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
,
38 IFACE_ATTR_DNS_METRIC
,
47 IFACE_ATTR_IP6IFACEID
,
48 IFACE_ATTR_FORCE_LINK
,
53 static const struct blobmsg_policy iface_attrs
[IFACE_ATTR_MAX
] = {
54 [IFACE_ATTR_PROTO
] = { .name
= "proto", .type
= BLOBMSG_TYPE_STRING
},
55 [IFACE_ATTR_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
56 [IFACE_ATTR_AUTO
] = { .name
= "auto", .type
= BLOBMSG_TYPE_BOOL
},
57 [IFACE_ATTR_DEFAULTROUTE
] = { .name
= "defaultroute", .type
= BLOBMSG_TYPE_BOOL
},
58 [IFACE_ATTR_PEERDNS
] = { .name
= "peerdns", .type
= BLOBMSG_TYPE_BOOL
},
59 [IFACE_ATTR_METRIC
] = { .name
= "metric", .type
= BLOBMSG_TYPE_INT32
},
60 [IFACE_ATTR_DNS
] = { .name
= "dns", .type
= BLOBMSG_TYPE_ARRAY
},
61 [IFACE_ATTR_DNS_SEARCH
] = { .name
= "dns_search", .type
= BLOBMSG_TYPE_ARRAY
},
62 [IFACE_ATTR_DNS_METRIC
] = { .name
= "dns_metric", .type
= BLOBMSG_TYPE_INT32
},
63 [IFACE_ATTR_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
64 [IFACE_ATTR_IP6ASSIGN
] = { .name
= "ip6assign", .type
= BLOBMSG_TYPE_INT32
},
65 [IFACE_ATTR_IP6HINT
] = { .name
= "ip6hint", .type
= BLOBMSG_TYPE_STRING
},
66 [IFACE_ATTR_IP4TABLE
] = { .name
= "ip4table", .type
= BLOBMSG_TYPE_STRING
},
67 [IFACE_ATTR_IP6TABLE
] = { .name
= "ip6table", .type
= BLOBMSG_TYPE_STRING
},
68 [IFACE_ATTR_IP6CLASS
] = { .name
= "ip6class", .type
= BLOBMSG_TYPE_ARRAY
},
69 [IFACE_ATTR_DELEGATE
] = { .name
= "delegate", .type
= BLOBMSG_TYPE_BOOL
},
70 [IFACE_ATTR_IP6IFACEID
] = { .name
= "ip6ifaceid", .type
= BLOBMSG_TYPE_STRING
},
71 [IFACE_ATTR_FORCE_LINK
] = { .name
= "force_link", .type
= BLOBMSG_TYPE_BOOL
},
72 [IFACE_ATTR_IP6WEIGHT
] = { .name
= "ip6weight", .type
= BLOBMSG_TYPE_INT32
},
75 const struct uci_blob_param_list interface_attr_list
= {
76 .n_params
= IFACE_ATTR_MAX
,
77 .params
= iface_attrs
,
81 interface_set_main_dev(struct interface
*iface
, struct device
*dev
);
83 interface_event(struct interface
*iface
, enum interface_event ev
);
86 interface_error_flush(struct interface
*iface
)
88 struct interface_error
*error
, *tmp
;
90 list_for_each_entry_safe(error
, tmp
, &iface
->errors
, list
) {
91 list_del(&error
->list
);
97 interface_clear_errors(struct interface
*iface
)
99 /* don't flush the errors in case the configured protocol handler matches the
100 running protocol handler and is having the last error capability */
101 if (!(iface
->proto
&&
102 (iface
->proto
->handler
->flags
& PROTO_FLAG_LASTERROR
) &&
103 (iface
->proto
->handler
->name
== iface
->proto_handler
->name
)))
104 interface_error_flush(iface
);
107 void interface_add_error(struct interface
*iface
, const char *subsystem
,
108 const char *code
, const char **data
, int n_data
)
110 struct interface_error
*error
;
113 char *dest
, *d_subsys
, *d_code
;
115 /* if the configured protocol handler has the last error support capability,
116 errors should only be added if the running protocol handler matches the
119 (iface
->proto
->handler
->flags
& PROTO_FLAG_LASTERROR
) &&
120 (iface
->proto
->handler
->name
!= iface
->proto_handler
->name
))
124 len
= n_data
* sizeof(char *);
125 datalen
= alloca(len
);
126 for (i
= 0; i
< n_data
; i
++) {
127 datalen
[i
] = strlen(data
[i
]) + 1;
132 error
= calloc_a(sizeof(*error
) + sizeof(char *) + len
,
133 &d_subsys
, subsystem
? strlen(subsystem
) + 1 : 0,
134 &d_code
, code
? strlen(code
) + 1 : 0);
138 /* Only keep the last flagged error, prevent this list grows unlimitted in case the
139 protocol can't be established (e.g auth failure) */
140 if (iface
->proto_handler
->flags
& PROTO_FLAG_LASTERROR
)
141 interface_error_flush(iface
);
143 list_add_tail(&error
->list
, &iface
->errors
);
145 dest
= (char *) &error
->data
[n_data
+ 1];
146 for (i
= 0; i
< n_data
; i
++) {
147 error
->data
[i
] = dest
;
148 memcpy(dest
, data
[i
], datalen
[i
]);
151 error
->data
[n_data
] = NULL
;
154 error
->subsystem
= strcpy(d_subsys
, subsystem
);
157 error
->code
= strcpy(d_code
, code
);
161 interface_data_del(struct interface
*iface
, struct interface_data
*data
)
163 avl_delete(&iface
->data
, &data
->node
);
168 interface_data_flush(struct interface
*iface
)
170 struct interface_data
*d
, *tmp
;
172 avl_for_each_element_safe(&iface
->data
, d
, node
, tmp
)
173 interface_data_del(iface
, d
);
177 interface_add_data(struct interface
*iface
, const struct blob_attr
*data
)
179 struct interface_data
*n
, *o
;
181 if (!blobmsg_check_attr(data
, true))
182 return UBUS_STATUS_INVALID_ARGUMENT
;
184 const char *name
= blobmsg_name(data
);
185 unsigned len
= blob_pad_len(data
);
187 o
= avl_find_element(&iface
->data
, name
, o
, node
);
189 if (blob_pad_len(o
->data
) == len
&& !memcmp(o
->data
, data
, len
))
192 interface_data_del(iface
, o
);
195 n
= calloc(1, sizeof(*n
) + len
);
197 return UBUS_STATUS_UNKNOWN_ERROR
;
199 memcpy(n
->data
, data
, len
);
200 n
->node
.key
= blobmsg_name(n
->data
);
201 avl_insert(&iface
->data
, &n
->node
);
203 iface
->updated
|= IUF_DATA
;
207 int interface_parse_data(struct interface
*iface
, const struct blob_attr
*attr
)
209 struct blob_attr
*cur
;
214 blob_for_each_attr(cur
, attr
, rem
) {
215 ret
= interface_add_data(iface
, cur
);
220 if (iface
->updated
&& iface
->state
== IFS_UP
)
221 interface_event(iface
, IFEV_UPDATE
);
227 interface_event(struct interface
*iface
, enum interface_event ev
)
229 struct interface_user
*dep
, *tmp
;
230 struct device
*adev
= NULL
;
232 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
233 dep
->cb(dep
, iface
, ev
);
235 list_for_each_entry_safe(dep
, tmp
, &iface_all_users
, list
)
236 dep
->cb(dep
, iface
, ev
);
240 interface_error_flush(iface
);
241 adev
= iface
->l3_dev
.dev
;
245 alias_notify_device(iface
->name
, adev
);
253 interface_flush_state(struct interface
*iface
)
255 if (iface
->l3_dev
.dev
)
256 device_release(&iface
->l3_dev
);
257 interface_data_flush(iface
);
261 mark_interface_down(struct interface
*iface
)
263 enum interface_state state
= iface
->state
;
265 if (state
== IFS_DOWN
)
268 iface
->link_up_event
= false;
269 iface
->state
= IFS_DOWN
;
272 interface_event(iface
, IFEV_DOWN
);
275 interface_event(iface
, IFEV_UP_FAILED
);
280 interface_ip_set_enabled(&iface
->config_ip
, false);
281 interface_ip_set_enabled(&iface
->proto_ip
, false);
282 interface_ip_flush(&iface
->proto_ip
);
283 interface_flush_state(iface
);
284 system_flush_routes();
288 __set_config_state(struct interface
*iface
, enum interface_config_state s
)
290 iface
->config_state
= s
;
294 __interface_set_down(struct interface
*iface
, bool force
)
296 enum interface_state state
= iface
->state
;
300 iface
->state
= IFS_TEARDOWN
;
302 __set_config_state(iface
, IFC_REMOVE
);
305 interface_event(iface
, IFEV_DOWN
);
307 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, force
);
309 interface_flush_state(iface
);
313 if (iface
->main_dev
.dev
)
314 device_release(&iface
->main_dev
);
322 __interface_set_up(struct interface
*iface
)
326 netifd_log_message(L_NOTICE
, "Interface '%s' is setting up now\n", iface
->name
);
328 iface
->state
= IFS_SETUP
;
329 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
331 mark_interface_down(iface
);
337 interface_check_state(struct interface
*iface
)
339 bool link_state
= iface
->link_state
|| iface
->force_link
;
341 switch (iface
->state
) {
344 if (!iface
->enabled
|| !link_state
) {
345 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
347 __set_config_state(iface
, IFC_REMOVE
);
349 mark_interface_down(iface
);
353 if (!iface
->available
)
356 if (iface
->autostart
&& iface
->enabled
&& link_state
&& !config_init
)
357 __interface_set_up(iface
);
365 interface_set_enabled(struct interface
*iface
, bool new_state
)
367 if (iface
->enabled
== new_state
)
370 netifd_log_message(L_NOTICE
, "Interface '%s' is %s\n", iface
->name
, new_state
? "enabled" : "disabled");
371 iface
->enabled
= new_state
;
372 interface_check_state(iface
);
376 interface_set_link_state(struct interface
*iface
, bool new_state
)
378 if (iface
->link_state
== new_state
)
381 netifd_log_message(L_NOTICE
, "Interface '%s' has link connectivity %s\n", iface
->name
, new_state
? "" : "loss");
382 iface
->link_state
= new_state
;
383 interface_check_state(iface
);
385 if (new_state
&& iface
->force_link
&& iface
->state
== IFS_UP
&& !iface
->link_up_event
) {
386 interface_event(iface
, IFEV_LINK_UP
);
387 iface
->link_up_event
= true;
392 interface_ext_dev_cb(struct device_user
*dep
, enum device_event ev
)
394 if (ev
== DEV_EVENT_REMOVE
)
395 device_remove_user(dep
);
399 interface_main_dev_cb(struct device_user
*dep
, enum device_event ev
)
401 struct interface
*iface
;
403 iface
= container_of(dep
, struct interface
, main_dev
);
406 interface_set_available(iface
, true);
408 case DEV_EVENT_REMOVE
:
409 interface_set_available(iface
, false);
410 if (dep
->dev
&& dep
->dev
->external
)
411 interface_set_main_dev(iface
, NULL
);
414 interface_set_enabled(iface
, true);
417 interface_set_enabled(iface
, false);
419 case DEV_EVENT_LINK_UP
:
420 interface_set_link_state(iface
, true);
422 case DEV_EVENT_LINK_DOWN
:
423 interface_set_link_state(iface
, false);
425 case DEV_EVENT_TOPO_CHANGE
:
426 interface_proto_event(iface
->proto
, PROTO_CMD_RENEW
, false);
434 interface_l3_dev_cb(struct device_user
*dep
, enum device_event ev
)
436 struct interface
*iface
;
438 iface
= container_of(dep
, struct interface
, l3_dev
);
439 if (iface
->l3_dev
.dev
== iface
->main_dev
.dev
)
443 case DEV_EVENT_LINK_DOWN
:
444 if (iface
->proto_handler
->flags
& PROTO_FLAG_TEARDOWN_ON_L3_LINK_DOWN
)
445 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
453 interface_set_available(struct interface
*iface
, bool new_state
)
455 if (iface
->available
== new_state
)
458 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
459 iface
->available
= new_state
;
462 if (iface
->autostart
&& !config_init
)
463 interface_set_up(iface
);
465 __interface_set_down(iface
, true);
469 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
472 list_add(&dep
->list
, &iface_all_users
);
477 list_add(&dep
->list
, &iface
->users
);
478 if (iface
->state
== IFS_UP
)
479 dep
->cb(dep
, iface
, IFEV_UP
);
483 interface_remove_user(struct interface_user
*dep
)
485 list_del_init(&dep
->list
);
490 interface_add_assignment_classes(struct interface
*iface
, struct blob_attr
*list
)
492 struct blob_attr
*cur
;
495 blobmsg_for_each_attr(cur
, list
, rem
) {
496 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
499 if (!blobmsg_check_attr(cur
, NULL
))
502 struct interface_assignment_class
*c
= malloc(sizeof(*c
) + blobmsg_data_len(cur
));
503 memcpy(c
->name
, blobmsg_data(cur
), blobmsg_data_len(cur
));
504 list_add(&c
->head
, &iface
->assignment_classes
);
509 interface_clear_assignment_classes(struct interface
*iface
)
511 while (!list_empty(&iface
->assignment_classes
)) {
512 struct interface_assignment_class
*c
= list_first_entry(&iface
->assignment_classes
,
513 struct interface_assignment_class
, head
);
520 interface_merge_assignment_data(struct interface
*old
, struct interface
*new)
522 bool changed
= (old
->assignment_hint
!= new->assignment_hint
||
523 old
->assignment_length
!= new->assignment_length
||
524 old
->assignment_iface_id_selection
!= new->assignment_iface_id_selection
||
525 old
->assignment_weight
!= new->assignment_weight
||
526 (old
->assignment_iface_id_selection
== IFID_FIXED
&&
527 memcmp(&old
->assignment_fixed_iface_id
, &new->assignment_fixed_iface_id
,
528 sizeof(old
->assignment_fixed_iface_id
))) ||
529 list_empty(&old
->assignment_classes
) != list_empty(&new->assignment_classes
));
531 struct interface_assignment_class
*c
;
532 list_for_each_entry(c
, &new->assignment_classes
, head
) {
533 // Compare list entries one-by-one to see if there was a change
534 if (list_empty(&old
->assignment_classes
)) // The new list is longer
540 struct interface_assignment_class
*c_old
= list_first_entry(&old
->assignment_classes
,
541 struct interface_assignment_class
, head
);
543 if (strcmp(c_old
->name
, c
->name
)) // An entry didn't match
546 list_del(&c_old
->head
);
550 // The old list was longer than the new one or the last entry didn't match
551 if (!list_empty(&old
->assignment_classes
)) {
552 interface_clear_assignment_classes(old
);
556 list_splice_init(&new->assignment_classes
, &old
->assignment_classes
);
559 old
->assignment_hint
= new->assignment_hint
;
560 old
->assignment_length
= new->assignment_length
;
561 old
->assignment_iface_id_selection
= new->assignment_iface_id_selection
;
562 old
->assignment_fixed_iface_id
= new->assignment_fixed_iface_id
;
563 old
->assignment_weight
= new->assignment_weight
;
564 interface_refresh_assignments(true);
569 interface_alias_cb(struct interface_user
*dep
, struct interface
*iface
, enum interface_event ev
)
571 struct interface
*alias
= container_of(dep
, struct interface
, parent_iface
);
572 struct device
*dev
= iface
->l3_dev
.dev
;
579 interface_set_main_dev(alias
, dev
);
580 interface_set_available(alias
, true);
584 interface_set_available(alias
, false);
585 interface_set_main_dev(alias
, NULL
);
588 interface_remove_user(dep
);
596 interface_set_device_config(struct interface
*iface
, struct device
*dev
)
598 if (!dev
|| !dev
->default_config
)
601 if (!iface
->device_config
&&
602 (!dev
->iface_config
|| dev
->config_iface
!= iface
))
605 dev
->config_iface
= iface
;
606 dev
->iface_config
= iface
->device_config
;
607 device_apply_config(dev
, dev
->type
, iface
->config
);
611 interface_claim_device(struct interface
*iface
)
613 struct interface
*parent
;
614 struct device
*dev
= NULL
;
616 if (iface
->parent_iface
.iface
)
617 interface_remove_user(&iface
->parent_iface
);
621 if (iface
->parent_ifname
) {
622 parent
= vlist_find(&interfaces
, iface
->parent_ifname
, parent
, node
);
623 iface
->parent_iface
.cb
= interface_alias_cb
;
624 interface_add_user(&iface
->parent_iface
, parent
);
625 } else if (iface
->ifname
&&
626 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
627 dev
= device_get(iface
->ifname
, true);
628 interface_set_device_config(iface
, dev
);
630 dev
= iface
->ext_dev
.dev
;
634 interface_set_main_dev(iface
, dev
);
638 if (iface
->proto_handler
->flags
& PROTO_FLAG_INIT_AVAILABLE
)
639 interface_set_available(iface
, true);
643 interface_cleanup_state(struct interface
*iface
)
645 interface_set_available(iface
, false);
647 interface_flush_state(iface
);
648 interface_clear_errors(iface
);
649 interface_set_proto_state(iface
, NULL
);
651 interface_set_main_dev(iface
, NULL
);
652 interface_set_l3_dev(iface
, NULL
);
656 interface_cleanup(struct interface
*iface
)
658 struct interface_user
*dep
, *tmp
;
660 uloop_timeout_cancel(&iface
->remove_timer
);
661 device_remove_user(&iface
->ext_dev
);
663 if (iface
->parent_iface
.iface
)
664 interface_remove_user(&iface
->parent_iface
);
666 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
667 interface_remove_user(dep
);
669 interface_clear_assignment_classes(iface
);
670 interface_ip_flush(&iface
->config_ip
);
671 interface_cleanup_state(iface
);
675 interface_do_free(struct interface
*iface
)
677 interface_event(iface
, IFEV_FREE
);
678 interface_cleanup(iface
);
680 netifd_ubus_remove_interface(iface
);
681 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
686 interface_do_reload(struct interface
*iface
)
688 interface_event(iface
, IFEV_RELOAD
);
689 interface_cleanup_state(iface
);
690 proto_init_interface(iface
, iface
->config
);
691 interface_claim_device(iface
);
695 interface_handle_config_change(struct interface
*iface
)
697 enum interface_config_state state
= iface
->config_state
;
699 iface
->config_state
= IFC_NORMAL
;
704 interface_do_reload(iface
);
707 interface_do_free(iface
);
710 if (iface
->autostart
)
711 interface_set_up(iface
);
715 interface_proto_event_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
717 struct interface
*iface
= state
->iface
;
721 if (iface
->state
!= IFS_SETUP
) {
722 if (iface
->state
== IFS_UP
&& iface
->updated
)
723 interface_event(iface
, IFEV_UPDATE
);
727 if (!iface
->l3_dev
.dev
)
728 interface_set_l3_dev(iface
, iface
->main_dev
.dev
);
730 interface_ip_set_enabled(&iface
->config_ip
, true);
731 interface_ip_set_enabled(&iface
->proto_ip
, true);
732 system_flush_routes();
733 iface
->state
= IFS_UP
;
734 iface
->start_time
= system_get_rtime();
735 interface_event(iface
, IFEV_UP
);
736 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
739 if (iface
->state
== IFS_DOWN
)
742 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
743 mark_interface_down(iface
);
744 if (iface
->main_dev
.dev
)
745 device_release(&iface
->main_dev
);
746 if (iface
->l3_dev
.dev
)
747 device_remove_user(&iface
->l3_dev
);
748 interface_handle_config_change(iface
);
750 case IFPEV_LINK_LOST
:
751 if (iface
->state
!= IFS_UP
)
754 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
755 mark_interface_down(iface
);
756 iface
->state
= IFS_SETUP
;
762 interface_write_resolv_conf();
765 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
768 iface
->proto
->free(iface
->proto
);
771 iface
->state
= IFS_DOWN
;
772 iface
->proto
= state
;
776 state
->proto_event
= interface_proto_event_cb
;
777 state
->iface
= iface
;
781 interface_alloc(const char *name
, struct blob_attr
*config
, bool dynamic
)
783 struct interface
*iface
;
784 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
785 struct blob_attr
*cur
;
786 const char *proto_name
= NULL
;
788 bool force_link
= false;
790 iface
= calloc_a(sizeof(*iface
), &iface_name
, strlen(name
) + 1);
791 iface
->name
= strcpy(iface_name
, name
);
792 INIT_LIST_HEAD(&iface
->errors
);
793 INIT_LIST_HEAD(&iface
->users
);
794 INIT_LIST_HEAD(&iface
->hotplug_list
);
795 INIT_LIST_HEAD(&iface
->assignment_classes
);
796 interface_ip_init(iface
);
797 avl_init(&iface
->data
, avl_strcmp
, false, NULL
);
798 iface
->config_ip
.enabled
= false;
800 iface
->main_dev
.cb
= interface_main_dev_cb
;
801 iface
->l3_dev
.cb
= interface_l3_dev_cb
;
802 iface
->ext_dev
.cb
= interface_ext_dev_cb
;
804 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
805 blob_data(config
), blob_len(config
));
807 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
808 proto_name
= blobmsg_data(cur
);
810 proto_attach_interface(iface
, proto_name
);
811 if (iface
->proto_handler
->flags
& PROTO_FLAG_FORCE_LINK_DEFAULT
)
814 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
815 iface
->force_link
= blobmsg_get_bool_default(tb
[IFACE_ATTR_FORCE_LINK
], force_link
);
816 iface
->dynamic
= dynamic
;
817 iface
->proto_ip
.no_defaultroute
=
818 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
819 iface
->proto_ip
.no_dns
=
820 !blobmsg_get_bool_default(tb
[IFACE_ATTR_PEERDNS
], true);
822 if ((cur
= tb
[IFACE_ATTR_DNS
]))
823 interface_add_dns_server_list(&iface
->config_ip
, cur
);
825 if ((cur
= tb
[IFACE_ATTR_DNS_SEARCH
]))
826 interface_add_dns_search_list(&iface
->config_ip
, cur
);
828 if ((cur
= tb
[IFACE_ATTR_DNS_METRIC
]))
829 iface
->dns_metric
= blobmsg_get_u32(cur
);
831 if ((cur
= tb
[IFACE_ATTR_METRIC
]))
832 iface
->metric
= blobmsg_get_u32(cur
);
834 if ((cur
= tb
[IFACE_ATTR_IP6ASSIGN
]))
835 iface
->assignment_length
= blobmsg_get_u32(cur
);
838 iface
->assignment_iface_id_selection
= IFID_FIXED
;
839 iface
->assignment_fixed_iface_id
= in6addr_any
;
840 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
842 if ((cur
= tb
[IFACE_ATTR_IP6IFACEID
])) {
843 const char *ifaceid
= blobmsg_data(cur
);
844 if (!strcmp(ifaceid
, "random")) {
845 iface
->assignment_iface_id_selection
= IFID_RANDOM
;
847 else if (!strcmp(ifaceid
, "eui64")) {
848 iface
->assignment_iface_id_selection
= IFID_EUI64
;
851 /* we expect an IPv6 address with network id zero here -> fixed iface id
852 if we cannot parse -> revert to iface id 1 */
853 if (inet_pton(AF_INET6
,ifaceid
,&iface
->assignment_fixed_iface_id
) != 1 ||
854 iface
->assignment_fixed_iface_id
.s6_addr32
[0] != 0 ||
855 iface
->assignment_fixed_iface_id
.s6_addr32
[1] != 0) {
856 iface
->assignment_fixed_iface_id
= in6addr_any
;
857 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
858 netifd_log_message(L_WARNING
, "Failed to parse ip6ifaceid for interface '%s', \
859 falling back to iface id 1.\n", iface
->name
);
864 iface
->assignment_hint
= -1;
865 if ((cur
= tb
[IFACE_ATTR_IP6HINT
]))
866 iface
->assignment_hint
= strtol(blobmsg_get_string(cur
), NULL
, 16) &
867 ~((1 << (64 - iface
->assignment_length
)) - 1);
869 if ((cur
= tb
[IFACE_ATTR_IP6CLASS
]))
870 interface_add_assignment_classes(iface
, cur
);
872 if ((cur
= tb
[IFACE_ATTR_IP6WEIGHT
]))
873 iface
->assignment_weight
= blobmsg_get_u32(cur
);
875 if ((cur
= tb
[IFACE_ATTR_IP4TABLE
])) {
876 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip4table
))
877 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
880 if ((cur
= tb
[IFACE_ATTR_IP6TABLE
])) {
881 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip6table
))
882 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
885 iface
->proto_ip
.no_delegation
= !blobmsg_get_bool_default(tb
[IFACE_ATTR_DELEGATE
], true);
887 iface
->config_autostart
= iface
->autostart
;
891 static bool __interface_add(struct interface
*iface
, struct blob_attr
*config
, bool alias
)
893 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
894 struct blob_attr
*cur
;
895 char *name
= iface
->dynamic
? strdup(iface
->name
) : NULL
;
897 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
898 blob_data(config
), blob_len(config
));
901 if ((cur
= tb
[IFACE_ATTR_INTERFACE
]))
902 iface
->parent_ifname
= blobmsg_data(cur
);
904 if (!iface
->parent_ifname
)
907 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
908 iface
->ifname
= blobmsg_data(cur
);
911 iface
->config
= config
;
912 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
915 iface
= vlist_find(&interfaces
, name
, iface
, node
);
921 /* Don't delete dynamic interface on reload */
922 iface
->node
.version
= -1;
929 interface_add(struct interface
*iface
, struct blob_attr
*config
)
931 return __interface_add(iface
, config
, false);
935 interface_add_alias(struct interface
*iface
, struct blob_attr
*config
)
937 if (iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)
940 return __interface_add(iface
, config
, true);
944 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
946 bool enabled
= iface
->config_ip
.enabled
;
947 bool claimed
= iface
->l3_dev
.claimed
;
949 if (iface
->l3_dev
.dev
== dev
)
952 interface_ip_set_enabled(&iface
->config_ip
, false);
953 interface_ip_set_enabled(&iface
->proto_ip
, false);
954 interface_ip_flush(&iface
->proto_ip
);
955 device_add_user(&iface
->l3_dev
, dev
);
959 if (device_claim(&iface
->l3_dev
) < 0)
962 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
963 interface_ip_set_enabled(&iface
->proto_ip
, enabled
);
968 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
970 bool claimed
= iface
->l3_dev
.claimed
;
972 if (iface
->main_dev
.dev
== dev
)
975 interface_set_available(iface
, false);
976 device_add_user(&iface
->main_dev
, dev
);
978 interface_set_link_state(iface
, false);
983 if (device_claim(&iface
->l3_dev
) < 0)
987 if (!iface
->l3_dev
.dev
)
988 interface_set_l3_dev(iface
, dev
);
992 interface_remove_link(struct interface
*iface
, struct device
*dev
)
994 struct device
*mdev
= iface
->main_dev
.dev
;
996 if (mdev
&& mdev
->hotplug_ops
)
997 return mdev
->hotplug_ops
->del(mdev
, dev
);
999 if (dev
== iface
->ext_dev
.dev
)
1000 device_remove_user(&iface
->ext_dev
);
1002 if (!iface
->main_dev
.hotplug
)
1003 return UBUS_STATUS_INVALID_ARGUMENT
;
1005 if (dev
!= iface
->main_dev
.dev
)
1006 return UBUS_STATUS_INVALID_ARGUMENT
;
1008 interface_set_main_dev(iface
, NULL
);
1013 interface_add_link(struct interface
*iface
, struct device
*dev
, bool link_ext
)
1015 struct device
*mdev
= iface
->main_dev
.dev
;
1020 if (iface
->main_dev
.hotplug
)
1021 device_remove_user(&iface
->main_dev
);
1024 if (mdev
->hotplug_ops
)
1025 return mdev
->hotplug_ops
->add(mdev
, dev
);
1027 return UBUS_STATUS_NOT_SUPPORTED
;
1031 device_add_user(&iface
->ext_dev
, dev
);
1033 interface_set_main_dev(iface
, dev
);
1034 iface
->main_dev
.hotplug
= true;
1039 interface_handle_link(struct interface
*iface
, const char *name
, bool add
, bool link_ext
)
1046 dev
= device_get(name
, add
? (link_ext
? 2 : 1) : 0);
1048 ret
= UBUS_STATUS_NOT_FOUND
;
1053 interface_set_device_config(iface
, dev
);
1054 device_set_present(dev
, true);
1056 ret
= interface_add_link(iface
, dev
, link_ext
);
1058 ret
= interface_remove_link(iface
, dev
);
1068 interface_set_up(struct interface
*iface
)
1071 const char *error
= NULL
;
1073 iface
->autostart
= true;
1075 if (iface
->state
!= IFS_DOWN
)
1078 interface_clear_errors(iface
);
1079 if (iface
->available
) {
1080 if (iface
->main_dev
.dev
) {
1081 ret
= device_claim(&iface
->main_dev
);
1083 interface_check_state(iface
);
1085 error
= "DEVICE_CLAIM_FAILED";
1087 ret
= __interface_set_up(iface
);
1089 error
= "SETUP_FAILED";
1092 error
= "NO_DEVICE";
1095 interface_add_error(iface
, "interface", error
, NULL
, 0);
1099 interface_set_down(struct interface
*iface
)
1102 vlist_for_each_element(&interfaces
, iface
, node
)
1103 __interface_set_down(iface
, false);
1105 iface
->autostart
= false;
1106 __interface_set_down(iface
, false);
1111 interface_renew(struct interface
*iface
)
1113 if (iface
->state
== IFS_TEARDOWN
|| iface
->state
== IFS_DOWN
)
1116 return interface_proto_event(iface
->proto
, PROTO_CMD_RENEW
, false);
1120 interface_start_pending(void)
1122 struct interface
*iface
;
1124 vlist_for_each_element(&interfaces
, iface
, node
) {
1125 if (iface
->autostart
)
1126 interface_set_up(iface
);
1131 set_config_state(struct interface
*iface
, enum interface_config_state s
)
1133 __set_config_state(iface
, s
);
1134 if (iface
->state
== IFS_DOWN
)
1135 interface_handle_config_change(iface
);
1137 __interface_set_down(iface
, false);
1141 interface_update_start(struct interface
*iface
, const bool keep_old
)
1146 interface_ip_update_start(&iface
->proto_ip
);
1150 interface_update_complete(struct interface
*iface
)
1152 interface_ip_update_complete(&iface
->proto_ip
);
1156 interface_replace_dns(struct interface_ip_settings
*new, struct interface_ip_settings
*old
)
1158 vlist_simple_replace(&new->dns_servers
, &old
->dns_servers
);
1159 vlist_simple_replace(&new->dns_search
, &old
->dns_search
);
1163 interface_device_config_changed(struct interface
*if_old
, struct interface
*if_new
)
1165 struct blob_attr
*ntb
[__DEV_ATTR_MAX
];
1166 struct blob_attr
*otb
[__DEV_ATTR_MAX
];
1167 struct device
*dev
= if_old
->main_dev
.dev
;
1168 unsigned long diff
= 0;
1170 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ 8);
1175 if (if_old
->device_config
!= if_new
->device_config
)
1178 if (!if_new
->device_config
)
1181 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb
,
1182 blob_data(if_old
->config
), blob_len(if_old
->config
));
1184 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, ntb
,
1185 blob_data(if_new
->config
), blob_len(if_new
->config
));
1187 uci_blob_diff(ntb
, otb
, &device_attr_list
, &diff
);
1192 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
1194 struct blob_attr
*old_config
= if_old
->config
;
1195 bool reload
= false, reload_ip
= false;
1197 #define FIELD_CHANGED_STR(field) \
1198 ((!!if_old->field != !!if_new->field) || \
1200 strcmp(if_old->field, if_new->field) != 0))
1202 if (FIELD_CHANGED_STR(parent_ifname
)) {
1203 if (if_old
->parent_iface
.iface
)
1204 interface_remove_user(&if_old
->parent_iface
);
1208 if (!reload
&& interface_device_config_changed(if_old
, if_new
))
1211 if (FIELD_CHANGED_STR(ifname
) ||
1212 if_old
->proto_handler
!= if_new
->proto_handler
)
1215 if (!if_old
->proto_handler
->config_params
)
1216 D(INTERFACE
, "No config parameters for interface '%s'\n",
1218 else if (!uci_blob_check_equal(if_old
->config
, if_new
->config
,
1219 if_old
->proto_handler
->config_params
))
1222 #define UPDATE(field, __var) ({ \
1223 bool __changed = (if_old->field != if_new->field); \
1224 if_old->field = if_new->field; \
1225 __var |= __changed; \
1228 if_old
->config
= if_new
->config
;
1229 if (if_old
->config_autostart
!= if_new
->config_autostart
) {
1230 if (if_old
->config_autostart
)
1233 if_old
->autostart
= if_new
->config_autostart
;
1236 if_old
->device_config
= if_new
->device_config
;
1237 if_old
->config_autostart
= if_new
->config_autostart
;
1238 if_old
->ifname
= if_new
->ifname
;
1239 if_old
->parent_ifname
= if_new
->parent_ifname
;
1240 if_old
->dynamic
= if_new
->dynamic
;
1241 if_old
->proto_handler
= if_new
->proto_handler
;
1242 if_old
->force_link
= if_new
->force_link
;
1243 if_old
->dns_metric
= if_new
->dns_metric
;
1245 if_old
->proto_ip
.no_dns
= if_new
->proto_ip
.no_dns
;
1246 interface_replace_dns(&if_old
->config_ip
, &if_new
->config_ip
);
1248 UPDATE(metric
, reload_ip
);
1249 UPDATE(proto_ip
.no_defaultroute
, reload_ip
);
1250 UPDATE(ip4table
, reload_ip
);
1251 UPDATE(ip6table
, reload_ip
);
1252 interface_merge_assignment_data(if_old
, if_new
);
1257 D(INTERFACE
, "Reload interface '%s' because of config changes\n",
1259 interface_clear_errors(if_old
);
1260 set_config_state(if_old
, IFC_RELOAD
);
1265 bool config_ip_enabled
= if_old
->config_ip
.enabled
;
1266 bool proto_ip_enabled
= if_old
->proto_ip
.enabled
;
1268 interface_ip_set_enabled(&if_old
->config_ip
, false);
1269 interface_ip_set_enabled(&if_old
->proto_ip
, false);
1270 interface_ip_set_enabled(&if_old
->proto_ip
, proto_ip_enabled
);
1271 interface_ip_set_enabled(&if_old
->config_ip
, config_ip_enabled
);
1274 interface_write_resolv_conf();
1275 if (if_old
->main_dev
.dev
)
1276 interface_check_state(if_old
);
1279 if_new
->config
= NULL
;
1280 interface_cleanup(if_new
);
1286 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
1287 struct vlist_node
*node_old
)
1289 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
1290 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
1292 if (node_old
&& node_new
) {
1293 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
1294 interface_change_config(if_old
, if_new
);
1295 } else if (node_old
) {
1296 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
1297 set_config_state(if_old
, IFC_REMOVE
);
1298 } else if (node_new
) {
1299 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
1300 interface_event(if_new
, IFEV_CREATE
);
1301 proto_init_interface(if_new
, if_new
->config
);
1302 interface_claim_device(if_new
);
1303 netifd_ubus_add_interface(if_new
);
1309 interface_init_list(void)
1311 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
1312 interfaces
.keep_old
= true;
1313 interfaces
.no_delete
= true;