zebra_pbr_iptable));
 657
 658         memcpy(new, zpi, sizeof(*zpi));
 659
 660         return new;
 661 }
 662
 663 void zebra_pbr_add_iptable(struct zebra_pbr_iptable *iptable)
 664 {
 665         int ret;
 666
 667         (void)hash_get(zrouter.iptable_hash, iptable, pbr_iptable_alloc_intern);
 668         ret = hook_call(zebra_pbr_iptable_update, 1, iptable);
 669         kernel_pbr_iptable_add_del_status(iptable,
 670                                           ret ? ZEBRA_DPLANE_INSTALL_SUCCESS
 671                                           : ZEBRA_DPLANE_INSTALL_FAILURE);
 672 }
 673
 674 void zebra_pbr_del_iptable(struct zebra_pbr_iptable *iptable)
 675 {
 676         struct zebra_pbr_iptable *lookup;
 677
 678         lookup = hash_lookup(zrouter.iptable_hash, iptable);
 679         hook_call(zebra_pbr_iptable_update, 0, iptable);
 680         if (lookup) {
 681                 struct listnode *node, *nnode;
 682                 char *name;
 683
 684                 hash_release(zrouter.iptable_hash, lookup);
 685                 for (ALL_LIST_ELEMENTS(iptable->interface_name_list,
 686                                        node, nnode, name)) {
 687                         XFREE(MTYPE_PBR_IPTABLE_IFNAME, name);
 688                         list_delete_node(iptable->interface_name_list,
 689                                          node);
 690                 }
 691                 XFREE(MTYPE_TMP, lookup);
 692         } else
 693                 zlog_debug("%s: IPTable being deleted we know nothing about",
 694                            __PRETTY_FUNCTION__);
 695 }
 696
 697 /*
 698  * Handle success or failure of rule (un)install in the kernel.
 699  */
 700 void kernel_pbr_rule_add_del_status(struct zebra_pbr_rule *rule,
 701                                     enum zebra_dplane_status res)
 702 {
 703         switch (res) {
 704         case ZEBRA_DPLANE_INSTALL_SUCCESS:
 705                 zsend_rule_notify_owner(rule, ZAPI_RULE_INSTALLED);
 706                 break;
 707         case ZEBRA_DPLANE_INSTALL_FAILURE:
 708                 zsend_rule_notify_owner(rule, ZAPI_RULE_FAIL_INSTALL);
 709                 break;
 710         case ZEBRA_DPLANE_DELETE_SUCCESS:
 711                 zsend_rule_notify_owner(rule, ZAPI_RULE_REMOVED);
 712                 break;
 713         case ZEBRA_DPLANE_DELETE_FAILURE:
 714                 zsend_rule_notify_owner(rule, ZAPI_RULE_FAIL_REMOVE);
 715                 break;
 716         case ZEBRA_DPLANE_STATUS_NONE:
 717                 break;
 718         }
 719 }
 720
 721 /*
 722  * Handle success or failure of ipset (un)install in the kernel.
 723  */
 724 void kernel_pbr_ipset_add_del_status(struct zebra_pbr_ipset *ipset,
 725                                     enum zebra_dplane_status res)
 726 {
 727         switch (res) {
 728         case ZEBRA_DPLANE_INSTALL_SUCCESS:
 729                 zsend_ipset_notify_owner(ipset, ZAPI_IPSET_INSTALLED);
 730                 break;
 731         case ZEBRA_DPLANE_INSTALL_FAILURE:
 732                 zsend_ipset_notify_owner(ipset, ZAPI_IPSET_FAIL_INSTALL);
 733                 break;
 734         case ZEBRA_DPLANE_DELETE_SUCCESS:
 735                 zsend_ipset_notify_owner(ipset, ZAPI_IPSET_REMOVED);
 736                 break;
 737         case ZEBRA_DPLANE_DELETE_FAILURE:
 738                 zsend_ipset_notify_owner(ipset, ZAPI_IPSET_FAIL_REMOVE);
 739                 break;
 740         case ZEBRA_DPLANE_STATUS_NONE:
 741                 break;
 742         }
 743 }
 744
 745 /*
 746  * Handle success or failure of ipset (un)install in the kernel.
 747  */
 748 void kernel_pbr_ipset_entry_add_del_status(
 749                         struct zebra_pbr_ipset_entry *ipset,
 750                         enum zebra_dplane_status res)
 751 {
 752         switch (res) {
 753         case ZEBRA_DPLANE_INSTALL_SUCCESS:
 754                 zsend_ipset_entry_notify_owner(ipset,
 755                                                ZAPI_IPSET_ENTRY_INSTALLED);
 756                 break;
 757         case ZEBRA_DPLANE_INSTALL_FAILURE:
 758                 zsend_ipset_entry_notify_owner(ipset,
 759                                                ZAPI_IPSET_ENTRY_FAIL_INSTALL);
 760                 break;
 761         case ZEBRA_DPLANE_DELETE_SUCCESS:
 762                 zsend_ipset_entry_notify_owner(ipset,
 763                                                ZAPI_IPSET_ENTRY_REMOVED);
 764                 break;
 765         case ZEBRA_DPLANE_DELETE_FAILURE:
 766                 zsend_ipset_entry_notify_owner(ipset,
 767                                                ZAPI_IPSET_ENTRY_FAIL_REMOVE);
 768                 break;
 769         case ZEBRA_DPLANE_STATUS_NONE:
 770                 break;
 771         }
 772 }
 773
 774 /*
 775  * Handle success or failure of ipset (un)install in the kernel.
 776  */
 777 void kernel_pbr_iptable_add_del_status(struct zebra_pbr_iptable *iptable,
 778                                        enum zebra_dplane_status res)
 779 {
 780         switch (res) {
 781         case ZEBRA_DPLANE_INSTALL_SUCCESS:
 782                 zsend_iptable_notify_owner(iptable, ZAPI_IPTABLE_INSTALLED);
 783                 break;
 784         case ZEBRA_DPLANE_INSTALL_FAILURE:
 785                 zsend_iptable_notify_owner(iptable, ZAPI_IPTABLE_FAIL_INSTALL);
 786                 break;
 787         case ZEBRA_DPLANE_DELETE_SUCCESS:
 788                 zsend_iptable_notify_owner(iptable,
 789                                            ZAPI_IPTABLE_REMOVED);
 790                 break;
 791         case ZEBRA_DPLANE_DELETE_FAILURE:
 792                 zsend_iptable_notify_owner(iptable,
 793                                            ZAPI_IPTABLE_FAIL_REMOVE);
 794                 break;
 795         case ZEBRA_DPLANE_STATUS_NONE:
 796                 break;
 797         }
 798 }
 799
 800 /*
 801  * Handle rule delete notification from kernel.
 802  */
 803 int kernel_pbr_rule_del(struct zebra_pbr_rule *rule)
 804 {
 805         return 0;
 806 }
 807
 808 struct zebra_pbr_ipset_entry_unique_display {
 809         struct zebra_pbr_ipset *zpi;
 810         struct vty *vty;
 811         struct zebra_ns *zns;
 812 };
 813
 814 struct zebra_pbr_env_display {
 815         struct zebra_ns *zns;
 816         struct vty *vty;
 817         char *name;
 818 };
 819
 820 static const char *zebra_pbr_prefix2str(union prefixconstptr pu,
 821                                         char *str, int size)
 822 {
 823         const struct prefix *p = pu.p;
 824         char buf[PREFIX2STR_BUFFER];
 825
 826         if (p->family == AF_INET && p->prefixlen == IPV4_MAX_PREFIXLEN) {
 827                 snprintf(str, size, "%s", inet_ntop(p->family, &p->u.prefix,
 828                                                     buf, PREFIX2STR_BUFFER));
 829                 return str;
 830         }
 831         return prefix2str(pu, str, size);
 832 }
 833
 834 static void zebra_pbr_display_icmp(struct vty *vty,
 835                                    struct zebra_pbr_ipset_entry *zpie)
 836 {
 837         char decoded_str[20];
 838         uint16_t port;
 839
 840         /* range icmp type */
 841         if (zpie->src_port_max || zpie->dst_port_max) {
 842                 vty_out(vty, ":icmp:[type <%d:%d>;code <%d:%d>",
 843                         zpie->src_port_min, zpie->src_port_max,
 844                         zpie->dst_port_min, zpie->dst_port_max);
 845         } else {
 846                 port = ((zpie->src_port_min << 8) & 0xff00) +
 847                         (zpie->dst_port_min & 0xff);
 848                 memset(decoded_str, 0, sizeof(decoded_str));
 849                 sprintf(decoded_str, "%d/%d",
 850                         zpie->src_port_min,
 851                         zpie->dst_port_min);
 852                 vty_out(vty, ":icmp:%s",
 853                         lookup_msg(icmp_typecode_str,
 854                                    port, decoded_str));
 855         }
 856 }
 857
 858 static void zebra_pbr_display_port(struct vty *vty, uint32_t filter_bm,
 859                             uint16_t port_min, uint16_t port_max,
 860                             uint8_t proto)
 861 {
 862         if (!(filter_bm & PBR_FILTER_PROTO)) {
 863                 if (port_max)
 864                         vty_out(vty, ":udp/tcp:%d-%d",
 865                                 port_min, port_max);
 866                 else
 867                         vty_out(vty, ":udp/tcp:%d",
 868                                 port_min);
 869         } else {
 870                 if (port_max)
 871                         vty_out(vty, ":proto %d:%d-%d",
 872                                 proto, port_min, port_max);
 873                 else
 874                         vty_out(vty, ":proto %d:%d",
 875                                 proto, port_min);
 876         }
 877 }
 878
 879 static int zebra_pbr_show_ipset_entry_walkcb(struct hash_bucket *bucket,
 880                                              void *arg)
 881 {
 882         struct zebra_pbr_ipset_entry_unique_display *unique =
 883                 (struct zebra_pbr_ipset_entry_unique_display *)arg;
 884         struct zebra_pbr_ipset *zpi = unique->zpi;
 885         struct vty *vty = unique->vty;
 886         struct zebra_pbr_ipset_entry *zpie =
 887                 (struct zebra_pbr_ipset_entry *)bucket->data;
 888         uint64_t pkts = 0, bytes = 0;
 889         int ret = 0;
 890
 891         if (zpie->backpointer != zpi)
 892                 return HASHWALK_CONTINUE;
 893
 894         if ((zpi->type == IPSET_NET_NET) ||
 895             (zpi->type == IPSET_NET_PORT_NET)) {
 896                 char buf[PREFIX_STRLEN];
 897
 898                 zebra_pbr_prefix2str(&(zpie->src), buf, sizeof(buf));
 899                 vty_out(vty, "\tfrom %s", buf);
 900                 if (zpie->filter_bm & PBR_FILTER_SRC_PORT &&
 901                     zpie->proto != IPPROTO_ICMP)
 902                         zebra_pbr_display_port(vty, zpie->filter_bm,
 903                                                zpie->src_port_min,
 904                                                zpie->src_port_max,
 905                                                zpie->proto);
 906                 vty_out(vty, " to ");
 907                 zebra_pbr_prefix2str(&(zpie->dst), buf, sizeof(buf));
 908                 vty_out(vty, "%s", buf);
 909                 if (zpie->filter_bm & PBR_FILTER_DST_PORT &&
 910                     zpie->proto != IPPROTO_ICMP)
 911                         zebra_pbr_display_port(vty, zpie->filter_bm,
 912                                                zpie->dst_port_min,
 913                                                zpie->dst_port_max,
 914                                                zpie->proto);
 915                 if (zpie->proto == IPPROTO_ICMP)
 916                         zebra_pbr_display_icmp(vty, zpie);
 917         } else if ((zpi->type == IPSET_NET) ||
 918                    (zpi->type == IPSET_NET_PORT)) {
 919                 char buf[PREFIX_STRLEN];
 920
 921                 if (zpie->filter_bm & PBR_FILTER_SRC_IP) {
 922                         zebra_pbr_prefix2str(&(zpie->src), buf, sizeof(buf));
 923                         vty_out(vty, "\tfrom %s", buf);
 924                 }
 925                 if (zpie->filter_bm & PBR_FILTER_SRC_PORT &&
 926                     zpie->proto != IPPROTO_ICMP)
 927                         zebra_pbr_display_port(vty, zpie->filter_bm,
 928                                                zpie->src_port_min,
 929                                                zpie->src_port_max,
 930                                                zpie->proto);
 931                 if (zpie->filter_bm & PBR_FILTER_DST_IP) {
 932                         zebra_pbr_prefix2str(&(zpie->dst), buf, sizeof(buf));
 933                         vty_out(vty, "\tto %s", buf);
 934                 }
 935                 if (zpie->filter_bm & PBR_FILTER_DST_PORT &&
 936                     zpie->proto != IPPROTO_ICMP)
 937                         zebra_pbr_display_port(vty, zpie->filter_bm,
 938                                                zpie->dst_port_min,
 939                                                zpie->dst_port_max,
 940                                                zpie->proto);
 941                 if (zpie->proto == IPPROTO_ICMP)
 942                         zebra_pbr_display_icmp(vty, zpie);
 943         }
 944         vty_out(vty, " (%u)\n", zpie->unique);
 945
 946         ret = hook_call(zebra_pbr_ipset_entry_get_stat, zpie, &pkts,
 947                         &bytes);
 948         if (ret && pkts > 0)
 949                 vty_out(vty, "\t pkts %" PRIu64 ", bytes %" PRIu64"\n",
 950                         pkts, bytes);
 951         return HASHWALK_CONTINUE;
 952 }
 953
 954 static int zebra_pbr_show_ipset_walkcb(struct hash_bucket *bucket, void *arg)
 955 {
 956         struct zebra_pbr_env_display *uniqueipset =
 957                 (struct zebra_pbr_env_display *)arg;
 958         struct zebra_pbr_ipset *zpi = (struct zebra_pbr_ipset *)bucket->data;
 959         struct zebra_pbr_ipset_entry_unique_display unique;
 960         struct vty *vty = uniqueipset->vty;
 961         struct zebra_ns *zns = uniqueipset->zns;
 962
 963         vty_out(vty, "IPset %s type %s\n", zpi->ipset_name,
 964                 zebra_pbr_ipset_type2str(zpi->type));
 965         unique.vty = vty;
 966         unique.zpi = zpi;
 967         unique.zns = zns;
 968         hash_walk(zrouter.ipset_entry_hash, zebra_pbr_show_ipset_entry_walkcb,
 969                   &unique);
 970         vty_out(vty, "\n");
 971         return HASHWALK_CONTINUE;
 972 }
 973
 974 size_t zebra_pbr_tcpflags_snprintf(char *buffer, size_t len,
 975                                    uint16_t tcp_val)
 976 {
 977         size_t len_written = 0;
 978         static struct message nt = {0};
 979         const struct message *pnt;
 980         int incr = 0;
 981
 982         for (pnt = tcp_value_str;
 983              memcmp(pnt, &nt, sizeof(struct message)); pnt++)
 984                 if (pnt->key & tcp_val) {
 985                         len_written += snprintf(buffer + len_written,
 986                                                 len - len_written,
 987                                                 "%s%s", incr ?
 988                                                 ",":"", pnt->str);
 989                         incr++;
 990                 }
 991         return len_written;
 992 }
 993
 994 /*
 995  */
 996 void zebra_pbr_show_ipset_list(struct vty *vty, char *ipsetname)
 997 {
 998         struct zebra_pbr_ipset *zpi;
 999         struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT);
1000         struct zebra_pbr_ipset_entry_unique_display unique;
1001         struct zebra_pbr_env_display uniqueipset;
1002
1003         if (ipsetname) {
1004                 zpi = zebra_pbr_lookup_ipset_pername(ipsetname);
1005                 if (!zpi) {
1006                         vty_out(vty, "No IPset %s found\n", ipsetname);
1007                         return;
1008                 }
1009                 vty_out(vty, "IPset %s type %s\n", ipsetname,
1010                         zebra_pbr_ipset_type2str(zpi->type));
1011
1012                 unique.vty = vty;
1013                 unique.zpi = zpi;
1014                 unique.zns = zns;
1015                 hash_walk(zrouter.ipset_entry_hash,
1016                           zebra_pbr_show_ipset_entry_walkcb, &unique);
1017                 return;
1018         }
1019         uniqueipset.zns = zns;
1020         uniqueipset.vty = vty;
1021         uniqueipset.name = NULL;
1022         hash_walk(zrouter.ipset_hash, zebra_pbr_show_ipset_walkcb,
1023                   &uniqueipset);
1024 }
1025
1026 struct pbr_rule_fwmark_lookup {
1027         struct zebra_pbr_rule *ptr;
1028         uint32_t fwmark;
1029 };
1030
1031 static int zebra_pbr_rule_lookup_fwmark_walkcb(struct hash_bucket *bucket,
1032                                                void *arg)
1033 {
1034         struct pbr_rule_fwmark_lookup *iprule =
1035                 (struct pbr_rule_fwmark_lookup *)arg;
1036         struct zebra_pbr_rule *zpr = (struct zebra_pbr_rule *)bucket->data;
1037
1038         if (iprule->fwmark == zpr->rule.filter.fwmark) {
1039                 iprule->ptr = zpr;
1040                 return HASHWALK_ABORT;
1041         }
1042         return HASHWALK_CONTINUE;
1043 }
1044
1045 static void zebra_pbr_show_iptable_unit(struct zebra_pbr_iptable *iptable,
1046                                        struct vty *vty,
1047                                        struct zebra_ns *zns)
1048 {
1049         int ret;
1050         uint64_t pkts = 0, bytes = 0;
1051
1052         vty_out(vty, "IPtable %s action %s (%u)\n", iptable->ipset_name,
1053                 iptable->action == ZEBRA_IPTABLES_DROP ? "drop" : "redirect",
1054                 iptable->unique);
1055         if (iptable->type == IPSET_NET_PORT ||
1056             iptable->type == IPSET_NET_PORT_NET) {
1057                 if (!(iptable->filter_bm & MATCH_ICMP_SET)) {
1058                         if (iptable->filter_bm & PBR_FILTER_DST_PORT)
1059                                 vty_out(vty, "\t lookup dst port\n");
1060                         else if (iptable->filter_bm & PBR_FILTER_SRC_PORT)
1061                                 vty_out(vty, "\t lookup src port\n");
1062                 }
1063         }
1064         if (iptable->pkt_len_min || iptable->pkt_len_max) {
1065                 if (!iptable->pkt_len_max)
1066                         vty_out(vty, "\t pkt len %u\n",
1067                                 iptable->pkt_len_min);
1068                 else
1069                         vty_out(vty, "\t pkt len [%u;%u]\n",
1070                                 iptable->pkt_len_min,
1071                                 iptable->pkt_len_max);
1072         }
1073         if (iptable->tcp_flags || iptable->tcp_mask_flags) {
1074                 char tcp_flag_str[64];
1075                 char tcp_flag_mask_str[64];
1076
1077                 zebra_pbr_tcpflags_snprintf(tcp_flag_str,
1078                                             sizeof(tcp_flag_str),
1079                                             iptable->tcp_flags);
1080                 zebra_pbr_tcpflags_snprintf(tcp_flag_mask_str,
1081                                             sizeof(tcp_flag_mask_str),
1082                                             iptable->tcp_mask_flags);
1083                 vty_out(vty, "\t tcpflags [%s/%s]\n",
1084                         tcp_flag_str, tcp_flag_mask_str);
1085         }
1086         if (iptable->filter_bm & (MATCH_DSCP_SET | MATCH_DSCP_INVERSE_SET)) {
1087                 vty_out(vty, "\t dscp %s %d\n",
1088                         iptable->filter_bm & MATCH_DSCP_INVERSE_SET ?
1089                         "not" : "", iptable->dscp_value);
1090         }
1091         if (iptable->fragment) {
1092                 char val_str[10];
1093
1094                 sprintf(val_str, "%d", iptable->fragment);
1095                 vty_out(vty, "\t fragment%s %s\n",
1096                         iptable->filter_bm & MATCH_FRAGMENT_INVERSE_SET ?
1097                         " not" : "", lookup_msg(fragment_value_str,
1098                                                iptable->fragment, val_str));
1099         }
1100         if (iptable->protocol) {
1101                 vty_out(vty, "\t protocol %d\n",
1102                         iptable->protocol);
1103         }
1104         ret = hook_call(zebra_pbr_iptable_get_stat, iptable, &pkts,
1105                         &bytes);
1106         if (ret && pkts > 0)
1107                 vty_out(vty, "\t pkts %" PRIu64 ", bytes %" PRIu64"\n",
1108                         pkts, bytes);
1109         if (iptable->action != ZEBRA_IPTABLES_DROP) {
1110                 struct pbr_rule_fwmark_lookup prfl;
1111
1112                 prfl.fwmark = iptable->fwmark;
1113                 prfl.ptr = NULL;
1114                 hash_walk(zrouter.rules_hash,
1115                           &zebra_pbr_rule_lookup_fwmark_walkcb, &prfl);
1116                 if (prfl.ptr) {
1117                         struct zebra_pbr_rule *zpr = prfl.ptr;
1118
1119                         vty_out(vty, "\t table %u, fwmark %u\n",
1120                                 zpr->rule.action.table,
1121                                 prfl.fwmark);
1122                 }
1123         }
1124 }
1125
1126 static int zebra_pbr_show_iptable_walkcb(struct hash_bucket *bucket, void *arg)
1127 {
1128         struct zebra_pbr_iptable *iptable =
1129                 (struct zebra_pbr_iptable *)bucket->data;
1130         struct zebra_pbr_env_display *env = (struct zebra_pbr_env_display *)arg;
1131         struct vty *vty = env->vty;
1132         struct zebra_ns *zns = env->zns;
1133         char *iptable_name = env->name;
1134
1135         if (!iptable_name)
1136                 zebra_pbr_show_iptable_unit(iptable, vty, zns);
1137         else if (!strncmp(iptable_name,
1138                           iptable->ipset_name,
1139                           ZEBRA_IPSET_NAME_SIZE))
1140                 zebra_pbr_show_iptable_unit(iptable, vty, zns);
1141         return HASHWALK_CONTINUE;
1142 }
1143
1144 void zebra_pbr_show_iptable(struct vty *vty, char *iptable_name)
1145 {
1146         struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT);
1147         struct zebra_pbr_env_display env;
1148
1149         env.vty = vty;
1150         env.zns = zns;
1151         env.name = iptable_name;
1152         hash_walk(zrouter.iptable_hash, zebra_pbr_show_iptable_walkcb, &env);
1153 }
1154
1155 void zebra_pbr_iptable_update_interfacelist(struct stream *s,
1156                                             struct zebra_pbr_iptable *zpi)
1157 {
1158         uint32_t i = 0, index;
1159         struct interface *ifp;
1160         char *name;
1161
1162         for (i = 0; i < zpi->nb_interface; i++) {
1163                 STREAM_GETL(s, index);
1164                 ifp = if_lookup_by_index(index, zpi->vrf_id);
1165                 if (!ifp)
1166                         continue;
1167                 name = XSTRDUP(MTYPE_PBR_IPTABLE_IFNAME, ifp->name);
1168                 listnode_add(zpi->interface_name_list, name);
1169         }
1170 stream_failure:
1171         return;
1172 }