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_dev_cb(struct device_user
*dep
, enum device_event ev
)
338 if (ev
== DEV_EVENT_REMOVE
)
339 device_remove_user(dep
);
343 interface_main_dev_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_l3_dev_cb(struct device_user
*dep
, enum device_event ev
)
378 struct interface
*iface
;
380 iface
= container_of(dep
, struct interface
, l3_dev
);
381 if (iface
->l3_dev
.dev
== iface
->main_dev
.dev
)
385 case DEV_EVENT_LINK_DOWN
:
386 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, false);
394 interface_set_available(struct interface
*iface
, bool new_state
)
396 if (iface
->available
== new_state
)
399 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
400 iface
->available
= new_state
;
403 if (iface
->autostart
&& !config_init
)
404 interface_set_up(iface
);
406 __interface_set_down(iface
, true);
410 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
413 list_add(&dep
->list
, &iface_all_users
);
418 list_add(&dep
->list
, &iface
->users
);
419 if (iface
->state
== IFS_UP
)
420 dep
->cb(dep
, iface
, IFEV_UP
);
424 interface_remove_user(struct interface_user
*dep
)
426 list_del_init(&dep
->list
);
431 interface_add_assignment_classes(struct interface
*iface
, struct blob_attr
*list
)
433 struct blob_attr
*cur
;
436 blobmsg_for_each_attr(cur
, list
, rem
) {
437 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
440 if (!blobmsg_check_attr(cur
, NULL
))
443 struct interface_assignment_class
*c
= malloc(sizeof(*c
) + blobmsg_data_len(cur
));
444 memcpy(c
->name
, blobmsg_data(cur
), blobmsg_data_len(cur
));
445 list_add(&c
->head
, &iface
->assignment_classes
);
450 interface_clear_assignment_classes(struct interface
*iface
)
452 while (!list_empty(&iface
->assignment_classes
)) {
453 struct interface_assignment_class
*c
= list_first_entry(&iface
->assignment_classes
,
454 struct interface_assignment_class
, head
);
461 interface_merge_assignment_data(struct interface
*old
, struct interface
*new)
463 bool changed
= (old
->assignment_hint
!= new->assignment_hint
||
464 old
->assignment_length
!= new->assignment_length
||
465 old
->assignment_iface_id_selection
!= new->assignment_iface_id_selection
||
466 (old
->assignment_iface_id_selection
== IFID_FIXED
&&
467 memcmp(&old
->assignment_fixed_iface_id
, &new->assignment_fixed_iface_id
,
468 sizeof(old
->assignment_fixed_iface_id
))) ||
469 list_empty(&old
->assignment_classes
) != list_empty(&new->assignment_classes
));
471 struct interface_assignment_class
*c
;
472 list_for_each_entry(c
, &new->assignment_classes
, head
) {
473 // Compare list entries one-by-one to see if there was a change
474 if (list_empty(&old
->assignment_classes
)) // The new list is longer
480 struct interface_assignment_class
*c_old
= list_first_entry(&old
->assignment_classes
,
481 struct interface_assignment_class
, head
);
483 if (strcmp(c_old
->name
, c
->name
)) // An entry didn't match
486 list_del(&c_old
->head
);
490 // The old list was longer than the new one or the last entry didn't match
491 if (!list_empty(&old
->assignment_classes
)) {
492 interface_clear_assignment_classes(old
);
496 list_splice_init(&new->assignment_classes
, &old
->assignment_classes
);
499 old
->assignment_hint
= new->assignment_hint
;
500 old
->assignment_length
= new->assignment_length
;
501 old
->assignment_iface_id_selection
= new->assignment_iface_id_selection
;
502 old
->assignment_fixed_iface_id
= new->assignment_fixed_iface_id
;
503 interface_refresh_assignments(true);
508 interface_alias_cb(struct interface_user
*dep
, struct interface
*iface
, enum interface_event ev
)
510 struct interface
*alias
= container_of(dep
, struct interface
, parent_iface
);
511 struct device
*dev
= iface
->l3_dev
.dev
;
518 interface_set_main_dev(alias
, dev
);
519 interface_set_available(alias
, true);
522 interface_set_available(alias
, false);
523 interface_set_main_dev(alias
, NULL
);
526 interface_remove_user(dep
);
535 interface_set_device_config(struct interface
*iface
, struct device
*dev
)
537 if (!dev
|| !dev
->default_config
)
540 if (!iface
->device_config
&&
541 (!dev
->iface_config
|| dev
->config_iface
!= iface
))
544 dev
->config_iface
= iface
;
545 dev
->iface_config
= iface
->device_config
;
546 device_apply_config(dev
, dev
->type
, iface
->config
);
550 interface_claim_device(struct interface
*iface
)
552 struct interface
*parent
;
553 struct device
*dev
= NULL
;
555 if (iface
->parent_iface
.iface
)
556 interface_remove_user(&iface
->parent_iface
);
558 if (iface
->parent_ifname
) {
559 parent
= vlist_find(&interfaces
, iface
->parent_ifname
, parent
, node
);
560 iface
->parent_iface
.cb
= interface_alias_cb
;
561 interface_add_user(&iface
->parent_iface
, parent
);
562 } else if (iface
->ifname
&&
563 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
564 dev
= device_get(iface
->ifname
, true);
565 interface_set_device_config(iface
, dev
);
567 dev
= iface
->ext_dev
.dev
;
571 interface_set_main_dev(iface
, dev
);
573 if (iface
->proto_handler
->flags
& PROTO_FLAG_INIT_AVAILABLE
)
574 interface_set_available(iface
, true);
578 interface_cleanup_state(struct interface
*iface
)
580 interface_set_available(iface
, false);
582 interface_flush_state(iface
);
583 interface_clear_errors(iface
);
584 interface_set_proto_state(iface
, NULL
);
586 interface_set_main_dev(iface
, NULL
);
587 interface_set_l3_dev(iface
, NULL
);
591 interface_cleanup(struct interface
*iface
)
593 struct interface_user
*dep
, *tmp
;
595 uloop_timeout_cancel(&iface
->remove_timer
);
596 device_remove_user(&iface
->ext_dev
);
598 if (iface
->parent_iface
.iface
)
599 interface_remove_user(&iface
->parent_iface
);
601 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
602 interface_remove_user(dep
);
604 interface_clear_assignment_classes(iface
);
605 interface_ip_flush(&iface
->config_ip
);
606 interface_cleanup_state(iface
);
610 interface_do_free(struct interface
*iface
)
612 interface_event(iface
, IFEV_FREE
);
613 interface_cleanup(iface
);
615 netifd_ubus_remove_interface(iface
);
616 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
621 interface_do_reload(struct interface
*iface
)
623 interface_event(iface
, IFEV_RELOAD
);
624 interface_cleanup_state(iface
);
625 proto_init_interface(iface
, iface
->config
);
626 interface_claim_device(iface
);
630 interface_handle_config_change(struct interface
*iface
)
632 enum interface_config_state state
= iface
->config_state
;
634 iface
->config_state
= IFC_NORMAL
;
639 interface_do_reload(iface
);
642 interface_do_free(iface
);
645 if (iface
->autostart
&& iface
->available
)
646 interface_set_up(iface
);
650 interface_proto_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
652 struct interface
*iface
= state
->iface
;
656 if (iface
->state
!= IFS_SETUP
) {
657 interface_event(iface
, IFEV_UPDATE
);
661 if (!iface
->l3_dev
.dev
)
662 interface_set_l3_dev(iface
, iface
->main_dev
.dev
);
664 interface_ip_set_enabled(&iface
->config_ip
, true);
665 system_flush_routes();
666 iface
->state
= IFS_UP
;
667 iface
->start_time
= system_get_rtime();
668 interface_event(iface
, IFEV_UP
);
669 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
672 if (iface
->state
== IFS_DOWN
)
675 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
676 mark_interface_down(iface
);
677 if (iface
->main_dev
.dev
)
678 device_release(&iface
->main_dev
);
679 if (iface
->l3_dev
.dev
)
680 device_remove_user(&iface
->l3_dev
);
681 interface_handle_config_change(iface
);
683 case IFPEV_LINK_LOST
:
684 if (iface
->state
!= IFS_UP
)
687 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
688 mark_interface_down(iface
);
689 iface
->state
= IFS_SETUP
;
695 interface_write_resolv_conf();
698 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
701 iface
->proto
->free(iface
->proto
);
704 iface
->state
= IFS_DOWN
;
705 iface
->proto
= state
;
709 state
->proto_event
= interface_proto_cb
;
710 state
->iface
= iface
;
714 interface_alloc(const char *name
, struct blob_attr
*config
)
716 struct interface
*iface
;
717 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
718 struct blob_attr
*cur
;
719 const char *proto_name
= NULL
;
721 bool force_link
= false;
723 iface
= calloc_a(sizeof(*iface
), &iface_name
, strlen(name
) + 1);
724 iface
->name
= strcpy(iface_name
, name
);
725 INIT_LIST_HEAD(&iface
->errors
);
726 INIT_LIST_HEAD(&iface
->users
);
727 INIT_LIST_HEAD(&iface
->hotplug_list
);
728 INIT_LIST_HEAD(&iface
->assignment_classes
);
729 interface_ip_init(iface
);
730 avl_init(&iface
->data
, avl_strcmp
, false, NULL
);
731 iface
->config_ip
.enabled
= false;
733 iface
->main_dev
.cb
= interface_main_dev_cb
;
734 iface
->l3_dev
.cb
= interface_l3_dev_cb
;
735 iface
->ext_dev
.cb
= interface_ext_dev_cb
;
737 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
738 blob_data(config
), blob_len(config
));
740 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
741 proto_name
= blobmsg_data(cur
);
743 proto_attach_interface(iface
, proto_name
);
744 if (iface
->proto_handler
->flags
& PROTO_FLAG_FORCE_LINK_DEFAULT
)
747 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
748 iface
->force_link
= blobmsg_get_bool_default(tb
[IFACE_ATTR_FORCE_LINK
], force_link
);
749 iface
->proto_ip
.no_defaultroute
=
750 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
751 iface
->proto_ip
.no_dns
=
752 !blobmsg_get_bool_default(tb
[IFACE_ATTR_PEERDNS
], true);
754 if ((cur
= tb
[IFACE_ATTR_DNS
]))
755 interface_add_dns_server_list(&iface
->config_ip
, cur
);
757 if ((cur
= tb
[IFACE_ATTR_DNS_SEARCH
]))
758 interface_add_dns_search_list(&iface
->config_ip
, cur
);
760 if ((cur
= tb
[IFACE_ATTR_METRIC
]))
761 iface
->metric
= blobmsg_get_u32(cur
);
763 if ((cur
= tb
[IFACE_ATTR_IP6ASSIGN
]))
764 iface
->assignment_length
= blobmsg_get_u32(cur
);
767 iface
->assignment_iface_id_selection
= IFID_FIXED
;
768 iface
->assignment_fixed_iface_id
= in6addr_any
;
769 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
771 if ((cur
= tb
[IFACE_ATTR_IP6IFACEID
])) {
772 const char *ifaceid
= blobmsg_data(cur
);
773 if (!strcmp(ifaceid
, "random")) {
774 iface
->assignment_iface_id_selection
= IFID_RANDOM
;
776 else if (!strcmp(ifaceid
, "eui64")) {
777 iface
->assignment_iface_id_selection
= IFID_EUI64
;
780 /* we expect an IPv6 address with network id zero here -> fixed iface id
781 if we cannot parse -> revert to iface id 1 */
782 if (inet_pton(AF_INET6
,ifaceid
,&iface
->assignment_fixed_iface_id
) != 1 ||
783 iface
->assignment_fixed_iface_id
.s6_addr32
[0] != 0 ||
784 iface
->assignment_fixed_iface_id
.s6_addr32
[1] != 0) {
785 iface
->assignment_fixed_iface_id
= in6addr_any
;
786 iface
->assignment_fixed_iface_id
.s6_addr
[15] = 1;
787 netifd_log_message(L_WARNING
, "Failed to parse ip6ifaceid for interface '%s', \
788 falling back to iface id 1.\n", iface
->name
);
793 iface
->assignment_hint
= -1;
794 if ((cur
= tb
[IFACE_ATTR_IP6HINT
]))
795 iface
->assignment_hint
= strtol(blobmsg_get_string(cur
), NULL
, 16) &
796 ~((1 << (64 - iface
->assignment_length
)) - 1);
798 if ((cur
= tb
[IFACE_ATTR_IP6CLASS
]))
799 interface_add_assignment_classes(iface
, cur
);
802 if ((cur
= tb
[IFACE_ATTR_IP4TABLE
])) {
803 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip4table
))
804 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
807 if ((cur
= tb
[IFACE_ATTR_IP6TABLE
])) {
808 if (!system_resolve_rt_table(blobmsg_data(cur
), &iface
->ip6table
))
809 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur
));
812 iface
->proto_ip
.no_delegation
= !blobmsg_get_bool_default(tb
[IFACE_ATTR_DELEGATE
], true);
814 iface
->config_autostart
= iface
->autostart
;
818 void interface_set_dynamic(struct interface
*iface
)
820 iface
->dynamic
= true;
821 iface
->autostart
= true;
822 iface
->node
.version
= -1; // Don't delete on reload
825 static bool __interface_add(struct interface
*iface
, struct blob_attr
*config
, bool alias
)
827 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
828 struct blob_attr
*cur
;
830 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
831 blob_data(config
), blob_len(config
));
834 if ((cur
= tb
[IFACE_ATTR_INTERFACE
]))
835 iface
->parent_ifname
= blobmsg_data(cur
);
837 if (!iface
->parent_ifname
)
840 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
841 iface
->ifname
= blobmsg_data(cur
);
844 iface
->config
= config
;
845 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
850 interface_add(struct interface
*iface
, struct blob_attr
*config
)
852 __interface_add(iface
, config
, false);
856 interface_add_alias(struct interface
*iface
, struct blob_attr
*config
)
858 if (iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)
861 return __interface_add(iface
, config
, true);
865 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
867 bool enabled
= iface
->config_ip
.enabled
;
868 bool claimed
= iface
->l3_dev
.claimed
;
870 if (iface
->l3_dev
.dev
== dev
)
873 interface_ip_set_enabled(&iface
->config_ip
, false);
874 interface_ip_flush(&iface
->proto_ip
);
875 device_add_user(&iface
->l3_dev
, dev
);
879 if (device_claim(&iface
->l3_dev
) < 0)
882 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
887 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
889 bool claimed
= iface
->l3_dev
.claimed
;
891 if (iface
->main_dev
.dev
== dev
)
894 interface_set_available(iface
, false);
895 device_add_user(&iface
->main_dev
, dev
);
897 interface_set_link_state(iface
, false);
902 if (device_claim(&iface
->l3_dev
) < 0)
906 if (!iface
->l3_dev
.dev
)
907 interface_set_l3_dev(iface
, dev
);
911 interface_remove_link(struct interface
*iface
, struct device
*dev
)
913 struct device
*mdev
= iface
->main_dev
.dev
;
915 if (mdev
&& mdev
->hotplug_ops
)
916 return mdev
->hotplug_ops
->del(mdev
, dev
);
918 if (dev
== iface
->ext_dev
.dev
)
919 device_remove_user(&iface
->ext_dev
);
921 if (!iface
->main_dev
.hotplug
)
922 return UBUS_STATUS_INVALID_ARGUMENT
;
924 if (dev
!= iface
->main_dev
.dev
)
925 return UBUS_STATUS_INVALID_ARGUMENT
;
927 interface_set_main_dev(iface
, NULL
);
932 interface_add_link(struct interface
*iface
, struct device
*dev
, bool link_ext
)
934 struct device
*mdev
= iface
->main_dev
.dev
;
939 if (iface
->main_dev
.hotplug
)
940 device_remove_user(&iface
->main_dev
);
943 if (mdev
->hotplug_ops
)
944 return mdev
->hotplug_ops
->add(mdev
, dev
);
946 return UBUS_STATUS_NOT_SUPPORTED
;
950 device_add_user(&iface
->ext_dev
, dev
);
952 interface_set_main_dev(iface
, dev
);
953 iface
->main_dev
.hotplug
= true;
958 interface_handle_link(struct interface
*iface
, const char *name
, bool add
, bool link_ext
)
965 dev
= device_get(name
, add
? (link_ext
? 2 : 1) : 0);
967 ret
= UBUS_STATUS_NOT_FOUND
;
972 interface_set_device_config(iface
, dev
);
973 device_set_present(dev
, true);
975 ret
= interface_add_link(iface
, dev
, link_ext
);
977 ret
= interface_remove_link(iface
, dev
);
987 interface_set_up(struct interface
*iface
)
991 iface
->autostart
= true;
993 if (iface
->state
!= IFS_DOWN
)
996 interface_clear_errors(iface
);
997 if (!iface
->available
) {
998 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
1002 if (iface
->main_dev
.dev
) {
1003 ret
= device_claim(&iface
->main_dev
);
1005 interface_check_state(iface
);
1008 ret
= __interface_set_up(iface
);
1014 interface_set_down(struct interface
*iface
)
1017 vlist_for_each_element(&interfaces
, iface
, node
)
1018 __interface_set_down(iface
, false);
1020 iface
->autostart
= false;
1021 __interface_set_down(iface
, false);
1028 interface_start_pending(void)
1030 struct interface
*iface
;
1032 vlist_for_each_element(&interfaces
, iface
, node
) {
1033 if (iface
->available
&& iface
->autostart
)
1034 interface_set_up(iface
);
1039 set_config_state(struct interface
*iface
, enum interface_config_state s
)
1041 iface
->config_state
= s
;
1042 if (iface
->state
== IFS_DOWN
)
1043 interface_handle_config_change(iface
);
1045 __interface_set_down(iface
, false);
1049 interface_update_start(struct interface
*iface
)
1052 interface_ip_update_start(&iface
->proto_ip
);
1056 interface_update_complete(struct interface
*iface
)
1058 interface_ip_update_complete(&iface
->proto_ip
);
1062 interface_replace_dns(struct interface_ip_settings
*new, struct interface_ip_settings
*old
)
1064 vlist_simple_replace(&new->dns_servers
, &old
->dns_servers
);
1065 vlist_simple_replace(&new->dns_search
, &old
->dns_search
);
1069 interface_device_config_changed(struct interface
*if_old
, struct interface
*if_new
)
1071 struct blob_attr
*ntb
[__DEV_ATTR_MAX
];
1072 struct blob_attr
*otb
[__DEV_ATTR_MAX
];
1073 struct device
*dev
= if_old
->main_dev
.dev
;
1074 unsigned long diff
= 0;
1076 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ 8);
1081 if (if_old
->device_config
!= if_new
->device_config
)
1084 if (!if_new
->device_config
)
1087 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb
,
1088 blob_data(if_old
->config
), blob_len(if_old
->config
));
1090 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, ntb
,
1091 blob_data(if_new
->config
), blob_len(if_new
->config
));
1093 uci_blob_diff(ntb
, otb
, &device_attr_list
, &diff
);
1098 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
1100 struct blob_attr
*old_config
= if_old
->config
;
1101 bool reload
= false, reload_ip
= false;
1103 #define FIELD_CHANGED_STR(field) \
1104 ((!!if_old->field != !!if_new->field) || \
1106 strcmp(if_old->field, if_new->field) != 0))
1108 if (FIELD_CHANGED_STR(parent_ifname
)) {
1109 if (if_old
->parent_iface
.iface
)
1110 interface_remove_user(&if_old
->parent_iface
);
1114 if (!reload
&& interface_device_config_changed(if_old
, if_new
))
1117 if (FIELD_CHANGED_STR(ifname
) ||
1118 if_old
->proto_handler
!= if_new
->proto_handler
)
1121 if (!if_old
->proto_handler
->config_params
)
1122 D(INTERFACE
, "No config parameters for interface '%s'\n",
1124 else if (!uci_blob_check_equal(if_old
->config
, if_new
->config
,
1125 if_old
->proto_handler
->config_params
))
1128 #define UPDATE(field, __var) ({ \
1129 bool __changed = (if_old->field != if_new->field); \
1130 if_old->field = if_new->field; \
1131 __var |= __changed; \
1134 if_old
->config
= if_new
->config
;
1135 if (if_old
->config_autostart
!= if_new
->config_autostart
) {
1136 if (if_old
->config_autostart
)
1139 if_old
->autostart
= if_new
->config_autostart
;
1142 if_old
->device_config
= if_new
->device_config
;
1143 if_old
->config_autostart
= if_new
->config_autostart
;
1144 if_old
->ifname
= if_new
->ifname
;
1145 if_old
->parent_ifname
= if_new
->parent_ifname
;
1146 if_old
->proto_handler
= if_new
->proto_handler
;
1147 if_old
->force_link
= if_new
->force_link
;
1149 if_old
->proto_ip
.no_dns
= if_new
->proto_ip
.no_dns
;
1150 interface_replace_dns(&if_old
->config_ip
, &if_new
->config_ip
);
1152 UPDATE(metric
, reload_ip
);
1153 UPDATE(proto_ip
.no_defaultroute
, reload_ip
);
1154 UPDATE(ip4table
, reload_ip
);
1155 UPDATE(ip6table
, reload_ip
);
1156 interface_merge_assignment_data(if_old
, if_new
);
1161 D(INTERFACE
, "Reload interface '%s' because of config changes\n",
1163 interface_clear_errors(if_old
);
1164 set_config_state(if_old
, IFC_RELOAD
);
1169 bool config_ip_enabled
= if_old
->config_ip
.enabled
;
1170 bool proto_ip_enabled
= if_old
->proto_ip
.enabled
;
1172 interface_ip_set_enabled(&if_old
->config_ip
, false);
1173 interface_ip_set_enabled(&if_old
->proto_ip
, false);
1174 interface_ip_set_enabled(&if_old
->proto_ip
, proto_ip_enabled
);
1175 interface_ip_set_enabled(&if_old
->config_ip
, config_ip_enabled
);
1178 interface_write_resolv_conf();
1179 if (if_old
->main_dev
.dev
)
1180 interface_check_state(if_old
);
1183 if_new
->config
= NULL
;
1184 interface_cleanup(if_new
);
1190 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
1191 struct vlist_node
*node_old
)
1193 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
1194 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
1196 if (node_old
&& node_new
) {
1197 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
1198 interface_change_config(if_old
, if_new
);
1199 } else if (node_old
) {
1200 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
1201 set_config_state(if_old
, IFC_REMOVE
);
1202 } else if (node_new
) {
1203 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
1204 proto_init_interface(if_new
, if_new
->config
);
1205 interface_claim_device(if_new
);
1206 netifd_ubus_add_interface(if_new
);
1212 interface_init_list(void)
1214 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
1215 interfaces
.keep_old
= true;
1216 interfaces
.no_delete
= true;