8 #include "interface-ip.h"
14 struct vlist_tree interfaces;
23 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
24 [IFACE_ATTR_PROTO] = { .name = "proto", .type = BLOBMSG_TYPE_STRING },
25 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
26 [IFACE_ATTR_AUTO] = { .name = "auto", .type = BLOBMSG_TYPE_BOOL },
29 const struct config_param_list interface_attr_list = {
30 .n_params = IFACE_ATTR_MAX,
31 .params = iface_attrs,
35 interface_clear_errors(struct interface *iface)
37 struct interface_error *error, *tmp;
39 list_for_each_entry_safe(error, tmp, &iface->errors, list) {
40 list_del(&error->list);
45 void interface_add_error(struct interface *iface, const char *subsystem,
46 const char *code, const char **data, int n_data)
48 struct interface_error *error;
54 len = n_data * sizeof(char *);
55 datalen = alloca(len);
56 for (i = 0; i < n_data; i++) {
57 datalen[i] = strlen(data[i]) + 1;
62 error = calloc(1, sizeof(*error) + sizeof(char *) + len);
66 list_add_tail(&error->list, &iface->errors);
67 error->subsystem = subsystem;
70 dest = (char *) &error->data[n_data + 1];
71 for (i = 0; i < n_data; i++) {
72 error->data[i] = dest;
73 memcpy(dest, data[i], datalen[i]);
76 error->data[n_data] = NULL;
80 interface_event(struct interface *iface, enum interface_event ev)
82 struct interface_user *dep, *tmp;
84 list_for_each_entry_safe(dep, tmp, &iface->users, list)
85 dep->cb(dep, IFEV_UP);
87 interface_queue_event(iface, ev);
91 interface_flush_state(struct interface *iface)
93 interface_ip_flush(&iface->proto_ip);
94 if (iface->main_dev.dev)
95 device_release(&iface->main_dev);
96 if (iface->l3_dev != &iface->main_dev && iface->l3_dev->dev)
97 device_release(iface->l3_dev);
101 mark_interface_down(struct interface *iface)
103 if (iface->state == IFS_UP)
104 interface_event(iface, IFEV_DOWN);
105 interface_flush_state(iface);
106 iface->state = IFS_DOWN;
110 __interface_set_down(struct interface *iface, bool force)
112 interface_clear_errors(iface);
114 if (iface->state == IFS_DOWN ||
115 iface->state == IFS_TEARDOWN)
118 if (iface->state == IFS_UP)
119 interface_event(iface, IFEV_DOWN);
120 iface->state = IFS_TEARDOWN;
121 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
123 interface_flush_state(iface);
127 interface_cb(struct device_user *dep, enum device_event ev)
129 struct interface *iface;
132 iface = container_of(dep, struct interface, main_dev);
137 case DEV_EVENT_REMOVE:
144 interface_set_available(iface, new_state);
148 interface_set_available(struct interface *iface, bool new_state)
150 if (iface->available == new_state)
153 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
154 iface->available = new_state;
157 if (iface->autostart && !config_init)
158 interface_set_up(iface);
160 __interface_set_down(iface, true);
164 interface_add_user(struct interface_user *dep, struct interface *iface)
167 list_add(&dep->list, &iface->users);
168 if (iface->state == IFS_UP)
169 dep->cb(dep, IFEV_UP);
173 interface_remove_user(struct interface_user *dep)
175 list_del_init(&dep->list);
180 interface_claim_device(struct interface *iface)
184 if (iface->ifname && iface->proto_handler &&
185 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
186 dev = device_get(iface->ifname, true);
188 device_add_user(&iface->main_dev, dev);
190 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
191 interface_set_available(iface, true);
196 interface_cleanup(struct interface *iface)
198 struct interface_user *dep, *tmp;
200 list_for_each_entry_safe(dep, tmp, &iface->users, list)
201 interface_remove_user(dep);
203 interface_ip_flush(&iface->config_ip);
204 interface_flush_state(iface);
205 interface_clear_errors(iface);
206 if (iface->main_dev.dev)
207 device_remove_user(&iface->main_dev);
208 iface->l3_dev = &iface->main_dev;
209 interface_set_proto_state(iface, NULL);
213 interface_do_free(struct interface *iface)
215 interface_cleanup(iface);
217 netifd_ubus_remove_interface(iface);
218 avl_delete(&interfaces.avl, &iface->node.avl);
223 interface_do_reload(struct interface *iface)
225 interface_cleanup(iface);
226 proto_init_interface(iface, iface->config);
227 interface_claim_device(iface);
231 interface_handle_config_change(struct interface *iface)
233 switch(iface->config_state) {
237 interface_do_reload(iface);
240 interface_do_free(iface);
243 if (iface->autostart && iface->available)
244 interface_set_up(iface);
248 interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
250 struct interface *iface = state->iface;
254 if (iface->state != IFS_SETUP)
257 interface_ip_set_enabled(&iface->config_ip, true);
258 system_flush_routes();
259 iface->state = IFS_UP;
260 iface->start_time = system_get_rtime();
261 interface_event(iface, IFEV_UP);
262 interface_write_resolv_conf();
263 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
266 if (iface->state == IFS_DOWN)
269 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
270 interface_ip_set_enabled(&iface->config_ip, false);
271 system_flush_routes();
272 mark_interface_down(iface);
273 interface_handle_config_change(iface);
275 case IFPEV_LINK_LOST:
276 if (iface->state != IFS_UP)
279 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
280 if (iface->state == IFS_UP)
281 interface_event(iface, IFEV_DOWN);
282 iface->state = IFS_SETUP;
287 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
290 iface->proto->free(iface->proto);
293 iface->state = IFS_DOWN;
294 iface->proto = state;
298 state->proto_event = interface_proto_cb;
299 state->iface = iface;
303 interface_init(struct interface *iface, const char *name,
304 struct blob_attr *config)
306 struct blob_attr *tb[IFACE_ATTR_MAX];
307 struct blob_attr *cur;
308 const char *proto_name = NULL;
310 strncpy(iface->name, name, sizeof(iface->name) - 1);
311 INIT_LIST_HEAD(&iface->errors);
312 INIT_LIST_HEAD(&iface->users);
313 INIT_LIST_HEAD(&iface->hotplug_list);
314 interface_ip_init(&iface->proto_ip, iface);
315 interface_ip_init(&iface->config_ip, iface);
316 iface->config_ip.enabled = false;
318 iface->main_dev.cb = interface_cb;
319 iface->l3_dev = &iface->main_dev;
321 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
322 blob_data(config), blob_len(config));
324 if ((cur = tb[IFACE_ATTR_PROTO]))
325 proto_name = blobmsg_data(cur);
327 proto_attach_interface(iface, proto_name);
329 if ((cur = tb[IFACE_ATTR_AUTO]))
330 iface->autostart = blobmsg_get_bool(cur);
332 iface->autostart = true;
333 iface->config_autostart = iface->autostart;
337 interface_add(struct interface *iface, struct blob_attr *config)
339 struct blob_attr *tb[IFACE_ATTR_MAX];
340 struct blob_attr *cur;
342 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
343 blob_data(config), blob_len(config));
345 if ((cur = tb[IFACE_ATTR_IFNAME]))
346 iface->ifname = blobmsg_data(cur);
348 iface->config = config;
349 vlist_add(&interfaces, &iface->node);
353 interface_remove_link(struct interface *iface, struct device *dev)
355 struct device *mdev = iface->main_dev.dev;
357 if (mdev && mdev->hotplug_ops) {
358 mdev->hotplug_ops->del(mdev, dev);
362 device_remove_user(&iface->main_dev);
366 interface_add_link(struct interface *iface, struct device *dev)
368 struct device *mdev = iface->main_dev.dev;
370 if (mdev && mdev->hotplug_ops)
371 return mdev->hotplug_ops->add(mdev, dev);
373 if (iface->main_dev.dev)
374 interface_remove_link(iface, NULL);
376 device_add_user(&iface->main_dev, dev);
382 interface_set_up(struct interface *iface)
386 iface->autostart = true;
388 if (iface->state != IFS_DOWN)
391 interface_clear_errors(iface);
392 if (!iface->available) {
393 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
397 if (iface->main_dev.dev) {
398 ret = device_claim(&iface->main_dev);
403 iface->state = IFS_SETUP;
404 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
406 mark_interface_down(iface);
414 interface_set_down(struct interface *iface)
417 vlist_for_each_element(&interfaces, iface, node)
418 __interface_set_down(iface, false);
420 iface->autostart = false;
421 __interface_set_down(iface, false);
428 interface_start_pending(void)
430 struct interface *iface;
432 vlist_for_each_element(&interfaces, iface, node) {
433 if (iface->available && iface->autostart)
434 interface_set_up(iface);
439 set_config_state(struct interface *iface, enum interface_config_state s)
441 iface->config_state = s;
442 if (iface->state == IFS_DOWN)
443 interface_handle_config_change(iface);
445 __interface_set_down(iface, false);
449 interface_update_start(struct interface *iface)
451 interface_ip_update_start(&iface->proto_ip);
455 interface_update_complete(struct interface *iface)
457 struct device_route *route;
459 interface_ip_update_complete(&iface->proto_ip);
460 vlist_for_each_element(&iface->config_ip.route, route, node) {
461 if (iface->l3_dev->dev) {
462 system_add_route(iface->l3_dev->dev, route);
463 route->enabled = true;
469 interface_change_config(struct interface *if_old, struct interface *if_new)
471 struct blob_attr *old_config = if_old->config;
472 const char *old_ifname = if_old->ifname;
473 const struct proto_handler *proto = if_old->proto_handler;
475 interface_clear_errors(if_old);
476 if_old->config = if_new->config;
477 if (!if_old->config_autostart && if_new->config_autostart)
478 if_old->autostart = true;
480 if_old->config_autostart = if_new->config_autostart;
481 if_old->ifname = if_new->ifname;
482 if_old->proto_handler = if_new->proto_handler;
484 if ((!!old_ifname != !!if_new->ifname) ||
485 (old_ifname && strcmp(old_ifname, if_new->ifname) != 0) ||
486 proto != if_new->proto_handler) {
487 D(INTERFACE, "Reload interface '%s' because of ifname/proto change\n",
492 if (!proto->config_params)
493 D(INTERFACE, "No config parameters for interface '%s'\n",
495 else if (!config_check_equal(old_config, if_new->config,
496 proto->config_params)) {
497 D(INTERFACE, "Reload interface '%s because of config changes\n",
505 set_config_state(if_old, IFC_RELOAD);
512 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
513 struct vlist_node *node_old)
515 struct interface *if_old = container_of(node_old, struct interface, node);
516 struct interface *if_new = container_of(node_new, struct interface, node);
518 if (node_old && node_new) {
519 D(INTERFACE, "Update interface '%s'\n", if_new->name);
520 interface_change_config(if_old, if_new);
521 } else if (node_old) {
522 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
523 set_config_state(if_old, IFC_REMOVE);
524 } else if (node_new) {
525 D(INTERFACE, "Create interface '%s'\n", if_new->name);
526 proto_init_interface(if_new, if_new->config);
527 interface_claim_device(if_new);
528 netifd_ubus_add_interface(if_new);
534 interface_init_list(void)
536 vlist_init(&interfaces, avl_strcmp, interface_update,
537 struct interface, node, name);
538 interfaces.keep_old = true;
539 interfaces.no_delete = true;