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 interface_error_flush(struct interface
*iface
)
79 struct interface_error
*error
, *tmp
;
81 list_for_each_entry_safe(error
, tmp
, &iface
->errors
, list
) {
82 list_del(&error
->list
);
88 interface_clear_errors(struct interface
*iface
)
90 /* don't flush the errors in case the configured protocol handler matches the
91 running protocol handler and is having the last error capability */
93 (iface
->proto
->handler
->flags
& PROTO_FLAG_LASTERROR
) &&
94 (iface
->proto
->handler
->name
== iface
->proto_handler
->name
)))
95 interface_error_flush(iface
);
98 void interface_add_error(struct interface
*iface
, const char *subsystem
,
99 const char *code
, const char **data
, int n_data
)
101 struct interface_error
*error
;
104 char *dest
, *d_subsys
, *d_code
;
106 /* if the configured protocol handler has the last error support capability,
107 errors should only be added if the running protocol handler matches the
110 (iface
->proto
->handler
->flags
& PROTO_FLAG_LASTERROR
) &&
111 (iface
->proto
->handler
->name
!= iface
->proto_handler
->name
))
115 len
= n_data
* sizeof(char *);
116 datalen
= alloca(len
);
117 for (i
= 0; i
< n_data
; i
++) {
118 datalen
[i
] = strlen(data
[i
]) + 1;
123 error
= calloc_a(sizeof(*error
) + sizeof(char *) + len
,
124 &d_subsys
, subsystem
? strlen(subsystem
) + 1 : 0,
125 &d_code
, code
? strlen(code
) + 1 : 0);
129 /* Only keep the last flagged error, prevent this list grows unlimitted in case the
130 protocol can't be established (e.g auth failure) */
131 if (iface
->proto_handler
->flags
& PROTO_FLAG_LASTERROR
)
132 interface_error_flush(iface
);
134 list_add_tail(&error
->list
, &iface
->errors
);
136 dest
= (char *) &error
->data
[n_data
+ 1];
137 for (i
= 0; i
< n_data
; i
++) {
138 error
->data
[i
] = dest
;
139 memcpy(dest
, data
[i
], datalen
[i
]);
142 error
->data
[n_data
] = NULL
;
145 error
->subsystem
= strcpy(d_subsys
, subsystem
);
148 error
->code
= strcpy(d_code
, code
);
152 interface_data_del(struct interface
*iface
, struct interface_data
*data
)
154 avl_delete(&iface
->data
, &data
->node
);
159 interface_data_flush(struct interface
*iface
)
161 struct interface_data
*d
, *tmp
;
163 avl_for_each_element_safe(&iface
->data
, d
, node
, tmp
)
164 interface_data_del(iface
, d
);
168 interface_add_data(struct interface
*iface
, const struct blob_attr
*data
)
170 struct interface_data
*n
, *o
;
172 if (!blobmsg_check_attr(data
, true))
173 return UBUS_STATUS_INVALID_ARGUMENT
;
175 const char *name
= blobmsg_name(data
);
176 unsigned len
= blob_pad_len(data
);
178 o
= avl_find_element(&iface
->data
, name
, o
, node
);
180 if (blob_pad_len(o
->data
) == len
&& !memcmp(o
->data
, data
, len
))
183 interface_data_del(iface
, o
);
186 n
= calloc(1, sizeof(*n
) + len
);
187 memcpy(n
->data
, data
, len
);
188 n
->node
.key
= blobmsg_name(n
->data
);
189 avl_insert(&iface
->data
, &n
->node
);
191 iface
->updated
|= IUF_DATA
;
196 interface_event(struct interface
*iface
, enum interface_event ev
)
198 struct interface_user
*dep
, *tmp
;
199 struct device
*adev
= NULL
;
201 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
202 dep
->cb(dep
, iface
, ev
);
204 list_for_each_entry_safe(dep
, tmp
, &iface_all_users
, list
)
205 dep
->cb(dep
, iface
, ev
);
209 interface_error_flush(iface
);
210 adev
= iface
->l3_dev
.dev
;
213 alias_notify_device(iface
->name
, adev
);
221 interface_flush_state(struct interface
*iface
)
223 if (iface
->l3_dev
.dev
)
224 device_release(&iface
->l3_dev
);
225 interface_data_flush(iface
);
229 mark_interface_down(struct interface
*iface
)
231 enum interface_state state
= iface
->state
;
233 if (state
== IFS_DOWN
)
236 iface
->state
= IFS_DOWN
;
238 interface_event(iface
, IFEV_DOWN
);
239 interface_ip_set_enabled(&iface
->config_ip
, false);
240 interface_ip_flush(&iface
->proto_ip
);
241 interface_flush_state(iface
);
242 system_flush_routes();
246 __interface_set_down(struct interface
*iface
, bool force
)
248 enum interface_state state
= iface
->state
;
252 iface
->state
= IFS_TEARDOWN
;
254 interface_event(iface
, IFEV_DOWN
);
256 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, force
);
258 interface_flush_state(iface
);
261 vlist_delete(&interfaces
, &iface
->node
);
265 if (iface
->main_dev
.dev
)
266 device_release(&iface
->main_dev
);
274 __interface_set_up(struct interface
*iface
)
278 netifd_log_message(L_NOTICE
, "Interface '%s' is setting up now\n", iface
->name
);
280 iface
->state
= IFS_SETUP
;
281 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
283 mark_interface_down(iface
);
289 interface_check_state(struct interface
*iface
)
291 bool link_state
= iface
->link_state
|| iface
->force_link
;
293 switch (iface
->state
) {
296 if (!iface
->enabled
|| !link_state
) {
297 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
298 mark_interface_down(iface
);
302 if (!iface
->available
)
305 if (iface
->autostart
&& iface
->enabled
&& link_state
&& !config_init
)
306 __interface_set_up(iface
);
314 interface_set_enabled(struct interface
*iface
, bool new_state
)
316 if (iface
->enabled
== new_state
)
319 netifd_log_message(L_NOTICE
, "Interface '%s' is %s\n", iface
->name
, new_state
? "enabled" : "disabled");
320 iface
->enabled
= new_state
;
321 interface_check_state(iface
);
325 interface_set_link_state(struct interface
*iface
, bool new_state
)
327 if (iface
->link_state
== new_state
)
330 netifd_log_message(L_NOTICE
, "Interface '%s' has link connectivity %s\n", iface
->name
, new_state
? "" : "loss");
331 iface
->link_state
= new_state
;
332 interface_check_state(iface
);
336 interface_ext_cb(struct device_user
*dep
, enum device_event ev
)
338 if (ev
== DEV_EVENT_REMOVE
)
339 device_remove_user(dep
);
343 interface_cb(struct device_user
*dep
, enum device_event ev
)
345 struct interface
*iface
;
346 bool new_state
= false;
348 iface
= container_of(dep
, struct interface
, main_dev
);
352 case DEV_EVENT_REMOVE
:
353 interface_set_available(iface
, new_state
);
354 if (!new_state
&& dep
->dev
&& dep
->dev
->external
)
355 interface_set_main_dev(iface
, NULL
);
360 interface_set_enabled(iface
, new_state
);
362 case DEV_EVENT_LINK_UP
:
364 case DEV_EVENT_LINK_DOWN
:
365 interface_set_link_state(iface
, new_state
);
367 case DEV_EVENT_TOPO_CHANGE
:
368 interface_proto_event(iface
->proto
, PROTO_CMD_RENEW
, false);
376 interface_set_available(struct interface
*iface
, bool new_state
)
378 if (iface
->available
== new_state
)
381 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
382 iface
->available
= new_state
;
385 if (iface
->autostart
&& !config_init
)
386 interface_set_up(iface
);
388 __interface_set_down(iface
, true);
392 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
395 list_add(&dep
->list
, &iface_all_users
);
400 list_add(&dep
->list
, &iface
->users
);
401 if (iface
->state
== IFS_UP
)
402 dep
->cb(dep
, iface
, IFEV_UP
);
406 interface_remove_user(struct interface_user
*dep
)
408 list_del_init(&dep
->list
);
413 interface_add_assignment_classes(struct interface
*iface
, struct blob_attr
*list
)
415 struct blob_attr
*cur
;
418 blobmsg_for_each_attr(cur
, list
, rem
) {
419 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
422 if (!blobmsg_check_attr(cur
, NULL
))
425 struct interface_assignment_class
*c
= malloc(sizeof(*c
) + blobmsg_data_len(cur
));
426 memcpy(c
->name
, blobmsg_data(cur
), blobmsg_data_len(cur
));
427 list_add(&c
->head
, &iface
->assignment_classes
);
432 interface_clear_assignment_classes(struct interface
*iface
)
434 while (!list_empty(&iface
->assignment_classes
)) {
435 struct interface_assignment_class
*c
= list_first_entry(&iface
->assignment_classes
,
436 struct interface_assignment_class
, head
);
443 interface_merge_assignment_data(struct interface
*old
, struct interface
*new)
445 bool changed
= (old
->assignment_hint
!= new->assignment_hint
||
446 old
->assignment_length
!= new->assignment_length
||
447 old
->assignment_iface_id_selection
!= new->assignment_iface_id_selection
||
448 (old
->assignment_iface_id_selection
== IFID_FIXED
&&
449 memcmp(&old
->assignment_fixed_iface_id
, &new->assignment_fixed_iface_id
,
450 sizeof(old
->assignment_fixed_iface_id
))) ||
451 list_empty(&old
->assignment_classes
) != list_empty(&new->assignment_classes
));
453 struct interface_assignment_class
*c
;
454 list_for_each_entry(c
, &new->assignment_classes
, head
) {
455 // Compare list entries one-by-one to see if there was a change
456 if (list_empty(&old
->assignment_classes
)) // The new list is longer
462 struct interface_assignment_class
*c_old
= list_first_entry(&old
->assignment_classes
,
463 struct interface_assignment_class
, head
);
465 if (strcmp(c_old
->name
, c
->name
)) // An entry didn't match
468 list_del(&c_old
->head
);
472 // The old list was longer than the new one or the last entry didn't match
473 if (!list_empty(&old
->assignment_classes
)) {
474 interface_clear_assignment_classes(old
);
478 list_splice_init(&new->assignment_classes
, &old
->assignment_classes
);
481 old
->assignment_hint
= new->assignment_hint
;
482 old
->assignment_length
= new->assignment_length
;
483 old
->assignment_iface_id_selection
= new->assignment_iface_id_selection
;
484 old
->assignment_fixed_iface_id
= new->assignment_fixed_iface_id
;
485 interface_refresh_assignments(true);
490 interface_alias_cb(struct interface_user
*dep
, struct interface
*iface
, enum interface_event ev
)
492 struct interface
*alias
= container_of(dep
, struct interface
, parent_iface
);
493 struct device
*dev
= iface
->l3_dev
.dev
;
500 interface_set_main_dev(alias
, dev
);
501 interface_set_available(alias
, true);
504 interface_set_available(alias
, false);
505 interface_set_main_dev(alias
, NULL
);
508 interface_remove_user(dep
);
517 interface_set_device_config(struct interface
*iface
, struct device
*dev
)
519 if (!dev
|| !dev
->default_config
)
522 if (!iface
->device_config
&&
523 (!dev
->iface_config
|| dev
->config_iface
!= iface
))
526 dev
->config_iface
= iface
;
527 dev
->iface_config
= iface
->device_config
;
528 device_apply_config(dev
, dev
->type
, iface
->config
);
532 interface_claim_device(struct interface
*iface
)
534 struct interface
*parent
;
535 struct device
*dev
= NULL
;
537 if (iface
->parent_iface
.iface
)
538 interface_remove_user(&iface
->parent_iface
);
540 if (iface
->parent_ifname
) {
541 parent
= vlist_find(&interfaces
, iface
->parent_ifname
, parent
, node
);
542 iface
->parent_iface
.cb
= interface_alias_cb
;
543 interface_add_user(&iface
->parent_iface
, parent
);
544 } else if (iface
->ifname
&&
545 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
546 dev
= device_get(iface
->ifname
, true);
547 interface_set_device_config(iface
, dev
);
549 dev
= iface
->ext_dev
.dev
;
553 interface_set_main_dev(iface
, dev
);
555 if (iface
->proto_handler
->flags
& PROTO_FLAG_INIT_AVAILABLE
)
556 interface_set_available(iface
, true);
560 interface_cleanup_state(struct interface
*iface
)
562 interface_set_available(iface
, false);
564 interface_flush_state(iface
);
565 interface_clear_errors(iface
);
566 interface_set_proto_state(iface
, NULL
);
568 interface_set_main_dev(iface
, NULL
);
569 interface_set_l3_dev(iface
, NULL
);
573 interface_cleanup(struct interface
*iface
)
575 struct interface_user
*dep
, *tmp
;
577 uloop_timeout_cancel(&iface
->remove_timer
);
578 device_remove_user(&iface
->ext_dev
);
580 if (iface
->parent_iface
.iface
)
581 interface_remove_user(&iface
->parent_iface
);
583 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
584 interface_remove_user(dep
);
586 interface_clear_assignment_classes(iface
);
587 interface_ip_flush(&iface
->config_ip
);
588 interface_cleanup_state(iface
);
592 interface_do_free(struct interface
*iface
)
594 interface_event(iface
, IFEV_FREE
);
595 interface_cleanup(iface
);
597 netifd_ubus_remove_interface(iface
);
598 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
603 interface_do_reload(struct interface
*iface
)
605 interface_event(iface
, IFEV_RELOAD
);
606 interface_cleanup_state(iface
);
607 proto_init_interface(iface
, iface
->config
);
608 interface_claim_device(iface
);
612 interface_handle_config_change(struct interface
*iface
)
614 enum interface_config_state state
= iface
->config_state
;
616 iface
->config_state
= IFC_NORMAL
;
621 interface_do_reload(iface
);
624 interface_do_free(iface
);
627 if (iface
->autostart
&& iface
->available
)
628 interface_set_up(iface
);
632 interface_proto_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
634 struct interface
*iface
= state
->iface
;
638 if (iface
->state
!= IFS_SETUP
) {
639 interface_event(iface
, IFEV_UPDATE
);
643 if (!iface
->l3_dev
.dev
)
644 interface_set_l3_dev(iface
, iface
->main_dev
.dev
);
646 interface_ip_set_enabled(&iface
->config_ip
, true);
647 system_flush_routes();
648 iface
->state
= IFS_UP
;
649 iface
->start_time
= system_get_rtime();
650 interface_event(iface
, IFEV_UP
);
651 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
654 if (iface
->state
== IFS_DOWN
)
657 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
658 mark_interface_down(iface
);
659 if (iface
->main_dev
.dev
)
660 device_release(&iface
->main_dev
);
661 if (iface
->l3_dev
.dev
)
662 device_remove_user(&iface
->l3_dev
);
663 interface_handle_config_change(iface
);
665 case IFPEV_LINK_LOST
:
666 if (iface
->state
!= IFS_UP
)
669 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
670 mark_interface_down(iface
);
671 iface
->state
= IFS_SETUP
;
677 interface_write_resolv_conf();
680 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
683 iface
->proto
->free(iface
->proto
);
686 iface
->state
= IFS_DOWN
;
687 iface
->proto
= state
;
691 state
->proto_event
= interface_proto_cb
;
692 state
->iface
= iface
;
696 interface_alloc(const char *name
, struct blob_attr
*config
)
698 struct interface
*iface
;
699 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
700 struct blob_attr
*cur
;
701 const char *proto_name
= NULL
;
703 bool force_link
= false;
705 iface
= calloc_a(sizeof(*iface
), &iface_name
, strlen(name
) + 1);
706 iface
->name
= strcpy(iface_name
, name
);
707 INIT_LIST_HEAD(&iface
->errors
);
708 INIT_LIST_HEAD(&iface
->users
);
709 INIT_LIST_HEAD(&iface
->hotplug_list
);
710 INIT_LIST_HEAD(&iface
->assignment_classes
);
711 interface_ip_init(iface
);
712 avl_init(&iface
->data
, avl_strcmp
, false, NULL
);
713 iface
->config_ip
.enabled
= false;
715 iface
->main_dev
.cb
= interface_cb
;
716 iface
->ext_dev
.cb
= interface_ext_cb
;
718 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
719 blob_data(config
), blob_len(config
));
721 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
722 proto_name
= blobmsg_data(cur
);
724 proto_attach_interface(iface
, proto_name
);
725 if (iface
->proto_handler
->flags
& PROTO_FLAG_FORCE_LINK_DEFAULT
)
728 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
729 iface
->force_link
= blobmsg_get_bool_default(tb
[IFACE_ATTR_FORCE_LINK
], force_link
);
730 iface
->proto_ip
.no_defaultroute
=
731 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
732 iface
->proto_ip
.no_dns
=
733 !blobmsg_get_bool_default(tb
[IFACE_ATTR_PEERDNS
], true);
735 if ((cur
= tb
[IFACE_ATTR_DNS
]))
736 interface_add_dns_server_list(&iface
->config_ip
, cur
);
738 if ((cur
= tb
[IFACE_ATTR_DNS_SEARCH
]))
739 interface_add_dns_search_list(&iface
->config_ip
, cur
);
741 if ((cur
= tb
[IFACE_ATTR_METRIC
]))
742 iface
->metric
= blobmsg_get_u32(cur
);
744 if ((cur
= tb
[IFACE_ATTR_IP6ASSIGN
]))
745 iface
->assignment_length
= blobmsg_get_u32(cur
);
748 iface
->assignment_iface_id_selection
= IFID_FIXED
;
749 iface
->assignment_fixed_iface_id
= in6addr_any
;
750 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
752 if ((cur
= tb
[IFACE_ATTR_IP6IFACEID
])) {
753 const char *ifaceid
= blobmsg_data(cur
);
754 if (!strcmp(ifaceid
, "random")) {
755 iface
->assignment_iface_id_selection
= IFID_RANDOM
;
757 else if (!strcmp(ifaceid
, "eui64")) {
758 iface
->assignment_iface_id_selection
= IFID_EUI64
;
761 /* we expect an IPv6 address with network id zero here -> fixed iface id
762 if we cannot parse -> revert to iface id 1 */
763 if (inet_pton(AF_INET6
,ifaceid
,&iface
->assignment_fixed_iface_id
) != 1 ||
764 iface
->assignment_fixed_iface_id
.s6_addr32
[0] != 0 ||
765 iface
->assignment_fixed_iface_id
.s6_addr32
[1] != 0) {
766 iface
->assignment_fixed_iface_id
= in6addr_any
;
767 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
768 netifd_log_message(L_WARNING
, "Failed to parse ip6ifaceid for interface '%s', \
769 falling back to iface id 1.\n", iface
->name
);
774 iface
->assignment_hint
= -1;
775 if ((cur
= tb
[IFACE_ATTR_IP6HINT
]))
776 iface
->assignment_hint
= strtol(blobmsg_get_string(cur
), NULL
, 16) &
777 ~((1 << (64 - iface
->assignment_length
)) - 1);
779 if ((cur
= tb
[IFACE_ATTR_IP6CLASS
]))
780 interface_add_assignment_classes(iface
, cur
);
783 if ((cur
= tb
[IFACE_ATTR_IP4TABLE
])) {
784 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip4table
))
785 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
788 if ((cur
= tb
[IFACE_ATTR_IP6TABLE
])) {
789 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip6table
))
790 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
793 iface
->proto_ip
.no_delegation
= !blobmsg_get_bool_default(tb
[IFACE_ATTR_DELEGATE
], true);
795 iface
->config_autostart
= iface
->autostart
;
799 void interface_set_dynamic(struct interface
*iface
)
801 iface
->dynamic
= true;
802 iface
->autostart
= true;
803 iface
->node
.version
= -1; // Don't delete on reload
806 static bool __interface_add(struct interface
*iface
, struct blob_attr
*config
, bool alias
)
808 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
809 struct blob_attr
*cur
;
811 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
812 blob_data(config
), blob_len(config
));
815 if ((cur
= tb
[IFACE_ATTR_INTERFACE
]))
816 iface
->parent_ifname
= blobmsg_data(cur
);
818 if (!iface
->parent_ifname
)
821 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
822 iface
->ifname
= blobmsg_data(cur
);
826 iface
->config
= config
;
827 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
832 interface_add(struct interface
*iface
, struct blob_attr
*config
)
834 __interface_add(iface
, config
, false);
838 interface_add_alias(struct interface
*iface
, struct blob_attr
*config
)
840 if (iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)
843 return __interface_add(iface
, config
, true);
847 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
849 bool enabled
= iface
->config_ip
.enabled
;
850 bool claimed
= iface
->l3_dev
.claimed
;
852 if (iface
->l3_dev
.dev
== dev
)
855 interface_ip_set_enabled(&iface
->config_ip
, false);
856 interface_ip_flush(&iface
->proto_ip
);
857 device_add_user(&iface
->l3_dev
, dev
);
861 if (device_claim(&iface
->l3_dev
) < 0)
864 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
869 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
871 bool claimed
= iface
->l3_dev
.claimed
;
873 if (iface
->main_dev
.dev
== dev
)
876 interface_set_available(iface
, false);
877 device_add_user(&iface
->main_dev
, dev
);
879 interface_set_link_state(iface
, false);
884 if (device_claim(&iface
->l3_dev
) < 0)
888 if (!iface
->l3_dev
.dev
)
889 interface_set_l3_dev(iface
, dev
);
893 interface_remove_link(struct interface
*iface
, struct device
*dev
)
895 struct device
*mdev
= iface
->main_dev
.dev
;
897 if (mdev
&& mdev
->hotplug_ops
)
898 return mdev
->hotplug_ops
->del(mdev
, dev
);
900 if (dev
== iface
->ext_dev
.dev
)
901 device_remove_user(&iface
->ext_dev
);
903 if (!iface
->main_dev
.hotplug
)
904 return UBUS_STATUS_INVALID_ARGUMENT
;
906 if (dev
!= iface
->main_dev
.dev
)
907 return UBUS_STATUS_INVALID_ARGUMENT
;
909 interface_set_main_dev(iface
, NULL
);
914 interface_add_link(struct interface
*iface
, struct device
*dev
, bool link_ext
)
916 struct device
*mdev
= iface
->main_dev
.dev
;
921 if (iface
->main_dev
.hotplug
)
922 device_remove_user(&iface
->main_dev
);
925 if (mdev
->hotplug_ops
)
926 return mdev
->hotplug_ops
->add(mdev
, dev
);
928 return UBUS_STATUS_NOT_SUPPORTED
;
932 device_add_user(&iface
->ext_dev
, dev
);
934 interface_set_main_dev(iface
, dev
);
935 iface
->main_dev
.hotplug
= true;
940 interface_handle_link(struct interface
*iface
, const char *name
, bool add
, bool link_ext
)
947 dev
= device_get(name
, add
? (link_ext
? 2 : 1) : 0);
949 ret
= UBUS_STATUS_NOT_FOUND
;
954 interface_set_device_config(iface
, dev
);
955 device_set_present(dev
, true);
957 ret
= interface_add_link(iface
, dev
, link_ext
);
959 ret
= interface_remove_link(iface
, dev
);
969 interface_set_up(struct interface
*iface
)
973 iface
->autostart
= true;
975 if (iface
->state
!= IFS_DOWN
)
978 interface_clear_errors(iface
);
979 if (!iface
->available
) {
980 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
984 if (iface
->main_dev
.dev
) {
985 ret
= device_claim(&iface
->main_dev
);
987 interface_check_state(iface
);
990 ret
= __interface_set_up(iface
);
996 interface_set_down(struct interface
*iface
)
999 vlist_for_each_element(&interfaces
, iface
, node
)
1000 __interface_set_down(iface
, false);
1002 iface
->autostart
= false;
1003 __interface_set_down(iface
, false);
1010 interface_start_pending(void)
1012 struct interface
*iface
;
1014 vlist_for_each_element(&interfaces
, iface
, node
) {
1015 if (iface
->available
&& iface
->autostart
)
1016 interface_set_up(iface
);
1021 set_config_state(struct interface
*iface
, enum interface_config_state s
)
1023 iface
->config_state
= s
;
1024 if (iface
->state
== IFS_DOWN
)
1025 interface_handle_config_change(iface
);
1027 __interface_set_down(iface
, false);
1031 interface_update_start(struct interface
*iface
)
1034 interface_ip_update_start(&iface
->proto_ip
);
1038 interface_update_complete(struct interface
*iface
)
1040 interface_ip_update_complete(&iface
->proto_ip
);
1044 interface_replace_dns(struct interface_ip_settings
*new, struct interface_ip_settings
*old
)
1046 vlist_simple_replace(&new->dns_servers
, &old
->dns_servers
);
1047 vlist_simple_replace(&new->dns_search
, &old
->dns_search
);
1051 interface_device_config_changed(struct interface
*if_old
, struct interface
*if_new
)
1053 struct blob_attr
*ntb
[__DEV_ATTR_MAX
];
1054 struct blob_attr
*otb
[__DEV_ATTR_MAX
];
1055 struct device
*dev
= if_old
->main_dev
.dev
;
1056 unsigned long diff
= 0;
1058 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ 8);
1063 if (if_old
->device_config
!= if_new
->device_config
)
1066 if (!if_new
->device_config
)
1069 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb
,
1070 blob_data(if_old
->config
), blob_len(if_old
->config
));
1072 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, ntb
,
1073 blob_data(if_new
->config
), blob_len(if_new
->config
));
1075 uci_blob_diff(ntb
, otb
, &device_attr_list
, &diff
);
1080 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
1082 struct blob_attr
*old_config
= if_old
->config
;
1083 bool reload
= false, reload_ip
= false;
1085 #define FIELD_CHANGED_STR(field) \
1086 ((!!if_old->field != !!if_new->field) || \
1088 strcmp(if_old->field, if_new->field) != 0))
1090 if (FIELD_CHANGED_STR(parent_ifname
)) {
1091 if (if_old
->parent_iface
.iface
)
1092 interface_remove_user(&if_old
->parent_iface
);
1096 if (!reload
&& interface_device_config_changed(if_old
, if_new
))
1099 if (FIELD_CHANGED_STR(ifname
) ||
1100 if_old
->proto_handler
!= if_new
->proto_handler
)
1103 if (!if_old
->proto_handler
->config_params
)
1104 D(INTERFACE
, "No config parameters for interface '%s'\n",
1106 else if (!uci_blob_check_equal(if_old
->config
, if_new
->config
,
1107 if_old
->proto_handler
->config_params
))
1110 #define UPDATE(field, __var) ({ \
1111 bool __changed = (if_old->field != if_new->field); \
1112 if_old->field = if_new->field; \
1113 __var |= __changed; \
1116 if_old
->config
= if_new
->config
;
1117 if (if_old
->config_autostart
!= if_new
->config_autostart
) {
1118 if (if_old
->config_autostart
)
1121 if_old
->autostart
= if_new
->config_autostart
;
1124 if_old
->device_config
= if_new
->device_config
;
1125 if_old
->config_autostart
= if_new
->config_autostart
;
1126 if_old
->ifname
= if_new
->ifname
;
1127 if_old
->parent_ifname
= if_new
->parent_ifname
;
1128 if_old
->proto_handler
= if_new
->proto_handler
;
1129 if_old
->force_link
= if_new
->force_link
;
1131 if_old
->proto_ip
.no_dns
= if_new
->proto_ip
.no_dns
;
1132 interface_replace_dns(&if_old
->config_ip
, &if_new
->config_ip
);
1134 UPDATE(metric
, reload_ip
);
1135 UPDATE(proto_ip
.no_defaultroute
, reload_ip
);
1136 UPDATE(ip4table
, reload_ip
);
1137 UPDATE(ip6table
, reload_ip
);
1138 interface_merge_assignment_data(if_old
, if_new
);
1143 D(INTERFACE
, "Reload interface '%s' because of config changes\n",
1145 interface_clear_errors(if_old
);
1146 set_config_state(if_old
, IFC_RELOAD
);
1151 bool config_ip_enabled
= if_old
->config_ip
.enabled
;
1152 bool proto_ip_enabled
= if_old
->proto_ip
.enabled
;
1154 interface_ip_set_enabled(&if_old
->config_ip
, false);
1155 interface_ip_set_enabled(&if_old
->proto_ip
, false);
1156 interface_ip_set_enabled(&if_old
->proto_ip
, proto_ip_enabled
);
1157 interface_ip_set_enabled(&if_old
->config_ip
, config_ip_enabled
);
1160 interface_write_resolv_conf();
1161 if (if_old
->main_dev
.dev
)
1162 interface_check_state(if_old
);
1165 if_new
->config
= NULL
;
1166 interface_cleanup(if_new
);
1172 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
1173 struct vlist_node
*node_old
)
1175 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
1176 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
1178 if (node_old
&& node_new
) {
1179 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
1180 interface_change_config(if_old
, if_new
);
1181 } else if (node_old
) {
1182 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
1183 set_config_state(if_old
, IFC_REMOVE
);
1184 } else if (node_new
) {
1185 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
1186 proto_init_interface(if_new
, if_new
->config
);
1187 interface_claim_device(if_new
);
1188 netifd_ubus_add_interface(if_new
);
1194 interface_init_list(void)
1196 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
1197 interfaces
.keep_old
= true;
1198 interfaces
.no_delete
= true;