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;
273 interface_event(iface, IFEV_DOWN);
276 interface_event(iface, IFEV_UP_FAILED);
281 interface_ip_set_enabled(&iface->config_ip, false);
282 interface_ip_set_enabled(&iface->proto_ip, false);
283 interface_ip_flush(&iface->proto_ip);
284 interface_flush_state(iface);
285 system_flush_routes();
289 __set_config_state(struct interface *iface, enum interface_config_state s)
291 iface->config_state = s;
295 __interface_set_down(struct interface *iface, bool force)
297 enum interface_state state = iface->state;
301 iface->state = IFS_TEARDOWN;
303 __set_config_state(iface, IFC_REMOVE);
306 interface_event(iface, IFEV_DOWN);
308 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
310 interface_flush_state(iface);
314 if (iface->main_dev.dev)
315 device_release(&iface->main_dev);
323 __interface_set_up(struct interface *iface)
327 netifd_log_message(L_NOTICE, "Interface '%s' is setting up now\n", iface->name);
329 iface->state = IFS_SETUP;
330 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
332 mark_interface_down(iface);
338 interface_check_state(struct interface *iface)
340 bool link_state = iface->link_state || iface->force_link;
342 switch (iface->state) {
345 if (!iface->enabled || !link_state) {
346 iface->state = IFS_TEARDOWN;
348 __set_config_state(iface, IFC_REMOVE);
350 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
354 if (!iface->available)
357 if (iface->autostart && iface->enabled && link_state && !config_init)
358 __interface_set_up(iface);
366 interface_set_enabled(struct interface *iface, bool new_state)
368 if (iface->enabled == new_state)
371 netifd_log_message(L_NOTICE, "Interface '%s' is %s\n", iface->name, new_state ? "enabled" : "disabled");
372 iface->enabled = new_state;
373 interface_check_state(iface);
377 interface_set_link_state(struct interface *iface, bool new_state)
379 if (iface->link_state == new_state)
382 netifd_log_message(L_NOTICE, "Interface '%s' has link connectivity %s\n", iface->name, new_state ? "" : "loss");
383 iface->link_state = new_state;
384 interface_check_state(iface);
386 if (new_state && iface->force_link && iface->state == IFS_UP && !iface->link_up_event) {
387 interface_event(iface, IFEV_LINK_UP);
388 iface->link_up_event = true;
393 interface_ext_dev_cb(struct device_user *dep, enum device_event ev)
395 if (ev == DEV_EVENT_REMOVE)
396 device_remove_user(dep);
400 interface_main_dev_cb(struct device_user *dep, enum device_event ev)
402 struct interface *iface;
404 iface = container_of(dep, struct interface, main_dev);
407 interface_set_available(iface, true);
409 case DEV_EVENT_REMOVE:
410 interface_set_available(iface, false);
411 if (dep->dev && dep->dev->external)
412 interface_set_main_dev(iface, NULL);
415 interface_set_enabled(iface, true);
418 interface_set_enabled(iface, false);
420 case DEV_EVENT_LINK_UP:
421 interface_set_link_state(iface, true);
423 case DEV_EVENT_LINK_DOWN:
424 interface_set_link_state(iface, false);
426 case DEV_EVENT_TOPO_CHANGE:
427 interface_proto_event(iface->proto, PROTO_CMD_RENEW, false);
435 interface_l3_dev_cb(struct device_user *dep, enum device_event ev)
437 struct interface *iface;
439 iface = container_of(dep, struct interface, l3_dev);
440 if (iface->l3_dev.dev == iface->main_dev.dev)
444 case DEV_EVENT_LINK_DOWN:
445 if (iface->proto_handler->flags & PROTO_FLAG_TEARDOWN_ON_L3_LINK_DOWN)
446 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
454 interface_set_available(struct interface *iface, bool new_state)
456 if (iface->available == new_state)
459 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
460 iface->available = new_state;
463 if (iface->autostart && !config_init)
464 interface_set_up(iface);
466 __interface_set_down(iface, true);
470 interface_add_user(struct interface_user *dep, struct interface *iface)
473 list_add(&dep->list, &iface_all_users);
478 list_add(&dep->list, &iface->users);
479 if (iface->state == IFS_UP)
480 dep->cb(dep, iface, IFEV_UP);
484 interface_remove_user(struct interface_user *dep)
486 list_del_init(&dep->list);
491 interface_add_assignment_classes(struct interface *iface, struct blob_attr *list)
493 struct blob_attr *cur;
496 blobmsg_for_each_attr(cur, list, rem) {
497 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
500 if (!blobmsg_check_attr(cur, false))
503 struct interface_assignment_class *c = malloc(sizeof(*c) + blobmsg_data_len(cur));
504 memcpy(c->name, blobmsg_data(cur), blobmsg_data_len(cur));
505 list_add(&c->head, &iface->assignment_classes);
510 interface_clear_assignment_classes(struct interface *iface)
512 while (!list_empty(&iface->assignment_classes)) {
513 struct interface_assignment_class *c = list_first_entry(&iface->assignment_classes,
514 struct interface_assignment_class, head);
521 interface_merge_assignment_data(struct interface *old, struct interface *new)
523 bool changed = (old->assignment_hint != new->assignment_hint ||
524 old->assignment_length != new->assignment_length ||
525 old->assignment_iface_id_selection != new->assignment_iface_id_selection ||
526 old->assignment_weight != new->assignment_weight ||
527 (old->assignment_iface_id_selection == IFID_FIXED &&
528 memcmp(&old->assignment_fixed_iface_id, &new->assignment_fixed_iface_id,
529 sizeof(old->assignment_fixed_iface_id))) ||
530 list_empty(&old->assignment_classes) != list_empty(&new->assignment_classes));
532 struct interface_assignment_class *c;
533 list_for_each_entry(c, &new->assignment_classes, head) {
534 /* Compare list entries one-by-one to see if there was a change */
535 if (list_empty(&old->assignment_classes)) /* The new list is longer */
541 struct interface_assignment_class *c_old = list_first_entry(&old->assignment_classes,
542 struct interface_assignment_class, head);
544 if (strcmp(c_old->name, c->name)) /* An entry didn't match */
547 list_del(&c_old->head);
551 /* The old list was longer than the new one or the last entry didn't match */
552 if (!list_empty(&old->assignment_classes)) {
553 interface_clear_assignment_classes(old);
557 list_splice_init(&new->assignment_classes, &old->assignment_classes);
560 old->assignment_hint = new->assignment_hint;
561 old->assignment_length = new->assignment_length;
562 old->assignment_iface_id_selection = new->assignment_iface_id_selection;
563 old->assignment_fixed_iface_id = new->assignment_fixed_iface_id;
564 old->assignment_weight = new->assignment_weight;
565 interface_refresh_assignments(true);
570 interface_alias_cb(struct interface_user *dep, struct interface *iface, enum interface_event ev)
572 struct interface *alias = container_of(dep, struct interface, parent_iface);
573 struct device *dev = iface->l3_dev.dev;
580 interface_set_main_dev(alias, dev);
581 interface_set_available(alias, true);
585 interface_set_available(alias, false);
586 interface_set_main_dev(alias, NULL);
589 interface_remove_user(dep);
597 interface_set_device_config(struct interface *iface, struct device *dev)
599 if (!dev || !dev->default_config)
602 if (!iface->device_config &&
603 (!dev->iface_config || dev->config_iface != iface))
606 dev->config_iface = iface;
607 dev->iface_config = iface->device_config;
608 device_apply_config(dev, dev->type, iface->config);
612 interface_claim_device(struct interface *iface)
614 struct interface *parent;
615 struct device *dev = NULL;
617 if (iface->parent_iface.iface)
618 interface_remove_user(&iface->parent_iface);
622 if (iface->parent_ifname) {
623 parent = vlist_find(&interfaces, iface->parent_ifname, parent, node);
624 iface->parent_iface.cb = interface_alias_cb;
625 interface_add_user(&iface->parent_iface, parent);
626 } else if (iface->ifname &&
627 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
628 dev = device_get(iface->ifname, true);
629 interface_set_device_config(iface, dev);
631 dev = iface->ext_dev.dev;
635 interface_set_main_dev(iface, dev);
639 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
640 interface_set_available(iface, true);
644 interface_cleanup_state(struct interface *iface)
646 interface_set_available(iface, false);
648 interface_flush_state(iface);
649 interface_clear_errors(iface);
650 interface_set_proto_state(iface, NULL);
652 interface_set_main_dev(iface, NULL);
653 interface_set_l3_dev(iface, NULL);
657 interface_cleanup(struct interface *iface)
659 struct interface_user *dep, *tmp;
661 uloop_timeout_cancel(&iface->remove_timer);
662 device_remove_user(&iface->ext_dev);
664 if (iface->parent_iface.iface)
665 interface_remove_user(&iface->parent_iface);
667 list_for_each_entry_safe(dep, tmp, &iface->users, list)
668 interface_remove_user(dep);
670 interface_clear_assignment_classes(iface);
671 interface_ip_flush(&iface->config_ip);
672 interface_cleanup_state(iface);
676 interface_do_free(struct interface *iface)
678 interface_event(iface, IFEV_FREE);
679 interface_cleanup(iface);
681 netifd_ubus_remove_interface(iface);
682 avl_delete(&interfaces.avl, &iface->node.avl);
687 interface_do_reload(struct interface *iface)
689 interface_event(iface, IFEV_RELOAD);
690 interface_cleanup_state(iface);
691 proto_init_interface(iface, iface->config);
692 interface_claim_device(iface);
696 interface_handle_config_change(struct interface *iface)
698 enum interface_config_state state = iface->config_state;
700 iface->config_state = IFC_NORMAL;
705 interface_do_reload(iface);
708 interface_do_free(iface);
711 if (iface->autostart)
712 interface_set_up(iface);
716 interface_proto_event_cb(struct interface_proto_state *state, enum interface_proto_event ev)
718 struct interface *iface = state->iface;
722 if (iface->state != IFS_SETUP) {
723 if (iface->state == IFS_UP && iface->updated)
724 interface_event(iface, IFEV_UPDATE);
728 if (!iface->l3_dev.dev)
729 interface_set_l3_dev(iface, iface->main_dev.dev);
731 interface_ip_set_enabled(&iface->config_ip, true);
732 interface_ip_set_enabled(&iface->proto_ip, true);
733 system_flush_routes();
734 iface->state = IFS_UP;
735 iface->start_time = system_get_rtime();
736 interface_event(iface, IFEV_UP);
737 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
740 if (iface->state == IFS_DOWN)
743 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
744 mark_interface_down(iface);
745 if (iface->main_dev.dev)
746 device_release(&iface->main_dev);
747 if (iface->l3_dev.dev)
748 device_remove_user(&iface->l3_dev);
749 interface_handle_config_change(iface);
751 case IFPEV_LINK_LOST:
752 if (iface->state != IFS_UP)
755 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
756 mark_interface_down(iface);
757 iface->state = IFS_SETUP;
763 interface_write_resolv_conf();
766 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
769 iface->proto->free(iface->proto);
772 iface->state = IFS_DOWN;
773 iface->proto = state;
777 state->proto_event = interface_proto_event_cb;
778 state->iface = iface;
782 interface_alloc(const char *name, struct blob_attr *config, bool dynamic)
784 struct interface *iface;
785 struct blob_attr *tb[IFACE_ATTR_MAX];
786 struct blob_attr *cur;
787 const char *proto_name = NULL;
789 bool force_link = false;
791 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
792 iface->name = strcpy(iface_name, name);
793 INIT_LIST_HEAD(&iface->errors);
794 INIT_LIST_HEAD(&iface->users);
795 INIT_LIST_HEAD(&iface->hotplug_list);
796 INIT_LIST_HEAD(&iface->assignment_classes);
797 interface_ip_init(iface);
798 avl_init(&iface->data, avl_strcmp, false, NULL);
799 iface->config_ip.enabled = false;
801 iface->main_dev.cb = interface_main_dev_cb;
802 iface->l3_dev.cb = interface_l3_dev_cb;
803 iface->ext_dev.cb = interface_ext_dev_cb;
805 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
806 blob_data(config), blob_len(config));
808 if ((cur = tb[IFACE_ATTR_PROTO]))
809 proto_name = blobmsg_data(cur);
811 proto_attach_interface(iface, proto_name);
812 if (iface->proto_handler->flags & PROTO_FLAG_FORCE_LINK_DEFAULT)
815 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
816 iface->force_link = blobmsg_get_bool_default(tb[IFACE_ATTR_FORCE_LINK], force_link);
817 iface->dynamic = dynamic;
818 iface->proto_ip.no_defaultroute =
819 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
820 iface->proto_ip.no_dns =
821 !blobmsg_get_bool_default(tb[IFACE_ATTR_PEERDNS], true);
823 if ((cur = tb[IFACE_ATTR_DNS]))
824 interface_add_dns_server_list(&iface->config_ip, cur);
826 if ((cur = tb[IFACE_ATTR_DNS_SEARCH]))
827 interface_add_dns_search_list(&iface->config_ip, cur);
829 if ((cur = tb[IFACE_ATTR_DNS_METRIC]))
830 iface->dns_metric = blobmsg_get_u32(cur);
832 if ((cur = tb[IFACE_ATTR_METRIC]))
833 iface->metric = blobmsg_get_u32(cur);
835 if ((cur = tb[IFACE_ATTR_IP6ASSIGN]))
836 iface->assignment_length = blobmsg_get_u32(cur);
839 iface->assignment_iface_id_selection = IFID_FIXED;
840 iface->assignment_fixed_iface_id = in6addr_any;
841 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
843 if ((cur = tb[IFACE_ATTR_IP6IFACEID])) {
844 const char *ifaceid = blobmsg_data(cur);
845 if (!strcmp(ifaceid, "random")) {
846 iface->assignment_iface_id_selection = IFID_RANDOM;
848 else if (!strcmp(ifaceid, "eui64")) {
849 iface->assignment_iface_id_selection = IFID_EUI64;
852 /* we expect an IPv6 address with network id zero here -> fixed iface id
853 if we cannot parse -> revert to iface id 1 */
854 if (inet_pton(AF_INET6,ifaceid,&iface->assignment_fixed_iface_id) != 1 ||
855 iface->assignment_fixed_iface_id.s6_addr32[0] != 0 ||
856 iface->assignment_fixed_iface_id.s6_addr32[1] != 0) {
857 iface->assignment_fixed_iface_id = in6addr_any;
858 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
859 netifd_log_message(L_WARNING, "Failed to parse ip6ifaceid for interface '%s', \
860 falling back to iface id 1.\n", iface->name);
865 iface->assignment_hint = -1;
866 if ((cur = tb[IFACE_ATTR_IP6HINT]))
867 iface->assignment_hint = strtol(blobmsg_get_string(cur), NULL, 16) &
868 ~((1 << (64 - iface->assignment_length)) - 1);
870 if ((cur = tb[IFACE_ATTR_IP6CLASS]))
871 interface_add_assignment_classes(iface, cur);
873 if ((cur = tb[IFACE_ATTR_IP6WEIGHT]))
874 iface->assignment_weight = blobmsg_get_u32(cur);
876 if ((cur = tb[IFACE_ATTR_IP4TABLE])) {
877 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip4table))
878 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
881 if ((cur = tb[IFACE_ATTR_IP6TABLE])) {
882 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip6table))
883 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
886 iface->proto_ip.no_delegation = !blobmsg_get_bool_default(tb[IFACE_ATTR_DELEGATE], true);
888 iface->config_autostart = iface->autostart;
892 static bool __interface_add(struct interface *iface, struct blob_attr *config, bool alias)
894 struct blob_attr *tb[IFACE_ATTR_MAX];
895 struct blob_attr *cur;
898 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
899 blob_data(config), blob_len(config));
902 if ((cur = tb[IFACE_ATTR_INTERFACE]))
903 iface->parent_ifname = blobmsg_data(cur);
905 if (!iface->parent_ifname)
908 if ((cur = tb[IFACE_ATTR_IFNAME]))
909 iface->ifname = blobmsg_data(cur);
912 if (iface->dynamic) {
913 name = strdup(iface->name);
919 iface->config = config;
920 vlist_add(&interfaces, &iface->node, iface->name);
923 iface = vlist_find(&interfaces, name, iface, node);
926 /* Don't delete dynamic interface on reload */
928 iface->node.version = -1;
935 interface_add(struct interface *iface, struct blob_attr *config)
937 return __interface_add(iface, config, false);
941 interface_add_alias(struct interface *iface, struct blob_attr *config)
943 if (iface->proto_handler->flags & PROTO_FLAG_NODEV)
946 return __interface_add(iface, config, true);
950 interface_set_l3_dev(struct interface *iface, struct device *dev)
952 bool enabled = iface->config_ip.enabled;
953 bool claimed = iface->l3_dev.claimed;
955 if (iface->l3_dev.dev == dev)
958 interface_ip_set_enabled(&iface->config_ip, false);
959 interface_ip_set_enabled(&iface->proto_ip, false);
960 interface_ip_flush(&iface->proto_ip);
961 device_add_user(&iface->l3_dev, dev);
965 if (device_claim(&iface->l3_dev) < 0)
968 interface_ip_set_enabled(&iface->config_ip, enabled);
969 interface_ip_set_enabled(&iface->proto_ip, enabled);
974 interface_set_main_dev(struct interface *iface, struct device *dev)
976 bool claimed = iface->l3_dev.claimed;
978 if (iface->main_dev.dev == dev)
981 interface_set_available(iface, false);
982 device_add_user(&iface->main_dev, dev);
984 interface_set_link_state(iface, false);
989 if (device_claim(&iface->l3_dev) < 0)
993 if (!iface->l3_dev.dev)
994 interface_set_l3_dev(iface, dev);
998 interface_remove_link(struct interface *iface, struct device *dev)
1000 struct device *mdev = iface->main_dev.dev;
1002 if (mdev && mdev->hotplug_ops)
1003 return mdev->hotplug_ops->del(mdev, dev);
1005 if (dev == iface->ext_dev.dev)
1006 device_remove_user(&iface->ext_dev);
1008 if (!iface->main_dev.hotplug)
1009 return UBUS_STATUS_INVALID_ARGUMENT;
1011 if (dev != iface->main_dev.dev)
1012 return UBUS_STATUS_INVALID_ARGUMENT;
1014 interface_set_main_dev(iface, NULL);
1019 interface_add_link(struct interface *iface, struct device *dev, bool link_ext)
1021 struct device *mdev = iface->main_dev.dev;
1026 if (iface->main_dev.hotplug)
1027 device_remove_user(&iface->main_dev);
1030 if (mdev->hotplug_ops)
1031 return mdev->hotplug_ops->add(mdev, dev);
1033 return UBUS_STATUS_NOT_SUPPORTED;
1037 device_add_user(&iface->ext_dev, dev);
1039 interface_set_main_dev(iface, dev);
1040 iface->main_dev.hotplug = true;
1045 interface_handle_link(struct interface *iface, const char *name, bool add, bool link_ext)
1052 dev = device_get(name, add ? (link_ext ? 2 : 1) : 0);
1054 ret = UBUS_STATUS_NOT_FOUND;
1059 interface_set_device_config(iface, dev);
1060 device_set_present(dev, true);
1062 ret = interface_add_link(iface, dev, link_ext);
1064 ret = interface_remove_link(iface, dev);
1074 interface_set_up(struct interface *iface)
1077 const char *error = NULL;
1079 iface->autostart = true;
1081 if (iface->state != IFS_DOWN)
1084 interface_clear_errors(iface);
1085 if (iface->available) {
1086 if (iface->main_dev.dev) {
1087 ret = device_claim(&iface->main_dev);
1089 interface_check_state(iface);
1091 error = "DEVICE_CLAIM_FAILED";
1093 ret = __interface_set_up(iface);
1095 error = "SETUP_FAILED";
1098 error = "NO_DEVICE";
1101 interface_add_error(iface, "interface", error, NULL, 0);
1105 interface_set_down(struct interface *iface)
1108 vlist_for_each_element(&interfaces, iface, node)
1109 __interface_set_down(iface, false);
1111 iface->autostart = false;
1112 __interface_set_down(iface, false);
1117 interface_renew(struct interface *iface)
1119 if (iface->state == IFS_TEARDOWN || iface->state == IFS_DOWN)
1122 return interface_proto_event(iface->proto, PROTO_CMD_RENEW, false);
1126 interface_start_pending(void)
1128 struct interface *iface;
1130 vlist_for_each_element(&interfaces, iface, node) {
1131 if (iface->autostart)
1132 interface_set_up(iface);
1137 set_config_state(struct interface *iface, enum interface_config_state s)
1139 __set_config_state(iface, s);
1140 if (iface->state == IFS_DOWN)
1141 interface_handle_config_change(iface);
1143 __interface_set_down(iface, false);
1147 interface_update_start(struct interface *iface, const bool keep_old)
1152 interface_ip_update_start(&iface->proto_ip);
1156 interface_update_complete(struct interface *iface)
1158 interface_ip_update_complete(&iface->proto_ip);
1162 interface_replace_dns(struct interface_ip_settings *new, struct interface_ip_settings *old)
1164 vlist_simple_replace(&new->dns_servers, &old->dns_servers);
1165 vlist_simple_replace(&new->dns_search, &old->dns_search);
1169 interface_device_config_changed(struct interface *if_old, struct interface *if_new)
1171 struct blob_attr *ntb[__DEV_ATTR_MAX];
1172 struct blob_attr *otb[__DEV_ATTR_MAX];
1173 struct device *dev = if_old->main_dev.dev;
1174 unsigned long diff = 0;
1176 BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / 8);
1181 if (if_old->device_config != if_new->device_config)
1184 if (!if_new->device_config)
1187 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb,
1188 blob_data(if_old->config), blob_len(if_old->config));
1190 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, ntb,
1191 blob_data(if_new->config), blob_len(if_new->config));
1193 uci_blob_diff(ntb, otb, &device_attr_list, &diff);
1198 interface_change_config(struct interface *if_old, struct interface *if_new)
1200 struct blob_attr *old_config = if_old->config;
1201 bool reload = false, reload_ip = false, update_prefix_delegation = false;
1203 #define FIELD_CHANGED_STR(field) \
1204 ((!!if_old->field != !!if_new->field) || \
1206 strcmp(if_old->field, if_new->field) != 0))
1208 if (FIELD_CHANGED_STR(parent_ifname)) {
1209 if (if_old->parent_iface.iface)
1210 interface_remove_user(&if_old->parent_iface);
1214 if (!reload && interface_device_config_changed(if_old, if_new))
1217 if (FIELD_CHANGED_STR(ifname) ||
1218 if_old->proto_handler != if_new->proto_handler)
1221 if (!if_old->proto_handler->config_params)
1222 D(INTERFACE, "No config parameters for interface '%s'\n",
1224 else if (!uci_blob_check_equal(if_old->config, if_new->config,
1225 if_old->proto_handler->config_params))
1228 #define UPDATE(field, __var) ({ \
1229 bool __changed = (if_old->field != if_new->field); \
1230 if_old->field = if_new->field; \
1231 __var |= __changed; \
1234 if_old->config = if_new->config;
1235 if (if_old->config_autostart != if_new->config_autostart) {
1236 if (if_old->config_autostart)
1239 if_old->autostart = if_new->config_autostart;
1242 if_old->device_config = if_new->device_config;
1243 if_old->config_autostart = if_new->config_autostart;
1244 if_old->ifname = if_new->ifname;
1245 if_old->parent_ifname = if_new->parent_ifname;
1246 if_old->dynamic = if_new->dynamic;
1247 if_old->proto_handler = if_new->proto_handler;
1248 if_old->force_link = if_new->force_link;
1249 if_old->dns_metric = if_new->dns_metric;
1251 if (if_old->proto_ip.no_delegation != if_new->proto_ip.no_delegation) {
1252 if_old->proto_ip.no_delegation = if_new->proto_ip.no_delegation;
1253 update_prefix_delegation = true;
1256 if_old->proto_ip.no_dns = if_new->proto_ip.no_dns;
1257 interface_replace_dns(&if_old->config_ip, &if_new->config_ip);
1259 UPDATE(metric, reload_ip);
1260 UPDATE(proto_ip.no_defaultroute, reload_ip);
1261 UPDATE(ip4table, reload_ip);
1262 UPDATE(ip6table, reload_ip);
1263 interface_merge_assignment_data(if_old, if_new);
1268 D(INTERFACE, "Reload interface '%s' because of config changes\n",
1270 interface_clear_errors(if_old);
1271 set_config_state(if_old, IFC_RELOAD);
1276 bool config_ip_enabled = if_old->config_ip.enabled;
1277 bool proto_ip_enabled = if_old->proto_ip.enabled;
1279 interface_ip_set_enabled(&if_old->config_ip, false);
1280 interface_ip_set_enabled(&if_old->proto_ip, false);
1281 interface_ip_set_enabled(&if_old->proto_ip, proto_ip_enabled);
1282 interface_ip_set_enabled(&if_old->config_ip, config_ip_enabled);
1285 if (update_prefix_delegation)
1286 interface_update_prefix_delegation(&if_old->proto_ip);
1288 interface_write_resolv_conf();
1289 if (if_old->main_dev.dev)
1290 interface_check_state(if_old);
1293 if_new->config = NULL;
1294 interface_cleanup(if_new);
1300 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
1301 struct vlist_node *node_old)
1303 struct interface *if_old = container_of(node_old, struct interface, node);
1304 struct interface *if_new = container_of(node_new, struct interface, node);
1306 if (node_old && node_new) {
1307 D(INTERFACE, "Update interface '%s'\n", if_new->name);
1308 interface_change_config(if_old, if_new);
1309 } else if (node_old) {
1310 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
1311 set_config_state(if_old, IFC_REMOVE);
1312 } else if (node_new) {
1313 D(INTERFACE, "Create interface '%s'\n", if_new->name);
1314 interface_event(if_new, IFEV_CREATE);
1315 proto_init_interface(if_new, if_new->config);
1316 interface_claim_device(if_new);
1317 netifd_ubus_add_interface(if_new);
1323 interface_init_list(void)
1325 vlist_init(&interfaces, avl_strcmp, interface_update);
1326 interfaces.keep_old = true;
1327 interfaces.no_delete = true;