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 switch(wdev->config_state) {
360 __wireless_device_set_up(wdev);
363 wireless_device_free(wdev);
369 wdev_set_config_state(struct wireless_device *wdev, enum interface_config_state s)
371 enum interface_config_state old_state = wdev->config_state;
373 wdev->config_state = s;
374 if (old_state != IFC_NORMAL)
377 if (wdev->state == IFS_DOWN)
378 wdev_handle_config_change(wdev);
380 __wireless_device_set_down(wdev);
384 wdev_change_config(struct wireless_device *wdev, struct wireless_device *wd_new)
386 struct blob_attr *new_config = wd_new->config;
390 if (blob_attr_equal(wdev->config, new_config))
393 D(WIRELESS, "Update configuration of wireless device '%s'\n", wdev->name);
395 wdev->config = blob_memdup(new_config);
396 wdev_set_config_state(wdev, IFC_RELOAD);
400 wdev_create(struct wireless_device *wdev)
402 wdev->retry = WIRELESS_SETUP_RETRY;
403 wdev->config = blob_memdup(wdev->config);
407 wdev_update(struct vlist_tree *tree, struct vlist_node *node_new,
408 struct vlist_node *node_old)
410 struct wireless_device *wd_old = container_of(node_old, struct wireless_device, node);
411 struct wireless_device *wd_new = container_of(node_new, struct wireless_device, node);
413 if (wd_old && wd_new) {
414 wdev_change_config(wd_old, wd_new);
416 D(WIRELESS, "Delete wireless device '%s'\n", wd_old->name);
417 wdev_set_config_state(wd_old, IFC_REMOVE);
419 D(WIRELESS, "Create wireless device '%s'\n", wd_new->name);
425 wireless_add_handler(const char *script, const char *name, json_object *obj)
427 struct wireless_driver *drv;
428 char *name_str, *script_str;
429 json_object *dev_config_obj, *iface_config_obj;
430 struct uci_blob_param_list *dev_config, *iface_config;
432 dev_config_obj = json_get_field(obj, "device", json_type_array);
433 iface_config_obj = json_get_field(obj, "iface", json_type_array);
435 if (!dev_config_obj || !iface_config_obj)
438 drv = calloc_a(sizeof(*drv),
439 &name_str, strlen(name) + 1,
440 &script_str, strlen(script) + 1,
441 &dev_config, sizeof(*dev_config) + sizeof(void *),
442 &iface_config, sizeof(*iface_config) + sizeof(void *));
444 drv->name = strcpy(name_str, name);
445 drv->script = strcpy(script_str, script);
447 dev_config->n_next = 1;
448 dev_config->next[0] = &wdev_param;
449 drv->device.config = dev_config;
451 iface_config->n_next = 1;
452 iface_config->next[0] = &vif_param;
453 drv->interface.config = iface_config;
455 drv->device.buf = netifd_handler_parse_config(drv->device.config, dev_config_obj);
456 drv->interface.buf = netifd_handler_parse_config(drv->interface.config, iface_config_obj);
458 drv->node.key = drv->name;
459 avl_insert(&wireless_drivers, &drv->node);
460 D(WIRELESS, "Add handler for script %s: %s\n", script, name);
464 wireless_init_list(void)
466 vlist_init(&wireless_devices, avl_strcmp, wdev_update);
467 wireless_devices.keep_old = true;
468 wireless_devices.no_delete = true;
470 avl_init(&wireless_drivers, avl_strcmp, false, NULL);
471 drv_fd = netifd_open_subdir("wireless");
475 netifd_init_script_handlers(drv_fd, wireless_add_handler);
479 wireless_interface_init_config(struct wireless_interface *vif)
481 struct blob_attr *tb[__VIF_ATTR_MAX];
482 struct blob_attr *cur;
485 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(vif->config), blob_len(vif->config));
487 if ((cur = tb[VIF_ATTR_NETWORK]))
488 vif->network = blobmsg_data(cur);
492 vif_update(struct vlist_tree *tree, struct vlist_node *node_new,
493 struct vlist_node *node_old)
495 struct wireless_interface *vif_old = container_of(node_old, struct wireless_interface, node);
496 struct wireless_interface *vif_new = container_of(node_new, struct wireless_interface, node);
497 struct wireless_device *wdev;
500 wdev = vif_old->wdev;
502 wdev = vif_new->wdev;
504 if (vif_old && vif_new) {
505 vif_old->section = vif_new->section;
506 if (blob_attr_equal(vif_old->config, vif_new->config)) {
511 D(WIRELESS, "Update wireless interface %s on device %s\n", vif_new->name, wdev->name);
512 free(vif_old->config);
513 vif_old->config = blob_memdup(vif_new->config);
514 wireless_interface_init_config(vif_old);
516 } else if (vif_new) {
517 D(WIRELESS, "Create new wireless interface %s on device %s\n", vif_new->name, wdev->name);
518 vif_new->config = blob_memdup(vif_new->config);
519 wireless_interface_init_config(vif_new);
520 } else if (vif_old) {
521 D(WIRELESS, "Delete wireless interface %s on device %s\n", vif_old->name, wdev->name);
522 free(vif_old->config);
526 wdev_set_config_state(wdev, IFC_RELOAD);
530 wireless_proc_poll_fd(struct uloop_fd *fd, unsigned int events)
532 struct wireless_device *wdev = container_of(fd, struct wireless_device, script_proc_fd);
536 int b = read(fd->fd, buf, sizeof(buf));
552 uloop_timeout_set(&wdev->script_check, 0);
553 wireless_close_script_proc_fd(wdev);
557 wireless_device_check_script_tasks(struct uloop_timeout *timeout)
559 struct wireless_device *wdev = container_of(timeout, struct wireless_device, script_check);
560 struct wireless_process *proc, *tmp;
561 bool restart = false;
563 list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
564 if (wireless_process_check(proc))
567 D(WIRELESS, "Wireless device '%s' pid %d has terminated\n", wdev->name, proc->pid);
571 wireless_process_free(wdev, proc);
575 wireless_device_retry_setup(wdev);
577 uloop_timeout_set(&wdev->script_check, 1000);
581 wireless_device_create(struct wireless_driver *drv, const char *name, struct blob_attr *data)
583 struct wireless_device *wdev;
585 struct blob_attr *disabled;
587 blobmsg_parse(&wdev_policy, 1, &disabled, blob_data(data), blob_len(data));
588 if (disabled && blobmsg_get_bool(disabled))
591 wdev = calloc_a(sizeof(*wdev), &name_buf, strlen(name) + 1);
593 wdev->state = IFS_DOWN;
594 wdev->config_state = IFC_NORMAL;
595 wdev->name = strcpy(name_buf, name);
597 wdev->config_autostart = true;
598 wdev->autostart = wdev->config_autostart;
599 INIT_LIST_HEAD(&wdev->script_proc);
600 vlist_init(&wdev->interfaces, avl_strcmp, vif_update);
601 wdev->interfaces.keep_old = true;
602 wdev->interfaces.no_delete = true;
603 vlist_add(&wireless_devices, &wdev->node, wdev->name);
605 wdev->timeout.cb = wireless_device_setup_timeout;
606 wdev->script_task.cb = wireless_device_script_task_cb;
607 wdev->script_task.dir_fd = drv_fd;
608 wdev->script_task.log_prefix = wdev->name;
610 wdev->script_proc_fd.fd = -1;
611 wdev->script_proc_fd.cb = wireless_proc_poll_fd;
613 wdev->script_check.cb = wireless_device_check_script_tasks;
616 void wireless_interface_create(struct wireless_device *wdev, struct blob_attr *data, const char *section)
618 struct wireless_interface *vif;
619 struct blob_attr *tb[__VIF_ATTR_MAX];
620 struct blob_attr *cur;
624 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(data), blob_len(data));
626 cur = tb[VIF_ATTR_DISABLED];
627 if (cur && blobmsg_get_bool(cur))
630 sprintf(name, "%d", wdev->vif_idx++);
632 vif = calloc_a(sizeof(*vif), &name_buf, strlen(name) + 1);
633 vif->name = strcpy(name_buf, name);
636 vif->section = section;
637 vlist_add(&wdev->interfaces, &vif->node, vif->name);
641 wireless_interface_status(struct wireless_interface *iface, struct blob_buf *b)
645 i = blobmsg_open_table(b, iface->name);
647 blobmsg_add_string(b, "section", iface->section);
649 blobmsg_add_string(b, "ifname", iface->ifname);
651 blob_put_raw(b, blob_data(iface->data), blob_len(iface->data));
652 blobmsg_close_table(b, i);
656 wireless_device_status(struct wireless_device *wdev, struct blob_buf *b)
658 struct wireless_interface *iface;
661 c = blobmsg_open_table(b, wdev->name);
662 blobmsg_add_u8(b, "up", wdev->state == IFS_UP);
663 blobmsg_add_u8(b, "pending", wdev->state == IFS_SETUP || wdev->state == IFS_TEARDOWN);
664 blobmsg_add_u8(b, "autostart", wdev->autostart);
665 i = blobmsg_open_table(b, "interfaces");
666 vlist_for_each_element(&wdev->interfaces, iface, node)
667 wireless_interface_status(iface, b);
668 blobmsg_close_table(b, i);
669 blobmsg_close_table(b, c);
673 wireless_interface_set_data(struct wireless_interface *vif)
679 static const struct blobmsg_policy data_policy[__VIF_DATA_MAX] = {
680 [VIF_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
682 struct blob_attr *tb[__VIF_DATA_MAX];
683 struct blob_attr *cur;
685 blobmsg_parse(data_policy, __VIF_DATA_MAX, tb,
686 blobmsg_data(vif->data), blobmsg_data_len(vif->data));
688 if ((cur = tb[VIF_DATA_IFNAME]))
689 vif->ifname = blobmsg_data(cur);
693 wireless_device_add_process(struct wireless_device *wdev, struct blob_attr *data)
701 static const struct blobmsg_policy proc_policy[__PROC_ATTR_MAX] = {
702 [PROC_ATTR_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
703 [PROC_ATTR_EXE] = { .name = "exe", .type = BLOBMSG_TYPE_STRING },
704 [PROC_ATTR_REQUIRED] = { .name = "required", .type = BLOBMSG_TYPE_BOOL },
706 struct blob_attr *tb[__PROC_ATTR_MAX];
707 struct wireless_process *proc;
711 return UBUS_STATUS_INVALID_ARGUMENT;
713 blobmsg_parse(proc_policy, __PROC_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
714 if (!tb[PROC_ATTR_PID] || !tb[PROC_ATTR_EXE])
715 return UBUS_STATUS_INVALID_ARGUMENT;
717 proc = calloc_a(sizeof(*proc),
718 &name, strlen(blobmsg_data(tb[PROC_ATTR_EXE])) + 1);
720 proc->pid = blobmsg_get_u32(tb[PROC_ATTR_PID]);
721 proc->exe = strcpy(name, blobmsg_data(tb[PROC_ATTR_EXE]));
723 if (tb[PROC_ATTR_REQUIRED])
724 proc->required = blobmsg_get_bool(tb[PROC_ATTR_REQUIRED]);
726 D(WIRELESS, "Wireless device '%s' add pid %d\n", wdev->name, proc->pid);
727 list_add(&proc->list, &wdev->script_proc);
728 uloop_timeout_set(&wdev->script_check, 0);
734 wireless_device_process_kill_all(struct wireless_device *wdev, struct blob_attr *data,
735 struct ubus_request_data *req)
742 static const struct blobmsg_policy kill_policy[__KILL_ATTR_MAX] = {
743 [KILL_ATTR_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
744 [KILL_ATTR_IMMEDIATE] = { .name = "immediate", .type = BLOBMSG_TYPE_BOOL },
746 struct blob_attr *tb[__KILL_ATTR_MAX];
747 struct blob_attr *cur;
748 bool immediate = false;
749 int signal = SIGTERM;
751 blobmsg_parse(kill_policy, __KILL_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
753 if ((cur = tb[KILL_ATTR_SIGNAL]))
754 signal = blobmsg_get_u32(cur);
756 if ((cur = tb[KILL_ATTR_IMMEDIATE]))
757 immediate = blobmsg_get_u32(cur);
759 if (wdev->state != IFS_TEARDOWN || wdev->kill_request)
760 return UBUS_STATUS_PERMISSION_DENIED;
762 wireless_process_kill_all(wdev, signal, immediate);
764 if (list_empty(&wdev->script_proc))
767 wdev->kill_request = calloc(1, sizeof(*wdev->kill_request));
768 ubus_defer_request(ubus_ctx, req, wdev->kill_request);
774 wireless_device_set_retry(struct wireless_device *wdev, struct blob_attr *data)
776 static const struct blobmsg_policy retry_policy = {
777 .name = "retry", .type = BLOBMSG_TYPE_INT32
779 struct blob_attr *val;
781 blobmsg_parse(&retry_policy, 1, &val, blobmsg_data(data), blobmsg_data_len(data));
783 return UBUS_STATUS_INVALID_ARGUMENT;
785 wdev->retry = blobmsg_get_u32(val);
791 NOTIFY_CMD_SET_DATA = 1,
792 NOTIFY_CMD_PROCESS_ADD = 2,
793 NOTIFY_CMD_PROCESS_KILL_ALL = 3,
794 NOTIFY_CMD_SET_RETRY = 4,
798 wireless_device_notify(struct wireless_device *wdev, struct blob_attr *data,
799 struct ubus_request_data *req)
807 static const struct blobmsg_policy notify_policy[__NOTIFY_MAX] = {
808 [NOTIFY_ATTR_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_INT32 },
809 [NOTIFY_ATTR_VIF] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
810 [NOTIFY_ATTR_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
812 struct wireless_interface *vif = NULL;
813 struct blob_attr *tb[__NOTIFY_MAX];
814 struct blob_attr *cur, **pdata;
816 blobmsg_parse(notify_policy, __NOTIFY_MAX, tb, blob_data(data), blob_len(data));
818 if (!tb[NOTIFY_ATTR_COMMAND])
819 return UBUS_STATUS_INVALID_ARGUMENT;
821 if ((cur = tb[NOTIFY_ATTR_VIF]) != NULL) {
822 vif = vlist_find(&wdev->interfaces, blobmsg_data(cur), vif, node);
824 return UBUS_STATUS_NOT_FOUND;
827 cur = tb[NOTIFY_ATTR_DATA];
829 return UBUS_STATUS_INVALID_ARGUMENT;
831 switch (blobmsg_get_u32(tb[NOTIFY_ATTR_COMMAND])) {
834 return UBUS_STATUS_INVALID_ARGUMENT;
836 if (wdev->state != IFS_SETUP)
837 return UBUS_STATUS_PERMISSION_DENIED;
842 wireless_device_mark_up(wdev);
844 case NOTIFY_CMD_SET_DATA:
851 return UBUS_STATUS_INVALID_ARGUMENT;
853 *pdata = blob_memdup(cur);
855 wireless_interface_set_data(vif);
857 case NOTIFY_CMD_PROCESS_ADD:
858 return wireless_device_add_process(wdev, cur);
859 case NOTIFY_CMD_PROCESS_KILL_ALL:
860 return wireless_device_process_kill_all(wdev, cur, req);
861 case NOTIFY_CMD_SET_RETRY:
862 return wireless_device_set_retry(wdev, cur);
864 return UBUS_STATUS_INVALID_ARGUMENT;
871 wireless_start_pending(void)
873 struct wireless_device *wdev;
875 vlist_for_each_element(&wireless_devices, wdev, node)
877 __wireless_device_set_up(wdev);