isisd/isis_northbound.c

   1 /*
   2  * Copyright (C) 2001,2002   Sampo Saaristo
   3  *                           Tampere University of Technology
   4  *                           Institute of Communications Engineering
   5  * Copyright (C) 2018        Volta Networks
   6  *                           Emanuele Di Pascale
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the Free
  10  * Software Foundation; either version 2 of the License, or (at your option)
  11  * any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  * more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; see the file COPYING; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 #include <zebra.h>
  24 #include "northbound.h"
  25 #include "libfrr.h"
  26 #include "linklist.h"
  27 #include "log.h"
  28 #include "isisd/dict.h"
  29 #include "isisd/isis_constants.h"
  30 #include "isisd/isis_common.h"
  31 #include "isisd/isis_flags.h"
  32 #include "isisd/isis_circuit.h"
  33 #include "isisd/isisd.h"
  34 #include "isisd/isis_lsp.h"
  35 #include "isisd/isis_pdu.h"
  36 #include "isisd/isis_dynhn.h"
  37 #include "isisd/isis_misc.h"
  38 #include "isisd/isis_csm.h"
  39 #include "isisd/isis_adjacency.h"
  40 #include "isisd/isis_spf.h"
  41 #include "isisd/isis_te.h"
  42 #include "isisd/isis_memory.h"
  43 #include "isisd/isis_mt.h"
  44 #include "isisd/isis_cli.h"
  45 #include "isisd/isis_redist.h"
  46 #include "lib/spf_backoff.h"
  47 #include "lib/lib_errors.h"
  48 #include "lib/vrf.h"
  49
  50 /*
  51  * XPath: /frr-isisd:isis/instance
  52  */
  53 static int isis_instance_create(enum nb_event event,
  54                                 const struct lyd_node *dnode,
  55                                 union nb_resource *resource)
  56 {
  57         struct isis_area *area;
  58         const char *area_tag;
  59
  60         if (event != NB_EV_APPLY)
  61                 return NB_OK;
  62
  63         area_tag = yang_dnode_get_string(dnode, "./area-tag");
  64         area = isis_area_lookup(area_tag);
  65         if (area)
  66                 return NB_ERR_INCONSISTENCY;
  67
  68         area = isis_area_create(area_tag);
  69         /* save area in dnode to avoid looking it up all the time */
  70         yang_dnode_set_entry(dnode, area);
  71
  72         return NB_OK;
  73 }
  74
  75 static int isis_instance_delete(enum nb_event event,
  76                                 const struct lyd_node *dnode)
  77 {
  78         const char *area_tag;
  79
  80         if (event != NB_EV_APPLY)
  81                 return NB_OK;
  82
  83         area_tag = yang_dnode_get_string(dnode, "./area-tag");
  84         isis_area_destroy(area_tag);
  85
  86         return NB_OK;
  87 }
  88
  89 /*
  90  * XPath: /frr-isisd:isis/instance/is-type
  91  */
  92 static int isis_instance_is_type_modify(enum nb_event event,
  93                                         const struct lyd_node *dnode,
  94                                         union nb_resource *resource)
  95 {
  96         struct isis_area *area;
  97         int type;
  98
  99         if (event != NB_EV_APPLY)
 100                 return NB_OK;
 101
 102         area = yang_dnode_get_entry(dnode, true);
 103         type = yang_dnode_get_enum(dnode, NULL);
 104         isis_area_is_type_set(area, type);
 105
 106         return NB_OK;
 107 }
 108
 109 /*
 110  * XPath: /frr-isisd:isis/instance/area-address
 111  */
 112 static int isis_instance_area_address_create(enum nb_event event,
 113                                              const struct lyd_node *dnode,
 114                                              union nb_resource *resource)
 115 {
 116         struct isis_area *area;
 117         struct area_addr addr, *addrr = NULL, *addrp = NULL;
 118         struct listnode *node;
 119         uint8_t buff[255];
 120         const char *net_title = yang_dnode_get_string(dnode, NULL);
 121
 122         switch (event) {
 123         case NB_EV_VALIDATE:
 124                 addr.addr_len = dotformat2buff(buff, net_title);
 125                 memcpy(addr.area_addr, buff, addr.addr_len);
 126                 if (addr.area_addr[addr.addr_len - 1] != 0) {
 127                         flog_warn(
 128                                 EC_LIB_NB_CB_CONFIG_VALIDATE,
 129                                 "nsel byte (last byte) in area address must be 0");
 130                         return NB_ERR_VALIDATION;
 131                 }
 132                 if (isis->sysid_set) {
 133                         /* Check that the SystemID portions match */
 134                         if (memcmp(isis->sysid, GETSYSID((&addr)),
 135                                    ISIS_SYS_ID_LEN)) {
 136                                 flog_warn(
 137                                         EC_LIB_NB_CB_CONFIG_VALIDATE,
 138                                         "System ID must not change when defining additional area addresses");
 139                                 return NB_ERR_VALIDATION;
 140                         }
 141                 }
 142                 break;
 143         case NB_EV_PREPARE:
 144                 addrr = XMALLOC(MTYPE_ISIS_AREA_ADDR, sizeof(struct area_addr));
 145                 addrr->addr_len = dotformat2buff(buff, net_title);
 146                 memcpy(addrr->area_addr, buff, addrr->addr_len);
 147                 resource->ptr = addrr;
 148                 break;
 149         case NB_EV_ABORT:
 150                 XFREE(MTYPE_ISIS_AREA_ADDR, resource->ptr);
 151                 break;
 152         case NB_EV_APPLY:
 153                 area = yang_dnode_get_entry(dnode, true);
 154                 addrr = resource->ptr;
 155
 156                 if (isis->sysid_set == 0) {
 157                         /*
 158                          * First area address - get the SystemID for this router
 159                          */
 160                         memcpy(isis->sysid, GETSYSID(addrr), ISIS_SYS_ID_LEN);
 161                         isis->sysid_set = 1;
 162                 } else {
 163                         /* check that we don't already have this address */
 164                         for (ALL_LIST_ELEMENTS_RO(area->area_addrs, node,
 165                                                   addrp)) {
 166                                 if ((addrp->addr_len + ISIS_SYS_ID_LEN
 167                                      + ISIS_NSEL_LEN)
 168                                     != (addrr->addr_len))
 169                                         continue;
 170                                 if (!memcmp(addrp->area_addr, addrr->area_addr,
 171                                             addrr->addr_len)) {
 172                                         XFREE(MTYPE_ISIS_AREA_ADDR, addrr);
 173                                         return NB_OK; /* silent fail */
 174                                 }
 175                         }
 176                 }
 177
 178                 /*Forget the systemID part of the address */
 179                 addrr->addr_len -= (ISIS_SYS_ID_LEN + ISIS_NSEL_LEN);
 180                 assert(area->area_addrs); /* to silence scan-build sillyness */
 181                 listnode_add(area->area_addrs, addrr);
 182
 183                 /* only now we can safely generate our LSPs for this area */
 184                 if (listcount(area->area_addrs) > 0) {
 185                         if (area->is_type & IS_LEVEL_1)
 186                                 lsp_generate(area, IS_LEVEL_1);
 187                         if (area->is_type & IS_LEVEL_2)
 188                                 lsp_generate(area, IS_LEVEL_2);
 189                 }
 190                 break;
 191         }
 192
 193         return NB_OK;
 194 }
 195
 196 static int isis_instance_area_address_delete(enum nb_event event,
 197                                              const struct lyd_node *dnode)
 198 {
 199         struct area_addr addr, *addrp = NULL;
 200         struct listnode *node;
 201         uint8_t buff[255];
 202         struct isis_area *area;
 203         const char *net_title;
 204
 205         if (event != NB_EV_APPLY)
 206                 return NB_OK;
 207
 208         net_title = yang_dnode_get_string(dnode, NULL);
 209         addr.addr_len = dotformat2buff(buff, net_title);
 210         memcpy(addr.area_addr, buff, (int)addr.addr_len);
 211         area = yang_dnode_get_entry(dnode, true);
 212         for (ALL_LIST_ELEMENTS_RO(area->area_addrs, node, addrp)) {
 213                 if ((addrp->addr_len + ISIS_SYS_ID_LEN + 1) == addr.addr_len
 214                     && !memcmp(addrp->area_addr, addr.area_addr, addr.addr_len))
 215                         break;
 216         }
 217         if (!addrp)
 218                 return NB_ERR_INCONSISTENCY;
 219
 220         listnode_delete(area->area_addrs, addrp);
 221         XFREE(MTYPE_ISIS_AREA_ADDR, addrp);
 222         /*
 223          * Last area address - reset the SystemID for this router
 224          */
 225         if (listcount(area->area_addrs) == 0) {
 226                 memset(isis->sysid, 0, ISIS_SYS_ID_LEN);
 227                 isis->sysid_set = 0;
 228                 if (isis->debugs & DEBUG_EVENTS)
 229                         zlog_debug("Router has no SystemID");
 230         }
 231
 232         return NB_OK;
 233 }
 234
 235 /*
 236  * XPath: /frr-isisd:isis/instance/dynamic-hostname
 237  */
 238 static int isis_instance_dynamic_hostname_modify(enum nb_event event,
 239                                                  const struct lyd_node *dnode,
 240                                                  union nb_resource *resource)
 241 {
 242         struct isis_area *area;
 243
 244         if (event != NB_EV_APPLY)
 245                 return NB_OK;
 246
 247         area = yang_dnode_get_entry(dnode, true);
 248         isis_area_dynhostname_set(area, yang_dnode_get_bool(dnode, NULL));
 249
 250         return NB_OK;
 251 }
 252
 253 /*
 254  * XPath: /frr-isisd:isis/instance/attached
 255  */
 256 static int isis_instance_attached_create(enum nb_event event,
 257                                          const struct lyd_node *dnode,
 258                                          union nb_resource *resource)
 259 {
 260         struct isis_area *area;
 261
 262         if (event != NB_EV_APPLY)
 263                 return NB_OK;
 264
 265         area = yang_dnode_get_entry(dnode, true);
 266         isis_area_attached_bit_set(area, true);
 267
 268         return NB_OK;
 269 }
 270
 271 static int isis_instance_attached_delete(enum nb_event event,
 272                                          const struct lyd_node *dnode)
 273 {
 274         struct isis_area *area;
 275
 276         if (event != NB_EV_APPLY)
 277                 return NB_OK;
 278
 279         area = yang_dnode_get_entry(dnode, true);
 280         isis_area_attached_bit_set(area, false);
 281
 282         return NB_OK;
 283 }
 284
 285 /*
 286  * XPath: /frr-isisd:isis/instance/overload
 287  */
 288 static int isis_instance_overload_create(enum nb_event event,
 289                                          const struct lyd_node *dnode,
 290                                          union nb_resource *resource)
 291 {
 292         struct isis_area *area;
 293
 294         if (event != NB_EV_APPLY)
 295                 return NB_OK;
 296
 297         area = yang_dnode_get_entry(dnode, true);
 298         isis_area_overload_bit_set(area, true);
 299
 300         return NB_OK;
 301 }
 302
 303 static int isis_instance_overload_delete(enum nb_event event,
 304                                          const struct lyd_node *dnode)
 305 {
 306         struct isis_area *area;
 307
 308         if (event != NB_EV_APPLY)
 309                 return NB_OK;
 310
 311         area = yang_dnode_get_entry(dnode, true);
 312         isis_area_overload_bit_set(area, false);
 313
 314         return NB_OK;
 315 }
 316
 317 /*
 318  * XPath: /frr-isisd:isis/instance/metric-style
 319  */
 320 static int isis_instance_metric_style_modify(enum nb_event event,
 321                                              const struct lyd_node *dnode,
 322                                              union nb_resource *resource)
 323 {
 324         struct isis_area *area;
 325         bool old_metric, new_metric;
 326         enum isis_metric_style metric_style = yang_dnode_get_enum(dnode, NULL);
 327
 328         if (event != NB_EV_APPLY)
 329                 return NB_OK;
 330
 331         area = yang_dnode_get_entry(dnode, true);
 332         old_metric = (metric_style == ISIS_WIDE_METRIC) ? false : true;
 333         new_metric = (metric_style == ISIS_NARROW_METRIC) ? false : true;
 334         isis_area_metricstyle_set(area, old_metric, new_metric);
 335
 336         return NB_OK;
 337 }
 338
 339 /*
 340  * XPath: /frr-isisd:isis/instance/purge-originator
 341  */
 342 static int isis_instance_purge_originator_create(enum nb_event event,
 343                                                  const struct lyd_node *dnode,
 344                                                  union nb_resource *resource)
 345 {
 346         /* TODO: implement me. */
 347         return NB_OK;
 348 }
 349
 350 static int isis_instance_purge_originator_delete(enum nb_event event,
 351                                                  const struct lyd_node *dnode)
 352 {
 353         /* TODO: implement me. */
 354         return NB_OK;
 355 }
 356
 357 /*
 358  * XPath: /frr-isisd:isis/instance/lsp/mtu
 359  */
 360 static int isis_instance_lsp_mtu_modify(enum nb_event event,
 361                                         const struct lyd_node *dnode,
 362                                         union nb_resource *resource)
 363 {
 364         /* TODO: implement me. */
 365         return NB_OK;
 366 }
 367
 368 /*
 369  * XPath: /frr-isisd:isis/instance/lsp/refresh-interval/level-1
 370  */
 371 static int
 372 isis_instance_lsp_refresh_interval_level_1_modify(enum nb_event event,
 373                                                   const struct lyd_node *dnode,
 374                                                   union nb_resource *resource)
 375 {
 376         struct isis_area *area;
 377         uint16_t refr_int;
 378
 379         if (event != NB_EV_APPLY)
 380                 return NB_OK;
 381
 382         refr_int = yang_dnode_get_uint16(dnode, NULL);
 383         area = yang_dnode_get_entry(dnode, true);
 384         isis_area_lsp_refresh_set(area, IS_LEVEL_1, refr_int);
 385
 386         return NB_OK;
 387 }
 388
 389 /*
 390  * XPath: /frr-isisd:isis/instance/lsp/refresh-interval/level-2
 391  */
 392 static int
 393 isis_instance_lsp_refresh_interval_level_2_modify(enum nb_event event,
 394                                                   const struct lyd_node *dnode,
 395                                                   union nb_resource *resource)
 396 {
 397         struct isis_area *area;
 398         uint16_t refr_int;
 399
 400         if (event != NB_EV_APPLY)
 401                 return NB_OK;
 402
 403         refr_int = yang_dnode_get_uint16(dnode, NULL);
 404         area = yang_dnode_get_entry(dnode, true);
 405         isis_area_lsp_refresh_set(area, IS_LEVEL_2, refr_int);
 406
 407         return NB_OK;
 408 }
 409
 410 /*
 411  * XPath: /frr-isisd:isis/instance/lsp/maximum-lifetime/level-1
 412  */
 413 static int
 414 isis_instance_lsp_maximum_lifetime_level_1_modify(enum nb_event event,
 415                                                   const struct lyd_node *dnode,
 416                                                   union nb_resource *resource)
 417 {
 418         /* TODO: implement me. */
 419         return NB_OK;
 420 }
 421
 422 /*
 423  * XPath: /frr-isisd:isis/instance/lsp/maximum-lifetime/level-2
 424  */
 425 static int
 426 isis_instance_lsp_maximum_lifetime_level_2_modify(enum nb_event event,
 427                                                   const struct lyd_node *dnode,
 428                                                   union nb_resource *resource)
 429 {
 430         /* TODO: implement me. */
 431         return NB_OK;
 432 }
 433
 434 /*
 435  * XPath: /frr-isisd:isis/instance/lsp/generation-interval/level-1
 436  */
 437 static int isis_instance_lsp_generation_interval_level_1_modify(
 438         enum nb_event event, const struct lyd_node *dnode,
 439         union nb_resource *resource)
 440 {
 441         struct isis_area *area;
 442         uint16_t gen_int;
 443
 444         if (event != NB_EV_APPLY)
 445                 return NB_OK;
 446
 447         gen_int = yang_dnode_get_uint16(dnode, NULL);
 448         area = yang_dnode_get_entry(dnode, true);
 449         area->lsp_gen_interval[0] = gen_int;
 450
 451         return NB_OK;
 452 }
 453
 454 /*
 455  * XPath: /frr-isisd:isis/instance/lsp/generation-interval/level-2
 456  */
 457 static int isis_instance_lsp_generation_interval_level_2_modify(
 458         enum nb_event event, const struct lyd_node *dnode,
 459         union nb_resource *resource)
 460 {
 461         struct isis_area *area;
 462         uint16_t gen_int;
 463
 464         if (event != NB_EV_APPLY)
 465                 return NB_OK;
 466
 467         gen_int = yang_dnode_get_uint16(dnode, NULL);
 468         area = yang_dnode_get_entry(dnode, true);
 469         area->lsp_gen_interval[1] = gen_int;
 470
 471         return NB_OK;
 472 }
 473
 474 /*
 475  * XPath: /frr-isisd:isis/instance/spf/ietf-backoff-delay
 476  */
 477 static int
 478 isis_instance_spf_ietf_backoff_delay_create(enum nb_event event,
 479                                             const struct lyd_node *dnode,
 480                                             union nb_resource *resource)
 481 {
 482         /* TODO: implement me. */
 483         return NB_OK;
 484 }
 485
 486 static int
 487 isis_instance_spf_ietf_backoff_delay_delete(enum nb_event event,
 488                                             const struct lyd_node *dnode)
 489 {
 490         /* TODO: implement me. */
 491         return NB_OK;
 492 }
 493
 494 /*
 495  * XPath: /frr-isisd:isis/instance/spf/ietf-backoff-delay/init-delay
 496  */
 497 static int isis_instance_spf_ietf_backoff_delay_init_delay_modify(
 498         enum nb_event event, const struct lyd_node *dnode,
 499         union nb_resource *resource)
 500 {
 501         /* TODO: implement me. */
 502         return NB_OK;
 503 }
 504
 505 /*
 506  * XPath: /frr-isisd:isis/instance/spf/ietf-backoff-delay/short-delay
 507  */
 508 static int isis_instance_spf_ietf_backoff_delay_short_delay_modify(
 509         enum nb_event event, const struct lyd_node *dnode,
 510         union nb_resource *resource)
 511 {
 512         /* TODO: implement me. */
 513         return NB_OK;
 514 }
 515
 516 /*
 517  * XPath: /frr-isisd:isis/instance/spf/ietf-backoff-delay/long-delay
 518  */
 519 static int isis_instance_spf_ietf_backoff_delay_long_delay_modify(
 520         enum nb_event event, const struct lyd_node *dnode,
 521         union nb_resource *resource)
 522 {
 523         /* TODO: implement me. */
 524         return NB_OK;
 525 }
 526
 527 /*
 528  * XPath: /frr-isisd:isis/instance/spf/ietf-backoff-delay/hold-down
 529  */
 530 static int isis_instance_spf_ietf_backoff_delay_hold_down_modify(
 531         enum nb_event event, const struct lyd_node *dnode,
 532         union nb_resource *resource)
 533 {
 534         /* TODO: implement me. */
 535         return NB_OK;
 536 }
 537
 538 /*
 539  * XPath: /frr-isisd:isis/instance/spf/ietf-backoff-delay/time-to-learn
 540  */
 541 static int isis_instance_spf_ietf_backoff_delay_time_to_learn_modify(
 542         enum nb_event event, const struct lyd_node *dnode,
 543         union nb_resource *resource)
 544 {
 545         /* TODO: implement me. */
 546         return NB_OK;
 547 }
 548
 549 /*
 550  * XPath: /frr-isisd:isis/instance/spf/minimum-interval/level-1
 551  */
 552 static int
 553 isis_instance_spf_minimum_interval_level_1_modify(enum nb_event event,
 554                                                   const struct lyd_node *dnode,
 555                                                   union nb_resource *resource)
 556 {
 557         /* TODO: implement me. */
 558         return NB_OK;
 559 }
 560
 561 /*
 562  * XPath: /frr-isisd:isis/instance/spf/minimum-interval/level-2
 563  */
 564 static int
 565 isis_instance_spf_minimum_interval_level_2_modify(enum nb_event event,
 566                                                   const struct lyd_node *dnode,
 567                                                   union nb_resource *resource)
 568 {
 569         /* TODO: implement me. */
 570         return NB_OK;
 571 }
 572
 573 /*
 574  * XPath: /frr-isisd:isis/instance/area-password
 575  */
 576 static void area_password_apply_finish(const struct lyd_node *dnode)
 577 {
 578         const char *password = yang_dnode_get_string(dnode, "./password");
 579         struct isis_area *area = yang_dnode_get_entry(dnode, true);
 580         int pass_type = yang_dnode_get_enum(dnode, "./password-type");
 581         uint8_t snp_auth = yang_dnode_get_enum(dnode, "./authenticate-snp");
 582
 583         switch (pass_type) {
 584         case ISIS_PASSWD_TYPE_CLEARTXT:
 585                 isis_area_passwd_cleartext_set(area, IS_LEVEL_1, password,
 586                                                snp_auth);
 587                 break;
 588         case ISIS_PASSWD_TYPE_HMAC_MD5:
 589                 isis_area_passwd_hmac_md5_set(area, IS_LEVEL_1, password,
 590                                               snp_auth);
 591                 break;
 592         }
 593 }
 594
 595 static int isis_instance_area_password_create(enum nb_event event,
 596                                               const struct lyd_node *dnode,
 597                                               union nb_resource *resource)
 598 {
 599         /* actual setting is done in apply_finish */
 600         return NB_OK;
 601 }
 602
 603 static int isis_instance_area_password_delete(enum nb_event event,
 604                                               const struct lyd_node *dnode)
 605 {
 606         struct isis_area *area;
 607
 608         if (event != NB_EV_APPLY)
 609                 return NB_OK;
 610
 611         area = yang_dnode_get_entry(dnode, true);
 612         isis_area_passwd_unset(area, IS_LEVEL_1);
 613
 614         return NB_OK;
 615 }
 616
 617 /*
 618  * XPath: /frr-isisd:isis/instance/area-password/password
 619  */
 620 static int
 621 isis_instance_area_password_password_modify(enum nb_event event,
 622                                             const struct lyd_node *dnode,
 623                                             union nb_resource *resource)
 624 {
 625         /* actual setting is done in apply_finish */
 626         return NB_OK;
 627 }
 628
 629 /*
 630  * XPath: /frr-isisd:isis/instance/area-password/password-type
 631  */
 632 static int
 633 isis_instance_area_password_password_type_modify(enum nb_event event,
 634                                                  const struct lyd_node *dnode,
 635                                                  union nb_resource *resource)
 636 {
 637         /* actual setting is done in apply_finish */
 638         return NB_OK;
 639 }
 640
 641 /*
 642  * XPath: /frr-isisd:isis/instance/area-password/authenticate-snp
 643  */
 644 static int isis_instance_area_password_authenticate_snp_modify(
 645         enum nb_event event, const struct lyd_node *dnode,
 646         union nb_resource *resource)
 647 {
 648         /* actual setting is done in apply_finish */
 649         return NB_OK;
 650 }
 651
 652 /*
 653  * XPath: /frr-isisd:isis/instance/domain-password
 654  */
 655 static void domain_password_apply_finish(const struct lyd_node *dnode)
 656 {
 657         const char *password = yang_dnode_get_string(dnode, "./password");
 658         struct isis_area *area = yang_dnode_get_entry(dnode, true);
 659         int pass_type = yang_dnode_get_enum(dnode, "./password-type");
 660         uint8_t snp_auth = yang_dnode_get_enum(dnode, "./authenticate-snp");
 661
 662         switch (pass_type) {
 663         case ISIS_PASSWD_TYPE_CLEARTXT:
 664                 isis_area_passwd_cleartext_set(area, IS_LEVEL_2, password,
 665                                                snp_auth);
 666                 break;
 667         case ISIS_PASSWD_TYPE_HMAC_MD5:
 668                 isis_area_passwd_hmac_md5_set(area, IS_LEVEL_2, password,
 669                                               snp_auth);
 670                 break;
 671         }
 672 }
 673
 674 static int isis_instance_domain_password_create(enum nb_event event,
 675                                                 const struct lyd_node *dnode,
 676                                                 union nb_resource *resource)
 677 {
 678         /* actual setting is done in apply_finish */
 679         return NB_OK;
 680 }
 681
 682 static int isis_instance_domain_password_delete(enum nb_event event,
 683                                                 const struct lyd_node *dnode)
 684 {
 685         struct isis_area *area;
 686
 687         if (event != NB_EV_APPLY)
 688                 return NB_OK;
 689
 690         area = yang_dnode_get_entry(dnode, true);
 691         isis_area_passwd_unset(area, IS_LEVEL_2);
 692
 693         return NB_OK;
 694 }
 695
 696 /*
 697  * XPath: /frr-isisd:isis/instance/domain-password/password
 698  */
 699 static int
 700 isis_instance_domain_password_password_modify(enum nb_event event,
 701                                               const struct lyd_node *dnode,
 702                                               union nb_resource *resource)
 703 {
 704         /* actual setting is done in apply_finish */
 705         return NB_OK;
 706 }
 707
 708 /*
 709  * XPath: /frr-isisd:isis/instance/domain-password/password-type
 710  */
 711 static int
 712 isis_instance_domain_password_password_type_modify(enum nb_event event,
 713                                                    const struct lyd_node *dnode,
 714                                                    union nb_resource *resource)
 715 {
 716         /* actual setting is done in apply_finish */
 717         return NB_OK;
 718 }
 719
 720 /*
 721  * XPath: /frr-isisd:isis/instance/domain-password/authenticate-snp
 722  */
 723 static int isis_instance_domain_password_authenticate_snp_modify(
 724         enum nb_event event, const struct lyd_node *dnode,
 725         union nb_resource *resource)
 726 {
 727         /* actual setting is done in apply_finish */
 728         return NB_OK;
 729 }
 730
 731 /*
 732  * XPath: /frr-isisd:isis/instance/default-information-originate/ipv4
 733  */
 734 static int isis_instance_default_information_originate_ipv4_create(
 735         enum nb_event event, const struct lyd_node *dnode,
 736         union nb_resource *resource)
 737 {
 738         /* TODO: implement me. */
 739         return NB_OK;
 740 }
 741
 742 static int isis_instance_default_information_originate_ipv4_delete(
 743         enum nb_event event, const struct lyd_node *dnode)
 744 {
 745         /* TODO: implement me. */
 746         return NB_OK;
 747 }
 748
 749 /*
 750  * XPath: /frr-isisd:isis/instance/default-information-originate/ipv4/always
 751  */
 752 static int isis_instance_default_information_originate_ipv4_always_create(
 753         enum nb_event event, const struct lyd_node *dnode,
 754         union nb_resource *resource)
 755 {
 756         /* TODO: implement me. */
 757         return NB_OK;
 758 }
 759
 760 static int isis_instance_default_information_originate_ipv4_always_delete(
 761         enum nb_event event, const struct lyd_node *dnode)
 762 {
 763         /* TODO: implement me. */
 764         return NB_OK;
 765 }
 766
 767 /*
 768  * XPath: /frr-isisd:isis/instance/default-information-originate/ipv4/route-map
 769  */
 770 static int isis_instance_default_information_originate_ipv4_route_map_modify(
 771         enum nb_event event, const struct lyd_node *dnode,
 772         union nb_resource *resource)
 773 {
 774         /* TODO: implement me. */
 775         return NB_OK;
 776 }
 777
 778 static int isis_instance_default_information_originate_ipv4_route_map_delete(
 779         enum nb_event event, const struct lyd_node *dnode)
 780 {
 781         /* TODO: implement me. */
 782         return NB_OK;
 783 }
 784
 785 /*
 786  * XPath: /frr-isisd:isis/instance/default-information-originate/ipv4/metric
 787  */
 788 static int isis_instance_default_information_originate_ipv4_metric_modify(
 789         enum nb_event event, const struct lyd_node *dnode,
 790         union nb_resource *resource)
 791 {
 792         /* TODO: implement me. */
 793         return NB_OK;
 794 }
 795
 796 static int isis_instance_default_information_originate_ipv4_metric_delete(
 797         enum nb_event event, const struct lyd_node *dnode)
 798 {
 799         /* TODO: implement me. */
 800         return NB_OK;
 801 }
 802
 803 /*
 804  * XPath: /frr-isisd:isis/instance/default-information-originate/ipv6
 805  */
 806 static int isis_instance_default_information_originate_ipv6_create(
 807         enum nb_event event, const struct lyd_node *dnode,
 808         union nb_resource *resource)
 809 {
 810         /* TODO: implement me. */
 811         return NB_OK;
 812 }
 813
 814 static int isis_instance_default_information_originate_ipv6_delete(
 815         enum nb_event event, const struct lyd_node *dnode)
 816 {
 817         /* TODO: implement me. */
 818         return NB_OK;
 819 }
 820
 821 /*
 822  * XPath: /frr-isisd:isis/instance/default-information-originate/ipv6/always
 823  */
 824 static int isis_instance_default_information_originate_ipv6_always_create(
 825         enum nb_event event, const struct lyd_node *dnode,
 826         union nb_resource *resource)
 827 {
 828         /* TODO: implement me. */
 829         return NB_OK;
 830 }
 831
 832 static int isis_instance_default_information_originate_ipv6_always_delete(
 833         enum nb_event event, const struct lyd_node *dnode)
 834 {
 835         /* TODO: implement me. */
 836         return NB_OK;
 837 }
 838
 839 /*
 840  * XPath: /frr-isisd:isis/instance/default-information-originate/ipv6/route-map
 841  */
 842 static int isis_instance_default_information_originate_ipv6_route_map_modify(
 843         enum nb_event event, const struct lyd_node *dnode,
 844         union nb_resource *resource)
 845 {
 846         /* TODO: implement me. */
 847         return NB_OK;
 848 }
 849
 850 static int isis_instance_default_information_originate_ipv6_route_map_delete(
 851         enum nb_event event, const struct lyd_node *dnode)
 852 {
 853         /* TODO: implement me. */
 854         return NB_OK;
 855 }
 856
 857 /*
 858  * XPath: /frr-isisd:isis/instance/default-information-originate/ipv6/metric
 859  */
 860 static int isis_instance_default_information_originate_ipv6_metric_modify(
 861         enum nb_event event, const struct lyd_node *dnode,
 862         union nb_resource *resource)
 863 {
 864         /* TODO: implement me. */
 865         return NB_OK;
 866 }
 867
 868 static int isis_instance_default_information_originate_ipv6_metric_delete(
 869         enum nb_event event, const struct lyd_node *dnode)
 870 {
 871         /* TODO: implement me. */
 872         return NB_OK;
 873 }
 874
 875 /*
 876  * XPath: /frr-isisd:isis/instance/redistribute/ipv4
 877  */
 878 static int isis_instance_redistribute_ipv4_create(enum nb_event event,
 879                                                   const struct lyd_node *dnode,
 880                                                   union nb_resource *resource)
 881 {
 882         /* TODO: implement me. */
 883         return NB_OK;
 884 }
 885
 886 static int isis_instance_redistribute_ipv4_delete(enum nb_event event,
 887                                                   const struct lyd_node *dnode)
 888 {
 889         /* TODO: implement me. */
 890         return NB_OK;
 891 }
 892
 893 /*
 894  * XPath: /frr-isisd:isis/instance/redistribute/ipv4/route-map
 895  */
 896 static int
 897 isis_instance_redistribute_ipv4_route_map_modify(enum nb_event event,
 898                                                  const struct lyd_node *dnode,
 899                                                  union nb_resource *resource)
 900 {
 901         /* TODO: implement me. */
 902         return NB_OK;
 903 }
 904
 905 static int
 906 isis_instance_redistribute_ipv4_route_map_delete(enum nb_event event,
 907                                                  const struct lyd_node *dnode)
 908 {
 909         /* TODO: implement me. */
 910         return NB_OK;
 911 }
 912
 913 /*
 914  * XPath: /frr-isisd:isis/instance/redistribute/ipv4/metric
 915  */
 916 static int
 917 isis_instance_redistribute_ipv4_metric_modify(enum nb_event event,
 918                                               const struct lyd_node *dnode,
 919                                               union nb_resource *resource)
 920 {
 921         /* TODO: implement me. */
 922         return NB_OK;
 923 }
 924
 925 static int
 926 isis_instance_redistribute_ipv4_metric_delete(enum nb_event event,
 927                                               const struct lyd_node *dnode)
 928 {
 929         /* TODO: implement me. */
 930         return NB_OK;
 931 }
 932
 933 /*
 934  * XPath: /frr-isisd:isis/instance/redistribute/ipv6
 935  */
 936 static int isis_instance_redistribute_ipv6_create(enum nb_event event,
 937                                                   const struct lyd_node *dnode,
 938                                                   union nb_resource *resource)
 939 {
 940         /* TODO: implement me. */
 941         return NB_OK;
 942 }
 943
 944 static int isis_instance_redistribute_ipv6_delete(enum nb_event event,
 945                                                   const struct lyd_node *dnode)
 946 {
 947         /* TODO: implement me. */
 948         return NB_OK;
 949 }
 950
 951 /*
 952  * XPath: /frr-isisd:isis/instance/redistribute/ipv6/route-map
 953  */
 954 static int
 955 isis_instance_redistribute_ipv6_route_map_modify(enum nb_event event,
 956                                                  const struct lyd_node *dnode,
 957                                                  union nb_resource *resource)
 958 {
 959         /* TODO: implement me. */
 960         return NB_OK;
 961 }
 962
 963 static int
 964 isis_instance_redistribute_ipv6_route_map_delete(enum nb_event event,
 965                                                  const struct lyd_node *dnode)
 966 {
 967         /* TODO: implement me. */
 968         return NB_OK;
 969 }
 970
 971 /*
 972  * XPath: /frr-isisd:isis/instance/redistribute/ipv6/metric
 973  */
 974 static int
 975 isis_instance_redistribute_ipv6_metric_modify(enum nb_event event,
 976                                               const struct lyd_node *dnode,
 977                                               union nb_resource *resource)
 978 {
 979         /* TODO: implement me. */
 980         return NB_OK;
 981 }
 982
 983 static int
 984 isis_instance_redistribute_ipv6_metric_delete(enum nb_event event,
 985                                               const struct lyd_node *dnode)
 986 {
 987         /* TODO: implement me. */
 988         return NB_OK;
 989 }
 990
 991 /*
 992  * XPath: /frr-isisd:isis/instance/multi-topology/ipv4-multicast
 993  */
 994 static int
 995 isis_instance_multi_topology_ipv4_multicast_create(enum nb_event event,
 996                                                    const struct lyd_node *dnode,
 997                                                    union nb_resource *resource)
 998 {
 999         /* TODO: implement me. */
1000         return NB_OK;
1001 }
1002
1003 static int
1004 isis_instance_multi_topology_ipv4_multicast_delete(enum nb_event event,
1005                                                    const struct lyd_node *dnode)
1006 {
1007         /* TODO: implement me. */
1008         return NB_OK;
1009 }
1010
1011 /*
1012  * XPath: /frr-isisd:isis/instance/multi-topology/ipv4-multicast/overload
1013  */
1014 static int isis_instance_multi_topology_ipv4_multicast_overload_create(
1015         enum nb_event event, const struct lyd_node *dnode,
1016         union nb_resource *resource)
1017 {
1018         /* TODO: implement me. */
1019         return NB_OK;
1020 }
1021
1022 static int isis_instance_multi_topology_ipv4_multicast_overload_delete(
1023         enum nb_event event, const struct lyd_node *dnode)
1024 {
1025         /* TODO: implement me. */
1026         return NB_OK;
1027 }
1028
1029 /*
1030  * XPath: /frr-isisd:isis/instance/multi-topology/ipv4-management
1031  */
1032 static int isis_instance_multi_topology_ipv4_management_create(
1033         enum nb_event event, const struct lyd_node *dnode,
1034         union nb_resource *resource)
1035 {
1036         /* TODO: implement me. */
1037         return NB_OK;
1038 }
1039
1040 static int isis_instance_multi_topology_ipv4_management_delete(
1041         enum nb_event event, const struct lyd_node *dnode)
1042 {
1043         /* TODO: implement me. */
1044         return NB_OK;
1045 }
1046
1047 /*
1048  * XPath: /frr-isisd:isis/instance/multi-topology/ipv4-management/overload
1049  */
1050 static int isis_instance_multi_topology_ipv4_management_overload_create(
1051         enum nb_event event, const struct lyd_node *dnode,
1052         union nb_resource *resource)
1053 {
1054         /* TODO: implement me. */
1055         return NB_OK;
1056 }
1057
1058 static int isis_instance_multi_topology_ipv4_management_overload_delete(
1059         enum nb_event event, const struct lyd_node *dnode)
1060 {
1061         /* TODO: implement me. */
1062         return NB_OK;
1063 }
1064
1065 /*
1066  * XPath: /frr-isisd:isis/instance/multi-topology/ipv6-unicast
1067  */
1068 static int
1069 isis_instance_multi_topology_ipv6_unicast_create(enum nb_event event,
1070                                                  const struct lyd_node *dnode,
1071                                                  union nb_resource *resource)
1072 {
1073         /* TODO: implement me. */
1074         return NB_OK;
1075 }
1076
1077 static int
1078 isis_instance_multi_topology_ipv6_unicast_delete(enum nb_event event,
1079                                                  const struct lyd_node *dnode)
1080 {
1081         /* TODO: implement me. */
1082         return NB_OK;
1083 }
1084
1085 /*
1086  * XPath: /frr-isisd:isis/instance/multi-topology/ipv6-unicast/overload
1087  */
1088 static int isis_instance_multi_topology_ipv6_unicast_overload_create(
1089         enum nb_event event, const struct lyd_node *dnode,
1090         union nb_resource *resource)
1091 {
1092         /* TODO: implement me. */
1093         return NB_OK;
1094 }
1095
1096 static int isis_instance_multi_topology_ipv6_unicast_overload_delete(
1097         enum nb_event event, const struct lyd_node *dnode)
1098 {
1099         /* TODO: implement me. */
1100         return NB_OK;
1101 }
1102
1103 /*
1104  * XPath: /frr-isisd:isis/instance/multi-topology/ipv6-multicast
1105  */
1106 static int
1107 isis_instance_multi_topology_ipv6_multicast_create(enum nb_event event,
1108                                                    const struct lyd_node *dnode,
1109                                                    union nb_resource *resource)
1110 {
1111         /* TODO: implement me. */
1112         return NB_OK;
1113 }
1114
1115 static int
1116 isis_instance_multi_topology_ipv6_multicast_delete(enum nb_event event,
1117                                                    const struct lyd_node *dnode)
1118 {
1119         /* TODO: implement me. */
1120         return NB_OK;
1121 }
1122
1123 /*
1124  * XPath: /frr-isisd:isis/instance/multi-topology/ipv6-multicast/overload
1125  */
1126 static int isis_instance_multi_topology_ipv6_multicast_overload_create(
1127         enum nb_event event, const struct lyd_node *dnode,
1128         union nb_resource *resource)
1129 {
1130         /* TODO: implement me. */
1131         return NB_OK;
1132 }
1133
1134 static int isis_instance_multi_topology_ipv6_multicast_overload_delete(
1135         enum nb_event event, const struct lyd_node *dnode)
1136 {
1137         /* TODO: implement me. */
1138         return NB_OK;
1139 }
1140
1141 /*
1142  * XPath: /frr-isisd:isis/instance/multi-topology/ipv6-management
1143  */
1144 static int isis_instance_multi_topology_ipv6_management_create(
1145         enum nb_event event, const struct lyd_node *dnode,
1146         union nb_resource *resource)
1147 {
1148         /* TODO: implement me. */
1149         return NB_OK;
1150 }
1151
1152 static int isis_instance_multi_topology_ipv6_management_delete(
1153         enum nb_event event, const struct lyd_node *dnode)
1154 {
1155         /* TODO: implement me. */
1156         return NB_OK;
1157 }
1158
1159 /*
1160  * XPath: /frr-isisd:isis/instance/multi-topology/ipv6-management/overload
1161  */
1162 static int isis_instance_multi_topology_ipv6_management_overload_create(
1163         enum nb_event event, const struct lyd_node *dnode,
1164         union nb_resource *resource)
1165 {
1166         /* TODO: implement me. */
1167         return NB_OK;
1168 }
1169
1170 static int isis_instance_multi_topology_ipv6_management_overload_delete(
1171         enum nb_event event, const struct lyd_node *dnode)
1172 {
1173         /* TODO: implement me. */
1174         return NB_OK;
1175 }
1176
1177 /*
1178  * XPath: /frr-isisd:isis/instance/multi-topology/ipv6-dstsrc
1179  */
1180 static int
1181 isis_instance_multi_topology_ipv6_dstsrc_create(enum nb_event event,
1182                                                 const struct lyd_node *dnode,
1183                                                 union nb_resource *resource)
1184 {
1185         /* TODO: implement me. */
1186         return NB_OK;
1187 }
1188
1189 static int
1190 isis_instance_multi_topology_ipv6_dstsrc_delete(enum nb_event event,
1191                                                 const struct lyd_node *dnode)
1192 {
1193         /* TODO: implement me. */
1194         return NB_OK;
1195 }
1196
1197 /*
1198  * XPath: /frr-isisd:isis/instance/multi-topology/ipv6-dstsrc/overload
1199  */
1200 static int isis_instance_multi_topology_ipv6_dstsrc_overload_create(
1201         enum nb_event event, const struct lyd_node *dnode,
1202         union nb_resource *resource)
1203 {
1204         /* TODO: implement me. */
1205         return NB_OK;
1206 }
1207
1208 static int isis_instance_multi_topology_ipv6_dstsrc_overload_delete(
1209         enum nb_event event, const struct lyd_node *dnode)
1210 {
1211         /* TODO: implement me. */
1212         return NB_OK;
1213 }
1214
1215 /*
1216  * XPath: /frr-isisd:isis/instance/log-adjacency-changes
1217  */
1218 static int
1219 isis_instance_log_adjacency_changes_create(enum nb_event event,
1220                                            const struct lyd_node *dnode,
1221                                            union nb_resource *resource)
1222 {
1223         /* TODO: implement me. */
1224         return NB_OK;
1225 }
1226
1227 static int
1228 isis_instance_log_adjacency_changes_delete(enum nb_event event,
1229                                            const struct lyd_node *dnode)
1230 {
1231         /* TODO: implement me. */
1232         return NB_OK;
1233 }
1234
1235 /*
1236  * XPath: /frr-isisd:isis/mpls-te
1237  */
1238 static int isis_mpls_te_create(enum nb_event event,
1239                                const struct lyd_node *dnode,
1240                                union nb_resource *resource)
1241 {
1242         /* TODO: implement me. */
1243         return NB_OK;
1244 }
1245
1246 static int isis_mpls_te_delete(enum nb_event event,
1247                                const struct lyd_node *dnode)
1248 {
1249         /* TODO: implement me. */
1250         return NB_OK;
1251 }
1252
1253 /*
1254  * XPath: /frr-isisd:isis/mpls-te/router-address
1255  */
1256 static int isis_mpls_te_router_address_modify(enum nb_event event,
1257                                               const struct lyd_node *dnode,
1258                                               union nb_resource *resource)
1259 {
1260         /* TODO: implement me. */
1261         return NB_OK;
1262 }
1263
1264 static int isis_mpls_te_router_address_delete(enum nb_event event,
1265                                               const struct lyd_node *dnode)
1266 {
1267         /* TODO: implement me. */
1268         return NB_OK;
1269 }
1270
1271 /*
1272  * XPath: /frr-interface:lib/interface/frr-isisd:isis
1273  */
1274 static int lib_interface_isis_create(enum nb_event event,
1275                                      const struct lyd_node *dnode,
1276                                      union nb_resource *resource)
1277 {
1278         struct isis_area *area;
1279         struct interface *ifp;
1280         struct isis_circuit *circuit;
1281         const char *area_tag = yang_dnode_get_string(dnode, "./area-tag");
1282
1283         if (event != NB_EV_APPLY)
1284                 return NB_OK;
1285
1286         area = isis_area_lookup(area_tag);
1287         /* The area should have already be created. We are
1288          * setting the priority of the global isis area creation
1289          * slightly lower, so it should be executed first, but I
1290          * cannot rely on that so here I have to check.
1291          */
1292         if (!area) {
1293                 flog_err(
1294                         EC_LIB_NB_CB_CONFIG_APPLY,
1295                         "%s: attempt to create circuit for area %s before the area has been created",
1296                         __func__, area_tag);
1297                 abort();
1298         }
1299
1300         ifp = yang_dnode_get_entry(dnode, true);
1301         circuit = isis_circuit_create(area, ifp);
1302         assert(circuit->state == C_STATE_CONF || circuit->state == C_STATE_UP);
1303         yang_dnode_set_entry(dnode, circuit);
1304
1305         return NB_OK;
1306 }
1307
1308 static int lib_interface_isis_delete(enum nb_event event,
1309                                      const struct lyd_node *dnode)
1310 {
1311         struct isis_circuit *circuit;
1312
1313         if (event != NB_EV_APPLY)
1314                 return NB_OK;
1315
1316         circuit = yang_dnode_get_entry(dnode, true);
1317         if (!circuit)
1318                 return NB_ERR_INCONSISTENCY;
1319         /* delete circuit through csm changes */
1320         switch (circuit->state) {
1321         case C_STATE_UP:
1322                 isis_csm_state_change(IF_DOWN_FROM_Z, circuit,
1323                                       circuit->interface);
1324                 isis_csm_state_change(ISIS_DISABLE, circuit, circuit->area);
1325                 break;
1326         case C_STATE_CONF:
1327                 isis_csm_state_change(ISIS_DISABLE, circuit, circuit->area);
1328                 break;
1329         case C_STATE_INIT:
1330                 isis_csm_state_change(IF_DOWN_FROM_Z, circuit,
1331                                       circuit->interface);
1332                 break;
1333         }
1334
1335         return NB_OK;
1336 }
1337
1338 /*
1339  * XPath: /frr-interface:lib/interface/frr-isisd:isis/area-tag
1340  */
1341 static int lib_interface_isis_area_tag_modify(enum nb_event event,
1342                                               const struct lyd_node *dnode,
1343                                               union nb_resource *resource)
1344 {
1345         struct isis_circuit *circuit;
1346         struct interface *ifp;
1347         struct vrf *vrf;
1348         const char *area_tag, *ifname, *vrfname;
1349
1350         if (event == NB_EV_VALIDATE) {
1351                 /* libyang doesn't like relative paths across module boundaries
1352                  */
1353                 ifname = yang_dnode_get_string(dnode->parent->parent, "./name");
1354                 vrfname = yang_dnode_get_string(dnode->parent->parent, "./vrf");
1355                 vrf = vrf_lookup_by_name(vrfname);
1356                 assert(vrf);
1357                 ifp = if_lookup_by_name(ifname, vrf->vrf_id);
1358                 if (!ifp)
1359                         return NB_OK;
1360                 circuit = circuit_lookup_by_ifp(ifp, isis->init_circ_list);
1361                 area_tag = yang_dnode_get_string(dnode, NULL);
1362                 if (circuit && circuit->area && circuit->area->area_tag
1363                     && strcmp(circuit->area->area_tag, area_tag)) {
1364                         flog_warn(EC_LIB_NB_CB_CONFIG_VALIDATE,
1365                                   "ISIS circuit is already defined on %s",
1366                                   circuit->area->area_tag);
1367                         return NB_ERR_VALIDATION;
1368                 }
1369         }
1370
1371         return NB_OK;
1372 }
1373
1374 /*
1375  * XPath: /frr-interface:lib/interface/frr-isisd:isis/circuit-type
1376  */
1377 static int lib_interface_isis_circuit_type_modify(enum nb_event event,
1378                                                   const struct lyd_node *dnode,
1379                                                   union nb_resource *resource)
1380 {
1381         int circ_type = yang_dnode_get_enum(dnode, NULL);
1382         struct isis_circuit *circuit;
1383         struct interface *ifp;
1384         struct vrf *vrf;
1385         const char *ifname, *vrfname;
1386
1387         switch (event) {
1388         case NB_EV_VALIDATE:
1389                 /* libyang doesn't like relative paths across module boundaries
1390                  */
1391                 ifname = yang_dnode_get_string(dnode->parent->parent, "./name");
1392                 vrfname = yang_dnode_get_string(dnode->parent->parent, "./vrf");
1393                 vrf = vrf_lookup_by_name(vrfname);
1394                 assert(vrf);
1395                 ifp = if_lookup_by_name(ifname, vrf->vrf_id);
1396                 if (!ifp)
1397                         break;
1398                 circuit = circuit_lookup_by_ifp(ifp, isis->init_circ_list);
1399                 if (circuit && circuit->state == C_STATE_UP
1400                     && circuit->area->is_type != IS_LEVEL_1_AND_2
1401                     && circuit->area->is_type != circ_type) {
1402                         flog_warn(EC_LIB_NB_CB_CONFIG_VALIDATE,
1403                                   "Invalid circuit level for area %s",
1404                                   circuit->area->area_tag);
1405                         return NB_ERR_VALIDATION;
1406                 }
1407                 break;
1408         case NB_EV_PREPARE:
1409         case NB_EV_ABORT:
1410                 break;
1411         case NB_EV_APPLY:
1412                 circuit = yang_dnode_get_entry(dnode, true);
1413                 isis_circuit_is_type_set(circuit, circ_type);
1414                 break;
1415         }
1416
1417         return NB_OK;
1418 }
1419
1420 /*
1421  * XPath: /frr-interface:lib/interface/frr-isisd:isis/ipv4-routing
1422  */
1423 static int lib_interface_isis_ipv4_routing_create(enum nb_event event,
1424                                                   const struct lyd_node *dnode,
1425                                                   union nb_resource *resource)
1426 {
1427         bool ipv6;
1428         struct isis_circuit *circuit;
1429
1430         if (event != NB_EV_APPLY)
1431                 return NB_OK;
1432
1433         circuit = yang_dnode_get_entry(dnode, true);
1434         ipv6 = yang_dnode_exists(dnode, "../ipv6-routing");
1435         isis_circuit_af_set(circuit, true, ipv6);
1436
1437         return NB_OK;
1438 }
1439
1440 static int lib_interface_isis_ipv4_routing_delete(enum nb_event event,
1441                                                   const struct lyd_node *dnode)
1442 {
1443         bool ipv6;
1444         struct isis_circuit *circuit;
1445
1446         if (event != NB_EV_APPLY)
1447                 return NB_OK;
1448
1449         circuit = yang_dnode_get_entry(dnode, true);
1450         if (circuit && circuit->area) {
1451                 ipv6 = yang_dnode_exists(dnode, "../ipv6-routing");
1452                 isis_circuit_af_set(circuit, false, ipv6);
1453         }
1454
1455         return NB_OK;
1456 }
1457
1458 /*
1459  * XPath: /frr-interface:lib/interface/frr-isisd:isis/ipv6-routing
1460  */
1461 static int lib_interface_isis_ipv6_routing_create(enum nb_event event,
1462                                                   const struct lyd_node *dnode,
1463                                                   union nb_resource *resource)
1464 {
1465         bool ipv4;
1466         struct isis_circuit *circuit;
1467
1468         if (event != NB_EV_APPLY)
1469                 return NB_OK;
1470
1471         circuit = yang_dnode_get_entry(dnode, true);
1472         ipv4 = yang_dnode_exists(dnode, "../ipv6-routing");
1473         isis_circuit_af_set(circuit, ipv4, true);
1474
1475         return NB_OK;
1476 }
1477
1478 static int lib_interface_isis_ipv6_routing_delete(enum nb_event event,
1479                                                   const struct lyd_node *dnode)
1480 {
1481         bool ipv4;
1482         struct isis_circuit *circuit;
1483
1484         if (event != NB_EV_APPLY)
1485                 return NB_OK;
1486
1487         circuit = yang_dnode_get_entry(dnode, true);
1488         if (circuit->area) {
1489                 ipv4 = yang_dnode_exists(dnode, "../ipv4-routing");
1490                 isis_circuit_af_set(circuit, ipv4, false);
1491         }
1492
1493         return NB_OK;
1494 }
1495
1496 /*
1497  * XPath: /frr-interface:lib/interface/frr-isisd:isis/csnp-interval/level-1
1498  */
1499 static int
1500 lib_interface_isis_csnp_interval_level_1_modify(enum nb_event event,
1501                                                 const struct lyd_node *dnode,
1502                                                 union nb_resource *resource)
1503 {
1504         /* TODO: implement me. */
1505         return NB_OK;
1506 }
1507
1508 /*
1509  * XPath: /frr-interface:lib/interface/frr-isisd:isis/csnp-interval/level-2
1510  */
1511 static int
1512 lib_interface_isis_csnp_interval_level_2_modify(enum nb_event event,
1513                                                 const struct lyd_node *dnode,
1514                                                 union nb_resource *resource)
1515 {
1516         /* TODO: implement me. */
1517         return NB_OK;
1518 }
1519
1520 /*
1521  * XPath: /frr-interface:lib/interface/frr-isisd:isis/psnp-interval/level-1
1522  */
1523 static int
1524 lib_interface_isis_psnp_interval_level_1_modify(enum nb_event event,
1525                                                 const struct lyd_node *dnode,
1526                                                 union nb_resource *resource)
1527 {
1528         /* TODO: implement me. */
1529         return NB_OK;
1530 }
1531
1532 /*
1533  * XPath: /frr-interface:lib/interface/frr-isisd:isis/psnp-interval/level-2
1534  */
1535 static int
1536 lib_interface_isis_psnp_interval_level_2_modify(enum nb_event event,
1537                                                 const struct lyd_node *dnode,
1538                                                 union nb_resource *resource)
1539 {
1540         /* TODO: implement me. */
1541         return NB_OK;
1542 }
1543
1544 /*
1545  * XPath: /frr-interface:lib/interface/frr-isisd:isis/hello/padding
1546  */
1547 static int lib_interface_isis_hello_padding_modify(enum nb_event event,
1548                                                    const struct lyd_node *dnode,
1549                                                    union nb_resource *resource)
1550 {
1551         /* TODO: implement me. */
1552         return NB_OK;
1553 }
1554
1555 /*
1556  * XPath: /frr-interface:lib/interface/frr-isisd:isis/hello/interval/level-1
1557  */
1558 static int
1559 lib_interface_isis_hello_interval_level_1_modify(enum nb_event event,
1560                                                  const struct lyd_node *dnode,
1561                                                  union nb_resource *resource)
1562 {
1563         /* TODO: implement me. */
1564         return NB_OK;
1565 }
1566
1567 /*
1568  * XPath: /frr-interface:lib/interface/frr-isisd:isis/hello/interval/level-2
1569  */
1570 static int
1571 lib_interface_isis_hello_interval_level_2_modify(enum nb_event event,
1572                                                  const struct lyd_node *dnode,
1573                                                  union nb_resource *resource)
1574 {
1575         /* TODO: implement me. */
1576         return NB_OK;
1577 }
1578
1579 /*
1580  * XPath: /frr-interface:lib/interface/frr-isisd:isis/hello/multiplier/level-1
1581  */
1582 static int
1583 lib_interface_isis_hello_multiplier_level_1_modify(enum nb_event event,
1584                                                    const struct lyd_node *dnode,
1585                                                    union nb_resource *resource)
1586 {
1587         /* TODO: implement me. */
1588         return NB_OK;
1589 }
1590
1591 /*
1592  * XPath: /frr-interface:lib/interface/frr-isisd:isis/hello/multiplier/level-2
1593  */
1594 static int
1595 lib_interface_isis_hello_multiplier_level_2_modify(enum nb_event event,
1596                                                    const struct lyd_node *dnode,
1597                                                    union nb_resource *resource)
1598 {
1599         /* TODO: implement me. */
1600         return NB_OK;
1601 }
1602
1603 /*
1604  * XPath: /frr-interface:lib/interface/frr-isisd:isis/metric/level-1
1605  */
1606 static int
1607 lib_interface_isis_metric_level_1_modify(enum nb_event event,
1608                                          const struct lyd_node *dnode,
1609                                          union nb_resource *resource)
1610 {
1611         /* TODO: implement me. */
1612         return NB_OK;
1613 }
1614
1615 /*
1616  * XPath: /frr-interface:lib/interface/frr-isisd:isis/metric/level-2
1617  */
1618 static int
1619 lib_interface_isis_metric_level_2_modify(enum nb_event event,
1620                                          const struct lyd_node *dnode,
1621                                          union nb_resource *resource)
1622 {
1623         /* TODO: implement me. */
1624         return NB_OK;
1625 }
1626
1627 /*
1628  * XPath: /frr-interface:lib/interface/frr-isisd:isis/priority/level-1
1629  */
1630 static int
1631 lib_interface_isis_priority_level_1_modify(enum nb_event event,
1632                                            const struct lyd_node *dnode,
1633                                            union nb_resource *resource)
1634 {
1635         /* TODO: implement me. */
1636         return NB_OK;
1637 }
1638
1639 /*
1640  * XPath: /frr-interface:lib/interface/frr-isisd:isis/priority/level-2
1641  */
1642 static int
1643 lib_interface_isis_priority_level_2_modify(enum nb_event event,
1644                                            const struct lyd_node *dnode,
1645                                            union nb_resource *resource)
1646 {
1647         /* TODO: implement me. */
1648         return NB_OK;
1649 }
1650
1651 /*
1652  * XPath: /frr-interface:lib/interface/frr-isisd:isis/network-type
1653  */
1654 static int lib_interface_isis_network_type_modify(enum nb_event event,
1655                                                   const struct lyd_node *dnode,
1656                                                   union nb_resource *resource)
1657 {
1658         /* TODO: implement me. */
1659         return NB_OK;
1660 }
1661
1662 static int lib_interface_isis_network_type_delete(enum nb_event event,
1663                                                   const struct lyd_node *dnode)
1664 {
1665         /* TODO: implement me. */
1666         return NB_OK;
1667 }
1668
1669 /*
1670  * XPath: /frr-interface:lib/interface/frr-isisd:isis/passive
1671  */
1672 static int lib_interface_isis_passive_create(enum nb_event event,
1673                                              const struct lyd_node *dnode,
1674                                              union nb_resource *resource)
1675 {
1676         /* TODO: implement me. */
1677         return NB_OK;
1678 }
1679
1680 static int lib_interface_isis_passive_delete(enum nb_event event,
1681                                              const struct lyd_node *dnode)
1682 {
1683         /* TODO: implement me. */
1684         return NB_OK;
1685 }
1686
1687 /*
1688  * XPath: /frr-interface:lib/interface/frr-isisd:isis/password
1689  */
1690 static int lib_interface_isis_password_create(enum nb_event event,
1691                                               const struct lyd_node *dnode,
1692                                               union nb_resource *resource)
1693 {
1694         /* TODO: implement me. */
1695         return NB_OK;
1696 }
1697
1698 static int lib_interface_isis_password_delete(enum nb_event event,
1699                                               const struct lyd_node *dnode)
1700 {
1701         /* TODO: implement me. */
1702         return NB_OK;
1703 }
1704
1705 /*
1706  * XPath: /frr-interface:lib/interface/frr-isisd:isis/password/password
1707  */
1708 static int
1709 lib_interface_isis_password_password_modify(enum nb_event event,
1710                                             const struct lyd_node *dnode,
1711                                             union nb_resource *resource)
1712 {
1713         /* TODO: implement me. */
1714         return NB_OK;
1715 }
1716
1717 /*
1718  * XPath: /frr-interface:lib/interface/frr-isisd:isis/password/password-type
1719  */
1720 static int
1721 lib_interface_isis_password_password_type_modify(enum nb_event event,
1722                                                  const struct lyd_node *dnode,
1723                                                  union nb_resource *resource)
1724 {
1725         /* TODO: implement me. */
1726         return NB_OK;
1727 }
1728
1729 /*
1730  * XPath:
1731  * /frr-interface:lib/interface/frr-isisd:isis/disable-three-way-handshake
1732  */
1733 static int lib_interface_isis_disable_three_way_handshake_create(
1734         enum nb_event event, const struct lyd_node *dnode,
1735         union nb_resource *resource)
1736 {
1737         /* TODO: implement me. */
1738         return NB_OK;
1739 }
1740
1741 static int lib_interface_isis_disable_three_way_handshake_delete(
1742         enum nb_event event, const struct lyd_node *dnode)
1743 {
1744         /* TODO: implement me. */
1745         return NB_OK;
1746 }
1747
1748 /*
1749  * XPath:
1750  * /frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv4-unicast
1751  */
1752 static int lib_interface_isis_multi_topology_ipv4_unicast_modify(
1753         enum nb_event event, const struct lyd_node *dnode,
1754         union nb_resource *resource)
1755 {
1756         /* TODO: implement me. */
1757         return NB_OK;
1758 }
1759
1760 /*
1761  * XPath:
1762  * /frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv4-multicast
1763  */
1764 static int lib_interface_isis_multi_topology_ipv4_multicast_modify(
1765         enum nb_event event, const struct lyd_node *dnode,
1766         union nb_resource *resource)
1767 {
1768         /* TODO: implement me. */
1769         return NB_OK;
1770 }
1771
1772 /*
1773  * XPath:
1774  * /frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv4-management
1775  */
1776 static int lib_interface_isis_multi_topology_ipv4_management_modify(
1777         enum nb_event event, const struct lyd_node *dnode,
1778         union nb_resource *resource)
1779 {
1780         /* TODO: implement me. */
1781         return NB_OK;
1782 }
1783
1784 /*
1785  * XPath:
1786  * /frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv6-unicast
1787  */
1788 static int lib_interface_isis_multi_topology_ipv6_unicast_modify(
1789         enum nb_event event, const struct lyd_node *dnode,
1790         union nb_resource *resource)
1791 {
1792         /* TODO: implement me. */
1793         return NB_OK;
1794 }
1795
1796 /*
1797  * XPath:
1798  * /frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv6-multicast
1799  */
1800 static int lib_interface_isis_multi_topology_ipv6_multicast_modify(
1801         enum nb_event event, const struct lyd_node *dnode,
1802         union nb_resource *resource)
1803 {
1804         /* TODO: implement me. */
1805         return NB_OK;
1806 }
1807
1808 /*
1809  * XPath:
1810  * /frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv6-management
1811  */
1812 static int lib_interface_isis_multi_topology_ipv6_management_modify(
1813         enum nb_event event, const struct lyd_node *dnode,
1814         union nb_resource *resource)
1815 {
1816         /* TODO: implement me. */
1817         return NB_OK;
1818 }
1819
1820 /*
1821  * XPath: /frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv6-dstsrc
1822  */
1823 static int lib_interface_isis_multi_topology_ipv6_dstsrc_modify(
1824         enum nb_event event, const struct lyd_node *dnode,
1825         union nb_resource *resource)
1826 {
1827         /* TODO: implement me. */
1828         return NB_OK;
1829 }
1830
1831 /* clang-format off */
1832 const struct frr_yang_module_info frr_isisd_info = {
1833         .name = "frr-isisd",
1834         .nodes = {
1835                 {
1836                         .xpath = "/frr-isisd:isis/instance",
1837                         .cbs.create = isis_instance_create,
1838                         .cbs.delete = isis_instance_delete,
1839                         .cbs.cli_show = cli_show_router_isis,
1840                         .priority = NB_DFLT_PRIORITY - 1,
1841                 },
1842                 {
1843                         .xpath = "/frr-isisd:isis/instance/is-type",
1844                         .cbs.modify = isis_instance_is_type_modify,
1845                         .cbs.cli_show = cli_show_isis_is_type,
1846                 },
1847                 {
1848                         .xpath = "/frr-isisd:isis/instance/area-address",
1849                         .cbs.create = isis_instance_area_address_create,
1850                         .cbs.delete = isis_instance_area_address_delete,
1851                         .cbs.cli_show = cli_show_isis_area_address,
1852                 },
1853                 {
1854                         .xpath = "/frr-isisd:isis/instance/dynamic-hostname",
1855                         .cbs.modify = isis_instance_dynamic_hostname_modify,
1856                         .cbs.cli_show = cli_show_isis_dynamic_hostname,
1857                 },
1858                 {
1859                         .xpath = "/frr-isisd:isis/instance/attached",
1860                         .cbs.create = isis_instance_attached_create,
1861                         .cbs.delete = isis_instance_attached_delete,
1862                         .cbs.cli_show = cli_show_isis_attached,
1863                 },
1864                 {
1865                         .xpath = "/frr-isisd:isis/instance/overload",
1866                         .cbs.create = isis_instance_overload_create,
1867                         .cbs.delete = isis_instance_overload_delete,
1868                         .cbs.cli_show = cli_show_isis_overload,
1869                 },
1870                 {
1871                         .xpath = "/frr-isisd:isis/instance/metric-style",
1872                         .cbs.modify = isis_instance_metric_style_modify,
1873                         .cbs.cli_show = cli_show_isis_metric_style,
1874                 },
1875                 {
1876                         .xpath = "/frr-isisd:isis/instance/purge-originator",
1877                         .cbs.create = isis_instance_purge_originator_create,
1878                         .cbs.delete = isis_instance_purge_originator_delete,
1879                 },
1880                 {
1881                         .xpath = "/frr-isisd:isis/instance/lsp/mtu",
1882                         .cbs.modify = isis_instance_lsp_mtu_modify,
1883                 },
1884                 {
1885                         .xpath = "/frr-isisd:isis/instance/lsp/refresh-interval",
1886                         .cbs.cli_show = cli_show_isis_lsp_ref_interval,
1887                 },
1888                 {
1889                         .xpath = "/frr-isisd:isis/instance/lsp/refresh-interval/level-1",
1890                         .cbs.modify = isis_instance_lsp_refresh_interval_level_1_modify,
1891                 },
1892                 {
1893                         .xpath = "/frr-isisd:isis/instance/lsp/refresh-interval/level-2",
1894                         .cbs.modify = isis_instance_lsp_refresh_interval_level_2_modify,
1895                 },
1896                 {
1897                         .xpath = "/frr-isisd:isis/instance/lsp/maximum-lifetime/level-1",
1898                         .cbs.modify = isis_instance_lsp_maximum_lifetime_level_1_modify,
1899                 },
1900                 {
1901                         .xpath = "/frr-isisd:isis/instance/lsp/maximum-lifetime/level-2",
1902                         .cbs.modify = isis_instance_lsp_maximum_lifetime_level_2_modify,
1903                 },
1904                 {
1905                         .xpath = "/frr-isisd:isis/instance/lsp/generation-interval",
1906                         .cbs.cli_show = cli_show_isis_lsp_gen_interval,
1907                 },
1908                 {
1909                         .xpath = "/frr-isisd:isis/instance/lsp/generation-interval/level-1",
1910                         .cbs.modify = isis_instance_lsp_generation_interval_level_1_modify,
1911                 },
1912                 {
1913                         .xpath = "/frr-isisd:isis/instance/lsp/generation-interval/level-2",
1914                         .cbs.modify = isis_instance_lsp_generation_interval_level_2_modify,
1915                 },
1916                 {
1917                         .xpath = "/frr-isisd:isis/instance/spf/ietf-backoff-delay",
1918                         .cbs.create = isis_instance_spf_ietf_backoff_delay_create,
1919                         .cbs.delete = isis_instance_spf_ietf_backoff_delay_delete,
1920                 },
1921                 {
1922                         .xpath = "/frr-isisd:isis/instance/spf/ietf-backoff-delay/init-delay",
1923                         .cbs.modify = isis_instance_spf_ietf_backoff_delay_init_delay_modify,
1924                 },
1925                 {
1926                         .xpath = "/frr-isisd:isis/instance/spf/ietf-backoff-delay/short-delay",
1927                         .cbs.modify = isis_instance_spf_ietf_backoff_delay_short_delay_modify,
1928                 },
1929                 {
1930                         .xpath = "/frr-isisd:isis/instance/spf/ietf-backoff-delay/long-delay",
1931                         .cbs.modify = isis_instance_spf_ietf_backoff_delay_long_delay_modify,
1932                 },
1933                 {
1934                         .xpath = "/frr-isisd:isis/instance/spf/ietf-backoff-delay/hold-down",
1935                         .cbs.modify = isis_instance_spf_ietf_backoff_delay_hold_down_modify,
1936                 },
1937                 {
1938                         .xpath = "/frr-isisd:isis/instance/spf/ietf-backoff-delay/time-to-learn",
1939                         .cbs.modify = isis_instance_spf_ietf_backoff_delay_time_to_learn_modify,
1940                 },
1941                 {
1942                         .xpath = "/frr-isisd:isis/instance/spf/minimum-interval/level-1",
1943                         .cbs.modify = isis_instance_spf_minimum_interval_level_1_modify,
1944                 },
1945                 {
1946                         .xpath = "/frr-isisd:isis/instance/spf/minimum-interval/level-2",
1947                         .cbs.modify = isis_instance_spf_minimum_interval_level_2_modify,
1948                 },
1949                 {
1950                         .xpath = "/frr-isisd:isis/instance/area-password",
1951                         .cbs.create = isis_instance_area_password_create,
1952                         .cbs.delete = isis_instance_area_password_delete,
1953                         .cbs.apply_finish = area_password_apply_finish,
1954                         .cbs.cli_show = cli_show_isis_area_pwd,
1955                 },
1956                 {
1957                         .xpath = "/frr-isisd:isis/instance/area-password/password",
1958                         .cbs.modify = isis_instance_area_password_password_modify,
1959                 },
1960                 {
1961                         .xpath = "/frr-isisd:isis/instance/area-password/password-type",
1962                         .cbs.modify = isis_instance_area_password_password_type_modify,
1963                 },
1964                 {
1965                         .xpath = "/frr-isisd:isis/instance/area-password/authenticate-snp",
1966                         .cbs.modify = isis_instance_area_password_authenticate_snp_modify,
1967                 },
1968                 {
1969                         .xpath = "/frr-isisd:isis/instance/domain-password",
1970                         .cbs.create = isis_instance_domain_password_create,
1971                         .cbs.delete = isis_instance_domain_password_delete,
1972                         .cbs.apply_finish = domain_password_apply_finish,
1973                         .cbs.cli_show = cli_show_isis_domain_pwd,
1974                 },
1975                 {
1976                         .xpath = "/frr-isisd:isis/instance/domain-password/password",
1977                         .cbs.modify = isis_instance_domain_password_password_modify,
1978                 },
1979                 {
1980                         .xpath = "/frr-isisd:isis/instance/domain-password/password-type",
1981                         .cbs.modify = isis_instance_domain_password_password_type_modify,
1982                 },
1983                 {
1984                         .xpath = "/frr-isisd:isis/instance/domain-password/authenticate-snp",
1985                         .cbs.modify = isis_instance_domain_password_authenticate_snp_modify,
1986                 },
1987                 {
1988                         .xpath = "/frr-isisd:isis/instance/default-information-originate/ipv4",
1989                         .cbs.create = isis_instance_default_information_originate_ipv4_create,
1990                         .cbs.delete = isis_instance_default_information_originate_ipv4_delete,
1991                 },
1992                 {
1993                         .xpath = "/frr-isisd:isis/instance/default-information-originate/ipv4/always",
1994                         .cbs.create = isis_instance_default_information_originate_ipv4_always_create,
1995                         .cbs.delete = isis_instance_default_information_originate_ipv4_always_delete,
1996                 },
1997                 {
1998                         .xpath = "/frr-isisd:isis/instance/default-information-originate/ipv4/route-map",
1999                         .cbs.modify = isis_instance_default_information_originate_ipv4_route_map_modify,
2000                         .cbs.delete = isis_instance_default_information_originate_ipv4_route_map_delete,
2001                 },
2002                 {
2003                         .xpath = "/frr-isisd:isis/instance/default-information-originate/ipv4/metric",
2004                         .cbs.modify = isis_instance_default_information_originate_ipv4_metric_modify,
2005                         .cbs.delete = isis_instance_default_information_originate_ipv4_metric_delete,
2006                 },
2007                 {
2008                         .xpath = "/frr-isisd:isis/instance/default-information-originate/ipv6",
2009                         .cbs.create = isis_instance_default_information_originate_ipv6_create,
2010                         .cbs.delete = isis_instance_default_information_originate_ipv6_delete,
2011                 },
2012                 {
2013                         .xpath = "/frr-isisd:isis/instance/default-information-originate/ipv6/always",
2014                         .cbs.create = isis_instance_default_information_originate_ipv6_always_create,
2015                         .cbs.delete = isis_instance_default_information_originate_ipv6_always_delete,
2016                 },
2017                 {
2018                         .xpath = "/frr-isisd:isis/instance/default-information-originate/ipv6/route-map",
2019                         .cbs.modify = isis_instance_default_information_originate_ipv6_route_map_modify,
2020                         .cbs.delete = isis_instance_default_information_originate_ipv6_route_map_delete,
2021                 },
2022                 {
2023                         .xpath = "/frr-isisd:isis/instance/default-information-originate/ipv6/metric",
2024                         .cbs.modify = isis_instance_default_information_originate_ipv6_metric_modify,
2025                         .cbs.delete = isis_instance_default_information_originate_ipv6_metric_delete,
2026                 },
2027                 {
2028                         .xpath = "/frr-isisd:isis/instance/redistribute/ipv4",
2029                         .cbs.create = isis_instance_redistribute_ipv4_create,
2030                         .cbs.delete = isis_instance_redistribute_ipv4_delete,
2031                 },
2032                 {
2033                         .xpath = "/frr-isisd:isis/instance/redistribute/ipv4/route-map",
2034                         .cbs.modify = isis_instance_redistribute_ipv4_route_map_modify,
2035                         .cbs.delete = isis_instance_redistribute_ipv4_route_map_delete,
2036                 },
2037                 {
2038                         .xpath = "/frr-isisd:isis/instance/redistribute/ipv4/metric",
2039                         .cbs.modify = isis_instance_redistribute_ipv4_metric_modify,
2040                         .cbs.delete = isis_instance_redistribute_ipv4_metric_delete,
2041                 },
2042                 {
2043                         .xpath = "/frr-isisd:isis/instance/redistribute/ipv6",
2044                         .cbs.create = isis_instance_redistribute_ipv6_create,
2045                         .cbs.delete = isis_instance_redistribute_ipv6_delete,
2046                 },
2047                 {
2048                         .xpath = "/frr-isisd:isis/instance/redistribute/ipv6/route-map",
2049                         .cbs.modify = isis_instance_redistribute_ipv6_route_map_modify,
2050                         .cbs.delete = isis_instance_redistribute_ipv6_route_map_delete,
2051                 },
2052                 {
2053                         .xpath = "/frr-isisd:isis/instance/redistribute/ipv6/metric",
2054                         .cbs.modify = isis_instance_redistribute_ipv6_metric_modify,
2055                         .cbs.delete = isis_instance_redistribute_ipv6_metric_delete,
2056                 },
2057                 {
2058                         .xpath = "/frr-isisd:isis/instance/multi-topology/ipv4-multicast",
2059                         .cbs.create = isis_instance_multi_topology_ipv4_multicast_create,
2060                         .cbs.delete = isis_instance_multi_topology_ipv4_multicast_delete,
2061                 },
2062                 {
2063                         .xpath = "/frr-isisd:isis/instance/multi-topology/ipv4-multicast/overload",
2064                         .cbs.create = isis_instance_multi_topology_ipv4_multicast_overload_create,
2065                         .cbs.delete = isis_instance_multi_topology_ipv4_multicast_overload_delete,
2066                 },
2067                 {
2068                         .xpath = "/frr-isisd:isis/instance/multi-topology/ipv4-management",
2069                         .cbs.create = isis_instance_multi_topology_ipv4_management_create,
2070                         .cbs.delete = isis_instance_multi_topology_ipv4_management_delete,
2071                 },
2072                 {
2073                         .xpath = "/frr-isisd:isis/instance/multi-topology/ipv4-management/overload",
2074                         .cbs.create = isis_instance_multi_topology_ipv4_management_overload_create,
2075                         .cbs.delete = isis_instance_multi_topology_ipv4_management_overload_delete,
2076                 },
2077                 {
2078                         .xpath = "/frr-isisd:isis/instance/multi-topology/ipv6-unicast",
2079                         .cbs.create = isis_instance_multi_topology_ipv6_unicast_create,
2080                         .cbs.delete = isis_instance_multi_topology_ipv6_unicast_delete,
2081                 },
2082                 {
2083                         .xpath = "/frr-isisd:isis/instance/multi-topology/ipv6-unicast/overload",
2084                         .cbs.create = isis_instance_multi_topology_ipv6_unicast_overload_create,
2085                         .cbs.delete = isis_instance_multi_topology_ipv6_unicast_overload_delete,
2086                 },
2087                 {
2088                         .xpath = "/frr-isisd:isis/instance/multi-topology/ipv6-multicast",
2089                         .cbs.create = isis_instance_multi_topology_ipv6_multicast_create,
2090                         .cbs.delete = isis_instance_multi_topology_ipv6_multicast_delete,
2091                 },
2092                 {
2093                         .xpath = "/frr-isisd:isis/instance/multi-topology/ipv6-multicast/overload",
2094                         .cbs.create = isis_instance_multi_topology_ipv6_multicast_overload_create,
2095                         .cbs.delete = isis_instance_multi_topology_ipv6_multicast_overload_delete,
2096                 },
2097                 {
2098                         .xpath = "/frr-isisd:isis/instance/multi-topology/ipv6-management",
2099                         .cbs.create = isis_instance_multi_topology_ipv6_management_create,
2100                         .cbs.delete = isis_instance_multi_topology_ipv6_management_delete,
2101                 },
2102                 {
2103                         .xpath = "/frr-isisd:isis/instance/multi-topology/ipv6-management/overload",
2104                         .cbs.create = isis_instance_multi_topology_ipv6_management_overload_create,
2105                         .cbs.delete = isis_instance_multi_topology_ipv6_management_overload_delete,
2106                 },
2107                 {
2108                         .xpath = "/frr-isisd:isis/instance/multi-topology/ipv6-dstsrc",
2109                         .cbs.create = isis_instance_multi_topology_ipv6_dstsrc_create,
2110                         .cbs.delete = isis_instance_multi_topology_ipv6_dstsrc_delete,
2111                 },
2112                 {
2113                         .xpath = "/frr-isisd:isis/instance/multi-topology/ipv6-dstsrc/overload",
2114                         .cbs.create = isis_instance_multi_topology_ipv6_dstsrc_overload_create,
2115                         .cbs.delete = isis_instance_multi_topology_ipv6_dstsrc_overload_delete,
2116                 },
2117                 {
2118                         .xpath = "/frr-isisd:isis/instance/log-adjacency-changes",
2119                         .cbs.create = isis_instance_log_adjacency_changes_create,
2120                         .cbs.delete = isis_instance_log_adjacency_changes_delete,
2121                 },
2122                 {
2123                         .xpath = "/frr-isisd:isis/mpls-te",
2124                         .cbs.create = isis_mpls_te_create,
2125                         .cbs.delete = isis_mpls_te_delete,
2126                 },
2127                 {
2128                         .xpath = "/frr-isisd:isis/mpls-te/router-address",
2129                         .cbs.modify = isis_mpls_te_router_address_modify,
2130                         .cbs.delete = isis_mpls_te_router_address_delete,
2131                 },
2132                 {
2133                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis",
2134                         .cbs.create = lib_interface_isis_create,
2135                         .cbs.delete = lib_interface_isis_delete,
2136                 },
2137                 {
2138                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/area-tag",
2139                         .cbs.modify = lib_interface_isis_area_tag_modify,
2140                 },
2141                 {
2142                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/circuit-type",
2143                         .cbs.modify = lib_interface_isis_circuit_type_modify,
2144                 },
2145                 {
2146                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/ipv4-routing",
2147                         .cbs.create = lib_interface_isis_ipv4_routing_create,
2148                         .cbs.delete = lib_interface_isis_ipv4_routing_delete,
2149                         .cbs.cli_show = cli_show_ip_isis_ipv4,
2150                 },
2151                 {
2152                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/ipv6-routing",
2153                         .cbs.create = lib_interface_isis_ipv6_routing_create,
2154                         .cbs.delete = lib_interface_isis_ipv6_routing_delete,
2155                         .cbs.cli_show = cli_show_ip_isis_ipv6,
2156                 },
2157                 {
2158                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/csnp-interval/level-1",
2159                         .cbs.modify = lib_interface_isis_csnp_interval_level_1_modify,
2160                 },
2161                 {
2162                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/csnp-interval/level-2",
2163                         .cbs.modify = lib_interface_isis_csnp_interval_level_2_modify,
2164                 },
2165                 {
2166                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/psnp-interval/level-1",
2167                         .cbs.modify = lib_interface_isis_psnp_interval_level_1_modify,
2168                 },
2169                 {
2170                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/psnp-interval/level-2",
2171                         .cbs.modify = lib_interface_isis_psnp_interval_level_2_modify,
2172                 },
2173                 {
2174                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/hello/padding",
2175                         .cbs.modify = lib_interface_isis_hello_padding_modify,
2176                 },
2177                 {
2178                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/hello/interval/level-1",
2179                         .cbs.modify = lib_interface_isis_hello_interval_level_1_modify,
2180                 },
2181                 {
2182                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/hello/interval/level-2",
2183                         .cbs.modify = lib_interface_isis_hello_interval_level_2_modify,
2184                 },
2185                 {
2186                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/hello/multiplier/level-1",
2187                         .cbs.modify = lib_interface_isis_hello_multiplier_level_1_modify,
2188                 },
2189                 {
2190                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/hello/multiplier/level-2",
2191                         .cbs.modify = lib_interface_isis_hello_multiplier_level_2_modify,
2192                 },
2193                 {
2194                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/metric/level-1",
2195                         .cbs.modify = lib_interface_isis_metric_level_1_modify,
2196                 },
2197                 {
2198                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/metric/level-2",
2199                         .cbs.modify = lib_interface_isis_metric_level_2_modify,
2200                 },
2201                 {
2202                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/priority/level-1",
2203                         .cbs.modify = lib_interface_isis_priority_level_1_modify,
2204                 },
2205                 {
2206                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/priority/level-2",
2207                         .cbs.modify = lib_interface_isis_priority_level_2_modify,
2208                 },
2209                 {
2210                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/network-type",
2211                         .cbs.modify = lib_interface_isis_network_type_modify,
2212                         .cbs.delete = lib_interface_isis_network_type_delete,
2213                 },
2214                 {
2215                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/passive",
2216                         .cbs.create = lib_interface_isis_passive_create,
2217                         .cbs.delete = lib_interface_isis_passive_delete,
2218                 },
2219                 {
2220                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/password",
2221                         .cbs.create = lib_interface_isis_password_create,
2222                         .cbs.delete = lib_interface_isis_password_delete,
2223                 },
2224                 {
2225                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/password/password",
2226                         .cbs.modify = lib_interface_isis_password_password_modify,
2227                 },
2228                 {
2229                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/password/password-type",
2230                         .cbs.modify = lib_interface_isis_password_password_type_modify,
2231                 },
2232                 {
2233                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/disable-three-way-handshake",
2234                         .cbs.create = lib_interface_isis_disable_three_way_handshake_create,
2235                         .cbs.delete = lib_interface_isis_disable_three_way_handshake_delete,
2236                 },
2237                 {
2238                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv4-unicast",
2239                         .cbs.modify = lib_interface_isis_multi_topology_ipv4_unicast_modify,
2240                 },
2241                 {
2242                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv4-multicast",
2243                         .cbs.modify = lib_interface_isis_multi_topology_ipv4_multicast_modify,
2244                 },
2245                 {
2246                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv4-management",
2247                         .cbs.modify = lib_interface_isis_multi_topology_ipv4_management_modify,
2248                 },
2249                 {
2250                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv6-unicast",
2251                         .cbs.modify = lib_interface_isis_multi_topology_ipv6_unicast_modify,
2252                 },
2253                 {
2254                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv6-multicast",
2255                         .cbs.modify = lib_interface_isis_multi_topology_ipv6_multicast_modify,
2256                 },
2257                 {
2258                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv6-management",
2259                         .cbs.modify = lib_interface_isis_multi_topology_ipv6_management_modify,
2260                 },
2261                 {
2262                         .xpath = "/frr-interface:lib/interface/frr-isisd:isis/multi-topology/ipv6-dstsrc",
2263                         .cbs.modify = lib_interface_isis_multi_topology_ipv6_dstsrc_modify,
2264                 },
2265                 {
2266                         .xpath = NULL,
2267                 },
2268         }
2269 };