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 const struct uci_blob_param_list interface_attr_list
= {
72 .n_params
= IFACE_ATTR_MAX
,
73 .params
= iface_attrs
,
77 set_config_state(struct interface
*iface
, enum interface_config_state s
);
79 interface_event(struct interface
*iface
, enum interface_event ev
);
82 interface_error_flush(struct interface
*iface
)
84 struct interface_error
*error
, *tmp
;
86 list_for_each_entry_safe(error
, tmp
, &iface
->errors
, list
) {
87 list_del(&error
->list
);
93 interface_clear_errors(struct interface
*iface
)
95 /* don't flush the errors in case the configured protocol handler matches the
96 running protocol handler and is having the last error capability */
98 (iface
->proto
->handler
->flags
& PROTO_FLAG_LASTERROR
) &&
99 (iface
->proto
->handler
->name
== iface
->proto_handler
->name
)))
100 interface_error_flush(iface
);
103 void interface_add_error(struct interface
*iface
, const char *subsystem
,
104 const char *code
, const char **data
, int n_data
)
106 struct interface_error
*error
;
109 char *dest
, *d_subsys
, *d_code
;
111 /* if the configured protocol handler has the last error support capability,
112 errors should only be added if the running protocol handler matches the
115 (iface
->proto
->handler
->flags
& PROTO_FLAG_LASTERROR
) &&
116 (iface
->proto
->handler
->name
!= iface
->proto_handler
->name
))
120 len
= n_data
* sizeof(char *);
121 datalen
= alloca(len
);
122 for (i
= 0; i
< n_data
; i
++) {
123 datalen
[i
] = strlen(data
[i
]) + 1;
128 error
= calloc_a(sizeof(*error
) + sizeof(char *) + len
,
129 &d_subsys
, subsystem
? strlen(subsystem
) + 1 : 0,
130 &d_code
, code
? strlen(code
) + 1 : 0);
134 /* Only keep the last flagged error, prevent this list grows unlimitted in case the
135 protocol can't be established (e.g auth failure) */
136 if (iface
->proto_handler
->flags
& PROTO_FLAG_LASTERROR
)
137 interface_error_flush(iface
);
139 list_add_tail(&error
->list
, &iface
->errors
);
141 dest
= (char *) &error
->data
[n_data
+ 1];
142 for (i
= 0; i
< n_data
; i
++) {
143 error
->data
[i
] = dest
;
144 memcpy(dest
, data
[i
], datalen
[i
]);
147 error
->data
[n_data
] = NULL
;
150 error
->subsystem
= strcpy(d_subsys
, subsystem
);
153 error
->code
= strcpy(d_code
, code
);
157 interface_data_del(struct interface
*iface
, struct interface_data
*data
)
159 avl_delete(&iface
->data
, &data
->node
);
164 interface_data_flush(struct interface
*iface
)
166 struct interface_data
*d
, *tmp
;
168 avl_for_each_element_safe(&iface
->data
, d
, node
, tmp
)
169 interface_data_del(iface
, d
);
173 interface_add_data(struct interface
*iface
, const struct blob_attr
*data
)
175 struct interface_data
*n
, *o
;
177 if (!blobmsg_check_attr(data
, true))
178 return UBUS_STATUS_INVALID_ARGUMENT
;
180 const char *name
= blobmsg_name(data
);
181 unsigned len
= blob_pad_len(data
);
183 o
= avl_find_element(&iface
->data
, name
, o
, node
);
185 if (blob_pad_len(o
->data
) == len
&& !memcmp(o
->data
, data
, len
))
188 interface_data_del(iface
, o
);
191 n
= calloc(1, sizeof(*n
) + len
);
193 return UBUS_STATUS_UNKNOWN_ERROR
;
195 memcpy(n
->data
, data
, len
);
196 n
->node
.key
= blobmsg_name(n
->data
);
197 avl_insert(&iface
->data
, &n
->node
);
199 iface
->updated
|= IUF_DATA
;
203 int interface_parse_data(struct interface
*iface
, const struct blob_attr
*attr
)
205 struct blob_attr
*cur
;
210 blob_for_each_attr(cur
, attr
, rem
) {
211 ret
= interface_add_data(iface
, cur
);
216 if (iface
->updated
&& iface
->state
== IFS_UP
)
217 interface_event(iface
, IFEV_UPDATE
);
223 interface_event(struct interface
*iface
, enum interface_event ev
)
225 struct interface_user
*dep
, *tmp
;
226 struct device
*adev
= NULL
;
228 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
229 dep
->cb(dep
, iface
, ev
);
231 list_for_each_entry_safe(dep
, tmp
, &iface_all_users
, list
)
232 dep
->cb(dep
, iface
, ev
);
236 interface_error_flush(iface
);
237 adev
= iface
->l3_dev
.dev
;
240 alias_notify_device(iface
->name
, adev
);
248 interface_flush_state(struct interface
*iface
)
250 if (iface
->l3_dev
.dev
)
251 device_release(&iface
->l3_dev
);
252 interface_data_flush(iface
);
256 mark_interface_down(struct interface
*iface
)
258 enum interface_state state
= iface
->state
;
260 if (state
== IFS_DOWN
)
263 iface
->link_up_event
= false;
264 iface
->state
= IFS_DOWN
;
266 interface_event(iface
, IFEV_DOWN
);
267 interface_ip_set_enabled(&iface
->config_ip
, false);
268 interface_ip_set_enabled(&iface
->proto_ip
, false);
269 interface_ip_flush(&iface
->proto_ip
);
270 interface_flush_state(iface
);
271 system_flush_routes();
275 __interface_set_down(struct interface
*iface
, bool force
)
277 enum interface_state state
= iface
->state
;
281 iface
->state
= IFS_TEARDOWN
;
283 interface_event(iface
, IFEV_DOWN
);
285 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, force
);
287 interface_flush_state(iface
);
291 if (iface
->main_dev
.dev
)
292 device_release(&iface
->main_dev
);
300 __interface_set_up(struct interface
*iface
)
304 netifd_log_message(L_NOTICE
, "Interface '%s' is setting up now\n", iface
->name
);
306 iface
->state
= IFS_SETUP
;
307 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
309 mark_interface_down(iface
);
315 interface_check_state(struct interface
*iface
)
317 bool link_state
= iface
->link_state
|| iface
->force_link
;
319 switch (iface
->state
) {
322 if (!iface
->enabled
|| !link_state
) {
323 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
324 mark_interface_down(iface
);
328 if (!iface
->available
)
331 if (iface
->autostart
&& iface
->enabled
&& link_state
&& !config_init
)
332 __interface_set_up(iface
);
340 interface_set_enabled(struct interface
*iface
, bool new_state
)
342 if (iface
->enabled
== new_state
)
345 netifd_log_message(L_NOTICE
, "Interface '%s' is %s\n", iface
->name
, new_state
? "enabled" : "disabled");
346 iface
->enabled
= new_state
;
347 interface_check_state(iface
);
351 interface_set_link_state(struct interface
*iface
, bool new_state
)
353 if (iface
->link_state
== new_state
)
356 netifd_log_message(L_NOTICE
, "Interface '%s' has link connectivity %s\n", iface
->name
, new_state
? "" : "loss");
357 iface
->link_state
= new_state
;
358 interface_check_state(iface
);
360 if (new_state
&& iface
->force_link
&& iface
->state
== IFS_UP
&& !iface
->link_up_event
) {
361 interface_event(iface
, IFEV_LINK_UP
);
362 iface
->link_up_event
= true;
367 interface_ext_dev_cb(struct device_user
*dep
, enum device_event ev
)
369 if (ev
== DEV_EVENT_REMOVE
)
370 device_remove_user(dep
);
374 interface_main_dev_cb(struct device_user
*dep
, enum device_event ev
)
376 struct interface
*iface
;
377 bool new_state
= false;
379 iface
= container_of(dep
, struct interface
, main_dev
);
383 case DEV_EVENT_REMOVE
:
384 interface_set_available(iface
, new_state
);
385 if (!new_state
&& dep
->dev
&& dep
->dev
->external
)
386 interface_set_main_dev(iface
, NULL
);
391 interface_set_enabled(iface
, new_state
);
393 case DEV_EVENT_LINK_UP
:
395 case DEV_EVENT_LINK_DOWN
:
396 interface_set_link_state(iface
, new_state
);
398 case DEV_EVENT_TOPO_CHANGE
:
399 interface_proto_event(iface
->proto
, PROTO_CMD_RENEW
, false);
407 interface_l3_dev_cb(struct device_user
*dep
, enum device_event ev
)
409 struct interface
*iface
;
411 iface
= container_of(dep
, struct interface
, l3_dev
);
412 if (iface
->l3_dev
.dev
== iface
->main_dev
.dev
)
416 case DEV_EVENT_LINK_DOWN
:
417 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
425 interface_set_available(struct interface
*iface
, bool new_state
)
427 if (iface
->available
== new_state
)
430 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
431 iface
->available
= new_state
;
434 if (iface
->autostart
&& !config_init
)
435 interface_set_up(iface
);
437 __interface_set_down(iface
, true);
441 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
444 list_add(&dep
->list
, &iface_all_users
);
449 list_add(&dep
->list
, &iface
->users
);
450 if (iface
->state
== IFS_UP
)
451 dep
->cb(dep
, iface
, IFEV_UP
);
455 interface_remove_user(struct interface_user
*dep
)
457 list_del_init(&dep
->list
);
462 interface_add_assignment_classes(struct interface
*iface
, struct blob_attr
*list
)
464 struct blob_attr
*cur
;
467 blobmsg_for_each_attr(cur
, list
, rem
) {
468 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
471 if (!blobmsg_check_attr(cur
, NULL
))
474 struct interface_assignment_class
*c
= malloc(sizeof(*c
) + blobmsg_data_len(cur
));
475 memcpy(c
->name
, blobmsg_data(cur
), blobmsg_data_len(cur
));
476 list_add(&c
->head
, &iface
->assignment_classes
);
481 interface_clear_assignment_classes(struct interface
*iface
)
483 while (!list_empty(&iface
->assignment_classes
)) {
484 struct interface_assignment_class
*c
= list_first_entry(&iface
->assignment_classes
,
485 struct interface_assignment_class
, head
);
492 interface_merge_assignment_data(struct interface
*old
, struct interface
*new)
494 bool changed
= (old
->assignment_hint
!= new->assignment_hint
||
495 old
->assignment_length
!= new->assignment_length
||
496 old
->assignment_iface_id_selection
!= new->assignment_iface_id_selection
||
497 (old
->assignment_iface_id_selection
== IFID_FIXED
&&
498 memcmp(&old
->assignment_fixed_iface_id
, &new->assignment_fixed_iface_id
,
499 sizeof(old
->assignment_fixed_iface_id
))) ||
500 list_empty(&old
->assignment_classes
) != list_empty(&new->assignment_classes
));
502 struct interface_assignment_class
*c
;
503 list_for_each_entry(c
, &new->assignment_classes
, head
) {
504 // Compare list entries one-by-one to see if there was a change
505 if (list_empty(&old
->assignment_classes
)) // The new list is longer
511 struct interface_assignment_class
*c_old
= list_first_entry(&old
->assignment_classes
,
512 struct interface_assignment_class
, head
);
514 if (strcmp(c_old
->name
, c
->name
)) // An entry didn't match
517 list_del(&c_old
->head
);
521 // The old list was longer than the new one or the last entry didn't match
522 if (!list_empty(&old
->assignment_classes
)) {
523 interface_clear_assignment_classes(old
);
527 list_splice_init(&new->assignment_classes
, &old
->assignment_classes
);
530 old
->assignment_hint
= new->assignment_hint
;
531 old
->assignment_length
= new->assignment_length
;
532 old
->assignment_iface_id_selection
= new->assignment_iface_id_selection
;
533 old
->assignment_fixed_iface_id
= new->assignment_fixed_iface_id
;
534 interface_refresh_assignments(true);
539 interface_alias_cb(struct interface_user
*dep
, struct interface
*iface
, enum interface_event ev
)
541 struct interface
*alias
= container_of(dep
, struct interface
, parent_iface
);
542 struct device
*dev
= iface
->l3_dev
.dev
;
549 interface_set_main_dev(alias
, dev
);
550 interface_set_available(alias
, true);
553 interface_set_available(alias
, false);
554 interface_set_main_dev(alias
, NULL
);
557 interface_remove_user(dep
);
565 interface_set_device_config(struct interface
*iface
, struct device
*dev
)
567 if (!dev
|| !dev
->default_config
)
570 if (!iface
->device_config
&&
571 (!dev
->iface_config
|| dev
->config_iface
!= iface
))
574 dev
->config_iface
= iface
;
575 dev
->iface_config
= iface
->device_config
;
576 device_apply_config(dev
, dev
->type
, iface
->config
);
580 interface_claim_device(struct interface
*iface
)
582 struct interface
*parent
;
583 struct device
*dev
= NULL
;
585 if (iface
->parent_iface
.iface
)
586 interface_remove_user(&iface
->parent_iface
);
588 if (iface
->parent_ifname
) {
589 parent
= vlist_find(&interfaces
, iface
->parent_ifname
, parent
, node
);
590 iface
->parent_iface
.cb
= interface_alias_cb
;
591 interface_add_user(&iface
->parent_iface
, parent
);
592 } else if (iface
->ifname
&&
593 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
594 dev
= device_get(iface
->ifname
, true);
595 interface_set_device_config(iface
, dev
);
597 dev
= iface
->ext_dev
.dev
;
601 interface_set_main_dev(iface
, dev
);
603 if (iface
->proto_handler
->flags
& PROTO_FLAG_INIT_AVAILABLE
)
604 interface_set_available(iface
, true);
608 interface_cleanup_state(struct interface
*iface
)
610 interface_set_available(iface
, false);
612 interface_flush_state(iface
);
613 interface_clear_errors(iface
);
614 interface_set_proto_state(iface
, NULL
);
616 interface_set_main_dev(iface
, NULL
);
617 interface_set_l3_dev(iface
, NULL
);
621 interface_cleanup(struct interface
*iface
)
623 struct interface_user
*dep
, *tmp
;
625 uloop_timeout_cancel(&iface
->remove_timer
);
626 device_remove_user(&iface
->ext_dev
);
628 if (iface
->parent_iface
.iface
)
629 interface_remove_user(&iface
->parent_iface
);
631 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
632 interface_remove_user(dep
);
634 interface_clear_assignment_classes(iface
);
635 interface_ip_flush(&iface
->config_ip
);
636 interface_cleanup_state(iface
);
640 interface_do_free(struct interface
*iface
)
642 interface_event(iface
, IFEV_FREE
);
643 interface_cleanup(iface
);
645 netifd_ubus_remove_interface(iface
);
646 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
651 interface_do_reload(struct interface
*iface
)
653 interface_event(iface
, IFEV_RELOAD
);
654 interface_cleanup_state(iface
);
655 proto_init_interface(iface
, iface
->config
);
656 interface_claim_device(iface
);
660 interface_handle_config_change(struct interface
*iface
)
662 enum interface_config_state state
= iface
->config_state
;
664 iface
->config_state
= IFC_NORMAL
;
669 interface_do_reload(iface
);
672 interface_do_free(iface
);
675 if (iface
->autostart
&& iface
->available
)
676 interface_set_up(iface
);
677 else if (iface
->dynamic
)
678 set_config_state(iface
, IFC_REMOVE
);
682 interface_proto_event_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
684 struct interface
*iface
= state
->iface
;
688 if (iface
->state
!= IFS_SETUP
) {
689 interface_event(iface
, IFEV_UPDATE
);
693 if (!iface
->l3_dev
.dev
)
694 interface_set_l3_dev(iface
, iface
->main_dev
.dev
);
696 interface_ip_set_enabled(&iface
->config_ip
, true);
697 interface_ip_set_enabled(&iface
->proto_ip
, true);
698 system_flush_routes();
699 iface
->state
= IFS_UP
;
700 iface
->start_time
= system_get_rtime();
701 interface_event(iface
, IFEV_UP
);
702 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
705 if (iface
->state
== IFS_DOWN
)
708 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
709 mark_interface_down(iface
);
710 if (iface
->main_dev
.dev
)
711 device_release(&iface
->main_dev
);
712 if (iface
->l3_dev
.dev
)
713 device_remove_user(&iface
->l3_dev
);
714 interface_handle_config_change(iface
);
716 case IFPEV_LINK_LOST
:
717 if (iface
->state
!= IFS_UP
)
720 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
721 mark_interface_down(iface
);
722 iface
->state
= IFS_SETUP
;
728 interface_write_resolv_conf();
731 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
734 iface
->proto
->free(iface
->proto
);
737 iface
->state
= IFS_DOWN
;
738 iface
->proto
= state
;
742 state
->proto_event
= interface_proto_event_cb
;
743 state
->iface
= iface
;
747 interface_alloc(const char *name
, struct blob_attr
*config
)
749 struct interface
*iface
;
750 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
751 struct blob_attr
*cur
;
752 const char *proto_name
= NULL
;
754 bool force_link
= false;
756 iface
= calloc_a(sizeof(*iface
), &iface_name
, strlen(name
) + 1);
757 iface
->name
= strcpy(iface_name
, name
);
758 INIT_LIST_HEAD(&iface
->errors
);
759 INIT_LIST_HEAD(&iface
->users
);
760 INIT_LIST_HEAD(&iface
->hotplug_list
);
761 INIT_LIST_HEAD(&iface
->assignment_classes
);
762 interface_ip_init(iface
);
763 avl_init(&iface
->data
, avl_strcmp
, false, NULL
);
764 iface
->config_ip
.enabled
= false;
766 iface
->main_dev
.cb
= interface_main_dev_cb
;
767 iface
->l3_dev
.cb
= interface_l3_dev_cb
;
768 iface
->ext_dev
.cb
= interface_ext_dev_cb
;
770 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
771 blob_data(config
), blob_len(config
));
773 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
774 proto_name
= blobmsg_data(cur
);
776 proto_attach_interface(iface
, proto_name
);
777 if (iface
->proto_handler
->flags
& PROTO_FLAG_FORCE_LINK_DEFAULT
)
780 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
781 iface
->force_link
= blobmsg_get_bool_default(tb
[IFACE_ATTR_FORCE_LINK
], force_link
);
782 iface
->proto_ip
.no_defaultroute
=
783 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
784 iface
->proto_ip
.no_dns
=
785 !blobmsg_get_bool_default(tb
[IFACE_ATTR_PEERDNS
], true);
787 if ((cur
= tb
[IFACE_ATTR_DNS
]))
788 interface_add_dns_server_list(&iface
->config_ip
, cur
);
790 if ((cur
= tb
[IFACE_ATTR_DNS_SEARCH
]))
791 interface_add_dns_search_list(&iface
->config_ip
, cur
);
793 if ((cur
= tb
[IFACE_ATTR_METRIC
]))
794 iface
->metric
= blobmsg_get_u32(cur
);
796 if ((cur
= tb
[IFACE_ATTR_IP6ASSIGN
]))
797 iface
->assignment_length
= blobmsg_get_u32(cur
);
800 iface
->assignment_iface_id_selection
= IFID_FIXED
;
801 iface
->assignment_fixed_iface_id
= in6addr_any
;
802 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
804 if ((cur
= tb
[IFACE_ATTR_IP6IFACEID
])) {
805 const char *ifaceid
= blobmsg_data(cur
);
806 if (!strcmp(ifaceid
, "random")) {
807 iface
->assignment_iface_id_selection
= IFID_RANDOM
;
809 else if (!strcmp(ifaceid
, "eui64")) {
810 iface
->assignment_iface_id_selection
= IFID_EUI64
;
813 /* we expect an IPv6 address with network id zero here -> fixed iface id
814 if we cannot parse -> revert to iface id 1 */
815 if (inet_pton(AF_INET6
,ifaceid
,&iface
->assignment_fixed_iface_id
) != 1 ||
816 iface
->assignment_fixed_iface_id
.s6_addr32
[0] != 0 ||
817 iface
->assignment_fixed_iface_id
.s6_addr32
[1] != 0) {
818 iface
->assignment_fixed_iface_id
= in6addr_any
;
819 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
820 netifd_log_message(L_WARNING
, "Failed to parse ip6ifaceid for interface '%s', \
821 falling back to iface id 1.\n", iface
->name
);
826 iface
->assignment_hint
= -1;
827 if ((cur
= tb
[IFACE_ATTR_IP6HINT
]))
828 iface
->assignment_hint
= strtol(blobmsg_get_string(cur
), NULL
, 16) &
829 ~((1 << (64 - iface
->assignment_length
)) - 1);
831 if ((cur
= tb
[IFACE_ATTR_IP6CLASS
]))
832 interface_add_assignment_classes(iface
, cur
);
835 if ((cur
= tb
[IFACE_ATTR_IP4TABLE
])) {
836 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip4table
))
837 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
840 if ((cur
= tb
[IFACE_ATTR_IP6TABLE
])) {
841 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip6table
))
842 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
845 iface
->proto_ip
.no_delegation
= !blobmsg_get_bool_default(tb
[IFACE_ATTR_DELEGATE
], true);
847 iface
->config_autostart
= iface
->autostart
;
851 void interface_set_dynamic(struct interface
*iface
)
853 iface
->dynamic
= true;
854 iface
->autostart
= true;
855 iface
->node
.version
= -1; // Don't delete on reload
858 static bool __interface_add(struct interface
*iface
, struct blob_attr
*config
, bool alias
)
860 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
861 struct blob_attr
*cur
;
863 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
864 blob_data(config
), blob_len(config
));
867 if ((cur
= tb
[IFACE_ATTR_INTERFACE
]))
868 iface
->parent_ifname
= blobmsg_data(cur
);
870 if (!iface
->parent_ifname
)
873 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
874 iface
->ifname
= blobmsg_data(cur
);
877 iface
->config
= config
;
878 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
883 interface_add(struct interface
*iface
, struct blob_attr
*config
)
885 __interface_add(iface
, config
, false);
889 interface_add_alias(struct interface
*iface
, struct blob_attr
*config
)
891 if (iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)
894 return __interface_add(iface
, config
, true);
898 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
900 bool enabled
= iface
->config_ip
.enabled
;
901 bool claimed
= iface
->l3_dev
.claimed
;
903 if (iface
->l3_dev
.dev
== dev
)
906 interface_ip_set_enabled(&iface
->config_ip
, false);
907 interface_ip_set_enabled(&iface
->proto_ip
, false);
908 interface_ip_flush(&iface
->proto_ip
);
909 device_add_user(&iface
->l3_dev
, dev
);
913 if (device_claim(&iface
->l3_dev
) < 0)
916 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
917 interface_ip_set_enabled(&iface
->proto_ip
, enabled
);
922 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
924 bool claimed
= iface
->l3_dev
.claimed
;
926 if (iface
->main_dev
.dev
== dev
)
929 interface_set_available(iface
, false);
930 device_add_user(&iface
->main_dev
, dev
);
932 interface_set_link_state(iface
, false);
937 if (device_claim(&iface
->l3_dev
) < 0)
941 if (!iface
->l3_dev
.dev
)
942 interface_set_l3_dev(iface
, dev
);
946 interface_remove_link(struct interface
*iface
, struct device
*dev
)
948 struct device
*mdev
= iface
->main_dev
.dev
;
950 if (mdev
&& mdev
->hotplug_ops
)
951 return mdev
->hotplug_ops
->del(mdev
, dev
);
953 if (dev
== iface
->ext_dev
.dev
)
954 device_remove_user(&iface
->ext_dev
);
956 if (!iface
->main_dev
.hotplug
)
957 return UBUS_STATUS_INVALID_ARGUMENT
;
959 if (dev
!= iface
->main_dev
.dev
)
960 return UBUS_STATUS_INVALID_ARGUMENT
;
962 interface_set_main_dev(iface
, NULL
);
967 interface_add_link(struct interface
*iface
, struct device
*dev
, bool link_ext
)
969 struct device
*mdev
= iface
->main_dev
.dev
;
974 if (iface
->main_dev
.hotplug
)
975 device_remove_user(&iface
->main_dev
);
978 if (mdev
->hotplug_ops
)
979 return mdev
->hotplug_ops
->add(mdev
, dev
);
981 return UBUS_STATUS_NOT_SUPPORTED
;
985 device_add_user(&iface
->ext_dev
, dev
);
987 interface_set_main_dev(iface
, dev
);
988 iface
->main_dev
.hotplug
= true;
993 interface_handle_link(struct interface
*iface
, const char *name
, bool add
, bool link_ext
)
1000 dev
= device_get(name
, add
? (link_ext
? 2 : 1) : 0);
1002 ret
= UBUS_STATUS_NOT_FOUND
;
1007 interface_set_device_config(iface
, dev
);
1008 device_set_present(dev
, true);
1010 ret
= interface_add_link(iface
, dev
, link_ext
);
1012 ret
= interface_remove_link(iface
, dev
);
1022 interface_set_up(struct interface
*iface
)
1026 iface
->autostart
= true;
1028 if (iface
->state
!= IFS_DOWN
)
1031 interface_clear_errors(iface
);
1032 if (!iface
->available
) {
1033 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
1037 if (iface
->main_dev
.dev
) {
1038 ret
= device_claim(&iface
->main_dev
);
1040 interface_check_state(iface
);
1043 ret
= __interface_set_up(iface
);
1049 interface_set_down(struct interface
*iface
)
1052 vlist_for_each_element(&interfaces
, iface
, node
)
1053 __interface_set_down(iface
, false);
1055 iface
->autostart
= false;
1056 __interface_set_down(iface
, false);
1063 interface_start_pending(void)
1065 struct interface
*iface
;
1067 vlist_for_each_element(&interfaces
, iface
, node
) {
1068 if (iface
->available
&& iface
->autostart
)
1069 interface_set_up(iface
);
1074 set_config_state(struct interface
*iface
, enum interface_config_state s
)
1076 iface
->config_state
= s
;
1077 if (iface
->state
== IFS_DOWN
)
1078 interface_handle_config_change(iface
);
1080 __interface_set_down(iface
, false);
1084 interface_update_start(struct interface
*iface
)
1087 interface_ip_update_start(&iface
->proto_ip
);
1091 interface_update_complete(struct interface
*iface
)
1093 interface_ip_update_complete(&iface
->proto_ip
);
1097 interface_replace_dns(struct interface_ip_settings
*new, struct interface_ip_settings
*old
)
1099 vlist_simple_replace(&new->dns_servers
, &old
->dns_servers
);
1100 vlist_simple_replace(&new->dns_search
, &old
->dns_search
);
1104 interface_device_config_changed(struct interface
*if_old
, struct interface
*if_new
)
1106 struct blob_attr
*ntb
[__DEV_ATTR_MAX
];
1107 struct blob_attr
*otb
[__DEV_ATTR_MAX
];
1108 struct device
*dev
= if_old
->main_dev
.dev
;
1109 unsigned long diff
= 0;
1111 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ 8);
1116 if (if_old
->device_config
!= if_new
->device_config
)
1119 if (!if_new
->device_config
)
1122 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb
,
1123 blob_data(if_old
->config
), blob_len(if_old
->config
));
1125 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, ntb
,
1126 blob_data(if_new
->config
), blob_len(if_new
->config
));
1128 uci_blob_diff(ntb
, otb
, &device_attr_list
, &diff
);
1133 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
1135 struct blob_attr
*old_config
= if_old
->config
;
1136 bool reload
= false, reload_ip
= false;
1138 #define FIELD_CHANGED_STR(field) \
1139 ((!!if_old->field != !!if_new->field) || \
1141 strcmp(if_old->field, if_new->field) != 0))
1143 if (FIELD_CHANGED_STR(parent_ifname
)) {
1144 if (if_old
->parent_iface
.iface
)
1145 interface_remove_user(&if_old
->parent_iface
);
1149 if (!reload
&& interface_device_config_changed(if_old
, if_new
))
1152 if (FIELD_CHANGED_STR(ifname
) ||
1153 if_old
->proto_handler
!= if_new
->proto_handler
)
1156 if (!if_old
->proto_handler
->config_params
)
1157 D(INTERFACE
, "No config parameters for interface '%s'\n",
1159 else if (!uci_blob_check_equal(if_old
->config
, if_new
->config
,
1160 if_old
->proto_handler
->config_params
))
1163 #define UPDATE(field, __var) ({ \
1164 bool __changed = (if_old->field != if_new->field); \
1165 if_old->field = if_new->field; \
1166 __var |= __changed; \
1169 if_old
->config
= if_new
->config
;
1170 if (if_old
->config_autostart
!= if_new
->config_autostart
) {
1171 if (if_old
->config_autostart
)
1174 if_old
->autostart
= if_new
->config_autostart
;
1177 if_old
->device_config
= if_new
->device_config
;
1178 if_old
->config_autostart
= if_new
->config_autostart
;
1179 if_old
->ifname
= if_new
->ifname
;
1180 if_old
->parent_ifname
= if_new
->parent_ifname
;
1181 if_old
->proto_handler
= if_new
->proto_handler
;
1182 if_old
->force_link
= if_new
->force_link
;
1184 if_old
->proto_ip
.no_dns
= if_new
->proto_ip
.no_dns
;
1185 interface_replace_dns(&if_old
->config_ip
, &if_new
->config_ip
);
1187 UPDATE(metric
, reload_ip
);
1188 UPDATE(proto_ip
.no_defaultroute
, reload_ip
);
1189 UPDATE(ip4table
, reload_ip
);
1190 UPDATE(ip6table
, reload_ip
);
1191 interface_merge_assignment_data(if_old
, if_new
);
1196 D(INTERFACE
, "Reload interface '%s' because of config changes\n",
1198 interface_clear_errors(if_old
);
1199 set_config_state(if_old
, IFC_RELOAD
);
1204 bool config_ip_enabled
= if_old
->config_ip
.enabled
;
1205 bool proto_ip_enabled
= if_old
->proto_ip
.enabled
;
1207 interface_ip_set_enabled(&if_old
->config_ip
, false);
1208 interface_ip_set_enabled(&if_old
->proto_ip
, false);
1209 interface_ip_set_enabled(&if_old
->proto_ip
, proto_ip_enabled
);
1210 interface_ip_set_enabled(&if_old
->config_ip
, config_ip_enabled
);
1213 interface_write_resolv_conf();
1214 if (if_old
->main_dev
.dev
)
1215 interface_check_state(if_old
);
1218 if_new
->config
= NULL
;
1219 interface_cleanup(if_new
);
1225 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
1226 struct vlist_node
*node_old
)
1228 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
1229 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
1231 if (node_old
&& node_new
) {
1232 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
1233 interface_change_config(if_old
, if_new
);
1234 } else if (node_old
) {
1235 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
1236 set_config_state(if_old
, IFC_REMOVE
);
1237 } else if (node_new
) {
1238 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
1239 proto_init_interface(if_new
, if_new
->config
);
1240 interface_claim_device(if_new
);
1241 netifd_ubus_add_interface(if_new
);
1247 interface_init_list(void)
1249 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
1250 interfaces
.keep_old
= true;
1251 interfaces
.no_delete
= true;