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f3ccedaa CF |
1 | /* |
2 | * IS-IS Rout(e)ing protocol - isis_redist.c | |
3 | * | |
4 | * Copyright (C) 2013-2015 Christian Franke <chris@opensourcerouting.org> | |
5 | * | |
d62a17ae | 6 | * This program is free software; you can redistribute it and/or modify it |
7 | * under the terms of the GNU General Public License as published by the Free | |
8 | * Software Foundation; either version 2 of the License, or (at your option) | |
f3ccedaa CF |
9 | * any later version. |
10 | * | |
d62a17ae | 11 | * This program is distributed in the hope that it will be useful,but WITHOUT |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
f3ccedaa | 14 | * more details. |
896014f4 DL |
15 | * |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
f3ccedaa CF |
19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "command.h" | |
24 | #include "if.h" | |
25 | #include "linklist.h" | |
26 | #include "memory.h" | |
4a1ab8e4 | 27 | #include "isis_memory.h" |
f3ccedaa CF |
28 | #include "prefix.h" |
29 | #include "routemap.h" | |
30 | #include "stream.h" | |
31 | #include "table.h" | |
32 | #include "vty.h" | |
33 | ||
34 | #include "isisd/dict.h" | |
35 | #include "isisd/isis_constants.h" | |
36 | #include "isisd/isis_common.h" | |
37 | #include "isisd/isis_flags.h" | |
38 | #include "isisd/isis_misc.h" | |
39 | #include "isisd/isis_circuit.h" | |
f3ccedaa CF |
40 | #include "isisd/isisd.h" |
41 | #include "isisd/isis_lsp.h" | |
42 | #include "isisd/isis_route.h" | |
43 | #include "isisd/isis_zebra.h" | |
44 | ||
d62a17ae | 45 | static int redist_protocol(int family) |
f3ccedaa | 46 | { |
d62a17ae | 47 | if (family == AF_INET) |
48 | return 0; | |
49 | if (family == AF_INET6) | |
50 | return 1; | |
f3ccedaa | 51 | |
d62a17ae | 52 | assert(!"Unsupported address family!"); |
53 | return 0; | |
f3ccedaa CF |
54 | } |
55 | ||
d62a17ae | 56 | static afi_t afi_for_redist_protocol(int protocol) |
113b1946 | 57 | { |
d62a17ae | 58 | if (protocol == 0) |
59 | return AFI_IP; | |
60 | if (protocol == 1) | |
61 | return AFI_IP6; | |
113b1946 | 62 | |
d62a17ae | 63 | assert(!"Unknown redist protocol!"); |
64 | return AFI_IP; | |
113b1946 CF |
65 | } |
66 | ||
d62a17ae | 67 | static struct route_table *get_ext_info(struct isis *i, int family) |
f3ccedaa | 68 | { |
d62a17ae | 69 | int protocol = redist_protocol(family); |
f3ccedaa | 70 | |
d62a17ae | 71 | return i->ext_info[protocol]; |
f3ccedaa CF |
72 | } |
73 | ||
d62a17ae | 74 | static struct isis_redist *get_redist_settings(struct isis_area *area, |
75 | int family, int type, int level) | |
f3ccedaa | 76 | { |
d62a17ae | 77 | int protocol = redist_protocol(family); |
f3ccedaa | 78 | |
d62a17ae | 79 | return &area->redist_settings[protocol][type][level - 1]; |
f3ccedaa CF |
80 | } |
81 | ||
d62a17ae | 82 | struct route_table *get_ext_reach(struct isis_area *area, int family, int level) |
f3ccedaa | 83 | { |
d62a17ae | 84 | int protocol = redist_protocol(family); |
f3ccedaa | 85 | |
d62a17ae | 86 | return area->ext_reach[protocol][level - 1]; |
f3ccedaa CF |
87 | } |
88 | ||
89 | static struct route_node * | |
90 | isis_redist_route_node_create(route_table_delegate_t *delegate, | |
d62a17ae | 91 | struct route_table *table) |
f3ccedaa | 92 | { |
d62a17ae | 93 | struct route_node *node; |
94 | node = XCALLOC(MTYPE_ISIS_EXT_ROUTE, sizeof(*node)); | |
95 | return node; | |
f3ccedaa CF |
96 | } |
97 | ||
d62a17ae | 98 | static void isis_redist_route_node_destroy(route_table_delegate_t *delegate, |
99 | struct route_table *table, | |
100 | struct route_node *node) | |
f3ccedaa | 101 | { |
d62a17ae | 102 | if (node->info) |
103 | XFREE(MTYPE_ISIS_EXT_INFO, node->info); | |
104 | XFREE(MTYPE_ISIS_EXT_ROUTE, node); | |
f3ccedaa CF |
105 | } |
106 | ||
107 | static route_table_delegate_t isis_redist_rt_delegate = { | |
d62a17ae | 108 | .create_node = isis_redist_route_node_create, |
109 | .destroy_node = isis_redist_route_node_destroy}; | |
f3ccedaa CF |
110 | |
111 | /* Install external reachability information into a | |
112 | * specific area for a specific level. | |
113 | * Schedule an lsp regenerate if necessary */ | |
d62a17ae | 114 | static void isis_redist_install(struct isis_area *area, int level, |
115 | struct prefix *p, struct isis_ext_info *info) | |
f3ccedaa | 116 | { |
d62a17ae | 117 | int family = p->family; |
118 | struct route_table *er_table = get_ext_reach(area, family, level); | |
119 | struct route_node *er_node; | |
120 | ||
121 | if (!er_table) { | |
122 | zlog_warn( | |
123 | "%s: External reachability table of area %s" | |
124 | " is not initialized.", | |
125 | __func__, area->area_tag); | |
126 | return; | |
127 | } | |
128 | ||
129 | er_node = route_node_get(er_table, p); | |
130 | if (er_node->info) { | |
131 | route_unlock_node(er_node); | |
132 | ||
133 | /* Don't update/reschedule lsp generation if nothing changed. */ | |
134 | if (!memcmp(er_node->info, info, sizeof(*info))) | |
135 | return; | |
136 | } else { | |
137 | er_node->info = XMALLOC(MTYPE_ISIS_EXT_INFO, sizeof(*info)); | |
138 | } | |
139 | ||
140 | memcpy(er_node->info, info, sizeof(*info)); | |
141 | lsp_regenerate_schedule(area, level, 0); | |
f3ccedaa CF |
142 | } |
143 | ||
144 | /* Remove external reachability information from a | |
145 | * specific area for a specific level. | |
146 | * Schedule an lsp regenerate if necessary. */ | |
d62a17ae | 147 | static void isis_redist_uninstall(struct isis_area *area, int level, |
148 | struct prefix *p) | |
f3ccedaa | 149 | { |
d62a17ae | 150 | int family = p->family; |
151 | struct route_table *er_table = get_ext_reach(area, family, level); | |
152 | struct route_node *er_node; | |
153 | ||
154 | if (!er_table) { | |
155 | zlog_warn( | |
156 | "%s: External reachability table of area %s" | |
157 | " is not initialized.", | |
158 | __func__, area->area_tag); | |
159 | return; | |
160 | } | |
161 | ||
162 | er_node = route_node_lookup(er_table, p); | |
163 | if (!er_node) | |
164 | return; | |
165 | else | |
166 | route_unlock_node(er_node); | |
167 | ||
168 | if (!er_node->info) | |
169 | return; | |
170 | ||
171 | XFREE(MTYPE_ISIS_EXT_INFO, er_node->info); | |
172 | route_unlock_node(er_node); | |
173 | lsp_regenerate_schedule(area, level, 0); | |
f3ccedaa CF |
174 | } |
175 | ||
176 | /* Update external reachability info of area for a given level | |
177 | * and prefix, using the given redistribution settings. */ | |
d62a17ae | 178 | static void isis_redist_update_ext_reach(struct isis_area *area, int level, |
179 | struct isis_redist *redist, | |
180 | struct prefix *p, | |
181 | struct isis_ext_info *info) | |
f3ccedaa | 182 | { |
d62a17ae | 183 | struct isis_ext_info area_info; |
184 | route_map_result_t map_ret; | |
185 | ||
186 | memcpy(&area_info, info, sizeof(area_info)); | |
8cfc8c5c | 187 | area_info.metric = redist->metric; |
d62a17ae | 188 | |
189 | if (redist->map_name) { | |
190 | map_ret = | |
191 | route_map_apply(redist->map, p, RMAP_ISIS, &area_info); | |
192 | if (map_ret == RMAP_DENYMATCH) | |
193 | area_info.distance = 255; | |
194 | } | |
195 | ||
196 | /* Allow synthesized default routes only on always orignate */ | |
197 | if (area_info.origin == DEFAULT_ROUTE | |
198 | && redist->redist != DEFAULT_ORIGINATE_ALWAYS) | |
199 | area_info.distance = 255; | |
200 | ||
201 | if (area_info.distance < 255) | |
202 | isis_redist_install(area, level, p, &area_info); | |
203 | else | |
204 | isis_redist_uninstall(area, level, p); | |
f3ccedaa CF |
205 | } |
206 | ||
d62a17ae | 207 | static void isis_redist_ensure_default(struct isis *isis, int family) |
f3ccedaa | 208 | { |
d62a17ae | 209 | struct prefix p; |
210 | struct route_table *ei_table = get_ext_info(isis, family); | |
211 | struct route_node *ei_node; | |
212 | struct isis_ext_info *info; | |
213 | ||
214 | if (family == AF_INET) { | |
215 | p.family = AF_INET; | |
216 | p.prefixlen = 0; | |
217 | memset(&p.u.prefix4, 0, sizeof(p.u.prefix4)); | |
218 | } else if (family == AF_INET6) { | |
219 | p.family = AF_INET6; | |
220 | p.prefixlen = 0; | |
221 | memset(&p.u.prefix6, 0, sizeof(p.u.prefix6)); | |
222 | } else | |
223 | assert(!"Unknown family!"); | |
224 | ||
225 | ei_node = route_node_get(ei_table, &p); | |
226 | if (ei_node->info) { | |
227 | route_unlock_node(ei_node); | |
228 | return; | |
229 | } | |
230 | ||
231 | ei_node->info = | |
232 | XCALLOC(MTYPE_ISIS_EXT_INFO, sizeof(struct isis_ext_info)); | |
233 | ||
234 | info = ei_node->info; | |
235 | info->origin = DEFAULT_ROUTE; | |
236 | info->distance = 254; | |
237 | info->metric = MAX_WIDE_PATH_METRIC; | |
f3ccedaa CF |
238 | } |
239 | ||
240 | /* Handle notification about route being added */ | |
d7c0a89a | 241 | void isis_redist_add(int type, struct prefix *p, uint8_t distance, |
d62a17ae | 242 | uint32_t metric) |
f3ccedaa | 243 | { |
d62a17ae | 244 | int family = p->family; |
245 | struct route_table *ei_table = get_ext_info(isis, family); | |
246 | struct route_node *ei_node; | |
247 | struct isis_ext_info *info; | |
248 | struct listnode *node; | |
249 | struct isis_area *area; | |
250 | int level; | |
251 | struct isis_redist *redist; | |
252 | ||
253 | char debug_buf[BUFSIZ]; | |
254 | prefix2str(p, debug_buf, sizeof(debug_buf)); | |
255 | ||
c44bd447 PZ |
256 | zlog_debug("%s: New route %s from %s: distance %d.", __func__, |
257 | debug_buf, zebra_route_string(type), distance); | |
d62a17ae | 258 | |
259 | if (!ei_table) { | |
260 | zlog_warn("%s: External information table not initialized.", | |
261 | __func__); | |
262 | return; | |
263 | } | |
264 | ||
265 | ei_node = route_node_get(ei_table, p); | |
266 | if (ei_node->info) | |
267 | route_unlock_node(ei_node); | |
268 | else | |
269 | ei_node->info = XCALLOC(MTYPE_ISIS_EXT_INFO, | |
270 | sizeof(struct isis_ext_info)); | |
271 | ||
272 | info = ei_node->info; | |
273 | info->origin = type; | |
274 | info->distance = distance; | |
275 | info->metric = metric; | |
276 | ||
f229873a | 277 | if (is_default_prefix(p)) |
d62a17ae | 278 | type = DEFAULT_ROUTE; |
279 | ||
280 | for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area)) | |
281 | for (level = 1; level <= ISIS_LEVELS; level++) { | |
282 | redist = get_redist_settings(area, family, type, level); | |
283 | if (!redist->redist) | |
284 | continue; | |
285 | ||
286 | isis_redist_update_ext_reach(area, level, redist, p, | |
287 | info); | |
288 | } | |
f3ccedaa CF |
289 | } |
290 | ||
d62a17ae | 291 | void isis_redist_delete(int type, struct prefix *p) |
f3ccedaa | 292 | { |
d62a17ae | 293 | int family = p->family; |
294 | struct route_table *ei_table = get_ext_info(isis, family); | |
295 | struct route_node *ei_node; | |
296 | struct listnode *node; | |
297 | struct isis_area *area; | |
298 | int level; | |
299 | struct isis_redist *redist; | |
300 | ||
301 | char debug_buf[BUFSIZ]; | |
302 | prefix2str(p, debug_buf, sizeof(debug_buf)); | |
303 | ||
304 | zlog_debug("%s: Removing route %s from %s.", __func__, debug_buf, | |
305 | zebra_route_string(type)); | |
306 | ||
f229873a | 307 | if (is_default_prefix(p)) { |
d62a17ae | 308 | /* Don't remove default route but add synthetic route for use |
309 | * by "default-information originate always". Areas without the | |
310 | * "always" setting will ignore routes with origin | |
311 | * DEFAULT_ROUTE. */ | |
312 | isis_redist_add(DEFAULT_ROUTE, p, 254, MAX_WIDE_PATH_METRIC); | |
313 | return; | |
314 | } | |
315 | ||
316 | if (!ei_table) { | |
317 | zlog_warn("%s: External information table not initialized.", | |
318 | __func__); | |
319 | return; | |
320 | } | |
321 | ||
322 | ei_node = route_node_lookup(ei_table, p); | |
323 | if (!ei_node || !ei_node->info) { | |
324 | char buf[BUFSIZ]; | |
325 | prefix2str(p, buf, sizeof(buf)); | |
326 | zlog_warn( | |
327 | "%s: Got a delete for %s route %s, but that route" | |
328 | " was never added.", | |
329 | __func__, zebra_route_string(type), buf); | |
330 | if (ei_node) | |
331 | route_unlock_node(ei_node); | |
332 | return; | |
333 | } | |
334 | route_unlock_node(ei_node); | |
335 | ||
336 | for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area)) | |
337 | for (level = 1; level < ISIS_LEVELS; level++) { | |
338 | redist = get_redist_settings(area, family, type, level); | |
339 | if (!redist->redist) | |
340 | continue; | |
341 | ||
342 | isis_redist_uninstall(area, level, p); | |
343 | } | |
344 | ||
345 | XFREE(MTYPE_ISIS_EXT_INFO, ei_node->info); | |
346 | route_unlock_node(ei_node); | |
f3ccedaa CF |
347 | } |
348 | ||
d62a17ae | 349 | static void isis_redist_routemap_set(struct isis_redist *redist, |
350 | const char *routemap) | |
f3ccedaa | 351 | { |
d62a17ae | 352 | if (redist->map_name) { |
353 | XFREE(MTYPE_ISIS, redist->map_name); | |
354 | redist->map = NULL; | |
355 | } | |
356 | ||
357 | if (routemap && strlen(routemap)) { | |
358 | redist->map_name = XSTRDUP(MTYPE_ISIS, routemap); | |
359 | redist->map = route_map_lookup_by_name(routemap); | |
360 | } | |
f3ccedaa CF |
361 | } |
362 | ||
d62a17ae | 363 | static void isis_redist_update_zebra_subscriptions(struct isis *isis) |
f3ccedaa | 364 | { |
d62a17ae | 365 | struct listnode *node; |
366 | struct isis_area *area; | |
367 | int type; | |
368 | int level; | |
369 | int protocol; | |
370 | ||
371 | char do_subscribe[REDIST_PROTOCOL_COUNT][ZEBRA_ROUTE_MAX + 1]; | |
372 | ||
373 | memset(do_subscribe, 0, sizeof(do_subscribe)); | |
374 | ||
375 | for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area)) | |
376 | for (protocol = 0; protocol < REDIST_PROTOCOL_COUNT; protocol++) | |
377 | for (type = 0; type < ZEBRA_ROUTE_MAX + 1; type++) | |
378 | for (level = 0; level < ISIS_LEVELS; level++) | |
9d303b37 DL |
379 | if (area->redist_settings[protocol] |
380 | [type] | |
381 | [level].redist) | |
d62a17ae | 382 | do_subscribe[protocol][type] = |
383 | 1; | |
384 | ||
385 | for (protocol = 0; protocol < REDIST_PROTOCOL_COUNT; protocol++) | |
386 | for (type = 0; type < ZEBRA_ROUTE_MAX + 1; type++) { | |
387 | /* This field is actually controlling transmission of | |
388 | * the IS-IS | |
389 | * routes to Zebra and has nothing to do with | |
390 | * redistribution, | |
391 | * so skip it. */ | |
392 | if (type == ZEBRA_ROUTE_ISIS) | |
393 | continue; | |
394 | ||
395 | afi_t afi = afi_for_redist_protocol(protocol); | |
396 | ||
397 | if (do_subscribe[protocol][type]) | |
398 | isis_zebra_redistribute_set(afi, type); | |
399 | else | |
400 | isis_zebra_redistribute_unset(afi, type); | |
401 | } | |
f3ccedaa CF |
402 | } |
403 | ||
d62a17ae | 404 | static void isis_redist_set(struct isis_area *area, int level, int family, |
405 | int type, uint32_t metric, const char *routemap, | |
406 | int originate_type) | |
f3ccedaa | 407 | { |
d62a17ae | 408 | int protocol = redist_protocol(family); |
409 | struct isis_redist *redist = | |
410 | get_redist_settings(area, family, type, level); | |
411 | int i; | |
412 | struct route_table *ei_table; | |
413 | struct route_node *rn; | |
414 | struct isis_ext_info *info; | |
415 | ||
416 | redist->redist = (type == DEFAULT_ROUTE) ? originate_type : 1; | |
417 | redist->metric = metric; | |
418 | isis_redist_routemap_set(redist, routemap); | |
419 | ||
420 | if (!area->ext_reach[protocol][level - 1]) { | |
421 | area->ext_reach[protocol][level - 1] = | |
422 | route_table_init_with_delegate( | |
423 | &isis_redist_rt_delegate); | |
424 | } | |
425 | ||
426 | for (i = 0; i < REDIST_PROTOCOL_COUNT; i++) | |
427 | if (!area->isis->ext_info[i]) { | |
428 | area->isis->ext_info[i] = | |
429 | route_table_init_with_delegate( | |
430 | &isis_redist_rt_delegate); | |
431 | } | |
432 | ||
433 | isis_redist_update_zebra_subscriptions(area->isis); | |
434 | ||
435 | if (type == DEFAULT_ROUTE && originate_type == DEFAULT_ORIGINATE_ALWAYS) | |
436 | isis_redist_ensure_default(area->isis, family); | |
437 | ||
438 | ei_table = get_ext_info(area->isis, family); | |
439 | for (rn = route_top(ei_table); rn; rn = route_next(rn)) { | |
440 | if (!rn->info) | |
441 | continue; | |
442 | info = rn->info; | |
443 | ||
444 | if (type == DEFAULT_ROUTE) { | |
f229873a | 445 | if (!is_default_prefix(&rn->p)) |
d62a17ae | 446 | continue; |
447 | } else { | |
448 | if (info->origin != type) | |
449 | continue; | |
450 | } | |
451 | ||
452 | isis_redist_update_ext_reach(area, level, redist, &rn->p, info); | |
453 | } | |
f3ccedaa CF |
454 | } |
455 | ||
d62a17ae | 456 | static void isis_redist_unset(struct isis_area *area, int level, int family, |
457 | int type) | |
f3ccedaa | 458 | { |
d62a17ae | 459 | struct isis_redist *redist = |
460 | get_redist_settings(area, family, type, level); | |
461 | struct route_table *er_table = get_ext_reach(area, family, level); | |
462 | struct route_node *rn; | |
463 | struct isis_ext_info *info; | |
464 | ||
465 | if (!redist->redist) | |
466 | return; | |
467 | ||
468 | redist->redist = 0; | |
469 | if (!er_table) { | |
470 | zlog_warn("%s: External reachability table uninitialized.", | |
471 | __func__); | |
472 | return; | |
473 | } | |
474 | ||
475 | for (rn = route_top(er_table); rn; rn = route_next(rn)) { | |
476 | if (!rn->info) | |
477 | continue; | |
478 | info = rn->info; | |
479 | ||
480 | if (type == DEFAULT_ROUTE) { | |
f229873a | 481 | if (!is_default_prefix(&rn->p)) |
d62a17ae | 482 | continue; |
483 | } else { | |
484 | if (info->origin != type) | |
485 | continue; | |
486 | } | |
487 | ||
488 | XFREE(MTYPE_ISIS_EXT_INFO, rn->info); | |
489 | route_unlock_node(rn); | |
490 | } | |
491 | ||
492 | lsp_regenerate_schedule(area, level, 0); | |
493 | isis_redist_update_zebra_subscriptions(area->isis); | |
f3ccedaa CF |
494 | } |
495 | ||
d62a17ae | 496 | void isis_redist_area_finish(struct isis_area *area) |
f3ccedaa | 497 | { |
d62a17ae | 498 | int protocol; |
499 | int level; | |
500 | int type; | |
501 | ||
502 | for (protocol = 0; protocol < REDIST_PROTOCOL_COUNT; protocol++) | |
503 | for (level = 0; level < ISIS_LEVELS; level++) { | |
504 | for (type = 0; type < ZEBRA_ROUTE_MAX + 1; type++) { | |
505 | struct isis_redist *redist; | |
506 | ||
507 | redist = &area->redist_settings[protocol][type] | |
508 | [level]; | |
509 | redist->redist = 0; | |
510 | if (redist->map_name) | |
511 | XFREE(MTYPE_ISIS, redist->map_name); | |
512 | } | |
513 | route_table_finish(area->ext_reach[protocol][level]); | |
514 | } | |
515 | ||
516 | isis_redist_update_zebra_subscriptions(area->isis); | |
f3ccedaa CF |
517 | } |
518 | ||
49d41a26 DS |
519 | DEFUN (isis_redistribute, |
520 | isis_redistribute_cmd, | |
cd35442a | 521 | "redistribute <ipv4|ipv6> " FRR_REDIST_STR_ISISD " <level-1|level-2> [<metric (0-16777215)|route-map WORD>]", |
49d41a26 DS |
522 | REDIST_STR |
523 | "Redistribute IPv4 routes\n" | |
524 | "Redistribute IPv6 routes\n" | |
ab0181ee | 525 | FRR_REDIST_HELP_STR_ISISD |
49d41a26 DS |
526 | "Redistribute into level-1\n" |
527 | "Redistribute into level-2\n" | |
528 | "Metric for redistributed routes\n" | |
529 | "ISIS default metric\n" | |
530 | "Route map reference\n" | |
531 | "Pointer to route-map entries\n") | |
f3ccedaa | 532 | { |
d62a17ae | 533 | int idx_afi = 1; |
534 | int idx_protocol = 2; | |
535 | int idx_level = 3; | |
536 | int idx_metric_rmap = 4; | |
537 | VTY_DECLVAR_CONTEXT(isis_area, area); | |
538 | int family; | |
539 | int afi; | |
540 | int type; | |
541 | int level; | |
8cfc8c5c | 542 | unsigned long metric = 0; |
d62a17ae | 543 | const char *routemap = NULL; |
544 | ||
545 | family = str2family(argv[idx_afi]->text); | |
546 | if (family < 0) | |
547 | return CMD_WARNING_CONFIG_FAILED; | |
548 | ||
549 | afi = family2afi(family); | |
550 | if (!afi) | |
551 | return CMD_WARNING_CONFIG_FAILED; | |
552 | ||
553 | type = proto_redistnum(afi, argv[idx_protocol]->text); | |
554 | if (type < 0) | |
555 | return CMD_WARNING_CONFIG_FAILED; | |
556 | ||
557 | if (!strcmp("level-1", argv[idx_level]->arg)) | |
558 | level = 1; | |
559 | else if (!strcmp("level-2", argv[idx_level]->arg)) | |
560 | level = 2; | |
561 | else | |
562 | return CMD_WARNING_CONFIG_FAILED; | |
563 | ||
564 | if ((area->is_type & level) != level) { | |
565 | vty_out(vty, "Node is not a level-%d IS\n", level); | |
566 | return CMD_WARNING_CONFIG_FAILED; | |
567 | } | |
568 | ||
d62a17ae | 569 | if (argc > idx_metric_rmap + 1) { |
570 | if (argv[idx_metric_rmap + 1]->arg[0] == '\0') | |
571 | return CMD_WARNING_CONFIG_FAILED; | |
572 | ||
573 | if (strmatch(argv[idx_metric_rmap]->text, "metric")) { | |
574 | char *endp; | |
575 | metric = strtoul(argv[idx_metric_rmap + 1]->arg, &endp, | |
576 | 10); | |
577 | ||
578 | if (*endp != '\0') | |
579 | return CMD_WARNING_CONFIG_FAILED; | |
580 | } else { | |
581 | routemap = argv[idx_metric_rmap + 1]->arg; | |
582 | } | |
583 | } | |
584 | ||
585 | isis_redist_set(area, level, family, type, metric, routemap, 0); | |
586 | return 0; | |
f3ccedaa CF |
587 | } |
588 | ||
49d41a26 DS |
589 | DEFUN (no_isis_redistribute, |
590 | no_isis_redistribute_cmd, | |
cd35442a | 591 | "no redistribute <ipv4|ipv6> " FRR_REDIST_STR_ISISD " <level-1|level-2>", |
49d41a26 DS |
592 | NO_STR |
593 | REDIST_STR | |
594 | "Redistribute IPv4 routes\n" | |
595 | "Redistribute IPv6 routes\n" | |
ab0181ee | 596 | FRR_REDIST_HELP_STR_ISISD |
49d41a26 DS |
597 | "Redistribute into level-1\n" |
598 | "Redistribute into level-2\n") | |
f3ccedaa | 599 | { |
d62a17ae | 600 | int idx_afi = 2; |
601 | int idx_protocol = 3; | |
602 | int idx_level = 4; | |
603 | VTY_DECLVAR_CONTEXT(isis_area, area); | |
604 | int type; | |
605 | int level; | |
606 | int family; | |
607 | int afi; | |
608 | ||
609 | family = str2family(argv[idx_afi]->arg); | |
610 | if (family < 0) | |
611 | return CMD_WARNING_CONFIG_FAILED; | |
612 | ||
613 | afi = family2afi(family); | |
614 | if (!afi) | |
615 | return CMD_WARNING_CONFIG_FAILED; | |
616 | ||
617 | type = proto_redistnum(afi, argv[idx_protocol]->text); | |
618 | if (type < 0) | |
619 | return CMD_WARNING_CONFIG_FAILED; | |
620 | ||
621 | level = strmatch("level-1", argv[idx_level]->text) ? 1 : 2; | |
622 | ||
623 | isis_redist_unset(area, level, family, type); | |
624 | return 0; | |
f3ccedaa CF |
625 | } |
626 | ||
49d41a26 DS |
627 | DEFUN (isis_default_originate, |
628 | isis_default_originate_cmd, | |
cd35442a | 629 | "default-information originate <ipv4|ipv6> <level-1|level-2> [always] [<metric (0-16777215)|route-map WORD>]", |
49d41a26 DS |
630 | "Control distribution of default information\n" |
631 | "Distribute a default route\n" | |
632 | "Distribute default route for IPv4\n" | |
633 | "Distribute default route for IPv6\n" | |
634 | "Distribute default route into level-1\n" | |
635 | "Distribute default route into level-2\n" | |
636 | "Always advertise default route\n" | |
637 | "Metric for default route\n" | |
638 | "ISIS default metric\n" | |
639 | "Route map reference\n" | |
640 | "Pointer to route-map entries\n") | |
f3ccedaa | 641 | { |
d62a17ae | 642 | int idx_afi = 2; |
643 | int idx_level = 3; | |
644 | int idx_always = 4; | |
645 | int idx_metric_rmap = 4; | |
646 | VTY_DECLVAR_CONTEXT(isis_area, area); | |
647 | int family; | |
648 | int originate_type = DEFAULT_ORIGINATE; | |
649 | int level; | |
8cfc8c5c | 650 | unsigned long metric = 0; |
d62a17ae | 651 | const char *routemap = NULL; |
652 | ||
653 | family = str2family(argv[idx_afi]->text); | |
654 | if (family < 0) | |
655 | return CMD_WARNING_CONFIG_FAILED; | |
656 | ||
657 | level = strmatch("level-1", argv[idx_level]->text) ? 1 : 2; | |
658 | ||
659 | if ((area->is_type & level) != level) { | |
660 | vty_out(vty, "Node is not a level-%d IS\n", level); | |
661 | return CMD_WARNING_CONFIG_FAILED; | |
662 | } | |
663 | ||
664 | if (argc > idx_always && strmatch(argv[idx_always]->text, "always")) { | |
665 | originate_type = DEFAULT_ORIGINATE_ALWAYS; | |
666 | idx_metric_rmap++; | |
667 | } | |
668 | ||
669 | if (argc > idx_metric_rmap) { | |
670 | if (strmatch(argv[idx_metric_rmap]->text, "metric")) | |
671 | metric = strtoul(argv[idx_metric_rmap + 1]->arg, NULL, | |
672 | 10); | |
673 | else | |
674 | routemap = argv[idx_metric_rmap + 1]->arg; | |
675 | } | |
676 | ||
677 | if (family == AF_INET6 && originate_type != DEFAULT_ORIGINATE_ALWAYS) { | |
678 | vty_out(vty, | |
679 | "Zebra doesn't implement default-originate for IPv6 yet\n"); | |
680 | vty_out(vty, | |
681 | "so use with care or use default-originate always.\n"); | |
682 | } | |
683 | ||
684 | isis_redist_set(area, level, family, DEFAULT_ROUTE, metric, routemap, | |
685 | originate_type); | |
686 | return 0; | |
f3ccedaa CF |
687 | } |
688 | ||
49d41a26 DS |
689 | DEFUN (no_isis_default_originate, |
690 | no_isis_default_originate_cmd, | |
6147e2c6 | 691 | "no default-information originate <ipv4|ipv6> <level-1|level-2>", |
49d41a26 DS |
692 | NO_STR |
693 | "Control distribution of default information\n" | |
694 | "Distribute a default route\n" | |
695 | "Distribute default route for IPv4\n" | |
696 | "Distribute default route for IPv6\n" | |
697 | "Distribute default route into level-1\n" | |
698 | "Distribute default route into level-2\n") | |
f3ccedaa | 699 | { |
d62a17ae | 700 | int idx_afi = 3; |
701 | int idx_level = 4; | |
702 | VTY_DECLVAR_CONTEXT(isis_area, area); | |
703 | int family; | |
704 | int level; | |
705 | ||
706 | family = str2family(argv[idx_afi]->text); | |
707 | if (family < 0) | |
708 | return CMD_WARNING_CONFIG_FAILED; | |
709 | ||
710 | if (strmatch("level-1", argv[idx_level]->text)) | |
711 | level = 1; | |
712 | else if (strmatch("level-2", argv[idx_level]->text)) | |
713 | level = 2; | |
714 | else | |
715 | return CMD_WARNING_CONFIG_FAILED; | |
716 | ||
717 | isis_redist_unset(area, level, family, DEFAULT_ROUTE); | |
718 | return 0; | |
f3ccedaa CF |
719 | } |
720 | ||
d62a17ae | 721 | int isis_redist_config_write(struct vty *vty, struct isis_area *area, |
722 | int family) | |
f3ccedaa | 723 | { |
d62a17ae | 724 | int type; |
725 | int level; | |
726 | int write = 0; | |
727 | struct isis_redist *redist; | |
728 | const char *family_str; | |
729 | ||
730 | if (family == AF_INET) | |
731 | family_str = "ipv4"; | |
732 | else if (family == AF_INET6) | |
733 | family_str = "ipv6"; | |
734 | else | |
735 | return 0; | |
736 | ||
737 | for (type = 0; type < ZEBRA_ROUTE_MAX; type++) { | |
738 | if (type == ZEBRA_ROUTE_ISIS) | |
739 | continue; | |
740 | ||
741 | for (level = 1; level <= ISIS_LEVELS; level++) { | |
742 | redist = get_redist_settings(area, family, type, level); | |
743 | if (!redist->redist) | |
744 | continue; | |
745 | vty_out(vty, " redistribute %s %s level-%d", family_str, | |
746 | zebra_route_string(type), level); | |
8cfc8c5c | 747 | if (redist->metric) |
d62a17ae | 748 | vty_out(vty, " metric %u", redist->metric); |
749 | if (redist->map_name) | |
750 | vty_out(vty, " route-map %s", redist->map_name); | |
751 | vty_out(vty, "\n"); | |
752 | write++; | |
753 | } | |
754 | } | |
755 | ||
756 | for (level = 1; level <= ISIS_LEVELS; level++) { | |
757 | redist = | |
758 | get_redist_settings(area, family, DEFAULT_ROUTE, level); | |
759 | if (!redist->redist) | |
760 | continue; | |
761 | vty_out(vty, " default-information originate %s level-%d", | |
762 | family_str, level); | |
763 | if (redist->redist == DEFAULT_ORIGINATE_ALWAYS) | |
764 | vty_out(vty, " always"); | |
8cfc8c5c | 765 | if (redist->metric) |
d62a17ae | 766 | vty_out(vty, " metric %u", redist->metric); |
767 | if (redist->map_name) | |
768 | vty_out(vty, " route-map %s", redist->map_name); | |
769 | vty_out(vty, "\n"); | |
770 | write++; | |
771 | } | |
772 | ||
773 | return write; | |
f3ccedaa CF |
774 | } |
775 | ||
d62a17ae | 776 | void isis_redist_init(void) |
f3ccedaa | 777 | { |
d62a17ae | 778 | install_element(ISIS_NODE, &isis_redistribute_cmd); |
779 | install_element(ISIS_NODE, &no_isis_redistribute_cmd); | |
780 | install_element(ISIS_NODE, &isis_default_originate_cmd); | |
781 | install_element(ISIS_NODE, &no_isis_default_originate_cmd); | |
f3ccedaa | 782 | } |