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 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
72 [IFACE_ATTR_DNS] = { .type = BLOBMSG_TYPE_STRING },
73 [IFACE_ATTR_IP6CLASS] = { .type = BLOBMSG_TYPE_STRING },
76 const struct uci_blob_param_list interface_attr_list = {
77 .n_params = IFACE_ATTR_MAX,
78 .params = iface_attrs,
79 .info = iface_attr_info,
83 interface_error_flush(struct interface *iface)
85 struct interface_error *error, *tmp;
87 list_for_each_entry_safe(error, tmp, &iface->errors, list) {
88 list_del(&error->list);
94 interface_clear_errors(struct interface *iface)
96 /* don't flush the errors in case the configured protocol handler matches the
97 running protocol handler and is having the last error capability */
99 (iface->proto->handler->flags & PROTO_FLAG_LASTERROR) &&
100 (iface->proto->handler->name == iface->proto_handler->name)))
101 interface_error_flush(iface);
104 void interface_add_error(struct interface *iface, const char *subsystem,
105 const char *code, const char **data, int n_data)
107 struct interface_error *error;
110 char *dest, *d_subsys, *d_code;
112 /* if the configured protocol handler has the last error support capability,
113 errors should only be added if the running protocol handler matches the
116 (iface->proto->handler->flags & PROTO_FLAG_LASTERROR) &&
117 (iface->proto->handler->name != iface->proto_handler->name))
121 len = n_data * sizeof(char *);
122 datalen = alloca(len);
123 for (i = 0; i < n_data; i++) {
124 datalen[i] = strlen(data[i]) + 1;
129 error = calloc_a(sizeof(*error) + sizeof(char *) + len,
130 &d_subsys, subsystem ? strlen(subsystem) + 1 : 0,
131 &d_code, code ? strlen(code) + 1 : 0);
135 /* Only keep the last flagged error, prevent this list grows unlimitted in case the
136 protocol can't be established (e.g auth failure) */
137 if (iface->proto_handler->flags & PROTO_FLAG_LASTERROR)
138 interface_error_flush(iface);
140 list_add_tail(&error->list, &iface->errors);
142 dest = (char *) &error->data[n_data + 1];
143 for (i = 0; i < n_data; i++) {
144 error->data[i] = dest;
145 memcpy(dest, data[i], datalen[i]);
148 error->data[n_data++] = NULL;
151 error->subsystem = strcpy(d_subsys, subsystem);
154 error->code = strcpy(d_code, code);
158 interface_data_del(struct interface *iface, struct interface_data *data)
160 avl_delete(&iface->data, &data->node);
165 interface_data_flush(struct interface *iface)
167 struct interface_data *d, *tmp;
169 avl_for_each_element_safe(&iface->data, d, node, tmp)
170 interface_data_del(iface, d);
174 interface_add_data(struct interface *iface, const struct blob_attr *data)
176 struct interface_data *n, *o;
178 if (!blobmsg_check_attr(data, true))
179 return UBUS_STATUS_INVALID_ARGUMENT;
181 const char *name = blobmsg_name(data);
182 unsigned len = blob_pad_len(data);
184 o = avl_find_element(&iface->data, name, o, node);
186 if (blob_pad_len(o->data) == len && !memcmp(o->data, data, len))
189 interface_data_del(iface, o);
192 n = calloc(1, sizeof(*n) + len);
193 memcpy(n->data, data, len);
194 n->node.key = blobmsg_name(n->data);
195 avl_insert(&iface->data, &n->node);
197 iface->updated |= IUF_DATA;
202 interface_event(struct interface *iface, enum interface_event ev)
204 struct interface_user *dep, *tmp;
205 struct device *adev = NULL;
207 list_for_each_entry_safe(dep, tmp, &iface->users, list)
208 dep->cb(dep, iface, ev);
210 list_for_each_entry_safe(dep, tmp, &iface_all_users, list)
211 dep->cb(dep, iface, ev);
215 interface_error_flush(iface);
216 adev = iface->l3_dev.dev;
219 alias_notify_device(iface->name, adev);
227 interface_flush_state(struct interface *iface)
229 if (iface->l3_dev.dev)
230 device_release(&iface->l3_dev);
231 interface_data_flush(iface);
235 mark_interface_down(struct interface *iface)
237 enum interface_state state = iface->state;
239 if (state == IFS_DOWN)
242 iface->state = IFS_DOWN;
244 interface_event(iface, IFEV_DOWN);
245 interface_ip_set_enabled(&iface->config_ip, false);
246 interface_ip_flush(&iface->proto_ip);
247 interface_flush_state(iface);
248 system_flush_routes();
252 __interface_set_down(struct interface *iface, bool force)
254 enum interface_state state = iface->state;
258 iface->state = IFS_TEARDOWN;
260 interface_event(iface, IFEV_DOWN);
262 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
264 interface_flush_state(iface);
267 vlist_delete(&interfaces, &iface->node);
271 if (iface->main_dev.dev)
272 device_release(&iface->main_dev);
280 __interface_set_up(struct interface *iface)
284 netifd_log_message(L_NOTICE, "Interface '%s' is setting up now\n", iface->name);
286 iface->state = IFS_SETUP;
287 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
289 mark_interface_down(iface);
295 interface_check_state(struct interface *iface)
297 bool link_state = iface->link_state || iface->force_link;
299 switch (iface->state) {
302 if (!iface->enabled || !link_state) {
303 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
304 mark_interface_down(iface);
308 if (!iface->available)
311 if (iface->autostart && iface->enabled && link_state && !config_init)
312 __interface_set_up(iface);
320 interface_set_enabled(struct interface *iface, bool new_state)
322 if (iface->enabled == new_state)
325 netifd_log_message(L_NOTICE, "Interface '%s' is %s\n", iface->name, new_state ? "enabled" : "disabled");
326 iface->enabled = new_state;
327 interface_check_state(iface);
331 interface_set_link_state(struct interface *iface, bool new_state)
333 if (iface->link_state == new_state)
336 netifd_log_message(L_NOTICE, "Interface '%s' has link connectivity %s\n", iface->name, new_state ? "" : "loss");
337 iface->link_state = new_state;
338 interface_check_state(iface);
342 interface_ext_cb(struct device_user *dep, enum device_event ev)
344 if (ev == DEV_EVENT_REMOVE)
345 device_remove_user(dep);
349 interface_cb(struct device_user *dep, enum device_event ev)
351 struct interface *iface;
352 bool new_state = false;
354 iface = container_of(dep, struct interface, main_dev);
358 case DEV_EVENT_REMOVE:
359 interface_set_available(iface, new_state);
360 if (!new_state && dep->dev && dep->dev->external)
361 interface_set_main_dev(iface, NULL);
366 interface_set_enabled(iface, new_state);
368 case DEV_EVENT_LINK_UP:
370 case DEV_EVENT_LINK_DOWN:
371 interface_set_link_state(iface, new_state);
373 case DEV_EVENT_TOPO_CHANGE:
374 interface_proto_event(iface->proto, PROTO_CMD_RENEW, false);
382 interface_set_available(struct interface *iface, bool new_state)
384 if (iface->available == new_state)
387 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
388 iface->available = new_state;
391 if (iface->autostart && !config_init)
392 interface_set_up(iface);
394 __interface_set_down(iface, true);
398 interface_add_user(struct interface_user *dep, struct interface *iface)
401 list_add(&dep->list, &iface_all_users);
406 list_add(&dep->list, &iface->users);
407 if (iface->state == IFS_UP)
408 dep->cb(dep, iface, IFEV_UP);
412 interface_remove_user(struct interface_user *dep)
414 list_del_init(&dep->list);
419 interface_add_assignment_classes(struct interface *iface, struct blob_attr *list)
421 struct blob_attr *cur;
424 blobmsg_for_each_attr(cur, list, rem) {
425 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
428 if (!blobmsg_check_attr(cur, NULL))
431 struct interface_assignment_class *c = malloc(sizeof(*c) + blobmsg_data_len(cur));
432 memcpy(c->name, blobmsg_data(cur), blobmsg_data_len(cur));
433 list_add(&c->head, &iface->assignment_classes);
438 interface_clear_assignment_classes(struct interface *iface)
440 while (!list_empty(&iface->assignment_classes)) {
441 struct interface_assignment_class *c = list_first_entry(&iface->assignment_classes,
442 struct interface_assignment_class, head);
449 interface_merge_assignment_data(struct interface *old, struct interface *new)
451 bool changed = (old->assignment_hint != new->assignment_hint ||
452 old->assignment_length != new->assignment_length ||
453 old->assignment_iface_id_selection != new->assignment_iface_id_selection ||
454 (old->assignment_iface_id_selection == IFID_FIXED &&
455 memcmp(&old->assignment_fixed_iface_id, &new->assignment_fixed_iface_id,
456 sizeof(old->assignment_fixed_iface_id))) ||
457 list_empty(&old->assignment_classes) != list_empty(&new->assignment_classes));
459 struct interface_assignment_class *c;
460 list_for_each_entry(c, &new->assignment_classes, head) {
461 // Compare list entries one-by-one to see if there was a change
462 if (list_empty(&old->assignment_classes)) // The new list is longer
468 struct interface_assignment_class *c_old = list_first_entry(&old->assignment_classes,
469 struct interface_assignment_class, head);
471 if (strcmp(c_old->name, c->name)) // An entry didn't match
474 list_del(&c_old->head);
478 // The old list was longer than the new one or the last entry didn't match
479 if (!list_empty(&old->assignment_classes)) {
480 interface_clear_assignment_classes(old);
484 list_splice_init(&new->assignment_classes, &old->assignment_classes);
487 old->assignment_hint = new->assignment_hint;
488 old->assignment_length = new->assignment_length;
489 old->assignment_iface_id_selection = new->assignment_iface_id_selection;
490 old->assignment_fixed_iface_id = new->assignment_fixed_iface_id;
491 interface_refresh_assignments(true);
496 interface_alias_cb(struct interface_user *dep, struct interface *iface, enum interface_event ev)
498 struct interface *alias = container_of(dep, struct interface, parent_iface);
499 struct device *dev = iface->l3_dev.dev;
506 interface_set_main_dev(alias, dev);
507 interface_set_available(alias, true);
510 interface_set_available(alias, false);
511 interface_set_main_dev(alias, NULL);
514 interface_remove_user(dep);
523 interface_set_device_config(struct interface *iface, struct device *dev)
525 if (!dev || !dev->default_config)
528 if (!iface->device_config &&
529 (!dev->iface_config || dev->config_iface != iface))
532 dev->config_iface = iface;
533 dev->iface_config = iface->device_config;
534 device_apply_config(dev, dev->type, iface->config);
538 interface_claim_device(struct interface *iface)
540 struct interface *parent;
541 struct device *dev = NULL;
543 if (iface->parent_iface.iface)
544 interface_remove_user(&iface->parent_iface);
546 if (iface->parent_ifname) {
547 parent = vlist_find(&interfaces, iface->parent_ifname, parent, node);
548 iface->parent_iface.cb = interface_alias_cb;
549 interface_add_user(&iface->parent_iface, parent);
550 } else if (iface->ifname &&
551 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
552 dev = device_get(iface->ifname, true);
553 interface_set_device_config(iface, dev);
555 dev = iface->ext_dev.dev;
559 interface_set_main_dev(iface, dev);
561 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
562 interface_set_available(iface, true);
566 interface_cleanup_state(struct interface *iface)
568 interface_set_available(iface, false);
570 interface_flush_state(iface);
571 interface_clear_errors(iface);
572 interface_set_proto_state(iface, NULL);
574 interface_set_main_dev(iface, NULL);
575 interface_set_l3_dev(iface, NULL);
579 interface_cleanup(struct interface *iface)
581 struct interface_user *dep, *tmp;
583 uloop_timeout_cancel(&iface->remove_timer);
584 device_remove_user(&iface->ext_dev);
586 if (iface->parent_iface.iface)
587 interface_remove_user(&iface->parent_iface);
589 list_for_each_entry_safe(dep, tmp, &iface->users, list)
590 interface_remove_user(dep);
592 interface_clear_assignment_classes(iface);
593 interface_ip_flush(&iface->config_ip);
594 interface_cleanup_state(iface);
598 interface_do_free(struct interface *iface)
600 interface_event(iface, IFEV_FREE);
601 interface_cleanup(iface);
603 netifd_ubus_remove_interface(iface);
604 avl_delete(&interfaces.avl, &iface->node.avl);
609 interface_do_reload(struct interface *iface)
611 interface_event(iface, IFEV_RELOAD);
612 interface_cleanup_state(iface);
613 proto_init_interface(iface, iface->config);
614 interface_claim_device(iface);
618 interface_handle_config_change(struct interface *iface)
620 enum interface_config_state state = iface->config_state;
622 iface->config_state = IFC_NORMAL;
627 interface_do_reload(iface);
630 interface_do_free(iface);
633 if (iface->autostart && iface->available)
634 interface_set_up(iface);
638 interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
640 struct interface *iface = state->iface;
644 if (iface->state != IFS_SETUP) {
645 interface_event(iface, IFEV_UPDATE);
649 if (!iface->l3_dev.dev)
650 interface_set_l3_dev(iface, iface->main_dev.dev);
652 interface_ip_set_enabled(&iface->config_ip, true);
653 system_flush_routes();
654 iface->state = IFS_UP;
655 iface->start_time = system_get_rtime();
656 interface_event(iface, IFEV_UP);
657 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
660 if (iface->state == IFS_DOWN)
663 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
664 mark_interface_down(iface);
665 if (iface->main_dev.dev)
666 device_release(&iface->main_dev);
667 if (iface->l3_dev.dev)
668 device_remove_user(&iface->l3_dev);
669 interface_handle_config_change(iface);
671 case IFPEV_LINK_LOST:
672 if (iface->state != IFS_UP)
675 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
676 mark_interface_down(iface);
677 iface->state = IFS_SETUP;
683 interface_write_resolv_conf();
686 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
689 iface->proto->free(iface->proto);
692 iface->state = IFS_DOWN;
693 iface->proto = state;
697 state->proto_event = interface_proto_cb;
698 state->iface = iface;
702 interface_alloc(const char *name, struct blob_attr *config)
704 struct interface *iface;
705 struct blob_attr *tb[IFACE_ATTR_MAX];
706 struct blob_attr *cur;
707 const char *proto_name = NULL;
709 bool force_link = false;
711 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
712 iface->name = strcpy(iface_name, name);
713 INIT_LIST_HEAD(&iface->errors);
714 INIT_LIST_HEAD(&iface->users);
715 INIT_LIST_HEAD(&iface->hotplug_list);
716 INIT_LIST_HEAD(&iface->assignment_classes);
717 interface_ip_init(iface);
718 avl_init(&iface->data, avl_strcmp, false, NULL);
719 iface->config_ip.enabled = false;
721 iface->main_dev.cb = interface_cb;
722 iface->ext_dev.cb = interface_ext_cb;
724 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
725 blob_data(config), blob_len(config));
727 if ((cur = tb[IFACE_ATTR_PROTO]))
728 proto_name = blobmsg_data(cur);
730 proto_attach_interface(iface, proto_name);
731 if (iface->proto_handler->flags & PROTO_FLAG_FORCE_LINK_DEFAULT)
734 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
735 iface->force_link = blobmsg_get_bool_default(tb[IFACE_ATTR_FORCE_LINK], force_link);
736 iface->proto_ip.no_defaultroute =
737 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
738 iface->proto_ip.no_dns =
739 !blobmsg_get_bool_default(tb[IFACE_ATTR_PEERDNS], true);
741 if ((cur = tb[IFACE_ATTR_DNS]))
742 interface_add_dns_server_list(&iface->config_ip, cur);
744 if ((cur = tb[IFACE_ATTR_DNS_SEARCH]))
745 interface_add_dns_search_list(&iface->config_ip, cur);
747 if ((cur = tb[IFACE_ATTR_METRIC]))
748 iface->metric = blobmsg_get_u32(cur);
750 if ((cur = tb[IFACE_ATTR_IP6ASSIGN]))
751 iface->assignment_length = blobmsg_get_u32(cur);
754 iface->assignment_iface_id_selection = IFID_FIXED;
755 iface->assignment_fixed_iface_id = in6addr_any;
756 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
758 if ((cur = tb[IFACE_ATTR_IP6IFACEID])) {
759 const char *ifaceid = blobmsg_data(cur);
760 if (!strcmp(ifaceid, "random")) {
761 iface->assignment_iface_id_selection = IFID_RANDOM;
763 else if (!strcmp(ifaceid, "eui64")) {
764 iface->assignment_iface_id_selection = IFID_EUI64;
767 /* we expect an IPv6 address with network id zero here -> fixed iface id
768 if we cannot parse -> revert to iface id 1 */
769 if (inet_pton(AF_INET6,ifaceid,&iface->assignment_fixed_iface_id) != 1 ||
770 iface->assignment_fixed_iface_id.s6_addr32[0] != 0 ||
771 iface->assignment_fixed_iface_id.s6_addr32[1] != 0) {
772 iface->assignment_fixed_iface_id = in6addr_any;
773 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
774 netifd_log_message(L_WARNING, "Failed to parse ip6ifaceid for interface '%s', \
775 falling back to iface id 1.\n", iface->name);
780 iface->assignment_hint = -1;
781 if ((cur = tb[IFACE_ATTR_IP6HINT]))
782 iface->assignment_hint = strtol(blobmsg_get_string(cur), NULL, 16) &
783 ~((1 << (64 - iface->assignment_length)) - 1);
785 if ((cur = tb[IFACE_ATTR_IP6CLASS]))
786 interface_add_assignment_classes(iface, cur);
789 if ((cur = tb[IFACE_ATTR_IP4TABLE])) {
790 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip4table))
791 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
794 if ((cur = tb[IFACE_ATTR_IP6TABLE])) {
795 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip6table))
796 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
799 iface->proto_ip.no_delegation = !blobmsg_get_bool_default(tb[IFACE_ATTR_DELEGATE], true);
801 iface->config_autostart = iface->autostart;
805 void interface_set_dynamic(struct interface *iface)
807 iface->dynamic = true;
808 iface->autostart = true;
809 iface->node.version = -1; // Don't delete on reload
812 static bool __interface_add(struct interface *iface, struct blob_attr *config, bool alias)
814 struct blob_attr *tb[IFACE_ATTR_MAX];
815 struct blob_attr *cur;
817 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
818 blob_data(config), blob_len(config));
821 if ((cur = tb[IFACE_ATTR_INTERFACE]))
822 iface->parent_ifname = blobmsg_data(cur);
824 if (!iface->parent_ifname)
827 if ((cur = tb[IFACE_ATTR_IFNAME]))
828 iface->ifname = blobmsg_data(cur);
832 iface->config = config;
833 vlist_add(&interfaces, &iface->node, iface->name);
838 interface_add(struct interface *iface, struct blob_attr *config)
840 __interface_add(iface, config, false);
844 interface_add_alias(struct interface *iface, struct blob_attr *config)
846 if (iface->proto_handler->flags & PROTO_FLAG_NODEV)
849 return __interface_add(iface, config, true);
853 interface_set_l3_dev(struct interface *iface, struct device *dev)
855 bool enabled = iface->config_ip.enabled;
856 bool claimed = iface->l3_dev.claimed;
858 if (iface->l3_dev.dev == dev)
861 interface_ip_set_enabled(&iface->config_ip, false);
862 interface_ip_flush(&iface->proto_ip);
863 device_add_user(&iface->l3_dev, dev);
867 if (device_claim(&iface->l3_dev) < 0)
870 interface_ip_set_enabled(&iface->config_ip, enabled);
875 interface_set_main_dev(struct interface *iface, struct device *dev)
877 bool claimed = iface->l3_dev.claimed;
879 if (iface->main_dev.dev == dev)
882 interface_set_available(iface, false);
883 device_add_user(&iface->main_dev, dev);
885 interface_set_link_state(iface, false);
890 if (device_claim(&iface->l3_dev) < 0)
894 if (!iface->l3_dev.dev)
895 interface_set_l3_dev(iface, dev);
899 interface_remove_link(struct interface *iface, struct device *dev)
901 struct device *mdev = iface->main_dev.dev;
903 if (mdev && mdev->hotplug_ops)
904 return mdev->hotplug_ops->del(mdev, dev);
906 if (dev == iface->ext_dev.dev)
907 device_remove_user(&iface->ext_dev);
909 if (!iface->main_dev.hotplug)
910 return UBUS_STATUS_INVALID_ARGUMENT;
912 if (dev != iface->main_dev.dev)
913 return UBUS_STATUS_INVALID_ARGUMENT;
915 interface_set_main_dev(iface, NULL);
920 interface_add_link(struct interface *iface, struct device *dev, bool link_ext)
922 struct device *mdev = iface->main_dev.dev;
927 if (iface->main_dev.hotplug)
928 device_remove_user(&iface->main_dev);
931 if (mdev->hotplug_ops)
932 return mdev->hotplug_ops->add(mdev, dev);
934 return UBUS_STATUS_NOT_SUPPORTED;
938 device_add_user(&iface->ext_dev, dev);
940 interface_set_main_dev(iface, dev);
941 iface->main_dev.hotplug = true;
946 interface_handle_link(struct interface *iface, const char *name, bool add, bool link_ext)
953 dev = device_get(name, add ? (link_ext ? 2 : 1) : 0);
955 ret = UBUS_STATUS_NOT_FOUND;
960 interface_set_device_config(iface, dev);
961 device_set_present(dev, true);
963 ret = interface_add_link(iface, dev, link_ext);
965 ret = interface_remove_link(iface, dev);
975 interface_set_up(struct interface *iface)
979 iface->autostart = true;
981 if (iface->state != IFS_DOWN)
984 interface_clear_errors(iface);
985 if (!iface->available) {
986 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
990 if (iface->main_dev.dev) {
991 ret = device_claim(&iface->main_dev);
993 interface_check_state(iface);
996 ret = __interface_set_up(iface);
1002 interface_set_down(struct interface *iface)
1005 vlist_for_each_element(&interfaces, iface, node)
1006 __interface_set_down(iface, false);
1008 iface->autostart = false;
1009 __interface_set_down(iface, false);
1016 interface_start_pending(void)
1018 struct interface *iface;
1020 vlist_for_each_element(&interfaces, iface, node) {
1021 if (iface->available && iface->autostart)
1022 interface_set_up(iface);
1027 set_config_state(struct interface *iface, enum interface_config_state s)
1029 iface->config_state = s;
1030 if (iface->state == IFS_DOWN)
1031 interface_handle_config_change(iface);
1033 __interface_set_down(iface, false);
1037 interface_update_start(struct interface *iface)
1040 interface_ip_update_start(&iface->proto_ip);
1044 interface_update_complete(struct interface *iface)
1046 interface_ip_update_complete(&iface->proto_ip);
1050 interface_replace_dns(struct interface_ip_settings *new, struct interface_ip_settings *old)
1052 vlist_simple_replace(&new->dns_servers, &old->dns_servers);
1053 vlist_simple_replace(&new->dns_search, &old->dns_search);
1057 interface_device_config_changed(struct interface *if_old, struct interface *if_new)
1059 struct blob_attr *ntb[__DEV_ATTR_MAX];
1060 struct blob_attr *otb[__DEV_ATTR_MAX];
1061 struct device *dev = if_old->main_dev.dev;
1062 unsigned long diff = 0;
1064 BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / 8);
1069 if (if_old->device_config != if_new->device_config)
1072 if (!if_new->device_config)
1075 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb,
1076 blob_data(if_old->config), blob_len(if_old->config));
1078 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, ntb,
1079 blob_data(if_new->config), blob_len(if_new->config));
1081 uci_blob_diff(ntb, otb, &device_attr_list, &diff);
1086 interface_change_config(struct interface *if_old, struct interface *if_new)
1088 struct blob_attr *old_config = if_old->config;
1089 bool reload = false, reload_ip = false;
1091 #define FIELD_CHANGED_STR(field) \
1092 ((!!if_old->field != !!if_new->field) || \
1094 strcmp(if_old->field, if_new->field) != 0))
1096 if (FIELD_CHANGED_STR(parent_ifname)) {
1097 if (if_old->parent_iface.iface)
1098 interface_remove_user(&if_old->parent_iface);
1102 if (!reload && interface_device_config_changed(if_old, if_new))
1105 if (FIELD_CHANGED_STR(ifname) ||
1106 if_old->proto_handler != if_new->proto_handler)
1109 if (!if_old->proto_handler->config_params)
1110 D(INTERFACE, "No config parameters for interface '%s'\n",
1112 else if (!uci_blob_check_equal(if_old->config, if_new->config,
1113 if_old->proto_handler->config_params))
1116 #define UPDATE(field, __var) ({ \
1117 bool __changed = (if_old->field != if_new->field); \
1118 if_old->field = if_new->field; \
1119 __var |= __changed; \
1122 if_old->config = if_new->config;
1123 if (if_old->config_autostart != if_new->config_autostart) {
1124 if (if_old->config_autostart)
1127 if_old->autostart = if_new->config_autostart;
1130 if_old->device_config = if_new->device_config;
1131 if_old->config_autostart = if_new->config_autostart;
1132 if_old->ifname = if_new->ifname;
1133 if_old->parent_ifname = if_new->parent_ifname;
1134 if_old->proto_handler = if_new->proto_handler;
1135 if_old->force_link = if_new->force_link;
1137 if_old->proto_ip.no_dns = if_new->proto_ip.no_dns;
1138 interface_replace_dns(&if_old->config_ip, &if_new->config_ip);
1140 UPDATE(metric, reload_ip);
1141 UPDATE(proto_ip.no_defaultroute, reload_ip);
1142 UPDATE(ip4table, reload_ip);
1143 UPDATE(ip6table, reload_ip);
1144 interface_merge_assignment_data(if_old, if_new);
1149 D(INTERFACE, "Reload interface '%s' because of config changes\n",
1151 interface_clear_errors(if_old);
1152 set_config_state(if_old, IFC_RELOAD);
1157 bool config_ip_enabled = if_old->config_ip.enabled;
1158 bool proto_ip_enabled = if_old->proto_ip.enabled;
1160 interface_ip_set_enabled(&if_old->config_ip, false);
1161 interface_ip_set_enabled(&if_old->proto_ip, false);
1162 interface_ip_set_enabled(&if_old->proto_ip, proto_ip_enabled);
1163 interface_ip_set_enabled(&if_old->config_ip, config_ip_enabled);
1166 interface_write_resolv_conf();
1167 if (if_old->main_dev.dev)
1168 interface_check_state(if_old);
1171 if_new->config = NULL;
1172 interface_cleanup(if_new);
1178 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
1179 struct vlist_node *node_old)
1181 struct interface *if_old = container_of(node_old, struct interface, node);
1182 struct interface *if_new = container_of(node_new, struct interface, node);
1184 if (node_old && node_new) {
1185 D(INTERFACE, "Update interface '%s'\n", if_new->name);
1186 interface_change_config(if_old, if_new);
1187 } else if (node_old) {
1188 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
1189 set_config_state(if_old, IFC_REMOVE);
1190 } else if (node_new) {
1191 D(INTERFACE, "Create interface '%s'\n", if_new->name);
1192 proto_init_interface(if_new, if_new->config);
1193 interface_claim_device(if_new);
1194 netifd_ubus_add_interface(if_new);
1200 interface_init_list(void)
1202 vlist_init(&interfaces, avl_strcmp, interface_update);
1203 interfaces.keep_old = true;
1204 interfaces.no_delete = true;