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);
80 interface_error_flush(struct interface *iface)
82 struct interface_error *error, *tmp;
84 list_for_each_entry_safe(error, tmp, &iface->errors, list) {
85 list_del(&error->list);
91 interface_clear_errors(struct interface *iface)
93 /* don't flush the errors in case the configured protocol handler matches the
94 running protocol handler and is having the last error capability */
96 (iface->proto->handler->flags & PROTO_FLAG_LASTERROR) &&
97 (iface->proto->handler->name == iface->proto_handler->name)))
98 interface_error_flush(iface);
101 void interface_add_error(struct interface *iface, const char *subsystem,
102 const char *code, const char **data, int n_data)
104 struct interface_error *error;
107 char *dest, *d_subsys, *d_code;
109 /* if the configured protocol handler has the last error support capability,
110 errors should only be added if the running protocol handler matches the
113 (iface->proto->handler->flags & PROTO_FLAG_LASTERROR) &&
114 (iface->proto->handler->name != iface->proto_handler->name))
118 len = n_data * sizeof(char *);
119 datalen = alloca(len);
120 for (i = 0; i < n_data; i++) {
121 datalen[i] = strlen(data[i]) + 1;
126 error = calloc_a(sizeof(*error) + sizeof(char *) + len,
127 &d_subsys, subsystem ? strlen(subsystem) + 1 : 0,
128 &d_code, code ? strlen(code) + 1 : 0);
132 /* Only keep the last flagged error, prevent this list grows unlimitted in case the
133 protocol can't be established (e.g auth failure) */
134 if (iface->proto_handler->flags & PROTO_FLAG_LASTERROR)
135 interface_error_flush(iface);
137 list_add_tail(&error->list, &iface->errors);
139 dest = (char *) &error->data[n_data + 1];
140 for (i = 0; i < n_data; i++) {
141 error->data[i] = dest;
142 memcpy(dest, data[i], datalen[i]);
145 error->data[n_data] = NULL;
148 error->subsystem = strcpy(d_subsys, subsystem);
151 error->code = strcpy(d_code, code);
155 interface_data_del(struct interface *iface, struct interface_data *data)
157 avl_delete(&iface->data, &data->node);
162 interface_data_flush(struct interface *iface)
164 struct interface_data *d, *tmp;
166 avl_for_each_element_safe(&iface->data, d, node, tmp)
167 interface_data_del(iface, d);
171 interface_add_data(struct interface *iface, const struct blob_attr *data)
173 struct interface_data *n, *o;
175 if (!blobmsg_check_attr(data, true))
176 return UBUS_STATUS_INVALID_ARGUMENT;
178 const char *name = blobmsg_name(data);
179 unsigned len = blob_pad_len(data);
181 o = avl_find_element(&iface->data, name, o, node);
183 if (blob_pad_len(o->data) == len && !memcmp(o->data, data, len))
186 interface_data_del(iface, o);
189 n = calloc(1, sizeof(*n) + len);
190 memcpy(n->data, data, len);
191 n->node.key = blobmsg_name(n->data);
192 avl_insert(&iface->data, &n->node);
194 iface->updated |= IUF_DATA;
199 interface_event(struct interface *iface, enum interface_event ev)
201 struct interface_user *dep, *tmp;
202 struct device *adev = NULL;
204 list_for_each_entry_safe(dep, tmp, &iface->users, list)
205 dep->cb(dep, iface, ev);
207 list_for_each_entry_safe(dep, tmp, &iface_all_users, list)
208 dep->cb(dep, iface, ev);
212 interface_error_flush(iface);
213 adev = iface->l3_dev.dev;
216 alias_notify_device(iface->name, adev);
224 interface_flush_state(struct interface *iface)
226 if (iface->l3_dev.dev)
227 device_release(&iface->l3_dev);
228 interface_data_flush(iface);
232 mark_interface_down(struct interface *iface)
234 enum interface_state state = iface->state;
236 if (state == IFS_DOWN)
239 iface->state = IFS_DOWN;
241 interface_event(iface, IFEV_DOWN);
242 interface_ip_set_enabled(&iface->config_ip, false);
243 interface_ip_flush(&iface->proto_ip);
244 interface_flush_state(iface);
245 system_flush_routes();
249 __interface_set_down(struct interface *iface, bool force)
251 enum interface_state state = iface->state;
255 iface->state = IFS_TEARDOWN;
257 interface_event(iface, IFEV_DOWN);
259 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
261 interface_flush_state(iface);
265 if (iface->main_dev.dev)
266 device_release(&iface->main_dev);
274 __interface_set_up(struct interface *iface)
278 netifd_log_message(L_NOTICE, "Interface '%s' is setting up now\n", iface->name);
280 iface->state = IFS_SETUP;
281 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
283 mark_interface_down(iface);
289 interface_check_state(struct interface *iface)
291 bool link_state = iface->link_state || iface->force_link;
293 switch (iface->state) {
296 if (!iface->enabled || !link_state) {
297 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
298 mark_interface_down(iface);
302 if (!iface->available)
305 if (iface->autostart && iface->enabled && link_state && !config_init)
306 __interface_set_up(iface);
314 interface_set_enabled(struct interface *iface, bool new_state)
316 if (iface->enabled == new_state)
319 netifd_log_message(L_NOTICE, "Interface '%s' is %s\n", iface->name, new_state ? "enabled" : "disabled");
320 iface->enabled = new_state;
321 interface_check_state(iface);
325 interface_set_link_state(struct interface *iface, bool new_state)
327 if (iface->link_state == new_state)
330 netifd_log_message(L_NOTICE, "Interface '%s' has link connectivity %s\n", iface->name, new_state ? "" : "loss");
331 iface->link_state = new_state;
332 interface_check_state(iface);
336 interface_ext_dev_cb(struct device_user *dep, enum device_event ev)
338 if (ev == DEV_EVENT_REMOVE)
339 device_remove_user(dep);
343 interface_main_dev_cb(struct device_user *dep, enum device_event ev)
345 struct interface *iface;
346 bool new_state = false;
348 iface = container_of(dep, struct interface, main_dev);
352 case DEV_EVENT_REMOVE:
353 interface_set_available(iface, new_state);
354 if (!new_state && dep->dev && dep->dev->external)
355 interface_set_main_dev(iface, NULL);
360 interface_set_enabled(iface, new_state);
362 case DEV_EVENT_LINK_UP:
364 case DEV_EVENT_LINK_DOWN:
365 interface_set_link_state(iface, new_state);
367 case DEV_EVENT_TOPO_CHANGE:
368 interface_proto_event(iface->proto, PROTO_CMD_RENEW, false);
376 interface_l3_dev_cb(struct device_user *dep, enum device_event ev)
378 struct interface *iface;
380 iface = container_of(dep, struct interface, l3_dev);
381 if (iface->l3_dev.dev == iface->main_dev.dev)
385 case DEV_EVENT_LINK_DOWN:
386 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, false);
394 interface_set_available(struct interface *iface, bool new_state)
396 if (iface->available == new_state)
399 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
400 iface->available = new_state;
403 if (iface->autostart && !config_init)
404 interface_set_up(iface);
406 __interface_set_down(iface, true);
410 interface_add_user(struct interface_user *dep, struct interface *iface)
413 list_add(&dep->list, &iface_all_users);
418 list_add(&dep->list, &iface->users);
419 if (iface->state == IFS_UP)
420 dep->cb(dep, iface, IFEV_UP);
424 interface_remove_user(struct interface_user *dep)
426 list_del_init(&dep->list);
431 interface_add_assignment_classes(struct interface *iface, struct blob_attr *list)
433 struct blob_attr *cur;
436 blobmsg_for_each_attr(cur, list, rem) {
437 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
440 if (!blobmsg_check_attr(cur, NULL))
443 struct interface_assignment_class *c = malloc(sizeof(*c) + blobmsg_data_len(cur));
444 memcpy(c->name, blobmsg_data(cur), blobmsg_data_len(cur));
445 list_add(&c->head, &iface->assignment_classes);
450 interface_clear_assignment_classes(struct interface *iface)
452 while (!list_empty(&iface->assignment_classes)) {
453 struct interface_assignment_class *c = list_first_entry(&iface->assignment_classes,
454 struct interface_assignment_class, head);
461 interface_merge_assignment_data(struct interface *old, struct interface *new)
463 bool changed = (old->assignment_hint != new->assignment_hint ||
464 old->assignment_length != new->assignment_length ||
465 old->assignment_iface_id_selection != new->assignment_iface_id_selection ||
466 (old->assignment_iface_id_selection == IFID_FIXED &&
467 memcmp(&old->assignment_fixed_iface_id, &new->assignment_fixed_iface_id,
468 sizeof(old->assignment_fixed_iface_id))) ||
469 list_empty(&old->assignment_classes) != list_empty(&new->assignment_classes));
471 struct interface_assignment_class *c;
472 list_for_each_entry(c, &new->assignment_classes, head) {
473 // Compare list entries one-by-one to see if there was a change
474 if (list_empty(&old->assignment_classes)) // The new list is longer
480 struct interface_assignment_class *c_old = list_first_entry(&old->assignment_classes,
481 struct interface_assignment_class, head);
483 if (strcmp(c_old->name, c->name)) // An entry didn't match
486 list_del(&c_old->head);
490 // The old list was longer than the new one or the last entry didn't match
491 if (!list_empty(&old->assignment_classes)) {
492 interface_clear_assignment_classes(old);
496 list_splice_init(&new->assignment_classes, &old->assignment_classes);
499 old->assignment_hint = new->assignment_hint;
500 old->assignment_length = new->assignment_length;
501 old->assignment_iface_id_selection = new->assignment_iface_id_selection;
502 old->assignment_fixed_iface_id = new->assignment_fixed_iface_id;
503 interface_refresh_assignments(true);
508 interface_alias_cb(struct interface_user *dep, struct interface *iface, enum interface_event ev)
510 struct interface *alias = container_of(dep, struct interface, parent_iface);
511 struct device *dev = iface->l3_dev.dev;
518 interface_set_main_dev(alias, dev);
519 interface_set_available(alias, true);
522 interface_set_available(alias, false);
523 interface_set_main_dev(alias, NULL);
526 interface_remove_user(dep);
535 interface_set_device_config(struct interface *iface, struct device *dev)
537 if (!dev || !dev->default_config)
540 if (!iface->device_config &&
541 (!dev->iface_config || dev->config_iface != iface))
544 dev->config_iface = iface;
545 dev->iface_config = iface->device_config;
546 device_apply_config(dev, dev->type, iface->config);
550 interface_claim_device(struct interface *iface)
552 struct interface *parent;
553 struct device *dev = NULL;
555 if (iface->parent_iface.iface)
556 interface_remove_user(&iface->parent_iface);
558 if (iface->parent_ifname) {
559 parent = vlist_find(&interfaces, iface->parent_ifname, parent, node);
560 iface->parent_iface.cb = interface_alias_cb;
561 interface_add_user(&iface->parent_iface, parent);
562 } else if (iface->ifname &&
563 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
564 dev = device_get(iface->ifname, true);
565 interface_set_device_config(iface, dev);
567 dev = iface->ext_dev.dev;
571 interface_set_main_dev(iface, dev);
573 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
574 interface_set_available(iface, true);
578 interface_cleanup_state(struct interface *iface)
580 interface_set_available(iface, false);
582 interface_flush_state(iface);
583 interface_clear_errors(iface);
584 interface_set_proto_state(iface, NULL);
586 interface_set_main_dev(iface, NULL);
587 interface_set_l3_dev(iface, NULL);
591 interface_cleanup(struct interface *iface)
593 struct interface_user *dep, *tmp;
595 uloop_timeout_cancel(&iface->remove_timer);
596 device_remove_user(&iface->ext_dev);
598 if (iface->parent_iface.iface)
599 interface_remove_user(&iface->parent_iface);
601 list_for_each_entry_safe(dep, tmp, &iface->users, list)
602 interface_remove_user(dep);
604 interface_clear_assignment_classes(iface);
605 interface_ip_flush(&iface->config_ip);
606 interface_cleanup_state(iface);
610 interface_do_free(struct interface *iface)
612 interface_event(iface, IFEV_FREE);
613 interface_cleanup(iface);
615 netifd_ubus_remove_interface(iface);
616 avl_delete(&interfaces.avl, &iface->node.avl);
621 interface_do_reload(struct interface *iface)
623 interface_event(iface, IFEV_RELOAD);
624 interface_cleanup_state(iface);
625 proto_init_interface(iface, iface->config);
626 interface_claim_device(iface);
630 interface_handle_config_change(struct interface *iface)
632 enum interface_config_state state = iface->config_state;
634 iface->config_state = IFC_NORMAL;
639 interface_do_reload(iface);
642 interface_do_free(iface);
645 if (iface->autostart && iface->available)
646 interface_set_up(iface);
647 else if (iface->dynamic)
648 set_config_state(iface, IFC_REMOVE);
652 interface_proto_event_cb(struct interface_proto_state *state, enum interface_proto_event ev)
654 struct interface *iface = state->iface;
658 if (iface->state != IFS_SETUP) {
659 interface_event(iface, IFEV_UPDATE);
663 if (!iface->l3_dev.dev)
664 interface_set_l3_dev(iface, iface->main_dev.dev);
666 interface_ip_set_enabled(&iface->config_ip, true);
667 system_flush_routes();
668 iface->state = IFS_UP;
669 iface->start_time = system_get_rtime();
670 interface_event(iface, IFEV_UP);
671 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
674 if (iface->state == IFS_DOWN)
677 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
678 mark_interface_down(iface);
679 if (iface->main_dev.dev)
680 device_release(&iface->main_dev);
681 if (iface->l3_dev.dev)
682 device_remove_user(&iface->l3_dev);
683 interface_handle_config_change(iface);
685 case IFPEV_LINK_LOST:
686 if (iface->state != IFS_UP)
689 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
690 mark_interface_down(iface);
691 iface->state = IFS_SETUP;
697 interface_write_resolv_conf();
700 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
703 iface->proto->free(iface->proto);
706 iface->state = IFS_DOWN;
707 iface->proto = state;
711 state->proto_event = interface_proto_event_cb;
712 state->iface = iface;
716 interface_alloc(const char *name, struct blob_attr *config)
718 struct interface *iface;
719 struct blob_attr *tb[IFACE_ATTR_MAX];
720 struct blob_attr *cur;
721 const char *proto_name = NULL;
723 bool force_link = false;
725 iface = calloc_a(sizeof(*iface), &iface_name, strlen(name) + 1);
726 iface->name = strcpy(iface_name, name);
727 INIT_LIST_HEAD(&iface->errors);
728 INIT_LIST_HEAD(&iface->users);
729 INIT_LIST_HEAD(&iface->hotplug_list);
730 INIT_LIST_HEAD(&iface->assignment_classes);
731 interface_ip_init(iface);
732 avl_init(&iface->data, avl_strcmp, false, NULL);
733 iface->config_ip.enabled = false;
735 iface->main_dev.cb = interface_main_dev_cb;
736 iface->l3_dev.cb = interface_l3_dev_cb;
737 iface->ext_dev.cb = interface_ext_dev_cb;
739 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
740 blob_data(config), blob_len(config));
742 if ((cur = tb[IFACE_ATTR_PROTO]))
743 proto_name = blobmsg_data(cur);
745 proto_attach_interface(iface, proto_name);
746 if (iface->proto_handler->flags & PROTO_FLAG_FORCE_LINK_DEFAULT)
749 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
750 iface->force_link = blobmsg_get_bool_default(tb[IFACE_ATTR_FORCE_LINK], force_link);
751 iface->proto_ip.no_defaultroute =
752 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
753 iface->proto_ip.no_dns =
754 !blobmsg_get_bool_default(tb[IFACE_ATTR_PEERDNS], true);
756 if ((cur = tb[IFACE_ATTR_DNS]))
757 interface_add_dns_server_list(&iface->config_ip, cur);
759 if ((cur = tb[IFACE_ATTR_DNS_SEARCH]))
760 interface_add_dns_search_list(&iface->config_ip, cur);
762 if ((cur = tb[IFACE_ATTR_METRIC]))
763 iface->metric = blobmsg_get_u32(cur);
765 if ((cur = tb[IFACE_ATTR_IP6ASSIGN]))
766 iface->assignment_length = blobmsg_get_u32(cur);
769 iface->assignment_iface_id_selection = IFID_FIXED;
770 iface->assignment_fixed_iface_id = in6addr_any;
771 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
773 if ((cur = tb[IFACE_ATTR_IP6IFACEID])) {
774 const char *ifaceid = blobmsg_data(cur);
775 if (!strcmp(ifaceid, "random")) {
776 iface->assignment_iface_id_selection = IFID_RANDOM;
778 else if (!strcmp(ifaceid, "eui64")) {
779 iface->assignment_iface_id_selection = IFID_EUI64;
782 /* we expect an IPv6 address with network id zero here -> fixed iface id
783 if we cannot parse -> revert to iface id 1 */
784 if (inet_pton(AF_INET6,ifaceid,&iface->assignment_fixed_iface_id) != 1 ||
785 iface->assignment_fixed_iface_id.s6_addr32[0] != 0 ||
786 iface->assignment_fixed_iface_id.s6_addr32[1] != 0) {
787 iface->assignment_fixed_iface_id = in6addr_any;
788 iface->assignment_fixed_iface_id.s6_addr[15] = 1;
789 netifd_log_message(L_WARNING, "Failed to parse ip6ifaceid for interface '%s', \
790 falling back to iface id 1.\n", iface->name);
795 iface->assignment_hint = -1;
796 if ((cur = tb[IFACE_ATTR_IP6HINT]))
797 iface->assignment_hint = strtol(blobmsg_get_string(cur), NULL, 16) &
798 ~((1 << (64 - iface->assignment_length)) - 1);
800 if ((cur = tb[IFACE_ATTR_IP6CLASS]))
801 interface_add_assignment_classes(iface, cur);
804 if ((cur = tb[IFACE_ATTR_IP4TABLE])) {
805 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip4table))
806 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
809 if ((cur = tb[IFACE_ATTR_IP6TABLE])) {
810 if (!system_resolve_rt_table(blobmsg_data(cur), &iface->ip6table))
811 DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
814 iface->proto_ip.no_delegation = !blobmsg_get_bool_default(tb[IFACE_ATTR_DELEGATE], true);
816 iface->config_autostart = iface->autostart;
820 void interface_set_dynamic(struct interface *iface)
822 iface->dynamic = true;
823 iface->autostart = true;
824 iface->node.version = -1; // Don't delete on reload
827 static bool __interface_add(struct interface *iface, struct blob_attr *config, bool alias)
829 struct blob_attr *tb[IFACE_ATTR_MAX];
830 struct blob_attr *cur;
832 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
833 blob_data(config), blob_len(config));
836 if ((cur = tb[IFACE_ATTR_INTERFACE]))
837 iface->parent_ifname = blobmsg_data(cur);
839 if (!iface->parent_ifname)
842 if ((cur = tb[IFACE_ATTR_IFNAME]))
843 iface->ifname = blobmsg_data(cur);
846 iface->config = config;
847 vlist_add(&interfaces, &iface->node, iface->name);
852 interface_add(struct interface *iface, struct blob_attr *config)
854 __interface_add(iface, config, false);
858 interface_add_alias(struct interface *iface, struct blob_attr *config)
860 if (iface->proto_handler->flags & PROTO_FLAG_NODEV)
863 return __interface_add(iface, config, true);
867 interface_set_l3_dev(struct interface *iface, struct device *dev)
869 bool enabled = iface->config_ip.enabled;
870 bool claimed = iface->l3_dev.claimed;
872 if (iface->l3_dev.dev == dev)
875 interface_ip_set_enabled(&iface->config_ip, false);
876 interface_ip_flush(&iface->proto_ip);
877 device_add_user(&iface->l3_dev, dev);
881 if (device_claim(&iface->l3_dev) < 0)
884 interface_ip_set_enabled(&iface->config_ip, enabled);
889 interface_set_main_dev(struct interface *iface, struct device *dev)
891 bool claimed = iface->l3_dev.claimed;
893 if (iface->main_dev.dev == dev)
896 interface_set_available(iface, false);
897 device_add_user(&iface->main_dev, dev);
899 interface_set_link_state(iface, false);
904 if (device_claim(&iface->l3_dev) < 0)
908 if (!iface->l3_dev.dev)
909 interface_set_l3_dev(iface, dev);
913 interface_remove_link(struct interface *iface, struct device *dev)
915 struct device *mdev = iface->main_dev.dev;
917 if (mdev && mdev->hotplug_ops)
918 return mdev->hotplug_ops->del(mdev, dev);
920 if (dev == iface->ext_dev.dev)
921 device_remove_user(&iface->ext_dev);
923 if (!iface->main_dev.hotplug)
924 return UBUS_STATUS_INVALID_ARGUMENT;
926 if (dev != iface->main_dev.dev)
927 return UBUS_STATUS_INVALID_ARGUMENT;
929 interface_set_main_dev(iface, NULL);
934 interface_add_link(struct interface *iface, struct device *dev, bool link_ext)
936 struct device *mdev = iface->main_dev.dev;
941 if (iface->main_dev.hotplug)
942 device_remove_user(&iface->main_dev);
945 if (mdev->hotplug_ops)
946 return mdev->hotplug_ops->add(mdev, dev);
948 return UBUS_STATUS_NOT_SUPPORTED;
952 device_add_user(&iface->ext_dev, dev);
954 interface_set_main_dev(iface, dev);
955 iface->main_dev.hotplug = true;
960 interface_handle_link(struct interface *iface, const char *name, bool add, bool link_ext)
967 dev = device_get(name, add ? (link_ext ? 2 : 1) : 0);
969 ret = UBUS_STATUS_NOT_FOUND;
974 interface_set_device_config(iface, dev);
975 device_set_present(dev, true);
977 ret = interface_add_link(iface, dev, link_ext);
979 ret = interface_remove_link(iface, dev);
989 interface_set_up(struct interface *iface)
993 iface->autostart = true;
995 if (iface->state != IFS_DOWN)
998 interface_clear_errors(iface);
999 if (!iface->available) {
1000 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
1004 if (iface->main_dev.dev) {
1005 ret = device_claim(&iface->main_dev);
1007 interface_check_state(iface);
1010 ret = __interface_set_up(iface);
1016 interface_set_down(struct interface *iface)
1019 vlist_for_each_element(&interfaces, iface, node)
1020 __interface_set_down(iface, false);
1022 iface->autostart = false;
1023 __interface_set_down(iface, false);
1030 interface_start_pending(void)
1032 struct interface *iface;
1034 vlist_for_each_element(&interfaces, iface, node) {
1035 if (iface->available && iface->autostart)
1036 interface_set_up(iface);
1041 set_config_state(struct interface *iface, enum interface_config_state s)
1043 iface->config_state = s;
1044 if (iface->state == IFS_DOWN)
1045 interface_handle_config_change(iface);
1047 __interface_set_down(iface, false);
1051 interface_update_start(struct interface *iface)
1054 interface_ip_update_start(&iface->proto_ip);
1058 interface_update_complete(struct interface *iface)
1060 interface_ip_update_complete(&iface->proto_ip);
1064 interface_replace_dns(struct interface_ip_settings *new, struct interface_ip_settings *old)
1066 vlist_simple_replace(&new->dns_servers, &old->dns_servers);
1067 vlist_simple_replace(&new->dns_search, &old->dns_search);
1071 interface_device_config_changed(struct interface *if_old, struct interface *if_new)
1073 struct blob_attr *ntb[__DEV_ATTR_MAX];
1074 struct blob_attr *otb[__DEV_ATTR_MAX];
1075 struct device *dev = if_old->main_dev.dev;
1076 unsigned long diff = 0;
1078 BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / 8);
1083 if (if_old->device_config != if_new->device_config)
1086 if (!if_new->device_config)
1089 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb,
1090 blob_data(if_old->config), blob_len(if_old->config));
1092 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, ntb,
1093 blob_data(if_new->config), blob_len(if_new->config));
1095 uci_blob_diff(ntb, otb, &device_attr_list, &diff);
1100 interface_change_config(struct interface *if_old, struct interface *if_new)
1102 struct blob_attr *old_config = if_old->config;
1103 bool reload = false, reload_ip = false;
1105 #define FIELD_CHANGED_STR(field) \
1106 ((!!if_old->field != !!if_new->field) || \
1108 strcmp(if_old->field, if_new->field) != 0))
1110 if (FIELD_CHANGED_STR(parent_ifname)) {
1111 if (if_old->parent_iface.iface)
1112 interface_remove_user(&if_old->parent_iface);
1116 if (!reload && interface_device_config_changed(if_old, if_new))
1119 if (FIELD_CHANGED_STR(ifname) ||
1120 if_old->proto_handler != if_new->proto_handler)
1123 if (!if_old->proto_handler->config_params)
1124 D(INTERFACE, "No config parameters for interface '%s'\n",
1126 else if (!uci_blob_check_equal(if_old->config, if_new->config,
1127 if_old->proto_handler->config_params))
1130 #define UPDATE(field, __var) ({ \
1131 bool __changed = (if_old->field != if_new->field); \
1132 if_old->field = if_new->field; \
1133 __var |= __changed; \
1136 if_old->config = if_new->config;
1137 if (if_old->config_autostart != if_new->config_autostart) {
1138 if (if_old->config_autostart)
1141 if_old->autostart = if_new->config_autostart;
1144 if_old->device_config = if_new->device_config;
1145 if_old->config_autostart = if_new->config_autostart;
1146 if_old->ifname = if_new->ifname;
1147 if_old->parent_ifname = if_new->parent_ifname;
1148 if_old->proto_handler = if_new->proto_handler;
1149 if_old->force_link = if_new->force_link;
1151 if_old->proto_ip.no_dns = if_new->proto_ip.no_dns;
1152 interface_replace_dns(&if_old->config_ip, &if_new->config_ip);
1154 UPDATE(metric, reload_ip);
1155 UPDATE(proto_ip.no_defaultroute, reload_ip);
1156 UPDATE(ip4table, reload_ip);
1157 UPDATE(ip6table, reload_ip);
1158 interface_merge_assignment_data(if_old, if_new);
1163 D(INTERFACE, "Reload interface '%s' because of config changes\n",
1165 interface_clear_errors(if_old);
1166 set_config_state(if_old, IFC_RELOAD);
1171 bool config_ip_enabled = if_old->config_ip.enabled;
1172 bool proto_ip_enabled = if_old->proto_ip.enabled;
1174 interface_ip_set_enabled(&if_old->config_ip, false);
1175 interface_ip_set_enabled(&if_old->proto_ip, false);
1176 interface_ip_set_enabled(&if_old->proto_ip, proto_ip_enabled);
1177 interface_ip_set_enabled(&if_old->config_ip, config_ip_enabled);
1180 interface_write_resolv_conf();
1181 if (if_old->main_dev.dev)
1182 interface_check_state(if_old);
1185 if_new->config = NULL;
1186 interface_cleanup(if_new);
1192 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
1193 struct vlist_node *node_old)
1195 struct interface *if_old = container_of(node_old, struct interface, node);
1196 struct interface *if_new = container_of(node_new, struct interface, node);
1198 if (node_old && node_new) {
1199 D(INTERFACE, "Update interface '%s'\n", if_new->name);
1200 interface_change_config(if_old, if_new);
1201 } else if (node_old) {
1202 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
1203 set_config_state(if_old, IFC_REMOVE);
1204 } else if (node_new) {
1205 D(INTERFACE, "Create interface '%s'\n", if_new->name);
1206 proto_init_interface(if_new, if_new->config);
1207 interface_claim_device(if_new);
1208 netifd_ubus_add_interface(if_new);
1214 interface_init_list(void)
1216 vlist_init(&interfaces, avl_strcmp, interface_update);
1217 interfaces.keep_old = true;
1218 interfaces.no_delete = true;