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_cleanup(iface, false);
270 netifd_ubus_remove_interface(iface);
271 avl_delete(&interfaces.avl, &iface->node.avl);
276 interface_do_reload(struct interface *iface)
278 interface_cleanup(iface, true);
279 proto_init_interface(iface, iface->config);
280 interface_claim_device(iface);
284 interface_handle_config_change(struct interface *iface)
286 switch(iface->config_state) {
290 interface_do_reload(iface);
293 interface_do_free(iface);
296 if (iface->autostart && iface->available)
297 interface_set_up(iface);
301 interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
303 struct interface *iface = state->iface;
307 if (iface->state != IFS_SETUP)
310 interface_ip_set_enabled(&iface->config_ip, true);
311 system_flush_routes();
312 iface->state = IFS_UP;
313 iface->start_time = system_get_rtime();
314 interface_event(iface, IFEV_UP);
315 interface_write_resolv_conf();
316 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
319 if (iface->state == IFS_DOWN)
322 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
323 mark_interface_down(iface);
324 interface_handle_config_change(iface);
326 case IFPEV_LINK_LOST:
327 if (iface->state != IFS_UP)
330 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
331 mark_interface_down(iface);
332 iface->state = IFS_SETUP;
337 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
340 iface->proto->free(iface->proto);
343 iface->state = IFS_DOWN;
344 iface->proto = state;
348 state->proto_event = interface_proto_cb;
349 state->iface = iface;
353 interface_init(struct interface *iface, const char *name,
354 struct blob_attr *config)
356 struct blob_attr *tb[IFACE_ATTR_MAX];
357 struct blob_attr *cur;
358 const char *proto_name = NULL;
360 strncpy(iface->name, name, sizeof(iface->name) - 1);
361 INIT_LIST_HEAD(&iface->errors);
362 INIT_LIST_HEAD(&iface->users);
363 INIT_LIST_HEAD(&iface->hotplug_list);
364 interface_ip_init(iface);
365 avl_init(&iface->data, avl_strcmp, false, NULL);
366 iface->config_ip.enabled = false;
368 iface->main_dev.cb = interface_cb;
370 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
371 blob_data(config), blob_len(config));
373 if ((cur = tb[IFACE_ATTR_PROTO]))
374 proto_name = blobmsg_data(cur);
376 proto_attach_interface(iface, proto_name);
378 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
379 iface->proto_ip.no_defaultroute =
380 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
382 iface->config_autostart = iface->autostart;
386 interface_add(struct interface *iface, struct blob_attr *config)
388 struct blob_attr *tb[IFACE_ATTR_MAX];
389 struct blob_attr *cur;
391 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
392 blob_data(config), blob_len(config));
394 if ((cur = tb[IFACE_ATTR_IFNAME]))
395 iface->ifname = blobmsg_data(cur);
397 iface->config = config;
398 vlist_add(&interfaces, &iface->node, iface->name);
402 interface_set_l3_dev(struct interface *iface, struct device *dev)
404 bool enabled = iface->config_ip.enabled;
405 bool claimed = iface->l3_dev.claimed;
407 if (iface->l3_dev.dev == dev)
410 interface_ip_set_enabled(&iface->config_ip, false);
411 interface_ip_flush(&iface->proto_ip);
412 device_add_user(&iface->l3_dev, dev);
416 device_claim(&iface->l3_dev);
417 interface_ip_set_enabled(&iface->config_ip, enabled);
422 interface_set_main_dev(struct interface *iface, struct device *dev)
424 bool set_l3 = (iface->main_dev.dev == iface->l3_dev.dev);
425 bool claimed = iface->l3_dev.claimed;
427 if (iface->main_dev.dev == dev)
431 interface_set_l3_dev(iface, dev);
433 device_add_user(&iface->main_dev, dev);
435 device_claim(&iface->l3_dev);
437 if (!iface->l3_dev.dev)
438 interface_set_l3_dev(iface, dev);
442 interface_remove_link(struct interface *iface, struct device *dev)
444 struct device *mdev = iface->main_dev.dev;
446 if (mdev && mdev->hotplug_ops)
447 return mdev->hotplug_ops->del(mdev, dev);
449 if (!iface->main_dev.hotplug)
450 return UBUS_STATUS_INVALID_ARGUMENT;
452 if (dev != iface->main_dev.dev)
453 return UBUS_STATUS_INVALID_ARGUMENT;
455 device_remove_user(&iface->main_dev);
460 interface_add_link(struct interface *iface, struct device *dev)
462 struct device *mdev = iface->main_dev.dev;
467 if (iface->main_dev.hotplug)
468 device_remove_user(&iface->main_dev);
471 if (mdev->hotplug_ops)
472 return mdev->hotplug_ops->add(mdev, dev);
474 return UBUS_STATUS_NOT_SUPPORTED;
477 interface_set_main_dev(iface, dev);
478 iface->main_dev.hotplug = true;
483 interface_set_up(struct interface *iface)
487 iface->autostart = true;
489 if (iface->state != IFS_DOWN)
492 interface_clear_errors(iface);
493 if (!iface->available) {
494 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
498 if (iface->main_dev.dev) {
499 ret = device_claim(&iface->main_dev);
504 iface->state = IFS_SETUP;
505 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
507 mark_interface_down(iface);
515 interface_set_down(struct interface *iface)
518 vlist_for_each_element(&interfaces, iface, node)
519 __interface_set_down(iface, false);
521 iface->autostart = false;
522 __interface_set_down(iface, false);
529 interface_start_pending(void)
531 struct interface *iface;
533 vlist_for_each_element(&interfaces, iface, node) {
534 if (iface->available && iface->autostart)
535 interface_set_up(iface);
540 set_config_state(struct interface *iface, enum interface_config_state s)
542 iface->config_state = s;
543 if (iface->state == IFS_DOWN)
544 interface_handle_config_change(iface);
546 __interface_set_down(iface, false);
550 interface_update_start(struct interface *iface)
552 interface_ip_update_start(&iface->proto_ip);
556 interface_update_complete(struct interface *iface)
558 interface_ip_update_complete(&iface->proto_ip);
562 interface_change_config(struct interface *if_old, struct interface *if_new)
564 struct blob_attr *old_config = if_old->config;
565 const char *old_ifname = if_old->ifname;
566 const struct proto_handler *proto = if_old->proto_handler;
568 interface_clear_errors(if_old);
569 if_old->config = if_new->config;
570 if (!if_old->config_autostart && if_new->config_autostart)
571 if_old->autostart = true;
573 if_old->config_autostart = if_new->config_autostart;
574 if_old->ifname = if_new->ifname;
575 if_old->proto_handler = if_new->proto_handler;
577 if ((!!old_ifname != !!if_new->ifname) ||
578 (old_ifname && strcmp(old_ifname, if_new->ifname) != 0) ||
579 proto != if_new->proto_handler) {
580 D(INTERFACE, "Reload interface '%s' because of ifname/proto change\n",
585 if (!proto->config_params)
586 D(INTERFACE, "No config parameters for interface '%s'\n",
588 else if (!config_check_equal(old_config, if_new->config,
589 proto->config_params)) {
590 D(INTERFACE, "Reload interface '%s because of config changes\n",
595 #define UPDATE(field) ({ \
596 bool __changed = (if_old->field != if_new->field); \
597 if_old->field = if_new->field; \
601 if (UPDATE(metric) || UPDATE(proto_ip.no_defaultroute)) {
602 interface_ip_set_enabled(&if_old->config_ip, false);
603 interface_ip_set_enabled(&if_old->config_ip, if_new->config_ip.enabled);
604 interface_ip_set_enabled(&if_old->proto_ip, false);
605 interface_ip_set_enabled(&if_old->proto_ip, if_new->proto_ip.enabled);
613 set_config_state(if_old, IFC_RELOAD);
620 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
621 struct vlist_node *node_old)
623 struct interface *if_old = container_of(node_old, struct interface, node);
624 struct interface *if_new = container_of(node_new, struct interface, node);
626 if (node_old && node_new) {
627 D(INTERFACE, "Update interface '%s'\n", if_new->name);
628 interface_change_config(if_old, if_new);
629 } else if (node_old) {
630 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
631 set_config_state(if_old, IFC_REMOVE);
632 } else if (node_new) {
633 D(INTERFACE, "Create interface '%s'\n", if_new->name);
634 proto_init_interface(if_new, if_new->config);
635 interface_claim_device(if_new);
636 netifd_ubus_add_interface(if_new);
642 interface_init_list(void)
644 vlist_init(&interfaces, avl_strcmp, interface_update);
645 interfaces.keep_old = true;
646 interfaces.no_delete = true;