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
);
80 interface_error_flush(struct interface
*iface
)
82 struct interface_error
*error
, *tmp
;
84 list_for_each_entry_safe(error
, tmp
, &iface
->errors
, list
) {
85 list_del(&error
->list
);
91 interface_clear_errors(struct interface
*iface
)
93 /* don't flush the errors in case the configured protocol handler matches the
94 running protocol handler and is having the last error capability */
96 (iface
->proto
->handler
->flags
& PROTO_FLAG_LASTERROR
) &&
97 (iface
->proto
->handler
->name
== iface
->proto_handler
->name
)))
98 interface_error_flush(iface
);
101 void interface_add_error(struct interface
*iface
, const char *subsystem
,
102 const char *code
, const char **data
, int n_data
)
104 struct interface_error
*error
;
107 char *dest
, *d_subsys
, *d_code
;
109 /* if the configured protocol handler has the last error support capability,
110 errors should only be added if the running protocol handler matches the
113 (iface
->proto
->handler
->flags
& PROTO_FLAG_LASTERROR
) &&
114 (iface
->proto
->handler
->name
!= iface
->proto_handler
->name
))
118 len
= n_data
* sizeof(char *);
119 datalen
= alloca(len
);
120 for (i
= 0; i
< n_data
; i
++) {
121 datalen
[i
] = strlen(data
[i
]) + 1;
126 error
= calloc_a(sizeof(*error
) + sizeof(char *) + len
,
127 &d_subsys
, subsystem
? strlen(subsystem
) + 1 : 0,
128 &d_code
, code
? strlen(code
) + 1 : 0);
132 /* Only keep the last flagged error, prevent this list grows unlimitted in case the
133 protocol can't be established (e.g auth failure) */
134 if (iface
->proto_handler
->flags
& PROTO_FLAG_LASTERROR
)
135 interface_error_flush(iface
);
137 list_add_tail(&error
->list
, &iface
->errors
);
139 dest
= (char *) &error
->data
[n_data
+ 1];
140 for (i
= 0; i
< n_data
; i
++) {
141 error
->data
[i
] = dest
;
142 memcpy(dest
, data
[i
], datalen
[i
]);
145 error
->data
[n_data
] = NULL
;
148 error
->subsystem
= strcpy(d_subsys
, subsystem
);
151 error
->code
= strcpy(d_code
, code
);
155 interface_data_del(struct interface
*iface
, struct interface_data
*data
)
157 avl_delete(&iface
->data
, &data
->node
);
162 interface_data_flush(struct interface
*iface
)
164 struct interface_data
*d
, *tmp
;
166 avl_for_each_element_safe(&iface
->data
, d
, node
, tmp
)
167 interface_data_del(iface
, d
);
171 interface_add_data(struct interface
*iface
, const struct blob_attr
*data
)
173 struct interface_data
*n
, *o
;
175 if (!blobmsg_check_attr(data
, true))
176 return UBUS_STATUS_INVALID_ARGUMENT
;
178 const char *name
= blobmsg_name(data
);
179 unsigned len
= blob_pad_len(data
);
181 o
= avl_find_element(&iface
->data
, name
, o
, node
);
183 if (blob_pad_len(o
->data
) == len
&& !memcmp(o
->data
, data
, len
))
186 interface_data_del(iface
, o
);
189 n
= calloc(1, sizeof(*n
) + len
);
190 memcpy(n
->data
, data
, len
);
191 n
->node
.key
= blobmsg_name(n
->data
);
192 avl_insert(&iface
->data
, &n
->node
);
194 iface
->updated
|= IUF_DATA
;
199 interface_event(struct interface
*iface
, enum interface_event ev
)
201 struct interface_user
*dep
, *tmp
;
202 struct device
*adev
= NULL
;
204 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
205 dep
->cb(dep
, iface
, ev
);
207 list_for_each_entry_safe(dep
, tmp
, &iface_all_users
, list
)
208 dep
->cb(dep
, iface
, ev
);
212 interface_error_flush(iface
);
213 adev
= iface
->l3_dev
.dev
;
216 alias_notify_device(iface
->name
, adev
);
224 interface_flush_state(struct interface
*iface
)
226 if (iface
->l3_dev
.dev
)
227 device_release(&iface
->l3_dev
);
228 interface_data_flush(iface
);
232 mark_interface_down(struct interface
*iface
)
234 enum interface_state state
= iface
->state
;
236 if (state
== IFS_DOWN
)
239 iface
->state
= IFS_DOWN
;
241 interface_event(iface
, IFEV_DOWN
);
242 interface_ip_set_enabled(&iface
->config_ip
, false);
243 interface_ip_set_enabled(&iface
->proto_ip
, false);
244 interface_ip_flush(&iface
->proto_ip
);
245 interface_flush_state(iface
);
246 system_flush_routes();
250 __interface_set_down(struct interface
*iface
, bool force
)
252 enum interface_state state
= iface
->state
;
256 iface
->state
= IFS_TEARDOWN
;
258 interface_event(iface
, IFEV_DOWN
);
260 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, force
);
262 interface_flush_state(iface
);
266 if (iface
->main_dev
.dev
)
267 device_release(&iface
->main_dev
);
275 __interface_set_up(struct interface
*iface
)
279 netifd_log_message(L_NOTICE
, "Interface '%s' is setting up now\n", iface
->name
);
281 iface
->state
= IFS_SETUP
;
282 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
284 mark_interface_down(iface
);
290 interface_check_state(struct interface
*iface
)
292 bool link_state
= iface
->link_state
|| iface
->force_link
;
294 switch (iface
->state
) {
297 if (!iface
->enabled
|| !link_state
) {
298 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
299 mark_interface_down(iface
);
303 if (!iface
->available
)
306 if (iface
->autostart
&& iface
->enabled
&& link_state
&& !config_init
)
307 __interface_set_up(iface
);
315 interface_set_enabled(struct interface
*iface
, bool new_state
)
317 if (iface
->enabled
== new_state
)
320 netifd_log_message(L_NOTICE
, "Interface '%s' is %s\n", iface
->name
, new_state
? "enabled" : "disabled");
321 iface
->enabled
= new_state
;
322 interface_check_state(iface
);
326 interface_set_link_state(struct interface
*iface
, bool new_state
)
328 if (iface
->link_state
== new_state
)
331 netifd_log_message(L_NOTICE
, "Interface '%s' has link connectivity %s\n", iface
->name
, new_state
? "" : "loss");
332 iface
->link_state
= new_state
;
333 interface_check_state(iface
);
337 interface_ext_dev_cb(struct device_user
*dep
, enum device_event ev
)
339 if (ev
== DEV_EVENT_REMOVE
)
340 device_remove_user(dep
);
344 interface_main_dev_cb(struct device_user
*dep
, enum device_event ev
)
346 struct interface
*iface
;
347 bool new_state
= false;
349 iface
= container_of(dep
, struct interface
, main_dev
);
353 case DEV_EVENT_REMOVE
:
354 interface_set_available(iface
, new_state
);
355 if (!new_state
&& dep
->dev
&& dep
->dev
->external
)
356 interface_set_main_dev(iface
, NULL
);
361 interface_set_enabled(iface
, new_state
);
363 case DEV_EVENT_LINK_UP
:
365 case DEV_EVENT_LINK_DOWN
:
366 interface_set_link_state(iface
, new_state
);
368 case DEV_EVENT_TOPO_CHANGE
:
369 interface_proto_event(iface
->proto
, PROTO_CMD_RENEW
, false);
377 interface_l3_dev_cb(struct device_user
*dep
, enum device_event ev
)
379 struct interface
*iface
;
381 iface
= container_of(dep
, struct interface
, l3_dev
);
382 if (iface
->l3_dev
.dev
== iface
->main_dev
.dev
)
386 case DEV_EVENT_LINK_DOWN
:
387 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
395 interface_set_available(struct interface
*iface
, bool new_state
)
397 if (iface
->available
== new_state
)
400 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
401 iface
->available
= new_state
;
404 if (iface
->autostart
&& !config_init
)
405 interface_set_up(iface
);
407 __interface_set_down(iface
, true);
411 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
414 list_add(&dep
->list
, &iface_all_users
);
419 list_add(&dep
->list
, &iface
->users
);
420 if (iface
->state
== IFS_UP
)
421 dep
->cb(dep
, iface
, IFEV_UP
);
425 interface_remove_user(struct interface_user
*dep
)
427 list_del_init(&dep
->list
);
432 interface_add_assignment_classes(struct interface
*iface
, struct blob_attr
*list
)
434 struct blob_attr
*cur
;
437 blobmsg_for_each_attr(cur
, list
, rem
) {
438 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
441 if (!blobmsg_check_attr(cur
, NULL
))
444 struct interface_assignment_class
*c
= malloc(sizeof(*c
) + blobmsg_data_len(cur
));
445 memcpy(c
->name
, blobmsg_data(cur
), blobmsg_data_len(cur
));
446 list_add(&c
->head
, &iface
->assignment_classes
);
451 interface_clear_assignment_classes(struct interface
*iface
)
453 while (!list_empty(&iface
->assignment_classes
)) {
454 struct interface_assignment_class
*c
= list_first_entry(&iface
->assignment_classes
,
455 struct interface_assignment_class
, head
);
462 interface_merge_assignment_data(struct interface
*old
, struct interface
*new)
464 bool changed
= (old
->assignment_hint
!= new->assignment_hint
||
465 old
->assignment_length
!= new->assignment_length
||
466 old
->assignment_iface_id_selection
!= new->assignment_iface_id_selection
||
467 (old
->assignment_iface_id_selection
== IFID_FIXED
&&
468 memcmp(&old
->assignment_fixed_iface_id
, &new->assignment_fixed_iface_id
,
469 sizeof(old
->assignment_fixed_iface_id
))) ||
470 list_empty(&old
->assignment_classes
) != list_empty(&new->assignment_classes
));
472 struct interface_assignment_class
*c
;
473 list_for_each_entry(c
, &new->assignment_classes
, head
) {
474 // Compare list entries one-by-one to see if there was a change
475 if (list_empty(&old
->assignment_classes
)) // The new list is longer
481 struct interface_assignment_class
*c_old
= list_first_entry(&old
->assignment_classes
,
482 struct interface_assignment_class
, head
);
484 if (strcmp(c_old
->name
, c
->name
)) // An entry didn't match
487 list_del(&c_old
->head
);
491 // The old list was longer than the new one or the last entry didn't match
492 if (!list_empty(&old
->assignment_classes
)) {
493 interface_clear_assignment_classes(old
);
497 list_splice_init(&new->assignment_classes
, &old
->assignment_classes
);
500 old
->assignment_hint
= new->assignment_hint
;
501 old
->assignment_length
= new->assignment_length
;
502 old
->assignment_iface_id_selection
= new->assignment_iface_id_selection
;
503 old
->assignment_fixed_iface_id
= new->assignment_fixed_iface_id
;
504 interface_refresh_assignments(true);
509 interface_alias_cb(struct interface_user
*dep
, struct interface
*iface
, enum interface_event ev
)
511 struct interface
*alias
= container_of(dep
, struct interface
, parent_iface
);
512 struct device
*dev
= iface
->l3_dev
.dev
;
519 interface_set_main_dev(alias
, dev
);
520 interface_set_available(alias
, true);
523 interface_set_available(alias
, false);
524 interface_set_main_dev(alias
, NULL
);
527 interface_remove_user(dep
);
536 interface_set_device_config(struct interface
*iface
, struct device
*dev
)
538 if (!dev
|| !dev
->default_config
)
541 if (!iface
->device_config
&&
542 (!dev
->iface_config
|| dev
->config_iface
!= iface
))
545 dev
->config_iface
= iface
;
546 dev
->iface_config
= iface
->device_config
;
547 device_apply_config(dev
, dev
->type
, iface
->config
);
551 interface_claim_device(struct interface
*iface
)
553 struct interface
*parent
;
554 struct device
*dev
= NULL
;
556 if (iface
->parent_iface
.iface
)
557 interface_remove_user(&iface
->parent_iface
);
559 if (iface
->parent_ifname
) {
560 parent
= vlist_find(&interfaces
, iface
->parent_ifname
, parent
, node
);
561 iface
->parent_iface
.cb
= interface_alias_cb
;
562 interface_add_user(&iface
->parent_iface
, parent
);
563 } else if (iface
->ifname
&&
564 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
565 dev
= device_get(iface
->ifname
, true);
566 interface_set_device_config(iface
, dev
);
568 dev
= iface
->ext_dev
.dev
;
572 interface_set_main_dev(iface
, dev
);
574 if (iface
->proto_handler
->flags
& PROTO_FLAG_INIT_AVAILABLE
)
575 interface_set_available(iface
, true);
579 interface_cleanup_state(struct interface
*iface
)
581 interface_set_available(iface
, false);
583 interface_flush_state(iface
);
584 interface_clear_errors(iface
);
585 interface_set_proto_state(iface
, NULL
);
587 interface_set_main_dev(iface
, NULL
);
588 interface_set_l3_dev(iface
, NULL
);
592 interface_cleanup(struct interface
*iface
)
594 struct interface_user
*dep
, *tmp
;
596 uloop_timeout_cancel(&iface
->remove_timer
);
597 device_remove_user(&iface
->ext_dev
);
599 if (iface
->parent_iface
.iface
)
600 interface_remove_user(&iface
->parent_iface
);
602 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
603 interface_remove_user(dep
);
605 interface_clear_assignment_classes(iface
);
606 interface_ip_flush(&iface
->config_ip
);
607 interface_cleanup_state(iface
);
611 interface_do_free(struct interface
*iface
)
613 interface_event(iface
, IFEV_FREE
);
614 interface_cleanup(iface
);
616 netifd_ubus_remove_interface(iface
);
617 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
622 interface_do_reload(struct interface
*iface
)
624 interface_event(iface
, IFEV_RELOAD
);
625 interface_cleanup_state(iface
);
626 proto_init_interface(iface
, iface
->config
);
627 interface_claim_device(iface
);
631 interface_handle_config_change(struct interface
*iface
)
633 enum interface_config_state state
= iface
->config_state
;
635 iface
->config_state
= IFC_NORMAL
;
640 interface_do_reload(iface
);
643 interface_do_free(iface
);
646 if (iface
->autostart
&& iface
->available
)
647 interface_set_up(iface
);
648 else if (iface
->dynamic
)
649 set_config_state(iface
, IFC_REMOVE
);
653 interface_proto_event_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
655 struct interface
*iface
= state
->iface
;
659 if (iface
->state
!= IFS_SETUP
) {
660 interface_event(iface
, IFEV_UPDATE
);
664 if (!iface
->l3_dev
.dev
)
665 interface_set_l3_dev(iface
, iface
->main_dev
.dev
);
667 interface_ip_set_enabled(&iface
->config_ip
, true);
668 interface_ip_set_enabled(&iface
->proto_ip
, true);
669 system_flush_routes();
670 iface
->state
= IFS_UP
;
671 iface
->start_time
= system_get_rtime();
672 interface_event(iface
, IFEV_UP
);
673 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
676 if (iface
->state
== IFS_DOWN
)
679 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
680 mark_interface_down(iface
);
681 if (iface
->main_dev
.dev
)
682 device_release(&iface
->main_dev
);
683 if (iface
->l3_dev
.dev
)
684 device_remove_user(&iface
->l3_dev
);
685 interface_handle_config_change(iface
);
687 case IFPEV_LINK_LOST
:
688 if (iface
->state
!= IFS_UP
)
691 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
692 mark_interface_down(iface
);
693 iface
->state
= IFS_SETUP
;
699 interface_write_resolv_conf();
702 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
705 iface
->proto
->free(iface
->proto
);
708 iface
->state
= IFS_DOWN
;
709 iface
->proto
= state
;
713 state
->proto_event
= interface_proto_event_cb
;
714 state
->iface
= iface
;
718 interface_alloc(const char *name
, struct blob_attr
*config
)
720 struct interface
*iface
;
721 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
722 struct blob_attr
*cur
;
723 const char *proto_name
= NULL
;
725 bool force_link
= false;
727 iface
= calloc_a(sizeof(*iface
), &iface_name
, strlen(name
) + 1);
728 iface
->name
= strcpy(iface_name
, name
);
729 INIT_LIST_HEAD(&iface
->errors
);
730 INIT_LIST_HEAD(&iface
->users
);
731 INIT_LIST_HEAD(&iface
->hotplug_list
);
732 INIT_LIST_HEAD(&iface
->assignment_classes
);
733 interface_ip_init(iface
);
734 avl_init(&iface
->data
, avl_strcmp
, false, NULL
);
735 iface
->config_ip
.enabled
= false;
737 iface
->main_dev
.cb
= interface_main_dev_cb
;
738 iface
->l3_dev
.cb
= interface_l3_dev_cb
;
739 iface
->ext_dev
.cb
= interface_ext_dev_cb
;
741 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
742 blob_data(config
), blob_len(config
));
744 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
745 proto_name
= blobmsg_data(cur
);
747 proto_attach_interface(iface
, proto_name
);
748 if (iface
->proto_handler
->flags
& PROTO_FLAG_FORCE_LINK_DEFAULT
)
751 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
752 iface
->force_link
= blobmsg_get_bool_default(tb
[IFACE_ATTR_FORCE_LINK
], force_link
);
753 iface
->proto_ip
.no_defaultroute
=
754 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
755 iface
->proto_ip
.no_dns
=
756 !blobmsg_get_bool_default(tb
[IFACE_ATTR_PEERDNS
], true);
758 if ((cur
= tb
[IFACE_ATTR_DNS
]))
759 interface_add_dns_server_list(&iface
->config_ip
, cur
);
761 if ((cur
= tb
[IFACE_ATTR_DNS_SEARCH
]))
762 interface_add_dns_search_list(&iface
->config_ip
, cur
);
764 if ((cur
= tb
[IFACE_ATTR_METRIC
]))
765 iface
->metric
= blobmsg_get_u32(cur
);
767 if ((cur
= tb
[IFACE_ATTR_IP6ASSIGN
]))
768 iface
->assignment_length
= blobmsg_get_u32(cur
);
771 iface
->assignment_iface_id_selection
= IFID_FIXED
;
772 iface
->assignment_fixed_iface_id
= in6addr_any
;
773 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
775 if ((cur
= tb
[IFACE_ATTR_IP6IFACEID
])) {
776 const char *ifaceid
= blobmsg_data(cur
);
777 if (!strcmp(ifaceid
, "random")) {
778 iface
->assignment_iface_id_selection
= IFID_RANDOM
;
780 else if (!strcmp(ifaceid
, "eui64")) {
781 iface
->assignment_iface_id_selection
= IFID_EUI64
;
784 /* we expect an IPv6 address with network id zero here -> fixed iface id
785 if we cannot parse -> revert to iface id 1 */
786 if (inet_pton(AF_INET6
,ifaceid
,&iface
->assignment_fixed_iface_id
) != 1 ||
787 iface
->assignment_fixed_iface_id
.s6_addr32
[0] != 0 ||
788 iface
->assignment_fixed_iface_id
.s6_addr32
[1] != 0) {
789 iface
->assignment_fixed_iface_id
= in6addr_any
;
790 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
791 netifd_log_message(L_WARNING
, "Failed to parse ip6ifaceid for interface '%s', \
792 falling back to iface id 1.\n", iface
->name
);
797 iface
->assignment_hint
= -1;
798 if ((cur
= tb
[IFACE_ATTR_IP6HINT
]))
799 iface
->assignment_hint
= strtol(blobmsg_get_string(cur
), NULL
, 16) &
800 ~((1 << (64 - iface
->assignment_length
)) - 1);
802 if ((cur
= tb
[IFACE_ATTR_IP6CLASS
]))
803 interface_add_assignment_classes(iface
, cur
);
806 if ((cur
= tb
[IFACE_ATTR_IP4TABLE
])) {
807 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip4table
))
808 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
811 if ((cur
= tb
[IFACE_ATTR_IP6TABLE
])) {
812 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip6table
))
813 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
816 iface
->proto_ip
.no_delegation
= !blobmsg_get_bool_default(tb
[IFACE_ATTR_DELEGATE
], true);
818 iface
->config_autostart
= iface
->autostart
;
822 void interface_set_dynamic(struct interface
*iface
)
824 iface
->dynamic
= true;
825 iface
->autostart
= true;
826 iface
->node
.version
= -1; // Don't delete on reload
829 static bool __interface_add(struct interface
*iface
, struct blob_attr
*config
, bool alias
)
831 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
832 struct blob_attr
*cur
;
834 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
835 blob_data(config
), blob_len(config
));
838 if ((cur
= tb
[IFACE_ATTR_INTERFACE
]))
839 iface
->parent_ifname
= blobmsg_data(cur
);
841 if (!iface
->parent_ifname
)
844 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
845 iface
->ifname
= blobmsg_data(cur
);
848 iface
->config
= config
;
849 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
854 interface_add(struct interface
*iface
, struct blob_attr
*config
)
856 __interface_add(iface
, config
, false);
860 interface_add_alias(struct interface
*iface
, struct blob_attr
*config
)
862 if (iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)
865 return __interface_add(iface
, config
, true);
869 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
871 bool enabled
= iface
->config_ip
.enabled
;
872 bool claimed
= iface
->l3_dev
.claimed
;
874 if (iface
->l3_dev
.dev
== dev
)
877 interface_ip_set_enabled(&iface
->config_ip
, false);
878 interface_ip_set_enabled(&iface
->proto_ip
, false);
879 interface_ip_flush(&iface
->proto_ip
);
880 device_add_user(&iface
->l3_dev
, dev
);
884 if (device_claim(&iface
->l3_dev
) < 0)
887 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
888 interface_ip_set_enabled(&iface
->proto_ip
, enabled
);
893 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
895 bool claimed
= iface
->l3_dev
.claimed
;
897 if (iface
->main_dev
.dev
== dev
)
900 interface_set_available(iface
, false);
901 device_add_user(&iface
->main_dev
, dev
);
903 interface_set_link_state(iface
, false);
908 if (device_claim(&iface
->l3_dev
) < 0)
912 if (!iface
->l3_dev
.dev
)
913 interface_set_l3_dev(iface
, dev
);
917 interface_remove_link(struct interface
*iface
, struct device
*dev
)
919 struct device
*mdev
= iface
->main_dev
.dev
;
921 if (mdev
&& mdev
->hotplug_ops
)
922 return mdev
->hotplug_ops
->del(mdev
, dev
);
924 if (dev
== iface
->ext_dev
.dev
)
925 device_remove_user(&iface
->ext_dev
);
927 if (!iface
->main_dev
.hotplug
)
928 return UBUS_STATUS_INVALID_ARGUMENT
;
930 if (dev
!= iface
->main_dev
.dev
)
931 return UBUS_STATUS_INVALID_ARGUMENT
;
933 interface_set_main_dev(iface
, NULL
);
938 interface_add_link(struct interface
*iface
, struct device
*dev
, bool link_ext
)
940 struct device
*mdev
= iface
->main_dev
.dev
;
945 if (iface
->main_dev
.hotplug
)
946 device_remove_user(&iface
->main_dev
);
949 if (mdev
->hotplug_ops
)
950 return mdev
->hotplug_ops
->add(mdev
, dev
);
952 return UBUS_STATUS_NOT_SUPPORTED
;
956 device_add_user(&iface
->ext_dev
, dev
);
958 interface_set_main_dev(iface
, dev
);
959 iface
->main_dev
.hotplug
= true;
964 interface_handle_link(struct interface
*iface
, const char *name
, bool add
, bool link_ext
)
971 dev
= device_get(name
, add
? (link_ext
? 2 : 1) : 0);
973 ret
= UBUS_STATUS_NOT_FOUND
;
978 interface_set_device_config(iface
, dev
);
979 device_set_present(dev
, true);
981 ret
= interface_add_link(iface
, dev
, link_ext
);
983 ret
= interface_remove_link(iface
, dev
);
993 interface_set_up(struct interface
*iface
)
997 iface
->autostart
= true;
999 if (iface
->state
!= IFS_DOWN
)
1002 interface_clear_errors(iface
);
1003 if (!iface
->available
) {
1004 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
1008 if (iface
->main_dev
.dev
) {
1009 ret
= device_claim(&iface
->main_dev
);
1011 interface_check_state(iface
);
1014 ret
= __interface_set_up(iface
);
1020 interface_set_down(struct interface
*iface
)
1023 vlist_for_each_element(&interfaces
, iface
, node
)
1024 __interface_set_down(iface
, false);
1026 iface
->autostart
= false;
1027 __interface_set_down(iface
, false);
1034 interface_start_pending(void)
1036 struct interface
*iface
;
1038 vlist_for_each_element(&interfaces
, iface
, node
) {
1039 if (iface
->available
&& iface
->autostart
)
1040 interface_set_up(iface
);
1045 set_config_state(struct interface
*iface
, enum interface_config_state s
)
1047 iface
->config_state
= s
;
1048 if (iface
->state
== IFS_DOWN
)
1049 interface_handle_config_change(iface
);
1051 __interface_set_down(iface
, false);
1055 interface_update_start(struct interface
*iface
)
1058 interface_ip_update_start(&iface
->proto_ip
);
1062 interface_update_complete(struct interface
*iface
)
1064 interface_ip_update_complete(&iface
->proto_ip
);
1068 interface_replace_dns(struct interface_ip_settings
*new, struct interface_ip_settings
*old
)
1070 vlist_simple_replace(&new->dns_servers
, &old
->dns_servers
);
1071 vlist_simple_replace(&new->dns_search
, &old
->dns_search
);
1075 interface_device_config_changed(struct interface
*if_old
, struct interface
*if_new
)
1077 struct blob_attr
*ntb
[__DEV_ATTR_MAX
];
1078 struct blob_attr
*otb
[__DEV_ATTR_MAX
];
1079 struct device
*dev
= if_old
->main_dev
.dev
;
1080 unsigned long diff
= 0;
1082 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ 8);
1087 if (if_old
->device_config
!= if_new
->device_config
)
1090 if (!if_new
->device_config
)
1093 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb
,
1094 blob_data(if_old
->config
), blob_len(if_old
->config
));
1096 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, ntb
,
1097 blob_data(if_new
->config
), blob_len(if_new
->config
));
1099 uci_blob_diff(ntb
, otb
, &device_attr_list
, &diff
);
1104 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
1106 struct blob_attr
*old_config
= if_old
->config
;
1107 bool reload
= false, reload_ip
= false;
1109 #define FIELD_CHANGED_STR(field) \
1110 ((!!if_old->field != !!if_new->field) || \
1112 strcmp(if_old->field, if_new->field) != 0))
1114 if (FIELD_CHANGED_STR(parent_ifname
)) {
1115 if (if_old
->parent_iface
.iface
)
1116 interface_remove_user(&if_old
->parent_iface
);
1120 if (!reload
&& interface_device_config_changed(if_old
, if_new
))
1123 if (FIELD_CHANGED_STR(ifname
) ||
1124 if_old
->proto_handler
!= if_new
->proto_handler
)
1127 if (!if_old
->proto_handler
->config_params
)
1128 D(INTERFACE
, "No config parameters for interface '%s'\n",
1130 else if (!uci_blob_check_equal(if_old
->config
, if_new
->config
,
1131 if_old
->proto_handler
->config_params
))
1134 #define UPDATE(field, __var) ({ \
1135 bool __changed = (if_old->field != if_new->field); \
1136 if_old->field = if_new->field; \
1137 __var |= __changed; \
1140 if_old
->config
= if_new
->config
;
1141 if (if_old
->config_autostart
!= if_new
->config_autostart
) {
1142 if (if_old
->config_autostart
)
1145 if_old
->autostart
= if_new
->config_autostart
;
1148 if_old
->device_config
= if_new
->device_config
;
1149 if_old
->config_autostart
= if_new
->config_autostart
;
1150 if_old
->ifname
= if_new
->ifname
;
1151 if_old
->parent_ifname
= if_new
->parent_ifname
;
1152 if_old
->proto_handler
= if_new
->proto_handler
;
1153 if_old
->force_link
= if_new
->force_link
;
1155 if_old
->proto_ip
.no_dns
= if_new
->proto_ip
.no_dns
;
1156 interface_replace_dns(&if_old
->config_ip
, &if_new
->config_ip
);
1158 UPDATE(metric
, reload_ip
);
1159 UPDATE(proto_ip
.no_defaultroute
, reload_ip
);
1160 UPDATE(ip4table
, reload_ip
);
1161 UPDATE(ip6table
, reload_ip
);
1162 interface_merge_assignment_data(if_old
, if_new
);
1167 D(INTERFACE
, "Reload interface '%s' because of config changes\n",
1169 interface_clear_errors(if_old
);
1170 set_config_state(if_old
, IFC_RELOAD
);
1175 bool config_ip_enabled
= if_old
->config_ip
.enabled
;
1176 bool proto_ip_enabled
= if_old
->proto_ip
.enabled
;
1178 interface_ip_set_enabled(&if_old
->config_ip
, false);
1179 interface_ip_set_enabled(&if_old
->proto_ip
, false);
1180 interface_ip_set_enabled(&if_old
->proto_ip
, proto_ip_enabled
);
1181 interface_ip_set_enabled(&if_old
->config_ip
, config_ip_enabled
);
1184 interface_write_resolv_conf();
1185 if (if_old
->main_dev
.dev
)
1186 interface_check_state(if_old
);
1189 if_new
->config
= NULL
;
1190 interface_cleanup(if_new
);
1196 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
1197 struct vlist_node
*node_old
)
1199 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
1200 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
1202 if (node_old
&& node_new
) {
1203 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
1204 interface_change_config(if_old
, if_new
);
1205 } else if (node_old
) {
1206 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
1207 set_config_state(if_old
, IFC_REMOVE
);
1208 } else if (node_new
) {
1209 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
1210 proto_init_interface(if_new
, if_new
->config
);
1211 interface_claim_device(if_new
);
1212 netifd_ubus_add_interface(if_new
);
1218 interface_init_list(void)
1220 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
1221 interfaces
.keep_old
= true;
1222 interfaces
.no_delete
= true;