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1 | // SPDX-License-Identifier: LGPL-2.1-or-later | |
2 | /* | |
3 | * This file is part of the PCEPlib, a PCEP protocol library. | |
4 | * | |
5 | * Copyright (C) 2020 Volta Networks https://voltanet.io/ | |
6 | * | |
7 | * Author : Brady Johnson <brady@voltanet.io> | |
8 | * | |
9 | */ | |
10 | ||
11 | ||
12 | /* | |
13 | * This is the implementation of a High Level PCEP message object API. | |
14 | */ | |
15 | ||
16 | #ifdef HAVE_CONFIG_H | |
17 | #include "config.h" | |
18 | #endif | |
19 | ||
20 | #include <string.h> | |
21 | #include <arpa/inet.h> | |
22 | #include <stdarg.h> | |
23 | #include <unistd.h> | |
24 | ||
25 | #include "pcep_msg_objects.h" | |
26 | #include "pcep_msg_tlvs.h" | |
27 | #include "pcep_utils_double_linked_list.h" | |
28 | #include "pcep_utils_logging.h" | |
29 | #include "pcep_utils_memory.h" | |
30 | ||
31 | /* Internal common function used to create a pcep_object and populate the header | |
32 | */ | |
33 | static struct pcep_object_header *pcep_obj_create_common_with_tlvs( | |
34 | uint8_t obj_length, enum pcep_object_classes object_class, | |
35 | enum pcep_object_types object_type, double_linked_list *tlv_list) | |
36 | { | |
37 | uint8_t *buffer = pceplib_malloc(PCEPLIB_MESSAGES, obj_length); | |
38 | memset(buffer, 0, obj_length); | |
39 | ||
40 | /* The flag_p and flag_i flags will be set externally */ | |
41 | struct pcep_object_header *hdr = (struct pcep_object_header *)buffer; | |
42 | hdr->object_class = object_class; | |
43 | hdr->object_type = object_type; | |
44 | hdr->tlv_list = tlv_list; | |
45 | ||
46 | return hdr; | |
47 | } | |
48 | ||
49 | static struct pcep_object_header * | |
50 | pcep_obj_create_common(uint8_t obj_length, | |
51 | enum pcep_object_classes object_class, | |
52 | enum pcep_object_types object_type) | |
53 | { | |
54 | return pcep_obj_create_common_with_tlvs(obj_length, object_class, | |
55 | object_type, NULL); | |
56 | } | |
57 | ||
58 | struct pcep_object_open *pcep_obj_create_open(uint8_t keepalive, | |
59 | uint8_t deadtimer, uint8_t sid, | |
60 | double_linked_list *tlv_list) | |
61 | { | |
62 | struct pcep_object_open *open = | |
63 | (struct pcep_object_open *)pcep_obj_create_common_with_tlvs( | |
64 | sizeof(struct pcep_object_open), PCEP_OBJ_CLASS_OPEN, | |
65 | PCEP_OBJ_TYPE_OPEN, tlv_list); | |
66 | ||
67 | open->open_version = | |
68 | PCEP_OBJECT_OPEN_VERSION; /* PCEP version. Current version is 1 | |
69 | /No flags are currently defined. */ | |
70 | open->open_keepalive = | |
71 | keepalive; /* Maximum period of time between two consecutive | |
72 | PCEP messages sent by the sender. */ | |
73 | open->open_deadtimer = deadtimer; /* Specifies the amount of time before | |
74 | closing the session down. */ | |
75 | open->open_sid = sid; /* PCEP session number that identifies the current | |
76 | session. */ | |
77 | ||
78 | return open; | |
79 | } | |
80 | ||
81 | struct pcep_object_rp *pcep_obj_create_rp(uint8_t priority, bool flag_r, | |
82 | bool flag_b, bool flag_s, | |
83 | bool flag_of, uint32_t reqid, | |
84 | double_linked_list *tlv_list) | |
85 | { | |
86 | if (priority > OBJECT_RP_MAX_PRIORITY) { | |
87 | pcep_log( | |
88 | LOG_INFO, | |
89 | "%s: Error creating RP object, invalid priority [%d], max priority [%d].", | |
90 | __func__, priority, OBJECT_RP_MAX_PRIORITY); | |
91 | return NULL; | |
92 | } | |
93 | ||
94 | struct pcep_object_rp *obj = | |
95 | (struct pcep_object_rp *)pcep_obj_create_common_with_tlvs( | |
96 | sizeof(struct pcep_object_rp), PCEP_OBJ_CLASS_RP, | |
97 | PCEP_OBJ_TYPE_RP, tlv_list); | |
98 | ||
99 | obj->priority = priority; | |
100 | obj->flag_reoptimization = flag_r; | |
101 | obj->flag_bidirectional = flag_b; | |
102 | obj->flag_strict = flag_s; | |
103 | obj->flag_of = flag_of; | |
104 | obj->request_id = reqid; | |
105 | ||
106 | return obj; | |
107 | } | |
108 | ||
109 | struct pcep_object_notify * | |
110 | pcep_obj_create_notify(enum pcep_notification_types notification_type, | |
111 | enum pcep_notification_values notification_value) | |
112 | { | |
113 | struct pcep_object_notify *obj = | |
114 | (struct pcep_object_notify *)pcep_obj_create_common( | |
115 | sizeof(struct pcep_object_notify), PCEP_OBJ_CLASS_NOTF, | |
116 | PCEP_OBJ_TYPE_NOTF); | |
117 | ||
118 | obj->notification_type = notification_type; | |
119 | obj->notification_value = notification_value; | |
120 | ||
121 | return obj; | |
122 | } | |
123 | ||
124 | struct pcep_object_nopath * | |
125 | pcep_obj_create_nopath(uint8_t ni, bool flag_c, | |
126 | enum pcep_nopath_tlv_err_codes error_code) | |
127 | { | |
128 | struct pcep_object_tlv_nopath_vector *tlv = | |
129 | pcep_tlv_create_nopath_vector(error_code); | |
130 | double_linked_list *tlv_list = dll_initialize(); | |
131 | dll_append(tlv_list, tlv); | |
132 | ||
133 | struct pcep_object_nopath *obj = | |
134 | (struct pcep_object_nopath *)pcep_obj_create_common_with_tlvs( | |
135 | sizeof(struct pcep_object_nopath), | |
136 | PCEP_OBJ_CLASS_NOPATH, PCEP_OBJ_TYPE_NOPATH, tlv_list); | |
137 | ||
138 | obj->ni = ni; | |
139 | obj->flag_c = flag_c; | |
140 | obj->err_code = error_code; | |
141 | ||
142 | return obj; | |
143 | } | |
144 | ||
145 | struct pcep_object_association_ipv4 * | |
146 | pcep_obj_create_association_ipv4(bool r_flag, uint16_t association_type, | |
147 | uint16_t association_id, struct in_addr src) | |
148 | { | |
149 | struct pcep_object_association_ipv4 *obj = | |
150 | (struct pcep_object_association_ipv4 *)pcep_obj_create_common( | |
151 | sizeof(struct pcep_object_association_ipv4), | |
152 | PCEP_OBJ_CLASS_ASSOCIATION, | |
153 | PCEP_OBJ_TYPE_ASSOCIATION_IPV4); | |
154 | ||
155 | obj->R_flag = r_flag; | |
156 | obj->association_type = association_type; | |
157 | obj->association_id = association_id; | |
158 | obj->src = src; | |
159 | ||
160 | return obj; | |
161 | } | |
162 | struct pcep_object_association_ipv6 * | |
163 | pcep_obj_create_association_ipv6(bool r_flag, uint16_t association_type, | |
164 | uint16_t association_id, struct in6_addr src) | |
165 | { | |
166 | struct pcep_object_association_ipv6 *obj = | |
167 | (struct pcep_object_association_ipv6 *)pcep_obj_create_common( | |
168 | sizeof(struct pcep_object_association_ipv6), | |
169 | PCEP_OBJ_CLASS_ASSOCIATION, | |
170 | PCEP_OBJ_TYPE_ASSOCIATION_IPV6); | |
171 | ||
172 | obj->R_flag = r_flag; | |
173 | obj->association_type = association_type; | |
174 | obj->association_id = association_id; | |
175 | obj->src = src; | |
176 | ||
177 | return obj; | |
178 | } | |
179 | struct pcep_object_endpoints_ipv4 * | |
180 | pcep_obj_create_endpoint_ipv4(const struct in_addr *src_ipv4, | |
181 | const struct in_addr *dst_ipv4) | |
182 | { | |
183 | if (src_ipv4 == NULL || dst_ipv4 == NULL) { | |
184 | return NULL; | |
185 | } | |
186 | ||
187 | struct pcep_object_endpoints_ipv4 *obj = | |
188 | (struct pcep_object_endpoints_ipv4 *)pcep_obj_create_common( | |
189 | sizeof(struct pcep_object_endpoints_ipv4), | |
190 | PCEP_OBJ_CLASS_ENDPOINTS, PCEP_OBJ_TYPE_ENDPOINT_IPV4); | |
191 | ||
192 | obj->src_ipv4.s_addr = src_ipv4->s_addr; | |
193 | obj->dst_ipv4.s_addr = dst_ipv4->s_addr; | |
194 | ||
195 | return obj; | |
196 | } | |
197 | ||
198 | struct pcep_object_endpoints_ipv6 * | |
199 | pcep_obj_create_endpoint_ipv6(const struct in6_addr *src_ipv6, | |
200 | const struct in6_addr *dst_ipv6) | |
201 | { | |
202 | if (src_ipv6 == NULL || dst_ipv6 == NULL) { | |
203 | return NULL; | |
204 | } | |
205 | ||
206 | struct pcep_object_endpoints_ipv6 *obj = | |
207 | (struct pcep_object_endpoints_ipv6 *)pcep_obj_create_common( | |
208 | sizeof(struct pcep_object_endpoints_ipv6), | |
209 | PCEP_OBJ_CLASS_ENDPOINTS, PCEP_OBJ_TYPE_ENDPOINT_IPV6); | |
210 | ||
211 | memcpy(&obj->src_ipv6, src_ipv6, sizeof(struct in6_addr)); | |
212 | memcpy(&obj->dst_ipv6, dst_ipv6, sizeof(struct in6_addr)); | |
213 | ||
214 | return obj; | |
215 | } | |
216 | ||
217 | struct pcep_object_bandwidth *pcep_obj_create_bandwidth(float bandwidth) | |
218 | { | |
219 | struct pcep_object_bandwidth *obj = | |
220 | (struct pcep_object_bandwidth *)pcep_obj_create_common( | |
221 | sizeof(struct pcep_object_bandwidth), | |
222 | PCEP_OBJ_CLASS_BANDWIDTH, PCEP_OBJ_TYPE_BANDWIDTH_REQ); | |
223 | ||
224 | obj->bandwidth = bandwidth; | |
225 | ||
226 | return obj; | |
227 | } | |
228 | ||
229 | struct pcep_object_metric *pcep_obj_create_metric(enum pcep_metric_types type, | |
230 | bool flag_b, bool flag_c, | |
231 | float value) | |
232 | { | |
233 | struct pcep_object_metric *obj = | |
234 | (struct pcep_object_metric *)pcep_obj_create_common( | |
235 | sizeof(struct pcep_object_metric), | |
236 | PCEP_OBJ_CLASS_METRIC, PCEP_OBJ_TYPE_METRIC); | |
237 | ||
238 | obj->flag_b = flag_b; | |
239 | obj->flag_c = flag_c; | |
240 | obj->type = type; | |
241 | obj->value = value; | |
242 | ||
243 | return obj; | |
244 | } | |
245 | ||
246 | struct pcep_object_lspa * | |
247 | pcep_obj_create_lspa(uint32_t exclude_any, uint32_t include_any, | |
248 | uint32_t include_all, uint8_t setup_priority, | |
249 | uint8_t holding_priority, bool flag_local_protection) | |
250 | { | |
251 | struct pcep_object_lspa *obj = | |
252 | (struct pcep_object_lspa *)pcep_obj_create_common( | |
253 | sizeof(struct pcep_object_lspa), PCEP_OBJ_CLASS_LSPA, | |
254 | PCEP_OBJ_TYPE_LSPA); | |
255 | ||
256 | obj->lspa_exclude_any = exclude_any; | |
257 | obj->lspa_include_any = include_any; | |
258 | obj->lspa_include_all = include_all; | |
259 | obj->setup_priority = setup_priority; | |
260 | obj->holding_priority = holding_priority; | |
261 | obj->flag_local_protection = flag_local_protection; | |
262 | ||
263 | return obj; | |
264 | } | |
265 | ||
266 | struct pcep_object_svec * | |
267 | pcep_obj_create_svec(bool srlg, bool node, bool link, | |
268 | double_linked_list *request_id_list) | |
269 | { | |
270 | if (request_id_list == NULL) { | |
271 | return NULL; | |
272 | } | |
273 | ||
274 | struct pcep_object_svec *obj = | |
275 | (struct pcep_object_svec *)pcep_obj_create_common( | |
276 | sizeof(struct pcep_object_svec), PCEP_OBJ_CLASS_SVEC, | |
277 | PCEP_OBJ_TYPE_SVEC); | |
278 | ||
279 | obj->flag_srlg_diverse = srlg; | |
280 | obj->flag_node_diverse = node; | |
281 | obj->flag_link_diverse = link; | |
282 | obj->request_id_list = request_id_list; | |
283 | ||
284 | return obj; | |
285 | } | |
286 | ||
287 | struct pcep_object_error * | |
288 | pcep_obj_create_error(enum pcep_error_type error_type, | |
289 | enum pcep_error_value error_value) | |
290 | { | |
291 | struct pcep_object_error *obj = | |
292 | (struct pcep_object_error *)pcep_obj_create_common( | |
293 | sizeof(struct pcep_object_error), PCEP_OBJ_CLASS_ERROR, | |
294 | PCEP_OBJ_TYPE_ERROR); | |
295 | ||
296 | obj->error_type = error_type; | |
297 | obj->error_value = error_value; | |
298 | ||
299 | return obj; | |
300 | } | |
301 | ||
302 | struct pcep_object_close *pcep_obj_create_close(enum pcep_close_reason reason) | |
303 | { | |
304 | struct pcep_object_close *obj = | |
305 | (struct pcep_object_close *)pcep_obj_create_common( | |
306 | sizeof(struct pcep_object_close), PCEP_OBJ_CLASS_CLOSE, | |
307 | PCEP_OBJ_TYPE_CLOSE); | |
308 | ||
309 | obj->reason = reason; | |
310 | ||
311 | return obj; | |
312 | } | |
313 | ||
314 | struct pcep_object_srp *pcep_obj_create_srp(bool lsp_remove, | |
315 | uint32_t srp_id_number, | |
316 | double_linked_list *tlv_list) | |
317 | { | |
318 | struct pcep_object_srp *obj = | |
319 | (struct pcep_object_srp *)pcep_obj_create_common_with_tlvs( | |
320 | sizeof(struct pcep_object_srp), PCEP_OBJ_CLASS_SRP, | |
321 | PCEP_OBJ_TYPE_SRP, tlv_list); | |
322 | ||
323 | obj->flag_lsp_remove = lsp_remove; | |
324 | obj->srp_id_number = srp_id_number; | |
325 | ||
326 | return obj; | |
327 | } | |
328 | ||
329 | struct pcep_object_lsp * | |
330 | pcep_obj_create_lsp(uint32_t plsp_id, enum pcep_lsp_operational_status status, | |
331 | bool c_flag, bool a_flag, bool r_flag, bool s_flag, | |
332 | bool d_flag, double_linked_list *tlv_list) | |
333 | { | |
334 | /* The plsp_id is only 20 bits */ | |
335 | if (plsp_id > MAX_PLSP_ID) { | |
336 | pcep_log( | |
337 | LOG_INFO, | |
338 | "%s: pcep_obj_create_lsp invalid plsp_id [%d] max value [%d]", | |
339 | __func__, plsp_id, MAX_PLSP_ID); | |
340 | return NULL; | |
341 | } | |
342 | ||
343 | /* The status is only 3 bits */ | |
344 | if (status > MAX_LSP_STATUS) { | |
345 | pcep_log( | |
346 | LOG_INFO, | |
347 | "%s: pcep_obj_create_lsp invalid status [%d] max value [%d]", | |
348 | __func__, plsp_id, MAX_PLSP_ID); | |
349 | return NULL; | |
350 | } | |
351 | ||
352 | struct pcep_object_lsp *obj = | |
353 | (struct pcep_object_lsp *)pcep_obj_create_common_with_tlvs( | |
354 | sizeof(struct pcep_object_lsp), PCEP_OBJ_CLASS_LSP, | |
355 | PCEP_OBJ_TYPE_LSP, tlv_list); | |
356 | ||
357 | obj->plsp_id = plsp_id; | |
358 | obj->operational_status = status; | |
359 | obj->flag_c = c_flag; | |
360 | obj->flag_a = a_flag; | |
361 | obj->flag_r = r_flag; | |
362 | obj->flag_s = s_flag; | |
363 | obj->flag_d = d_flag; | |
364 | ||
365 | return obj; | |
366 | } | |
367 | ||
368 | struct pcep_object_vendor_info * | |
369 | pcep_obj_create_vendor_info(uint32_t enterprise_number, | |
370 | uint32_t enterprise_spec_info) | |
371 | { | |
372 | struct pcep_object_vendor_info *obj = | |
373 | (struct pcep_object_vendor_info *)pcep_obj_create_common( | |
374 | sizeof(struct pcep_object_vendor_info), | |
375 | PCEP_OBJ_CLASS_VENDOR_INFO, PCEP_OBJ_TYPE_VENDOR_INFO); | |
376 | ||
377 | obj->enterprise_number = enterprise_number; | |
378 | obj->enterprise_specific_info = enterprise_spec_info; | |
379 | ||
380 | return obj; | |
381 | } | |
382 | ||
383 | struct pcep_object_inter_layer * | |
384 | pcep_obj_create_inter_layer(bool flag_i, bool flag_m, bool flag_t) | |
385 | { | |
386 | struct pcep_object_inter_layer *obj = | |
387 | (struct pcep_object_inter_layer *)pcep_obj_create_common( | |
388 | sizeof(struct pcep_object_inter_layer), | |
389 | PCEP_OBJ_CLASS_INTER_LAYER, PCEP_OBJ_TYPE_INTER_LAYER); | |
390 | ||
391 | obj->flag_i = flag_i; | |
392 | obj->flag_m = flag_m; | |
393 | obj->flag_t = flag_t; | |
394 | ||
395 | return obj; | |
396 | } | |
397 | ||
398 | struct pcep_object_switch_layer * | |
399 | pcep_obj_create_switch_layer(double_linked_list *switch_layer_rows) | |
400 | { | |
401 | struct pcep_object_switch_layer *obj = | |
402 | (struct pcep_object_switch_layer *)pcep_obj_create_common( | |
403 | sizeof(struct pcep_object_switch_layer), | |
404 | PCEP_OBJ_CLASS_SWITCH_LAYER, | |
405 | PCEP_OBJ_TYPE_SWITCH_LAYER); | |
406 | ||
407 | obj->switch_layer_rows = switch_layer_rows; | |
408 | ||
409 | return obj; | |
410 | } | |
411 | ||
412 | struct pcep_object_req_adap_cap * | |
413 | pcep_obj_create_req_adap_cap(enum pcep_switching_capability sw_cap, | |
414 | enum pcep_lsp_encoding_type encoding) | |
415 | { | |
416 | struct pcep_object_req_adap_cap *obj = | |
417 | (struct pcep_object_req_adap_cap *)pcep_obj_create_common( | |
418 | sizeof(struct pcep_object_req_adap_cap), | |
419 | PCEP_OBJ_CLASS_REQ_ADAP_CAP, | |
420 | PCEP_OBJ_TYPE_REQ_ADAP_CAP); | |
421 | ||
422 | obj->switching_capability = sw_cap; | |
423 | obj->encoding = encoding; | |
424 | ||
425 | return obj; | |
426 | } | |
427 | ||
428 | struct pcep_object_server_indication * | |
429 | pcep_obj_create_server_indication(enum pcep_switching_capability sw_cap, | |
430 | enum pcep_lsp_encoding_type encoding, | |
431 | double_linked_list *tlv_list) | |
432 | { | |
433 | struct pcep_object_server_indication *obj = | |
434 | (struct pcep_object_server_indication *) | |
435 | pcep_obj_create_common_with_tlvs( | |
436 | sizeof(struct pcep_object_server_indication), | |
437 | PCEP_OBJ_CLASS_SERVER_IND, | |
438 | PCEP_OBJ_TYPE_SERVER_IND, tlv_list); | |
439 | ||
440 | obj->switching_capability = sw_cap; | |
441 | obj->encoding = encoding; | |
442 | ||
443 | return obj; | |
444 | } | |
445 | ||
446 | struct pcep_object_objective_function * | |
447 | pcep_obj_create_objective_function(uint16_t of_code, | |
448 | double_linked_list *tlv_list) | |
449 | { | |
450 | struct pcep_object_objective_function *obj = | |
451 | (struct pcep_object_objective_function *) | |
452 | pcep_obj_create_common_with_tlvs( | |
453 | sizeof(struct pcep_object_objective_function), | |
454 | PCEP_OBJ_CLASS_OF, PCEP_OBJ_TYPE_OF, tlv_list); | |
455 | ||
456 | obj->of_code = of_code; | |
457 | ||
458 | return obj; | |
459 | } | |
460 | ||
461 | /* Wrap a list of ro subobjects in a structure with an object header */ | |
462 | struct pcep_object_ro *pcep_obj_create_ero(double_linked_list *ero_list) | |
463 | { | |
464 | struct pcep_object_ro *ero = | |
465 | (struct pcep_object_ro *)pcep_obj_create_common( | |
466 | sizeof(struct pcep_object_ro), PCEP_OBJ_CLASS_ERO, | |
467 | PCEP_OBJ_TYPE_ERO); | |
468 | ero->sub_objects = ero_list; | |
469 | ||
470 | return ero; | |
471 | } | |
472 | ||
473 | /* Wrap a list of ro subobjects in a structure with an object header */ | |
474 | struct pcep_object_ro *pcep_obj_create_iro(double_linked_list *iro_list) | |
475 | { | |
476 | struct pcep_object_ro *iro = | |
477 | (struct pcep_object_ro *)pcep_obj_create_common( | |
478 | sizeof(struct pcep_object_ro), PCEP_OBJ_CLASS_IRO, | |
479 | PCEP_OBJ_TYPE_IRO); | |
480 | iro->sub_objects = iro_list; | |
481 | ||
482 | return iro; | |
483 | } | |
484 | ||
485 | /* Wrap a list of ro subobjects in a structure with an object header */ | |
486 | struct pcep_object_ro *pcep_obj_create_rro(double_linked_list *rro_list) | |
487 | { | |
488 | struct pcep_object_ro *rro = | |
489 | (struct pcep_object_ro *)pcep_obj_create_common( | |
490 | sizeof(struct pcep_object_ro), PCEP_OBJ_CLASS_RRO, | |
491 | PCEP_OBJ_TYPE_RRO); | |
492 | rro->sub_objects = rro_list; | |
493 | ||
494 | return rro; | |
495 | } | |
496 | ||
497 | /* | |
498 | * Route Object Sub-object creation functions | |
499 | */ | |
500 | ||
501 | static struct pcep_object_ro_subobj * | |
502 | pcep_obj_create_ro_subobj_common(uint8_t subobj_size, | |
503 | enum pcep_ro_subobj_types ro_subobj_type, | |
504 | bool flag_subobj_loose_hop) | |
505 | { | |
506 | struct pcep_object_ro_subobj *ro_subobj = | |
507 | pceplib_malloc(PCEPLIB_MESSAGES, subobj_size); | |
508 | memset(ro_subobj, 0, subobj_size); | |
509 | ro_subobj->flag_subobj_loose_hop = flag_subobj_loose_hop; | |
510 | ro_subobj->ro_subobj_type = ro_subobj_type; | |
511 | ||
512 | return ro_subobj; | |
513 | } | |
514 | ||
515 | struct pcep_ro_subobj_ipv4 * | |
516 | pcep_obj_create_ro_subobj_ipv4(bool loose_hop, const struct in_addr *rro_ipv4, | |
517 | uint8_t prefix_length, bool flag_local_prot) | |
518 | { | |
519 | if (rro_ipv4 == NULL) { | |
520 | return NULL; | |
521 | } | |
522 | ||
523 | struct pcep_ro_subobj_ipv4 *obj = | |
524 | (struct pcep_ro_subobj_ipv4 *)pcep_obj_create_ro_subobj_common( | |
525 | sizeof(struct pcep_ro_subobj_ipv4), RO_SUBOBJ_TYPE_IPV4, | |
526 | loose_hop); | |
527 | obj->ip_addr.s_addr = rro_ipv4->s_addr; | |
528 | obj->prefix_length = prefix_length; | |
529 | obj->flag_local_protection = flag_local_prot; | |
530 | ||
531 | return obj; | |
532 | } | |
533 | ||
534 | struct pcep_ro_subobj_ipv6 * | |
535 | pcep_obj_create_ro_subobj_ipv6(bool loose_hop, const struct in6_addr *rro_ipv6, | |
536 | uint8_t prefix_length, bool flag_local_prot) | |
537 | { | |
538 | if (rro_ipv6 == NULL) { | |
539 | return NULL; | |
540 | } | |
541 | ||
542 | struct pcep_ro_subobj_ipv6 *obj = | |
543 | (struct pcep_ro_subobj_ipv6 *)pcep_obj_create_ro_subobj_common( | |
544 | sizeof(struct pcep_ro_subobj_ipv6), RO_SUBOBJ_TYPE_IPV6, | |
545 | loose_hop); | |
546 | obj->prefix_length = prefix_length; | |
547 | obj->flag_local_protection = flag_local_prot; | |
548 | memcpy(&obj->ip_addr, rro_ipv6, sizeof(struct in6_addr)); | |
549 | ||
550 | return obj; | |
551 | } | |
552 | ||
553 | struct pcep_ro_subobj_unnum * | |
554 | pcep_obj_create_ro_subobj_unnum(struct in_addr *router_id, uint32_t if_id) | |
555 | { | |
556 | if (router_id == NULL) { | |
557 | return NULL; | |
558 | } | |
559 | ||
560 | struct pcep_ro_subobj_unnum *obj = | |
561 | (struct pcep_ro_subobj_unnum *)pcep_obj_create_ro_subobj_common( | |
562 | sizeof(struct pcep_ro_subobj_unnum), | |
563 | RO_SUBOBJ_TYPE_UNNUM, false); | |
564 | obj->interface_id = if_id; | |
565 | obj->router_id.s_addr = router_id->s_addr; | |
566 | ||
567 | return obj; | |
568 | } | |
569 | ||
570 | struct pcep_ro_subobj_32label * | |
571 | pcep_obj_create_ro_subobj_32label(bool flag_global_label, uint8_t class_type, | |
572 | uint32_t label) | |
573 | { | |
574 | struct pcep_ro_subobj_32label *obj = (struct pcep_ro_subobj_32label *) | |
575 | pcep_obj_create_ro_subobj_common( | |
576 | sizeof(struct pcep_ro_subobj_32label), | |
577 | RO_SUBOBJ_TYPE_LABEL, false); | |
578 | obj->class_type = class_type; | |
579 | obj->flag_global_label = flag_global_label; | |
580 | obj->label = label; | |
581 | ||
582 | return obj; | |
583 | } | |
584 | ||
585 | struct pcep_ro_subobj_asn *pcep_obj_create_ro_subobj_asn(uint16_t asn) | |
586 | { | |
587 | struct pcep_ro_subobj_asn *obj = | |
588 | (struct pcep_ro_subobj_asn *)pcep_obj_create_ro_subobj_common( | |
589 | sizeof(struct pcep_ro_subobj_asn), RO_SUBOBJ_TYPE_ASN, | |
590 | false); | |
591 | obj->asn = asn; | |
592 | ||
593 | return obj; | |
594 | } | |
595 | ||
596 | /* Internal util function to create pcep_ro_subobj_sr sub-objects */ | |
597 | static struct pcep_ro_subobj_sr * | |
598 | pcep_obj_create_ro_subobj_sr_common(enum pcep_sr_subobj_nai nai_type, | |
599 | bool loose_hop, bool f_flag, bool s_flag, | |
600 | bool c_flag_in, bool m_flag_in) | |
601 | { | |
602 | struct pcep_ro_subobj_sr *obj = | |
603 | (struct pcep_ro_subobj_sr *)pcep_obj_create_ro_subobj_common( | |
604 | sizeof(struct pcep_ro_subobj_sr), RO_SUBOBJ_TYPE_SR, | |
605 | loose_hop); | |
606 | ||
607 | /* Flag logic according to draft-ietf-pce-segment-routing-16 */ | |
608 | bool c_flag = c_flag_in; | |
609 | bool m_flag = m_flag_in; | |
610 | if (s_flag) { | |
611 | c_flag = false; | |
612 | m_flag = false; | |
613 | } | |
614 | ||
615 | if (m_flag == false) { | |
616 | c_flag = false; | |
617 | } | |
618 | ||
619 | obj->nai_type = nai_type; | |
620 | obj->flag_f = f_flag; | |
621 | obj->flag_s = s_flag; | |
622 | obj->flag_c = c_flag; | |
623 | obj->flag_m = m_flag; | |
624 | ||
625 | return obj; | |
626 | } | |
627 | ||
628 | struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_nonai(bool loose_hop, | |
629 | uint32_t sid, | |
630 | bool c_flag, | |
631 | bool m_flag) | |
632 | { | |
633 | /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 | |
634 | * If NT=0, the F bit MUST be 1, the S bit MUST be zero and the | |
635 | * Length MUST be 8. */ | |
636 | struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( | |
637 | PCEP_SR_SUBOBJ_NAI_ABSENT, loose_hop, true, false, c_flag, | |
638 | m_flag); | |
639 | obj->sid = sid; | |
640 | ||
641 | return obj; | |
642 | } | |
643 | ||
644 | struct pcep_ro_subobj_sr * | |
645 | pcep_obj_create_ro_subobj_sr_ipv4_node(bool loose_hop, bool sid_absent, | |
646 | bool c_flag, bool m_flag, uint32_t sid, | |
647 | struct in_addr *ipv4_node_id) | |
648 | { | |
649 | if (ipv4_node_id == NULL) { | |
650 | return NULL; | |
651 | } | |
652 | ||
653 | /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 | |
654 | * If NT=1, the F bit MUST be zero. If the S bit is 1, the Length | |
655 | * MUST be 8, otherwise the Length MUST be 12 */ | |
656 | struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( | |
657 | PCEP_SR_SUBOBJ_NAI_IPV4_NODE, loose_hop, false, sid_absent, | |
658 | c_flag, m_flag); | |
659 | ||
660 | if (!sid_absent) { | |
661 | obj->sid = sid; | |
662 | } | |
663 | obj->nai_list = dll_initialize(); | |
664 | /* Since the IP has to be stored in the list, copy it so the caller | |
665 | * doesn't have any restrictions about the type of memory used | |
666 | * externally for the IP. This memory will be freed with the object is | |
667 | * freed. */ | |
668 | struct in_addr *ipv4_node_id_copy = | |
669 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in_addr)); | |
670 | ipv4_node_id_copy->s_addr = ipv4_node_id->s_addr; | |
671 | dll_append(obj->nai_list, ipv4_node_id_copy); | |
672 | ||
673 | return obj; | |
674 | } | |
675 | ||
676 | struct pcep_ro_subobj_sr * | |
677 | pcep_obj_create_ro_subobj_sr_ipv6_node(bool loose_hop, bool sid_absent, | |
678 | bool c_flag, bool m_flag, uint32_t sid, | |
679 | struct in6_addr *ipv6_node_id) | |
680 | { | |
681 | if (ipv6_node_id == NULL) { | |
682 | return NULL; | |
683 | } | |
684 | ||
685 | /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 | |
686 | * If NT=2, the F bit MUST be zero. If the S bit is 1, the Length | |
687 | * MUST be 20, otherwise the Length MUST be 24. */ | |
688 | struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( | |
689 | PCEP_SR_SUBOBJ_NAI_IPV6_NODE, loose_hop, false, sid_absent, | |
690 | c_flag, m_flag); | |
691 | ||
692 | if (!sid_absent) { | |
693 | obj->sid = sid; | |
694 | } | |
695 | obj->nai_list = dll_initialize(); | |
696 | struct in6_addr *ipv6_node_id_copy = | |
697 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr)); | |
698 | memcpy(ipv6_node_id_copy, ipv6_node_id, sizeof(struct in6_addr)); | |
699 | dll_append(obj->nai_list, ipv6_node_id_copy); | |
700 | ||
701 | return obj; | |
702 | } | |
703 | ||
704 | struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_ipv4_adj( | |
705 | bool loose_hop, bool sid_absent, bool c_flag, bool m_flag, uint32_t sid, | |
706 | struct in_addr *local_ipv4, struct in_addr *remote_ipv4) | |
707 | { | |
708 | if (local_ipv4 == NULL || remote_ipv4 == NULL) { | |
709 | return NULL; | |
710 | } | |
711 | ||
712 | /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 | |
713 | * If NT=3, the F bit MUST be zero. If the S bit is 1, the Length | |
714 | * MUST be 12, otherwise the Length MUST be 16 */ | |
715 | struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( | |
716 | PCEP_SR_SUBOBJ_NAI_IPV4_ADJACENCY, loose_hop, false, sid_absent, | |
717 | c_flag, m_flag); | |
718 | ||
719 | if (!sid_absent) { | |
720 | obj->sid = sid; | |
721 | } | |
722 | obj->nai_list = dll_initialize(); | |
723 | struct in_addr *local_ipv4_copy = | |
724 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in_addr)); | |
725 | struct in_addr *remote_ipv4_copy = | |
726 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in_addr)); | |
727 | local_ipv4_copy->s_addr = local_ipv4->s_addr; | |
728 | remote_ipv4_copy->s_addr = remote_ipv4->s_addr; | |
729 | dll_append(obj->nai_list, local_ipv4_copy); | |
730 | dll_append(obj->nai_list, remote_ipv4_copy); | |
731 | ||
732 | return obj; | |
733 | } | |
734 | ||
735 | struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_ipv6_adj( | |
736 | bool loose_hop, bool sid_absent, bool c_flag, bool m_flag, uint32_t sid, | |
737 | struct in6_addr *local_ipv6, struct in6_addr *remote_ipv6) | |
738 | { | |
739 | if (local_ipv6 == NULL || remote_ipv6 == NULL) { | |
740 | return NULL; | |
741 | } | |
742 | ||
743 | /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 | |
744 | * If NT=4, the F bit MUST be zero. If the S bit is 1, the Length | |
745 | * MUST be 36, otherwise the Length MUST be 40 */ | |
746 | struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( | |
747 | PCEP_SR_SUBOBJ_NAI_IPV6_ADJACENCY, loose_hop, false, sid_absent, | |
748 | c_flag, m_flag); | |
749 | ||
750 | if (!sid_absent) { | |
751 | obj->sid = sid; | |
752 | } | |
753 | obj->nai_list = dll_initialize(); | |
754 | struct in6_addr *local_ipv6_copy = | |
755 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr)); | |
756 | struct in6_addr *remote_ipv6_copy = | |
757 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr)); | |
758 | memcpy(local_ipv6_copy, local_ipv6, sizeof(struct in6_addr)); | |
759 | memcpy(remote_ipv6_copy, remote_ipv6, sizeof(struct in6_addr)); | |
760 | dll_append(obj->nai_list, local_ipv6_copy); | |
761 | dll_append(obj->nai_list, remote_ipv6_copy); | |
762 | ||
763 | return obj; | |
764 | } | |
765 | ||
766 | struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_unnumbered_ipv4_adj( | |
767 | bool loose_hop, bool sid_absent, bool c_flag, bool m_flag, uint32_t sid, | |
768 | uint32_t local_node_id, uint32_t local_if_id, uint32_t remote_node_id, | |
769 | uint32_t remote_if_id) | |
770 | { | |
771 | /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 | |
772 | * If NT=5, the F bit MUST be zero. If the S bit is 1, the Length | |
773 | * MUST be 20, otherwise the Length MUST be 24. */ | |
774 | struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( | |
775 | PCEP_SR_SUBOBJ_NAI_UNNUMBERED_IPV4_ADJACENCY, loose_hop, false, | |
776 | sid_absent, c_flag, m_flag); | |
777 | ||
778 | if (!sid_absent) { | |
779 | obj->sid = sid; | |
780 | } | |
781 | ||
782 | obj->nai_list = dll_initialize(); | |
783 | uint32_t *local_node_id_copy = | |
784 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t)); | |
785 | *local_node_id_copy = local_node_id; | |
786 | dll_append(obj->nai_list, local_node_id_copy); | |
787 | ||
788 | uint32_t *local_if_id_copy = | |
789 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t)); | |
790 | *local_if_id_copy = local_if_id; | |
791 | dll_append(obj->nai_list, local_if_id_copy); | |
792 | ||
793 | uint32_t *remote_node_id_copy = | |
794 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t)); | |
795 | *remote_node_id_copy = remote_node_id; | |
796 | dll_append(obj->nai_list, remote_node_id_copy); | |
797 | ||
798 | uint32_t *remote_if_id_copy = | |
799 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t)); | |
800 | *remote_if_id_copy = remote_if_id; | |
801 | dll_append(obj->nai_list, remote_if_id_copy); | |
802 | ||
803 | return obj; | |
804 | } | |
805 | ||
806 | struct pcep_ro_subobj_sr *pcep_obj_create_ro_subobj_sr_linklocal_ipv6_adj( | |
807 | bool loose_hop, bool sid_absent, bool c_flag, bool m_flag, uint32_t sid, | |
808 | struct in6_addr *local_ipv6, uint32_t local_if_id, | |
809 | struct in6_addr *remote_ipv6, uint32_t remote_if_id) | |
810 | { | |
811 | if (local_ipv6 == NULL || remote_ipv6 == NULL) { | |
812 | return NULL; | |
813 | } | |
814 | ||
815 | /* According to draft-ietf-pce-segment-routing-16#section-5.2.1 | |
816 | * If NT=6, the F bit MUST be zero. If the S bit is 1, the Length | |
817 | * MUST be 44, otherwise the Length MUST be 48 */ | |
818 | struct pcep_ro_subobj_sr *obj = pcep_obj_create_ro_subobj_sr_common( | |
819 | PCEP_SR_SUBOBJ_NAI_LINK_LOCAL_IPV6_ADJACENCY, loose_hop, false, | |
820 | sid_absent, c_flag, m_flag); | |
821 | ||
822 | if (!sid_absent) { | |
823 | obj->sid = sid; | |
824 | } | |
825 | obj->nai_list = dll_initialize(); | |
826 | struct in6_addr *local_ipv6_copy = | |
827 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr)); | |
828 | memcpy(local_ipv6_copy, local_ipv6, sizeof(struct in6_addr)); | |
829 | dll_append(obj->nai_list, local_ipv6_copy); | |
830 | ||
831 | uint32_t *local_if_id_copy = | |
832 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t)); | |
833 | *local_if_id_copy = local_if_id; | |
834 | dll_append(obj->nai_list, local_if_id_copy); | |
835 | ||
836 | struct in6_addr *remote_ipv6_copy = | |
837 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(struct in6_addr)); | |
838 | memcpy(remote_ipv6_copy, remote_ipv6, sizeof(struct in6_addr)); | |
839 | dll_append(obj->nai_list, remote_ipv6_copy); | |
840 | ||
841 | uint32_t *remote_if_id_copy = | |
842 | pceplib_malloc(PCEPLIB_MESSAGES, sizeof(uint32_t)); | |
843 | *remote_if_id_copy = remote_if_id; | |
844 | dll_append(obj->nai_list, remote_if_id_copy); | |
845 | ||
846 | return obj; | |
847 | } |