2 * netifd - network interface daemon
3 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
20 #define WIRELESS_SETUP_RETRY 3
22 struct vlist_tree wireless_devices;
23 struct avl_tree wireless_drivers;
24 static struct blob_buf b;
27 static const struct blobmsg_policy wdev_policy =
28 { .name = "disabled", .type = BLOBMSG_TYPE_BOOL };
30 static const struct uci_blob_param_list wdev_param = {
32 .params = &wdev_policy,
41 static const struct blobmsg_policy vif_policy[__VIF_ATTR_MAX] = {
42 [VIF_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
43 [VIF_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_STRING },
46 static const struct uci_blob_param_list vif_param = {
47 .n_params = ARRAY_SIZE(vif_policy),
52 put_container(struct blob_buf *buf, struct blob_attr *attr, const char *name)
54 void *c = blobmsg_open_table(&b, name);
55 blob_put_raw(&b, blob_data(attr), blob_len(attr));
56 blobmsg_close_table(&b, c);
60 vif_config_add_bridge(struct blob_buf *buf, const char *network, bool prepare)
62 struct interface *iface;
68 iface = vlist_find(&interfaces, network, iface, node);
72 dev = iface->main_dev.dev;
76 if (dev->type != &bridge_device_type)
79 blobmsg_add_string(buf, "bridge", dev->ifname);
83 prepare_config(struct wireless_device *wdev, struct blob_buf *buf, bool up)
85 struct wireless_interface *vif;
89 put_container(&b, wdev->config, "config");
91 blobmsg_add_blob(&b, wdev->data);
93 l = blobmsg_open_table(&b, "interfaces");
94 vlist_for_each_element(&wdev->interfaces, vif, node) {
95 i = blobmsg_open_table(&b, vif->name);
96 vif_config_add_bridge(&b, vif->network, up);
97 put_container(&b, vif->config, "config");
99 blobmsg_add_blob(&b, vif->data);
100 blobmsg_close_table(&b, i);
102 blobmsg_close_table(&b, l);
106 wireless_process_check(struct wireless_process *proc)
108 return check_pid_path(proc->pid, proc->exe);
112 wireless_complete_kill_request(struct wireless_device *wdev)
114 if (!wdev->kill_request)
117 ubus_complete_deferred_request(ubus_ctx, wdev->kill_request, 0);
118 free(wdev->kill_request);
119 wdev->kill_request = NULL;
123 wireless_process_free(struct wireless_device *wdev, struct wireless_process *proc)
125 D(WIRELESS, "Wireless device '%s' free pid %d\n", wdev->name, proc->pid);
126 list_del(&proc->list);
129 if (list_empty(&wdev->script_proc))
130 wireless_complete_kill_request(wdev);
134 wireless_close_script_proc_fd(struct wireless_device *wdev)
136 if (wdev->script_proc_fd.fd < 0)
139 uloop_fd_delete(&wdev->script_proc_fd);
140 close(wdev->script_proc_fd.fd);
141 wdev->script_proc_fd.fd = -1;
145 wireless_process_kill_all(struct wireless_device *wdev, int signal, bool free)
147 struct wireless_process *proc, *tmp;
149 list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
150 bool check = wireless_process_check(proc);
153 D(WIRELESS, "Wireless device '%s' kill pid %d\n", wdev->name, proc->pid);
154 kill(proc->pid, signal);
158 wireless_process_free(wdev, proc);
162 wireless_close_script_proc_fd(wdev);
166 wireless_device_free_state(struct wireless_device *wdev)
168 struct wireless_interface *vif;
170 wireless_complete_kill_request(wdev);
173 vlist_for_each_element(&wdev->interfaces, vif, node) {
180 static void wireless_interface_handle_link(struct wireless_interface *vif, bool up)
182 struct interface *iface;
184 if (!vif->network || !vif->ifname)
187 iface = vlist_find(&interfaces, vif->network, iface, node);
191 interface_handle_link(iface, vif->ifname, up);
195 wireless_device_setup_cancel(struct wireless_device *wdev)
201 uloop_timeout_set(&wdev->timeout, 10 * 1000);
205 wireless_device_run_handler(struct wireless_device *wdev, bool up)
207 const char *action = up ? "setup" : "teardown";
211 int fds[2] = { -1, -1 };
213 D(WIRELESS, "Wireless device '%s' run %s handler\n", wdev->name, action);
214 prepare_config(wdev, &b, up);
215 config = blobmsg_format_json(b.head, true);
217 argv[i++] = wdev->drv->script;
218 argv[i++] = wdev->drv->name;
220 argv[i++] = wdev->name;
224 if (up && pipe(fds) == 0) {
225 wdev->script_proc_fd.fd = fds[0];
226 uloop_fd_add(&wdev->script_proc_fd,
227 ULOOP_READ | ULOOP_EDGE_TRIGGER);
230 netifd_start_process(argv, NULL, &wdev->script_task);
239 __wireless_device_set_up(struct wireless_device *wdev)
241 if (wdev->state != IFS_DOWN || config_init)
244 wdev->state = IFS_SETUP;
245 wireless_device_run_handler(wdev, true);
249 wireless_device_mark_down(struct wireless_device *wdev)
251 struct wireless_interface *vif;
253 D(WIRELESS, "Wireless device '%s' is now down\n", wdev->name);
255 vlist_for_each_element(&wdev->interfaces, vif, node)
256 wireless_interface_handle_link(vif, false);
258 wireless_process_kill_all(wdev, SIGTERM, true);
260 wdev->state = IFS_DOWN;
261 wireless_device_free_state(wdev);
264 __wireless_device_set_up(wdev);
268 wireless_device_mark_up(struct wireless_device *wdev)
270 struct wireless_interface *vif;
272 D(WIRELESS, "Wireless device '%s' is now up\n", wdev->name);
273 wdev->state = IFS_UP;
274 vlist_for_each_element(&wdev->interfaces, vif, node)
275 wireless_interface_handle_link(vif, true);
279 wireless_device_setup_timeout(struct uloop_timeout *timeout)
281 struct wireless_device *wdev = container_of(timeout, struct wireless_device, timeout);
283 netifd_kill_process(&wdev->script_task);
284 wdev->script_task.cb(&wdev->script_task, -1);
285 wireless_device_mark_down(wdev);
289 wireless_device_set_up(struct wireless_device *wdev)
291 wdev->retry = WIRELESS_SETUP_RETRY;
292 wdev->autostart = true;
293 __wireless_device_set_up(wdev);
297 __wireless_device_set_down(struct wireless_device *wdev)
299 if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN)
302 if (wdev->script_task.uloop.pending) {
303 wireless_device_setup_cancel(wdev);
307 wdev->state = IFS_TEARDOWN;
308 wireless_device_run_handler(wdev, false);
312 wireless_device_retry_setup(struct wireless_device *wdev)
314 if (--wdev->retry < 0)
315 wdev->autostart = false;
317 __wireless_device_set_down(wdev);
321 wireless_device_script_task_cb(struct netifd_process *proc, int ret)
323 struct wireless_device *wdev = container_of(proc, struct wireless_device, script_task);
325 switch (wdev->state) {
327 wireless_device_retry_setup(wdev);
330 wireless_device_mark_down(wdev);
338 wireless_device_set_down(struct wireless_device *wdev)
340 wdev->autostart = false;
341 __wireless_device_set_down(wdev);
345 wireless_device_free(struct wireless_device *wdev)
347 vlist_flush_all(&wdev->interfaces);
353 wdev_handle_config_change(struct wireless_device *wdev)
355 enum interface_config_state state = wdev->config_state;
357 wdev->config_state = IFC_NORMAL;
363 __wireless_device_set_up(wdev);
366 wireless_device_free(wdev);
372 wdev_set_config_state(struct wireless_device *wdev, enum interface_config_state s)
374 enum interface_config_state old_state = wdev->config_state;
376 wdev->config_state = s;
377 if (old_state != IFC_NORMAL)
380 if (wdev->state == IFS_DOWN)
381 wdev_handle_config_change(wdev);
383 __wireless_device_set_down(wdev);
387 wdev_change_config(struct wireless_device *wdev, struct wireless_device *wd_new)
389 struct blob_attr *new_config = wd_new->config;
393 if (blob_attr_equal(wdev->config, new_config))
396 D(WIRELESS, "Update configuration of wireless device '%s'\n", wdev->name);
398 wdev->config = blob_memdup(new_config);
399 wdev_set_config_state(wdev, IFC_RELOAD);
403 wdev_create(struct wireless_device *wdev)
405 wdev->retry = WIRELESS_SETUP_RETRY;
406 wdev->config = blob_memdup(wdev->config);
410 wdev_update(struct vlist_tree *tree, struct vlist_node *node_new,
411 struct vlist_node *node_old)
413 struct wireless_device *wd_old = container_of(node_old, struct wireless_device, node);
414 struct wireless_device *wd_new = container_of(node_new, struct wireless_device, node);
416 if (wd_old && wd_new) {
417 wdev_change_config(wd_old, wd_new);
419 D(WIRELESS, "Delete wireless device '%s'\n", wd_old->name);
420 wdev_set_config_state(wd_old, IFC_REMOVE);
422 D(WIRELESS, "Create wireless device '%s'\n", wd_new->name);
428 wireless_add_handler(const char *script, const char *name, json_object *obj)
430 struct wireless_driver *drv;
431 char *name_str, *script_str;
432 json_object *dev_config_obj, *iface_config_obj;
433 struct uci_blob_param_list *dev_config, *iface_config;
435 dev_config_obj = json_get_field(obj, "device", json_type_array);
436 iface_config_obj = json_get_field(obj, "iface", json_type_array);
438 if (!dev_config_obj || !iface_config_obj)
441 drv = calloc_a(sizeof(*drv),
442 &name_str, strlen(name) + 1,
443 &script_str, strlen(script) + 1,
444 &dev_config, sizeof(*dev_config) + sizeof(void *),
445 &iface_config, sizeof(*iface_config) + sizeof(void *));
447 drv->name = strcpy(name_str, name);
448 drv->script = strcpy(script_str, script);
450 dev_config->n_next = 1;
451 dev_config->next[0] = &wdev_param;
452 drv->device.config = dev_config;
454 iface_config->n_next = 1;
455 iface_config->next[0] = &vif_param;
456 drv->interface.config = iface_config;
458 drv->device.buf = netifd_handler_parse_config(drv->device.config, dev_config_obj);
459 drv->interface.buf = netifd_handler_parse_config(drv->interface.config, iface_config_obj);
461 drv->node.key = drv->name;
462 avl_insert(&wireless_drivers, &drv->node);
463 D(WIRELESS, "Add handler for script %s: %s\n", script, name);
467 wireless_init_list(void)
469 vlist_init(&wireless_devices, avl_strcmp, wdev_update);
470 wireless_devices.keep_old = true;
471 wireless_devices.no_delete = true;
473 avl_init(&wireless_drivers, avl_strcmp, false, NULL);
474 drv_fd = netifd_open_subdir("wireless");
478 netifd_init_script_handlers(drv_fd, wireless_add_handler);
482 wireless_interface_init_config(struct wireless_interface *vif)
484 struct blob_attr *tb[__VIF_ATTR_MAX];
485 struct blob_attr *cur;
488 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(vif->config), blob_len(vif->config));
490 if ((cur = tb[VIF_ATTR_NETWORK]))
491 vif->network = blobmsg_data(cur);
495 vif_update(struct vlist_tree *tree, struct vlist_node *node_new,
496 struct vlist_node *node_old)
498 struct wireless_interface *vif_old = container_of(node_old, struct wireless_interface, node);
499 struct wireless_interface *vif_new = container_of(node_new, struct wireless_interface, node);
500 struct wireless_device *wdev;
503 wdev = vif_old->wdev;
505 wdev = vif_new->wdev;
507 if (vif_old && vif_new) {
508 vif_old->section = vif_new->section;
509 if (blob_attr_equal(vif_old->config, vif_new->config)) {
514 D(WIRELESS, "Update wireless interface %s on device %s\n", vif_new->name, wdev->name);
515 free(vif_old->config);
516 vif_old->config = blob_memdup(vif_new->config);
517 wireless_interface_init_config(vif_old);
519 } else if (vif_new) {
520 D(WIRELESS, "Create new wireless interface %s on device %s\n", vif_new->name, wdev->name);
521 vif_new->config = blob_memdup(vif_new->config);
522 wireless_interface_init_config(vif_new);
523 } else if (vif_old) {
524 D(WIRELESS, "Delete wireless interface %s on device %s\n", vif_old->name, wdev->name);
525 free(vif_old->config);
529 wdev_set_config_state(wdev, IFC_RELOAD);
533 wireless_proc_poll_fd(struct uloop_fd *fd, unsigned int events)
535 struct wireless_device *wdev = container_of(fd, struct wireless_device, script_proc_fd);
539 int b = read(fd->fd, buf, sizeof(buf));
555 uloop_timeout_set(&wdev->script_check, 0);
556 wireless_close_script_proc_fd(wdev);
560 wireless_device_check_script_tasks(struct uloop_timeout *timeout)
562 struct wireless_device *wdev = container_of(timeout, struct wireless_device, script_check);
563 struct wireless_process *proc, *tmp;
564 bool restart = false;
566 list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
567 if (wireless_process_check(proc))
570 D(WIRELESS, "Wireless device '%s' pid %d has terminated\n", wdev->name, proc->pid);
574 wireless_process_free(wdev, proc);
578 wireless_device_retry_setup(wdev);
580 uloop_timeout_set(&wdev->script_check, 1000);
584 wireless_device_create(struct wireless_driver *drv, const char *name, struct blob_attr *data)
586 struct wireless_device *wdev;
588 struct blob_attr *disabled;
590 blobmsg_parse(&wdev_policy, 1, &disabled, blob_data(data), blob_len(data));
591 if (disabled && blobmsg_get_bool(disabled))
594 wdev = calloc_a(sizeof(*wdev), &name_buf, strlen(name) + 1);
596 wdev->state = IFS_DOWN;
597 wdev->config_state = IFC_NORMAL;
598 wdev->name = strcpy(name_buf, name);
600 wdev->config_autostart = true;
601 wdev->autostart = wdev->config_autostart;
602 INIT_LIST_HEAD(&wdev->script_proc);
603 vlist_init(&wdev->interfaces, avl_strcmp, vif_update);
604 wdev->interfaces.keep_old = true;
605 wdev->interfaces.no_delete = true;
606 vlist_add(&wireless_devices, &wdev->node, wdev->name);
608 wdev->timeout.cb = wireless_device_setup_timeout;
609 wdev->script_task.cb = wireless_device_script_task_cb;
610 wdev->script_task.dir_fd = drv_fd;
611 wdev->script_task.log_prefix = wdev->name;
613 wdev->script_proc_fd.fd = -1;
614 wdev->script_proc_fd.cb = wireless_proc_poll_fd;
616 wdev->script_check.cb = wireless_device_check_script_tasks;
619 void wireless_interface_create(struct wireless_device *wdev, struct blob_attr *data, const char *section)
621 struct wireless_interface *vif;
622 struct blob_attr *tb[__VIF_ATTR_MAX];
623 struct blob_attr *cur;
627 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(data), blob_len(data));
629 cur = tb[VIF_ATTR_DISABLED];
630 if (cur && blobmsg_get_bool(cur))
633 sprintf(name, "%d", wdev->vif_idx++);
635 vif = calloc_a(sizeof(*vif), &name_buf, strlen(name) + 1);
636 vif->name = strcpy(name_buf, name);
639 vif->section = section;
640 vlist_add(&wdev->interfaces, &vif->node, vif->name);
644 wireless_interface_status(struct wireless_interface *iface, struct blob_buf *b)
648 i = blobmsg_open_table(b, iface->name);
650 blobmsg_add_string(b, "section", iface->section);
652 blobmsg_add_string(b, "ifname", iface->ifname);
654 blob_put_raw(b, blob_data(iface->data), blob_len(iface->data));
655 blobmsg_close_table(b, i);
659 wireless_device_status(struct wireless_device *wdev, struct blob_buf *b)
661 struct wireless_interface *iface;
664 c = blobmsg_open_table(b, wdev->name);
665 blobmsg_add_u8(b, "up", wdev->state == IFS_UP);
666 blobmsg_add_u8(b, "pending", wdev->state == IFS_SETUP || wdev->state == IFS_TEARDOWN);
667 blobmsg_add_u8(b, "autostart", wdev->autostart);
668 i = blobmsg_open_table(b, "interfaces");
669 vlist_for_each_element(&wdev->interfaces, iface, node)
670 wireless_interface_status(iface, b);
671 blobmsg_close_table(b, i);
672 blobmsg_close_table(b, c);
676 wireless_interface_set_data(struct wireless_interface *vif)
682 static const struct blobmsg_policy data_policy[__VIF_DATA_MAX] = {
683 [VIF_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
685 struct blob_attr *tb[__VIF_DATA_MAX];
686 struct blob_attr *cur;
688 blobmsg_parse(data_policy, __VIF_DATA_MAX, tb,
689 blobmsg_data(vif->data), blobmsg_data_len(vif->data));
691 if ((cur = tb[VIF_DATA_IFNAME]))
692 vif->ifname = blobmsg_data(cur);
696 wireless_device_add_process(struct wireless_device *wdev, struct blob_attr *data)
704 static const struct blobmsg_policy proc_policy[__PROC_ATTR_MAX] = {
705 [PROC_ATTR_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
706 [PROC_ATTR_EXE] = { .name = "exe", .type = BLOBMSG_TYPE_STRING },
707 [PROC_ATTR_REQUIRED] = { .name = "required", .type = BLOBMSG_TYPE_BOOL },
709 struct blob_attr *tb[__PROC_ATTR_MAX];
710 struct wireless_process *proc;
714 return UBUS_STATUS_INVALID_ARGUMENT;
716 blobmsg_parse(proc_policy, __PROC_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
717 if (!tb[PROC_ATTR_PID] || !tb[PROC_ATTR_EXE])
718 return UBUS_STATUS_INVALID_ARGUMENT;
720 proc = calloc_a(sizeof(*proc),
721 &name, strlen(blobmsg_data(tb[PROC_ATTR_EXE])) + 1);
723 proc->pid = blobmsg_get_u32(tb[PROC_ATTR_PID]);
724 proc->exe = strcpy(name, blobmsg_data(tb[PROC_ATTR_EXE]));
726 if (tb[PROC_ATTR_REQUIRED])
727 proc->required = blobmsg_get_bool(tb[PROC_ATTR_REQUIRED]);
729 D(WIRELESS, "Wireless device '%s' add pid %d\n", wdev->name, proc->pid);
730 list_add(&proc->list, &wdev->script_proc);
731 uloop_timeout_set(&wdev->script_check, 0);
737 wireless_device_process_kill_all(struct wireless_device *wdev, struct blob_attr *data,
738 struct ubus_request_data *req)
745 static const struct blobmsg_policy kill_policy[__KILL_ATTR_MAX] = {
746 [KILL_ATTR_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
747 [KILL_ATTR_IMMEDIATE] = { .name = "immediate", .type = BLOBMSG_TYPE_BOOL },
749 struct blob_attr *tb[__KILL_ATTR_MAX];
750 struct blob_attr *cur;
751 bool immediate = false;
752 int signal = SIGTERM;
754 blobmsg_parse(kill_policy, __KILL_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
756 if ((cur = tb[KILL_ATTR_SIGNAL]))
757 signal = blobmsg_get_u32(cur);
759 if ((cur = tb[KILL_ATTR_IMMEDIATE]))
760 immediate = blobmsg_get_u32(cur);
762 if (wdev->state != IFS_TEARDOWN || wdev->kill_request)
763 return UBUS_STATUS_PERMISSION_DENIED;
765 wireless_process_kill_all(wdev, signal, immediate);
767 if (list_empty(&wdev->script_proc))
770 wdev->kill_request = calloc(1, sizeof(*wdev->kill_request));
771 ubus_defer_request(ubus_ctx, req, wdev->kill_request);
777 wireless_device_set_retry(struct wireless_device *wdev, struct blob_attr *data)
779 static const struct blobmsg_policy retry_policy = {
780 .name = "retry", .type = BLOBMSG_TYPE_INT32
782 struct blob_attr *val;
784 blobmsg_parse(&retry_policy, 1, &val, blobmsg_data(data), blobmsg_data_len(data));
786 return UBUS_STATUS_INVALID_ARGUMENT;
788 wdev->retry = blobmsg_get_u32(val);
794 NOTIFY_CMD_SET_DATA = 1,
795 NOTIFY_CMD_PROCESS_ADD = 2,
796 NOTIFY_CMD_PROCESS_KILL_ALL = 3,
797 NOTIFY_CMD_SET_RETRY = 4,
801 wireless_device_notify(struct wireless_device *wdev, struct blob_attr *data,
802 struct ubus_request_data *req)
810 static const struct blobmsg_policy notify_policy[__NOTIFY_MAX] = {
811 [NOTIFY_ATTR_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_INT32 },
812 [NOTIFY_ATTR_VIF] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
813 [NOTIFY_ATTR_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
815 struct wireless_interface *vif = NULL;
816 struct blob_attr *tb[__NOTIFY_MAX];
817 struct blob_attr *cur, **pdata;
819 blobmsg_parse(notify_policy, __NOTIFY_MAX, tb, blob_data(data), blob_len(data));
821 if (!tb[NOTIFY_ATTR_COMMAND])
822 return UBUS_STATUS_INVALID_ARGUMENT;
824 if ((cur = tb[NOTIFY_ATTR_VIF]) != NULL) {
825 vif = vlist_find(&wdev->interfaces, blobmsg_data(cur), vif, node);
827 return UBUS_STATUS_NOT_FOUND;
830 cur = tb[NOTIFY_ATTR_DATA];
832 return UBUS_STATUS_INVALID_ARGUMENT;
834 switch (blobmsg_get_u32(tb[NOTIFY_ATTR_COMMAND])) {
837 return UBUS_STATUS_INVALID_ARGUMENT;
839 if (wdev->state != IFS_SETUP)
840 return UBUS_STATUS_PERMISSION_DENIED;
845 wireless_device_mark_up(wdev);
847 case NOTIFY_CMD_SET_DATA:
854 return UBUS_STATUS_INVALID_ARGUMENT;
856 *pdata = blob_memdup(cur);
858 wireless_interface_set_data(vif);
860 case NOTIFY_CMD_PROCESS_ADD:
861 return wireless_device_add_process(wdev, cur);
862 case NOTIFY_CMD_PROCESS_KILL_ALL:
863 return wireless_device_process_kill_all(wdev, cur, req);
864 case NOTIFY_CMD_SET_RETRY:
865 return wireless_device_set_retry(wdev, cur);
867 return UBUS_STATUS_INVALID_ARGUMENT;
874 wireless_start_pending(void)
876 struct wireless_device *wdev;
878 vlist_for_each_element(&wireless_devices, wdev, node)
880 __wireless_device_set_up(wdev);