8 #include "interface-ip.h"
14 struct vlist_tree interfaces;
15 static LIST_HEAD(iface_all_users);
21 IFACE_ATTR_DEFAULTROUTE,
26 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
27 [IFACE_ATTR_PROTO] = { .name = "proto", .type = BLOBMSG_TYPE_STRING },
28 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
29 [IFACE_ATTR_AUTO] = { .name = "auto", .type = BLOBMSG_TYPE_BOOL },
30 [IFACE_ATTR_DEFAULTROUTE] = { .name = "defaultroute", .type = BLOBMSG_TYPE_BOOL },
31 [IFACE_ATTR_METRIC] = { .name = "metric", .type = BLOBMSG_TYPE_INT32 },
34 const struct config_param_list interface_attr_list = {
35 .n_params = IFACE_ATTR_MAX,
36 .params = iface_attrs,
40 interface_clear_errors(struct interface *iface)
42 struct interface_error *error, *tmp;
44 list_for_each_entry_safe(error, tmp, &iface->errors, list) {
45 list_del(&error->list);
50 void interface_add_error(struct interface *iface, const char *subsystem,
51 const char *code, const char **data, int n_data)
53 struct interface_error *error;
59 len = n_data * sizeof(char *);
60 datalen = alloca(len);
61 for (i = 0; i < n_data; i++) {
62 datalen[i] = strlen(data[i]) + 1;
67 error = calloc(1, sizeof(*error) + sizeof(char *) + len);
71 list_add_tail(&error->list, &iface->errors);
72 error->subsystem = subsystem;
75 dest = (char *) &error->data[n_data + 1];
76 for (i = 0; i < n_data; i++) {
77 error->data[i] = dest;
78 memcpy(dest, data[i], datalen[i]);
81 error->data[n_data] = NULL;
85 interface_data_del(struct interface *iface, struct interface_data *data)
87 avl_delete(&iface->data, &data->node);
92 interface_data_flush(struct interface *iface)
94 struct interface_data *d, *tmp;
96 avl_for_each_element_safe(&iface->data, d, node, tmp)
97 interface_data_del(iface, d);
101 interface_add_data(struct interface *iface, const struct blob_attr *data)
103 struct interface_data *n, *o;
105 if (!blobmsg_check_attr(data, true))
106 return UBUS_STATUS_INVALID_ARGUMENT;
108 n = calloc(1, sizeof(*data) + blob_pad_len(data));
109 memcpy(n->data, data, blob_pad_len(data));
110 n->node.key = blobmsg_name(data);
112 o = avl_find_element(&iface->data, n->node.key, o, node);
114 interface_data_del(iface, o);
116 avl_insert(&iface->data, &n->node);
121 interface_event(struct interface *iface, enum interface_event ev)
123 struct interface_user *dep, *tmp;
125 list_for_each_entry_safe(dep, tmp, &iface->users, list)
126 dep->cb(dep, iface, ev);
128 list_for_each_entry_safe(dep, tmp, &iface_all_users, list)
129 dep->cb(dep, iface, ev);
131 interface_queue_event(iface, ev);
135 interface_flush_state(struct interface *iface)
137 if (iface->main_dev.dev)
138 device_release(&iface->main_dev);
139 if (iface->l3_dev.dev)
140 device_release(&iface->l3_dev);
141 interface_data_flush(iface);
145 mark_interface_down(struct interface *iface)
147 if (iface->state == IFS_UP)
148 interface_event(iface, IFEV_DOWN);
149 interface_ip_set_enabled(&iface->config_ip, false);
150 interface_ip_flush(&iface->proto_ip);
151 interface_flush_state(iface);
152 system_flush_routes();
153 iface->state = IFS_DOWN;
157 __interface_set_down(struct interface *iface, bool force)
159 interface_clear_errors(iface);
161 if (iface->state == IFS_DOWN ||
162 iface->state == IFS_TEARDOWN)
165 if (iface->state == IFS_UP)
166 interface_event(iface, IFEV_DOWN);
167 iface->state = IFS_TEARDOWN;
168 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
170 interface_flush_state(iface);
174 interface_cb(struct device_user *dep, enum device_event ev)
176 struct interface *iface;
179 iface = container_of(dep, struct interface, main_dev);
184 case DEV_EVENT_REMOVE:
191 interface_set_available(iface, new_state);
195 interface_set_available(struct interface *iface, bool new_state)
197 if (iface->available == new_state)
200 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
201 iface->available = new_state;
204 if (iface->autostart && !config_init)
205 interface_set_up(iface);
207 __interface_set_down(iface, true);
211 interface_add_user(struct interface_user *dep, struct interface *iface)
214 list_add(&dep->list, &iface_all_users);
219 list_add(&dep->list, &iface->users);
220 if (iface->state == IFS_UP)
221 dep->cb(dep, iface, IFEV_UP);
225 interface_remove_user(struct interface_user *dep)
227 list_del_init(&dep->list);
232 interface_claim_device(struct interface *iface)
237 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
238 dev = device_get(iface->ifname, true);
240 interface_set_main_dev(iface, dev);
242 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
243 interface_set_available(iface, true);
248 interface_cleanup(struct interface *iface, bool reload)
250 struct interface_user *dep, *tmp;
252 list_for_each_entry_safe(dep, tmp, &iface->users, list)
253 interface_remove_user(dep);
255 interface_dequeue_event(iface);
256 interface_ip_flush(&iface->config_ip);
257 interface_flush_state(iface);
258 interface_clear_errors(iface);
259 if (iface->main_dev.dev &&
260 (!reload || !iface->main_dev.hotplug))
261 interface_set_main_dev(iface, NULL);
262 interface_set_proto_state(iface, NULL);
266 interface_do_free(struct interface *iface)
268 interface_event(iface, IFEV_FREE);
269 interface_cleanup(iface, false);
271 netifd_ubus_remove_interface(iface);
272 avl_delete(&interfaces.avl, &iface->node.avl);
277 interface_do_reload(struct interface *iface)
279 interface_cleanup(iface, true);
280 proto_init_interface(iface, iface->config);
281 interface_claim_device(iface);
285 interface_handle_config_change(struct interface *iface)
287 switch(iface->config_state) {
291 interface_do_reload(iface);
294 interface_do_free(iface);
297 if (iface->autostart && iface->available)
298 interface_set_up(iface);
302 interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
304 struct interface *iface = state->iface;
308 if (iface->state != IFS_SETUP)
311 interface_ip_set_enabled(&iface->config_ip, true);
312 system_flush_routes();
313 iface->state = IFS_UP;
314 iface->start_time = system_get_rtime();
315 interface_event(iface, IFEV_UP);
316 interface_write_resolv_conf();
317 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
320 if (iface->state == IFS_DOWN)
323 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
324 mark_interface_down(iface);
325 interface_handle_config_change(iface);
327 case IFPEV_LINK_LOST:
328 if (iface->state != IFS_UP)
331 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
332 mark_interface_down(iface);
333 iface->state = IFS_SETUP;
338 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
341 iface->proto->free(iface->proto);
344 iface->state = IFS_DOWN;
345 iface->proto = state;
349 state->proto_event = interface_proto_cb;
350 state->iface = iface;
354 interface_init(struct interface *iface, const char *name,
355 struct blob_attr *config)
357 struct blob_attr *tb[IFACE_ATTR_MAX];
358 struct blob_attr *cur;
359 const char *proto_name = NULL;
361 strncpy(iface->name, name, sizeof(iface->name) - 1);
362 INIT_LIST_HEAD(&iface->errors);
363 INIT_LIST_HEAD(&iface->users);
364 INIT_LIST_HEAD(&iface->hotplug_list);
365 interface_ip_init(iface);
366 avl_init(&iface->data, avl_strcmp, false, NULL);
367 iface->config_ip.enabled = false;
369 iface->main_dev.cb = interface_cb;
371 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
372 blob_data(config), blob_len(config));
374 if ((cur = tb[IFACE_ATTR_PROTO]))
375 proto_name = blobmsg_data(cur);
377 proto_attach_interface(iface, proto_name);
379 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
380 iface->proto_ip.no_defaultroute =
381 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
383 iface->config_autostart = iface->autostart;
387 interface_add(struct interface *iface, struct blob_attr *config)
389 struct blob_attr *tb[IFACE_ATTR_MAX];
390 struct blob_attr *cur;
392 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
393 blob_data(config), blob_len(config));
395 if ((cur = tb[IFACE_ATTR_IFNAME]))
396 iface->ifname = blobmsg_data(cur);
398 iface->config = config;
399 vlist_add(&interfaces, &iface->node, iface->name);
403 interface_set_l3_dev(struct interface *iface, struct device *dev)
405 bool enabled = iface->config_ip.enabled;
406 bool claimed = iface->l3_dev.claimed;
408 if (iface->l3_dev.dev == dev)
411 interface_ip_set_enabled(&iface->config_ip, false);
412 interface_ip_flush(&iface->proto_ip);
413 device_add_user(&iface->l3_dev, dev);
417 device_claim(&iface->l3_dev);
418 interface_ip_set_enabled(&iface->config_ip, enabled);
423 interface_set_main_dev(struct interface *iface, struct device *dev)
425 bool set_l3 = (iface->main_dev.dev == iface->l3_dev.dev);
426 bool claimed = iface->l3_dev.claimed;
428 if (iface->main_dev.dev == dev)
432 interface_set_l3_dev(iface, dev);
434 device_add_user(&iface->main_dev, dev);
436 device_claim(&iface->l3_dev);
438 if (!iface->l3_dev.dev)
439 interface_set_l3_dev(iface, dev);
443 interface_remove_link(struct interface *iface, struct device *dev)
445 struct device *mdev = iface->main_dev.dev;
447 if (mdev && mdev->hotplug_ops)
448 return mdev->hotplug_ops->del(mdev, dev);
450 if (!iface->main_dev.hotplug)
451 return UBUS_STATUS_INVALID_ARGUMENT;
453 if (dev != iface->main_dev.dev)
454 return UBUS_STATUS_INVALID_ARGUMENT;
456 device_remove_user(&iface->main_dev);
461 interface_add_link(struct interface *iface, struct device *dev)
463 struct device *mdev = iface->main_dev.dev;
468 if (iface->main_dev.hotplug)
469 device_remove_user(&iface->main_dev);
472 if (mdev->hotplug_ops)
473 return mdev->hotplug_ops->add(mdev, dev);
475 return UBUS_STATUS_NOT_SUPPORTED;
478 interface_set_main_dev(iface, dev);
479 iface->main_dev.hotplug = true;
484 interface_set_up(struct interface *iface)
488 iface->autostart = true;
490 if (iface->state != IFS_DOWN)
493 interface_clear_errors(iface);
494 if (!iface->available) {
495 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
499 if (iface->main_dev.dev) {
500 ret = device_claim(&iface->main_dev);
505 iface->state = IFS_SETUP;
506 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
508 mark_interface_down(iface);
516 interface_set_down(struct interface *iface)
519 vlist_for_each_element(&interfaces, iface, node)
520 __interface_set_down(iface, false);
522 iface->autostart = false;
523 __interface_set_down(iface, false);
530 interface_start_pending(void)
532 struct interface *iface;
534 vlist_for_each_element(&interfaces, iface, node) {
535 if (iface->available && iface->autostart)
536 interface_set_up(iface);
541 set_config_state(struct interface *iface, enum interface_config_state s)
543 iface->config_state = s;
544 if (iface->state == IFS_DOWN)
545 interface_handle_config_change(iface);
547 __interface_set_down(iface, false);
551 interface_update_start(struct interface *iface)
553 interface_ip_update_start(&iface->proto_ip);
557 interface_update_complete(struct interface *iface)
559 interface_ip_update_complete(&iface->proto_ip);
563 interface_change_config(struct interface *if_old, struct interface *if_new)
565 struct blob_attr *old_config = if_old->config;
566 const char *old_ifname = if_old->ifname;
567 const struct proto_handler *proto = if_old->proto_handler;
569 interface_clear_errors(if_old);
570 if_old->config = if_new->config;
571 if (!if_old->config_autostart && if_new->config_autostart)
572 if_old->autostart = true;
574 if_old->config_autostart = if_new->config_autostart;
575 if_old->ifname = if_new->ifname;
576 if_old->proto_handler = if_new->proto_handler;
578 if ((!!old_ifname != !!if_new->ifname) ||
579 (old_ifname && strcmp(old_ifname, if_new->ifname) != 0) ||
580 proto != if_new->proto_handler) {
581 D(INTERFACE, "Reload interface '%s' because of ifname/proto change\n",
586 if (!proto->config_params)
587 D(INTERFACE, "No config parameters for interface '%s'\n",
589 else if (!config_check_equal(old_config, if_new->config,
590 proto->config_params)) {
591 D(INTERFACE, "Reload interface '%s because of config changes\n",
596 #define UPDATE(field) ({ \
597 bool __changed = (if_old->field != if_new->field); \
598 if_old->field = if_new->field; \
602 if (UPDATE(metric) || UPDATE(proto_ip.no_defaultroute)) {
603 interface_ip_set_enabled(&if_old->config_ip, false);
604 interface_ip_set_enabled(&if_old->config_ip, if_new->config_ip.enabled);
605 interface_ip_set_enabled(&if_old->proto_ip, false);
606 interface_ip_set_enabled(&if_old->proto_ip, if_new->proto_ip.enabled);
614 set_config_state(if_old, IFC_RELOAD);
621 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
622 struct vlist_node *node_old)
624 struct interface *if_old = container_of(node_old, struct interface, node);
625 struct interface *if_new = container_of(node_new, struct interface, node);
627 if (node_old && node_new) {
628 D(INTERFACE, "Update interface '%s'\n", if_new->name);
629 interface_change_config(if_old, if_new);
630 } else if (node_old) {
631 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
632 set_config_state(if_old, IFC_REMOVE);
633 } else if (node_new) {
634 D(INTERFACE, "Create interface '%s'\n", if_new->name);
635 proto_init_interface(if_new, if_new->config);
636 interface_claim_device(if_new);
637 netifd_ubus_add_interface(if_new);
643 interface_init_list(void)
645 vlist_init(&interfaces, avl_strcmp, interface_update);
646 interfaces.keep_old = true;
647 interfaces.no_delete = true;