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 interface_queue_event(iface, ev);
86 mark_interface_down(struct interface *iface)
88 interface_clear_dns(iface);
89 vlist_flush_all(&iface->proto_addr);
90 vlist_flush_all(&iface->proto_route);
91 if (iface->main_dev.dev)
92 device_release(&iface->main_dev);
93 iface->state = IFS_DOWN;
97 __interface_set_up(struct interface *iface)
101 if (iface->state != IFS_DOWN)
104 if (iface->main_dev.dev) {
105 ret = device_claim(&iface->main_dev);
110 iface->state = IFS_SETUP;
111 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
113 mark_interface_down(iface);
122 __interface_set_down(struct interface *iface, bool force)
124 interface_clear_errors(iface);
126 if (iface->state == IFS_DOWN ||
127 iface->state == IFS_TEARDOWN)
130 iface->state = IFS_TEARDOWN;
131 interface_event(iface, IFEV_DOWN);
132 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
136 interface_cb(struct device_user *dep, enum device_event ev)
138 struct interface *iface;
141 iface = container_of(dep, struct interface, main_dev);
146 case DEV_EVENT_REMOVE:
153 interface_set_available(iface, new_state);
157 interface_set_available(struct interface *iface, bool new_state)
159 if (iface->available == new_state)
162 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
163 iface->available = new_state;
166 if (iface->autostart && !config_init)
167 interface_set_up(iface);
169 __interface_set_down(iface, true);
173 interface_claim_device(struct interface *iface)
177 if (iface->proto_handler &&
178 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
179 dev = device_get(iface->ifname, true);
181 device_add_user(&iface->main_dev, dev);
187 interface_cleanup(struct interface *iface)
189 interface_clear_dns(iface);
190 interface_clear_errors(iface);
191 if (iface->main_dev.dev)
192 device_remove_user(&iface->main_dev);
193 interface_set_proto_state(iface, NULL);
197 interface_do_free(struct interface *iface)
199 interface_cleanup(iface);
201 netifd_ubus_remove_interface(iface);
202 avl_delete(&interfaces.avl, &iface->node.avl);
207 interface_do_reload(struct interface *iface)
209 interface_cleanup(iface);
211 interface_claim_device(iface);
212 proto_init_interface(iface, iface->config);
214 if (iface->autostart && !config_init)
215 interface_set_up(iface);
219 interface_handle_config_change(struct interface *iface)
221 switch(iface->config_state) {
225 interface_do_reload(iface);
228 interface_do_free(iface);
234 interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
236 struct interface *iface = state->iface;
240 if (iface->state != IFS_SETUP)
243 iface->state = IFS_UP;
244 iface->start_time = system_get_rtime();
245 interface_event(iface, IFEV_UP);
246 interface_write_resolv_conf();
249 if (iface->state == IFS_DOWN)
252 mark_interface_down(iface);
253 interface_handle_config_change(iface);
254 if (iface->autostart)
255 __interface_set_up(iface);
257 case IFPEV_LINK_LOST:
258 if (iface->state != IFS_UP)
261 iface->state = IFS_SETUP;
262 interface_event(iface, IFEV_DOWN);
267 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
270 iface->proto->free(iface->proto);
273 iface->state = IFS_DOWN;
274 iface->proto = state;
278 state->proto_event = interface_proto_cb;
279 state->iface = iface;
283 interface_init(struct interface *iface, const char *name,
284 struct blob_attr *config)
286 struct blob_attr *tb[IFACE_ATTR_MAX];
287 struct blob_attr *cur;
288 const char *proto_name = NULL;
290 strncpy(iface->name, name, sizeof(iface->name) - 1);
291 INIT_LIST_HEAD(&iface->errors);
292 INIT_LIST_HEAD(&iface->hotplug_list);
293 INIT_LIST_HEAD(&iface->proto_dns_search);
294 INIT_LIST_HEAD(&iface->proto_dns_servers);
296 iface->main_dev.cb = interface_cb;
297 iface->l3_dev = &iface->main_dev;
299 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
300 blob_data(config), blob_len(config));
302 if ((cur = tb[IFACE_ATTR_PROTO]))
303 proto_name = blobmsg_data(cur);
305 proto_attach_interface(iface, proto_name);
307 if ((cur = tb[IFACE_ATTR_AUTO]))
308 iface->autostart = blobmsg_get_bool(cur);
310 iface->autostart = true;
311 iface->config_autostart = iface->autostart;
315 interface_add(struct interface *iface, struct blob_attr *config)
317 struct blob_attr *tb[IFACE_ATTR_MAX];
318 struct blob_attr *cur;
320 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
321 blob_data(config), blob_len(config));
323 if ((cur = tb[IFACE_ATTR_IFNAME]))
324 iface->ifname = blobmsg_data(cur);
326 iface->config = config;
327 vlist_add(&interfaces, &iface->node);
331 interface_remove_link(struct interface *iface, struct device *dev)
333 struct device *mdev = iface->main_dev.dev;
335 if (mdev && mdev->hotplug_ops) {
336 mdev->hotplug_ops->del(mdev, dev);
340 device_remove_user(&iface->main_dev);
344 interface_add_link(struct interface *iface, struct device *dev)
346 struct device *mdev = iface->main_dev.dev;
348 if (mdev && mdev->hotplug_ops)
349 return mdev->hotplug_ops->add(mdev, dev);
351 if (iface->main_dev.dev)
352 interface_remove_link(iface, NULL);
354 device_add_user(&iface->main_dev, dev);
360 interface_set_up(struct interface *iface)
362 iface->autostart = true;
364 if (!iface->available) {
365 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
369 if (iface->state != IFS_DOWN)
372 return __interface_set_up(iface);
376 interface_set_down(struct interface *iface)
379 vlist_for_each_element(&interfaces, iface, node)
380 __interface_set_down(iface, false);
382 iface->autostart = false;
383 __interface_set_down(iface, false);
390 interface_start_pending(void)
392 struct interface *iface;
394 vlist_for_each_element(&interfaces, iface, node) {
395 if (iface->available && iface->autostart)
396 interface_set_up(iface);
401 set_config_state(struct interface *iface, enum interface_config_state s)
403 iface->config_state = s;
404 if (iface->state == IFS_DOWN)
405 interface_handle_config_change(iface);
407 __interface_set_down(iface, false);
411 interface_change_config(struct interface *if_old, struct interface *if_new)
413 struct blob_attr *old_config = if_old->config;
414 const char *old_ifname = if_old->ifname;
415 const struct proto_handler *proto = if_old->proto_handler;
417 interface_clear_errors(if_old);
418 if_old->config = if_new->config;
419 if (!if_old->config_autostart && if_new->config_autostart)
420 if_old->autostart = true;
422 if_old->config_autostart = if_new->config_autostart;
423 if_old->ifname = if_new->ifname;
424 if_old->proto_handler = if_new->proto_handler;
426 if (strcmp(old_ifname, if_new->ifname) != 0 ||
427 proto != if_new->proto_handler) {
428 D(INTERFACE, "Reload interface '%s' because of ifname/proto change\n",
433 if (!proto->config_params)
434 D(INTERFACE, "No config parameters for interface '%s'\n",
436 else if (!config_check_equal(old_config, if_new->config,
437 proto->config_params)) {
438 D(INTERFACE, "Reload interface '%s because of config changes\n",
446 set_config_state(if_old, IFC_RELOAD);
453 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
454 struct vlist_node *node_old)
456 struct interface *if_old = container_of(node_old, struct interface, node);
457 struct interface *if_new = container_of(node_new, struct interface, node);
459 if (node_old && node_new) {
460 D(INTERFACE, "Update interface '%s'\n", if_new->name);
461 interface_change_config(if_old, if_new);
462 } else if (node_old) {
463 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
464 set_config_state(if_old, IFC_REMOVE);
465 } else if (node_new) {
466 D(INTERFACE, "Create interface '%s'\n", if_new->name);
467 interface_claim_device(if_new);
468 proto_init_interface(if_new, if_new->config);
469 interface_ip_init(if_new);
470 netifd_ubus_add_interface(if_new);
476 interface_init_list(void)
478 vlist_init(&interfaces, avl_strcmp, interface_update,
479 struct interface, node, name);
480 interfaces.keep_old = true;
481 interfaces.no_delete = true;