pceplib/pcep_msg_objects.c

   1 /*
   2  * This file is part of the PCEPlib, a PCEP protocol library.
   3  *
   4  * Copyright (C) 2020 Volta Networks https://voltanet.io/
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18  *
  19  * Author : Brady Johnson <brady@voltanet.io>
  20  *
  21  */
  22
  23
  24 /*
  25  * This is the implementation of a High Level PCEP message object API.
  26  */
  27
  28 #ifdef HAVE_CONFIG_H
  29 #include "config.h"
  30 #endif
  31
  32 #include <string.h>
  33 #include <arpa/inet.h>
  34 #include <stdarg.h>
  35 #include <unistd.h>
  36
  37 #include "pcep_msg_objects.h"
  38 #include "pcep_msg_tlvs.h"
  39 #include "pcep_utils_double_linked_list.h"
  40 #include "pcep_utils_logging.h"
  41 #include "pcep_utils_memory.h"
  42
  43 /* Internal common function used to create a pcep_object and populate the header
  44  */
  45 static struct pcep_object_header *pcep_obj_create_common_with_tlvs(
  46         uint8_t obj_length, enum pcep_object_classes object_class,
  47         enum pcep_object_types object_type, double_linked_list *tlv_list)
  48 {
  49         uint8_t *buffer = pceplib_malloc(PCEPLIB_MESSAGES, obj_length);
  50         memset(buffer, 0, obj_length);
  51
  52         /* The flag_p and flag_i flags will be set externally */
  53         struct pcep_object_header *hdr = (struct pcep_object_header *)buffer;
  54         hdr->object_class = object_class;
  55         hdr->object_type = object_type;
  56         hdr->tlv_list = tlv_list;
  57
  58         return hdr;
  59 }
  60
  61 static struct pcep_object_header *
  62 pcep_obj_create_common(uint8_t obj_length,
  63                        enum pcep_object_classes object_class,
  64                        enum pcep_object_types object_type)
  65 {
  66         return pcep_obj_create_common_with_tlvs(obj_length, object_class,
  67                                                 object_type, NULL);
  68 }
  69
  70 struct pcep_object_open *pcep_obj_create_open(uint8_t keepalive,
  71                                               uint8_t deadtimer, uint8_t sid,
  72                                               double_linked_list *tlv_list)
  73 {
  74         struct pcep_object_open *open =
  75                 (struct pcep_object_open *)pcep_obj_create_common_with_tlvs(
  76                         sizeof(struct pcep_object_open), PCEP_OBJ_CLASS_OPEN,
  77                         PCEP_OBJ_TYPE_OPEN, tlv_list);
  78
  79         open->open_version =
  80                 PCEP_OBJECT_OPEN_VERSION; /* PCEP version. Current version is 1
  81                                              /No flags are currently defined. */
  82         open->open_keepalive =
  83                 keepalive; /* Maximum period of time between two consecutive
  84                               PCEP messages sent by the sender. */
  85         open->open_deadtimer = deadtimer; /* Specifies the amount of time before
  86                                              closing the session down. */
  87         open->open_sid = sid; /* PCEP session number that identifies the current
  88                                  session. */
  89
  90         return open;
  91 }
  92
  93 struct pcep_object_rp *pcep_obj_create_rp(uint8_t priority, bool flag_r,
  94                                           bool flag_b, bool flag_s,
  95                                           bool flag_of, uint32_t reqid,
  96                                           double_linked_list *tlv_list)
  97 {
  98         if (priority > OBJECT_RP_MAX_PRIORITY) {
  99                 pcep_log(
 100                         LOG_INFO,
 101                         "%s: Error creating RP object, invalid priority [%d], max priority [%d].",
 102                         __func__, priority, OBJECT_RP_MAX_PRIORITY);
 103                 return NULL;
 104         }
 105
 106         struct pcep_object_rp *obj =
 107                 (struct pcep_object_rp *)pcep_obj_create_common_with_tlvs(
 108                         sizeof(struct pcep_object_rp), PCEP_OBJ_CLASS_RP,
 109                         PCEP_OBJ_TYPE_RP, tlv_list);
 110
 111         obj->priority = priority;
 112         obj->flag_reoptimization = flag_r;
 113         obj->flag_bidirectional = flag_b;
 114         obj->flag_strict = flag_s;
 115         obj->flag_of = flag_of;
 116         obj->request_id = reqid;
 117
 118         return obj;
 119 }
 120
 121 struct pcep_object_notify *
 122 pcep_obj_create_notify(enum pcep_notification_types notification_type,
 123                        enum pcep_notification_values notification_value)
 124 {
 125         struct pcep_object_notify *obj =
 126                 (struct pcep_object_notify *)pcep_obj_create_common(
 127                         sizeof(struct pcep_object_notify), PCEP_OBJ_CLASS_NOTF,
 128                         PCEP_OBJ_TYPE_NOTF);
 129
 130         obj->notification_type = notification_type;
 131         obj->notification_value = notification_value;
 132
 133         return obj;
 134 }
 135
 136 struct pcep_object_nopath *
 137 pcep_obj_create_nopath(uint8_t ni, bool flag_c,
 138                        enum pcep_nopath_tlv_err_codes error_code)
 139 {
 140         struct pcep_object_tlv_nopath_vector *tlv =
 141                 pcep_tlv_create_nopath_vector(error_code);
 142         double_linked_list *tlv_list = dll_initialize();
 143         dll_append(tlv_list, tlv);
 144
 145         struct pcep_object_nopath *obj =
 146                 (struct pcep_object_nopath *)pcep_obj_create_common_with_tlvs(
 147                         sizeof(struct pcep_object_nopath),
 148                         PCEP_OBJ_CLASS_NOPATH, PCEP_OBJ_TYPE_NOPATH, tlv_list);
 149
 150         obj->ni = ni;
 151         obj->flag_c = flag_c;
 152         obj->err_code = error_code;
 153
 154         return obj;
 155 }
 156
 157 struct pcep_object_association_ipv4 *
 158 pcep_obj_create_association_ipv4(bool r_flag, uint16_t association_type,
 159                                  uint16_t association_id, struct in_addr src)
 160 {
 161         struct pcep_object_association_ipv4 *obj =
 162                 (struct pcep_object_association_ipv4 *)pcep_obj_create_common(
 163                         sizeof(struct pcep_object_association_ipv4),
 164                         PCEP_OBJ_CLASS_ASSOCIATION,
 165                         PCEP_OBJ_TYPE_ASSOCIATION_IPV4);
 166
 167         obj->R_flag = r_flag;
 168         obj->association_type = association_type;
 169         obj->association_id = association_id;
 170         obj->src = src;
 171
 172         return obj;
 173 }
 174 struct pcep_object_association_ipv6 *
 175 pcep_obj_create_association_ipv6(bool r_flag, uint16_t association_type,
 176                                  uint16_t association_id, struct in6_addr src)
 177 {
 178         struct pcep_object_association_ipv6 *obj =
 179                 (struct pcep_object_association_ipv6 *)pcep_obj_create_common(
 180                         sizeof(struct pcep_object_association_ipv6),
 181                         PCEP_OBJ_CLASS_ASSOCIATION,
 182                         PCEP_OBJ_TYPE_ASSOCIATION_IPV6);
 183
 184         obj->R_flag = r_flag;
 185         obj->association_type = association_type;
 186         obj->association_id = association_id;
 187         obj->src = src;
 188
 189         return obj;
 190 }
 191 struct pcep_object_endpoints_ipv4 *
 192 pcep_obj_create_endpoint_ipv4(const struct in_addr *src_ipv4,
 193                               const struct in_addr *dst_ipv4)
 194 {
 195         if (src_ipv4 == NULL || dst_ipv4 == NULL) {
 196                 return NULL;
 197         }
 198
 199         struct pcep_object_endpoints_ipv4 *obj =
 200                 (struct pcep_object_endpoints_ipv4 *)pcep_obj_create_common(
 201                         sizeof(struct pcep_object_endpoints_ipv4),
 202                         PCEP_OBJ_CLASS_ENDPOINTS, PCEP_OBJ_TYPE_ENDPOINT_IPV4);
 203
 204         obj->src_ipv4.s_addr = src_ipv4->s_addr;
 205         obj->dst_ipv4.s_addr = dst_ipv4->s_addr;
 206
 207         return obj;
 208 }
 209
 210 struct pcep_object_endpoints_ipv6 *
 211 pcep_obj_create_endpoint_ipv6(const struct in6_addr *src_ipv6,
 212                               const struct in6_addr *dst_ipv6)
 213 {
 214         if (src_ipv6 == NULL || dst_ipv6 == NULL) {
 215                 return NULL;
 216         }
 217
 218         struct pcep_object_endpoints_ipv6 *obj =
 219                 (struct pcep_object_endpoints_ipv6 *)pcep_obj_create_common(
 220                         sizeof(struct pcep_object_endpoints_ipv6),
 221                         PCEP_OBJ_CLASS_ENDPOINTS, PCEP_OBJ_TYPE_ENDPOINT_IPV6);
 222
 223         memcpy(&obj->src_ipv6, src_ipv6, sizeof(struct in6_addr));
 224         memcpy(&obj->dst_ipv6, dst_ipv6, sizeof(struct in6_addr));
 225
 226         return obj;
 227 }
 228
 229 struct pcep_object_bandwidth *pcep_obj_create_bandwidth(float bandwidth)
 230 {
 231         struct pcep_object_bandwidth *obj =
 232                 (struct pcep_object_bandwidth *)pcep_obj_create_common(
 233                         sizeof(struct pcep_object_bandwidth),
 234                         PCEP_OBJ_CLASS_BANDWIDTH, PCEP_OBJ_TYPE_BANDWIDTH_REQ);
 235
 236         obj->bandwidth = bandwidth;
 237
 238         return obj;
 239 }
 240
 241 struct pcep_object_metric *pcep_obj_create_metric(enum pcep_metric_types type,
 242                                                   bool flag_b, bool flag_c,
 243                                                   float value)
 244 {
 245         struct pcep_object_metric *obj =
 246                 (struct pcep_object_metric *)pcep_obj_create_common(
 247                         sizeof(struct pcep_object_metric),
 248                         PCEP_OBJ_CLASS_METRIC, PCEP_OBJ_TYPE_METRIC);
 249
 250         obj->flag_b = flag_b;
 251         obj->flag_c = flag_c;
 252         obj->type = type;
 253         obj->value = value;
 254
 255         return obj;
 256 }
 257
 258 struct pcep_object_lspa *
 259 pcep_obj_create_lspa(uint32_t exclude_any, uint32_t include_any,
 260                      uint32_t include_all, uint8_t setup_priority,
 261                      uint8_t holding_priority, bool flag_local_protection)
 262 {
 263         struct pcep_object_lspa *obj =
 264                 (struct pcep_object_lspa *)pcep_obj_create_common(
 265                         sizeof(struct pcep_object_lspa), PCEP_OBJ_CLASS_LSPA,
 266                         PCEP_OBJ_TYPE_LSPA);
 267
 268         obj->lspa_exclude_any = exclude_any;
 269         obj->lspa_include_any = include_any;
 270         obj->lspa_include_all = include_all;
 271         obj->setup_priority = setup_priority;
 272         obj->holding_priority = holding_priority;
 273         obj->flag_local_protection = flag_local_protection;
 274
 275         return obj;
 276 }
 277
 278 struct pcep_object_svec *
 279 pcep_obj_create_svec(bool srlg, bool node, bool link,
 280                      double_linked_list *request_id_list)
 281 {
 282         if (request_id_list == NULL) {
 283                 return NULL;
 284         }
 285
 286         struct pcep_object_svec *obj =
 287                 (struct pcep_object_svec *)pcep_obj_create_common(
 288                         sizeof(struct pcep_object_svec), PCEP_OBJ_CLASS_SVEC,
 289                         PCEP_OBJ_TYPE_SVEC);
 290
 291         obj->flag_srlg_diverse = srlg;
 292         obj->flag_node_diverse = node;
 293         obj->flag_link_diverse = link;
 294         obj->request_id_list = request_id_list;
 295
 296         return obj;
 297 }
 298
 299 struct pcep_object_error *
 300 pcep_obj_create_error(enum pcep_error_type error_type,
 301                       enum pcep_error_value error_value)
 302 {
 303         struct pcep_object_error *obj =
 304                 (struct pcep_object_error *)pcep_obj_create_common(
 305                         sizeof(struct pcep_object_error), PCEP_OBJ_CLASS_ERROR,
 306                         PCEP_OBJ_TYPE_ERROR);
 307
 308         obj->error_type = error_type;
 309         obj->error_value = error_value;
 310
 311         return obj;
 312 }
 313
 314 struct pcep_object_close *pcep_obj_create_close(enum pcep_close_reason reason)
 315 {
 316         struct pcep_object_close *obj =
 317                 (struct pcep_object_close *)pcep_obj_create_common(
 318                         sizeof(struct pcep_object_close), PCEP_OBJ_CLASS_CLOSE,
 319                         PCEP_OBJ_TYPE_CLOSE);
 320
 321         obj->reason = reason;
 322
 323         return obj;
 324 }
 325
 326 struct pcep_object_srp *pcep_obj_create_srp(bool lsp_remove,
 327                                             uint32_t srp_id_number,
 328                                             double_linked_list *tlv_list)
 329 {
 330         struct pcep_object_srp *obj =
 331                 (struct pcep_object_srp *)pcep_obj_create_common_with_tlvs(
 332                         sizeof(struct pcep_object_srp), PCEP_OBJ_CLASS_SRP,
 333                         PCEP_OBJ_TYPE_SRP, tlv_list);
 334
 335         obj->flag_lsp_remove = lsp_remove;
 336         obj->srp_id_number = srp_id_number;
 337
 338         return obj;
 339 }
 340
 341 struct pcep_object_lsp *
 342 pcep_obj_create_lsp(uint32_t plsp_id, enum pcep_lsp_operational_status status,
 343                     bool c_flag, bool a_flag, bool r_flag, bool s_flag,
 344                     bool d_flag, double_linked_list *tlv_list)
 345 {
 346         /* The plsp_id is only 20 bits */
 347         if (plsp_id > MAX_PLSP_ID) {
 348                 pcep_log(
 349                         LOG_INFO,
 350                         "%s: pcep_obj_create_lsp invalid plsp_id [%d] max value [%d]",
 351                         __func__, plsp_id, MAX_PLSP_ID);
 352                 return NULL;
 353         }
 354
 355         /* The status is only 3 bits */
 356         if (status > MAX_LSP_STATUS) {
 357                 pcep_log(
 358                         LOG_INFO,
 359                         "%s: pcep_obj_create_lsp invalid status [%d] max value [%d]",
 360                         __func__, plsp_id, MAX_PLSP_ID);
 361                 return NULL;
 362         }
 363
 364         struct pcep_object_lsp *obj =
 365                 (struct pcep_object_lsp *)pcep_obj_create_common_with_tlvs(
 366                         sizeof(struct pcep_object_lsp), PCEP_OBJ_CLASS_LSP,
 367                         PCEP_OBJ_TYPE_LSP, tlv_list);
 368
 369         obj->plsp_id = plsp_id;
 370         obj->operational_status = status;
 371         obj->flag_c = c_flag;
 372         obj->flag_a = a_flag;
 373         obj->flag_r = r_flag;
 374         obj->flag_s = s_flag;
 375         obj->flag_d = d_flag;
 376
 377         return obj;
 378 }
 379
 380 struct pcep_object_vendor_info *
 381 pcep_obj_create_vendor_info(uint32_t enterprise_number,
 382                             uint32_t enterprise_spec_info)
 383 {
 384         struct pcep_object_vendor_info *obj =
 385                 (struct pcep_object_vendor_info *)pcep_obj_create_common(
 386                         sizeof(struct pcep_object_vendor_info),
 387                         PCEP_OBJ_CLASS_VENDOR_INFO, PCEP_OBJ_TYPE_VENDOR_INFO);
 388
 389         obj->enterprise_number = enterprise_number;
 390         obj->enterprise_specific_info = enterprise_spec_info;
 391
 392         return obj;
 393 }
 394
 395 struct pcep_object_inter_layer *
 396 pcep_obj_create_inter_layer(bool flag_i, bool flag_m, bool flag_t)
 397 {
 398         struct pcep_object_inter_layer *obj =
 399                 (struct pcep_object_inter_layer *)pcep_obj_create_common(
 400                         sizeof(struct pcep_object_inter_layer),
 401                         PCEP_OBJ_CLASS_INTER_LAYER, PCEP_OBJ_TYPE_INTER_LAYER);
 402
 403         obj->flag_i = flag_i;
 404         obj->flag_m = flag_m;
 405         obj->flag_t = flag_t;
 406
 407         return obj;
 408 }
 409
 410 struct pcep_object_switch_layer *
 411 pcep_obj_create_switch_layer(double_linked_list *switch_layer_rows)
 412 {
 413         struct pcep_object_switch_layer *obj =
 414                 (struct pcep_object_switch_layer *)pcep_obj_create_common(
 415                         sizeof(struct pcep_object_switch_layer),
 416                         PCEP_OBJ_CLASS_SWITCH_LAYER,
 417                         PCEP_OBJ_TYPE_SWITCH_LAYER);
 418
 419         obj->switch_layer_rows = switch_layer_rows;
 420
 421         return obj;
 422 }
 423
 424 struct pcep_object_req_adap_cap *
 425 pcep_obj_create_req_adap_cap(enum pcep_switching_capability sw_cap,
 426                              enum pcep_lsp_encoding_type encoding)
 427 {
 428         struct pcep_object_req_adap_cap *obj =
 429                 (struct pcep_object_req_adap_cap *)pcep_obj_create_common(
 430                         sizeof(struct pcep_object_req_adap_cap),
 431                         PCEP_OBJ_CLASS_REQ_ADAP_CAP,
 432                         PCEP_OBJ_TYPE_REQ_ADAP_CAP);
 433
 434         obj->switching_capability = sw_cap;
 435         obj->encoding = encoding;
 436
 437         return obj;
 438 }
 439
 440 struct pcep_object_server_indication *
 441 pcep_obj_create_server_indication(enum pcep_switching_capability sw_cap,
 442                                   enum pcep_lsp_encoding_type encoding,
 443                                   double_linked_list *tlv_list)
 444 {
 445         struct pcep_object_server_indication *obj =
 446                 (struct pcep_object_server_indication *)
 447                         pcep_obj_create_common_with_tlvs(
 448                                 sizeof(struct pcep_object_server_indication),
 449                                 PCEP_OBJ_CLASS_SERVER_IND,
 450                                 PCEP_OBJ_TYPE_SERVER_IND, tlv_list);
 451
 452         obj->switching_capability = sw_cap;
 453         obj->encoding = encoding;
 454
 455         return obj;
 456 }
 457
 458 struct pcep_object_objective_function *
 459 pcep_obj_create_objective_function(uint16_t of_code,
 460                                    double_linked_list *tlv_list)
 461 {
 462         struct pcep_object_objective_function *obj =
 463                 (struct pcep_object_objective_function *)
 464                         pcep_obj_create_common_with_tlvs(
 465                                 sizeof(struct pcep_object_objective_function),
 466                                 PCEP_OBJ_CLASS_OF, PCEP_OBJ_TYPE_OF, tlv_list);
 467
 468         obj->of_code = of_code;
 469
 470         return obj;
 471 }
 472
 473 /* Wrap a list of ro subobjects in a structure with an object header */
 474 struct pcep_object_ro *pcep_obj_create_ero(double_linked_list *ero_list)
 475 {
 476         struct pcep_object_ro *ero =
 477                 (struct pcep_object_ro *)pcep_obj_create_common(
 478                         sizeof(struct pcep_object_ro), PCEP_OBJ_CLASS_ERO,
 479                         PCEP_OBJ_TYPE_ERO);
 480         ero->sub_objects = ero_list;
 481
 482         return ero;
 483 }
 484
 485 /* Wrap a list of ro subobjects in a structure with an object header */
 486 struct pcep_object_ro *pcep_obj_create_iro(double_linked_list *iro_list)
 487 {
 488         struct pcep_object_ro *iro =
 489                 (struct pcep_object_ro *)pcep_obj_create_common(
 490                         sizeof(struct pcep_object_ro), PCEP_OBJ_CLASS_IRO,
 491                         PCEP_OBJ_TYPE_IRO);
 492         iro->sub_objects = iro_list;
 493
 494         return iro;
 495 }
 496
 497 /* Wrap a list of ro subobjects in a structure with an object header */
 498 struct pcep_object_ro *pcep_obj_create_rro(double_linked_list *rro_list)
 499 {
 500         struct pcep_object_ro *rro =
 501                 (struct pcep_object_ro *)pcep_obj_create_common(
 502                         sizeof(struct pcep_object_ro), PCEP_OBJ_CLASS_RRO,
 503                         PCEP_OBJ_TYPE_RRO);
 504         rro->sub_objects = rro_list;
 505
 506         return rro;
 507 }
 508
 509 /*
 510  * Route Object Sub-object creation functions
 511  */
 512
 513 static struct pcep_object_ro_subobj *
 514 pcep_obj_create_ro_subobj_common(uint8_t subobj_size,
 515                                  enum pcep_ro_subobj_types ro_subobj_type,
 516                                  bool flag_subobj_loose_hop)
 517 {
 518         struct pcep_object_ro_subobj *ro_subobj =
 519                 pceplib_malloc(PCEPLIB_MESSAGES, subobj_size);
 520         memset(ro_subobj, 0, subobj_size);
 521         ro_subobj->flag_subobj_loose_hop = flag_subobj_loose_hop;
 522         ro_subobj->ro_subobj_type = ro_subobj_type;
 523
 524         return ro_subobj;
 525 }
 526
 527 struct pcep_ro_subobj_ipv4 *
 528 pcep_obj_create_ro_subobj_ipv4(bool loose_hop, const struct in_addr *rro_ipv4,
 529                                uint8_t prefix_length, bool flag_local_prot)
 530 {
 531         if (rro_ipv4 == NULL) {
 532                 return NULL;
 533         }
 534
 535         struct pcep_ro_subobj_ipv4 *obj =
 536                 (struct pcep_ro_subobj_ipv4 *)pcep_obj_create_ro_subobj_common(
 537                         sizeof(struct pcep_ro_subobj_ipv4), RO_SUBOBJ_TYPE_IPV4,
 538                         loose_hop);
 539         obj->ip_addr.s_addr = rro_ipv4->s_addr;
 540         obj->prefix_length = prefix_length;
 541         obj->flag_local_protection = flag_local_prot;
 542
 543         return obj;
 544 }
 545
 546 struct pcep_ro_subobj_ipv6 *
 547 pcep_obj_create_ro_subobj_ipv6(bool loose_hop, const struct in6_addr *rro_ipv6,
 548                                uint8_t prefix_length, bool flag_local_prot)
 549 {
 550         if (rro_ipv6 == NULL) {
 551                 return NULL;
 552         }
 553
 554         struct pcep_ro_subobj_ipv6 *obj =
 555                 (struct pcep_ro_subobj_ipv6 *)pcep_obj_create_ro_subobj_common(
 556                         sizeof(struct pcep_ro_subobj_ipv6), RO_SUBOBJ_TYPE_IPV6,
 557                         loose_hop);
 558         obj->prefix_length = prefix_length;
 559         obj->flag_local_protection = flag_local_prot;
 560         memcpy(&obj->ip_addr, rro_ipv6, sizeof(struct in6_addr));
 561
 562         return obj;
 563 }
 564
 565 struct pcep_ro_subobj_unnum *
 566 pcep_obj_create_ro_subobj_unnum(struct in_addr *router_id, uint32_t if_id)
 567 {
 568         if (router_id == NULL) {
 569                 return NULL;
 570         }
 571
 572         struct pcep_ro_subobj_unnum *obj =
 573                 (struct pcep_ro_subobj_unnum *)pcep_obj_create_ro_subobj_common(
 574                         sizeof(struct pcep_ro_subobj_unnum),
 575                         RO_SUBOBJ_TYPE_UNNUM, false);
 576         obj->interface_id = if_id;
 577         obj->router_id.s_addr = router_id->s_addr;
 578
 579         return obj;
 580 }
 581
 582 struct pcep_ro_subobj_32label *
 583 pcep_obj_create_ro_subobj_32label(bool flag_global_label, uint8_t class_type,
 584                                   uint32_t label)
 585 {
 586         struct pcep_ro_subobj_32label *obj = (struct pcep_ro_subobj_32label *)
 587                 pcep_obj_create_ro_subobj_common(
 588                         sizeof(struct pcep_ro_subobj_32label),
 589                         RO_SUBOBJ_TYPE_LABEL, false);
 590         obj->class_type = class_type;
 591         obj->flag_global_label = flag_global_label;
 592         obj->label = label;
 593
 594         return obj;
 595 }
 596
 597 struct pcep_ro_subobj_asn *pcep_obj_create_ro_subobj_asn(uint16_t asn)
 598 {
 599         struct pcep_ro_subobj_asn *obj =
 600                 (struct pcep_ro_subobj_asn *)pcep_obj_create_ro_subobj_common(
 601                         sizeof(struct pcep_ro_subobj_asn), RO_SUBOBJ_TYPE_ASN,
 602                         false);
 603         obj->asn = asn;
 604
 605         return obj;
 606 }
 607
 608 /* Internal util function to create pcep_ro_subobj_sr sub-objects */
 609 static struct pcep_ro_subobj_sr *
 610 pcep_obj_create_ro_subobj_sr_common(enum pcep_sr_subobj_nai nai_type,
 611                                     bool loose_hop, bool f_flag, bool s_flag,
 612                                     bool c_flag_in, bool m_flag_in)
 613 {
 614         struct pcep_ro_subobj_sr *obj =
 615                 (struct pcep_ro_subobj_sr *)pcep_obj_create_ro_subobj_common(
 616                         sizeof(struct pcep_ro_subobj_sr), RO_SUBOBJ_TYPE_SR,
 617                         loose_hop);
 618
 619         /* Flag logic according to draft-ietf-pce-segment-routing-16 */
 620         bool c_flag = c_flag_in;
 621         bool m_flag = m_flag_in;
 622         if (s_flag) {
 623                 c_flag = false;
 624                 m_flag = false;
 625         }
 626
 627         if (m_flag == false) {
 628                 c_flag = false;
 629         }
 630
 631         obj->nai_type = nai_type;
 632         obj->flag_f = f_flag;
 633         obj->flag_s = s_flag;
 634         obj->flag_c = c_flag;
 635         obj->flag_m = m_flag;
 636
 637         return obj;
 638 }
 639
 640 struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_nonai(bool loose_hop,
 641                                                              uint32_t sid,
 642                                                              bool c_flag,
 643                                                              bool m_flag)
 644 {
 645         /* According to draft-ietf-pce-segment-routing-16#section-5.2.1
 646          * If NT=0, the F bit MUST be 1, the S bit MUST be zero and the
 647          * Length MUST be 8. */
 648         struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common(
 649                 PCEP_SR_SUBOBJ_NAI_ABSENT, loose_hop, true, false, c_flag,
 650                 m_flag);
 651         obj->sid = sid;
 652
 653         return obj;
 654 }
 655
 656 struct pcep_ro_subobj_sr *
 657 pcep_obj_create_ro_subobj_sr_ipv4_node(bool loose_hop, bool sid_absent,
 658                                        bool c_flag, bool m_flag, uint32_t sid,
 659                                        struct in_addr *ipv4_node_id)
 660 {
 661         if (ipv4_node_id == NULL) {
 662                 return NULL;
 663         }
 664
 665         /* According to draft-ietf-pce-segment-routing-16#section-5.2.1
 666          * If NT=1, the F bit MUST be zero.  If the S bit is 1, the Length
 667          * MUST be 8, otherwise the Length MUST be 12 */
 668         struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common(
 669                 PCEP_SR_SUBOBJ_NAI_IPV4_NODE, loose_hop, false, sid_absent,
 670                 c_flag, m_flag);
 671
 672         if (!sid_absent) {
 673                 obj->sid = sid;
 674         }
 675         obj->nai_list = dll_initialize();
 676         /* Since the IP has to be stored in the list, copy it so the caller
 677          * doesn't have any restrictions about the type of memory used
 678          * externally for the IP. This memory will be freed with the object is
 679          * freed. */
 680         struct in_addr *ipv4_node_id_copy =
 681                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in_addr));
 682         ipv4_node_id_copy->s_addr = ipv4_node_id->s_addr;
 683         dll_append(obj->nai_list, ipv4_node_id_copy);
 684
 685         return obj;
 686 }
 687
 688 struct pcep_ro_subobj_sr *
 689 pcep_obj_create_ro_subobj_sr_ipv6_node(bool loose_hop, bool sid_absent,
 690                                        bool c_flag, bool m_flag, uint32_t sid,
 691                                        struct in6_addr *ipv6_node_id)
 692 {
 693         if (ipv6_node_id == NULL) {
 694                 return NULL;
 695         }
 696
 697         /* According to draft-ietf-pce-segment-routing-16#section-5.2.1
 698          * If NT=2, the F bit MUST be zero.  If the S bit is 1, the Length
 699          * MUST be 20, otherwise the Length MUST be 24. */
 700         struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common(
 701                 PCEP_SR_SUBOBJ_NAI_IPV6_NODE, loose_hop, false, sid_absent,
 702                 c_flag, m_flag);
 703
 704         if (!sid_absent) {
 705                 obj->sid = sid;
 706         }
 707         obj->nai_list = dll_initialize();
 708         struct in6_addr *ipv6_node_id_copy =
 709                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr));
 710         memcpy(ipv6_node_id_copy, ipv6_node_id, sizeof(struct in6_addr));
 711         dll_append(obj->nai_list, ipv6_node_id_copy);
 712
 713         return obj;
 714 }
 715
 716 struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_ipv4_adj(
 717         bool loose_hop, bool sid_absent, bool c_flag, bool m_flag, uint32_t sid,
 718         struct in_addr *local_ipv4, struct in_addr *remote_ipv4)
 719 {
 720         if (local_ipv4 == NULL || remote_ipv4 == NULL) {
 721                 return NULL;
 722         }
 723
 724         /* According to draft-ietf-pce-segment-routing-16#section-5.2.1
 725          * If NT=3, the F bit MUST be zero.  If the S bit is 1, the Length
 726          * MUST be 12, otherwise the Length MUST be 16 */
 727         struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common(
 728                 PCEP_SR_SUBOBJ_NAI_IPV4_ADJACENCY, loose_hop, false, sid_absent,
 729                 c_flag, m_flag);
 730
 731         if (!sid_absent) {
 732                 obj->sid = sid;
 733         }
 734         obj->nai_list = dll_initialize();
 735         struct in_addr *local_ipv4_copy =
 736                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in_addr));
 737         struct in_addr *remote_ipv4_copy =
 738                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in_addr));
 739         local_ipv4_copy->s_addr = local_ipv4->s_addr;
 740         remote_ipv4_copy->s_addr = remote_ipv4->s_addr;
 741         dll_append(obj->nai_list, local_ipv4_copy);
 742         dll_append(obj->nai_list, remote_ipv4_copy);
 743
 744         return obj;
 745 }
 746
 747 struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_ipv6_adj(
 748         bool loose_hop, bool sid_absent, bool c_flag, bool m_flag, uint32_t sid,
 749         struct in6_addr *local_ipv6, struct in6_addr *remote_ipv6)
 750 {
 751         if (local_ipv6 == NULL || remote_ipv6 == NULL) {
 752                 return NULL;
 753         }
 754
 755         /* According to draft-ietf-pce-segment-routing-16#section-5.2.1
 756          * If NT=4, the F bit MUST be zero.  If the S bit is 1, the Length
 757          * MUST be 36, otherwise the Length MUST be 40 */
 758         struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common(
 759                 PCEP_SR_SUBOBJ_NAI_IPV6_ADJACENCY, loose_hop, false, sid_absent,
 760                 c_flag, m_flag);
 761
 762         if (!sid_absent) {
 763                 obj->sid = sid;
 764         }
 765         obj->nai_list = dll_initialize();
 766         struct in6_addr *local_ipv6_copy =
 767                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr));
 768         struct in6_addr *remote_ipv6_copy =
 769                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr));
 770         memcpy(local_ipv6_copy, local_ipv6, sizeof(struct in6_addr));
 771         memcpy(remote_ipv6_copy, remote_ipv6, sizeof(struct in6_addr));
 772         dll_append(obj->nai_list, local_ipv6_copy);
 773         dll_append(obj->nai_list, remote_ipv6_copy);
 774
 775         return obj;
 776 }
 777
 778 struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_unnumbered_ipv4_adj(
 779         bool loose_hop, bool sid_absent, bool c_flag, bool m_flag, uint32_t sid,
 780         uint32_t local_node_id, uint32_t local_if_id, uint32_t remote_node_id,
 781         uint32_t remote_if_id)
 782 {
 783         /* According to draft-ietf-pce-segment-routing-16#section-5.2.1
 784          * If NT=5, the F bit MUST be zero.  If the S bit is 1, the Length
 785          * MUST be 20, otherwise the Length MUST be 24. */
 786         struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common(
 787                 PCEP_SR_SUBOBJ_NAI_UNNUMBERED_IPV4_ADJACENCY, loose_hop, false,
 788                 sid_absent, c_flag, m_flag);
 789
 790         if (!sid_absent) {
 791                 obj->sid = sid;
 792         }
 793
 794         obj->nai_list = dll_initialize();
 795         uint32_t *local_node_id_copy =
 796                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t));
 797         *local_node_id_copy = local_node_id;
 798         dll_append(obj->nai_list, local_node_id_copy);
 799
 800         uint32_t *local_if_id_copy =
 801                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t));
 802         *local_if_id_copy = local_if_id;
 803         dll_append(obj->nai_list, local_if_id_copy);
 804
 805         uint32_t *remote_node_id_copy =
 806                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t));
 807         *remote_node_id_copy = remote_node_id;
 808         dll_append(obj->nai_list, remote_node_id_copy);
 809
 810         uint32_t *remote_if_id_copy =
 811                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t));
 812         *remote_if_id_copy = remote_if_id;
 813         dll_append(obj->nai_list, remote_if_id_copy);
 814
 815         return obj;
 816 }
 817
 818 struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_linklocal_ipv6_adj(
 819         bool loose_hop, bool sid_absent, bool c_flag, bool m_flag, uint32_t sid,
 820         struct in6_addr *local_ipv6, uint32_t local_if_id,
 821         struct in6_addr *remote_ipv6, uint32_t remote_if_id)
 822 {
 823         if (local_ipv6 == NULL || remote_ipv6 == NULL) {
 824                 return NULL;
 825         }
 826
 827         /* According to draft-ietf-pce-segment-routing-16#section-5.2.1
 828          * If NT=6, the F bit MUST be zero.  If the S bit is 1, the Length
 829          * MUST be 44, otherwise the Length MUST be 48 */
 830         struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common(
 831                 PCEP_SR_SUBOBJ_NAI_LINK_LOCAL_IPV6_ADJACENCY, loose_hop, false,
 832                 sid_absent, c_flag, m_flag);
 833
 834         if (!sid_absent) {
 835                 obj->sid = sid;
 836         }
 837         obj->nai_list = dll_initialize();
 838         struct in6_addr *local_ipv6_copy =
 839                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr));
 840         memcpy(local_ipv6_copy, local_ipv6, sizeof(struct in6_addr));
 841         dll_append(obj->nai_list, local_ipv6_copy);
 842
 843         uint32_t *local_if_id_copy =
 844                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t));
 845         *local_if_id_copy = local_if_id;
 846         dll_append(obj->nai_list, local_if_id_copy);
 847
 848         struct in6_addr *remote_ipv6_copy =
 849                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr));
 850         memcpy(remote_ipv6_copy, remote_ipv6, sizeof(struct in6_addr));
 851         dll_append(obj->nai_list, remote_ipv6_copy);
 852
 853         uint32_t *remote_if_id_copy =
 854                 pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t));
 855         *remote_if_id_copy = remote_if_id;
 856         dll_append(obj->nai_list, remote_if_id_copy);
 857
 858         return obj;
 859 }