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_FORCE_LINK,
50 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
51 [IFACE_ATTR_PROTO] = { .name = "proto", .type = BLOBMSG_TYPE_STRING },
52 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
53 [IFACE_ATTR_AUTO] = { .name = "auto", .type = BLOBMSG_TYPE_BOOL },
54 [IFACE_ATTR_DEFAULTROUTE] = { .name = "defaultroute", .type = BLOBMSG_TYPE_BOOL },
55 [IFACE_ATTR_PEERDNS] = { .name = "peerdns", .type = BLOBMSG_TYPE_BOOL },
56 [IFACE_ATTR_METRIC] = { .name = "metric", .type = BLOBMSG_TYPE_INT32 },
57 [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
58 [IFACE_ATTR_DNS_SEARCH] = { .name = "dns_search", .type = BLOBMSG_TYPE_ARRAY },
59 [IFACE_ATTR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
60 [IFACE_ATTR_IP6ASSIGN] = { .name = "ip6assign", .type = BLOBMSG_TYPE_INT32 },
61 [IFACE_ATTR_IP6HINT] = { .name = "ip6hint", .type = BLOBMSG_TYPE_STRING },
62 [IFACE_ATTR_IP4TABLE] = { .name = "ip4table", .type = BLOBMSG_TYPE_STRING },
63 [IFACE_ATTR_IP6TABLE] = { .name = "ip6table", .type = BLOBMSG_TYPE_STRING },
64 [IFACE_ATTR_IP6CLASS] = { .name = "ip6class", .type = BLOBMSG_TYPE_ARRAY },
65 [IFACE_ATTR_DELEGATE] = { .name = "delegate", .type = BLOBMSG_TYPE_BOOL },
66 [IFACE_ATTR_FORCE_LINK] = { .name = "force_link", .type = BLOBMSG_TYPE_BOOL },
69 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
70 [IFACE_ATTR_DNS] = { .type = BLOBMSG_TYPE_STRING },
71 [IFACE_ATTR_IP6CLASS] = { .type = BLOBMSG_TYPE_STRING },
74 const struct uci_blob_param_list interface_attr_list = {
75 .n_params = IFACE_ATTR_MAX,
76 .params = iface_attrs,
77 .info = iface_attr_info,
81 interface_clear_errors(struct interface *iface)
83 struct interface_error *error, *tmp;
85 list_for_each_entry_safe(error, tmp, &iface->errors, list) {
86 list_del(&error->list);
91 void interface_add_error(struct interface *iface, const char *subsystem,
92 const char *code, const char **data, int n_data)
94 struct interface_error *error;
97 char *dest, *d_subsys, *d_code;
100 len = n_data * sizeof(char *);
101 datalen = alloca(len);
102 for (i = 0; i < n_data; i++) {
103 datalen[i] = strlen(data[i]) + 1;
108 error = calloc_a(sizeof(*error) + sizeof(char *) + len,
109 &d_subsys, subsystem ? strlen(subsystem) + 1 : 0,
110 &d_code, code ? strlen(code) + 1 : 0);
114 list_add_tail(&error->list, &iface->errors);
116 dest = (char *) &error->data[n_data + 1];
117 for (i = 0; i < n_data; i++) {
118 error->data[i] = dest;
119 memcpy(dest, data[i], datalen[i]);
122 error->data[n_data++] = NULL;
125 error->subsystem = strcpy(d_subsys, subsystem);
128 error->code = strcpy(d_code, code);
132 interface_data_del(struct interface *iface, struct interface_data *data)
134 avl_delete(&iface->data, &data->node);
139 interface_data_flush(struct interface *iface)
141 struct interface_data *d, *tmp;
143 avl_for_each_element_safe(&iface->data, d, node, tmp)
144 interface_data_del(iface, d);
148 interface_add_data(struct interface *iface, const struct blob_attr *data)
150 struct interface_data *n, *o;
152 if (!blobmsg_check_attr(data, true))
153 return UBUS_STATUS_INVALID_ARGUMENT;
155 const char *name = blobmsg_name(data);
156 unsigned len = blob_pad_len(data);
158 o = avl_find_element(&iface->data, name, o, node);
160 if (blob_pad_len(o->data) == len && !memcmp(o->data, data, len))
163 interface_data_del(iface, o);
166 n = calloc(1, sizeof(*n) + len);
167 memcpy(n->data, data, len);
168 n->node.key = blobmsg_name(n->data);
169 avl_insert(&iface->data, &n->node);
171 iface->updated |= IUF_DATA;
176 interface_event(struct interface *iface, enum interface_event ev)
178 struct interface_user *dep, *tmp;
179 struct device *adev = NULL;
181 list_for_each_entry_safe(dep, tmp, &iface->users, list)
182 dep->cb(dep, iface, ev);
184 list_for_each_entry_safe(dep, tmp, &iface_all_users, list)
185 dep->cb(dep, iface, ev);
189 adev = iface->l3_dev.dev;
192 alias_notify_device(iface->name, adev);
200 interface_flush_state(struct interface *iface)
202 if (iface->l3_dev.dev)
203 device_release(&iface->l3_dev);
204 interface_data_flush(iface);
208 mark_interface_down(struct interface *iface)
210 enum interface_state state = iface->state;
212 if (state == IFS_DOWN)
215 iface->state = IFS_DOWN;
217 interface_event(iface, IFEV_DOWN);
218 interface_ip_set_enabled(&iface->config_ip, false);
219 interface_ip_flush(&iface->proto_ip);
220 interface_flush_state(iface);
221 system_flush_routes();
225 __interface_set_down(struct interface *iface, bool force)
227 enum interface_state state = iface->state;
231 iface->state = IFS_TEARDOWN;
233 interface_event(iface, IFEV_DOWN);
235 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
237 interface_flush_state(iface);
240 vlist_delete(&interfaces, &iface->node);
244 if (iface->main_dev.dev)
245 device_release(&iface->main_dev);
253 __interface_set_up(struct interface *iface)
257 netifd_log_message(L_NOTICE, "Interface '%s' is setting up now\n", iface->name);
259 iface->state = IFS_SETUP;
260 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
262 mark_interface_down(iface);
268 interface_check_state(struct interface *iface)
270 bool link_state = iface->link_state || iface->force_link;
272 switch (iface->state) {
275 if (!iface->enabled || !link_state) {
276 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
277 mark_interface_down(iface);
281 if (!iface->available)
284 if (iface->autostart && iface->enabled && link_state && !config_init)
285 __interface_set_up(iface);
293 interface_set_enabled(struct interface *iface, bool new_state)
295 if (iface->enabled == new_state)
298 netifd_log_message(L_NOTICE, "Interface '%s' is %s\n", iface->name, new_state ? "enabled" : "disabled");
299 iface->enabled = new_state;
300 interface_check_state(iface);
304 interface_set_link_state(struct interface *iface, bool new_state)
306 if (iface->link_state == new_state)
309 netifd_log_message(L_NOTICE, "Interface '%s' has link connectivity %s\n", iface->name, new_state ? "" : "loss");
310 iface->link_state = new_state;
311 interface_check_state(iface);
315 interface_ext_cb(struct device_user *dep, enum device_event ev)
317 if (ev == DEV_EVENT_REMOVE)
318 device_remove_user(dep);
322 interface_cb(struct device_user *dep, enum device_event ev)
324 struct interface *iface;
325 bool new_state = false;
327 iface = container_of(dep, struct interface, main_dev);
331 case DEV_EVENT_REMOVE:
332 interface_set_available(iface, new_state);
333 if (!new_state && dep->dev && dep->dev->external)
334 interface_set_main_dev(iface, NULL);
339 interface_set_enabled(iface, new_state);
341 case DEV_EVENT_LINK_UP:
343 case DEV_EVENT_LINK_DOWN:
344 interface_set_link_state(iface, new_state);
346 case DEV_EVENT_TOPO_CHANGE:
347 interface_proto_event(iface->proto, PROTO_CMD_RENEW, false);
355 interface_set_available(struct interface *iface, bool new_state)
357 if (iface->available == new_state)
360 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
361 iface->available = new_state;
364 if (iface->autostart && !config_init)
365 interface_set_up(iface);
367 __interface_set_down(iface, true);
371 interface_add_user(struct interface_user *dep, struct interface *iface)
374 list_add(&dep->list, &iface_all_users);
379 list_add(&dep->list, &iface->users);
380 if (iface->state == IFS_UP)
381 dep->cb(dep, iface, IFEV_UP);
385 interface_remove_user(struct interface_user *dep)
387 list_del_init(&dep->list);
392 interface_add_assignment_classes(struct interface *iface, struct blob_attr *list)
394 struct blob_attr *cur;
397 blobmsg_for_each_attr(cur, list, rem) {
398 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
401 if (!blobmsg_check_attr(cur, NULL))
404 struct interface_assignment_class *c = malloc(sizeof(*c) + blobmsg_data_len(cur));
405 memcpy(c->name, blobmsg_data(cur), blobmsg_data_len(cur));
406 list_add(&c->head, &iface->assignment_classes);
411 interface_clear_assignment_classes(struct interface *iface)
413 while (!list_empty(&iface->assignment_classes)) {
414 struct interface_assignment_class *c = list_first_entry(&iface->assignment_classes,
415 struct interface_assignment_class, head);
422 interface_merge_assignment_data(struct interface *old, struct interface *new)
424 bool changed = (old->assignment_hint != new->assignment_hint ||
425 old->assignment_length != new->assignment_length ||
426 list_empty(&old->assignment_classes) != list_empty(&new->assignment_classes));
428 struct interface_assignment_class *c;
429 list_for_each_entry(c, &new->assignment_classes, head) {
430 // Compare list entries one-by-one to see if there was a change
431 if (list_empty(&old->assignment_classes)) // The new list is longer
437 struct interface_assignment_class *c_old = list_first_entry(&old->assignment_classes,
438 struct interface_assignment_class, head);
440 if (strcmp(c_old->name, c->name)) // An entry didn't match
443 list_del(&c_old->head);
447 // The old list was longer than the new one or the last entry didn't match
448 if (!list_empty(&old->assignment_classes)) {
449 interface_clear_assignment_classes(old);
453 list_splice_init(&new->assignment_classes, &old->assignment_classes);
456 old->assignment_hint = new->assignment_hint;
457 old->assignment_length = new->assignment_length;
458 interface_refresh_assignments(true);
463 interface_alias_cb(struct interface_user *dep, struct interface *iface, enum interface_event ev)
465 struct interface *alias = container_of(dep, struct interface, parent_iface);
466 struct device *dev = iface->l3_dev.dev;
473 interface_set_main_dev(alias, dev);
474 interface_set_available(alias, true);
477 interface_set_available(alias, false);
478 interface_set_main_dev(alias, NULL);
481 interface_remove_user(dep);
490 interface_claim_device(struct interface *iface)
492 struct interface *parent;
493 struct device *dev = NULL;
495 if (iface->parent_iface.iface)
496 interface_remove_user(&iface->parent_iface);
498 if (iface->parent_ifname) {
499 parent = vlist_find(&interfaces, iface->parent_ifname, parent, node);
500 iface->parent_iface.cb = interface_alias_cb;
501 interface_add_user(&iface->parent_iface, parent);
502 } else if (iface->ifname &&
503 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
504 dev = device_get(iface->ifname, true);
505 if (dev && dev->default_config && iface->device_config)
506 device_set_config(dev, dev->type, iface->config);
508 dev = iface->ext_dev.dev;
512 interface_set_main_dev(iface, dev);
514 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
515 interface_set_available(iface, true);
519 interface_cleanup_state(struct interface *iface)
521 interface_set_available(iface, false);
523 interface_flush_state(iface);
524 interface_clear_errors(iface);
525 interface_set_proto_state(iface, NULL);
527 interface_set_main_dev(iface, NULL);
528 interface_set_l3_dev(iface, NULL);
532 interface_cleanup(struct interface *iface)
534 struct interface_user *dep, *tmp;
536 uloop_timeout_cancel(&iface->remove_timer);
537 device_remove_user(&iface->ext_dev);
539 if (iface->parent_iface.iface)
540 interface_remove_user(&iface->parent_iface);
542 list_for_each_entry_safe(dep, tmp, &iface->users, list)
543 interface_remove_user(dep);
545 interface_clear_assignment_classes(iface);
546 interface_ip_flush(&iface->config_ip);
547 interface_cleanup_state(iface);
551 interface_do_free(struct interface *iface)
553 interface_event(iface, IFEV_FREE);
554 interface_cleanup(iface);
556 netifd_ubus_remove_interface(iface);
557 avl_delete(&interfaces.avl, &iface->node.avl);
562 interface_do_reload(struct interface *iface)
564 interface_event(iface, IFEV_RELOAD);
565 interface_cleanup_state(iface);
566 proto_init_interface(iface, iface->config);
567 interface_claim_device(iface);
571 interface_handle_config_change(struct interface *iface)
573 enum interface_config_state state = iface->config_state;
575 iface->config_state = IFC_NORMAL;
580 interface_do_reload(iface);
583 interface_do_free(iface);
586 if (iface->autostart && iface->available)
587 interface_set_up(iface);
591 interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
593 struct interface *iface = state->iface;
597 if (iface->state != IFS_SETUP) {
598 interface_event(iface, IFEV_UPDATE);
602 if (!iface->l3_dev.dev)
603 interface_set_l3_dev(iface, iface->main_dev.dev);
605 interface_ip_set_enabled(&iface->config_ip, true);
606 system_flush_routes();
607 iface->state = IFS_UP;
608 iface->start_time = system_get_rtime();
609 interface_event(iface, IFEV_UP);
610 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
613 if (iface->state == IFS_DOWN)
616 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
617 mark_interface_down(iface);
618 if (iface->main_dev.dev)
619 device_release(&iface->main_dev);
620 if (iface->l3_dev.dev)
621 device_remove_user(&iface->l3_dev);
622 interface_handle_config_change(iface);
624 case IFPEV_LINK_LOST:
625 if (iface->state != IFS_UP)
628 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
629 mark_interface_down(iface);
630 iface->state = IFS_SETUP;
636 interface_write_resolv_conf();
639 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
642 iface->proto->free(iface->proto);
645 iface->state = IFS_DOWN;
646 iface->proto = state;
650 state->proto_event = interface_proto_cb;
651 state->iface = iface;
655 interface_alloc(const char *name, struct blob_attr *config)
657 struct interface *iface;
658 struct blob_attr *tb[IFACE_ATTR_MAX];
659 struct blob_attr *cur;
660 const char *proto_name = NULL;
662 bool force_link = false;
664 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
665 iface->name = strcpy(iface_name, name);
666 INIT_LIST_HEAD(&iface->errors);
667 INIT_LIST_HEAD(&iface->users);
668 INIT_LIST_HEAD(&iface->hotplug_list);
669 INIT_LIST_HEAD(&iface->assignment_classes);
670 interface_ip_init(iface);
671 avl_init(&iface->data, avl_strcmp, false, NULL);
672 iface->config_ip.enabled = false;
674 iface->main_dev.cb = interface_cb;
675 iface->ext_dev.cb = interface_ext_cb;
677 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
678 blob_data(config), blob_len(config));
680 if ((cur = tb[IFACE_ATTR_PROTO]))
681 proto_name = blobmsg_data(cur);
683 proto_attach_interface(iface, proto_name);
684 if (iface->proto_handler->flags & PROTO_FLAG_FORCE_LINK_DEFAULT)
687 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
688 iface->force_link = blobmsg_get_bool_default(tb[IFACE_ATTR_FORCE_LINK], force_link);
689 iface->proto_ip.no_defaultroute =
690 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
691 iface->proto_ip.no_dns =
692 !blobmsg_get_bool_default(tb[IFACE_ATTR_PEERDNS], true);
694 if ((cur = tb[IFACE_ATTR_DNS]))
695 interface_add_dns_server_list(&iface->config_ip, cur);
697 if ((cur = tb[IFACE_ATTR_DNS_SEARCH]))
698 interface_add_dns_search_list(&iface->config_ip, cur);
700 if ((cur = tb[IFACE_ATTR_METRIC]))
701 iface->metric = blobmsg_get_u32(cur);
703 if ((cur = tb[IFACE_ATTR_IP6ASSIGN]))
704 iface->assignment_length = blobmsg_get_u32(cur);
706 iface->assignment_hint = -1;
707 if ((cur = tb[IFACE_ATTR_IP6HINT]))
708 iface->assignment_hint = strtol(blobmsg_get_string(cur), NULL, 16) &
709 ~((1 << (64 - iface->assignment_length)) - 1);
711 if ((cur = tb[IFACE_ATTR_IP6CLASS]))
712 interface_add_assignment_classes(iface, cur);
715 if ((cur = tb[IFACE_ATTR_IP4TABLE])) {
716 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip4table))
717 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
720 if ((cur = tb[IFACE_ATTR_IP6TABLE])) {
721 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip6table))
722 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
725 iface->proto_ip.no_delegation = !blobmsg_get_bool_default(tb[IFACE_ATTR_DELEGATE], true);
727 iface->config_autostart = iface->autostart;
731 void interface_set_dynamic(struct interface *iface)
733 iface->dynamic = true;
734 iface->autostart = true;
735 iface->node.version = -1; // Don't delete on reload
738 static bool __interface_add(struct interface *iface, struct blob_attr *config, bool alias)
740 struct blob_attr *tb[IFACE_ATTR_MAX];
741 struct blob_attr *cur;
743 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
744 blob_data(config), blob_len(config));
747 if ((cur = tb[IFACE_ATTR_INTERFACE]))
748 iface->parent_ifname = blobmsg_data(cur);
750 if (!iface->parent_ifname)
753 if ((cur = tb[IFACE_ATTR_IFNAME]))
754 iface->ifname = blobmsg_data(cur);
758 iface->config = config;
759 vlist_add(&interfaces, &iface->node, iface->name);
764 interface_add(struct interface *iface, struct blob_attr *config)
766 __interface_add(iface, config, false);
770 interface_add_alias(struct interface *iface, struct blob_attr *config)
772 if (iface->proto_handler->flags & PROTO_FLAG_NODEV)
775 return __interface_add(iface, config, true);
779 interface_set_l3_dev(struct interface *iface, struct device *dev)
781 bool enabled = iface->config_ip.enabled;
782 bool claimed = iface->l3_dev.claimed;
784 if (iface->l3_dev.dev == dev)
787 interface_ip_set_enabled(&iface->config_ip, false);
788 interface_ip_flush(&iface->proto_ip);
789 device_add_user(&iface->l3_dev, dev);
793 if (device_claim(&iface->l3_dev) < 0)
796 interface_ip_set_enabled(&iface->config_ip, enabled);
801 interface_set_main_dev(struct interface *iface, struct device *dev)
803 bool claimed = iface->l3_dev.claimed;
805 if (iface->main_dev.dev == dev)
808 interface_set_available(iface, false);
809 device_add_user(&iface->main_dev, dev);
811 interface_set_link_state(iface, false);
816 if (device_claim(&iface->l3_dev) < 0)
820 if (!iface->l3_dev.dev)
821 interface_set_l3_dev(iface, dev);
825 interface_remove_link(struct interface *iface, struct device *dev)
827 struct device *mdev = iface->main_dev.dev;
829 if (mdev && mdev->hotplug_ops)
830 return mdev->hotplug_ops->del(mdev, dev);
832 if (dev == iface->ext_dev.dev)
833 device_remove_user(&iface->ext_dev);
835 if (!iface->main_dev.hotplug)
836 return UBUS_STATUS_INVALID_ARGUMENT;
838 if (dev != iface->main_dev.dev)
839 return UBUS_STATUS_INVALID_ARGUMENT;
841 interface_set_main_dev(iface, NULL);
846 interface_add_link(struct interface *iface, struct device *dev, bool link_ext)
848 struct device *mdev = iface->main_dev.dev;
853 if (iface->main_dev.hotplug)
854 device_remove_user(&iface->main_dev);
857 if (mdev->hotplug_ops)
858 return mdev->hotplug_ops->add(mdev, dev);
860 return UBUS_STATUS_NOT_SUPPORTED;
864 device_add_user(&iface->ext_dev, dev);
866 interface_set_main_dev(iface, dev);
867 iface->main_dev.hotplug = true;
872 interface_handle_link(struct interface *iface, const char *name, bool add, bool link_ext)
879 dev = device_get(name, add ? (link_ext ? 2 : 1) : 0);
881 ret = UBUS_STATUS_NOT_FOUND;
886 device_set_present(dev, true);
887 if (iface->device_config && dev->default_config)
888 device_set_config(dev, dev->type, iface->config);
890 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
891 ret = interface_add_link(iface, dev, link_ext);
893 ret = interface_remove_link(iface, dev);
903 interface_set_up(struct interface *iface)
907 iface->autostart = true;
909 if (iface->state != IFS_DOWN)
912 interface_clear_errors(iface);
913 if (!iface->available) {
914 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
918 if (iface->main_dev.dev) {
919 ret = device_claim(&iface->main_dev);
921 interface_check_state(iface);
924 ret = __interface_set_up(iface);
930 interface_set_down(struct interface *iface)
933 vlist_for_each_element(&interfaces, iface, node)
934 __interface_set_down(iface, false);
936 iface->autostart = false;
937 __interface_set_down(iface, false);
944 interface_start_pending(void)
946 struct interface *iface;
948 vlist_for_each_element(&interfaces, iface, node) {
949 if (iface->available && iface->autostart)
950 interface_set_up(iface);
955 set_config_state(struct interface *iface, enum interface_config_state s)
957 iface->config_state = s;
958 if (iface->state == IFS_DOWN)
959 interface_handle_config_change(iface);
961 __interface_set_down(iface, false);
965 interface_update_start(struct interface *iface)
968 interface_ip_update_start(&iface->proto_ip);
972 interface_update_complete(struct interface *iface)
974 interface_ip_update_complete(&iface->proto_ip);
978 interface_replace_dns(struct interface_ip_settings *new, struct interface_ip_settings *old)
980 vlist_simple_replace(&new->dns_servers, &old->dns_servers);
981 vlist_simple_replace(&new->dns_search, &old->dns_search);
985 interface_change_config(struct interface *if_old, struct interface *if_new)
987 struct blob_attr *old_config = if_old->config;
988 bool reload = false, reload_ip = false;
990 #define FIELD_CHANGED_STR(field) \
991 ((!!if_old->field != !!if_new->field) || \
993 strcmp(if_old->field, if_new->field) != 0))
995 if (FIELD_CHANGED_STR(parent_ifname)) {
996 if (if_old->parent_iface.iface)
997 interface_remove_user(&if_old->parent_iface);
1001 if (FIELD_CHANGED_STR(ifname) ||
1002 if_old->proto_handler != if_new->proto_handler)
1005 if (!if_old->proto_handler->config_params)
1006 D(INTERFACE, "No config parameters for interface '%s'\n",
1008 else if (!uci_blob_check_equal(if_old->config, if_new->config,
1009 if_old->proto_handler->config_params))
1012 #define UPDATE(field, __var) ({ \
1013 bool __changed = (if_old->field != if_new->field); \
1014 if_old->field = if_new->field; \
1015 __var |= __changed; \
1018 if_old->config = if_new->config;
1019 if (if_old->config_autostart != if_new->config_autostart) {
1020 if (if_old->config_autostart)
1023 if_old->autostart = if_new->config_autostart;
1026 if_old->device_config = if_new->device_config;
1027 if_old->config_autostart = if_new->config_autostart;
1028 if_old->ifname = if_new->ifname;
1029 if_old->parent_ifname = if_new->parent_ifname;
1030 if_old->proto_handler = if_new->proto_handler;
1031 if_old->force_link = if_new->force_link;
1033 if_old->proto_ip.no_dns = if_new->proto_ip.no_dns;
1034 interface_replace_dns(&if_old->config_ip, &if_new->config_ip);
1036 UPDATE(metric, reload_ip);
1037 UPDATE(proto_ip.no_defaultroute, reload_ip);
1038 UPDATE(ip4table, reload_ip);
1039 UPDATE(ip6table, reload_ip);
1040 interface_merge_assignment_data(if_old, if_new);
1045 D(INTERFACE, "Reload interface '%s' because of config changes\n",
1047 interface_clear_errors(if_old);
1048 set_config_state(if_old, IFC_RELOAD);
1053 bool config_ip_enabled = if_old->config_ip.enabled;
1054 bool proto_ip_enabled = if_old->proto_ip.enabled;
1056 interface_ip_set_enabled(&if_old->config_ip, false);
1057 interface_ip_set_enabled(&if_old->proto_ip, false);
1058 interface_ip_set_enabled(&if_old->proto_ip, proto_ip_enabled);
1059 interface_ip_set_enabled(&if_old->config_ip, config_ip_enabled);
1062 interface_write_resolv_conf();
1063 if (if_old->main_dev.dev)
1064 interface_check_state(if_old);
1067 if_new->config = NULL;
1068 interface_cleanup(if_new);
1074 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
1075 struct vlist_node *node_old)
1077 struct interface *if_old = container_of(node_old, struct interface, node);
1078 struct interface *if_new = container_of(node_new, struct interface, node);
1080 if (node_old && node_new) {
1081 D(INTERFACE, "Update interface '%s'\n", if_new->name);
1082 interface_change_config(if_old, if_new);
1083 } else if (node_old) {
1084 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
1085 set_config_state(if_old, IFC_REMOVE);
1086 } else if (node_new) {
1087 D(INTERFACE, "Create interface '%s'\n", if_new->name);
1088 proto_init_interface(if_new, if_new->config);
1089 interface_claim_device(if_new);
1090 netifd_ubus_add_interface(if_new);
1096 interface_init_list(void)
1098 vlist_init(&interfaces, avl_strcmp, interface_update);
1099 interfaces.keep_old = true;
1100 interfaces.no_delete = true;