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 const struct uci_blob_param_list interface_attr_list = {
72 .n_params = IFACE_ATTR_MAX,
73 .params = iface_attrs,
77 set_config_state(struct interface *iface, enum interface_config_state s);
79 interface_event(struct interface *iface, enum interface_event ev);
82 interface_error_flush(struct interface *iface)
84 struct interface_error *error, *tmp;
86 list_for_each_entry_safe(error, tmp, &iface->errors, list) {
87 list_del(&error->list);
93 interface_clear_errors(struct interface *iface)
95 /* don't flush the errors in case the configured protocol handler matches the
96 running protocol handler and is having the last error capability */
98 (iface->proto->handler->flags & PROTO_FLAG_LASTERROR) &&
99 (iface->proto->handler->name == iface->proto_handler->name)))
100 interface_error_flush(iface);
103 void interface_add_error(struct interface *iface, const char *subsystem,
104 const char *code, const char **data, int n_data)
106 struct interface_error *error;
109 char *dest, *d_subsys, *d_code;
111 /* if the configured protocol handler has the last error support capability,
112 errors should only be added if the running protocol handler matches the
115 (iface->proto->handler->flags & PROTO_FLAG_LASTERROR) &&
116 (iface->proto->handler->name != iface->proto_handler->name))
120 len = n_data * sizeof(char *);
121 datalen = alloca(len);
122 for (i = 0; i < n_data; i++) {
123 datalen[i] = strlen(data[i]) + 1;
128 error = calloc_a(sizeof(*error) + sizeof(char *) + len,
129 &d_subsys, subsystem ? strlen(subsystem) + 1 : 0,
130 &d_code, code ? strlen(code) + 1 : 0);
134 /* Only keep the last flagged error, prevent this list grows unlimitted in case the
135 protocol can't be established (e.g auth failure) */
136 if (iface->proto_handler->flags & PROTO_FLAG_LASTERROR)
137 interface_error_flush(iface);
139 list_add_tail(&error->list, &iface->errors);
141 dest = (char *) &error->data[n_data + 1];
142 for (i = 0; i < n_data; i++) {
143 error->data[i] = dest;
144 memcpy(dest, data[i], datalen[i]);
147 error->data[n_data] = NULL;
150 error->subsystem = strcpy(d_subsys, subsystem);
153 error->code = strcpy(d_code, code);
157 interface_data_del(struct interface *iface, struct interface_data *data)
159 avl_delete(&iface->data, &data->node);
164 interface_data_flush(struct interface *iface)
166 struct interface_data *d, *tmp;
168 avl_for_each_element_safe(&iface->data, d, node, tmp)
169 interface_data_del(iface, d);
173 interface_add_data(struct interface *iface, const struct blob_attr *data)
175 struct interface_data *n, *o;
177 if (!blobmsg_check_attr(data, true))
178 return UBUS_STATUS_INVALID_ARGUMENT;
180 const char *name = blobmsg_name(data);
181 unsigned len = blob_pad_len(data);
183 o = avl_find_element(&iface->data, name, o, node);
185 if (blob_pad_len(o->data) == len && !memcmp(o->data, data, len))
188 interface_data_del(iface, o);
191 n = calloc(1, sizeof(*n) + len);
193 return UBUS_STATUS_UNKNOWN_ERROR;
195 memcpy(n->data, data, len);
196 n->node.key = blobmsg_name(n->data);
197 avl_insert(&iface->data, &n->node);
199 iface->updated |= IUF_DATA;
203 int interface_parse_data(struct interface *iface, const struct blob_attr *attr)
205 struct blob_attr *cur;
210 blob_for_each_attr(cur, attr, rem) {
211 ret = interface_add_data(iface, cur);
216 if (iface->updated && iface->state == IFS_UP)
217 interface_event(iface, IFEV_UPDATE);
223 interface_event(struct interface *iface, enum interface_event ev)
225 struct interface_user *dep, *tmp;
226 struct device *adev = NULL;
228 list_for_each_entry_safe(dep, tmp, &iface->users, list)
229 dep->cb(dep, iface, ev);
231 list_for_each_entry_safe(dep, tmp, &iface_all_users, list)
232 dep->cb(dep, iface, ev);
236 interface_error_flush(iface);
237 adev = iface->l3_dev.dev;
240 alias_notify_device(iface->name, adev);
248 interface_flush_state(struct interface *iface)
250 if (iface->l3_dev.dev)
251 device_release(&iface->l3_dev);
252 interface_data_flush(iface);
256 mark_interface_down(struct interface *iface)
258 enum interface_state state = iface->state;
260 if (state == IFS_DOWN)
263 iface->state = IFS_DOWN;
265 interface_event(iface, IFEV_DOWN);
266 interface_ip_set_enabled(&iface->config_ip, false);
267 interface_ip_set_enabled(&iface->proto_ip, false);
268 interface_ip_flush(&iface->proto_ip);
269 interface_flush_state(iface);
270 system_flush_routes();
274 __interface_set_down(struct interface *iface, bool force)
276 enum interface_state state = iface->state;
280 iface->state = IFS_TEARDOWN;
282 interface_event(iface, IFEV_DOWN);
284 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
286 interface_flush_state(iface);
290 if (iface->main_dev.dev)
291 device_release(&iface->main_dev);
299 __interface_set_up(struct interface *iface)
303 netifd_log_message(L_NOTICE, "Interface '%s' is setting up now\n", iface->name);
305 iface->state = IFS_SETUP;
306 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
308 mark_interface_down(iface);
314 interface_check_state(struct interface *iface)
316 bool link_state = iface->link_state || iface->force_link;
318 switch (iface->state) {
321 if (!iface->enabled || !link_state) {
322 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
323 mark_interface_down(iface);
327 if (!iface->available)
330 if (iface->autostart && iface->enabled && link_state && !config_init)
331 __interface_set_up(iface);
339 interface_set_enabled(struct interface *iface, bool new_state)
341 if (iface->enabled == new_state)
344 netifd_log_message(L_NOTICE, "Interface '%s' is %s\n", iface->name, new_state ? "enabled" : "disabled");
345 iface->enabled = new_state;
346 interface_check_state(iface);
350 interface_set_link_state(struct interface *iface, bool new_state)
352 if (iface->link_state == new_state)
355 netifd_log_message(L_NOTICE, "Interface '%s' has link connectivity %s\n", iface->name, new_state ? "" : "loss");
356 iface->link_state = new_state;
357 interface_check_state(iface);
361 interface_ext_dev_cb(struct device_user *dep, enum device_event ev)
363 if (ev == DEV_EVENT_REMOVE)
364 device_remove_user(dep);
368 interface_main_dev_cb(struct device_user *dep, enum device_event ev)
370 struct interface *iface;
371 bool new_state = false;
373 iface = container_of(dep, struct interface, main_dev);
377 case DEV_EVENT_REMOVE:
378 interface_set_available(iface, new_state);
379 if (!new_state && dep->dev && dep->dev->external)
380 interface_set_main_dev(iface, NULL);
385 interface_set_enabled(iface, new_state);
387 case DEV_EVENT_LINK_UP:
389 case DEV_EVENT_LINK_DOWN:
390 interface_set_link_state(iface, new_state);
392 case DEV_EVENT_TOPO_CHANGE:
393 interface_proto_event(iface->proto, PROTO_CMD_RENEW, false);
401 interface_l3_dev_cb(struct device_user *dep, enum device_event ev)
403 struct interface *iface;
405 iface = container_of(dep, struct interface, l3_dev);
406 if (iface->l3_dev.dev == iface->main_dev.dev)
410 case DEV_EVENT_LINK_DOWN:
411 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
419 interface_set_available(struct interface *iface, bool new_state)
421 if (iface->available == new_state)
424 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
425 iface->available = new_state;
428 if (iface->autostart && !config_init)
429 interface_set_up(iface);
431 __interface_set_down(iface, true);
435 interface_add_user(struct interface_user *dep, struct interface *iface)
438 list_add(&dep->list, &iface_all_users);
443 list_add(&dep->list, &iface->users);
444 if (iface->state == IFS_UP)
445 dep->cb(dep, iface, IFEV_UP);
449 interface_remove_user(struct interface_user *dep)
451 list_del_init(&dep->list);
456 interface_add_assignment_classes(struct interface *iface, struct blob_attr *list)
458 struct blob_attr *cur;
461 blobmsg_for_each_attr(cur, list, rem) {
462 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
465 if (!blobmsg_check_attr(cur, NULL))
468 struct interface_assignment_class *c = malloc(sizeof(*c) + blobmsg_data_len(cur));
469 memcpy(c->name, blobmsg_data(cur), blobmsg_data_len(cur));
470 list_add(&c->head, &iface->assignment_classes);
475 interface_clear_assignment_classes(struct interface *iface)
477 while (!list_empty(&iface->assignment_classes)) {
478 struct interface_assignment_class *c = list_first_entry(&iface->assignment_classes,
479 struct interface_assignment_class, head);
486 interface_merge_assignment_data(struct interface *old, struct interface *new)
488 bool changed = (old->assignment_hint != new->assignment_hint ||
489 old->assignment_length != new->assignment_length ||
490 old->assignment_iface_id_selection != new->assignment_iface_id_selection ||
491 (old->assignment_iface_id_selection == IFID_FIXED &&
492 memcmp(&old->assignment_fixed_iface_id, &new->assignment_fixed_iface_id,
493 sizeof(old->assignment_fixed_iface_id))) ||
494 list_empty(&old->assignment_classes) != list_empty(&new->assignment_classes));
496 struct interface_assignment_class *c;
497 list_for_each_entry(c, &new->assignment_classes, head) {
498 // Compare list entries one-by-one to see if there was a change
499 if (list_empty(&old->assignment_classes)) // The new list is longer
505 struct interface_assignment_class *c_old = list_first_entry(&old->assignment_classes,
506 struct interface_assignment_class, head);
508 if (strcmp(c_old->name, c->name)) // An entry didn't match
511 list_del(&c_old->head);
515 // The old list was longer than the new one or the last entry didn't match
516 if (!list_empty(&old->assignment_classes)) {
517 interface_clear_assignment_classes(old);
521 list_splice_init(&new->assignment_classes, &old->assignment_classes);
524 old->assignment_hint = new->assignment_hint;
525 old->assignment_length = new->assignment_length;
526 old->assignment_iface_id_selection = new->assignment_iface_id_selection;
527 old->assignment_fixed_iface_id = new->assignment_fixed_iface_id;
528 interface_refresh_assignments(true);
533 interface_alias_cb(struct interface_user *dep, struct interface *iface, enum interface_event ev)
535 struct interface *alias = container_of(dep, struct interface, parent_iface);
536 struct device *dev = iface->l3_dev.dev;
543 interface_set_main_dev(alias, dev);
544 interface_set_available(alias, true);
547 interface_set_available(alias, false);
548 interface_set_main_dev(alias, NULL);
551 interface_remove_user(dep);
560 interface_set_device_config(struct interface *iface, struct device *dev)
562 if (!dev || !dev->default_config)
565 if (!iface->device_config &&
566 (!dev->iface_config || dev->config_iface != iface))
569 dev->config_iface = iface;
570 dev->iface_config = iface->device_config;
571 device_apply_config(dev, dev->type, iface->config);
575 interface_claim_device(struct interface *iface)
577 struct interface *parent;
578 struct device *dev = NULL;
580 if (iface->parent_iface.iface)
581 interface_remove_user(&iface->parent_iface);
583 if (iface->parent_ifname) {
584 parent = vlist_find(&interfaces, iface->parent_ifname, parent, node);
585 iface->parent_iface.cb = interface_alias_cb;
586 interface_add_user(&iface->parent_iface, parent);
587 } else if (iface->ifname &&
588 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
589 dev = device_get(iface->ifname, true);
590 interface_set_device_config(iface, dev);
592 dev = iface->ext_dev.dev;
596 interface_set_main_dev(iface, dev);
598 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
599 interface_set_available(iface, true);
603 interface_cleanup_state(struct interface *iface)
605 interface_set_available(iface, false);
607 interface_flush_state(iface);
608 interface_clear_errors(iface);
609 interface_set_proto_state(iface, NULL);
611 interface_set_main_dev(iface, NULL);
612 interface_set_l3_dev(iface, NULL);
616 interface_cleanup(struct interface *iface)
618 struct interface_user *dep, *tmp;
620 uloop_timeout_cancel(&iface->remove_timer);
621 device_remove_user(&iface->ext_dev);
623 if (iface->parent_iface.iface)
624 interface_remove_user(&iface->parent_iface);
626 list_for_each_entry_safe(dep, tmp, &iface->users, list)
627 interface_remove_user(dep);
629 interface_clear_assignment_classes(iface);
630 interface_ip_flush(&iface->config_ip);
631 interface_cleanup_state(iface);
635 interface_do_free(struct interface *iface)
637 interface_event(iface, IFEV_FREE);
638 interface_cleanup(iface);
640 netifd_ubus_remove_interface(iface);
641 avl_delete(&interfaces.avl, &iface->node.avl);
646 interface_do_reload(struct interface *iface)
648 interface_event(iface, IFEV_RELOAD);
649 interface_cleanup_state(iface);
650 proto_init_interface(iface, iface->config);
651 interface_claim_device(iface);
655 interface_handle_config_change(struct interface *iface)
657 enum interface_config_state state = iface->config_state;
659 iface->config_state = IFC_NORMAL;
664 interface_do_reload(iface);
667 interface_do_free(iface);
670 if (iface->autostart && iface->available)
671 interface_set_up(iface);
672 else if (iface->dynamic)
673 set_config_state(iface, IFC_REMOVE);
677 interface_proto_event_cb(struct interface_proto_state *state, enum interface_proto_event ev)
679 struct interface *iface = state->iface;
683 if (iface->state != IFS_SETUP) {
684 interface_event(iface, IFEV_UPDATE);
688 if (!iface->l3_dev.dev)
689 interface_set_l3_dev(iface, iface->main_dev.dev);
691 interface_ip_set_enabled(&iface->config_ip, true);
692 interface_ip_set_enabled(&iface->proto_ip, true);
693 system_flush_routes();
694 iface->state = IFS_UP;
695 iface->start_time = system_get_rtime();
696 interface_event(iface, IFEV_UP);
697 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
700 if (iface->state == IFS_DOWN)
703 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
704 mark_interface_down(iface);
705 if (iface->main_dev.dev)
706 device_release(&iface->main_dev);
707 if (iface->l3_dev.dev)
708 device_remove_user(&iface->l3_dev);
709 interface_handle_config_change(iface);
711 case IFPEV_LINK_LOST:
712 if (iface->state != IFS_UP)
715 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
716 mark_interface_down(iface);
717 iface->state = IFS_SETUP;
723 interface_write_resolv_conf();
726 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
729 iface->proto->free(iface->proto);
732 iface->state = IFS_DOWN;
733 iface->proto = state;
737 state->proto_event = interface_proto_event_cb;
738 state->iface = iface;
742 interface_alloc(const char *name, struct blob_attr *config)
744 struct interface *iface;
745 struct blob_attr *tb[IFACE_ATTR_MAX];
746 struct blob_attr *cur;
747 const char *proto_name = NULL;
749 bool force_link = false;
751 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
752 iface->name = strcpy(iface_name, name);
753 INIT_LIST_HEAD(&iface->errors);
754 INIT_LIST_HEAD(&iface->users);
755 INIT_LIST_HEAD(&iface->hotplug_list);
756 INIT_LIST_HEAD(&iface->assignment_classes);
757 interface_ip_init(iface);
758 avl_init(&iface->data, avl_strcmp, false, NULL);
759 iface->config_ip.enabled = false;
761 iface->main_dev.cb = interface_main_dev_cb;
762 iface->l3_dev.cb = interface_l3_dev_cb;
763 iface->ext_dev.cb = interface_ext_dev_cb;
765 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
766 blob_data(config), blob_len(config));
768 if ((cur = tb[IFACE_ATTR_PROTO]))
769 proto_name = blobmsg_data(cur);
771 proto_attach_interface(iface, proto_name);
772 if (iface->proto_handler->flags & PROTO_FLAG_FORCE_LINK_DEFAULT)
775 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
776 iface->force_link = blobmsg_get_bool_default(tb[IFACE_ATTR_FORCE_LINK], force_link);
777 iface->proto_ip.no_defaultroute =
778 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
779 iface->proto_ip.no_dns =
780 !blobmsg_get_bool_default(tb[IFACE_ATTR_PEERDNS], true);
782 if ((cur = tb[IFACE_ATTR_DNS]))
783 interface_add_dns_server_list(&iface->config_ip, cur);
785 if ((cur = tb[IFACE_ATTR_DNS_SEARCH]))
786 interface_add_dns_search_list(&iface->config_ip, cur);
788 if ((cur = tb[IFACE_ATTR_METRIC]))
789 iface->metric = blobmsg_get_u32(cur);
791 if ((cur = tb[IFACE_ATTR_IP6ASSIGN]))
792 iface->assignment_length = blobmsg_get_u32(cur);
795 iface->assignment_iface_id_selection = IFID_FIXED;
796 iface->assignment_fixed_iface_id = in6addr_any;
797 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
799 if ((cur = tb[IFACE_ATTR_IP6IFACEID])) {
800 const char *ifaceid = blobmsg_data(cur);
801 if (!strcmp(ifaceid, "random")) {
802 iface->assignment_iface_id_selection = IFID_RANDOM;
804 else if (!strcmp(ifaceid, "eui64")) {
805 iface->assignment_iface_id_selection = IFID_EUI64;
808 /* we expect an IPv6 address with network id zero here -> fixed iface id
809 if we cannot parse -> revert to iface id 1 */
810 if (inet_pton(AF_INET6,ifaceid,&iface->assignment_fixed_iface_id) != 1 ||
811 iface->assignment_fixed_iface_id.s6_addr32[0] != 0 ||
812 iface->assignment_fixed_iface_id.s6_addr32[1] != 0) {
813 iface->assignment_fixed_iface_id = in6addr_any;
814 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
815 netifd_log_message(L_WARNING, "Failed to parse ip6ifaceid for interface '%s', \
816 falling back to iface id 1.\n", iface->name);
821 iface->assignment_hint = -1;
822 if ((cur = tb[IFACE_ATTR_IP6HINT]))
823 iface->assignment_hint = strtol(blobmsg_get_string(cur), NULL, 16) &
824 ~((1 << (64 - iface->assignment_length)) - 1);
826 if ((cur = tb[IFACE_ATTR_IP6CLASS]))
827 interface_add_assignment_classes(iface, cur);
830 if ((cur = tb[IFACE_ATTR_IP4TABLE])) {
831 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip4table))
832 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
835 if ((cur = tb[IFACE_ATTR_IP6TABLE])) {
836 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip6table))
837 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
840 iface->proto_ip.no_delegation = !blobmsg_get_bool_default(tb[IFACE_ATTR_DELEGATE], true);
842 iface->config_autostart = iface->autostart;
846 void interface_set_dynamic(struct interface *iface)
848 iface->dynamic = true;
849 iface->autostart = true;
850 iface->node.version = -1; // Don't delete on reload
853 static bool __interface_add(struct interface *iface, struct blob_attr *config, bool alias)
855 struct blob_attr *tb[IFACE_ATTR_MAX];
856 struct blob_attr *cur;
858 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
859 blob_data(config), blob_len(config));
862 if ((cur = tb[IFACE_ATTR_INTERFACE]))
863 iface->parent_ifname = blobmsg_data(cur);
865 if (!iface->parent_ifname)
868 if ((cur = tb[IFACE_ATTR_IFNAME]))
869 iface->ifname = blobmsg_data(cur);
872 iface->config = config;
873 vlist_add(&interfaces, &iface->node, iface->name);
878 interface_add(struct interface *iface, struct blob_attr *config)
880 __interface_add(iface, config, false);
884 interface_add_alias(struct interface *iface, struct blob_attr *config)
886 if (iface->proto_handler->flags & PROTO_FLAG_NODEV)
889 return __interface_add(iface, config, true);
893 interface_set_l3_dev(struct interface *iface, struct device *dev)
895 bool enabled = iface->config_ip.enabled;
896 bool claimed = iface->l3_dev.claimed;
898 if (iface->l3_dev.dev == dev)
901 interface_ip_set_enabled(&iface->config_ip, false);
902 interface_ip_set_enabled(&iface->proto_ip, false);
903 interface_ip_flush(&iface->proto_ip);
904 device_add_user(&iface->l3_dev, dev);
908 if (device_claim(&iface->l3_dev) < 0)
911 interface_ip_set_enabled(&iface->config_ip, enabled);
912 interface_ip_set_enabled(&iface->proto_ip, enabled);
917 interface_set_main_dev(struct interface *iface, struct device *dev)
919 bool claimed = iface->l3_dev.claimed;
921 if (iface->main_dev.dev == dev)
924 interface_set_available(iface, false);
925 device_add_user(&iface->main_dev, dev);
927 interface_set_link_state(iface, false);
932 if (device_claim(&iface->l3_dev) < 0)
936 if (!iface->l3_dev.dev)
937 interface_set_l3_dev(iface, dev);
941 interface_remove_link(struct interface *iface, struct device *dev)
943 struct device *mdev = iface->main_dev.dev;
945 if (mdev && mdev->hotplug_ops)
946 return mdev->hotplug_ops->del(mdev, dev);
948 if (dev == iface->ext_dev.dev)
949 device_remove_user(&iface->ext_dev);
951 if (!iface->main_dev.hotplug)
952 return UBUS_STATUS_INVALID_ARGUMENT;
954 if (dev != iface->main_dev.dev)
955 return UBUS_STATUS_INVALID_ARGUMENT;
957 interface_set_main_dev(iface, NULL);
962 interface_add_link(struct interface *iface, struct device *dev, bool link_ext)
964 struct device *mdev = iface->main_dev.dev;
969 if (iface->main_dev.hotplug)
970 device_remove_user(&iface->main_dev);
973 if (mdev->hotplug_ops)
974 return mdev->hotplug_ops->add(mdev, dev);
976 return UBUS_STATUS_NOT_SUPPORTED;
980 device_add_user(&iface->ext_dev, dev);
982 interface_set_main_dev(iface, dev);
983 iface->main_dev.hotplug = true;
988 interface_handle_link(struct interface *iface, const char *name, bool add, bool link_ext)
995 dev = device_get(name, add ? (link_ext ? 2 : 1) : 0);
997 ret = UBUS_STATUS_NOT_FOUND;
1002 interface_set_device_config(iface, dev);
1003 device_set_present(dev, true);
1005 ret = interface_add_link(iface, dev, link_ext);
1007 ret = interface_remove_link(iface, dev);
1017 interface_set_up(struct interface *iface)
1021 iface->autostart = true;
1023 if (iface->state != IFS_DOWN)
1026 interface_clear_errors(iface);
1027 if (!iface->available) {
1028 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
1032 if (iface->main_dev.dev) {
1033 ret = device_claim(&iface->main_dev);
1035 interface_check_state(iface);
1038 ret = __interface_set_up(iface);
1044 interface_set_down(struct interface *iface)
1047 vlist_for_each_element(&interfaces, iface, node)
1048 __interface_set_down(iface, false);
1050 iface->autostart = false;
1051 __interface_set_down(iface, false);
1058 interface_start_pending(void)
1060 struct interface *iface;
1062 vlist_for_each_element(&interfaces, iface, node) {
1063 if (iface->available && iface->autostart)
1064 interface_set_up(iface);
1069 set_config_state(struct interface *iface, enum interface_config_state s)
1071 iface->config_state = s;
1072 if (iface->state == IFS_DOWN)
1073 interface_handle_config_change(iface);
1075 __interface_set_down(iface, false);
1079 interface_update_start(struct interface *iface)
1082 interface_ip_update_start(&iface->proto_ip);
1086 interface_update_complete(struct interface *iface)
1088 interface_ip_update_complete(&iface->proto_ip);
1092 interface_replace_dns(struct interface_ip_settings *new, struct interface_ip_settings *old)
1094 vlist_simple_replace(&new->dns_servers, &old->dns_servers);
1095 vlist_simple_replace(&new->dns_search, &old->dns_search);
1099 interface_device_config_changed(struct interface *if_old, struct interface *if_new)
1101 struct blob_attr *ntb[__DEV_ATTR_MAX];
1102 struct blob_attr *otb[__DEV_ATTR_MAX];
1103 struct device *dev = if_old->main_dev.dev;
1104 unsigned long diff = 0;
1106 BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / 8);
1111 if (if_old->device_config != if_new->device_config)
1114 if (!if_new->device_config)
1117 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb,
1118 blob_data(if_old->config), blob_len(if_old->config));
1120 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, ntb,
1121 blob_data(if_new->config), blob_len(if_new->config));
1123 uci_blob_diff(ntb, otb, &device_attr_list, &diff);
1128 interface_change_config(struct interface *if_old, struct interface *if_new)
1130 struct blob_attr *old_config = if_old->config;
1131 bool reload = false, reload_ip = false;
1133 #define FIELD_CHANGED_STR(field) \
1134 ((!!if_old->field != !!if_new->field) || \
1136 strcmp(if_old->field, if_new->field) != 0))
1138 if (FIELD_CHANGED_STR(parent_ifname)) {
1139 if (if_old->parent_iface.iface)
1140 interface_remove_user(&if_old->parent_iface);
1144 if (!reload && interface_device_config_changed(if_old, if_new))
1147 if (FIELD_CHANGED_STR(ifname) ||
1148 if_old->proto_handler != if_new->proto_handler)
1151 if (!if_old->proto_handler->config_params)
1152 D(INTERFACE, "No config parameters for interface '%s'\n",
1154 else if (!uci_blob_check_equal(if_old->config, if_new->config,
1155 if_old->proto_handler->config_params))
1158 #define UPDATE(field, __var) ({ \
1159 bool __changed = (if_old->field != if_new->field); \
1160 if_old->field = if_new->field; \
1161 __var |= __changed; \
1164 if_old->config = if_new->config;
1165 if (if_old->config_autostart != if_new->config_autostart) {
1166 if (if_old->config_autostart)
1169 if_old->autostart = if_new->config_autostart;
1172 if_old->device_config = if_new->device_config;
1173 if_old->config_autostart = if_new->config_autostart;
1174 if_old->ifname = if_new->ifname;
1175 if_old->parent_ifname = if_new->parent_ifname;
1176 if_old->proto_handler = if_new->proto_handler;
1177 if_old->force_link = if_new->force_link;
1179 if_old->proto_ip.no_dns = if_new->proto_ip.no_dns;
1180 interface_replace_dns(&if_old->config_ip, &if_new->config_ip);
1182 UPDATE(metric, reload_ip);
1183 UPDATE(proto_ip.no_defaultroute, reload_ip);
1184 UPDATE(ip4table, reload_ip);
1185 UPDATE(ip6table, reload_ip);
1186 interface_merge_assignment_data(if_old, if_new);
1191 D(INTERFACE, "Reload interface '%s' because of config changes\n",
1193 interface_clear_errors(if_old);
1194 set_config_state(if_old, IFC_RELOAD);
1199 bool config_ip_enabled = if_old->config_ip.enabled;
1200 bool proto_ip_enabled = if_old->proto_ip.enabled;
1202 interface_ip_set_enabled(&if_old->config_ip, false);
1203 interface_ip_set_enabled(&if_old->proto_ip, false);
1204 interface_ip_set_enabled(&if_old->proto_ip, proto_ip_enabled);
1205 interface_ip_set_enabled(&if_old->config_ip, config_ip_enabled);
1208 interface_write_resolv_conf();
1209 if (if_old->main_dev.dev)
1210 interface_check_state(if_old);
1213 if_new->config = NULL;
1214 interface_cleanup(if_new);
1220 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
1221 struct vlist_node *node_old)
1223 struct interface *if_old = container_of(node_old, struct interface, node);
1224 struct interface *if_new = container_of(node_new, struct interface, node);
1226 if (node_old && node_new) {
1227 D(INTERFACE, "Update interface '%s'\n", if_new->name);
1228 interface_change_config(if_old, if_new);
1229 } else if (node_old) {
1230 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
1231 set_config_state(if_old, IFC_REMOVE);
1232 } else if (node_new) {
1233 D(INTERFACE, "Create interface '%s'\n", if_new->name);
1234 proto_init_interface(if_new, if_new->config);
1235 interface_claim_device(if_new);
1236 netifd_ubus_add_interface(if_new);
1242 interface_init_list(void)
1244 vlist_init(&interfaces, avl_strcmp, interface_update);
1245 interfaces.keep_old = true;
1246 interfaces.no_delete = true;