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interface-ip: Re-enable iif lo policy rules after main table lookup
[project/netifd.git] / interface-ip.c
1 /*
2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2012 Steven Barth <steven@midlink.org>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15 #include <string.h>
16 #include <stdlib.h>
17 #include <stdio.h>
18
19 #include <limits.h>
20 #include <arpa/inet.h>
21 #include <netinet/in.h>
22
23 #include "netifd.h"
24 #include "device.h"
25 #include "interface.h"
26 #include "interface-ip.h"
27 #include "proto.h"
28 #include "ubus.h"
29 #include "system.h"
30
31 enum {
32 ROUTE_INTERFACE,
33 ROUTE_TARGET,
34 ROUTE_MASK,
35 ROUTE_GATEWAY,
36 ROUTE_METRIC,
37 ROUTE_MTU,
38 ROUTE_VALID,
39 ROUTE_TABLE,
40 ROUTE_SOURCE,
41 ROUTE_ONLINK,
42 ROUTE_TYPE,
43 __ROUTE_MAX
44 };
45
46 static const struct blobmsg_policy route_attr[__ROUTE_MAX] = {
47 [ROUTE_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
48 [ROUTE_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
49 [ROUTE_MASK] = { .name = "netmask", .type = BLOBMSG_TYPE_STRING },
50 [ROUTE_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
51 [ROUTE_METRIC] = { .name = "metric", .type = BLOBMSG_TYPE_INT32 },
52 [ROUTE_MTU] = { .name = "mtu", .type = BLOBMSG_TYPE_INT32 },
53 [ROUTE_TABLE] = { .name = "table", .type = BLOBMSG_TYPE_STRING },
54 [ROUTE_VALID] = { .name = "valid", .type = BLOBMSG_TYPE_INT32 },
55 [ROUTE_SOURCE] = { .name = "source", .type = BLOBMSG_TYPE_STRING },
56 [ROUTE_ONLINK] = { .name = "onlink", .type = BLOBMSG_TYPE_BOOL },
57 [ROUTE_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING }
58 };
59
60 const struct uci_blob_param_list route_attr_list = {
61 .n_params = __ROUTE_MAX,
62 .params = route_attr,
63 };
64
65
66 struct list_head prefixes = LIST_HEAD_INIT(prefixes);
67 static struct device_prefix *ula_prefix = NULL;
68 static struct uloop_timeout valid_until_timeout;
69
70
71 static void
72 clear_if_addr(union if_addr *a, int mask)
73 {
74 int m_bytes = (mask + 7) / 8;
75 uint8_t m_clear = (1 << (m_bytes * 8 - mask)) - 1;
76 uint8_t *p = (uint8_t *) a;
77
78 if (m_bytes < sizeof(*a))
79 memset(p + m_bytes, 0, sizeof(*a) - m_bytes);
80
81 p[m_bytes - 1] &= ~m_clear;
82 }
83
84 static bool
85 match_if_addr(union if_addr *a1, union if_addr *a2, int mask)
86 {
87 union if_addr *p1, *p2;
88
89 p1 = alloca(sizeof(*a1));
90 p2 = alloca(sizeof(*a2));
91
92 memcpy(p1, a1, sizeof(*a1));
93 clear_if_addr(p1, mask);
94 memcpy(p2, a2, sizeof(*a2));
95 clear_if_addr(p2, mask);
96
97 return !memcmp(p1, p2, sizeof(*p1));
98 }
99
100 static int set_ip_source_policy(bool add, bool v6, unsigned int priority,
101 const union if_addr *addr, uint8_t mask, unsigned int table,
102 struct interface *in_iface, const char *action)
103 {
104 struct iprule rule = {
105 .flags = IPRULE_PRIORITY,
106 .priority = priority
107 };
108
109 if (addr) {
110 rule.flags |= IPRULE_SRC;
111 rule.src_addr = *addr;
112 rule.src_mask = mask;
113 }
114
115 if (table) {
116 rule.flags |= IPRULE_LOOKUP;
117 rule.lookup = table;
118
119 if (!rule.lookup)
120 return 0;
121 } else if (action) {
122 rule.flags |= IPRULE_ACTION;
123 system_resolve_iprule_action(action, &rule.action);
124 }
125
126 if (in_iface && in_iface->l3_dev.dev) {
127 rule.flags |= IPRULE_IN;
128 strcpy(rule.in_dev, in_iface->l3_dev.dev->ifname);
129 }
130
131 rule.flags |= (v6) ? IPRULE_INET6 : IPRULE_INET4;
132
133 return (add) ? system_add_iprule(&rule) : system_del_iprule(&rule);
134 }
135
136 static int set_ip_lo_policy(bool add, bool v6, struct interface *iface)
137 {
138 struct iprule rule = {
139 .flags = IPRULE_IN | IPRULE_LOOKUP | IPRULE_PRIORITY,
140 .priority = IPRULE_PRIORITY_NW + iface->l3_dev.dev->ifindex,
141 .lookup = (v6) ? iface->ip6table : iface->ip4table,
142 .in_dev = "lo"
143 };
144
145 if (!rule.lookup)
146 return 0;
147
148 rule.flags |= (v6) ? IPRULE_INET6 : IPRULE_INET4;
149
150 return (add) ? system_add_iprule(&rule) : system_del_iprule(&rule);
151 }
152
153 static bool
154 __find_ip_addr_target(struct interface_ip_settings *ip, union if_addr *a, bool v6)
155 {
156 struct device_addr *addr;
157
158 vlist_for_each_element(&ip->addr, addr, node) {
159 if (!addr->enabled)
160 continue;
161
162 if (v6 != ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET6))
163 continue;
164
165 // Handle offlink addresses correctly
166 unsigned int mask = addr->mask;
167 if ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET6 &&
168 (addr->flags & DEVADDR_OFFLINK))
169 mask = 128;
170
171 if (!match_if_addr(&addr->addr, a, mask))
172 continue;
173
174 return true;
175 }
176
177 return false;
178 }
179
180 static void
181 __find_ip_route_target(struct interface_ip_settings *ip, union if_addr *a,
182 bool v6, struct device_route **res)
183 {
184 struct device_route *route;
185
186 vlist_for_each_element(&ip->route, route, node) {
187 if (!route->enabled)
188 continue;
189
190 if (v6 != ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET6))
191 continue;
192
193 if (!match_if_addr(&route->addr, a, route->mask))
194 continue;
195
196 if (route->flags & DEVROUTE_TABLE)
197 continue;
198
199 if (!*res || route->mask < (*res)->mask)
200 *res = route;
201 }
202 }
203
204 static bool
205 interface_ip_find_addr_target(struct interface *iface, union if_addr *a, bool v6)
206 {
207 return __find_ip_addr_target(&iface->proto_ip, a, v6) ||
208 __find_ip_addr_target(&iface->config_ip, a, v6);
209 }
210
211 static void
212 interface_ip_find_route_target(struct interface *iface, union if_addr *a,
213 bool v6, struct device_route **route)
214 {
215 __find_ip_route_target(&iface->proto_ip, a, v6, route);
216 __find_ip_route_target(&iface->config_ip, a, v6, route);
217 }
218
219 struct interface *
220 interface_ip_add_target_route(union if_addr *addr, bool v6, struct interface *iface)
221 {
222 struct device_route *route, *r_next = NULL;
223 bool defaultroute_target = false;
224 int addrsize = v6 ? sizeof(addr->in6) : sizeof(addr->in);
225
226 route = calloc(1, sizeof(*route));
227 if (!route)
228 return NULL;
229
230 route->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
231 route->mask = v6 ? 128 : 32;
232 if (memcmp(&route->addr, addr, addrsize) == 0)
233 defaultroute_target = true;
234 else
235 memcpy(&route->addr, addr, addrsize);
236
237 if (iface) {
238 /* look for locally addressable target first */
239 if (interface_ip_find_addr_target(iface, addr, v6))
240 goto done;
241
242 /* do not stop at the first route, let the lookup compare
243 * masks to find the best match */
244 interface_ip_find_route_target(iface, addr, v6, &r_next);
245 } else {
246 vlist_for_each_element(&interfaces, iface, node) {
247 /* look for locally addressable target first */
248 if (interface_ip_find_addr_target(iface, addr, v6))
249 goto done;
250
251 /* do not stop at the first route, let the lookup compare
252 * masks to find the best match */
253 interface_ip_find_route_target(iface, addr, v6, &r_next);
254 }
255 }
256
257 if (!r_next) {
258 free(route);
259 return NULL;
260 }
261
262 iface = r_next->iface;
263 memcpy(&route->nexthop, &r_next->nexthop, sizeof(route->nexthop));
264 route->mtu = r_next->mtu;
265 route->metric = r_next->metric;
266 route->table = r_next->table;
267
268 done:
269 route->iface = iface;
270 if (defaultroute_target)
271 free(route);
272 else
273 vlist_add(&iface->host_routes, &route->node, route);
274 return iface;
275 }
276
277 void
278 interface_ip_add_route(struct interface *iface, struct blob_attr *attr, bool v6)
279 {
280 struct interface_ip_settings *ip;
281 struct blob_attr *tb[__ROUTE_MAX], *cur;
282 struct device_route *route;
283 int af = v6 ? AF_INET6 : AF_INET;
284 bool is_proto_route = !!iface;
285
286 blobmsg_parse(route_attr, __ROUTE_MAX, tb, blobmsg_data(attr), blobmsg_data_len(attr));
287
288 if (!iface) {
289 if ((cur = tb[ROUTE_INTERFACE]) == NULL)
290 return;
291
292 iface = vlist_find(&interfaces, blobmsg_data(cur), iface, node);
293 if (!iface)
294 return;
295
296 ip = &iface->config_ip;
297 } else {
298 ip = &iface->proto_ip;
299 }
300
301 route = calloc(1, sizeof(*route));
302 if (!route)
303 return;
304
305 route->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
306 route->mask = v6 ? 128 : 32;
307 if ((cur = tb[ROUTE_MASK]) != NULL) {
308 route->mask = parse_netmask_string(blobmsg_data(cur), v6);
309 if (route->mask > (v6 ? 128 : 32))
310 goto error;
311 }
312
313 if ((cur = tb[ROUTE_TARGET]) != NULL) {
314 if (!parse_ip_and_netmask(af, blobmsg_data(cur), &route->addr, &route->mask)) {
315 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur));
316 goto error;
317 }
318 }
319
320 if ((cur = tb[ROUTE_GATEWAY]) != NULL) {
321 if (!inet_pton(af, blobmsg_data(cur), &route->nexthop)) {
322 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur));
323 goto error;
324 }
325 }
326
327 if ((cur = tb[ROUTE_METRIC]) != NULL) {
328 route->metric = blobmsg_get_u32(cur);
329 route->flags |= DEVROUTE_METRIC;
330 } else
331 route->metric = iface->metric;
332
333 if ((cur = tb[ROUTE_MTU]) != NULL) {
334 route->mtu = blobmsg_get_u32(cur);
335 route->flags |= DEVROUTE_MTU;
336 }
337
338 // Use source-based routing
339 if ((cur = tb[ROUTE_SOURCE]) != NULL) {
340 char *saveptr, *source = alloca(blobmsg_data_len(cur));
341 memcpy(source, blobmsg_data(cur), blobmsg_data_len(cur));
342
343 const char *addr = strtok_r(source, "/", &saveptr);
344 const char *mask = strtok_r(NULL, "/", &saveptr);
345
346 if (!addr || inet_pton(af, addr, &route->source) < 1) {
347 DPRINTF("Failed to parse route source: %s\n", addr);
348 goto error;
349 }
350
351 route->sourcemask = (mask) ? atoi(mask) : ((af == AF_INET6) ? 128 : 32);
352 }
353
354 if ((cur = tb[ROUTE_ONLINK]) != NULL && blobmsg_get_bool(cur))
355 route->flags |= DEVROUTE_ONLINK;
356
357 if (is_proto_route) {
358 route->table = (v6) ? iface->ip6table : iface->ip4table;
359 route->flags |= DEVROUTE_SRCTABLE;
360 }
361
362 if ((cur = tb[ROUTE_TABLE]) != NULL) {
363 if (!system_resolve_rt_table(blobmsg_data(cur), &route->table)) {
364 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
365 goto error;
366 }
367
368 /* only set the table flag if not using the main (default) table */
369 if (system_is_default_rt_table(route->table))
370 route->table = 0;
371
372 if (route->table)
373 route->flags |= DEVROUTE_TABLE;
374 }
375
376 if ((cur = tb[ROUTE_VALID]) != NULL) {
377 int64_t valid = blobmsg_get_u32(cur);
378 int64_t valid_until = valid + (int64_t)system_get_rtime();
379 if (valid_until <= LONG_MAX && valid != 0xffffffffLL) // Catch overflow
380 route->valid_until = valid_until;
381 }
382
383 if ((cur = tb[ROUTE_TYPE]) != NULL) {
384 if (!system_resolve_rt_type(blobmsg_data(cur), &route->type)) {
385 DPRINTF("Failed to resolve routing type: %s\n", (char *) blobmsg_data(cur));
386 goto error;
387 }
388 route->flags |= DEVROUTE_TYPE;
389 }
390
391 vlist_add(&ip->route, &route->node, route);
392 return;
393
394 error:
395 free(route);
396 }
397
398 static int
399 addr_cmp(const void *k1, const void *k2, void *ptr)
400 {
401 return memcmp(k1, k2, sizeof(struct device_addr) -
402 offsetof(struct device_addr, flags));
403 }
404
405 static int
406 route_cmp(const void *k1, const void *k2, void *ptr)
407 {
408 const struct device_route *r1 = k1, *r2 = k2;
409
410 if (r1->mask != r2->mask)
411 return r2->mask - r1->mask;
412
413 if (r1->metric != r2->metric)
414 return r1->metric - r2->metric;
415
416 if (r1->flags != r2->flags)
417 return r2->flags - r1->flags;
418
419 if (r1->sourcemask != r2->sourcemask)
420 return r1->sourcemask - r2->sourcemask;
421
422 if (r1->table != r2->table)
423 return r1->table - r2->table;
424
425 int maskcmp = memcmp(&r1->source, &r2->source, sizeof(r1->source));
426 if (maskcmp)
427 return maskcmp;
428
429 return memcmp(&r1->addr, &r2->addr, sizeof(r1->addr));
430 }
431
432 static int
433 prefix_cmp(const void *k1, const void *k2, void *ptr)
434 {
435 return memcmp(k1, k2, offsetof(struct device_prefix, pclass) -
436 offsetof(struct device_prefix, addr));
437 }
438
439 static void
440 interface_handle_subnet_route(struct interface *iface, struct device_addr *addr, bool add)
441 {
442 struct device *dev = iface->l3_dev.dev;
443 struct device_route route;
444
445 if (addr->flags & DEVADDR_OFFLINK)
446 return;
447
448 memset(&route, 0, sizeof(route));
449 route.iface = iface;
450 route.flags = addr->flags;
451 route.mask = addr->mask;
452 memcpy(&route.addr, &addr->addr, sizeof(route.addr));
453 clear_if_addr(&route.addr, route.mask);
454
455 if (add) {
456 route.flags |= DEVADDR_KERNEL;
457 system_del_route(dev, &route);
458
459 route.flags &= ~DEVADDR_KERNEL;
460 route.metric = iface->metric;
461 system_add_route(dev, &route);
462 } else {
463 system_del_route(dev, &route);
464 }
465 }
466
467 static void
468 interface_update_proto_addr(struct vlist_tree *tree,
469 struct vlist_node *node_new,
470 struct vlist_node *node_old)
471 {
472 struct interface_ip_settings *ip;
473 struct interface *iface;
474 struct device *dev;
475 struct device_addr *a_new = NULL, *a_old = NULL;
476 bool replace = false;
477 bool keep = false;
478 bool v6 = false;
479
480 ip = container_of(tree, struct interface_ip_settings, addr);
481 iface = ip->iface;
482 dev = iface->l3_dev.dev;
483
484 if (!node_new || !node_old)
485 iface->updated |= IUF_ADDRESS;
486
487 if (node_new) {
488 a_new = container_of(node_new, struct device_addr, node);
489
490 if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET4 &&
491 !a_new->broadcast) {
492
493 /* /31 and /32 addressing need 255.255.255.255
494 * as broadcast address. */
495 if (a_new->mask >= 31) {
496 a_new->broadcast = (uint32_t) ~0;
497 } else {
498 uint32_t mask = ~0;
499 uint32_t *a = (uint32_t *) &a_new->addr;
500
501 mask >>= a_new->mask;
502 a_new->broadcast = *a | htonl(mask);
503 }
504 }
505 }
506
507 if (node_old)
508 a_old = container_of(node_old, struct device_addr, node);
509
510 if (a_new && a_old) {
511 keep = true;
512
513 if (a_old->flags != a_new->flags || a_old->failed)
514 keep = false;
515
516 if (a_old->valid_until != a_new->valid_until ||
517 a_old->preferred_until != a_new->preferred_until)
518 replace = true;
519
520 if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET4 &&
521 a_new->broadcast != a_old->broadcast)
522 keep = false;
523 }
524
525 if (node_old) {
526 if (a_old->enabled && !keep) {
527 if ((a_old->flags & DEVADDR_FAMILY) == DEVADDR_INET6)
528 v6 = true;
529
530 //This is needed for source routing to work correctly. If a device
531 //has two connections to a network using the same subnet, adding
532 //only the network-rule will cause packets to be routed through the
533 //first matching network (source IP matches both masks).
534 if (a_old->policy_table) {
535 set_ip_source_policy(false, v6, IPRULE_PRIORITY_ADDR, &a_old->addr,
536 (v6) ? 128 : 32, a_old->policy_table, NULL, NULL);
537
538 if (a_old->mask != ((v6) ? 128 : 32))
539 set_ip_source_policy(false, v6, IPRULE_PRIORITY_NW, &a_old->addr,
540 a_old->mask, a_old->policy_table, NULL, NULL);
541 }
542
543 if (!(a_old->flags & DEVADDR_EXTERNAL)) {
544 interface_handle_subnet_route(iface, a_old, false);
545 system_del_address(dev, a_old);
546 }
547 }
548 free(a_old->pclass);
549 free(a_old);
550 }
551
552 if (node_new) {
553 a_new->enabled = true;
554
555 if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET6)
556 v6 = true;
557
558 a_new->policy_table = (v6) ? iface->ip6table : iface->ip4table;
559
560 if (!keep || replace) {
561 if (!(a_new->flags & DEVADDR_EXTERNAL)) {
562 if (system_add_address(dev, a_new))
563 a_new->failed = true;
564
565 if (iface->metric)
566 interface_handle_subnet_route(iface, a_new, true);
567 }
568
569 if (!keep) {
570 if (a_new->policy_table) {
571 set_ip_source_policy(true, v6, IPRULE_PRIORITY_ADDR, &a_new->addr,
572 (v6) ? 128 : 32, a_new->policy_table, NULL, NULL);
573
574 if (a_new->mask != ((v6) ? 128 : 32))
575 set_ip_source_policy(true, v6, IPRULE_PRIORITY_NW, &a_new->addr,
576 a_new->mask, a_new->policy_table, NULL, NULL);
577 }
578 }
579 }
580 }
581 }
582
583 static bool
584 enable_route(struct interface_ip_settings *ip, struct device_route *route)
585 {
586 if (ip->no_defaultroute && !route->mask)
587 return false;
588
589 return ip->enabled;
590 }
591
592 static void
593 interface_update_proto_route(struct vlist_tree *tree,
594 struct vlist_node *node_new,
595 struct vlist_node *node_old)
596 {
597 struct interface_ip_settings *ip;
598 struct interface *iface;
599 struct device *dev;
600 struct device_route *route_old, *route_new;
601 bool keep = false;
602
603 ip = container_of(tree, struct interface_ip_settings, route);
604 iface = ip->iface;
605 dev = iface->l3_dev.dev;
606
607 if (!node_new || !node_old)
608 iface->updated |= IUF_ROUTE;
609
610 route_old = container_of(node_old, struct device_route, node);
611 route_new = container_of(node_new, struct device_route, node);
612
613 if (node_old && node_new)
614 keep = !memcmp(&route_old->nexthop, &route_new->nexthop, sizeof(route_old->nexthop)) &&
615 (route_old->mtu == route_new->mtu) && (route_old->type == route_new->type) &&
616 !route_old->failed;
617
618 if (node_old) {
619 if (!(route_old->flags & DEVADDR_EXTERNAL) && route_old->enabled && !keep)
620 system_del_route(dev, route_old);
621
622 free(route_old);
623 }
624
625 if (node_new) {
626 bool _enabled = enable_route(ip, route_new);
627
628 if (!(route_new->flags & DEVADDR_EXTERNAL) && !keep && _enabled)
629 if (system_add_route(dev, route_new))
630 route_new->failed = true;
631
632 route_new->iface = iface;
633 route_new->enabled = _enabled;
634 }
635 }
636
637 static void
638 interface_update_host_route(struct vlist_tree *tree,
639 struct vlist_node *node_new,
640 struct vlist_node *node_old)
641 {
642 struct interface *iface;
643 struct device *dev;
644 struct device_route *route_old, *route_new;
645
646 iface = container_of(tree, struct interface, host_routes);
647 dev = iface->l3_dev.dev;
648
649 route_old = container_of(node_old, struct device_route, node);
650 route_new = container_of(node_new, struct device_route, node);
651
652 if (node_old) {
653 system_del_route(dev, route_old);
654 free(route_old);
655 }
656
657 if (node_new) {
658 if (system_add_route(dev, route_new))
659 route_new->failed = true;
660 }
661 }
662
663 static void
664 random_ifaceid(struct in6_addr *addr)
665 {
666 static bool initialized = false;
667 struct timeval t;
668
669 if (!initialized) {
670 long int seed = 0;
671 gettimeofday(&t, NULL);
672 seed = t.tv_sec ^ t.tv_usec ^ getpid();
673 srand48(seed);
674 initialized = true;
675 }
676 addr->s6_addr32[2] = (uint32_t)mrand48();
677 addr->s6_addr32[3] = (uint32_t)mrand48();
678 }
679
680 static void
681 eui64_ifaceid(struct interface *iface, struct in6_addr *addr)
682 {
683 /* get mac address */
684 uint8_t *macaddr = iface->l3_dev.dev->settings.macaddr;
685 uint8_t *ifaceid = addr->s6_addr + 8;
686 memcpy(ifaceid,macaddr,3);
687 memcpy(ifaceid + 5,macaddr + 3, 3);
688 ifaceid[3] = 0xff;
689 ifaceid[4] = 0xfe;
690 ifaceid[0] ^= 0x02;
691 }
692
693 static void
694 generate_ifaceid(struct interface *iface, struct in6_addr *addr)
695 {
696 /* generate new iface id */
697 switch (iface->assignment_iface_id_selection) {
698 case IFID_FIXED:
699 /* fixed */
700 /* copy host part from assignment_fixed_iface_id */
701 memcpy(addr->s6_addr + 8, iface->assignment_fixed_iface_id.s6_addr + 8, 8);
702 break;
703 case IFID_RANDOM:
704 /* randomize last 64 bits */
705 random_ifaceid(addr);
706 break;
707 case IFID_EUI64:
708 /* eui64 */
709 eui64_ifaceid(iface, addr);
710 break;
711 }
712 }
713
714 static void
715 interface_set_prefix_address(struct device_prefix_assignment *assignment,
716 const struct device_prefix *prefix, struct interface *iface, bool add)
717 {
718 const struct interface *uplink = prefix->iface;
719 if (!iface->l3_dev.dev)
720 return;
721
722 struct device *l3_downlink = iface->l3_dev.dev;
723
724 struct device_addr addr;
725 struct device_route route;
726 memset(&addr, 0, sizeof(addr));
727 memset(&route, 0, sizeof(route));
728
729 if (IN6_IS_ADDR_UNSPECIFIED(&assignment->addr)) {
730 addr.addr.in6 = prefix->addr;
731 addr.addr.in6.s6_addr32[1] |= htonl(assignment->assigned);
732 generate_ifaceid(iface, &addr.addr.in6);
733 assignment->addr = addr.addr.in6;
734 }
735 else
736 addr.addr.in6 = assignment->addr;
737
738 addr.mask = assignment->length;
739 addr.flags = DEVADDR_INET6 | DEVADDR_OFFLINK;
740 addr.preferred_until = prefix->preferred_until;
741 addr.valid_until = prefix->valid_until;
742
743 route.flags = DEVADDR_INET6;
744 route.mask = addr.mask < 64 ? 64 : addr.mask;
745 route.addr = addr.addr;
746 clear_if_addr(&route.addr, route.mask);
747
748 if (!add && assignment->enabled) {
749 time_t now = system_get_rtime();
750 addr.preferred_until = now;
751 if (!addr.valid_until || addr.valid_until - now > 7200)
752 addr.valid_until = now + 7200;
753
754 if (prefix->iface) {
755 if (prefix->iface->ip6table)
756 set_ip_source_policy(false, true, IPRULE_PRIORITY_NW, &addr.addr,
757 addr.mask, prefix->iface->ip6table, iface, NULL);
758
759 set_ip_source_policy(false, true, IPRULE_PRIORITY_REJECT, &addr.addr,
760 addr.mask, 0, iface, "unreachable");
761 }
762
763 system_del_route(l3_downlink, &route);
764 system_add_address(l3_downlink, &addr);
765
766 assignment->enabled = false;
767 } else if (add && (iface->state == IFS_UP || iface->state == IFS_SETUP) &&
768 !system_add_address(l3_downlink, &addr)) {
769
770 if (prefix->iface && !assignment->enabled) {
771 set_ip_source_policy(true, true, IPRULE_PRIORITY_REJECT, &addr.addr,
772 addr.mask, 0, iface, "unreachable");
773
774 if (prefix->iface->ip6table)
775 set_ip_source_policy(true, true, IPRULE_PRIORITY_NW, &addr.addr,
776 addr.mask, prefix->iface->ip6table, iface, NULL);
777 }
778
779 route.metric = iface->metric;
780 system_add_route(l3_downlink, &route);
781
782 if (uplink && uplink->l3_dev.dev && !(l3_downlink->settings.flags & DEV_OPT_MTU6)) {
783 int mtu = system_update_ipv6_mtu(uplink->l3_dev.dev, 0);
784 int mtu_old = system_update_ipv6_mtu(l3_downlink, 0);
785
786 if (mtu > 0 && mtu_old > mtu)
787 system_update_ipv6_mtu(l3_downlink, mtu);
788 }
789
790 assignment->enabled = true;
791 }
792 }
793
794 static bool interface_prefix_assign(struct list_head *list,
795 struct device_prefix_assignment *assign)
796 {
797 int32_t current = 0, asize = (1 << (64 - assign->length)) - 1;
798 struct device_prefix_assignment *c;
799 list_for_each_entry(c, list, head) {
800 if (assign->assigned != -1) {
801 if (assign->assigned >= current && assign->assigned + asize < c->assigned) {
802 list_add_tail(&assign->head, &c->head);
803 return true;
804 }
805 } else if (assign->assigned == -1) {
806 current = (current + asize) & (~asize);
807 if (current + asize < c->assigned) {
808 assign->assigned = current;
809 list_add_tail(&assign->head, &c->head);
810 return true;
811 }
812 }
813 current = (c->assigned + (1 << (64 - c->length)));
814 }
815 return false;
816 }
817
818 static void interface_update_prefix_assignments(struct device_prefix *prefix, bool setup)
819 {
820 struct device_prefix_assignment *c;
821 struct interface *iface;
822
823 // Delete all assignments
824 while (!list_empty(&prefix->assignments)) {
825 c = list_first_entry(&prefix->assignments,
826 struct device_prefix_assignment, head);
827 if ((iface = vlist_find(&interfaces, c->name, iface, node)))
828 interface_set_prefix_address(c, prefix, iface, false);
829 list_del(&c->head);
830 free(c);
831 }
832
833 if (!setup)
834 return;
835
836 // End-of-assignment sentinel
837 c = malloc(sizeof(*c) + 1);
838 c->assigned = 1 << (64 - prefix->length);
839 c->length = 64;
840 c->name[0] = 0;
841 c->addr = in6addr_any;
842 list_add(&c->head, &prefix->assignments);
843
844 // Excluded prefix
845 if (prefix->excl_length > 0) {
846 const char name[] = "!excluded";
847 c = malloc(sizeof(*c) + sizeof(name));
848 c->assigned = ntohl(prefix->excl_addr.s6_addr32[1]) &
849 ((1 << (64 - prefix->length)) - 1);
850 c->length = prefix->excl_length;
851 c->addr = in6addr_any;
852 memcpy(c->name, name, sizeof(name));
853 list_add(&c->head, &prefix->assignments);
854 }
855
856 bool assigned_any = false;
857 struct list_head assign_later = LIST_HEAD_INIT(assign_later);
858 vlist_for_each_element(&interfaces, iface, node) {
859 if (iface->assignment_length < 48 ||
860 iface->assignment_length > 64)
861 continue;
862
863 // Test whether there is a matching class
864 if (!list_empty(&iface->assignment_classes)) {
865 bool found = false;
866
867 struct interface_assignment_class *c;
868 list_for_each_entry(c, &iface->assignment_classes, head) {
869 if (!strcmp(c->name, prefix->pclass)) {
870 found = true;
871 break;
872 }
873 }
874
875 if (!found)
876 continue;
877 }
878
879 size_t namelen = strlen(iface->name) + 1;
880 c = malloc(sizeof(*c) + namelen);
881 c->length = iface->assignment_length;
882 c->assigned = iface->assignment_hint;
883 c->addr = in6addr_any;
884 c->enabled = false;
885 memcpy(c->name, iface->name, namelen);
886
887 // First process all custom assignments, put all others in later-list
888 if (c->assigned == -1 || !interface_prefix_assign(&prefix->assignments, c)) {
889 if (c->assigned != -1) {
890 c->assigned = -1;
891 netifd_log_message(L_WARNING, "Failed to assign requested subprefix "
892 "of size %hhu for %s, trying other\n", c->length, c->name);
893 }
894
895 struct list_head *next = &assign_later;
896 struct device_prefix_assignment *n;
897 list_for_each_entry(n, &assign_later, head) {
898 if (n->length < c->length) {
899 next = &n->head;
900 break;
901 }
902 }
903 list_add_tail(&c->head, next);
904 }
905
906 if (c->assigned != -1)
907 assigned_any = true;
908 }
909
910 // Then try to assign all other + failed custom assignments
911 while (!list_empty(&assign_later)) {
912 c = list_first_entry(&assign_later, struct device_prefix_assignment, head);
913 list_del(&c->head);
914
915 bool assigned = false;
916 do {
917 assigned = interface_prefix_assign(&prefix->assignments, c);
918 } while (!assigned && ++c->length <= 64);
919
920 if (!assigned) {
921 netifd_log_message(L_WARNING, "Failed to assign subprefix "
922 "of size %hhu for %s\n", c->length, c->name);
923 free(c);
924 } else {
925 assigned_any = true;
926 }
927 }
928
929 list_for_each_entry(c, &prefix->assignments, head)
930 if ((iface = vlist_find(&interfaces, c->name, iface, node)))
931 interface_set_prefix_address(c, prefix, iface, true);
932
933 if (!assigned_any)
934 netifd_log_message(L_WARNING, "You have delegated IPv6-prefixes but haven't assigned them "
935 "to any interface. Did you forget to set option ip6assign on your lan-interfaces?");
936 }
937
938
939 void interface_refresh_assignments(bool hint)
940 {
941 static bool refresh = false;
942 if (!hint && refresh) {
943 struct device_prefix *p;
944 list_for_each_entry(p, &prefixes, head)
945 interface_update_prefix_assignments(p, true);
946 }
947 refresh = hint;
948 }
949
950
951 static void
952 interface_update_prefix(struct vlist_tree *tree,
953 struct vlist_node *node_new,
954 struct vlist_node *node_old)
955 {
956 struct device_prefix *prefix_old, *prefix_new;
957 prefix_old = container_of(node_old, struct device_prefix, node);
958 prefix_new = container_of(node_new, struct device_prefix, node);
959
960 struct interface_ip_settings *ip = container_of(tree, struct interface_ip_settings, prefix);
961 if (tree && (!node_new || !node_old))
962 ip->iface->updated |= IUF_PREFIX;
963
964 struct device_route route;
965 memset(&route, 0, sizeof(route));
966 route.flags = DEVADDR_INET6;
967 route.metric = INT32_MAX;
968 route.mask = (node_new) ? prefix_new->length : prefix_old->length;
969 route.addr.in6 = (node_new) ? prefix_new->addr : prefix_old->addr;
970
971
972 struct device_prefix_assignment *c;
973 struct interface *iface;
974
975 if (node_old && node_new) {
976 // Move assignments and refresh addresses to update valid times
977 list_splice(&prefix_old->assignments, &prefix_new->assignments);
978
979 list_for_each_entry(c, &prefix_new->assignments, head)
980 if ((iface = vlist_find(&interfaces, c->name, iface, node)))
981 interface_set_prefix_address(c, prefix_new, iface, true);
982 } else if (node_new) {
983 // Set null-route to avoid routing loops
984 system_add_route(NULL, &route);
985
986 if (!prefix_new->iface || !prefix_new->iface->proto_ip.no_delegation)
987 interface_update_prefix_assignments(prefix_new, true);
988 } else if (node_old) {
989 // Remove null-route
990 interface_update_prefix_assignments(prefix_old, false);
991 system_del_route(NULL, &route);
992 }
993
994 if (node_old) {
995 if (prefix_old->head.next)
996 list_del(&prefix_old->head);
997 free(prefix_old);
998 }
999
1000 if (node_new && (!prefix_new->iface || !prefix_new->iface->proto_ip.no_delegation))
1001 list_add(&prefix_new->head, &prefixes);
1002
1003 }
1004
1005 struct device_prefix*
1006 interface_ip_add_device_prefix(struct interface *iface, struct in6_addr *addr,
1007 uint8_t length, time_t valid_until, time_t preferred_until,
1008 struct in6_addr *excl_addr, uint8_t excl_length, const char *pclass)
1009 {
1010 if (!pclass)
1011 pclass = (iface) ? iface->name : "local";
1012
1013 struct device_prefix *prefix = calloc(1, sizeof(*prefix) + strlen(pclass) + 1);
1014 prefix->length = length;
1015 prefix->addr = *addr;
1016 prefix->preferred_until = preferred_until;
1017 prefix->valid_until = valid_until;
1018 prefix->iface = iface;
1019 INIT_LIST_HEAD(&prefix->assignments);
1020
1021 if (excl_addr) {
1022 prefix->excl_addr = *excl_addr;
1023 prefix->excl_length = excl_length;
1024 }
1025
1026 strcpy(prefix->pclass, pclass);
1027
1028 if (iface)
1029 vlist_add(&iface->proto_ip.prefix, &prefix->node, &prefix->addr);
1030 else
1031 interface_update_prefix(NULL, &prefix->node, NULL);
1032
1033 return prefix;
1034 }
1035
1036 void
1037 interface_ip_set_ula_prefix(const char *prefix)
1038 {
1039 char buf[INET6_ADDRSTRLEN + 4] = {0}, *saveptr;
1040 if (prefix)
1041 strncpy(buf, prefix, sizeof(buf) - 1);
1042 char *prefixaddr = strtok_r(buf, "/", &saveptr);
1043
1044 struct in6_addr addr;
1045 if (!prefixaddr || inet_pton(AF_INET6, prefixaddr, &addr) < 1) {
1046 if (ula_prefix) {
1047 interface_update_prefix(NULL, NULL, &ula_prefix->node);
1048 ula_prefix = NULL;
1049 }
1050 return;
1051 }
1052
1053 int length;
1054 char *prefixlen = strtok_r(NULL, ",", &saveptr);
1055 if (!prefixlen || (length = atoi(prefixlen)) < 1 || length > 64)
1056 return;
1057
1058 if (!ula_prefix || !IN6_ARE_ADDR_EQUAL(&addr, &ula_prefix->addr) ||
1059 ula_prefix->length != length) {
1060 if (ula_prefix)
1061 interface_update_prefix(NULL, NULL, &ula_prefix->node);
1062
1063 ula_prefix = interface_ip_add_device_prefix(NULL, &addr, length,
1064 0, 0, NULL, 0, NULL);
1065 }
1066 }
1067
1068 void
1069 interface_add_dns_server(struct interface_ip_settings *ip, const char *str)
1070 {
1071 struct dns_server *s;
1072
1073 s = calloc(1, sizeof(*s));
1074 if (!s)
1075 return;
1076
1077 s->af = AF_INET;
1078 if (inet_pton(s->af, str, &s->addr.in))
1079 goto add;
1080
1081 s->af = AF_INET6;
1082 if (inet_pton(s->af, str, &s->addr.in))
1083 goto add;
1084
1085 free(s);
1086 return;
1087
1088 add:
1089 D(INTERFACE, "Add IPv%c DNS server: %s\n",
1090 s->af == AF_INET6 ? '6' : '4', str);
1091 vlist_simple_add(&ip->dns_servers, &s->node);
1092 }
1093
1094 void
1095 interface_add_dns_server_list(struct interface_ip_settings *ip, struct blob_attr *list)
1096 {
1097 struct blob_attr *cur;
1098 int rem;
1099
1100 blobmsg_for_each_attr(cur, list, rem) {
1101 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
1102 continue;
1103
1104 if (!blobmsg_check_attr(cur, NULL))
1105 continue;
1106
1107 interface_add_dns_server(ip, blobmsg_data(cur));
1108 }
1109 }
1110
1111 static void
1112 interface_add_dns_search_domain(struct interface_ip_settings *ip, const char *str)
1113 {
1114 struct dns_search_domain *s;
1115 int len = strlen(str);
1116
1117 s = calloc(1, sizeof(*s) + len + 1);
1118 if (!s)
1119 return;
1120
1121 D(INTERFACE, "Add DNS search domain: %s\n", str);
1122 memcpy(s->name, str, len);
1123 vlist_simple_add(&ip->dns_search, &s->node);
1124 }
1125
1126 void
1127 interface_add_dns_search_list(struct interface_ip_settings *ip, struct blob_attr *list)
1128 {
1129 struct blob_attr *cur;
1130 int rem;
1131
1132 blobmsg_for_each_attr(cur, list, rem) {
1133 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
1134 continue;
1135
1136 if (!blobmsg_check_attr(cur, NULL))
1137 continue;
1138
1139 interface_add_dns_search_domain(ip, blobmsg_data(cur));
1140 }
1141 }
1142
1143 static void
1144 write_resolv_conf_entries(FILE *f, struct interface_ip_settings *ip, const char *dev)
1145 {
1146 struct dns_server *s;
1147 struct dns_search_domain *d;
1148 const char *str;
1149 char buf[INET6_ADDRSTRLEN];
1150
1151 vlist_simple_for_each_element(&ip->dns_servers, s, node) {
1152 str = inet_ntop(s->af, &s->addr, buf, sizeof(buf));
1153 if (!str)
1154 continue;
1155
1156 if (s->af == AF_INET6 && IN6_IS_ADDR_LINKLOCAL(&s->addr.in6))
1157 fprintf(f, "nameserver %s%%%s\n", str, dev);
1158 else
1159 fprintf(f, "nameserver %s\n", str);
1160 }
1161
1162 vlist_simple_for_each_element(&ip->dns_search, d, node) {
1163 fprintf(f, "search %s\n", d->name);
1164 }
1165 }
1166
1167 void
1168 interface_write_resolv_conf(void)
1169 {
1170 struct interface *iface;
1171 char *path = alloca(strlen(resolv_conf) + 5);
1172 FILE *f;
1173 uint32_t crcold, crcnew;
1174
1175 sprintf(path, "%s.tmp", resolv_conf);
1176 unlink(path);
1177 f = fopen(path, "w+");
1178 if (!f) {
1179 D(INTERFACE, "Failed to open %s for writing\n", path);
1180 return;
1181 }
1182
1183 vlist_for_each_element(&interfaces, iface, node) {
1184 if (iface->state != IFS_UP)
1185 continue;
1186
1187 if (vlist_simple_empty(&iface->proto_ip.dns_search) &&
1188 vlist_simple_empty(&iface->proto_ip.dns_servers) &&
1189 vlist_simple_empty(&iface->config_ip.dns_search) &&
1190 vlist_simple_empty(&iface->config_ip.dns_servers))
1191 continue;
1192
1193 fprintf(f, "# Interface %s\n", iface->name);
1194 write_resolv_conf_entries(f, &iface->config_ip, iface->ifname);
1195 if (!iface->proto_ip.no_dns)
1196 write_resolv_conf_entries(f, &iface->proto_ip, iface->ifname);
1197 }
1198 fflush(f);
1199 rewind(f);
1200 crcnew = crc32_file(f);
1201 fclose(f);
1202
1203 crcold = crcnew + 1;
1204 f = fopen(resolv_conf, "r");
1205 if (f) {
1206 crcold = crc32_file(f);
1207 fclose(f);
1208 }
1209
1210 if (crcold == crcnew) {
1211 unlink(path);
1212 } else if (rename(path, resolv_conf) < 0) {
1213 D(INTERFACE, "Failed to replace %s\n", resolv_conf);
1214 unlink(path);
1215 }
1216 }
1217
1218 void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled)
1219 {
1220 struct device_addr *addr;
1221 struct device_route *route;
1222 struct device *dev;
1223 struct interface *iface;
1224
1225 ip->enabled = enabled;
1226 iface = ip->iface;
1227 dev = iface->l3_dev.dev;
1228 if (!dev)
1229 return;
1230
1231 vlist_for_each_element(&ip->addr, addr, node) {
1232 bool v6 = ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET6) ? true : false;
1233
1234 if (addr->enabled == enabled)
1235 continue;
1236
1237 if (enabled) {
1238 system_add_address(dev, addr);
1239 if (iface->metric)
1240 interface_handle_subnet_route(iface, addr, true);
1241
1242 addr->policy_table = (v6) ? iface->ip6table : iface->ip4table;
1243 if (addr->policy_table) {
1244 set_ip_source_policy(true, v6, IPRULE_PRIORITY_ADDR, &addr->addr,
1245 (v6) ? 128 : 32, addr->policy_table, NULL, NULL);
1246
1247 if (addr->mask != ((v6) ? 128 : 32))
1248 set_ip_source_policy(true, v6, IPRULE_PRIORITY_NW, &addr->addr,
1249 addr->mask, addr->policy_table, NULL, NULL);
1250 }
1251 } else {
1252 interface_handle_subnet_route(iface, addr, false);
1253 system_del_address(dev, addr);
1254
1255 if (addr->policy_table) {
1256 set_ip_source_policy(false, v6, IPRULE_PRIORITY_ADDR, &addr->addr,
1257 (v6) ? 128 : 32, addr->policy_table, NULL, NULL);
1258
1259 if (addr->mask != ((v6) ? 128 : 32))
1260 set_ip_source_policy(false, v6, IPRULE_PRIORITY_NW, &addr->addr,
1261 addr->mask, addr->policy_table, NULL, NULL);
1262 }
1263 }
1264 addr->enabled = enabled;
1265 }
1266
1267 vlist_for_each_element(&ip->route, route, node) {
1268 bool _enabled = enabled;
1269
1270 if (!enable_route(ip, route))
1271 _enabled = false;
1272
1273 if (route->enabled == _enabled)
1274 continue;
1275
1276 if (_enabled) {
1277 if (!(route->flags & DEVROUTE_METRIC))
1278 route->metric = ip->iface->metric;
1279
1280 if (!(route->flags & DEVROUTE_TABLE)) {
1281 route->flags &= ~DEVROUTE_SRCTABLE;
1282 route->table = ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET6) ?
1283 iface->ip6table : iface->ip4table;
1284
1285 if (route->table)
1286 route->flags |= DEVROUTE_SRCTABLE;
1287 }
1288
1289 if (system_add_route(dev, route))
1290 route->failed = true;
1291 } else
1292 system_del_route(dev, route);
1293 route->enabled = _enabled;
1294 }
1295
1296 struct device_prefix *c;
1297 struct device_prefix_assignment *a;
1298 list_for_each_entry(c, &prefixes, head)
1299 list_for_each_entry(a, &c->assignments, head)
1300 if (!strcmp(a->name, ip->iface->name))
1301 interface_set_prefix_address(a, c, ip->iface, enabled);
1302
1303 if (ip->iface && ip->iface->l3_dev.dev) {
1304 set_ip_lo_policy(enabled, true, ip->iface);
1305 set_ip_lo_policy(enabled, false, ip->iface);
1306
1307 set_ip_source_policy(enabled, true, IPRULE_PRIORITY_REJECT + ip->iface->l3_dev.dev->ifindex,
1308 NULL, 0, 0, ip->iface, "failed_policy");
1309 }
1310 }
1311
1312 void
1313 interface_ip_update_start(struct interface_ip_settings *ip)
1314 {
1315 if (ip != &ip->iface->config_ip) {
1316 vlist_simple_update(&ip->dns_servers);
1317 vlist_simple_update(&ip->dns_search);
1318 }
1319 vlist_update(&ip->route);
1320 vlist_update(&ip->addr);
1321 vlist_update(&ip->prefix);
1322 }
1323
1324 void
1325 interface_ip_update_complete(struct interface_ip_settings *ip)
1326 {
1327 vlist_simple_flush(&ip->dns_servers);
1328 vlist_simple_flush(&ip->dns_search);
1329 vlist_flush(&ip->route);
1330 vlist_flush(&ip->addr);
1331 vlist_flush(&ip->prefix);
1332 interface_write_resolv_conf();
1333 }
1334
1335 void
1336 interface_ip_flush(struct interface_ip_settings *ip)
1337 {
1338 if (ip == &ip->iface->proto_ip)
1339 vlist_flush_all(&ip->iface->host_routes);
1340 vlist_simple_flush_all(&ip->dns_servers);
1341 vlist_simple_flush_all(&ip->dns_search);
1342 vlist_flush_all(&ip->route);
1343 vlist_flush_all(&ip->addr);
1344 vlist_flush_all(&ip->prefix);
1345 }
1346
1347 static void
1348 __interface_ip_init(struct interface_ip_settings *ip, struct interface *iface)
1349 {
1350 ip->iface = iface;
1351 ip->enabled = true;
1352 vlist_simple_init(&ip->dns_search, struct dns_search_domain, node);
1353 vlist_simple_init(&ip->dns_servers, struct dns_server, node);
1354 vlist_init(&ip->route, route_cmp, interface_update_proto_route);
1355 vlist_init(&ip->addr, addr_cmp, interface_update_proto_addr);
1356 vlist_init(&ip->prefix, prefix_cmp, interface_update_prefix);
1357 }
1358
1359 void
1360 interface_ip_init(struct interface *iface)
1361 {
1362 __interface_ip_init(&iface->proto_ip, iface);
1363 __interface_ip_init(&iface->config_ip, iface);
1364 vlist_init(&iface->host_routes, route_cmp, interface_update_host_route);
1365 }
1366
1367 static void
1368 interface_ip_valid_until_handler(struct uloop_timeout *t)
1369 {
1370 time_t now = system_get_rtime();
1371 struct interface *iface;
1372 vlist_for_each_element(&interfaces, iface, node) {
1373 if (iface->state != IFS_UP)
1374 continue;
1375
1376 struct device_addr *addr, *addrp;
1377 struct device_route *route, *routep;
1378 struct device_prefix *pref, *prefp;
1379
1380 vlist_for_each_element_safe(&iface->proto_ip.addr, addr, node, addrp)
1381 if (addr->valid_until && addr->valid_until < now)
1382 vlist_delete(&iface->proto_ip.addr, &addr->node);
1383
1384 vlist_for_each_element_safe(&iface->proto_ip.route, route, node, routep)
1385 if (route->valid_until && route->valid_until < now)
1386 vlist_delete(&iface->proto_ip.route, &route->node);
1387
1388 vlist_for_each_element_safe(&iface->proto_ip.prefix, pref, node, prefp)
1389 if (pref->valid_until && pref->valid_until < now)
1390 vlist_delete(&iface->proto_ip.prefix, &pref->node);
1391
1392 }
1393
1394 uloop_timeout_set(t, 1000);
1395 }
1396
1397 static void __init
1398 interface_ip_init_worker(void)
1399 {
1400 valid_until_timeout.cb = interface_ip_valid_until_handler;
1401 uloop_timeout_set(&valid_until_timeout, 1000);
1402 }
OpenWrt Network interface configuration daemon