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 mark_interface_down(struct interface *iface)
93 interface_clear_dns(iface);
94 vlist_flush_all(&iface->proto_addr);
95 vlist_flush_all(&iface->proto_route);
96 if (iface->main_dev.dev)
97 device_release(&iface->main_dev);
98 iface->state = IFS_DOWN;
102 __interface_set_up(struct interface *iface)
106 if (iface->state != IFS_DOWN)
109 if (iface->main_dev.dev) {
110 ret = device_claim(&iface->main_dev);
115 iface->state = IFS_SETUP;
116 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
118 mark_interface_down(iface);
126 __interface_set_down(struct interface *iface, bool force)
128 interface_clear_errors(iface);
130 if (iface->state == IFS_DOWN ||
131 iface->state == IFS_TEARDOWN)
134 iface->state = IFS_TEARDOWN;
135 interface_event(iface, IFEV_DOWN);
136 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
140 interface_cb(struct device_user *dep, enum device_event ev)
142 struct interface *iface;
145 iface = container_of(dep, struct interface, main_dev);
150 case DEV_EVENT_REMOVE:
157 interface_set_available(iface, new_state);
161 interface_set_available(struct interface *iface, bool new_state)
163 if (iface->available == new_state)
166 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
167 iface->available = new_state;
170 if (iface->autostart && !config_init)
171 interface_set_up(iface);
173 __interface_set_down(iface, true);
177 interface_add_user(struct interface_user *dep, struct interface *iface)
180 list_add(&dep->list, &iface->users);
181 if (iface->state == IFS_UP)
182 dep->cb(dep, IFEV_UP);
186 interface_remove_user(struct interface_user *dep)
188 list_del_init(&dep->list);
193 interface_claim_device(struct interface *iface)
197 if (iface->proto_handler &&
198 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
199 dev = device_get(iface->ifname, true);
201 device_add_user(&iface->main_dev, dev);
207 interface_cleanup(struct interface *iface)
209 struct interface_user *dep, *tmp;
211 list_for_each_entry_safe(dep, tmp, &iface->users, list)
212 interface_remove_user(dep);
214 interface_clear_dns(iface);
215 interface_clear_errors(iface);
216 if (iface->main_dev.dev)
217 device_remove_user(&iface->main_dev);
218 interface_set_proto_state(iface, NULL);
222 interface_do_free(struct interface *iface)
224 interface_cleanup(iface);
226 netifd_ubus_remove_interface(iface);
227 avl_delete(&interfaces.avl, &iface->node.avl);
232 interface_do_reload(struct interface *iface)
234 interface_cleanup(iface);
236 interface_claim_device(iface);
237 proto_init_interface(iface, iface->config);
239 if (iface->autostart && !config_init)
240 interface_set_up(iface);
244 interface_handle_config_change(struct interface *iface)
246 switch(iface->config_state) {
250 interface_do_reload(iface);
253 interface_do_free(iface);
259 interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
261 struct interface *iface = state->iface;
265 if (iface->state != IFS_SETUP)
268 system_flush_routes();
269 iface->state = IFS_UP;
270 iface->start_time = system_get_rtime();
271 interface_event(iface, IFEV_UP);
272 interface_write_resolv_conf();
275 if (iface->state == IFS_DOWN)
278 system_flush_routes();
279 mark_interface_down(iface);
280 interface_handle_config_change(iface);
281 if (iface->autostart)
282 __interface_set_up(iface);
284 case IFPEV_LINK_LOST:
285 if (iface->state != IFS_UP)
288 iface->state = IFS_SETUP;
289 interface_event(iface, IFEV_DOWN);
294 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
297 iface->proto->free(iface->proto);
300 iface->state = IFS_DOWN;
301 iface->proto = state;
305 state->proto_event = interface_proto_cb;
306 state->iface = iface;
310 interface_init(struct interface *iface, const char *name,
311 struct blob_attr *config)
313 struct blob_attr *tb[IFACE_ATTR_MAX];
314 struct blob_attr *cur;
315 const char *proto_name = NULL;
317 strncpy(iface->name, name, sizeof(iface->name) - 1);
318 INIT_LIST_HEAD(&iface->errors);
319 INIT_LIST_HEAD(&iface->users);
320 INIT_LIST_HEAD(&iface->hotplug_list);
321 INIT_LIST_HEAD(&iface->proto_dns_search);
322 INIT_LIST_HEAD(&iface->proto_dns_servers);
324 iface->main_dev.cb = interface_cb;
325 iface->l3_dev = &iface->main_dev;
327 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
328 blob_data(config), blob_len(config));
330 if ((cur = tb[IFACE_ATTR_PROTO]))
331 proto_name = blobmsg_data(cur);
333 proto_attach_interface(iface, proto_name);
335 if ((cur = tb[IFACE_ATTR_AUTO]))
336 iface->autostart = blobmsg_get_bool(cur);
338 iface->autostart = true;
339 iface->config_autostart = iface->autostart;
343 interface_add(struct interface *iface, struct blob_attr *config)
345 struct blob_attr *tb[IFACE_ATTR_MAX];
346 struct blob_attr *cur;
348 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
349 blob_data(config), blob_len(config));
351 if ((cur = tb[IFACE_ATTR_IFNAME]))
352 iface->ifname = blobmsg_data(cur);
354 iface->config = config;
355 vlist_add(&interfaces, &iface->node);
359 interface_remove_link(struct interface *iface, struct device *dev)
361 struct device *mdev = iface->main_dev.dev;
363 if (mdev && mdev->hotplug_ops) {
364 mdev->hotplug_ops->del(mdev, dev);
368 device_remove_user(&iface->main_dev);
372 interface_add_link(struct interface *iface, struct device *dev)
374 struct device *mdev = iface->main_dev.dev;
376 if (mdev && mdev->hotplug_ops)
377 return mdev->hotplug_ops->add(mdev, dev);
379 if (iface->main_dev.dev)
380 interface_remove_link(iface, NULL);
382 device_add_user(&iface->main_dev, dev);
388 interface_set_up(struct interface *iface)
390 iface->autostart = true;
392 if (iface->state != IFS_DOWN)
395 interface_clear_errors(iface);
396 if (!iface->available) {
397 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
401 return __interface_set_up(iface);
405 interface_set_down(struct interface *iface)
408 vlist_for_each_element(&interfaces, iface, node)
409 __interface_set_down(iface, false);
411 iface->autostart = false;
412 __interface_set_down(iface, false);
419 interface_start_pending(void)
421 struct interface *iface;
423 vlist_for_each_element(&interfaces, iface, node) {
424 if (iface->available && iface->autostart)
425 interface_set_up(iface);
430 set_config_state(struct interface *iface, enum interface_config_state s)
432 iface->config_state = s;
433 if (iface->state == IFS_DOWN)
434 interface_handle_config_change(iface);
436 __interface_set_down(iface, false);
440 interface_change_config(struct interface *if_old, struct interface *if_new)
442 struct blob_attr *old_config = if_old->config;
443 const char *old_ifname = if_old->ifname;
444 const struct proto_handler *proto = if_old->proto_handler;
446 interface_clear_errors(if_old);
447 if_old->config = if_new->config;
448 if (!if_old->config_autostart && if_new->config_autostart)
449 if_old->autostart = true;
451 if_old->config_autostart = if_new->config_autostart;
452 if_old->ifname = if_new->ifname;
453 if_old->proto_handler = if_new->proto_handler;
455 if (strcmp(old_ifname, if_new->ifname) != 0 ||
456 proto != if_new->proto_handler) {
457 D(INTERFACE, "Reload interface '%s' because of ifname/proto change\n",
462 if (!proto->config_params)
463 D(INTERFACE, "No config parameters for interface '%s'\n",
465 else if (!config_check_equal(old_config, if_new->config,
466 proto->config_params)) {
467 D(INTERFACE, "Reload interface '%s because of config changes\n",
475 set_config_state(if_old, IFC_RELOAD);
482 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
483 struct vlist_node *node_old)
485 struct interface *if_old = container_of(node_old, struct interface, node);
486 struct interface *if_new = container_of(node_new, struct interface, node);
488 if (node_old && node_new) {
489 D(INTERFACE, "Update interface '%s'\n", if_new->name);
490 interface_change_config(if_old, if_new);
491 } else if (node_old) {
492 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
493 set_config_state(if_old, IFC_REMOVE);
494 } else if (node_new) {
495 D(INTERFACE, "Create interface '%s'\n", if_new->name);
496 interface_claim_device(if_new);
497 proto_init_interface(if_new, if_new->config);
498 interface_ip_init(if_new);
499 netifd_ubus_add_interface(if_new);
505 interface_init_list(void)
507 vlist_init(&interfaces, avl_strcmp, interface_update,
508 struct interface, node, name);
509 interfaces.keep_old = true;
510 interfaces.no_delete = true;