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.
22 #include <arpa/inet.h>
23 #include <netinet/in.h>
27 #include "interface.h"
28 #include "interface-ip.h"
49 static const struct blobmsg_policy route_attr
[__ROUTE_MAX
] = {
50 [ROUTE_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
51 [ROUTE_TARGET
] = { .name
= "target", .type
= BLOBMSG_TYPE_STRING
},
52 [ROUTE_MASK
] = { .name
= "netmask", .type
= BLOBMSG_TYPE_STRING
},
53 [ROUTE_GATEWAY
] = { .name
= "gateway", .type
= BLOBMSG_TYPE_STRING
},
54 [ROUTE_METRIC
] = { .name
= "metric", .type
= BLOBMSG_TYPE_INT32
},
55 [ROUTE_MTU
] = { .name
= "mtu", .type
= BLOBMSG_TYPE_INT32
},
56 [ROUTE_TABLE
] = { .name
= "table", .type
= BLOBMSG_TYPE_STRING
},
57 [ROUTE_VALID
] = { .name
= "valid", .type
= BLOBMSG_TYPE_INT32
},
58 [ROUTE_SOURCE
] = { .name
= "source", .type
= BLOBMSG_TYPE_STRING
},
59 [ROUTE_ONLINK
] = { .name
= "onlink", .type
= BLOBMSG_TYPE_BOOL
},
60 [ROUTE_TYPE
] = { .name
= "type", .type
= BLOBMSG_TYPE_STRING
},
61 [ROUTE_PROTO
] = { .name
= "proto", .type
= BLOBMSG_TYPE_STRING
},
64 const struct uci_blob_param_list route_attr_list
= {
65 .n_params
= __ROUTE_MAX
,
78 static const struct blobmsg_policy neighbor_attr
[__NEIGHBOR_MAX
]={
79 [NEIGHBOR_INTERFACE
]= { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
80 [NEIGHBOR_ADDRESS
]= { .name
= "ipaddr", .type
= BLOBMSG_TYPE_STRING
},
81 [NEIGHBOR_MAC
]= { .name
= "mac", .type
= BLOBMSG_TYPE_STRING
},
82 [NEIGHBOR_PROXY
]= { .name
= "proxy", .type
= BLOBMSG_TYPE_BOOL
},
83 [NEIGHBOR_ROUTER
]= {.name
= "router", .type
= BLOBMSG_TYPE_BOOL
},
86 const struct uci_blob_param_list neighbor_attr_list
= {
87 .n_params
= __NEIGHBOR_MAX
,
88 .params
= neighbor_attr
,
92 struct list_head prefixes
= LIST_HEAD_INIT(prefixes
);
93 static struct device_prefix
*ula_prefix
= NULL
;
94 static struct uloop_timeout valid_until_timeout
;
98 clear_if_addr(union if_addr
*a
, int mask
)
100 int m_bytes
= (mask
+ 7) / 8;
101 uint8_t m_clear
= (1 << (m_bytes
* 8 - mask
)) - 1;
102 uint8_t *p
= (uint8_t *) a
;
104 if (m_bytes
< sizeof(*a
))
105 memset(p
+ m_bytes
, 0, sizeof(*a
) - m_bytes
);
107 p
[m_bytes
- 1] &= ~m_clear
;
111 match_if_addr(union if_addr
*a1
, union if_addr
*a2
, int mask
)
113 union if_addr
*p1
, *p2
;
115 p1
= alloca(sizeof(*a1
));
116 p2
= alloca(sizeof(*a2
));
118 memcpy(p1
, a1
, sizeof(*a1
));
119 clear_if_addr(p1
, mask
);
120 memcpy(p2
, a2
, sizeof(*a2
));
121 clear_if_addr(p2
, mask
);
123 return !memcmp(p1
, p2
, sizeof(*p1
));
126 static int set_ip_source_policy(bool add
, bool v6
, unsigned int priority
,
127 const union if_addr
*addr
, uint8_t mask
, unsigned int table
,
128 struct interface
*in_iface
, const char *action
, bool src
)
130 struct iprule rule
= {
131 .flags
= IPRULE_PRIORITY
,
137 rule
.flags
|= IPRULE_SRC
;
138 rule
.src_addr
= *addr
;
139 rule
.src_mask
= mask
;
141 rule
.flags
|= IPRULE_DEST
;
142 rule
.dest_addr
= *addr
;
143 rule
.dest_mask
= mask
;
148 rule
.flags
|= IPRULE_LOOKUP
;
154 rule
.flags
|= IPRULE_ACTION
;
155 system_resolve_iprule_action(action
, &rule
.action
);
158 if (in_iface
&& in_iface
->l3_dev
.dev
) {
159 rule
.flags
|= IPRULE_IN
;
160 strcpy(rule
.in_dev
, in_iface
->l3_dev
.dev
->ifname
);
163 rule
.flags
|= (v6
) ? IPRULE_INET6
: IPRULE_INET4
;
165 return (add
) ? system_add_iprule(&rule
) : system_del_iprule(&rule
);
168 static int set_ip_lo_policy(bool add
, bool v6
, struct interface
*iface
)
170 struct iprule rule
= {
171 .flags
= IPRULE_IN
| IPRULE_LOOKUP
| IPRULE_PRIORITY
,
172 .priority
= IPRULE_PRIORITY_NW
+ iface
->l3_dev
.dev
->ifindex
,
173 .lookup
= (v6
) ? iface
->ip6table
: iface
->ip4table
,
180 rule
.flags
|= (v6
) ? IPRULE_INET6
: IPRULE_INET4
;
182 return (add
) ? system_add_iprule(&rule
) : system_del_iprule(&rule
);
186 __find_ip_addr_target(struct interface_ip_settings
*ip
, union if_addr
*a
, bool v6
)
188 struct device_addr
*addr
;
190 vlist_for_each_element(&ip
->addr
, addr
, node
) {
194 if (v6
!= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
197 if (((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) &&
198 addr
->point_to_point
&& a
->in
.s_addr
== addr
->point_to_point
)
201 /* Handle offlink addresses correctly */
202 unsigned int mask
= addr
->mask
;
203 if ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
&&
204 (addr
->flags
& DEVADDR_OFFLINK
))
207 if (!match_if_addr(&addr
->addr
, a
, mask
))
217 __find_ip_route_target(struct interface_ip_settings
*ip
, union if_addr
*a
,
218 bool v6
, struct device_route
**res
)
220 struct device_route
*route
;
222 vlist_for_each_element(&ip
->route
, route
, node
) {
226 if (v6
!= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
229 if (!match_if_addr(&route
->addr
, a
, route
->mask
))
232 if (route
->flags
& DEVROUTE_TABLE
)
235 if (!*res
|| route
->mask
> (*res
)->mask
)
241 interface_ip_find_addr_target(struct interface
*iface
, union if_addr
*a
, bool v6
)
243 return __find_ip_addr_target(&iface
->proto_ip
, a
, v6
) ||
244 __find_ip_addr_target(&iface
->config_ip
, a
, v6
);
248 interface_ip_find_route_target(struct interface
*iface
, union if_addr
*a
,
249 bool v6
, struct device_route
**route
)
251 __find_ip_route_target(&iface
->proto_ip
, a
, v6
, route
);
252 __find_ip_route_target(&iface
->config_ip
, a
, v6
, route
);
256 interface_ip_add_target_route(union if_addr
*addr
, bool v6
, struct interface
*iface
)
258 struct device_route
*route
, *r_next
= NULL
;
259 bool defaultroute_target
= false;
260 union if_addr addr_zero
;
261 int addrsize
= v6
? sizeof(addr
->in6
) : sizeof(addr
->in
);
263 memset(&addr_zero
, 0, sizeof(addr_zero
));
264 if (memcmp(&addr_zero
, addr
, addrsize
) == 0)
265 defaultroute_target
= true;
268 /* look for locally addressable target first */
269 if (interface_ip_find_addr_target(iface
, addr
, v6
))
272 /* do not stop at the first route, let the lookup compare
273 * masks to find the best match */
274 interface_ip_find_route_target(iface
, addr
, v6
, &r_next
);
276 vlist_for_each_element(&interfaces
, iface
, node
) {
277 /* look for locally addressable target first */
278 if (interface_ip_find_addr_target(iface
, addr
, v6
))
281 /* do not stop at the first route, let the lookup compare
282 * masks to find the best match */
283 interface_ip_find_route_target(iface
, addr
, v6
, &r_next
);
290 iface
= r_next
->iface
;
291 if (defaultroute_target
)
294 route
= calloc(1, sizeof(*route
));
298 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
299 route
->mask
= v6
? 128 : 32;
300 memcpy(&route
->addr
, addr
, addrsize
);
301 memcpy(&route
->nexthop
, &r_next
->nexthop
, sizeof(route
->nexthop
));
302 route
->mtu
= r_next
->mtu
;
303 route
->metric
= r_next
->metric
;
304 route
->table
= r_next
->table
;
305 route
->iface
= iface
;
306 vlist_add(&iface
->host_routes
, &route
->node
, route
);
312 interface_set_route_info(struct interface
*iface
, struct device_route
*route
)
314 bool v6
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
);
319 if (!(route
->flags
& DEVROUTE_METRIC
))
320 route
->metric
= iface
->metric
;
322 if (!(route
->flags
& DEVROUTE_TABLE
)) {
323 route
->table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
325 route
->flags
|= DEVROUTE_SRCTABLE
;
330 interface_ip_add_neighbor(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
332 struct interface_ip_settings
*ip
;
333 struct blob_attr
*tb
[__NEIGHBOR_MAX
], *cur
;
334 struct device_neighbor
*neighbor
;
335 int af
= v6
? AF_INET6
: AF_INET
;
336 struct ether_addr
*ea
;
338 blobmsg_parse(neighbor_attr
, __NEIGHBOR_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
341 if ((cur
= tb
[NEIGHBOR_INTERFACE
]) == NULL
)
344 iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
349 ip
= &iface
->config_ip
;
351 ip
= &iface
->proto_ip
;
353 neighbor
= calloc(1,sizeof(*neighbor
));
357 neighbor
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
359 if ((cur
= tb
[NEIGHBOR_ADDRESS
]) != NULL
){
360 if (!inet_pton(af
, blobmsg_data(cur
), &neighbor
->addr
))
365 if ((cur
= tb
[NEIGHBOR_MAC
]) != NULL
) {
366 neighbor
->flags
|= DEVNEIGH_MAC
;
367 ea
= ether_aton(blobmsg_data(cur
));
371 memcpy(neighbor
->macaddr
, ea
, 6);
374 if ((cur
= tb
[NEIGHBOR_PROXY
]) != NULL
)
375 neighbor
->proxy
= blobmsg_get_bool(cur
);
377 if ((cur
= tb
[NEIGHBOR_ROUTER
]) != NULL
)
378 neighbor
->router
= blobmsg_get_bool(cur
);
380 vlist_add(&ip
->neighbor
, &neighbor
->node
, neighbor
);
388 interface_ip_add_route(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
390 struct interface_ip_settings
*ip
;
391 struct blob_attr
*tb
[__ROUTE_MAX
], *cur
;
392 struct device_route
*route
;
393 int af
= v6
? AF_INET6
: AF_INET
;
395 blobmsg_parse(route_attr
, __ROUTE_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
398 if ((cur
= tb
[ROUTE_INTERFACE
]) == NULL
)
401 iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
405 ip
= &iface
->config_ip
;
407 ip
= &iface
->proto_ip
;
410 route
= calloc(1, sizeof(*route
));
414 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
415 route
->mask
= v6
? 128 : 32;
416 if ((cur
= tb
[ROUTE_MASK
]) != NULL
) {
417 route
->mask
= parse_netmask_string(blobmsg_data(cur
), v6
);
418 if (route
->mask
> (v6
? 128 : 32))
422 if ((cur
= tb
[ROUTE_TARGET
]) != NULL
) {
423 if (!parse_ip_and_netmask(af
, blobmsg_data(cur
), &route
->addr
, &route
->mask
)) {
424 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur
));
429 if ((cur
= tb
[ROUTE_GATEWAY
]) != NULL
) {
430 if (!inet_pton(af
, blobmsg_data(cur
), &route
->nexthop
)) {
431 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur
));
436 if ((cur
= tb
[ROUTE_METRIC
]) != NULL
) {
437 route
->metric
= blobmsg_get_u32(cur
);
438 route
->flags
|= DEVROUTE_METRIC
;
441 if ((cur
= tb
[ROUTE_MTU
]) != NULL
) {
442 route
->mtu
= blobmsg_get_u32(cur
);
443 route
->flags
|= DEVROUTE_MTU
;
446 /* Use source-based routing */
447 if ((cur
= tb
[ROUTE_SOURCE
]) != NULL
) {
448 char *saveptr
, *source
= alloca(blobmsg_data_len(cur
));
449 memcpy(source
, blobmsg_data(cur
), blobmsg_data_len(cur
));
451 const char *addr
= strtok_r(source
, "/", &saveptr
);
452 const char *mask
= strtok_r(NULL
, "/", &saveptr
);
454 if (!addr
|| inet_pton(af
, addr
, &route
->source
) < 1) {
455 DPRINTF("Failed to parse route source: %s\n", addr
? addr
: "NULL");
459 route
->sourcemask
= (mask
) ? atoi(mask
) : ((af
== AF_INET6
) ? 128 : 32);
462 if ((cur
= tb
[ROUTE_ONLINK
]) != NULL
&& blobmsg_get_bool(cur
))
463 route
->flags
|= DEVROUTE_ONLINK
;
465 if ((cur
= tb
[ROUTE_TABLE
]) != NULL
) {
466 if (!system_resolve_rt_table(blobmsg_data(cur
), &route
->table
)) {
467 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
471 /* only set the table flag if not using the main (default) table */
472 if (system_is_default_rt_table(route
->table
))
476 route
->flags
|= DEVROUTE_TABLE
;
479 if ((cur
= tb
[ROUTE_VALID
]) != NULL
) {
480 int64_t valid
= blobmsg_get_u32(cur
);
481 int64_t valid_until
= valid
+ (int64_t)system_get_rtime();
482 if (valid_until
<= LONG_MAX
&& valid
!= 0xffffffffLL
) /* Catch overflow */
483 route
->valid_until
= valid_until
;
486 if ((cur
= tb
[ROUTE_TYPE
]) != NULL
) {
487 if (!system_resolve_rt_type(blobmsg_data(cur
), &route
->type
)) {
488 DPRINTF("Failed to resolve routing type: %s\n", (char *) blobmsg_data(cur
));
491 route
->flags
|= DEVROUTE_TYPE
;
494 if ((cur
= tb
[ROUTE_PROTO
]) != NULL
) {
495 if (!system_resolve_rt_proto(blobmsg_data(cur
), &route
->proto
)) {
496 DPRINTF("Failed to resolve proto type: %s\n", (char *) blobmsg_data(cur
));
499 route
->flags
|= DEVROUTE_PROTO
;
502 interface_set_route_info(iface
, route
);
503 vlist_add(&ip
->route
, &route
->node
, route
);
511 addr_cmp(const void *k1
, const void *k2
, void *ptr
)
513 const struct device_addr
*a1
= k1
;
514 const struct device_addr
*a2
= k2
;
515 const int cmp_offset
= offsetof(struct device_addr
, flags
);
516 const int cmp_size
= sizeof(struct device_addr
) - cmp_offset
;
518 if (a1
->index
!= a2
->index
)
519 return a1
->index
- a2
->index
;
520 return memcmp(k1
+cmp_offset
, k2
+cmp_offset
, cmp_size
);
524 neighbor_cmp(const void *k1
, const void *k2
, void *ptr
)
526 const struct device_neighbor
*n1
= k1
, *n2
= k2
;
528 return memcmp(&n1
->addr
, &n2
->addr
, sizeof(n2
->addr
));
532 route_cmp(const void *k1
, const void *k2
, void *ptr
)
534 const struct device_route
*r1
= k1
, *r2
= k2
;
536 if (r1
->mask
!= r2
->mask
)
537 return r2
->mask
- r1
->mask
;
539 if (r1
->metric
!= r2
->metric
)
540 return r1
->metric
- r2
->metric
;
542 if (r1
->flags
!= r2
->flags
)
543 return r2
->flags
- r1
->flags
;
545 if (r1
->sourcemask
!= r2
->sourcemask
)
546 return r1
->sourcemask
- r2
->sourcemask
;
548 if (r1
->table
!= r2
->table
)
549 return r1
->table
- r2
->table
;
551 int maskcmp
= memcmp(&r1
->source
, &r2
->source
, sizeof(r1
->source
));
555 return memcmp(&r1
->addr
, &r2
->addr
, sizeof(r1
->addr
));
559 prefix_cmp(const void *k1
, const void *k2
, void *ptr
)
561 return memcmp(k1
, k2
, offsetof(struct device_prefix
, pclass
) -
562 offsetof(struct device_prefix
, addr
));
566 interface_handle_subnet_route(struct interface
*iface
, struct device_addr
*addr
, bool add
)
568 struct device
*dev
= iface
->l3_dev
.dev
;
569 struct device_route
*r
= &addr
->subnet
;
571 if (addr
->flags
& DEVADDR_OFFLINK
)
575 if (!addr
->subnet
.iface
)
578 system_del_route(dev
, r
);
579 memset(r
, 0, sizeof(*r
));
584 r
->flags
= addr
->flags
;
585 r
->mask
= addr
->mask
;
586 memcpy(&r
->addr
, &addr
->addr
, sizeof(r
->addr
));
587 clear_if_addr(&r
->addr
, r
->mask
);
589 if (!system_resolve_rt_proto("kernel", &r
->proto
))
592 r
->flags
|= DEVROUTE_PROTO
;
593 system_del_route(dev
, r
);
595 r
->flags
&= ~DEVROUTE_PROTO
;
596 interface_set_route_info(iface
, r
);
598 system_add_route(dev
, r
);
602 interface_add_addr_rules(struct device_addr
*addr
, bool enabled
)
604 bool v6
= (addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
;
606 set_ip_source_policy(enabled
, v6
, IPRULE_PRIORITY_ADDR
, &addr
->addr
,
607 (v6
) ? 128 : 32, addr
->policy_table
, NULL
, NULL
,
609 set_ip_source_policy(enabled
, v6
, IPRULE_PRIORITY_ADDR_MASK
,
610 &addr
->addr
, addr
->mask
, addr
->policy_table
, NULL
,
615 interface_update_proto_addr(struct vlist_tree
*tree
,
616 struct vlist_node
*node_new
,
617 struct vlist_node
*node_old
)
619 struct interface_ip_settings
*ip
;
620 struct interface
*iface
;
622 struct device_addr
*a_new
= NULL
, *a_old
= NULL
;
623 bool replace
= false;
627 ip
= container_of(tree
, struct interface_ip_settings
, addr
);
629 dev
= iface
->l3_dev
.dev
;
631 if (!node_new
|| !node_old
)
632 iface
->updated
|= IUF_ADDRESS
;
635 a_new
= container_of(node_new
, struct device_addr
, node
);
637 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
&&
640 /* /31 and /32 addressing need 255.255.255.255
641 * as broadcast address. */
642 if (a_new
->mask
>= 31) {
643 a_new
->broadcast
= (uint32_t) ~0;
646 uint32_t *a
= (uint32_t *) &a_new
->addr
;
648 mask
>>= a_new
->mask
;
649 a_new
->broadcast
= *a
| htonl(mask
);
655 a_old
= container_of(node_old
, struct device_addr
, node
);
657 if (a_new
&& a_old
) {
660 if (a_old
->flags
!= a_new
->flags
|| a_old
->failed
)
663 if (a_old
->valid_until
!= a_new
->valid_until
||
664 a_old
->preferred_until
!= a_new
->preferred_until
)
667 if (((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) &&
668 (a_new
->broadcast
!= a_old
->broadcast
||
669 a_new
->point_to_point
!= a_old
->point_to_point
))
674 if (a_old
->enabled
&& !keep
) {
676 * This is needed for source routing to work correctly. If a device
677 * has two connections to a network using the same subnet, adding
678 * only the network-rule will cause packets to be routed through the
679 * first matching network (source IP matches both masks)
681 if (a_old
->policy_table
)
682 interface_add_addr_rules(a_old
, false);
684 if (!(a_old
->flags
& DEVADDR_EXTERNAL
)) {
685 interface_handle_subnet_route(iface
, a_old
, false);
686 system_del_address(dev
, a_old
);
688 if ((a_old
->flags
& DEVADDR_OFFLINK
) && (a_old
->mask
< (v6
? 128 : 32))) {
689 struct device_route route
;
691 memset(&route
, 0, sizeof(route
));
692 route
.flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
693 route
.metric
= INT32_MAX
;
694 route
.mask
= a_old
->mask
;
695 route
.addr
= a_old
->addr
;
697 clear_if_addr(&route
.addr
, route
.mask
);
699 /* Delete null-route */
700 system_del_route(NULL
, &route
);
710 a_new
->enabled
= true;
712 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
)
715 a_new
->policy_table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
717 if (!keep
|| replace
) {
718 if (!(a_new
->flags
& DEVADDR_EXTERNAL
)) {
719 if (system_add_address(dev
, a_new
))
720 a_new
->failed
= true;
722 if (iface
->metric
|| a_new
->policy_table
)
723 interface_handle_subnet_route(iface
, a_new
, true);
727 if (!(a_new
->flags
& DEVADDR_EXTERNAL
) &&
728 (a_new
->flags
& DEVADDR_OFFLINK
) &&
729 (a_new
->mask
< (v6
? 128 : 32))) {
730 struct device_route route
;
732 memset(&route
, 0, sizeof(route
));
733 route
.flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
734 route
.metric
= INT32_MAX
;
735 route
.mask
= a_new
->mask
;
736 route
.addr
= a_new
->addr
;
738 clear_if_addr(&route
.addr
, route
.mask
);
741 * In case off link is specifed as address property
742 * add null-route to avoid routing loops
744 system_add_route(NULL
, &route
);
747 if (a_new
->policy_table
)
748 interface_add_addr_rules(a_new
, true);
755 enable_route(struct interface_ip_settings
*ip
, struct device_route
*route
)
757 if (ip
->no_defaultroute
&& !route
->mask
)
764 interface_update_proto_neighbor(struct vlist_tree
*tree
,
765 struct vlist_node
* node_new
,
766 struct vlist_node
*node_old
)
769 struct device_neighbor
*neighbor_old
, *neighbor_new
;
770 struct interface_ip_settings
*ip
;
773 ip
= container_of(tree
, struct interface_ip_settings
, neighbor
);
774 dev
= ip
->iface
->l3_dev
.dev
;
776 neighbor_old
= container_of(node_old
, struct device_neighbor
, node
);
777 neighbor_new
= container_of(node_new
, struct device_neighbor
, node
);
779 if (node_old
&& node_new
) {
780 keep
= (!memcmp(neighbor_old
->macaddr
, neighbor_new
->macaddr
, sizeof(neighbor_old
->macaddr
)) &&
781 (neighbor_old
->proxy
== neighbor_new
->proxy
) &&
782 (neighbor_old
->router
== neighbor_new
->router
));
786 if (!keep
&& neighbor_old
->enabled
)
787 system_del_neighbor(dev
, neighbor_old
);
793 if (!keep
&& ip
->enabled
)
794 if (system_add_neighbor(dev
, neighbor_new
))
795 neighbor_new
->failed
= true;
797 neighbor_new
->enabled
= ip
->enabled
;
802 interface_update_proto_route(struct vlist_tree
*tree
,
803 struct vlist_node
*node_new
,
804 struct vlist_node
*node_old
)
806 struct interface_ip_settings
*ip
;
807 struct interface
*iface
;
809 struct device_route
*route_old
, *route_new
;
812 ip
= container_of(tree
, struct interface_ip_settings
, route
);
814 dev
= iface
->l3_dev
.dev
;
816 if (!node_new
|| !node_old
)
817 iface
->updated
|= IUF_ROUTE
;
819 route_old
= container_of(node_old
, struct device_route
, node
);
820 route_new
= container_of(node_new
, struct device_route
, node
);
822 if (node_old
&& node_new
)
823 keep
= !memcmp(&route_old
->nexthop
, &route_new
->nexthop
, sizeof(route_old
->nexthop
)) &&
824 (route_old
->mtu
== route_new
->mtu
) && (route_old
->type
== route_new
->type
) &&
825 (route_old
->proto
== route_new
->proto
) && !route_old
->failed
;
828 if (!(route_old
->flags
& DEVADDR_EXTERNAL
) && route_old
->enabled
&& !keep
)
829 system_del_route(dev
, route_old
);
835 bool _enabled
= enable_route(ip
, route_new
);
837 if (!(route_new
->flags
& DEVADDR_EXTERNAL
) && !keep
&& _enabled
)
838 if (system_add_route(dev
, route_new
))
839 route_new
->failed
= true;
841 route_new
->iface
= iface
;
842 route_new
->enabled
= _enabled
;
847 interface_update_host_route(struct vlist_tree
*tree
,
848 struct vlist_node
*node_new
,
849 struct vlist_node
*node_old
)
851 struct interface
*iface
;
853 struct device_route
*route_old
, *route_new
;
855 iface
= container_of(tree
, struct interface
, host_routes
);
856 dev
= iface
->l3_dev
.dev
;
858 route_old
= container_of(node_old
, struct device_route
, node
);
859 route_new
= container_of(node_new
, struct device_route
, node
);
862 system_del_route(dev
, route_old
);
867 if (system_add_route(dev
, route_new
))
868 route_new
->failed
= true;
873 random_ifaceid(struct in6_addr
*addr
)
875 static bool initialized
= false;
880 gettimeofday(&t
, NULL
);
881 seed
= t
.tv_sec
^ t
.tv_usec
^ getpid();
885 addr
->s6_addr32
[2] = (uint32_t)mrand48();
886 addr
->s6_addr32
[3] = (uint32_t)mrand48();
890 eui64_ifaceid(struct interface
*iface
, struct in6_addr
*addr
)
892 struct device_settings st
;
894 device_merge_settings(iface
->l3_dev
.dev
, &st
);
896 if (!(st
.flags
& DEV_OPT_MACADDR
))
899 /* get mac address */
900 uint8_t *ifaceid
= addr
->s6_addr
+ 8;
901 memcpy(ifaceid
, st
.macaddr
, 3);
902 memcpy(ifaceid
+ 5, st
.macaddr
+ 3, 3);
911 generate_ifaceid(struct interface
*iface
, struct in6_addr
*addr
)
915 /* generate new iface id */
916 switch (iface
->assignment_iface_id_selection
) {
919 /* copy host part from assignment_fixed_iface_id */
920 memcpy(addr
->s6_addr
+ 8, iface
->assignment_fixed_iface_id
.s6_addr
+ 8, 8);
923 /* randomize last 64 bits */
924 random_ifaceid(addr
);
928 ret
= eui64_ifaceid(iface
, addr
);
938 interface_set_prefix_address(struct device_prefix_assignment
*assignment
,
939 const struct device_prefix
*prefix
, struct interface
*iface
, bool add
)
941 const struct interface
*uplink
= prefix
->iface
;
942 if (!iface
->l3_dev
.dev
)
945 struct device
*l3_downlink
= iface
->l3_dev
.dev
;
947 struct device_addr addr
;
948 struct device_route route
;
949 memset(&addr
, 0, sizeof(addr
));
950 memset(&route
, 0, sizeof(route
));
952 addr
.addr
.in6
= assignment
->addr
;
953 addr
.mask
= assignment
->length
;
954 addr
.flags
= DEVADDR_INET6
;
955 addr
.preferred_until
= prefix
->preferred_until
;
956 addr
.valid_until
= prefix
->valid_until
;
958 route
.flags
= DEVADDR_INET6
;
959 route
.mask
= addr
.mask
< 64 ? 64 : addr
.mask
;
960 route
.addr
= addr
.addr
;
962 if (!add
&& assignment
->enabled
) {
963 time_t now
= system_get_rtime();
965 addr
.preferred_until
= now
;
966 if (!addr
.valid_until
|| addr
.valid_until
- now
> 7200)
967 addr
.valid_until
= now
+ 7200;
970 set_ip_source_policy(false, true, IPRULE_PRIORITY_ADDR_MASK
, &addr
.addr
,
971 addr
.mask
< 64 ? 64 : addr
.mask
, iface
->ip6table
, NULL
, NULL
, false);
974 if (prefix
->iface
->ip6table
)
975 set_ip_source_policy(false, true, IPRULE_PRIORITY_NW
, &addr
.addr
,
976 addr
.mask
, prefix
->iface
->ip6table
, iface
, NULL
, true);
978 set_ip_source_policy(false, true, IPRULE_PRIORITY_REJECT
, &addr
.addr
,
979 addr
.mask
, 0, iface
, "unreachable", true);
982 clear_if_addr(&route
.addr
, route
.mask
);
983 interface_set_route_info(iface
, &route
);
985 system_del_route(l3_downlink
, &route
);
986 system_add_address(l3_downlink
, &addr
);
988 assignment
->addr
= in6addr_any
;
989 assignment
->enabled
= false;
990 } else if (add
&& (iface
->state
== IFS_UP
|| iface
->state
== IFS_SETUP
)) {
991 if (IN6_IS_ADDR_UNSPECIFIED(&addr
.addr
.in6
)) {
992 addr
.addr
.in6
= prefix
->addr
;
993 addr
.addr
.in6
.s6_addr32
[1] |= htonl(assignment
->assigned
);
994 if (!generate_ifaceid(iface
, &addr
.addr
.in6
))
997 assignment
->addr
= addr
.addr
.in6
;
998 route
.addr
= addr
.addr
;
1001 addr
.flags
|= DEVADDR_OFFLINK
;
1002 if (system_add_address(l3_downlink
, &addr
))
1005 if (!assignment
->enabled
) {
1006 if (iface
->ip6table
)
1007 set_ip_source_policy(true, true, IPRULE_PRIORITY_ADDR_MASK
, &addr
.addr
,
1008 addr
.mask
< 64 ? 64 : addr
.mask
, iface
->ip6table
, NULL
, NULL
, false);
1010 if (prefix
->iface
) {
1011 set_ip_source_policy(true, true, IPRULE_PRIORITY_REJECT
, &addr
.addr
,
1012 addr
.mask
, 0, iface
, "unreachable", true);
1014 if (prefix
->iface
->ip6table
)
1015 set_ip_source_policy(true, true, IPRULE_PRIORITY_NW
, &addr
.addr
,
1016 addr
.mask
, prefix
->iface
->ip6table
, iface
, NULL
, true);
1020 clear_if_addr(&route
.addr
, route
.mask
);
1021 interface_set_route_info(iface
, &route
);
1023 system_add_route(l3_downlink
, &route
);
1025 if (uplink
&& uplink
->l3_dev
.dev
&& !(l3_downlink
->settings
.flags
& DEV_OPT_MTU6
)) {
1026 int mtu
= system_update_ipv6_mtu(uplink
->l3_dev
.dev
, 0);
1027 int mtu_old
= system_update_ipv6_mtu(l3_downlink
, 0);
1029 if (mtu
> 0 && mtu_old
!= mtu
) {
1030 if (system_update_ipv6_mtu(l3_downlink
, mtu
) < 0 && mtu
< mtu_old
)
1031 netifd_log_message(L_WARNING
, "Failed to set IPv6 mtu to %d "
1032 "on interface '%s'\n", mtu
, iface
->name
);
1036 assignment
->enabled
= true;
1040 static bool interface_prefix_assign(struct list_head
*list
,
1041 struct device_prefix_assignment
*assign
)
1043 int32_t current
= 0, asize
= (1 << (64 - assign
->length
)) - 1;
1044 struct device_prefix_assignment
*c
;
1045 list_for_each_entry(c
, list
, head
) {
1046 if (assign
->assigned
!= -1) {
1047 if (assign
->assigned
>= current
&& assign
->assigned
+ asize
< c
->assigned
) {
1048 list_add_tail(&assign
->head
, &c
->head
);
1051 } else if (assign
->assigned
== -1) {
1052 current
= (current
+ asize
) & (~asize
);
1053 if (current
+ asize
< c
->assigned
) {
1054 assign
->assigned
= current
;
1055 list_add_tail(&assign
->head
, &c
->head
);
1059 current
= (c
->assigned
+ (1 << (64 - c
->length
)));
1065 * Sorting of assignment entries:
1066 * Primary on assignment length: smallest assignment first
1067 * Secondary on assignment weight: highest weight first
1068 * Finally alphabetical order of interface names
1070 static int prefix_assignment_cmp(const void *k1
, const void *k2
, void *ptr
)
1072 const struct device_prefix_assignment
*a1
= k1
, *a2
= k2
;
1074 if (a1
->length
!= a2
->length
)
1075 return a1
->length
- a2
->length
;
1077 if (a1
->weight
!= a2
->weight
)
1078 return a2
->weight
- a1
->weight
;
1080 return strcmp(a1
->name
, a2
->name
);
1083 static void interface_update_prefix_assignments(struct device_prefix
*prefix
, bool setup
)
1085 struct device_prefix_assignment
*c
;
1086 struct interface
*iface
;
1088 /* Delete all assignments */
1089 while (!list_empty(&prefix
->assignments
)) {
1090 c
= list_first_entry(&prefix
->assignments
,
1091 struct device_prefix_assignment
, head
);
1092 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1093 interface_set_prefix_address(c
, prefix
, iface
, false);
1101 /* End-of-assignment sentinel */
1102 c
= malloc(sizeof(*c
) + 1);
1106 c
->assigned
= 1 << (64 - prefix
->length
);
1109 c
->addr
= in6addr_any
;
1110 list_add(&c
->head
, &prefix
->assignments
);
1112 /* Excluded prefix */
1113 if (prefix
->excl_length
> 0) {
1114 const char name
[] = "!excluded";
1115 c
= malloc(sizeof(*c
) + sizeof(name
));
1117 c
->assigned
= ntohl(prefix
->excl_addr
.s6_addr32
[1]) &
1118 ((1 << (64 - prefix
->length
)) - 1);
1119 c
->length
= prefix
->excl_length
;
1120 c
->addr
= in6addr_any
;
1121 memcpy(c
->name
, name
, sizeof(name
));
1122 list_add(&c
->head
, &prefix
->assignments
);
1126 bool assigned_any
= false;
1128 struct avl_node node
;
1130 struct avl_tree assign_later
;
1132 avl_init(&assign_later
, prefix_assignment_cmp
, false, NULL
);
1134 vlist_for_each_element(&interfaces
, iface
, node
) {
1135 if (iface
->assignment_length
< 48 ||
1136 iface
->assignment_length
> 64)
1139 /* Test whether there is a matching class */
1140 if (!list_empty(&iface
->assignment_classes
)) {
1143 struct interface_assignment_class
*c
;
1144 list_for_each_entry(c
, &iface
->assignment_classes
, head
) {
1145 if (!strcmp(c
->name
, prefix
->pclass
)) {
1155 size_t namelen
= strlen(iface
->name
) + 1;
1156 c
= malloc(sizeof(*c
) + namelen
);
1160 c
->length
= iface
->assignment_length
;
1161 c
->assigned
= iface
->assignment_hint
;
1162 c
->weight
= iface
->assignment_weight
;
1163 c
->addr
= in6addr_any
;
1165 memcpy(c
->name
, iface
->name
, namelen
);
1167 /* First process all custom assignments, put all others in later-list */
1168 if (c
->assigned
== -1 || !interface_prefix_assign(&prefix
->assignments
, c
)) {
1169 if (c
->assigned
!= -1) {
1171 netifd_log_message(L_WARNING
, "Failed to assign requested subprefix "
1172 "of size %hhu for %s, trying other\n", c
->length
, c
->name
);
1175 entry
= calloc(1, sizeof(*entry
));
1181 entry
->node
.key
= c
;
1182 avl_insert(&assign_later
, &entry
->node
);
1185 if (c
->assigned
!= -1)
1186 assigned_any
= true;
1189 /* Then try to assign all other + failed custom assignments */
1190 avl_for_each_element_safe(&assign_later
, entry
, node
, n_entry
) {
1191 bool assigned
= false;
1193 c
= (struct device_prefix_assignment
*)entry
->node
.key
;
1194 avl_delete(&assign_later
, &entry
->node
);
1197 assigned
= interface_prefix_assign(&prefix
->assignments
, c
);
1198 } while (!assigned
&& ++c
->length
<= 64);
1201 netifd_log_message(L_WARNING
, "Failed to assign subprefix "
1202 "of size %hhu for %s\n", c
->length
, c
->name
);
1205 assigned_any
= true;
1210 list_for_each_entry(c
, &prefix
->assignments
, head
)
1211 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1212 interface_set_prefix_address(c
, prefix
, iface
, true);
1215 netifd_log_message(L_WARNING
, "You have delegated IPv6-prefixes but haven't assigned them "
1216 "to any interface. Did you forget to set option ip6assign on your lan-interfaces?");
1220 void interface_refresh_assignments(bool hint
)
1222 static bool refresh
= false;
1223 if (!hint
&& refresh
) {
1224 struct device_prefix
*p
;
1225 list_for_each_entry(p
, &prefixes
, head
)
1226 interface_update_prefix_assignments(p
, true);
1231 void interface_update_prefix_delegation(struct interface_ip_settings
*ip
)
1233 struct device_prefix
*prefix
;
1235 vlist_for_each_element(&ip
->prefix
, prefix
, node
) {
1236 interface_update_prefix_assignments(prefix
, !ip
->no_delegation
);
1238 if (ip
->no_delegation
) {
1239 if (prefix
->head
.next
)
1240 list_del(&prefix
->head
);
1242 list_add(&prefix
->head
, &prefixes
);
1247 interface_update_prefix(struct vlist_tree
*tree
,
1248 struct vlist_node
*node_new
,
1249 struct vlist_node
*node_old
)
1251 struct device_prefix
*prefix_old
, *prefix_new
;
1252 prefix_old
= container_of(node_old
, struct device_prefix
, node
);
1253 prefix_new
= container_of(node_new
, struct device_prefix
, node
);
1255 struct interface_ip_settings
*ip
= container_of(tree
, struct interface_ip_settings
, prefix
);
1256 if (tree
&& (!node_new
|| !node_old
))
1257 ip
->iface
->updated
|= IUF_PREFIX
;
1259 struct device_route route
;
1260 memset(&route
, 0, sizeof(route
));
1261 route
.flags
= DEVADDR_INET6
;
1262 route
.metric
= INT32_MAX
;
1263 route
.mask
= (node_new
) ? prefix_new
->length
: prefix_old
->length
;
1264 route
.addr
.in6
= (node_new
) ? prefix_new
->addr
: prefix_old
->addr
;
1267 struct device_prefix_assignment
*c
;
1268 struct interface
*iface
;
1270 if (node_old
&& node_new
) {
1271 /* Move assignments and refresh addresses to update valid times */
1272 list_splice(&prefix_old
->assignments
, &prefix_new
->assignments
);
1274 list_for_each_entry(c
, &prefix_new
->assignments
, head
)
1275 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1276 interface_set_prefix_address(c
, prefix_new
, iface
, true);
1278 if (prefix_new
->preferred_until
!= prefix_old
->preferred_until
||
1279 prefix_new
->valid_until
!= prefix_old
->valid_until
)
1280 ip
->iface
->updated
|= IUF_PREFIX
;
1281 } else if (node_new
) {
1282 /* Set null-route to avoid routing loops */
1283 system_add_route(NULL
, &route
);
1285 if (!prefix_new
->iface
|| !prefix_new
->iface
->proto_ip
.no_delegation
)
1286 interface_update_prefix_assignments(prefix_new
, true);
1287 } else if (node_old
) {
1288 /* Remove null-route */
1289 interface_update_prefix_assignments(prefix_old
, false);
1290 system_del_route(NULL
, &route
);
1294 if (prefix_old
->head
.next
)
1295 list_del(&prefix_old
->head
);
1299 if (node_new
&& (!prefix_new
->iface
|| !prefix_new
->iface
->proto_ip
.no_delegation
))
1300 list_add(&prefix_new
->head
, &prefixes
);
1304 struct device_prefix
*
1305 interface_ip_add_device_prefix(struct interface
*iface
, struct in6_addr
*addr
,
1306 uint8_t length
, time_t valid_until
, time_t preferred_until
,
1307 struct in6_addr
*excl_addr
, uint8_t excl_length
, const char *pclass
)
1309 union if_addr a
= { .in6
= *addr
};
1312 pclass
= (iface
) ? iface
->name
: "local";
1314 struct device_prefix
*prefix
= calloc(1, sizeof(*prefix
) + strlen(pclass
) + 1);
1318 clear_if_addr(&a
, length
);
1320 prefix
->length
= length
;
1321 prefix
->addr
= a
.in6
;
1322 prefix
->preferred_until
= preferred_until
;
1323 prefix
->valid_until
= valid_until
;
1324 prefix
->iface
= iface
;
1325 INIT_LIST_HEAD(&prefix
->assignments
);
1328 prefix
->excl_addr
= *excl_addr
;
1329 prefix
->excl_length
= excl_length
;
1332 strcpy(prefix
->pclass
, pclass
);
1335 vlist_add(&iface
->proto_ip
.prefix
, &prefix
->node
, &prefix
->addr
);
1337 interface_update_prefix(NULL
, &prefix
->node
, NULL
);
1343 interface_ip_set_ula_prefix(const char *prefix
)
1345 char buf
[INET6_ADDRSTRLEN
+ 4] = {0}, *saveptr
;
1347 strncpy(buf
, prefix
, sizeof(buf
) - 1);
1348 char *prefixaddr
= strtok_r(buf
, "/", &saveptr
);
1350 struct in6_addr addr
;
1351 if (!prefixaddr
|| inet_pton(AF_INET6
, prefixaddr
, &addr
) < 1) {
1353 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
1360 char *prefixlen
= strtok_r(NULL
, ",", &saveptr
);
1361 if (!prefixlen
|| (length
= atoi(prefixlen
)) < 1 || length
> 64)
1364 if (!ula_prefix
|| !IN6_ARE_ADDR_EQUAL(&addr
, &ula_prefix
->addr
) ||
1365 ula_prefix
->length
!= length
) {
1367 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
1369 ula_prefix
= interface_ip_add_device_prefix(NULL
, &addr
, length
,
1370 0, 0, NULL
, 0, NULL
);
1375 interface_add_dns_server(struct interface_ip_settings
*ip
, const char *str
)
1377 struct dns_server
*s
;
1379 s
= calloc(1, sizeof(*s
));
1384 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
1388 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
1395 D(INTERFACE
, "Add IPv%c DNS server: %s\n",
1396 s
->af
== AF_INET6
? '6' : '4', str
);
1397 vlist_simple_add(&ip
->dns_servers
, &s
->node
);
1401 interface_add_dns_server_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
1403 struct blob_attr
*cur
;
1406 blobmsg_for_each_attr(cur
, list
, rem
) {
1407 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
1410 if (!blobmsg_check_attr(cur
, false))
1413 interface_add_dns_server(ip
, blobmsg_data(cur
));
1418 interface_add_dns_search_domain(struct interface_ip_settings
*ip
, const char *str
)
1420 struct dns_search_domain
*s
;
1421 int len
= strlen(str
);
1423 s
= calloc(1, sizeof(*s
) + len
+ 1);
1427 D(INTERFACE
, "Add DNS search domain: %s\n", str
);
1428 memcpy(s
->name
, str
, len
);
1429 vlist_simple_add(&ip
->dns_search
, &s
->node
);
1433 interface_add_dns_search_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
1435 struct blob_attr
*cur
;
1438 blobmsg_for_each_attr(cur
, list
, rem
) {
1439 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
1442 if (!blobmsg_check_attr(cur
, false))
1445 interface_add_dns_search_domain(ip
, blobmsg_data(cur
));
1450 write_resolv_conf_entries(FILE *f
, struct interface_ip_settings
*ip
, const char *dev
)
1452 struct dns_server
*s
;
1453 struct dns_search_domain
*d
;
1455 char buf
[INET6_ADDRSTRLEN
];
1457 vlist_simple_for_each_element(&ip
->dns_servers
, s
, node
) {
1458 str
= inet_ntop(s
->af
, &s
->addr
, buf
, sizeof(buf
));
1462 if (s
->af
== AF_INET6
&& IN6_IS_ADDR_LINKLOCAL(&s
->addr
.in6
))
1463 fprintf(f
, "nameserver %s%%%s\n", str
, dev
);
1465 fprintf(f
, "nameserver %s\n", str
);
1468 vlist_simple_for_each_element(&ip
->dns_search
, d
, node
) {
1469 fprintf(f
, "search %s\n", d
->name
);
1473 /* Sorting of interface resolver entries : */
1474 /* Primary on interface dns_metric : lowest metric first */
1475 /* Secondary on interface metric : lowest metric first */
1476 /* Finally alphabetical order of interface names */
1477 static int resolv_conf_iface_cmp(const void *k1
, const void *k2
, void *ptr
)
1479 const struct interface
*iface1
= k1
, *iface2
= k2
;
1481 if (iface1
->dns_metric
!= iface2
->dns_metric
)
1482 return iface1
->dns_metric
- iface2
->dns_metric
;
1484 if (iface1
->metric
!= iface2
->metric
)
1485 return iface1
->metric
- iface2
->metric
;
1487 return strcmp(iface1
->name
, iface2
->name
);
1491 __interface_write_dns_entries(FILE *f
, const char *jail
)
1493 struct interface
*iface
;
1495 struct avl_node node
;
1497 struct avl_tree resolv_conf_iface_entries
;
1499 avl_init(&resolv_conf_iface_entries
, resolv_conf_iface_cmp
, false, NULL
);
1501 vlist_for_each_element(&interfaces
, iface
, node
) {
1502 if (iface
->state
!= IFS_UP
)
1505 if (jail
&& (!iface
->jail
|| strcmp(jail
, iface
->jail
)))
1508 if (vlist_simple_empty(&iface
->proto_ip
.dns_search
) &&
1509 vlist_simple_empty(&iface
->proto_ip
.dns_servers
) &&
1510 vlist_simple_empty(&iface
->config_ip
.dns_search
) &&
1511 vlist_simple_empty(&iface
->config_ip
.dns_servers
))
1514 entry
= calloc(1, sizeof(*entry
));
1518 entry
->node
.key
= iface
;
1519 avl_insert(&resolv_conf_iface_entries
, &entry
->node
);
1522 avl_for_each_element(&resolv_conf_iface_entries
, entry
, node
) {
1523 iface
= (struct interface
*)entry
->node
.key
;
1524 struct device
*dev
= iface
->l3_dev
.dev
;
1526 fprintf(f
, "# Interface %s\n", iface
->name
);
1528 write_resolv_conf_entries(f
, &iface
->config_ip
, dev
->ifname
);
1530 if (!iface
->proto_ip
.no_dns
)
1531 write_resolv_conf_entries(f
, &iface
->proto_ip
, dev
->ifname
);
1534 avl_remove_all_elements(&resolv_conf_iface_entries
, entry
, node
, n_entry
)
1539 interface_write_resolv_conf(const char *jail
)
1541 size_t plen
= (jail
? strlen(jail
) + 1 : 0 ) + strlen(resolv_conf
) + 1;
1542 char *path
= alloca(plen
);
1543 char *dpath
= alloca(plen
);
1544 char *tmppath
= alloca(plen
+ 4);
1546 uint32_t crcold
, crcnew
;
1549 sprintf(path
, "/tmp/resolv.conf-%s.d/resolv.conf.auto", jail
);
1550 strcpy(dpath
, path
);
1551 dpath
= dirname(dpath
);
1554 strcpy(path
, resolv_conf
);
1557 sprintf(tmppath
, "%s.tmp", path
);
1559 f
= fopen(tmppath
, "w+");
1561 D(INTERFACE
, "Failed to open %s for writing\n", path
);
1565 __interface_write_dns_entries(f
, jail
);
1569 crcnew
= crc32_file(f
);
1572 crcold
= crcnew
+ 1;
1573 f
= fopen(path
, "r");
1575 crcold
= crc32_file(f
);
1579 if (crcold
== crcnew
) {
1581 } else if (rename(tmppath
, path
) < 0) {
1582 D(INTERFACE
, "Failed to replace %s\n", path
);
1587 void interface_ip_set_enabled(struct interface_ip_settings
*ip
, bool enabled
)
1589 struct device_addr
*addr
;
1590 struct device_route
*route
;
1591 struct device_neighbor
*neighbor
;
1593 struct interface
*iface
;
1595 ip
->enabled
= enabled
;
1597 dev
= iface
->l3_dev
.dev
;
1601 vlist_for_each_element(&ip
->addr
, addr
, node
) {
1602 bool v6
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
) ? true : false;
1604 if (addr
->flags
& DEVADDR_EXTERNAL
)
1607 if (addr
->enabled
== enabled
)
1611 system_add_address(dev
, addr
);
1613 addr
->policy_table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
1614 if (iface
->metric
|| addr
->policy_table
)
1615 interface_handle_subnet_route(iface
, addr
, true);
1617 if ((addr
->flags
& DEVADDR_OFFLINK
) && (addr
->mask
< (v6
? 128 : 32))) {
1618 struct device_route route
;
1620 memset(&route
, 0, sizeof(route
));
1621 route
.flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
1622 route
.metric
= INT32_MAX
;
1623 route
.mask
= addr
->mask
;
1624 route
.addr
= addr
->addr
;
1626 clear_if_addr(&route
.addr
, route
.mask
);
1629 * In case off link is specifed as address property
1630 * add null-route to avoid routing loops
1632 system_add_route(NULL
, &route
);
1635 if (addr
->policy_table
)
1636 interface_add_addr_rules(addr
, true);
1638 interface_handle_subnet_route(iface
, addr
, false);
1639 system_del_address(dev
, addr
);
1641 if ((addr
->flags
& DEVADDR_OFFLINK
) && (addr
->mask
< (v6
? 128 : 32))) {
1642 struct device_route route
;
1644 memset(&route
, 0, sizeof(route
));
1645 route
.flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
1646 route
.metric
= INT32_MAX
;
1647 route
.mask
= addr
->mask
;
1648 route
.addr
= addr
->addr
;
1650 clear_if_addr(&route
.addr
, route
.mask
);
1652 /* Delete null-route */
1653 system_del_route(NULL
, &route
);
1656 if (addr
->policy_table
)
1657 interface_add_addr_rules(addr
, false);
1659 addr
->enabled
= enabled
;
1662 vlist_for_each_element(&ip
->route
, route
, node
) {
1663 bool _enabled
= enabled
;
1665 if (route
->flags
& DEVADDR_EXTERNAL
)
1668 if (!enable_route(ip
, route
))
1670 if (route
->enabled
== _enabled
)
1674 interface_set_route_info(ip
->iface
, route
);
1676 if (system_add_route(dev
, route
))
1677 route
->failed
= true;
1679 system_del_route(dev
, route
);
1681 route
->enabled
= _enabled
;
1684 vlist_for_each_element(&ip
->neighbor
, neighbor
, node
) {
1685 if (neighbor
->enabled
== enabled
)
1689 if(system_add_neighbor(dev
, neighbor
))
1690 neighbor
->failed
= true;
1692 system_del_neighbor(dev
, neighbor
);
1694 neighbor
->enabled
= enabled
;
1697 struct device_prefix
*c
;
1698 struct device_prefix_assignment
*a
;
1699 list_for_each_entry(c
, &prefixes
, head
)
1700 list_for_each_entry(a
, &c
->assignments
, head
)
1701 if (!strcmp(a
->name
, ip
->iface
->name
))
1702 interface_set_prefix_address(a
, c
, ip
->iface
, enabled
);
1704 if (ip
->iface
->policy_rules_set
!= enabled
&&
1705 ip
->iface
->l3_dev
.dev
) {
1706 set_ip_lo_policy(enabled
, true, ip
->iface
);
1707 set_ip_lo_policy(enabled
, false, ip
->iface
);
1709 set_ip_source_policy(enabled
, true, IPRULE_PRIORITY_REJECT
+ ip
->iface
->l3_dev
.dev
->ifindex
,
1710 NULL
, 0, 0, ip
->iface
, "failed_policy", true);
1711 ip
->iface
->policy_rules_set
= enabled
;
1716 interface_ip_update_start(struct interface_ip_settings
*ip
)
1718 if (ip
!= &ip
->iface
->config_ip
) {
1719 vlist_simple_update(&ip
->dns_servers
);
1720 vlist_simple_update(&ip
->dns_search
);
1722 vlist_update(&ip
->route
);
1723 vlist_update(&ip
->addr
);
1724 vlist_update(&ip
->prefix
);
1725 vlist_update(&ip
->neighbor
);
1729 interface_ip_update_complete(struct interface_ip_settings
*ip
)
1731 vlist_simple_flush(&ip
->dns_servers
);
1732 vlist_simple_flush(&ip
->dns_search
);
1733 vlist_flush(&ip
->route
);
1734 vlist_flush(&ip
->addr
);
1735 vlist_flush(&ip
->prefix
);
1736 vlist_flush(&ip
->neighbor
);
1737 interface_write_resolv_conf(ip
->iface
->jail
);
1741 interface_ip_flush(struct interface_ip_settings
*ip
)
1743 if (ip
== &ip
->iface
->proto_ip
)
1744 vlist_flush_all(&ip
->iface
->host_routes
);
1745 vlist_simple_flush_all(&ip
->dns_servers
);
1746 vlist_simple_flush_all(&ip
->dns_search
);
1747 vlist_flush_all(&ip
->route
);
1748 vlist_flush_all(&ip
->addr
);
1749 vlist_flush_all(&ip
->neighbor
);
1750 vlist_flush_all(&ip
->prefix
);
1754 __interface_ip_init(struct interface_ip_settings
*ip
, struct interface
*iface
)
1758 vlist_simple_init(&ip
->dns_search
, struct dns_search_domain
, node
);
1759 vlist_simple_init(&ip
->dns_servers
, struct dns_server
, node
);
1760 vlist_init(&ip
->route
, route_cmp
, interface_update_proto_route
);
1761 vlist_init(&ip
->neighbor
, neighbor_cmp
, interface_update_proto_neighbor
);
1762 vlist_init(&ip
->addr
, addr_cmp
, interface_update_proto_addr
);
1763 vlist_init(&ip
->prefix
, prefix_cmp
, interface_update_prefix
);
1767 interface_ip_init(struct interface
*iface
)
1769 __interface_ip_init(&iface
->proto_ip
, iface
);
1770 __interface_ip_init(&iface
->config_ip
, iface
);
1771 vlist_init(&iface
->host_routes
, route_cmp
, interface_update_host_route
);
1775 interface_ip_valid_until_handler(struct uloop_timeout
*t
)
1777 time_t now
= system_get_rtime();
1778 struct interface
*iface
;
1779 vlist_for_each_element(&interfaces
, iface
, node
) {
1780 if (iface
->state
!= IFS_UP
)
1783 struct device_addr
*addr
, *addrp
;
1784 struct device_route
*route
, *routep
;
1785 struct device_prefix
*pref
, *prefp
;
1787 vlist_for_each_element_safe(&iface
->proto_ip
.addr
, addr
, node
, addrp
)
1788 if (addr
->valid_until
&& addr
->valid_until
< now
)
1789 vlist_delete(&iface
->proto_ip
.addr
, &addr
->node
);
1791 vlist_for_each_element_safe(&iface
->proto_ip
.route
, route
, node
, routep
)
1792 if (route
->valid_until
&& route
->valid_until
< now
)
1793 vlist_delete(&iface
->proto_ip
.route
, &route
->node
);
1795 vlist_for_each_element_safe(&iface
->proto_ip
.prefix
, pref
, node
, prefp
)
1796 if (pref
->valid_until
&& pref
->valid_until
< now
)
1797 vlist_delete(&iface
->proto_ip
.prefix
, &pref
->node
);
1801 uloop_timeout_set(t
, 1000);
1805 interface_ip_init_worker(void)
1807 valid_until_timeout
.cb
= interface_ip_valid_until_handler
;
1808 uloop_timeout_set(&valid_until_timeout
, 1000);