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 uloop_timeout_cancel(&wdev->timeout);
171 wireless_complete_kill_request(wdev);
174 vlist_for_each_element(&wdev->interfaces, vif, node) {
181 static void wireless_interface_handle_link(struct wireless_interface *vif, bool up)
183 struct interface *iface;
185 if (!vif->network || !vif->ifname)
188 iface = vlist_find(&interfaces, vif->network, iface, node);
192 interface_handle_link(iface, vif->ifname, up);
196 wireless_device_setup_cancel(struct wireless_device *wdev)
201 D(WIRELESS, "Cancel wireless device '%s' setup\n", wdev->name);
203 uloop_timeout_set(&wdev->timeout, 10 * 1000);
207 wireless_device_run_handler(struct wireless_device *wdev, bool up)
209 const char *action = up ? "setup" : "teardown";
213 int fds[2] = { -1, -1 };
215 D(WIRELESS, "Wireless device '%s' run %s handler\n", wdev->name, action);
216 prepare_config(wdev, &b, up);
217 config = blobmsg_format_json(b.head, true);
219 argv[i++] = wdev->drv->script;
220 argv[i++] = wdev->drv->name;
222 argv[i++] = wdev->name;
226 if (up && pipe(fds) == 0) {
227 wdev->script_proc_fd.fd = fds[0];
228 uloop_fd_add(&wdev->script_proc_fd,
229 ULOOP_READ | ULOOP_EDGE_TRIGGER);
232 netifd_start_process(argv, NULL, &wdev->script_task);
241 __wireless_device_set_up(struct wireless_device *wdev)
243 if (wdev->state != IFS_DOWN || config_init)
246 wdev->state = IFS_SETUP;
247 wireless_device_run_handler(wdev, true);
251 wireless_device_free(struct wireless_device *wdev)
253 vlist_flush_all(&wdev->interfaces);
259 wdev_handle_config_change(struct wireless_device *wdev)
261 enum interface_config_state state = wdev->config_state;
263 wdev->config_state = IFC_NORMAL;
268 __wireless_device_set_up(wdev);
271 wireless_device_free(wdev);
277 wireless_device_mark_down(struct wireless_device *wdev)
279 struct wireless_interface *vif;
281 D(WIRELESS, "Wireless device '%s' is now down\n", wdev->name);
283 vlist_for_each_element(&wdev->interfaces, vif, node)
284 wireless_interface_handle_link(vif, false);
286 wireless_process_kill_all(wdev, SIGTERM, true);
288 wdev->cancel = false;
289 wdev->state = IFS_DOWN;
290 wireless_device_free_state(wdev);
291 wdev_handle_config_change(wdev);
295 wireless_device_mark_up(struct wireless_device *wdev)
297 struct wireless_interface *vif;
299 D(WIRELESS, "Wireless device '%s' is now up\n", wdev->name);
300 wdev->state = IFS_UP;
301 vlist_for_each_element(&wdev->interfaces, vif, node)
302 wireless_interface_handle_link(vif, true);
306 wireless_device_setup_timeout(struct uloop_timeout *timeout)
308 struct wireless_device *wdev = container_of(timeout, struct wireless_device, timeout);
310 netifd_kill_process(&wdev->script_task);
311 wdev->script_task.cb(&wdev->script_task, -1);
312 wireless_device_mark_down(wdev);
316 wireless_device_set_up(struct wireless_device *wdev)
318 wdev->retry = WIRELESS_SETUP_RETRY;
319 wdev->autostart = true;
320 __wireless_device_set_up(wdev);
324 __wireless_device_set_down(struct wireless_device *wdev)
326 if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN)
329 if (wdev->script_task.uloop.pending) {
330 wireless_device_setup_cancel(wdev);
334 wdev->state = IFS_TEARDOWN;
335 wireless_device_run_handler(wdev, false);
339 wireless_device_retry_setup(struct wireless_device *wdev)
341 if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN || wdev->cancel)
344 if (--wdev->retry < 0)
345 wdev->autostart = false;
347 __wireless_device_set_down(wdev);
351 wireless_device_script_task_cb(struct netifd_process *proc, int ret)
353 struct wireless_device *wdev = container_of(proc, struct wireless_device, script_task);
355 switch (wdev->state) {
357 wireless_device_retry_setup(wdev);
360 wireless_device_mark_down(wdev);
368 wireless_device_set_down(struct wireless_device *wdev)
370 wdev->autostart = false;
371 __wireless_device_set_down(wdev);
375 wdev_set_config_state(struct wireless_device *wdev, enum interface_config_state s)
377 enum interface_config_state old_state = wdev->config_state;
379 wdev->config_state = s;
380 if (old_state != IFC_NORMAL)
383 if (wdev->state == IFS_DOWN)
384 wdev_handle_config_change(wdev);
386 __wireless_device_set_down(wdev);
390 wdev_change_config(struct wireless_device *wdev, struct wireless_device *wd_new)
392 struct blob_attr *new_config = wd_new->config;
396 if (blob_attr_equal(wdev->config, new_config))
399 D(WIRELESS, "Update configuration of wireless device '%s'\n", wdev->name);
401 wdev->config = blob_memdup(new_config);
402 wdev_set_config_state(wdev, IFC_RELOAD);
406 wdev_create(struct wireless_device *wdev)
408 wdev->retry = WIRELESS_SETUP_RETRY;
409 wdev->config = blob_memdup(wdev->config);
413 wdev_update(struct vlist_tree *tree, struct vlist_node *node_new,
414 struct vlist_node *node_old)
416 struct wireless_device *wd_old = container_of(node_old, struct wireless_device, node);
417 struct wireless_device *wd_new = container_of(node_new, struct wireless_device, node);
419 if (wd_old && wd_new) {
420 wdev_change_config(wd_old, wd_new);
422 D(WIRELESS, "Delete wireless device '%s'\n", wd_old->name);
423 wdev_set_config_state(wd_old, IFC_REMOVE);
425 D(WIRELESS, "Create wireless device '%s'\n", wd_new->name);
431 wireless_add_handler(const char *script, const char *name, json_object *obj)
433 struct wireless_driver *drv;
434 char *name_str, *script_str;
435 json_object *dev_config_obj, *iface_config_obj;
436 struct uci_blob_param_list *dev_config, *iface_config;
438 dev_config_obj = json_get_field(obj, "device", json_type_array);
439 iface_config_obj = json_get_field(obj, "iface", json_type_array);
441 if (!dev_config_obj || !iface_config_obj)
444 drv = calloc_a(sizeof(*drv),
445 &name_str, strlen(name) + 1,
446 &script_str, strlen(script) + 1,
447 &dev_config, sizeof(*dev_config) + sizeof(void *),
448 &iface_config, sizeof(*iface_config) + sizeof(void *));
450 drv->name = strcpy(name_str, name);
451 drv->script = strcpy(script_str, script);
453 dev_config->n_next = 1;
454 dev_config->next[0] = &wdev_param;
455 drv->device.config = dev_config;
457 iface_config->n_next = 1;
458 iface_config->next[0] = &vif_param;
459 drv->interface.config = iface_config;
461 drv->device.buf = netifd_handler_parse_config(drv->device.config, dev_config_obj);
462 drv->interface.buf = netifd_handler_parse_config(drv->interface.config, iface_config_obj);
464 drv->node.key = drv->name;
465 avl_insert(&wireless_drivers, &drv->node);
466 D(WIRELESS, "Add handler for script %s: %s\n", script, name);
470 wireless_init_list(void)
472 vlist_init(&wireless_devices, avl_strcmp, wdev_update);
473 wireless_devices.keep_old = true;
474 wireless_devices.no_delete = true;
476 avl_init(&wireless_drivers, avl_strcmp, false, NULL);
477 drv_fd = netifd_open_subdir("wireless");
481 netifd_init_script_handlers(drv_fd, wireless_add_handler);
485 wireless_interface_init_config(struct wireless_interface *vif)
487 struct blob_attr *tb[__VIF_ATTR_MAX];
488 struct blob_attr *cur;
491 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(vif->config), blob_len(vif->config));
493 if ((cur = tb[VIF_ATTR_NETWORK]))
494 vif->network = blobmsg_data(cur);
498 vif_update(struct vlist_tree *tree, struct vlist_node *node_new,
499 struct vlist_node *node_old)
501 struct wireless_interface *vif_old = container_of(node_old, struct wireless_interface, node);
502 struct wireless_interface *vif_new = container_of(node_new, struct wireless_interface, node);
503 struct wireless_device *wdev;
506 wdev = vif_old->wdev;
508 wdev = vif_new->wdev;
510 if (vif_old && vif_new) {
511 vif_old->section = vif_new->section;
512 if (blob_attr_equal(vif_old->config, vif_new->config)) {
517 D(WIRELESS, "Update wireless interface %s on device %s\n", vif_new->name, wdev->name);
518 free(vif_old->config);
519 vif_old->config = blob_memdup(vif_new->config);
520 wireless_interface_init_config(vif_old);
522 } else if (vif_new) {
523 D(WIRELESS, "Create new wireless interface %s on device %s\n", vif_new->name, wdev->name);
524 vif_new->config = blob_memdup(vif_new->config);
525 wireless_interface_init_config(vif_new);
526 } else if (vif_old) {
527 D(WIRELESS, "Delete wireless interface %s on device %s\n", vif_old->name, wdev->name);
528 free(vif_old->config);
532 wdev_set_config_state(wdev, IFC_RELOAD);
536 wireless_proc_poll_fd(struct uloop_fd *fd, unsigned int events)
538 struct wireless_device *wdev = container_of(fd, struct wireless_device, script_proc_fd);
542 int b = read(fd->fd, buf, sizeof(buf));
558 uloop_timeout_set(&wdev->script_check, 0);
559 wireless_close_script_proc_fd(wdev);
563 wireless_device_check_script_tasks(struct uloop_timeout *timeout)
565 struct wireless_device *wdev = container_of(timeout, struct wireless_device, script_check);
566 struct wireless_process *proc, *tmp;
567 bool restart = false;
569 list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
570 if (wireless_process_check(proc))
573 D(WIRELESS, "Wireless device '%s' pid %d has terminated\n", wdev->name, proc->pid);
577 wireless_process_free(wdev, proc);
581 wireless_device_retry_setup(wdev);
583 uloop_timeout_set(&wdev->script_check, 1000);
587 wireless_device_create(struct wireless_driver *drv, const char *name, struct blob_attr *data)
589 struct wireless_device *wdev;
591 struct blob_attr *disabled;
593 blobmsg_parse(&wdev_policy, 1, &disabled, blob_data(data), blob_len(data));
594 if (disabled && blobmsg_get_bool(disabled))
597 wdev = calloc_a(sizeof(*wdev), &name_buf, strlen(name) + 1);
599 wdev->state = IFS_DOWN;
600 wdev->config_state = IFC_NORMAL;
601 wdev->name = strcpy(name_buf, name);
603 wdev->config_autostart = true;
604 wdev->autostart = wdev->config_autostart;
605 INIT_LIST_HEAD(&wdev->script_proc);
606 vlist_init(&wdev->interfaces, avl_strcmp, vif_update);
607 wdev->interfaces.keep_old = true;
608 wdev->interfaces.no_delete = true;
609 vlist_add(&wireless_devices, &wdev->node, wdev->name);
611 wdev->timeout.cb = wireless_device_setup_timeout;
612 wdev->script_task.cb = wireless_device_script_task_cb;
613 wdev->script_task.dir_fd = drv_fd;
614 wdev->script_task.log_prefix = wdev->name;
616 wdev->script_proc_fd.fd = -1;
617 wdev->script_proc_fd.cb = wireless_proc_poll_fd;
619 wdev->script_check.cb = wireless_device_check_script_tasks;
622 void wireless_interface_create(struct wireless_device *wdev, struct blob_attr *data, const char *section)
624 struct wireless_interface *vif;
625 struct blob_attr *tb[__VIF_ATTR_MAX];
626 struct blob_attr *cur;
630 blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(data), blob_len(data));
632 cur = tb[VIF_ATTR_DISABLED];
633 if (cur && blobmsg_get_bool(cur))
636 sprintf(name, "%d", wdev->vif_idx++);
638 vif = calloc_a(sizeof(*vif), &name_buf, strlen(name) + 1);
639 vif->name = strcpy(name_buf, name);
642 vif->section = section;
643 vlist_add(&wdev->interfaces, &vif->node, vif->name);
647 wireless_interface_status(struct wireless_interface *iface, struct blob_buf *b)
651 i = blobmsg_open_table(b, iface->name);
653 blobmsg_add_string(b, "section", iface->section);
655 blobmsg_add_string(b, "ifname", iface->ifname);
657 blob_put_raw(b, blob_data(iface->data), blob_len(iface->data));
658 blobmsg_close_table(b, i);
662 wireless_device_status(struct wireless_device *wdev, struct blob_buf *b)
664 struct wireless_interface *iface;
667 c = blobmsg_open_table(b, wdev->name);
668 blobmsg_add_u8(b, "up", wdev->state == IFS_UP);
669 blobmsg_add_u8(b, "pending", wdev->state == IFS_SETUP || wdev->state == IFS_TEARDOWN);
670 blobmsg_add_u8(b, "autostart", wdev->autostart);
671 i = blobmsg_open_table(b, "interfaces");
672 vlist_for_each_element(&wdev->interfaces, iface, node)
673 wireless_interface_status(iface, b);
674 blobmsg_close_table(b, i);
675 blobmsg_close_table(b, c);
679 wireless_interface_set_data(struct wireless_interface *vif)
685 static const struct blobmsg_policy data_policy[__VIF_DATA_MAX] = {
686 [VIF_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
688 struct blob_attr *tb[__VIF_DATA_MAX];
689 struct blob_attr *cur;
691 blobmsg_parse(data_policy, __VIF_DATA_MAX, tb,
692 blobmsg_data(vif->data), blobmsg_data_len(vif->data));
694 if ((cur = tb[VIF_DATA_IFNAME]))
695 vif->ifname = blobmsg_data(cur);
699 wireless_device_add_process(struct wireless_device *wdev, struct blob_attr *data)
707 static const struct blobmsg_policy proc_policy[__PROC_ATTR_MAX] = {
708 [PROC_ATTR_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
709 [PROC_ATTR_EXE] = { .name = "exe", .type = BLOBMSG_TYPE_STRING },
710 [PROC_ATTR_REQUIRED] = { .name = "required", .type = BLOBMSG_TYPE_BOOL },
712 struct blob_attr *tb[__PROC_ATTR_MAX];
713 struct wireless_process *proc;
718 return UBUS_STATUS_INVALID_ARGUMENT;
720 blobmsg_parse(proc_policy, __PROC_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
721 if (!tb[PROC_ATTR_PID] || !tb[PROC_ATTR_EXE])
722 return UBUS_STATUS_INVALID_ARGUMENT;
724 pid = blobmsg_get_u32(tb[PROC_ATTR_PID]);
726 return UBUS_STATUS_INVALID_ARGUMENT;
728 proc = calloc_a(sizeof(*proc),
729 &name, strlen(blobmsg_data(tb[PROC_ATTR_EXE])) + 1);
732 proc->exe = strcpy(name, blobmsg_data(tb[PROC_ATTR_EXE]));
734 if (tb[PROC_ATTR_REQUIRED])
735 proc->required = blobmsg_get_bool(tb[PROC_ATTR_REQUIRED]);
737 D(WIRELESS, "Wireless device '%s' add pid %d\n", wdev->name, proc->pid);
738 list_add(&proc->list, &wdev->script_proc);
739 uloop_timeout_set(&wdev->script_check, 0);
745 wireless_device_process_kill_all(struct wireless_device *wdev, struct blob_attr *data,
746 struct ubus_request_data *req)
753 static const struct blobmsg_policy kill_policy[__KILL_ATTR_MAX] = {
754 [KILL_ATTR_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
755 [KILL_ATTR_IMMEDIATE] = { .name = "immediate", .type = BLOBMSG_TYPE_BOOL },
757 struct blob_attr *tb[__KILL_ATTR_MAX];
758 struct blob_attr *cur;
759 bool immediate = false;
760 int signal = SIGTERM;
762 blobmsg_parse(kill_policy, __KILL_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
764 if ((cur = tb[KILL_ATTR_SIGNAL]))
765 signal = blobmsg_get_u32(cur);
767 if ((cur = tb[KILL_ATTR_IMMEDIATE]))
768 immediate = blobmsg_get_bool(cur);
770 if (wdev->state != IFS_TEARDOWN || wdev->kill_request)
771 return UBUS_STATUS_PERMISSION_DENIED;
773 wireless_process_kill_all(wdev, signal, immediate);
775 if (list_empty(&wdev->script_proc))
778 wdev->kill_request = calloc(1, sizeof(*wdev->kill_request));
779 ubus_defer_request(ubus_ctx, req, wdev->kill_request);
785 wireless_device_set_retry(struct wireless_device *wdev, struct blob_attr *data)
787 static const struct blobmsg_policy retry_policy = {
788 .name = "retry", .type = BLOBMSG_TYPE_INT32
790 struct blob_attr *val;
792 blobmsg_parse(&retry_policy, 1, &val, blobmsg_data(data), blobmsg_data_len(data));
794 return UBUS_STATUS_INVALID_ARGUMENT;
796 wdev->retry = blobmsg_get_u32(val);
802 NOTIFY_CMD_SET_DATA = 1,
803 NOTIFY_CMD_PROCESS_ADD = 2,
804 NOTIFY_CMD_PROCESS_KILL_ALL = 3,
805 NOTIFY_CMD_SET_RETRY = 4,
809 wireless_device_notify(struct wireless_device *wdev, struct blob_attr *data,
810 struct ubus_request_data *req)
818 static const struct blobmsg_policy notify_policy[__NOTIFY_MAX] = {
819 [NOTIFY_ATTR_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_INT32 },
820 [NOTIFY_ATTR_VIF] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
821 [NOTIFY_ATTR_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
823 struct wireless_interface *vif = NULL;
824 struct blob_attr *tb[__NOTIFY_MAX];
825 struct blob_attr *cur, **pdata;
827 blobmsg_parse(notify_policy, __NOTIFY_MAX, tb, blob_data(data), blob_len(data));
829 if (!tb[NOTIFY_ATTR_COMMAND])
830 return UBUS_STATUS_INVALID_ARGUMENT;
832 if ((cur = tb[NOTIFY_ATTR_VIF]) != NULL) {
833 vif = vlist_find(&wdev->interfaces, blobmsg_data(cur), vif, node);
835 return UBUS_STATUS_NOT_FOUND;
838 cur = tb[NOTIFY_ATTR_DATA];
840 return UBUS_STATUS_INVALID_ARGUMENT;
842 switch (blobmsg_get_u32(tb[NOTIFY_ATTR_COMMAND])) {
845 return UBUS_STATUS_INVALID_ARGUMENT;
847 if (wdev->state != IFS_SETUP)
848 return UBUS_STATUS_PERMISSION_DENIED;
853 wireless_device_mark_up(wdev);
855 case NOTIFY_CMD_SET_DATA:
862 return UBUS_STATUS_INVALID_ARGUMENT;
864 *pdata = blob_memdup(cur);
866 wireless_interface_set_data(vif);
868 case NOTIFY_CMD_PROCESS_ADD:
869 return wireless_device_add_process(wdev, cur);
870 case NOTIFY_CMD_PROCESS_KILL_ALL:
871 return wireless_device_process_kill_all(wdev, cur, req);
872 case NOTIFY_CMD_SET_RETRY:
873 return wireless_device_set_retry(wdev, cur);
875 return UBUS_STATUS_INVALID_ARGUMENT;
882 wireless_start_pending(void)
884 struct wireless_device *wdev;
886 vlist_for_each_element(&wireless_devices, wdev, node)
888 __wireless_device_set_up(wdev);