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 && !dev->iface_config)
531 dev->iface_config = iface->device_config;
532 device_apply_config(dev, dev->type, iface->config);
536 interface_claim_device(struct interface *iface)
538 struct interface *parent;
539 struct device *dev = NULL;
541 if (iface->parent_iface.iface)
542 interface_remove_user(&iface->parent_iface);
544 if (iface->parent_ifname) {
545 parent = vlist_find(&interfaces, iface->parent_ifname, parent, node);
546 iface->parent_iface.cb = interface_alias_cb;
547 interface_add_user(&iface->parent_iface, parent);
548 } else if (iface->ifname &&
549 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
550 dev = device_get(iface->ifname, true);
551 interface_set_device_config(iface, dev);
553 dev = iface->ext_dev.dev;
557 interface_set_main_dev(iface, dev);
559 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
560 interface_set_available(iface, true);
564 interface_cleanup_state(struct interface *iface)
566 interface_set_available(iface, false);
568 interface_flush_state(iface);
569 interface_clear_errors(iface);
570 interface_set_proto_state(iface, NULL);
572 interface_set_main_dev(iface, NULL);
573 interface_set_l3_dev(iface, NULL);
577 interface_cleanup(struct interface *iface)
579 struct interface_user *dep, *tmp;
581 uloop_timeout_cancel(&iface->remove_timer);
582 device_remove_user(&iface->ext_dev);
584 if (iface->parent_iface.iface)
585 interface_remove_user(&iface->parent_iface);
587 list_for_each_entry_safe(dep, tmp, &iface->users, list)
588 interface_remove_user(dep);
590 interface_clear_assignment_classes(iface);
591 interface_ip_flush(&iface->config_ip);
592 interface_cleanup_state(iface);
596 interface_do_free(struct interface *iface)
598 interface_event(iface, IFEV_FREE);
599 interface_cleanup(iface);
601 netifd_ubus_remove_interface(iface);
602 avl_delete(&interfaces.avl, &iface->node.avl);
607 interface_do_reload(struct interface *iface)
609 interface_event(iface, IFEV_RELOAD);
610 interface_cleanup_state(iface);
611 proto_init_interface(iface, iface->config);
612 interface_claim_device(iface);
616 interface_handle_config_change(struct interface *iface)
618 enum interface_config_state state = iface->config_state;
620 iface->config_state = IFC_NORMAL;
625 interface_do_reload(iface);
628 interface_do_free(iface);
631 if (iface->autostart && iface->available)
632 interface_set_up(iface);
636 interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
638 struct interface *iface = state->iface;
642 if (iface->state != IFS_SETUP) {
643 interface_event(iface, IFEV_UPDATE);
647 if (!iface->l3_dev.dev)
648 interface_set_l3_dev(iface, iface->main_dev.dev);
650 interface_ip_set_enabled(&iface->config_ip, true);
651 system_flush_routes();
652 iface->state = IFS_UP;
653 iface->start_time = system_get_rtime();
654 interface_event(iface, IFEV_UP);
655 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
658 if (iface->state == IFS_DOWN)
661 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
662 mark_interface_down(iface);
663 if (iface->main_dev.dev)
664 device_release(&iface->main_dev);
665 if (iface->l3_dev.dev)
666 device_remove_user(&iface->l3_dev);
667 interface_handle_config_change(iface);
669 case IFPEV_LINK_LOST:
670 if (iface->state != IFS_UP)
673 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
674 mark_interface_down(iface);
675 iface->state = IFS_SETUP;
681 interface_write_resolv_conf();
684 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
687 iface->proto->free(iface->proto);
690 iface->state = IFS_DOWN;
691 iface->proto = state;
695 state->proto_event = interface_proto_cb;
696 state->iface = iface;
700 interface_alloc(const char *name, struct blob_attr *config)
702 struct interface *iface;
703 struct blob_attr *tb[IFACE_ATTR_MAX];
704 struct blob_attr *cur;
705 const char *proto_name = NULL;
707 bool force_link = false;
709 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
710 iface->name = strcpy(iface_name, name);
711 INIT_LIST_HEAD(&iface->errors);
712 INIT_LIST_HEAD(&iface->users);
713 INIT_LIST_HEAD(&iface->hotplug_list);
714 INIT_LIST_HEAD(&iface->assignment_classes);
715 interface_ip_init(iface);
716 avl_init(&iface->data, avl_strcmp, false, NULL);
717 iface->config_ip.enabled = false;
719 iface->main_dev.cb = interface_cb;
720 iface->ext_dev.cb = interface_ext_cb;
722 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
723 blob_data(config), blob_len(config));
725 if ((cur = tb[IFACE_ATTR_PROTO]))
726 proto_name = blobmsg_data(cur);
728 proto_attach_interface(iface, proto_name);
729 if (iface->proto_handler->flags & PROTO_FLAG_FORCE_LINK_DEFAULT)
732 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
733 iface->force_link = blobmsg_get_bool_default(tb[IFACE_ATTR_FORCE_LINK], force_link);
734 iface->proto_ip.no_defaultroute =
735 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
736 iface->proto_ip.no_dns =
737 !blobmsg_get_bool_default(tb[IFACE_ATTR_PEERDNS], true);
739 if ((cur = tb[IFACE_ATTR_DNS]))
740 interface_add_dns_server_list(&iface->config_ip, cur);
742 if ((cur = tb[IFACE_ATTR_DNS_SEARCH]))
743 interface_add_dns_search_list(&iface->config_ip, cur);
745 if ((cur = tb[IFACE_ATTR_METRIC]))
746 iface->metric = blobmsg_get_u32(cur);
748 if ((cur = tb[IFACE_ATTR_IP6ASSIGN]))
749 iface->assignment_length = blobmsg_get_u32(cur);
752 iface->assignment_iface_id_selection = IFID_FIXED;
753 iface->assignment_fixed_iface_id = in6addr_any;
754 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
756 if ((cur = tb[IFACE_ATTR_IP6IFACEID])) {
757 const char *ifaceid = blobmsg_data(cur);
758 if (!strcmp(ifaceid, "random")) {
759 iface->assignment_iface_id_selection = IFID_RANDOM;
761 else if (!strcmp(ifaceid, "eui64")) {
762 iface->assignment_iface_id_selection = IFID_EUI64;
765 /* we expect an IPv6 address with network id zero here -> fixed iface id
766 if we cannot parse -> revert to iface id 1 */
767 if (inet_pton(AF_INET6,ifaceid,&iface->assignment_fixed_iface_id) != 1 ||
768 iface->assignment_fixed_iface_id.s6_addr32[0] != 0 ||
769 iface->assignment_fixed_iface_id.s6_addr32[1] != 0) {
770 iface->assignment_fixed_iface_id = in6addr_any;
771 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
772 netifd_log_message(L_WARNING, "Failed to parse ip6ifaceid for interface '%s', \
773 falling back to iface id 1.\n", iface->name);
778 iface->assignment_hint = -1;
779 if ((cur = tb[IFACE_ATTR_IP6HINT]))
780 iface->assignment_hint = strtol(blobmsg_get_string(cur), NULL, 16) &
781 ~((1 << (64 - iface->assignment_length)) - 1);
783 if ((cur = tb[IFACE_ATTR_IP6CLASS]))
784 interface_add_assignment_classes(iface, cur);
787 if ((cur = tb[IFACE_ATTR_IP4TABLE])) {
788 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip4table))
789 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
792 if ((cur = tb[IFACE_ATTR_IP6TABLE])) {
793 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip6table))
794 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
797 iface->proto_ip.no_delegation = !blobmsg_get_bool_default(tb[IFACE_ATTR_DELEGATE], true);
799 iface->config_autostart = iface->autostart;
803 void interface_set_dynamic(struct interface *iface)
805 iface->dynamic = true;
806 iface->autostart = true;
807 iface->node.version = -1; // Don't delete on reload
810 static bool __interface_add(struct interface *iface, struct blob_attr *config, bool alias)
812 struct blob_attr *tb[IFACE_ATTR_MAX];
813 struct blob_attr *cur;
815 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
816 blob_data(config), blob_len(config));
819 if ((cur = tb[IFACE_ATTR_INTERFACE]))
820 iface->parent_ifname = blobmsg_data(cur);
822 if (!iface->parent_ifname)
825 if ((cur = tb[IFACE_ATTR_IFNAME]))
826 iface->ifname = blobmsg_data(cur);
830 iface->config = config;
831 vlist_add(&interfaces, &iface->node, iface->name);
836 interface_add(struct interface *iface, struct blob_attr *config)
838 __interface_add(iface, config, false);
842 interface_add_alias(struct interface *iface, struct blob_attr *config)
844 if (iface->proto_handler->flags & PROTO_FLAG_NODEV)
847 return __interface_add(iface, config, true);
851 interface_set_l3_dev(struct interface *iface, struct device *dev)
853 bool enabled = iface->config_ip.enabled;
854 bool claimed = iface->l3_dev.claimed;
856 if (iface->l3_dev.dev == dev)
859 interface_ip_set_enabled(&iface->config_ip, false);
860 interface_ip_flush(&iface->proto_ip);
861 device_add_user(&iface->l3_dev, dev);
865 if (device_claim(&iface->l3_dev) < 0)
868 interface_ip_set_enabled(&iface->config_ip, enabled);
873 interface_set_main_dev(struct interface *iface, struct device *dev)
875 bool claimed = iface->l3_dev.claimed;
877 if (iface->main_dev.dev == dev)
880 interface_set_available(iface, false);
881 device_add_user(&iface->main_dev, dev);
883 interface_set_link_state(iface, false);
888 if (device_claim(&iface->l3_dev) < 0)
892 if (!iface->l3_dev.dev)
893 interface_set_l3_dev(iface, dev);
897 interface_remove_link(struct interface *iface, struct device *dev)
899 struct device *mdev = iface->main_dev.dev;
901 if (mdev && mdev->hotplug_ops)
902 return mdev->hotplug_ops->del(mdev, dev);
904 if (dev == iface->ext_dev.dev)
905 device_remove_user(&iface->ext_dev);
907 if (!iface->main_dev.hotplug)
908 return UBUS_STATUS_INVALID_ARGUMENT;
910 if (dev != iface->main_dev.dev)
911 return UBUS_STATUS_INVALID_ARGUMENT;
913 interface_set_main_dev(iface, NULL);
918 interface_add_link(struct interface *iface, struct device *dev, bool link_ext)
920 struct device *mdev = iface->main_dev.dev;
925 if (iface->main_dev.hotplug)
926 device_remove_user(&iface->main_dev);
929 if (mdev->hotplug_ops)
930 return mdev->hotplug_ops->add(mdev, dev);
932 return UBUS_STATUS_NOT_SUPPORTED;
936 device_add_user(&iface->ext_dev, dev);
938 interface_set_main_dev(iface, dev);
939 iface->main_dev.hotplug = true;
944 interface_handle_link(struct interface *iface, const char *name, bool add, bool link_ext)
951 dev = device_get(name, add ? (link_ext ? 2 : 1) : 0);
953 ret = UBUS_STATUS_NOT_FOUND;
958 interface_set_device_config(iface, dev);
959 device_set_present(dev, true);
961 ret = interface_add_link(iface, dev, link_ext);
963 ret = interface_remove_link(iface, dev);
973 interface_set_up(struct interface *iface)
977 iface->autostart = true;
979 if (iface->state != IFS_DOWN)
982 interface_clear_errors(iface);
983 if (!iface->available) {
984 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
988 if (iface->main_dev.dev) {
989 ret = device_claim(&iface->main_dev);
991 interface_check_state(iface);
994 ret = __interface_set_up(iface);
1000 interface_set_down(struct interface *iface)
1003 vlist_for_each_element(&interfaces, iface, node)
1004 __interface_set_down(iface, false);
1006 iface->autostart = false;
1007 __interface_set_down(iface, false);
1014 interface_start_pending(void)
1016 struct interface *iface;
1018 vlist_for_each_element(&interfaces, iface, node) {
1019 if (iface->available && iface->autostart)
1020 interface_set_up(iface);
1025 set_config_state(struct interface *iface, enum interface_config_state s)
1027 iface->config_state = s;
1028 if (iface->state == IFS_DOWN)
1029 interface_handle_config_change(iface);
1031 __interface_set_down(iface, false);
1035 interface_update_start(struct interface *iface)
1038 interface_ip_update_start(&iface->proto_ip);
1042 interface_update_complete(struct interface *iface)
1044 interface_ip_update_complete(&iface->proto_ip);
1048 interface_replace_dns(struct interface_ip_settings *new, struct interface_ip_settings *old)
1050 vlist_simple_replace(&new->dns_servers, &old->dns_servers);
1051 vlist_simple_replace(&new->dns_search, &old->dns_search);
1055 interface_device_config_changed(struct interface *if_old, struct interface *if_new)
1057 struct blob_attr *ntb[__DEV_ATTR_MAX];
1058 struct blob_attr *otb[__DEV_ATTR_MAX];
1059 struct device *dev = if_old->main_dev.dev;
1060 unsigned long diff = 0;
1062 BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / 8);
1067 if (if_old->device_config != if_new->device_config)
1070 if (!if_new->device_config)
1073 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb,
1074 blob_data(if_old->config), blob_len(if_old->config));
1076 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, ntb,
1077 blob_data(if_new->config), blob_len(if_new->config));
1079 uci_blob_diff(ntb, otb, &device_attr_list, &diff);
1084 interface_change_config(struct interface *if_old, struct interface *if_new)
1086 struct blob_attr *old_config = if_old->config;
1087 bool reload = false, reload_ip = false;
1089 #define FIELD_CHANGED_STR(field) \
1090 ((!!if_old->field != !!if_new->field) || \
1092 strcmp(if_old->field, if_new->field) != 0))
1094 if (FIELD_CHANGED_STR(parent_ifname)) {
1095 if (if_old->parent_iface.iface)
1096 interface_remove_user(&if_old->parent_iface);
1100 if (!reload && interface_device_config_changed(if_old, if_new))
1103 if (FIELD_CHANGED_STR(ifname) ||
1104 if_old->proto_handler != if_new->proto_handler)
1107 if (!if_old->proto_handler->config_params)
1108 D(INTERFACE, "No config parameters for interface '%s'\n",
1110 else if (!uci_blob_check_equal(if_old->config, if_new->config,
1111 if_old->proto_handler->config_params))
1114 #define UPDATE(field, __var) ({ \
1115 bool __changed = (if_old->field != if_new->field); \
1116 if_old->field = if_new->field; \
1117 __var |= __changed; \
1120 if_old->config = if_new->config;
1121 if (if_old->config_autostart != if_new->config_autostart) {
1122 if (if_old->config_autostart)
1125 if_old->autostart = if_new->config_autostart;
1128 if_old->device_config = if_new->device_config;
1129 if_old->config_autostart = if_new->config_autostart;
1130 if_old->ifname = if_new->ifname;
1131 if_old->parent_ifname = if_new->parent_ifname;
1132 if_old->proto_handler = if_new->proto_handler;
1133 if_old->force_link = if_new->force_link;
1135 if_old->proto_ip.no_dns = if_new->proto_ip.no_dns;
1136 interface_replace_dns(&if_old->config_ip, &if_new->config_ip);
1138 UPDATE(metric, reload_ip);
1139 UPDATE(proto_ip.no_defaultroute, reload_ip);
1140 UPDATE(ip4table, reload_ip);
1141 UPDATE(ip6table, reload_ip);
1142 interface_merge_assignment_data(if_old, if_new);
1147 D(INTERFACE, "Reload interface '%s' because of config changes\n",
1149 interface_clear_errors(if_old);
1150 set_config_state(if_old, IFC_RELOAD);
1155 bool config_ip_enabled = if_old->config_ip.enabled;
1156 bool proto_ip_enabled = if_old->proto_ip.enabled;
1158 interface_ip_set_enabled(&if_old->config_ip, false);
1159 interface_ip_set_enabled(&if_old->proto_ip, false);
1160 interface_ip_set_enabled(&if_old->proto_ip, proto_ip_enabled);
1161 interface_ip_set_enabled(&if_old->config_ip, config_ip_enabled);
1164 interface_write_resolv_conf();
1165 if (if_old->main_dev.dev)
1166 interface_check_state(if_old);
1169 if_new->config = NULL;
1170 interface_cleanup(if_new);
1176 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
1177 struct vlist_node *node_old)
1179 struct interface *if_old = container_of(node_old, struct interface, node);
1180 struct interface *if_new = container_of(node_new, struct interface, node);
1182 if (node_old && node_new) {
1183 D(INTERFACE, "Update interface '%s'\n", if_new->name);
1184 interface_change_config(if_old, if_new);
1185 } else if (node_old) {
1186 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
1187 set_config_state(if_old, IFC_REMOVE);
1188 } else if (node_new) {
1189 D(INTERFACE, "Create interface '%s'\n", if_new->name);
1190 proto_init_interface(if_new, if_new->config);
1191 interface_claim_device(if_new);
1192 netifd_ubus_add_interface(if_new);
1198 interface_init_list(void)
1200 vlist_init(&interfaces, avl_strcmp, interface_update);
1201 interfaces.keep_old = true;
1202 interfaces.no_delete = true;