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>
31 #include "interface.h"
32 #include "interface-ip.h"
53 static const struct blobmsg_policy route_attr
[__ROUTE_MAX
] = {
54 [ROUTE_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
55 [ROUTE_TARGET
] = { .name
= "target", .type
= BLOBMSG_TYPE_STRING
},
56 [ROUTE_MASK
] = { .name
= "netmask", .type
= BLOBMSG_TYPE_STRING
},
57 [ROUTE_GATEWAY
] = { .name
= "gateway", .type
= BLOBMSG_TYPE_STRING
},
58 [ROUTE_METRIC
] = { .name
= "metric", .type
= BLOBMSG_TYPE_INT32
},
59 [ROUTE_MTU
] = { .name
= "mtu", .type
= BLOBMSG_TYPE_INT32
},
60 [ROUTE_TABLE
] = { .name
= "table", .type
= BLOBMSG_TYPE_STRING
},
61 [ROUTE_VALID
] = { .name
= "valid", .type
= BLOBMSG_TYPE_INT32
},
62 [ROUTE_SOURCE
] = { .name
= "source", .type
= BLOBMSG_TYPE_STRING
},
63 [ROUTE_ONLINK
] = { .name
= "onlink", .type
= BLOBMSG_TYPE_BOOL
},
64 [ROUTE_TYPE
] = { .name
= "type", .type
= BLOBMSG_TYPE_STRING
},
65 [ROUTE_PROTO
] = { .name
= "proto", .type
= BLOBMSG_TYPE_STRING
},
68 const struct uci_blob_param_list route_attr_list
= {
69 .n_params
= __ROUTE_MAX
,
82 static const struct blobmsg_policy neighbor_attr
[__NEIGHBOR_MAX
]={
83 [NEIGHBOR_INTERFACE
]= { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
84 [NEIGHBOR_ADDRESS
]= { .name
= "ipaddr", .type
= BLOBMSG_TYPE_STRING
},
85 [NEIGHBOR_MAC
]= { .name
= "mac", .type
= BLOBMSG_TYPE_STRING
},
86 [NEIGHBOR_PROXY
]= { .name
= "proxy", .type
= BLOBMSG_TYPE_BOOL
},
87 [NEIGHBOR_ROUTER
]= {.name
= "router", .type
= BLOBMSG_TYPE_BOOL
},
90 const struct uci_blob_param_list neighbor_attr_list
= {
91 .n_params
= __NEIGHBOR_MAX
,
92 .params
= neighbor_attr
,
96 struct list_head prefixes
= LIST_HEAD_INIT(prefixes
);
97 static struct device_prefix
*ula_prefix
= NULL
;
98 static struct uloop_timeout valid_until_timeout
;
102 clear_if_addr(union if_addr
*a
, int mask
)
104 int m_bytes
= (mask
+ 7) / 8;
105 uint8_t m_clear
= (1 << (m_bytes
* 8 - mask
)) - 1;
106 uint8_t *p
= (uint8_t *) a
;
108 if (m_bytes
< sizeof(*a
))
109 memset(p
+ m_bytes
, 0, sizeof(*a
) - m_bytes
);
111 p
[m_bytes
- 1] &= ~m_clear
;
115 match_if_addr(union if_addr
*a1
, union if_addr
*a2
, int mask
)
117 union if_addr
*p1
, *p2
;
119 p1
= alloca(sizeof(*a1
));
120 p2
= alloca(sizeof(*a2
));
122 memcpy(p1
, a1
, sizeof(*a1
));
123 clear_if_addr(p1
, mask
);
124 memcpy(p2
, a2
, sizeof(*a2
));
125 clear_if_addr(p2
, mask
);
127 return !memcmp(p1
, p2
, sizeof(*p1
));
130 static int set_ip_source_policy(bool add
, bool v6
, unsigned int priority
,
131 const union if_addr
*addr
, uint8_t mask
, unsigned int table
,
132 struct interface
*in_iface
, const char *action
, bool src
)
134 struct iprule rule
= {
135 .flags
= IPRULE_PRIORITY
,
141 rule
.flags
|= IPRULE_SRC
;
142 rule
.src_addr
= *addr
;
143 rule
.src_mask
= mask
;
145 rule
.flags
|= IPRULE_DEST
;
146 rule
.dest_addr
= *addr
;
147 rule
.dest_mask
= mask
;
152 rule
.flags
|= IPRULE_LOOKUP
;
158 rule
.flags
|= IPRULE_ACTION
;
159 system_resolve_iprule_action(action
, &rule
.action
);
162 if (in_iface
&& in_iface
->l3_dev
.dev
) {
163 rule
.flags
|= IPRULE_IN
;
164 strcpy(rule
.in_dev
, in_iface
->l3_dev
.dev
->ifname
);
167 rule
.flags
|= (v6
) ? IPRULE_INET6
: IPRULE_INET4
;
169 return (add
) ? system_add_iprule(&rule
) : system_del_iprule(&rule
);
172 static int set_ip_lo_policy(bool add
, bool v6
, struct interface
*iface
)
174 struct iprule rule
= {
175 .flags
= IPRULE_IN
| IPRULE_LOOKUP
| IPRULE_PRIORITY
,
176 .priority
= IPRULE_PRIORITY_NW
+ iface
->l3_dev
.dev
->ifindex
,
177 .lookup
= (v6
) ? iface
->ip6table
: iface
->ip4table
,
184 rule
.flags
|= (v6
) ? IPRULE_INET6
: IPRULE_INET4
;
186 return (add
) ? system_add_iprule(&rule
) : system_del_iprule(&rule
);
190 __find_ip_addr_target(struct interface_ip_settings
*ip
, union if_addr
*a
, bool v6
)
192 struct device_addr
*addr
;
194 vlist_for_each_element(&ip
->addr
, addr
, node
) {
198 if (v6
!= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
201 if (((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) &&
202 addr
->point_to_point
&& a
->in
.s_addr
== addr
->point_to_point
)
205 /* Handle offlink addresses correctly */
206 unsigned int mask
= addr
->mask
;
207 if ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
&&
208 (addr
->flags
& DEVADDR_OFFLINK
))
211 if (!match_if_addr(&addr
->addr
, a
, mask
))
221 __find_ip_route_target(struct interface_ip_settings
*ip
, union if_addr
*a
,
222 bool v6
, struct device_route
**res
)
224 struct device_route
*route
;
226 vlist_for_each_element(&ip
->route
, route
, node
) {
230 if (v6
!= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
233 if (!match_if_addr(&route
->addr
, a
, route
->mask
))
236 if (route
->flags
& DEVROUTE_TABLE
)
239 if (!*res
|| route
->mask
> (*res
)->mask
)
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
));
402 if ((cur
= tb
[ROUTE_INTERFACE
]) == NULL
)
405 iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
409 ip
= &iface
->config_ip
;
411 ip
= &iface
->proto_ip
;
414 route
= calloc(1, sizeof(*route
));
418 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
419 route
->mask
= v6
? 128 : 32;
420 if ((cur
= tb
[ROUTE_MASK
]) != NULL
) {
421 route
->mask
= parse_netmask_string(blobmsg_data(cur
), v6
);
422 if (route
->mask
> (v6
? 128 : 32))
426 if ((cur
= tb
[ROUTE_TARGET
]) != NULL
) {
427 if (!parse_ip_and_netmask(af
, blobmsg_data(cur
), &route
->addr
, &route
->mask
)) {
428 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur
));
433 if ((cur
= tb
[ROUTE_GATEWAY
]) != NULL
) {
434 if (!inet_pton(af
, blobmsg_data(cur
), &route
->nexthop
)) {
435 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur
));
440 if ((cur
= tb
[ROUTE_METRIC
]) != NULL
) {
441 route
->metric
= blobmsg_get_u32(cur
);
442 route
->flags
|= DEVROUTE_METRIC
;
445 if ((cur
= tb
[ROUTE_MTU
]) != NULL
) {
446 route
->mtu
= blobmsg_get_u32(cur
);
447 route
->flags
|= DEVROUTE_MTU
;
450 /* Use source-based routing */
451 if ((cur
= tb
[ROUTE_SOURCE
]) != NULL
) {
452 char *saveptr
, *source
= alloca(blobmsg_data_len(cur
));
453 memcpy(source
, blobmsg_data(cur
), blobmsg_data_len(cur
));
455 const char *addr
= strtok_r(source
, "/", &saveptr
);
456 const char *mask
= strtok_r(NULL
, "/", &saveptr
);
458 if (!addr
|| inet_pton(af
, addr
, &route
->source
) < 1) {
459 DPRINTF("Failed to parse route source: %s\n", addr
? addr
: "NULL");
463 route
->sourcemask
= (mask
) ? atoi(mask
) : ((af
== AF_INET6
) ? 128 : 32);
466 if ((cur
= tb
[ROUTE_ONLINK
]) != NULL
&& blobmsg_get_bool(cur
))
467 route
->flags
|= DEVROUTE_ONLINK
;
469 if ((cur
= tb
[ROUTE_TABLE
]) != NULL
) {
470 if (!system_resolve_rt_table(blobmsg_data(cur
), &route
->table
)) {
471 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
475 /* only set the table flag if not using the main (default) table */
476 if (system_is_default_rt_table(route
->table
))
480 route
->flags
|= DEVROUTE_TABLE
;
483 if ((cur
= tb
[ROUTE_VALID
]) != NULL
) {
484 int64_t valid
= blobmsg_get_u32(cur
);
485 int64_t valid_until
= valid
+ (int64_t)system_get_rtime();
486 if (valid_until
<= LONG_MAX
&& valid
!= 0xffffffffLL
) /* Catch overflow */
487 route
->valid_until
= valid_until
;
490 if ((cur
= tb
[ROUTE_TYPE
]) != NULL
) {
491 if (!system_resolve_rt_type(blobmsg_data(cur
), &route
->type
)) {
492 DPRINTF("Failed to resolve routing type: %s\n", (char *) blobmsg_data(cur
));
495 route
->flags
|= DEVROUTE_TYPE
;
498 if ((cur
= tb
[ROUTE_PROTO
]) != NULL
) {
499 if (!system_resolve_rt_proto(blobmsg_data(cur
), &route
->proto
)) {
500 DPRINTF("Failed to resolve proto type: %s\n", (char *) blobmsg_data(cur
));
503 route
->flags
|= DEVROUTE_PROTO
;
506 interface_set_route_info(iface
, route
);
507 vlist_add(&ip
->route
, &route
->node
, route
);
515 addr_cmp(const void *k1
, const void *k2
, void *ptr
)
517 return memcmp(k1
, k2
, sizeof(struct device_addr
) -
518 offsetof(struct device_addr
, flags
));
522 neighbor_cmp(const void *k1
, const void *k2
, void *ptr
)
524 const struct device_neighbor
*n1
= k1
, *n2
= k2
;
526 return memcmp(&n1
->addr
, &n2
->addr
, sizeof(n2
->addr
));
530 route_cmp(const void *k1
, const void *k2
, void *ptr
)
532 const struct device_route
*r1
= k1
, *r2
= k2
;
534 if (r1
->mask
!= r2
->mask
)
535 return r2
->mask
- r1
->mask
;
537 if (r1
->metric
!= r2
->metric
)
538 return r1
->metric
- r2
->metric
;
540 if (r1
->flags
!= r2
->flags
)
541 return r2
->flags
- r1
->flags
;
543 if (r1
->sourcemask
!= r2
->sourcemask
)
544 return r1
->sourcemask
- r2
->sourcemask
;
546 if (r1
->table
!= r2
->table
)
547 return r1
->table
- r2
->table
;
549 int maskcmp
= memcmp(&r1
->source
, &r2
->source
, sizeof(r1
->source
));
553 return memcmp(&r1
->addr
, &r2
->addr
, sizeof(r1
->addr
));
557 prefix_cmp(const void *k1
, const void *k2
, void *ptr
)
559 return memcmp(k1
, k2
, offsetof(struct device_prefix
, pclass
) -
560 offsetof(struct device_prefix
, addr
));
564 interface_handle_subnet_route(struct interface
*iface
, struct device_addr
*addr
, bool add
)
566 struct device
*dev
= iface
->l3_dev
.dev
;
567 struct device_route
*r
= &addr
->subnet
;
569 if (addr
->flags
& DEVADDR_OFFLINK
)
573 if (!addr
->subnet
.iface
)
576 system_del_route(dev
, r
);
577 memset(r
, 0, sizeof(*r
));
582 r
->flags
= addr
->flags
;
583 r
->mask
= addr
->mask
;
584 memcpy(&r
->addr
, &addr
->addr
, sizeof(r
->addr
));
585 clear_if_addr(&r
->addr
, r
->mask
);
587 if (!system_resolve_rt_proto("kernel", &r
->proto
))
590 r
->flags
|= DEVROUTE_PROTO
;
591 system_del_route(dev
, r
);
593 r
->flags
&= ~DEVROUTE_PROTO
;
594 interface_set_route_info(iface
, r
);
596 system_add_route(dev
, r
);
600 interface_add_addr_rules(struct device_addr
*addr
, bool enabled
)
602 bool v6
= (addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
;
604 set_ip_source_policy(enabled
, v6
, IPRULE_PRIORITY_ADDR
, &addr
->addr
,
605 (v6
) ? 128 : 32, addr
->policy_table
, NULL
, NULL
,
607 set_ip_source_policy(enabled
, v6
, IPRULE_PRIORITY_ADDR_MASK
,
608 &addr
->addr
, addr
->mask
, addr
->policy_table
, NULL
,
613 interface_update_proto_addr(struct vlist_tree
*tree
,
614 struct vlist_node
*node_new
,
615 struct vlist_node
*node_old
)
617 struct interface_ip_settings
*ip
;
618 struct interface
*iface
;
620 struct device_addr
*a_new
= NULL
, *a_old
= NULL
;
621 bool replace
= false;
625 ip
= container_of(tree
, struct interface_ip_settings
, addr
);
627 dev
= iface
->l3_dev
.dev
;
629 if (!node_new
|| !node_old
)
630 iface
->updated
|= IUF_ADDRESS
;
633 a_new
= container_of(node_new
, struct device_addr
, node
);
635 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
&&
638 /* /31 and /32 addressing need 255.255.255.255
639 * as broadcast address. */
640 if (a_new
->mask
>= 31) {
641 a_new
->broadcast
= (uint32_t) ~0;
644 uint32_t *a
= (uint32_t *) &a_new
->addr
;
646 mask
>>= a_new
->mask
;
647 a_new
->broadcast
= *a
| htonl(mask
);
653 a_old
= container_of(node_old
, struct device_addr
, node
);
655 if (a_new
&& a_old
) {
658 if (a_old
->flags
!= a_new
->flags
|| a_old
->failed
)
661 if (a_old
->valid_until
!= a_new
->valid_until
||
662 a_old
->preferred_until
!= a_new
->preferred_until
)
665 if (((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
) &&
666 (a_new
->broadcast
!= a_old
->broadcast
||
667 a_new
->point_to_point
!= a_old
->point_to_point
))
672 if (a_old
->enabled
&& !keep
) {
674 * This is needed for source routing to work correctly. If a device
675 * has two connections to a network using the same subnet, adding
676 * only the network-rule will cause packets to be routed through the
677 * first matching network (source IP matches both masks)
679 if (a_old
->policy_table
)
680 interface_add_addr_rules(a_old
, false);
682 if (!(a_old
->flags
& DEVADDR_EXTERNAL
)) {
683 interface_handle_subnet_route(iface
, a_old
, false);
684 system_del_address(dev
, a_old
);
692 a_new
->enabled
= true;
694 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
)
697 a_new
->policy_table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
699 if (!keep
|| replace
) {
700 if (!(a_new
->flags
& DEVADDR_EXTERNAL
)) {
701 if (system_add_address(dev
, a_new
))
702 a_new
->failed
= true;
704 if (iface
->metric
|| a_new
->policy_table
)
705 interface_handle_subnet_route(iface
, a_new
, true);
709 if (a_new
->policy_table
)
710 interface_add_addr_rules(a_new
, true);
717 enable_route(struct interface_ip_settings
*ip
, struct device_route
*route
)
719 if (ip
->no_defaultroute
&& !route
->mask
)
726 interface_update_proto_neighbor(struct vlist_tree
*tree
,
727 struct vlist_node
* node_new
,
728 struct vlist_node
*node_old
)
731 struct device_neighbor
*neighbor_old
, *neighbor_new
;
732 struct interface_ip_settings
*ip
;
735 ip
= container_of(tree
, struct interface_ip_settings
, neighbor
);
736 dev
= ip
->iface
->l3_dev
.dev
;
738 neighbor_old
= container_of(node_old
, struct device_neighbor
, node
);
739 neighbor_new
= container_of(node_new
, struct device_neighbor
, node
);
741 if (node_old
&& node_new
) {
742 keep
= (!memcmp(neighbor_old
->macaddr
, neighbor_new
->macaddr
, sizeof(neighbor_old
->macaddr
)) &&
743 (neighbor_old
->proxy
== neighbor_new
->proxy
) &&
744 (neighbor_old
->router
== neighbor_new
->router
));
748 if (!keep
&& neighbor_old
->enabled
)
749 system_del_neighbor(dev
, neighbor_old
);
755 if (!keep
&& ip
->enabled
)
756 if (system_add_neighbor(dev
, neighbor_new
))
757 neighbor_new
->failed
= true;
759 neighbor_new
->enabled
= ip
->enabled
;
764 interface_update_proto_route(struct vlist_tree
*tree
,
765 struct vlist_node
*node_new
,
766 struct vlist_node
*node_old
)
768 struct interface_ip_settings
*ip
;
769 struct interface
*iface
;
771 struct device_route
*route_old
, *route_new
;
774 ip
= container_of(tree
, struct interface_ip_settings
, route
);
776 dev
= iface
->l3_dev
.dev
;
778 if (!node_new
|| !node_old
)
779 iface
->updated
|= IUF_ROUTE
;
781 route_old
= container_of(node_old
, struct device_route
, node
);
782 route_new
= container_of(node_new
, struct device_route
, node
);
784 if (node_old
&& node_new
)
785 keep
= !memcmp(&route_old
->nexthop
, &route_new
->nexthop
, sizeof(route_old
->nexthop
)) &&
786 (route_old
->mtu
== route_new
->mtu
) && (route_old
->type
== route_new
->type
) &&
787 (route_old
->proto
== route_new
->proto
) && !route_old
->failed
;
790 if (!(route_old
->flags
& DEVADDR_EXTERNAL
) && route_old
->enabled
&& !keep
)
791 system_del_route(dev
, route_old
);
797 bool _enabled
= enable_route(ip
, route_new
);
799 if (!(route_new
->flags
& DEVADDR_EXTERNAL
) && !keep
&& _enabled
)
800 if (system_add_route(dev
, route_new
))
801 route_new
->failed
= true;
803 route_new
->iface
= iface
;
804 route_new
->enabled
= _enabled
;
809 interface_update_host_route(struct vlist_tree
*tree
,
810 struct vlist_node
*node_new
,
811 struct vlist_node
*node_old
)
813 struct interface
*iface
;
815 struct device_route
*route_old
, *route_new
;
817 iface
= container_of(tree
, struct interface
, host_routes
);
818 dev
= iface
->l3_dev
.dev
;
820 route_old
= container_of(node_old
, struct device_route
, node
);
821 route_new
= container_of(node_new
, struct device_route
, node
);
824 system_del_route(dev
, route_old
);
829 if (system_add_route(dev
, route_new
))
830 route_new
->failed
= true;
835 random_ifaceid(struct in6_addr
*addr
)
837 static bool initialized
= false;
842 gettimeofday(&t
, NULL
);
843 seed
= t
.tv_sec
^ t
.tv_usec
^ getpid();
847 addr
->s6_addr32
[2] = (uint32_t)mrand48();
848 addr
->s6_addr32
[3] = (uint32_t)mrand48();
852 eui64_ifaceid(struct interface
*iface
, struct in6_addr
*addr
)
854 struct device_settings st
;
856 device_merge_settings(iface
->l3_dev
.dev
, &st
);
858 if (!(st
.flags
& DEV_OPT_MACADDR
))
861 /* get mac address */
862 uint8_t *ifaceid
= addr
->s6_addr
+ 8;
863 memcpy(ifaceid
, st
.macaddr
, 3);
864 memcpy(ifaceid
+ 5, st
.macaddr
+ 3, 3);
873 generate_ifaceid(struct interface
*iface
, struct in6_addr
*addr
)
877 /* generate new iface id */
878 switch (iface
->assignment_iface_id_selection
) {
881 /* copy host part from assignment_fixed_iface_id */
882 memcpy(addr
->s6_addr
+ 8, iface
->assignment_fixed_iface_id
.s6_addr
+ 8, 8);
885 /* randomize last 64 bits */
886 random_ifaceid(addr
);
890 ret
= eui64_ifaceid(iface
, addr
);
900 interface_set_prefix_address(struct device_prefix_assignment
*assignment
,
901 const struct device_prefix
*prefix
, struct interface
*iface
, bool add
)
903 const struct interface
*uplink
= prefix
->iface
;
904 if (!iface
->l3_dev
.dev
)
907 struct device
*l3_downlink
= iface
->l3_dev
.dev
;
909 struct device_addr addr
;
910 struct device_route route
;
911 memset(&addr
, 0, sizeof(addr
));
912 memset(&route
, 0, sizeof(route
));
914 addr
.addr
.in6
= assignment
->addr
;
915 addr
.mask
= assignment
->length
;
916 addr
.flags
= DEVADDR_INET6
| DEVADDR_OFFLINK
;
917 addr
.preferred_until
= prefix
->preferred_until
;
918 addr
.valid_until
= prefix
->valid_until
;
920 route
.flags
= DEVADDR_INET6
;
921 route
.mask
= addr
.mask
< 64 ? 64 : addr
.mask
;
922 route
.addr
= addr
.addr
;
924 if (!add
&& assignment
->enabled
) {
925 time_t now
= system_get_rtime();
927 addr
.preferred_until
= now
;
928 if (!addr
.valid_until
|| addr
.valid_until
- now
> 7200)
929 addr
.valid_until
= now
+ 7200;
932 set_ip_source_policy(false, true, IPRULE_PRIORITY_ADDR_MASK
, &addr
.addr
,
933 addr
.mask
< 64 ? 64 : addr
.mask
, iface
->ip6table
, NULL
, NULL
, false);
936 if (prefix
->iface
->ip6table
)
937 set_ip_source_policy(false, true, IPRULE_PRIORITY_NW
, &addr
.addr
,
938 addr
.mask
, prefix
->iface
->ip6table
, iface
, NULL
, true);
940 set_ip_source_policy(false, true, IPRULE_PRIORITY_REJECT
, &addr
.addr
,
941 addr
.mask
, 0, iface
, "unreachable", true);
944 clear_if_addr(&route
.addr
, route
.mask
);
945 interface_set_route_info(iface
, &route
);
947 system_del_route(l3_downlink
, &route
);
948 system_add_address(l3_downlink
, &addr
);
950 assignment
->addr
= in6addr_any
;
951 assignment
->enabled
= false;
952 } else if (add
&& (iface
->state
== IFS_UP
|| iface
->state
== IFS_SETUP
)) {
953 if (IN6_IS_ADDR_UNSPECIFIED(&addr
.addr
.in6
)) {
954 addr
.addr
.in6
= prefix
->addr
;
955 addr
.addr
.in6
.s6_addr32
[1] |= htonl(assignment
->assigned
);
956 if (!generate_ifaceid(iface
, &addr
.addr
.in6
))
959 assignment
->addr
= addr
.addr
.in6
;
960 route
.addr
= addr
.addr
;
963 if (system_add_address(l3_downlink
, &addr
))
966 if (!assignment
->enabled
) {
968 set_ip_source_policy(true, true, IPRULE_PRIORITY_ADDR_MASK
, &addr
.addr
,
969 addr
.mask
< 64 ? 64 : addr
.mask
, iface
->ip6table
, NULL
, NULL
, false);
972 set_ip_source_policy(true, true, IPRULE_PRIORITY_REJECT
, &addr
.addr
,
973 addr
.mask
, 0, iface
, "unreachable", true);
975 if (prefix
->iface
->ip6table
)
976 set_ip_source_policy(true, true, IPRULE_PRIORITY_NW
, &addr
.addr
,
977 addr
.mask
, prefix
->iface
->ip6table
, iface
, NULL
, true);
981 clear_if_addr(&route
.addr
, route
.mask
);
982 interface_set_route_info(iface
, &route
);
984 system_add_route(l3_downlink
, &route
);
986 if (uplink
&& uplink
->l3_dev
.dev
&& !(l3_downlink
->settings
.flags
& DEV_OPT_MTU6
)) {
987 int mtu
= system_update_ipv6_mtu(uplink
->l3_dev
.dev
, 0);
988 int mtu_old
= system_update_ipv6_mtu(l3_downlink
, 0);
990 if (mtu
> 0 && mtu_old
!= mtu
) {
991 if (system_update_ipv6_mtu(l3_downlink
, mtu
) < 0 && mtu
< mtu_old
)
992 netifd_log_message(L_WARNING
, "Failed to set IPv6 mtu to %d "
993 "on interface '%s'\n", mtu
, iface
->name
);
997 assignment
->enabled
= true;
1001 static bool interface_prefix_assign(struct list_head
*list
,
1002 struct device_prefix_assignment
*assign
)
1004 int32_t current
= 0, asize
= (1 << (64 - assign
->length
)) - 1;
1005 struct device_prefix_assignment
*c
;
1006 list_for_each_entry(c
, list
, head
) {
1007 if (assign
->assigned
!= -1) {
1008 if (assign
->assigned
>= current
&& assign
->assigned
+ asize
< c
->assigned
) {
1009 list_add_tail(&assign
->head
, &c
->head
);
1012 } else if (assign
->assigned
== -1) {
1013 current
= (current
+ asize
) & (~asize
);
1014 if (current
+ asize
< c
->assigned
) {
1015 assign
->assigned
= current
;
1016 list_add_tail(&assign
->head
, &c
->head
);
1020 current
= (c
->assigned
+ (1 << (64 - c
->length
)));
1026 * Sorting of assignment entries:
1027 * Primary on assignment length: smallest assignment first
1028 * Secondary on assignment weight: highest weight first
1029 * Finally alphabetical order of interface names
1031 static int prefix_assignment_cmp(const void *k1
, const void *k2
, void *ptr
)
1033 const struct device_prefix_assignment
*a1
= k1
, *a2
= k2
;
1035 if (a1
->length
!= a2
->length
)
1036 return a1
->length
- a2
->length
;
1038 if (a1
->weight
!= a2
->weight
)
1039 return a2
->weight
- a1
->weight
;
1041 return strcmp(a1
->name
, a2
->name
);
1044 static void interface_update_prefix_assignments(struct device_prefix
*prefix
, bool setup
)
1046 struct device_prefix_assignment
*c
;
1047 struct interface
*iface
;
1049 /* Delete all assignments */
1050 while (!list_empty(&prefix
->assignments
)) {
1051 c
= list_first_entry(&prefix
->assignments
,
1052 struct device_prefix_assignment
, head
);
1053 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1054 interface_set_prefix_address(c
, prefix
, iface
, false);
1062 /* End-of-assignment sentinel */
1063 c
= malloc(sizeof(*c
) + 1);
1067 c
->assigned
= 1 << (64 - prefix
->length
);
1070 c
->addr
= in6addr_any
;
1071 list_add(&c
->head
, &prefix
->assignments
);
1073 /* Excluded prefix */
1074 if (prefix
->excl_length
> 0) {
1075 const char name
[] = "!excluded";
1076 c
= malloc(sizeof(*c
) + sizeof(name
));
1078 c
->assigned
= ntohl(prefix
->excl_addr
.s6_addr32
[1]) &
1079 ((1 << (64 - prefix
->length
)) - 1);
1080 c
->length
= prefix
->excl_length
;
1081 c
->addr
= in6addr_any
;
1082 memcpy(c
->name
, name
, sizeof(name
));
1083 list_add(&c
->head
, &prefix
->assignments
);
1087 bool assigned_any
= false;
1089 struct avl_node node
;
1091 struct avl_tree assign_later
;
1093 avl_init(&assign_later
, prefix_assignment_cmp
, false, NULL
);
1095 vlist_for_each_element(&interfaces
, iface
, node
) {
1096 if (iface
->assignment_length
< 48 ||
1097 iface
->assignment_length
> 64)
1100 /* Test whether there is a matching class */
1101 if (!list_empty(&iface
->assignment_classes
)) {
1104 struct interface_assignment_class
*c
;
1105 list_for_each_entry(c
, &iface
->assignment_classes
, head
) {
1106 if (!strcmp(c
->name
, prefix
->pclass
)) {
1116 size_t namelen
= strlen(iface
->name
) + 1;
1117 c
= malloc(sizeof(*c
) + namelen
);
1121 c
->length
= iface
->assignment_length
;
1122 c
->assigned
= iface
->assignment_hint
;
1123 c
->weight
= iface
->assignment_weight
;
1124 c
->addr
= in6addr_any
;
1126 memcpy(c
->name
, iface
->name
, namelen
);
1128 /* First process all custom assignments, put all others in later-list */
1129 if (c
->assigned
== -1 || !interface_prefix_assign(&prefix
->assignments
, c
)) {
1130 if (c
->assigned
!= -1) {
1132 netifd_log_message(L_WARNING
, "Failed to assign requested subprefix "
1133 "of size %hhu for %s, trying other\n", c
->length
, c
->name
);
1136 entry
= calloc(1, sizeof(*entry
));
1142 entry
->node
.key
= c
;
1143 avl_insert(&assign_later
, &entry
->node
);
1146 if (c
->assigned
!= -1)
1147 assigned_any
= true;
1150 /* Then try to assign all other + failed custom assignments */
1151 avl_for_each_element_safe(&assign_later
, entry
, node
, n_entry
) {
1152 bool assigned
= false;
1154 c
= (struct device_prefix_assignment
*)entry
->node
.key
;
1155 avl_delete(&assign_later
, &entry
->node
);
1158 assigned
= interface_prefix_assign(&prefix
->assignments
, c
);
1159 } while (!assigned
&& ++c
->length
<= 64);
1162 netifd_log_message(L_WARNING
, "Failed to assign subprefix "
1163 "of size %hhu for %s\n", c
->length
, c
->name
);
1166 assigned_any
= true;
1171 list_for_each_entry(c
, &prefix
->assignments
, head
)
1172 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1173 interface_set_prefix_address(c
, prefix
, iface
, true);
1176 netifd_log_message(L_WARNING
, "You have delegated IPv6-prefixes but haven't assigned them "
1177 "to any interface. Did you forget to set option ip6assign on your lan-interfaces?");
1181 void interface_refresh_assignments(bool hint
)
1183 static bool refresh
= false;
1184 if (!hint
&& refresh
) {
1185 struct device_prefix
*p
;
1186 list_for_each_entry(p
, &prefixes
, head
)
1187 interface_update_prefix_assignments(p
, true);
1192 void interface_update_prefix_delegation(struct interface_ip_settings
*ip
)
1194 struct device_prefix
*prefix
;
1196 vlist_for_each_element(&ip
->prefix
, prefix
, node
) {
1197 interface_update_prefix_assignments(prefix
, !ip
->no_delegation
);
1199 if (ip
->no_delegation
) {
1200 if (prefix
->head
.next
)
1201 list_del(&prefix
->head
);
1203 list_add(&prefix
->head
, &prefixes
);
1208 interface_update_prefix(struct vlist_tree
*tree
,
1209 struct vlist_node
*node_new
,
1210 struct vlist_node
*node_old
)
1212 struct device_prefix
*prefix_old
, *prefix_new
;
1213 prefix_old
= container_of(node_old
, struct device_prefix
, node
);
1214 prefix_new
= container_of(node_new
, struct device_prefix
, node
);
1216 struct interface_ip_settings
*ip
= container_of(tree
, struct interface_ip_settings
, prefix
);
1217 if (tree
&& (!node_new
|| !node_old
))
1218 ip
->iface
->updated
|= IUF_PREFIX
;
1220 struct device_route route
;
1221 memset(&route
, 0, sizeof(route
));
1222 route
.flags
= DEVADDR_INET6
;
1223 route
.metric
= INT32_MAX
;
1224 route
.mask
= (node_new
) ? prefix_new
->length
: prefix_old
->length
;
1225 route
.addr
.in6
= (node_new
) ? prefix_new
->addr
: prefix_old
->addr
;
1228 struct device_prefix_assignment
*c
;
1229 struct interface
*iface
;
1231 if (node_old
&& node_new
) {
1232 /* Move assignments and refresh addresses to update valid times */
1233 list_splice(&prefix_old
->assignments
, &prefix_new
->assignments
);
1235 list_for_each_entry(c
, &prefix_new
->assignments
, head
)
1236 if ((iface
= vlist_find(&interfaces
, c
->name
, iface
, node
)))
1237 interface_set_prefix_address(c
, prefix_new
, iface
, true);
1239 if (prefix_new
->preferred_until
!= prefix_old
->preferred_until
||
1240 prefix_new
->valid_until
!= prefix_old
->valid_until
)
1241 ip
->iface
->updated
|= IUF_PREFIX
;
1242 } else if (node_new
) {
1243 /* Set null-route to avoid routing loops */
1244 system_add_route(NULL
, &route
);
1246 if (!prefix_new
->iface
|| !prefix_new
->iface
->proto_ip
.no_delegation
)
1247 interface_update_prefix_assignments(prefix_new
, true);
1248 } else if (node_old
) {
1249 /* Remove null-route */
1250 interface_update_prefix_assignments(prefix_old
, false);
1251 system_del_route(NULL
, &route
);
1255 if (prefix_old
->head
.next
)
1256 list_del(&prefix_old
->head
);
1260 if (node_new
&& (!prefix_new
->iface
|| !prefix_new
->iface
->proto_ip
.no_delegation
))
1261 list_add(&prefix_new
->head
, &prefixes
);
1265 struct device_prefix
*
1266 interface_ip_add_device_prefix(struct interface
*iface
, struct in6_addr
*addr
,
1267 uint8_t length
, time_t valid_until
, time_t preferred_until
,
1268 struct in6_addr
*excl_addr
, uint8_t excl_length
, const char *pclass
)
1271 pclass
= (iface
) ? iface
->name
: "local";
1273 struct device_prefix
*prefix
= calloc(1, sizeof(*prefix
) + strlen(pclass
) + 1);
1277 prefix
->length
= length
;
1278 prefix
->addr
= *addr
;
1279 prefix
->preferred_until
= preferred_until
;
1280 prefix
->valid_until
= valid_until
;
1281 prefix
->iface
= iface
;
1282 INIT_LIST_HEAD(&prefix
->assignments
);
1285 prefix
->excl_addr
= *excl_addr
;
1286 prefix
->excl_length
= excl_length
;
1289 strcpy(prefix
->pclass
, pclass
);
1292 vlist_add(&iface
->proto_ip
.prefix
, &prefix
->node
, &prefix
->addr
);
1294 interface_update_prefix(NULL
, &prefix
->node
, NULL
);
1300 interface_ip_set_ula_prefix(const char *prefix
)
1302 char buf
[INET6_ADDRSTRLEN
+ 4] = {0}, *saveptr
;
1304 strncpy(buf
, prefix
, sizeof(buf
) - 1);
1305 char *prefixaddr
= strtok_r(buf
, "/", &saveptr
);
1307 struct in6_addr addr
;
1308 if (!prefixaddr
|| inet_pton(AF_INET6
, prefixaddr
, &addr
) < 1) {
1310 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
1317 char *prefixlen
= strtok_r(NULL
, ",", &saveptr
);
1318 if (!prefixlen
|| (length
= atoi(prefixlen
)) < 1 || length
> 64)
1321 if (!ula_prefix
|| !IN6_ARE_ADDR_EQUAL(&addr
, &ula_prefix
->addr
) ||
1322 ula_prefix
->length
!= length
) {
1324 interface_update_prefix(NULL
, NULL
, &ula_prefix
->node
);
1326 ula_prefix
= interface_ip_add_device_prefix(NULL
, &addr
, length
,
1327 0, 0, NULL
, 0, NULL
);
1332 interface_add_dns_server(struct interface_ip_settings
*ip
, const char *str
)
1334 struct dns_server
*s
;
1336 s
= calloc(1, sizeof(*s
));
1341 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
1345 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
1352 D(INTERFACE
, "Add IPv%c DNS server: %s\n",
1353 s
->af
== AF_INET6
? '6' : '4', str
);
1354 vlist_simple_add(&ip
->dns_servers
, &s
->node
);
1358 interface_add_dns_server_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
1360 struct blob_attr
*cur
;
1363 blobmsg_for_each_attr(cur
, list
, rem
) {
1364 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
1367 if (!blobmsg_check_attr(cur
, false))
1370 interface_add_dns_server(ip
, blobmsg_data(cur
));
1375 interface_add_dns_search_domain(struct interface_ip_settings
*ip
, const char *str
)
1377 struct dns_search_domain
*s
;
1378 int len
= strlen(str
);
1380 s
= calloc(1, sizeof(*s
) + len
+ 1);
1384 D(INTERFACE
, "Add DNS search domain: %s\n", str
);
1385 memcpy(s
->name
, str
, len
);
1386 vlist_simple_add(&ip
->dns_search
, &s
->node
);
1390 interface_add_dns_search_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
1392 struct blob_attr
*cur
;
1395 blobmsg_for_each_attr(cur
, list
, rem
) {
1396 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
1399 if (!blobmsg_check_attr(cur
, false))
1402 interface_add_dns_search_domain(ip
, blobmsg_data(cur
));
1407 write_resolv_conf_entries(FILE *f
, struct interface_ip_settings
*ip
, const char *dev
)
1409 struct dns_server
*s
;
1410 struct dns_search_domain
*d
;
1412 char buf
[INET6_ADDRSTRLEN
];
1414 vlist_simple_for_each_element(&ip
->dns_servers
, s
, node
) {
1415 str
= inet_ntop(s
->af
, &s
->addr
, buf
, sizeof(buf
));
1419 if (s
->af
== AF_INET6
&& IN6_IS_ADDR_LINKLOCAL(&s
->addr
.in6
))
1420 fprintf(f
, "nameserver %s%%%s\n", str
, dev
);
1422 fprintf(f
, "nameserver %s\n", str
);
1425 vlist_simple_for_each_element(&ip
->dns_search
, d
, node
) {
1426 fprintf(f
, "search %s\n", d
->name
);
1430 /* Sorting of interface resolver entries : */
1431 /* Primary on interface dns_metric : lowest metric first */
1432 /* Secondary on interface metric : lowest metric first */
1433 /* Finally alphabetical order of interface names */
1434 static int resolv_conf_iface_cmp(const void *k1
, const void *k2
, void *ptr
)
1436 const struct interface
*iface1
= k1
, *iface2
= k2
;
1438 if (iface1
->dns_metric
!= iface2
->dns_metric
)
1439 return iface1
->dns_metric
- iface2
->dns_metric
;
1441 if (iface1
->metric
!= iface2
->metric
)
1442 return iface1
->metric
- iface2
->metric
;
1444 return strcmp(iface1
->name
, iface2
->name
);
1448 __interface_write_dns_entries(FILE *f
, const char *jail
)
1450 struct interface
*iface
;
1452 struct avl_node node
;
1454 struct avl_tree resolv_conf_iface_entries
;
1456 avl_init(&resolv_conf_iface_entries
, resolv_conf_iface_cmp
, false, NULL
);
1458 vlist_for_each_element(&interfaces
, iface
, node
) {
1459 if (iface
->state
!= IFS_UP
)
1462 if (jail
&& (!iface
->jail
|| strcmp(jail
, iface
->jail
)))
1465 if (vlist_simple_empty(&iface
->proto_ip
.dns_search
) &&
1466 vlist_simple_empty(&iface
->proto_ip
.dns_servers
) &&
1467 vlist_simple_empty(&iface
->config_ip
.dns_search
) &&
1468 vlist_simple_empty(&iface
->config_ip
.dns_servers
))
1471 entry
= calloc(1, sizeof(*entry
));
1475 entry
->node
.key
= iface
;
1476 avl_insert(&resolv_conf_iface_entries
, &entry
->node
);
1479 avl_for_each_element(&resolv_conf_iface_entries
, entry
, node
) {
1480 iface
= (struct interface
*)entry
->node
.key
;
1481 struct device
*dev
= iface
->l3_dev
.dev
;
1483 fprintf(f
, "# Interface %s\n", iface
->name
);
1485 write_resolv_conf_entries(f
, &iface
->config_ip
, dev
->ifname
);
1487 if (!iface
->proto_ip
.no_dns
)
1488 write_resolv_conf_entries(f
, &iface
->proto_ip
, dev
->ifname
);
1491 avl_remove_all_elements(&resolv_conf_iface_entries
, entry
, node
, n_entry
)
1496 interface_write_resolv_conf(const char *jail
)
1498 size_t plen
= (jail
? strlen(jail
) + 1 : 0 ) + strlen(resolv_conf
) + 1;
1499 char *path
= alloca(plen
);
1500 char *dpath
= alloca(plen
);
1501 char *tmppath
= alloca(plen
+ 4);
1503 uint32_t crcold
, crcnew
;
1506 sprintf(path
, "/tmp/resolv.conf-%s.d/resolv.conf.auto", jail
);
1507 strcpy(dpath
, path
);
1508 dpath
= dirname(dpath
);
1511 strcpy(path
, resolv_conf
);
1514 sprintf(tmppath
, "%s.tmp", path
);
1516 f
= fopen(tmppath
, "w+");
1518 D(INTERFACE
, "Failed to open %s for writing\n", path
);
1522 __interface_write_dns_entries(f
, jail
);
1526 crcnew
= crc32_file(f
);
1529 crcold
= crcnew
+ 1;
1530 f
= fopen(path
, "r");
1532 crcold
= crc32_file(f
);
1536 if (crcold
== crcnew
) {
1538 } else if (rename(tmppath
, path
) < 0) {
1539 D(INTERFACE
, "Failed to replace %s\n", path
);
1544 void interface_ip_set_enabled(struct interface_ip_settings
*ip
, bool enabled
)
1546 struct device_addr
*addr
;
1547 struct device_route
*route
;
1548 struct device_neighbor
*neighbor
;
1550 struct interface
*iface
;
1552 ip
->enabled
= enabled
;
1554 dev
= iface
->l3_dev
.dev
;
1558 vlist_for_each_element(&ip
->addr
, addr
, node
) {
1559 bool v6
= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
) ? true : false;
1561 if (addr
->flags
& DEVADDR_EXTERNAL
)
1564 if (addr
->enabled
== enabled
)
1568 system_add_address(dev
, addr
);
1570 addr
->policy_table
= (v6
) ? iface
->ip6table
: iface
->ip4table
;
1571 if (iface
->metric
|| addr
->policy_table
)
1572 interface_handle_subnet_route(iface
, addr
, true);
1574 if (addr
->policy_table
)
1575 interface_add_addr_rules(addr
, true);
1577 interface_handle_subnet_route(iface
, addr
, false);
1578 system_del_address(dev
, addr
);
1580 if (addr
->policy_table
)
1581 interface_add_addr_rules(addr
, false);
1583 addr
->enabled
= enabled
;
1586 vlist_for_each_element(&ip
->route
, route
, node
) {
1587 bool _enabled
= enabled
;
1589 if (route
->flags
& DEVADDR_EXTERNAL
)
1592 if (!enable_route(ip
, route
))
1594 if (route
->enabled
== _enabled
)
1598 interface_set_route_info(ip
->iface
, route
);
1600 if (system_add_route(dev
, route
))
1601 route
->failed
= true;
1603 system_del_route(dev
, route
);
1604 route
->enabled
= _enabled
;
1607 vlist_for_each_element(&ip
->neighbor
, neighbor
, node
) {
1608 if (neighbor
->enabled
== enabled
)
1612 if(system_add_neighbor(dev
, neighbor
))
1613 neighbor
->failed
= true;
1615 system_del_neighbor(dev
, neighbor
);
1617 neighbor
->enabled
= enabled
;
1620 struct device_prefix
*c
;
1621 struct device_prefix_assignment
*a
;
1622 list_for_each_entry(c
, &prefixes
, head
)
1623 list_for_each_entry(a
, &c
->assignments
, head
)
1624 if (!strcmp(a
->name
, ip
->iface
->name
))
1625 interface_set_prefix_address(a
, c
, ip
->iface
, enabled
);
1627 if (ip
->iface
->policy_rules_set
!= enabled
&&
1628 ip
->iface
->l3_dev
.dev
) {
1629 set_ip_lo_policy(enabled
, true, ip
->iface
);
1630 set_ip_lo_policy(enabled
, false, ip
->iface
);
1632 set_ip_source_policy(enabled
, true, IPRULE_PRIORITY_REJECT
+ ip
->iface
->l3_dev
.dev
->ifindex
,
1633 NULL
, 0, 0, ip
->iface
, "failed_policy", true);
1634 ip
->iface
->policy_rules_set
= enabled
;
1639 interface_ip_update_start(struct interface_ip_settings
*ip
)
1641 if (ip
!= &ip
->iface
->config_ip
) {
1642 vlist_simple_update(&ip
->dns_servers
);
1643 vlist_simple_update(&ip
->dns_search
);
1645 vlist_update(&ip
->route
);
1646 vlist_update(&ip
->addr
);
1647 vlist_update(&ip
->prefix
);
1648 vlist_update(&ip
->neighbor
);
1652 interface_ip_update_complete(struct interface_ip_settings
*ip
)
1654 vlist_simple_flush(&ip
->dns_servers
);
1655 vlist_simple_flush(&ip
->dns_search
);
1656 vlist_flush(&ip
->route
);
1657 vlist_flush(&ip
->addr
);
1658 vlist_flush(&ip
->prefix
);
1659 vlist_flush(&ip
->neighbor
);
1660 interface_write_resolv_conf(ip
->iface
->jail
);
1664 interface_ip_flush(struct interface_ip_settings
*ip
)
1666 if (ip
== &ip
->iface
->proto_ip
)
1667 vlist_flush_all(&ip
->iface
->host_routes
);
1668 vlist_simple_flush_all(&ip
->dns_servers
);
1669 vlist_simple_flush_all(&ip
->dns_search
);
1670 vlist_flush_all(&ip
->route
);
1671 vlist_flush_all(&ip
->addr
);
1672 vlist_flush_all(&ip
->neighbor
);
1673 vlist_flush_all(&ip
->prefix
);
1677 __interface_ip_init(struct interface_ip_settings
*ip
, struct interface
*iface
)
1681 vlist_simple_init(&ip
->dns_search
, struct dns_search_domain
, node
);
1682 vlist_simple_init(&ip
->dns_servers
, struct dns_server
, node
);
1683 vlist_init(&ip
->route
, route_cmp
, interface_update_proto_route
);
1684 vlist_init(&ip
->neighbor
, neighbor_cmp
, interface_update_proto_neighbor
);
1685 vlist_init(&ip
->addr
, addr_cmp
, interface_update_proto_addr
);
1686 vlist_init(&ip
->prefix
, prefix_cmp
, interface_update_prefix
);
1690 interface_ip_init(struct interface
*iface
)
1692 __interface_ip_init(&iface
->proto_ip
, iface
);
1693 __interface_ip_init(&iface
->config_ip
, iface
);
1694 vlist_init(&iface
->host_routes
, route_cmp
, interface_update_host_route
);
1698 interface_ip_valid_until_handler(struct uloop_timeout
*t
)
1700 time_t now
= system_get_rtime();
1701 struct interface
*iface
;
1702 vlist_for_each_element(&interfaces
, iface
, node
) {
1703 if (iface
->state
!= IFS_UP
)
1706 struct device_addr
*addr
, *addrp
;
1707 struct device_route
*route
, *routep
;
1708 struct device_prefix
*pref
, *prefp
;
1710 vlist_for_each_element_safe(&iface
->proto_ip
.addr
, addr
, node
, addrp
)
1711 if (addr
->valid_until
&& addr
->valid_until
< now
)
1712 vlist_delete(&iface
->proto_ip
.addr
, &addr
->node
);
1714 vlist_for_each_element_safe(&iface
->proto_ip
.route
, route
, node
, routep
)
1715 if (route
->valid_until
&& route
->valid_until
< now
)
1716 vlist_delete(&iface
->proto_ip
.route
, &route
->node
);
1718 vlist_for_each_element_safe(&iface
->proto_ip
.prefix
, pref
, node
, prefp
)
1719 if (pref
->valid_until
&& pref
->valid_until
< now
)
1720 vlist_delete(&iface
->proto_ip
.prefix
, &pref
->node
);
1724 uloop_timeout_set(t
, 1000);
1728 interface_ip_init_worker(void)
1730 valid_until_timeout
.cb
= interface_ip_valid_until_handler
;
1731 uloop_timeout_set(&valid_until_timeout
, 1000);