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 interface_flush_state(iface);
104 iface->state = IFS_DOWN;
108 __interface_set_down(struct interface *iface, bool force)
110 interface_clear_errors(iface);
112 if (iface->state == IFS_DOWN ||
113 iface->state == IFS_TEARDOWN)
116 iface->state = IFS_TEARDOWN;
117 interface_event(iface, IFEV_DOWN);
118 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
120 interface_flush_state(iface);
124 interface_cb(struct device_user *dep, enum device_event ev)
126 struct interface *iface;
129 iface = container_of(dep, struct interface, main_dev);
134 case DEV_EVENT_REMOVE:
141 interface_set_available(iface, new_state);
145 interface_set_available(struct interface *iface, bool new_state)
147 if (iface->available == new_state)
150 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
151 iface->available = new_state;
154 if (iface->autostart && !config_init)
155 interface_set_up(iface);
157 __interface_set_down(iface, true);
161 interface_add_user(struct interface_user *dep, struct interface *iface)
164 list_add(&dep->list, &iface->users);
165 if (iface->state == IFS_UP)
166 dep->cb(dep, IFEV_UP);
170 interface_remove_user(struct interface_user *dep)
172 list_del_init(&dep->list);
177 interface_claim_device(struct interface *iface)
181 if (iface->ifname && iface->proto_handler &&
182 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
183 dev = device_get(iface->ifname, true);
185 device_add_user(&iface->main_dev, dev);
191 interface_cleanup(struct interface *iface)
193 struct interface_user *dep, *tmp;
195 list_for_each_entry_safe(dep, tmp, &iface->users, list)
196 interface_remove_user(dep);
198 interface_ip_flush(&iface->config_ip);
199 interface_flush_state(iface);
200 interface_clear_errors(iface);
201 if (iface->main_dev.dev)
202 device_remove_user(&iface->main_dev);
203 iface->l3_dev = &iface->main_dev;
204 interface_set_proto_state(iface, NULL);
208 interface_do_free(struct interface *iface)
210 interface_cleanup(iface);
212 netifd_ubus_remove_interface(iface);
213 avl_delete(&interfaces.avl, &iface->node.avl);
218 interface_do_reload(struct interface *iface)
220 interface_cleanup(iface);
222 interface_claim_device(iface);
223 proto_init_interface(iface, iface->config);
227 interface_handle_config_change(struct interface *iface)
229 switch(iface->config_state) {
233 interface_do_reload(iface);
236 interface_do_free(iface);
239 if (iface->autostart && iface->available)
240 interface_set_up(iface);
244 interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
246 struct interface *iface = state->iface;
250 if (iface->state != IFS_SETUP)
253 interface_ip_set_enabled(&iface->config_ip, true);
254 system_flush_routes();
255 iface->state = IFS_UP;
256 iface->start_time = system_get_rtime();
257 interface_event(iface, IFEV_UP);
258 interface_write_resolv_conf();
259 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
262 if (iface->state == IFS_DOWN)
265 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
266 interface_ip_set_enabled(&iface->config_ip, false);
267 system_flush_routes();
268 mark_interface_down(iface);
269 interface_handle_config_change(iface);
271 case IFPEV_LINK_LOST:
272 if (iface->state != IFS_UP)
275 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
276 iface->state = IFS_SETUP;
277 interface_event(iface, IFEV_DOWN);
282 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
285 iface->proto->free(iface->proto);
288 iface->state = IFS_DOWN;
289 iface->proto = state;
293 state->proto_event = interface_proto_cb;
294 state->iface = iface;
298 interface_init(struct interface *iface, const char *name,
299 struct blob_attr *config)
301 struct blob_attr *tb[IFACE_ATTR_MAX];
302 struct blob_attr *cur;
303 const char *proto_name = NULL;
305 strncpy(iface->name, name, sizeof(iface->name) - 1);
306 INIT_LIST_HEAD(&iface->errors);
307 INIT_LIST_HEAD(&iface->users);
308 INIT_LIST_HEAD(&iface->hotplug_list);
309 interface_ip_init(&iface->proto_ip, iface);
310 interface_ip_init(&iface->config_ip, iface);
311 iface->config_ip.enabled = false;
313 iface->main_dev.cb = interface_cb;
314 iface->l3_dev = &iface->main_dev;
316 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
317 blob_data(config), blob_len(config));
319 if ((cur = tb[IFACE_ATTR_PROTO]))
320 proto_name = blobmsg_data(cur);
322 proto_attach_interface(iface, proto_name);
324 if ((cur = tb[IFACE_ATTR_AUTO]))
325 iface->autostart = blobmsg_get_bool(cur);
327 iface->autostart = true;
328 iface->config_autostart = iface->autostart;
332 interface_add(struct interface *iface, struct blob_attr *config)
334 struct blob_attr *tb[IFACE_ATTR_MAX];
335 struct blob_attr *cur;
337 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
338 blob_data(config), blob_len(config));
340 if ((cur = tb[IFACE_ATTR_IFNAME]))
341 iface->ifname = blobmsg_data(cur);
343 iface->config = config;
344 vlist_add(&interfaces, &iface->node);
348 interface_remove_link(struct interface *iface, struct device *dev)
350 struct device *mdev = iface->main_dev.dev;
352 if (mdev && mdev->hotplug_ops) {
353 mdev->hotplug_ops->del(mdev, dev);
357 device_remove_user(&iface->main_dev);
361 interface_add_link(struct interface *iface, struct device *dev)
363 struct device *mdev = iface->main_dev.dev;
365 if (mdev && mdev->hotplug_ops)
366 return mdev->hotplug_ops->add(mdev, dev);
368 if (iface->main_dev.dev)
369 interface_remove_link(iface, NULL);
371 device_add_user(&iface->main_dev, dev);
377 interface_set_up(struct interface *iface)
381 iface->autostart = true;
383 if (iface->state != IFS_DOWN)
386 interface_clear_errors(iface);
387 if (!iface->available) {
388 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
392 if (iface->main_dev.dev) {
393 ret = device_claim(&iface->main_dev);
398 iface->state = IFS_SETUP;
399 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
401 mark_interface_down(iface);
409 interface_set_down(struct interface *iface)
412 vlist_for_each_element(&interfaces, iface, node)
413 __interface_set_down(iface, false);
415 iface->autostart = false;
416 __interface_set_down(iface, false);
423 interface_start_pending(void)
425 struct interface *iface;
427 vlist_for_each_element(&interfaces, iface, node) {
428 if (iface->available && iface->autostart)
429 interface_set_up(iface);
434 set_config_state(struct interface *iface, enum interface_config_state s)
436 iface->config_state = s;
437 if (iface->state == IFS_DOWN)
438 interface_handle_config_change(iface);
440 __interface_set_down(iface, false);
444 interface_update_start(struct interface *iface)
446 interface_ip_update_start(&iface->proto_ip);
450 interface_update_complete(struct interface *iface)
452 struct device_route *route;
454 interface_ip_update_complete(&iface->proto_ip);
455 vlist_for_each_element(&iface->config_ip.route, route, node) {
456 if (iface->l3_dev->dev) {
457 system_add_route(iface->l3_dev->dev, route);
458 route->enabled = true;
464 interface_change_config(struct interface *if_old, struct interface *if_new)
466 struct blob_attr *old_config = if_old->config;
467 const char *old_ifname = if_old->ifname;
468 const struct proto_handler *proto = if_old->proto_handler;
470 interface_clear_errors(if_old);
471 if_old->config = if_new->config;
472 if (!if_old->config_autostart && if_new->config_autostart)
473 if_old->autostart = true;
475 if_old->config_autostart = if_new->config_autostart;
476 if_old->ifname = if_new->ifname;
477 if_old->proto_handler = if_new->proto_handler;
479 if (strcmp(old_ifname, if_new->ifname) != 0 ||
480 proto != if_new->proto_handler) {
481 D(INTERFACE, "Reload interface '%s' because of ifname/proto change\n",
486 if (!proto->config_params)
487 D(INTERFACE, "No config parameters for interface '%s'\n",
489 else if (!config_check_equal(old_config, if_new->config,
490 proto->config_params)) {
491 D(INTERFACE, "Reload interface '%s because of config changes\n",
499 set_config_state(if_old, IFC_RELOAD);
506 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
507 struct vlist_node *node_old)
509 struct interface *if_old = container_of(node_old, struct interface, node);
510 struct interface *if_new = container_of(node_new, struct interface, node);
512 if (node_old && node_new) {
513 D(INTERFACE, "Update interface '%s'\n", if_new->name);
514 interface_change_config(if_old, if_new);
515 } else if (node_old) {
516 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
517 set_config_state(if_old, IFC_REMOVE);
518 } else if (node_new) {
519 D(INTERFACE, "Create interface '%s'\n", if_new->name);
520 interface_claim_device(if_new);
521 proto_init_interface(if_new, if_new->config);
522 netifd_ubus_add_interface(if_new);
528 interface_init_list(void)
530 vlist_init(&interfaces, avl_strcmp, interface_update,
531 struct interface, node, name);
532 interfaces.keep_old = true;
533 interfaces.no_delete = true;