8 #include "interface-ip.h"
14 struct vlist_tree interfaces;
20 IFACE_ATTR_DEFAULTROUTE,
25 static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
26 [IFACE_ATTR_PROTO] = { .name = "proto", .type = BLOBMSG_TYPE_STRING },
27 [IFACE_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
28 [IFACE_ATTR_AUTO] = { .name = "auto", .type = BLOBMSG_TYPE_BOOL },
29 [IFACE_ATTR_DEFAULTROUTE] = { .name = "defaultroute", .type = BLOBMSG_TYPE_BOOL },
30 [IFACE_ATTR_METRIC] = { .name = "metric", .type = BLOBMSG_TYPE_INT32 },
33 const struct config_param_list interface_attr_list = {
34 .n_params = IFACE_ATTR_MAX,
35 .params = iface_attrs,
39 interface_clear_errors(struct interface *iface)
41 struct interface_error *error, *tmp;
43 list_for_each_entry_safe(error, tmp, &iface->errors, list) {
44 list_del(&error->list);
49 void interface_add_error(struct interface *iface, const char *subsystem,
50 const char *code, const char **data, int n_data)
52 struct interface_error *error;
58 len = n_data * sizeof(char *);
59 datalen = alloca(len);
60 for (i = 0; i < n_data; i++) {
61 datalen[i] = strlen(data[i]) + 1;
66 error = calloc(1, sizeof(*error) + sizeof(char *) + len);
70 list_add_tail(&error->list, &iface->errors);
71 error->subsystem = subsystem;
74 dest = (char *) &error->data[n_data + 1];
75 for (i = 0; i < n_data; i++) {
76 error->data[i] = dest;
77 memcpy(dest, data[i], datalen[i]);
80 error->data[n_data] = NULL;
84 interface_event(struct interface *iface, enum interface_event ev)
86 struct interface_user *dep, *tmp;
88 list_for_each_entry_safe(dep, tmp, &iface->users, list)
89 dep->cb(dep, IFEV_UP);
91 interface_queue_event(iface, ev);
95 interface_flush_state(struct interface *iface)
97 interface_ip_flush(&iface->proto_ip);
98 if (iface->main_dev.dev)
99 device_release(&iface->main_dev);
100 if (iface->l3_dev != &iface->main_dev && iface->l3_dev->dev)
101 device_release(iface->l3_dev);
105 mark_interface_down(struct interface *iface)
107 if (iface->state == IFS_UP)
108 interface_event(iface, IFEV_DOWN);
109 interface_flush_state(iface);
110 iface->state = IFS_DOWN;
114 __interface_set_down(struct interface *iface, bool force)
116 interface_clear_errors(iface);
118 if (iface->state == IFS_DOWN ||
119 iface->state == IFS_TEARDOWN)
122 if (iface->state == IFS_UP)
123 interface_event(iface, IFEV_DOWN);
124 iface->state = IFS_TEARDOWN;
125 interface_ip_flush(&iface->config_ip);
126 interface_ip_flush(&iface->proto_ip);
127 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
129 interface_flush_state(iface);
133 interface_cb(struct device_user *dep, enum device_event ev)
135 struct interface *iface;
138 iface = container_of(dep, struct interface, main_dev);
143 case DEV_EVENT_REMOVE:
150 interface_set_available(iface, new_state);
154 interface_set_available(struct interface *iface, bool new_state)
156 if (iface->available == new_state)
159 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
160 iface->available = new_state;
163 if (iface->autostart && !config_init)
164 interface_set_up(iface);
166 __interface_set_down(iface, true);
170 interface_add_user(struct interface_user *dep, struct interface *iface)
173 list_add(&dep->list, &iface->users);
174 if (iface->state == IFS_UP)
175 dep->cb(dep, IFEV_UP);
179 interface_remove_user(struct interface_user *dep)
181 list_del_init(&dep->list);
186 interface_claim_device(struct interface *iface)
191 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
192 dev = device_get(iface->ifname, true);
194 device_add_user(&iface->main_dev, dev);
196 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
197 interface_set_available(iface, true);
202 interface_cleanup(struct interface *iface, bool reload)
204 struct interface_user *dep, *tmp;
206 list_for_each_entry_safe(dep, tmp, &iface->users, list)
207 interface_remove_user(dep);
209 interface_ip_flush(&iface->config_ip);
210 interface_flush_state(iface);
211 interface_clear_errors(iface);
212 if (iface->main_dev.dev &&
213 (!reload || !iface->main_dev.hotplug))
214 device_remove_user(&iface->main_dev);
215 iface->l3_dev = &iface->main_dev;
216 interface_set_proto_state(iface, NULL);
220 interface_do_free(struct interface *iface)
222 interface_cleanup(iface, false);
224 netifd_ubus_remove_interface(iface);
225 avl_delete(&interfaces.avl, &iface->node.avl);
230 interface_do_reload(struct interface *iface)
232 interface_cleanup(iface, true);
233 proto_init_interface(iface, iface->config);
234 interface_claim_device(iface);
238 interface_handle_config_change(struct interface *iface)
240 switch(iface->config_state) {
244 interface_do_reload(iface);
247 interface_do_free(iface);
250 if (iface->autostart && iface->available)
251 interface_set_up(iface);
255 interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
257 struct interface *iface = state->iface;
261 if (iface->state != IFS_SETUP)
264 interface_ip_set_enabled(&iface->config_ip, true);
265 system_flush_routes();
266 iface->state = IFS_UP;
267 iface->start_time = system_get_rtime();
268 interface_event(iface, IFEV_UP);
269 interface_write_resolv_conf();
270 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
273 if (iface->state == IFS_DOWN)
276 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
277 interface_ip_set_enabled(&iface->config_ip, false);
278 system_flush_routes();
279 mark_interface_down(iface);
280 interface_handle_config_change(iface);
282 case IFPEV_LINK_LOST:
283 if (iface->state != IFS_UP)
286 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
287 if (iface->state == IFS_UP)
288 interface_event(iface, IFEV_DOWN);
289 iface->state = IFS_SETUP;
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 interface_ip_init(&iface->proto_ip, iface);
322 interface_ip_init(&iface->config_ip, iface);
323 iface->config_ip.enabled = false;
325 iface->main_dev.cb = interface_cb;
326 iface->l3_dev = &iface->main_dev;
328 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
329 blob_data(config), blob_len(config));
331 if ((cur = tb[IFACE_ATTR_PROTO]))
332 proto_name = blobmsg_data(cur);
334 proto_attach_interface(iface, proto_name);
336 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
337 iface->proto_ip.no_defaultroute =
338 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
340 iface->config_autostart = iface->autostart;
344 interface_add(struct interface *iface, struct blob_attr *config)
346 struct blob_attr *tb[IFACE_ATTR_MAX];
347 struct blob_attr *cur;
349 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
350 blob_data(config), blob_len(config));
352 if ((cur = tb[IFACE_ATTR_IFNAME]))
353 iface->ifname = blobmsg_data(cur);
355 iface->config = config;
356 vlist_add(&interfaces, &iface->node, iface->name);
360 interface_remove_link(struct interface *iface, struct device *dev)
362 struct device *mdev = iface->main_dev.dev;
364 if (mdev && mdev->hotplug_ops)
365 return mdev->hotplug_ops->del(mdev, dev);
367 if (!iface->main_dev.hotplug)
368 return UBUS_STATUS_INVALID_ARGUMENT;
370 if (dev != iface->main_dev.dev)
371 return UBUS_STATUS_INVALID_ARGUMENT;
373 device_remove_user(&iface->main_dev);
378 interface_add_link(struct interface *iface, struct device *dev)
380 struct device *mdev = iface->main_dev.dev;
385 if (iface->main_dev.hotplug)
386 device_remove_user(&iface->main_dev);
389 if (mdev->hotplug_ops)
390 return mdev->hotplug_ops->add(mdev, dev);
392 return UBUS_STATUS_NOT_SUPPORTED;
395 device_add_user(&iface->main_dev, dev);
396 iface->main_dev.hotplug = true;
401 interface_set_up(struct interface *iface)
405 iface->autostart = true;
407 if (iface->state != IFS_DOWN)
410 interface_clear_errors(iface);
411 if (!iface->available) {
412 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
416 if (iface->main_dev.dev) {
417 ret = device_claim(&iface->main_dev);
422 iface->state = IFS_SETUP;
423 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
425 mark_interface_down(iface);
433 interface_set_down(struct interface *iface)
436 vlist_for_each_element(&interfaces, iface, node)
437 __interface_set_down(iface, false);
439 iface->autostart = false;
440 __interface_set_down(iface, false);
447 interface_start_pending(void)
449 struct interface *iface;
451 vlist_for_each_element(&interfaces, iface, node) {
452 if (iface->available && iface->autostart)
453 interface_set_up(iface);
458 set_config_state(struct interface *iface, enum interface_config_state s)
460 iface->config_state = s;
461 if (iface->state == IFS_DOWN)
462 interface_handle_config_change(iface);
464 __interface_set_down(iface, false);
468 interface_update_start(struct interface *iface)
470 interface_ip_update_start(&iface->proto_ip);
474 interface_update_complete(struct interface *iface)
476 struct device_route *route;
478 interface_ip_update_complete(&iface->proto_ip);
479 vlist_for_each_element(&iface->config_ip.route, route, node) {
480 if (iface->l3_dev->dev) {
481 system_add_route(iface->l3_dev->dev, route);
482 route->enabled = true;
488 interface_change_config(struct interface *if_old, struct interface *if_new)
490 struct blob_attr *old_config = if_old->config;
491 const char *old_ifname = if_old->ifname;
492 const struct proto_handler *proto = if_old->proto_handler;
494 interface_clear_errors(if_old);
495 if_old->config = if_new->config;
496 if (!if_old->config_autostart && if_new->config_autostart)
497 if_old->autostart = true;
499 if_old->config_autostart = if_new->config_autostart;
500 if_old->ifname = if_new->ifname;
501 if_old->proto_handler = if_new->proto_handler;
503 if ((!!old_ifname != !!if_new->ifname) ||
504 (old_ifname && strcmp(old_ifname, if_new->ifname) != 0) ||
505 proto != if_new->proto_handler) {
506 D(INTERFACE, "Reload interface '%s' because of ifname/proto change\n",
511 if (!proto->config_params)
512 D(INTERFACE, "No config parameters for interface '%s'\n",
514 else if (!config_check_equal(old_config, if_new->config,
515 proto->config_params)) {
516 D(INTERFACE, "Reload interface '%s because of config changes\n",
521 #define UPDATE(field) ({ \
522 bool __changed = (if_old->field != if_new->field); \
523 if_old->field = if_new->field; \
527 if (UPDATE(metric) || UPDATE(proto_ip.no_defaultroute)) {
528 interface_ip_set_enabled(&if_old->config_ip, false);
529 interface_ip_set_enabled(&if_old->config_ip, if_new->config_ip.enabled);
530 interface_ip_set_enabled(&if_old->proto_ip, false);
531 interface_ip_set_enabled(&if_old->proto_ip, if_new->proto_ip.enabled);
539 set_config_state(if_old, IFC_RELOAD);
546 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
547 struct vlist_node *node_old)
549 struct interface *if_old = container_of(node_old, struct interface, node);
550 struct interface *if_new = container_of(node_new, struct interface, node);
552 if (node_old && node_new) {
553 D(INTERFACE, "Update interface '%s'\n", if_new->name);
554 interface_change_config(if_old, if_new);
555 } else if (node_old) {
556 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
557 set_config_state(if_old, IFC_REMOVE);
558 } else if (node_new) {
559 D(INTERFACE, "Create interface '%s'\n", if_new->name);
560 proto_init_interface(if_new, if_new->config);
561 interface_claim_device(if_new);
562 netifd_ubus_add_interface(if_new);
568 interface_init_list(void)
570 vlist_init(&interfaces, avl_strcmp, interface_update);
571 interfaces.keep_old = true;
572 interfaces.no_delete = true;