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
->state
= IFS_DOWN
;
265 interface_event(iface
, IFEV_DOWN
);
266 interface_ip_set_enabled(&iface
->config_ip
, false);
267 interface_ip_set_enabled(&iface
->proto_ip
, false);
268 interface_ip_flush(&iface
->proto_ip
);
269 interface_flush_state(iface
);
270 system_flush_routes();
274 __interface_set_down(struct interface
*iface
, bool force
)
276 enum interface_state state
= iface
->state
;
280 iface
->state
= IFS_TEARDOWN
;
282 interface_event(iface
, IFEV_DOWN
);
284 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, force
);
286 interface_flush_state(iface
);
290 if (iface
->main_dev
.dev
)
291 device_release(&iface
->main_dev
);
299 __interface_set_up(struct interface
*iface
)
303 netifd_log_message(L_NOTICE
, "Interface '%s' is setting up now\n", iface
->name
);
305 iface
->state
= IFS_SETUP
;
306 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
308 mark_interface_down(iface
);
314 interface_check_state(struct interface
*iface
)
316 bool link_state
= iface
->link_state
|| iface
->force_link
;
318 switch (iface
->state
) {
321 if (!iface
->enabled
|| !link_state
) {
322 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
323 mark_interface_down(iface
);
327 if (!iface
->available
)
330 if (iface
->autostart
&& iface
->enabled
&& link_state
&& !config_init
)
331 __interface_set_up(iface
);
339 interface_set_enabled(struct interface
*iface
, bool new_state
)
341 if (iface
->enabled
== new_state
)
344 netifd_log_message(L_NOTICE
, "Interface '%s' is %s\n", iface
->name
, new_state
? "enabled" : "disabled");
345 iface
->enabled
= new_state
;
346 interface_check_state(iface
);
350 interface_set_link_state(struct interface
*iface
, bool new_state
)
352 if (iface
->link_state
== new_state
)
355 netifd_log_message(L_NOTICE
, "Interface '%s' has link connectivity %s\n", iface
->name
, new_state
? "" : "loss");
356 iface
->link_state
= new_state
;
357 interface_check_state(iface
);
361 interface_ext_dev_cb(struct device_user
*dep
, enum device_event ev
)
363 if (ev
== DEV_EVENT_REMOVE
)
364 device_remove_user(dep
);
368 interface_main_dev_cb(struct device_user
*dep
, enum device_event ev
)
370 struct interface
*iface
;
371 bool new_state
= false;
373 iface
= container_of(dep
, struct interface
, main_dev
);
377 case DEV_EVENT_REMOVE
:
378 interface_set_available(iface
, new_state
);
379 if (!new_state
&& dep
->dev
&& dep
->dev
->external
)
380 interface_set_main_dev(iface
, NULL
);
385 interface_set_enabled(iface
, new_state
);
387 case DEV_EVENT_LINK_UP
:
389 case DEV_EVENT_LINK_DOWN
:
390 interface_set_link_state(iface
, new_state
);
392 case DEV_EVENT_TOPO_CHANGE
:
393 interface_proto_event(iface
->proto
, PROTO_CMD_RENEW
, false);
401 interface_l3_dev_cb(struct device_user
*dep
, enum device_event ev
)
403 struct interface
*iface
;
405 iface
= container_of(dep
, struct interface
, l3_dev
);
406 if (iface
->l3_dev
.dev
== iface
->main_dev
.dev
)
410 case DEV_EVENT_LINK_DOWN
:
411 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
419 interface_set_available(struct interface
*iface
, bool new_state
)
421 if (iface
->available
== new_state
)
424 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
425 iface
->available
= new_state
;
428 if (iface
->autostart
&& !config_init
)
429 interface_set_up(iface
);
431 __interface_set_down(iface
, true);
435 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
438 list_add(&dep
->list
, &iface_all_users
);
443 list_add(&dep
->list
, &iface
->users
);
444 if (iface
->state
== IFS_UP
)
445 dep
->cb(dep
, iface
, IFEV_UP
);
449 interface_remove_user(struct interface_user
*dep
)
451 list_del_init(&dep
->list
);
456 interface_add_assignment_classes(struct interface
*iface
, struct blob_attr
*list
)
458 struct blob_attr
*cur
;
461 blobmsg_for_each_attr(cur
, list
, rem
) {
462 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
465 if (!blobmsg_check_attr(cur
, NULL
))
468 struct interface_assignment_class
*c
= malloc(sizeof(*c
) + blobmsg_data_len(cur
));
469 memcpy(c
->name
, blobmsg_data(cur
), blobmsg_data_len(cur
));
470 list_add(&c
->head
, &iface
->assignment_classes
);
475 interface_clear_assignment_classes(struct interface
*iface
)
477 while (!list_empty(&iface
->assignment_classes
)) {
478 struct interface_assignment_class
*c
= list_first_entry(&iface
->assignment_classes
,
479 struct interface_assignment_class
, head
);
486 interface_merge_assignment_data(struct interface
*old
, struct interface
*new)
488 bool changed
= (old
->assignment_hint
!= new->assignment_hint
||
489 old
->assignment_length
!= new->assignment_length
||
490 old
->assignment_iface_id_selection
!= new->assignment_iface_id_selection
||
491 (old
->assignment_iface_id_selection
== IFID_FIXED
&&
492 memcmp(&old
->assignment_fixed_iface_id
, &new->assignment_fixed_iface_id
,
493 sizeof(old
->assignment_fixed_iface_id
))) ||
494 list_empty(&old
->assignment_classes
) != list_empty(&new->assignment_classes
));
496 struct interface_assignment_class
*c
;
497 list_for_each_entry(c
, &new->assignment_classes
, head
) {
498 // Compare list entries one-by-one to see if there was a change
499 if (list_empty(&old
->assignment_classes
)) // The new list is longer
505 struct interface_assignment_class
*c_old
= list_first_entry(&old
->assignment_classes
,
506 struct interface_assignment_class
, head
);
508 if (strcmp(c_old
->name
, c
->name
)) // An entry didn't match
511 list_del(&c_old
->head
);
515 // The old list was longer than the new one or the last entry didn't match
516 if (!list_empty(&old
->assignment_classes
)) {
517 interface_clear_assignment_classes(old
);
521 list_splice_init(&new->assignment_classes
, &old
->assignment_classes
);
524 old
->assignment_hint
= new->assignment_hint
;
525 old
->assignment_length
= new->assignment_length
;
526 old
->assignment_iface_id_selection
= new->assignment_iface_id_selection
;
527 old
->assignment_fixed_iface_id
= new->assignment_fixed_iface_id
;
528 interface_refresh_assignments(true);
533 interface_alias_cb(struct interface_user
*dep
, struct interface
*iface
, enum interface_event ev
)
535 struct interface
*alias
= container_of(dep
, struct interface
, parent_iface
);
536 struct device
*dev
= iface
->l3_dev
.dev
;
543 interface_set_main_dev(alias
, dev
);
544 interface_set_available(alias
, true);
547 interface_set_available(alias
, false);
548 interface_set_main_dev(alias
, NULL
);
551 interface_remove_user(dep
);
560 interface_set_device_config(struct interface
*iface
, struct device
*dev
)
562 if (!dev
|| !dev
->default_config
)
565 if (!iface
->device_config
&&
566 (!dev
->iface_config
|| dev
->config_iface
!= iface
))
569 dev
->config_iface
= iface
;
570 dev
->iface_config
= iface
->device_config
;
571 device_apply_config(dev
, dev
->type
, iface
->config
);
575 interface_claim_device(struct interface
*iface
)
577 struct interface
*parent
;
578 struct device
*dev
= NULL
;
580 if (iface
->parent_iface
.iface
)
581 interface_remove_user(&iface
->parent_iface
);
583 if (iface
->parent_ifname
) {
584 parent
= vlist_find(&interfaces
, iface
->parent_ifname
, parent
, node
);
585 iface
->parent_iface
.cb
= interface_alias_cb
;
586 interface_add_user(&iface
->parent_iface
, parent
);
587 } else if (iface
->ifname
&&
588 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
589 dev
= device_get(iface
->ifname
, true);
590 interface_set_device_config(iface
, dev
);
592 dev
= iface
->ext_dev
.dev
;
596 interface_set_main_dev(iface
, dev
);
598 if (iface
->proto_handler
->flags
& PROTO_FLAG_INIT_AVAILABLE
)
599 interface_set_available(iface
, true);
603 interface_cleanup_state(struct interface
*iface
)
605 interface_set_available(iface
, false);
607 interface_flush_state(iface
);
608 interface_clear_errors(iface
);
609 interface_set_proto_state(iface
, NULL
);
611 interface_set_main_dev(iface
, NULL
);
612 interface_set_l3_dev(iface
, NULL
);
616 interface_cleanup(struct interface
*iface
)
618 struct interface_user
*dep
, *tmp
;
620 uloop_timeout_cancel(&iface
->remove_timer
);
621 device_remove_user(&iface
->ext_dev
);
623 if (iface
->parent_iface
.iface
)
624 interface_remove_user(&iface
->parent_iface
);
626 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
627 interface_remove_user(dep
);
629 interface_clear_assignment_classes(iface
);
630 interface_ip_flush(&iface
->config_ip
);
631 interface_cleanup_state(iface
);
635 interface_do_free(struct interface
*iface
)
637 interface_event(iface
, IFEV_FREE
);
638 interface_cleanup(iface
);
640 netifd_ubus_remove_interface(iface
);
641 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
646 interface_do_reload(struct interface
*iface
)
648 interface_event(iface
, IFEV_RELOAD
);
649 interface_cleanup_state(iface
);
650 proto_init_interface(iface
, iface
->config
);
651 interface_claim_device(iface
);
655 interface_handle_config_change(struct interface
*iface
)
657 enum interface_config_state state
= iface
->config_state
;
659 iface
->config_state
= IFC_NORMAL
;
664 interface_do_reload(iface
);
667 interface_do_free(iface
);
670 if (iface
->autostart
&& iface
->available
)
671 interface_set_up(iface
);
672 else if (iface
->dynamic
)
673 set_config_state(iface
, IFC_REMOVE
);
677 interface_proto_event_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
679 struct interface
*iface
= state
->iface
;
683 if (iface
->state
!= IFS_SETUP
) {
684 interface_event(iface
, IFEV_UPDATE
);
688 if (!iface
->l3_dev
.dev
)
689 interface_set_l3_dev(iface
, iface
->main_dev
.dev
);
691 interface_ip_set_enabled(&iface
->config_ip
, true);
692 interface_ip_set_enabled(&iface
->proto_ip
, true);
693 system_flush_routes();
694 iface
->state
= IFS_UP
;
695 iface
->start_time
= system_get_rtime();
696 interface_event(iface
, IFEV_UP
);
697 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
700 if (iface
->state
== IFS_DOWN
)
703 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
704 mark_interface_down(iface
);
705 if (iface
->main_dev
.dev
)
706 device_release(&iface
->main_dev
);
707 if (iface
->l3_dev
.dev
)
708 device_remove_user(&iface
->l3_dev
);
709 interface_handle_config_change(iface
);
711 case IFPEV_LINK_LOST
:
712 if (iface
->state
!= IFS_UP
)
715 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
716 mark_interface_down(iface
);
717 iface
->state
= IFS_SETUP
;
723 interface_write_resolv_conf();
726 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
729 iface
->proto
->free(iface
->proto
);
732 iface
->state
= IFS_DOWN
;
733 iface
->proto
= state
;
737 state
->proto_event
= interface_proto_event_cb
;
738 state
->iface
= iface
;
742 interface_alloc(const char *name
, struct blob_attr
*config
)
744 struct interface
*iface
;
745 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
746 struct blob_attr
*cur
;
747 const char *proto_name
= NULL
;
749 bool force_link
= false;
751 iface
= calloc_a(sizeof(*iface
), &iface_name
, strlen(name
) + 1);
752 iface
->name
= strcpy(iface_name
, name
);
753 INIT_LIST_HEAD(&iface
->errors
);
754 INIT_LIST_HEAD(&iface
->users
);
755 INIT_LIST_HEAD(&iface
->hotplug_list
);
756 INIT_LIST_HEAD(&iface
->assignment_classes
);
757 interface_ip_init(iface
);
758 avl_init(&iface
->data
, avl_strcmp
, false, NULL
);
759 iface
->config_ip
.enabled
= false;
761 iface
->main_dev
.cb
= interface_main_dev_cb
;
762 iface
->l3_dev
.cb
= interface_l3_dev_cb
;
763 iface
->ext_dev
.cb
= interface_ext_dev_cb
;
765 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
766 blob_data(config
), blob_len(config
));
768 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
769 proto_name
= blobmsg_data(cur
);
771 proto_attach_interface(iface
, proto_name
);
772 if (iface
->proto_handler
->flags
& PROTO_FLAG_FORCE_LINK_DEFAULT
)
775 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
776 iface
->force_link
= blobmsg_get_bool_default(tb
[IFACE_ATTR_FORCE_LINK
], force_link
);
777 iface
->proto_ip
.no_defaultroute
=
778 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
779 iface
->proto_ip
.no_dns
=
780 !blobmsg_get_bool_default(tb
[IFACE_ATTR_PEERDNS
], true);
782 if ((cur
= tb
[IFACE_ATTR_DNS
]))
783 interface_add_dns_server_list(&iface
->config_ip
, cur
);
785 if ((cur
= tb
[IFACE_ATTR_DNS_SEARCH
]))
786 interface_add_dns_search_list(&iface
->config_ip
, cur
);
788 if ((cur
= tb
[IFACE_ATTR_METRIC
]))
789 iface
->metric
= blobmsg_get_u32(cur
);
791 if ((cur
= tb
[IFACE_ATTR_IP6ASSIGN
]))
792 iface
->assignment_length
= blobmsg_get_u32(cur
);
795 iface
->assignment_iface_id_selection
= IFID_FIXED
;
796 iface
->assignment_fixed_iface_id
= in6addr_any
;
797 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
799 if ((cur
= tb
[IFACE_ATTR_IP6IFACEID
])) {
800 const char *ifaceid
= blobmsg_data(cur
);
801 if (!strcmp(ifaceid
, "random")) {
802 iface
->assignment_iface_id_selection
= IFID_RANDOM
;
804 else if (!strcmp(ifaceid
, "eui64")) {
805 iface
->assignment_iface_id_selection
= IFID_EUI64
;
808 /* we expect an IPv6 address with network id zero here -> fixed iface id
809 if we cannot parse -> revert to iface id 1 */
810 if (inet_pton(AF_INET6
,ifaceid
,&iface
->assignment_fixed_iface_id
) != 1 ||
811 iface
->assignment_fixed_iface_id
.s6_addr32
[0] != 0 ||
812 iface
->assignment_fixed_iface_id
.s6_addr32
[1] != 0) {
813 iface
->assignment_fixed_iface_id
= in6addr_any
;
814 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
815 netifd_log_message(L_WARNING
, "Failed to parse ip6ifaceid for interface '%s', \
816 falling back to iface id 1.\n", iface
->name
);
821 iface
->assignment_hint
= -1;
822 if ((cur
= tb
[IFACE_ATTR_IP6HINT
]))
823 iface
->assignment_hint
= strtol(blobmsg_get_string(cur
), NULL
, 16) &
824 ~((1 << (64 - iface
->assignment_length
)) - 1);
826 if ((cur
= tb
[IFACE_ATTR_IP6CLASS
]))
827 interface_add_assignment_classes(iface
, cur
);
830 if ((cur
= tb
[IFACE_ATTR_IP4TABLE
])) {
831 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip4table
))
832 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
835 if ((cur
= tb
[IFACE_ATTR_IP6TABLE
])) {
836 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip6table
))
837 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
840 iface
->proto_ip
.no_delegation
= !blobmsg_get_bool_default(tb
[IFACE_ATTR_DELEGATE
], true);
842 iface
->config_autostart
= iface
->autostart
;
846 void interface_set_dynamic(struct interface
*iface
)
848 iface
->dynamic
= true;
849 iface
->autostart
= true;
850 iface
->node
.version
= -1; // Don't delete on reload
853 static bool __interface_add(struct interface
*iface
, struct blob_attr
*config
, bool alias
)
855 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
856 struct blob_attr
*cur
;
858 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
859 blob_data(config
), blob_len(config
));
862 if ((cur
= tb
[IFACE_ATTR_INTERFACE
]))
863 iface
->parent_ifname
= blobmsg_data(cur
);
865 if (!iface
->parent_ifname
)
868 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
869 iface
->ifname
= blobmsg_data(cur
);
872 iface
->config
= config
;
873 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
878 interface_add(struct interface
*iface
, struct blob_attr
*config
)
880 __interface_add(iface
, config
, false);
884 interface_add_alias(struct interface
*iface
, struct blob_attr
*config
)
886 if (iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)
889 return __interface_add(iface
, config
, true);
893 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
895 bool enabled
= iface
->config_ip
.enabled
;
896 bool claimed
= iface
->l3_dev
.claimed
;
898 if (iface
->l3_dev
.dev
== dev
)
901 interface_ip_set_enabled(&iface
->config_ip
, false);
902 interface_ip_set_enabled(&iface
->proto_ip
, false);
903 interface_ip_flush(&iface
->proto_ip
);
904 device_add_user(&iface
->l3_dev
, dev
);
908 if (device_claim(&iface
->l3_dev
) < 0)
911 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
912 interface_ip_set_enabled(&iface
->proto_ip
, enabled
);
917 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
919 bool claimed
= iface
->l3_dev
.claimed
;
921 if (iface
->main_dev
.dev
== dev
)
924 interface_set_available(iface
, false);
925 device_add_user(&iface
->main_dev
, dev
);
927 interface_set_link_state(iface
, false);
932 if (device_claim(&iface
->l3_dev
) < 0)
936 if (!iface
->l3_dev
.dev
)
937 interface_set_l3_dev(iface
, dev
);
941 interface_remove_link(struct interface
*iface
, struct device
*dev
)
943 struct device
*mdev
= iface
->main_dev
.dev
;
945 if (mdev
&& mdev
->hotplug_ops
)
946 return mdev
->hotplug_ops
->del(mdev
, dev
);
948 if (dev
== iface
->ext_dev
.dev
)
949 device_remove_user(&iface
->ext_dev
);
951 if (!iface
->main_dev
.hotplug
)
952 return UBUS_STATUS_INVALID_ARGUMENT
;
954 if (dev
!= iface
->main_dev
.dev
)
955 return UBUS_STATUS_INVALID_ARGUMENT
;
957 interface_set_main_dev(iface
, NULL
);
962 interface_add_link(struct interface
*iface
, struct device
*dev
, bool link_ext
)
964 struct device
*mdev
= iface
->main_dev
.dev
;
969 if (iface
->main_dev
.hotplug
)
970 device_remove_user(&iface
->main_dev
);
973 if (mdev
->hotplug_ops
)
974 return mdev
->hotplug_ops
->add(mdev
, dev
);
976 return UBUS_STATUS_NOT_SUPPORTED
;
980 device_add_user(&iface
->ext_dev
, dev
);
982 interface_set_main_dev(iface
, dev
);
983 iface
->main_dev
.hotplug
= true;
988 interface_handle_link(struct interface
*iface
, const char *name
, bool add
, bool link_ext
)
995 dev
= device_get(name
, add
? (link_ext
? 2 : 1) : 0);
997 ret
= UBUS_STATUS_NOT_FOUND
;
1002 interface_set_device_config(iface
, dev
);
1003 device_set_present(dev
, true);
1005 ret
= interface_add_link(iface
, dev
, link_ext
);
1007 ret
= interface_remove_link(iface
, dev
);
1017 interface_set_up(struct interface
*iface
)
1021 iface
->autostart
= true;
1023 if (iface
->state
!= IFS_DOWN
)
1026 interface_clear_errors(iface
);
1027 if (!iface
->available
) {
1028 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
1032 if (iface
->main_dev
.dev
) {
1033 ret
= device_claim(&iface
->main_dev
);
1035 interface_check_state(iface
);
1038 ret
= __interface_set_up(iface
);
1044 interface_set_down(struct interface
*iface
)
1047 vlist_for_each_element(&interfaces
, iface
, node
)
1048 __interface_set_down(iface
, false);
1050 iface
->autostart
= false;
1051 __interface_set_down(iface
, false);
1058 interface_start_pending(void)
1060 struct interface
*iface
;
1062 vlist_for_each_element(&interfaces
, iface
, node
) {
1063 if (iface
->available
&& iface
->autostart
)
1064 interface_set_up(iface
);
1069 set_config_state(struct interface
*iface
, enum interface_config_state s
)
1071 iface
->config_state
= s
;
1072 if (iface
->state
== IFS_DOWN
)
1073 interface_handle_config_change(iface
);
1075 __interface_set_down(iface
, false);
1079 interface_update_start(struct interface
*iface
)
1082 interface_ip_update_start(&iface
->proto_ip
);
1086 interface_update_complete(struct interface
*iface
)
1088 interface_ip_update_complete(&iface
->proto_ip
);
1092 interface_replace_dns(struct interface_ip_settings
*new, struct interface_ip_settings
*old
)
1094 vlist_simple_replace(&new->dns_servers
, &old
->dns_servers
);
1095 vlist_simple_replace(&new->dns_search
, &old
->dns_search
);
1099 interface_device_config_changed(struct interface
*if_old
, struct interface
*if_new
)
1101 struct blob_attr
*ntb
[__DEV_ATTR_MAX
];
1102 struct blob_attr
*otb
[__DEV_ATTR_MAX
];
1103 struct device
*dev
= if_old
->main_dev
.dev
;
1104 unsigned long diff
= 0;
1106 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ 8);
1111 if (if_old
->device_config
!= if_new
->device_config
)
1114 if (!if_new
->device_config
)
1117 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb
,
1118 blob_data(if_old
->config
), blob_len(if_old
->config
));
1120 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, ntb
,
1121 blob_data(if_new
->config
), blob_len(if_new
->config
));
1123 uci_blob_diff(ntb
, otb
, &device_attr_list
, &diff
);
1128 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
1130 struct blob_attr
*old_config
= if_old
->config
;
1131 bool reload
= false, reload_ip
= false;
1133 #define FIELD_CHANGED_STR(field) \
1134 ((!!if_old->field != !!if_new->field) || \
1136 strcmp(if_old->field, if_new->field) != 0))
1138 if (FIELD_CHANGED_STR(parent_ifname
)) {
1139 if (if_old
->parent_iface
.iface
)
1140 interface_remove_user(&if_old
->parent_iface
);
1144 if (!reload
&& interface_device_config_changed(if_old
, if_new
))
1147 if (FIELD_CHANGED_STR(ifname
) ||
1148 if_old
->proto_handler
!= if_new
->proto_handler
)
1151 if (!if_old
->proto_handler
->config_params
)
1152 D(INTERFACE
, "No config parameters for interface '%s'\n",
1154 else if (!uci_blob_check_equal(if_old
->config
, if_new
->config
,
1155 if_old
->proto_handler
->config_params
))
1158 #define UPDATE(field, __var) ({ \
1159 bool __changed = (if_old->field != if_new->field); \
1160 if_old->field = if_new->field; \
1161 __var |= __changed; \
1164 if_old
->config
= if_new
->config
;
1165 if (if_old
->config_autostart
!= if_new
->config_autostart
) {
1166 if (if_old
->config_autostart
)
1169 if_old
->autostart
= if_new
->config_autostart
;
1172 if_old
->device_config
= if_new
->device_config
;
1173 if_old
->config_autostart
= if_new
->config_autostart
;
1174 if_old
->ifname
= if_new
->ifname
;
1175 if_old
->parent_ifname
= if_new
->parent_ifname
;
1176 if_old
->proto_handler
= if_new
->proto_handler
;
1177 if_old
->force_link
= if_new
->force_link
;
1179 if_old
->proto_ip
.no_dns
= if_new
->proto_ip
.no_dns
;
1180 interface_replace_dns(&if_old
->config_ip
, &if_new
->config_ip
);
1182 UPDATE(metric
, reload_ip
);
1183 UPDATE(proto_ip
.no_defaultroute
, reload_ip
);
1184 UPDATE(ip4table
, reload_ip
);
1185 UPDATE(ip6table
, reload_ip
);
1186 interface_merge_assignment_data(if_old
, if_new
);
1191 D(INTERFACE
, "Reload interface '%s' because of config changes\n",
1193 interface_clear_errors(if_old
);
1194 set_config_state(if_old
, IFC_RELOAD
);
1199 bool config_ip_enabled
= if_old
->config_ip
.enabled
;
1200 bool proto_ip_enabled
= if_old
->proto_ip
.enabled
;
1202 interface_ip_set_enabled(&if_old
->config_ip
, false);
1203 interface_ip_set_enabled(&if_old
->proto_ip
, false);
1204 interface_ip_set_enabled(&if_old
->proto_ip
, proto_ip_enabled
);
1205 interface_ip_set_enabled(&if_old
->config_ip
, config_ip_enabled
);
1208 interface_write_resolv_conf();
1209 if (if_old
->main_dev
.dev
)
1210 interface_check_state(if_old
);
1213 if_new
->config
= NULL
;
1214 interface_cleanup(if_new
);
1220 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
1221 struct vlist_node
*node_old
)
1223 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
1224 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
1226 if (node_old
&& node_new
) {
1227 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
1228 interface_change_config(if_old
, if_new
);
1229 } else if (node_old
) {
1230 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
1231 set_config_state(if_old
, IFC_REMOVE
);
1232 } else if (node_new
) {
1233 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
1234 proto_init_interface(if_new
, if_new
->config
);
1235 interface_claim_device(if_new
);
1236 netifd_ubus_add_interface(if_new
);
1242 interface_init_list(void)
1244 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
1245 interfaces
.keep_old
= true;
1246 interfaces
.no_delete
= true;