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 vlist_flush_all(&iface->proto_addr);
89 vlist_flush_all(&iface->proto_route);
90 if (iface->main_dev.dev)
91 device_release(&iface->main_dev);
92 iface->state = IFS_DOWN;
96 __interface_set_up(struct interface *iface)
100 if (iface->state != IFS_DOWN)
103 if (iface->main_dev.dev) {
104 ret = device_claim(&iface->main_dev);
109 iface->state = IFS_SETUP;
110 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
112 mark_interface_down(iface);
121 __interface_set_down(struct interface *iface, bool force)
123 interface_clear_errors(iface);
125 if (iface->state == IFS_DOWN ||
126 iface->state == IFS_TEARDOWN)
129 iface->state = IFS_TEARDOWN;
130 interface_event(iface, IFEV_DOWN);
131 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
135 interface_cb(struct device_user *dep, enum device_event ev)
137 struct interface *iface;
140 iface = container_of(dep, struct interface, main_dev);
145 case DEV_EVENT_REMOVE:
152 interface_set_available(iface, new_state);
156 interface_set_available(struct interface *iface, bool new_state)
158 if (iface->available == new_state)
161 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
162 iface->available = new_state;
165 if (iface->autostart && !config_init)
166 interface_set_up(iface);
168 __interface_set_down(iface, true);
172 interface_claim_device(struct interface *iface)
176 if (iface->proto_handler &&
177 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
178 dev = device_get(iface->ifname, true);
180 device_add_user(&iface->main_dev, dev);
186 interface_cleanup(struct interface *iface)
188 interface_clear_errors(iface);
189 if (iface->main_dev.dev)
190 device_remove_user(&iface->main_dev);
191 interface_set_proto_state(iface, NULL);
195 interface_do_free(struct interface *iface)
197 interface_cleanup(iface);
199 netifd_ubus_remove_interface(iface);
200 avl_delete(&interfaces.avl, &iface->node.avl);
205 interface_do_reload(struct interface *iface)
207 interface_cleanup(iface);
209 interface_claim_device(iface);
210 proto_init_interface(iface, iface->config);
212 if (iface->autostart && !config_init)
213 interface_set_up(iface);
217 interface_handle_config_change(struct interface *iface)
219 switch(iface->config_state) {
223 interface_do_reload(iface);
226 interface_do_free(iface);
232 interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
234 struct interface *iface = state->iface;
238 if (iface->state != IFS_SETUP)
241 iface->state = IFS_UP;
242 iface->start_time = system_get_rtime();
243 interface_event(iface, IFEV_UP);
246 if (iface->state == IFS_DOWN)
249 mark_interface_down(iface);
250 interface_handle_config_change(iface);
252 case IFPEV_LINK_LOST:
253 if (iface->state != IFS_UP)
256 iface->state = IFS_SETUP;
257 interface_event(iface, IFEV_DOWN);
262 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
265 iface->proto->free(iface->proto);
268 iface->state = IFS_DOWN;
269 iface->proto = state;
273 state->proto_event = interface_proto_cb;
274 state->iface = iface;
278 interface_init(struct interface *iface, const char *name,
279 struct blob_attr *config)
281 struct blob_attr *tb[IFACE_ATTR_MAX];
282 struct blob_attr *cur;
283 const char *proto_name = NULL;
285 strncpy(iface->name, name, sizeof(iface->name) - 1);
286 INIT_LIST_HEAD(&iface->errors);
287 INIT_LIST_HEAD(&iface->hotplug_list);
289 iface->main_dev.cb = interface_cb;
290 iface->l3_dev = &iface->main_dev;
292 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
293 blob_data(config), blob_len(config));
295 if ((cur = tb[IFACE_ATTR_PROTO]))
296 proto_name = blobmsg_data(cur);
298 proto_attach_interface(iface, proto_name);
300 if ((cur = tb[IFACE_ATTR_AUTO]))
301 iface->autostart = blobmsg_get_bool(cur);
303 iface->autostart = true;
304 iface->config_autostart = iface->autostart;
308 interface_add(struct interface *iface, struct blob_attr *config)
310 struct blob_attr *tb[IFACE_ATTR_MAX];
311 struct blob_attr *cur;
313 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
314 blob_data(config), blob_len(config));
316 if ((cur = tb[IFACE_ATTR_IFNAME]))
317 iface->ifname = blobmsg_data(cur);
319 iface->config = config;
320 vlist_add(&interfaces, &iface->node);
324 interface_remove_link(struct interface *iface, struct device *dev)
326 struct device *mdev = iface->main_dev.dev;
328 if (mdev && mdev->hotplug_ops) {
329 mdev->hotplug_ops->del(mdev, dev);
333 device_remove_user(&iface->main_dev);
337 interface_add_link(struct interface *iface, struct device *dev)
339 struct device *mdev = iface->main_dev.dev;
341 if (mdev && mdev->hotplug_ops)
342 return mdev->hotplug_ops->add(mdev, dev);
344 if (iface->main_dev.dev)
345 interface_remove_link(iface, NULL);
347 device_add_user(&iface->main_dev, dev);
353 interface_set_up(struct interface *iface)
355 iface->autostart = true;
357 if (!iface->available) {
358 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
362 if (iface->state != IFS_DOWN)
365 return __interface_set_up(iface);
369 interface_set_down(struct interface *iface)
372 vlist_for_each_element(&interfaces, iface, node)
373 __interface_set_down(iface, false);
375 iface->autostart = false;
376 __interface_set_down(iface, false);
383 interface_start_pending(void)
385 struct interface *iface;
387 vlist_for_each_element(&interfaces, iface, node) {
388 if (iface->available && iface->autostart)
389 interface_set_up(iface);
394 set_config_state(struct interface *iface, enum interface_config_state s)
396 iface->config_state = s;
397 if (iface->state == IFS_DOWN)
398 interface_handle_config_change(iface);
400 __interface_set_down(iface, false);
404 interface_change_config(struct interface *if_old, struct interface *if_new)
406 struct blob_attr *old_config = if_old->config;
407 const char *old_ifname = if_old->ifname;
408 const struct proto_handler *proto = if_old->proto_handler;
410 interface_clear_errors(if_old);
411 if_old->config = if_new->config;
412 if (!if_old->config_autostart && if_new->config_autostart)
413 if_old->autostart = true;
415 if_old->config_autostart = if_new->config_autostart;
416 if_old->ifname = if_new->ifname;
417 if_old->proto_handler = if_new->proto_handler;
419 if (strcmp(old_ifname, if_new->ifname) != 0 ||
420 proto != if_new->proto_handler) {
421 D(INTERFACE, "Reload interface '%s' because of ifname/proto change\n",
426 if (!proto->config_params)
427 D(INTERFACE, "No config parameters for interface '%s'\n",
429 else if (!config_check_equal(old_config, if_new->config,
430 proto->config_params)) {
431 D(INTERFACE, "Reload interface '%s because of config changes\n",
439 set_config_state(if_old, IFC_RELOAD);
446 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
447 struct vlist_node *node_old)
449 struct interface *if_old = container_of(node_old, struct interface, node);
450 struct interface *if_new = container_of(node_new, struct interface, node);
452 if (node_old && node_new) {
453 D(INTERFACE, "Update interface '%s'\n", if_new->name);
454 interface_change_config(if_old, if_new);
455 } else if (node_old) {
456 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
457 set_config_state(if_old, IFC_REMOVE);
458 } else if (node_new) {
459 D(INTERFACE, "Create interface '%s'\n", if_new->name);
460 interface_claim_device(if_new);
461 proto_init_interface(if_new, if_new->config);
462 interface_ip_init(if_new);
463 netifd_ubus_add_interface(if_new);
469 interface_init_list(void)
471 vlist_init(&interfaces, avl_strcmp, interface_update,
472 struct interface, node, name);
473 interfaces.keep_old = true;
474 interfaces.no_delete = true;