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 list_del(&proc->list);
128 if (list_empty(&wdev->script_proc))
129 wireless_complete_kill_request(wdev);
133 wireless_close_script_proc_fd(struct wireless_device *wdev)
135 if (wdev->script_proc_fd.fd < 0)
138 uloop_fd_delete(&wdev->script_proc_fd);
139 close(wdev->script_proc_fd.fd);
140 wdev->script_proc_fd.fd = -1;
144 wireless_process_kill_all(struct wireless_device *wdev, int signal, bool free)
146 struct wireless_process *proc, *tmp;
148 list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
149 bool check = wireless_process_check(proc);
152 kill(proc->pid, signal);
155 wireless_process_free(wdev, proc);
159 wireless_close_script_proc_fd(wdev);
163 wireless_device_free_state(struct wireless_device *wdev)
165 struct wireless_interface *vif;
167 wireless_complete_kill_request(wdev);
170 vlist_for_each_element(&wdev->interfaces, vif, node) {
177 static void wireless_interface_handle_link(struct wireless_interface *vif, bool up)
179 struct interface *iface;
181 if (!vif->network || !vif->ifname)
184 iface = vlist_find(&interfaces, vif->network, iface, node);
188 interface_handle_link(iface, vif->ifname, up);
192 wireless_device_setup_cancel(struct wireless_device *wdev)
198 uloop_timeout_set(&wdev->timeout, 10 * 1000);
202 wireless_device_run_handler(struct wireless_device *wdev, bool up)
204 const char *action = up ? "setup" : "teardown";
208 int fds[2] = { -1, -1 };
210 prepare_config(wdev, &b, up);
211 config = blobmsg_format_json(b.head, true);
213 argv[i++] = wdev->drv->script;
214 argv[i++] = wdev->drv->name;
216 argv[i++] = wdev->name;
220 if (up && pipe(fds) == 0) {
221 wdev->script_proc_fd.fd = fds[0];
222 uloop_fd_add(&wdev->script_proc_fd,
223 ULOOP_READ | ULOOP_EDGE_TRIGGER);
226 netifd_start_process(argv, NULL, &wdev->script_task);
235 __wireless_device_set_up(struct wireless_device *wdev)
237 if (wdev->state != IFS_DOWN || config_init)
240 wdev->state = IFS_SETUP;
241 wireless_device_run_handler(wdev, true);
245 wireless_device_mark_down(struct wireless_device *wdev)
247 struct wireless_interface *vif;
249 vlist_for_each_element(&wdev->interfaces, vif, node)
250 wireless_interface_handle_link(vif, false);
252 wireless_process_kill_all(wdev, SIGTERM, true);
254 wdev->state = IFS_DOWN;
255 wireless_device_free_state(wdev);
258 __wireless_device_set_up(wdev);
262 wireless_device_mark_up(struct wireless_device *wdev)
264 struct wireless_interface *vif;
266 wdev->state = IFS_UP;
267 vlist_for_each_element(&wdev->interfaces, vif, node)
268 wireless_interface_handle_link(vif, true);
272 wireless_device_setup_timeout(struct uloop_timeout *timeout)
274 struct wireless_device *wdev = container_of(timeout, struct wireless_device, timeout);
276 netifd_kill_process(&wdev->script_task);
277 wdev->script_task.cb(&wdev->script_task, -1);
278 wireless_device_mark_down(wdev);
282 wireless_device_set_up(struct wireless_device *wdev)
284 wdev->retry = WIRELESS_SETUP_RETRY;
285 wdev->autostart = true;
286 __wireless_device_set_up(wdev);
290 __wireless_device_set_down(struct wireless_device *wdev)
292 if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN)
295 if (wdev->script_task.uloop.pending) {
296 wireless_device_setup_cancel(wdev);
300 wdev->state = IFS_TEARDOWN;
301 wireless_device_run_handler(wdev, false);
305 wireless_device_retry_setup(struct wireless_device *wdev)
307 if (--wdev->retry < 0)
308 wdev->autostart = false;
310 __wireless_device_set_down(wdev);
314 wireless_device_script_task_cb(struct netifd_process *proc, int ret)
316 struct wireless_device *wdev = container_of(proc, struct wireless_device, script_task);
318 switch (wdev->state) {
320 wireless_device_retry_setup(wdev);
323 wireless_device_mark_down(wdev);
331 wireless_device_set_down(struct wireless_device *wdev)
333 wdev->autostart = false;
334 __wireless_device_set_down(wdev);
338 wireless_device_free(struct wireless_device *wdev)
340 vlist_flush_all(&wdev->interfaces);
346 wdev_handle_config_change(struct wireless_device *wdev)
348 switch(wdev->config_state) {
353 __wireless_device_set_up(wdev);
356 wireless_device_free(wdev);
362 wdev_set_config_state(struct wireless_device *wdev, enum interface_config_state s)
364 enum interface_config_state old_state = wdev->config_state;
366 wdev->config_state = s;
367 if (old_state != IFC_NORMAL)
370 if (wdev->state == IFS_DOWN)
371 wdev_handle_config_change(wdev);
373 __wireless_device_set_down(wdev);
377 wdev_change_config(struct wireless_device *wdev, struct wireless_device *wd_new)
379 struct blob_attr *new_config = wd_new->config;
383 if (blob_attr_equal(wdev->config, new_config))
386 D(WIRELESS, "Update configuration of wireless device '%s'\n", wdev->name);
388 wdev->config = blob_memdup(new_config);
389 wdev_set_config_state(wdev, IFC_RELOAD);
393 wdev_create(struct wireless_device *wdev)
395 wdev->retry = WIRELESS_SETUP_RETRY;
396 wdev->config = blob_memdup(wdev->config);
400 wdev_update(struct vlist_tree *tree, struct vlist_node *node_new,
401 struct vlist_node *node_old)
403 struct wireless_device *wd_old = container_of(node_old, struct wireless_device, node);
404 struct wireless_device *wd_new = container_of(node_new, struct wireless_device, node);
406 if (wd_old && wd_new) {
407 wdev_change_config(wd_old, wd_new);
409 D(WIRELESS, "Delete wireless device '%s'\n", wd_old->name);
410 wdev_set_config_state(wd_old, IFC_REMOVE);
412 D(WIRELESS, "Create wireless device '%s'\n", wd_new->name);
418 wireless_add_handler(const char *script, const char *name, json_object *obj)
420 struct wireless_driver *drv;
421 char *name_str, *script_str;
422 json_object *dev_config_obj, *iface_config_obj;
423 struct uci_blob_param_list *dev_config, *iface_config;
425 dev_config_obj = json_get_field(obj, "device", json_type_array);
426 iface_config_obj = json_get_field(obj, "iface", json_type_array);
428 if (!dev_config_obj || !iface_config_obj)
431 drv = calloc_a(sizeof(*drv),
432 &name_str, strlen(name) + 1,
433 &script_str, strlen(script) + 1,
434 &dev_config, sizeof(*dev_config) + sizeof(void *),
435 &iface_config, sizeof(*iface_config) + sizeof(void *));
437 drv->name = strcpy(name_str, name);
438 drv->script = strcpy(script_str, script);
440 dev_config->n_next = 1;
441 dev_config->next[0] = &wdev_param;
442 drv->device.config = dev_config;
444 iface_config->n_next = 1;
445 iface_config->next[0] = &vif_param;
446 drv->interface.config = iface_config;
448 drv->device.buf = netifd_handler_parse_config(drv->device.config, dev_config_obj);
449 drv->interface.buf = netifd_handler_parse_config(drv->interface.config, iface_config_obj);
451 drv->node.key = drv->name;
452 avl_insert(&wireless_drivers, &drv->node);
453 D(WIRELESS, "Add handler for script %s: %s\n", script, name);
457 wireless_init_list(void)
459 vlist_init(&wireless_devices, avl_strcmp, wdev_update);
460 wireless_devices.keep_old = true;
461 wireless_devices.no_delete = true;
463 avl_init(&wireless_drivers, avl_strcmp, false, NULL);
464 drv_fd = netifd_open_subdir("wireless");
468 netifd_init_script_handlers(drv_fd, wireless_add_handler);
472 wireless_interface_init_config(struct wireless_interface *vif)
474 struct blob_attr *tb[__VIF_ATTR_MAX];
475 struct blob_attr *cur;
478 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(vif->config), blob_len(vif->config));
480 if ((cur = tb[VIF_ATTR_NETWORK]))
481 vif->network = blobmsg_data(cur);
485 vif_update(struct vlist_tree *tree, struct vlist_node *node_new,
486 struct vlist_node *node_old)
488 struct wireless_interface *vif_old = container_of(node_old, struct wireless_interface, node);
489 struct wireless_interface *vif_new = container_of(node_new, struct wireless_interface, node);
490 struct wireless_device *wdev;
493 wdev = vif_old->wdev;
495 wdev = vif_new->wdev;
497 if (vif_old && vif_new) {
498 if (blob_attr_equal(vif_old->config, vif_new->config)) {
503 D(WIRELESS, "Update wireless interface %s on device %s\n", vif_new->name, wdev->name);
504 free(vif_old->config);
505 vif_old->config = blob_memdup(vif_new->config);
506 wireless_interface_init_config(vif_old);
508 vif_old->section = vif_new->section;
509 } else if (vif_new) {
510 D(WIRELESS, "Create new wireless interface %s on device %s\n", vif_new->name, wdev->name);
511 vif_new->config = blob_memdup(vif_new->config);
512 wireless_interface_init_config(vif_new);
513 } else if (vif_old) {
514 D(WIRELESS, "Delete wireless interface %s on device %s\n", vif_old->name, wdev->name);
515 free(vif_old->config);
519 wdev_set_config_state(wdev, IFC_RELOAD);
523 wireless_proc_poll_fd(struct uloop_fd *fd, unsigned int events)
525 struct wireless_device *wdev = container_of(fd, struct wireless_device, script_proc_fd);
529 int b = read(fd->fd, buf, sizeof(buf));
545 uloop_timeout_set(&wdev->script_check, 0);
546 wireless_close_script_proc_fd(wdev);
550 wireless_device_check_script_tasks(struct uloop_timeout *timeout)
552 struct wireless_device *wdev = container_of(timeout, struct wireless_device, script_check);
553 struct wireless_process *proc, *tmp;
554 bool restart = false;
556 list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
557 if (wireless_process_check(proc))
563 wireless_process_free(wdev, proc);
567 wireless_device_retry_setup(wdev);
569 uloop_timeout_set(&wdev->script_check, 1000);
573 wireless_device_create(struct wireless_driver *drv, const char *name, struct blob_attr *data)
575 struct wireless_device *wdev;
577 struct blob_attr *disabled;
579 blobmsg_parse(&wdev_policy, 1, &disabled, blob_data(data), blob_len(data));
580 if (disabled && blobmsg_get_bool(disabled))
583 wdev = calloc_a(sizeof(*wdev), &name_buf, strlen(name) + 1);
585 wdev->state = IFS_DOWN;
586 wdev->config_state = IFC_NORMAL;
587 wdev->name = strcpy(name_buf, name);
589 wdev->config_autostart = true;
590 wdev->autostart = wdev->config_autostart;
591 INIT_LIST_HEAD(&wdev->script_proc);
592 vlist_init(&wdev->interfaces, avl_strcmp, vif_update);
593 wdev->interfaces.keep_old = true;
594 wdev->interfaces.no_delete = true;
595 vlist_add(&wireless_devices, &wdev->node, wdev->name);
597 wdev->timeout.cb = wireless_device_setup_timeout;
598 wdev->script_task.cb = wireless_device_script_task_cb;
599 wdev->script_task.dir_fd = drv_fd;
600 wdev->script_task.log_prefix = wdev->name;
602 wdev->script_proc_fd.fd = -1;
603 wdev->script_proc_fd.cb = wireless_proc_poll_fd;
605 wdev->script_check.cb = wireless_device_check_script_tasks;
608 void wireless_interface_create(struct wireless_device *wdev, struct blob_attr *data, const char *section)
610 struct wireless_interface *vif;
611 struct blob_attr *tb[__VIF_ATTR_MAX];
612 struct blob_attr *cur;
616 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(data), blob_len(data));
618 cur = tb[VIF_ATTR_DISABLED];
619 if (cur && blobmsg_get_bool(cur))
622 sprintf(name, "%d", wdev->vif_idx++);
624 vif = calloc_a(sizeof(*vif), &name_buf, strlen(name) + 1);
625 vif->name = strcpy(name_buf, name);
628 vif->section = section;
629 vlist_add(&wdev->interfaces, &vif->node, vif->name);
633 wireless_interface_status(struct wireless_interface *iface, struct blob_buf *b)
637 i = blobmsg_open_table(b, iface->name);
639 blobmsg_add_string(b, "section", iface->section);
641 blobmsg_add_string(b, "ifname", iface->ifname);
643 blob_put_raw(b, blob_data(iface->data), blob_len(iface->data));
644 blobmsg_close_table(b, i);
648 wireless_device_status(struct wireless_device *wdev, struct blob_buf *b)
650 struct wireless_interface *iface;
653 c = blobmsg_open_table(b, wdev->name);
654 blobmsg_add_u8(b, "up", wdev->state == IFS_UP);
655 blobmsg_add_u8(b, "pending", wdev->state == IFS_SETUP || wdev->state == IFS_TEARDOWN);
656 blobmsg_add_u8(b, "autostart", wdev->autostart);
657 i = blobmsg_open_table(b, "interfaces");
658 vlist_for_each_element(&wdev->interfaces, iface, node)
659 wireless_interface_status(iface, b);
660 blobmsg_close_table(b, i);
661 blobmsg_close_table(b, c);
665 wireless_interface_set_data(struct wireless_interface *vif)
671 static const struct blobmsg_policy data_policy[__VIF_DATA_MAX] = {
672 [VIF_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
674 struct blob_attr *tb[__VIF_DATA_MAX];
675 struct blob_attr *cur;
677 blobmsg_parse(data_policy, __VIF_DATA_MAX, tb,
678 blobmsg_data(vif->data), blobmsg_data_len(vif->data));
680 if ((cur = tb[VIF_DATA_IFNAME]))
681 vif->ifname = blobmsg_data(cur);
685 wireless_device_add_process(struct wireless_device *wdev, struct blob_attr *data)
693 static const struct blobmsg_policy proc_policy[__PROC_ATTR_MAX] = {
694 [PROC_ATTR_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
695 [PROC_ATTR_EXE] = { .name = "exe", .type = BLOBMSG_TYPE_STRING },
696 [PROC_ATTR_REQUIRED] = { .name = "required", .type = BLOBMSG_TYPE_BOOL },
698 struct blob_attr *tb[__PROC_ATTR_MAX];
699 struct wireless_process *proc;
703 return UBUS_STATUS_INVALID_ARGUMENT;
705 blobmsg_parse(proc_policy, __PROC_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
706 if (!tb[PROC_ATTR_PID] || !tb[PROC_ATTR_EXE])
707 return UBUS_STATUS_INVALID_ARGUMENT;
709 proc = calloc_a(sizeof(*proc),
710 &name, strlen(blobmsg_data(tb[PROC_ATTR_EXE])) + 1);
712 proc->pid = blobmsg_get_u32(tb[PROC_ATTR_PID]);
713 proc->exe = strcpy(name, blobmsg_data(tb[PROC_ATTR_EXE]));
715 if (tb[PROC_ATTR_REQUIRED])
716 proc->required = blobmsg_get_bool(tb[PROC_ATTR_REQUIRED]);
718 list_add(&proc->list, &wdev->script_proc);
719 uloop_timeout_set(&wdev->script_check, 0);
725 wireless_device_process_kill_all(struct wireless_device *wdev, struct blob_attr *data,
726 struct ubus_request_data *req)
733 static const struct blobmsg_policy kill_policy[__KILL_ATTR_MAX] = {
734 [KILL_ATTR_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
735 [KILL_ATTR_IMMEDIATE] = { .name = "immediate", .type = BLOBMSG_TYPE_BOOL },
737 struct blob_attr *tb[__KILL_ATTR_MAX];
738 struct blob_attr *cur;
739 bool immediate = false;
740 int signal = SIGTERM;
742 blobmsg_parse(kill_policy, __KILL_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
744 if ((cur = tb[KILL_ATTR_SIGNAL]))
745 signal = blobmsg_get_u32(cur);
747 if ((cur = tb[KILL_ATTR_IMMEDIATE]))
748 immediate = blobmsg_get_u32(cur);
750 if (wdev->state != IFS_TEARDOWN || wdev->kill_request)
751 return UBUS_STATUS_PERMISSION_DENIED;
753 wireless_process_kill_all(wdev, signal, immediate);
755 if (list_empty(&wdev->script_proc))
758 wdev->kill_request = calloc(1, sizeof(*wdev->kill_request));
759 ubus_defer_request(ubus_ctx, req, wdev->kill_request);
765 wireless_device_set_retry(struct wireless_device *wdev, struct blob_attr *data)
767 static const struct blobmsg_policy retry_policy = {
768 .name = "retry", .type = BLOBMSG_TYPE_INT32
770 struct blob_attr *val;
772 blobmsg_parse(&retry_policy, 1, &val, blobmsg_data(data), blobmsg_data_len(data));
774 return UBUS_STATUS_INVALID_ARGUMENT;
776 wdev->retry = blobmsg_get_u32(val);
782 NOTIFY_CMD_SET_DATA = 1,
783 NOTIFY_CMD_PROCESS_ADD = 2,
784 NOTIFY_CMD_PROCESS_KILL_ALL = 3,
785 NOTIFY_CMD_SET_RETRY = 4,
789 wireless_device_notify(struct wireless_device *wdev, struct blob_attr *data,
790 struct ubus_request_data *req)
798 static const struct blobmsg_policy notify_policy[__NOTIFY_MAX] = {
799 [NOTIFY_ATTR_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_INT32 },
800 [NOTIFY_ATTR_VIF] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
801 [NOTIFY_ATTR_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
803 struct wireless_interface *vif = NULL;
804 struct blob_attr *tb[__NOTIFY_MAX];
805 struct blob_attr *cur, **pdata;
807 blobmsg_parse(notify_policy, __NOTIFY_MAX, tb, blob_data(data), blob_len(data));
809 if (!tb[NOTIFY_ATTR_COMMAND])
810 return UBUS_STATUS_INVALID_ARGUMENT;
812 if ((cur = tb[NOTIFY_ATTR_VIF]) != NULL) {
813 vif = vlist_find(&wdev->interfaces, blobmsg_data(cur), vif, node);
815 return UBUS_STATUS_NOT_FOUND;
818 cur = tb[NOTIFY_ATTR_DATA];
820 return UBUS_STATUS_INVALID_ARGUMENT;
822 switch (blobmsg_get_u32(tb[NOTIFY_ATTR_COMMAND])) {
825 return UBUS_STATUS_INVALID_ARGUMENT;
827 if (wdev->state != IFS_SETUP)
828 return UBUS_STATUS_PERMISSION_DENIED;
833 wireless_device_mark_up(wdev);
835 case NOTIFY_CMD_SET_DATA:
842 return UBUS_STATUS_INVALID_ARGUMENT;
844 *pdata = blob_memdup(cur);
846 wireless_interface_set_data(vif);
848 case NOTIFY_CMD_PROCESS_ADD:
849 return wireless_device_add_process(wdev, cur);
850 case NOTIFY_CMD_PROCESS_KILL_ALL:
851 return wireless_device_process_kill_all(wdev, cur, req);
852 case NOTIFY_CMD_SET_RETRY:
853 return wireless_device_set_retry(wdev, cur);
855 return UBUS_STATUS_INVALID_ARGUMENT;
862 wireless_start_pending(void)
864 struct wireless_device *wdev;
866 vlist_for_each_element(&wireless_devices, wdev, node)
868 __wireless_device_set_up(wdev);