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_data_del(struct interface *iface, struct interface_data *data)
86 avl_delete(&iface->data, &data->node);
91 interface_data_flush(struct interface *iface)
93 struct interface_data *d, *tmp;
95 avl_for_each_element_safe(&iface->data, d, node, tmp)
96 interface_data_del(iface, d);
100 interface_add_data(struct interface *iface, const struct blob_attr *data)
102 struct interface_data *n, *o;
104 if (!blobmsg_check_attr(data, true))
105 return UBUS_STATUS_INVALID_ARGUMENT;
107 n = calloc(1, sizeof(*data) + blob_pad_len(data));
108 memcpy(n->data, data, blob_pad_len(data));
109 n->node.key = blobmsg_name(data);
111 o = avl_find_element(&iface->data, n->node.key, o, node);
113 interface_data_del(iface, o);
115 avl_insert(&iface->data, &n->node);
120 interface_event(struct interface *iface, enum interface_event ev)
122 struct interface_user *dep, *tmp;
124 list_for_each_entry_safe(dep, tmp, &iface->users, list)
125 dep->cb(dep, IFEV_UP);
127 interface_queue_event(iface, ev);
131 interface_flush_state(struct interface *iface)
133 if (iface->main_dev.dev)
134 device_release(&iface->main_dev);
135 if (iface->l3_dev.dev)
136 device_release(&iface->l3_dev);
137 interface_data_flush(iface);
141 mark_interface_down(struct interface *iface)
143 if (iface->state == IFS_UP)
144 interface_event(iface, IFEV_DOWN);
145 interface_ip_set_enabled(&iface->config_ip, false);
146 interface_ip_flush(&iface->proto_ip);
147 interface_flush_state(iface);
148 system_flush_routes();
149 iface->state = IFS_DOWN;
153 __interface_set_down(struct interface *iface, bool force)
155 interface_clear_errors(iface);
157 if (iface->state == IFS_DOWN ||
158 iface->state == IFS_TEARDOWN)
161 if (iface->state == IFS_UP)
162 interface_event(iface, IFEV_DOWN);
163 iface->state = IFS_TEARDOWN;
164 interface_proto_event(iface->proto, PROTO_CMD_TEARDOWN, force);
166 interface_flush_state(iface);
170 interface_cb(struct device_user *dep, enum device_event ev)
172 struct interface *iface;
175 iface = container_of(dep, struct interface, main_dev);
180 case DEV_EVENT_REMOVE:
187 interface_set_available(iface, new_state);
191 interface_set_available(struct interface *iface, bool new_state)
193 if (iface->available == new_state)
196 D(INTERFACE, "Interface '%s', available=%d\n", iface->name, new_state);
197 iface->available = new_state;
200 if (iface->autostart && !config_init)
201 interface_set_up(iface);
203 __interface_set_down(iface, true);
207 interface_add_user(struct interface_user *dep, struct interface *iface)
210 list_add(&dep->list, &iface->users);
211 if (iface->state == IFS_UP)
212 dep->cb(dep, IFEV_UP);
216 interface_remove_user(struct interface_user *dep)
218 list_del_init(&dep->list);
223 interface_claim_device(struct interface *iface)
228 !(iface->proto_handler->flags & PROTO_FLAG_NODEV)) {
229 dev = device_get(iface->ifname, true);
231 interface_set_main_dev(iface, dev);
233 if (iface->proto_handler->flags & PROTO_FLAG_INIT_AVAILABLE)
234 interface_set_available(iface, true);
239 interface_cleanup(struct interface *iface, bool reload)
241 struct interface_user *dep, *tmp;
243 list_for_each_entry_safe(dep, tmp, &iface->users, list)
244 interface_remove_user(dep);
246 interface_dequeue_event(iface);
247 interface_ip_flush(&iface->config_ip);
248 interface_flush_state(iface);
249 interface_clear_errors(iface);
250 if (iface->main_dev.dev &&
251 (!reload || !iface->main_dev.hotplug))
252 interface_set_main_dev(iface, NULL);
253 interface_set_proto_state(iface, NULL);
257 interface_do_free(struct interface *iface)
259 interface_cleanup(iface, false);
261 netifd_ubus_remove_interface(iface);
262 avl_delete(&interfaces.avl, &iface->node.avl);
267 interface_do_reload(struct interface *iface)
269 interface_cleanup(iface, true);
270 proto_init_interface(iface, iface->config);
271 interface_claim_device(iface);
275 interface_handle_config_change(struct interface *iface)
277 switch(iface->config_state) {
281 interface_do_reload(iface);
284 interface_do_free(iface);
287 if (iface->autostart && iface->available)
288 interface_set_up(iface);
292 interface_proto_cb(struct interface_proto_state *state, enum interface_proto_event ev)
294 struct interface *iface = state->iface;
298 if (iface->state != IFS_SETUP)
301 interface_ip_set_enabled(&iface->config_ip, true);
302 system_flush_routes();
303 iface->state = IFS_UP;
304 iface->start_time = system_get_rtime();
305 interface_event(iface, IFEV_UP);
306 interface_write_resolv_conf();
307 netifd_log_message(L_NOTICE, "Interface '%s' is now up\n", iface->name);
310 if (iface->state == IFS_DOWN)
313 netifd_log_message(L_NOTICE, "Interface '%s' is now down\n", iface->name);
314 mark_interface_down(iface);
315 interface_handle_config_change(iface);
317 case IFPEV_LINK_LOST:
318 if (iface->state != IFS_UP)
321 netifd_log_message(L_NOTICE, "Interface '%s' has lost the connection\n", iface->name);
322 mark_interface_down(iface);
323 iface->state = IFS_SETUP;
328 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state)
331 iface->proto->free(iface->proto);
334 iface->state = IFS_DOWN;
335 iface->proto = state;
339 state->proto_event = interface_proto_cb;
340 state->iface = iface;
344 interface_init(struct interface *iface, const char *name,
345 struct blob_attr *config)
347 struct blob_attr *tb[IFACE_ATTR_MAX];
348 struct blob_attr *cur;
349 const char *proto_name = NULL;
351 strncpy(iface->name, name, sizeof(iface->name) - 1);
352 INIT_LIST_HEAD(&iface->errors);
353 INIT_LIST_HEAD(&iface->users);
354 INIT_LIST_HEAD(&iface->hotplug_list);
355 interface_ip_init(&iface->proto_ip, iface);
356 interface_ip_init(&iface->config_ip, iface);
357 avl_init(&iface->data, avl_strcmp, false, NULL);
358 iface->config_ip.enabled = false;
360 iface->main_dev.cb = interface_cb;
362 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
363 blob_data(config), blob_len(config));
365 if ((cur = tb[IFACE_ATTR_PROTO]))
366 proto_name = blobmsg_data(cur);
368 proto_attach_interface(iface, proto_name);
370 iface->autostart = blobmsg_get_bool_default(tb[IFACE_ATTR_AUTO], true);
371 iface->proto_ip.no_defaultroute =
372 !blobmsg_get_bool_default(tb[IFACE_ATTR_DEFAULTROUTE], true);
374 iface->config_autostart = iface->autostart;
378 interface_add(struct interface *iface, struct blob_attr *config)
380 struct blob_attr *tb[IFACE_ATTR_MAX];
381 struct blob_attr *cur;
383 blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
384 blob_data(config), blob_len(config));
386 if ((cur = tb[IFACE_ATTR_IFNAME]))
387 iface->ifname = blobmsg_data(cur);
389 iface->config = config;
390 vlist_add(&interfaces, &iface->node, iface->name);
394 interface_set_l3_dev(struct interface *iface, struct device *dev)
396 bool enabled = iface->config_ip.enabled;
397 bool claimed = iface->l3_dev.claimed;
399 if (iface->l3_dev.dev == dev)
402 interface_ip_set_enabled(&iface->config_ip, false);
403 interface_ip_flush(&iface->proto_ip);
404 device_add_user(&iface->l3_dev, dev);
408 device_claim(&iface->l3_dev);
409 interface_ip_set_enabled(&iface->config_ip, enabled);
414 interface_set_main_dev(struct interface *iface, struct device *dev)
416 bool set_l3 = (iface->main_dev.dev == iface->l3_dev.dev);
417 bool claimed = iface->l3_dev.claimed;
419 if (iface->main_dev.dev == dev)
423 interface_set_l3_dev(iface, dev);
425 device_add_user(&iface->main_dev, dev);
427 device_claim(&iface->l3_dev);
429 if (!iface->l3_dev.dev)
430 interface_set_l3_dev(iface, dev);
434 interface_remove_link(struct interface *iface, struct device *dev)
436 struct device *mdev = iface->main_dev.dev;
438 if (mdev && mdev->hotplug_ops)
439 return mdev->hotplug_ops->del(mdev, dev);
441 if (!iface->main_dev.hotplug)
442 return UBUS_STATUS_INVALID_ARGUMENT;
444 if (dev != iface->main_dev.dev)
445 return UBUS_STATUS_INVALID_ARGUMENT;
447 device_remove_user(&iface->main_dev);
452 interface_add_link(struct interface *iface, struct device *dev)
454 struct device *mdev = iface->main_dev.dev;
459 if (iface->main_dev.hotplug)
460 device_remove_user(&iface->main_dev);
463 if (mdev->hotplug_ops)
464 return mdev->hotplug_ops->add(mdev, dev);
466 return UBUS_STATUS_NOT_SUPPORTED;
469 interface_set_main_dev(iface, dev);
470 iface->main_dev.hotplug = true;
475 interface_set_up(struct interface *iface)
479 iface->autostart = true;
481 if (iface->state != IFS_DOWN)
484 interface_clear_errors(iface);
485 if (!iface->available) {
486 interface_add_error(iface, "interface", "NO_DEVICE", NULL, 0);
490 if (iface->main_dev.dev) {
491 ret = device_claim(&iface->main_dev);
496 iface->state = IFS_SETUP;
497 ret = interface_proto_event(iface->proto, PROTO_CMD_SETUP, false);
499 mark_interface_down(iface);
507 interface_set_down(struct interface *iface)
510 vlist_for_each_element(&interfaces, iface, node)
511 __interface_set_down(iface, false);
513 iface->autostart = false;
514 __interface_set_down(iface, false);
521 interface_start_pending(void)
523 struct interface *iface;
525 vlist_for_each_element(&interfaces, iface, node) {
526 if (iface->available && iface->autostart)
527 interface_set_up(iface);
532 set_config_state(struct interface *iface, enum interface_config_state s)
534 iface->config_state = s;
535 if (iface->state == IFS_DOWN)
536 interface_handle_config_change(iface);
538 __interface_set_down(iface, false);
542 interface_update_start(struct interface *iface)
544 interface_ip_update_start(&iface->proto_ip);
548 interface_update_complete(struct interface *iface)
550 interface_ip_update_complete(&iface->proto_ip);
554 interface_change_config(struct interface *if_old, struct interface *if_new)
556 struct blob_attr *old_config = if_old->config;
557 const char *old_ifname = if_old->ifname;
558 const struct proto_handler *proto = if_old->proto_handler;
560 interface_clear_errors(if_old);
561 if_old->config = if_new->config;
562 if (!if_old->config_autostart && if_new->config_autostart)
563 if_old->autostart = true;
565 if_old->config_autostart = if_new->config_autostart;
566 if_old->ifname = if_new->ifname;
567 if_old->proto_handler = if_new->proto_handler;
569 if ((!!old_ifname != !!if_new->ifname) ||
570 (old_ifname && strcmp(old_ifname, if_new->ifname) != 0) ||
571 proto != if_new->proto_handler) {
572 D(INTERFACE, "Reload interface '%s' because of ifname/proto change\n",
577 if (!proto->config_params)
578 D(INTERFACE, "No config parameters for interface '%s'\n",
580 else if (!config_check_equal(old_config, if_new->config,
581 proto->config_params)) {
582 D(INTERFACE, "Reload interface '%s because of config changes\n",
587 #define UPDATE(field) ({ \
588 bool __changed = (if_old->field != if_new->field); \
589 if_old->field = if_new->field; \
593 if (UPDATE(metric) || UPDATE(proto_ip.no_defaultroute)) {
594 interface_ip_set_enabled(&if_old->config_ip, false);
595 interface_ip_set_enabled(&if_old->config_ip, if_new->config_ip.enabled);
596 interface_ip_set_enabled(&if_old->proto_ip, false);
597 interface_ip_set_enabled(&if_old->proto_ip, if_new->proto_ip.enabled);
605 set_config_state(if_old, IFC_RELOAD);
612 interface_update(struct vlist_tree *tree, struct vlist_node *node_new,
613 struct vlist_node *node_old)
615 struct interface *if_old = container_of(node_old, struct interface, node);
616 struct interface *if_new = container_of(node_new, struct interface, node);
618 if (node_old && node_new) {
619 D(INTERFACE, "Update interface '%s'\n", if_new->name);
620 interface_change_config(if_old, if_new);
621 } else if (node_old) {
622 D(INTERFACE, "Remove interface '%s'\n", if_old->name);
623 set_config_state(if_old, IFC_REMOVE);
624 } else if (node_new) {
625 D(INTERFACE, "Create interface '%s'\n", if_new->name);
626 proto_init_interface(if_new, if_new->config);
627 interface_claim_device(if_new);
628 netifd_ubus_add_interface(if_new);
634 interface_init_list(void)
636 vlist_init(&interfaces, avl_strcmp, interface_update);
637 interfaces.keep_old = true;
638 interfaces.no_delete = true;