2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
19 #include <arpa/inet.h>
23 #include "interface.h"
24 #include "interface-ip.h"
40 static const struct blobmsg_policy route_attr
[__ROUTE_MAX
] = {
41 [ROUTE_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
42 [ROUTE_TARGET
] = { .name
= "target", .type
= BLOBMSG_TYPE_STRING
},
43 [ROUTE_MASK
] = { .name
= "netmask", .type
= BLOBMSG_TYPE_STRING
},
44 [ROUTE_GATEWAY
] = { .name
= "gateway", .type
= BLOBMSG_TYPE_STRING
},
45 [ROUTE_METRIC
] = { .name
= "metric", .type
= BLOBMSG_TYPE_INT32
},
46 [ROUTE_MTU
] = { .name
= "mtu", .type
= BLOBMSG_TYPE_INT32
},
47 [ROUTE_VALID
] = { .name
= "valid", .type
= BLOBMSG_TYPE_INT32
},
50 const struct config_param_list route_attr_list
= {
51 .n_params
= __ROUTE_MAX
,
56 struct list_head prefixes
= LIST_HEAD_INIT(prefixes
);
57 static struct device_prefix
*ula_prefix
= NULL
;
58 static struct uloop_timeout valid_until_timeout
;
62 clear_if_addr(union if_addr
*a
, int mask
)
64 int m_bytes
= (mask
+ 7) / 8;
65 uint8_t m_clear
= (1 << (m_bytes
* 8 - mask
)) - 1;
66 uint8_t *p
= (uint8_t *) a
;
68 if (m_bytes
< sizeof(a
))
69 memset(p
+ m_bytes
, 0, sizeof(a
) - m_bytes
);
71 p
[m_bytes
- 1] &= ~m_clear
;
75 match_if_addr(union if_addr
*a1
, union if_addr
*a2
, int mask
)
77 union if_addr
*p1
, *p2
;
79 p1
= alloca(sizeof(*a1
));
80 p2
= alloca(sizeof(*a2
));
82 memcpy(p1
, a1
, sizeof(*a1
));
83 clear_if_addr(p1
, mask
);
84 memcpy(p2
, a2
, sizeof(*a2
));
85 clear_if_addr(p2
, mask
);
87 return !memcmp(p1
, p2
, sizeof(*p1
));
91 __find_ip_addr_target(struct interface_ip_settings
*ip
, union if_addr
*a
, bool v6
)
93 struct device_addr
*addr
;
95 vlist_for_each_element(&ip
->addr
, addr
, node
) {
99 if (v6
!= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
102 if (!match_if_addr(&addr
->addr
, a
, addr
->mask
))
112 __find_ip_route_target(struct interface_ip_settings
*ip
, union if_addr
*a
,
113 bool v6
, struct device_route
**res
)
115 struct device_route
*route
;
117 vlist_for_each_element(&ip
->route
, route
, node
) {
121 if (v6
!= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
124 if (!match_if_addr(&route
->addr
, a
, route
->mask
))
127 if (!*res
|| route
->mask
< (*res
)->mask
)
133 interface_ip_find_addr_target(struct interface
*iface
, union if_addr
*a
, bool v6
)
135 return __find_ip_addr_target(&iface
->proto_ip
, a
, v6
) ||
136 __find_ip_addr_target(&iface
->config_ip
, a
, v6
);
140 interface_ip_find_route_target(struct interface
*iface
, union if_addr
*a
,
141 bool v6
, struct device_route
**route
)
143 __find_ip_route_target(&iface
->proto_ip
, a
, v6
, route
);
144 __find_ip_route_target(&iface
->config_ip
, a
, v6
, route
);
148 interface_ip_add_target_route(union if_addr
*addr
, bool v6
)
150 struct interface
*iface
;
151 struct device_route
*route
, *r_next
= NULL
;
152 bool defaultroute_target
= false;
153 int addrsize
= v6
? sizeof(addr
->in6
) : sizeof(addr
->in
);
155 route
= calloc(1, sizeof(*route
));
159 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
160 route
->mask
= v6
? 128 : 32;
161 if (memcmp(&route
->addr
, addr
, addrsize
) == 0)
162 defaultroute_target
= true;
164 memcpy(&route
->addr
, addr
, addrsize
);
166 vlist_for_each_element(&interfaces
, iface
, node
) {
167 /* look for locally addressable target first */
168 if (interface_ip_find_addr_target(iface
, addr
, v6
))
171 /* do not stop at the first route, let the lookup compare
172 * masks to find the best match */
173 interface_ip_find_route_target(iface
, addr
, v6
, &r_next
);
181 iface
= r_next
->iface
;
182 memcpy(&route
->nexthop
, &r_next
->nexthop
, sizeof(route
->nexthop
));
183 route
->mtu
= r_next
->mtu
;
184 route
->metric
= r_next
->metric
;
187 route
->iface
= iface
;
188 if (defaultroute_target
)
191 vlist_add(&iface
->host_routes
, &route
->node
, &route
->flags
);
196 interface_ip_add_route(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
198 struct interface_ip_settings
*ip
;
199 struct blob_attr
*tb
[__ROUTE_MAX
], *cur
;
200 struct device_route
*route
;
201 int af
= v6
? AF_INET6
: AF_INET
;
203 blobmsg_parse(route_attr
, __ROUTE_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
206 if ((cur
= tb
[ROUTE_INTERFACE
]) == NULL
)
209 iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
213 ip
= &iface
->config_ip
;
215 ip
= &iface
->proto_ip
;
218 route
= calloc(1, sizeof(*route
));
222 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
223 route
->mask
= v6
? 128 : 32;
224 if ((cur
= tb
[ROUTE_MASK
]) != NULL
) {
225 route
->mask
= parse_netmask_string(blobmsg_data(cur
), v6
);
226 if (route
->mask
> (v6
? 128 : 32))
230 if ((cur
= tb
[ROUTE_TARGET
]) != NULL
) {
231 if (!parse_ip_and_netmask(af
, blobmsg_data(cur
), &route
->addr
, &route
->mask
)) {
232 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur
));
237 if ((cur
= tb
[ROUTE_GATEWAY
]) != NULL
) {
238 if (!inet_pton(af
, blobmsg_data(cur
), &route
->nexthop
)) {
239 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur
));
244 if ((cur
= tb
[ROUTE_METRIC
]) != NULL
) {
245 route
->metric
= blobmsg_get_u32(cur
);
246 route
->flags
|= DEVROUTE_METRIC
;
249 if ((cur
= tb
[ROUTE_MTU
]) != NULL
) {
250 route
->mtu
= blobmsg_get_u32(cur
);
251 route
->flags
|= DEVROUTE_MTU
;
254 if ((cur
= tb
[ROUTE_VALID
]) != NULL
)
255 route
->valid_until
= system_get_rtime() + blobmsg_get_u32(cur
);
257 vlist_add(&ip
->route
, &route
->node
, &route
->flags
);
265 addr_cmp(const void *k1
, const void *k2
, void *ptr
)
267 return memcmp(k1
, k2
, sizeof(struct device_addr
) -
268 offsetof(struct device_addr
, flags
));
272 route_cmp(const void *k1
, const void *k2
, void *ptr
)
274 return memcmp(k1
, k2
, sizeof(struct device_route
) -
275 offsetof(struct device_route
, flags
));
279 prefix_cmp(const void *k1
, const void *k2
, void *ptr
)
281 return memcmp(k1
, k2
, sizeof(struct device_prefix
) -
282 offsetof(struct device_prefix
, addr
));
286 interface_handle_subnet_route(struct interface
*iface
, struct device_addr
*addr
, bool add
)
288 struct device
*dev
= iface
->l3_dev
.dev
;
289 struct device_route route
;
291 memset(&route
, 0, sizeof(route
));
293 route
.flags
= addr
->flags
;
294 route
.mask
= addr
->mask
;
295 memcpy(&route
.addr
, &addr
->addr
, sizeof(route
.addr
));
296 clear_if_addr(&route
.addr
, route
.mask
);
299 route
.flags
|= DEVADDR_KERNEL
;
300 system_del_route(dev
, &route
);
302 if (!(addr
->flags
& DEVADDR_OFFLINK
)) {
303 route
.flags
&= ~DEVADDR_KERNEL
;
304 route
.metric
= iface
->metric
;
305 system_add_route(dev
, &route
);
308 if (!(addr
->flags
& DEVADDR_OFFLINK
))
309 system_del_route(dev
, &route
);
314 interface_update_proto_addr(struct vlist_tree
*tree
,
315 struct vlist_node
*node_new
,
316 struct vlist_node
*node_old
)
318 struct interface_ip_settings
*ip
;
319 struct interface
*iface
;
321 struct device_addr
*a_new
= NULL
, *a_old
= NULL
;
324 ip
= container_of(tree
, struct interface_ip_settings
, addr
);
326 dev
= iface
->l3_dev
.dev
;
329 a_new
= container_of(node_new
, struct device_addr
, node
);
331 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
&&
335 uint32_t *a
= (uint32_t *) &a_new
->addr
;
337 mask
>>= a_new
->mask
;
338 a_new
->broadcast
= *a
| htonl(mask
);
343 a_old
= container_of(node_old
, struct device_addr
, node
);
345 if (a_new
&& a_old
) {
348 if (a_old
->flags
!= a_new
->flags
||
349 a_old
->valid_until
!= a_new
->valid_until
||
350 a_old
->preferred_until
!= a_new
->preferred_until
)
353 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
&&
354 a_new
->broadcast
!= a_old
->broadcast
)
359 if (!(a_old
->flags
& DEVADDR_EXTERNAL
) && a_old
->enabled
&& !keep
) {
360 interface_handle_subnet_route(iface
, a_old
, false);
361 system_del_address(dev
, a_old
);
367 a_new
->enabled
= true;
368 if (!(a_new
->flags
& DEVADDR_EXTERNAL
) && !keep
) {
369 system_add_address(dev
, a_new
);
370 if ((a_new
->flags
& DEVADDR_OFFLINK
) || iface
->metric
)
371 interface_handle_subnet_route(iface
, a_new
, true);
377 enable_route(struct interface_ip_settings
*ip
, struct device_route
*route
)
379 if (ip
->no_defaultroute
&& !route
->mask
)
386 interface_update_proto_route(struct vlist_tree
*tree
,
387 struct vlist_node
*node_new
,
388 struct vlist_node
*node_old
)
390 struct interface_ip_settings
*ip
;
391 struct interface
*iface
;
393 struct device_route
*route_old
, *route_new
;
396 ip
= container_of(tree
, struct interface_ip_settings
, route
);
398 dev
= iface
->l3_dev
.dev
;
400 route_old
= container_of(node_old
, struct device_route
, node
);
401 route_new
= container_of(node_new
, struct device_route
, node
);
403 if (node_old
&& node_new
)
404 keep
= !memcmp(&route_old
->nexthop
, &route_new
->nexthop
, sizeof(route_old
->nexthop
));
407 if (!(route_old
->flags
& DEVADDR_EXTERNAL
) && route_old
->enabled
&& !keep
)
408 system_del_route(dev
, route_old
);
413 bool _enabled
= enable_route(ip
, route_new
);
415 if (!(route_new
->flags
& DEVROUTE_METRIC
))
416 route_new
->metric
= iface
->metric
;
418 if (!(route_new
->flags
& DEVADDR_EXTERNAL
) && !keep
&& _enabled
)
419 system_add_route(dev
, route_new
);
421 route_new
->iface
= iface
;
422 route_new
->enabled
= _enabled
;
427 interface_update_host_route(struct vlist_tree
*tree
,
428 struct vlist_node
*node_new
,
429 struct vlist_node
*node_old
)
431 struct interface
*iface
;
433 struct device_route
*route_old
, *route_new
;
435 iface
= container_of(tree
, struct interface
, host_routes
);
436 dev
= iface
->l3_dev
.dev
;
438 route_old
= container_of(node_old
, struct device_route
, node
);
439 route_new
= container_of(node_new
, struct device_route
, node
);
442 system_del_route(dev
, route_old
);
447 system_add_route(dev
, route_new
);
452 interface_set_prefix_address(struct interface
*iface
, bool add
,
453 struct device_prefix_assignment
*assignment
)
455 struct interface
*uplink
= assignment
->prefix
->iface
;
456 if (!iface
->l3_dev
.dev
)
459 struct device
*l3_downlink
= iface
->l3_dev
.dev
;
461 struct device_addr addr
;
462 memset(&addr
, 0, sizeof(addr
));
463 addr
.addr
.in6
= assignment
->addr
;
464 addr
.mask
= assignment
->length
;
465 addr
.flags
= DEVADDR_INET6
;
466 addr
.preferred_until
= assignment
->prefix
->preferred_until
;
467 addr
.valid_until
= assignment
->prefix
->valid_until
;
470 if (assignment
->enabled
) {
471 time_t now
= system_get_rtime();
472 addr
.preferred_until
= now
;
473 if (!addr
.valid_until
|| addr
.valid_until
- now
> 7200)
474 addr
.valid_until
= now
+ 7200;
475 system_add_address(l3_downlink
, &addr
);
478 system_add_address(l3_downlink
, &addr
);
480 if (uplink
&& uplink
->l3_dev
.dev
) {
481 int mtu
= system_update_ipv6_mtu(
482 uplink
->l3_dev
.dev
, 0);
484 system_update_ipv6_mtu(l3_downlink
, mtu
);
487 assignment
->enabled
= add
;
492 interface_update_prefix_assignments(struct vlist_tree
*tree
,
493 struct vlist_node
*node_new
,
494 struct vlist_node
*node_old
)
496 struct device_prefix_assignment
*old
, *new;
497 old
= container_of(node_old
, struct device_prefix_assignment
, node
);
498 new = container_of(node_new
, struct device_prefix_assignment
, node
);
500 // Assignments persist across interface reloads etc.
501 // so use indirection to avoid dangling pointers
502 struct interface
*iface
= vlist_find(&interfaces
,
503 (node_new
) ? new->name
: old
->name
, iface
, node
);
505 if (node_old
&& node_new
) {
506 new->addr
= old
->addr
;
507 new->length
= old
->length
;
508 } else if (node_old
) {
510 interface_set_prefix_address(iface
, false, old
);
512 } else if (node_new
) {
513 struct device_prefix
*prefix
= new->prefix
;
514 uint64_t want
= 1ULL << (64 - new->length
);
515 prefix
->avail
&= ~(want
- 1);
516 prefix
->avail
-= want
;
519 uint64_t assigned
= ~prefix
->avail
;
520 assigned
&= (1ULL << (64 - prefix
->length
)) - 1;
521 assigned
&= ~(want
- 1);
524 new->addr
= prefix
->addr
;
525 new->addr
.s6_addr32
[0] |=
526 htonl(assigned
>> 32);
527 new->addr
.s6_addr32
[1] |=
528 htonl(assigned
& 0xffffffffU
);
529 new->addr
.s6_addr
[15] += 1;
532 if (node_new
&& (iface
->state
== IFS_UP
|| iface
->state
== IFS_SETUP
))
533 interface_set_prefix_address(iface
, true, new);
538 interface_ip_set_prefix_assignment(struct device_prefix
*prefix
,
539 struct interface
*iface
, uint8_t length
)
541 struct device_prefix_assignment
*assignment
;
543 if (!length
|| length
> 64) {
544 assignment
= vlist_find(prefix
->assignments
, iface
->name
, assignment
, node
);
546 interface_set_prefix_address(iface
, false, assignment
);
548 uint64_t want
= 1ULL << (64 - length
);
551 if (prefix
->avail
< want
&& prefix
->avail
> 0) {
553 want
= 1ULL << (64 - ++length
);
554 } while (want
> prefix
->avail
);
557 if (prefix
->avail
< want
)
560 assignment
= calloc_a(sizeof(*assignment
),
561 &name
, strlen(iface
->name
) + 1);
562 assignment
->prefix
= prefix
;
563 assignment
->length
= length
;
564 assignment
->name
= strcpy(name
, iface
->name
);
566 vlist_add(prefix
->assignments
, &assignment
->node
, assignment
->name
);
571 interface_update_prefix(struct vlist_tree
*tree
,
572 struct vlist_node
*node_new
,
573 struct vlist_node
*node_old
)
575 struct device_prefix
*prefix_old
, *prefix_new
;
576 prefix_old
= container_of(node_old
, struct device_prefix
, node
);
577 prefix_new
= container_of(node_new
, struct device_prefix
, node
);
579 struct device_route route
;
580 memset(&route
, 0, sizeof(route
));
581 route
.flags
= DEVADDR_INET6
;
582 route
.metric
= INT32_MAX
;
583 route
.mask
= (node_new
) ? prefix_new
->length
: prefix_old
->length
;
584 route
.addr
.in6
= (node_new
) ? prefix_new
->addr
: prefix_old
->addr
;
586 if (node_old
&& node_new
) {
587 prefix_new
->avail
= prefix_old
->avail
;
588 prefix_new
->assignments
= prefix_old
->assignments
;
589 prefix_old
->assignments
= NULL
;
591 // Update all assignments
592 struct device_prefix_assignment
*assignment
;
593 struct vlist_tree
*assignments
= prefix_new
->assignments
;
594 vlist_for_each_element(assignments
, assignment
, node
) {
595 assignment
->prefix
= prefix_new
;
596 assignments
->update(assignments
,
597 &assignment
->node
, &assignment
->node
);
599 } else if (node_new
) {
600 prefix_new
->avail
= 1ULL << (64 - prefix_new
->length
);
601 prefix_new
->assignments
= calloc(1, sizeof(*prefix_new
->assignments
));
602 vlist_init(prefix_new
->assignments
, avl_strcmp
,
603 interface_update_prefix_assignments
);
605 // Create initial assignments for interfaces
606 struct interface
*iface
;
607 vlist_for_each_element(&interfaces
, iface
, node
)
608 interface_ip_set_prefix_assignment(prefix_new
, iface
,
609 iface
->proto_ip
.assignment_length
);
611 // Set null-route to avoid routing loops
612 system_add_route(NULL
, &route
);
617 system_del_route(NULL
, &route
);
619 list_del(&prefix_old
->head
);
621 if (prefix_old
->assignments
) {
622 vlist_flush_all(prefix_old
->assignments
);
623 free(prefix_old
->assignments
);
629 list_add(&prefix_new
->head
, &prefixes
);
632 struct device_prefix
*
633 interface_ip_add_device_prefix(struct interface
*iface
, struct in6_addr
*addr
,
634 uint8_t length
, time_t valid_until
, time_t preferred_until
)
636 struct device_prefix
*prefix
= calloc(1, sizeof(*prefix
));
637 prefix
->length
= length
;
638 prefix
->addr
= *addr
;
639 prefix
->preferred_until
= preferred_until
;
640 prefix
->valid_until
= valid_until
;
641 prefix
->iface
= iface
;
644 vlist_add(&iface
->proto_ip
.prefix
, &prefix
->node
, &prefix
->addr
);
646 interface_update_prefix(NULL
, &prefix
->node
, NULL
);
652 interface_ip_set_ula_prefix(const char *prefix
)
654 char buf
[INET6_ADDRSTRLEN
+ 4] = {0}, *saveptr
;
656 strncpy(buf
, prefix
, sizeof(buf
) - 1);
657 char *prefixaddr
= strtok_r(buf
, "/", &saveptr
);
659 struct in6_addr addr
;
660 if (!prefixaddr
|| inet_pton(AF_INET6
, prefixaddr
, &addr
) < 1) {
662 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
669 char *prefixlen
= strtok_r(NULL
, ",", &saveptr
);
670 if (!prefixlen
|| (length
= atoi(prefixlen
)) < 1 || length
> 64)
673 if (!ula_prefix
|| !IN6_ARE_ADDR_EQUAL(&addr
, &ula_prefix
->addr
) ||
674 ula_prefix
->length
!= length
) {
676 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
678 ula_prefix
= interface_ip_add_device_prefix(NULL
, &addr
, length
, 0, 0);
683 interface_add_dns_server(struct interface_ip_settings
*ip
, const char *str
)
685 struct dns_server
*s
;
687 s
= calloc(1, sizeof(*s
));
692 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
696 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
703 D(INTERFACE
, "Add IPv%c DNS server: %s\n",
704 s
->af
== AF_INET6
? '6' : '4', str
);
705 vlist_simple_add(&ip
->dns_servers
, &s
->node
);
709 interface_add_dns_server_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
711 struct blob_attr
*cur
;
714 blobmsg_for_each_attr(cur
, list
, rem
) {
715 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
718 if (!blobmsg_check_attr(cur
, NULL
))
721 interface_add_dns_server(ip
, blobmsg_data(cur
));
726 interface_add_dns_search_domain(struct interface_ip_settings
*ip
, const char *str
)
728 struct dns_search_domain
*s
;
729 int len
= strlen(str
);
731 s
= calloc(1, sizeof(*s
) + len
+ 1);
735 D(INTERFACE
, "Add DNS search domain: %s\n", str
);
736 memcpy(s
->name
, str
, len
);
737 vlist_simple_add(&ip
->dns_search
, &s
->node
);
741 interface_add_dns_search_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
743 struct blob_attr
*cur
;
746 blobmsg_for_each_attr(cur
, list
, rem
) {
747 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
750 if (!blobmsg_check_attr(cur
, NULL
))
753 interface_add_dns_search_domain(ip
, blobmsg_data(cur
));
758 write_resolv_conf_entries(FILE *f
, struct interface_ip_settings
*ip
)
760 struct dns_server
*s
;
761 struct dns_search_domain
*d
;
765 vlist_simple_for_each_element(&ip
->dns_servers
, s
, node
) {
766 str
= inet_ntop(s
->af
, &s
->addr
, buf
, sizeof(buf
));
770 fprintf(f
, "nameserver %s\n", str
);
773 vlist_simple_for_each_element(&ip
->dns_search
, d
, node
) {
774 fprintf(f
, "search %s\n", d
->name
);
779 interface_write_resolv_conf(void)
781 struct interface
*iface
;
782 char *path
= alloca(strlen(resolv_conf
) + 5);
784 uint32_t crcold
, crcnew
;
786 sprintf(path
, "%s.tmp", resolv_conf
);
788 f
= fopen(path
, "w+");
790 D(INTERFACE
, "Failed to open %s for writing\n", path
);
794 vlist_for_each_element(&interfaces
, iface
, node
) {
795 if (iface
->state
!= IFS_UP
)
798 if (vlist_simple_empty(&iface
->proto_ip
.dns_search
) &&
799 vlist_simple_empty(&iface
->proto_ip
.dns_servers
) &&
800 vlist_simple_empty(&iface
->config_ip
.dns_search
) &&
801 vlist_simple_empty(&iface
->config_ip
.dns_servers
))
804 fprintf(f
, "# Interface %s\n", iface
->name
);
805 write_resolv_conf_entries(f
, &iface
->config_ip
);
806 if (!iface
->proto_ip
.no_dns
)
807 write_resolv_conf_entries(f
, &iface
->proto_ip
);
811 crcnew
= crc32_file(f
);
815 f
= fopen(resolv_conf
, "r");
817 crcold
= crc32_file(f
);
821 if (crcold
== crcnew
) {
823 } else if (rename(path
, resolv_conf
) < 0) {
824 D(INTERFACE
, "Failed to replace %s\n", resolv_conf
);
829 void interface_ip_set_enabled(struct interface_ip_settings
*ip
, bool enabled
)
831 struct device_addr
*addr
;
832 struct device_route
*route
;
835 ip
->enabled
= enabled
;
836 dev
= ip
->iface
->l3_dev
.dev
;
840 vlist_for_each_element(&ip
->addr
, addr
, node
) {
841 if (addr
->enabled
== enabled
)
845 system_add_address(dev
, addr
);
847 system_del_address(dev
, addr
);
848 addr
->enabled
= enabled
;
851 vlist_for_each_element(&ip
->route
, route
, node
) {
852 bool _enabled
= enabled
;
854 if (!enable_route(ip
, route
))
857 if (route
->enabled
== _enabled
)
861 if (!(route
->flags
& DEVROUTE_METRIC
))
862 route
->metric
= ip
->iface
->metric
;
864 system_add_route(dev
, route
);
866 system_del_route(dev
, route
);
867 route
->enabled
= _enabled
;
872 interface_ip_update_start(struct interface_ip_settings
*ip
)
874 if (ip
!= &ip
->iface
->config_ip
) {
875 vlist_simple_update(&ip
->dns_servers
);
876 vlist_simple_update(&ip
->dns_search
);
878 vlist_update(&ip
->route
);
879 vlist_update(&ip
->addr
);
880 vlist_update(&ip
->prefix
);
884 interface_ip_update_complete(struct interface_ip_settings
*ip
)
886 vlist_simple_flush(&ip
->dns_servers
);
887 vlist_simple_flush(&ip
->dns_search
);
888 vlist_flush(&ip
->route
);
889 vlist_flush(&ip
->addr
);
890 vlist_flush(&ip
->prefix
);
891 interface_write_resolv_conf();
895 interface_ip_flush(struct interface_ip_settings
*ip
)
897 if (ip
== &ip
->iface
->proto_ip
)
898 vlist_flush_all(&ip
->iface
->host_routes
);
899 vlist_simple_flush_all(&ip
->dns_servers
);
900 vlist_simple_flush_all(&ip
->dns_search
);
901 vlist_flush_all(&ip
->route
);
902 vlist_flush_all(&ip
->addr
);
903 vlist_flush_all(&ip
->prefix
);
907 __interface_ip_init(struct interface_ip_settings
*ip
, struct interface
*iface
)
911 vlist_simple_init(&ip
->dns_search
, struct dns_search_domain
, node
);
912 vlist_simple_init(&ip
->dns_servers
, struct dns_server
, node
);
913 vlist_init(&ip
->route
, route_cmp
, interface_update_proto_route
);
914 vlist_init(&ip
->addr
, addr_cmp
, interface_update_proto_addr
);
915 vlist_init(&ip
->prefix
, prefix_cmp
, interface_update_prefix
);
919 interface_ip_init(struct interface
*iface
)
921 __interface_ip_init(&iface
->proto_ip
, iface
);
922 __interface_ip_init(&iface
->config_ip
, iface
);
923 vlist_init(&iface
->host_routes
, route_cmp
, interface_update_host_route
);
928 interface_ip_valid_until_handler(struct uloop_timeout
*t
)
930 time_t now
= system_get_rtime();
931 struct interface
*iface
;
932 vlist_for_each_element(&interfaces
, iface
, node
) {
933 if (iface
->state
!= IFS_UP
)
936 struct device_addr
*addr
, *addrp
;
937 struct device_route
*route
, *routep
;
938 struct device_prefix
*pref
, *prefp
;
940 vlist_for_each_element_safe(&iface
->proto_ip
.addr
, addr
, node
, addrp
)
941 if (addr
->valid_until
&& addr
->valid_until
< now
)
942 vlist_delete(&iface
->proto_ip
.addr
, &addr
->node
);
944 vlist_for_each_element_safe(&iface
->proto_ip
.route
, route
, node
, routep
)
945 if (route
->valid_until
&& route
->valid_until
< now
)
946 vlist_delete(&iface
->proto_ip
.route
, &route
->node
);
948 vlist_for_each_element_safe(&iface
->proto_ip
.prefix
, pref
, node
, prefp
)
949 if (pref
->valid_until
&& pref
->valid_until
< now
)
950 vlist_delete(&iface
->proto_ip
.prefix
, &pref
->node
);
954 uloop_timeout_set(t
, 1000);
958 interface_ip_init_worker(void)
960 valid_until_timeout
.cb
= interface_ip_valid_until_handler
;
961 uloop_timeout_set(&valid_until_timeout
, 1000);