2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
20 #include "interface.h"
21 #include "interface-ip.h"
27 struct vlist_tree interfaces
;
28 static LIST_HEAD(iface_all_users
);
34 IFACE_ATTR_DEFAULTROUTE
,
37 IFACE_ATTR_DNS_SEARCH
,
46 IFACE_ATTR_IP6IFACEID
,
47 IFACE_ATTR_FORCE_LINK
,
51 static const struct blobmsg_policy iface_attrs
[IFACE_ATTR_MAX
] = {
52 [IFACE_ATTR_PROTO
] = { .name
= "proto", .type
= BLOBMSG_TYPE_STRING
},
53 [IFACE_ATTR_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
54 [IFACE_ATTR_AUTO
] = { .name
= "auto", .type
= BLOBMSG_TYPE_BOOL
},
55 [IFACE_ATTR_DEFAULTROUTE
] = { .name
= "defaultroute", .type
= BLOBMSG_TYPE_BOOL
},
56 [IFACE_ATTR_PEERDNS
] = { .name
= "peerdns", .type
= BLOBMSG_TYPE_BOOL
},
57 [IFACE_ATTR_METRIC
] = { .name
= "metric", .type
= BLOBMSG_TYPE_INT32
},
58 [IFACE_ATTR_DNS
] = { .name
= "dns", .type
= BLOBMSG_TYPE_ARRAY
},
59 [IFACE_ATTR_DNS_SEARCH
] = { .name
= "dns_search", .type
= BLOBMSG_TYPE_ARRAY
},
60 [IFACE_ATTR_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
61 [IFACE_ATTR_IP6ASSIGN
] = { .name
= "ip6assign", .type
= BLOBMSG_TYPE_INT32
},
62 [IFACE_ATTR_IP6HINT
] = { .name
= "ip6hint", .type
= BLOBMSG_TYPE_STRING
},
63 [IFACE_ATTR_IP4TABLE
] = { .name
= "ip4table", .type
= BLOBMSG_TYPE_STRING
},
64 [IFACE_ATTR_IP6TABLE
] = { .name
= "ip6table", .type
= BLOBMSG_TYPE_STRING
},
65 [IFACE_ATTR_IP6CLASS
] = { .name
= "ip6class", .type
= BLOBMSG_TYPE_ARRAY
},
66 [IFACE_ATTR_DELEGATE
] = { .name
= "delegate", .type
= BLOBMSG_TYPE_BOOL
},
67 [IFACE_ATTR_IP6IFACEID
] = { .name
= "ip6ifaceid", .type
= BLOBMSG_TYPE_STRING
},
68 [IFACE_ATTR_FORCE_LINK
] = { .name
= "force_link", .type
= BLOBMSG_TYPE_BOOL
},
71 static const struct uci_blob_param_info iface_attr_info
[IFACE_ATTR_MAX
] = {
72 [IFACE_ATTR_DNS
] = { .type
= BLOBMSG_TYPE_STRING
},
73 [IFACE_ATTR_IP6CLASS
] = { .type
= BLOBMSG_TYPE_STRING
},
76 const struct uci_blob_param_list interface_attr_list
= {
77 .n_params
= IFACE_ATTR_MAX
,
78 .params
= iface_attrs
,
79 .info
= iface_attr_info
,
83 interface_error_flush(struct interface
*iface
)
85 struct interface_error
*error
, *tmp
;
87 list_for_each_entry_safe(error
, tmp
, &iface
->errors
, list
) {
88 list_del(&error
->list
);
94 interface_clear_errors(struct interface
*iface
)
96 /* don't flush the errors in case the configured protocol handler matches the
97 running protocol handler and is having the last error capability */
99 (iface
->proto
->handler
->flags
& PROTO_FLAG_LASTERROR
) &&
100 (iface
->proto
->handler
->name
== iface
->proto_handler
->name
)))
101 interface_error_flush(iface
);
104 void interface_add_error(struct interface
*iface
, const char *subsystem
,
105 const char *code
, const char **data
, int n_data
)
107 struct interface_error
*error
;
110 char *dest
, *d_subsys
, *d_code
;
112 /* if the configured protocol handler has the last error support capability,
113 errors should only be added if the running protocol handler matches the
116 (iface
->proto
->handler
->flags
& PROTO_FLAG_LASTERROR
) &&
117 (iface
->proto
->handler
->name
!= iface
->proto_handler
->name
))
121 len
= n_data
* sizeof(char *);
122 datalen
= alloca(len
);
123 for (i
= 0; i
< n_data
; i
++) {
124 datalen
[i
] = strlen(data
[i
]) + 1;
129 error
= calloc_a(sizeof(*error
) + sizeof(char *) + len
,
130 &d_subsys
, subsystem
? strlen(subsystem
) + 1 : 0,
131 &d_code
, code
? strlen(code
) + 1 : 0);
135 /* Only keep the last flagged error, prevent this list grows unlimitted in case the
136 protocol can't be established (e.g auth failure) */
137 if (iface
->proto_handler
->flags
& PROTO_FLAG_LASTERROR
)
138 interface_error_flush(iface
);
140 list_add_tail(&error
->list
, &iface
->errors
);
142 dest
= (char *) &error
->data
[n_data
+ 1];
143 for (i
= 0; i
< n_data
; i
++) {
144 error
->data
[i
] = dest
;
145 memcpy(dest
, data
[i
], datalen
[i
]);
148 error
->data
[n_data
++] = NULL
;
151 error
->subsystem
= strcpy(d_subsys
, subsystem
);
154 error
->code
= strcpy(d_code
, code
);
158 interface_data_del(struct interface
*iface
, struct interface_data
*data
)
160 avl_delete(&iface
->data
, &data
->node
);
165 interface_data_flush(struct interface
*iface
)
167 struct interface_data
*d
, *tmp
;
169 avl_for_each_element_safe(&iface
->data
, d
, node
, tmp
)
170 interface_data_del(iface
, d
);
174 interface_add_data(struct interface
*iface
, const struct blob_attr
*data
)
176 struct interface_data
*n
, *o
;
178 if (!blobmsg_check_attr(data
, true))
179 return UBUS_STATUS_INVALID_ARGUMENT
;
181 const char *name
= blobmsg_name(data
);
182 unsigned len
= blob_pad_len(data
);
184 o
= avl_find_element(&iface
->data
, name
, o
, node
);
186 if (blob_pad_len(o
->data
) == len
&& !memcmp(o
->data
, data
, len
))
189 interface_data_del(iface
, o
);
192 n
= calloc(1, sizeof(*n
) + len
);
193 memcpy(n
->data
, data
, len
);
194 n
->node
.key
= blobmsg_name(n
->data
);
195 avl_insert(&iface
->data
, &n
->node
);
197 iface
->updated
|= IUF_DATA
;
202 interface_event(struct interface
*iface
, enum interface_event ev
)
204 struct interface_user
*dep
, *tmp
;
205 struct device
*adev
= NULL
;
207 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
208 dep
->cb(dep
, iface
, ev
);
210 list_for_each_entry_safe(dep
, tmp
, &iface_all_users
, list
)
211 dep
->cb(dep
, iface
, ev
);
215 interface_error_flush(iface
);
216 adev
= iface
->l3_dev
.dev
;
219 alias_notify_device(iface
->name
, adev
);
227 interface_flush_state(struct interface
*iface
)
229 if (iface
->l3_dev
.dev
)
230 device_release(&iface
->l3_dev
);
231 interface_data_flush(iface
);
235 mark_interface_down(struct interface
*iface
)
237 enum interface_state state
= iface
->state
;
239 if (state
== IFS_DOWN
)
242 iface
->state
= IFS_DOWN
;
244 interface_event(iface
, IFEV_DOWN
);
245 interface_ip_set_enabled(&iface
->config_ip
, false);
246 interface_ip_flush(&iface
->proto_ip
);
247 interface_flush_state(iface
);
248 system_flush_routes();
252 __interface_set_down(struct interface
*iface
, bool force
)
254 enum interface_state state
= iface
->state
;
258 iface
->state
= IFS_TEARDOWN
;
260 interface_event(iface
, IFEV_DOWN
);
262 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, force
);
264 interface_flush_state(iface
);
267 vlist_delete(&interfaces
, &iface
->node
);
271 if (iface
->main_dev
.dev
)
272 device_release(&iface
->main_dev
);
280 __interface_set_up(struct interface
*iface
)
284 netifd_log_message(L_NOTICE
, "Interface '%s' is setting up now\n", iface
->name
);
286 iface
->state
= IFS_SETUP
;
287 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
289 mark_interface_down(iface
);
295 interface_check_state(struct interface
*iface
)
297 bool link_state
= iface
->link_state
|| iface
->force_link
;
299 switch (iface
->state
) {
302 if (!iface
->enabled
|| !link_state
) {
303 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
304 mark_interface_down(iface
);
308 if (!iface
->available
)
311 if (iface
->autostart
&& iface
->enabled
&& link_state
&& !config_init
)
312 __interface_set_up(iface
);
320 interface_set_enabled(struct interface
*iface
, bool new_state
)
322 if (iface
->enabled
== new_state
)
325 netifd_log_message(L_NOTICE
, "Interface '%s' is %s\n", iface
->name
, new_state
? "enabled" : "disabled");
326 iface
->enabled
= new_state
;
327 interface_check_state(iface
);
331 interface_set_link_state(struct interface
*iface
, bool new_state
)
333 if (iface
->link_state
== new_state
)
336 netifd_log_message(L_NOTICE
, "Interface '%s' has link connectivity %s\n", iface
->name
, new_state
? "" : "loss");
337 iface
->link_state
= new_state
;
338 interface_check_state(iface
);
342 interface_ext_cb(struct device_user
*dep
, enum device_event ev
)
344 if (ev
== DEV_EVENT_REMOVE
)
345 device_remove_user(dep
);
349 interface_cb(struct device_user
*dep
, enum device_event ev
)
351 struct interface
*iface
;
352 bool new_state
= false;
354 iface
= container_of(dep
, struct interface
, main_dev
);
358 case DEV_EVENT_REMOVE
:
359 interface_set_available(iface
, new_state
);
360 if (!new_state
&& dep
->dev
&& dep
->dev
->external
)
361 interface_set_main_dev(iface
, NULL
);
366 interface_set_enabled(iface
, new_state
);
368 case DEV_EVENT_LINK_UP
:
370 case DEV_EVENT_LINK_DOWN
:
371 interface_set_link_state(iface
, new_state
);
373 case DEV_EVENT_TOPO_CHANGE
:
374 interface_proto_event(iface
->proto
, PROTO_CMD_RENEW
, false);
382 interface_set_available(struct interface
*iface
, bool new_state
)
384 if (iface
->available
== new_state
)
387 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
388 iface
->available
= new_state
;
391 if (iface
->autostart
&& !config_init
)
392 interface_set_up(iface
);
394 __interface_set_down(iface
, true);
398 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
401 list_add(&dep
->list
, &iface_all_users
);
406 list_add(&dep
->list
, &iface
->users
);
407 if (iface
->state
== IFS_UP
)
408 dep
->cb(dep
, iface
, IFEV_UP
);
412 interface_remove_user(struct interface_user
*dep
)
414 list_del_init(&dep
->list
);
419 interface_add_assignment_classes(struct interface
*iface
, struct blob_attr
*list
)
421 struct blob_attr
*cur
;
424 blobmsg_for_each_attr(cur
, list
, rem
) {
425 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
428 if (!blobmsg_check_attr(cur
, NULL
))
431 struct interface_assignment_class
*c
= malloc(sizeof(*c
) + blobmsg_data_len(cur
));
432 memcpy(c
->name
, blobmsg_data(cur
), blobmsg_data_len(cur
));
433 list_add(&c
->head
, &iface
->assignment_classes
);
438 interface_clear_assignment_classes(struct interface
*iface
)
440 while (!list_empty(&iface
->assignment_classes
)) {
441 struct interface_assignment_class
*c
= list_first_entry(&iface
->assignment_classes
,
442 struct interface_assignment_class
, head
);
449 interface_merge_assignment_data(struct interface
*old
, struct interface
*new)
451 bool changed
= (old
->assignment_hint
!= new->assignment_hint
||
452 old
->assignment_length
!= new->assignment_length
||
453 old
->assignment_iface_id_selection
!= new->assignment_iface_id_selection
||
454 (old
->assignment_iface_id_selection
== IFID_FIXED
&&
455 memcmp(&old
->assignment_fixed_iface_id
, &new->assignment_fixed_iface_id
,
456 sizeof(old
->assignment_fixed_iface_id
))) ||
457 list_empty(&old
->assignment_classes
) != list_empty(&new->assignment_classes
));
459 struct interface_assignment_class
*c
;
460 list_for_each_entry(c
, &new->assignment_classes
, head
) {
461 // Compare list entries one-by-one to see if there was a change
462 if (list_empty(&old
->assignment_classes
)) // The new list is longer
468 struct interface_assignment_class
*c_old
= list_first_entry(&old
->assignment_classes
,
469 struct interface_assignment_class
, head
);
471 if (strcmp(c_old
->name
, c
->name
)) // An entry didn't match
474 list_del(&c_old
->head
);
478 // The old list was longer than the new one or the last entry didn't match
479 if (!list_empty(&old
->assignment_classes
)) {
480 interface_clear_assignment_classes(old
);
484 list_splice_init(&new->assignment_classes
, &old
->assignment_classes
);
487 old
->assignment_hint
= new->assignment_hint
;
488 old
->assignment_length
= new->assignment_length
;
489 old
->assignment_iface_id_selection
= new->assignment_iface_id_selection
;
490 old
->assignment_fixed_iface_id
= new->assignment_fixed_iface_id
;
491 interface_refresh_assignments(true);
496 interface_alias_cb(struct interface_user
*dep
, struct interface
*iface
, enum interface_event ev
)
498 struct interface
*alias
= container_of(dep
, struct interface
, parent_iface
);
499 struct device
*dev
= iface
->l3_dev
.dev
;
506 interface_set_main_dev(alias
, dev
);
507 interface_set_available(alias
, true);
510 interface_set_available(alias
, false);
511 interface_set_main_dev(alias
, NULL
);
514 interface_remove_user(dep
);
523 interface_claim_device(struct interface
*iface
)
525 struct interface
*parent
;
526 struct device
*dev
= NULL
;
528 if (iface
->parent_iface
.iface
)
529 interface_remove_user(&iface
->parent_iface
);
531 if (iface
->parent_ifname
) {
532 parent
= vlist_find(&interfaces
, iface
->parent_ifname
, parent
, node
);
533 iface
->parent_iface
.cb
= interface_alias_cb
;
534 interface_add_user(&iface
->parent_iface
, parent
);
535 } else if (iface
->ifname
&&
536 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
537 dev
= device_get(iface
->ifname
, true);
538 if (dev
&& dev
->default_config
&& iface
->device_config
)
539 device_apply_config(dev
, dev
->type
, iface
->config
);
541 dev
= iface
->ext_dev
.dev
;
545 interface_set_main_dev(iface
, dev
);
547 if (iface
->proto_handler
->flags
& PROTO_FLAG_INIT_AVAILABLE
)
548 interface_set_available(iface
, true);
552 interface_cleanup_state(struct interface
*iface
)
554 interface_set_available(iface
, false);
556 interface_flush_state(iface
);
557 interface_clear_errors(iface
);
558 interface_set_proto_state(iface
, NULL
);
560 interface_set_main_dev(iface
, NULL
);
561 interface_set_l3_dev(iface
, NULL
);
565 interface_cleanup(struct interface
*iface
)
567 struct interface_user
*dep
, *tmp
;
569 uloop_timeout_cancel(&iface
->remove_timer
);
570 device_remove_user(&iface
->ext_dev
);
572 if (iface
->parent_iface
.iface
)
573 interface_remove_user(&iface
->parent_iface
);
575 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
576 interface_remove_user(dep
);
578 interface_clear_assignment_classes(iface
);
579 interface_ip_flush(&iface
->config_ip
);
580 interface_cleanup_state(iface
);
584 interface_do_free(struct interface
*iface
)
586 interface_event(iface
, IFEV_FREE
);
587 interface_cleanup(iface
);
589 netifd_ubus_remove_interface(iface
);
590 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
595 interface_do_reload(struct interface
*iface
)
597 interface_event(iface
, IFEV_RELOAD
);
598 interface_cleanup_state(iface
);
599 proto_init_interface(iface
, iface
->config
);
600 interface_claim_device(iface
);
604 interface_handle_config_change(struct interface
*iface
)
606 enum interface_config_state state
= iface
->config_state
;
608 iface
->config_state
= IFC_NORMAL
;
613 interface_do_reload(iface
);
616 interface_do_free(iface
);
619 if (iface
->autostart
&& iface
->available
)
620 interface_set_up(iface
);
624 interface_proto_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
626 struct interface
*iface
= state
->iface
;
630 if (iface
->state
!= IFS_SETUP
) {
631 interface_event(iface
, IFEV_UPDATE
);
635 if (!iface
->l3_dev
.dev
)
636 interface_set_l3_dev(iface
, iface
->main_dev
.dev
);
638 interface_ip_set_enabled(&iface
->config_ip
, true);
639 system_flush_routes();
640 iface
->state
= IFS_UP
;
641 iface
->start_time
= system_get_rtime();
642 interface_event(iface
, IFEV_UP
);
643 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
646 if (iface
->state
== IFS_DOWN
)
649 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
650 mark_interface_down(iface
);
651 if (iface
->main_dev
.dev
)
652 device_release(&iface
->main_dev
);
653 if (iface
->l3_dev
.dev
)
654 device_remove_user(&iface
->l3_dev
);
655 interface_handle_config_change(iface
);
657 case IFPEV_LINK_LOST
:
658 if (iface
->state
!= IFS_UP
)
661 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
662 mark_interface_down(iface
);
663 iface
->state
= IFS_SETUP
;
669 interface_write_resolv_conf();
672 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
675 iface
->proto
->free(iface
->proto
);
678 iface
->state
= IFS_DOWN
;
679 iface
->proto
= state
;
683 state
->proto_event
= interface_proto_cb
;
684 state
->iface
= iface
;
688 interface_alloc(const char *name
, struct blob_attr
*config
)
690 struct interface
*iface
;
691 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
692 struct blob_attr
*cur
;
693 const char *proto_name
= NULL
;
695 bool force_link
= false;
697 iface
= calloc_a(sizeof(*iface
), &iface_name
, strlen(name
) + 1);
698 iface
->name
= strcpy(iface_name
, name
);
699 INIT_LIST_HEAD(&iface
->errors
);
700 INIT_LIST_HEAD(&iface
->users
);
701 INIT_LIST_HEAD(&iface
->hotplug_list
);
702 INIT_LIST_HEAD(&iface
->assignment_classes
);
703 interface_ip_init(iface
);
704 avl_init(&iface
->data
, avl_strcmp
, false, NULL
);
705 iface
->config_ip
.enabled
= false;
707 iface
->main_dev
.cb
= interface_cb
;
708 iface
->ext_dev
.cb
= interface_ext_cb
;
710 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
711 blob_data(config
), blob_len(config
));
713 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
714 proto_name
= blobmsg_data(cur
);
716 proto_attach_interface(iface
, proto_name
);
717 if (iface
->proto_handler
->flags
& PROTO_FLAG_FORCE_LINK_DEFAULT
)
720 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
721 iface
->force_link
= blobmsg_get_bool_default(tb
[IFACE_ATTR_FORCE_LINK
], force_link
);
722 iface
->proto_ip
.no_defaultroute
=
723 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
724 iface
->proto_ip
.no_dns
=
725 !blobmsg_get_bool_default(tb
[IFACE_ATTR_PEERDNS
], true);
727 if ((cur
= tb
[IFACE_ATTR_DNS
]))
728 interface_add_dns_server_list(&iface
->config_ip
, cur
);
730 if ((cur
= tb
[IFACE_ATTR_DNS_SEARCH
]))
731 interface_add_dns_search_list(&iface
->config_ip
, cur
);
733 if ((cur
= tb
[IFACE_ATTR_METRIC
]))
734 iface
->metric
= blobmsg_get_u32(cur
);
736 if ((cur
= tb
[IFACE_ATTR_IP6ASSIGN
]))
737 iface
->assignment_length
= blobmsg_get_u32(cur
);
740 iface
->assignment_iface_id_selection
= IFID_FIXED
;
741 iface
->assignment_fixed_iface_id
= in6addr_any
;
742 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
744 if ((cur
= tb
[IFACE_ATTR_IP6IFACEID
])) {
745 const char *ifaceid
= blobmsg_data(cur
);
746 if (!strcmp(ifaceid
, "random")) {
747 iface
->assignment_iface_id_selection
= IFID_RANDOM
;
749 else if (!strcmp(ifaceid
, "eui64")) {
750 iface
->assignment_iface_id_selection
= IFID_EUI64
;
753 /* we expect an IPv6 address with network id zero here -> fixed iface id
754 if we cannot parse -> revert to iface id 1 */
755 if (inet_pton(AF_INET6
,ifaceid
,&iface
->assignment_fixed_iface_id
) != 1 ||
756 iface
->assignment_fixed_iface_id
.s6_addr32
[0] != 0 ||
757 iface
->assignment_fixed_iface_id
.s6_addr32
[1] != 0) {
758 iface
->assignment_fixed_iface_id
= in6addr_any
;
759 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
760 netifd_log_message(L_WARNING
, "Failed to parse ip6ifaceid for interface '%s', \
761 falling back to iface id 1.\n", iface
->name
);
766 iface
->assignment_hint
= -1;
767 if ((cur
= tb
[IFACE_ATTR_IP6HINT
]))
768 iface
->assignment_hint
= strtol(blobmsg_get_string(cur
), NULL
, 16) &
769 ~((1 << (64 - iface
->assignment_length
)) - 1);
771 if ((cur
= tb
[IFACE_ATTR_IP6CLASS
]))
772 interface_add_assignment_classes(iface
, cur
);
775 if ((cur
= tb
[IFACE_ATTR_IP4TABLE
])) {
776 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip4table
))
777 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
780 if ((cur
= tb
[IFACE_ATTR_IP6TABLE
])) {
781 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip6table
))
782 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
785 iface
->proto_ip
.no_delegation
= !blobmsg_get_bool_default(tb
[IFACE_ATTR_DELEGATE
], true);
787 iface
->config_autostart
= iface
->autostart
;
791 void interface_set_dynamic(struct interface
*iface
)
793 iface
->dynamic
= true;
794 iface
->autostart
= true;
795 iface
->node
.version
= -1; // Don't delete on reload
798 static bool __interface_add(struct interface
*iface
, struct blob_attr
*config
, bool alias
)
800 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
801 struct blob_attr
*cur
;
803 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
804 blob_data(config
), blob_len(config
));
807 if ((cur
= tb
[IFACE_ATTR_INTERFACE
]))
808 iface
->parent_ifname
= blobmsg_data(cur
);
810 if (!iface
->parent_ifname
)
813 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
814 iface
->ifname
= blobmsg_data(cur
);
818 iface
->config
= config
;
819 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
824 interface_add(struct interface
*iface
, struct blob_attr
*config
)
826 __interface_add(iface
, config
, false);
830 interface_add_alias(struct interface
*iface
, struct blob_attr
*config
)
832 if (iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)
835 return __interface_add(iface
, config
, true);
839 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
841 bool enabled
= iface
->config_ip
.enabled
;
842 bool claimed
= iface
->l3_dev
.claimed
;
844 if (iface
->l3_dev
.dev
== dev
)
847 interface_ip_set_enabled(&iface
->config_ip
, false);
848 interface_ip_flush(&iface
->proto_ip
);
849 device_add_user(&iface
->l3_dev
, dev
);
853 if (device_claim(&iface
->l3_dev
) < 0)
856 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
861 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
863 bool claimed
= iface
->l3_dev
.claimed
;
865 if (iface
->main_dev
.dev
== dev
)
868 interface_set_available(iface
, false);
869 device_add_user(&iface
->main_dev
, dev
);
871 interface_set_link_state(iface
, false);
876 if (device_claim(&iface
->l3_dev
) < 0)
880 if (!iface
->l3_dev
.dev
)
881 interface_set_l3_dev(iface
, dev
);
885 interface_remove_link(struct interface
*iface
, struct device
*dev
)
887 struct device
*mdev
= iface
->main_dev
.dev
;
889 if (mdev
&& mdev
->hotplug_ops
)
890 return mdev
->hotplug_ops
->del(mdev
, dev
);
892 if (dev
== iface
->ext_dev
.dev
)
893 device_remove_user(&iface
->ext_dev
);
895 if (!iface
->main_dev
.hotplug
)
896 return UBUS_STATUS_INVALID_ARGUMENT
;
898 if (dev
!= iface
->main_dev
.dev
)
899 return UBUS_STATUS_INVALID_ARGUMENT
;
901 interface_set_main_dev(iface
, NULL
);
906 interface_add_link(struct interface
*iface
, struct device
*dev
, bool link_ext
)
908 struct device
*mdev
= iface
->main_dev
.dev
;
913 if (iface
->main_dev
.hotplug
)
914 device_remove_user(&iface
->main_dev
);
917 if (mdev
->hotplug_ops
)
918 return mdev
->hotplug_ops
->add(mdev
, dev
);
920 return UBUS_STATUS_NOT_SUPPORTED
;
924 device_add_user(&iface
->ext_dev
, dev
);
926 interface_set_main_dev(iface
, dev
);
927 iface
->main_dev
.hotplug
= true;
932 interface_handle_link(struct interface
*iface
, const char *name
, bool add
, bool link_ext
)
939 dev
= device_get(name
, add
? (link_ext
? 2 : 1) : 0);
941 ret
= UBUS_STATUS_NOT_FOUND
;
946 if (iface
->device_config
&& dev
->default_config
)
947 device_apply_config(dev
, dev
->type
, iface
->config
);
949 device_set_present(dev
, true);
951 ret
= interface_add_link(iface
, dev
, link_ext
);
953 ret
= interface_remove_link(iface
, dev
);
963 interface_set_up(struct interface
*iface
)
967 iface
->autostart
= true;
969 if (iface
->state
!= IFS_DOWN
)
972 interface_clear_errors(iface
);
973 if (!iface
->available
) {
974 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
978 if (iface
->main_dev
.dev
) {
979 ret
= device_claim(&iface
->main_dev
);
981 interface_check_state(iface
);
984 ret
= __interface_set_up(iface
);
990 interface_set_down(struct interface
*iface
)
993 vlist_for_each_element(&interfaces
, iface
, node
)
994 __interface_set_down(iface
, false);
996 iface
->autostart
= false;
997 __interface_set_down(iface
, false);
1004 interface_start_pending(void)
1006 struct interface
*iface
;
1008 vlist_for_each_element(&interfaces
, iface
, node
) {
1009 if (iface
->available
&& iface
->autostart
)
1010 interface_set_up(iface
);
1015 set_config_state(struct interface
*iface
, enum interface_config_state s
)
1017 iface
->config_state
= s
;
1018 if (iface
->state
== IFS_DOWN
)
1019 interface_handle_config_change(iface
);
1021 __interface_set_down(iface
, false);
1025 interface_update_start(struct interface
*iface
)
1028 interface_ip_update_start(&iface
->proto_ip
);
1032 interface_update_complete(struct interface
*iface
)
1034 interface_ip_update_complete(&iface
->proto_ip
);
1038 interface_replace_dns(struct interface_ip_settings
*new, struct interface_ip_settings
*old
)
1040 vlist_simple_replace(&new->dns_servers
, &old
->dns_servers
);
1041 vlist_simple_replace(&new->dns_search
, &old
->dns_search
);
1045 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
1047 struct blob_attr
*old_config
= if_old
->config
;
1048 bool reload
= false, reload_ip
= false;
1050 #define FIELD_CHANGED_STR(field) \
1051 ((!!if_old->field != !!if_new->field) || \
1053 strcmp(if_old->field, if_new->field) != 0))
1055 if (FIELD_CHANGED_STR(parent_ifname
)) {
1056 if (if_old
->parent_iface
.iface
)
1057 interface_remove_user(&if_old
->parent_iface
);
1061 if (FIELD_CHANGED_STR(ifname
) ||
1062 if_old
->proto_handler
!= if_new
->proto_handler
)
1065 if (!if_old
->proto_handler
->config_params
)
1066 D(INTERFACE
, "No config parameters for interface '%s'\n",
1068 else if (!uci_blob_check_equal(if_old
->config
, if_new
->config
,
1069 if_old
->proto_handler
->config_params
))
1072 #define UPDATE(field, __var) ({ \
1073 bool __changed = (if_old->field != if_new->field); \
1074 if_old->field = if_new->field; \
1075 __var |= __changed; \
1078 if_old
->config
= if_new
->config
;
1079 if (if_old
->config_autostart
!= if_new
->config_autostart
) {
1080 if (if_old
->config_autostart
)
1083 if_old
->autostart
= if_new
->config_autostart
;
1086 if_old
->device_config
= if_new
->device_config
;
1087 if_old
->config_autostart
= if_new
->config_autostart
;
1088 if_old
->ifname
= if_new
->ifname
;
1089 if_old
->parent_ifname
= if_new
->parent_ifname
;
1090 if_old
->proto_handler
= if_new
->proto_handler
;
1091 if_old
->force_link
= if_new
->force_link
;
1093 if_old
->proto_ip
.no_dns
= if_new
->proto_ip
.no_dns
;
1094 interface_replace_dns(&if_old
->config_ip
, &if_new
->config_ip
);
1096 UPDATE(metric
, reload_ip
);
1097 UPDATE(proto_ip
.no_defaultroute
, reload_ip
);
1098 UPDATE(ip4table
, reload_ip
);
1099 UPDATE(ip6table
, reload_ip
);
1100 interface_merge_assignment_data(if_old
, if_new
);
1105 D(INTERFACE
, "Reload interface '%s' because of config changes\n",
1107 interface_clear_errors(if_old
);
1108 set_config_state(if_old
, IFC_RELOAD
);
1113 bool config_ip_enabled
= if_old
->config_ip
.enabled
;
1114 bool proto_ip_enabled
= if_old
->proto_ip
.enabled
;
1116 interface_ip_set_enabled(&if_old
->config_ip
, false);
1117 interface_ip_set_enabled(&if_old
->proto_ip
, false);
1118 interface_ip_set_enabled(&if_old
->proto_ip
, proto_ip_enabled
);
1119 interface_ip_set_enabled(&if_old
->config_ip
, config_ip_enabled
);
1122 interface_write_resolv_conf();
1123 if (if_old
->main_dev
.dev
)
1124 interface_check_state(if_old
);
1127 if_new
->config
= NULL
;
1128 interface_cleanup(if_new
);
1134 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
1135 struct vlist_node
*node_old
)
1137 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
1138 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
1140 if (node_old
&& node_new
) {
1141 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
1142 interface_change_config(if_old
, if_new
);
1143 } else if (node_old
) {
1144 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
1145 set_config_state(if_old
, IFC_REMOVE
);
1146 } else if (node_new
) {
1147 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
1148 proto_init_interface(if_new
, if_new
->config
);
1149 interface_claim_device(if_new
);
1150 netifd_ubus_add_interface(if_new
);
1156 interface_init_list(void)
1158 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
1159 interfaces
.keep_old
= true;
1160 interfaces
.no_delete
= true;