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cf9b9f77 OD |
1 | /* |
2 | * This is an implementation of RFC7684 OSPFv2 Prefix/Link Attribute | |
3 | * Advertisement | |
4 | * | |
5 | * Module name: Extended Prefix/Link Opaque LSA | |
6 | * | |
cf9b9f77 | 7 | * Author: Olivier Dugeon <olivier.dugeon@orange.com> |
7743f2f8 | 8 | * Author: Anselme Sawadogo <anselmesawadogo@gmail.com> |
cf9b9f77 | 9 | * |
7743f2f8 | 10 | * Copyright (C) 2016 - 2018 Orange Labs http://www.orange.com |
cf9b9f77 | 11 | * |
7743f2f8 OD |
12 | * This program is free software; you can redistribute it and/or modify it |
13 | * under the terms of the GNU General Public License as published by the Free | |
14 | * Software Foundation; either version 2 of the License, or (at your option) | |
15 | * any later version. | |
cf9b9f77 | 16 | * |
7743f2f8 OD |
17 | * This program is distributed in the hope that it will be useful, but WITHOUT |
18 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
19 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
20 | * more details. | |
cf9b9f77 | 21 | * |
7743f2f8 OD |
22 | * You should have received a copy of the GNU General Public License along |
23 | * with this program; see the file COPYING; if not, write to the Free Software | |
24 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
cf9b9f77 OD |
25 | */ |
26 | ||
27 | #include <zebra.h> | |
28 | #include <math.h> | |
29 | #include <stdio.h> | |
30 | #include <stdlib.h> | |
31 | ||
32 | #include "linklist.h" | |
33 | #include "prefix.h" | |
34 | #include "if.h" | |
35 | #include "table.h" | |
36 | #include "memory.h" | |
37 | #include "command.h" | |
38 | #include "vty.h" | |
39 | #include "stream.h" | |
40 | #include "log.h" | |
41 | #include "thread.h" | |
42 | #include "hash.h" | |
43 | #include "sockunion.h" /* for inet_aton() */ | |
44 | #include "network.h" | |
45 | #include "if.h" | |
46 | #include "libospf.h" /* for ospf interface types */ | |
47 | ||
48 | #include "ospfd/ospfd.h" | |
49 | #include "ospfd/ospf_interface.h" | |
50 | #include "ospfd/ospf_ism.h" | |
51 | #include "ospfd/ospf_asbr.h" | |
52 | #include "ospfd/ospf_lsa.h" | |
53 | #include "ospfd/ospf_lsdb.h" | |
54 | #include "ospfd/ospf_neighbor.h" | |
55 | #include "ospfd/ospf_nsm.h" | |
56 | #include "ospfd/ospf_flood.h" | |
57 | #include "ospfd/ospf_packet.h" | |
58 | #include "ospfd/ospf_spf.h" | |
59 | #include "ospfd/ospf_dump.h" | |
60 | #include "ospfd/ospf_route.h" | |
61 | #include "ospfd/ospf_ase.h" | |
62 | #include "ospfd/ospf_zebra.h" | |
63 | #include "ospfd/ospf_sr.h" | |
64 | #include "ospfd/ospf_ext.h" | |
85c9b439 | 65 | #include "ospfd/ospf_errors.h" |
cf9b9f77 OD |
66 | |
67 | /* Following structure are internal use only. */ | |
68 | ||
69 | /* | |
70 | * Global variable to manage Extended Prefix/Link Opaque LSA on this node. | |
71 | * Note that all parameter values are stored in network byte order. | |
72 | */ | |
73 | static struct ospf_ext_lp OspfEXT; | |
74 | ||
7743f2f8 OD |
75 | /* |
76 | * ----------------------------------------------------------------------- | |
77 | * Followings are initialize/terminate functions for Extended Prefix/Link | |
78 | * Opaque LSA handling. | |
79 | * ----------------------------------------------------------------------- | |
80 | */ | |
cf9b9f77 OD |
81 | |
82 | /* Extended Prefix Opaque LSA related callback functions */ | |
cf9b9f77 OD |
83 | static void ospf_ext_pref_show_info(struct vty *vty, struct ospf_lsa *lsa); |
84 | static int ospf_ext_pref_lsa_originate(void *arg); | |
85 | static struct ospf_lsa *ospf_ext_pref_lsa_refresh(struct ospf_lsa *lsa); | |
86 | static void ospf_ext_pref_lsa_schedule(struct ext_itf *exti, | |
87 | enum lsa_opcode opcode); | |
88 | /* Extended Link Opaque LSA related callback functions */ | |
89 | static int ospf_ext_link_new_if(struct interface *ifp); | |
90 | static int ospf_ext_link_del_if(struct interface *ifp); | |
731271b0 | 91 | static void ospf_ext_ism_change(struct ospf_interface *oi, int old_status); |
cf9b9f77 OD |
92 | static void ospf_ext_link_nsm_change(struct ospf_neighbor *nbr, int old_status); |
93 | static void ospf_ext_link_show_info(struct vty *vty, struct ospf_lsa *lsa); | |
94 | static int ospf_ext_link_lsa_originate(void *arg); | |
95 | static struct ospf_lsa *ospf_ext_link_lsa_refresh(struct ospf_lsa *lsa); | |
96 | static void ospf_ext_link_lsa_schedule(struct ext_itf *exti, | |
97 | enum lsa_opcode opcode); | |
98 | static void ospf_ext_lsa_schedule(struct ext_itf *exti, enum lsa_opcode op); | |
99 | static int ospf_ext_link_lsa_update(struct ospf_lsa *lsa); | |
100 | static int ospf_ext_pref_lsa_update(struct ospf_lsa *lsa); | |
6f751f14 | 101 | static void ospf_ext_link_delete_adj_sid(struct ext_itf *exti); |
cf9b9f77 OD |
102 | static void del_ext_info(void *val); |
103 | ||
104 | /* | |
105 | * Extended Link/Prefix initialization | |
106 | * | |
107 | * @param - none | |
108 | * | |
109 | * @return - 0 if OK, <> 0 otherwise | |
110 | */ | |
111 | int ospf_ext_init(void) | |
112 | { | |
113 | int rc = 0; | |
114 | ||
115 | memset(&OspfEXT, 0, sizeof(struct ospf_ext_lp)); | |
116 | OspfEXT.enabled = false; | |
117 | /* Only Area flooding is supported yet */ | |
118 | OspfEXT.scope = OSPF_OPAQUE_AREA_LSA; | |
119 | /* Initialize interface list */ | |
120 | OspfEXT.iflist = list_new(); | |
121 | OspfEXT.iflist->del = del_ext_info; | |
122 | ||
7743f2f8 | 123 | zlog_info("EXT (%s): Register Extended Link Opaque LSA", __func__); |
cf9b9f77 OD |
124 | rc = ospf_register_opaque_functab( |
125 | OSPF_OPAQUE_AREA_LSA, OPAQUE_TYPE_EXTENDED_LINK_LSA, | |
996c9314 LB |
126 | ospf_ext_link_new_if, /* new if */ |
127 | ospf_ext_link_del_if, /* del if */ | |
731271b0 | 128 | ospf_ext_ism_change, /* ism change */ |
cf9b9f77 OD |
129 | ospf_ext_link_nsm_change, /* nsm change */ |
130 | NULL, /* Write router config. */ | |
131 | NULL, /* Write interface conf. */ | |
132 | NULL, /* Write debug config. */ | |
133 | ospf_ext_link_show_info, /* Show LSA info */ | |
134 | ospf_ext_link_lsa_originate, /* Originate LSA */ | |
135 | ospf_ext_link_lsa_refresh, /* Refresh LSA */ | |
136 | ospf_ext_link_lsa_update, /* new_lsa_hook */ | |
137 | NULL); /* del_lsa_hook */ | |
138 | ||
139 | if (rc != 0) { | |
cf444bcf | 140 | flog_warn(EC_OSPF_OPAQUE_REGISTRATION, |
85c9b439 | 141 | "EXT (%s): Failed to register Extended Link LSA", |
7743f2f8 | 142 | __func__); |
cf9b9f77 OD |
143 | return rc; |
144 | } | |
145 | ||
7743f2f8 | 146 | zlog_info("EXT (%s): Register Extended Prefix Opaque LSA", __func__); |
cf9b9f77 OD |
147 | rc = ospf_register_opaque_functab( |
148 | OspfEXT.scope, OPAQUE_TYPE_EXTENDED_PREFIX_LSA, | |
7743f2f8 OD |
149 | NULL, /* new if handle by link */ |
150 | NULL, /* del if handle by link */ | |
731271b0 | 151 | NULL, /* ism change */ |
cf9b9f77 OD |
152 | NULL, /* nsm change */ |
153 | ospf_sr_config_write_router, /* Write router config. */ | |
154 | NULL, /* Write interface conf. */ | |
155 | NULL, /* Write debug config. */ | |
156 | ospf_ext_pref_show_info, /* Show LSA info */ | |
157 | ospf_ext_pref_lsa_originate, /* Originate LSA */ | |
158 | ospf_ext_pref_lsa_refresh, /* Refresh LSA */ | |
159 | ospf_ext_pref_lsa_update, /* new_lsa_hook */ | |
160 | NULL); /* del_lsa_hook */ | |
161 | if (rc != 0) { | |
cf444bcf | 162 | flog_warn(EC_OSPF_OPAQUE_REGISTRATION, |
85c9b439 | 163 | "EXT (%s): Failed to register Extended Prefix LSA", |
7743f2f8 | 164 | __func__); |
cf9b9f77 OD |
165 | return rc; |
166 | } | |
167 | ||
168 | return rc; | |
169 | } | |
170 | ||
171 | /* | |
172 | * Extended Link/Prefix termination function | |
173 | * | |
bcf4475e | 174 | * @param - none |
cf9b9f77 OD |
175 | * @return - none |
176 | */ | |
177 | void ospf_ext_term(void) | |
178 | { | |
179 | ||
89f60109 DS |
180 | if ((OspfEXT.scope == OSPF_OPAQUE_AREA_LSA) |
181 | || (OspfEXT.scope == OSPF_OPAQUE_AS_LSA)) | |
bcf4475e OD |
182 | ospf_delete_opaque_functab(OspfEXT.scope, |
183 | OPAQUE_TYPE_EXTENDED_PREFIX_LSA); | |
184 | ||
185 | ospf_delete_opaque_functab(OSPF_OPAQUE_AREA_LSA, | |
186 | OPAQUE_TYPE_EXTENDED_LINK_LSA); | |
187 | ||
6a154c88 | 188 | list_delete(&OspfEXT.iflist); |
cf9b9f77 OD |
189 | OspfEXT.scope = 0; |
190 | OspfEXT.enabled = false; | |
191 | ||
bcf4475e OD |
192 | return; |
193 | } | |
194 | ||
195 | /* | |
196 | * Extended Link/Prefix finish function | |
197 | * | |
198 | * @param - none | |
199 | * @return - none | |
200 | */ | |
201 | void ospf_ext_finish(void) | |
202 | { | |
731271b0 OD |
203 | |
204 | struct listnode *node; | |
205 | struct ext_itf *exti; | |
206 | ||
207 | /* Flush Router Info LSA */ | |
208 | for (ALL_LIST_ELEMENTS_RO(OspfEXT.iflist, node, exti)) | |
209 | if (CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED)) | |
210 | ospf_ext_lsa_schedule(exti, FLUSH_THIS_LSA); | |
211 | ||
bcf4475e | 212 | OspfEXT.enabled = false; |
cf9b9f77 OD |
213 | } |
214 | ||
7743f2f8 OD |
215 | /* |
216 | * --------------------------------------------------------------------- | |
cf9b9f77 OD |
217 | * Followings are control functions for Extended Prefix/Link Opaque LSA |
218 | * parameters management. | |
7743f2f8 OD |
219 | * --------------------------------------------------------------------- |
220 | */ | |
221 | ||
cf9b9f77 OD |
222 | /* Functions to free memory space */ |
223 | static void del_ext_info(void *val) | |
224 | { | |
225 | XFREE(MTYPE_OSPF_EXT_PARAMS, val); | |
cf9b9f77 OD |
226 | } |
227 | ||
228 | /* Increment instance value for Extended Prefix Opaque LSAs Opaque ID field */ | |
93f0a26e | 229 | static uint32_t get_ext_pref_instance_value(void) |
cf9b9f77 | 230 | { |
93f0a26e | 231 | static uint32_t seqno = 0; |
cf9b9f77 OD |
232 | |
233 | if (seqno < MAX_LEGAL_EXT_INSTANCE_NUM) | |
234 | seqno += 1; | |
235 | else | |
236 | seqno = 1; /* Avoid zero. */ | |
237 | ||
238 | return seqno; | |
239 | } | |
240 | ||
241 | /* Increment instance value for Extended Link Opaque LSAs Opaque ID field */ | |
93f0a26e | 242 | static uint32_t get_ext_link_instance_value(void) |
cf9b9f77 | 243 | { |
93f0a26e | 244 | static uint32_t seqno = 0; |
cf9b9f77 OD |
245 | |
246 | if (seqno < MAX_LEGAL_EXT_INSTANCE_NUM) | |
247 | seqno += 1; | |
248 | else | |
249 | seqno = 1; /* Avoid zero. */ | |
250 | ||
251 | return seqno; | |
252 | } | |
253 | ||
254 | /* Lookup Extended Prefix/Links by ifp from OspfEXT struct iflist */ | |
255 | static struct ext_itf *lookup_ext_by_ifp(struct interface *ifp) | |
256 | { | |
257 | struct listnode *node, *nnode; | |
258 | struct ext_itf *exti; | |
259 | ||
260 | for (ALL_LIST_ELEMENTS(OspfEXT.iflist, node, nnode, exti)) | |
261 | if (exti->ifp == ifp) | |
262 | return exti; | |
263 | ||
264 | return NULL; | |
265 | } | |
266 | ||
267 | /* Lookup Extended Prefix/Links by LSA ID from OspfEXT struct iflist */ | |
268 | static struct ext_itf *lookup_ext_by_instance(struct ospf_lsa *lsa) | |
269 | { | |
270 | struct listnode *node; | |
271 | struct ext_itf *exti; | |
db28a51f OD |
272 | uint32_t key = GET_OPAQUE_ID(ntohl(lsa->data->id.s_addr)); |
273 | uint8_t type = GET_OPAQUE_TYPE(ntohl(lsa->data->id.s_addr)); | |
274 | ||
cf9b9f77 OD |
275 | |
276 | for (ALL_LIST_ELEMENTS_RO(OspfEXT.iflist, node, exti)) | |
db28a51f | 277 | if ((exti->instance == key) && (exti->type == type)) |
cf9b9f77 OD |
278 | return exti; |
279 | ||
cf9b9f77 OD |
280 | return NULL; |
281 | } | |
282 | ||
7743f2f8 OD |
283 | /* |
284 | * ---------------------------------------------------------------------- | |
cf9b9f77 OD |
285 | * The underlying subsection defines setters and unsetters to create and |
286 | * delete tlvs and subtlvs | |
7743f2f8 OD |
287 | * ---------------------------------------------------------------------- |
288 | */ | |
cf9b9f77 OD |
289 | |
290 | /* Extended Prefix TLV - RFC7684 section 2.1 */ | |
93f0a26e OD |
291 | static void set_ext_prefix(struct ext_itf *exti, uint8_t route_type, |
292 | uint8_t flags, struct prefix_ipv4 p) | |
cf9b9f77 OD |
293 | { |
294 | ||
295 | TLV_TYPE(exti->prefix) = htons(EXT_TLV_PREFIX); | |
296 | /* Warning: Size must be adjust depending of subTLV's */ | |
297 | TLV_LEN(exti->prefix) = htons(EXT_TLV_PREFIX_SIZE); | |
298 | exti->prefix.route_type = route_type; | |
299 | exti->prefix.flags = flags; | |
300 | /* Only Address Family Ipv4 (0) is defined in RFC 7684 */ | |
301 | exti->prefix.af = 0; | |
302 | exti->prefix.pref_length = p.prefixlen; | |
303 | exti->prefix.address = p.prefix; | |
270e66a2 OD |
304 | |
305 | SET_FLAG(exti->flags, EXT_LPFLG_LSA_ACTIVE); | |
cf9b9f77 OD |
306 | } |
307 | ||
308 | /* Extended Link TLV - RFC7684 section 3.1 */ | |
93f0a26e | 309 | static void set_ext_link(struct ext_itf *exti, uint8_t type, struct in_addr id, |
cf9b9f77 OD |
310 | struct in_addr data) |
311 | { | |
312 | ||
313 | TLV_TYPE(exti->link) = htons(EXT_TLV_LINK); | |
314 | /* Warning: Size must be adjust depending of subTLV's */ | |
315 | TLV_LEN(exti->link) = htons(EXT_TLV_LINK_SIZE); | |
316 | exti->link.link_type = type; | |
317 | exti->link.link_id = id; | |
318 | exti->link.link_data = data; | |
319 | } | |
320 | ||
321 | /* Prefix SID SubTLV - section 5 */ | |
93f0a26e | 322 | static void set_prefix_sid(struct ext_itf *exti, uint8_t algorithm, |
7743f2f8 | 323 | uint32_t value, int value_type, uint8_t flags) |
cf9b9f77 OD |
324 | { |
325 | ||
cf9b9f77 OD |
326 | if ((algorithm != SR_ALGORITHM_SPF) |
327 | && (algorithm != SR_ALGORITHM_STRICT_SPF)) { | |
cf444bcf | 328 | flog_err(EC_OSPF_INVALID_ALGORITHM, |
89f60109 DS |
329 | "EXT (%s): unrecognized algorithm, not SPF or S-SPF", |
330 | __func__); | |
cf9b9f77 OD |
331 | return; |
332 | } | |
333 | ||
7743f2f8 | 334 | /* Update flags according to the type of value field: label or index */ |
cf9b9f77 | 335 | if (value_type == SID_LABEL) |
7743f2f8 | 336 | SET_FLAG(flags, EXT_SUBTLV_PREFIX_SID_VFLG); |
cf9b9f77 OD |
337 | |
338 | /* set prefix sid subtlv for an extended prefix tlv */ | |
339 | TLV_TYPE(exti->node_sid) = htons(EXT_SUBTLV_PREFIX_SID); | |
340 | exti->node_sid.algorithm = algorithm; | |
341 | exti->node_sid.flags = flags; | |
342 | exti->node_sid.mtid = 0; /* Multi-Topology is not supported */ | |
343 | ||
344 | /* Set Label or Index value */ | |
345 | if (value_type == SID_LABEL) { | |
d922605d OD |
346 | TLV_LEN(exti->node_sid) = |
347 | htons(SID_LABEL_SIZE(EXT_SUBTLV_PREFIX_SID_SIZE)); | |
cf9b9f77 OD |
348 | exti->node_sid.value = htonl(SET_LABEL(value)); |
349 | } else { | |
d922605d OD |
350 | TLV_LEN(exti->node_sid) = |
351 | htons(SID_INDEX_SIZE(EXT_SUBTLV_PREFIX_SID_SIZE)); | |
cf9b9f77 OD |
352 | exti->node_sid.value = htonl(value); |
353 | } | |
cf9b9f77 OD |
354 | } |
355 | ||
356 | /* Adjacency SID SubTLV - section 6.1 */ | |
93f0a26e | 357 | static void set_adj_sid(struct ext_itf *exti, bool backup, uint32_t value, |
cf9b9f77 OD |
358 | int value_type) |
359 | { | |
360 | int index; | |
93f0a26e | 361 | uint8_t flags; |
cf9b9f77 OD |
362 | |
363 | /* Determine which ADJ_SID must be set: nominal or backup */ | |
364 | if (backup) { | |
365 | flags = EXT_SUBTLV_LINK_ADJ_SID_BFLG; | |
366 | index = 1; | |
367 | } else { | |
368 | index = 0; | |
369 | flags = 0; | |
370 | } | |
371 | ||
372 | /* Set Header */ | |
373 | TLV_TYPE(exti->adj_sid[index]) = htons(EXT_SUBTLV_ADJ_SID); | |
374 | ||
375 | /* Only Local ADJ-SID is supported for the moment */ | |
376 | SET_FLAG(flags, EXT_SUBTLV_LINK_ADJ_SID_LFLG); | |
377 | ||
378 | exti->adj_sid[index].mtid = 0; /* Multi-Topology is not supported */ | |
379 | ||
380 | /* Adjust Length, Flags and Value depending on the type of Label */ | |
381 | if (value_type == SID_LABEL) { | |
382 | SET_FLAG(flags, EXT_SUBTLV_LINK_ADJ_SID_VFLG); | |
d922605d OD |
383 | TLV_LEN(exti->adj_sid[index]) = |
384 | htons(SID_LABEL_SIZE(EXT_SUBTLV_ADJ_SID_SIZE)); | |
cf9b9f77 OD |
385 | exti->adj_sid[index].value = htonl(SET_LABEL(value)); |
386 | } else { | |
387 | UNSET_FLAG(flags, EXT_SUBTLV_LINK_ADJ_SID_VFLG); | |
d922605d OD |
388 | TLV_LEN(exti->adj_sid[index]) = |
389 | htons(SID_INDEX_SIZE(EXT_SUBTLV_ADJ_SID_SIZE)); | |
cf9b9f77 OD |
390 | exti->adj_sid[index].value = htonl(value); |
391 | } | |
392 | ||
393 | exti->adj_sid[index].flags = flags; /* Set computed flags */ | |
394 | exti->adj_sid[index].mtid = 0; /* Multi-Topology is not supported */ | |
395 | exti->adj_sid[index].weight = 0; /* Load-Balancing is not supported */ | |
cf9b9f77 OD |
396 | } |
397 | ||
398 | /* LAN Adjacency SID SubTLV - section 6.2 */ | |
93f0a26e | 399 | static void set_lan_adj_sid(struct ext_itf *exti, bool backup, uint32_t value, |
cf9b9f77 OD |
400 | int value_type, struct in_addr neighbor_id) |
401 | { | |
402 | ||
403 | int index; | |
93f0a26e | 404 | uint8_t flags; |
cf9b9f77 OD |
405 | |
406 | /* Determine which ADJ_SID must be set: nominal or backup */ | |
407 | if (backup) { | |
408 | flags = EXT_SUBTLV_LINK_ADJ_SID_BFLG; | |
409 | index = 1; | |
410 | } else { | |
411 | index = 0; | |
412 | flags = 0; | |
413 | } | |
414 | ||
415 | /* Set Header */ | |
d922605d | 416 | TLV_TYPE(exti->lan_sid[index]) = htons(EXT_SUBTLV_LAN_ADJ_SID); |
cf9b9f77 OD |
417 | |
418 | /* Only Local ADJ-SID is supported for the moment */ | |
419 | SET_FLAG(flags, EXT_SUBTLV_LINK_ADJ_SID_LFLG); | |
420 | ||
421 | /* Adjust Length, Flags and Value depending on the type of Label */ | |
422 | if (value_type == SID_LABEL) { | |
423 | SET_FLAG(flags, EXT_SUBTLV_LINK_ADJ_SID_VFLG); | |
d922605d OD |
424 | TLV_LEN(exti->lan_sid[index]) = |
425 | htons(SID_LABEL_SIZE(EXT_SUBTLV_PREFIX_RANGE_SIZE)); | |
cf9b9f77 OD |
426 | exti->lan_sid[index].value = htonl(SET_LABEL(value)); |
427 | } else { | |
428 | UNSET_FLAG(flags, EXT_SUBTLV_LINK_ADJ_SID_VFLG); | |
d922605d OD |
429 | TLV_LEN(exti->lan_sid[index]) = |
430 | htons(SID_INDEX_SIZE(EXT_SUBTLV_PREFIX_RANGE_SIZE)); | |
cf9b9f77 OD |
431 | exti->lan_sid[index].value = htonl(value); |
432 | } | |
433 | ||
434 | exti->lan_sid[index].flags = flags; /* Set computed flags */ | |
435 | exti->lan_sid[index].mtid = 0; /* Multi-Topology is not supported */ | |
436 | exti->lan_sid[index].weight = 0; /* Load-Balancing is not supported */ | |
437 | exti->lan_sid[index].neighbor_id = neighbor_id; | |
cf9b9f77 OD |
438 | } |
439 | ||
6f751f14 OD |
440 | static void unset_adjacency_sid(struct ext_itf *exti) |
441 | { | |
442 | /* Reset Adjacency TLV */ | |
443 | if (exti->type == ADJ_SID) { | |
444 | TLV_TYPE(exti->adj_sid[0]) = 0; | |
445 | TLV_TYPE(exti->adj_sid[1]) = 0; | |
446 | } | |
447 | /* or Lan-Adjacency TLV */ | |
448 | if (exti->type == LAN_ADJ_SID) { | |
449 | TLV_TYPE(exti->lan_sid[0]) = 0; | |
450 | TLV_TYPE(exti->lan_sid[1]) = 0; | |
451 | } | |
452 | } | |
453 | ||
cf9b9f77 OD |
454 | /* Experimental SubTLV from Cisco */ |
455 | static void set_rmt_itf_addr(struct ext_itf *exti, struct in_addr rmtif) | |
456 | { | |
457 | ||
458 | TLV_TYPE(exti->rmt_itf_addr) = htons(EXT_SUBTLV_RMT_ITF_ADDR); | |
459 | TLV_LEN(exti->rmt_itf_addr) = htons(sizeof(struct in_addr)); | |
460 | exti->rmt_itf_addr.value = rmtif; | |
cf9b9f77 OD |
461 | } |
462 | ||
21baf89a OD |
463 | /* Delete Extended LSA */ |
464 | static void ospf_extended_lsa_delete(struct ext_itf *exti) | |
465 | { | |
466 | ||
a351b3e4 OD |
467 | /* Avoid deleting LSA if Extended is not enable */ |
468 | if (!OspfEXT.enabled) | |
469 | return; | |
470 | ||
21baf89a OD |
471 | /* Process only Active Extended Prefix/Link LSA */ |
472 | if (!CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ACTIVE)) | |
473 | return; | |
474 | ||
475 | osr_debug("EXT (%s): Disable %s%s%s-SID on interface %s", __func__, | |
6f751f14 | 476 | exti->stype == LOCAL_SID ? "Prefix" : "", |
21baf89a OD |
477 | exti->stype == ADJ_SID ? "Adjacency" : "", |
478 | exti->stype == LAN_ADJ_SID ? "LAN-Adjacency" : "", | |
479 | exti->ifp->name); | |
480 | ||
481 | /* Flush LSA if already engaged */ | |
482 | if (CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED)) { | |
483 | ospf_ext_lsa_schedule(exti, FLUSH_THIS_LSA); | |
484 | UNSET_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED); | |
485 | } | |
486 | ||
487 | /* De-activate this Extended Prefix/Link and remove corresponding | |
488 | * Segment-Routing Prefix-SID or (LAN)-ADJ-SID */ | |
6f751f14 OD |
489 | if (exti->stype == ADJ_SID || exti->stype == LAN_ADJ_SID) |
490 | ospf_ext_link_delete_adj_sid(exti); | |
491 | else | |
492 | ospf_sr_ext_itf_delete(exti); | |
21baf89a OD |
493 | } |
494 | ||
cf9b9f77 OD |
495 | /* |
496 | * Update Extended prefix SID index for Loopback interface type | |
497 | * | |
498 | * @param ifname - Loopback interface name | |
499 | * @param index - new value for the prefix SID of this interface | |
500 | * @param p - prefix for this interface or NULL if Extended Prefix | |
501 | * should be remove | |
502 | * | |
503 | * @return instance number if update is OK, 0 otherwise | |
504 | */ | |
db28a51f | 505 | uint32_t ospf_ext_schedule_prefix_index(struct interface *ifp, uint32_t index, |
996c9314 | 506 | struct prefix_ipv4 *p, uint8_t flags) |
cf9b9f77 OD |
507 | { |
508 | int rc = 0; | |
509 | struct ext_itf *exti; | |
510 | ||
511 | /* Find Extended Prefix interface */ | |
512 | exti = lookup_ext_by_ifp(ifp); | |
513 | if (exti == NULL) | |
514 | return rc; | |
515 | ||
516 | if (p != NULL) { | |
3efd0893 | 517 | osr_debug("EXT (%s): Schedule new prefix %pFX with index %u on interface %s", __func__, p, index, ifp->name); |
cf9b9f77 OD |
518 | |
519 | /* Set first Extended Prefix then the Prefix SID information */ | |
520 | set_ext_prefix(exti, OSPF_PATH_INTRA_AREA, EXT_TLV_PREF_NFLG, | |
521 | *p); | |
7743f2f8 | 522 | set_prefix_sid(exti, SR_ALGORITHM_SPF, index, SID_INDEX, flags); |
cf9b9f77 OD |
523 | |
524 | /* Try to Schedule LSA */ | |
731271b0 OD |
525 | if (CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ACTIVE)) { |
526 | if (CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED)) | |
527 | ospf_ext_pref_lsa_schedule(exti, | |
528 | REFRESH_THIS_LSA); | |
529 | else | |
530 | ospf_ext_pref_lsa_schedule( | |
531 | exti, REORIGINATE_THIS_LSA); | |
532 | } | |
cf9b9f77 | 533 | } else { |
b37eb79c OD |
534 | osr_debug("EXT (%s): Remove prefix for interface %s", __func__, |
535 | ifp->name); | |
cf9b9f77 | 536 | |
0d174b66 | 537 | if (CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED)) |
cf9b9f77 | 538 | ospf_ext_pref_lsa_schedule(exti, FLUSH_THIS_LSA); |
cf9b9f77 OD |
539 | } |
540 | ||
db28a51f | 541 | return SET_OPAQUE_LSID(exti->type, exti->instance); |
cf9b9f77 OD |
542 | } |
543 | ||
6f751f14 OD |
544 | /** |
545 | * Update Adjacecny-SID for Extended Link LSA | |
546 | * | |
547 | * @param exti Extended Link information | |
548 | */ | |
549 | static void ospf_ext_link_update_adj_sid(struct ext_itf *exti) | |
550 | { | |
551 | mpls_label_t label; | |
552 | mpls_label_t bck_label; | |
553 | ||
554 | /* Process only (LAN)Adjacency-SID Type */ | |
555 | if (exti->stype != ADJ_SID && exti->stype != LAN_ADJ_SID) | |
556 | return; | |
557 | ||
558 | /* Request Primary & Backup Labels from Label Manager */ | |
559 | bck_label = ospf_sr_local_block_request_label(); | |
560 | label = ospf_sr_local_block_request_label(); | |
561 | if (bck_label == MPLS_INVALID_LABEL || label == MPLS_INVALID_LABEL) { | |
562 | if (CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED)) | |
563 | ospf_ext_lsa_schedule(exti, FLUSH_THIS_LSA); | |
564 | return; | |
565 | } | |
566 | ||
567 | /* Set Adjacency-SID, backup first */ | |
568 | if (exti->stype == ADJ_SID) { | |
569 | set_adj_sid(exti, true, bck_label, SID_LABEL); | |
570 | set_adj_sid(exti, false, label, SID_LABEL); | |
571 | } else { | |
83df36e8 | 572 | set_lan_adj_sid(exti, true, bck_label, SID_LABEL, |
6f751f14 | 573 | exti->lan_sid[0].neighbor_id); |
83df36e8 | 574 | set_lan_adj_sid(exti, false, label, SID_LABEL, |
6f751f14 OD |
575 | exti->lan_sid[1].neighbor_id); |
576 | } | |
577 | ||
578 | /* Finally, add corresponding SR Link in SRDB & MPLS LFIB */ | |
579 | SET_FLAG(exti->flags, EXT_LPFLG_FIB_ENTRY_SET); | |
580 | ospf_sr_ext_itf_add(exti); | |
581 | } | |
582 | ||
583 | /** | |
584 | * Delete Adjacecny-SID for Extended Link LSA | |
585 | * | |
586 | * @param exti Extended Link information | |
587 | */ | |
588 | static void ospf_ext_link_delete_adj_sid(struct ext_itf *exti) | |
589 | { | |
590 | /* Process only (LAN)Adjacency-SID Type */ | |
591 | if (exti->stype != ADJ_SID && exti->stype != LAN_ADJ_SID) | |
592 | return; | |
593 | ||
594 | /* Release Primary & Backup Labels from Label Manager */ | |
595 | if (exti->stype == ADJ_SID) { | |
596 | ospf_sr_local_block_release_label(exti->adj_sid[0].value); | |
597 | ospf_sr_local_block_release_label(exti->adj_sid[1].value); | |
598 | } else { | |
83df36e8 OD |
599 | ospf_sr_local_block_release_label(exti->lan_sid[0].value); |
600 | ospf_sr_local_block_release_label(exti->lan_sid[1].value); | |
6f751f14 OD |
601 | } |
602 | /* And reset corresponding TLV */ | |
603 | unset_adjacency_sid(exti); | |
604 | ||
605 | /* Finally, remove corresponding SR Link in SRDB & MPLS LFIB */ | |
606 | UNSET_FLAG(exti->flags, EXT_LPFLG_FIB_ENTRY_SET); | |
607 | ospf_sr_ext_itf_delete(exti); | |
608 | } | |
609 | ||
610 | /** | |
611 | * Update Extended Link LSA once Segment Routing Label Block has been changed. | |
612 | */ | |
613 | void ospf_ext_link_srlb_update(void) | |
614 | { | |
615 | struct listnode *node; | |
616 | struct ext_itf *exti; | |
617 | ||
618 | ||
619 | osr_debug("EXT (%s): Update Extended Links with new SRLB", __func__); | |
620 | ||
621 | /* Update all Extended Link Adjaceny-SID */ | |
622 | for (ALL_LIST_ELEMENTS_RO(OspfEXT.iflist, node, exti)) { | |
623 | /* Skip Extended Prefix */ | |
624 | if (exti->stype == PREF_SID || exti->stype == LOCAL_SID) | |
625 | continue; | |
626 | ||
627 | /* Skip inactive Extended Link */ | |
628 | if (!CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ACTIVE)) | |
629 | continue; | |
630 | ||
631 | ospf_ext_link_update_adj_sid(exti); | |
632 | } | |
633 | } | |
634 | ||
cf9b9f77 OD |
635 | /* |
636 | * Used by Segment Routing to activate/deactivate Extended Link/Prefix flooding | |
637 | * | |
638 | * @param enable To activate or not Segment Routing Extended LSA flooding | |
639 | * | |
640 | * @return none | |
641 | */ | |
642 | void ospf_ext_update_sr(bool enable) | |
643 | { | |
644 | struct listnode *node; | |
645 | struct ext_itf *exti; | |
646 | ||
b37eb79c OD |
647 | osr_debug("EXT (%s): %s Extended LSAs for Segment Routing ", __func__, |
648 | enable ? "Enable" : "Disable"); | |
cf9b9f77 OD |
649 | |
650 | if (enable) { | |
651 | OspfEXT.enabled = true; | |
731271b0 | 652 | |
cf9b9f77 | 653 | /* Refresh LSAs if already engaged or originate */ |
731271b0 | 654 | for (ALL_LIST_ELEMENTS_RO(OspfEXT.iflist, node, exti)) { |
6f751f14 | 655 | /* Skip Inactive Extended Link */ |
731271b0 OD |
656 | if (!CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ACTIVE)) |
657 | continue; | |
658 | ||
6f751f14 OD |
659 | /* Update Extended Link (LAN)Adj-SID if not set */ |
660 | if (!CHECK_FLAG(exti->flags, EXT_LPFLG_FIB_ENTRY_SET)) | |
661 | ospf_ext_link_update_adj_sid(exti); | |
662 | ||
663 | /* Finally, flood the extended Link */ | |
cf9b9f77 OD |
664 | if (CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED)) |
665 | ospf_ext_lsa_schedule(exti, REFRESH_THIS_LSA); | |
666 | else | |
667 | ospf_ext_lsa_schedule(exti, | |
668 | REORIGINATE_THIS_LSA); | |
731271b0 | 669 | } |
cf9b9f77 | 670 | } else { |
21baf89a OD |
671 | /* Start by Removing Extended LSA */ |
672 | for (ALL_LIST_ELEMENTS_RO(OspfEXT.iflist, node, exti)) | |
673 | ospf_extended_lsa_delete(exti); | |
731271b0 | 674 | |
cf9b9f77 OD |
675 | /* And then disable Extended Link/Prefix */ |
676 | OspfEXT.enabled = false; | |
677 | } | |
678 | } | |
21baf89a | 679 | |
7743f2f8 OD |
680 | /* |
681 | * ----------------------------------------------------------------------- | |
682 | * Followings are callback functions against generic Opaque-LSAs handling | |
683 | * ----------------------------------------------------------------------- | |
684 | */ | |
cf9b9f77 OD |
685 | |
686 | /* Add new Interface in Extended Interface List */ | |
687 | static int ospf_ext_link_new_if(struct interface *ifp) | |
688 | { | |
689 | struct ext_itf *new; | |
690 | int rc = -1; | |
691 | ||
692 | if (lookup_ext_by_ifp(ifp) != NULL) { | |
cf9b9f77 OD |
693 | rc = 0; /* Do nothing here. */ |
694 | return rc; | |
695 | } | |
696 | ||
697 | new = XCALLOC(MTYPE_OSPF_EXT_PARAMS, sizeof(struct ext_itf)); | |
cf9b9f77 OD |
698 | |
699 | /* initialize new information and link back the interface */ | |
700 | new->ifp = ifp; | |
701 | new->flags = EXT_LPFLG_LSA_INACTIVE; | |
702 | ||
703 | listnode_add(OspfEXT.iflist, new); | |
704 | ||
705 | rc = 0; | |
706 | return rc; | |
707 | } | |
708 | ||
709 | /* Remove existing Interface from Extended Interface List */ | |
710 | static int ospf_ext_link_del_if(struct interface *ifp) | |
711 | { | |
712 | struct ext_itf *exti; | |
713 | int rc = -1; | |
714 | ||
7743f2f8 OD |
715 | exti = lookup_ext_by_ifp(ifp); |
716 | if (exti != NULL) { | |
21baf89a OD |
717 | /* Flush LSA and remove Adjacency SID */ |
718 | ospf_extended_lsa_delete(exti); | |
cf9b9f77 | 719 | |
cf9b9f77 | 720 | /* Dequeue listnode entry from the list. */ |
21baf89a | 721 | listnode_delete(OspfEXT.iflist, exti); |
cf9b9f77 | 722 | |
cf9b9f77 OD |
723 | XFREE(MTYPE_OSPF_EXT_PARAMS, exti); |
724 | ||
725 | rc = 0; | |
726 | } else { | |
cf444bcf | 727 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, |
89f60109 | 728 | "EXT (%s): interface %s is not found", __func__, |
996c9314 | 729 | ifp ? ifp->name : "-"); |
cf9b9f77 OD |
730 | } |
731 | ||
732 | return rc; | |
733 | } | |
734 | ||
7743f2f8 | 735 | /* |
731271b0 OD |
736 | * Determine if an Interface belongs to an Extended Link Adjacency or |
737 | * Extended Prefix SID type and allocate new instance value accordingly | |
cf9b9f77 | 738 | */ |
731271b0 | 739 | static void ospf_ext_ism_change(struct ospf_interface *oi, int old_status) |
cf9b9f77 OD |
740 | { |
741 | struct ext_itf *exti; | |
742 | ||
743 | /* Get interface information for Segment Routing */ | |
7743f2f8 OD |
744 | exti = lookup_ext_by_ifp(oi->ifp); |
745 | if (exti == NULL) { | |
cf444bcf | 746 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, |
89f60109 | 747 | "EXT (%s): Cannot get Extended info. from OI(%s)", |
996c9314 | 748 | __func__, IF_NAME(oi)); |
cf9b9f77 OD |
749 | return; |
750 | } | |
751 | ||
731271b0 OD |
752 | /* Reset Extended information if ospf interface goes Down */ |
753 | if (oi->state == ISM_Down) { | |
21baf89a | 754 | ospf_extended_lsa_delete(exti); |
731271b0 OD |
755 | exti->area = NULL; |
756 | exti->flags = EXT_LPFLG_LSA_INACTIVE; | |
757 | return; | |
758 | } | |
759 | ||
760 | /* Determine if interface is related to a Prefix or an Adjacency SID */ | |
cf9b9f77 OD |
761 | if (oi->type == OSPF_IFTYPE_LOOPBACK) { |
762 | exti->stype = PREF_SID; | |
db28a51f | 763 | exti->type = OPAQUE_TYPE_EXTENDED_PREFIX_LSA; |
731271b0 OD |
764 | exti->instance = get_ext_pref_instance_value(); |
765 | exti->area = oi->area; | |
7743f2f8 | 766 | |
7743f2f8 | 767 | /* Complete SRDB if the interface belongs to a Prefix */ |
a351b3e4 OD |
768 | if (OspfEXT.enabled) { |
769 | osr_debug("EXT (%s): Set Prefix SID to interface %s ", | |
770 | __func__, oi->ifp->name); | |
b37eb79c | 771 | ospf_sr_update_local_prefix(oi->ifp, oi->address); |
a351b3e4 | 772 | } |
731271b0 OD |
773 | } else { |
774 | /* Determine if interface is related to Adj. or LAN Adj. SID */ | |
775 | if (oi->state == ISM_DR) | |
776 | exti->stype = LAN_ADJ_SID; | |
777 | else | |
778 | exti->stype = ADJ_SID; | |
779 | ||
780 | exti->type = OPAQUE_TYPE_EXTENDED_LINK_LSA; | |
781 | exti->instance = get_ext_link_instance_value(); | |
782 | exti->area = oi->area; | |
783 | ||
784 | /* | |
785 | * Note: Adjacency SID information are completed when ospf | |
786 | * adjacency become up see ospf_ext_link_nsm_change() | |
787 | */ | |
a351b3e4 OD |
788 | if (OspfEXT.enabled) |
789 | osr_debug( | |
790 | "EXT (%s): Set %sAdjacency SID for interface %s ", | |
791 | __func__, exti->stype == ADJ_SID ? "" : "LAN-", | |
792 | oi->ifp->name); | |
cf9b9f77 | 793 | } |
cf9b9f77 OD |
794 | } |
795 | ||
796 | /* | |
797 | * Finish Extended Link configuration and flood corresponding LSA | |
798 | * when OSPF adjacency on this link fire up | |
799 | */ | |
800 | static void ospf_ext_link_nsm_change(struct ospf_neighbor *nbr, int old_status) | |
801 | { | |
802 | struct ospf_interface *oi = nbr->oi; | |
803 | struct ext_itf *exti; | |
cf9b9f77 | 804 | |
21baf89a OD |
805 | /* Process Link only when neighbor old or new state is NSM Full */ |
806 | if (nbr->state != NSM_Full && old_status != NSM_Full) | |
cf9b9f77 OD |
807 | return; |
808 | ||
809 | /* Get interface information for Segment Routing */ | |
7743f2f8 OD |
810 | exti = lookup_ext_by_ifp(oi->ifp); |
811 | if (exti == NULL) { | |
cf444bcf | 812 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, |
89f60109 | 813 | "EXT (%s): Cannot get Extended info. from OI(%s)", |
996c9314 | 814 | __func__, IF_NAME(oi)); |
cf9b9f77 OD |
815 | return; |
816 | } | |
817 | ||
21baf89a OD |
818 | /* Check that we have a valid area and ospf context */ |
819 | if (oi->area == NULL || oi->area->ospf == NULL) { | |
820 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, | |
821 | "EXT (%s): Cannot refer to OSPF from OI(%s)", | |
822 | __func__, IF_NAME(oi)); | |
823 | return; | |
824 | } | |
825 | ||
826 | /* Remove Extended Link if Neighbor State goes Down or Deleted */ | |
a351b3e4 OD |
827 | if (OspfEXT.enabled |
828 | && (nbr->state == NSM_Down || nbr->state == NSM_Deleted)) { | |
6f751f14 OD |
829 | ospf_ext_link_delete_adj_sid(exti); |
830 | if (CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED)) | |
831 | ospf_ext_link_lsa_schedule(exti, FLUSH_THIS_LSA); | |
832 | exti->flags = EXT_LPFLG_LSA_INACTIVE; | |
21baf89a OD |
833 | return; |
834 | } | |
835 | ||
836 | /* Keep Area information in combination with SR info. */ | |
837 | exti->area = oi->area; | |
838 | ||
cf9b9f77 OD |
839 | /* Process only Adjacency/LAN SID */ |
840 | if (exti->stype == PREF_SID) | |
841 | return; | |
842 | ||
843 | switch (oi->state) { | |
844 | case ISM_PointToPoint: | |
845 | /* Segment ID is an Adjacency one */ | |
846 | exti->stype = ADJ_SID; | |
847 | ||
848 | /* Set Extended Link TLV with link_id == Nbr Router ID */ | |
849 | set_ext_link(exti, OSPF_IFTYPE_POINTOPOINT, nbr->router_id, | |
850 | oi->address->u.prefix4); | |
851 | ||
cf9b9f77 OD |
852 | /* And Remote Interface address */ |
853 | set_rmt_itf_addr(exti, nbr->address.u.prefix4); | |
854 | ||
855 | break; | |
856 | ||
857 | case ISM_DR: | |
858 | /* Segment ID is a LAN Adjacency for the DR only */ | |
859 | exti->stype = LAN_ADJ_SID; | |
860 | ||
861 | /* Set Extended Link TLV with link_id == DR */ | |
862 | set_ext_link(exti, OSPF_IFTYPE_BROADCAST, DR(oi), | |
863 | oi->address->u.prefix4); | |
864 | ||
6f751f14 OD |
865 | /* Set Neighbor ID */ |
866 | exti->lan_sid[0].neighbor_id = nbr->router_id; | |
867 | exti->lan_sid[1].neighbor_id = nbr->router_id; | |
cf9b9f77 OD |
868 | |
869 | break; | |
870 | ||
871 | case ISM_DROther: | |
872 | case ISM_Backup: | |
873 | /* Segment ID is an Adjacency if not the DR */ | |
874 | exti->stype = ADJ_SID; | |
875 | ||
876 | /* Set Extended Link TLV with link_id == DR */ | |
877 | set_ext_link(exti, OSPF_IFTYPE_BROADCAST, DR(oi), | |
878 | oi->address->u.prefix4); | |
879 | ||
cf9b9f77 OD |
880 | break; |
881 | ||
882 | default: | |
6f751f14 OD |
883 | if (CHECK_FLAG(exti->flags, EXT_LPFLG_FIB_ENTRY_SET)) |
884 | ospf_ext_link_delete_adj_sid(exti); | |
731271b0 | 885 | if (CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED)) |
cf9b9f77 | 886 | ospf_ext_link_lsa_schedule(exti, FLUSH_THIS_LSA); |
731271b0 | 887 | exti->flags = EXT_LPFLG_LSA_INACTIVE; |
cf9b9f77 OD |
888 | return; |
889 | } | |
890 | ||
cf9b9f77 | 891 | SET_FLAG(exti->flags, EXT_LPFLG_LSA_ACTIVE); |
6f751f14 | 892 | |
cf9b9f77 | 893 | if (OspfEXT.enabled) { |
6f751f14 OD |
894 | osr_debug("EXT (%s): Set %sAdjacency SID for interface %s ", |
895 | __func__, exti->stype == ADJ_SID ? "" : "LAN-", | |
896 | oi->ifp->name); | |
897 | ||
898 | /* Update (LAN)Adjacency SID */ | |
899 | ospf_ext_link_update_adj_sid(exti); | |
900 | ||
901 | /* flood this links params if everything is ok */ | |
cf9b9f77 OD |
902 | if (CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED)) |
903 | ospf_ext_link_lsa_schedule(exti, REFRESH_THIS_LSA); | |
904 | else | |
905 | ospf_ext_link_lsa_schedule(exti, REORIGINATE_THIS_LSA); | |
906 | } | |
cf9b9f77 OD |
907 | } |
908 | ||
909 | /* Callbacks to handle Extended Link Segment Routing LSA information */ | |
910 | static int ospf_ext_link_lsa_update(struct ospf_lsa *lsa) | |
911 | { | |
912 | /* Sanity Check */ | |
913 | if (lsa == NULL) { | |
cf444bcf | 914 | flog_warn(EC_OSPF_LSA_NULL, "EXT (%s): Abort! LSA is NULL", |
ade6974d | 915 | __func__); |
cf9b9f77 OD |
916 | return -1; |
917 | } | |
918 | ||
6aaf0fdd OD |
919 | /* Process only Opaque LSA */ |
920 | if ((lsa->data->type != OSPF_OPAQUE_AREA_LSA) | |
921 | && (lsa->data->type != OSPF_OPAQUE_AS_LSA)) | |
922 | return 0; | |
923 | ||
cf9b9f77 OD |
924 | /* Process only Extended Link LSA */ |
925 | if (GET_OPAQUE_TYPE(ntohl(lsa->data->id.s_addr)) | |
926 | != OPAQUE_TYPE_EXTENDED_LINK_LSA) | |
927 | return 0; | |
928 | ||
21baf89a OD |
929 | /* Check if it is not my LSA */ |
930 | if (IS_LSA_SELF(lsa)) | |
931 | return 0; | |
932 | ||
cf9b9f77 OD |
933 | /* Check if Extended is enable */ |
934 | if (!OspfEXT.enabled) | |
935 | return 0; | |
936 | ||
937 | /* Call Segment Routing LSA update or deletion */ | |
938 | if (!IS_LSA_MAXAGE(lsa)) | |
939 | ospf_sr_ext_link_lsa_update(lsa); | |
940 | else | |
941 | ospf_sr_ext_link_lsa_delete(lsa); | |
942 | ||
943 | return 0; | |
944 | } | |
945 | ||
946 | /* Callbacks to handle Extended Prefix Segment Routing LSA information */ | |
947 | static int ospf_ext_pref_lsa_update(struct ospf_lsa *lsa) | |
948 | { | |
949 | ||
950 | /* Sanity Check */ | |
951 | if (lsa == NULL) { | |
cf444bcf | 952 | flog_warn(EC_OSPF_LSA_NULL, "EXT (%s): Abort! LSA is NULL", |
ade6974d | 953 | __func__); |
cf9b9f77 OD |
954 | return -1; |
955 | } | |
956 | ||
6aaf0fdd OD |
957 | /* Process only Opaque LSA */ |
958 | if ((lsa->data->type != OSPF_OPAQUE_AREA_LSA) | |
959 | && (lsa->data->type != OSPF_OPAQUE_AS_LSA)) | |
7743f2f8 OD |
960 | return 0; |
961 | ||
cf9b9f77 OD |
962 | /* Process only Extended Prefix LSA */ |
963 | if (GET_OPAQUE_TYPE(ntohl(lsa->data->id.s_addr)) | |
964 | != OPAQUE_TYPE_EXTENDED_PREFIX_LSA) | |
965 | return 0; | |
966 | ||
6aaf0fdd OD |
967 | /* Check if it is not my LSA */ |
968 | if (IS_LSA_SELF(lsa)) | |
969 | return 0; | |
970 | ||
cf9b9f77 OD |
971 | /* Check if Extended is enable */ |
972 | if (!OspfEXT.enabled) | |
973 | return 0; | |
974 | ||
975 | /* Call Segment Routing LSA update or deletion */ | |
976 | if (!IS_LSA_MAXAGE(lsa)) | |
977 | ospf_sr_ext_prefix_lsa_update(lsa); | |
978 | else | |
979 | ospf_sr_ext_prefix_lsa_delete(lsa); | |
980 | ||
981 | return 0; | |
982 | } | |
983 | ||
7743f2f8 OD |
984 | /* |
985 | * ------------------------------------------------------- | |
cf9b9f77 OD |
986 | * Followings are OSPF protocol processing functions for |
987 | * Extended Prefix/Link Opaque LSA | |
7743f2f8 OD |
988 | * ------------------------------------------------------- |
989 | */ | |
cf9b9f77 OD |
990 | |
991 | static void build_tlv_header(struct stream *s, struct tlv_header *tlvh) | |
992 | { | |
993 | stream_put(s, tlvh, sizeof(struct tlv_header)); | |
cf9b9f77 OD |
994 | } |
995 | ||
996 | static void build_tlv(struct stream *s, struct tlv_header *tlvh) | |
997 | { | |
998 | ||
999 | if ((tlvh != NULL) && (ntohs(tlvh->type) != 0)) { | |
1000 | build_tlv_header(s, tlvh); | |
1001 | stream_put(s, TLV_DATA(tlvh), TLV_BODY_SIZE(tlvh)); | |
1002 | } | |
cf9b9f77 OD |
1003 | } |
1004 | ||
1005 | /* Build an Extended Prefix Opaque LSA body for extended prefix TLV */ | |
1006 | static void ospf_ext_pref_lsa_body_set(struct stream *s, struct ext_itf *exti) | |
1007 | { | |
1008 | ||
1009 | /* Sanity check */ | |
1010 | if ((exti == NULL) || (exti->stype != PREF_SID)) | |
1011 | return; | |
1012 | ||
1013 | /* Adjust Extended Prefix TLV size */ | |
996c9314 LB |
1014 | TLV_LEN(exti->prefix) = htons(ntohs(TLV_LEN(exti->node_sid)) |
1015 | + EXT_TLV_PREFIX_SIZE + TLV_HDR_SIZE); | |
cf9b9f77 OD |
1016 | |
1017 | /* Build LSA body for an Extended Prefix TLV */ | |
1018 | build_tlv_header(s, &exti->prefix.header); | |
1019 | stream_put(s, TLV_DATA(&exti->prefix.header), EXT_TLV_PREFIX_SIZE); | |
1020 | /* Then add Prefix SID SubTLV */ | |
1021 | build_tlv(s, &exti->node_sid.header); | |
cf9b9f77 OD |
1022 | } |
1023 | ||
1024 | /* Build an Extended Link Opaque LSA body for extended link TLV */ | |
1025 | static void ospf_ext_link_lsa_body_set(struct stream *s, struct ext_itf *exti) | |
1026 | { | |
7743f2f8 | 1027 | size_t size; |
cf9b9f77 OD |
1028 | |
1029 | /* Sanity check */ | |
1030 | if ((exti == NULL) | |
1031 | || ((exti->stype != ADJ_SID) && (exti->stype != LAN_ADJ_SID))) | |
1032 | return; | |
1033 | ||
1034 | if (exti->stype == ADJ_SID) { | |
1035 | /* Adjust Extended Link TLV size for Adj. SID */ | |
7743f2f8 | 1036 | size = EXT_TLV_LINK_SIZE + 2 * EXT_SUBTLV_ADJ_SID_SIZE |
996c9314 | 1037 | + 2 * TLV_HDR_SIZE; |
7743f2f8 OD |
1038 | if (ntohs(TLV_TYPE(exti->rmt_itf_addr)) != 0) |
1039 | size = size + EXT_SUBTLV_RMT_ITF_ADDR_SIZE | |
996c9314 | 1040 | + TLV_HDR_SIZE; |
7743f2f8 | 1041 | TLV_LEN(exti->link) = htons(size); |
cf9b9f77 OD |
1042 | |
1043 | /* Build LSA body for an Extended Link TLV with Adj. SID */ | |
1044 | build_tlv_header(s, &exti->link.header); | |
1045 | stream_put(s, TLV_DATA(&exti->link.header), EXT_TLV_LINK_SIZE); | |
d922605d | 1046 | /* then add Adjacency SubTLVs */ |
cf9b9f77 OD |
1047 | build_tlv(s, &exti->adj_sid[1].header); |
1048 | build_tlv(s, &exti->adj_sid[0].header); | |
7743f2f8 OD |
1049 | |
1050 | /* Add Cisco experimental SubTLV if interface is PtoP */ | |
1051 | if (ntohs(TLV_TYPE(exti->rmt_itf_addr)) != 0) | |
1052 | build_tlv(s, &exti->rmt_itf_addr.header); | |
cf9b9f77 OD |
1053 | } else { |
1054 | /* Adjust Extended Link TLV size for LAN SID */ | |
7743f2f8 | 1055 | size = EXT_TLV_LINK_SIZE |
996c9314 | 1056 | + 2 * (EXT_SUBTLV_LAN_ADJ_SID_SIZE + TLV_HDR_SIZE); |
7743f2f8 | 1057 | TLV_LEN(exti->link) = htons(size); |
cf9b9f77 OD |
1058 | |
1059 | /* Build LSA body for an Extended Link TLV with LAN SID */ | |
1060 | build_tlv_header(s, &exti->link.header); | |
d922605d OD |
1061 | stream_put(s, TLV_DATA(&exti->link.header), EXT_TLV_LINK_SIZE); |
1062 | /* then add LAN-Adjacency SubTLVs */ | |
cf9b9f77 OD |
1063 | build_tlv(s, &exti->lan_sid[1].header); |
1064 | build_tlv(s, &exti->lan_sid[0].header); | |
1065 | } | |
cf9b9f77 OD |
1066 | } |
1067 | ||
1068 | /* Create new Extended Prefix opaque-LSA for every extended prefix */ | |
1069 | static struct ospf_lsa *ospf_ext_pref_lsa_new(struct ospf_area *area, | |
1070 | struct ext_itf *exti) | |
1071 | { | |
1072 | struct stream *s; | |
1073 | struct lsa_header *lsah; | |
1074 | struct ospf_lsa *new = NULL; | |
7743f2f8 | 1075 | struct ospf *top; |
d7c0a89a | 1076 | uint8_t options, lsa_type; |
cf9b9f77 OD |
1077 | struct in_addr lsa_id; |
1078 | struct in_addr router_id; | |
93f0a26e OD |
1079 | uint32_t tmp; |
1080 | uint16_t length; | |
cf9b9f77 | 1081 | |
fd3b19f2 OD |
1082 | /* Sanity Check */ |
1083 | if (exti == NULL) | |
1084 | return NULL; | |
1085 | ||
cf9b9f77 | 1086 | /* Create a stream for LSA. */ |
7743f2f8 | 1087 | s = stream_new(OSPF_MAX_LSA_SIZE); |
cf9b9f77 OD |
1088 | |
1089 | /* Prepare LSA Header */ | |
1090 | lsah = (struct lsa_header *)STREAM_DATA(s); | |
1091 | ||
1092 | lsa_type = OspfEXT.scope; | |
1093 | ||
7743f2f8 OD |
1094 | /* |
1095 | * LSA ID is a variable number identifying different instances of | |
1096 | * Extended Prefix Opaque LSA from the same router see RFC 7684 | |
1097 | */ | |
cf9b9f77 OD |
1098 | tmp = SET_OPAQUE_LSID(OPAQUE_TYPE_EXTENDED_PREFIX_LSA, exti->instance); |
1099 | lsa_id.s_addr = htonl(tmp); | |
1100 | ||
1101 | options = OSPF_OPTION_O; /* Don't forget this :-) */ | |
1102 | ||
1103 | /* Fix Options and Router ID depending of the flooding scope */ | |
1104 | if ((OspfEXT.scope == OSPF_OPAQUE_AS_LSA) || (area == NULL)) { | |
1105 | options = OSPF_OPTION_E; | |
7743f2f8 OD |
1106 | top = ospf_lookup_by_vrf_id(VRF_DEFAULT); |
1107 | router_id.s_addr = top ? top->router_id.s_addr : 0; | |
cf9b9f77 OD |
1108 | } else { |
1109 | options |= LSA_OPTIONS_GET(area); /* Get area default option */ | |
1110 | options |= LSA_OPTIONS_NSSA_GET(area); | |
1111 | router_id = area->ospf->router_id; | |
1112 | } | |
1113 | ||
1114 | /* Set opaque-LSA header fields. */ | |
1115 | lsa_header_set(s, options, lsa_type, lsa_id, router_id); | |
1116 | ||
b37eb79c | 1117 | osr_debug( |
3efd0893 | 1118 | "EXT (%s): LSA[Type%u:%pI4]: Create an Opaque-LSA Extended Prefix Opaque LSA instance", |
b37eb79c | 1119 | __func__, lsa_type, &lsa_id); |
cf9b9f77 OD |
1120 | |
1121 | /* Set opaque-LSA body fields. */ | |
1122 | ospf_ext_pref_lsa_body_set(s, exti); | |
1123 | ||
1124 | /* Set length. */ | |
1125 | length = stream_get_endp(s); | |
1126 | lsah->length = htons(length); | |
1127 | ||
1128 | /* Now, create an OSPF LSA instance. */ | |
5b3d4186 | 1129 | new = ospf_lsa_new_and_data(length); |
cf9b9f77 | 1130 | |
7743f2f8 OD |
1131 | /* Segment Routing belongs only to default VRF */ |
1132 | new->vrf_id = VRF_DEFAULT; | |
cf9b9f77 OD |
1133 | new->area = area; |
1134 | SET_FLAG(new->flags, OSPF_LSA_SELF); | |
1135 | memcpy(new->data, lsah, length); | |
1136 | stream_free(s); | |
1137 | ||
1138 | return new; | |
1139 | } | |
1140 | ||
1141 | /* Create new Extended Link opaque-LSA for every extended link TLV */ | |
1142 | static struct ospf_lsa *ospf_ext_link_lsa_new(struct ospf_area *area, | |
1143 | struct ext_itf *exti) | |
1144 | { | |
1145 | struct stream *s; | |
1146 | struct lsa_header *lsah; | |
1147 | struct ospf_lsa *new = NULL; | |
d7c0a89a | 1148 | uint8_t options, lsa_type; |
cf9b9f77 | 1149 | struct in_addr lsa_id; |
93f0a26e OD |
1150 | uint32_t tmp; |
1151 | uint16_t length; | |
cf9b9f77 | 1152 | |
fd3b19f2 OD |
1153 | /* Sanity Check */ |
1154 | if (exti == NULL) | |
1155 | return NULL; | |
1156 | ||
cf9b9f77 | 1157 | /* Create a stream for LSA. */ |
7743f2f8 | 1158 | s = stream_new(OSPF_MAX_LSA_SIZE); |
cf9b9f77 OD |
1159 | lsah = (struct lsa_header *)STREAM_DATA(s); |
1160 | ||
1161 | options = OSPF_OPTION_O; /* Don't forget this :-) */ | |
1162 | options |= LSA_OPTIONS_GET(area); /* Get area default option */ | |
1163 | options |= LSA_OPTIONS_NSSA_GET(area); | |
1164 | /* Extended Link Opaque LSA are only flooded within an area */ | |
1165 | lsa_type = OSPF_OPAQUE_AREA_LSA; | |
1166 | ||
7743f2f8 OD |
1167 | /* |
1168 | * LSA ID is a variable number identifying different instances of | |
1169 | * Extended Link Opaque LSA from the same router see RFC 7684 | |
1170 | */ | |
cf9b9f77 OD |
1171 | tmp = SET_OPAQUE_LSID(OPAQUE_TYPE_EXTENDED_LINK_LSA, exti->instance); |
1172 | lsa_id.s_addr = htonl(tmp); | |
1173 | ||
b37eb79c | 1174 | osr_debug( |
3efd0893 | 1175 | "EXT (%s) LSA[Type%u:%pI4]: Create an Opaque-LSA Extended Link Opaque LSA instance", |
b37eb79c | 1176 | __func__, lsa_type, &lsa_id); |
cf9b9f77 OD |
1177 | |
1178 | /* Set opaque-LSA header fields. */ | |
1179 | lsa_header_set(s, options, lsa_type, lsa_id, area->ospf->router_id); | |
1180 | ||
1181 | /* Set opaque-LSA body fields. */ | |
1182 | ospf_ext_link_lsa_body_set(s, exti); | |
1183 | ||
1184 | /* Set length. */ | |
1185 | length = stream_get_endp(s); | |
1186 | lsah->length = htons(length); | |
1187 | ||
1188 | /* Now, create an OSPF LSA instance. */ | |
5b3d4186 | 1189 | new = ospf_lsa_new_and_data(length); |
cf9b9f77 | 1190 | |
7743f2f8 OD |
1191 | /* Segment Routing belongs only to default VRF */ |
1192 | new->vrf_id = VRF_DEFAULT; | |
cf9b9f77 OD |
1193 | new->area = area; |
1194 | SET_FLAG(new->flags, OSPF_LSA_SELF); | |
1195 | memcpy(new->data, lsah, length); | |
1196 | stream_free(s); | |
1197 | ||
1198 | return new; | |
1199 | } | |
1200 | ||
7743f2f8 OD |
1201 | /* |
1202 | * Process the origination of an Extended Prefix Opaque LSA | |
1203 | * for every extended prefix TLV | |
1204 | */ | |
cf9b9f77 OD |
1205 | static int ospf_ext_pref_lsa_originate1(struct ospf_area *area, |
1206 | struct ext_itf *exti) | |
1207 | { | |
1208 | struct ospf_lsa *new; | |
1209 | int rc = -1; | |
1210 | ||
1211 | ||
1212 | /* Create new Opaque-LSA/Extended Prefix Opaque LSA instance. */ | |
7743f2f8 OD |
1213 | new = ospf_ext_pref_lsa_new(area, exti); |
1214 | if (new == NULL) { | |
cf444bcf | 1215 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, |
89f60109 | 1216 | "EXT (%s): ospf_ext_pref_lsa_new() error", __func__); |
cf9b9f77 OD |
1217 | return rc; |
1218 | } | |
1219 | ||
1220 | /* Install this LSA into LSDB. */ | |
1221 | if (ospf_lsa_install(area->ospf, NULL /*oi */, new) == NULL) { | |
cf444bcf | 1222 | flog_warn(EC_OSPF_LSA_INSTALL_FAILURE, |
542a208f | 1223 | "EXT (%s): ospf_lsa_install() error", __func__); |
cf9b9f77 OD |
1224 | ospf_lsa_unlock(&new); |
1225 | return rc; | |
1226 | } | |
1227 | ||
1228 | /* Now this Extended Prefix Opaque LSA info parameter entry has | |
7743f2f8 OD |
1229 | * associated LSA. |
1230 | */ | |
cf9b9f77 OD |
1231 | SET_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED); |
1232 | ||
1233 | /* Update new LSA origination count. */ | |
1234 | area->ospf->lsa_originate_count++; | |
1235 | ||
1236 | /* Flood new LSA through area. */ | |
1237 | ospf_flood_through_area(area, NULL /*nbr */, new); | |
1238 | ||
b37eb79c | 1239 | osr_debug( |
3efd0893 | 1240 | "EXT (%s): LSA[Type%u:%pI4]: Originate Opaque-LSAExtended Prefix Opaque LSA: Area(%pI4), Link(%s)", |
b37eb79c OD |
1241 | __func__, new->data->type, &new->data->id, |
1242 | &area->area_id, exti->ifp->name); | |
1243 | if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) | |
cf9b9f77 | 1244 | ospf_lsa_header_dump(new->data); |
cf9b9f77 OD |
1245 | |
1246 | rc = 0; | |
1247 | ||
1248 | return rc; | |
1249 | } | |
1250 | ||
7743f2f8 OD |
1251 | /* |
1252 | * Process the origination of an Extended Link Opaque LSA | |
1253 | * for every extended link TLV | |
1254 | */ | |
cf9b9f77 OD |
1255 | static int ospf_ext_link_lsa_originate1(struct ospf_area *area, |
1256 | struct ext_itf *exti) | |
1257 | { | |
1258 | struct ospf_lsa *new; | |
1259 | int rc = -1; | |
1260 | ||
1261 | /* Create new Opaque-LSA/Extended Link Opaque LSA instance. */ | |
7743f2f8 OD |
1262 | new = ospf_ext_link_lsa_new(area, exti); |
1263 | if (new == NULL) { | |
cf444bcf | 1264 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, |
89f60109 | 1265 | "EXT (%s): ospf_ext_link_lsa_new() error", __func__); |
cf9b9f77 OD |
1266 | return rc; |
1267 | } | |
1268 | ||
1269 | /* Install this LSA into LSDB. */ | |
1270 | if (ospf_lsa_install(area->ospf, NULL /*oi */, new) == NULL) { | |
cf444bcf | 1271 | flog_warn(EC_OSPF_LSA_INSTALL_FAILURE, |
542a208f | 1272 | "EXT (%s): ospf_lsa_install() error", __func__); |
cf9b9f77 OD |
1273 | ospf_lsa_unlock(&new); |
1274 | return rc; | |
1275 | } | |
1276 | ||
1277 | /* Now this link-parameter entry has associated LSA. */ | |
1278 | SET_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED); | |
1279 | ||
1280 | /* Update new LSA origination count. */ | |
1281 | area->ospf->lsa_originate_count++; | |
1282 | ||
1283 | /* Flood new LSA through area. */ | |
1284 | ospf_flood_through_area(area, NULL /*nbr */, new); | |
1285 | ||
b37eb79c | 1286 | osr_debug( |
3efd0893 | 1287 | "EXT (%s): LSA[Type%u:%pI4]: Originate Opaque-LSA Extended Link Opaque LSA: Area(%pI4), Link(%s)", |
b37eb79c OD |
1288 | __func__, new->data->type, &new->data->id, |
1289 | &area->area_id, exti->ifp->name); | |
1290 | if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) | |
cf9b9f77 | 1291 | ospf_lsa_header_dump(new->data); |
cf9b9f77 OD |
1292 | |
1293 | rc = 0; | |
1294 | ||
1295 | return rc; | |
1296 | } | |
1297 | ||
1298 | /* Trigger the origination of Extended Prefix Opaque LSAs */ | |
1299 | static int ospf_ext_pref_lsa_originate(void *arg) | |
1300 | { | |
1301 | struct ospf_area *area = (struct ospf_area *)arg; | |
1302 | struct listnode *node; | |
1303 | struct ext_itf *exti; | |
1304 | int rc = -1; | |
1305 | ||
1306 | if (!OspfEXT.enabled) { | |
1307 | zlog_info( | |
b37eb79c | 1308 | "EXT (%s): Segment Routing functionality is Disabled now", |
996c9314 | 1309 | __func__); |
cf9b9f77 OD |
1310 | rc = 0; /* This is not an error case. */ |
1311 | return rc; | |
1312 | } | |
b37eb79c OD |
1313 | osr_debug("EXT (%s): Start Originate Prefix LSA for area %pI4", |
1314 | __func__, &area->area_id); | |
cf9b9f77 OD |
1315 | |
1316 | /* Check if Extended Prefix Opaque LSA is already engaged */ | |
1317 | for (ALL_LIST_ELEMENTS_RO(OspfEXT.iflist, node, exti)) { | |
1318 | ||
1319 | /* Process only Prefix SID */ | |
1320 | if (exti->stype != PREF_SID) | |
1321 | continue; | |
1322 | ||
1323 | /* Process only Extended Prefix with valid Area ID */ | |
1324 | if ((exti->area == NULL) | |
1325 | || (!IPV4_ADDR_SAME(&exti->area->area_id, &area->area_id))) | |
1326 | continue; | |
1327 | ||
1328 | if (CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED)) { | |
1329 | if (CHECK_FLAG(exti->flags, | |
1330 | EXT_LPFLG_LSA_FORCED_REFRESH)) { | |
ade6974d | 1331 | flog_warn( |
cf444bcf | 1332 | EC_OSPF_EXT_LSA_UNEXPECTED, |
ade6974d | 1333 | "EXT (%s): Refresh instead of Originate", |
996c9314 | 1334 | __func__); |
cf9b9f77 OD |
1335 | UNSET_FLAG(exti->flags, |
1336 | EXT_LPFLG_LSA_FORCED_REFRESH); | |
1337 | ospf_ext_pref_lsa_schedule(exti, | |
1338 | REFRESH_THIS_LSA); | |
1339 | } | |
1340 | continue; | |
1341 | } | |
1342 | ||
1343 | /* Ok, let's try to originate an LSA */ | |
b37eb79c | 1344 | osr_debug( |
3efd0893 | 1345 | "EXT (%s): Let's finally re-originate the LSA 7.0.0.%u for Itf %s", __func__, exti->instance, |
b37eb79c | 1346 | exti->ifp ? exti->ifp->name : ""); |
cf9b9f77 OD |
1347 | ospf_ext_pref_lsa_originate1(area, exti); |
1348 | } | |
1349 | ||
1350 | rc = 0; | |
1351 | return rc; | |
1352 | } | |
1353 | ||
1354 | /* Trigger the origination of Extended Link Opaque LSAs */ | |
1355 | static int ospf_ext_link_lsa_originate(void *arg) | |
1356 | { | |
1357 | struct ospf_area *area = (struct ospf_area *)arg; | |
1358 | struct listnode *node; | |
1359 | struct ext_itf *exti; | |
1360 | int rc = -1; | |
1361 | ||
1362 | if (!OspfEXT.enabled) { | |
1363 | zlog_info( | |
b37eb79c | 1364 | "EXT (%s): Segment Routing functionality is Disabled now", |
996c9314 | 1365 | __func__); |
cf9b9f77 OD |
1366 | rc = 0; /* This is not an error case. */ |
1367 | return rc; | |
1368 | } | |
1369 | ||
1370 | /* Check if Extended Prefix Opaque LSA is already engaged */ | |
1371 | for (ALL_LIST_ELEMENTS_RO(OspfEXT.iflist, node, exti)) { | |
1372 | /* Process only Adjacency or LAN SID */ | |
1373 | if (exti->stype == PREF_SID) | |
1374 | continue; | |
1375 | ||
21baf89a OD |
1376 | /* Skip Inactive Extended Link */ |
1377 | if (!CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ACTIVE)) | |
1378 | continue; | |
1379 | ||
cf9b9f77 OD |
1380 | /* Process only Extended Link with valid Area ID */ |
1381 | if ((exti->area == NULL) | |
1382 | || (!IPV4_ADDR_SAME(&exti->area->area_id, &area->area_id))) | |
1383 | continue; | |
1384 | ||
1385 | /* Check if LSA not already engaged */ | |
1386 | if (CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED)) { | |
1387 | if (CHECK_FLAG(exti->flags, | |
1388 | EXT_LPFLG_LSA_FORCED_REFRESH)) { | |
ade6974d | 1389 | flog_warn( |
cf444bcf | 1390 | EC_OSPF_EXT_LSA_UNEXPECTED, |
ade6974d QY |
1391 | "EXT (%s): Refresh instead of Originate", |
1392 | __func__); | |
cf9b9f77 OD |
1393 | UNSET_FLAG(exti->flags, |
1394 | EXT_LPFLG_LSA_FORCED_REFRESH); | |
1395 | ospf_ext_link_lsa_schedule(exti, | |
1396 | REFRESH_THIS_LSA); | |
1397 | } | |
1398 | continue; | |
1399 | } | |
1400 | ||
1401 | /* Ok, let's try to originate an LSA */ | |
b37eb79c | 1402 | osr_debug( |
3efd0893 | 1403 | "EXT (%s): Let's finally reoriginate the LSA 8.0.0.%u for Itf %s through the Area %pI4", __func__, |
b37eb79c OD |
1404 | exti->instance, exti->ifp ? exti->ifp->name : "-", |
1405 | &area->area_id); | |
cf9b9f77 OD |
1406 | ospf_ext_link_lsa_originate1(area, exti); |
1407 | } | |
1408 | ||
1409 | rc = 0; | |
1410 | return rc; | |
1411 | } | |
1412 | ||
1413 | /* Refresh an Extended Prefix Opaque LSA */ | |
1414 | static struct ospf_lsa *ospf_ext_pref_lsa_refresh(struct ospf_lsa *lsa) | |
1415 | { | |
1416 | struct ospf_lsa *new = NULL; | |
1417 | struct ospf_area *area = lsa->area; | |
1418 | struct ospf *top; | |
1419 | struct ext_itf *exti; | |
1420 | ||
1421 | if (!OspfEXT.enabled) { | |
1422 | /* | |
1423 | * This LSA must have flushed before due to Extended Prefix | |
1424 | * Opaque LSA status change. | |
1425 | * It seems a slip among routers in the routing domain. | |
1426 | */ | |
7743f2f8 | 1427 | zlog_info( |
b37eb79c | 1428 | "EXT (%s): Segment Routing functionality is Disabled", |
996c9314 | 1429 | __func__); |
cf9b9f77 OD |
1430 | /* Flush it anyway. */ |
1431 | lsa->data->ls_age = htons(OSPF_LSA_MAXAGE); | |
1432 | } | |
1433 | ||
1434 | /* Lookup this lsa corresponding Extended parameters */ | |
7743f2f8 OD |
1435 | exti = lookup_ext_by_instance(lsa); |
1436 | if (exti == NULL) { | |
cf444bcf | 1437 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, |
89f60109 | 1438 | "EXT (%s): Invalid parameter LSA ID", __func__); |
cf9b9f77 OD |
1439 | /* Flush it anyway. */ |
1440 | lsa->data->ls_age = htons(OSPF_LSA_MAXAGE); | |
1441 | } | |
1442 | ||
1443 | /* Check if Interface was not disable in the interval */ | |
1444 | if ((exti != NULL) && !CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ACTIVE)) { | |
cf444bcf | 1445 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, |
89f60109 | 1446 | "EXT (%s): Interface was Disabled: Flush it!", |
996c9314 | 1447 | __func__); |
cf9b9f77 OD |
1448 | /* Flush it anyway. */ |
1449 | lsa->data->ls_age = htons(OSPF_LSA_MAXAGE); | |
1450 | } | |
1451 | ||
1452 | /* If the lsa's age reached to MaxAge, start flushing procedure. */ | |
1453 | if (IS_LSA_MAXAGE(lsa)) { | |
1454 | if (exti) | |
1455 | UNSET_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED); | |
1456 | ospf_opaque_lsa_flush_schedule(lsa); | |
1457 | return NULL; | |
1458 | } | |
1459 | ||
1460 | /* Create new Opaque-LSA/Extended Prefix Opaque LSA instance. */ | |
db28a51f | 1461 | new = ospf_ext_pref_lsa_new(area, exti); |
cf9b9f77 OD |
1462 | |
1463 | if (new == NULL) { | |
cf444bcf | 1464 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, |
89f60109 | 1465 | "EXT (%s): ospf_ext_pref_lsa_new() error", __func__); |
cf9b9f77 OD |
1466 | return NULL; |
1467 | } | |
1468 | new->data->ls_seqnum = lsa_seqnum_increment(lsa); | |
1469 | ||
7743f2f8 OD |
1470 | /* |
1471 | * Install this LSA into LSDB | |
1472 | * Given "lsa" will be freed in the next function | |
1473 | * As area could be NULL i.e. when using OPAQUE_LSA_AS, we prefer to use | |
1474 | * ospf_lookup() to get ospf instance | |
1475 | */ | |
cf9b9f77 OD |
1476 | if (area) |
1477 | top = area->ospf; | |
1478 | else | |
1479 | top = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1480 | ||
1481 | if (ospf_lsa_install(top, NULL /*oi */, new) == NULL) { | |
cf444bcf | 1482 | flog_warn(EC_OSPF_LSA_INSTALL_FAILURE, |
542a208f | 1483 | "EXT (%s): ospf_lsa_install() error", __func__); |
cf9b9f77 OD |
1484 | ospf_lsa_unlock(&new); |
1485 | return NULL; | |
1486 | } | |
1487 | ||
1488 | /* Flood updated LSA through the Prefix Area according to the RFC7684 */ | |
1489 | ospf_flood_through_area(area, NULL /*nbr */, new); | |
1490 | ||
1491 | /* Debug logging. */ | |
b37eb79c OD |
1492 | osr_debug("EXT (%s): LSA[Type%u:%pI4] Refresh Extended Prefix LSA", |
1493 | __func__, new->data->type, &new->data->id); | |
1494 | if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) | |
cf9b9f77 | 1495 | ospf_lsa_header_dump(new->data); |
b37eb79c | 1496 | |
cf9b9f77 OD |
1497 | |
1498 | return new; | |
1499 | } | |
1500 | ||
1501 | /* Refresh an Extended Link Opaque LSA */ | |
1502 | static struct ospf_lsa *ospf_ext_link_lsa_refresh(struct ospf_lsa *lsa) | |
1503 | { | |
1504 | struct ext_itf *exti; | |
1505 | struct ospf_area *area = lsa->area; | |
1506 | struct ospf *top = area->ospf; | |
1507 | struct ospf_lsa *new = NULL; | |
1508 | ||
1509 | if (!OspfEXT.enabled) { | |
1510 | /* | |
1511 | * This LSA must have flushed before due to OSPF-SR status | |
1512 | * change. It seems a slip among routers in the routing domain. | |
1513 | */ | |
996c9314 LB |
1514 | zlog_info("EXT (%s): Segment Routing functionality is Disabled", |
1515 | __func__); | |
cf9b9f77 OD |
1516 | /* Flush it anyway. */ |
1517 | lsa->data->ls_age = htons(OSPF_LSA_MAXAGE); | |
1518 | } | |
1519 | ||
7743f2f8 OD |
1520 | /* Lookup this LSA corresponding Extended parameters */ |
1521 | exti = lookup_ext_by_instance(lsa); | |
1522 | if (exti == NULL) { | |
cf444bcf | 1523 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, |
89f60109 | 1524 | "EXT (%s): Invalid parameter LSA ID", __func__); |
cf9b9f77 OD |
1525 | /* Flush it anyway. */ |
1526 | lsa->data->ls_age = htons(OSPF_LSA_MAXAGE); | |
1527 | } | |
1528 | ||
1529 | /* Check if Interface was not disable in the interval */ | |
1530 | if ((exti != NULL) && !CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ACTIVE)) { | |
cf444bcf | 1531 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, |
89f60109 | 1532 | "EXT (%s): Interface was Disabled: Flush it!", |
996c9314 | 1533 | __func__); |
cf9b9f77 OD |
1534 | lsa->data->ls_age = htons(OSPF_LSA_MAXAGE); |
1535 | } | |
1536 | ||
7743f2f8 | 1537 | /* If the lsa's age reached to MaxAge, start flushing procedure */ |
cf9b9f77 OD |
1538 | if (IS_LSA_MAXAGE(lsa)) { |
1539 | if (exti) | |
1540 | UNSET_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED); | |
1541 | ospf_opaque_lsa_flush_schedule(lsa); | |
1542 | return NULL; | |
1543 | } | |
1544 | ||
7743f2f8 OD |
1545 | /* Create new Opaque-LSA/Extended Link instance */ |
1546 | new = ospf_ext_link_lsa_new(area, exti); | |
1547 | if (new == NULL) { | |
cf444bcf | 1548 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, |
89f60109 | 1549 | "EXT (%s): Error creating new LSA", __func__); |
cf9b9f77 OD |
1550 | return NULL; |
1551 | } | |
1552 | new->data->ls_seqnum = lsa_seqnum_increment(lsa); | |
1553 | ||
1554 | /* Install this LSA into LSDB. */ | |
7743f2f8 | 1555 | /* Given "lsa" will be freed in the next function */ |
cf9b9f77 | 1556 | if (ospf_lsa_install(top, NULL /*oi */, new) == NULL) { |
cf444bcf | 1557 | flog_warn(EC_OSPF_LSA_INSTALL_FAILURE, |
542a208f | 1558 | "EXT (%s): Error installing new LSA", __func__); |
cf9b9f77 OD |
1559 | ospf_lsa_unlock(&new); |
1560 | return NULL; | |
1561 | } | |
1562 | ||
1563 | /* Flood updated LSA through the link Area according to the RFC7684 */ | |
1564 | ospf_flood_through_area(area, NULL /*nbr */, new); | |
1565 | ||
1566 | /* Debug logging. */ | |
b37eb79c OD |
1567 | osr_debug("EXT (%s): LSA[Type%u:%pI4]: Refresh Extended Link LSA", |
1568 | __func__, new->data->type, &new->data->id); | |
1569 | if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) | |
cf9b9f77 | 1570 | ospf_lsa_header_dump(new->data); |
cf9b9f77 OD |
1571 | |
1572 | return new; | |
1573 | } | |
1574 | ||
1575 | /* Schedule Extended Prefix Opaque LSA origination/refreshment/flushing */ | |
1576 | static void ospf_ext_pref_lsa_schedule(struct ext_itf *exti, | |
1577 | enum lsa_opcode opcode) | |
1578 | { | |
1579 | struct ospf_lsa lsa; | |
1580 | struct lsa_header lsah; | |
1581 | struct ospf *top; | |
93f0a26e | 1582 | uint32_t tmp; |
cf9b9f77 OD |
1583 | |
1584 | memset(&lsa, 0, sizeof(lsa)); | |
1585 | memset(&lsah, 0, sizeof(lsah)); | |
1586 | ||
1587 | /* Sanity Check */ | |
1588 | if (exti == NULL) | |
1589 | return; | |
1590 | ||
1591 | /* Check if the corresponding link is ready to be flooded */ | |
1592 | if (!(CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ACTIVE))) | |
1593 | return; | |
1594 | ||
b37eb79c OD |
1595 | osr_debug("EXT (%s): Schedule %s%s%s LSA for interface %s", __func__, |
1596 | opcode == REORIGINATE_THIS_LSA ? "Re-Originate" : "", | |
1597 | opcode == REFRESH_THIS_LSA ? "Refresh" : "", | |
1598 | opcode == FLUSH_THIS_LSA ? "Flush" : "", | |
1599 | exti->ifp ? exti->ifp->name : "-"); | |
cf9b9f77 | 1600 | |
731271b0 | 1601 | /* Verify Area */ |
cf9b9f77 | 1602 | if (exti->area == NULL) { |
b37eb79c OD |
1603 | osr_debug( |
1604 | "EXT (%s): Area is not yet set. Try to use Backbone Area", | |
1605 | __func__); | |
731271b0 OD |
1606 | |
1607 | top = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1608 | struct in_addr backbone = {.s_addr = INADDR_ANY}; | |
1609 | exti->area = ospf_area_lookup_by_area_id(top, backbone); | |
1610 | if (exti->area == NULL) { | |
1611 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, | |
1612 | "EXT (%s): Unable to set Area", __func__); | |
1613 | return; | |
cf9b9f77 | 1614 | } |
cf9b9f77 | 1615 | } |
731271b0 | 1616 | /* Set LSA header information */ |
cf9b9f77 OD |
1617 | lsa.area = exti->area; |
1618 | lsa.data = &lsah; | |
1619 | lsah.type = OSPF_OPAQUE_AREA_LSA; | |
1620 | tmp = SET_OPAQUE_LSID(OPAQUE_TYPE_EXTENDED_PREFIX_LSA, exti->instance); | |
1621 | lsah.id.s_addr = htonl(tmp); | |
1622 | ||
1623 | switch (opcode) { | |
1624 | case REORIGINATE_THIS_LSA: | |
1625 | ospf_opaque_lsa_reoriginate_schedule( | |
1626 | (void *)exti->area, OSPF_OPAQUE_AREA_LSA, | |
1627 | OPAQUE_TYPE_EXTENDED_PREFIX_LSA); | |
1628 | break; | |
1629 | case REFRESH_THIS_LSA: | |
1630 | ospf_opaque_lsa_refresh_schedule(&lsa); | |
1631 | break; | |
1632 | case FLUSH_THIS_LSA: | |
1633 | UNSET_FLAG(exti->flags, EXT_LPFLG_LSA_ENGAGED); | |
1634 | ospf_opaque_lsa_flush_schedule(&lsa); | |
1635 | break; | |
cf9b9f77 | 1636 | } |
cf9b9f77 OD |
1637 | } |
1638 | ||
1639 | /* Schedule Extended Link Opaque LSA origination/refreshment/flushing */ | |
1640 | static void ospf_ext_link_lsa_schedule(struct ext_itf *exti, | |
1641 | enum lsa_opcode opcode) | |
1642 | { | |
1643 | struct ospf_lsa lsa; | |
1644 | struct lsa_header lsah; | |
1645 | struct ospf *top; | |
93f0a26e | 1646 | uint32_t tmp; |
cf9b9f77 OD |
1647 | |
1648 | memset(&lsa, 0, sizeof(lsa)); | |
1649 | memset(&lsah, 0, sizeof(lsah)); | |
1650 | ||
1651 | /* Sanity Check */ | |
1652 | if (exti == NULL) | |
1653 | return; | |
1654 | ||
1655 | /* Check if the corresponding link is ready to be flooded */ | |
1656 | if (!(CHECK_FLAG(exti->flags, EXT_LPFLG_LSA_ACTIVE))) | |
1657 | return; | |
1658 | ||
b37eb79c OD |
1659 | osr_debug("EXT (%s): Schedule %s%s%s LSA for interface %s", __func__, |
1660 | opcode == REORIGINATE_THIS_LSA ? "Re-Originate" : "", | |
1661 | opcode == REFRESH_THIS_LSA ? "Refresh" : "", | |
1662 | opcode == FLUSH_THIS_LSA ? "Flush" : "", | |
1663 | exti->ifp ? exti->ifp->name : "-"); | |
cf9b9f77 | 1664 | |
731271b0 | 1665 | /* Verify Area */ |
cf9b9f77 | 1666 | if (exti->area == NULL) { |
b37eb79c OD |
1667 | osr_debug( |
1668 | "EXT (%s): Area is not yet set. Try to use Backbone Area", | |
1669 | __func__); | |
731271b0 OD |
1670 | |
1671 | top = ospf_lookup_by_vrf_id(VRF_DEFAULT); | |
1672 | struct in_addr backbone = {.s_addr = INADDR_ANY}; | |
1673 | exti->area = ospf_area_lookup_by_area_id(top, backbone); | |
1674 | if (exti->area == NULL) { | |
1675 | flog_warn(EC_OSPF_EXT_LSA_UNEXPECTED, | |
1676 | "EXT (%s): Unable to set Area", __func__); | |
1677 | return; | |
cf9b9f77 | 1678 | } |
cf9b9f77 | 1679 | } |
731271b0 | 1680 | /* Set LSA header information */ |
cf9b9f77 OD |
1681 | lsa.area = exti->area; |
1682 | lsa.data = &lsah; | |
1683 | lsah.type = OSPF_OPAQUE_AREA_LSA; | |
1684 | tmp = SET_OPAQUE_LSID(OPAQUE_TYPE_EXTENDED_LINK_LSA, exti->instance); | |
1685 | lsah.id.s_addr = htonl(tmp); | |
1686 | ||
1687 | switch (opcode) { | |
1688 | case REORIGINATE_THIS_LSA: | |
1689 | ospf_opaque_lsa_reoriginate_schedule( | |
1690 | (void *)exti->area, OSPF_OPAQUE_AREA_LSA, | |
1691 | OPAQUE_TYPE_EXTENDED_LINK_LSA); | |
1692 | break; | |
1693 | case REFRESH_THIS_LSA: | |
1694 | ospf_opaque_lsa_refresh_schedule(&lsa); | |
1695 | break; | |
1696 | case FLUSH_THIS_LSA: | |
cf9b9f77 OD |
1697 | ospf_opaque_lsa_flush_schedule(&lsa); |
1698 | break; | |
cf9b9f77 | 1699 | } |
cf9b9f77 OD |
1700 | } |
1701 | ||
1702 | /* Schedule Extended Link or Prefix depending of the Type of LSA */ | |
1703 | static void ospf_ext_lsa_schedule(struct ext_itf *exti, enum lsa_opcode op) | |
1704 | { | |
1705 | ||
1706 | if (exti->stype == PREF_SID) | |
1707 | ospf_ext_pref_lsa_schedule(exti, op); | |
1708 | else | |
1709 | ospf_ext_link_lsa_schedule(exti, op); | |
1710 | } | |
1711 | ||
7743f2f8 OD |
1712 | /* |
1713 | * ------------------------------------ | |
cf9b9f77 | 1714 | * Followings are vty show functions. |
7743f2f8 OD |
1715 | * ------------------------------------ |
1716 | */ | |
1717 | ||
8db278b5 OD |
1718 | #define check_tlv_size(size, msg) \ |
1719 | do { \ | |
1720 | if (ntohs(tlvh->length) != size) { \ | |
1721 | vty_out(vty, " Wrong %s TLV size: %d(%d). Abort!\n", \ | |
1722 | msg, ntohs(tlvh->length), size); \ | |
1723 | return size + TLV_HDR_SIZE; \ | |
1724 | } \ | |
1725 | } while (0) | |
1726 | ||
cf9b9f77 | 1727 | /* Cisco experimental SubTLV */ |
93f0a26e | 1728 | static uint16_t show_vty_ext_link_rmt_itf_addr(struct vty *vty, |
996c9314 | 1729 | struct tlv_header *tlvh) |
cf9b9f77 | 1730 | { |
8db278b5 OD |
1731 | struct ext_subtlv_rmt_itf_addr *top = |
1732 | (struct ext_subtlv_rmt_itf_addr *)tlvh; | |
7743f2f8 | 1733 | |
8db278b5 | 1734 | check_tlv_size(EXT_SUBTLV_RMT_ITF_ADDR_SIZE, "Remote Itf. Address"); |
cf9b9f77 OD |
1735 | |
1736 | vty_out(vty, | |
96b663a3 MS |
1737 | " Remote Interface Address Sub-TLV: Length %u\n Address: %pI4\n", |
1738 | ntohs(top->header.length), &top->value); | |
cf9b9f77 OD |
1739 | |
1740 | return TLV_SIZE(tlvh); | |
1741 | } | |
1742 | ||
1743 | /* Adjacency SID SubTLV */ | |
93f0a26e | 1744 | static uint16_t show_vty_ext_link_adj_sid(struct vty *vty, |
996c9314 | 1745 | struct tlv_header *tlvh) |
cf9b9f77 OD |
1746 | { |
1747 | struct ext_subtlv_adj_sid *top = (struct ext_subtlv_adj_sid *)tlvh; | |
1748 | ||
8db278b5 OD |
1749 | check_tlv_size(EXT_SUBTLV_ADJ_SID_SIZE, "Adjacency SID"); |
1750 | ||
cf9b9f77 | 1751 | vty_out(vty, |
3efd0893 | 1752 | " Adj-SID Sub-TLV: Length %u\n\tFlags: 0x%x\n\tMT-ID:0x%x\n\tWeight: 0x%x\n\t%s: %u\n", |
cf9b9f77 OD |
1753 | ntohs(top->header.length), top->flags, top->mtid, top->weight, |
1754 | CHECK_FLAG(top->flags, EXT_SUBTLV_LINK_ADJ_SID_VFLG) ? "Label" | |
1755 | : "Index", | |
1756 | CHECK_FLAG(top->flags, EXT_SUBTLV_LINK_ADJ_SID_VFLG) | |
1757 | ? GET_LABEL(ntohl(top->value)) | |
1758 | : ntohl(top->value)); | |
1759 | ||
1760 | return TLV_SIZE(tlvh); | |
1761 | } | |
1762 | ||
1763 | /* LAN Adjacency SubTLV */ | |
93f0a26e | 1764 | static uint16_t show_vty_ext_link_lan_adj_sid(struct vty *vty, |
996c9314 | 1765 | struct tlv_header *tlvh) |
cf9b9f77 OD |
1766 | { |
1767 | struct ext_subtlv_lan_adj_sid *top = | |
1768 | (struct ext_subtlv_lan_adj_sid *)tlvh; | |
1769 | ||
8db278b5 OD |
1770 | check_tlv_size(EXT_SUBTLV_LAN_ADJ_SID_SIZE, "Lan-Adjacency SID"); |
1771 | ||
cf9b9f77 | 1772 | vty_out(vty, |
96b663a3 | 1773 | " LAN-Adj-SID Sub-TLV: Length %u\n\tFlags: 0x%x\n\tMT-ID:0x%x\n\tWeight: 0x%x\n\tNeighbor ID: %pI4\n\t%s: %u\n", |
cf9b9f77 | 1774 | ntohs(top->header.length), top->flags, top->mtid, top->weight, |
96b663a3 | 1775 | &top->neighbor_id, |
cf9b9f77 OD |
1776 | CHECK_FLAG(top->flags, EXT_SUBTLV_LINK_ADJ_SID_VFLG) ? "Label" |
1777 | : "Index", | |
1778 | CHECK_FLAG(top->flags, EXT_SUBTLV_LINK_ADJ_SID_VFLG) | |
1779 | ? GET_LABEL(ntohl(top->value)) | |
1780 | : ntohl(top->value)); | |
1781 | ||
1782 | return TLV_SIZE(tlvh); | |
1783 | } | |
1784 | ||
8db278b5 OD |
1785 | static uint16_t show_vty_unknown_tlv(struct vty *vty, struct tlv_header *tlvh, |
1786 | size_t buf_size) | |
cf9b9f77 | 1787 | { |
8db278b5 OD |
1788 | if (TLV_SIZE(tlvh) > buf_size) { |
1789 | vty_out(vty, " TLV size %d exceeds buffer size. Abort!", | |
1790 | TLV_SIZE(tlvh)); | |
1791 | return buf_size; | |
1792 | } | |
1793 | ||
cf9b9f77 OD |
1794 | vty_out(vty, " Unknown TLV: [type(0x%x), length(0x%x)]\n", |
1795 | ntohs(tlvh->type), ntohs(tlvh->length)); | |
1796 | ||
1797 | return TLV_SIZE(tlvh); | |
1798 | } | |
1799 | ||
1800 | /* Extended Link Sub TLVs */ | |
8db278b5 OD |
1801 | static uint16_t show_vty_link_info(struct vty *vty, struct tlv_header *ext, |
1802 | size_t buf_size) | |
cf9b9f77 OD |
1803 | { |
1804 | struct ext_tlv_link *top = (struct ext_tlv_link *)ext; | |
1805 | struct tlv_header *tlvh; | |
8db278b5 | 1806 | uint16_t length = ntohs(top->header.length); |
93f0a26e | 1807 | uint16_t sum = 0; |
cf9b9f77 | 1808 | |
8db278b5 OD |
1809 | /* Verify that TLV length is valid against remaining buffer size */ |
1810 | if (length > buf_size) { | |
1811 | vty_out(vty, | |
1812 | " Extended Link TLV size %d exceeds buffer size. Abort!\n", | |
1813 | length); | |
1814 | return buf_size; | |
1815 | } | |
1816 | ||
cf9b9f77 | 1817 | vty_out(vty, |
7743f2f8 | 1818 | " Extended Link TLV: Length %u\n Link Type: 0x%x\n" |
96b663a3 | 1819 | " Link ID: %pI4\n", |
cf9b9f77 | 1820 | ntohs(top->header.length), top->link_type, |
96b663a3 MS |
1821 | &top->link_id); |
1822 | vty_out(vty, " Link data: %pI4\n", &top->link_data); | |
cf9b9f77 | 1823 | |
8db278b5 OD |
1824 | /* Skip Extended TLV and parse sub-TLVs */ |
1825 | length -= EXT_TLV_LINK_SIZE; | |
cf9b9f77 OD |
1826 | tlvh = (struct tlv_header *)((char *)(ext) + TLV_HDR_SIZE |
1827 | + EXT_TLV_LINK_SIZE); | |
8db278b5 | 1828 | for (; sum < length && tlvh; tlvh = TLV_HDR_NEXT(tlvh)) { |
cf9b9f77 OD |
1829 | switch (ntohs(tlvh->type)) { |
1830 | case EXT_SUBTLV_ADJ_SID: | |
1831 | sum += show_vty_ext_link_adj_sid(vty, tlvh); | |
1832 | break; | |
1833 | case EXT_SUBTLV_LAN_ADJ_SID: | |
1834 | sum += show_vty_ext_link_lan_adj_sid(vty, tlvh); | |
1835 | break; | |
1836 | case EXT_SUBTLV_RMT_ITF_ADDR: | |
1837 | sum += show_vty_ext_link_rmt_itf_addr(vty, tlvh); | |
1838 | break; | |
1839 | default: | |
8db278b5 | 1840 | sum += show_vty_unknown_tlv(vty, tlvh, length - sum); |
cf9b9f77 OD |
1841 | break; |
1842 | } | |
1843 | } | |
1844 | ||
1845 | return sum + sizeof(struct ext_tlv_link); | |
1846 | } | |
1847 | ||
1848 | /* Extended Link TLVs */ | |
1849 | static void ospf_ext_link_show_info(struct vty *vty, struct ospf_lsa *lsa) | |
1850 | { | |
c4efd0f4 | 1851 | struct lsa_header *lsah = lsa->data; |
cf9b9f77 | 1852 | struct tlv_header *tlvh; |
93f0a26e | 1853 | uint16_t length = 0, sum = 0; |
cf9b9f77 OD |
1854 | |
1855 | /* Initialize TLV browsing */ | |
8db278b5 | 1856 | length = lsa->size - OSPF_LSA_HEADER_SIZE; |
cf9b9f77 | 1857 | |
8db278b5 | 1858 | for (tlvh = TLV_HDR_TOP(lsah); sum < length && tlvh; |
cf9b9f77 OD |
1859 | tlvh = TLV_HDR_NEXT(tlvh)) { |
1860 | switch (ntohs(tlvh->type)) { | |
1861 | case EXT_TLV_LINK: | |
8db278b5 | 1862 | sum += show_vty_link_info(vty, tlvh, length - sum); |
cf9b9f77 OD |
1863 | break; |
1864 | default: | |
8db278b5 | 1865 | sum += show_vty_unknown_tlv(vty, tlvh, length - sum); |
cf9b9f77 OD |
1866 | break; |
1867 | } | |
1868 | } | |
cf9b9f77 OD |
1869 | } |
1870 | ||
1871 | /* Prefix SID SubTLV */ | |
93f0a26e | 1872 | static uint16_t show_vty_ext_pref_pref_sid(struct vty *vty, |
996c9314 | 1873 | struct tlv_header *tlvh) |
cf9b9f77 OD |
1874 | { |
1875 | struct ext_subtlv_prefix_sid *top = | |
1876 | (struct ext_subtlv_prefix_sid *)tlvh; | |
1877 | ||
8db278b5 OD |
1878 | check_tlv_size(EXT_SUBTLV_PREFIX_SID_SIZE, "Prefix SID"); |
1879 | ||
cf9b9f77 | 1880 | vty_out(vty, |
3efd0893 | 1881 | " Prefix SID Sub-TLV: Length %u\n\tAlgorithm: %u\n\tFlags: 0x%x\n\tMT-ID:0x%x\n\t%s: %u\n", |
cf9b9f77 OD |
1882 | ntohs(top->header.length), top->algorithm, top->flags, |
1883 | top->mtid, | |
1884 | CHECK_FLAG(top->flags, EXT_SUBTLV_PREFIX_SID_VFLG) ? "Label" | |
1885 | : "Index", | |
1886 | CHECK_FLAG(top->flags, EXT_SUBTLV_PREFIX_SID_VFLG) | |
1887 | ? GET_LABEL(ntohl(top->value)) | |
1888 | : ntohl(top->value)); | |
1889 | ||
1890 | return TLV_SIZE(tlvh); | |
1891 | } | |
1892 | ||
1893 | /* Extended Prefix SubTLVs */ | |
8db278b5 OD |
1894 | static uint16_t show_vty_pref_info(struct vty *vty, struct tlv_header *ext, |
1895 | size_t buf_size) | |
cf9b9f77 OD |
1896 | { |
1897 | struct ext_tlv_prefix *top = (struct ext_tlv_prefix *)ext; | |
1898 | struct tlv_header *tlvh; | |
8db278b5 | 1899 | uint16_t length = ntohs(top->header.length); |
93f0a26e | 1900 | uint16_t sum = 0; |
cf9b9f77 | 1901 | |
8db278b5 OD |
1902 | /* Verify that TLV length is valid against remaining buffer size */ |
1903 | if (length > buf_size) { | |
1904 | vty_out(vty, | |
1905 | " Extended Link TLV size %d exceeds buffer size. Abort!\n", | |
1906 | length); | |
1907 | return buf_size; | |
1908 | } | |
1909 | ||
cf9b9f77 | 1910 | vty_out(vty, |
7743f2f8 | 1911 | " Extended Prefix TLV: Length %u\n\tRoute Type: %u\n" |
96b663a3 | 1912 | "\tAddress Family: 0x%x\n\tFlags: 0x%x\n\tAddress: %pI4/%u\n", |
cf9b9f77 | 1913 | ntohs(top->header.length), top->route_type, top->af, top->flags, |
96b663a3 | 1914 | &top->address, top->pref_length); |
cf9b9f77 | 1915 | |
8db278b5 OD |
1916 | /* Skip Extended Prefix TLV and parse sub-TLVs */ |
1917 | length -= EXT_TLV_PREFIX_SIZE; | |
cf9b9f77 OD |
1918 | tlvh = (struct tlv_header *)((char *)(ext) + TLV_HDR_SIZE |
1919 | + EXT_TLV_PREFIX_SIZE); | |
8db278b5 | 1920 | for (; sum < length && tlvh; tlvh = TLV_HDR_NEXT(tlvh)) { |
cf9b9f77 OD |
1921 | switch (ntohs(tlvh->type)) { |
1922 | case EXT_SUBTLV_PREFIX_SID: | |
1923 | sum += show_vty_ext_pref_pref_sid(vty, tlvh); | |
1924 | break; | |
1925 | default: | |
8db278b5 | 1926 | sum += show_vty_unknown_tlv(vty, tlvh, length - sum); |
cf9b9f77 OD |
1927 | break; |
1928 | } | |
1929 | } | |
1930 | ||
1931 | return sum + sizeof(struct ext_tlv_prefix); | |
1932 | } | |
1933 | ||
1934 | /* Extended Prefix TLVs */ | |
1935 | static void ospf_ext_pref_show_info(struct vty *vty, struct ospf_lsa *lsa) | |
1936 | { | |
c4efd0f4 | 1937 | struct lsa_header *lsah = lsa->data; |
cf9b9f77 | 1938 | struct tlv_header *tlvh; |
93f0a26e | 1939 | uint16_t length = 0, sum = 0; |
cf9b9f77 OD |
1940 | |
1941 | /* Initialize TLV browsing */ | |
8db278b5 | 1942 | length = lsa->size - OSPF_LSA_HEADER_SIZE; |
cf9b9f77 | 1943 | |
8db278b5 | 1944 | for (tlvh = TLV_HDR_TOP(lsah); sum < length && tlvh; |
cf9b9f77 OD |
1945 | tlvh = TLV_HDR_NEXT(tlvh)) { |
1946 | switch (ntohs(tlvh->type)) { | |
1947 | case EXT_TLV_PREFIX: | |
8db278b5 | 1948 | sum += show_vty_pref_info(vty, tlvh, length - sum); |
cf9b9f77 OD |
1949 | break; |
1950 | default: | |
8db278b5 | 1951 | sum += show_vty_unknown_tlv(vty, tlvh, length - sum); |
cf9b9f77 OD |
1952 | break; |
1953 | } | |
1954 | } | |
cf9b9f77 | 1955 | } |