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
)
243 interface_ip_find_addr_target(struct interface
*iface
, union if_addr
*a
, bool v6
)
245 return __find_ip_addr_target(&iface
->proto_ip
, a
, v6
) ||
246 __find_ip_addr_target(&iface
->config_ip
, a
, v6
);
250 interface_ip_find_route_target(struct interface
*iface
, union if_addr
*a
,
251 bool v6
, struct device_route
**route
)
253 __find_ip_route_target(&iface
->proto_ip
, a
, v6
, route
);
254 __find_ip_route_target(&iface
->config_ip
, a
, v6
, route
);
258 interface_ip_add_target_route(union if_addr
*addr
, bool v6
, struct interface
*iface
)
260 struct device_route
*route
, *r_next
= NULL
;
261 bool defaultroute_target
= false;
262 union if_addr addr_zero
;
263 int addrsize
= v6
? sizeof(addr
->in6
) : sizeof(addr
->in
);
265 memset(&addr_zero
, 0, sizeof(addr_zero
));
266 if (memcmp(&addr_zero
, addr
, addrsize
) == 0)
267 defaultroute_target
= true;
270 /* look for locally addressable target first */
271 if (interface_ip_find_addr_target(iface
, addr
, v6
))
274 /* do not stop at the first route, let the lookup compare
275 * masks to find the best match */
276 interface_ip_find_route_target(iface
, addr
, v6
, &r_next
);
278 vlist_for_each_element(&interfaces
, iface
, node
) {
279 /* look for locally addressable target first */
280 if (interface_ip_find_addr_target(iface
, addr
, v6
))
283 /* do not stop at the first route, let the lookup compare
284 * masks to find the best match */
285 interface_ip_find_route_target(iface
, addr
, v6
, &r_next
);
292 iface
= r_next
->iface
;
293 if (defaultroute_target
)
296 route
= calloc(1, sizeof(*route
));
300 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
301 route
->mask
= v6
? 128 : 32;
302 memcpy(&route
->addr
, addr
, addrsize
);
303 memcpy(&route
->nexthop
, &r_next
->nexthop
, sizeof(route
->nexthop
));
304 route
->mtu
= r_next
->mtu
;
305 route
->metric
= r_next
->metric
;
306 route
->table
= r_next
->table
;
307 route
->iface
= iface
;
308 vlist_add(&iface
->host_routes
, &route
->node
, route
);
314 interface_set_route_info(struct interface
*iface
, struct device_route
*route
)
316 bool v6
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
);
321 if (!(route
->flags
& DEVROUTE_METRIC
))
322 route
->metric
= iface
->metric
;
324 if (!(route
->flags
& DEVROUTE_TABLE
)) {
325 route
->table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
327 route
->flags
|= DEVROUTE_SRCTABLE
;
332 interface_ip_add_neighbor(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
334 struct interface_ip_settings
*ip
;
335 struct blob_attr
*tb
[__NEIGHBOR_MAX
], *cur
;
336 struct device_neighbor
*neighbor
;
337 int af
= v6
? AF_INET6
: AF_INET
;
338 struct ether_addr
*ea
;
340 blobmsg_parse(neighbor_attr
, __NEIGHBOR_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
343 if ((cur
= tb
[NEIGHBOR_INTERFACE
]) == NULL
)
346 iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
351 ip
= &iface
->config_ip
;
353 ip
= &iface
->proto_ip
;
355 neighbor
= calloc(1,sizeof(*neighbor
));
359 neighbor
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
361 if ((cur
= tb
[NEIGHBOR_ADDRESS
]) != NULL
){
362 if (!inet_pton(af
, blobmsg_data(cur
), &neighbor
->addr
))
367 if ((cur
= tb
[NEIGHBOR_MAC
]) != NULL
) {
368 neighbor
->flags
|= DEVNEIGH_MAC
;
369 ea
= ether_aton(blobmsg_data(cur
));
373 memcpy(neighbor
->macaddr
, ea
, 6);
376 if ((cur
= tb
[NEIGHBOR_PROXY
]) != NULL
)
377 neighbor
->proxy
= blobmsg_get_bool(cur
);
379 if ((cur
= tb
[NEIGHBOR_ROUTER
]) != NULL
)
380 neighbor
->router
= blobmsg_get_bool(cur
);
382 vlist_add(&ip
->neighbor
, &neighbor
->node
, neighbor
);
390 interface_ip_add_route(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
392 struct interface_ip_settings
*ip
;
393 struct blob_attr
*tb
[__ROUTE_MAX
], *cur
;
394 struct device_route
*route
;
395 int af
= v6
? AF_INET6
: AF_INET
;
397 blobmsg_parse(route_attr
, __ROUTE_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
399 if ((cur
= tb
[ROUTE_DISABLED
]) != NULL
&& blobmsg_get_bool(cur
))
403 if ((cur
= tb
[ROUTE_INTERFACE
]) == NULL
)
406 iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
410 ip
= &iface
->config_ip
;
412 ip
= &iface
->proto_ip
;
415 route
= calloc(1, sizeof(*route
));
419 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
420 route
->mask
= v6
? 128 : 32;
421 if ((cur
= tb
[ROUTE_MASK
]) != NULL
) {
422 route
->mask
= parse_netmask_string(blobmsg_data(cur
), v6
);
423 if (route
->mask
> (v6
? 128 : 32))
427 if ((cur
= tb
[ROUTE_TARGET
]) != NULL
) {
428 if (!parse_ip_and_netmask(af
, blobmsg_data(cur
), &route
->addr
, &route
->mask
)) {
429 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur
));
434 if ((cur
= tb
[ROUTE_GATEWAY
]) != NULL
) {
435 if (!inet_pton(af
, blobmsg_data(cur
), &route
->nexthop
)) {
436 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur
));
441 if ((cur
= tb
[ROUTE_METRIC
]) != NULL
) {
442 route
->metric
= blobmsg_get_u32(cur
);
443 route
->flags
|= DEVROUTE_METRIC
;
446 if ((cur
= tb
[ROUTE_MTU
]) != NULL
) {
447 route
->mtu
= blobmsg_get_u32(cur
);
448 route
->flags
|= DEVROUTE_MTU
;
451 /* Use source-based routing */
452 if ((cur
= tb
[ROUTE_SOURCE
]) != NULL
) {
453 char *saveptr
, *source
= alloca(blobmsg_data_len(cur
));
454 memcpy(source
, blobmsg_data(cur
), blobmsg_data_len(cur
));
456 const char *addr
= strtok_r(source
, "/", &saveptr
);
457 const char *mask
= strtok_r(NULL
, "/", &saveptr
);
459 if (!addr
|| inet_pton(af
, addr
, &route
->source
) < 1) {
460 DPRINTF("Failed to parse route source: %s\n", addr
? addr
: "NULL");
464 route
->sourcemask
= (mask
) ? atoi(mask
) : ((af
== AF_INET6
) ? 128 : 32);
467 if ((cur
= tb
[ROUTE_ONLINK
]) != NULL
&& blobmsg_get_bool(cur
))
468 route
->flags
|= DEVROUTE_ONLINK
;
470 if ((cur
= tb
[ROUTE_TABLE
]) != NULL
) {
471 if (!system_resolve_rt_table(blobmsg_data(cur
), &route
->table
)) {
472 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
476 /* only set the table flag if not using the main (default) table */
477 if (system_is_default_rt_table(route
->table
))
481 route
->flags
|= DEVROUTE_TABLE
;
484 if ((cur
= tb
[ROUTE_VALID
]) != NULL
) {
485 int64_t valid
= blobmsg_get_u32(cur
);
486 int64_t valid_until
= valid
+ (int64_t)system_get_rtime();
487 if (valid_until
<= LONG_MAX
&& valid
!= 0xffffffffLL
) /* Catch overflow */
488 route
->valid_until
= valid_until
;
491 if ((cur
= tb
[ROUTE_TYPE
]) != NULL
) {
492 if (!system_resolve_rt_type(blobmsg_data(cur
), &route
->type
)) {
493 DPRINTF("Failed to resolve routing type: %s\n", (char *) blobmsg_data(cur
));
496 route
->flags
|= DEVROUTE_TYPE
;
499 if ((cur
= tb
[ROUTE_PROTO
]) != NULL
) {
500 if (!system_resolve_rt_proto(blobmsg_data(cur
), &route
->proto
)) {
501 DPRINTF("Failed to resolve proto type: %s\n", (char *) blobmsg_data(cur
));
504 route
->flags
|= DEVROUTE_PROTO
;
507 interface_set_route_info(iface
, route
);
508 vlist_add(&ip
->route
, &route
->node
, route
);
516 addr_cmp(const void *k1
, const void *k2
, void *ptr
)
518 const struct device_addr
*a1
= k1
;
519 const struct device_addr
*a2
= k2
;
520 const int cmp_offset
= offsetof(struct device_addr
, flags
);
521 const int cmp_size
= sizeof(struct device_addr
) - cmp_offset
;
523 if (a1
->index
!= a2
->index
)
524 return a1
->index
- a2
->index
;
525 return memcmp(k1
+cmp_offset
, k2
+cmp_offset
, cmp_size
);
529 neighbor_cmp(const void *k1
, const void *k2
, void *ptr
)
531 const struct device_neighbor
*n1
= k1
, *n2
= k2
;
533 return memcmp(&n1
->addr
, &n2
->addr
, sizeof(n2
->addr
));
537 route_cmp(const void *k1
, const void *k2
, void *ptr
)
539 const struct device_route
*r1
= k1
, *r2
= k2
;
541 if (r1
->mask
!= r2
->mask
)
542 return r2
->mask
- r1
->mask
;
544 if (r1
->metric
!= r2
->metric
)
545 return r1
->metric
- r2
->metric
;
547 if (r1
->flags
!= r2
->flags
)
548 return r2
->flags
- r1
->flags
;
550 if (r1
->sourcemask
!= r2
->sourcemask
)
551 return r1
->sourcemask
- r2
->sourcemask
;
553 if (r1
->table
!= r2
->table
)
554 return r1
->table
- r2
->table
;
556 int maskcmp
= memcmp(&r1
->source
, &r2
->source
, sizeof(r1
->source
));
560 return memcmp(&r1
->addr
, &r2
->addr
, sizeof(r1
->addr
));
564 prefix_cmp(const void *k1
, const void *k2
, void *ptr
)
566 return memcmp(k1
, k2
, offsetof(struct device_prefix
, pclass
) -
567 offsetof(struct device_prefix
, addr
));
571 interface_handle_subnet_route(struct interface
*iface
, struct device_addr
*addr
, bool add
)
573 struct device
*dev
= iface
->l3_dev
.dev
;
574 struct device_route
*r
= &addr
->subnet
;
576 if (addr
->flags
& DEVADDR_OFFLINK
)
580 if (!addr
->subnet
.iface
)
583 system_del_route(dev
, r
);
584 memset(r
, 0, sizeof(*r
));
589 r
->flags
= addr
->flags
;
590 r
->mask
= addr
->mask
;
591 memcpy(&r
->addr
, &addr
->addr
, sizeof(r
->addr
));
592 clear_if_addr(&r
->addr
, r
->mask
);
594 if (!system_resolve_rt_proto("kernel", &r
->proto
))
597 r
->flags
|= DEVROUTE_PROTO
;
598 system_del_route(dev
, r
);
600 r
->flags
&= ~DEVROUTE_PROTO
;
601 interface_set_route_info(iface
, r
);
603 system_add_route(dev
, r
);
607 interface_add_addr_rules(struct device_addr
*addr
, bool enabled
)
609 bool v6
= (addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
;
611 set_ip_source_policy(enabled
, v6
, IPRULE_PRIORITY_ADDR
, &addr
->addr
,
612 (v6
) ? 128 : 32, addr
->policy_table
, NULL
, NULL
,
614 set_ip_source_policy(enabled
, v6
, IPRULE_PRIORITY_ADDR_MASK
,
615 &addr
->addr
, addr
->mask
, addr
->policy_table
, NULL
,
620 interface_update_proto_addr(struct vlist_tree
*tree
,
621 struct vlist_node
*node_new
,
622 struct vlist_node
*node_old
)
624 struct interface_ip_settings
*ip
;
625 struct interface
*iface
;
627 struct device_addr
*a_new
= NULL
, *a_old
= NULL
;
628 bool replace
= false;
632 ip
= container_of(tree
, struct interface_ip_settings
, addr
);
634 dev
= iface
->l3_dev
.dev
;
636 if (!node_new
|| !node_old
)
637 iface
->updated
|= IUF_ADDRESS
;
640 a_new
= container_of(node_new
, struct device_addr
, node
);
642 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
&&
645 /* /31 and /32 addressing need 255.255.255.255
646 * as broadcast address. */
647 if (a_new
->mask
>= 31) {
648 a_new
->broadcast
= (uint32_t) ~0;
651 uint32_t *a
= (uint32_t *) &a_new
->addr
;
653 mask
>>= a_new
->mask
;
654 a_new
->broadcast
= *a
| htonl(mask
);
660 a_old
= container_of(node_old
, struct device_addr
, node
);
662 if (a_new
&& a_old
) {
665 if (a_old
->flags
!= a_new
->flags
|| a_old
->failed
)
668 if (a_old
->valid_until
!= a_new
->valid_until
||
669 a_old
->preferred_until
!= a_new
->preferred_until
)
672 if (((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) &&
673 (a_new
->broadcast
!= a_old
->broadcast
||
674 a_new
->point_to_point
!= a_old
->point_to_point
))
679 if (a_old
->enabled
&& !keep
) {
681 * This is needed for source routing to work correctly. If a device
682 * has two connections to a network using the same subnet, adding
683 * only the network-rule will cause packets to be routed through the
684 * first matching network (source IP matches both masks)
686 if (a_old
->policy_table
)
687 interface_add_addr_rules(a_old
, false);
689 if (!(a_old
->flags
& DEVADDR_EXTERNAL
)) {
690 interface_handle_subnet_route(iface
, a_old
, false);
691 system_del_address(dev
, a_old
);
693 if ((a_old
->flags
& DEVADDR_OFFLINK
) && (a_old
->mask
< (v6
? 128 : 32))) {
694 struct device_route route
;
696 memset(&route
, 0, sizeof(route
));
697 route
.flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
698 route
.metric
= INT32_MAX
;
699 route
.mask
= a_old
->mask
;
700 route
.addr
= a_old
->addr
;
702 clear_if_addr(&route
.addr
, route
.mask
);
704 /* Delete null-route */
705 system_del_route(NULL
, &route
);
715 a_new
->enabled
= true;
717 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
)
720 a_new
->policy_table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
722 if (!keep
|| replace
) {
723 if (!(a_new
->flags
& DEVADDR_EXTERNAL
)) {
724 if (system_add_address(dev
, a_new
))
725 a_new
->failed
= true;
727 if (iface
->metric
|| a_new
->policy_table
)
728 interface_handle_subnet_route(iface
, a_new
, true);
732 if (!(a_new
->flags
& DEVADDR_EXTERNAL
) &&
733 (a_new
->flags
& DEVADDR_OFFLINK
) &&
734 (a_new
->mask
< (v6
? 128 : 32))) {
735 struct device_route route
;
737 memset(&route
, 0, sizeof(route
));
738 route
.flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
739 route
.metric
= INT32_MAX
;
740 route
.mask
= a_new
->mask
;
741 route
.addr
= a_new
->addr
;
743 clear_if_addr(&route
.addr
, route
.mask
);
746 * In case off link is specifed as address property
747 * add null-route to avoid routing loops
749 system_add_route(NULL
, &route
);
752 if (a_new
->policy_table
)
753 interface_add_addr_rules(a_new
, true);
760 enable_route(struct interface_ip_settings
*ip
, struct device_route
*route
)
762 if (ip
->no_defaultroute
&& !route
->mask
)
769 interface_update_proto_neighbor(struct vlist_tree
*tree
,
770 struct vlist_node
* node_new
,
771 struct vlist_node
*node_old
)
774 struct device_neighbor
*neighbor_old
, *neighbor_new
;
775 struct interface_ip_settings
*ip
;
778 ip
= container_of(tree
, struct interface_ip_settings
, neighbor
);
779 dev
= ip
->iface
->l3_dev
.dev
;
781 neighbor_old
= container_of(node_old
, struct device_neighbor
, node
);
782 neighbor_new
= container_of(node_new
, struct device_neighbor
, node
);
784 if (node_old
&& node_new
) {
785 keep
= (!memcmp(neighbor_old
->macaddr
, neighbor_new
->macaddr
, sizeof(neighbor_old
->macaddr
)) &&
786 (neighbor_old
->proxy
== neighbor_new
->proxy
) &&
787 (neighbor_old
->router
== neighbor_new
->router
));
791 if (!keep
&& neighbor_old
->enabled
)
792 system_del_neighbor(dev
, neighbor_old
);
798 if (!keep
&& ip
->enabled
)
799 if (system_add_neighbor(dev
, neighbor_new
))
800 neighbor_new
->failed
= true;
802 neighbor_new
->enabled
= ip
->enabled
;
807 interface_update_proto_route(struct vlist_tree
*tree
,
808 struct vlist_node
*node_new
,
809 struct vlist_node
*node_old
)
811 struct interface_ip_settings
*ip
;
812 struct interface
*iface
;
814 struct device_route
*route_old
, *route_new
;
817 ip
= container_of(tree
, struct interface_ip_settings
, route
);
819 dev
= iface
->l3_dev
.dev
;
821 if (!node_new
|| !node_old
)
822 iface
->updated
|= IUF_ROUTE
;
824 route_old
= container_of(node_old
, struct device_route
, node
);
825 route_new
= container_of(node_new
, struct device_route
, node
);
827 if (node_old
&& node_new
)
828 keep
= !memcmp(&route_old
->nexthop
, &route_new
->nexthop
, sizeof(route_old
->nexthop
)) &&
829 (route_old
->mtu
== route_new
->mtu
) && (route_old
->type
== route_new
->type
) &&
830 (route_old
->proto
== route_new
->proto
) && !route_old
->failed
;
833 if (!(route_old
->flags
& DEVADDR_EXTERNAL
) && route_old
->enabled
&& !keep
)
834 system_del_route(dev
, route_old
);
840 bool _enabled
= enable_route(ip
, route_new
);
842 if (!(route_new
->flags
& DEVADDR_EXTERNAL
) && !keep
&& _enabled
)
843 if (system_add_route(dev
, route_new
))
844 route_new
->failed
= true;
846 route_new
->iface
= iface
;
847 route_new
->enabled
= _enabled
;
852 interface_update_host_route(struct vlist_tree
*tree
,
853 struct vlist_node
*node_new
,
854 struct vlist_node
*node_old
)
856 struct interface
*iface
;
858 struct device_route
*route_old
, *route_new
;
860 iface
= container_of(tree
, struct interface
, host_routes
);
861 dev
= iface
->l3_dev
.dev
;
863 route_old
= container_of(node_old
, struct device_route
, node
);
864 route_new
= container_of(node_new
, struct device_route
, node
);
867 system_del_route(dev
, route_old
);
872 if (system_add_route(dev
, route_new
))
873 route_new
->failed
= true;
878 random_ifaceid(struct in6_addr
*addr
)
880 static bool initialized
= false;
885 gettimeofday(&t
, NULL
);
886 seed
= t
.tv_sec
^ t
.tv_usec
^ getpid();
890 addr
->s6_addr32
[2] = (uint32_t)mrand48();
891 addr
->s6_addr32
[3] = (uint32_t)mrand48();
895 eui64_ifaceid(struct interface
*iface
, struct in6_addr
*addr
)
897 struct device_settings st
;
899 device_merge_settings(iface
->l3_dev
.dev
, &st
);
901 if (!(st
.flags
& DEV_OPT_MACADDR
))
904 /* get mac address */
905 uint8_t *ifaceid
= addr
->s6_addr
+ 8;
906 memcpy(ifaceid
, st
.macaddr
, 3);
907 memcpy(ifaceid
+ 5, st
.macaddr
+ 3, 3);
916 generate_ifaceid(struct interface
*iface
, struct in6_addr
*addr
)
920 /* generate new iface id */
921 switch (iface
->assignment_iface_id_selection
) {
924 /* copy host part from assignment_fixed_iface_id */
925 memcpy(addr
->s6_addr
+ 8, iface
->assignment_fixed_iface_id
.s6_addr
+ 8, 8);
928 /* randomize last 64 bits */
929 random_ifaceid(addr
);
933 ret
= eui64_ifaceid(iface
, addr
);
943 interface_set_prefix_address(struct device_prefix_assignment
*assignment
,
944 const struct device_prefix
*prefix
, struct interface
*iface
, bool add
)
946 const struct interface
*uplink
= prefix
->iface
;
947 if (!iface
->l3_dev
.dev
)
950 struct device
*l3_downlink
= iface
->l3_dev
.dev
;
952 struct device_addr addr
;
953 struct device_route route
;
954 memset(&addr
, 0, sizeof(addr
));
955 memset(&route
, 0, sizeof(route
));
957 addr
.addr
.in6
= assignment
->addr
;
958 addr
.mask
= assignment
->length
;
959 addr
.flags
= DEVADDR_INET6
;
960 addr
.preferred_until
= prefix
->preferred_until
;
961 addr
.valid_until
= prefix
->valid_until
;
963 route
.flags
= DEVADDR_INET6
;
964 route
.mask
= addr
.mask
< 64 ? 64 : addr
.mask
;
965 route
.addr
= addr
.addr
;
967 if (!add
&& assignment
->enabled
) {
968 time_t now
= system_get_rtime();
970 addr
.preferred_until
= now
;
971 if (!addr
.valid_until
|| addr
.valid_until
- now
> 7200)
972 addr
.valid_until
= now
+ 7200;
975 set_ip_source_policy(false, true, IPRULE_PRIORITY_ADDR_MASK
, &addr
.addr
,
976 addr
.mask
< 64 ? 64 : addr
.mask
, iface
->ip6table
, NULL
, NULL
, false);
979 if (prefix
->iface
->ip6table
)
980 set_ip_source_policy(false, true, IPRULE_PRIORITY_NW
, &addr
.addr
,
981 addr
.mask
, prefix
->iface
->ip6table
, iface
, NULL
, true);
983 set_ip_source_policy(false, true, IPRULE_PRIORITY_REJECT
, &addr
.addr
,
984 addr
.mask
, 0, iface
, "unreachable", true);
987 clear_if_addr(&route
.addr
, route
.mask
);
988 interface_set_route_info(iface
, &route
);
990 system_del_route(l3_downlink
, &route
);
991 system_add_address(l3_downlink
, &addr
);
993 assignment
->addr
= in6addr_any
;
994 assignment
->enabled
= false;
995 } else if (add
&& (iface
->state
== IFS_UP
|| iface
->state
== IFS_SETUP
)) {
996 if (IN6_IS_ADDR_UNSPECIFIED(&addr
.addr
.in6
)) {
997 addr
.addr
.in6
= prefix
->addr
;
998 addr
.addr
.in6
.s6_addr32
[1] |= htonl(assignment
->assigned
);
999 if (!generate_ifaceid(iface
, &addr
.addr
.in6
))
1002 assignment
->addr
= addr
.addr
.in6
;
1003 route
.addr
= addr
.addr
;
1006 addr
.flags
|= DEVADDR_OFFLINK
;
1007 if (system_add_address(l3_downlink
, &addr
))
1010 if (!assignment
->enabled
) {
1011 if (iface
->ip6table
)
1012 set_ip_source_policy(true, true, IPRULE_PRIORITY_ADDR_MASK
, &addr
.addr
,
1013 addr
.mask
< 64 ? 64 : addr
.mask
, iface
->ip6table
, NULL
, NULL
, false);
1015 if (prefix
->iface
) {
1016 set_ip_source_policy(true, true, IPRULE_PRIORITY_REJECT
, &addr
.addr
,
1017 addr
.mask
, 0, iface
, "unreachable", true);
1019 if (prefix
->iface
->ip6table
)
1020 set_ip_source_policy(true, true, IPRULE_PRIORITY_NW
, &addr
.addr
,
1021 addr
.mask
, prefix
->iface
->ip6table
, iface
, NULL
, true);
1025 clear_if_addr(&route
.addr
, route
.mask
);
1026 interface_set_route_info(iface
, &route
);
1028 system_add_route(l3_downlink
, &route
);
1030 if (uplink
&& uplink
->l3_dev
.dev
&& !(l3_downlink
->settings
.flags
& DEV_OPT_MTU6
)) {
1031 int mtu
= system_update_ipv6_mtu(uplink
->l3_dev
.dev
, 0);
1032 int mtu_old
= system_update_ipv6_mtu(l3_downlink
, 0);
1034 if (mtu
> 0 && mtu_old
!= mtu
) {
1035 if (system_update_ipv6_mtu(l3_downlink
, mtu
) < 0 && mtu
< mtu_old
)
1036 netifd_log_message(L_WARNING
, "Failed to set IPv6 mtu to %d "
1037 "on interface '%s'\n", mtu
, iface
->name
);
1041 assignment
->enabled
= true;
1045 static bool interface_prefix_assign(struct list_head
*list
,
1046 struct device_prefix_assignment
*assign
)
1048 int32_t current
= 0, asize
= (1 << (64 - assign
->length
)) - 1;
1049 struct device_prefix_assignment
*c
;
1050 list_for_each_entry(c
, list
, head
) {
1051 if (assign
->assigned
!= -1) {
1052 if (assign
->assigned
>= current
&& assign
->assigned
+ asize
< c
->assigned
) {
1053 list_add_tail(&assign
->head
, &c
->head
);
1056 } else if (assign
->assigned
== -1) {
1057 current
= (current
+ asize
) & (~asize
);
1058 if (current
+ asize
< c
->assigned
) {
1059 assign
->assigned
= current
;
1060 list_add_tail(&assign
->head
, &c
->head
);
1064 current
= (c
->assigned
+ (1 << (64 - c
->length
)));
1070 * Sorting of assignment entries:
1071 * Primary on assignment length: smallest assignment first
1072 * Secondary on assignment weight: highest weight first
1073 * Finally alphabetical order of interface names
1075 static int prefix_assignment_cmp(const void *k1
, const void *k2
, void *ptr
)
1077 const struct device_prefix_assignment
*a1
= k1
, *a2
= k2
;
1079 if (a1
->length
!= a2
->length
)
1080 return a1
->length
- a2
->length
;
1082 if (a1
->weight
!= a2
->weight
)
1083 return a2
->weight
- a1
->weight
;
1085 return strcmp(a1
->name
, a2
->name
);
1088 static void interface_update_prefix_assignments(struct device_prefix
*prefix
, bool setup
)
1090 struct device_prefix_assignment
*c
;
1091 struct interface
*iface
;
1093 /* Delete all assignments */
1094 while (!list_empty(&prefix
->assignments
)) {
1095 c
= list_first_entry(&prefix
->assignments
,
1096 struct device_prefix_assignment
, head
);
1097 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1098 interface_set_prefix_address(c
, prefix
, iface
, false);
1106 /* End-of-assignment sentinel */
1107 c
= malloc(sizeof(*c
) + 1);
1111 c
->assigned
= 1 << (64 - prefix
->length
);
1114 c
->addr
= in6addr_any
;
1115 list_add(&c
->head
, &prefix
->assignments
);
1117 /* Excluded prefix */
1118 if (prefix
->excl_length
> 0) {
1119 const char name
[] = "!excluded";
1120 c
= malloc(sizeof(*c
) + sizeof(name
));
1122 c
->assigned
= ntohl(prefix
->excl_addr
.s6_addr32
[1]) &
1123 ((1 << (64 - prefix
->length
)) - 1);
1124 c
->length
= prefix
->excl_length
;
1125 c
->addr
= in6addr_any
;
1126 memcpy(c
->name
, name
, sizeof(name
));
1127 list_add(&c
->head
, &prefix
->assignments
);
1131 bool assigned_any
= false;
1133 struct avl_node node
;
1135 struct avl_tree assign_later
;
1137 avl_init(&assign_later
, prefix_assignment_cmp
, false, NULL
);
1139 vlist_for_each_element(&interfaces
, iface
, node
) {
1140 if (iface
->assignment_length
< 48 ||
1141 iface
->assignment_length
> 64)
1144 /* Test whether there is a matching class */
1145 if (!list_empty(&iface
->assignment_classes
)) {
1148 struct interface_assignment_class
*c
;
1149 list_for_each_entry(c
, &iface
->assignment_classes
, head
) {
1150 if (!strcmp(c
->name
, prefix
->pclass
)) {
1160 size_t namelen
= strlen(iface
->name
) + 1;
1161 c
= malloc(sizeof(*c
) + namelen
);
1165 c
->length
= iface
->assignment_length
;
1166 c
->assigned
= iface
->assignment_hint
;
1167 c
->weight
= iface
->assignment_weight
;
1168 c
->addr
= in6addr_any
;
1170 memcpy(c
->name
, iface
->name
, namelen
);
1172 /* First process all custom assignments, put all others in later-list */
1173 if (c
->assigned
== -1 || !interface_prefix_assign(&prefix
->assignments
, c
)) {
1174 if (c
->assigned
!= -1) {
1176 netifd_log_message(L_WARNING
, "Failed to assign requested subprefix "
1177 "of size %hhu for %s, trying other\n", c
->length
, c
->name
);
1180 entry
= calloc(1, sizeof(*entry
));
1186 entry
->node
.key
= c
;
1187 avl_insert(&assign_later
, &entry
->node
);
1190 if (c
->assigned
!= -1)
1191 assigned_any
= true;
1194 /* Then try to assign all other + failed custom assignments */
1195 avl_for_each_element_safe(&assign_later
, entry
, node
, n_entry
) {
1196 bool assigned
= false;
1198 c
= (struct device_prefix_assignment
*)entry
->node
.key
;
1199 avl_delete(&assign_later
, &entry
->node
);
1202 assigned
= interface_prefix_assign(&prefix
->assignments
, c
);
1203 } while (!assigned
&& ++c
->length
<= 64);
1206 netifd_log_message(L_WARNING
, "Failed to assign subprefix "
1207 "of size %hhu for %s\n", c
->length
, c
->name
);
1210 assigned_any
= true;
1215 list_for_each_entry(c
, &prefix
->assignments
, head
)
1216 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1217 interface_set_prefix_address(c
, prefix
, iface
, true);
1220 netifd_log_message(L_WARNING
, "You have delegated IPv6-prefixes but haven't assigned them "
1221 "to any interface. Did you forget to set option ip6assign on your lan-interfaces?");
1225 void interface_refresh_assignments(bool hint
)
1227 static bool refresh
= false;
1228 if (!hint
&& refresh
) {
1229 struct device_prefix
*p
;
1230 list_for_each_entry(p
, &prefixes
, head
)
1231 interface_update_prefix_assignments(p
, true);
1236 void interface_update_prefix_delegation(struct interface_ip_settings
*ip
)
1238 struct device_prefix
*prefix
;
1240 vlist_for_each_element(&ip
->prefix
, prefix
, node
) {
1241 interface_update_prefix_assignments(prefix
, !ip
->no_delegation
);
1243 if (ip
->no_delegation
) {
1244 if (prefix
->head
.next
)
1245 list_del(&prefix
->head
);
1247 list_add(&prefix
->head
, &prefixes
);
1252 interface_update_prefix(struct vlist_tree
*tree
,
1253 struct vlist_node
*node_new
,
1254 struct vlist_node
*node_old
)
1256 struct device_prefix
*prefix_old
, *prefix_new
;
1257 prefix_old
= container_of(node_old
, struct device_prefix
, node
);
1258 prefix_new
= container_of(node_new
, struct device_prefix
, node
);
1260 struct interface_ip_settings
*ip
= container_of(tree
, struct interface_ip_settings
, prefix
);
1261 if (tree
&& (!node_new
|| !node_old
))
1262 ip
->iface
->updated
|= IUF_PREFIX
;
1264 struct device_route route
;
1265 memset(&route
, 0, sizeof(route
));
1266 route
.flags
= DEVADDR_INET6
;
1267 route
.metric
= INT32_MAX
;
1268 route
.mask
= (node_new
) ? prefix_new
->length
: prefix_old
->length
;
1269 route
.addr
.in6
= (node_new
) ? prefix_new
->addr
: prefix_old
->addr
;
1272 struct device_prefix_assignment
*c
;
1273 struct interface
*iface
;
1275 if (node_old
&& node_new
) {
1276 /* Move assignments and refresh addresses to update valid times */
1277 list_splice(&prefix_old
->assignments
, &prefix_new
->assignments
);
1279 list_for_each_entry(c
, &prefix_new
->assignments
, head
)
1280 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1281 interface_set_prefix_address(c
, prefix_new
, iface
, true);
1283 if (prefix_new
->preferred_until
!= prefix_old
->preferred_until
||
1284 prefix_new
->valid_until
!= prefix_old
->valid_until
)
1285 ip
->iface
->updated
|= IUF_PREFIX
;
1286 } else if (node_new
) {
1287 /* Set null-route to avoid routing loops */
1288 system_add_route(NULL
, &route
);
1290 if (!prefix_new
->iface
|| !prefix_new
->iface
->proto_ip
.no_delegation
)
1291 interface_update_prefix_assignments(prefix_new
, true);
1292 } else if (node_old
) {
1293 /* Remove null-route */
1294 interface_update_prefix_assignments(prefix_old
, false);
1295 system_del_route(NULL
, &route
);
1299 if (prefix_old
->head
.next
)
1300 list_del(&prefix_old
->head
);
1304 if (node_new
&& (!prefix_new
->iface
|| !prefix_new
->iface
->proto_ip
.no_delegation
))
1305 list_add(&prefix_new
->head
, &prefixes
);
1309 struct device_prefix
*
1310 interface_ip_add_device_prefix(struct interface
*iface
, struct in6_addr
*addr
,
1311 uint8_t length
, time_t valid_until
, time_t preferred_until
,
1312 struct in6_addr
*excl_addr
, uint8_t excl_length
, const char *pclass
)
1314 union if_addr a
= { .in6
= *addr
};
1317 pclass
= (iface
) ? iface
->name
: "local";
1319 struct device_prefix
*prefix
= calloc(1, sizeof(*prefix
) + strlen(pclass
) + 1);
1323 clear_if_addr(&a
, length
);
1325 prefix
->length
= length
;
1326 prefix
->addr
= a
.in6
;
1327 prefix
->preferred_until
= preferred_until
;
1328 prefix
->valid_until
= valid_until
;
1329 prefix
->iface
= iface
;
1330 INIT_LIST_HEAD(&prefix
->assignments
);
1333 prefix
->excl_addr
= *excl_addr
;
1334 prefix
->excl_length
= excl_length
;
1337 strcpy(prefix
->pclass
, pclass
);
1340 vlist_add(&iface
->proto_ip
.prefix
, &prefix
->node
, &prefix
->addr
);
1342 interface_update_prefix(NULL
, &prefix
->node
, NULL
);
1348 interface_ip_set_ula_prefix(const char *prefix
)
1350 char buf
[INET6_ADDRSTRLEN
+ 4] = {0}, *saveptr
;
1352 strncpy(buf
, prefix
, sizeof(buf
) - 1);
1353 char *prefixaddr
= strtok_r(buf
, "/", &saveptr
);
1355 struct in6_addr addr
;
1356 if (!prefixaddr
|| inet_pton(AF_INET6
, prefixaddr
, &addr
) < 1) {
1358 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
1365 char *prefixlen
= strtok_r(NULL
, ",", &saveptr
);
1366 if (!prefixlen
|| (length
= atoi(prefixlen
)) < 1 || length
> 64)
1369 if (!ula_prefix
|| !IN6_ARE_ADDR_EQUAL(&addr
, &ula_prefix
->addr
) ||
1370 ula_prefix
->length
!= length
) {
1372 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
1374 ula_prefix
= interface_ip_add_device_prefix(NULL
, &addr
, length
,
1375 0, 0, NULL
, 0, NULL
);
1380 interface_add_dns_server(struct interface_ip_settings
*ip
, const char *str
)
1382 struct dns_server
*s
;
1384 s
= calloc(1, sizeof(*s
));
1389 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
1393 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
1400 D(INTERFACE
, "Add IPv%c DNS server: %s\n",
1401 s
->af
== AF_INET6
? '6' : '4', str
);
1402 vlist_simple_add(&ip
->dns_servers
, &s
->node
);
1406 interface_add_dns_server_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
1408 struct blob_attr
*cur
;
1411 blobmsg_for_each_attr(cur
, list
, rem
) {
1412 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
1415 if (!blobmsg_check_attr(cur
, false))
1418 interface_add_dns_server(ip
, blobmsg_data(cur
));
1423 interface_add_dns_search_domain(struct interface_ip_settings
*ip
, const char *str
)
1425 struct dns_search_domain
*s
;
1426 int len
= strlen(str
);
1428 s
= calloc(1, sizeof(*s
) + len
+ 1);
1432 D(INTERFACE
, "Add DNS search domain: %s\n", str
);
1433 memcpy(s
->name
, str
, len
);
1434 vlist_simple_add(&ip
->dns_search
, &s
->node
);
1438 interface_add_dns_search_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
1440 struct blob_attr
*cur
;
1443 blobmsg_for_each_attr(cur
, list
, rem
) {
1444 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
1447 if (!blobmsg_check_attr(cur
, false))
1450 interface_add_dns_search_domain(ip
, blobmsg_data(cur
));
1455 write_resolv_conf_entries(FILE *f
, struct interface_ip_settings
*ip
, const char *dev
)
1457 struct dns_server
*s
;
1458 struct dns_search_domain
*d
;
1460 char buf
[INET6_ADDRSTRLEN
];
1462 vlist_simple_for_each_element(&ip
->dns_servers
, s
, node
) {
1463 str
= inet_ntop(s
->af
, &s
->addr
, buf
, sizeof(buf
));
1467 if (s
->af
== AF_INET6
&& IN6_IS_ADDR_LINKLOCAL(&s
->addr
.in6
))
1468 fprintf(f
, "nameserver %s%%%s\n", str
, dev
);
1470 fprintf(f
, "nameserver %s\n", str
);
1473 vlist_simple_for_each_element(&ip
->dns_search
, d
, node
) {
1474 fprintf(f
, "search %s\n", d
->name
);
1478 /* Sorting of interface resolver entries : */
1479 /* Primary on interface dns_metric : lowest metric first */
1480 /* Secondary on interface metric : lowest metric first */
1481 /* Finally alphabetical order of interface names */
1482 static int resolv_conf_iface_cmp(const void *k1
, const void *k2
, void *ptr
)
1484 const struct interface
*iface1
= k1
, *iface2
= k2
;
1486 if (iface1
->dns_metric
!= iface2
->dns_metric
)
1487 return iface1
->dns_metric
- iface2
->dns_metric
;
1489 if (iface1
->metric
!= iface2
->metric
)
1490 return iface1
->metric
- iface2
->metric
;
1492 return strcmp(iface1
->name
, iface2
->name
);
1496 __interface_write_dns_entries(FILE *f
, const char *jail
)
1498 struct interface
*iface
;
1500 struct avl_node node
;
1502 struct avl_tree resolv_conf_iface_entries
;
1504 avl_init(&resolv_conf_iface_entries
, resolv_conf_iface_cmp
, false, NULL
);
1506 vlist_for_each_element(&interfaces
, iface
, node
) {
1507 if (iface
->state
!= IFS_UP
)
1510 if (jail
&& (!iface
->jail
|| strcmp(jail
, iface
->jail
)))
1513 if (vlist_simple_empty(&iface
->proto_ip
.dns_search
) &&
1514 vlist_simple_empty(&iface
->proto_ip
.dns_servers
) &&
1515 vlist_simple_empty(&iface
->config_ip
.dns_search
) &&
1516 vlist_simple_empty(&iface
->config_ip
.dns_servers
))
1519 entry
= calloc(1, sizeof(*entry
));
1523 entry
->node
.key
= iface
;
1524 avl_insert(&resolv_conf_iface_entries
, &entry
->node
);
1527 avl_for_each_element(&resolv_conf_iface_entries
, entry
, node
) {
1528 iface
= (struct interface
*)entry
->node
.key
;
1529 struct device
*dev
= iface
->l3_dev
.dev
;
1531 fprintf(f
, "# Interface %s\n", iface
->name
);
1533 write_resolv_conf_entries(f
, &iface
->config_ip
, dev
->ifname
);
1535 if (!iface
->proto_ip
.no_dns
)
1536 write_resolv_conf_entries(f
, &iface
->proto_ip
, dev
->ifname
);
1539 avl_remove_all_elements(&resolv_conf_iface_entries
, entry
, node
, n_entry
)
1544 interface_write_resolv_conf(const char *jail
)
1546 size_t plen
= (jail
? strlen(jail
) + 1 : 0 ) + strlen(resolv_conf
) + 1;
1547 char *path
= alloca(plen
);
1548 char *dpath
= alloca(plen
);
1549 char *tmppath
= alloca(plen
+ 4);
1551 uint32_t crcold
, crcnew
;
1554 sprintf(path
, "/tmp/resolv.conf-%s.d/resolv.conf.auto", jail
);
1555 strcpy(dpath
, path
);
1556 dpath
= dirname(dpath
);
1559 strcpy(path
, resolv_conf
);
1562 sprintf(tmppath
, "%s.tmp", path
);
1564 f
= fopen(tmppath
, "w+");
1566 D(INTERFACE
, "Failed to open %s for writing\n", path
);
1570 __interface_write_dns_entries(f
, jail
);
1574 crcnew
= crc32_file(f
);
1577 crcold
= crcnew
+ 1;
1578 f
= fopen(path
, "r");
1580 crcold
= crc32_file(f
);
1584 if (crcold
== crcnew
) {
1586 } else if (rename(tmppath
, path
) < 0) {
1587 D(INTERFACE
, "Failed to replace %s\n", path
);
1592 void interface_ip_set_enabled(struct interface_ip_settings
*ip
, bool enabled
)
1594 struct device_addr
*addr
;
1595 struct device_route
*route
;
1596 struct device_neighbor
*neighbor
;
1598 struct interface
*iface
;
1600 ip
->enabled
= enabled
;
1602 dev
= iface
->l3_dev
.dev
;
1606 vlist_for_each_element(&ip
->addr
, addr
, node
) {
1607 bool v6
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
) ? true : false;
1609 if (addr
->flags
& DEVADDR_EXTERNAL
)
1612 if (addr
->enabled
== enabled
)
1616 system_add_address(dev
, addr
);
1618 addr
->policy_table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
1619 if (iface
->metric
|| addr
->policy_table
)
1620 interface_handle_subnet_route(iface
, addr
, true);
1622 if ((addr
->flags
& DEVADDR_OFFLINK
) && (addr
->mask
< (v6
? 128 : 32))) {
1623 struct device_route route
;
1625 memset(&route
, 0, sizeof(route
));
1626 route
.flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
1627 route
.metric
= INT32_MAX
;
1628 route
.mask
= addr
->mask
;
1629 route
.addr
= addr
->addr
;
1631 clear_if_addr(&route
.addr
, route
.mask
);
1634 * In case off link is specifed as address property
1635 * add null-route to avoid routing loops
1637 system_add_route(NULL
, &route
);
1640 if (addr
->policy_table
)
1641 interface_add_addr_rules(addr
, true);
1643 interface_handle_subnet_route(iface
, addr
, false);
1644 system_del_address(dev
, addr
);
1646 if ((addr
->flags
& DEVADDR_OFFLINK
) && (addr
->mask
< (v6
? 128 : 32))) {
1647 struct device_route route
;
1649 memset(&route
, 0, sizeof(route
));
1650 route
.flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
1651 route
.metric
= INT32_MAX
;
1652 route
.mask
= addr
->mask
;
1653 route
.addr
= addr
->addr
;
1655 clear_if_addr(&route
.addr
, route
.mask
);
1657 /* Delete null-route */
1658 system_del_route(NULL
, &route
);
1661 if (addr
->policy_table
)
1662 interface_add_addr_rules(addr
, false);
1664 addr
->enabled
= enabled
;
1667 vlist_for_each_element(&ip
->route
, route
, node
) {
1668 bool _enabled
= enabled
;
1670 if (route
->flags
& DEVADDR_EXTERNAL
)
1673 if (!enable_route(ip
, route
))
1675 if (route
->enabled
== _enabled
)
1679 interface_set_route_info(ip
->iface
, route
);
1681 if (system_add_route(dev
, route
))
1682 route
->failed
= true;
1684 system_del_route(dev
, route
);
1686 route
->enabled
= _enabled
;
1689 vlist_for_each_element(&ip
->neighbor
, neighbor
, node
) {
1690 if (neighbor
->enabled
== enabled
)
1694 if(system_add_neighbor(dev
, neighbor
))
1695 neighbor
->failed
= true;
1697 system_del_neighbor(dev
, neighbor
);
1699 neighbor
->enabled
= enabled
;
1702 struct device_prefix
*c
;
1703 struct device_prefix_assignment
*a
;
1704 list_for_each_entry(c
, &prefixes
, head
)
1705 list_for_each_entry(a
, &c
->assignments
, head
)
1706 if (!strcmp(a
->name
, ip
->iface
->name
))
1707 interface_set_prefix_address(a
, c
, ip
->iface
, enabled
);
1709 if (ip
->iface
->policy_rules_set
!= enabled
&&
1710 ip
->iface
->l3_dev
.dev
) {
1711 set_ip_lo_policy(enabled
, true, ip
->iface
);
1712 set_ip_lo_policy(enabled
, false, ip
->iface
);
1714 set_ip_source_policy(enabled
, true, IPRULE_PRIORITY_REJECT
+ ip
->iface
->l3_dev
.dev
->ifindex
,
1715 NULL
, 0, 0, ip
->iface
, "failed_policy", true);
1716 ip
->iface
->policy_rules_set
= enabled
;
1721 interface_ip_update_start(struct interface_ip_settings
*ip
)
1723 if (ip
!= &ip
->iface
->config_ip
) {
1724 vlist_simple_update(&ip
->dns_servers
);
1725 vlist_simple_update(&ip
->dns_search
);
1727 vlist_update(&ip
->route
);
1728 vlist_update(&ip
->addr
);
1729 vlist_update(&ip
->prefix
);
1730 vlist_update(&ip
->neighbor
);
1734 interface_ip_update_complete(struct interface_ip_settings
*ip
)
1736 vlist_simple_flush(&ip
->dns_servers
);
1737 vlist_simple_flush(&ip
->dns_search
);
1738 vlist_flush(&ip
->route
);
1739 vlist_flush(&ip
->addr
);
1740 vlist_flush(&ip
->prefix
);
1741 vlist_flush(&ip
->neighbor
);
1742 interface_write_resolv_conf(ip
->iface
->jail
);
1746 interface_ip_flush(struct interface_ip_settings
*ip
)
1748 if (ip
== &ip
->iface
->proto_ip
)
1749 vlist_flush_all(&ip
->iface
->host_routes
);
1750 vlist_simple_flush_all(&ip
->dns_servers
);
1751 vlist_simple_flush_all(&ip
->dns_search
);
1752 vlist_flush_all(&ip
->route
);
1753 vlist_flush_all(&ip
->addr
);
1754 vlist_flush_all(&ip
->neighbor
);
1755 vlist_flush_all(&ip
->prefix
);
1759 __interface_ip_init(struct interface_ip_settings
*ip
, struct interface
*iface
)
1763 vlist_simple_init(&ip
->dns_search
, struct dns_search_domain
, node
);
1764 vlist_simple_init(&ip
->dns_servers
, struct dns_server
, node
);
1765 vlist_init(&ip
->route
, route_cmp
, interface_update_proto_route
);
1766 vlist_init(&ip
->neighbor
, neighbor_cmp
, interface_update_proto_neighbor
);
1767 vlist_init(&ip
->addr
, addr_cmp
, interface_update_proto_addr
);
1768 vlist_init(&ip
->prefix
, prefix_cmp
, interface_update_prefix
);
1772 interface_ip_init(struct interface
*iface
)
1774 __interface_ip_init(&iface
->proto_ip
, iface
);
1775 __interface_ip_init(&iface
->config_ip
, iface
);
1776 vlist_init(&iface
->host_routes
, route_cmp
, interface_update_host_route
);
1780 interface_ip_valid_until_handler(struct uloop_timeout
*t
)
1782 time_t now
= system_get_rtime();
1783 struct interface
*iface
;
1784 vlist_for_each_element(&interfaces
, iface
, node
) {
1785 if (iface
->state
!= IFS_UP
)
1788 struct device_addr
*addr
, *addrp
;
1789 struct device_route
*route
, *routep
;
1790 struct device_prefix
*pref
, *prefp
;
1792 vlist_for_each_element_safe(&iface
->proto_ip
.addr
, addr
, node
, addrp
)
1793 if (addr
->valid_until
&& addr
->valid_until
< now
)
1794 vlist_delete(&iface
->proto_ip
.addr
, &addr
->node
);
1796 vlist_for_each_element_safe(&iface
->proto_ip
.route
, route
, node
, routep
)
1797 if (route
->valid_until
&& route
->valid_until
< now
)
1798 vlist_delete(&iface
->proto_ip
.route
, &route
->node
);
1800 vlist_for_each_element_safe(&iface
->proto_ip
.prefix
, pref
, node
, prefp
)
1801 if (pref
->valid_until
&& pref
->valid_until
< now
)
1802 vlist_delete(&iface
->proto_ip
.prefix
, &pref
->node
);
1806 uloop_timeout_set(t
, 1000);
1810 interface_ip_init_worker(void)
1812 valid_until_timeout
.cb
= interface_ip_valid_until_handler
;
1813 uloop_timeout_set(&valid_until_timeout
, 1000);