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"
41 static const struct blobmsg_policy route_attr
[__ROUTE_MAX
] = {
42 [ROUTE_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
43 [ROUTE_TARGET
] = { .name
= "target", .type
= BLOBMSG_TYPE_STRING
},
44 [ROUTE_MASK
] = { .name
= "netmask", .type
= BLOBMSG_TYPE_STRING
},
45 [ROUTE_GATEWAY
] = { .name
= "gateway", .type
= BLOBMSG_TYPE_STRING
},
46 [ROUTE_METRIC
] = { .name
= "metric", .type
= BLOBMSG_TYPE_INT32
},
47 [ROUTE_MTU
] = { .name
= "mtu", .type
= BLOBMSG_TYPE_INT32
},
48 [ROUTE_TABLE
] = { .name
= "table", .type
= BLOBMSG_TYPE_STRING
},
49 [ROUTE_VALID
] = { .name
= "valid", .type
= BLOBMSG_TYPE_INT32
},
52 const struct config_param_list route_attr_list
= {
53 .n_params
= __ROUTE_MAX
,
58 struct list_head prefixes
= LIST_HEAD_INIT(prefixes
);
59 static struct device_prefix
*ula_prefix
= NULL
;
60 static struct uloop_timeout valid_until_timeout
;
64 clear_if_addr(union if_addr
*a
, int mask
)
66 int m_bytes
= (mask
+ 7) / 8;
67 uint8_t m_clear
= (1 << (m_bytes
* 8 - mask
)) - 1;
68 uint8_t *p
= (uint8_t *) a
;
70 if (m_bytes
< sizeof(a
))
71 memset(p
+ m_bytes
, 0, sizeof(a
) - m_bytes
);
73 p
[m_bytes
- 1] &= ~m_clear
;
77 match_if_addr(union if_addr
*a1
, union if_addr
*a2
, int mask
)
79 union if_addr
*p1
, *p2
;
81 p1
= alloca(sizeof(*a1
));
82 p2
= alloca(sizeof(*a2
));
84 memcpy(p1
, a1
, sizeof(*a1
));
85 clear_if_addr(p1
, mask
);
86 memcpy(p2
, a2
, sizeof(*a2
));
87 clear_if_addr(p2
, mask
);
89 return !memcmp(p1
, p2
, sizeof(*p1
));
93 __find_ip_addr_target(struct interface_ip_settings
*ip
, union if_addr
*a
, bool v6
)
95 struct device_addr
*addr
;
97 vlist_for_each_element(&ip
->addr
, addr
, node
) {
101 if (v6
!= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
104 if (!match_if_addr(&addr
->addr
, a
, addr
->mask
))
114 __find_ip_route_target(struct interface_ip_settings
*ip
, union if_addr
*a
,
115 bool v6
, struct device_route
**res
)
117 struct device_route
*route
;
119 vlist_for_each_element(&ip
->route
, route
, node
) {
123 if (v6
!= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
126 if (!match_if_addr(&route
->addr
, a
, route
->mask
))
129 if (route
->flags
& DEVROUTE_TABLE
)
132 if (!*res
|| route
->mask
< (*res
)->mask
)
138 interface_ip_find_addr_target(struct interface
*iface
, union if_addr
*a
, bool v6
)
140 return __find_ip_addr_target(&iface
->proto_ip
, a
, v6
) ||
141 __find_ip_addr_target(&iface
->config_ip
, a
, v6
);
145 interface_ip_find_route_target(struct interface
*iface
, union if_addr
*a
,
146 bool v6
, struct device_route
**route
)
148 __find_ip_route_target(&iface
->proto_ip
, a
, v6
, route
);
149 __find_ip_route_target(&iface
->config_ip
, a
, v6
, route
);
153 interface_ip_add_target_route(union if_addr
*addr
, bool v6
)
155 struct interface
*iface
;
156 struct device_route
*route
, *r_next
= NULL
;
157 bool defaultroute_target
= false;
158 int addrsize
= v6
? sizeof(addr
->in6
) : sizeof(addr
->in
);
160 route
= calloc(1, sizeof(*route
));
164 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
165 route
->mask
= v6
? 128 : 32;
166 if (memcmp(&route
->addr
, addr
, addrsize
) == 0)
167 defaultroute_target
= true;
169 memcpy(&route
->addr
, addr
, addrsize
);
171 vlist_for_each_element(&interfaces
, iface
, node
) {
172 /* look for locally addressable target first */
173 if (interface_ip_find_addr_target(iface
, addr
, v6
))
176 /* do not stop at the first route, let the lookup compare
177 * masks to find the best match */
178 interface_ip_find_route_target(iface
, addr
, v6
, &r_next
);
186 iface
= r_next
->iface
;
187 memcpy(&route
->nexthop
, &r_next
->nexthop
, sizeof(route
->nexthop
));
188 route
->mtu
= r_next
->mtu
;
189 route
->metric
= r_next
->metric
;
192 route
->iface
= iface
;
193 if (defaultroute_target
)
196 vlist_add(&iface
->host_routes
, &route
->node
, &route
->flags
);
201 interface_ip_add_route(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
203 struct interface_ip_settings
*ip
;
204 struct blob_attr
*tb
[__ROUTE_MAX
], *cur
;
205 struct device_route
*route
;
206 int af
= v6
? AF_INET6
: AF_INET
;
208 blobmsg_parse(route_attr
, __ROUTE_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
211 if ((cur
= tb
[ROUTE_INTERFACE
]) == NULL
)
214 iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
218 ip
= &iface
->config_ip
;
220 ip
= &iface
->proto_ip
;
223 route
= calloc(1, sizeof(*route
));
227 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
228 route
->mask
= v6
? 128 : 32;
229 if ((cur
= tb
[ROUTE_MASK
]) != NULL
) {
230 route
->mask
= parse_netmask_string(blobmsg_data(cur
), v6
);
231 if (route
->mask
> (v6
? 128 : 32))
235 if ((cur
= tb
[ROUTE_TARGET
]) != NULL
) {
236 if (!parse_ip_and_netmask(af
, blobmsg_data(cur
), &route
->addr
, &route
->mask
)) {
237 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur
));
242 if ((cur
= tb
[ROUTE_GATEWAY
]) != NULL
) {
243 if (!inet_pton(af
, blobmsg_data(cur
), &route
->nexthop
)) {
244 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur
));
249 if ((cur
= tb
[ROUTE_METRIC
]) != NULL
) {
250 route
->metric
= blobmsg_get_u32(cur
);
251 route
->flags
|= DEVROUTE_METRIC
;
254 if ((cur
= tb
[ROUTE_MTU
]) != NULL
) {
255 route
->mtu
= blobmsg_get_u32(cur
);
256 route
->flags
|= DEVROUTE_MTU
;
259 if ((cur
= tb
[ROUTE_TABLE
]) != NULL
) {
260 if (!system_resolve_rt_table(blobmsg_data(cur
), &route
->table
)) {
261 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
266 route
->flags
|= DEVROUTE_TABLE
;
269 if ((cur
= tb
[ROUTE_VALID
]) != NULL
)
270 route
->valid_until
= system_get_rtime() + blobmsg_get_u32(cur
);
272 vlist_add(&ip
->route
, &route
->node
, &route
->flags
);
280 addr_cmp(const void *k1
, const void *k2
, void *ptr
)
282 return memcmp(k1
, k2
, sizeof(struct device_addr
) -
283 offsetof(struct device_addr
, flags
));
287 route_cmp(const void *k1
, const void *k2
, void *ptr
)
289 return memcmp(k1
, k2
, sizeof(struct device_route
) -
290 offsetof(struct device_route
, flags
));
294 prefix_cmp(const void *k1
, const void *k2
, void *ptr
)
296 return memcmp(k1
, k2
, sizeof(struct device_prefix
) -
297 offsetof(struct device_prefix
, addr
));
301 interface_handle_subnet_route(struct interface
*iface
, struct device_addr
*addr
, bool add
)
303 struct device
*dev
= iface
->l3_dev
.dev
;
304 struct device_route route
;
306 memset(&route
, 0, sizeof(route
));
308 route
.flags
= addr
->flags
;
309 route
.mask
= addr
->mask
;
310 memcpy(&route
.addr
, &addr
->addr
, sizeof(route
.addr
));
311 clear_if_addr(&route
.addr
, route
.mask
);
314 route
.flags
|= DEVADDR_KERNEL
;
315 system_del_route(dev
, &route
);
317 if (!(addr
->flags
& DEVADDR_OFFLINK
)) {
318 route
.flags
&= ~DEVADDR_KERNEL
;
319 route
.metric
= iface
->metric
;
320 system_add_route(dev
, &route
);
323 if (!(addr
->flags
& DEVADDR_OFFLINK
))
324 system_del_route(dev
, &route
);
329 interface_update_proto_addr(struct vlist_tree
*tree
,
330 struct vlist_node
*node_new
,
331 struct vlist_node
*node_old
)
333 struct interface_ip_settings
*ip
;
334 struct interface
*iface
;
336 struct device_addr
*a_new
= NULL
, *a_old
= NULL
;
339 ip
= container_of(tree
, struct interface_ip_settings
, addr
);
341 dev
= iface
->l3_dev
.dev
;
344 a_new
= container_of(node_new
, struct device_addr
, node
);
346 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
&&
350 uint32_t *a
= (uint32_t *) &a_new
->addr
;
352 mask
>>= a_new
->mask
;
353 a_new
->broadcast
= *a
| htonl(mask
);
358 a_old
= container_of(node_old
, struct device_addr
, node
);
360 if (a_new
&& a_old
) {
363 if (a_old
->flags
!= a_new
->flags
||
364 a_old
->valid_until
!= a_new
->valid_until
||
365 a_old
->preferred_until
!= a_new
->preferred_until
)
368 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
&&
369 a_new
->broadcast
!= a_old
->broadcast
)
374 if (!(a_old
->flags
& DEVADDR_EXTERNAL
) && a_old
->enabled
&& !keep
) {
375 interface_handle_subnet_route(iface
, a_old
, false);
376 system_del_address(dev
, a_old
);
382 a_new
->enabled
= true;
383 if (!(a_new
->flags
& DEVADDR_EXTERNAL
) && !keep
) {
384 system_add_address(dev
, a_new
);
385 if ((a_new
->flags
& DEVADDR_OFFLINK
) || iface
->metric
)
386 interface_handle_subnet_route(iface
, a_new
, true);
392 enable_route(struct interface_ip_settings
*ip
, struct device_route
*route
)
394 if (ip
->no_defaultroute
&& !route
->mask
)
401 interface_update_proto_route(struct vlist_tree
*tree
,
402 struct vlist_node
*node_new
,
403 struct vlist_node
*node_old
)
405 struct interface_ip_settings
*ip
;
406 struct interface
*iface
;
408 struct device_route
*route_old
, *route_new
;
411 ip
= container_of(tree
, struct interface_ip_settings
, route
);
413 dev
= iface
->l3_dev
.dev
;
415 route_old
= container_of(node_old
, struct device_route
, node
);
416 route_new
= container_of(node_new
, struct device_route
, node
);
418 if (node_old
&& node_new
)
419 keep
= !memcmp(&route_old
->nexthop
, &route_new
->nexthop
, sizeof(route_old
->nexthop
));
422 if (!(route_old
->flags
& DEVADDR_EXTERNAL
) && route_old
->enabled
&& !keep
)
423 system_del_route(dev
, route_old
);
428 bool _enabled
= enable_route(ip
, route_new
);
430 if (!(route_new
->flags
& DEVROUTE_METRIC
))
431 route_new
->metric
= iface
->metric
;
433 if (!(route_new
->flags
& DEVADDR_EXTERNAL
) && !keep
&& _enabled
)
434 system_add_route(dev
, route_new
);
436 route_new
->iface
= iface
;
437 route_new
->enabled
= _enabled
;
442 interface_update_host_route(struct vlist_tree
*tree
,
443 struct vlist_node
*node_new
,
444 struct vlist_node
*node_old
)
446 struct interface
*iface
;
448 struct device_route
*route_old
, *route_new
;
450 iface
= container_of(tree
, struct interface
, host_routes
);
451 dev
= iface
->l3_dev
.dev
;
453 route_old
= container_of(node_old
, struct device_route
, node
);
454 route_new
= container_of(node_new
, struct device_route
, node
);
457 system_del_route(dev
, route_old
);
462 system_add_route(dev
, route_new
);
467 interface_set_prefix_address(struct device_prefix_assignment
*assignment
,
468 const struct device_prefix
*prefix
, struct interface
*iface
, bool add
)
470 const struct interface
*uplink
= prefix
->iface
;
471 if (!iface
->l3_dev
.dev
)
474 struct device
*l3_downlink
= iface
->l3_dev
.dev
;
476 struct device_addr addr
;
477 memset(&addr
, 0, sizeof(addr
));
478 addr
.addr
.in6
= prefix
->addr
;
479 addr
.addr
.in6
.s6_addr32
[1] |= htonl(assignment
->assigned
);
480 addr
.addr
.in6
.s6_addr
[15] += 1;
481 addr
.mask
= assignment
->length
;
482 addr
.flags
= DEVADDR_INET6
;
483 addr
.preferred_until
= prefix
->preferred_until
;
484 addr
.valid_until
= prefix
->valid_until
;
486 if (!add
&& assignment
->enabled
) {
487 time_t now
= system_get_rtime();
488 addr
.preferred_until
= now
;
489 if (!addr
.valid_until
|| addr
.valid_until
- now
> 7200)
490 addr
.valid_until
= now
+ 7200;
491 system_add_address(l3_downlink
, &addr
);
492 assignment
->enabled
= false;
493 } else if (add
&& (iface
->state
== IFS_UP
|| iface
->state
== IFS_SETUP
)) {
494 system_add_address(l3_downlink
, &addr
);
495 if (uplink
&& uplink
->l3_dev
.dev
) {
496 int mtu
= system_update_ipv6_mtu(
497 uplink
->l3_dev
.dev
, 0);
499 system_update_ipv6_mtu(l3_downlink
, mtu
);
501 assignment
->enabled
= true;
505 static bool interface_prefix_assign(struct list_head
*list
,
506 struct device_prefix_assignment
*assign
)
508 int32_t current
= 0, asize
= (1 << (64 - assign
->length
)) - 1;
509 struct device_prefix_assignment
*c
;
510 list_for_each_entry(c
, list
, head
) {
511 if (assign
->assigned
!= -1) {
512 if (assign
->assigned
> current
&& assign
->assigned
+ asize
< c
->assigned
) {
513 list_add_tail(&assign
->head
, &c
->head
);
516 } else if (assign
->assigned
== -1) {
517 current
= (current
+ asize
) & (~asize
);
518 if (current
+ asize
< c
->assigned
) {
519 assign
->assigned
= current
;
520 list_add_tail(&assign
->head
, &c
->head
);
524 current
= (c
->assigned
+ (1 << (64 - c
->length
)));
529 static void interface_update_prefix_assignments(struct device_prefix
*prefix
, bool setup
)
531 struct device_prefix_assignment
*c
;
532 struct interface
*iface
;
534 // Delete all assignments
535 while (!list_empty(&prefix
->assignments
)) {
536 c
= list_first_entry(&prefix
->assignments
,
537 struct device_prefix_assignment
, head
);
538 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
539 interface_set_prefix_address(c
, prefix
, iface
, false);
547 // End-of-assignment sentinel
548 c
= malloc(sizeof(*c
) + 1);
549 c
->assigned
= 1 << (64 - prefix
->length
);
552 list_add(&c
->head
, &prefix
->assignments
);
555 if (prefix
->excl_length
> 0) {
556 const char name
[] = "!excluded";
557 c
= malloc(sizeof(*c
) + sizeof(name
));
558 c
->assigned
= ntohl(prefix
->excl_addr
.s6_addr32
[1]) &
559 ((1 << (64 - prefix
->length
)) - 1);
560 c
->length
= prefix
->excl_length
;
561 memcpy(c
->name
, name
, sizeof(name
));
562 list_add(&c
->head
, &prefix
->assignments
);
565 struct list_head assign_later
= LIST_HEAD_INIT(assign_later
);
566 vlist_for_each_element(&interfaces
, iface
, node
) {
567 if (iface
->config_ip
.assignment_length
< 48 ||
568 iface
->config_ip
.assignment_length
> 64)
571 size_t namelen
= strlen(iface
->name
) + 1;
572 c
= malloc(sizeof(*c
) + namelen
);
573 c
->length
= iface
->config_ip
.assignment_length
;
574 c
->assigned
= iface
->config_ip
.assignment_hint
;
576 memcpy(c
->name
, iface
->name
, namelen
);
578 // First process all custom assignments, put all others in later-list
579 if (c
->assigned
== -1 || !interface_prefix_assign(&prefix
->assignments
, c
)) {
580 if (c
->assigned
!= -1) {
582 netifd_log_message(L_WARNING
, "Failed to assign requested subprefix "
583 "of size %hhu for %s, trying other\n", c
->length
, c
->name
);
585 list_add_tail(&c
->head
, &assign_later
);
589 // Then try to assign all other + failed custom assignments
590 while (!list_empty(&assign_later
)) {
591 c
= list_first_entry(&assign_later
, struct device_prefix_assignment
, head
);
593 if (!interface_prefix_assign(&prefix
->assignments
, c
)) {
594 netifd_log_message(L_WARNING
, "Failed to assign subprefix "
595 "of size %hhu for %s\n", c
->length
, c
->name
);
600 list_for_each_entry(c
, &prefix
->assignments
, head
)
601 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
602 interface_set_prefix_address(c
, prefix
, iface
, true);
606 void interface_refresh_assignments(bool hint
)
608 static bool refresh
= false;
609 if (!hint
&& refresh
) {
610 struct device_prefix
*p
;
611 list_for_each_entry(p
, &prefixes
, head
)
612 interface_update_prefix_assignments(p
, true);
619 interface_update_prefix(struct vlist_tree
*tree
,
620 struct vlist_node
*node_new
,
621 struct vlist_node
*node_old
)
623 struct device_prefix
*prefix_old
, *prefix_new
;
624 prefix_old
= container_of(node_old
, struct device_prefix
, node
);
625 prefix_new
= container_of(node_new
, struct device_prefix
, node
);
627 struct device_route route
;
628 memset(&route
, 0, sizeof(route
));
629 route
.flags
= DEVADDR_INET6
;
630 route
.metric
= INT32_MAX
;
631 route
.mask
= (node_new
) ? prefix_new
->length
: prefix_old
->length
;
632 route
.addr
.in6
= (node_new
) ? prefix_new
->addr
: prefix_old
->addr
;
634 struct device_prefix_assignment
*c
;
635 struct interface
*iface
;
637 if (node_old
&& node_new
) {
638 // Move assignments and refresh addresses to update valid times
639 list_splice_init(&prefix_old
->assignments
, &prefix_new
->assignments
);
641 list_for_each_entry(c
, &prefix_new
->assignments
, head
)
642 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
643 interface_set_prefix_address(c
, prefix_new
, iface
, true);
644 } else if (node_new
) {
645 // Set null-route to avoid routing loops
646 system_add_route(NULL
, &route
);
648 INIT_LIST_HEAD(&prefix_new
->assignments
);
649 interface_update_prefix_assignments(prefix_new
, true);
650 } else if (node_old
) {
651 interface_update_prefix_assignments(prefix_old
, false);
654 system_del_route(NULL
, &route
);
658 list_del(&prefix_old
->head
);
663 list_add(&prefix_new
->head
, &prefixes
);
667 struct device_prefix
*
668 interface_ip_add_device_prefix(struct interface
*iface
, struct in6_addr
*addr
,
669 uint8_t length
, time_t valid_until
, time_t preferred_until
,
670 struct in6_addr
*excl_addr
, uint8_t excl_length
)
672 struct device_prefix
*prefix
= calloc(1, sizeof(*prefix
));
673 prefix
->length
= length
;
674 prefix
->addr
= *addr
;
675 prefix
->preferred_until
= preferred_until
;
676 prefix
->valid_until
= valid_until
;
677 prefix
->iface
= iface
;
680 prefix
->excl_addr
= *excl_addr
;
681 prefix
->excl_length
= excl_length
;
685 vlist_add(&iface
->proto_ip
.prefix
, &prefix
->node
, &prefix
->addr
);
687 interface_update_prefix(NULL
, &prefix
->node
, NULL
);
693 interface_ip_set_ula_prefix(const char *prefix
)
695 char buf
[INET6_ADDRSTRLEN
+ 4] = {0}, *saveptr
;
697 strncpy(buf
, prefix
, sizeof(buf
) - 1);
698 char *prefixaddr
= strtok_r(buf
, "/", &saveptr
);
700 struct in6_addr addr
;
701 if (!prefixaddr
|| inet_pton(AF_INET6
, prefixaddr
, &addr
) < 1) {
703 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
710 char *prefixlen
= strtok_r(NULL
, ",", &saveptr
);
711 if (!prefixlen
|| (length
= atoi(prefixlen
)) < 1 || length
> 64)
714 if (!ula_prefix
|| !IN6_ARE_ADDR_EQUAL(&addr
, &ula_prefix
->addr
) ||
715 ula_prefix
->length
!= length
) {
717 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
719 ula_prefix
= interface_ip_add_device_prefix(NULL
, &addr
, length
,
725 interface_add_dns_server(struct interface_ip_settings
*ip
, const char *str
)
727 struct dns_server
*s
;
729 s
= calloc(1, sizeof(*s
));
734 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
738 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
745 D(INTERFACE
, "Add IPv%c DNS server: %s\n",
746 s
->af
== AF_INET6
? '6' : '4', str
);
747 vlist_simple_add(&ip
->dns_servers
, &s
->node
);
751 interface_add_dns_server_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
753 struct blob_attr
*cur
;
756 blobmsg_for_each_attr(cur
, list
, rem
) {
757 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
760 if (!blobmsg_check_attr(cur
, NULL
))
763 interface_add_dns_server(ip
, blobmsg_data(cur
));
768 interface_add_dns_search_domain(struct interface_ip_settings
*ip
, const char *str
)
770 struct dns_search_domain
*s
;
771 int len
= strlen(str
);
773 s
= calloc(1, sizeof(*s
) + len
+ 1);
777 D(INTERFACE
, "Add DNS search domain: %s\n", str
);
778 memcpy(s
->name
, str
, len
);
779 vlist_simple_add(&ip
->dns_search
, &s
->node
);
783 interface_add_dns_search_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
785 struct blob_attr
*cur
;
788 blobmsg_for_each_attr(cur
, list
, rem
) {
789 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
792 if (!blobmsg_check_attr(cur
, NULL
))
795 interface_add_dns_search_domain(ip
, blobmsg_data(cur
));
800 write_resolv_conf_entries(FILE *f
, struct interface_ip_settings
*ip
)
802 struct dns_server
*s
;
803 struct dns_search_domain
*d
;
805 char buf
[INET6_ADDRSTRLEN
];
807 vlist_simple_for_each_element(&ip
->dns_servers
, s
, node
) {
808 str
= inet_ntop(s
->af
, &s
->addr
, buf
, sizeof(buf
));
812 fprintf(f
, "nameserver %s\n", str
);
815 vlist_simple_for_each_element(&ip
->dns_search
, d
, node
) {
816 fprintf(f
, "search %s\n", d
->name
);
821 interface_write_resolv_conf(void)
823 struct interface
*iface
;
824 char *path
= alloca(strlen(resolv_conf
) + 5);
826 uint32_t crcold
, crcnew
;
828 sprintf(path
, "%s.tmp", resolv_conf
);
830 f
= fopen(path
, "w+");
832 D(INTERFACE
, "Failed to open %s for writing\n", path
);
836 vlist_for_each_element(&interfaces
, iface
, node
) {
837 if (iface
->state
!= IFS_UP
)
840 if (vlist_simple_empty(&iface
->proto_ip
.dns_search
) &&
841 vlist_simple_empty(&iface
->proto_ip
.dns_servers
) &&
842 vlist_simple_empty(&iface
->config_ip
.dns_search
) &&
843 vlist_simple_empty(&iface
->config_ip
.dns_servers
))
846 fprintf(f
, "# Interface %s\n", iface
->name
);
847 write_resolv_conf_entries(f
, &iface
->config_ip
);
848 if (!iface
->proto_ip
.no_dns
)
849 write_resolv_conf_entries(f
, &iface
->proto_ip
);
853 crcnew
= crc32_file(f
);
857 f
= fopen(resolv_conf
, "r");
859 crcold
= crc32_file(f
);
863 if (crcold
== crcnew
) {
865 } else if (rename(path
, resolv_conf
) < 0) {
866 D(INTERFACE
, "Failed to replace %s\n", resolv_conf
);
871 void interface_ip_set_enabled(struct interface_ip_settings
*ip
, bool enabled
)
873 struct device_addr
*addr
;
874 struct device_route
*route
;
877 ip
->enabled
= enabled
;
878 dev
= ip
->iface
->l3_dev
.dev
;
882 vlist_for_each_element(&ip
->addr
, addr
, node
) {
883 if (addr
->enabled
== enabled
)
887 system_add_address(dev
, addr
);
889 system_del_address(dev
, addr
);
890 addr
->enabled
= enabled
;
893 vlist_for_each_element(&ip
->route
, route
, node
) {
894 bool _enabled
= enabled
;
896 if (!enable_route(ip
, route
))
899 if (route
->enabled
== _enabled
)
903 if (!(route
->flags
& DEVROUTE_METRIC
))
904 route
->metric
= ip
->iface
->metric
;
906 system_add_route(dev
, route
);
908 system_del_route(dev
, route
);
909 route
->enabled
= _enabled
;
912 struct device_prefix
*c
;
913 struct device_prefix_assignment
*a
;
914 list_for_each_entry(c
, &prefixes
, head
)
915 list_for_each_entry(a
, &c
->assignments
, head
)
916 if (!strcmp(a
->name
, ip
->iface
->name
))
917 interface_set_prefix_address(a
, c
, ip
->iface
, enabled
);
921 interface_ip_update_start(struct interface_ip_settings
*ip
)
923 if (ip
!= &ip
->iface
->config_ip
) {
924 vlist_simple_update(&ip
->dns_servers
);
925 vlist_simple_update(&ip
->dns_search
);
927 vlist_update(&ip
->route
);
928 vlist_update(&ip
->addr
);
929 vlist_update(&ip
->prefix
);
933 interface_ip_update_complete(struct interface_ip_settings
*ip
)
935 vlist_simple_flush(&ip
->dns_servers
);
936 vlist_simple_flush(&ip
->dns_search
);
937 vlist_flush(&ip
->route
);
938 vlist_flush(&ip
->addr
);
939 vlist_flush(&ip
->prefix
);
940 interface_write_resolv_conf();
944 interface_ip_flush(struct interface_ip_settings
*ip
)
946 if (ip
== &ip
->iface
->proto_ip
)
947 vlist_flush_all(&ip
->iface
->host_routes
);
948 vlist_simple_flush_all(&ip
->dns_servers
);
949 vlist_simple_flush_all(&ip
->dns_search
);
950 vlist_flush_all(&ip
->route
);
951 vlist_flush_all(&ip
->addr
);
952 vlist_flush_all(&ip
->prefix
);
956 __interface_ip_init(struct interface_ip_settings
*ip
, struct interface
*iface
)
960 vlist_simple_init(&ip
->dns_search
, struct dns_search_domain
, node
);
961 vlist_simple_init(&ip
->dns_servers
, struct dns_server
, node
);
962 vlist_init(&ip
->route
, route_cmp
, interface_update_proto_route
);
963 vlist_init(&ip
->addr
, addr_cmp
, interface_update_proto_addr
);
964 vlist_init(&ip
->prefix
, prefix_cmp
, interface_update_prefix
);
968 interface_ip_init(struct interface
*iface
)
970 __interface_ip_init(&iface
->proto_ip
, iface
);
971 __interface_ip_init(&iface
->config_ip
, iface
);
972 vlist_init(&iface
->host_routes
, route_cmp
, interface_update_host_route
);
977 interface_ip_valid_until_handler(struct uloop_timeout
*t
)
979 time_t now
= system_get_rtime();
980 struct interface
*iface
;
981 vlist_for_each_element(&interfaces
, iface
, node
) {
982 if (iface
->state
!= IFS_UP
)
985 struct device_addr
*addr
, *addrp
;
986 struct device_route
*route
, *routep
;
987 struct device_prefix
*pref
, *prefp
;
989 vlist_for_each_element_safe(&iface
->proto_ip
.addr
, addr
, node
, addrp
)
990 if (addr
->valid_until
&& addr
->valid_until
< now
)
991 vlist_delete(&iface
->proto_ip
.addr
, &addr
->node
);
993 vlist_for_each_element_safe(&iface
->proto_ip
.route
, route
, node
, routep
)
994 if (route
->valid_until
&& route
->valid_until
< now
)
995 vlist_delete(&iface
->proto_ip
.route
, &route
->node
);
997 vlist_for_each_element_safe(&iface
->proto_ip
.prefix
, pref
, node
, prefp
)
998 if (pref
->valid_until
&& pref
->valid_until
< now
)
999 vlist_delete(&iface
->proto_ip
.prefix
, &pref
->node
);
1003 uloop_timeout_set(t
, 1000);
1007 interface_ip_init_worker(void)
1009 valid_until_timeout
.cb
= interface_ip_valid_until_handler
;
1010 uloop_timeout_set(&valid_until_timeout
, 1000);