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,
52 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
53 [IFACE_ATTR_PROTO] = { .name = "proto", .type = BLOBMSG_TYPE_STRING },
54 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
55 [IFACE_ATTR_AUTO] = { .name = "auto", .type = BLOBMSG_TYPE_BOOL },
56 [IFACE_ATTR_DEFAULTROUTE] = { .name = "defaultroute", .type = BLOBMSG_TYPE_BOOL },
57 [IFACE_ATTR_PEERDNS] = { .name = "peerdns", .type = BLOBMSG_TYPE_BOOL },
58 [IFACE_ATTR_METRIC] = { .name = "metric", .type = BLOBMSG_TYPE_INT32 },
59 [IFACE_ATTR_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
60 [IFACE_ATTR_DNS_SEARCH] = { .name = "dns_search", .type = BLOBMSG_TYPE_ARRAY },
61 [IFACE_ATTR_DNS_METRIC] = { .name = "dns_metric", .type = BLOBMSG_TYPE_INT32 },
62 [IFACE_ATTR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
63 [IFACE_ATTR_IP6ASSIGN] = { .name = "ip6assign", .type = BLOBMSG_TYPE_INT32 },
64 [IFACE_ATTR_IP6HINT] = { .name = "ip6hint", .type = BLOBMSG_TYPE_STRING },
65 [IFACE_ATTR_IP4TABLE] = { .name = "ip4table", .type = BLOBMSG_TYPE_STRING },
66 [IFACE_ATTR_IP6TABLE] = { .name = "ip6table", .type = BLOBMSG_TYPE_STRING },
67 [IFACE_ATTR_IP6CLASS] = { .name = "ip6class", .type = BLOBMSG_TYPE_ARRAY },
68 [IFACE_ATTR_DELEGATE] = { .name = "delegate", .type = BLOBMSG_TYPE_BOOL },
69 [IFACE_ATTR_IP6IFACEID] = { .name = "ip6ifaceid", .type = BLOBMSG_TYPE_STRING },
70 [IFACE_ATTR_FORCE_LINK] = { .name = "force_link", .type = BLOBMSG_TYPE_BOOL },
73 const struct uci_blob_param_list interface_attr_list = {
74 .n_params = IFACE_ATTR_MAX,
75 .params = iface_attrs,
79 set_config_state(struct interface *iface, enum interface_config_state s);
81 interface_event(struct interface *iface, enum interface_event ev);
84 interface_error_flush(struct interface *iface)
86 struct interface_error *error, *tmp;
88 list_for_each_entry_safe(error, tmp, &iface->errors, list) {
89 list_del(&error->list);
95 interface_clear_errors(struct interface *iface)
97 /* don't flush the errors in case the configured protocol handler matches the
98 running protocol handler and is having the last error capability */
100 (iface->proto->handler->flags & PROTO_FLAG_LASTERROR) &&
101 (iface->proto->handler->name == iface->proto_handler->name)))
102 interface_error_flush(iface);
105 void interface_add_error(struct interface *iface, const char *subsystem,
106 const char *code, const char **data, int n_data)
108 struct interface_error *error;
111 char *dest, *d_subsys, *d_code;
113 /* if the configured protocol handler has the last error support capability,
114 errors should only be added if the running protocol handler matches the
117 (iface->proto->handler->flags & PROTO_FLAG_LASTERROR) &&
118 (iface->proto->handler->name != iface->proto_handler->name))
122 len = n_data * sizeof(char *);
123 datalen = alloca(len);
124 for (i = 0; i < n_data; i++) {
125 datalen[i] = strlen(data[i]) + 1;
130 error = calloc_a(sizeof(*error) + sizeof(char *) + len,
131 &d_subsys, subsystem ? strlen(subsystem) + 1 : 0,
132 &d_code, code ? strlen(code) + 1 : 0);
136 /* Only keep the last flagged error, prevent this list grows unlimitted in case the
137 protocol can't be established (e.g auth failure) */
138 if (iface->proto_handler->flags & PROTO_FLAG_LASTERROR)
139 interface_error_flush(iface);
141 list_add_tail(&error->list, &iface->errors);
143 dest = (char *) &error->data[n_data + 1];
144 for (i = 0; i < n_data; i++) {
145 error->data[i] = dest;
146 memcpy(dest, data[i], datalen[i]);
149 error->data[n_data] = NULL;
152 error->subsystem = strcpy(d_subsys, subsystem);
155 error->code = strcpy(d_code, code);
159 interface_data_del(struct interface *iface, struct interface_data *data)
161 avl_delete(&iface->data, &data->node);
166 interface_data_flush(struct interface *iface)
168 struct interface_data *d, *tmp;
170 avl_for_each_element_safe(&iface->data, d, node, tmp)
171 interface_data_del(iface, d);
175 interface_add_data(struct interface *iface, const struct blob_attr *data)
177 struct interface_data *n, *o;
179 if (!blobmsg_check_attr(data, true))
180 return UBUS_STATUS_INVALID_ARGUMENT;
182 const char *name = blobmsg_name(data);
183 unsigned len = blob_pad_len(data);
185 o = avl_find_element(&iface->data, name, o, node);
187 if (blob_pad_len(o->data) == len && !memcmp(o->data, data, len))
190 interface_data_del(iface, o);
193 n = calloc(1, sizeof(*n) + len);
195 return UBUS_STATUS_UNKNOWN_ERROR;
197 memcpy(n->data, data, len);
198 n->node.key = blobmsg_name(n->data);
199 avl_insert(&iface->data, &n->node);
201 iface->updated |= IUF_DATA;
205 int interface_parse_data(struct interface *iface, const struct blob_attr *attr)
207 struct blob_attr *cur;
212 blob_for_each_attr(cur, attr, rem) {
213 ret = interface_add_data(iface, cur);
218 if (iface->updated && iface->state == IFS_UP)
219 interface_event(iface, IFEV_UPDATE);
225 interface_event(struct interface *iface, enum interface_event ev)
227 struct interface_user *dep, *tmp;
228 struct device *adev = NULL;
230 list_for_each_entry_safe(dep, tmp, &iface->users, list)
231 dep->cb(dep, iface, ev);
233 list_for_each_entry_safe(dep, tmp, &iface_all_users, list)
234 dep->cb(dep, iface, ev);
238 interface_error_flush(iface);
239 adev = iface->l3_dev.dev;
242 alias_notify_device(iface->name, adev);
250 interface_flush_state(struct interface *iface)
252 if (iface->l3_dev.dev)
253 device_release(&iface->l3_dev);
254 interface_data_flush(iface);
258 mark_interface_down(struct interface *iface)
260 enum interface_state state = iface->state;
262 if (state == IFS_DOWN)
265 iface->link_up_event = false;
266 iface->state = IFS_DOWN;
268 interface_event(iface, IFEV_DOWN);
269 interface_ip_set_enabled(&iface->config_ip, false);
270 interface_ip_set_enabled(&iface->proto_ip, false);
271 interface_ip_flush(&iface->proto_ip);
272 interface_flush_state(iface);
273 system_flush_routes();
277 __interface_set_down(struct interface *iface, bool force)
279 enum interface_state state = iface->state;
283 iface->state = IFS_TEARDOWN;
285 interface_event(iface, IFEV_DOWN);
287 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
289 interface_flush_state(iface);
293 if (iface->main_dev.dev)
294 device_release(&iface->main_dev);
302 __interface_set_up(struct interface *iface)
306 netifd_log_message(L_NOTICE, "Interface '%s' is setting up now\n", iface->name);
308 iface->state = IFS_SETUP;
309 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
311 mark_interface_down(iface);
317 interface_check_state(struct interface *iface)
319 bool link_state = iface->link_state || iface->force_link;
321 switch (iface->state) {
324 if (!iface->enabled || !link_state) {
325 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
326 mark_interface_down(iface);
330 if (!iface->available)
333 if (iface->autostart && iface->enabled && link_state && !config_init)
334 __interface_set_up(iface);
342 interface_set_enabled(struct interface *iface, bool new_state)
344 if (iface->enabled == new_state)
347 netifd_log_message(L_NOTICE, "Interface '%s' is %s\n", iface->name, new_state ? "enabled" : "disabled");
348 iface->enabled = new_state;
349 interface_check_state(iface);
353 interface_set_link_state(struct interface *iface, bool new_state)
355 if (iface->link_state == new_state)
358 netifd_log_message(L_NOTICE, "Interface '%s' has link connectivity %s\n", iface->name, new_state ? "" : "loss");
359 iface->link_state = new_state;
360 interface_check_state(iface);
362 if (new_state && iface->force_link && iface->state == IFS_UP && !iface->link_up_event) {
363 interface_event(iface, IFEV_LINK_UP);
364 iface->link_up_event = true;
369 interface_ext_dev_cb(struct device_user *dep, enum device_event ev)
371 if (ev == DEV_EVENT_REMOVE)
372 device_remove_user(dep);
376 interface_main_dev_cb(struct device_user *dep, enum device_event ev)
378 struct interface *iface;
379 bool new_state = false;
381 iface = container_of(dep, struct interface, main_dev);
385 case DEV_EVENT_REMOVE:
386 interface_set_available(iface, new_state);
387 if (!new_state && dep->dev && dep->dev->external)
388 interface_set_main_dev(iface, NULL);
393 interface_set_enabled(iface, new_state);
395 case DEV_EVENT_LINK_UP:
397 case DEV_EVENT_LINK_DOWN:
398 interface_set_link_state(iface, new_state);
400 case DEV_EVENT_TOPO_CHANGE:
401 interface_proto_event(iface->proto, PROTO_CMD_RENEW, false);
409 interface_l3_dev_cb(struct device_user *dep, enum device_event ev)
411 struct interface *iface;
413 iface = container_of(dep, struct interface, l3_dev);
414 if (iface->l3_dev.dev == iface->main_dev.dev)
418 case DEV_EVENT_LINK_DOWN:
419 if (iface->proto_handler->flags & PROTO_FLAG_TEARDOWN_ON_L3_LINK_DOWN)
420 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
428 interface_set_available(struct interface *iface, bool new_state)
430 if (iface->available == new_state)
433 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
434 iface->available = new_state;
437 if (iface->autostart && !config_init)
438 interface_set_up(iface);
440 __interface_set_down(iface, true);
444 interface_add_user(struct interface_user *dep, struct interface *iface)
447 list_add(&dep->list, &iface_all_users);
452 list_add(&dep->list, &iface->users);
453 if (iface->state == IFS_UP)
454 dep->cb(dep, iface, IFEV_UP);
458 interface_remove_user(struct interface_user *dep)
460 list_del_init(&dep->list);
465 interface_add_assignment_classes(struct interface *iface, struct blob_attr *list)
467 struct blob_attr *cur;
470 blobmsg_for_each_attr(cur, list, rem) {
471 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
474 if (!blobmsg_check_attr(cur, NULL))
477 struct interface_assignment_class *c = malloc(sizeof(*c) + blobmsg_data_len(cur));
478 memcpy(c->name, blobmsg_data(cur), blobmsg_data_len(cur));
479 list_add(&c->head, &iface->assignment_classes);
484 interface_clear_assignment_classes(struct interface *iface)
486 while (!list_empty(&iface->assignment_classes)) {
487 struct interface_assignment_class *c = list_first_entry(&iface->assignment_classes,
488 struct interface_assignment_class, head);
495 interface_merge_assignment_data(struct interface *old, struct interface *new)
497 bool changed = (old->assignment_hint != new->assignment_hint ||
498 old->assignment_length != new->assignment_length ||
499 old->assignment_iface_id_selection != new->assignment_iface_id_selection ||
500 (old->assignment_iface_id_selection == IFID_FIXED &&
501 memcmp(&old->assignment_fixed_iface_id, &new->assignment_fixed_iface_id,
502 sizeof(old->assignment_fixed_iface_id))) ||
503 list_empty(&old->assignment_classes) != list_empty(&new->assignment_classes));
505 struct interface_assignment_class *c;
506 list_for_each_entry(c, &new->assignment_classes, head) {
507 // Compare list entries one-by-one to see if there was a change
508 if (list_empty(&old->assignment_classes)) // The new list is longer
514 struct interface_assignment_class *c_old = list_first_entry(&old->assignment_classes,
515 struct interface_assignment_class, head);
517 if (strcmp(c_old->name, c->name)) // An entry didn't match
520 list_del(&c_old->head);
524 // The old list was longer than the new one or the last entry didn't match
525 if (!list_empty(&old->assignment_classes)) {
526 interface_clear_assignment_classes(old);
530 list_splice_init(&new->assignment_classes, &old->assignment_classes);
533 old->assignment_hint = new->assignment_hint;
534 old->assignment_length = new->assignment_length;
535 old->assignment_iface_id_selection = new->assignment_iface_id_selection;
536 old->assignment_fixed_iface_id = new->assignment_fixed_iface_id;
537 interface_refresh_assignments(true);
542 interface_alias_cb(struct interface_user *dep, struct interface *iface, enum interface_event ev)
544 struct interface *alias = container_of(dep, struct interface, parent_iface);
545 struct device *dev = iface->l3_dev.dev;
552 interface_set_main_dev(alias, dev);
553 interface_set_available(alias, true);
556 interface_set_available(alias, false);
557 interface_set_main_dev(alias, NULL);
560 interface_remove_user(dep);
568 interface_set_device_config(struct interface *iface, struct device *dev)
570 if (!dev || !dev->default_config)
573 if (!iface->device_config &&
574 (!dev->iface_config || dev->config_iface != iface))
577 dev->config_iface = iface;
578 dev->iface_config = iface->device_config;
579 device_apply_config(dev, dev->type, iface->config);
583 interface_claim_device(struct interface *iface)
585 struct interface *parent;
586 struct device *dev = NULL;
588 if (iface->parent_iface.iface)
589 interface_remove_user(&iface->parent_iface);
593 if (iface->parent_ifname) {
594 parent = vlist_find(&interfaces, iface->parent_ifname, parent, node);
595 iface->parent_iface.cb = interface_alias_cb;
596 interface_add_user(&iface->parent_iface, parent);
597 } else if (iface->ifname &&
598 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
599 dev = device_get(iface->ifname, true);
600 interface_set_device_config(iface, dev);
602 dev = iface->ext_dev.dev;
606 interface_set_main_dev(iface, dev);
610 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
611 interface_set_available(iface, true);
615 interface_cleanup_state(struct interface *iface)
617 interface_set_available(iface, false);
619 interface_flush_state(iface);
620 interface_clear_errors(iface);
621 interface_set_proto_state(iface, NULL);
623 interface_set_main_dev(iface, NULL);
624 interface_set_l3_dev(iface, NULL);
628 interface_cleanup(struct interface *iface)
630 struct interface_user *dep, *tmp;
632 uloop_timeout_cancel(&iface->remove_timer);
633 device_remove_user(&iface->ext_dev);
635 if (iface->parent_iface.iface)
636 interface_remove_user(&iface->parent_iface);
638 list_for_each_entry_safe(dep, tmp, &iface->users, list)
639 interface_remove_user(dep);
641 interface_clear_assignment_classes(iface);
642 interface_ip_flush(&iface->config_ip);
643 interface_cleanup_state(iface);
647 interface_do_free(struct interface *iface)
649 interface_event(iface, IFEV_FREE);
650 interface_cleanup(iface);
652 netifd_ubus_remove_interface(iface);
653 avl_delete(&interfaces.avl, &iface->node.avl);
658 interface_do_reload(struct interface *iface)
660 interface_event(iface, IFEV_RELOAD);
661 interface_cleanup_state(iface);
662 proto_init_interface(iface, iface->config);
663 interface_claim_device(iface);
667 interface_handle_config_change(struct interface *iface)
669 enum interface_config_state state = iface->config_state;
671 iface->config_state = IFC_NORMAL;
676 interface_do_reload(iface);
679 interface_do_free(iface);
682 if (iface->autostart && iface->available)
683 interface_set_up(iface);
684 else if (iface->dynamic)
685 set_config_state(iface, IFC_REMOVE);
689 interface_proto_event_cb(struct interface_proto_state *state, enum interface_proto_event ev)
691 struct interface *iface = state->iface;
695 if (iface->state != IFS_SETUP) {
696 if (iface->state == IFS_UP && iface->updated)
697 interface_event(iface, IFEV_UPDATE);
701 if (!iface->l3_dev.dev)
702 interface_set_l3_dev(iface, iface->main_dev.dev);
704 interface_ip_set_enabled(&iface->config_ip, true);
705 interface_ip_set_enabled(&iface->proto_ip, true);
706 system_flush_routes();
707 iface->state = IFS_UP;
708 iface->start_time = system_get_rtime();
709 interface_event(iface, IFEV_UP);
710 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
713 if (iface->state == IFS_DOWN)
716 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
717 mark_interface_down(iface);
718 if (iface->main_dev.dev)
719 device_release(&iface->main_dev);
720 if (iface->l3_dev.dev)
721 device_remove_user(&iface->l3_dev);
722 interface_handle_config_change(iface);
724 case IFPEV_LINK_LOST:
725 if (iface->state != IFS_UP)
728 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
729 mark_interface_down(iface);
730 iface->state = IFS_SETUP;
736 interface_write_resolv_conf();
739 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
742 iface->proto->free(iface->proto);
745 iface->state = IFS_DOWN;
746 iface->proto = state;
750 state->proto_event = interface_proto_event_cb;
751 state->iface = iface;
755 interface_alloc(const char *name, struct blob_attr *config)
757 struct interface *iface;
758 struct blob_attr *tb[IFACE_ATTR_MAX];
759 struct blob_attr *cur;
760 const char *proto_name = NULL;
762 bool force_link = false;
764 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
765 iface->name = strcpy(iface_name, name);
766 INIT_LIST_HEAD(&iface->errors);
767 INIT_LIST_HEAD(&iface->users);
768 INIT_LIST_HEAD(&iface->hotplug_list);
769 INIT_LIST_HEAD(&iface->assignment_classes);
770 interface_ip_init(iface);
771 avl_init(&iface->data, avl_strcmp, false, NULL);
772 iface->config_ip.enabled = false;
774 iface->main_dev.cb = interface_main_dev_cb;
775 iface->l3_dev.cb = interface_l3_dev_cb;
776 iface->ext_dev.cb = interface_ext_dev_cb;
778 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
779 blob_data(config), blob_len(config));
781 if ((cur = tb[IFACE_ATTR_PROTO]))
782 proto_name = blobmsg_data(cur);
784 proto_attach_interface(iface, proto_name);
785 if (iface->proto_handler->flags & PROTO_FLAG_FORCE_LINK_DEFAULT)
788 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
789 iface->force_link = blobmsg_get_bool_default(tb[IFACE_ATTR_FORCE_LINK], force_link);
790 iface->proto_ip.no_defaultroute =
791 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
792 iface->proto_ip.no_dns =
793 !blobmsg_get_bool_default(tb[IFACE_ATTR_PEERDNS], true);
795 if ((cur = tb[IFACE_ATTR_DNS]))
796 interface_add_dns_server_list(&iface->config_ip, cur);
798 if ((cur = tb[IFACE_ATTR_DNS_SEARCH]))
799 interface_add_dns_search_list(&iface->config_ip, cur);
801 if ((cur = tb[IFACE_ATTR_DNS_METRIC]))
802 iface->dns_metric = blobmsg_get_u32(cur);
804 if ((cur = tb[IFACE_ATTR_METRIC]))
805 iface->metric = blobmsg_get_u32(cur);
807 if ((cur = tb[IFACE_ATTR_IP6ASSIGN]))
808 iface->assignment_length = blobmsg_get_u32(cur);
811 iface->assignment_iface_id_selection = IFID_FIXED;
812 iface->assignment_fixed_iface_id = in6addr_any;
813 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
815 if ((cur = tb[IFACE_ATTR_IP6IFACEID])) {
816 const char *ifaceid = blobmsg_data(cur);
817 if (!strcmp(ifaceid, "random")) {
818 iface->assignment_iface_id_selection = IFID_RANDOM;
820 else if (!strcmp(ifaceid, "eui64")) {
821 iface->assignment_iface_id_selection = IFID_EUI64;
824 /* we expect an IPv6 address with network id zero here -> fixed iface id
825 if we cannot parse -> revert to iface id 1 */
826 if (inet_pton(AF_INET6,ifaceid,&iface->assignment_fixed_iface_id) != 1 ||
827 iface->assignment_fixed_iface_id.s6_addr32[0] != 0 ||
828 iface->assignment_fixed_iface_id.s6_addr32[1] != 0) {
829 iface->assignment_fixed_iface_id = in6addr_any;
830 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
831 netifd_log_message(L_WARNING, "Failed to parse ip6ifaceid for interface '%s', \
832 falling back to iface id 1.\n", iface->name);
837 iface->assignment_hint = -1;
838 if ((cur = tb[IFACE_ATTR_IP6HINT]))
839 iface->assignment_hint = strtol(blobmsg_get_string(cur), NULL, 16) &
840 ~((1 << (64 - iface->assignment_length)) - 1);
842 if ((cur = tb[IFACE_ATTR_IP6CLASS]))
843 interface_add_assignment_classes(iface, cur);
846 if ((cur = tb[IFACE_ATTR_IP4TABLE])) {
847 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip4table))
848 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
851 if ((cur = tb[IFACE_ATTR_IP6TABLE])) {
852 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip6table))
853 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
856 iface->proto_ip.no_delegation = !blobmsg_get_bool_default(tb[IFACE_ATTR_DELEGATE], true);
858 iface->config_autostart = iface->autostart;
862 void interface_set_dynamic(struct interface *iface)
864 iface->dynamic = true;
865 iface->autostart = true;
866 iface->node.version = -1; // Don't delete on reload
869 static bool __interface_add(struct interface *iface, struct blob_attr *config, bool alias)
871 struct blob_attr *tb[IFACE_ATTR_MAX];
872 struct blob_attr *cur;
874 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
875 blob_data(config), blob_len(config));
878 if ((cur = tb[IFACE_ATTR_INTERFACE]))
879 iface->parent_ifname = blobmsg_data(cur);
881 if (!iface->parent_ifname)
884 if ((cur = tb[IFACE_ATTR_IFNAME]))
885 iface->ifname = blobmsg_data(cur);
888 iface->config = config;
889 vlist_add(&interfaces, &iface->node, iface->name);
894 interface_add(struct interface *iface, struct blob_attr *config)
896 __interface_add(iface, config, false);
900 interface_add_alias(struct interface *iface, struct blob_attr *config)
902 if (iface->proto_handler->flags & PROTO_FLAG_NODEV)
905 return __interface_add(iface, config, true);
909 interface_set_l3_dev(struct interface *iface, struct device *dev)
911 bool enabled = iface->config_ip.enabled;
912 bool claimed = iface->l3_dev.claimed;
914 if (iface->l3_dev.dev == dev)
917 interface_ip_set_enabled(&iface->config_ip, false);
918 interface_ip_set_enabled(&iface->proto_ip, false);
919 interface_ip_flush(&iface->proto_ip);
920 device_add_user(&iface->l3_dev, dev);
924 if (device_claim(&iface->l3_dev) < 0)
927 interface_ip_set_enabled(&iface->config_ip, enabled);
928 interface_ip_set_enabled(&iface->proto_ip, enabled);
933 interface_set_main_dev(struct interface *iface, struct device *dev)
935 bool claimed = iface->l3_dev.claimed;
937 if (iface->main_dev.dev == dev)
940 interface_set_available(iface, false);
941 device_add_user(&iface->main_dev, dev);
943 interface_set_link_state(iface, false);
948 if (device_claim(&iface->l3_dev) < 0)
952 if (!iface->l3_dev.dev)
953 interface_set_l3_dev(iface, dev);
957 interface_remove_link(struct interface *iface, struct device *dev)
959 struct device *mdev = iface->main_dev.dev;
961 if (mdev && mdev->hotplug_ops)
962 return mdev->hotplug_ops->del(mdev, dev);
964 if (dev == iface->ext_dev.dev)
965 device_remove_user(&iface->ext_dev);
967 if (!iface->main_dev.hotplug)
968 return UBUS_STATUS_INVALID_ARGUMENT;
970 if (dev != iface->main_dev.dev)
971 return UBUS_STATUS_INVALID_ARGUMENT;
973 interface_set_main_dev(iface, NULL);
978 interface_add_link(struct interface *iface, struct device *dev, bool link_ext)
980 struct device *mdev = iface->main_dev.dev;
985 if (iface->main_dev.hotplug)
986 device_remove_user(&iface->main_dev);
989 if (mdev->hotplug_ops)
990 return mdev->hotplug_ops->add(mdev, dev);
992 return UBUS_STATUS_NOT_SUPPORTED;
996 device_add_user(&iface->ext_dev, dev);
998 interface_set_main_dev(iface, dev);
999 iface->main_dev.hotplug = true;
1004 interface_handle_link(struct interface *iface, const char *name, bool add, bool link_ext)
1011 dev = device_get(name, add ? (link_ext ? 2 : 1) : 0);
1013 ret = UBUS_STATUS_NOT_FOUND;
1018 interface_set_device_config(iface, dev);
1019 device_set_present(dev, true);
1021 ret = interface_add_link(iface, dev, link_ext);
1023 ret = interface_remove_link(iface, dev);
1033 interface_set_up(struct interface *iface)
1037 iface->autostart = true;
1039 if (iface->state != IFS_DOWN)
1042 interface_clear_errors(iface);
1043 if (!iface->available) {
1044 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
1048 if (iface->main_dev.dev) {
1049 ret = device_claim(&iface->main_dev);
1051 interface_check_state(iface);
1054 ret = __interface_set_up(iface);
1060 interface_set_down(struct interface *iface)
1063 vlist_for_each_element(&interfaces, iface, node)
1064 __interface_set_down(iface, false);
1066 iface->autostart = false;
1067 __interface_set_down(iface, false);
1074 interface_start_pending(void)
1076 struct interface *iface;
1078 vlist_for_each_element(&interfaces, iface, node) {
1079 if (iface->available && iface->autostart)
1080 interface_set_up(iface);
1085 set_config_state(struct interface *iface, enum interface_config_state s)
1087 iface->config_state = s;
1088 if (iface->state == IFS_DOWN)
1089 interface_handle_config_change(iface);
1091 __interface_set_down(iface, false);
1095 interface_update_start(struct interface *iface, const bool keep_old)
1100 interface_ip_update_start(&iface->proto_ip);
1104 interface_update_complete(struct interface *iface)
1106 interface_ip_update_complete(&iface->proto_ip);
1110 interface_replace_dns(struct interface_ip_settings *new, struct interface_ip_settings *old)
1112 vlist_simple_replace(&new->dns_servers, &old->dns_servers);
1113 vlist_simple_replace(&new->dns_search, &old->dns_search);
1117 interface_device_config_changed(struct interface *if_old, struct interface *if_new)
1119 struct blob_attr *ntb[__DEV_ATTR_MAX];
1120 struct blob_attr *otb[__DEV_ATTR_MAX];
1121 struct device *dev = if_old->main_dev.dev;
1122 unsigned long diff = 0;
1124 BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / 8);
1129 if (if_old->device_config != if_new->device_config)
1132 if (!if_new->device_config)
1135 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb,
1136 blob_data(if_old->config), blob_len(if_old->config));
1138 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, ntb,
1139 blob_data(if_new->config), blob_len(if_new->config));
1141 uci_blob_diff(ntb, otb, &device_attr_list, &diff);
1146 interface_change_config(struct interface *if_old, struct interface *if_new)
1148 struct blob_attr *old_config = if_old->config;
1149 bool reload = false, reload_ip = false;
1151 #define FIELD_CHANGED_STR(field) \
1152 ((!!if_old->field != !!if_new->field) || \
1154 strcmp(if_old->field, if_new->field) != 0))
1156 if (FIELD_CHANGED_STR(parent_ifname)) {
1157 if (if_old->parent_iface.iface)
1158 interface_remove_user(&if_old->parent_iface);
1162 if (!reload && interface_device_config_changed(if_old, if_new))
1165 if (FIELD_CHANGED_STR(ifname) ||
1166 if_old->proto_handler != if_new->proto_handler)
1169 if (!if_old->proto_handler->config_params)
1170 D(INTERFACE, "No config parameters for interface '%s'\n",
1172 else if (!uci_blob_check_equal(if_old->config, if_new->config,
1173 if_old->proto_handler->config_params))
1176 #define UPDATE(field, __var) ({ \
1177 bool __changed = (if_old->field != if_new->field); \
1178 if_old->field = if_new->field; \
1179 __var |= __changed; \
1182 if_old->config = if_new->config;
1183 if (if_old->config_autostart != if_new->config_autostart) {
1184 if (if_old->config_autostart)
1187 if_old->autostart = if_new->config_autostart;
1190 if_old->device_config = if_new->device_config;
1191 if_old->config_autostart = if_new->config_autostart;
1192 if_old->ifname = if_new->ifname;
1193 if_old->parent_ifname = if_new->parent_ifname;
1194 if_old->proto_handler = if_new->proto_handler;
1195 if_old->force_link = if_new->force_link;
1196 if_old->dns_metric = if_new->dns_metric;
1198 if_old->proto_ip.no_dns = if_new->proto_ip.no_dns;
1199 interface_replace_dns(&if_old->config_ip, &if_new->config_ip);
1201 UPDATE(metric, reload_ip);
1202 UPDATE(proto_ip.no_defaultroute, reload_ip);
1203 UPDATE(ip4table, reload_ip);
1204 UPDATE(ip6table, reload_ip);
1205 interface_merge_assignment_data(if_old, if_new);
1210 D(INTERFACE, "Reload interface '%s' because of config changes\n",
1212 interface_clear_errors(if_old);
1213 set_config_state(if_old, IFC_RELOAD);
1218 bool config_ip_enabled = if_old->config_ip.enabled;
1219 bool proto_ip_enabled = if_old->proto_ip.enabled;
1221 interface_ip_set_enabled(&if_old->config_ip, false);
1222 interface_ip_set_enabled(&if_old->proto_ip, false);
1223 interface_ip_set_enabled(&if_old->proto_ip, proto_ip_enabled);
1224 interface_ip_set_enabled(&if_old->config_ip, config_ip_enabled);
1227 interface_write_resolv_conf();
1228 if (if_old->main_dev.dev)
1229 interface_check_state(if_old);
1232 if_new->config = NULL;
1233 interface_cleanup(if_new);
1239 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
1240 struct vlist_node *node_old)
1242 struct interface *if_old = container_of(node_old, struct interface, node);
1243 struct interface *if_new = container_of(node_new, struct interface, node);
1245 if (node_old && node_new) {
1246 D(INTERFACE, "Update interface '%s'\n", if_new->name);
1247 interface_change_config(if_old, if_new);
1248 } else if (node_old) {
1249 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
1250 set_config_state(if_old, IFC_REMOVE);
1251 } else if (node_new) {
1252 D(INTERFACE, "Create interface '%s'\n", if_new->name);
1253 proto_init_interface(if_new, if_new->config);
1254 interface_claim_device(if_new);
1255 netifd_ubus_add_interface(if_new);
1261 interface_init_list(void)
1263 vlist_init(&interfaces, avl_strcmp, interface_update);
1264 interfaces.keep_old = true;
1265 interfaces.no_delete = true;