10 #include "interface.h"
11 #include "interface-ip.h"
26 static const struct blobmsg_policy route_attr
[__ROUTE_MAX
] = {
27 [ROUTE_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
28 [ROUTE_TARGET
] = { .name
= "target", .type
= BLOBMSG_TYPE_STRING
},
29 [ROUTE_MASK
] = { .name
= "netmask", .type
= BLOBMSG_TYPE_STRING
},
30 [ROUTE_GATEWAY
] = { .name
= "gateway", .type
= BLOBMSG_TYPE_STRING
},
31 [ROUTE_METRIC
] = { .name
= "metric", .type
= BLOBMSG_TYPE_INT32
},
32 [ROUTE_MTU
] = { .name
= "mtu", .type
= BLOBMSG_TYPE_INT32
},
35 const struct config_param_list route_attr_list
= {
36 .n_params
= __ROUTE_MAX
,
41 match_if_addr(union if_addr
*a1
, union if_addr
*a2
, int mask
)
44 int m_bytes
= (mask
+ 7) / 8;
45 uint8_t m_clear
= (1 << (m_bytes
* 8 - mask
)) - 1;
50 memcpy(p1
, a1
, m_bytes
);
51 memcpy(p2
, a2
, m_bytes
);
53 p1
[m_bytes
- 1] &= ~m_clear
;
54 p2
[m_bytes
- 1] &= ~m_clear
;
56 return !memcmp(p1
, p2
, m_bytes
);
60 __find_ip_addr_target(struct interface_ip_settings
*ip
, union if_addr
*a
, bool v6
)
62 struct device_addr
*addr
;
64 vlist_for_each_element(&ip
->addr
, addr
, node
) {
68 if (v6
!= ((addr
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
71 if (!match_if_addr(&addr
->addr
, a
, addr
->mask
))
81 __find_ip_route_target(struct interface_ip_settings
*ip
, union if_addr
*a
,
82 bool v6
, struct device_route
**res
)
84 struct device_route
*route
;
86 vlist_for_each_element(&ip
->route
, route
, node
) {
90 if (v6
!= ((route
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET6
))
93 if (!match_if_addr(&route
->addr
, a
, route
->mask
))
96 if (!*res
|| route
->mask
< (*res
)->mask
)
102 interface_ip_find_addr_target(struct interface
*iface
, union if_addr
*a
, bool v6
)
104 return __find_ip_addr_target(&iface
->proto_ip
, a
, v6
) ||
105 __find_ip_addr_target(&iface
->config_ip
, a
, v6
);
109 interface_ip_find_route_target(struct interface
*iface
, union if_addr
*a
,
110 bool v6
, struct device_route
**route
)
112 __find_ip_route_target(&iface
->proto_ip
, a
, v6
, route
);
113 __find_ip_route_target(&iface
->config_ip
, a
, v6
, route
);
117 interface_ip_add_target_route(union if_addr
*addr
, bool v6
)
119 struct interface
*iface
;
120 struct device_route
*route
, *r_next
= NULL
;
122 route
= calloc(1, sizeof(*route
));
126 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
127 route
->mask
= v6
? 128 : 32;
128 memcpy(&route
->addr
, addr
, v6
? sizeof(addr
->in6
) : sizeof(addr
->in
));
130 vlist_for_each_element(&interfaces
, iface
, node
) {
131 /* look for locally addressable target first */
132 if (interface_ip_find_addr_target(iface
, addr
, v6
))
135 /* do not stop at the first route, let the lookup compare
136 * masks to find the best match */
137 interface_ip_find_route_target(iface
, addr
, v6
, &r_next
);
143 iface
= r_next
->iface
;
144 memcpy(&route
->nexthop
, &r_next
->nexthop
, sizeof(route
->nexthop
));
145 route
->mtu
= r_next
->mtu
;
146 route
->metric
= r_next
->metric
;
149 route
->iface
= iface
;
150 vlist_add(&iface
->host_routes
, &route
->node
, &route
->flags
);
155 interface_ip_add_route(struct interface
*iface
, struct blob_attr
*attr
, bool v6
)
157 struct interface_ip_settings
*ip
;
158 struct blob_attr
*tb
[__ROUTE_MAX
], *cur
;
159 struct device_route
*route
;
160 int af
= v6
? AF_INET6
: AF_INET
;
162 blobmsg_parse(route_attr
, __ROUTE_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
165 if ((cur
= tb
[ROUTE_INTERFACE
]) == NULL
)
168 iface
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
172 ip
= &iface
->config_ip
;
174 ip
= &iface
->proto_ip
;
177 route
= calloc(1, sizeof(*route
));
181 route
->flags
= v6
? DEVADDR_INET6
: DEVADDR_INET4
;
182 route
->mask
= v6
? 128 : 32;
183 if ((cur
= tb
[ROUTE_MASK
]) != NULL
) {
184 route
->mask
= parse_netmask_string(blobmsg_data(cur
), v6
);
185 if (route
->mask
> (v6
? 128 : 32))
189 if ((cur
= tb
[ROUTE_TARGET
]) != NULL
) {
190 if (!inet_pton(af
, blobmsg_data(cur
), &route
->addr
)) {
191 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur
));
196 if ((cur
= tb
[ROUTE_GATEWAY
]) != NULL
) {
197 if (!inet_pton(af
, blobmsg_data(cur
), &route
->nexthop
)) {
198 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur
));
203 if ((cur
= tb
[ROUTE_METRIC
]) != NULL
) {
204 route
->metric
= blobmsg_get_u32(cur
);
205 route
->flags
|= DEVROUTE_METRIC
;
208 if ((cur
= tb
[ROUTE_MTU
]) != NULL
)
209 route
->mtu
= blobmsg_get_u32(cur
);
211 vlist_add(&ip
->route
, &route
->node
, &route
->flags
);
219 addr_cmp(const void *k1
, const void *k2
, void *ptr
)
221 return memcmp(k1
, k2
, sizeof(struct device_addr
) -
222 offsetof(struct device_addr
, flags
));
226 route_cmp(const void *k1
, const void *k2
, void *ptr
)
228 return memcmp(k1
, k2
, sizeof(struct device_route
) -
229 offsetof(struct device_route
, flags
));
233 interface_update_proto_addr(struct vlist_tree
*tree
,
234 struct vlist_node
*node_new
,
235 struct vlist_node
*node_old
)
237 struct interface_ip_settings
*ip
;
238 struct interface
*iface
;
240 struct device_addr
*a_new
= NULL
, *a_old
= NULL
;
243 ip
= container_of(tree
, struct interface_ip_settings
, addr
);
245 dev
= iface
->l3_dev
.dev
;
248 a_new
= container_of(node_new
, struct device_addr
, node
);
250 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
&&
254 uint32_t *a
= (uint32_t *) &a_new
->addr
;
256 mask
>>= a_new
->mask
;
257 a_new
->broadcast
= *a
| mask
;
262 a_old
= container_of(node_old
, struct device_addr
, node
);
264 if (a_new
&& a_old
) {
267 if (a_old
->flags
!= a_new
->flags
)
270 if ((a_new
->flags
& DEVADDR_FAMILY
) == DEVADDR_INET4
&&
271 a_new
->broadcast
!= a_old
->broadcast
)
276 if (!(a_old
->flags
& DEVADDR_EXTERNAL
) && a_old
->enabled
&& !keep
)
277 system_del_address(dev
, a_old
);
282 if (!(a_new
->flags
& DEVADDR_EXTERNAL
) && !keep
)
283 system_add_address(dev
, a_new
);
284 a_new
->enabled
= true;
289 enable_route(struct interface_ip_settings
*ip
, struct device_route
*route
)
291 if (ip
->no_defaultroute
&& !route
->mask
)
298 interface_update_proto_route(struct vlist_tree
*tree
,
299 struct vlist_node
*node_new
,
300 struct vlist_node
*node_old
)
302 struct interface_ip_settings
*ip
;
303 struct interface
*iface
;
305 struct device_route
*route_old
, *route_new
;
308 ip
= container_of(tree
, struct interface_ip_settings
, route
);
310 dev
= iface
->l3_dev
.dev
;
312 route_old
= container_of(node_old
, struct device_route
, node
);
313 route_new
= container_of(node_new
, struct device_route
, node
);
315 if (node_old
&& node_new
)
316 keep
= !memcmp(&route_old
->nexthop
, &route_new
->nexthop
, sizeof(route_old
->nexthop
));
319 if (!(route_old
->flags
& DEVADDR_EXTERNAL
) && route_old
->enabled
&& !keep
)
320 system_del_route(dev
, route_old
);
325 bool _enabled
= enable_route(ip
, route_new
);
327 if (!(route_new
->flags
& DEVADDR_EXTERNAL
) && !keep
&& _enabled
)
328 system_add_route(dev
, route_new
);
330 route_new
->iface
= iface
;
331 route_new
->enabled
= _enabled
;
336 interface_update_host_route(struct vlist_tree
*tree
,
337 struct vlist_node
*node_new
,
338 struct vlist_node
*node_old
)
340 struct interface
*iface
;
342 struct device_route
*route_old
, *route_new
;
344 iface
= container_of(tree
, struct interface
, host_routes
);
345 dev
= iface
->l3_dev
.dev
;
347 route_old
= container_of(node_old
, struct device_route
, node
);
348 route_new
= container_of(node_new
, struct device_route
, node
);
351 system_del_route(dev
, route_old
);
356 system_add_route(dev
, route_new
);
360 interface_add_dns_server(struct interface_ip_settings
*ip
, const char *str
)
362 struct dns_server
*s
;
364 s
= calloc(1, sizeof(*s
));
366 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
370 if (inet_pton(s
->af
, str
, &s
->addr
.in
))
377 D(INTERFACE
, "Add IPv%c DNS server: %s\n",
378 s
->af
== AF_INET6
? '6' : '4', str
);
379 vlist_simple_add(&ip
->dns_servers
, &s
->node
);
383 interface_add_dns_server_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
385 struct blob_attr
*cur
;
388 blobmsg_for_each_attr(cur
, list
, rem
) {
389 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
392 if (!blobmsg_check_attr(cur
, NULL
))
395 interface_add_dns_server(ip
, blobmsg_data(cur
));
400 interface_add_dns_search_domain(struct interface_ip_settings
*ip
, const char *str
)
402 struct dns_search_domain
*s
;
403 int len
= strlen(str
);
405 s
= calloc(1, sizeof(*s
) + len
+ 1);
409 D(INTERFACE
, "Add DNS search domain: %s\n", str
);
410 memcpy(s
->name
, str
, len
);
411 vlist_simple_add(&ip
->dns_search
, &s
->node
);
415 interface_add_dns_search_list(struct interface_ip_settings
*ip
, struct blob_attr
*list
)
417 struct blob_attr
*cur
;
420 blobmsg_for_each_attr(cur
, list
, rem
) {
421 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
424 if (!blobmsg_check_attr(cur
, NULL
))
427 interface_add_dns_search_domain(ip
, blobmsg_data(cur
));
432 write_resolv_conf_entries(FILE *f
, struct interface_ip_settings
*ip
)
434 struct dns_server
*s
;
435 struct dns_search_domain
*d
;
439 vlist_simple_for_each_element(&ip
->dns_servers
, s
, node
) {
440 str
= inet_ntop(s
->af
, &s
->addr
, buf
, sizeof(buf
));
444 fprintf(f
, "nameserver %s\n", str
);
447 vlist_simple_for_each_element(&ip
->dns_search
, d
, node
) {
448 fprintf(f
, "search %s\n", d
->name
);
453 interface_write_resolv_conf(void)
455 struct interface
*iface
;
456 char *path
= alloca(strlen(resolv_conf
) + 5);
459 sprintf(path
, "%s.tmp", resolv_conf
);
461 f
= fopen(path
, "w");
463 D(INTERFACE
, "Failed to open %s for writing\n", path
);
467 vlist_for_each_element(&interfaces
, iface
, node
) {
468 if (iface
->state
!= IFS_UP
)
471 if (vlist_simple_empty(&iface
->proto_ip
.dns_search
) &&
472 vlist_simple_empty(&iface
->proto_ip
.dns_servers
) &&
473 vlist_simple_empty(&iface
->config_ip
.dns_search
) &&
474 vlist_simple_empty(&iface
->config_ip
.dns_servers
))
477 fprintf(f
, "# Interface %s\n", iface
->name
);
478 write_resolv_conf_entries(f
, &iface
->config_ip
);
479 write_resolv_conf_entries(f
, &iface
->proto_ip
);
482 if (rename(path
, resolv_conf
) < 0) {
483 D(INTERFACE
, "Failed to replace %s\n", resolv_conf
);
488 void interface_ip_set_enabled(struct interface_ip_settings
*ip
, bool enabled
)
490 struct device_addr
*addr
;
491 struct device_route
*route
;
494 ip
->enabled
= enabled
;
495 dev
= ip
->iface
->l3_dev
.dev
;
499 vlist_for_each_element(&ip
->addr
, addr
, node
) {
500 if (addr
->enabled
== enabled
)
504 system_add_address(dev
, addr
);
506 system_del_address(dev
, addr
);
507 addr
->enabled
= enabled
;
510 vlist_for_each_element(&ip
->route
, route
, node
) {
511 bool _enabled
= enabled
;
513 if (!enable_route(ip
, route
))
516 if (route
->enabled
== _enabled
)
520 if (!(route
->flags
& DEVROUTE_METRIC
))
521 route
->metric
= ip
->iface
->metric
;
523 system_add_route(dev
, route
);
525 system_del_route(dev
, route
);
526 route
->enabled
= _enabled
;
531 interface_ip_update_start(struct interface_ip_settings
*ip
)
533 vlist_simple_update(&ip
->dns_servers
);
534 vlist_simple_update(&ip
->dns_search
);
535 vlist_update(&ip
->route
);
536 vlist_update(&ip
->addr
);
540 interface_ip_update_complete(struct interface_ip_settings
*ip
)
542 vlist_simple_flush(&ip
->dns_servers
);
543 vlist_simple_flush(&ip
->dns_search
);
544 vlist_flush(&ip
->route
);
545 vlist_flush(&ip
->addr
);
549 interface_ip_flush(struct interface_ip_settings
*ip
)
551 if (ip
== &ip
->iface
->proto_ip
)
552 vlist_flush_all(&ip
->iface
->host_routes
);
553 vlist_simple_flush_all(&ip
->dns_servers
);
554 vlist_simple_flush_all(&ip
->dns_search
);
555 vlist_flush_all(&ip
->route
);
556 vlist_flush_all(&ip
->addr
);
560 __interface_ip_init(struct interface_ip_settings
*ip
, struct interface
*iface
)
564 vlist_simple_init(&ip
->dns_search
, struct dns_search_domain
, node
);
565 vlist_simple_init(&ip
->dns_servers
, struct dns_server
, node
);
566 vlist_init(&ip
->route
, route_cmp
, interface_update_proto_route
);
567 vlist_init(&ip
->addr
, addr_cmp
, interface_update_proto_addr
);
571 interface_ip_init(struct interface
*iface
)
573 __interface_ip_init(&iface
->proto_ip
, iface
);
574 __interface_ip_init(&iface
->config_ip
, iface
);
575 vlist_init(&iface
->host_routes
, route_cmp
, interface_update_host_route
);