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"
50 static const struct blobmsg_policy route_attr
[__ROUTE_MAX
] = {
51 [ROUTE_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
52 [ROUTE_TARGET
] = { .name
= "target", .type
= BLOBMSG_TYPE_STRING
},
53 [ROUTE_MASK
] = { .name
= "netmask", .type
= BLOBMSG_TYPE_STRING
},
54 [ROUTE_GATEWAY
] = { .name
= "gateway", .type
= BLOBMSG_TYPE_STRING
},
55 [ROUTE_METRIC
] = { .name
= "metric", .type
= BLOBMSG_TYPE_INT32
},
56 [ROUTE_MTU
] = { .name
= "mtu", .type
= BLOBMSG_TYPE_INT32
},
57 [ROUTE_TABLE
] = { .name
= "table", .type
= BLOBMSG_TYPE_STRING
},
58 [ROUTE_VALID
] = { .name
= "valid", .type
= BLOBMSG_TYPE_INT32
},
59 [ROUTE_SOURCE
] = { .name
= "source", .type
= BLOBMSG_TYPE_STRING
},
60 [ROUTE_ONLINK
] = { .name
= "onlink", .type
= BLOBMSG_TYPE_BOOL
},
61 [ROUTE_TYPE
] = { .name
= "type", .type
= BLOBMSG_TYPE_STRING
},
62 [ROUTE_PROTO
] = { .name
= "proto", .type
= BLOBMSG_TYPE_STRING
},
63 [ROUTE_DISABLED
] = { .name
= "disabled", .type
= BLOBMSG_TYPE_BOOL
},
66 const struct uci_blob_param_list route_attr_list
= {
67 .n_params
= __ROUTE_MAX
,
80 static const struct blobmsg_policy neighbor_attr
[__NEIGHBOR_MAX
]={
81 [NEIGHBOR_INTERFACE
]= { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
82 [NEIGHBOR_ADDRESS
]= { .name
= "ipaddr", .type
= BLOBMSG_TYPE_STRING
},
83 [NEIGHBOR_MAC
]= { .name
= "mac", .type
= BLOBMSG_TYPE_STRING
},
84 [NEIGHBOR_PROXY
]= { .name
= "proxy", .type
= BLOBMSG_TYPE_BOOL
},
85 [NEIGHBOR_ROUTER
]= {.name
= "router", .type
= BLOBMSG_TYPE_BOOL
},
88 const struct uci_blob_param_list neighbor_attr_list
= {
89 .n_params
= __NEIGHBOR_MAX
,
90 .params
= neighbor_attr
,
94 struct list_head prefixes
= LIST_HEAD_INIT(prefixes
);
95 static struct device_prefix
*ula_prefix
= NULL
;
96 static struct uloop_timeout valid_until_timeout
;
100 clear_if_addr(union if_addr
*a
, int mask
)
102 int m_bytes
= (mask
+ 7) / 8;
103 uint8_t m_clear
= (1 << (m_bytes
* 8 - mask
)) - 1;
104 uint8_t *p
= (uint8_t *) a
;
106 if (m_bytes
< sizeof(*a
))
107 memset(p
+ m_bytes
, 0, sizeof(*a
) - m_bytes
);
109 p
[m_bytes
- 1] &= ~m_clear
;
113 match_if_addr(union if_addr
*a1
, union if_addr
*a2
, int mask
)
115 union if_addr
*p1
, *p2
;
117 p1
= alloca(sizeof(*a1
));
118 p2
= alloca(sizeof(*a2
));
120 memcpy(p1
, a1
, sizeof(*a1
));
121 clear_if_addr(p1
, mask
);
122 memcpy(p2
, a2
, sizeof(*a2
));
123 clear_if_addr(p2
, mask
);
125 return !memcmp(p1
, p2
, sizeof(*p1
));
128 static int set_ip_source_policy(bool add
, bool v6
, unsigned int priority
,
129 const union if_addr
*addr
, uint8_t mask
, unsigned int table
,
130 struct interface
*in_iface
, const char *action
, bool src
)
132 struct iprule rule
= {
133 .flags
= IPRULE_PRIORITY
,
139 rule
.flags
|= IPRULE_SRC
;
140 rule
.src_addr
= *addr
;
141 rule
.src_mask
= mask
;
143 rule
.flags
|= IPRULE_DEST
;
144 rule
.dest_addr
= *addr
;
145 rule
.dest_mask
= mask
;
150 rule
.flags
|= IPRULE_LOOKUP
;
156 rule
.flags
|= IPRULE_ACTION
;
157 system_resolve_iprule_action(action
, &rule
.action
);
160 if (in_iface
&& in_iface
->l3_dev
.dev
) {
161 rule
.flags
|= IPRULE_IN
;
162 strcpy(rule
.in_dev
, in_iface
->l3_dev
.dev
->ifname
);
165 rule
.flags
|= (v6
) ? IPRULE_INET6
: IPRULE_INET4
;
167 return (add
) ? system_add_iprule(&rule
) : system_del_iprule(&rule
);
170 static int set_ip_lo_policy(bool add
, bool v6
, struct interface
*iface
)
172 struct iprule rule
= {
173 .flags
= IPRULE_IN
| IPRULE_LOOKUP
| IPRULE_PRIORITY
,
174 .priority
= IPRULE_PRIORITY_NW
+ iface
->l3_dev
.dev
->ifindex
,
175 .lookup
= (v6
) ? iface
->ip6table
: iface
->ip4table
,
182 rule
.flags
|= (v6
) ? IPRULE_INET6
: IPRULE_INET4
;
184 return (add
) ? system_add_iprule(&rule
) : system_del_iprule(&rule
);
188 __find_ip_addr_target(struct interface_ip_settings
*ip
, union if_addr
*a
, bool v6
)
190 struct device_addr
*addr
;
192 vlist_for_each_element(&ip
->addr
, addr
, node
) {
196 if (v6
!= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
199 if (((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) &&
200 addr
->point_to_point
&& a
->in
.s_addr
== addr
->point_to_point
)
203 /* Handle offlink addresses correctly */
204 unsigned int mask
= addr
->mask
;
205 if ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
&&
206 (addr
->flags
& DEVADDR_OFFLINK
))
209 if (!match_if_addr(&addr
->addr
, a
, mask
))
219 __find_ip_route_target(struct interface_ip_settings
*ip
, union if_addr
*a
,
220 bool v6
, struct device_route
**res
)
222 struct device_route
*route
;
224 vlist_for_each_element(&ip
->route
, route
, node
) {
228 if (v6
!= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
231 if (!match_if_addr(&route
->addr
, a
, route
->mask
))
234 if (route
->flags
& DEVROUTE_TABLE
)
237 if (!*res
|| route
->mask
> (*res
)->mask
||
238 ((route
->mask
== (*res
)->mask
) && (route
->flags
& DEVROUTE_METRIC
)
239 && (route
->metric
< (*res
)->metric
)))
245 interface_ip_find_addr_target(struct interface
*iface
, union if_addr
*a
, bool v6
)
247 return __find_ip_addr_target(&iface
->proto_ip
, a
, v6
) ||
248 __find_ip_addr_target(&iface
->config_ip
, a
, v6
);
252 interface_ip_find_route_target(struct interface
*iface
, union if_addr
*a
,
253 bool v6
, struct device_route
**route
)
255 __find_ip_route_target(&iface
->proto_ip
, a
, v6
, route
);
256 __find_ip_route_target(&iface
->config_ip
, a
, v6
, route
);
260 interface_ip_add_target_route(union if_addr
*addr
, bool v6
, struct interface
*iface
)
262 struct device_route
*route
, *r_next
= NULL
;
263 bool defaultroute_target
= false;
264 union if_addr addr_zero
;
265 int addrsize
= v6
? sizeof(addr
->in6
) : sizeof(addr
->in
);
267 memset(&addr_zero
, 0, sizeof(addr_zero
));
268 if (memcmp(&addr_zero
, addr
, addrsize
) == 0)
269 defaultroute_target
= true;
272 /* look for locally addressable target first */
273 if (interface_ip_find_addr_target(iface
, addr
, v6
))
276 /* do not stop at the first route, let the lookup compare
277 * masks to find the best match */
278 interface_ip_find_route_target(iface
, addr
, v6
, &r_next
);
280 vlist_for_each_element(&interfaces
, iface
, node
) {
281 /* look for locally addressable target first */
282 if (interface_ip_find_addr_target(iface
, addr
, v6
))
285 /* do not stop at the first route, let the lookup compare
286 * masks to find the best match */
287 interface_ip_find_route_target(iface
, addr
, v6
, &r_next
);
294 iface
= r_next
->iface
;
295 if (defaultroute_target
)
298 route
= calloc(1, sizeof(*route
));
302 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
303 route
->mask
= v6
? 128 : 32;
304 memcpy(&route
->addr
, addr
, addrsize
);
305 memcpy(&route
->nexthop
, &r_next
->nexthop
, sizeof(route
->nexthop
));
306 route
->mtu
= r_next
->mtu
;
307 route
->metric
= r_next
->metric
;
308 route
->table
= r_next
->table
;
309 route
->iface
= iface
;
310 vlist_add(&iface
->host_routes
, &route
->node
, route
);
316 interface_set_route_info(struct interface
*iface
, struct device_route
*route
)
318 bool v6
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
);
323 if (!(route
->flags
& DEVROUTE_METRIC
))
324 route
->metric
= iface
->metric
;
326 if (!(route
->flags
& DEVROUTE_TABLE
)) {
327 route
->table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
329 route
->flags
|= DEVROUTE_SRCTABLE
;
334 interface_ip_add_neighbor(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
336 struct interface_ip_settings
*ip
;
337 struct blob_attr
*tb
[__NEIGHBOR_MAX
], *cur
;
338 struct device_neighbor
*neighbor
;
339 int af
= v6
? AF_INET6
: AF_INET
;
340 struct ether_addr
*ea
;
342 blobmsg_parse(neighbor_attr
, __NEIGHBOR_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
345 if ((cur
= tb
[NEIGHBOR_INTERFACE
]) == NULL
)
348 iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
353 ip
= &iface
->config_ip
;
355 ip
= &iface
->proto_ip
;
357 neighbor
= calloc(1,sizeof(*neighbor
));
361 neighbor
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
363 if ((cur
= tb
[NEIGHBOR_ADDRESS
]) != NULL
){
364 if (!inet_pton(af
, blobmsg_data(cur
), &neighbor
->addr
))
369 if ((cur
= tb
[NEIGHBOR_MAC
]) != NULL
) {
370 neighbor
->flags
|= DEVNEIGH_MAC
;
371 ea
= ether_aton(blobmsg_data(cur
));
375 memcpy(neighbor
->macaddr
, ea
, 6);
378 if ((cur
= tb
[NEIGHBOR_PROXY
]) != NULL
)
379 neighbor
->proxy
= blobmsg_get_bool(cur
);
381 if ((cur
= tb
[NEIGHBOR_ROUTER
]) != NULL
)
382 neighbor
->router
= blobmsg_get_bool(cur
);
384 vlist_add(&ip
->neighbor
, &neighbor
->node
, neighbor
);
392 interface_ip_add_route(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
394 struct interface_ip_settings
*ip
;
395 struct blob_attr
*tb
[__ROUTE_MAX
], *cur
;
396 struct device_route
*route
;
397 int af
= v6
? AF_INET6
: AF_INET
;
399 blobmsg_parse(route_attr
, __ROUTE_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
401 if ((cur
= tb
[ROUTE_DISABLED
]) != NULL
&& blobmsg_get_bool(cur
))
405 if ((cur
= tb
[ROUTE_INTERFACE
]) == NULL
)
408 iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
412 ip
= &iface
->config_ip
;
414 ip
= &iface
->proto_ip
;
417 route
= calloc(1, sizeof(*route
));
421 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
422 route
->mask
= v6
? 128 : 32;
423 if ((cur
= tb
[ROUTE_MASK
]) != NULL
) {
424 route
->mask
= parse_netmask_string(blobmsg_data(cur
), v6
);
425 if (route
->mask
> (v6
? 128 : 32))
429 if ((cur
= tb
[ROUTE_TARGET
]) != NULL
) {
430 if (!parse_ip_and_netmask(af
, blobmsg_data(cur
), &route
->addr
, &route
->mask
)) {
431 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur
));
436 if ((cur
= tb
[ROUTE_GATEWAY
]) != NULL
) {
437 if (!inet_pton(af
, blobmsg_data(cur
), &route
->nexthop
)) {
438 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur
));
443 if ((cur
= tb
[ROUTE_METRIC
]) != NULL
) {
444 route
->metric
= blobmsg_get_u32(cur
);
445 route
->flags
|= DEVROUTE_METRIC
;
448 if ((cur
= tb
[ROUTE_MTU
]) != NULL
) {
449 route
->mtu
= blobmsg_get_u32(cur
);
450 route
->flags
|= DEVROUTE_MTU
;
453 /* Use source-based routing */
454 if ((cur
= tb
[ROUTE_SOURCE
]) != NULL
) {
455 char *saveptr
, *source
= alloca(blobmsg_data_len(cur
));
456 memcpy(source
, blobmsg_data(cur
), blobmsg_data_len(cur
));
458 const char *addr
= strtok_r(source
, "/", &saveptr
);
459 const char *mask
= strtok_r(NULL
, "/", &saveptr
);
461 if (!addr
|| inet_pton(af
, addr
, &route
->source
) < 1) {
462 DPRINTF("Failed to parse route source: %s\n", addr
? addr
: "NULL");
466 route
->sourcemask
= (mask
) ? atoi(mask
) : ((af
== AF_INET6
) ? 128 : 32);
469 if ((cur
= tb
[ROUTE_ONLINK
]) != NULL
&& blobmsg_get_bool(cur
))
470 route
->flags
|= DEVROUTE_ONLINK
;
472 if ((cur
= tb
[ROUTE_TABLE
]) != NULL
) {
473 if (!system_resolve_rt_table(blobmsg_data(cur
), &route
->table
)) {
474 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
478 /* only set the table flag if not using the main (default) table */
479 if (system_is_default_rt_table(route
->table
))
483 route
->flags
|= DEVROUTE_TABLE
;
486 if ((cur
= tb
[ROUTE_VALID
]) != NULL
) {
487 int64_t valid
= blobmsg_get_u32(cur
);
488 int64_t valid_until
= valid
+ (int64_t)system_get_rtime();
489 if (valid_until
<= LONG_MAX
&& valid
!= 0xffffffffLL
) /* Catch overflow */
490 route
->valid_until
= valid_until
;
493 if ((cur
= tb
[ROUTE_TYPE
]) != NULL
) {
494 if (!system_resolve_rt_type(blobmsg_data(cur
), &route
->type
)) {
495 DPRINTF("Failed to resolve routing type: %s\n", (char *) blobmsg_data(cur
));
498 route
->flags
|= DEVROUTE_TYPE
;
501 if ((cur
= tb
[ROUTE_PROTO
]) != NULL
) {
502 if (!system_resolve_rt_proto(blobmsg_data(cur
), &route
->proto
)) {
503 DPRINTF("Failed to resolve proto type: %s\n", (char *) blobmsg_data(cur
));
506 route
->flags
|= DEVROUTE_PROTO
;
509 interface_set_route_info(iface
, route
);
510 vlist_add(&ip
->route
, &route
->node
, route
);
518 addr_cmp(const void *k1
, const void *k2
, void *ptr
)
520 const struct device_addr
*a1
= k1
;
521 const struct device_addr
*a2
= k2
;
522 const int cmp_offset
= offsetof(struct device_addr
, flags
);
523 const int cmp_size
= sizeof(struct device_addr
) - cmp_offset
;
525 if (a1
->index
!= a2
->index
)
526 return a1
->index
- a2
->index
;
527 return memcmp(k1
+cmp_offset
, k2
+cmp_offset
, cmp_size
);
531 neighbor_cmp(const void *k1
, const void *k2
, void *ptr
)
533 const struct device_neighbor
*n1
= k1
, *n2
= k2
;
535 return memcmp(&n1
->addr
, &n2
->addr
, sizeof(n2
->addr
));
539 route_cmp(const void *k1
, const void *k2
, void *ptr
)
541 const struct device_route
*r1
= k1
, *r2
= k2
;
543 if (r1
->mask
!= r2
->mask
)
544 return r2
->mask
- r1
->mask
;
546 if (r1
->metric
!= r2
->metric
)
547 return r1
->metric
- r2
->metric
;
549 if (r1
->flags
!= r2
->flags
)
550 return r2
->flags
- r1
->flags
;
552 if (r1
->sourcemask
!= r2
->sourcemask
)
553 return r1
->sourcemask
- r2
->sourcemask
;
555 if (r1
->table
!= r2
->table
)
556 return r1
->table
- r2
->table
;
558 int maskcmp
= memcmp(&r1
->source
, &r2
->source
, sizeof(r1
->source
));
562 return memcmp(&r1
->addr
, &r2
->addr
, sizeof(r1
->addr
));
566 prefix_cmp(const void *k1
, const void *k2
, void *ptr
)
568 return memcmp(k1
, k2
, offsetof(struct device_prefix
, pclass
) -
569 offsetof(struct device_prefix
, addr
));
573 interface_handle_subnet_route(struct interface
*iface
, struct device_addr
*addr
, bool add
)
575 struct device
*dev
= iface
->l3_dev
.dev
;
576 struct device_route
*r
= &addr
->subnet
;
578 if (addr
->flags
& DEVADDR_OFFLINK
)
582 if (!addr
->subnet
.iface
)
585 system_del_route(dev
, r
);
586 memset(r
, 0, sizeof(*r
));
591 r
->flags
= addr
->flags
;
592 r
->mask
= addr
->mask
;
593 memcpy(&r
->addr
, &addr
->addr
, sizeof(r
->addr
));
594 clear_if_addr(&r
->addr
, r
->mask
);
596 if (!system_resolve_rt_proto("kernel", &r
->proto
))
599 r
->flags
|= DEVROUTE_PROTO
;
600 system_del_route(dev
, r
);
602 r
->flags
&= ~DEVROUTE_PROTO
;
603 interface_set_route_info(iface
, r
);
605 system_add_route(dev
, r
);
609 interface_add_addr_rules(struct device_addr
*addr
, bool enabled
)
611 bool v6
= (addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
;
613 set_ip_source_policy(enabled
, v6
, IPRULE_PRIORITY_ADDR
, &addr
->addr
,
614 (v6
) ? 128 : 32, addr
->policy_table
, NULL
, NULL
,
616 set_ip_source_policy(enabled
, v6
, IPRULE_PRIORITY_ADDR_MASK
,
617 &addr
->addr
, addr
->mask
, addr
->policy_table
, NULL
,
622 interface_update_proto_addr(struct vlist_tree
*tree
,
623 struct vlist_node
*node_new
,
624 struct vlist_node
*node_old
)
626 struct interface_ip_settings
*ip
;
627 struct interface
*iface
;
629 struct device_addr
*a_new
= NULL
, *a_old
= NULL
;
630 bool replace
= false;
634 ip
= container_of(tree
, struct interface_ip_settings
, addr
);
636 dev
= iface
->l3_dev
.dev
;
638 if (!node_new
|| !node_old
)
639 iface
->updated
|= IUF_ADDRESS
;
642 a_new
= container_of(node_new
, struct device_addr
, node
);
644 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
&&
647 /* /31 and /32 addressing need 255.255.255.255
648 * as broadcast address. */
649 if (a_new
->mask
>= 31) {
650 a_new
->broadcast
= (uint32_t) ~0;
653 uint32_t *a
= (uint32_t *) &a_new
->addr
;
655 mask
>>= a_new
->mask
;
656 a_new
->broadcast
= *a
| htonl(mask
);
662 a_old
= container_of(node_old
, struct device_addr
, node
);
664 if (a_new
&& a_old
) {
667 if (a_old
->flags
!= a_new
->flags
|| a_old
->failed
)
670 if (a_old
->valid_until
!= a_new
->valid_until
||
671 a_old
->preferred_until
!= a_new
->preferred_until
)
674 if (((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) &&
675 (a_new
->broadcast
!= a_old
->broadcast
||
676 a_new
->point_to_point
!= a_old
->point_to_point
))
681 if (a_old
->enabled
&& !keep
) {
683 * This is needed for source routing to work correctly. If a device
684 * has two connections to a network using the same subnet, adding
685 * only the network-rule will cause packets to be routed through the
686 * first matching network (source IP matches both masks)
688 if (a_old
->policy_table
)
689 interface_add_addr_rules(a_old
, false);
691 if (!(a_old
->flags
& DEVADDR_EXTERNAL
)) {
692 interface_handle_subnet_route(iface
, a_old
, false);
693 system_del_address(dev
, a_old
);
695 if ((a_old
->flags
& DEVADDR_OFFLINK
) && (a_old
->mask
< (v6
? 128 : 32))) {
696 struct device_route route
;
698 memset(&route
, 0, sizeof(route
));
699 route
.flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
700 route
.metric
= INT32_MAX
;
701 route
.mask
= a_old
->mask
;
702 route
.addr
= a_old
->addr
;
704 clear_if_addr(&route
.addr
, route
.mask
);
706 /* Delete null-route */
707 system_del_route(NULL
, &route
);
717 a_new
->enabled
= true;
719 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
)
722 a_new
->policy_table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
724 if (!keep
|| replace
) {
725 if (!(a_new
->flags
& DEVADDR_EXTERNAL
)) {
726 if (system_add_address(dev
, a_new
))
727 a_new
->failed
= true;
729 if (iface
->metric
|| a_new
->policy_table
)
730 interface_handle_subnet_route(iface
, a_new
, true);
734 if (!(a_new
->flags
& DEVADDR_EXTERNAL
) &&
735 (a_new
->flags
& DEVADDR_OFFLINK
) &&
736 (a_new
->mask
< (v6
? 128 : 32))) {
737 struct device_route route
;
739 memset(&route
, 0, sizeof(route
));
740 route
.flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
741 route
.metric
= INT32_MAX
;
742 route
.mask
= a_new
->mask
;
743 route
.addr
= a_new
->addr
;
745 clear_if_addr(&route
.addr
, route
.mask
);
748 * In case off link is specifed as address property
749 * add null-route to avoid routing loops
751 system_add_route(NULL
, &route
);
754 if (a_new
->policy_table
)
755 interface_add_addr_rules(a_new
, true);
762 enable_route(struct interface_ip_settings
*ip
, struct device_route
*route
)
764 if (ip
->no_defaultroute
&& !route
->mask
)
771 interface_update_proto_neighbor(struct vlist_tree
*tree
,
772 struct vlist_node
* node_new
,
773 struct vlist_node
*node_old
)
776 struct device_neighbor
*neighbor_old
, *neighbor_new
;
777 struct interface_ip_settings
*ip
;
780 ip
= container_of(tree
, struct interface_ip_settings
, neighbor
);
781 dev
= ip
->iface
->l3_dev
.dev
;
783 neighbor_old
= container_of(node_old
, struct device_neighbor
, node
);
784 neighbor_new
= container_of(node_new
, struct device_neighbor
, node
);
786 if (node_old
&& node_new
) {
787 keep
= (!memcmp(neighbor_old
->macaddr
, neighbor_new
->macaddr
, sizeof(neighbor_old
->macaddr
)) &&
788 (neighbor_old
->proxy
== neighbor_new
->proxy
) &&
789 (neighbor_old
->router
== neighbor_new
->router
));
793 if (!keep
&& neighbor_old
->enabled
)
794 system_del_neighbor(dev
, neighbor_old
);
800 if (!keep
&& ip
->enabled
)
801 if (system_add_neighbor(dev
, neighbor_new
))
802 neighbor_new
->failed
= true;
804 neighbor_new
->enabled
= ip
->enabled
;
809 interface_update_proto_route(struct vlist_tree
*tree
,
810 struct vlist_node
*node_new
,
811 struct vlist_node
*node_old
)
813 struct interface_ip_settings
*ip
;
814 struct interface
*iface
;
816 struct device_route
*route_old
, *route_new
;
819 ip
= container_of(tree
, struct interface_ip_settings
, route
);
821 dev
= iface
->l3_dev
.dev
;
823 if (!node_new
|| !node_old
)
824 iface
->updated
|= IUF_ROUTE
;
826 route_old
= container_of(node_old
, struct device_route
, node
);
827 route_new
= container_of(node_new
, struct device_route
, node
);
829 if (node_old
&& node_new
)
830 keep
= !memcmp(&route_old
->nexthop
, &route_new
->nexthop
, sizeof(route_old
->nexthop
)) &&
831 (route_old
->mtu
== route_new
->mtu
) && (route_old
->type
== route_new
->type
) &&
832 (route_old
->proto
== route_new
->proto
) && !route_old
->failed
;
835 if (!(route_old
->flags
& DEVADDR_EXTERNAL
) && route_old
->enabled
&& !keep
)
836 system_del_route(dev
, route_old
);
842 bool _enabled
= enable_route(ip
, route_new
);
844 if (!(route_new
->flags
& DEVADDR_EXTERNAL
) && !keep
&& _enabled
)
845 if (system_add_route(dev
, route_new
))
846 route_new
->failed
= true;
848 route_new
->iface
= iface
;
849 route_new
->enabled
= _enabled
;
854 interface_update_host_route(struct vlist_tree
*tree
,
855 struct vlist_node
*node_new
,
856 struct vlist_node
*node_old
)
858 struct interface
*iface
;
860 struct device_route
*route_old
, *route_new
;
862 iface
= container_of(tree
, struct interface
, host_routes
);
863 dev
= iface
->l3_dev
.dev
;
865 route_old
= container_of(node_old
, struct device_route
, node
);
866 route_new
= container_of(node_new
, struct device_route
, node
);
869 system_del_route(dev
, route_old
);
874 if (system_add_route(dev
, route_new
))
875 route_new
->failed
= true;
880 random_ifaceid(struct in6_addr
*addr
)
882 static bool initialized
= false;
887 gettimeofday(&t
, NULL
);
888 seed
= t
.tv_sec
^ t
.tv_usec
^ getpid();
892 addr
->s6_addr32
[2] = (uint32_t)mrand48();
893 addr
->s6_addr32
[3] = (uint32_t)mrand48();
897 eui64_ifaceid(struct interface
*iface
, struct in6_addr
*addr
)
899 struct device_settings st
;
901 device_merge_settings(iface
->l3_dev
.dev
, &st
);
903 if (!(st
.flags
& DEV_OPT_MACADDR
))
906 /* get mac address */
907 uint8_t *ifaceid
= addr
->s6_addr
+ 8;
908 memcpy(ifaceid
, st
.macaddr
, 3);
909 memcpy(ifaceid
+ 5, st
.macaddr
+ 3, 3);
918 generate_ifaceid(struct interface
*iface
, struct in6_addr
*addr
)
922 /* generate new iface id */
923 switch (iface
->assignment_iface_id_selection
) {
926 /* copy host part from assignment_fixed_iface_id */
927 memcpy(addr
->s6_addr
+ 8, iface
->assignment_fixed_iface_id
.s6_addr
+ 8, 8);
930 /* randomize last 64 bits */
931 random_ifaceid(addr
);
935 ret
= eui64_ifaceid(iface
, addr
);
945 interface_set_prefix_address(struct device_prefix_assignment
*assignment
,
946 const struct device_prefix
*prefix
, struct interface
*iface
, bool add
)
948 const struct interface
*uplink
= prefix
->iface
;
949 if (!iface
->l3_dev
.dev
)
952 struct device
*l3_downlink
= iface
->l3_dev
.dev
;
954 struct device_addr addr
;
955 struct device_route route
;
956 memset(&addr
, 0, sizeof(addr
));
957 memset(&route
, 0, sizeof(route
));
959 addr
.addr
.in6
= assignment
->addr
;
960 addr
.mask
= assignment
->length
;
961 addr
.flags
= DEVADDR_INET6
;
962 addr
.preferred_until
= prefix
->preferred_until
;
963 addr
.valid_until
= prefix
->valid_until
;
965 route
.flags
= DEVADDR_INET6
;
966 route
.mask
= addr
.mask
< 64 ? 64 : addr
.mask
;
967 route
.addr
= addr
.addr
;
969 if (!add
&& assignment
->enabled
) {
970 time_t now
= system_get_rtime();
972 addr
.preferred_until
= now
;
973 if (!addr
.valid_until
|| addr
.valid_until
- now
> 7200)
974 addr
.valid_until
= now
+ 7200;
977 set_ip_source_policy(false, true, IPRULE_PRIORITY_ADDR_MASK
, &addr
.addr
,
978 addr
.mask
< 64 ? 64 : addr
.mask
, iface
->ip6table
, NULL
, NULL
, false);
981 if (prefix
->iface
->ip6table
)
982 set_ip_source_policy(false, true, IPRULE_PRIORITY_NW
, &addr
.addr
,
983 addr
.mask
, prefix
->iface
->ip6table
, iface
, NULL
, true);
985 set_ip_source_policy(false, true, IPRULE_PRIORITY_REJECT
, &addr
.addr
,
986 addr
.mask
, 0, iface
, "unreachable", true);
989 clear_if_addr(&route
.addr
, route
.mask
);
990 interface_set_route_info(iface
, &route
);
992 system_del_route(l3_downlink
, &route
);
993 system_add_address(l3_downlink
, &addr
);
995 assignment
->addr
= in6addr_any
;
996 assignment
->enabled
= false;
997 } else if (add
&& (iface
->state
== IFS_UP
|| iface
->state
== IFS_SETUP
)) {
998 if (IN6_IS_ADDR_UNSPECIFIED(&addr
.addr
.in6
)) {
999 addr
.addr
.in6
= prefix
->addr
;
1000 addr
.addr
.in6
.s6_addr32
[1] |= htonl(assignment
->assigned
);
1001 if (!generate_ifaceid(iface
, &addr
.addr
.in6
))
1004 assignment
->addr
= addr
.addr
.in6
;
1005 route
.addr
= addr
.addr
;
1008 addr
.flags
|= DEVADDR_OFFLINK
;
1009 if (system_add_address(l3_downlink
, &addr
))
1012 if (!assignment
->enabled
) {
1013 if (iface
->ip6table
)
1014 set_ip_source_policy(true, true, IPRULE_PRIORITY_ADDR_MASK
, &addr
.addr
,
1015 addr
.mask
< 64 ? 64 : addr
.mask
, iface
->ip6table
, NULL
, NULL
, false);
1017 if (prefix
->iface
) {
1018 set_ip_source_policy(true, true, IPRULE_PRIORITY_REJECT
, &addr
.addr
,
1019 addr
.mask
, 0, iface
, "unreachable", true);
1021 if (prefix
->iface
->ip6table
)
1022 set_ip_source_policy(true, true, IPRULE_PRIORITY_NW
, &addr
.addr
,
1023 addr
.mask
, prefix
->iface
->ip6table
, iface
, NULL
, true);
1027 clear_if_addr(&route
.addr
, route
.mask
);
1028 interface_set_route_info(iface
, &route
);
1030 system_add_route(l3_downlink
, &route
);
1032 if (uplink
&& uplink
->l3_dev
.dev
&& !(l3_downlink
->settings
.flags
& DEV_OPT_MTU6
)) {
1033 int mtu
= system_update_ipv6_mtu(uplink
->l3_dev
.dev
, 0);
1034 int mtu_old
= system_update_ipv6_mtu(l3_downlink
, 0);
1036 if (mtu
> 0 && mtu_old
!= mtu
) {
1037 if (system_update_ipv6_mtu(l3_downlink
, mtu
) < 0 && mtu
< mtu_old
)
1038 netifd_log_message(L_WARNING
, "Failed to set IPv6 mtu to %d "
1039 "on interface '%s'\n", mtu
, iface
->name
);
1043 assignment
->enabled
= true;
1047 static bool interface_prefix_assign(struct list_head
*list
,
1048 struct device_prefix_assignment
*assign
)
1050 int32_t current
= 0, asize
= (1 << (64 - assign
->length
)) - 1;
1051 struct device_prefix_assignment
*c
;
1052 list_for_each_entry(c
, list
, head
) {
1053 if (assign
->assigned
!= -1) {
1054 if (assign
->assigned
>= current
&& assign
->assigned
+ asize
< c
->assigned
) {
1055 list_add_tail(&assign
->head
, &c
->head
);
1058 } else if (assign
->assigned
== -1) {
1059 current
= (current
+ asize
) & (~asize
);
1060 if (current
+ asize
< c
->assigned
) {
1061 assign
->assigned
= current
;
1062 list_add_tail(&assign
->head
, &c
->head
);
1066 current
= (c
->assigned
+ (1 << (64 - c
->length
)));
1072 * Sorting of assignment entries:
1073 * Primary on assignment length: smallest assignment first
1074 * Secondary on assignment weight: highest weight first
1075 * Finally alphabetical order of interface names
1077 static int prefix_assignment_cmp(const void *k1
, const void *k2
, void *ptr
)
1079 const struct device_prefix_assignment
*a1
= k1
, *a2
= k2
;
1081 if (a1
->length
!= a2
->length
)
1082 return a1
->length
- a2
->length
;
1084 if (a1
->weight
!= a2
->weight
)
1085 return a2
->weight
- a1
->weight
;
1087 return strcmp(a1
->name
, a2
->name
);
1090 static void interface_update_prefix_assignments(struct device_prefix
*prefix
, bool setup
)
1092 struct device_prefix_assignment
*c
;
1093 struct interface
*iface
;
1095 /* Delete all assignments */
1096 while (!list_empty(&prefix
->assignments
)) {
1097 c
= list_first_entry(&prefix
->assignments
,
1098 struct device_prefix_assignment
, head
);
1099 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1100 interface_set_prefix_address(c
, prefix
, iface
, false);
1108 /* End-of-assignment sentinel */
1109 c
= malloc(sizeof(*c
) + 1);
1113 c
->assigned
= 1 << (64 - prefix
->length
);
1116 c
->addr
= in6addr_any
;
1117 list_add(&c
->head
, &prefix
->assignments
);
1119 /* Excluded prefix */
1120 if (prefix
->excl_length
> 0) {
1121 const char name
[] = "!excluded";
1122 c
= malloc(sizeof(*c
) + sizeof(name
));
1124 c
->assigned
= ntohl(prefix
->excl_addr
.s6_addr32
[1]) &
1125 ((1 << (64 - prefix
->length
)) - 1);
1126 c
->length
= prefix
->excl_length
;
1127 c
->addr
= in6addr_any
;
1128 memcpy(c
->name
, name
, sizeof(name
));
1129 list_add(&c
->head
, &prefix
->assignments
);
1133 bool assigned_any
= false;
1135 struct avl_node node
;
1137 struct avl_tree assign_later
;
1139 avl_init(&assign_later
, prefix_assignment_cmp
, false, NULL
);
1141 vlist_for_each_element(&interfaces
, iface
, node
) {
1142 if (iface
->assignment_length
< 48 ||
1143 iface
->assignment_length
> 64)
1146 /* Test whether there is a matching class */
1147 if (!list_empty(&iface
->assignment_classes
)) {
1150 struct interface_assignment_class
*c
;
1151 list_for_each_entry(c
, &iface
->assignment_classes
, head
) {
1152 if (!strcmp(c
->name
, prefix
->pclass
)) {
1162 size_t namelen
= strlen(iface
->name
) + 1;
1163 c
= malloc(sizeof(*c
) + namelen
);
1167 c
->length
= iface
->assignment_length
;
1168 c
->assigned
= iface
->assignment_hint
;
1169 c
->weight
= iface
->assignment_weight
;
1170 c
->addr
= in6addr_any
;
1172 memcpy(c
->name
, iface
->name
, namelen
);
1174 /* First process all custom assignments, put all others in later-list */
1175 if (c
->assigned
== -1 || !interface_prefix_assign(&prefix
->assignments
, c
)) {
1176 if (c
->assigned
!= -1) {
1178 netifd_log_message(L_WARNING
, "Failed to assign requested subprefix "
1179 "of size %hhu for %s, trying other\n", c
->length
, c
->name
);
1182 entry
= calloc(1, sizeof(*entry
));
1188 entry
->node
.key
= c
;
1189 avl_insert(&assign_later
, &entry
->node
);
1192 if (c
->assigned
!= -1)
1193 assigned_any
= true;
1196 /* Then try to assign all other + failed custom assignments */
1197 avl_for_each_element_safe(&assign_later
, entry
, node
, n_entry
) {
1198 bool assigned
= false;
1200 c
= (struct device_prefix_assignment
*)entry
->node
.key
;
1201 avl_delete(&assign_later
, &entry
->node
);
1204 assigned
= interface_prefix_assign(&prefix
->assignments
, c
);
1205 } while (!assigned
&& ++c
->length
<= 64);
1208 netifd_log_message(L_WARNING
, "Failed to assign subprefix "
1209 "of size %hhu for %s\n", c
->length
, c
->name
);
1212 assigned_any
= true;
1217 list_for_each_entry(c
, &prefix
->assignments
, head
)
1218 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1219 interface_set_prefix_address(c
, prefix
, iface
, true);
1222 netifd_log_message(L_WARNING
, "You have delegated IPv6-prefixes but haven't assigned them "
1223 "to any interface. Did you forget to set option ip6assign on your lan-interfaces?");
1227 void interface_refresh_assignments(bool hint
)
1229 static bool refresh
= false;
1230 if (!hint
&& refresh
) {
1231 struct device_prefix
*p
;
1232 list_for_each_entry(p
, &prefixes
, head
)
1233 interface_update_prefix_assignments(p
, true);
1238 void interface_update_prefix_delegation(struct interface_ip_settings
*ip
)
1240 struct device_prefix
*prefix
;
1242 vlist_for_each_element(&ip
->prefix
, prefix
, node
) {
1243 interface_update_prefix_assignments(prefix
, !ip
->no_delegation
);
1245 if (ip
->no_delegation
) {
1246 if (prefix
->head
.next
)
1247 list_del(&prefix
->head
);
1249 list_add(&prefix
->head
, &prefixes
);
1254 interface_update_prefix(struct vlist_tree
*tree
,
1255 struct vlist_node
*node_new
,
1256 struct vlist_node
*node_old
)
1258 struct device_prefix
*prefix_old
, *prefix_new
;
1259 prefix_old
= container_of(node_old
, struct device_prefix
, node
);
1260 prefix_new
= container_of(node_new
, struct device_prefix
, node
);
1262 struct interface_ip_settings
*ip
= container_of(tree
, struct interface_ip_settings
, prefix
);
1263 if (tree
&& (!node_new
|| !node_old
))
1264 ip
->iface
->updated
|= IUF_PREFIX
;
1266 struct device_route route
;
1267 memset(&route
, 0, sizeof(route
));
1268 route
.flags
= DEVADDR_INET6
;
1269 route
.metric
= INT32_MAX
;
1270 route
.mask
= (node_new
) ? prefix_new
->length
: prefix_old
->length
;
1271 route
.addr
.in6
= (node_new
) ? prefix_new
->addr
: prefix_old
->addr
;
1274 struct device_prefix_assignment
*c
;
1275 struct interface
*iface
;
1277 if (node_old
&& node_new
) {
1278 /* Move assignments and refresh addresses to update valid times */
1279 list_splice(&prefix_old
->assignments
, &prefix_new
->assignments
);
1281 list_for_each_entry(c
, &prefix_new
->assignments
, head
)
1282 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1283 interface_set_prefix_address(c
, prefix_new
, iface
, true);
1285 if (prefix_new
->preferred_until
!= prefix_old
->preferred_until
||
1286 prefix_new
->valid_until
!= prefix_old
->valid_until
)
1287 ip
->iface
->updated
|= IUF_PREFIX
;
1288 } else if (node_new
) {
1289 /* Set null-route to avoid routing loops */
1290 system_add_route(NULL
, &route
);
1292 if (!prefix_new
->iface
|| !prefix_new
->iface
->proto_ip
.no_delegation
)
1293 interface_update_prefix_assignments(prefix_new
, true);
1294 } else if (node_old
) {
1295 /* Remove null-route */
1296 interface_update_prefix_assignments(prefix_old
, false);
1297 system_del_route(NULL
, &route
);
1301 if (prefix_old
->head
.next
)
1302 list_del(&prefix_old
->head
);
1306 if (node_new
&& (!prefix_new
->iface
|| !prefix_new
->iface
->proto_ip
.no_delegation
))
1307 list_add(&prefix_new
->head
, &prefixes
);
1311 struct device_prefix
*
1312 interface_ip_add_device_prefix(struct interface
*iface
, struct in6_addr
*addr
,
1313 uint8_t length
, time_t valid_until
, time_t preferred_until
,
1314 struct in6_addr
*excl_addr
, uint8_t excl_length
, const char *pclass
)
1316 union if_addr a
= { .in6
= *addr
};
1319 pclass
= (iface
) ? iface
->name
: "local";
1321 struct device_prefix
*prefix
= calloc(1, sizeof(*prefix
) + strlen(pclass
) + 1);
1325 clear_if_addr(&a
, length
);
1327 prefix
->length
= length
;
1328 prefix
->addr
= a
.in6
;
1329 prefix
->preferred_until
= preferred_until
;
1330 prefix
->valid_until
= valid_until
;
1331 prefix
->iface
= iface
;
1332 INIT_LIST_HEAD(&prefix
->assignments
);
1335 prefix
->excl_addr
= *excl_addr
;
1336 prefix
->excl_length
= excl_length
;
1339 strcpy(prefix
->pclass
, pclass
);
1342 vlist_add(&iface
->proto_ip
.prefix
, &prefix
->node
, &prefix
->addr
);
1344 interface_update_prefix(NULL
, &prefix
->node
, NULL
);
1350 interface_ip_set_ula_prefix(const char *prefix
)
1352 char buf
[INET6_ADDRSTRLEN
+ 4] = {0}, *saveptr
;
1354 strncpy(buf
, prefix
, sizeof(buf
) - 1);
1355 char *prefixaddr
= strtok_r(buf
, "/", &saveptr
);
1357 struct in6_addr addr
;
1358 if (!prefixaddr
|| inet_pton(AF_INET6
, prefixaddr
, &addr
) < 1) {
1360 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
1367 char *prefixlen
= strtok_r(NULL
, ",", &saveptr
);
1368 if (!prefixlen
|| (length
= atoi(prefixlen
)) < 1 || length
> 64)
1371 if (!ula_prefix
|| !IN6_ARE_ADDR_EQUAL(&addr
, &ula_prefix
->addr
) ||
1372 ula_prefix
->length
!= length
) {
1374 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
1376 ula_prefix
= interface_ip_add_device_prefix(NULL
, &addr
, length
,
1377 0, 0, NULL
, 0, NULL
);
1382 interface_add_dns_server(struct interface_ip_settings
*ip
, const char *str
)
1384 struct dns_server
*s
;
1386 s
= calloc(1, sizeof(*s
));
1391 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
1395 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
1402 D(INTERFACE
, "Add IPv%c DNS server: %s\n",
1403 s
->af
== AF_INET6
? '6' : '4', str
);
1404 vlist_simple_add(&ip
->dns_servers
, &s
->node
);
1408 interface_add_dns_server_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
1410 struct blob_attr
*cur
;
1413 blobmsg_for_each_attr(cur
, list
, rem
) {
1414 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
1417 if (!blobmsg_check_attr(cur
, false))
1420 interface_add_dns_server(ip
, blobmsg_data(cur
));
1425 interface_add_dns_search_domain(struct interface_ip_settings
*ip
, const char *str
)
1427 struct dns_search_domain
*s
;
1428 int len
= strlen(str
);
1430 s
= calloc(1, sizeof(*s
) + len
+ 1);
1434 D(INTERFACE
, "Add DNS search domain: %s\n", str
);
1435 memcpy(s
->name
, str
, len
);
1436 vlist_simple_add(&ip
->dns_search
, &s
->node
);
1440 interface_add_dns_search_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
1442 struct blob_attr
*cur
;
1445 blobmsg_for_each_attr(cur
, list
, rem
) {
1446 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
1449 if (!blobmsg_check_attr(cur
, false))
1452 interface_add_dns_search_domain(ip
, blobmsg_data(cur
));
1457 write_resolv_conf_entries(FILE *f
, struct interface_ip_settings
*ip
, const char *dev
)
1459 struct dns_server
*s
;
1460 struct dns_search_domain
*d
;
1462 char buf
[INET6_ADDRSTRLEN
];
1464 vlist_simple_for_each_element(&ip
->dns_servers
, s
, node
) {
1465 str
= inet_ntop(s
->af
, &s
->addr
, buf
, sizeof(buf
));
1469 if (s
->af
== AF_INET6
&& IN6_IS_ADDR_LINKLOCAL(&s
->addr
.in6
))
1470 fprintf(f
, "nameserver %s%%%s\n", str
, dev
);
1472 fprintf(f
, "nameserver %s\n", str
);
1475 vlist_simple_for_each_element(&ip
->dns_search
, d
, node
) {
1476 fprintf(f
, "search %s\n", d
->name
);
1480 /* Sorting of interface resolver entries : */
1481 /* Primary on interface dns_metric : lowest metric first */
1482 /* Secondary on interface metric : lowest metric first */
1483 /* Finally alphabetical order of interface names */
1484 static int resolv_conf_iface_cmp(const void *k1
, const void *k2
, void *ptr
)
1486 const struct interface
*iface1
= k1
, *iface2
= k2
;
1488 if (iface1
->dns_metric
!= iface2
->dns_metric
)
1489 return iface1
->dns_metric
- iface2
->dns_metric
;
1491 if (iface1
->metric
!= iface2
->metric
)
1492 return iface1
->metric
- iface2
->metric
;
1494 return strcmp(iface1
->name
, iface2
->name
);
1498 __interface_write_dns_entries(FILE *f
, const char *jail
)
1500 struct interface
*iface
;
1502 struct avl_node node
;
1504 struct avl_tree resolv_conf_iface_entries
;
1506 avl_init(&resolv_conf_iface_entries
, resolv_conf_iface_cmp
, false, NULL
);
1508 vlist_for_each_element(&interfaces
, iface
, node
) {
1509 if (iface
->state
!= IFS_UP
)
1512 if (jail
&& (!iface
->jail
|| strcmp(jail
, iface
->jail
)))
1515 if (vlist_simple_empty(&iface
->proto_ip
.dns_search
) &&
1516 vlist_simple_empty(&iface
->proto_ip
.dns_servers
) &&
1517 vlist_simple_empty(&iface
->config_ip
.dns_search
) &&
1518 vlist_simple_empty(&iface
->config_ip
.dns_servers
))
1521 entry
= calloc(1, sizeof(*entry
));
1525 entry
->node
.key
= iface
;
1526 avl_insert(&resolv_conf_iface_entries
, &entry
->node
);
1529 avl_for_each_element(&resolv_conf_iface_entries
, entry
, node
) {
1530 iface
= (struct interface
*)entry
->node
.key
;
1531 struct device
*dev
= iface
->l3_dev
.dev
;
1533 fprintf(f
, "# Interface %s\n", iface
->name
);
1535 write_resolv_conf_entries(f
, &iface
->config_ip
, dev
->ifname
);
1537 if (!iface
->proto_ip
.no_dns
)
1538 write_resolv_conf_entries(f
, &iface
->proto_ip
, dev
->ifname
);
1541 avl_remove_all_elements(&resolv_conf_iface_entries
, entry
, node
, n_entry
)
1546 interface_write_resolv_conf(const char *jail
)
1548 size_t plen
= (jail
? strlen(jail
) + 1 : 0 ) + strlen(resolv_conf
) + 1;
1549 char *path
= alloca(plen
);
1550 char *dpath
= alloca(plen
);
1551 char *tmppath
= alloca(plen
+ 4);
1553 uint32_t crcold
, crcnew
;
1556 sprintf(path
, "/tmp/resolv.conf-%s.d/resolv.conf.auto", jail
);
1557 strcpy(dpath
, path
);
1558 dpath
= dirname(dpath
);
1561 strcpy(path
, resolv_conf
);
1564 sprintf(tmppath
, "%s.tmp", path
);
1566 f
= fopen(tmppath
, "w+");
1568 D(INTERFACE
, "Failed to open %s for writing\n", path
);
1572 __interface_write_dns_entries(f
, jail
);
1576 crcnew
= crc32_file(f
);
1579 crcold
= crcnew
+ 1;
1580 f
= fopen(path
, "r");
1582 crcold
= crc32_file(f
);
1586 if (crcold
== crcnew
) {
1588 } else if (rename(tmppath
, path
) < 0) {
1589 D(INTERFACE
, "Failed to replace %s\n", path
);
1594 void interface_ip_set_enabled(struct interface_ip_settings
*ip
, bool enabled
)
1596 struct device_addr
*addr
;
1597 struct device_route
*route
;
1598 struct device_neighbor
*neighbor
;
1600 struct interface
*iface
;
1602 ip
->enabled
= enabled
;
1604 dev
= iface
->l3_dev
.dev
;
1608 vlist_for_each_element(&ip
->addr
, addr
, node
) {
1609 bool v6
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
) ? true : false;
1611 if (addr
->flags
& DEVADDR_EXTERNAL
)
1614 if (addr
->enabled
== enabled
)
1618 system_add_address(dev
, addr
);
1620 addr
->policy_table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
1621 if (iface
->metric
|| addr
->policy_table
)
1622 interface_handle_subnet_route(iface
, addr
, true);
1624 if ((addr
->flags
& DEVADDR_OFFLINK
) && (addr
->mask
< (v6
? 128 : 32))) {
1625 struct device_route route
;
1627 memset(&route
, 0, sizeof(route
));
1628 route
.flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
1629 route
.metric
= INT32_MAX
;
1630 route
.mask
= addr
->mask
;
1631 route
.addr
= addr
->addr
;
1633 clear_if_addr(&route
.addr
, route
.mask
);
1636 * In case off link is specifed as address property
1637 * add null-route to avoid routing loops
1639 system_add_route(NULL
, &route
);
1642 if (addr
->policy_table
)
1643 interface_add_addr_rules(addr
, true);
1645 interface_handle_subnet_route(iface
, addr
, false);
1646 system_del_address(dev
, addr
);
1648 if ((addr
->flags
& DEVADDR_OFFLINK
) && (addr
->mask
< (v6
? 128 : 32))) {
1649 struct device_route route
;
1651 memset(&route
, 0, sizeof(route
));
1652 route
.flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
1653 route
.metric
= INT32_MAX
;
1654 route
.mask
= addr
->mask
;
1655 route
.addr
= addr
->addr
;
1657 clear_if_addr(&route
.addr
, route
.mask
);
1659 /* Delete null-route */
1660 system_del_route(NULL
, &route
);
1663 if (addr
->policy_table
)
1664 interface_add_addr_rules(addr
, false);
1666 addr
->enabled
= enabled
;
1669 vlist_for_each_element(&ip
->route
, route
, node
) {
1670 bool _enabled
= enabled
;
1672 if (route
->flags
& DEVADDR_EXTERNAL
)
1675 if (!enable_route(ip
, route
))
1677 if (route
->enabled
== _enabled
)
1681 interface_set_route_info(ip
->iface
, route
);
1683 if (system_add_route(dev
, route
))
1684 route
->failed
= true;
1686 system_del_route(dev
, route
);
1688 route
->enabled
= _enabled
;
1691 vlist_for_each_element(&ip
->neighbor
, neighbor
, node
) {
1692 if (neighbor
->enabled
== enabled
)
1696 if(system_add_neighbor(dev
, neighbor
))
1697 neighbor
->failed
= true;
1699 system_del_neighbor(dev
, neighbor
);
1701 neighbor
->enabled
= enabled
;
1704 struct device_prefix
*c
;
1705 struct device_prefix_assignment
*a
;
1706 list_for_each_entry(c
, &prefixes
, head
)
1707 list_for_each_entry(a
, &c
->assignments
, head
)
1708 if (!strcmp(a
->name
, ip
->iface
->name
))
1709 interface_set_prefix_address(a
, c
, ip
->iface
, enabled
);
1711 if (ip
->iface
->policy_rules_set
!= enabled
&&
1712 ip
->iface
->l3_dev
.dev
) {
1713 set_ip_lo_policy(enabled
, true, ip
->iface
);
1714 set_ip_lo_policy(enabled
, false, ip
->iface
);
1716 set_ip_source_policy(enabled
, true, IPRULE_PRIORITY_REJECT
+ ip
->iface
->l3_dev
.dev
->ifindex
,
1717 NULL
, 0, 0, ip
->iface
, "failed_policy", true);
1718 ip
->iface
->policy_rules_set
= enabled
;
1723 interface_ip_update_start(struct interface_ip_settings
*ip
)
1725 if (ip
!= &ip
->iface
->config_ip
) {
1726 vlist_simple_update(&ip
->dns_servers
);
1727 vlist_simple_update(&ip
->dns_search
);
1729 vlist_update(&ip
->route
);
1730 vlist_update(&ip
->addr
);
1731 vlist_update(&ip
->prefix
);
1732 vlist_update(&ip
->neighbor
);
1736 interface_ip_update_complete(struct interface_ip_settings
*ip
)
1738 vlist_simple_flush(&ip
->dns_servers
);
1739 vlist_simple_flush(&ip
->dns_search
);
1740 vlist_flush(&ip
->route
);
1741 vlist_flush(&ip
->addr
);
1742 vlist_flush(&ip
->prefix
);
1743 vlist_flush(&ip
->neighbor
);
1744 interface_write_resolv_conf(ip
->iface
->jail
);
1748 interface_ip_flush(struct interface_ip_settings
*ip
)
1750 if (ip
== &ip
->iface
->proto_ip
)
1751 vlist_flush_all(&ip
->iface
->host_routes
);
1752 vlist_simple_flush_all(&ip
->dns_servers
);
1753 vlist_simple_flush_all(&ip
->dns_search
);
1754 vlist_flush_all(&ip
->route
);
1755 vlist_flush_all(&ip
->addr
);
1756 vlist_flush_all(&ip
->neighbor
);
1757 vlist_flush_all(&ip
->prefix
);
1761 __interface_ip_init(struct interface_ip_settings
*ip
, struct interface
*iface
)
1765 vlist_simple_init(&ip
->dns_search
, struct dns_search_domain
, node
);
1766 vlist_simple_init(&ip
->dns_servers
, struct dns_server
, node
);
1767 vlist_init(&ip
->route
, route_cmp
, interface_update_proto_route
);
1768 vlist_init(&ip
->neighbor
, neighbor_cmp
, interface_update_proto_neighbor
);
1769 vlist_init(&ip
->addr
, addr_cmp
, interface_update_proto_addr
);
1770 vlist_init(&ip
->prefix
, prefix_cmp
, interface_update_prefix
);
1774 interface_ip_init(struct interface
*iface
)
1776 __interface_ip_init(&iface
->proto_ip
, iface
);
1777 __interface_ip_init(&iface
->config_ip
, iface
);
1778 vlist_init(&iface
->host_routes
, route_cmp
, interface_update_host_route
);
1782 interface_ip_valid_until_handler(struct uloop_timeout
*t
)
1784 time_t now
= system_get_rtime();
1785 struct interface
*iface
;
1786 vlist_for_each_element(&interfaces
, iface
, node
) {
1787 if (iface
->state
!= IFS_UP
)
1790 struct device_addr
*addr
, *addrp
;
1791 struct device_route
*route
, *routep
;
1792 struct device_prefix
*pref
, *prefp
;
1794 vlist_for_each_element_safe(&iface
->proto_ip
.addr
, addr
, node
, addrp
)
1795 if (addr
->valid_until
&& addr
->valid_until
< now
)
1796 vlist_delete(&iface
->proto_ip
.addr
, &addr
->node
);
1798 vlist_for_each_element_safe(&iface
->proto_ip
.route
, route
, node
, routep
)
1799 if (route
->valid_until
&& route
->valid_until
< now
)
1800 vlist_delete(&iface
->proto_ip
.route
, &route
->node
);
1802 vlist_for_each_element_safe(&iface
->proto_ip
.prefix
, pref
, node
, prefp
)
1803 if (pref
->valid_until
&& pref
->valid_until
< now
)
1804 vlist_delete(&iface
->proto_ip
.prefix
, &pref
->node
);
1808 uloop_timeout_set(t
, 1000);
1812 interface_ip_init_worker(void)
1814 valid_until_timeout
.cb
= interface_ip_valid_until_handler
;
1815 uloop_timeout_set(&valid_until_timeout
, 1000);