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 set_config_state(struct interface
*iface
, enum interface_config_state s
);
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
;
244 alias_notify_device(iface
->name
, adev
);
252 interface_flush_state(struct interface
*iface
)
254 if (iface
->l3_dev
.dev
)
255 device_release(&iface
->l3_dev
);
256 interface_data_flush(iface
);
260 mark_interface_down(struct interface
*iface
)
262 enum interface_state state
= iface
->state
;
264 if (state
== IFS_DOWN
)
267 iface
->link_up_event
= false;
268 iface
->state
= IFS_DOWN
;
270 interface_event(iface
, IFEV_DOWN
);
271 interface_ip_set_enabled(&iface
->config_ip
, false);
272 interface_ip_set_enabled(&iface
->proto_ip
, false);
273 interface_ip_flush(&iface
->proto_ip
);
274 interface_flush_state(iface
);
275 system_flush_routes();
279 __interface_set_down(struct interface
*iface
, bool force
)
281 enum interface_state state
= iface
->state
;
285 iface
->state
= IFS_TEARDOWN
;
287 interface_event(iface
, IFEV_DOWN
);
289 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, force
);
291 interface_flush_state(iface
);
295 if (iface
->main_dev
.dev
)
296 device_release(&iface
->main_dev
);
304 __interface_set_up(struct interface
*iface
)
308 netifd_log_message(L_NOTICE
, "Interface '%s' is setting up now\n", iface
->name
);
310 iface
->state
= IFS_SETUP
;
311 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
313 mark_interface_down(iface
);
319 interface_check_state(struct interface
*iface
)
321 bool link_state
= iface
->link_state
|| iface
->force_link
;
323 switch (iface
->state
) {
326 if (!iface
->enabled
|| !link_state
) {
327 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
328 mark_interface_down(iface
);
332 if (!iface
->available
)
335 if (iface
->autostart
&& iface
->enabled
&& link_state
&& !config_init
)
336 __interface_set_up(iface
);
344 interface_set_enabled(struct interface
*iface
, bool new_state
)
346 if (iface
->enabled
== new_state
)
349 netifd_log_message(L_NOTICE
, "Interface '%s' is %s\n", iface
->name
, new_state
? "enabled" : "disabled");
350 iface
->enabled
= new_state
;
351 interface_check_state(iface
);
355 interface_set_link_state(struct interface
*iface
, bool new_state
)
357 if (iface
->link_state
== new_state
)
360 netifd_log_message(L_NOTICE
, "Interface '%s' has link connectivity %s\n", iface
->name
, new_state
? "" : "loss");
361 iface
->link_state
= new_state
;
362 interface_check_state(iface
);
364 if (new_state
&& iface
->force_link
&& iface
->state
== IFS_UP
&& !iface
->link_up_event
) {
365 interface_event(iface
, IFEV_LINK_UP
);
366 iface
->link_up_event
= true;
371 interface_ext_dev_cb(struct device_user
*dep
, enum device_event ev
)
373 if (ev
== DEV_EVENT_REMOVE
)
374 device_remove_user(dep
);
378 interface_main_dev_cb(struct device_user
*dep
, enum device_event ev
)
380 struct interface
*iface
;
381 bool new_state
= false;
383 iface
= container_of(dep
, struct interface
, main_dev
);
387 case DEV_EVENT_REMOVE
:
388 interface_set_available(iface
, new_state
);
389 if (!new_state
&& dep
->dev
&& dep
->dev
->external
)
390 interface_set_main_dev(iface
, NULL
);
395 interface_set_enabled(iface
, new_state
);
397 case DEV_EVENT_LINK_UP
:
399 case DEV_EVENT_LINK_DOWN
:
400 interface_set_link_state(iface
, new_state
);
402 case DEV_EVENT_TOPO_CHANGE
:
403 interface_proto_event(iface
->proto
, PROTO_CMD_RENEW
, false);
411 interface_l3_dev_cb(struct device_user
*dep
, enum device_event ev
)
413 struct interface
*iface
;
415 iface
= container_of(dep
, struct interface
, l3_dev
);
416 if (iface
->l3_dev
.dev
== iface
->main_dev
.dev
)
420 case DEV_EVENT_LINK_DOWN
:
421 if (iface
->proto_handler
->flags
& PROTO_FLAG_TEARDOWN_ON_L3_LINK_DOWN
)
422 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
430 interface_set_available(struct interface
*iface
, bool new_state
)
432 if (iface
->available
== new_state
)
435 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
436 iface
->available
= new_state
;
439 if (iface
->autostart
&& !config_init
)
440 interface_set_up(iface
);
442 __interface_set_down(iface
, true);
446 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
449 list_add(&dep
->list
, &iface_all_users
);
454 list_add(&dep
->list
, &iface
->users
);
455 if (iface
->state
== IFS_UP
)
456 dep
->cb(dep
, iface
, IFEV_UP
);
460 interface_remove_user(struct interface_user
*dep
)
462 list_del_init(&dep
->list
);
467 interface_add_assignment_classes(struct interface
*iface
, struct blob_attr
*list
)
469 struct blob_attr
*cur
;
472 blobmsg_for_each_attr(cur
, list
, rem
) {
473 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
476 if (!blobmsg_check_attr(cur
, NULL
))
479 struct interface_assignment_class
*c
= malloc(sizeof(*c
) + blobmsg_data_len(cur
));
480 memcpy(c
->name
, blobmsg_data(cur
), blobmsg_data_len(cur
));
481 list_add(&c
->head
, &iface
->assignment_classes
);
486 interface_clear_assignment_classes(struct interface
*iface
)
488 while (!list_empty(&iface
->assignment_classes
)) {
489 struct interface_assignment_class
*c
= list_first_entry(&iface
->assignment_classes
,
490 struct interface_assignment_class
, head
);
497 interface_merge_assignment_data(struct interface
*old
, struct interface
*new)
499 bool changed
= (old
->assignment_hint
!= new->assignment_hint
||
500 old
->assignment_length
!= new->assignment_length
||
501 old
->assignment_iface_id_selection
!= new->assignment_iface_id_selection
||
502 old
->assignment_weight
!= new->assignment_weight
||
503 (old
->assignment_iface_id_selection
== IFID_FIXED
&&
504 memcmp(&old
->assignment_fixed_iface_id
, &new->assignment_fixed_iface_id
,
505 sizeof(old
->assignment_fixed_iface_id
))) ||
506 list_empty(&old
->assignment_classes
) != list_empty(&new->assignment_classes
));
508 struct interface_assignment_class
*c
;
509 list_for_each_entry(c
, &new->assignment_classes
, head
) {
510 // Compare list entries one-by-one to see if there was a change
511 if (list_empty(&old
->assignment_classes
)) // The new list is longer
517 struct interface_assignment_class
*c_old
= list_first_entry(&old
->assignment_classes
,
518 struct interface_assignment_class
, head
);
520 if (strcmp(c_old
->name
, c
->name
)) // An entry didn't match
523 list_del(&c_old
->head
);
527 // The old list was longer than the new one or the last entry didn't match
528 if (!list_empty(&old
->assignment_classes
)) {
529 interface_clear_assignment_classes(old
);
533 list_splice_init(&new->assignment_classes
, &old
->assignment_classes
);
536 old
->assignment_hint
= new->assignment_hint
;
537 old
->assignment_length
= new->assignment_length
;
538 old
->assignment_iface_id_selection
= new->assignment_iface_id_selection
;
539 old
->assignment_fixed_iface_id
= new->assignment_fixed_iface_id
;
540 old
->assignment_weight
= new->assignment_weight
;
541 interface_refresh_assignments(true);
546 interface_alias_cb(struct interface_user
*dep
, struct interface
*iface
, enum interface_event ev
)
548 struct interface
*alias
= container_of(dep
, struct interface
, parent_iface
);
549 struct device
*dev
= iface
->l3_dev
.dev
;
556 interface_set_main_dev(alias
, dev
);
557 interface_set_available(alias
, true);
560 interface_set_available(alias
, false);
561 interface_set_main_dev(alias
, NULL
);
564 interface_remove_user(dep
);
572 interface_set_device_config(struct interface
*iface
, struct device
*dev
)
574 if (!dev
|| !dev
->default_config
)
577 if (!iface
->device_config
&&
578 (!dev
->iface_config
|| dev
->config_iface
!= iface
))
581 dev
->config_iface
= iface
;
582 dev
->iface_config
= iface
->device_config
;
583 device_apply_config(dev
, dev
->type
, iface
->config
);
587 interface_claim_device(struct interface
*iface
)
589 struct interface
*parent
;
590 struct device
*dev
= NULL
;
592 if (iface
->parent_iface
.iface
)
593 interface_remove_user(&iface
->parent_iface
);
597 if (iface
->parent_ifname
) {
598 parent
= vlist_find(&interfaces
, iface
->parent_ifname
, parent
, node
);
599 iface
->parent_iface
.cb
= interface_alias_cb
;
600 interface_add_user(&iface
->parent_iface
, parent
);
601 } else if (iface
->ifname
&&
602 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
603 dev
= device_get(iface
->ifname
, true);
604 interface_set_device_config(iface
, dev
);
606 dev
= iface
->ext_dev
.dev
;
610 interface_set_main_dev(iface
, dev
);
614 if (iface
->proto_handler
->flags
& PROTO_FLAG_INIT_AVAILABLE
)
615 interface_set_available(iface
, true);
619 interface_cleanup_state(struct interface
*iface
)
621 interface_set_available(iface
, false);
623 interface_flush_state(iface
);
624 interface_clear_errors(iface
);
625 interface_set_proto_state(iface
, NULL
);
627 interface_set_main_dev(iface
, NULL
);
628 interface_set_l3_dev(iface
, NULL
);
632 interface_cleanup(struct interface
*iface
)
634 struct interface_user
*dep
, *tmp
;
636 uloop_timeout_cancel(&iface
->remove_timer
);
637 device_remove_user(&iface
->ext_dev
);
639 if (iface
->parent_iface
.iface
)
640 interface_remove_user(&iface
->parent_iface
);
642 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
643 interface_remove_user(dep
);
645 interface_clear_assignment_classes(iface
);
646 interface_ip_flush(&iface
->config_ip
);
647 interface_cleanup_state(iface
);
651 interface_do_free(struct interface
*iface
)
653 interface_event(iface
, IFEV_FREE
);
654 interface_cleanup(iface
);
656 netifd_ubus_remove_interface(iface
);
657 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
662 interface_do_reload(struct interface
*iface
)
664 interface_event(iface
, IFEV_RELOAD
);
665 interface_cleanup_state(iface
);
666 proto_init_interface(iface
, iface
->config
);
667 interface_claim_device(iface
);
671 interface_handle_config_change(struct interface
*iface
)
673 enum interface_config_state state
= iface
->config_state
;
675 iface
->config_state
= IFC_NORMAL
;
680 interface_do_reload(iface
);
683 interface_do_free(iface
);
686 if (iface
->autostart
&& iface
->available
)
687 interface_set_up(iface
);
688 else if (iface
->dynamic
)
689 set_config_state(iface
, IFC_REMOVE
);
693 interface_proto_event_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
695 struct interface
*iface
= state
->iface
;
699 if (iface
->state
!= IFS_SETUP
) {
700 if (iface
->state
== IFS_UP
&& iface
->updated
)
701 interface_event(iface
, IFEV_UPDATE
);
705 if (!iface
->l3_dev
.dev
)
706 interface_set_l3_dev(iface
, iface
->main_dev
.dev
);
708 interface_ip_set_enabled(&iface
->config_ip
, true);
709 interface_ip_set_enabled(&iface
->proto_ip
, true);
710 system_flush_routes();
711 iface
->state
= IFS_UP
;
712 iface
->start_time
= system_get_rtime();
713 interface_event(iface
, IFEV_UP
);
714 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
717 if (iface
->state
== IFS_DOWN
)
720 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
721 mark_interface_down(iface
);
722 if (iface
->main_dev
.dev
)
723 device_release(&iface
->main_dev
);
724 if (iface
->l3_dev
.dev
)
725 device_remove_user(&iface
->l3_dev
);
726 interface_handle_config_change(iface
);
728 case IFPEV_LINK_LOST
:
729 if (iface
->state
!= IFS_UP
)
732 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
733 mark_interface_down(iface
);
734 iface
->state
= IFS_SETUP
;
740 interface_write_resolv_conf();
743 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
746 iface
->proto
->free(iface
->proto
);
749 iface
->state
= IFS_DOWN
;
750 iface
->proto
= state
;
754 state
->proto_event
= interface_proto_event_cb
;
755 state
->iface
= iface
;
759 interface_alloc(const char *name
, struct blob_attr
*config
)
761 struct interface
*iface
;
762 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
763 struct blob_attr
*cur
;
764 const char *proto_name
= NULL
;
766 bool force_link
= false;
768 iface
= calloc_a(sizeof(*iface
), &iface_name
, strlen(name
) + 1);
769 iface
->name
= strcpy(iface_name
, name
);
770 INIT_LIST_HEAD(&iface
->errors
);
771 INIT_LIST_HEAD(&iface
->users
);
772 INIT_LIST_HEAD(&iface
->hotplug_list
);
773 INIT_LIST_HEAD(&iface
->assignment_classes
);
774 interface_ip_init(iface
);
775 avl_init(&iface
->data
, avl_strcmp
, false, NULL
);
776 iface
->config_ip
.enabled
= false;
778 iface
->main_dev
.cb
= interface_main_dev_cb
;
779 iface
->l3_dev
.cb
= interface_l3_dev_cb
;
780 iface
->ext_dev
.cb
= interface_ext_dev_cb
;
782 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
783 blob_data(config
), blob_len(config
));
785 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
786 proto_name
= blobmsg_data(cur
);
788 proto_attach_interface(iface
, proto_name
);
789 if (iface
->proto_handler
->flags
& PROTO_FLAG_FORCE_LINK_DEFAULT
)
792 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
793 iface
->force_link
= blobmsg_get_bool_default(tb
[IFACE_ATTR_FORCE_LINK
], force_link
);
794 iface
->proto_ip
.no_defaultroute
=
795 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
796 iface
->proto_ip
.no_dns
=
797 !blobmsg_get_bool_default(tb
[IFACE_ATTR_PEERDNS
], true);
799 if ((cur
= tb
[IFACE_ATTR_DNS
]))
800 interface_add_dns_server_list(&iface
->config_ip
, cur
);
802 if ((cur
= tb
[IFACE_ATTR_DNS_SEARCH
]))
803 interface_add_dns_search_list(&iface
->config_ip
, cur
);
805 if ((cur
= tb
[IFACE_ATTR_DNS_METRIC
]))
806 iface
->dns_metric
= blobmsg_get_u32(cur
);
808 if ((cur
= tb
[IFACE_ATTR_METRIC
]))
809 iface
->metric
= blobmsg_get_u32(cur
);
811 if ((cur
= tb
[IFACE_ATTR_IP6ASSIGN
]))
812 iface
->assignment_length
= blobmsg_get_u32(cur
);
815 iface
->assignment_iface_id_selection
= IFID_FIXED
;
816 iface
->assignment_fixed_iface_id
= in6addr_any
;
817 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
819 if ((cur
= tb
[IFACE_ATTR_IP6IFACEID
])) {
820 const char *ifaceid
= blobmsg_data(cur
);
821 if (!strcmp(ifaceid
, "random")) {
822 iface
->assignment_iface_id_selection
= IFID_RANDOM
;
824 else if (!strcmp(ifaceid
, "eui64")) {
825 iface
->assignment_iface_id_selection
= IFID_EUI64
;
828 /* we expect an IPv6 address with network id zero here -> fixed iface id
829 if we cannot parse -> revert to iface id 1 */
830 if (inet_pton(AF_INET6
,ifaceid
,&iface
->assignment_fixed_iface_id
) != 1 ||
831 iface
->assignment_fixed_iface_id
.s6_addr32
[0] != 0 ||
832 iface
->assignment_fixed_iface_id
.s6_addr32
[1] != 0) {
833 iface
->assignment_fixed_iface_id
= in6addr_any
;
834 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
835 netifd_log_message(L_WARNING
, "Failed to parse ip6ifaceid for interface '%s', \
836 falling back to iface id 1.\n", iface
->name
);
841 iface
->assignment_hint
= -1;
842 if ((cur
= tb
[IFACE_ATTR_IP6HINT
]))
843 iface
->assignment_hint
= strtol(blobmsg_get_string(cur
), NULL
, 16) &
844 ~((1 << (64 - iface
->assignment_length
)) - 1);
846 if ((cur
= tb
[IFACE_ATTR_IP6CLASS
]))
847 interface_add_assignment_classes(iface
, cur
);
849 if ((cur
= tb
[IFACE_ATTR_IP6WEIGHT
]))
850 iface
->assignment_weight
= blobmsg_get_u32(cur
);
852 if ((cur
= tb
[IFACE_ATTR_IP4TABLE
])) {
853 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip4table
))
854 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
857 if ((cur
= tb
[IFACE_ATTR_IP6TABLE
])) {
858 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip6table
))
859 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
862 iface
->proto_ip
.no_delegation
= !blobmsg_get_bool_default(tb
[IFACE_ATTR_DELEGATE
], true);
864 iface
->config_autostart
= iface
->autostart
;
868 void interface_set_dynamic(struct interface
*iface
)
870 iface
->dynamic
= true;
871 iface
->autostart
= true;
872 iface
->node
.version
= -1; // Don't delete on reload
875 static bool __interface_add(struct interface
*iface
, struct blob_attr
*config
, bool alias
)
877 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
878 struct blob_attr
*cur
;
880 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
881 blob_data(config
), blob_len(config
));
884 if ((cur
= tb
[IFACE_ATTR_INTERFACE
]))
885 iface
->parent_ifname
= blobmsg_data(cur
);
887 if (!iface
->parent_ifname
)
890 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
891 iface
->ifname
= blobmsg_data(cur
);
894 iface
->config
= config
;
895 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
900 interface_add(struct interface
*iface
, struct blob_attr
*config
)
902 __interface_add(iface
, config
, false);
906 interface_add_alias(struct interface
*iface
, struct blob_attr
*config
)
908 if (iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)
911 return __interface_add(iface
, config
, true);
915 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
917 bool enabled
= iface
->config_ip
.enabled
;
918 bool claimed
= iface
->l3_dev
.claimed
;
920 if (iface
->l3_dev
.dev
== dev
)
923 interface_ip_set_enabled(&iface
->config_ip
, false);
924 interface_ip_set_enabled(&iface
->proto_ip
, false);
925 interface_ip_flush(&iface
->proto_ip
);
926 device_add_user(&iface
->l3_dev
, dev
);
930 if (device_claim(&iface
->l3_dev
) < 0)
933 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
934 interface_ip_set_enabled(&iface
->proto_ip
, enabled
);
939 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
941 bool claimed
= iface
->l3_dev
.claimed
;
943 if (iface
->main_dev
.dev
== dev
)
946 interface_set_available(iface
, false);
947 device_add_user(&iface
->main_dev
, dev
);
949 interface_set_link_state(iface
, false);
954 if (device_claim(&iface
->l3_dev
) < 0)
958 if (!iface
->l3_dev
.dev
)
959 interface_set_l3_dev(iface
, dev
);
963 interface_remove_link(struct interface
*iface
, struct device
*dev
)
965 struct device
*mdev
= iface
->main_dev
.dev
;
967 if (mdev
&& mdev
->hotplug_ops
)
968 return mdev
->hotplug_ops
->del(mdev
, dev
);
970 if (dev
== iface
->ext_dev
.dev
)
971 device_remove_user(&iface
->ext_dev
);
973 if (!iface
->main_dev
.hotplug
)
974 return UBUS_STATUS_INVALID_ARGUMENT
;
976 if (dev
!= iface
->main_dev
.dev
)
977 return UBUS_STATUS_INVALID_ARGUMENT
;
979 interface_set_main_dev(iface
, NULL
);
984 interface_add_link(struct interface
*iface
, struct device
*dev
, bool link_ext
)
986 struct device
*mdev
= iface
->main_dev
.dev
;
991 if (iface
->main_dev
.hotplug
)
992 device_remove_user(&iface
->main_dev
);
995 if (mdev
->hotplug_ops
)
996 return mdev
->hotplug_ops
->add(mdev
, dev
);
998 return UBUS_STATUS_NOT_SUPPORTED
;
1002 device_add_user(&iface
->ext_dev
, dev
);
1004 interface_set_main_dev(iface
, dev
);
1005 iface
->main_dev
.hotplug
= true;
1010 interface_handle_link(struct interface
*iface
, const char *name
, bool add
, bool link_ext
)
1017 dev
= device_get(name
, add
? (link_ext
? 2 : 1) : 0);
1019 ret
= UBUS_STATUS_NOT_FOUND
;
1024 interface_set_device_config(iface
, dev
);
1025 device_set_present(dev
, true);
1027 ret
= interface_add_link(iface
, dev
, link_ext
);
1029 ret
= interface_remove_link(iface
, dev
);
1039 interface_set_up(struct interface
*iface
)
1043 iface
->autostart
= true;
1045 if (iface
->state
!= IFS_DOWN
)
1048 interface_clear_errors(iface
);
1049 if (!iface
->available
) {
1050 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
1054 if (iface
->main_dev
.dev
) {
1055 ret
= device_claim(&iface
->main_dev
);
1057 interface_check_state(iface
);
1060 ret
= __interface_set_up(iface
);
1066 interface_set_down(struct interface
*iface
)
1069 vlist_for_each_element(&interfaces
, iface
, node
)
1070 __interface_set_down(iface
, false);
1072 iface
->autostart
= false;
1073 __interface_set_down(iface
, false);
1080 interface_start_pending(void)
1082 struct interface
*iface
;
1084 vlist_for_each_element(&interfaces
, iface
, node
) {
1085 if (iface
->available
&& iface
->autostart
)
1086 interface_set_up(iface
);
1091 set_config_state(struct interface
*iface
, enum interface_config_state s
)
1093 iface
->config_state
= s
;
1094 if (iface
->state
== IFS_DOWN
)
1095 interface_handle_config_change(iface
);
1097 __interface_set_down(iface
, false);
1101 interface_update_start(struct interface
*iface
, const bool keep_old
)
1106 interface_ip_update_start(&iface
->proto_ip
);
1110 interface_update_complete(struct interface
*iface
)
1112 interface_ip_update_complete(&iface
->proto_ip
);
1116 interface_replace_dns(struct interface_ip_settings
*new, struct interface_ip_settings
*old
)
1118 vlist_simple_replace(&new->dns_servers
, &old
->dns_servers
);
1119 vlist_simple_replace(&new->dns_search
, &old
->dns_search
);
1123 interface_device_config_changed(struct interface
*if_old
, struct interface
*if_new
)
1125 struct blob_attr
*ntb
[__DEV_ATTR_MAX
];
1126 struct blob_attr
*otb
[__DEV_ATTR_MAX
];
1127 struct device
*dev
= if_old
->main_dev
.dev
;
1128 unsigned long diff
= 0;
1130 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ 8);
1135 if (if_old
->device_config
!= if_new
->device_config
)
1138 if (!if_new
->device_config
)
1141 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb
,
1142 blob_data(if_old
->config
), blob_len(if_old
->config
));
1144 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, ntb
,
1145 blob_data(if_new
->config
), blob_len(if_new
->config
));
1147 uci_blob_diff(ntb
, otb
, &device_attr_list
, &diff
);
1152 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
1154 struct blob_attr
*old_config
= if_old
->config
;
1155 bool reload
= false, reload_ip
= false;
1157 #define FIELD_CHANGED_STR(field) \
1158 ((!!if_old->field != !!if_new->field) || \
1160 strcmp(if_old->field, if_new->field) != 0))
1162 if (FIELD_CHANGED_STR(parent_ifname
)) {
1163 if (if_old
->parent_iface
.iface
)
1164 interface_remove_user(&if_old
->parent_iface
);
1168 if (!reload
&& interface_device_config_changed(if_old
, if_new
))
1171 if (FIELD_CHANGED_STR(ifname
) ||
1172 if_old
->proto_handler
!= if_new
->proto_handler
)
1175 if (!if_old
->proto_handler
->config_params
)
1176 D(INTERFACE
, "No config parameters for interface '%s'\n",
1178 else if (!uci_blob_check_equal(if_old
->config
, if_new
->config
,
1179 if_old
->proto_handler
->config_params
))
1182 #define UPDATE(field, __var) ({ \
1183 bool __changed = (if_old->field != if_new->field); \
1184 if_old->field = if_new->field; \
1185 __var |= __changed; \
1188 if_old
->config
= if_new
->config
;
1189 if (if_old
->config_autostart
!= if_new
->config_autostart
) {
1190 if (if_old
->config_autostart
)
1193 if_old
->autostart
= if_new
->config_autostart
;
1196 if_old
->device_config
= if_new
->device_config
;
1197 if_old
->config_autostart
= if_new
->config_autostart
;
1198 if_old
->ifname
= if_new
->ifname
;
1199 if_old
->parent_ifname
= if_new
->parent_ifname
;
1200 if_old
->proto_handler
= if_new
->proto_handler
;
1201 if_old
->force_link
= if_new
->force_link
;
1202 if_old
->dns_metric
= if_new
->dns_metric
;
1204 if_old
->proto_ip
.no_dns
= if_new
->proto_ip
.no_dns
;
1205 interface_replace_dns(&if_old
->config_ip
, &if_new
->config_ip
);
1207 UPDATE(metric
, reload_ip
);
1208 UPDATE(proto_ip
.no_defaultroute
, reload_ip
);
1209 UPDATE(ip4table
, reload_ip
);
1210 UPDATE(ip6table
, reload_ip
);
1211 interface_merge_assignment_data(if_old
, if_new
);
1216 D(INTERFACE
, "Reload interface '%s' because of config changes\n",
1218 interface_clear_errors(if_old
);
1219 set_config_state(if_old
, IFC_RELOAD
);
1224 bool config_ip_enabled
= if_old
->config_ip
.enabled
;
1225 bool proto_ip_enabled
= if_old
->proto_ip
.enabled
;
1227 interface_ip_set_enabled(&if_old
->config_ip
, false);
1228 interface_ip_set_enabled(&if_old
->proto_ip
, false);
1229 interface_ip_set_enabled(&if_old
->proto_ip
, proto_ip_enabled
);
1230 interface_ip_set_enabled(&if_old
->config_ip
, config_ip_enabled
);
1233 interface_write_resolv_conf();
1234 if (if_old
->main_dev
.dev
)
1235 interface_check_state(if_old
);
1238 if_new
->config
= NULL
;
1239 interface_cleanup(if_new
);
1245 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
1246 struct vlist_node
*node_old
)
1248 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
1249 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
1251 if (node_old
&& node_new
) {
1252 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
1253 interface_change_config(if_old
, if_new
);
1254 } else if (node_old
) {
1255 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
1256 set_config_state(if_old
, IFC_REMOVE
);
1257 } else if (node_new
) {
1258 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
1259 proto_init_interface(if_new
, if_new
->config
);
1260 interface_claim_device(if_new
);
1261 netifd_ubus_add_interface(if_new
);
1267 interface_init_list(void)
1269 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
1270 interfaces
.keep_old
= true;
1271 interfaces
.no_delete
= true;