2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2012 Steven Barth <steven@midlink.org>
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
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.
20 #include <arpa/inet.h>
24 #include "interface.h"
25 #include "interface-ip.h"
42 static const struct blobmsg_policy route_attr
[__ROUTE_MAX
] = {
43 [ROUTE_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
44 [ROUTE_TARGET
] = { .name
= "target", .type
= BLOBMSG_TYPE_STRING
},
45 [ROUTE_MASK
] = { .name
= "netmask", .type
= BLOBMSG_TYPE_STRING
},
46 [ROUTE_GATEWAY
] = { .name
= "gateway", .type
= BLOBMSG_TYPE_STRING
},
47 [ROUTE_METRIC
] = { .name
= "metric", .type
= BLOBMSG_TYPE_INT32
},
48 [ROUTE_MTU
] = { .name
= "mtu", .type
= BLOBMSG_TYPE_INT32
},
49 [ROUTE_TABLE
] = { .name
= "table", .type
= BLOBMSG_TYPE_STRING
},
50 [ROUTE_VALID
] = { .name
= "valid", .type
= BLOBMSG_TYPE_INT32
},
53 const struct config_param_list route_attr_list
= {
54 .n_params
= __ROUTE_MAX
,
59 struct list_head prefixes
= LIST_HEAD_INIT(prefixes
);
60 static struct device_prefix
*ula_prefix
= NULL
;
61 static struct uloop_timeout valid_until_timeout
;
65 clear_if_addr(union if_addr
*a
, int mask
)
67 int m_bytes
= (mask
+ 7) / 8;
68 uint8_t m_clear
= (1 << (m_bytes
* 8 - mask
)) - 1;
69 uint8_t *p
= (uint8_t *) a
;
71 if (m_bytes
< sizeof(a
))
72 memset(p
+ m_bytes
, 0, sizeof(a
) - m_bytes
);
74 p
[m_bytes
- 1] &= ~m_clear
;
78 match_if_addr(union if_addr
*a1
, union if_addr
*a2
, int mask
)
80 union if_addr
*p1
, *p2
;
82 p1
= alloca(sizeof(*a1
));
83 p2
= alloca(sizeof(*a2
));
85 memcpy(p1
, a1
, sizeof(*a1
));
86 clear_if_addr(p1
, mask
);
87 memcpy(p2
, a2
, sizeof(*a2
));
88 clear_if_addr(p2
, mask
);
90 return !memcmp(p1
, p2
, sizeof(*p1
));
93 static int set_ipv6_source_policy(bool add
, const union if_addr
*addr
, uint8_t mask
, int ifindex
)
95 struct iprule rule
= {
96 .flags
= IPRULE_INET6
| IPRULE_SRC
| IPRULE_LOOKUP
| IPRULE_PRIORITY
,
98 .lookup
= interface_ip_resolve_v6_rtable(ifindex
),
103 return (add
) ? system_add_iprule(&rule
) : system_del_iprule(&rule
);
107 __find_ip_addr_target(struct interface_ip_settings
*ip
, union if_addr
*a
, bool v6
)
109 struct device_addr
*addr
;
111 vlist_for_each_element(&ip
->addr
, addr
, node
) {
115 if (v6
!= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
118 // Handle offlink addresses correctly
119 unsigned int mask
= addr
->mask
;
120 if ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
&&
121 (addr
->flags
& DEVADDR_OFFLINK
))
124 if (!match_if_addr(&addr
->addr
, a
, mask
))
134 __find_ip_route_target(struct interface_ip_settings
*ip
, union if_addr
*a
,
135 bool v6
, struct device_route
**res
)
137 struct device_route
*route
;
139 vlist_for_each_element(&ip
->route
, route
, node
) {
143 if (v6
!= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
146 if (!match_if_addr(&route
->addr
, a
, route
->mask
))
149 if (route
->flags
& DEVROUTE_TABLE
)
152 if (!*res
|| route
->mask
< (*res
)->mask
)
158 interface_ip_find_addr_target(struct interface
*iface
, union if_addr
*a
, bool v6
)
160 return __find_ip_addr_target(&iface
->proto_ip
, a
, v6
) ||
161 __find_ip_addr_target(&iface
->config_ip
, a
, v6
);
165 interface_ip_find_route_target(struct interface
*iface
, union if_addr
*a
,
166 bool v6
, struct device_route
**route
)
168 __find_ip_route_target(&iface
->proto_ip
, a
, v6
, route
);
169 __find_ip_route_target(&iface
->config_ip
, a
, v6
, route
);
173 interface_ip_add_target_route(union if_addr
*addr
, bool v6
, struct interface
*iface
)
175 struct device_route
*route
, *r_next
= NULL
;
176 bool defaultroute_target
= false;
177 int addrsize
= v6
? sizeof(addr
->in6
) : sizeof(addr
->in
);
179 route
= calloc(1, sizeof(*route
));
183 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
184 route
->mask
= v6
? 128 : 32;
185 if (memcmp(&route
->addr
, addr
, addrsize
) == 0)
186 defaultroute_target
= true;
188 memcpy(&route
->addr
, addr
, addrsize
);
191 /* look for locally addressable target first */
192 if (interface_ip_find_addr_target(iface
, addr
, v6
))
195 /* do not stop at the first route, let the lookup compare
196 * masks to find the best match */
197 interface_ip_find_route_target(iface
, addr
, v6
, &r_next
);
199 vlist_for_each_element(&interfaces
, iface
, node
) {
200 /* look for locally addressable target first */
201 if (interface_ip_find_addr_target(iface
, addr
, v6
))
204 /* do not stop at the first route, let the lookup compare
205 * masks to find the best match */
206 interface_ip_find_route_target(iface
, addr
, v6
, &r_next
);
215 iface
= r_next
->iface
;
216 memcpy(&route
->nexthop
, &r_next
->nexthop
, sizeof(route
->nexthop
));
217 route
->mtu
= r_next
->mtu
;
218 route
->metric
= r_next
->metric
;
219 route
->table
= r_next
->table
;
222 route
->iface
= iface
;
223 if (defaultroute_target
)
226 vlist_add(&iface
->host_routes
, &route
->node
, route
);
231 interface_ip_add_route(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
233 struct interface_ip_settings
*ip
;
234 struct blob_attr
*tb
[__ROUTE_MAX
], *cur
;
235 struct device_route
*route
;
236 int af
= v6
? AF_INET6
: AF_INET
;
237 bool is_v6_proto_route
= v6
&& iface
;
239 blobmsg_parse(route_attr
, __ROUTE_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
242 if ((cur
= tb
[ROUTE_INTERFACE
]) == NULL
)
245 iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
249 ip
= &iface
->config_ip
;
251 ip
= &iface
->proto_ip
;
254 route
= calloc(1, sizeof(*route
));
258 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
259 route
->mask
= v6
? 128 : 32;
260 if ((cur
= tb
[ROUTE_MASK
]) != NULL
) {
261 route
->mask
= parse_netmask_string(blobmsg_data(cur
), v6
);
262 if (route
->mask
> (v6
? 128 : 32))
266 if ((cur
= tb
[ROUTE_TARGET
]) != NULL
) {
267 if (!parse_ip_and_netmask(af
, blobmsg_data(cur
), &route
->addr
, &route
->mask
)) {
268 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur
));
273 if ((cur
= tb
[ROUTE_GATEWAY
]) != NULL
) {
274 if (!inet_pton(af
, blobmsg_data(cur
), &route
->nexthop
)) {
275 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur
));
280 if ((cur
= tb
[ROUTE_METRIC
]) != NULL
) {
281 route
->metric
= blobmsg_get_u32(cur
);
282 route
->flags
|= DEVROUTE_METRIC
;
285 if ((cur
= tb
[ROUTE_MTU
]) != NULL
) {
286 route
->mtu
= blobmsg_get_u32(cur
);
287 route
->flags
|= DEVROUTE_MTU
;
290 // Use source-based routing
291 if (is_v6_proto_route
) {
292 route
->table
= interface_ip_resolve_v6_rtable(iface
->l3_dev
.dev
->ifindex
);
293 route
->flags
|= DEVROUTE_SRCTABLE
;
296 if ((cur
= tb
[ROUTE_TABLE
]) != NULL
) {
297 if (!system_resolve_rt_table(blobmsg_data(cur
), &route
->table
)) {
298 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
303 route
->flags
|= DEVROUTE_TABLE
;
306 if ((cur
= tb
[ROUTE_VALID
]) != NULL
)
307 route
->valid_until
= system_get_rtime() + blobmsg_get_u32(cur
);
309 vlist_add(&ip
->route
, &route
->node
, route
);
317 addr_cmp(const void *k1
, const void *k2
, void *ptr
)
319 return memcmp(k1
, k2
, sizeof(struct device_addr
) -
320 offsetof(struct device_addr
, flags
));
324 route_cmp(const void *k1
, const void *k2
, void *ptr
)
326 const struct device_route
*r1
= k1
, *r2
= k2
;
328 if (r1
->mask
!= r2
->mask
)
329 return r2
->mask
- r1
->mask
;
331 if (r1
->metric
!= r2
->metric
)
332 return r1
->metric
- r2
->metric
;
334 if (r1
->flags
!= r2
->flags
)
335 return r2
->flags
- r1
->flags
;
337 return memcmp(&r1
->addr
, &r2
->addr
, sizeof(r1
->addr
));
341 prefix_cmp(const void *k1
, const void *k2
, void *ptr
)
343 return memcmp(k1
, k2
, sizeof(struct device_prefix
) -
344 offsetof(struct device_prefix
, addr
));
348 interface_handle_subnet_route(struct interface
*iface
, struct device_addr
*addr
, bool add
)
350 struct device
*dev
= iface
->l3_dev
.dev
;
351 struct device_route route
;
353 memset(&route
, 0, sizeof(route
));
355 route
.flags
= addr
->flags
;
356 route
.mask
= addr
->mask
;
357 memcpy(&route
.addr
, &addr
->addr
, sizeof(route
.addr
));
358 clear_if_addr(&route
.addr
, route
.mask
);
361 route
.flags
|= DEVADDR_KERNEL
;
362 system_del_route(dev
, &route
);
364 if (!(addr
->flags
& DEVADDR_OFFLINK
)) {
365 route
.flags
&= ~DEVADDR_KERNEL
;
366 route
.metric
= iface
->metric
;
367 system_add_route(dev
, &route
);
370 if (!(addr
->flags
& DEVADDR_OFFLINK
))
371 system_del_route(dev
, &route
);
376 interface_update_proto_addr(struct vlist_tree
*tree
,
377 struct vlist_node
*node_new
,
378 struct vlist_node
*node_old
)
380 struct interface_ip_settings
*ip
;
381 struct interface
*iface
;
383 struct device_addr
*a_new
= NULL
, *a_old
= NULL
;
386 ip
= container_of(tree
, struct interface_ip_settings
, addr
);
388 dev
= iface
->l3_dev
.dev
;
391 a_new
= container_of(node_new
, struct device_addr
, node
);
393 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
&&
397 uint32_t *a
= (uint32_t *) &a_new
->addr
;
399 mask
>>= a_new
->mask
;
400 a_new
->broadcast
= *a
| htonl(mask
);
405 a_old
= container_of(node_old
, struct device_addr
, node
);
407 if (a_new
&& a_old
) {
410 if (a_old
->flags
!= a_new
->flags
||
411 a_old
->valid_until
!= a_new
->valid_until
||
412 a_old
->preferred_until
!= a_new
->preferred_until
)
415 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
&&
416 a_new
->broadcast
!= a_old
->broadcast
)
421 if (!(a_old
->flags
& DEVADDR_EXTERNAL
) && a_old
->enabled
&& !keep
) {
422 interface_handle_subnet_route(iface
, a_old
, false);
424 if ((a_old
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
)
425 set_ipv6_source_policy(false, &a_old
->addr
, a_old
->mask
, dev
->ifindex
);
427 system_del_address(dev
, a_old
);
433 a_new
->enabled
= true;
434 if (!(a_new
->flags
& DEVADDR_EXTERNAL
) && !keep
) {
435 system_add_address(dev
, a_new
);
437 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
)
438 set_ipv6_source_policy(true, &a_new
->addr
, a_new
->mask
, dev
->ifindex
);
440 if ((a_new
->flags
& DEVADDR_OFFLINK
) || iface
->metric
)
441 interface_handle_subnet_route(iface
, a_new
, true);
447 enable_route(struct interface_ip_settings
*ip
, struct device_route
*route
)
449 if (ip
->no_defaultroute
&& !route
->mask
)
456 interface_update_proto_route(struct vlist_tree
*tree
,
457 struct vlist_node
*node_new
,
458 struct vlist_node
*node_old
)
460 struct interface_ip_settings
*ip
;
461 struct interface
*iface
;
463 struct device_route
*route_old
, *route_new
;
466 ip
= container_of(tree
, struct interface_ip_settings
, route
);
468 dev
= iface
->l3_dev
.dev
;
470 route_old
= container_of(node_old
, struct device_route
, node
);
471 route_new
= container_of(node_new
, struct device_route
, node
);
473 if (node_old
&& node_new
)
474 keep
= !memcmp(&route_old
->nexthop
, &route_new
->nexthop
, sizeof(route_old
->nexthop
));
477 if (!(route_old
->flags
& DEVADDR_EXTERNAL
) && route_old
->enabled
&& !keep
)
478 system_del_route(dev
, route_old
);
483 bool _enabled
= enable_route(ip
, route_new
);
485 if (!(route_new
->flags
& DEVROUTE_METRIC
))
486 route_new
->metric
= iface
->metric
;
488 if (!(route_new
->flags
& DEVADDR_EXTERNAL
) && !keep
&& _enabled
)
489 system_add_route(dev
, route_new
);
491 route_new
->iface
= iface
;
492 route_new
->enabled
= _enabled
;
497 interface_update_host_route(struct vlist_tree
*tree
,
498 struct vlist_node
*node_new
,
499 struct vlist_node
*node_old
)
501 struct interface
*iface
;
503 struct device_route
*route_old
, *route_new
;
505 iface
= container_of(tree
, struct interface
, host_routes
);
506 dev
= iface
->l3_dev
.dev
;
508 route_old
= container_of(node_old
, struct device_route
, node
);
509 route_new
= container_of(node_new
, struct device_route
, node
);
512 system_del_route(dev
, route_old
);
517 system_add_route(dev
, route_new
);
522 interface_set_prefix_address(struct device_prefix_assignment
*assignment
,
523 const struct device_prefix
*prefix
, struct interface
*iface
, bool add
);
525 static void interface_trigger_ula_prefix(struct interface
*iface
,
526 const struct device_prefix
*prefix
, bool enable
)
528 if (prefix
== ula_prefix
|| (prefix
->addr
.s6_addr
[0] & 0xfe) != 0xfc)
531 bool external_ula
= false;
532 struct device_prefix_assignment
*ula_assign
= NULL
;
533 struct device_prefix
*c
;
534 list_for_each_entry(c
, &prefixes
, head
) {
535 if (c
!= ula_prefix
&& (c
->addr
.s6_addr
[0] & 0xfe) != 0xfc)
538 struct device_prefix_assignment
*a
;
539 list_for_each_entry(a
, &c
->assignments
, head
) {
540 if (!strcmp(a
->name
, iface
->name
)) {
550 // Remove ULA assignment if there is an externally managed ULA and vice versa
551 if (ula_assign
&& ((enable
&& !external_ula
) || (!enable
&& external_ula
)))
552 interface_set_prefix_address(ula_assign
, ula_prefix
, iface
, enable
);
557 interface_set_prefix_address(struct device_prefix_assignment
*assignment
,
558 const struct device_prefix
*prefix
, struct interface
*iface
, bool add
)
560 const struct interface
*uplink
= prefix
->iface
;
561 if (!iface
->l3_dev
.dev
)
564 struct device
*l3_downlink
= iface
->l3_dev
.dev
;
566 struct device_addr addr
;
567 memset(&addr
, 0, sizeof(addr
));
568 addr
.addr
.in6
= prefix
->addr
;
569 addr
.addr
.in6
.s6_addr32
[1] |= htonl(assignment
->assigned
);
570 addr
.addr
.in6
.s6_addr
[15] += 1;
571 addr
.mask
= assignment
->length
;
572 addr
.flags
= DEVADDR_INET6
;
573 addr
.preferred_until
= prefix
->preferred_until
;
574 addr
.valid_until
= prefix
->valid_until
;
576 if (!add
&& assignment
->enabled
) {
577 time_t now
= system_get_rtime();
578 addr
.preferred_until
= now
;
579 if (!addr
.valid_until
|| addr
.valid_until
- now
> 7200)
580 addr
.valid_until
= now
+ 7200;
581 system_add_address(l3_downlink
, &addr
);
582 assignment
->enabled
= false;
584 interface_trigger_ula_prefix(iface
, prefix
, true);
585 } else if (add
&& (iface
->state
== IFS_UP
|| iface
->state
== IFS_SETUP
)) {
586 system_add_address(l3_downlink
, &addr
);
587 if (uplink
&& uplink
->l3_dev
.dev
) {
588 int mtu
= system_update_ipv6_mtu(
589 uplink
->l3_dev
.dev
, 0);
591 system_update_ipv6_mtu(l3_downlink
, mtu
);
593 assignment
->enabled
= true;
595 interface_trigger_ula_prefix(iface
, prefix
, false);
599 static bool interface_prefix_assign(struct list_head
*list
,
600 struct device_prefix_assignment
*assign
)
602 int32_t current
= 0, asize
= (1 << (64 - assign
->length
)) - 1;
603 struct device_prefix_assignment
*c
;
604 list_for_each_entry(c
, list
, head
) {
605 if (assign
->assigned
!= -1) {
606 if (assign
->assigned
> current
&& assign
->assigned
+ asize
< c
->assigned
) {
607 list_add_tail(&assign
->head
, &c
->head
);
610 } else if (assign
->assigned
== -1) {
611 current
= (current
+ asize
) & (~asize
);
612 if (current
+ asize
< c
->assigned
) {
613 assign
->assigned
= current
;
614 list_add_tail(&assign
->head
, &c
->head
);
618 current
= (c
->assigned
+ (1 << (64 - c
->length
)));
623 static void interface_update_prefix_assignments(struct device_prefix
*prefix
, bool setup
)
625 struct device_prefix_assignment
*c
;
626 struct interface
*iface
;
628 // Delete all assignments
629 while (!list_empty(&prefix
->assignments
)) {
630 c
= list_first_entry(&prefix
->assignments
,
631 struct device_prefix_assignment
, head
);
632 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
633 interface_set_prefix_address(c
, prefix
, iface
, false);
641 // End-of-assignment sentinel
642 c
= malloc(sizeof(*c
) + 1);
643 c
->assigned
= 1 << (64 - prefix
->length
);
646 list_add(&c
->head
, &prefix
->assignments
);
649 if (prefix
->excl_length
> 0) {
650 const char name
[] = "!excluded";
651 c
= malloc(sizeof(*c
) + sizeof(name
));
652 c
->assigned
= ntohl(prefix
->excl_addr
.s6_addr32
[1]) &
653 ((1 << (64 - prefix
->length
)) - 1);
654 c
->length
= prefix
->excl_length
;
655 memcpy(c
->name
, name
, sizeof(name
));
656 list_add(&c
->head
, &prefix
->assignments
);
659 struct list_head assign_later
= LIST_HEAD_INIT(assign_later
);
660 vlist_for_each_element(&interfaces
, iface
, node
) {
661 if (iface
->config_ip
.assignment_length
< 48 ||
662 iface
->config_ip
.assignment_length
> 64)
665 size_t namelen
= strlen(iface
->name
) + 1;
666 c
= malloc(sizeof(*c
) + namelen
);
667 c
->length
= iface
->config_ip
.assignment_length
;
668 c
->assigned
= iface
->config_ip
.assignment_hint
;
670 memcpy(c
->name
, iface
->name
, namelen
);
672 // First process all custom assignments, put all others in later-list
673 if (c
->assigned
== -1 || !interface_prefix_assign(&prefix
->assignments
, c
)) {
674 if (c
->assigned
!= -1) {
676 netifd_log_message(L_WARNING
, "Failed to assign requested subprefix "
677 "of size %hhu for %s, trying other\n", c
->length
, c
->name
);
679 list_add_tail(&c
->head
, &assign_later
);
683 // Then try to assign all other + failed custom assignments
684 while (!list_empty(&assign_later
)) {
685 c
= list_first_entry(&assign_later
, struct device_prefix_assignment
, head
);
688 bool assigned
= false;
690 assigned
= interface_prefix_assign(&prefix
->assignments
, c
);
691 } while (!assigned
&& ++c
->length
<= 64);
694 netifd_log_message(L_WARNING
, "Failed to assign subprefix "
695 "of size %hhu for %s\n", c
->length
, c
->name
);
700 list_for_each_entry(c
, &prefix
->assignments
, head
)
701 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
702 interface_set_prefix_address(c
, prefix
, iface
, true);
706 void interface_refresh_assignments(bool hint
)
708 static bool refresh
= false;
709 if (!hint
&& refresh
) {
710 struct device_prefix
*p
;
711 list_for_each_entry(p
, &prefixes
, head
)
712 interface_update_prefix_assignments(p
, true);
719 interface_update_prefix(struct vlist_tree
*tree
,
720 struct vlist_node
*node_new
,
721 struct vlist_node
*node_old
)
723 struct device_prefix
*prefix_old
, *prefix_new
;
724 prefix_old
= container_of(node_old
, struct device_prefix
, node
);
725 prefix_new
= container_of(node_new
, struct device_prefix
, node
);
727 struct device_route route
;
728 memset(&route
, 0, sizeof(route
));
729 route
.flags
= DEVADDR_INET6
;
730 route
.metric
= INT32_MAX
;
731 route
.mask
= (node_new
) ? prefix_new
->length
: prefix_old
->length
;
732 route
.addr
.in6
= (node_new
) ? prefix_new
->addr
: prefix_old
->addr
;
735 struct device_prefix_assignment
*c
;
736 struct interface
*iface
;
738 if (node_old
&& node_new
) {
739 // Move assignments and refresh addresses to update valid times
740 list_splice(&prefix_old
->assignments
, &prefix_new
->assignments
);
742 list_for_each_entry(c
, &prefix_new
->assignments
, head
)
743 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
744 interface_set_prefix_address(c
, prefix_new
, iface
, true);
745 } else if (node_new
) {
746 // Set null-route to avoid routing loops and set routing policy
747 system_add_route(NULL
, &route
);
748 if (prefix_new
->iface
)
749 set_ipv6_source_policy(true, &route
.addr
, route
.mask
,
750 prefix_new
->iface
->l3_dev
.dev
->ifindex
);
753 interface_update_prefix_assignments(prefix_new
, true);
754 } else if (node_old
) {
755 interface_update_prefix_assignments(prefix_old
, false);
758 if (prefix_old
->iface
)
759 set_ipv6_source_policy(false, &route
.addr
, route
.mask
,
760 prefix_old
->iface
->l3_dev
.dev
->ifindex
);
761 system_del_route(NULL
, &route
);
765 list_del(&prefix_old
->head
);
770 list_add(&prefix_new
->head
, &prefixes
);
774 struct device_prefix
*
775 interface_ip_add_device_prefix(struct interface
*iface
, struct in6_addr
*addr
,
776 uint8_t length
, time_t valid_until
, time_t preferred_until
,
777 struct in6_addr
*excl_addr
, uint8_t excl_length
)
779 struct device_prefix
*prefix
= calloc(1, sizeof(*prefix
));
780 prefix
->length
= length
;
781 prefix
->addr
= *addr
;
782 prefix
->preferred_until
= preferred_until
;
783 prefix
->valid_until
= valid_until
;
784 prefix
->iface
= iface
;
785 INIT_LIST_HEAD(&prefix
->assignments
);
788 prefix
->excl_addr
= *excl_addr
;
789 prefix
->excl_length
= excl_length
;
793 vlist_add(&iface
->proto_ip
.prefix
, &prefix
->node
, &prefix
->addr
);
795 interface_update_prefix(NULL
, &prefix
->node
, NULL
);
801 interface_ip_set_ula_prefix(const char *prefix
)
803 char buf
[INET6_ADDRSTRLEN
+ 4] = {0}, *saveptr
;
805 strncpy(buf
, prefix
, sizeof(buf
) - 1);
806 char *prefixaddr
= strtok_r(buf
, "/", &saveptr
);
808 struct in6_addr addr
;
809 if (!prefixaddr
|| inet_pton(AF_INET6
, prefixaddr
, &addr
) < 1) {
811 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
818 char *prefixlen
= strtok_r(NULL
, ",", &saveptr
);
819 if (!prefixlen
|| (length
= atoi(prefixlen
)) < 1 || length
> 64)
822 if (!ula_prefix
|| !IN6_ARE_ADDR_EQUAL(&addr
, &ula_prefix
->addr
) ||
823 ula_prefix
->length
!= length
) {
825 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
827 ula_prefix
= interface_ip_add_device_prefix(NULL
, &addr
, length
,
832 int interface_ip_resolve_v6_rtable(int ifindex
)
834 return ifindex
+ 1000;
838 interface_add_dns_server(struct interface_ip_settings
*ip
, const char *str
)
840 struct dns_server
*s
;
842 s
= calloc(1, sizeof(*s
));
847 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
851 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
858 D(INTERFACE
, "Add IPv%c DNS server: %s\n",
859 s
->af
== AF_INET6
? '6' : '4', str
);
860 vlist_simple_add(&ip
->dns_servers
, &s
->node
);
864 interface_add_dns_server_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
866 struct blob_attr
*cur
;
869 blobmsg_for_each_attr(cur
, list
, rem
) {
870 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
873 if (!blobmsg_check_attr(cur
, NULL
))
876 interface_add_dns_server(ip
, blobmsg_data(cur
));
881 interface_add_dns_search_domain(struct interface_ip_settings
*ip
, const char *str
)
883 struct dns_search_domain
*s
;
884 int len
= strlen(str
);
886 s
= calloc(1, sizeof(*s
) + len
+ 1);
890 D(INTERFACE
, "Add DNS search domain: %s\n", str
);
891 memcpy(s
->name
, str
, len
);
892 vlist_simple_add(&ip
->dns_search
, &s
->node
);
896 interface_add_dns_search_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
898 struct blob_attr
*cur
;
901 blobmsg_for_each_attr(cur
, list
, rem
) {
902 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
905 if (!blobmsg_check_attr(cur
, NULL
))
908 interface_add_dns_search_domain(ip
, blobmsg_data(cur
));
913 write_resolv_conf_entries(FILE *f
, struct interface_ip_settings
*ip
)
915 struct dns_server
*s
;
916 struct dns_search_domain
*d
;
918 char buf
[INET6_ADDRSTRLEN
];
920 vlist_simple_for_each_element(&ip
->dns_servers
, s
, node
) {
921 str
= inet_ntop(s
->af
, &s
->addr
, buf
, sizeof(buf
));
925 fprintf(f
, "nameserver %s\n", str
);
928 vlist_simple_for_each_element(&ip
->dns_search
, d
, node
) {
929 fprintf(f
, "search %s\n", d
->name
);
934 interface_write_resolv_conf(void)
936 struct interface
*iface
;
937 char *path
= alloca(strlen(resolv_conf
) + 5);
939 uint32_t crcold
, crcnew
;
941 sprintf(path
, "%s.tmp", resolv_conf
);
943 f
= fopen(path
, "w+");
945 D(INTERFACE
, "Failed to open %s for writing\n", path
);
949 vlist_for_each_element(&interfaces
, iface
, node
) {
950 if (iface
->state
!= IFS_UP
)
953 if (vlist_simple_empty(&iface
->proto_ip
.dns_search
) &&
954 vlist_simple_empty(&iface
->proto_ip
.dns_servers
) &&
955 vlist_simple_empty(&iface
->config_ip
.dns_search
) &&
956 vlist_simple_empty(&iface
->config_ip
.dns_servers
))
959 fprintf(f
, "# Interface %s\n", iface
->name
);
960 write_resolv_conf_entries(f
, &iface
->config_ip
);
961 if (!iface
->proto_ip
.no_dns
)
962 write_resolv_conf_entries(f
, &iface
->proto_ip
);
966 crcnew
= crc32_file(f
);
970 f
= fopen(resolv_conf
, "r");
972 crcold
= crc32_file(f
);
976 if (crcold
== crcnew
) {
978 } else if (rename(path
, resolv_conf
) < 0) {
979 D(INTERFACE
, "Failed to replace %s\n", resolv_conf
);
984 void interface_ip_set_enabled(struct interface_ip_settings
*ip
, bool enabled
)
986 struct device_addr
*addr
;
987 struct device_route
*route
;
990 ip
->enabled
= enabled
;
991 dev
= ip
->iface
->l3_dev
.dev
;
995 vlist_for_each_element(&ip
->addr
, addr
, node
) {
996 if (addr
->enabled
== enabled
)
1000 system_add_address(dev
, addr
);
1002 system_del_address(dev
, addr
);
1003 addr
->enabled
= enabled
;
1006 vlist_for_each_element(&ip
->route
, route
, node
) {
1007 bool _enabled
= enabled
;
1009 if (!enable_route(ip
, route
))
1012 if (route
->enabled
== _enabled
)
1016 if (!(route
->flags
& DEVROUTE_METRIC
))
1017 route
->metric
= ip
->iface
->metric
;
1019 system_add_route(dev
, route
);
1021 system_del_route(dev
, route
);
1022 route
->enabled
= _enabled
;
1025 struct device_prefix
*c
;
1026 struct device_prefix_assignment
*a
;
1027 list_for_each_entry(c
, &prefixes
, head
)
1028 list_for_each_entry(a
, &c
->assignments
, head
)
1029 if (!strcmp(a
->name
, ip
->iface
->name
))
1030 interface_set_prefix_address(a
, c
, ip
->iface
, enabled
);
1034 interface_ip_update_start(struct interface_ip_settings
*ip
)
1036 if (ip
!= &ip
->iface
->config_ip
) {
1037 vlist_simple_update(&ip
->dns_servers
);
1038 vlist_simple_update(&ip
->dns_search
);
1040 vlist_update(&ip
->route
);
1041 vlist_update(&ip
->addr
);
1042 vlist_update(&ip
->prefix
);
1046 interface_ip_update_complete(struct interface_ip_settings
*ip
)
1048 vlist_simple_flush(&ip
->dns_servers
);
1049 vlist_simple_flush(&ip
->dns_search
);
1050 vlist_flush(&ip
->route
);
1051 vlist_flush(&ip
->addr
);
1052 vlist_flush(&ip
->prefix
);
1053 interface_write_resolv_conf();
1057 interface_ip_flush(struct interface_ip_settings
*ip
)
1059 if (ip
== &ip
->iface
->proto_ip
)
1060 vlist_flush_all(&ip
->iface
->host_routes
);
1061 vlist_simple_flush_all(&ip
->dns_servers
);
1062 vlist_simple_flush_all(&ip
->dns_search
);
1063 vlist_flush_all(&ip
->route
);
1064 vlist_flush_all(&ip
->addr
);
1065 vlist_flush_all(&ip
->prefix
);
1069 __interface_ip_init(struct interface_ip_settings
*ip
, struct interface
*iface
)
1073 vlist_simple_init(&ip
->dns_search
, struct dns_search_domain
, node
);
1074 vlist_simple_init(&ip
->dns_servers
, struct dns_server
, node
);
1075 vlist_init(&ip
->route
, route_cmp
, interface_update_proto_route
);
1076 vlist_init(&ip
->addr
, addr_cmp
, interface_update_proto_addr
);
1077 vlist_init(&ip
->prefix
, prefix_cmp
, interface_update_prefix
);
1081 interface_ip_init(struct interface
*iface
)
1083 __interface_ip_init(&iface
->proto_ip
, iface
);
1084 __interface_ip_init(&iface
->config_ip
, iface
);
1085 vlist_init(&iface
->host_routes
, route_cmp
, interface_update_host_route
);
1090 interface_ip_valid_until_handler(struct uloop_timeout
*t
)
1092 time_t now
= system_get_rtime();
1093 struct interface
*iface
;
1094 vlist_for_each_element(&interfaces
, iface
, node
) {
1095 if (iface
->state
!= IFS_UP
)
1098 struct device_addr
*addr
, *addrp
;
1099 struct device_route
*route
, *routep
;
1100 struct device_prefix
*pref
, *prefp
;
1102 vlist_for_each_element_safe(&iface
->proto_ip
.addr
, addr
, node
, addrp
)
1103 if (addr
->valid_until
&& addr
->valid_until
< now
)
1104 vlist_delete(&iface
->proto_ip
.addr
, &addr
->node
);
1106 vlist_for_each_element_safe(&iface
->proto_ip
.route
, route
, node
, routep
)
1107 if (route
->valid_until
&& route
->valid_until
< now
)
1108 vlist_delete(&iface
->proto_ip
.route
, &route
->node
);
1110 vlist_for_each_element_safe(&iface
->proto_ip
.prefix
, pref
, node
, prefp
)
1111 if (pref
->valid_until
&& pref
->valid_until
< now
)
1112 vlist_delete(&iface
->proto_ip
.prefix
, &pref
->node
);
1116 uloop_timeout_set(t
, 1000);
1120 interface_ip_init_worker(void)
1122 valid_until_timeout
.cb
= interface_ip_valid_until_handler
;
1123 uloop_timeout_set(&valid_until_timeout
, 1000);