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 set_config_state(struct interface *iface, enum interface_config_state s);
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;
271 interface_event(iface, IFEV_DOWN);
273 interface_event(iface, IFEV_UP_FAILED);
274 interface_ip_set_enabled(&iface->config_ip, false);
275 interface_ip_set_enabled(&iface->proto_ip, false);
276 interface_ip_flush(&iface->proto_ip);
277 interface_flush_state(iface);
278 system_flush_routes();
282 __interface_set_down(struct interface *iface, bool force)
284 enum interface_state state = iface->state;
288 iface->state = IFS_TEARDOWN;
290 interface_event(iface, IFEV_DOWN);
292 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
294 interface_flush_state(iface);
298 if (iface->main_dev.dev)
299 device_release(&iface->main_dev);
307 __interface_set_up(struct interface *iface)
311 netifd_log_message(L_NOTICE, "Interface '%s' is setting up now\n", iface->name);
313 iface->state = IFS_SETUP;
314 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
316 mark_interface_down(iface);
322 interface_check_state(struct interface *iface)
324 bool link_state = iface->link_state || iface->force_link;
326 switch (iface->state) {
329 if (!iface->enabled || !link_state) {
330 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
331 mark_interface_down(iface);
335 if (!iface->available)
338 if (iface->autostart && iface->enabled && link_state && !config_init)
339 __interface_set_up(iface);
347 interface_set_enabled(struct interface *iface, bool new_state)
349 if (iface->enabled == new_state)
352 netifd_log_message(L_NOTICE, "Interface '%s' is %s\n", iface->name, new_state ? "enabled" : "disabled");
353 iface->enabled = new_state;
354 interface_check_state(iface);
358 interface_set_link_state(struct interface *iface, bool new_state)
360 if (iface->link_state == new_state)
363 netifd_log_message(L_NOTICE, "Interface '%s' has link connectivity %s\n", iface->name, new_state ? "" : "loss");
364 iface->link_state = new_state;
365 interface_check_state(iface);
367 if (new_state && iface->force_link && iface->state == IFS_UP && !iface->link_up_event) {
368 interface_event(iface, IFEV_LINK_UP);
369 iface->link_up_event = true;
374 interface_ext_dev_cb(struct device_user *dep, enum device_event ev)
376 if (ev == DEV_EVENT_REMOVE)
377 device_remove_user(dep);
381 interface_main_dev_cb(struct device_user *dep, enum device_event ev)
383 struct interface *iface;
384 bool new_state = false;
386 iface = container_of(dep, struct interface, main_dev);
390 case DEV_EVENT_REMOVE:
391 interface_set_available(iface, new_state);
392 if (!new_state && dep->dev && dep->dev->external)
393 interface_set_main_dev(iface, NULL);
398 interface_set_enabled(iface, new_state);
400 case DEV_EVENT_LINK_UP:
402 case DEV_EVENT_LINK_DOWN:
403 interface_set_link_state(iface, new_state);
405 case DEV_EVENT_TOPO_CHANGE:
406 interface_proto_event(iface->proto, PROTO_CMD_RENEW, false);
414 interface_l3_dev_cb(struct device_user *dep, enum device_event ev)
416 struct interface *iface;
418 iface = container_of(dep, struct interface, l3_dev);
419 if (iface->l3_dev.dev == iface->main_dev.dev)
423 case DEV_EVENT_LINK_DOWN:
424 if (iface->proto_handler->flags & PROTO_FLAG_TEARDOWN_ON_L3_LINK_DOWN)
425 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
433 interface_set_available(struct interface *iface, bool new_state)
435 if (iface->available == new_state)
438 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
439 iface->available = new_state;
442 if (iface->autostart && !config_init)
443 interface_set_up(iface);
445 __interface_set_down(iface, true);
449 interface_add_user(struct interface_user *dep, struct interface *iface)
452 list_add(&dep->list, &iface_all_users);
457 list_add(&dep->list, &iface->users);
458 if (iface->state == IFS_UP)
459 dep->cb(dep, iface, IFEV_UP);
463 interface_remove_user(struct interface_user *dep)
465 list_del_init(&dep->list);
470 interface_add_assignment_classes(struct interface *iface, struct blob_attr *list)
472 struct blob_attr *cur;
475 blobmsg_for_each_attr(cur, list, rem) {
476 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
479 if (!blobmsg_check_attr(cur, NULL))
482 struct interface_assignment_class *c = malloc(sizeof(*c) + blobmsg_data_len(cur));
483 memcpy(c->name, blobmsg_data(cur), blobmsg_data_len(cur));
484 list_add(&c->head, &iface->assignment_classes);
489 interface_clear_assignment_classes(struct interface *iface)
491 while (!list_empty(&iface->assignment_classes)) {
492 struct interface_assignment_class *c = list_first_entry(&iface->assignment_classes,
493 struct interface_assignment_class, head);
500 interface_merge_assignment_data(struct interface *old, struct interface *new)
502 bool changed = (old->assignment_hint != new->assignment_hint ||
503 old->assignment_length != new->assignment_length ||
504 old->assignment_iface_id_selection != new->assignment_iface_id_selection ||
505 old->assignment_weight != new->assignment_weight ||
506 (old->assignment_iface_id_selection == IFID_FIXED &&
507 memcmp(&old->assignment_fixed_iface_id, &new->assignment_fixed_iface_id,
508 sizeof(old->assignment_fixed_iface_id))) ||
509 list_empty(&old->assignment_classes) != list_empty(&new->assignment_classes));
511 struct interface_assignment_class *c;
512 list_for_each_entry(c, &new->assignment_classes, head) {
513 // Compare list entries one-by-one to see if there was a change
514 if (list_empty(&old->assignment_classes)) // The new list is longer
520 struct interface_assignment_class *c_old = list_first_entry(&old->assignment_classes,
521 struct interface_assignment_class, head);
523 if (strcmp(c_old->name, c->name)) // An entry didn't match
526 list_del(&c_old->head);
530 // The old list was longer than the new one or the last entry didn't match
531 if (!list_empty(&old->assignment_classes)) {
532 interface_clear_assignment_classes(old);
536 list_splice_init(&new->assignment_classes, &old->assignment_classes);
539 old->assignment_hint = new->assignment_hint;
540 old->assignment_length = new->assignment_length;
541 old->assignment_iface_id_selection = new->assignment_iface_id_selection;
542 old->assignment_fixed_iface_id = new->assignment_fixed_iface_id;
543 old->assignment_weight = new->assignment_weight;
544 interface_refresh_assignments(true);
549 interface_alias_cb(struct interface_user *dep, struct interface *iface, enum interface_event ev)
551 struct interface *alias = container_of(dep, struct interface, parent_iface);
552 struct device *dev = iface->l3_dev.dev;
559 interface_set_main_dev(alias, dev);
560 interface_set_available(alias, true);
564 interface_set_available(alias, false);
565 interface_set_main_dev(alias, NULL);
568 interface_remove_user(dep);
576 interface_set_device_config(struct interface *iface, struct device *dev)
578 if (!dev || !dev->default_config)
581 if (!iface->device_config &&
582 (!dev->iface_config || dev->config_iface != iface))
585 dev->config_iface = iface;
586 dev->iface_config = iface->device_config;
587 device_apply_config(dev, dev->type, iface->config);
591 interface_claim_device(struct interface *iface)
593 struct interface *parent;
594 struct device *dev = NULL;
596 if (iface->parent_iface.iface)
597 interface_remove_user(&iface->parent_iface);
601 if (iface->parent_ifname) {
602 parent = vlist_find(&interfaces, iface->parent_ifname, parent, node);
603 iface->parent_iface.cb = interface_alias_cb;
604 interface_add_user(&iface->parent_iface, parent);
605 } else if (iface->ifname &&
606 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
607 dev = device_get(iface->ifname, true);
608 interface_set_device_config(iface, dev);
610 dev = iface->ext_dev.dev;
614 interface_set_main_dev(iface, dev);
618 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
619 interface_set_available(iface, true);
623 interface_cleanup_state(struct interface *iface)
625 interface_set_available(iface, false);
627 interface_flush_state(iface);
628 interface_clear_errors(iface);
629 interface_set_proto_state(iface, NULL);
631 interface_set_main_dev(iface, NULL);
632 interface_set_l3_dev(iface, NULL);
636 interface_cleanup(struct interface *iface)
638 struct interface_user *dep, *tmp;
640 uloop_timeout_cancel(&iface->remove_timer);
641 device_remove_user(&iface->ext_dev);
643 if (iface->parent_iface.iface)
644 interface_remove_user(&iface->parent_iface);
646 list_for_each_entry_safe(dep, tmp, &iface->users, list)
647 interface_remove_user(dep);
649 interface_clear_assignment_classes(iface);
650 interface_ip_flush(&iface->config_ip);
651 interface_cleanup_state(iface);
655 interface_do_free(struct interface *iface)
657 interface_event(iface, IFEV_FREE);
658 interface_cleanup(iface);
660 netifd_ubus_remove_interface(iface);
661 avl_delete(&interfaces.avl, &iface->node.avl);
666 interface_do_reload(struct interface *iface)
668 interface_event(iface, IFEV_RELOAD);
669 interface_cleanup_state(iface);
670 proto_init_interface(iface, iface->config);
671 interface_claim_device(iface);
675 interface_handle_config_change(struct interface *iface)
677 enum interface_config_state state = iface->config_state;
679 iface->config_state = IFC_NORMAL;
684 interface_do_reload(iface);
687 interface_do_free(iface);
690 if (iface->autostart && iface->available)
691 interface_set_up(iface);
692 else if (iface->dynamic)
693 set_config_state(iface, IFC_REMOVE);
697 interface_proto_event_cb(struct interface_proto_state *state, enum interface_proto_event ev)
699 struct interface *iface = state->iface;
703 if (iface->state != IFS_SETUP) {
704 if (iface->state == IFS_UP && iface->updated)
705 interface_event(iface, IFEV_UPDATE);
709 if (!iface->l3_dev.dev)
710 interface_set_l3_dev(iface, iface->main_dev.dev);
712 interface_ip_set_enabled(&iface->config_ip, true);
713 interface_ip_set_enabled(&iface->proto_ip, true);
714 system_flush_routes();
715 iface->state = IFS_UP;
716 iface->start_time = system_get_rtime();
717 interface_event(iface, IFEV_UP);
718 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
721 if (iface->state == IFS_DOWN)
724 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
725 mark_interface_down(iface);
726 if (iface->main_dev.dev)
727 device_release(&iface->main_dev);
728 if (iface->l3_dev.dev)
729 device_remove_user(&iface->l3_dev);
730 interface_handle_config_change(iface);
732 case IFPEV_LINK_LOST:
733 if (iface->state != IFS_UP)
736 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
737 mark_interface_down(iface);
738 iface->state = IFS_SETUP;
744 interface_write_resolv_conf();
747 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
750 iface->proto->free(iface->proto);
753 iface->state = IFS_DOWN;
754 iface->proto = state;
758 state->proto_event = interface_proto_event_cb;
759 state->iface = iface;
763 interface_alloc(const char *name, struct blob_attr *config)
765 struct interface *iface;
766 struct blob_attr *tb[IFACE_ATTR_MAX];
767 struct blob_attr *cur;
768 const char *proto_name = NULL;
770 bool force_link = false;
772 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
773 iface->name = strcpy(iface_name, name);
774 INIT_LIST_HEAD(&iface->errors);
775 INIT_LIST_HEAD(&iface->users);
776 INIT_LIST_HEAD(&iface->hotplug_list);
777 INIT_LIST_HEAD(&iface->assignment_classes);
778 interface_ip_init(iface);
779 avl_init(&iface->data, avl_strcmp, false, NULL);
780 iface->config_ip.enabled = false;
782 iface->main_dev.cb = interface_main_dev_cb;
783 iface->l3_dev.cb = interface_l3_dev_cb;
784 iface->ext_dev.cb = interface_ext_dev_cb;
786 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
787 blob_data(config), blob_len(config));
789 if ((cur = tb[IFACE_ATTR_PROTO]))
790 proto_name = blobmsg_data(cur);
792 proto_attach_interface(iface, proto_name);
793 if (iface->proto_handler->flags & PROTO_FLAG_FORCE_LINK_DEFAULT)
796 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
797 iface->force_link = blobmsg_get_bool_default(tb[IFACE_ATTR_FORCE_LINK], force_link);
798 iface->proto_ip.no_defaultroute =
799 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
800 iface->proto_ip.no_dns =
801 !blobmsg_get_bool_default(tb[IFACE_ATTR_PEERDNS], true);
803 if ((cur = tb[IFACE_ATTR_DNS]))
804 interface_add_dns_server_list(&iface->config_ip, cur);
806 if ((cur = tb[IFACE_ATTR_DNS_SEARCH]))
807 interface_add_dns_search_list(&iface->config_ip, cur);
809 if ((cur = tb[IFACE_ATTR_DNS_METRIC]))
810 iface->dns_metric = blobmsg_get_u32(cur);
812 if ((cur = tb[IFACE_ATTR_METRIC]))
813 iface->metric = blobmsg_get_u32(cur);
815 if ((cur = tb[IFACE_ATTR_IP6ASSIGN]))
816 iface->assignment_length = blobmsg_get_u32(cur);
819 iface->assignment_iface_id_selection = IFID_FIXED;
820 iface->assignment_fixed_iface_id = in6addr_any;
821 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
823 if ((cur = tb[IFACE_ATTR_IP6IFACEID])) {
824 const char *ifaceid = blobmsg_data(cur);
825 if (!strcmp(ifaceid, "random")) {
826 iface->assignment_iface_id_selection = IFID_RANDOM;
828 else if (!strcmp(ifaceid, "eui64")) {
829 iface->assignment_iface_id_selection = IFID_EUI64;
832 /* we expect an IPv6 address with network id zero here -> fixed iface id
833 if we cannot parse -> revert to iface id 1 */
834 if (inet_pton(AF_INET6,ifaceid,&iface->assignment_fixed_iface_id) != 1 ||
835 iface->assignment_fixed_iface_id.s6_addr32[0] != 0 ||
836 iface->assignment_fixed_iface_id.s6_addr32[1] != 0) {
837 iface->assignment_fixed_iface_id = in6addr_any;
838 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
839 netifd_log_message(L_WARNING, "Failed to parse ip6ifaceid for interface '%s', \
840 falling back to iface id 1.\n", iface->name);
845 iface->assignment_hint = -1;
846 if ((cur = tb[IFACE_ATTR_IP6HINT]))
847 iface->assignment_hint = strtol(blobmsg_get_string(cur), NULL, 16) &
848 ~((1 << (64 - iface->assignment_length)) - 1);
850 if ((cur = tb[IFACE_ATTR_IP6CLASS]))
851 interface_add_assignment_classes(iface, cur);
853 if ((cur = tb[IFACE_ATTR_IP6WEIGHT]))
854 iface->assignment_weight = blobmsg_get_u32(cur);
856 if ((cur = tb[IFACE_ATTR_IP4TABLE])) {
857 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip4table))
858 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
861 if ((cur = tb[IFACE_ATTR_IP6TABLE])) {
862 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip6table))
863 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
866 iface->proto_ip.no_delegation = !blobmsg_get_bool_default(tb[IFACE_ATTR_DELEGATE], true);
868 iface->config_autostart = iface->autostart;
872 void interface_set_dynamic(struct interface *iface)
874 iface->dynamic = true;
875 iface->autostart = true;
876 iface->node.version = -1; // Don't delete on reload
879 static bool __interface_add(struct interface *iface, struct blob_attr *config, bool alias)
881 struct blob_attr *tb[IFACE_ATTR_MAX];
882 struct blob_attr *cur;
884 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
885 blob_data(config), blob_len(config));
888 if ((cur = tb[IFACE_ATTR_INTERFACE]))
889 iface->parent_ifname = blobmsg_data(cur);
891 if (!iface->parent_ifname)
894 if ((cur = tb[IFACE_ATTR_IFNAME]))
895 iface->ifname = blobmsg_data(cur);
898 iface->config = config;
899 vlist_add(&interfaces, &iface->node, iface->name);
904 interface_add(struct interface *iface, struct blob_attr *config)
906 __interface_add(iface, config, false);
910 interface_add_alias(struct interface *iface, struct blob_attr *config)
912 if (iface->proto_handler->flags & PROTO_FLAG_NODEV)
915 return __interface_add(iface, config, true);
919 interface_set_l3_dev(struct interface *iface, struct device *dev)
921 bool enabled = iface->config_ip.enabled;
922 bool claimed = iface->l3_dev.claimed;
924 if (iface->l3_dev.dev == dev)
927 interface_ip_set_enabled(&iface->config_ip, false);
928 interface_ip_set_enabled(&iface->proto_ip, false);
929 interface_ip_flush(&iface->proto_ip);
930 device_add_user(&iface->l3_dev, dev);
934 if (device_claim(&iface->l3_dev) < 0)
937 interface_ip_set_enabled(&iface->config_ip, enabled);
938 interface_ip_set_enabled(&iface->proto_ip, enabled);
943 interface_set_main_dev(struct interface *iface, struct device *dev)
945 bool claimed = iface->l3_dev.claimed;
947 if (iface->main_dev.dev == dev)
950 interface_set_available(iface, false);
951 device_add_user(&iface->main_dev, dev);
953 interface_set_link_state(iface, false);
958 if (device_claim(&iface->l3_dev) < 0)
962 if (!iface->l3_dev.dev)
963 interface_set_l3_dev(iface, dev);
967 interface_remove_link(struct interface *iface, struct device *dev)
969 struct device *mdev = iface->main_dev.dev;
971 if (mdev && mdev->hotplug_ops)
972 return mdev->hotplug_ops->del(mdev, dev);
974 if (dev == iface->ext_dev.dev)
975 device_remove_user(&iface->ext_dev);
977 if (!iface->main_dev.hotplug)
978 return UBUS_STATUS_INVALID_ARGUMENT;
980 if (dev != iface->main_dev.dev)
981 return UBUS_STATUS_INVALID_ARGUMENT;
983 interface_set_main_dev(iface, NULL);
988 interface_add_link(struct interface *iface, struct device *dev, bool link_ext)
990 struct device *mdev = iface->main_dev.dev;
995 if (iface->main_dev.hotplug)
996 device_remove_user(&iface->main_dev);
999 if (mdev->hotplug_ops)
1000 return mdev->hotplug_ops->add(mdev, dev);
1002 return UBUS_STATUS_NOT_SUPPORTED;
1006 device_add_user(&iface->ext_dev, dev);
1008 interface_set_main_dev(iface, dev);
1009 iface->main_dev.hotplug = true;
1014 interface_handle_link(struct interface *iface, const char *name, bool add, bool link_ext)
1021 dev = device_get(name, add ? (link_ext ? 2 : 1) : 0);
1023 ret = UBUS_STATUS_NOT_FOUND;
1028 interface_set_device_config(iface, dev);
1029 device_set_present(dev, true);
1031 ret = interface_add_link(iface, dev, link_ext);
1033 ret = interface_remove_link(iface, dev);
1043 interface_set_up(struct interface *iface)
1047 iface->autostart = true;
1049 if (iface->state != IFS_DOWN)
1052 interface_clear_errors(iface);
1053 if (!iface->available) {
1054 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
1058 if (iface->main_dev.dev) {
1059 ret = device_claim(&iface->main_dev);
1061 interface_check_state(iface);
1064 ret = __interface_set_up(iface);
1070 interface_set_down(struct interface *iface)
1073 vlist_for_each_element(&interfaces, iface, node)
1074 __interface_set_down(iface, false);
1076 iface->autostart = false;
1077 __interface_set_down(iface, false);
1084 interface_renew(struct interface *iface)
1086 if (iface->state == IFS_TEARDOWN || iface->state == IFS_DOWN)
1089 return interface_proto_event(iface->proto, PROTO_CMD_RENEW, false);
1093 interface_start_pending(void)
1095 struct interface *iface;
1097 vlist_for_each_element(&interfaces, iface, node) {
1098 if (iface->available && iface->autostart)
1099 interface_set_up(iface);
1104 set_config_state(struct interface *iface, enum interface_config_state s)
1106 iface->config_state = s;
1107 if (iface->state == IFS_DOWN)
1108 interface_handle_config_change(iface);
1110 __interface_set_down(iface, false);
1114 interface_update_start(struct interface *iface, const bool keep_old)
1119 interface_ip_update_start(&iface->proto_ip);
1123 interface_update_complete(struct interface *iface)
1125 interface_ip_update_complete(&iface->proto_ip);
1129 interface_replace_dns(struct interface_ip_settings *new, struct interface_ip_settings *old)
1131 vlist_simple_replace(&new->dns_servers, &old->dns_servers);
1132 vlist_simple_replace(&new->dns_search, &old->dns_search);
1136 interface_device_config_changed(struct interface *if_old, struct interface *if_new)
1138 struct blob_attr *ntb[__DEV_ATTR_MAX];
1139 struct blob_attr *otb[__DEV_ATTR_MAX];
1140 struct device *dev = if_old->main_dev.dev;
1141 unsigned long diff = 0;
1143 BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / 8);
1148 if (if_old->device_config != if_new->device_config)
1151 if (!if_new->device_config)
1154 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb,
1155 blob_data(if_old->config), blob_len(if_old->config));
1157 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, ntb,
1158 blob_data(if_new->config), blob_len(if_new->config));
1160 uci_blob_diff(ntb, otb, &device_attr_list, &diff);
1165 interface_change_config(struct interface *if_old, struct interface *if_new)
1167 struct blob_attr *old_config = if_old->config;
1168 bool reload = false, reload_ip = false;
1170 #define FIELD_CHANGED_STR(field) \
1171 ((!!if_old->field != !!if_new->field) || \
1173 strcmp(if_old->field, if_new->field) != 0))
1175 if (FIELD_CHANGED_STR(parent_ifname)) {
1176 if (if_old->parent_iface.iface)
1177 interface_remove_user(&if_old->parent_iface);
1181 if (!reload && interface_device_config_changed(if_old, if_new))
1184 if (FIELD_CHANGED_STR(ifname) ||
1185 if_old->proto_handler != if_new->proto_handler)
1188 if (!if_old->proto_handler->config_params)
1189 D(INTERFACE, "No config parameters for interface '%s'\n",
1191 else if (!uci_blob_check_equal(if_old->config, if_new->config,
1192 if_old->proto_handler->config_params))
1195 #define UPDATE(field, __var) ({ \
1196 bool __changed = (if_old->field != if_new->field); \
1197 if_old->field = if_new->field; \
1198 __var |= __changed; \
1201 if_old->config = if_new->config;
1202 if (if_old->config_autostart != if_new->config_autostart) {
1203 if (if_old->config_autostart)
1206 if_old->autostart = if_new->config_autostart;
1209 if_old->device_config = if_new->device_config;
1210 if_old->config_autostart = if_new->config_autostart;
1211 if_old->ifname = if_new->ifname;
1212 if_old->parent_ifname = if_new->parent_ifname;
1213 if_old->proto_handler = if_new->proto_handler;
1214 if_old->force_link = if_new->force_link;
1215 if_old->dns_metric = if_new->dns_metric;
1217 if_old->proto_ip.no_dns = if_new->proto_ip.no_dns;
1218 interface_replace_dns(&if_old->config_ip, &if_new->config_ip);
1220 UPDATE(metric, reload_ip);
1221 UPDATE(proto_ip.no_defaultroute, reload_ip);
1222 UPDATE(ip4table, reload_ip);
1223 UPDATE(ip6table, reload_ip);
1224 interface_merge_assignment_data(if_old, if_new);
1229 D(INTERFACE, "Reload interface '%s' because of config changes\n",
1231 interface_clear_errors(if_old);
1232 set_config_state(if_old, IFC_RELOAD);
1237 bool config_ip_enabled = if_old->config_ip.enabled;
1238 bool proto_ip_enabled = if_old->proto_ip.enabled;
1240 interface_ip_set_enabled(&if_old->config_ip, false);
1241 interface_ip_set_enabled(&if_old->proto_ip, false);
1242 interface_ip_set_enabled(&if_old->proto_ip, proto_ip_enabled);
1243 interface_ip_set_enabled(&if_old->config_ip, config_ip_enabled);
1246 interface_write_resolv_conf();
1247 if (if_old->main_dev.dev)
1248 interface_check_state(if_old);
1251 if_new->config = NULL;
1252 interface_cleanup(if_new);
1258 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
1259 struct vlist_node *node_old)
1261 struct interface *if_old = container_of(node_old, struct interface, node);
1262 struct interface *if_new = container_of(node_new, struct interface, node);
1264 if (node_old && node_new) {
1265 D(INTERFACE, "Update interface '%s'\n", if_new->name);
1266 interface_change_config(if_old, if_new);
1267 } else if (node_old) {
1268 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
1269 set_config_state(if_old, IFC_REMOVE);
1270 } else if (node_new) {
1271 D(INTERFACE, "Create interface '%s'\n", if_new->name);
1272 proto_init_interface(if_new, if_new->config);
1273 interface_claim_device(if_new);
1274 netifd_ubus_add_interface(if_new);
1280 interface_init_list(void)
1282 vlist_init(&interfaces, avl_strcmp, interface_update);
1283 interfaces.keep_old = true;
1284 interfaces.no_delete = true;