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,
38 IFACE_ATTR_DNS_METRIC,
47 IFACE_ATTR_IP6IFACEID,
48 IFACE_ATTR_FORCE_LINK,
53 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
54 [IFACE_ATTR_PROTO] = { .name = "proto", .type = BLOBMSG_TYPE_STRING },
55 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
56 [IFACE_ATTR_AUTO] = { .name = "auto", .type = BLOBMSG_TYPE_BOOL },
57 [IFACE_ATTR_DEFAULTROUTE] = { .name = "defaultroute", .type = BLOBMSG_TYPE_BOOL },
58 [IFACE_ATTR_PEERDNS] = { .name = "peerdns", .type = BLOBMSG_TYPE_BOOL },
59 [IFACE_ATTR_METRIC] = { .name = "metric", .type = BLOBMSG_TYPE_INT32 },
60 [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
61 [IFACE_ATTR_DNS_SEARCH] = { .name = "dns_search", .type = BLOBMSG_TYPE_ARRAY },
62 [IFACE_ATTR_DNS_METRIC] = { .name = "dns_metric", .type = BLOBMSG_TYPE_INT32 },
63 [IFACE_ATTR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
64 [IFACE_ATTR_IP6ASSIGN] = { .name = "ip6assign", .type = BLOBMSG_TYPE_INT32 },
65 [IFACE_ATTR_IP6HINT] = { .name = "ip6hint", .type = BLOBMSG_TYPE_STRING },
66 [IFACE_ATTR_IP4TABLE] = { .name = "ip4table", .type = BLOBMSG_TYPE_STRING },
67 [IFACE_ATTR_IP6TABLE] = { .name = "ip6table", .type = BLOBMSG_TYPE_STRING },
68 [IFACE_ATTR_IP6CLASS] = { .name = "ip6class", .type = BLOBMSG_TYPE_ARRAY },
69 [IFACE_ATTR_DELEGATE] = { .name = "delegate", .type = BLOBMSG_TYPE_BOOL },
70 [IFACE_ATTR_IP6IFACEID] = { .name = "ip6ifaceid", .type = BLOBMSG_TYPE_STRING },
71 [IFACE_ATTR_FORCE_LINK] = { .name = "force_link", .type = BLOBMSG_TYPE_BOOL },
72 [IFACE_ATTR_IP6WEIGHT] = { .name = "ip6weight", .type = BLOBMSG_TYPE_INT32 },
75 const struct uci_blob_param_list interface_attr_list = {
76 .n_params = IFACE_ATTR_MAX,
77 .params = iface_attrs,
81 interface_set_main_dev(struct interface *iface, struct device *dev);
83 interface_event(struct interface *iface, enum interface_event ev);
86 interface_error_flush(struct interface *iface)
88 struct interface_error *error, *tmp;
90 list_for_each_entry_safe(error, tmp, &iface->errors, list) {
91 list_del(&error->list);
97 interface_clear_errors(struct interface *iface)
99 /* don't flush the errors in case the configured protocol handler matches the
100 running protocol handler and is having the last error capability */
101 if (!(iface->proto &&
102 (iface->proto->handler->flags & PROTO_FLAG_LASTERROR) &&
103 (iface->proto->handler->name == iface->proto_handler->name)))
104 interface_error_flush(iface);
107 void interface_add_error(struct interface *iface, const char *subsystem,
108 const char *code, const char **data, int n_data)
110 struct interface_error *error;
113 char *dest, *d_subsys, *d_code;
115 /* if the configured protocol handler has the last error support capability,
116 errors should only be added if the running protocol handler matches the
119 (iface->proto->handler->flags & PROTO_FLAG_LASTERROR) &&
120 (iface->proto->handler->name != iface->proto_handler->name))
124 len = n_data * sizeof(char *);
125 datalen = alloca(len);
126 for (i = 0; i < n_data; i++) {
127 datalen[i] = strlen(data[i]) + 1;
132 error = calloc_a(sizeof(*error) + sizeof(char *) + len,
133 &d_subsys, subsystem ? strlen(subsystem) + 1 : 0,
134 &d_code, code ? strlen(code) + 1 : 0);
138 /* Only keep the last flagged error, prevent this list grows unlimitted in case the
139 protocol can't be established (e.g auth failure) */
140 if (iface->proto_handler->flags & PROTO_FLAG_LASTERROR)
141 interface_error_flush(iface);
143 list_add_tail(&error->list, &iface->errors);
145 dest = (char *) &error->data[n_data + 1];
146 for (i = 0; i < n_data; i++) {
147 error->data[i] = dest;
148 memcpy(dest, data[i], datalen[i]);
151 error->data[n_data] = NULL;
154 error->subsystem = strcpy(d_subsys, subsystem);
157 error->code = strcpy(d_code, code);
161 interface_data_del(struct interface *iface, struct interface_data *data)
163 avl_delete(&iface->data, &data->node);
168 interface_data_flush(struct interface *iface)
170 struct interface_data *d, *tmp;
172 avl_for_each_element_safe(&iface->data, d, node, tmp)
173 interface_data_del(iface, d);
177 interface_add_data(struct interface *iface, const struct blob_attr *data)
179 struct interface_data *n, *o;
181 if (!blobmsg_check_attr(data, true))
182 return UBUS_STATUS_INVALID_ARGUMENT;
184 const char *name = blobmsg_name(data);
185 unsigned len = blob_pad_len(data);
187 o = avl_find_element(&iface->data, name, o, node);
189 if (blob_pad_len(o->data) == len && !memcmp(o->data, data, len))
192 interface_data_del(iface, o);
195 n = calloc(1, sizeof(*n) + len);
197 return UBUS_STATUS_UNKNOWN_ERROR;
199 memcpy(n->data, data, len);
200 n->node.key = blobmsg_name(n->data);
201 avl_insert(&iface->data, &n->node);
203 iface->updated |= IUF_DATA;
207 int interface_parse_data(struct interface *iface, const struct blob_attr *attr)
209 struct blob_attr *cur;
214 blob_for_each_attr(cur, attr, rem) {
215 ret = interface_add_data(iface, cur);
220 if (iface->updated && iface->state == IFS_UP)
221 interface_event(iface, IFEV_UPDATE);
227 interface_event(struct interface *iface, enum interface_event ev)
229 struct interface_user *dep, *tmp;
230 struct device *adev = NULL;
232 list_for_each_entry_safe(dep, tmp, &iface->users, list)
233 dep->cb(dep, iface, ev);
235 list_for_each_entry_safe(dep, tmp, &iface_all_users, list)
236 dep->cb(dep, iface, ev);
240 interface_error_flush(iface);
241 adev = iface->l3_dev.dev;
245 alias_notify_device(iface->name, adev);
253 interface_flush_state(struct interface *iface)
255 if (iface->l3_dev.dev)
256 device_release(&iface->l3_dev);
257 interface_data_flush(iface);
261 mark_interface_down(struct interface *iface)
263 enum interface_state state = iface->state;
265 if (state == IFS_DOWN)
268 iface->link_up_event = false;
269 iface->state = IFS_DOWN;
272 interface_event(iface, IFEV_DOWN);
275 interface_event(iface, IFEV_UP_FAILED);
280 interface_ip_set_enabled(&iface->config_ip, false);
281 interface_ip_set_enabled(&iface->proto_ip, false);
282 interface_ip_flush(&iface->proto_ip);
283 interface_flush_state(iface);
284 system_flush_routes();
288 __set_config_state(struct interface *iface, enum interface_config_state s)
290 iface->config_state = s;
294 __interface_set_down(struct interface *iface, bool force)
296 enum interface_state state = iface->state;
300 iface->state = IFS_TEARDOWN;
302 __set_config_state(iface, IFC_REMOVE);
305 interface_event(iface, IFEV_DOWN);
307 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
309 interface_flush_state(iface);
313 if (iface->main_dev.dev)
314 device_release(&iface->main_dev);
322 __interface_set_up(struct interface *iface)
326 netifd_log_message(L_NOTICE, "Interface '%s' is setting up now\n", iface->name);
328 iface->state = IFS_SETUP;
329 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
331 mark_interface_down(iface);
337 interface_check_state(struct interface *iface)
339 bool link_state = iface->link_state || iface->force_link;
341 switch (iface->state) {
344 if (!iface->enabled || !link_state) {
345 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
347 __set_config_state(iface, IFC_REMOVE);
349 mark_interface_down(iface);
353 if (!iface->available)
356 if (iface->autostart && iface->enabled && link_state && !config_init)
357 __interface_set_up(iface);
365 interface_set_enabled(struct interface *iface, bool new_state)
367 if (iface->enabled == new_state)
370 netifd_log_message(L_NOTICE, "Interface '%s' is %s\n", iface->name, new_state ? "enabled" : "disabled");
371 iface->enabled = new_state;
372 interface_check_state(iface);
376 interface_set_link_state(struct interface *iface, bool new_state)
378 if (iface->link_state == new_state)
381 netifd_log_message(L_NOTICE, "Interface '%s' has link connectivity %s\n", iface->name, new_state ? "" : "loss");
382 iface->link_state = new_state;
383 interface_check_state(iface);
385 if (new_state && iface->force_link && iface->state == IFS_UP && !iface->link_up_event) {
386 interface_event(iface, IFEV_LINK_UP);
387 iface->link_up_event = true;
392 interface_ext_dev_cb(struct device_user *dep, enum device_event ev)
394 if (ev == DEV_EVENT_REMOVE)
395 device_remove_user(dep);
399 interface_main_dev_cb(struct device_user *dep, enum device_event ev)
401 struct interface *iface;
403 iface = container_of(dep, struct interface, main_dev);
406 interface_set_available(iface, true);
408 case DEV_EVENT_REMOVE:
409 interface_set_available(iface, false);
410 if (dep->dev && dep->dev->external)
411 interface_set_main_dev(iface, NULL);
414 interface_set_enabled(iface, true);
417 interface_set_enabled(iface, false);
419 case DEV_EVENT_LINK_UP:
420 interface_set_link_state(iface, true);
422 case DEV_EVENT_LINK_DOWN:
423 interface_set_link_state(iface, false);
425 case DEV_EVENT_TOPO_CHANGE:
426 interface_proto_event(iface->proto, PROTO_CMD_RENEW, false);
434 interface_l3_dev_cb(struct device_user *dep, enum device_event ev)
436 struct interface *iface;
438 iface = container_of(dep, struct interface, l3_dev);
439 if (iface->l3_dev.dev == iface->main_dev.dev)
443 case DEV_EVENT_LINK_DOWN:
444 if (iface->proto_handler->flags & PROTO_FLAG_TEARDOWN_ON_L3_LINK_DOWN)
445 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
453 interface_set_available(struct interface *iface, bool new_state)
455 if (iface->available == new_state)
458 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
459 iface->available = new_state;
462 if (iface->autostart && !config_init)
463 interface_set_up(iface);
465 __interface_set_down(iface, true);
469 interface_add_user(struct interface_user *dep, struct interface *iface)
472 list_add(&dep->list, &iface_all_users);
477 list_add(&dep->list, &iface->users);
478 if (iface->state == IFS_UP)
479 dep->cb(dep, iface, IFEV_UP);
483 interface_remove_user(struct interface_user *dep)
485 list_del_init(&dep->list);
490 interface_add_assignment_classes(struct interface *iface, struct blob_attr *list)
492 struct blob_attr *cur;
495 blobmsg_for_each_attr(cur, list, rem) {
496 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
499 if (!blobmsg_check_attr(cur, NULL))
502 struct interface_assignment_class *c = malloc(sizeof(*c) + blobmsg_data_len(cur));
503 memcpy(c->name, blobmsg_data(cur), blobmsg_data_len(cur));
504 list_add(&c->head, &iface->assignment_classes);
509 interface_clear_assignment_classes(struct interface *iface)
511 while (!list_empty(&iface->assignment_classes)) {
512 struct interface_assignment_class *c = list_first_entry(&iface->assignment_classes,
513 struct interface_assignment_class, head);
520 interface_merge_assignment_data(struct interface *old, struct interface *new)
522 bool changed = (old->assignment_hint != new->assignment_hint ||
523 old->assignment_length != new->assignment_length ||
524 old->assignment_iface_id_selection != new->assignment_iface_id_selection ||
525 old->assignment_weight != new->assignment_weight ||
526 (old->assignment_iface_id_selection == IFID_FIXED &&
527 memcmp(&old->assignment_fixed_iface_id, &new->assignment_fixed_iface_id,
528 sizeof(old->assignment_fixed_iface_id))) ||
529 list_empty(&old->assignment_classes) != list_empty(&new->assignment_classes));
531 struct interface_assignment_class *c;
532 list_for_each_entry(c, &new->assignment_classes, head) {
533 /* Compare list entries one-by-one to see if there was a change */
534 if (list_empty(&old->assignment_classes)) /* The new list is longer */
540 struct interface_assignment_class *c_old = list_first_entry(&old->assignment_classes,
541 struct interface_assignment_class, head);
543 if (strcmp(c_old->name, c->name)) /* An entry didn't match */
546 list_del(&c_old->head);
550 /* The old list was longer than the new one or the last entry didn't match */
551 if (!list_empty(&old->assignment_classes)) {
552 interface_clear_assignment_classes(old);
556 list_splice_init(&new->assignment_classes, &old->assignment_classes);
559 old->assignment_hint = new->assignment_hint;
560 old->assignment_length = new->assignment_length;
561 old->assignment_iface_id_selection = new->assignment_iface_id_selection;
562 old->assignment_fixed_iface_id = new->assignment_fixed_iface_id;
563 old->assignment_weight = new->assignment_weight;
564 interface_refresh_assignments(true);
569 interface_alias_cb(struct interface_user *dep, struct interface *iface, enum interface_event ev)
571 struct interface *alias = container_of(dep, struct interface, parent_iface);
572 struct device *dev = iface->l3_dev.dev;
579 interface_set_main_dev(alias, dev);
580 interface_set_available(alias, true);
584 interface_set_available(alias, false);
585 interface_set_main_dev(alias, NULL);
588 interface_remove_user(dep);
596 interface_set_device_config(struct interface *iface, struct device *dev)
598 if (!dev || !dev->default_config)
601 if (!iface->device_config &&
602 (!dev->iface_config || dev->config_iface != iface))
605 dev->config_iface = iface;
606 dev->iface_config = iface->device_config;
607 device_apply_config(dev, dev->type, iface->config);
611 interface_claim_device(struct interface *iface)
613 struct interface *parent;
614 struct device *dev = NULL;
616 if (iface->parent_iface.iface)
617 interface_remove_user(&iface->parent_iface);
621 if (iface->parent_ifname) {
622 parent = vlist_find(&interfaces, iface->parent_ifname, parent, node);
623 iface->parent_iface.cb = interface_alias_cb;
624 interface_add_user(&iface->parent_iface, parent);
625 } else if (iface->ifname &&
626 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
627 dev = device_get(iface->ifname, true);
628 interface_set_device_config(iface, dev);
630 dev = iface->ext_dev.dev;
634 interface_set_main_dev(iface, dev);
638 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
639 interface_set_available(iface, true);
643 interface_cleanup_state(struct interface *iface)
645 interface_set_available(iface, false);
647 interface_flush_state(iface);
648 interface_clear_errors(iface);
649 interface_set_proto_state(iface, NULL);
651 interface_set_main_dev(iface, NULL);
652 interface_set_l3_dev(iface, NULL);
656 interface_cleanup(struct interface *iface)
658 struct interface_user *dep, *tmp;
660 uloop_timeout_cancel(&iface->remove_timer);
661 device_remove_user(&iface->ext_dev);
663 if (iface->parent_iface.iface)
664 interface_remove_user(&iface->parent_iface);
666 list_for_each_entry_safe(dep, tmp, &iface->users, list)
667 interface_remove_user(dep);
669 interface_clear_assignment_classes(iface);
670 interface_ip_flush(&iface->config_ip);
671 interface_cleanup_state(iface);
675 interface_do_free(struct interface *iface)
677 interface_event(iface, IFEV_FREE);
678 interface_cleanup(iface);
680 netifd_ubus_remove_interface(iface);
681 avl_delete(&interfaces.avl, &iface->node.avl);
686 interface_do_reload(struct interface *iface)
688 interface_event(iface, IFEV_RELOAD);
689 interface_cleanup_state(iface);
690 proto_init_interface(iface, iface->config);
691 interface_claim_device(iface);
695 interface_handle_config_change(struct interface *iface)
697 enum interface_config_state state = iface->config_state;
699 iface->config_state = IFC_NORMAL;
704 interface_do_reload(iface);
707 interface_do_free(iface);
710 if (iface->autostart)
711 interface_set_up(iface);
715 interface_proto_event_cb(struct interface_proto_state *state, enum interface_proto_event ev)
717 struct interface *iface = state->iface;
721 if (iface->state != IFS_SETUP) {
722 if (iface->state == IFS_UP && iface->updated)
723 interface_event(iface, IFEV_UPDATE);
727 if (!iface->l3_dev.dev)
728 interface_set_l3_dev(iface, iface->main_dev.dev);
730 interface_ip_set_enabled(&iface->config_ip, true);
731 interface_ip_set_enabled(&iface->proto_ip, true);
732 system_flush_routes();
733 iface->state = IFS_UP;
734 iface->start_time = system_get_rtime();
735 interface_event(iface, IFEV_UP);
736 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
739 if (iface->state == IFS_DOWN)
742 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
743 mark_interface_down(iface);
744 if (iface->main_dev.dev)
745 device_release(&iface->main_dev);
746 if (iface->l3_dev.dev)
747 device_remove_user(&iface->l3_dev);
748 interface_handle_config_change(iface);
750 case IFPEV_LINK_LOST:
751 if (iface->state != IFS_UP)
754 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
755 mark_interface_down(iface);
756 iface->state = IFS_SETUP;
762 interface_write_resolv_conf();
765 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
768 iface->proto->free(iface->proto);
771 iface->state = IFS_DOWN;
772 iface->proto = state;
776 state->proto_event = interface_proto_event_cb;
777 state->iface = iface;
781 interface_alloc(const char *name, struct blob_attr *config, bool dynamic)
783 struct interface *iface;
784 struct blob_attr *tb[IFACE_ATTR_MAX];
785 struct blob_attr *cur;
786 const char *proto_name = NULL;
788 bool force_link = false;
790 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
791 iface->name = strcpy(iface_name, name);
792 INIT_LIST_HEAD(&iface->errors);
793 INIT_LIST_HEAD(&iface->users);
794 INIT_LIST_HEAD(&iface->hotplug_list);
795 INIT_LIST_HEAD(&iface->assignment_classes);
796 interface_ip_init(iface);
797 avl_init(&iface->data, avl_strcmp, false, NULL);
798 iface->config_ip.enabled = false;
800 iface->main_dev.cb = interface_main_dev_cb;
801 iface->l3_dev.cb = interface_l3_dev_cb;
802 iface->ext_dev.cb = interface_ext_dev_cb;
804 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
805 blob_data(config), blob_len(config));
807 if ((cur = tb[IFACE_ATTR_PROTO]))
808 proto_name = blobmsg_data(cur);
810 proto_attach_interface(iface, proto_name);
811 if (iface->proto_handler->flags & PROTO_FLAG_FORCE_LINK_DEFAULT)
814 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
815 iface->force_link = blobmsg_get_bool_default(tb[IFACE_ATTR_FORCE_LINK], force_link);
816 iface->dynamic = dynamic;
817 iface->proto_ip.no_defaultroute =
818 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
819 iface->proto_ip.no_dns =
820 !blobmsg_get_bool_default(tb[IFACE_ATTR_PEERDNS], true);
822 if ((cur = tb[IFACE_ATTR_DNS]))
823 interface_add_dns_server_list(&iface->config_ip, cur);
825 if ((cur = tb[IFACE_ATTR_DNS_SEARCH]))
826 interface_add_dns_search_list(&iface->config_ip, cur);
828 if ((cur = tb[IFACE_ATTR_DNS_METRIC]))
829 iface->dns_metric = blobmsg_get_u32(cur);
831 if ((cur = tb[IFACE_ATTR_METRIC]))
832 iface->metric = blobmsg_get_u32(cur);
834 if ((cur = tb[IFACE_ATTR_IP6ASSIGN]))
835 iface->assignment_length = blobmsg_get_u32(cur);
838 iface->assignment_iface_id_selection = IFID_FIXED;
839 iface->assignment_fixed_iface_id = in6addr_any;
840 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
842 if ((cur = tb[IFACE_ATTR_IP6IFACEID])) {
843 const char *ifaceid = blobmsg_data(cur);
844 if (!strcmp(ifaceid, "random")) {
845 iface->assignment_iface_id_selection = IFID_RANDOM;
847 else if (!strcmp(ifaceid, "eui64")) {
848 iface->assignment_iface_id_selection = IFID_EUI64;
851 /* we expect an IPv6 address with network id zero here -> fixed iface id
852 if we cannot parse -> revert to iface id 1 */
853 if (inet_pton(AF_INET6,ifaceid,&iface->assignment_fixed_iface_id) != 1 ||
854 iface->assignment_fixed_iface_id.s6_addr32[0] != 0 ||
855 iface->assignment_fixed_iface_id.s6_addr32[1] != 0) {
856 iface->assignment_fixed_iface_id = in6addr_any;
857 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
858 netifd_log_message(L_WARNING, "Failed to parse ip6ifaceid for interface '%s', \
859 falling back to iface id 1.\n", iface->name);
864 iface->assignment_hint = -1;
865 if ((cur = tb[IFACE_ATTR_IP6HINT]))
866 iface->assignment_hint = strtol(blobmsg_get_string(cur), NULL, 16) &
867 ~((1 << (64 - iface->assignment_length)) - 1);
869 if ((cur = tb[IFACE_ATTR_IP6CLASS]))
870 interface_add_assignment_classes(iface, cur);
872 if ((cur = tb[IFACE_ATTR_IP6WEIGHT]))
873 iface->assignment_weight = blobmsg_get_u32(cur);
875 if ((cur = tb[IFACE_ATTR_IP4TABLE])) {
876 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip4table))
877 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
880 if ((cur = tb[IFACE_ATTR_IP6TABLE])) {
881 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip6table))
882 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
885 iface->proto_ip.no_delegation = !blobmsg_get_bool_default(tb[IFACE_ATTR_DELEGATE], true);
887 iface->config_autostart = iface->autostart;
891 static bool __interface_add(struct interface *iface, struct blob_attr *config, bool alias)
893 struct blob_attr *tb[IFACE_ATTR_MAX];
894 struct blob_attr *cur;
897 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
898 blob_data(config), blob_len(config));
901 if ((cur = tb[IFACE_ATTR_INTERFACE]))
902 iface->parent_ifname = blobmsg_data(cur);
904 if (!iface->parent_ifname)
907 if ((cur = tb[IFACE_ATTR_IFNAME]))
908 iface->ifname = blobmsg_data(cur);
911 if (iface->dynamic) {
912 name = strdup(iface->name);
918 iface->config = config;
919 vlist_add(&interfaces, &iface->node, iface->name);
922 iface = vlist_find(&interfaces, name, iface, node);
925 /* Don't delete dynamic interface on reload */
927 iface->node.version = -1;
934 interface_add(struct interface *iface, struct blob_attr *config)
936 return __interface_add(iface, config, false);
940 interface_add_alias(struct interface *iface, struct blob_attr *config)
942 if (iface->proto_handler->flags & PROTO_FLAG_NODEV)
945 return __interface_add(iface, config, true);
949 interface_set_l3_dev(struct interface *iface, struct device *dev)
951 bool enabled = iface->config_ip.enabled;
952 bool claimed = iface->l3_dev.claimed;
954 if (iface->l3_dev.dev == dev)
957 interface_ip_set_enabled(&iface->config_ip, false);
958 interface_ip_set_enabled(&iface->proto_ip, false);
959 interface_ip_flush(&iface->proto_ip);
960 device_add_user(&iface->l3_dev, dev);
964 if (device_claim(&iface->l3_dev) < 0)
967 interface_ip_set_enabled(&iface->config_ip, enabled);
968 interface_ip_set_enabled(&iface->proto_ip, enabled);
973 interface_set_main_dev(struct interface *iface, struct device *dev)
975 bool claimed = iface->l3_dev.claimed;
977 if (iface->main_dev.dev == dev)
980 interface_set_available(iface, false);
981 device_add_user(&iface->main_dev, dev);
983 interface_set_link_state(iface, false);
988 if (device_claim(&iface->l3_dev) < 0)
992 if (!iface->l3_dev.dev)
993 interface_set_l3_dev(iface, dev);
997 interface_remove_link(struct interface *iface, struct device *dev)
999 struct device *mdev = iface->main_dev.dev;
1001 if (mdev && mdev->hotplug_ops)
1002 return mdev->hotplug_ops->del(mdev, dev);
1004 if (dev == iface->ext_dev.dev)
1005 device_remove_user(&iface->ext_dev);
1007 if (!iface->main_dev.hotplug)
1008 return UBUS_STATUS_INVALID_ARGUMENT;
1010 if (dev != iface->main_dev.dev)
1011 return UBUS_STATUS_INVALID_ARGUMENT;
1013 interface_set_main_dev(iface, NULL);
1018 interface_add_link(struct interface *iface, struct device *dev, bool link_ext)
1020 struct device *mdev = iface->main_dev.dev;
1025 if (iface->main_dev.hotplug)
1026 device_remove_user(&iface->main_dev);
1029 if (mdev->hotplug_ops)
1030 return mdev->hotplug_ops->add(mdev, dev);
1032 return UBUS_STATUS_NOT_SUPPORTED;
1036 device_add_user(&iface->ext_dev, dev);
1038 interface_set_main_dev(iface, dev);
1039 iface->main_dev.hotplug = true;
1044 interface_handle_link(struct interface *iface, const char *name, bool add, bool link_ext)
1051 dev = device_get(name, add ? (link_ext ? 2 : 1) : 0);
1053 ret = UBUS_STATUS_NOT_FOUND;
1058 interface_set_device_config(iface, dev);
1059 device_set_present(dev, true);
1061 ret = interface_add_link(iface, dev, link_ext);
1063 ret = interface_remove_link(iface, dev);
1073 interface_set_up(struct interface *iface)
1076 const char *error = NULL;
1078 iface->autostart = true;
1080 if (iface->state != IFS_DOWN)
1083 interface_clear_errors(iface);
1084 if (iface->available) {
1085 if (iface->main_dev.dev) {
1086 ret = device_claim(&iface->main_dev);
1088 interface_check_state(iface);
1090 error = "DEVICE_CLAIM_FAILED";
1092 ret = __interface_set_up(iface);
1094 error = "SETUP_FAILED";
1097 error = "NO_DEVICE";
1100 interface_add_error(iface, "interface", error, NULL, 0);
1104 interface_set_down(struct interface *iface)
1107 vlist_for_each_element(&interfaces, iface, node)
1108 __interface_set_down(iface, false);
1110 iface->autostart = false;
1111 __interface_set_down(iface, false);
1116 interface_renew(struct interface *iface)
1118 if (iface->state == IFS_TEARDOWN || iface->state == IFS_DOWN)
1121 return interface_proto_event(iface->proto, PROTO_CMD_RENEW, false);
1125 interface_start_pending(void)
1127 struct interface *iface;
1129 vlist_for_each_element(&interfaces, iface, node) {
1130 if (iface->autostart)
1131 interface_set_up(iface);
1136 set_config_state(struct interface *iface, enum interface_config_state s)
1138 __set_config_state(iface, s);
1139 if (iface->state == IFS_DOWN)
1140 interface_handle_config_change(iface);
1142 __interface_set_down(iface, false);
1146 interface_update_start(struct interface *iface, const bool keep_old)
1151 interface_ip_update_start(&iface->proto_ip);
1155 interface_update_complete(struct interface *iface)
1157 interface_ip_update_complete(&iface->proto_ip);
1161 interface_replace_dns(struct interface_ip_settings *new, struct interface_ip_settings *old)
1163 vlist_simple_replace(&new->dns_servers, &old->dns_servers);
1164 vlist_simple_replace(&new->dns_search, &old->dns_search);
1168 interface_device_config_changed(struct interface *if_old, struct interface *if_new)
1170 struct blob_attr *ntb[__DEV_ATTR_MAX];
1171 struct blob_attr *otb[__DEV_ATTR_MAX];
1172 struct device *dev = if_old->main_dev.dev;
1173 unsigned long diff = 0;
1175 BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / 8);
1180 if (if_old->device_config != if_new->device_config)
1183 if (!if_new->device_config)
1186 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb,
1187 blob_data(if_old->config), blob_len(if_old->config));
1189 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, ntb,
1190 blob_data(if_new->config), blob_len(if_new->config));
1192 uci_blob_diff(ntb, otb, &device_attr_list, &diff);
1197 interface_change_config(struct interface *if_old, struct interface *if_new)
1199 struct blob_attr *old_config = if_old->config;
1200 bool reload = false, reload_ip = false, update_prefix_delegation = false;
1202 #define FIELD_CHANGED_STR(field) \
1203 ((!!if_old->field != !!if_new->field) || \
1205 strcmp(if_old->field, if_new->field) != 0))
1207 if (FIELD_CHANGED_STR(parent_ifname)) {
1208 if (if_old->parent_iface.iface)
1209 interface_remove_user(&if_old->parent_iface);
1213 if (!reload && interface_device_config_changed(if_old, if_new))
1216 if (FIELD_CHANGED_STR(ifname) ||
1217 if_old->proto_handler != if_new->proto_handler)
1220 if (!if_old->proto_handler->config_params)
1221 D(INTERFACE, "No config parameters for interface '%s'\n",
1223 else if (!uci_blob_check_equal(if_old->config, if_new->config,
1224 if_old->proto_handler->config_params))
1227 #define UPDATE(field, __var) ({ \
1228 bool __changed = (if_old->field != if_new->field); \
1229 if_old->field = if_new->field; \
1230 __var |= __changed; \
1233 if_old->config = if_new->config;
1234 if (if_old->config_autostart != if_new->config_autostart) {
1235 if (if_old->config_autostart)
1238 if_old->autostart = if_new->config_autostart;
1241 if_old->device_config = if_new->device_config;
1242 if_old->config_autostart = if_new->config_autostart;
1243 if_old->ifname = if_new->ifname;
1244 if_old->parent_ifname = if_new->parent_ifname;
1245 if_old->dynamic = if_new->dynamic;
1246 if_old->proto_handler = if_new->proto_handler;
1247 if_old->force_link = if_new->force_link;
1248 if_old->dns_metric = if_new->dns_metric;
1250 if (if_old->proto_ip.no_delegation != if_new->proto_ip.no_delegation) {
1251 if_old->proto_ip.no_delegation = if_new->proto_ip.no_delegation;
1252 update_prefix_delegation = true;
1255 if_old->proto_ip.no_dns = if_new->proto_ip.no_dns;
1256 interface_replace_dns(&if_old->config_ip, &if_new->config_ip);
1258 UPDATE(metric, reload_ip);
1259 UPDATE(proto_ip.no_defaultroute, reload_ip);
1260 UPDATE(ip4table, reload_ip);
1261 UPDATE(ip6table, reload_ip);
1262 interface_merge_assignment_data(if_old, if_new);
1267 D(INTERFACE, "Reload interface '%s' because of config changes\n",
1269 interface_clear_errors(if_old);
1270 set_config_state(if_old, IFC_RELOAD);
1275 bool config_ip_enabled = if_old->config_ip.enabled;
1276 bool proto_ip_enabled = if_old->proto_ip.enabled;
1278 interface_ip_set_enabled(&if_old->config_ip, false);
1279 interface_ip_set_enabled(&if_old->proto_ip, false);
1280 interface_ip_set_enabled(&if_old->proto_ip, proto_ip_enabled);
1281 interface_ip_set_enabled(&if_old->config_ip, config_ip_enabled);
1284 if (update_prefix_delegation)
1285 interface_update_prefix_delegation(&if_old->proto_ip);
1287 interface_write_resolv_conf();
1288 if (if_old->main_dev.dev)
1289 interface_check_state(if_old);
1292 if_new->config = NULL;
1293 interface_cleanup(if_new);
1299 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
1300 struct vlist_node *node_old)
1302 struct interface *if_old = container_of(node_old, struct interface, node);
1303 struct interface *if_new = container_of(node_new, struct interface, node);
1305 if (node_old && node_new) {
1306 D(INTERFACE, "Update interface '%s'\n", if_new->name);
1307 interface_change_config(if_old, if_new);
1308 } else if (node_old) {
1309 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
1310 set_config_state(if_old, IFC_REMOVE);
1311 } else if (node_new) {
1312 D(INTERFACE, "Create interface '%s'\n", if_new->name);
1313 interface_event(if_new, IFEV_CREATE);
1314 proto_init_interface(if_new, if_new->config);
1315 interface_claim_device(if_new);
1316 netifd_ubus_add_interface(if_new);
1322 interface_init_list(void)
1324 vlist_init(&interfaces, avl_strcmp, interface_update);
1325 interfaces.keep_old = true;
1326 interfaces.no_delete = true;