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>
26 #include <netinet/ether.h>
28 #include <net/ethernet.h>
33 #include "interface.h"
34 #include "interface-ip.h"
55 static const struct blobmsg_policy route_attr
[__ROUTE_MAX
] = {
56 [ROUTE_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
57 [ROUTE_TARGET
] = { .name
= "target", .type
= BLOBMSG_TYPE_STRING
},
58 [ROUTE_MASK
] = { .name
= "netmask", .type
= BLOBMSG_TYPE_STRING
},
59 [ROUTE_GATEWAY
] = { .name
= "gateway", .type
= BLOBMSG_TYPE_STRING
},
60 [ROUTE_METRIC
] = { .name
= "metric", .type
= BLOBMSG_TYPE_INT32
},
61 [ROUTE_MTU
] = { .name
= "mtu", .type
= BLOBMSG_TYPE_INT32
},
62 [ROUTE_TABLE
] = { .name
= "table", .type
= BLOBMSG_TYPE_STRING
},
63 [ROUTE_VALID
] = { .name
= "valid", .type
= BLOBMSG_TYPE_INT32
},
64 [ROUTE_SOURCE
] = { .name
= "source", .type
= BLOBMSG_TYPE_STRING
},
65 [ROUTE_ONLINK
] = { .name
= "onlink", .type
= BLOBMSG_TYPE_BOOL
},
66 [ROUTE_TYPE
] = { .name
= "type", .type
= BLOBMSG_TYPE_STRING
},
67 [ROUTE_PROTO
] = { .name
= "proto", .type
= BLOBMSG_TYPE_STRING
},
70 const struct uci_blob_param_list route_attr_list
= {
71 .n_params
= __ROUTE_MAX
,
84 static const struct blobmsg_policy neighbor_attr
[__NEIGHBOR_MAX
]={
85 [NEIGHBOR_INTERFACE
]= { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
86 [NEIGHBOR_ADDRESS
]= { .name
= "ipaddr", .type
= BLOBMSG_TYPE_STRING
},
87 [NEIGHBOR_MAC
]= { .name
= "mac", .type
= BLOBMSG_TYPE_STRING
},
88 [NEIGHBOR_PROXY
]= { .name
= "proxy", .type
= BLOBMSG_TYPE_BOOL
},
89 [NEIGHBOR_ROUTER
]= {.name
= "router", .type
= BLOBMSG_TYPE_BOOL
},
92 const struct uci_blob_param_list neighbor_attr_list
= {
93 .n_params
= __NEIGHBOR_MAX
,
94 .params
= neighbor_attr
,
98 struct list_head prefixes
= LIST_HEAD_INIT(prefixes
);
99 static struct device_prefix
*ula_prefix
= NULL
;
100 static struct uloop_timeout valid_until_timeout
;
104 clear_if_addr(union if_addr
*a
, int mask
)
106 int m_bytes
= (mask
+ 7) / 8;
107 uint8_t m_clear
= (1 << (m_bytes
* 8 - mask
)) - 1;
108 uint8_t *p
= (uint8_t *) a
;
110 if (m_bytes
< sizeof(*a
))
111 memset(p
+ m_bytes
, 0, sizeof(*a
) - m_bytes
);
113 p
[m_bytes
- 1] &= ~m_clear
;
117 match_if_addr(union if_addr
*a1
, union if_addr
*a2
, int mask
)
119 union if_addr
*p1
, *p2
;
121 p1
= alloca(sizeof(*a1
));
122 p2
= alloca(sizeof(*a2
));
124 memcpy(p1
, a1
, sizeof(*a1
));
125 clear_if_addr(p1
, mask
);
126 memcpy(p2
, a2
, sizeof(*a2
));
127 clear_if_addr(p2
, mask
);
129 return !memcmp(p1
, p2
, sizeof(*p1
));
132 static int set_ip_source_policy(bool add
, bool v6
, unsigned int priority
,
133 const union if_addr
*addr
, uint8_t mask
, unsigned int table
,
134 struct interface
*in_iface
, const char *action
, bool src
)
136 struct iprule rule
= {
137 .flags
= IPRULE_PRIORITY
,
143 rule
.flags
|= IPRULE_SRC
;
144 rule
.src_addr
= *addr
;
145 rule
.src_mask
= mask
;
147 rule
.flags
|= IPRULE_DEST
;
148 rule
.dest_addr
= *addr
;
149 rule
.dest_mask
= mask
;
154 rule
.flags
|= IPRULE_LOOKUP
;
160 rule
.flags
|= IPRULE_ACTION
;
161 system_resolve_iprule_action(action
, &rule
.action
);
164 if (in_iface
&& in_iface
->l3_dev
.dev
) {
165 rule
.flags
|= IPRULE_IN
;
166 strcpy(rule
.in_dev
, in_iface
->l3_dev
.dev
->ifname
);
169 rule
.flags
|= (v6
) ? IPRULE_INET6
: IPRULE_INET4
;
171 return (add
) ? system_add_iprule(&rule
) : system_del_iprule(&rule
);
174 static int set_ip_lo_policy(bool add
, bool v6
, struct interface
*iface
)
176 struct iprule rule
= {
177 .flags
= IPRULE_IN
| IPRULE_LOOKUP
| IPRULE_PRIORITY
,
178 .priority
= IPRULE_PRIORITY_NW
+ iface
->l3_dev
.dev
->ifindex
,
179 .lookup
= (v6
) ? iface
->ip6table
: iface
->ip4table
,
186 rule
.flags
|= (v6
) ? IPRULE_INET6
: IPRULE_INET4
;
188 return (add
) ? system_add_iprule(&rule
) : system_del_iprule(&rule
);
192 __find_ip_addr_target(struct interface_ip_settings
*ip
, union if_addr
*a
, bool v6
)
194 struct device_addr
*addr
;
196 vlist_for_each_element(&ip
->addr
, addr
, node
) {
200 if (v6
!= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
203 if (((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) &&
204 addr
->point_to_point
&& a
->in
.s_addr
== addr
->point_to_point
)
207 /* Handle offlink addresses correctly */
208 unsigned int mask
= addr
->mask
;
209 if ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
&&
210 (addr
->flags
& DEVADDR_OFFLINK
))
213 if (!match_if_addr(&addr
->addr
, a
, mask
))
223 __find_ip_route_target(struct interface_ip_settings
*ip
, union if_addr
*a
,
224 bool v6
, struct device_route
**res
)
226 struct device_route
*route
;
228 vlist_for_each_element(&ip
->route
, route
, node
) {
232 if (v6
!= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
235 if (!match_if_addr(&route
->addr
, a
, route
->mask
))
238 if (route
->flags
& DEVROUTE_TABLE
)
241 if (!*res
|| route
->mask
> (*res
)->mask
)
247 interface_ip_find_addr_target(struct interface
*iface
, union if_addr
*a
, bool v6
)
249 return __find_ip_addr_target(&iface
->proto_ip
, a
, v6
) ||
250 __find_ip_addr_target(&iface
->config_ip
, a
, v6
);
254 interface_ip_find_route_target(struct interface
*iface
, union if_addr
*a
,
255 bool v6
, struct device_route
**route
)
257 __find_ip_route_target(&iface
->proto_ip
, a
, v6
, route
);
258 __find_ip_route_target(&iface
->config_ip
, a
, v6
, route
);
262 interface_ip_add_target_route(union if_addr
*addr
, bool v6
, struct interface
*iface
)
264 struct device_route
*route
, *r_next
= NULL
;
265 bool defaultroute_target
= false;
266 union if_addr addr_zero
;
267 int addrsize
= v6
? sizeof(addr
->in6
) : sizeof(addr
->in
);
269 memset(&addr_zero
, 0, sizeof(addr_zero
));
270 if (memcmp(&addr_zero
, addr
, addrsize
) == 0)
271 defaultroute_target
= true;
274 /* look for locally addressable target first */
275 if (interface_ip_find_addr_target(iface
, addr
, v6
))
278 /* do not stop at the first route, let the lookup compare
279 * masks to find the best match */
280 interface_ip_find_route_target(iface
, addr
, v6
, &r_next
);
282 vlist_for_each_element(&interfaces
, iface
, node
) {
283 /* look for locally addressable target first */
284 if (interface_ip_find_addr_target(iface
, addr
, v6
))
287 /* do not stop at the first route, let the lookup compare
288 * masks to find the best match */
289 interface_ip_find_route_target(iface
, addr
, v6
, &r_next
);
296 iface
= r_next
->iface
;
297 if (defaultroute_target
)
300 route
= calloc(1, sizeof(*route
));
304 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
305 route
->mask
= v6
? 128 : 32;
306 memcpy(&route
->addr
, addr
, addrsize
);
307 memcpy(&route
->nexthop
, &r_next
->nexthop
, sizeof(route
->nexthop
));
308 route
->mtu
= r_next
->mtu
;
309 route
->metric
= r_next
->metric
;
310 route
->table
= r_next
->table
;
311 route
->iface
= iface
;
312 vlist_add(&iface
->host_routes
, &route
->node
, route
);
318 interface_set_route_info(struct interface
*iface
, struct device_route
*route
)
320 bool v6
= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
);
325 if (!(route
->flags
& DEVROUTE_METRIC
))
326 route
->metric
= iface
->metric
;
328 if (!(route
->flags
& DEVROUTE_TABLE
)) {
329 route
->table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
331 route
->flags
|= DEVROUTE_SRCTABLE
;
336 interface_ip_add_neighbor(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
338 struct interface_ip_settings
*ip
;
339 struct blob_attr
*tb
[__NEIGHBOR_MAX
], *cur
;
340 struct device_neighbor
*neighbor
;
341 int af
= v6
? AF_INET6
: AF_INET
;
342 struct ether_addr
*ea
;
344 blobmsg_parse(neighbor_attr
, __NEIGHBOR_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
347 if ((cur
= tb
[NEIGHBOR_INTERFACE
]) == NULL
)
350 iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
355 ip
= &iface
->config_ip
;
357 ip
= &iface
->proto_ip
;
359 neighbor
= calloc(1,sizeof(*neighbor
));
363 neighbor
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
365 if ((cur
= tb
[NEIGHBOR_ADDRESS
]) != NULL
){
366 if (!inet_pton(af
, blobmsg_data(cur
), &neighbor
->addr
))
371 if ((cur
= tb
[NEIGHBOR_MAC
]) != NULL
) {
372 neighbor
->flags
|= DEVNEIGH_MAC
;
373 ea
= ether_aton(blobmsg_data(cur
));
377 memcpy(neighbor
->macaddr
, ea
, 6);
380 if ((cur
= tb
[NEIGHBOR_PROXY
]) != NULL
)
381 neighbor
->proxy
= blobmsg_get_bool(cur
);
383 if ((cur
= tb
[NEIGHBOR_ROUTER
]) != NULL
)
384 neighbor
->router
= blobmsg_get_bool(cur
);
386 vlist_add(&ip
->neighbor
, &neighbor
->node
, neighbor
);
394 interface_ip_add_route(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
396 struct interface_ip_settings
*ip
;
397 struct blob_attr
*tb
[__ROUTE_MAX
], *cur
;
398 struct device_route
*route
;
399 int af
= v6
? AF_INET6
: AF_INET
;
401 blobmsg_parse(route_attr
, __ROUTE_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
404 if ((cur
= tb
[ROUTE_INTERFACE
]) == NULL
)
407 iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
411 ip
= &iface
->config_ip
;
413 ip
= &iface
->proto_ip
;
416 route
= calloc(1, sizeof(*route
));
420 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
421 route
->mask
= v6
? 128 : 32;
422 if ((cur
= tb
[ROUTE_MASK
]) != NULL
) {
423 route
->mask
= parse_netmask_string(blobmsg_data(cur
), v6
);
424 if (route
->mask
> (v6
? 128 : 32))
428 if ((cur
= tb
[ROUTE_TARGET
]) != NULL
) {
429 if (!parse_ip_and_netmask(af
, blobmsg_data(cur
), &route
->addr
, &route
->mask
)) {
430 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur
));
435 if ((cur
= tb
[ROUTE_GATEWAY
]) != NULL
) {
436 if (!inet_pton(af
, blobmsg_data(cur
), &route
->nexthop
)) {
437 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur
));
442 if ((cur
= tb
[ROUTE_METRIC
]) != NULL
) {
443 route
->metric
= blobmsg_get_u32(cur
);
444 route
->flags
|= DEVROUTE_METRIC
;
447 if ((cur
= tb
[ROUTE_MTU
]) != NULL
) {
448 route
->mtu
= blobmsg_get_u32(cur
);
449 route
->flags
|= DEVROUTE_MTU
;
452 /* Use source-based routing */
453 if ((cur
= tb
[ROUTE_SOURCE
]) != NULL
) {
454 char *saveptr
, *source
= alloca(blobmsg_data_len(cur
));
455 memcpy(source
, blobmsg_data(cur
), blobmsg_data_len(cur
));
457 const char *addr
= strtok_r(source
, "/", &saveptr
);
458 const char *mask
= strtok_r(NULL
, "/", &saveptr
);
460 if (!addr
|| inet_pton(af
, addr
, &route
->source
) < 1) {
461 DPRINTF("Failed to parse route source: %s\n", addr
? addr
: "NULL");
465 route
->sourcemask
= (mask
) ? atoi(mask
) : ((af
== AF_INET6
) ? 128 : 32);
468 if ((cur
= tb
[ROUTE_ONLINK
]) != NULL
&& blobmsg_get_bool(cur
))
469 route
->flags
|= DEVROUTE_ONLINK
;
471 if ((cur
= tb
[ROUTE_TABLE
]) != NULL
) {
472 if (!system_resolve_rt_table(blobmsg_data(cur
), &route
->table
)) {
473 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
477 /* only set the table flag if not using the main (default) table */
478 if (system_is_default_rt_table(route
->table
))
482 route
->flags
|= DEVROUTE_TABLE
;
485 if ((cur
= tb
[ROUTE_VALID
]) != NULL
) {
486 int64_t valid
= blobmsg_get_u32(cur
);
487 int64_t valid_until
= valid
+ (int64_t)system_get_rtime();
488 if (valid_until
<= LONG_MAX
&& valid
!= 0xffffffffLL
) /* Catch overflow */
489 route
->valid_until
= valid_until
;
492 if ((cur
= tb
[ROUTE_TYPE
]) != NULL
) {
493 if (!system_resolve_rt_type(blobmsg_data(cur
), &route
->type
)) {
494 DPRINTF("Failed to resolve routing type: %s\n", (char *) blobmsg_data(cur
));
497 route
->flags
|= DEVROUTE_TYPE
;
500 if ((cur
= tb
[ROUTE_PROTO
]) != NULL
) {
501 if (!system_resolve_rt_proto(blobmsg_data(cur
), &route
->proto
)) {
502 DPRINTF("Failed to resolve proto type: %s\n", (char *) blobmsg_data(cur
));
505 route
->flags
|= DEVROUTE_PROTO
;
508 interface_set_route_info(iface
, route
);
509 vlist_add(&ip
->route
, &route
->node
, route
);
517 addr_cmp(const void *k1
, const void *k2
, void *ptr
)
519 const struct device_addr
*a1
= k1
;
520 const struct device_addr
*a2
= k2
;
521 const int cmp_offset
= offsetof(struct device_addr
, flags
);
522 const int cmp_size
= sizeof(struct device_addr
) - cmp_offset
;
524 if (a1
->index
!= a2
->index
)
525 return a1
->index
- a2
->index
;
526 return memcmp(k1
+cmp_offset
, k2
+cmp_offset
, cmp_size
);
530 neighbor_cmp(const void *k1
, const void *k2
, void *ptr
)
532 const struct device_neighbor
*n1
= k1
, *n2
= k2
;
534 return memcmp(&n1
->addr
, &n2
->addr
, sizeof(n2
->addr
));
538 route_cmp(const void *k1
, const void *k2
, void *ptr
)
540 const struct device_route
*r1
= k1
, *r2
= k2
;
542 if (r1
->mask
!= r2
->mask
)
543 return r2
->mask
- r1
->mask
;
545 if (r1
->metric
!= r2
->metric
)
546 return r1
->metric
- r2
->metric
;
548 if (r1
->flags
!= r2
->flags
)
549 return r2
->flags
- r1
->flags
;
551 if (r1
->sourcemask
!= r2
->sourcemask
)
552 return r1
->sourcemask
- r2
->sourcemask
;
554 if (r1
->table
!= r2
->table
)
555 return r1
->table
- r2
->table
;
557 int maskcmp
= memcmp(&r1
->source
, &r2
->source
, sizeof(r1
->source
));
561 return memcmp(&r1
->addr
, &r2
->addr
, sizeof(r1
->addr
));
565 prefix_cmp(const void *k1
, const void *k2
, void *ptr
)
567 return memcmp(k1
, k2
, offsetof(struct device_prefix
, pclass
) -
568 offsetof(struct device_prefix
, addr
));
572 interface_handle_subnet_route(struct interface
*iface
, struct device_addr
*addr
, bool add
)
574 struct device
*dev
= iface
->l3_dev
.dev
;
575 struct device_route
*r
= &addr
->subnet
;
577 if (addr
->flags
& DEVADDR_OFFLINK
)
581 if (!addr
->subnet
.iface
)
584 system_del_route(dev
, r
);
585 memset(r
, 0, sizeof(*r
));
590 r
->flags
= addr
->flags
;
591 r
->mask
= addr
->mask
;
592 memcpy(&r
->addr
, &addr
->addr
, sizeof(r
->addr
));
593 clear_if_addr(&r
->addr
, r
->mask
);
595 if (!system_resolve_rt_proto("kernel", &r
->proto
))
598 r
->flags
|= DEVROUTE_PROTO
;
599 system_del_route(dev
, r
);
601 r
->flags
&= ~DEVROUTE_PROTO
;
602 interface_set_route_info(iface
, r
);
604 system_add_route(dev
, r
);
608 interface_add_addr_rules(struct device_addr
*addr
, bool enabled
)
610 bool v6
= (addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
;
612 set_ip_source_policy(enabled
, v6
, IPRULE_PRIORITY_ADDR
, &addr
->addr
,
613 (v6
) ? 128 : 32, addr
->policy_table
, NULL
, NULL
,
615 set_ip_source_policy(enabled
, v6
, IPRULE_PRIORITY_ADDR_MASK
,
616 &addr
->addr
, addr
->mask
, addr
->policy_table
, NULL
,
621 interface_update_proto_addr(struct vlist_tree
*tree
,
622 struct vlist_node
*node_new
,
623 struct vlist_node
*node_old
)
625 struct interface_ip_settings
*ip
;
626 struct interface
*iface
;
628 struct device_addr
*a_new
= NULL
, *a_old
= NULL
;
629 bool replace
= false;
633 ip
= container_of(tree
, struct interface_ip_settings
, addr
);
635 dev
= iface
->l3_dev
.dev
;
637 if (!node_new
|| !node_old
)
638 iface
->updated
|= IUF_ADDRESS
;
641 a_new
= container_of(node_new
, struct device_addr
, node
);
643 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
&&
646 /* /31 and /32 addressing need 255.255.255.255
647 * as broadcast address. */
648 if (a_new
->mask
>= 31) {
649 a_new
->broadcast
= (uint32_t) ~0;
652 uint32_t *a
= (uint32_t *) &a_new
->addr
;
654 mask
>>= a_new
->mask
;
655 a_new
->broadcast
= *a
| htonl(mask
);
661 a_old
= container_of(node_old
, struct device_addr
, node
);
663 if (a_new
&& a_old
) {
666 if (a_old
->flags
!= a_new
->flags
|| a_old
->failed
)
669 if (a_old
->valid_until
!= a_new
->valid_until
||
670 a_old
->preferred_until
!= a_new
->preferred_until
)
673 if (((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) &&
674 (a_new
->broadcast
!= a_old
->broadcast
||
675 a_new
->point_to_point
!= a_old
->point_to_point
))
680 if (a_old
->enabled
&& !keep
) {
682 * This is needed for source routing to work correctly. If a device
683 * has two connections to a network using the same subnet, adding
684 * only the network-rule will cause packets to be routed through the
685 * first matching network (source IP matches both masks)
687 if (a_old
->policy_table
)
688 interface_add_addr_rules(a_old
, false);
690 if (!(a_old
->flags
& DEVADDR_EXTERNAL
)) {
691 interface_handle_subnet_route(iface
, a_old
, false);
692 system_del_address(dev
, a_old
);
700 a_new
->enabled
= true;
702 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
)
705 a_new
->policy_table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
707 if (!keep
|| replace
) {
708 if (!(a_new
->flags
& DEVADDR_EXTERNAL
)) {
709 if (system_add_address(dev
, a_new
))
710 a_new
->failed
= true;
712 if (iface
->metric
|| a_new
->policy_table
)
713 interface_handle_subnet_route(iface
, a_new
, true);
717 if (a_new
->policy_table
)
718 interface_add_addr_rules(a_new
, true);
725 enable_route(struct interface_ip_settings
*ip
, struct device_route
*route
)
727 if (ip
->no_defaultroute
&& !route
->mask
)
734 interface_update_proto_neighbor(struct vlist_tree
*tree
,
735 struct vlist_node
* node_new
,
736 struct vlist_node
*node_old
)
739 struct device_neighbor
*neighbor_old
, *neighbor_new
;
740 struct interface_ip_settings
*ip
;
743 ip
= container_of(tree
, struct interface_ip_settings
, neighbor
);
744 dev
= ip
->iface
->l3_dev
.dev
;
746 neighbor_old
= container_of(node_old
, struct device_neighbor
, node
);
747 neighbor_new
= container_of(node_new
, struct device_neighbor
, node
);
749 if (node_old
&& node_new
) {
750 keep
= (!memcmp(neighbor_old
->macaddr
, neighbor_new
->macaddr
, sizeof(neighbor_old
->macaddr
)) &&
751 (neighbor_old
->proxy
== neighbor_new
->proxy
) &&
752 (neighbor_old
->router
== neighbor_new
->router
));
756 if (!keep
&& neighbor_old
->enabled
)
757 system_del_neighbor(dev
, neighbor_old
);
763 if (!keep
&& ip
->enabled
)
764 if (system_add_neighbor(dev
, neighbor_new
))
765 neighbor_new
->failed
= true;
767 neighbor_new
->enabled
= ip
->enabled
;
772 interface_update_proto_route(struct vlist_tree
*tree
,
773 struct vlist_node
*node_new
,
774 struct vlist_node
*node_old
)
776 struct interface_ip_settings
*ip
;
777 struct interface
*iface
;
779 struct device_route
*route_old
, *route_new
;
782 ip
= container_of(tree
, struct interface_ip_settings
, route
);
784 dev
= iface
->l3_dev
.dev
;
786 if (!node_new
|| !node_old
)
787 iface
->updated
|= IUF_ROUTE
;
789 route_old
= container_of(node_old
, struct device_route
, node
);
790 route_new
= container_of(node_new
, struct device_route
, node
);
792 if (node_old
&& node_new
)
793 keep
= !memcmp(&route_old
->nexthop
, &route_new
->nexthop
, sizeof(route_old
->nexthop
)) &&
794 (route_old
->mtu
== route_new
->mtu
) && (route_old
->type
== route_new
->type
) &&
795 (route_old
->proto
== route_new
->proto
) && !route_old
->failed
;
798 if (!(route_old
->flags
& DEVADDR_EXTERNAL
) && route_old
->enabled
&& !keep
)
799 system_del_route(dev
, route_old
);
805 bool _enabled
= enable_route(ip
, route_new
);
807 if (!(route_new
->flags
& DEVADDR_EXTERNAL
) && !keep
&& _enabled
)
808 if (system_add_route(dev
, route_new
))
809 route_new
->failed
= true;
811 route_new
->iface
= iface
;
812 route_new
->enabled
= _enabled
;
817 interface_update_host_route(struct vlist_tree
*tree
,
818 struct vlist_node
*node_new
,
819 struct vlist_node
*node_old
)
821 struct interface
*iface
;
823 struct device_route
*route_old
, *route_new
;
825 iface
= container_of(tree
, struct interface
, host_routes
);
826 dev
= iface
->l3_dev
.dev
;
828 route_old
= container_of(node_old
, struct device_route
, node
);
829 route_new
= container_of(node_new
, struct device_route
, node
);
832 system_del_route(dev
, route_old
);
837 if (system_add_route(dev
, route_new
))
838 route_new
->failed
= true;
843 random_ifaceid(struct in6_addr
*addr
)
845 static bool initialized
= false;
850 gettimeofday(&t
, NULL
);
851 seed
= t
.tv_sec
^ t
.tv_usec
^ getpid();
855 addr
->s6_addr32
[2] = (uint32_t)mrand48();
856 addr
->s6_addr32
[3] = (uint32_t)mrand48();
860 eui64_ifaceid(struct interface
*iface
, struct in6_addr
*addr
)
862 struct device_settings st
;
864 device_merge_settings(iface
->l3_dev
.dev
, &st
);
866 if (!(st
.flags
& DEV_OPT_MACADDR
))
869 /* get mac address */
870 uint8_t *ifaceid
= addr
->s6_addr
+ 8;
871 memcpy(ifaceid
, st
.macaddr
, 3);
872 memcpy(ifaceid
+ 5, st
.macaddr
+ 3, 3);
881 generate_ifaceid(struct interface
*iface
, struct in6_addr
*addr
)
885 /* generate new iface id */
886 switch (iface
->assignment_iface_id_selection
) {
889 /* copy host part from assignment_fixed_iface_id */
890 memcpy(addr
->s6_addr
+ 8, iface
->assignment_fixed_iface_id
.s6_addr
+ 8, 8);
893 /* randomize last 64 bits */
894 random_ifaceid(addr
);
898 ret
= eui64_ifaceid(iface
, addr
);
908 interface_set_prefix_address(struct device_prefix_assignment
*assignment
,
909 const struct device_prefix
*prefix
, struct interface
*iface
, bool add
)
911 const struct interface
*uplink
= prefix
->iface
;
912 if (!iface
->l3_dev
.dev
)
915 struct device
*l3_downlink
= iface
->l3_dev
.dev
;
917 struct device_addr addr
;
918 struct device_route route
;
919 memset(&addr
, 0, sizeof(addr
));
920 memset(&route
, 0, sizeof(route
));
922 addr
.addr
.in6
= assignment
->addr
;
923 addr
.mask
= assignment
->length
;
924 addr
.flags
= DEVADDR_INET6
;
925 addr
.preferred_until
= prefix
->preferred_until
;
926 addr
.valid_until
= prefix
->valid_until
;
928 route
.flags
= DEVADDR_INET6
;
929 route
.mask
= addr
.mask
< 64 ? 64 : addr
.mask
;
930 route
.addr
= addr
.addr
;
932 if (!add
&& assignment
->enabled
) {
933 time_t now
= system_get_rtime();
935 addr
.preferred_until
= now
;
936 if (!addr
.valid_until
|| addr
.valid_until
- now
> 7200)
937 addr
.valid_until
= now
+ 7200;
940 set_ip_source_policy(false, true, IPRULE_PRIORITY_ADDR_MASK
, &addr
.addr
,
941 addr
.mask
< 64 ? 64 : addr
.mask
, iface
->ip6table
, NULL
, NULL
, false);
944 if (prefix
->iface
->ip6table
)
945 set_ip_source_policy(false, true, IPRULE_PRIORITY_NW
, &addr
.addr
,
946 addr
.mask
, prefix
->iface
->ip6table
, iface
, NULL
, true);
948 set_ip_source_policy(false, true, IPRULE_PRIORITY_REJECT
, &addr
.addr
,
949 addr
.mask
, 0, iface
, "unreachable", true);
952 clear_if_addr(&route
.addr
, route
.mask
);
953 interface_set_route_info(iface
, &route
);
955 system_del_route(l3_downlink
, &route
);
956 system_add_address(l3_downlink
, &addr
);
958 assignment
->addr
= in6addr_any
;
959 assignment
->enabled
= false;
960 } else if (add
&& (iface
->state
== IFS_UP
|| iface
->state
== IFS_SETUP
)) {
961 if (IN6_IS_ADDR_UNSPECIFIED(&addr
.addr
.in6
)) {
962 addr
.addr
.in6
= prefix
->addr
;
963 addr
.addr
.in6
.s6_addr32
[1] |= htonl(assignment
->assigned
);
964 if (!generate_ifaceid(iface
, &addr
.addr
.in6
))
967 assignment
->addr
= addr
.addr
.in6
;
968 route
.addr
= addr
.addr
;
971 addr
.flags
|= DEVADDR_OFFLINK
;
972 if (system_add_address(l3_downlink
, &addr
))
975 if (!assignment
->enabled
) {
977 set_ip_source_policy(true, true, IPRULE_PRIORITY_ADDR_MASK
, &addr
.addr
,
978 addr
.mask
< 64 ? 64 : addr
.mask
, iface
->ip6table
, NULL
, NULL
, false);
981 set_ip_source_policy(true, true, IPRULE_PRIORITY_REJECT
, &addr
.addr
,
982 addr
.mask
, 0, iface
, "unreachable", true);
984 if (prefix
->iface
->ip6table
)
985 set_ip_source_policy(true, true, IPRULE_PRIORITY_NW
, &addr
.addr
,
986 addr
.mask
, prefix
->iface
->ip6table
, iface
, NULL
, true);
990 clear_if_addr(&route
.addr
, route
.mask
);
991 interface_set_route_info(iface
, &route
);
993 system_add_route(l3_downlink
, &route
);
995 if (uplink
&& uplink
->l3_dev
.dev
&& !(l3_downlink
->settings
.flags
& DEV_OPT_MTU6
)) {
996 int mtu
= system_update_ipv6_mtu(uplink
->l3_dev
.dev
, 0);
997 int mtu_old
= system_update_ipv6_mtu(l3_downlink
, 0);
999 if (mtu
> 0 && mtu_old
!= mtu
) {
1000 if (system_update_ipv6_mtu(l3_downlink
, mtu
) < 0 && mtu
< mtu_old
)
1001 netifd_log_message(L_WARNING
, "Failed to set IPv6 mtu to %d "
1002 "on interface '%s'\n", mtu
, iface
->name
);
1006 assignment
->enabled
= true;
1010 static bool interface_prefix_assign(struct list_head
*list
,
1011 struct device_prefix_assignment
*assign
)
1013 int32_t current
= 0, asize
= (1 << (64 - assign
->length
)) - 1;
1014 struct device_prefix_assignment
*c
;
1015 list_for_each_entry(c
, list
, head
) {
1016 if (assign
->assigned
!= -1) {
1017 if (assign
->assigned
>= current
&& assign
->assigned
+ asize
< c
->assigned
) {
1018 list_add_tail(&assign
->head
, &c
->head
);
1021 } else if (assign
->assigned
== -1) {
1022 current
= (current
+ asize
) & (~asize
);
1023 if (current
+ asize
< c
->assigned
) {
1024 assign
->assigned
= current
;
1025 list_add_tail(&assign
->head
, &c
->head
);
1029 current
= (c
->assigned
+ (1 << (64 - c
->length
)));
1035 * Sorting of assignment entries:
1036 * Primary on assignment length: smallest assignment first
1037 * Secondary on assignment weight: highest weight first
1038 * Finally alphabetical order of interface names
1040 static int prefix_assignment_cmp(const void *k1
, const void *k2
, void *ptr
)
1042 const struct device_prefix_assignment
*a1
= k1
, *a2
= k2
;
1044 if (a1
->length
!= a2
->length
)
1045 return a1
->length
- a2
->length
;
1047 if (a1
->weight
!= a2
->weight
)
1048 return a2
->weight
- a1
->weight
;
1050 return strcmp(a1
->name
, a2
->name
);
1053 static void interface_update_prefix_assignments(struct device_prefix
*prefix
, bool setup
)
1055 struct device_prefix_assignment
*c
;
1056 struct interface
*iface
;
1058 /* Delete all assignments */
1059 while (!list_empty(&prefix
->assignments
)) {
1060 c
= list_first_entry(&prefix
->assignments
,
1061 struct device_prefix_assignment
, head
);
1062 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1063 interface_set_prefix_address(c
, prefix
, iface
, false);
1071 /* End-of-assignment sentinel */
1072 c
= malloc(sizeof(*c
) + 1);
1076 c
->assigned
= 1 << (64 - prefix
->length
);
1079 c
->addr
= in6addr_any
;
1080 list_add(&c
->head
, &prefix
->assignments
);
1082 /* Excluded prefix */
1083 if (prefix
->excl_length
> 0) {
1084 const char name
[] = "!excluded";
1085 c
= malloc(sizeof(*c
) + sizeof(name
));
1087 c
->assigned
= ntohl(prefix
->excl_addr
.s6_addr32
[1]) &
1088 ((1 << (64 - prefix
->length
)) - 1);
1089 c
->length
= prefix
->excl_length
;
1090 c
->addr
= in6addr_any
;
1091 memcpy(c
->name
, name
, sizeof(name
));
1092 list_add(&c
->head
, &prefix
->assignments
);
1096 bool assigned_any
= false;
1098 struct avl_node node
;
1100 struct avl_tree assign_later
;
1102 avl_init(&assign_later
, prefix_assignment_cmp
, false, NULL
);
1104 vlist_for_each_element(&interfaces
, iface
, node
) {
1105 if (iface
->assignment_length
< 48 ||
1106 iface
->assignment_length
> 64)
1109 /* Test whether there is a matching class */
1110 if (!list_empty(&iface
->assignment_classes
)) {
1113 struct interface_assignment_class
*c
;
1114 list_for_each_entry(c
, &iface
->assignment_classes
, head
) {
1115 if (!strcmp(c
->name
, prefix
->pclass
)) {
1125 size_t namelen
= strlen(iface
->name
) + 1;
1126 c
= malloc(sizeof(*c
) + namelen
);
1130 c
->length
= iface
->assignment_length
;
1131 c
->assigned
= iface
->assignment_hint
;
1132 c
->weight
= iface
->assignment_weight
;
1133 c
->addr
= in6addr_any
;
1135 memcpy(c
->name
, iface
->name
, namelen
);
1137 /* First process all custom assignments, put all others in later-list */
1138 if (c
->assigned
== -1 || !interface_prefix_assign(&prefix
->assignments
, c
)) {
1139 if (c
->assigned
!= -1) {
1141 netifd_log_message(L_WARNING
, "Failed to assign requested subprefix "
1142 "of size %hhu for %s, trying other\n", c
->length
, c
->name
);
1145 entry
= calloc(1, sizeof(*entry
));
1151 entry
->node
.key
= c
;
1152 avl_insert(&assign_later
, &entry
->node
);
1155 if (c
->assigned
!= -1)
1156 assigned_any
= true;
1159 /* Then try to assign all other + failed custom assignments */
1160 avl_for_each_element_safe(&assign_later
, entry
, node
, n_entry
) {
1161 bool assigned
= false;
1163 c
= (struct device_prefix_assignment
*)entry
->node
.key
;
1164 avl_delete(&assign_later
, &entry
->node
);
1167 assigned
= interface_prefix_assign(&prefix
->assignments
, c
);
1168 } while (!assigned
&& ++c
->length
<= 64);
1171 netifd_log_message(L_WARNING
, "Failed to assign subprefix "
1172 "of size %hhu for %s\n", c
->length
, c
->name
);
1175 assigned_any
= true;
1180 list_for_each_entry(c
, &prefix
->assignments
, head
)
1181 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1182 interface_set_prefix_address(c
, prefix
, iface
, true);
1185 netifd_log_message(L_WARNING
, "You have delegated IPv6-prefixes but haven't assigned them "
1186 "to any interface. Did you forget to set option ip6assign on your lan-interfaces?");
1190 void interface_refresh_assignments(bool hint
)
1192 static bool refresh
= false;
1193 if (!hint
&& refresh
) {
1194 struct device_prefix
*p
;
1195 list_for_each_entry(p
, &prefixes
, head
)
1196 interface_update_prefix_assignments(p
, true);
1201 void interface_update_prefix_delegation(struct interface_ip_settings
*ip
)
1203 struct device_prefix
*prefix
;
1205 vlist_for_each_element(&ip
->prefix
, prefix
, node
) {
1206 interface_update_prefix_assignments(prefix
, !ip
->no_delegation
);
1208 if (ip
->no_delegation
) {
1209 if (prefix
->head
.next
)
1210 list_del(&prefix
->head
);
1212 list_add(&prefix
->head
, &prefixes
);
1217 interface_update_prefix(struct vlist_tree
*tree
,
1218 struct vlist_node
*node_new
,
1219 struct vlist_node
*node_old
)
1221 struct device_prefix
*prefix_old
, *prefix_new
;
1222 prefix_old
= container_of(node_old
, struct device_prefix
, node
);
1223 prefix_new
= container_of(node_new
, struct device_prefix
, node
);
1225 struct interface_ip_settings
*ip
= container_of(tree
, struct interface_ip_settings
, prefix
);
1226 if (tree
&& (!node_new
|| !node_old
))
1227 ip
->iface
->updated
|= IUF_PREFIX
;
1229 struct device_route route
;
1230 memset(&route
, 0, sizeof(route
));
1231 route
.flags
= DEVADDR_INET6
;
1232 route
.metric
= INT32_MAX
;
1233 route
.mask
= (node_new
) ? prefix_new
->length
: prefix_old
->length
;
1234 route
.addr
.in6
= (node_new
) ? prefix_new
->addr
: prefix_old
->addr
;
1237 struct device_prefix_assignment
*c
;
1238 struct interface
*iface
;
1240 if (node_old
&& node_new
) {
1241 /* Move assignments and refresh addresses to update valid times */
1242 list_splice(&prefix_old
->assignments
, &prefix_new
->assignments
);
1244 list_for_each_entry(c
, &prefix_new
->assignments
, head
)
1245 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1246 interface_set_prefix_address(c
, prefix_new
, iface
, true);
1248 if (prefix_new
->preferred_until
!= prefix_old
->preferred_until
||
1249 prefix_new
->valid_until
!= prefix_old
->valid_until
)
1250 ip
->iface
->updated
|= IUF_PREFIX
;
1251 } else if (node_new
) {
1252 /* Set null-route to avoid routing loops */
1253 system_add_route(NULL
, &route
);
1255 if (!prefix_new
->iface
|| !prefix_new
->iface
->proto_ip
.no_delegation
)
1256 interface_update_prefix_assignments(prefix_new
, true);
1257 } else if (node_old
) {
1258 /* Remove null-route */
1259 interface_update_prefix_assignments(prefix_old
, false);
1260 system_del_route(NULL
, &route
);
1264 if (prefix_old
->head
.next
)
1265 list_del(&prefix_old
->head
);
1269 if (node_new
&& (!prefix_new
->iface
|| !prefix_new
->iface
->proto_ip
.no_delegation
))
1270 list_add(&prefix_new
->head
, &prefixes
);
1274 struct device_prefix
*
1275 interface_ip_add_device_prefix(struct interface
*iface
, struct in6_addr
*addr
,
1276 uint8_t length
, time_t valid_until
, time_t preferred_until
,
1277 struct in6_addr
*excl_addr
, uint8_t excl_length
, const char *pclass
)
1279 union if_addr a
= { .in6
= *addr
};
1282 pclass
= (iface
) ? iface
->name
: "local";
1284 struct device_prefix
*prefix
= calloc(1, sizeof(*prefix
) + strlen(pclass
) + 1);
1288 clear_if_addr(&a
, length
);
1290 prefix
->length
= length
;
1291 prefix
->addr
= a
.in6
;
1292 prefix
->preferred_until
= preferred_until
;
1293 prefix
->valid_until
= valid_until
;
1294 prefix
->iface
= iface
;
1295 INIT_LIST_HEAD(&prefix
->assignments
);
1298 prefix
->excl_addr
= *excl_addr
;
1299 prefix
->excl_length
= excl_length
;
1302 strcpy(prefix
->pclass
, pclass
);
1305 vlist_add(&iface
->proto_ip
.prefix
, &prefix
->node
, &prefix
->addr
);
1307 interface_update_prefix(NULL
, &prefix
->node
, NULL
);
1313 interface_ip_set_ula_prefix(const char *prefix
)
1315 char buf
[INET6_ADDRSTRLEN
+ 4] = {0}, *saveptr
;
1317 strncpy(buf
, prefix
, sizeof(buf
) - 1);
1318 char *prefixaddr
= strtok_r(buf
, "/", &saveptr
);
1320 struct in6_addr addr
;
1321 if (!prefixaddr
|| inet_pton(AF_INET6
, prefixaddr
, &addr
) < 1) {
1323 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
1330 char *prefixlen
= strtok_r(NULL
, ",", &saveptr
);
1331 if (!prefixlen
|| (length
= atoi(prefixlen
)) < 1 || length
> 64)
1334 if (!ula_prefix
|| !IN6_ARE_ADDR_EQUAL(&addr
, &ula_prefix
->addr
) ||
1335 ula_prefix
->length
!= length
) {
1337 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
1339 ula_prefix
= interface_ip_add_device_prefix(NULL
, &addr
, length
,
1340 0, 0, NULL
, 0, NULL
);
1345 interface_add_dns_server(struct interface_ip_settings
*ip
, const char *str
)
1347 struct dns_server
*s
;
1349 s
= calloc(1, sizeof(*s
));
1354 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
1358 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
1365 D(INTERFACE
, "Add IPv%c DNS server: %s\n",
1366 s
->af
== AF_INET6
? '6' : '4', str
);
1367 vlist_simple_add(&ip
->dns_servers
, &s
->node
);
1371 interface_add_dns_server_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
1373 struct blob_attr
*cur
;
1376 blobmsg_for_each_attr(cur
, list
, rem
) {
1377 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
1380 if (!blobmsg_check_attr(cur
, false))
1383 interface_add_dns_server(ip
, blobmsg_data(cur
));
1388 interface_add_dns_search_domain(struct interface_ip_settings
*ip
, const char *str
)
1390 struct dns_search_domain
*s
;
1391 int len
= strlen(str
);
1393 s
= calloc(1, sizeof(*s
) + len
+ 1);
1397 D(INTERFACE
, "Add DNS search domain: %s\n", str
);
1398 memcpy(s
->name
, str
, len
);
1399 vlist_simple_add(&ip
->dns_search
, &s
->node
);
1403 interface_add_dns_search_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
1405 struct blob_attr
*cur
;
1408 blobmsg_for_each_attr(cur
, list
, rem
) {
1409 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
1412 if (!blobmsg_check_attr(cur
, false))
1415 interface_add_dns_search_domain(ip
, blobmsg_data(cur
));
1420 write_resolv_conf_entries(FILE *f
, struct interface_ip_settings
*ip
, const char *dev
)
1422 struct dns_server
*s
;
1423 struct dns_search_domain
*d
;
1425 char buf
[INET6_ADDRSTRLEN
];
1427 vlist_simple_for_each_element(&ip
->dns_servers
, s
, node
) {
1428 str
= inet_ntop(s
->af
, &s
->addr
, buf
, sizeof(buf
));
1432 if (s
->af
== AF_INET6
&& IN6_IS_ADDR_LINKLOCAL(&s
->addr
.in6
))
1433 fprintf(f
, "nameserver %s%%%s\n", str
, dev
);
1435 fprintf(f
, "nameserver %s\n", str
);
1438 vlist_simple_for_each_element(&ip
->dns_search
, d
, node
) {
1439 fprintf(f
, "search %s\n", d
->name
);
1443 /* Sorting of interface resolver entries : */
1444 /* Primary on interface dns_metric : lowest metric first */
1445 /* Secondary on interface metric : lowest metric first */
1446 /* Finally alphabetical order of interface names */
1447 static int resolv_conf_iface_cmp(const void *k1
, const void *k2
, void *ptr
)
1449 const struct interface
*iface1
= k1
, *iface2
= k2
;
1451 if (iface1
->dns_metric
!= iface2
->dns_metric
)
1452 return iface1
->dns_metric
- iface2
->dns_metric
;
1454 if (iface1
->metric
!= iface2
->metric
)
1455 return iface1
->metric
- iface2
->metric
;
1457 return strcmp(iface1
->name
, iface2
->name
);
1461 __interface_write_dns_entries(FILE *f
, const char *jail
)
1463 struct interface
*iface
;
1465 struct avl_node node
;
1467 struct avl_tree resolv_conf_iface_entries
;
1469 avl_init(&resolv_conf_iface_entries
, resolv_conf_iface_cmp
, false, NULL
);
1471 vlist_for_each_element(&interfaces
, iface
, node
) {
1472 if (iface
->state
!= IFS_UP
)
1475 if (jail
&& (!iface
->jail
|| strcmp(jail
, iface
->jail
)))
1478 if (vlist_simple_empty(&iface
->proto_ip
.dns_search
) &&
1479 vlist_simple_empty(&iface
->proto_ip
.dns_servers
) &&
1480 vlist_simple_empty(&iface
->config_ip
.dns_search
) &&
1481 vlist_simple_empty(&iface
->config_ip
.dns_servers
))
1484 entry
= calloc(1, sizeof(*entry
));
1488 entry
->node
.key
= iface
;
1489 avl_insert(&resolv_conf_iface_entries
, &entry
->node
);
1492 avl_for_each_element(&resolv_conf_iface_entries
, entry
, node
) {
1493 iface
= (struct interface
*)entry
->node
.key
;
1494 struct device
*dev
= iface
->l3_dev
.dev
;
1496 fprintf(f
, "# Interface %s\n", iface
->name
);
1498 write_resolv_conf_entries(f
, &iface
->config_ip
, dev
->ifname
);
1500 if (!iface
->proto_ip
.no_dns
)
1501 write_resolv_conf_entries(f
, &iface
->proto_ip
, dev
->ifname
);
1504 avl_remove_all_elements(&resolv_conf_iface_entries
, entry
, node
, n_entry
)
1509 interface_write_resolv_conf(const char *jail
)
1511 size_t plen
= (jail
? strlen(jail
) + 1 : 0 ) + strlen(resolv_conf
) + 1;
1512 char *path
= alloca(plen
);
1513 char *dpath
= alloca(plen
);
1514 char *tmppath
= alloca(plen
+ 4);
1516 uint32_t crcold
, crcnew
;
1519 sprintf(path
, "/tmp/resolv.conf-%s.d/resolv.conf.auto", jail
);
1520 strcpy(dpath
, path
);
1521 dpath
= dirname(dpath
);
1524 strcpy(path
, resolv_conf
);
1527 sprintf(tmppath
, "%s.tmp", path
);
1529 f
= fopen(tmppath
, "w+");
1531 D(INTERFACE
, "Failed to open %s for writing\n", path
);
1535 __interface_write_dns_entries(f
, jail
);
1539 crcnew
= crc32_file(f
);
1542 crcold
= crcnew
+ 1;
1543 f
= fopen(path
, "r");
1545 crcold
= crc32_file(f
);
1549 if (crcold
== crcnew
) {
1551 } else if (rename(tmppath
, path
) < 0) {
1552 D(INTERFACE
, "Failed to replace %s\n", path
);
1557 void interface_ip_set_enabled(struct interface_ip_settings
*ip
, bool enabled
)
1559 struct device_addr
*addr
;
1560 struct device_route
*route
;
1561 struct device_neighbor
*neighbor
;
1563 struct interface
*iface
;
1565 ip
->enabled
= enabled
;
1567 dev
= iface
->l3_dev
.dev
;
1571 vlist_for_each_element(&ip
->addr
, addr
, node
) {
1572 bool v6
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
) ? true : false;
1574 if (addr
->flags
& DEVADDR_EXTERNAL
)
1577 if (addr
->enabled
== enabled
)
1581 system_add_address(dev
, addr
);
1583 addr
->policy_table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
1584 if (iface
->metric
|| addr
->policy_table
)
1585 interface_handle_subnet_route(iface
, addr
, true);
1587 if (addr
->policy_table
)
1588 interface_add_addr_rules(addr
, true);
1590 interface_handle_subnet_route(iface
, addr
, false);
1591 system_del_address(dev
, addr
);
1593 if (addr
->policy_table
)
1594 interface_add_addr_rules(addr
, false);
1596 addr
->enabled
= enabled
;
1599 vlist_for_each_element(&ip
->route
, route
, node
) {
1600 bool _enabled
= enabled
;
1602 if (route
->flags
& DEVADDR_EXTERNAL
)
1605 if (!enable_route(ip
, route
))
1607 if (route
->enabled
== _enabled
)
1611 interface_set_route_info(ip
->iface
, route
);
1613 if (system_add_route(dev
, route
))
1614 route
->failed
= true;
1616 system_del_route(dev
, route
);
1617 route
->enabled
= _enabled
;
1620 vlist_for_each_element(&ip
->neighbor
, neighbor
, node
) {
1621 if (neighbor
->enabled
== enabled
)
1625 if(system_add_neighbor(dev
, neighbor
))
1626 neighbor
->failed
= true;
1628 system_del_neighbor(dev
, neighbor
);
1630 neighbor
->enabled
= enabled
;
1633 struct device_prefix
*c
;
1634 struct device_prefix_assignment
*a
;
1635 list_for_each_entry(c
, &prefixes
, head
)
1636 list_for_each_entry(a
, &c
->assignments
, head
)
1637 if (!strcmp(a
->name
, ip
->iface
->name
))
1638 interface_set_prefix_address(a
, c
, ip
->iface
, enabled
);
1640 if (ip
->iface
->policy_rules_set
!= enabled
&&
1641 ip
->iface
->l3_dev
.dev
) {
1642 set_ip_lo_policy(enabled
, true, ip
->iface
);
1643 set_ip_lo_policy(enabled
, false, ip
->iface
);
1645 set_ip_source_policy(enabled
, true, IPRULE_PRIORITY_REJECT
+ ip
->iface
->l3_dev
.dev
->ifindex
,
1646 NULL
, 0, 0, ip
->iface
, "failed_policy", true);
1647 ip
->iface
->policy_rules_set
= enabled
;
1652 interface_ip_update_start(struct interface_ip_settings
*ip
)
1654 if (ip
!= &ip
->iface
->config_ip
) {
1655 vlist_simple_update(&ip
->dns_servers
);
1656 vlist_simple_update(&ip
->dns_search
);
1658 vlist_update(&ip
->route
);
1659 vlist_update(&ip
->addr
);
1660 vlist_update(&ip
->prefix
);
1661 vlist_update(&ip
->neighbor
);
1665 interface_ip_update_complete(struct interface_ip_settings
*ip
)
1667 vlist_simple_flush(&ip
->dns_servers
);
1668 vlist_simple_flush(&ip
->dns_search
);
1669 vlist_flush(&ip
->route
);
1670 vlist_flush(&ip
->addr
);
1671 vlist_flush(&ip
->prefix
);
1672 vlist_flush(&ip
->neighbor
);
1673 interface_write_resolv_conf(ip
->iface
->jail
);
1677 interface_ip_flush(struct interface_ip_settings
*ip
)
1679 if (ip
== &ip
->iface
->proto_ip
)
1680 vlist_flush_all(&ip
->iface
->host_routes
);
1681 vlist_simple_flush_all(&ip
->dns_servers
);
1682 vlist_simple_flush_all(&ip
->dns_search
);
1683 vlist_flush_all(&ip
->route
);
1684 vlist_flush_all(&ip
->addr
);
1685 vlist_flush_all(&ip
->neighbor
);
1686 vlist_flush_all(&ip
->prefix
);
1690 __interface_ip_init(struct interface_ip_settings
*ip
, struct interface
*iface
)
1694 vlist_simple_init(&ip
->dns_search
, struct dns_search_domain
, node
);
1695 vlist_simple_init(&ip
->dns_servers
, struct dns_server
, node
);
1696 vlist_init(&ip
->route
, route_cmp
, interface_update_proto_route
);
1697 vlist_init(&ip
->neighbor
, neighbor_cmp
, interface_update_proto_neighbor
);
1698 vlist_init(&ip
->addr
, addr_cmp
, interface_update_proto_addr
);
1699 vlist_init(&ip
->prefix
, prefix_cmp
, interface_update_prefix
);
1703 interface_ip_init(struct interface
*iface
)
1705 __interface_ip_init(&iface
->proto_ip
, iface
);
1706 __interface_ip_init(&iface
->config_ip
, iface
);
1707 vlist_init(&iface
->host_routes
, route_cmp
, interface_update_host_route
);
1711 interface_ip_valid_until_handler(struct uloop_timeout
*t
)
1713 time_t now
= system_get_rtime();
1714 struct interface
*iface
;
1715 vlist_for_each_element(&interfaces
, iface
, node
) {
1716 if (iface
->state
!= IFS_UP
)
1719 struct device_addr
*addr
, *addrp
;
1720 struct device_route
*route
, *routep
;
1721 struct device_prefix
*pref
, *prefp
;
1723 vlist_for_each_element_safe(&iface
->proto_ip
.addr
, addr
, node
, addrp
)
1724 if (addr
->valid_until
&& addr
->valid_until
< now
)
1725 vlist_delete(&iface
->proto_ip
.addr
, &addr
->node
);
1727 vlist_for_each_element_safe(&iface
->proto_ip
.route
, route
, node
, routep
)
1728 if (route
->valid_until
&& route
->valid_until
< now
)
1729 vlist_delete(&iface
->proto_ip
.route
, &route
->node
);
1731 vlist_for_each_element_safe(&iface
->proto_ip
.prefix
, pref
, node
, prefp
)
1732 if (pref
->valid_until
&& pref
->valid_until
< now
)
1733 vlist_delete(&iface
->proto_ip
.prefix
, &pref
->node
);
1737 uloop_timeout_set(t
, 1000);
1741 interface_ip_init_worker(void)
1743 valid_until_timeout
.cb
= interface_ip_valid_until_handler
;
1744 uloop_timeout_set(&valid_until_timeout
, 1000);