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) {
274 if (!iface->enabled || !link_state) {
275 mark_interface_down(iface);
276 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
280 if (iface->autostart && iface->enabled && link_state && !config_init)
281 __interface_set_up(iface);
289 interface_set_enabled(struct interface *iface, bool new_state)
291 if (iface->enabled == new_state)
294 netifd_log_message(L_NOTICE, "Interface '%s' is %s\n", iface->name, new_state ? "enabled" : "disabled");
295 iface->enabled = new_state;
296 interface_check_state(iface);
300 interface_set_link_state(struct interface *iface, bool new_state)
302 if (iface->link_state == new_state)
305 netifd_log_message(L_NOTICE, "Interface '%s' has link connectivity %s\n", iface->name, new_state ? "" : "loss");
306 iface->link_state = new_state;
307 interface_check_state(iface);
311 interface_ext_cb(struct device_user *dep, enum device_event ev)
313 if (ev == DEV_EVENT_REMOVE)
314 device_remove_user(dep);
318 interface_cb(struct device_user *dep, enum device_event ev)
320 struct interface *iface;
321 bool new_state = false;
323 iface = container_of(dep, struct interface, main_dev);
327 case DEV_EVENT_REMOVE:
328 interface_set_available(iface, new_state);
329 if (!new_state && dep->dev && dep->dev->external)
330 interface_set_main_dev(iface, NULL);
335 interface_set_enabled(iface, new_state);
337 case DEV_EVENT_LINK_UP:
339 case DEV_EVENT_LINK_DOWN:
340 interface_set_link_state(iface, new_state);
342 case DEV_EVENT_TOPO_CHANGE:
343 interface_proto_event(iface->proto, PROTO_CMD_RENEW, false);
351 interface_set_available(struct interface *iface, bool new_state)
353 if (iface->available == new_state)
356 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
357 iface->available = new_state;
360 if (iface->autostart && !config_init)
361 interface_set_up(iface);
363 __interface_set_down(iface, true);
367 interface_add_user(struct interface_user *dep, struct interface *iface)
370 list_add(&dep->list, &iface_all_users);
375 list_add(&dep->list, &iface->users);
376 if (iface->state == IFS_UP)
377 dep->cb(dep, iface, IFEV_UP);
381 interface_remove_user(struct interface_user *dep)
383 list_del_init(&dep->list);
388 interface_add_assignment_classes(struct interface *iface, struct blob_attr *list)
390 struct blob_attr *cur;
393 blobmsg_for_each_attr(cur, list, rem) {
394 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
397 if (!blobmsg_check_attr(cur, NULL))
400 struct interface_assignment_class *c = malloc(sizeof(*c) + blobmsg_data_len(cur));
401 memcpy(c->name, blobmsg_data(cur), blobmsg_data_len(cur));
402 list_add(&c->head, &iface->assignment_classes);
407 interface_clear_assignment_classes(struct interface *iface)
409 while (!list_empty(&iface->assignment_classes)) {
410 struct interface_assignment_class *c = list_first_entry(&iface->assignment_classes,
411 struct interface_assignment_class, head);
418 interface_merge_assignment_data(struct interface *old, struct interface *new)
420 bool changed = (old->assignment_hint != new->assignment_hint ||
421 old->assignment_length != new->assignment_length ||
422 list_empty(&old->assignment_classes) != list_empty(&new->assignment_classes));
424 struct interface_assignment_class *c;
425 list_for_each_entry(c, &new->assignment_classes, head) {
426 // Compare list entries one-by-one to see if there was a change
427 if (list_empty(&old->assignment_classes)) // The new list is longer
433 struct interface_assignment_class *c_old = list_first_entry(&old->assignment_classes,
434 struct interface_assignment_class, head);
436 if (strcmp(c_old->name, c->name)) // An entry didn't match
439 list_del(&c_old->head);
443 // The old list was longer than the new one or the last entry didn't match
444 if (!list_empty(&old->assignment_classes)) {
445 interface_clear_assignment_classes(old);
449 list_splice_init(&new->assignment_classes, &old->assignment_classes);
452 old->assignment_hint = new->assignment_hint;
453 old->assignment_length = new->assignment_length;
454 interface_refresh_assignments(true);
459 interface_alias_cb(struct interface_user *dep, struct interface *iface, enum interface_event ev)
461 struct interface *alias = container_of(dep, struct interface, parent_iface);
462 struct device *dev = iface->l3_dev.dev;
469 interface_set_main_dev(alias, dev);
470 interface_set_available(alias, true);
473 interface_set_available(alias, false);
474 interface_set_main_dev(alias, NULL);
477 interface_remove_user(dep);
486 interface_claim_device(struct interface *iface)
488 struct interface *parent;
489 struct device *dev = NULL;
491 if (iface->parent_iface.iface)
492 interface_remove_user(&iface->parent_iface);
494 if (iface->parent_ifname) {
495 parent = vlist_find(&interfaces, iface->parent_ifname, parent, node);
496 iface->parent_iface.cb = interface_alias_cb;
497 interface_add_user(&iface->parent_iface, parent);
498 } else if (iface->ifname &&
499 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
500 dev = device_get(iface->ifname, true);
502 dev = iface->ext_dev.dev;
506 interface_set_main_dev(iface, dev);
508 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
509 interface_set_available(iface, true);
513 interface_cleanup_state(struct interface *iface)
515 interface_set_available(iface, false);
517 interface_flush_state(iface);
518 interface_clear_errors(iface);
519 interface_set_proto_state(iface, NULL);
521 interface_set_main_dev(iface, NULL);
522 interface_set_l3_dev(iface, NULL);
526 interface_cleanup(struct interface *iface)
528 struct interface_user *dep, *tmp;
530 device_remove_user(&iface->ext_dev);
532 if (iface->parent_iface.iface)
533 interface_remove_user(&iface->parent_iface);
535 list_for_each_entry_safe(dep, tmp, &iface->users, list)
536 interface_remove_user(dep);
538 interface_clear_assignment_classes(iface);
539 interface_ip_flush(&iface->config_ip);
540 interface_cleanup_state(iface);
544 interface_do_free(struct interface *iface)
546 interface_event(iface, IFEV_FREE);
547 interface_cleanup(iface);
549 netifd_ubus_remove_interface(iface);
550 avl_delete(&interfaces.avl, &iface->node.avl);
555 interface_do_reload(struct interface *iface)
557 interface_event(iface, IFEV_RELOAD);
558 interface_cleanup_state(iface);
559 proto_init_interface(iface, iface->config);
560 interface_claim_device(iface);
564 interface_handle_config_change(struct interface *iface)
566 enum interface_config_state state = iface->config_state;
568 iface->config_state = IFC_NORMAL;
573 interface_do_reload(iface);
576 interface_do_free(iface);
579 if (iface->autostart && iface->available)
580 interface_set_up(iface);
584 interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
586 struct interface *iface = state->iface;
590 if (iface->state != IFS_SETUP) {
591 interface_event(iface, IFEV_UPDATE);
595 if (!iface->l3_dev.dev)
596 interface_set_l3_dev(iface, iface->main_dev.dev);
598 interface_ip_set_enabled(&iface->config_ip, true);
599 system_flush_routes();
600 iface->state = IFS_UP;
601 iface->start_time = system_get_rtime();
602 interface_event(iface, IFEV_UP);
603 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
606 if (iface->state == IFS_DOWN)
609 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
610 mark_interface_down(iface);
611 if (iface->main_dev.dev)
612 device_release(&iface->main_dev);
613 if (iface->l3_dev.dev)
614 device_remove_user(&iface->l3_dev);
615 interface_handle_config_change(iface);
617 case IFPEV_LINK_LOST:
618 if (iface->state != IFS_UP)
621 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
622 mark_interface_down(iface);
623 iface->state = IFS_SETUP;
629 interface_write_resolv_conf();
632 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
635 iface->proto->free(iface->proto);
638 iface->state = IFS_DOWN;
639 iface->proto = state;
643 state->proto_event = interface_proto_cb;
644 state->iface = iface;
648 interface_alloc(const char *name, struct blob_attr *config)
650 struct interface *iface;
651 struct blob_attr *tb[IFACE_ATTR_MAX];
652 struct blob_attr *cur;
653 const char *proto_name = NULL;
656 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
657 iface->name = strcpy(iface_name, name);
658 INIT_LIST_HEAD(&iface->errors);
659 INIT_LIST_HEAD(&iface->users);
660 INIT_LIST_HEAD(&iface->hotplug_list);
661 INIT_LIST_HEAD(&iface->assignment_classes);
662 interface_ip_init(iface);
663 avl_init(&iface->data, avl_strcmp, false, NULL);
664 iface->config_ip.enabled = false;
666 iface->main_dev.cb = interface_cb;
667 iface->ext_dev.cb = interface_ext_cb;
669 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
670 blob_data(config), blob_len(config));
672 if ((cur = tb[IFACE_ATTR_PROTO]))
673 proto_name = blobmsg_data(cur);
675 proto_attach_interface(iface, proto_name);
677 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
678 iface->force_link = blobmsg_get_bool_default(tb[IFACE_ATTR_FORCE_LINK], false);
679 iface->proto_ip.no_defaultroute =
680 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
681 iface->proto_ip.no_dns =
682 !blobmsg_get_bool_default(tb[IFACE_ATTR_PEERDNS], true);
684 if ((cur = tb[IFACE_ATTR_DNS]))
685 interface_add_dns_server_list(&iface->config_ip, cur);
687 if ((cur = tb[IFACE_ATTR_DNS_SEARCH]))
688 interface_add_dns_search_list(&iface->config_ip, cur);
690 if ((cur = tb[IFACE_ATTR_METRIC]))
691 iface->metric = blobmsg_get_u32(cur);
693 if ((cur = tb[IFACE_ATTR_IP6ASSIGN]))
694 iface->assignment_length = blobmsg_get_u32(cur);
696 iface->assignment_hint = -1;
697 if ((cur = tb[IFACE_ATTR_IP6HINT]))
698 iface->assignment_hint = strtol(blobmsg_get_string(cur), NULL, 16) &
699 ~((1 << (64 - iface->assignment_length)) - 1);
701 if ((cur = tb[IFACE_ATTR_IP6CLASS]))
702 interface_add_assignment_classes(iface, cur);
705 if ((cur = tb[IFACE_ATTR_IP4TABLE])) {
706 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip4table))
707 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
710 if ((cur = tb[IFACE_ATTR_IP6TABLE])) {
711 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip6table))
712 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
715 iface->proto_ip.no_delegation = !blobmsg_get_bool_default(tb[IFACE_ATTR_DELEGATE], true);
717 iface->config_autostart = iface->autostart;
721 void interface_set_dynamic(struct interface *iface)
723 iface->dynamic = true;
724 iface->autostart = true;
725 iface->node.version = -1; // Don't delete on reload
728 static bool __interface_add(struct interface *iface, struct blob_attr *config, bool alias)
730 struct blob_attr *tb[IFACE_ATTR_MAX];
731 struct blob_attr *cur;
733 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
734 blob_data(config), blob_len(config));
737 if ((cur = tb[IFACE_ATTR_INTERFACE]))
738 iface->parent_ifname = blobmsg_data(cur);
740 if (!iface->parent_ifname)
743 if ((cur = tb[IFACE_ATTR_IFNAME]))
744 iface->ifname = blobmsg_data(cur);
748 iface->config = config;
749 vlist_add(&interfaces, &iface->node, iface->name);
754 interface_add(struct interface *iface, struct blob_attr *config)
756 __interface_add(iface, config, false);
760 interface_add_alias(struct interface *iface, struct blob_attr *config)
762 if (iface->proto_handler->flags & PROTO_FLAG_NODEV)
765 return __interface_add(iface, config, true);
769 interface_set_l3_dev(struct interface *iface, struct device *dev)
771 bool enabled = iface->config_ip.enabled;
772 bool claimed = iface->l3_dev.claimed;
774 if (iface->l3_dev.dev == dev)
777 interface_ip_set_enabled(&iface->config_ip, false);
778 interface_ip_flush(&iface->proto_ip);
779 device_add_user(&iface->l3_dev, dev);
783 if (device_claim(&iface->l3_dev) < 0)
786 interface_ip_set_enabled(&iface->config_ip, enabled);
791 interface_set_main_dev(struct interface *iface, struct device *dev)
793 bool claimed = iface->l3_dev.claimed;
795 if (iface->main_dev.dev == dev)
798 interface_set_available(iface, false);
799 device_add_user(&iface->main_dev, dev);
801 interface_set_link_state(iface, false);
806 if (device_claim(&iface->l3_dev) < 0)
810 if (!iface->l3_dev.dev)
811 interface_set_l3_dev(iface, dev);
815 interface_remove_link(struct interface *iface, struct device *dev)
817 struct device *mdev = iface->main_dev.dev;
819 if (mdev && mdev->hotplug_ops)
820 return mdev->hotplug_ops->del(mdev, dev);
822 if (dev == iface->ext_dev.dev)
823 device_remove_user(&iface->ext_dev);
825 if (!iface->main_dev.hotplug)
826 return UBUS_STATUS_INVALID_ARGUMENT;
828 if (dev != iface->main_dev.dev)
829 return UBUS_STATUS_INVALID_ARGUMENT;
831 interface_set_main_dev(iface, NULL);
836 interface_add_link(struct interface *iface, struct device *dev)
838 struct device *mdev = iface->main_dev.dev;
843 if (iface->main_dev.hotplug)
844 device_remove_user(&iface->main_dev);
847 if (mdev->hotplug_ops)
848 return mdev->hotplug_ops->add(mdev, dev);
850 return UBUS_STATUS_NOT_SUPPORTED;
853 device_add_user(&iface->ext_dev, dev);
854 interface_set_main_dev(iface, dev);
855 iface->main_dev.hotplug = true;
860 interface_handle_link(struct interface *iface, const char *name, bool add)
867 dev = device_get(name, add ? 2 : 0);
869 ret = UBUS_STATUS_NOT_FOUND;
874 device_set_present(dev, true);
875 if (iface->device_config)
876 device_set_config(dev, &simple_device_type, iface->config);
878 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
879 ret = interface_add_link(iface, dev);
881 ret = interface_remove_link(iface, dev);
891 interface_set_up(struct interface *iface)
895 iface->autostart = true;
897 if (iface->state != IFS_DOWN)
900 interface_clear_errors(iface);
901 if (!iface->available) {
902 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
906 if (iface->main_dev.dev) {
907 ret = device_claim(&iface->main_dev);
909 interface_check_state(iface);
912 ret = __interface_set_up(iface);
918 interface_set_down(struct interface *iface)
921 vlist_for_each_element(&interfaces, iface, node)
922 __interface_set_down(iface, false);
924 iface->autostart = false;
925 __interface_set_down(iface, false);
932 interface_start_pending(void)
934 struct interface *iface;
936 vlist_for_each_element(&interfaces, iface, node) {
937 if (iface->available && iface->autostart)
938 interface_set_up(iface);
943 set_config_state(struct interface *iface, enum interface_config_state s)
945 iface->config_state = s;
946 if (iface->state == IFS_DOWN)
947 interface_handle_config_change(iface);
949 __interface_set_down(iface, false);
953 interface_update_start(struct interface *iface)
956 interface_ip_update_start(&iface->proto_ip);
960 interface_update_complete(struct interface *iface)
962 interface_ip_update_complete(&iface->proto_ip);
966 interface_replace_dns(struct interface_ip_settings *new, struct interface_ip_settings *old)
968 vlist_simple_replace(&new->dns_servers, &old->dns_servers);
969 vlist_simple_replace(&new->dns_search, &old->dns_search);
973 interface_change_config(struct interface *if_old, struct interface *if_new)
975 struct blob_attr *old_config = if_old->config;
976 bool reload = false, reload_ip = false;
978 #define FIELD_CHANGED_STR(field) \
979 ((!!if_old->field != !!if_new->field) || \
981 strcmp(if_old->field, if_new->field) != 0))
983 if (FIELD_CHANGED_STR(parent_ifname)) {
984 if (if_old->parent_iface.iface)
985 interface_remove_user(&if_old->parent_iface);
989 if (FIELD_CHANGED_STR(ifname) ||
990 if_old->proto_handler != if_new->proto_handler)
993 if (!if_old->proto_handler->config_params)
994 D(INTERFACE, "No config parameters for interface '%s'\n",
996 else if (!uci_blob_check_equal(if_old->config, if_new->config,
997 if_old->proto_handler->config_params))
1000 #define UPDATE(field, __var) ({ \
1001 bool __changed = (if_old->field != if_new->field); \
1002 if_old->field = if_new->field; \
1003 __var |= __changed; \
1006 if_old->config = if_new->config;
1007 if (!if_old->config_autostart && if_new->config_autostart)
1008 if_old->autostart = true;
1010 if_old->device_config = if_new->device_config;
1011 if_old->config_autostart = if_new->config_autostart;
1012 if_old->ifname = if_new->ifname;
1013 if_old->parent_ifname = if_new->parent_ifname;
1014 if_old->proto_handler = if_new->proto_handler;
1015 if_old->force_link = if_new->force_link;
1017 if_old->proto_ip.no_dns = if_new->proto_ip.no_dns;
1018 interface_replace_dns(&if_old->config_ip, &if_new->config_ip);
1020 UPDATE(metric, reload_ip);
1021 UPDATE(proto_ip.no_defaultroute, reload_ip);
1022 UPDATE(ip4table, reload_ip);
1023 UPDATE(ip6table, reload_ip);
1024 interface_merge_assignment_data(if_old, if_new);
1029 D(INTERFACE, "Reload interface '%s' because of config changes\n",
1031 interface_clear_errors(if_old);
1032 set_config_state(if_old, IFC_RELOAD);
1037 interface_ip_set_enabled(&if_old->config_ip, false);
1038 interface_ip_set_enabled(&if_old->proto_ip, false);
1039 interface_ip_set_enabled(&if_old->proto_ip, if_new->proto_ip.enabled);
1040 interface_ip_set_enabled(&if_old->config_ip, if_new->config_ip.enabled);
1043 interface_write_resolv_conf();
1044 if (if_old->main_dev.dev)
1045 interface_check_state(if_old);
1048 if_new->config = NULL;
1049 interface_cleanup(if_new);
1055 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
1056 struct vlist_node *node_old)
1058 struct interface *if_old = container_of(node_old, struct interface, node);
1059 struct interface *if_new = container_of(node_new, struct interface, node);
1061 if (node_old && node_new) {
1062 D(INTERFACE, "Update interface '%s'\n", if_new->name);
1063 interface_change_config(if_old, if_new);
1064 } else if (node_old) {
1065 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
1066 set_config_state(if_old, IFC_REMOVE);
1067 } else if (node_new) {
1068 D(INTERFACE, "Create interface '%s'\n", if_new->name);
1069 proto_init_interface(if_new, if_new->config);
1070 interface_claim_device(if_new);
1071 netifd_ubus_add_interface(if_new);
1077 interface_init_list(void)
1079 vlist_init(&interfaces, avl_strcmp, interface_update);
1080 interfaces.keep_old = true;
1081 interfaces.no_delete = true;