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)
200 D(WIRELESS, "Cancel wireless device '%s' setup\n", wdev->name);
202 uloop_timeout_set(&wdev->timeout, 10 * 1000);
206 wireless_device_run_handler(struct wireless_device *wdev, bool up)
208 const char *action = up ? "setup" : "teardown";
212 int fds[2] = { -1, -1 };
214 D(WIRELESS, "Wireless device '%s' run %s handler\n", wdev->name, action);
215 prepare_config(wdev, &b, up);
216 config = blobmsg_format_json(b.head, true);
218 argv[i++] = wdev->drv->script;
219 argv[i++] = wdev->drv->name;
221 argv[i++] = wdev->name;
225 if (up && pipe(fds) == 0) {
226 wdev->script_proc_fd.fd = fds[0];
227 uloop_fd_add(&wdev->script_proc_fd,
228 ULOOP_READ | ULOOP_EDGE_TRIGGER);
231 netifd_start_process(argv, NULL, &wdev->script_task);
240 __wireless_device_set_up(struct wireless_device *wdev)
242 if (wdev->state != IFS_DOWN || config_init)
245 wdev->state = IFS_SETUP;
246 wireless_device_run_handler(wdev, true);
250 wireless_device_mark_down(struct wireless_device *wdev)
252 struct wireless_interface *vif;
254 D(WIRELESS, "Wireless device '%s' is now down\n", wdev->name);
256 vlist_for_each_element(&wdev->interfaces, vif, node)
257 wireless_interface_handle_link(vif, false);
259 wireless_process_kill_all(wdev, SIGTERM, true);
261 wdev->state = IFS_DOWN;
262 wireless_device_free_state(wdev);
265 __wireless_device_set_up(wdev);
269 wireless_device_mark_up(struct wireless_device *wdev)
271 struct wireless_interface *vif;
273 D(WIRELESS, "Wireless device '%s' is now up\n", wdev->name);
274 wdev->state = IFS_UP;
275 vlist_for_each_element(&wdev->interfaces, vif, node)
276 wireless_interface_handle_link(vif, true);
280 wireless_device_setup_timeout(struct uloop_timeout *timeout)
282 struct wireless_device *wdev = container_of(timeout, struct wireless_device, timeout);
284 netifd_kill_process(&wdev->script_task);
285 wdev->script_task.cb(&wdev->script_task, -1);
286 wireless_device_mark_down(wdev);
290 wireless_device_set_up(struct wireless_device *wdev)
292 wdev->retry = WIRELESS_SETUP_RETRY;
293 wdev->autostart = true;
294 __wireless_device_set_up(wdev);
298 __wireless_device_set_down(struct wireless_device *wdev)
300 if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN)
303 if (wdev->script_task.uloop.pending) {
304 wireless_device_setup_cancel(wdev);
308 wdev->state = IFS_TEARDOWN;
309 wireless_device_run_handler(wdev, false);
313 wireless_device_retry_setup(struct wireless_device *wdev)
315 if (--wdev->retry < 0)
316 wdev->autostart = false;
318 __wireless_device_set_down(wdev);
322 wireless_device_script_task_cb(struct netifd_process *proc, int ret)
324 struct wireless_device *wdev = container_of(proc, struct wireless_device, script_task);
326 switch (wdev->state) {
328 wireless_device_retry_setup(wdev);
331 wireless_device_mark_down(wdev);
339 wireless_device_set_down(struct wireless_device *wdev)
341 wdev->autostart = false;
342 __wireless_device_set_down(wdev);
346 wireless_device_free(struct wireless_device *wdev)
348 vlist_flush_all(&wdev->interfaces);
354 wdev_handle_config_change(struct wireless_device *wdev)
356 enum interface_config_state state = wdev->config_state;
358 wdev->config_state = IFC_NORMAL;
364 __wireless_device_set_up(wdev);
367 wireless_device_free(wdev);
373 wdev_set_config_state(struct wireless_device *wdev, enum interface_config_state s)
375 enum interface_config_state old_state = wdev->config_state;
377 wdev->config_state = s;
378 if (old_state != IFC_NORMAL)
381 if (wdev->state == IFS_DOWN)
382 wdev_handle_config_change(wdev);
384 __wireless_device_set_down(wdev);
388 wdev_change_config(struct wireless_device *wdev, struct wireless_device *wd_new)
390 struct blob_attr *new_config = wd_new->config;
394 if (blob_attr_equal(wdev->config, new_config))
397 D(WIRELESS, "Update configuration of wireless device '%s'\n", wdev->name);
399 wdev->config = blob_memdup(new_config);
400 wdev_set_config_state(wdev, IFC_RELOAD);
404 wdev_create(struct wireless_device *wdev)
406 wdev->retry = WIRELESS_SETUP_RETRY;
407 wdev->config = blob_memdup(wdev->config);
411 wdev_update(struct vlist_tree *tree, struct vlist_node *node_new,
412 struct vlist_node *node_old)
414 struct wireless_device *wd_old = container_of(node_old, struct wireless_device, node);
415 struct wireless_device *wd_new = container_of(node_new, struct wireless_device, node);
417 if (wd_old && wd_new) {
418 wdev_change_config(wd_old, wd_new);
420 D(WIRELESS, "Delete wireless device '%s'\n", wd_old->name);
421 wdev_set_config_state(wd_old, IFC_REMOVE);
423 D(WIRELESS, "Create wireless device '%s'\n", wd_new->name);
429 wireless_add_handler(const char *script, const char *name, json_object *obj)
431 struct wireless_driver *drv;
432 char *name_str, *script_str;
433 json_object *dev_config_obj, *iface_config_obj;
434 struct uci_blob_param_list *dev_config, *iface_config;
436 dev_config_obj = json_get_field(obj, "device", json_type_array);
437 iface_config_obj = json_get_field(obj, "iface", json_type_array);
439 if (!dev_config_obj || !iface_config_obj)
442 drv = calloc_a(sizeof(*drv),
443 &name_str, strlen(name) + 1,
444 &script_str, strlen(script) + 1,
445 &dev_config, sizeof(*dev_config) + sizeof(void *),
446 &iface_config, sizeof(*iface_config) + sizeof(void *));
448 drv->name = strcpy(name_str, name);
449 drv->script = strcpy(script_str, script);
451 dev_config->n_next = 1;
452 dev_config->next[0] = &wdev_param;
453 drv->device.config = dev_config;
455 iface_config->n_next = 1;
456 iface_config->next[0] = &vif_param;
457 drv->interface.config = iface_config;
459 drv->device.buf = netifd_handler_parse_config(drv->device.config, dev_config_obj);
460 drv->interface.buf = netifd_handler_parse_config(drv->interface.config, iface_config_obj);
462 drv->node.key = drv->name;
463 avl_insert(&wireless_drivers, &drv->node);
464 D(WIRELESS, "Add handler for script %s: %s\n", script, name);
468 wireless_init_list(void)
470 vlist_init(&wireless_devices, avl_strcmp, wdev_update);
471 wireless_devices.keep_old = true;
472 wireless_devices.no_delete = true;
474 avl_init(&wireless_drivers, avl_strcmp, false, NULL);
475 drv_fd = netifd_open_subdir("wireless");
479 netifd_init_script_handlers(drv_fd, wireless_add_handler);
483 wireless_interface_init_config(struct wireless_interface *vif)
485 struct blob_attr *tb[__VIF_ATTR_MAX];
486 struct blob_attr *cur;
489 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(vif->config), blob_len(vif->config));
491 if ((cur = tb[VIF_ATTR_NETWORK]))
492 vif->network = blobmsg_data(cur);
496 vif_update(struct vlist_tree *tree, struct vlist_node *node_new,
497 struct vlist_node *node_old)
499 struct wireless_interface *vif_old = container_of(node_old, struct wireless_interface, node);
500 struct wireless_interface *vif_new = container_of(node_new, struct wireless_interface, node);
501 struct wireless_device *wdev;
504 wdev = vif_old->wdev;
506 wdev = vif_new->wdev;
508 if (vif_old && vif_new) {
509 vif_old->section = vif_new->section;
510 if (blob_attr_equal(vif_old->config, vif_new->config)) {
515 D(WIRELESS, "Update wireless interface %s on device %s\n", vif_new->name, wdev->name);
516 free(vif_old->config);
517 vif_old->config = blob_memdup(vif_new->config);
518 wireless_interface_init_config(vif_old);
520 } else if (vif_new) {
521 D(WIRELESS, "Create new wireless interface %s on device %s\n", vif_new->name, wdev->name);
522 vif_new->config = blob_memdup(vif_new->config);
523 wireless_interface_init_config(vif_new);
524 } else if (vif_old) {
525 D(WIRELESS, "Delete wireless interface %s on device %s\n", vif_old->name, wdev->name);
526 free(vif_old->config);
530 wdev_set_config_state(wdev, IFC_RELOAD);
534 wireless_proc_poll_fd(struct uloop_fd *fd, unsigned int events)
536 struct wireless_device *wdev = container_of(fd, struct wireless_device, script_proc_fd);
540 int b = read(fd->fd, buf, sizeof(buf));
556 uloop_timeout_set(&wdev->script_check, 0);
557 wireless_close_script_proc_fd(wdev);
561 wireless_device_check_script_tasks(struct uloop_timeout *timeout)
563 struct wireless_device *wdev = container_of(timeout, struct wireless_device, script_check);
564 struct wireless_process *proc, *tmp;
565 bool restart = false;
567 list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
568 if (wireless_process_check(proc))
571 D(WIRELESS, "Wireless device '%s' pid %d has terminated\n", wdev->name, proc->pid);
575 wireless_process_free(wdev, proc);
579 wireless_device_retry_setup(wdev);
581 uloop_timeout_set(&wdev->script_check, 1000);
585 wireless_device_create(struct wireless_driver *drv, const char *name, struct blob_attr *data)
587 struct wireless_device *wdev;
589 struct blob_attr *disabled;
591 blobmsg_parse(&wdev_policy, 1, &disabled, blob_data(data), blob_len(data));
592 if (disabled && blobmsg_get_bool(disabled))
595 wdev = calloc_a(sizeof(*wdev), &name_buf, strlen(name) + 1);
597 wdev->state = IFS_DOWN;
598 wdev->config_state = IFC_NORMAL;
599 wdev->name = strcpy(name_buf, name);
601 wdev->config_autostart = true;
602 wdev->autostart = wdev->config_autostart;
603 INIT_LIST_HEAD(&wdev->script_proc);
604 vlist_init(&wdev->interfaces, avl_strcmp, vif_update);
605 wdev->interfaces.keep_old = true;
606 wdev->interfaces.no_delete = true;
607 vlist_add(&wireless_devices, &wdev->node, wdev->name);
609 wdev->timeout.cb = wireless_device_setup_timeout;
610 wdev->script_task.cb = wireless_device_script_task_cb;
611 wdev->script_task.dir_fd = drv_fd;
612 wdev->script_task.log_prefix = wdev->name;
614 wdev->script_proc_fd.fd = -1;
615 wdev->script_proc_fd.cb = wireless_proc_poll_fd;
617 wdev->script_check.cb = wireless_device_check_script_tasks;
620 void wireless_interface_create(struct wireless_device *wdev, struct blob_attr *data, const char *section)
622 struct wireless_interface *vif;
623 struct blob_attr *tb[__VIF_ATTR_MAX];
624 struct blob_attr *cur;
628 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(data), blob_len(data));
630 cur = tb[VIF_ATTR_DISABLED];
631 if (cur && blobmsg_get_bool(cur))
634 sprintf(name, "%d", wdev->vif_idx++);
636 vif = calloc_a(sizeof(*vif), &name_buf, strlen(name) + 1);
637 vif->name = strcpy(name_buf, name);
640 vif->section = section;
641 vlist_add(&wdev->interfaces, &vif->node, vif->name);
645 wireless_interface_status(struct wireless_interface *iface, struct blob_buf *b)
649 i = blobmsg_open_table(b, iface->name);
651 blobmsg_add_string(b, "section", iface->section);
653 blobmsg_add_string(b, "ifname", iface->ifname);
655 blob_put_raw(b, blob_data(iface->data), blob_len(iface->data));
656 blobmsg_close_table(b, i);
660 wireless_device_status(struct wireless_device *wdev, struct blob_buf *b)
662 struct wireless_interface *iface;
665 c = blobmsg_open_table(b, wdev->name);
666 blobmsg_add_u8(b, "up", wdev->state == IFS_UP);
667 blobmsg_add_u8(b, "pending", wdev->state == IFS_SETUP || wdev->state == IFS_TEARDOWN);
668 blobmsg_add_u8(b, "autostart", wdev->autostart);
669 i = blobmsg_open_table(b, "interfaces");
670 vlist_for_each_element(&wdev->interfaces, iface, node)
671 wireless_interface_status(iface, b);
672 blobmsg_close_table(b, i);
673 blobmsg_close_table(b, c);
677 wireless_interface_set_data(struct wireless_interface *vif)
683 static const struct blobmsg_policy data_policy[__VIF_DATA_MAX] = {
684 [VIF_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
686 struct blob_attr *tb[__VIF_DATA_MAX];
687 struct blob_attr *cur;
689 blobmsg_parse(data_policy, __VIF_DATA_MAX, tb,
690 blobmsg_data(vif->data), blobmsg_data_len(vif->data));
692 if ((cur = tb[VIF_DATA_IFNAME]))
693 vif->ifname = blobmsg_data(cur);
697 wireless_device_add_process(struct wireless_device *wdev, struct blob_attr *data)
705 static const struct blobmsg_policy proc_policy[__PROC_ATTR_MAX] = {
706 [PROC_ATTR_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
707 [PROC_ATTR_EXE] = { .name = "exe", .type = BLOBMSG_TYPE_STRING },
708 [PROC_ATTR_REQUIRED] = { .name = "required", .type = BLOBMSG_TYPE_BOOL },
710 struct blob_attr *tb[__PROC_ATTR_MAX];
711 struct wireless_process *proc;
716 return UBUS_STATUS_INVALID_ARGUMENT;
718 blobmsg_parse(proc_policy, __PROC_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
719 if (!tb[PROC_ATTR_PID] || !tb[PROC_ATTR_EXE])
720 return UBUS_STATUS_INVALID_ARGUMENT;
722 pid = blobmsg_get_u32(tb[PROC_ATTR_PID]);
724 return UBUS_STATUS_INVALID_ARGUMENT;
726 proc = calloc_a(sizeof(*proc),
727 &name, strlen(blobmsg_data(tb[PROC_ATTR_EXE])) + 1);
730 proc->exe = strcpy(name, blobmsg_data(tb[PROC_ATTR_EXE]));
732 if (tb[PROC_ATTR_REQUIRED])
733 proc->required = blobmsg_get_bool(tb[PROC_ATTR_REQUIRED]);
735 D(WIRELESS, "Wireless device '%s' add pid %d\n", wdev->name, proc->pid);
736 list_add(&proc->list, &wdev->script_proc);
737 uloop_timeout_set(&wdev->script_check, 0);
743 wireless_device_process_kill_all(struct wireless_device *wdev, struct blob_attr *data,
744 struct ubus_request_data *req)
751 static const struct blobmsg_policy kill_policy[__KILL_ATTR_MAX] = {
752 [KILL_ATTR_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
753 [KILL_ATTR_IMMEDIATE] = { .name = "immediate", .type = BLOBMSG_TYPE_BOOL },
755 struct blob_attr *tb[__KILL_ATTR_MAX];
756 struct blob_attr *cur;
757 bool immediate = false;
758 int signal = SIGTERM;
760 blobmsg_parse(kill_policy, __KILL_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
762 if ((cur = tb[KILL_ATTR_SIGNAL]))
763 signal = blobmsg_get_u32(cur);
765 if ((cur = tb[KILL_ATTR_IMMEDIATE]))
766 immediate = blobmsg_get_bool(cur);
768 if (wdev->state != IFS_TEARDOWN || wdev->kill_request)
769 return UBUS_STATUS_PERMISSION_DENIED;
771 wireless_process_kill_all(wdev, signal, immediate);
773 if (list_empty(&wdev->script_proc))
776 wdev->kill_request = calloc(1, sizeof(*wdev->kill_request));
777 ubus_defer_request(ubus_ctx, req, wdev->kill_request);
783 wireless_device_set_retry(struct wireless_device *wdev, struct blob_attr *data)
785 static const struct blobmsg_policy retry_policy = {
786 .name = "retry", .type = BLOBMSG_TYPE_INT32
788 struct blob_attr *val;
790 blobmsg_parse(&retry_policy, 1, &val, blobmsg_data(data), blobmsg_data_len(data));
792 return UBUS_STATUS_INVALID_ARGUMENT;
794 wdev->retry = blobmsg_get_u32(val);
800 NOTIFY_CMD_SET_DATA = 1,
801 NOTIFY_CMD_PROCESS_ADD = 2,
802 NOTIFY_CMD_PROCESS_KILL_ALL = 3,
803 NOTIFY_CMD_SET_RETRY = 4,
807 wireless_device_notify(struct wireless_device *wdev, struct blob_attr *data,
808 struct ubus_request_data *req)
816 static const struct blobmsg_policy notify_policy[__NOTIFY_MAX] = {
817 [NOTIFY_ATTR_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_INT32 },
818 [NOTIFY_ATTR_VIF] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
819 [NOTIFY_ATTR_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
821 struct wireless_interface *vif = NULL;
822 struct blob_attr *tb[__NOTIFY_MAX];
823 struct blob_attr *cur, **pdata;
825 blobmsg_parse(notify_policy, __NOTIFY_MAX, tb, blob_data(data), blob_len(data));
827 if (!tb[NOTIFY_ATTR_COMMAND])
828 return UBUS_STATUS_INVALID_ARGUMENT;
830 if ((cur = tb[NOTIFY_ATTR_VIF]) != NULL) {
831 vif = vlist_find(&wdev->interfaces, blobmsg_data(cur), vif, node);
833 return UBUS_STATUS_NOT_FOUND;
836 cur = tb[NOTIFY_ATTR_DATA];
838 return UBUS_STATUS_INVALID_ARGUMENT;
840 switch (blobmsg_get_u32(tb[NOTIFY_ATTR_COMMAND])) {
843 return UBUS_STATUS_INVALID_ARGUMENT;
845 if (wdev->state != IFS_SETUP)
846 return UBUS_STATUS_PERMISSION_DENIED;
851 wireless_device_mark_up(wdev);
853 case NOTIFY_CMD_SET_DATA:
860 return UBUS_STATUS_INVALID_ARGUMENT;
862 *pdata = blob_memdup(cur);
864 wireless_interface_set_data(vif);
866 case NOTIFY_CMD_PROCESS_ADD:
867 return wireless_device_add_process(wdev, cur);
868 case NOTIFY_CMD_PROCESS_KILL_ALL:
869 return wireless_device_process_kill_all(wdev, cur, req);
870 case NOTIFY_CMD_SET_RETRY:
871 return wireless_device_set_retry(wdev, cur);
873 return UBUS_STATUS_INVALID_ARGUMENT;
880 wireless_start_pending(void)
882 struct wireless_device *wdev;
884 vlist_for_each_element(&wireless_devices, wdev, node)
886 __wireless_device_set_up(wdev);