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_FORCE_LINK
,
50 static const struct blobmsg_policy iface_attrs
[IFACE_ATTR_MAX
] = {
51 [IFACE_ATTR_PROTO
] = { .name
= "proto", .type
= BLOBMSG_TYPE_STRING
},
52 [IFACE_ATTR_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
53 [IFACE_ATTR_AUTO
] = { .name
= "auto", .type
= BLOBMSG_TYPE_BOOL
},
54 [IFACE_ATTR_DEFAULTROUTE
] = { .name
= "defaultroute", .type
= BLOBMSG_TYPE_BOOL
},
55 [IFACE_ATTR_PEERDNS
] = { .name
= "peerdns", .type
= BLOBMSG_TYPE_BOOL
},
56 [IFACE_ATTR_METRIC
] = { .name
= "metric", .type
= BLOBMSG_TYPE_INT32
},
57 [IFACE_ATTR_DNS
] = { .name
= "dns", .type
= BLOBMSG_TYPE_ARRAY
},
58 [IFACE_ATTR_DNS_SEARCH
] = { .name
= "dns_search", .type
= BLOBMSG_TYPE_ARRAY
},
59 [IFACE_ATTR_INTERFACE
] = { .name
= "interface", .type
= BLOBMSG_TYPE_STRING
},
60 [IFACE_ATTR_IP6ASSIGN
] = { .name
= "ip6assign", .type
= BLOBMSG_TYPE_INT32
},
61 [IFACE_ATTR_IP6HINT
] = { .name
= "ip6hint", .type
= BLOBMSG_TYPE_STRING
},
62 [IFACE_ATTR_IP4TABLE
] = { .name
= "ip4table", .type
= BLOBMSG_TYPE_STRING
},
63 [IFACE_ATTR_IP6TABLE
] = { .name
= "ip6table", .type
= BLOBMSG_TYPE_STRING
},
64 [IFACE_ATTR_IP6CLASS
] = { .name
= "ip6class", .type
= BLOBMSG_TYPE_ARRAY
},
65 [IFACE_ATTR_DELEGATE
] = { .name
= "delegate", .type
= BLOBMSG_TYPE_BOOL
},
66 [IFACE_ATTR_FORCE_LINK
] = { .name
= "force_link", .type
= BLOBMSG_TYPE_BOOL
},
69 static const struct uci_blob_param_info iface_attr_info
[IFACE_ATTR_MAX
] = {
70 [IFACE_ATTR_DNS
] = { .type
= BLOBMSG_TYPE_STRING
},
71 [IFACE_ATTR_IP6CLASS
] = { .type
= BLOBMSG_TYPE_STRING
},
74 const struct uci_blob_param_list interface_attr_list
= {
75 .n_params
= IFACE_ATTR_MAX
,
76 .params
= iface_attrs
,
77 .info
= iface_attr_info
,
81 interface_clear_errors(struct interface
*iface
)
83 struct interface_error
*error
, *tmp
;
85 list_for_each_entry_safe(error
, tmp
, &iface
->errors
, list
) {
86 list_del(&error
->list
);
91 void interface_add_error(struct interface
*iface
, const char *subsystem
,
92 const char *code
, const char **data
, int n_data
)
94 struct interface_error
*error
;
97 char *dest
, *d_subsys
, *d_code
;
100 len
= n_data
* sizeof(char *);
101 datalen
= alloca(len
);
102 for (i
= 0; i
< n_data
; i
++) {
103 datalen
[i
] = strlen(data
[i
]) + 1;
108 error
= calloc_a(sizeof(*error
) + sizeof(char *) + len
,
109 &d_subsys
, subsystem
? strlen(subsystem
) + 1 : 0,
110 &d_code
, code
? strlen(code
) + 1 : 0);
114 list_add_tail(&error
->list
, &iface
->errors
);
116 dest
= (char *) &error
->data
[n_data
+ 1];
117 for (i
= 0; i
< n_data
; i
++) {
118 error
->data
[i
] = dest
;
119 memcpy(dest
, data
[i
], datalen
[i
]);
122 error
->data
[n_data
++] = NULL
;
125 error
->subsystem
= strcpy(d_subsys
, subsystem
);
128 error
->code
= strcpy(d_code
, code
);
132 interface_data_del(struct interface
*iface
, struct interface_data
*data
)
134 avl_delete(&iface
->data
, &data
->node
);
139 interface_data_flush(struct interface
*iface
)
141 struct interface_data
*d
, *tmp
;
143 avl_for_each_element_safe(&iface
->data
, d
, node
, tmp
)
144 interface_data_del(iface
, d
);
148 interface_add_data(struct interface
*iface
, const struct blob_attr
*data
)
150 struct interface_data
*n
, *o
;
152 if (!blobmsg_check_attr(data
, true))
153 return UBUS_STATUS_INVALID_ARGUMENT
;
155 const char *name
= blobmsg_name(data
);
156 unsigned len
= blob_pad_len(data
);
158 o
= avl_find_element(&iface
->data
, name
, o
, node
);
160 if (blob_pad_len(o
->data
) == len
&& !memcmp(o
->data
, data
, len
))
163 interface_data_del(iface
, o
);
166 n
= calloc(1, sizeof(*n
) + len
);
167 memcpy(n
->data
, data
, len
);
168 n
->node
.key
= blobmsg_name(n
->data
);
169 avl_insert(&iface
->data
, &n
->node
);
171 iface
->updated
|= IUF_DATA
;
176 interface_event(struct interface
*iface
, enum interface_event ev
)
178 struct interface_user
*dep
, *tmp
;
179 struct device
*adev
= NULL
;
181 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
182 dep
->cb(dep
, iface
, ev
);
184 list_for_each_entry_safe(dep
, tmp
, &iface_all_users
, list
)
185 dep
->cb(dep
, iface
, ev
);
189 adev
= iface
->l3_dev
.dev
;
192 alias_notify_device(iface
->name
, adev
);
200 interface_flush_state(struct interface
*iface
)
202 if (iface
->l3_dev
.dev
)
203 device_release(&iface
->l3_dev
);
204 interface_data_flush(iface
);
208 mark_interface_down(struct interface
*iface
)
210 enum interface_state state
= iface
->state
;
212 if (state
== IFS_DOWN
)
215 iface
->state
= IFS_DOWN
;
217 interface_event(iface
, IFEV_DOWN
);
218 interface_ip_set_enabled(&iface
->config_ip
, false);
219 interface_ip_flush(&iface
->proto_ip
);
220 interface_flush_state(iface
);
221 system_flush_routes();
225 __interface_set_down(struct interface
*iface
, bool force
)
227 enum interface_state state
= iface
->state
;
231 iface
->state
= IFS_TEARDOWN
;
233 interface_event(iface
, IFEV_DOWN
);
235 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, force
);
237 interface_flush_state(iface
);
240 vlist_delete(&interfaces
, &iface
->node
);
244 if (iface
->main_dev
.dev
)
245 device_release(&iface
->main_dev
);
253 __interface_set_up(struct interface
*iface
)
257 netifd_log_message(L_NOTICE
, "Interface '%s' is setting up now\n", iface
->name
);
259 iface
->state
= IFS_SETUP
;
260 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
262 mark_interface_down(iface
);
268 interface_check_state(struct interface
*iface
)
270 bool link_state
= iface
->link_state
|| iface
->force_link
;
272 switch (iface
->state
) {
274 if (!iface
->enabled
|| !link_state
) {
275 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
276 mark_interface_down(iface
);
280 if (!iface
->available
)
283 if (iface
->autostart
&& iface
->enabled
&& link_state
&& !config_init
)
284 __interface_set_up(iface
);
292 interface_set_enabled(struct interface
*iface
, bool new_state
)
294 if (iface
->enabled
== new_state
)
297 netifd_log_message(L_NOTICE
, "Interface '%s' is %s\n", iface
->name
, new_state
? "enabled" : "disabled");
298 iface
->enabled
= new_state
;
299 interface_check_state(iface
);
303 interface_set_link_state(struct interface
*iface
, bool new_state
)
305 if (iface
->link_state
== new_state
)
308 netifd_log_message(L_NOTICE
, "Interface '%s' has link connectivity %s\n", iface
->name
, new_state
? "" : "loss");
309 iface
->link_state
= new_state
;
310 interface_check_state(iface
);
314 interface_ext_cb(struct device_user
*dep
, enum device_event ev
)
316 if (ev
== DEV_EVENT_REMOVE
)
317 device_remove_user(dep
);
321 interface_cb(struct device_user
*dep
, enum device_event ev
)
323 struct interface
*iface
;
324 bool new_state
= false;
326 iface
= container_of(dep
, struct interface
, main_dev
);
330 case DEV_EVENT_REMOVE
:
331 interface_set_available(iface
, new_state
);
332 if (!new_state
&& dep
->dev
&& dep
->dev
->external
)
333 interface_set_main_dev(iface
, NULL
);
338 interface_set_enabled(iface
, new_state
);
340 case DEV_EVENT_LINK_UP
:
342 case DEV_EVENT_LINK_DOWN
:
343 interface_set_link_state(iface
, new_state
);
345 case DEV_EVENT_TOPO_CHANGE
:
346 interface_proto_event(iface
->proto
, PROTO_CMD_RENEW
, false);
354 interface_set_available(struct interface
*iface
, bool new_state
)
356 if (iface
->available
== new_state
)
359 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
360 iface
->available
= new_state
;
363 if (iface
->autostart
&& !config_init
)
364 interface_set_up(iface
);
366 __interface_set_down(iface
, true);
370 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
373 list_add(&dep
->list
, &iface_all_users
);
378 list_add(&dep
->list
, &iface
->users
);
379 if (iface
->state
== IFS_UP
)
380 dep
->cb(dep
, iface
, IFEV_UP
);
384 interface_remove_user(struct interface_user
*dep
)
386 list_del_init(&dep
->list
);
391 interface_add_assignment_classes(struct interface
*iface
, struct blob_attr
*list
)
393 struct blob_attr
*cur
;
396 blobmsg_for_each_attr(cur
, list
, rem
) {
397 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
400 if (!blobmsg_check_attr(cur
, NULL
))
403 struct interface_assignment_class
*c
= malloc(sizeof(*c
) + blobmsg_data_len(cur
));
404 memcpy(c
->name
, blobmsg_data(cur
), blobmsg_data_len(cur
));
405 list_add(&c
->head
, &iface
->assignment_classes
);
410 interface_clear_assignment_classes(struct interface
*iface
)
412 while (!list_empty(&iface
->assignment_classes
)) {
413 struct interface_assignment_class
*c
= list_first_entry(&iface
->assignment_classes
,
414 struct interface_assignment_class
, head
);
421 interface_merge_assignment_data(struct interface
*old
, struct interface
*new)
423 bool changed
= (old
->assignment_hint
!= new->assignment_hint
||
424 old
->assignment_length
!= new->assignment_length
||
425 list_empty(&old
->assignment_classes
) != list_empty(&new->assignment_classes
));
427 struct interface_assignment_class
*c
;
428 list_for_each_entry(c
, &new->assignment_classes
, head
) {
429 // Compare list entries one-by-one to see if there was a change
430 if (list_empty(&old
->assignment_classes
)) // The new list is longer
436 struct interface_assignment_class
*c_old
= list_first_entry(&old
->assignment_classes
,
437 struct interface_assignment_class
, head
);
439 if (strcmp(c_old
->name
, c
->name
)) // An entry didn't match
442 list_del(&c_old
->head
);
446 // The old list was longer than the new one or the last entry didn't match
447 if (!list_empty(&old
->assignment_classes
)) {
448 interface_clear_assignment_classes(old
);
452 list_splice_init(&new->assignment_classes
, &old
->assignment_classes
);
455 old
->assignment_hint
= new->assignment_hint
;
456 old
->assignment_length
= new->assignment_length
;
457 interface_refresh_assignments(true);
462 interface_alias_cb(struct interface_user
*dep
, struct interface
*iface
, enum interface_event ev
)
464 struct interface
*alias
= container_of(dep
, struct interface
, parent_iface
);
465 struct device
*dev
= iface
->l3_dev
.dev
;
472 interface_set_main_dev(alias
, dev
);
473 interface_set_available(alias
, true);
476 interface_set_available(alias
, false);
477 interface_set_main_dev(alias
, NULL
);
480 interface_remove_user(dep
);
489 interface_claim_device(struct interface
*iface
)
491 struct interface
*parent
;
492 struct device
*dev
= NULL
;
494 if (iface
->parent_iface
.iface
)
495 interface_remove_user(&iface
->parent_iface
);
497 if (iface
->parent_ifname
) {
498 parent
= vlist_find(&interfaces
, iface
->parent_ifname
, parent
, node
);
499 iface
->parent_iface
.cb
= interface_alias_cb
;
500 interface_add_user(&iface
->parent_iface
, parent
);
501 } else if (iface
->ifname
&&
502 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
503 dev
= device_get(iface
->ifname
, true);
504 if (dev
&& dev
->default_config
&& iface
->device_config
)
505 device_set_config(dev
, dev
->type
, iface
->config
);
507 dev
= iface
->ext_dev
.dev
;
511 interface_set_main_dev(iface
, dev
);
513 if (iface
->proto_handler
->flags
& PROTO_FLAG_INIT_AVAILABLE
)
514 interface_set_available(iface
, true);
518 interface_cleanup_state(struct interface
*iface
)
520 interface_set_available(iface
, false);
522 interface_flush_state(iface
);
523 interface_clear_errors(iface
);
524 interface_set_proto_state(iface
, NULL
);
526 interface_set_main_dev(iface
, NULL
);
527 interface_set_l3_dev(iface
, NULL
);
531 interface_cleanup(struct interface
*iface
)
533 struct interface_user
*dep
, *tmp
;
535 uloop_timeout_cancel(&iface
->remove_timer
);
536 device_remove_user(&iface
->ext_dev
);
538 if (iface
->parent_iface
.iface
)
539 interface_remove_user(&iface
->parent_iface
);
541 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
542 interface_remove_user(dep
);
544 interface_clear_assignment_classes(iface
);
545 interface_ip_flush(&iface
->config_ip
);
546 interface_cleanup_state(iface
);
550 interface_do_free(struct interface
*iface
)
552 interface_event(iface
, IFEV_FREE
);
553 interface_cleanup(iface
);
555 netifd_ubus_remove_interface(iface
);
556 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
561 interface_do_reload(struct interface
*iface
)
563 interface_event(iface
, IFEV_RELOAD
);
564 interface_cleanup_state(iface
);
565 proto_init_interface(iface
, iface
->config
);
566 interface_claim_device(iface
);
570 interface_handle_config_change(struct interface
*iface
)
572 enum interface_config_state state
= iface
->config_state
;
574 iface
->config_state
= IFC_NORMAL
;
579 interface_do_reload(iface
);
582 interface_do_free(iface
);
585 if (iface
->autostart
&& iface
->available
)
586 interface_set_up(iface
);
590 interface_proto_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
592 struct interface
*iface
= state
->iface
;
596 if (iface
->state
!= IFS_SETUP
) {
597 interface_event(iface
, IFEV_UPDATE
);
601 if (!iface
->l3_dev
.dev
)
602 interface_set_l3_dev(iface
, iface
->main_dev
.dev
);
604 interface_ip_set_enabled(&iface
->config_ip
, true);
605 system_flush_routes();
606 iface
->state
= IFS_UP
;
607 iface
->start_time
= system_get_rtime();
608 interface_event(iface
, IFEV_UP
);
609 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
612 if (iface
->state
== IFS_DOWN
)
615 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
616 mark_interface_down(iface
);
617 if (iface
->main_dev
.dev
)
618 device_release(&iface
->main_dev
);
619 if (iface
->l3_dev
.dev
)
620 device_remove_user(&iface
->l3_dev
);
621 interface_handle_config_change(iface
);
623 case IFPEV_LINK_LOST
:
624 if (iface
->state
!= IFS_UP
)
627 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
628 mark_interface_down(iface
);
629 iface
->state
= IFS_SETUP
;
635 interface_write_resolv_conf();
638 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
641 iface
->proto
->free(iface
->proto
);
644 iface
->state
= IFS_DOWN
;
645 iface
->proto
= state
;
649 state
->proto_event
= interface_proto_cb
;
650 state
->iface
= iface
;
654 interface_alloc(const char *name
, struct blob_attr
*config
)
656 struct interface
*iface
;
657 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
658 struct blob_attr
*cur
;
659 const char *proto_name
= NULL
;
661 bool force_link
= false;
663 iface
= calloc_a(sizeof(*iface
), &iface_name
, strlen(name
) + 1);
664 iface
->name
= strcpy(iface_name
, name
);
665 INIT_LIST_HEAD(&iface
->errors
);
666 INIT_LIST_HEAD(&iface
->users
);
667 INIT_LIST_HEAD(&iface
->hotplug_list
);
668 INIT_LIST_HEAD(&iface
->assignment_classes
);
669 interface_ip_init(iface
);
670 avl_init(&iface
->data
, avl_strcmp
, false, NULL
);
671 iface
->config_ip
.enabled
= false;
673 iface
->main_dev
.cb
= interface_cb
;
674 iface
->ext_dev
.cb
= interface_ext_cb
;
676 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
677 blob_data(config
), blob_len(config
));
679 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
680 proto_name
= blobmsg_data(cur
);
682 proto_attach_interface(iface
, proto_name
);
683 if (iface
->proto_handler
->flags
& PROTO_FLAG_FORCE_LINK_DEFAULT
)
686 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
687 iface
->force_link
= blobmsg_get_bool_default(tb
[IFACE_ATTR_FORCE_LINK
], force_link
);
688 iface
->proto_ip
.no_defaultroute
=
689 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
690 iface
->proto_ip
.no_dns
=
691 !blobmsg_get_bool_default(tb
[IFACE_ATTR_PEERDNS
], true);
693 if ((cur
= tb
[IFACE_ATTR_DNS
]))
694 interface_add_dns_server_list(&iface
->config_ip
, cur
);
696 if ((cur
= tb
[IFACE_ATTR_DNS_SEARCH
]))
697 interface_add_dns_search_list(&iface
->config_ip
, cur
);
699 if ((cur
= tb
[IFACE_ATTR_METRIC
]))
700 iface
->metric
= blobmsg_get_u32(cur
);
702 if ((cur
= tb
[IFACE_ATTR_IP6ASSIGN
]))
703 iface
->assignment_length
= blobmsg_get_u32(cur
);
705 iface
->assignment_hint
= -1;
706 if ((cur
= tb
[IFACE_ATTR_IP6HINT
]))
707 iface
->assignment_hint
= strtol(blobmsg_get_string(cur
), NULL
, 16) &
708 ~((1 << (64 - iface
->assignment_length
)) - 1);
710 if ((cur
= tb
[IFACE_ATTR_IP6CLASS
]))
711 interface_add_assignment_classes(iface
, cur
);
714 if ((cur
= tb
[IFACE_ATTR_IP4TABLE
])) {
715 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip4table
))
716 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
719 if ((cur
= tb
[IFACE_ATTR_IP6TABLE
])) {
720 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip6table
))
721 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
724 iface
->proto_ip
.no_delegation
= !blobmsg_get_bool_default(tb
[IFACE_ATTR_DELEGATE
], true);
726 iface
->config_autostart
= iface
->autostart
;
730 void interface_set_dynamic(struct interface
*iface
)
732 iface
->dynamic
= true;
733 iface
->autostart
= true;
734 iface
->node
.version
= -1; // Don't delete on reload
737 static bool __interface_add(struct interface
*iface
, struct blob_attr
*config
, bool alias
)
739 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
740 struct blob_attr
*cur
;
742 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
743 blob_data(config
), blob_len(config
));
746 if ((cur
= tb
[IFACE_ATTR_INTERFACE
]))
747 iface
->parent_ifname
= blobmsg_data(cur
);
749 if (!iface
->parent_ifname
)
752 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
753 iface
->ifname
= blobmsg_data(cur
);
757 iface
->config
= config
;
758 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
763 interface_add(struct interface
*iface
, struct blob_attr
*config
)
765 __interface_add(iface
, config
, false);
769 interface_add_alias(struct interface
*iface
, struct blob_attr
*config
)
771 if (iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)
774 return __interface_add(iface
, config
, true);
778 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
780 bool enabled
= iface
->config_ip
.enabled
;
781 bool claimed
= iface
->l3_dev
.claimed
;
783 if (iface
->l3_dev
.dev
== dev
)
786 interface_ip_set_enabled(&iface
->config_ip
, false);
787 interface_ip_flush(&iface
->proto_ip
);
788 device_add_user(&iface
->l3_dev
, dev
);
792 if (device_claim(&iface
->l3_dev
) < 0)
795 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
800 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
802 bool claimed
= iface
->l3_dev
.claimed
;
804 if (iface
->main_dev
.dev
== dev
)
807 interface_set_available(iface
, false);
808 device_add_user(&iface
->main_dev
, dev
);
810 interface_set_link_state(iface
, false);
815 if (device_claim(&iface
->l3_dev
) < 0)
819 if (!iface
->l3_dev
.dev
)
820 interface_set_l3_dev(iface
, dev
);
824 interface_remove_link(struct interface
*iface
, struct device
*dev
)
826 struct device
*mdev
= iface
->main_dev
.dev
;
828 if (mdev
&& mdev
->hotplug_ops
)
829 return mdev
->hotplug_ops
->del(mdev
, dev
);
831 if (dev
== iface
->ext_dev
.dev
)
832 device_remove_user(&iface
->ext_dev
);
834 if (!iface
->main_dev
.hotplug
)
835 return UBUS_STATUS_INVALID_ARGUMENT
;
837 if (dev
!= iface
->main_dev
.dev
)
838 return UBUS_STATUS_INVALID_ARGUMENT
;
840 interface_set_main_dev(iface
, NULL
);
845 interface_add_link(struct interface
*iface
, struct device
*dev
, bool link_ext
)
847 struct device
*mdev
= iface
->main_dev
.dev
;
852 if (iface
->main_dev
.hotplug
)
853 device_remove_user(&iface
->main_dev
);
856 if (mdev
->hotplug_ops
)
857 return mdev
->hotplug_ops
->add(mdev
, dev
);
859 return UBUS_STATUS_NOT_SUPPORTED
;
863 device_add_user(&iface
->ext_dev
, dev
);
865 interface_set_main_dev(iface
, dev
);
866 iface
->main_dev
.hotplug
= true;
871 interface_handle_link(struct interface
*iface
, const char *name
, bool add
, bool link_ext
)
878 dev
= device_get(name
, add
? (link_ext
? 2 : 1) : 0);
880 ret
= UBUS_STATUS_NOT_FOUND
;
885 device_set_present(dev
, true);
886 if (iface
->device_config
&& dev
->default_config
)
887 device_set_config(dev
, dev
->type
, iface
->config
);
889 system_if_apply_settings(dev
, &dev
->settings
, dev
->settings
.flags
);
890 ret
= interface_add_link(iface
, dev
, link_ext
);
892 ret
= interface_remove_link(iface
, dev
);
902 interface_set_up(struct interface
*iface
)
906 iface
->autostart
= true;
908 if (iface
->state
!= IFS_DOWN
)
911 interface_clear_errors(iface
);
912 if (!iface
->available
) {
913 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
917 if (iface
->main_dev
.dev
) {
918 ret
= device_claim(&iface
->main_dev
);
920 interface_check_state(iface
);
923 ret
= __interface_set_up(iface
);
929 interface_set_down(struct interface
*iface
)
932 vlist_for_each_element(&interfaces
, iface
, node
)
933 __interface_set_down(iface
, false);
935 iface
->autostart
= false;
936 __interface_set_down(iface
, false);
943 interface_start_pending(void)
945 struct interface
*iface
;
947 vlist_for_each_element(&interfaces
, iface
, node
) {
948 if (iface
->available
&& iface
->autostart
)
949 interface_set_up(iface
);
954 set_config_state(struct interface
*iface
, enum interface_config_state s
)
956 iface
->config_state
= s
;
957 if (iface
->state
== IFS_DOWN
)
958 interface_handle_config_change(iface
);
960 __interface_set_down(iface
, false);
964 interface_update_start(struct interface
*iface
)
967 interface_ip_update_start(&iface
->proto_ip
);
971 interface_update_complete(struct interface
*iface
)
973 interface_ip_update_complete(&iface
->proto_ip
);
977 interface_replace_dns(struct interface_ip_settings
*new, struct interface_ip_settings
*old
)
979 vlist_simple_replace(&new->dns_servers
, &old
->dns_servers
);
980 vlist_simple_replace(&new->dns_search
, &old
->dns_search
);
984 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
986 struct blob_attr
*old_config
= if_old
->config
;
987 bool reload
= false, reload_ip
= false;
989 #define FIELD_CHANGED_STR(field) \
990 ((!!if_old->field != !!if_new->field) || \
992 strcmp(if_old->field, if_new->field) != 0))
994 if (FIELD_CHANGED_STR(parent_ifname
)) {
995 if (if_old
->parent_iface
.iface
)
996 interface_remove_user(&if_old
->parent_iface
);
1000 if (FIELD_CHANGED_STR(ifname
) ||
1001 if_old
->proto_handler
!= if_new
->proto_handler
)
1004 if (!if_old
->proto_handler
->config_params
)
1005 D(INTERFACE
, "No config parameters for interface '%s'\n",
1007 else if (!uci_blob_check_equal(if_old
->config
, if_new
->config
,
1008 if_old
->proto_handler
->config_params
))
1011 #define UPDATE(field, __var) ({ \
1012 bool __changed = (if_old->field != if_new->field); \
1013 if_old->field = if_new->field; \
1014 __var |= __changed; \
1017 if_old
->config
= if_new
->config
;
1018 if (!if_old
->config_autostart
&& if_new
->config_autostart
)
1019 if_old
->autostart
= true;
1021 if_old
->device_config
= if_new
->device_config
;
1022 if_old
->config_autostart
= if_new
->config_autostart
;
1023 if_old
->ifname
= if_new
->ifname
;
1024 if_old
->parent_ifname
= if_new
->parent_ifname
;
1025 if_old
->proto_handler
= if_new
->proto_handler
;
1026 if_old
->force_link
= if_new
->force_link
;
1028 if_old
->proto_ip
.no_dns
= if_new
->proto_ip
.no_dns
;
1029 interface_replace_dns(&if_old
->config_ip
, &if_new
->config_ip
);
1031 UPDATE(metric
, reload_ip
);
1032 UPDATE(proto_ip
.no_defaultroute
, reload_ip
);
1033 UPDATE(ip4table
, reload_ip
);
1034 UPDATE(ip6table
, reload_ip
);
1035 interface_merge_assignment_data(if_old
, if_new
);
1040 D(INTERFACE
, "Reload interface '%s' because of config changes\n",
1042 interface_clear_errors(if_old
);
1043 set_config_state(if_old
, IFC_RELOAD
);
1048 interface_ip_set_enabled(&if_old
->config_ip
, false);
1049 interface_ip_set_enabled(&if_old
->proto_ip
, false);
1050 interface_ip_set_enabled(&if_old
->proto_ip
, if_new
->proto_ip
.enabled
);
1051 interface_ip_set_enabled(&if_old
->config_ip
, if_new
->config_ip
.enabled
);
1054 interface_write_resolv_conf();
1055 if (if_old
->main_dev
.dev
)
1056 interface_check_state(if_old
);
1059 if_new
->config
= NULL
;
1060 interface_cleanup(if_new
);
1066 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
1067 struct vlist_node
*node_old
)
1069 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
1070 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
1072 if (node_old
&& node_new
) {
1073 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
1074 interface_change_config(if_old
, if_new
);
1075 } else if (node_old
) {
1076 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
1077 set_config_state(if_old
, IFC_REMOVE
);
1078 } else if (node_new
) {
1079 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
1080 proto_init_interface(if_new
, if_new
->config
);
1081 interface_claim_device(if_new
);
1082 netifd_ubus_add_interface(if_new
);
1088 interface_init_list(void)
1090 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
1091 interfaces
.keep_old
= true;
1092 interfaces
.no_delete
= true;