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
);
192 memcpy(n
->data
, data
, len
);
193 n
->node
.key
= blobmsg_name(n
->data
);
194 avl_insert(&iface
->data
, &n
->node
);
196 iface
->updated
|= IUF_DATA
;
200 int interface_parse_data(struct interface
*iface
, const struct blob_attr
*attr
)
202 struct blob_attr
*cur
;
207 blob_for_each_attr(cur
, attr
, rem
) {
208 ret
= interface_add_data(iface
, cur
);
213 if (iface
->updated
&& iface
->state
== IFS_UP
)
214 interface_event(iface
, IFEV_UPDATE
);
220 interface_event(struct interface
*iface
, enum interface_event ev
)
222 struct interface_user
*dep
, *tmp
;
223 struct device
*adev
= NULL
;
225 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
226 dep
->cb(dep
, iface
, ev
);
228 list_for_each_entry_safe(dep
, tmp
, &iface_all_users
, list
)
229 dep
->cb(dep
, iface
, ev
);
233 interface_error_flush(iface
);
234 adev
= iface
->l3_dev
.dev
;
237 alias_notify_device(iface
->name
, adev
);
245 interface_flush_state(struct interface
*iface
)
247 if (iface
->l3_dev
.dev
)
248 device_release(&iface
->l3_dev
);
249 interface_data_flush(iface
);
253 mark_interface_down(struct interface
*iface
)
255 enum interface_state state
= iface
->state
;
257 if (state
== IFS_DOWN
)
260 iface
->state
= IFS_DOWN
;
262 interface_event(iface
, IFEV_DOWN
);
263 interface_ip_set_enabled(&iface
->config_ip
, false);
264 interface_ip_set_enabled(&iface
->proto_ip
, false);
265 interface_ip_flush(&iface
->proto_ip
);
266 interface_flush_state(iface
);
267 system_flush_routes();
271 __interface_set_down(struct interface
*iface
, bool force
)
273 enum interface_state state
= iface
->state
;
277 iface
->state
= IFS_TEARDOWN
;
279 interface_event(iface
, IFEV_DOWN
);
281 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, force
);
283 interface_flush_state(iface
);
287 if (iface
->main_dev
.dev
)
288 device_release(&iface
->main_dev
);
296 __interface_set_up(struct interface
*iface
)
300 netifd_log_message(L_NOTICE
, "Interface '%s' is setting up now\n", iface
->name
);
302 iface
->state
= IFS_SETUP
;
303 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
305 mark_interface_down(iface
);
311 interface_check_state(struct interface
*iface
)
313 bool link_state
= iface
->link_state
|| iface
->force_link
;
315 switch (iface
->state
) {
318 if (!iface
->enabled
|| !link_state
) {
319 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
320 mark_interface_down(iface
);
324 if (!iface
->available
)
327 if (iface
->autostart
&& iface
->enabled
&& link_state
&& !config_init
)
328 __interface_set_up(iface
);
336 interface_set_enabled(struct interface
*iface
, bool new_state
)
338 if (iface
->enabled
== new_state
)
341 netifd_log_message(L_NOTICE
, "Interface '%s' is %s\n", iface
->name
, new_state
? "enabled" : "disabled");
342 iface
->enabled
= new_state
;
343 interface_check_state(iface
);
347 interface_set_link_state(struct interface
*iface
, bool new_state
)
349 if (iface
->link_state
== new_state
)
352 netifd_log_message(L_NOTICE
, "Interface '%s' has link connectivity %s\n", iface
->name
, new_state
? "" : "loss");
353 iface
->link_state
= new_state
;
354 interface_check_state(iface
);
358 interface_ext_dev_cb(struct device_user
*dep
, enum device_event ev
)
360 if (ev
== DEV_EVENT_REMOVE
)
361 device_remove_user(dep
);
365 interface_main_dev_cb(struct device_user
*dep
, enum device_event ev
)
367 struct interface
*iface
;
368 bool new_state
= false;
370 iface
= container_of(dep
, struct interface
, main_dev
);
374 case DEV_EVENT_REMOVE
:
375 interface_set_available(iface
, new_state
);
376 if (!new_state
&& dep
->dev
&& dep
->dev
->external
)
377 interface_set_main_dev(iface
, NULL
);
382 interface_set_enabled(iface
, new_state
);
384 case DEV_EVENT_LINK_UP
:
386 case DEV_EVENT_LINK_DOWN
:
387 interface_set_link_state(iface
, new_state
);
389 case DEV_EVENT_TOPO_CHANGE
:
390 interface_proto_event(iface
->proto
, PROTO_CMD_RENEW
, false);
398 interface_l3_dev_cb(struct device_user
*dep
, enum device_event ev
)
400 struct interface
*iface
;
402 iface
= container_of(dep
, struct interface
, l3_dev
);
403 if (iface
->l3_dev
.dev
== iface
->main_dev
.dev
)
407 case DEV_EVENT_LINK_DOWN
:
408 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
416 interface_set_available(struct interface
*iface
, bool new_state
)
418 if (iface
->available
== new_state
)
421 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
422 iface
->available
= new_state
;
425 if (iface
->autostart
&& !config_init
)
426 interface_set_up(iface
);
428 __interface_set_down(iface
, true);
432 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
435 list_add(&dep
->list
, &iface_all_users
);
440 list_add(&dep
->list
, &iface
->users
);
441 if (iface
->state
== IFS_UP
)
442 dep
->cb(dep
, iface
, IFEV_UP
);
446 interface_remove_user(struct interface_user
*dep
)
448 list_del_init(&dep
->list
);
453 interface_add_assignment_classes(struct interface
*iface
, struct blob_attr
*list
)
455 struct blob_attr
*cur
;
458 blobmsg_for_each_attr(cur
, list
, rem
) {
459 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
462 if (!blobmsg_check_attr(cur
, NULL
))
465 struct interface_assignment_class
*c
= malloc(sizeof(*c
) + blobmsg_data_len(cur
));
466 memcpy(c
->name
, blobmsg_data(cur
), blobmsg_data_len(cur
));
467 list_add(&c
->head
, &iface
->assignment_classes
);
472 interface_clear_assignment_classes(struct interface
*iface
)
474 while (!list_empty(&iface
->assignment_classes
)) {
475 struct interface_assignment_class
*c
= list_first_entry(&iface
->assignment_classes
,
476 struct interface_assignment_class
, head
);
483 interface_merge_assignment_data(struct interface
*old
, struct interface
*new)
485 bool changed
= (old
->assignment_hint
!= new->assignment_hint
||
486 old
->assignment_length
!= new->assignment_length
||
487 old
->assignment_iface_id_selection
!= new->assignment_iface_id_selection
||
488 (old
->assignment_iface_id_selection
== IFID_FIXED
&&
489 memcmp(&old
->assignment_fixed_iface_id
, &new->assignment_fixed_iface_id
,
490 sizeof(old
->assignment_fixed_iface_id
))) ||
491 list_empty(&old
->assignment_classes
) != list_empty(&new->assignment_classes
));
493 struct interface_assignment_class
*c
;
494 list_for_each_entry(c
, &new->assignment_classes
, head
) {
495 // Compare list entries one-by-one to see if there was a change
496 if (list_empty(&old
->assignment_classes
)) // The new list is longer
502 struct interface_assignment_class
*c_old
= list_first_entry(&old
->assignment_classes
,
503 struct interface_assignment_class
, head
);
505 if (strcmp(c_old
->name
, c
->name
)) // An entry didn't match
508 list_del(&c_old
->head
);
512 // The old list was longer than the new one or the last entry didn't match
513 if (!list_empty(&old
->assignment_classes
)) {
514 interface_clear_assignment_classes(old
);
518 list_splice_init(&new->assignment_classes
, &old
->assignment_classes
);
521 old
->assignment_hint
= new->assignment_hint
;
522 old
->assignment_length
= new->assignment_length
;
523 old
->assignment_iface_id_selection
= new->assignment_iface_id_selection
;
524 old
->assignment_fixed_iface_id
= new->assignment_fixed_iface_id
;
525 interface_refresh_assignments(true);
530 interface_alias_cb(struct interface_user
*dep
, struct interface
*iface
, enum interface_event ev
)
532 struct interface
*alias
= container_of(dep
, struct interface
, parent_iface
);
533 struct device
*dev
= iface
->l3_dev
.dev
;
540 interface_set_main_dev(alias
, dev
);
541 interface_set_available(alias
, true);
544 interface_set_available(alias
, false);
545 interface_set_main_dev(alias
, NULL
);
548 interface_remove_user(dep
);
557 interface_set_device_config(struct interface
*iface
, struct device
*dev
)
559 if (!dev
|| !dev
->default_config
)
562 if (!iface
->device_config
&&
563 (!dev
->iface_config
|| dev
->config_iface
!= iface
))
566 dev
->config_iface
= iface
;
567 dev
->iface_config
= iface
->device_config
;
568 device_apply_config(dev
, dev
->type
, iface
->config
);
572 interface_claim_device(struct interface
*iface
)
574 struct interface
*parent
;
575 struct device
*dev
= NULL
;
577 if (iface
->parent_iface
.iface
)
578 interface_remove_user(&iface
->parent_iface
);
580 if (iface
->parent_ifname
) {
581 parent
= vlist_find(&interfaces
, iface
->parent_ifname
, parent
, node
);
582 iface
->parent_iface
.cb
= interface_alias_cb
;
583 interface_add_user(&iface
->parent_iface
, parent
);
584 } else if (iface
->ifname
&&
585 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
586 dev
= device_get(iface
->ifname
, true);
587 interface_set_device_config(iface
, dev
);
589 dev
= iface
->ext_dev
.dev
;
593 interface_set_main_dev(iface
, dev
);
595 if (iface
->proto_handler
->flags
& PROTO_FLAG_INIT_AVAILABLE
)
596 interface_set_available(iface
, true);
600 interface_cleanup_state(struct interface
*iface
)
602 interface_set_available(iface
, false);
604 interface_flush_state(iface
);
605 interface_clear_errors(iface
);
606 interface_set_proto_state(iface
, NULL
);
608 interface_set_main_dev(iface
, NULL
);
609 interface_set_l3_dev(iface
, NULL
);
613 interface_cleanup(struct interface
*iface
)
615 struct interface_user
*dep
, *tmp
;
617 uloop_timeout_cancel(&iface
->remove_timer
);
618 device_remove_user(&iface
->ext_dev
);
620 if (iface
->parent_iface
.iface
)
621 interface_remove_user(&iface
->parent_iface
);
623 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
624 interface_remove_user(dep
);
626 interface_clear_assignment_classes(iface
);
627 interface_ip_flush(&iface
->config_ip
);
628 interface_cleanup_state(iface
);
632 interface_do_free(struct interface
*iface
)
634 interface_event(iface
, IFEV_FREE
);
635 interface_cleanup(iface
);
637 netifd_ubus_remove_interface(iface
);
638 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
643 interface_do_reload(struct interface
*iface
)
645 interface_event(iface
, IFEV_RELOAD
);
646 interface_cleanup_state(iface
);
647 proto_init_interface(iface
, iface
->config
);
648 interface_claim_device(iface
);
652 interface_handle_config_change(struct interface
*iface
)
654 enum interface_config_state state
= iface
->config_state
;
656 iface
->config_state
= IFC_NORMAL
;
661 interface_do_reload(iface
);
664 interface_do_free(iface
);
667 if (iface
->autostart
&& iface
->available
)
668 interface_set_up(iface
);
669 else if (iface
->dynamic
)
670 set_config_state(iface
, IFC_REMOVE
);
674 interface_proto_event_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
676 struct interface
*iface
= state
->iface
;
680 if (iface
->state
!= IFS_SETUP
) {
681 interface_event(iface
, IFEV_UPDATE
);
685 if (!iface
->l3_dev
.dev
)
686 interface_set_l3_dev(iface
, iface
->main_dev
.dev
);
688 interface_ip_set_enabled(&iface
->config_ip
, true);
689 interface_ip_set_enabled(&iface
->proto_ip
, true);
690 system_flush_routes();
691 iface
->state
= IFS_UP
;
692 iface
->start_time
= system_get_rtime();
693 interface_event(iface
, IFEV_UP
);
694 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
697 if (iface
->state
== IFS_DOWN
)
700 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
701 mark_interface_down(iface
);
702 if (iface
->main_dev
.dev
)
703 device_release(&iface
->main_dev
);
704 if (iface
->l3_dev
.dev
)
705 device_remove_user(&iface
->l3_dev
);
706 interface_handle_config_change(iface
);
708 case IFPEV_LINK_LOST
:
709 if (iface
->state
!= IFS_UP
)
712 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
713 mark_interface_down(iface
);
714 iface
->state
= IFS_SETUP
;
720 interface_write_resolv_conf();
723 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
726 iface
->proto
->free(iface
->proto
);
729 iface
->state
= IFS_DOWN
;
730 iface
->proto
= state
;
734 state
->proto_event
= interface_proto_event_cb
;
735 state
->iface
= iface
;
739 interface_alloc(const char *name
, struct blob_attr
*config
)
741 struct interface
*iface
;
742 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
743 struct blob_attr
*cur
;
744 const char *proto_name
= NULL
;
746 bool force_link
= false;
748 iface
= calloc_a(sizeof(*iface
), &iface_name
, strlen(name
) + 1);
749 iface
->name
= strcpy(iface_name
, name
);
750 INIT_LIST_HEAD(&iface
->errors
);
751 INIT_LIST_HEAD(&iface
->users
);
752 INIT_LIST_HEAD(&iface
->hotplug_list
);
753 INIT_LIST_HEAD(&iface
->assignment_classes
);
754 interface_ip_init(iface
);
755 avl_init(&iface
->data
, avl_strcmp
, false, NULL
);
756 iface
->config_ip
.enabled
= false;
758 iface
->main_dev
.cb
= interface_main_dev_cb
;
759 iface
->l3_dev
.cb
= interface_l3_dev_cb
;
760 iface
->ext_dev
.cb
= interface_ext_dev_cb
;
762 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
763 blob_data(config
), blob_len(config
));
765 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
766 proto_name
= blobmsg_data(cur
);
768 proto_attach_interface(iface
, proto_name
);
769 if (iface
->proto_handler
->flags
& PROTO_FLAG_FORCE_LINK_DEFAULT
)
772 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
773 iface
->force_link
= blobmsg_get_bool_default(tb
[IFACE_ATTR_FORCE_LINK
], force_link
);
774 iface
->proto_ip
.no_defaultroute
=
775 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
776 iface
->proto_ip
.no_dns
=
777 !blobmsg_get_bool_default(tb
[IFACE_ATTR_PEERDNS
], true);
779 if ((cur
= tb
[IFACE_ATTR_DNS
]))
780 interface_add_dns_server_list(&iface
->config_ip
, cur
);
782 if ((cur
= tb
[IFACE_ATTR_DNS_SEARCH
]))
783 interface_add_dns_search_list(&iface
->config_ip
, cur
);
785 if ((cur
= tb
[IFACE_ATTR_METRIC
]))
786 iface
->metric
= blobmsg_get_u32(cur
);
788 if ((cur
= tb
[IFACE_ATTR_IP6ASSIGN
]))
789 iface
->assignment_length
= blobmsg_get_u32(cur
);
792 iface
->assignment_iface_id_selection
= IFID_FIXED
;
793 iface
->assignment_fixed_iface_id
= in6addr_any
;
794 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
796 if ((cur
= tb
[IFACE_ATTR_IP6IFACEID
])) {
797 const char *ifaceid
= blobmsg_data(cur
);
798 if (!strcmp(ifaceid
, "random")) {
799 iface
->assignment_iface_id_selection
= IFID_RANDOM
;
801 else if (!strcmp(ifaceid
, "eui64")) {
802 iface
->assignment_iface_id_selection
= IFID_EUI64
;
805 /* we expect an IPv6 address with network id zero here -> fixed iface id
806 if we cannot parse -> revert to iface id 1 */
807 if (inet_pton(AF_INET6
,ifaceid
,&iface
->assignment_fixed_iface_id
) != 1 ||
808 iface
->assignment_fixed_iface_id
.s6_addr32
[0] != 0 ||
809 iface
->assignment_fixed_iface_id
.s6_addr32
[1] != 0) {
810 iface
->assignment_fixed_iface_id
= in6addr_any
;
811 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
812 netifd_log_message(L_WARNING
, "Failed to parse ip6ifaceid for interface '%s', \
813 falling back to iface id 1.\n", iface
->name
);
818 iface
->assignment_hint
= -1;
819 if ((cur
= tb
[IFACE_ATTR_IP6HINT
]))
820 iface
->assignment_hint
= strtol(blobmsg_get_string(cur
), NULL
, 16) &
821 ~((1 << (64 - iface
->assignment_length
)) - 1);
823 if ((cur
= tb
[IFACE_ATTR_IP6CLASS
]))
824 interface_add_assignment_classes(iface
, cur
);
827 if ((cur
= tb
[IFACE_ATTR_IP4TABLE
])) {
828 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip4table
))
829 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
832 if ((cur
= tb
[IFACE_ATTR_IP6TABLE
])) {
833 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip6table
))
834 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
837 iface
->proto_ip
.no_delegation
= !blobmsg_get_bool_default(tb
[IFACE_ATTR_DELEGATE
], true);
839 iface
->config_autostart
= iface
->autostart
;
843 void interface_set_dynamic(struct interface
*iface
)
845 iface
->dynamic
= true;
846 iface
->autostart
= true;
847 iface
->node
.version
= -1; // Don't delete on reload
850 static bool __interface_add(struct interface
*iface
, struct blob_attr
*config
, bool alias
)
852 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
853 struct blob_attr
*cur
;
855 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
856 blob_data(config
), blob_len(config
));
859 if ((cur
= tb
[IFACE_ATTR_INTERFACE
]))
860 iface
->parent_ifname
= blobmsg_data(cur
);
862 if (!iface
->parent_ifname
)
865 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
866 iface
->ifname
= blobmsg_data(cur
);
869 iface
->config
= config
;
870 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
875 interface_add(struct interface
*iface
, struct blob_attr
*config
)
877 __interface_add(iface
, config
, false);
881 interface_add_alias(struct interface
*iface
, struct blob_attr
*config
)
883 if (iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)
886 return __interface_add(iface
, config
, true);
890 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
892 bool enabled
= iface
->config_ip
.enabled
;
893 bool claimed
= iface
->l3_dev
.claimed
;
895 if (iface
->l3_dev
.dev
== dev
)
898 interface_ip_set_enabled(&iface
->config_ip
, false);
899 interface_ip_set_enabled(&iface
->proto_ip
, false);
900 interface_ip_flush(&iface
->proto_ip
);
901 device_add_user(&iface
->l3_dev
, dev
);
905 if (device_claim(&iface
->l3_dev
) < 0)
908 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
909 interface_ip_set_enabled(&iface
->proto_ip
, enabled
);
914 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
916 bool claimed
= iface
->l3_dev
.claimed
;
918 if (iface
->main_dev
.dev
== dev
)
921 interface_set_available(iface
, false);
922 device_add_user(&iface
->main_dev
, dev
);
924 interface_set_link_state(iface
, false);
929 if (device_claim(&iface
->l3_dev
) < 0)
933 if (!iface
->l3_dev
.dev
)
934 interface_set_l3_dev(iface
, dev
);
938 interface_remove_link(struct interface
*iface
, struct device
*dev
)
940 struct device
*mdev
= iface
->main_dev
.dev
;
942 if (mdev
&& mdev
->hotplug_ops
)
943 return mdev
->hotplug_ops
->del(mdev
, dev
);
945 if (dev
== iface
->ext_dev
.dev
)
946 device_remove_user(&iface
->ext_dev
);
948 if (!iface
->main_dev
.hotplug
)
949 return UBUS_STATUS_INVALID_ARGUMENT
;
951 if (dev
!= iface
->main_dev
.dev
)
952 return UBUS_STATUS_INVALID_ARGUMENT
;
954 interface_set_main_dev(iface
, NULL
);
959 interface_add_link(struct interface
*iface
, struct device
*dev
, bool link_ext
)
961 struct device
*mdev
= iface
->main_dev
.dev
;
966 if (iface
->main_dev
.hotplug
)
967 device_remove_user(&iface
->main_dev
);
970 if (mdev
->hotplug_ops
)
971 return mdev
->hotplug_ops
->add(mdev
, dev
);
973 return UBUS_STATUS_NOT_SUPPORTED
;
977 device_add_user(&iface
->ext_dev
, dev
);
979 interface_set_main_dev(iface
, dev
);
980 iface
->main_dev
.hotplug
= true;
985 interface_handle_link(struct interface
*iface
, const char *name
, bool add
, bool link_ext
)
992 dev
= device_get(name
, add
? (link_ext
? 2 : 1) : 0);
994 ret
= UBUS_STATUS_NOT_FOUND
;
999 interface_set_device_config(iface
, dev
);
1000 device_set_present(dev
, true);
1002 ret
= interface_add_link(iface
, dev
, link_ext
);
1004 ret
= interface_remove_link(iface
, dev
);
1014 interface_set_up(struct interface
*iface
)
1018 iface
->autostart
= true;
1020 if (iface
->state
!= IFS_DOWN
)
1023 interface_clear_errors(iface
);
1024 if (!iface
->available
) {
1025 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
1029 if (iface
->main_dev
.dev
) {
1030 ret
= device_claim(&iface
->main_dev
);
1032 interface_check_state(iface
);
1035 ret
= __interface_set_up(iface
);
1041 interface_set_down(struct interface
*iface
)
1044 vlist_for_each_element(&interfaces
, iface
, node
)
1045 __interface_set_down(iface
, false);
1047 iface
->autostart
= false;
1048 __interface_set_down(iface
, false);
1055 interface_start_pending(void)
1057 struct interface
*iface
;
1059 vlist_for_each_element(&interfaces
, iface
, node
) {
1060 if (iface
->available
&& iface
->autostart
)
1061 interface_set_up(iface
);
1066 set_config_state(struct interface
*iface
, enum interface_config_state s
)
1068 iface
->config_state
= s
;
1069 if (iface
->state
== IFS_DOWN
)
1070 interface_handle_config_change(iface
);
1072 __interface_set_down(iface
, false);
1076 interface_update_start(struct interface
*iface
)
1079 interface_ip_update_start(&iface
->proto_ip
);
1083 interface_update_complete(struct interface
*iface
)
1085 interface_ip_update_complete(&iface
->proto_ip
);
1089 interface_replace_dns(struct interface_ip_settings
*new, struct interface_ip_settings
*old
)
1091 vlist_simple_replace(&new->dns_servers
, &old
->dns_servers
);
1092 vlist_simple_replace(&new->dns_search
, &old
->dns_search
);
1096 interface_device_config_changed(struct interface
*if_old
, struct interface
*if_new
)
1098 struct blob_attr
*ntb
[__DEV_ATTR_MAX
];
1099 struct blob_attr
*otb
[__DEV_ATTR_MAX
];
1100 struct device
*dev
= if_old
->main_dev
.dev
;
1101 unsigned long diff
= 0;
1103 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ 8);
1108 if (if_old
->device_config
!= if_new
->device_config
)
1111 if (!if_new
->device_config
)
1114 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb
,
1115 blob_data(if_old
->config
), blob_len(if_old
->config
));
1117 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, ntb
,
1118 blob_data(if_new
->config
), blob_len(if_new
->config
));
1120 uci_blob_diff(ntb
, otb
, &device_attr_list
, &diff
);
1125 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
1127 struct blob_attr
*old_config
= if_old
->config
;
1128 bool reload
= false, reload_ip
= false;
1130 #define FIELD_CHANGED_STR(field) \
1131 ((!!if_old->field != !!if_new->field) || \
1133 strcmp(if_old->field, if_new->field) != 0))
1135 if (FIELD_CHANGED_STR(parent_ifname
)) {
1136 if (if_old
->parent_iface
.iface
)
1137 interface_remove_user(&if_old
->parent_iface
);
1141 if (!reload
&& interface_device_config_changed(if_old
, if_new
))
1144 if (FIELD_CHANGED_STR(ifname
) ||
1145 if_old
->proto_handler
!= if_new
->proto_handler
)
1148 if (!if_old
->proto_handler
->config_params
)
1149 D(INTERFACE
, "No config parameters for interface '%s'\n",
1151 else if (!uci_blob_check_equal(if_old
->config
, if_new
->config
,
1152 if_old
->proto_handler
->config_params
))
1155 #define UPDATE(field, __var) ({ \
1156 bool __changed = (if_old->field != if_new->field); \
1157 if_old->field = if_new->field; \
1158 __var |= __changed; \
1161 if_old
->config
= if_new
->config
;
1162 if (if_old
->config_autostart
!= if_new
->config_autostart
) {
1163 if (if_old
->config_autostart
)
1166 if_old
->autostart
= if_new
->config_autostart
;
1169 if_old
->device_config
= if_new
->device_config
;
1170 if_old
->config_autostart
= if_new
->config_autostart
;
1171 if_old
->ifname
= if_new
->ifname
;
1172 if_old
->parent_ifname
= if_new
->parent_ifname
;
1173 if_old
->proto_handler
= if_new
->proto_handler
;
1174 if_old
->force_link
= if_new
->force_link
;
1176 if_old
->proto_ip
.no_dns
= if_new
->proto_ip
.no_dns
;
1177 interface_replace_dns(&if_old
->config_ip
, &if_new
->config_ip
);
1179 UPDATE(metric
, reload_ip
);
1180 UPDATE(proto_ip
.no_defaultroute
, reload_ip
);
1181 UPDATE(ip4table
, reload_ip
);
1182 UPDATE(ip6table
, reload_ip
);
1183 interface_merge_assignment_data(if_old
, if_new
);
1188 D(INTERFACE
, "Reload interface '%s' because of config changes\n",
1190 interface_clear_errors(if_old
);
1191 set_config_state(if_old
, IFC_RELOAD
);
1196 bool config_ip_enabled
= if_old
->config_ip
.enabled
;
1197 bool proto_ip_enabled
= if_old
->proto_ip
.enabled
;
1199 interface_ip_set_enabled(&if_old
->config_ip
, false);
1200 interface_ip_set_enabled(&if_old
->proto_ip
, false);
1201 interface_ip_set_enabled(&if_old
->proto_ip
, proto_ip_enabled
);
1202 interface_ip_set_enabled(&if_old
->config_ip
, config_ip_enabled
);
1205 interface_write_resolv_conf();
1206 if (if_old
->main_dev
.dev
)
1207 interface_check_state(if_old
);
1210 if_new
->config
= NULL
;
1211 interface_cleanup(if_new
);
1217 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
1218 struct vlist_node
*node_old
)
1220 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
1221 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
1223 if (node_old
&& node_new
) {
1224 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
1225 interface_change_config(if_old
, if_new
);
1226 } else if (node_old
) {
1227 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
1228 set_config_state(if_old
, IFC_REMOVE
);
1229 } else if (node_new
) {
1230 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
1231 proto_init_interface(if_new
, if_new
->config
);
1232 interface_claim_device(if_new
);
1233 netifd_ubus_add_interface(if_new
);
1239 interface_init_list(void)
1241 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
1242 interfaces
.keep_old
= true;
1243 interfaces
.no_delete
= true;