wireless.c

   1 /*
   2  * netifd - network interface daemon
   3  * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
   4  *
   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
   8  *
   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.
  13  */
  14 #include <signal.h>
  15 #include "netifd.h"
  16 #include "wireless.h"
  17 #include "handler.h"
  18 #include "ubus.h"
  19
  20 #define WIRELESS_SETUP_RETRY    3
  21
  22 struct vlist_tree wireless_devices;
  23 struct avl_tree wireless_drivers;
  24 static struct blob_buf b;
  25 static int drv_fd;
  26 static LIST_HEAD(handlers);
  27 static bool handler_pending;
  28
  29 enum {
  30         WDEV_ATTR_DISABLED,
  31         WDEV_ATTR_RECONF,
  32         WDEV_ATTR_SERIALIZE,
  33         __WDEV_ATTR_MAX,
  34 };
  35
  36 static const struct blobmsg_policy wdev_policy[__WDEV_ATTR_MAX] = {
  37         [WDEV_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
  38         [WDEV_ATTR_RECONF] = { .name = "reconf", .type = BLOBMSG_TYPE_BOOL },
  39         [WDEV_ATTR_SERIALIZE] = { .name = "serialize", .type = BLOBMSG_TYPE_BOOL },
  40 };
  41
  42 static const struct uci_blob_param_list wdev_param = {
  43         .n_params = ARRAY_SIZE(wdev_policy),
  44         .params = wdev_policy,
  45 };
  46
  47 enum {
  48         VIF_ATTR_DISABLED,
  49         VIF_ATTR_NETWORK,
  50         VIF_ATTR_ISOLATE,
  51         VIF_ATTR_MODE,
  52         __VIF_ATTR_MAX,
  53 };
  54
  55 static const struct blobmsg_policy vif_policy[__VIF_ATTR_MAX] = {
  56         [VIF_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
  57         [VIF_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_ARRAY },
  58         [VIF_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
  59         [VIF_ATTR_MODE] = { .name = "mode", .type = BLOBMSG_TYPE_STRING },
  60 };
  61
  62 static const struct uci_blob_param_list vif_param = {
  63         .n_params = ARRAY_SIZE(vif_policy),
  64         .params = vif_policy,
  65 };
  66
  67 enum {
  68         VLAN_ATTR_DISABLED,
  69         VLAN_ATTR_NETWORK,
  70         VLAN_ATTR_ISOLATE,
  71         __VLAN_ATTR_MAX,
  72 };
  73
  74 static const struct blobmsg_policy vlan_policy[__VLAN_ATTR_MAX] = {
  75         [VLAN_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
  76         [VLAN_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_ARRAY },
  77         [VLAN_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
  78 };
  79
  80 static const struct uci_blob_param_list vlan_param = {
  81         .n_params = ARRAY_SIZE(vlan_policy),
  82         .params = vlan_policy,
  83 };
  84
  85 static void
  86 wireless_handler_stop(struct wireless_device *wdev)
  87 {
  88         if (wdev->handler_pending) {
  89                 wdev->handler_pending = false;
  90                 list_del(&wdev->handler);
  91         }
  92 }
  93
  94 static void
  95 put_container(struct blob_buf *buf, struct blob_attr *attr, const char *name)
  96 {
  97         void *c = blobmsg_open_table(buf, name);
  98         blob_put_raw(buf, blob_data(attr), blob_len(attr));
  99         blobmsg_close_table(buf, c);
 100 }
 101
 102 static void
 103 vif_config_add_bridge(struct blob_buf *buf, struct blob_attr *networks, bool prepare)
 104 {
 105         struct interface *iface;
 106         struct device *dev = NULL;
 107         struct blob_attr *cur;
 108         const char *network;
 109         int rem;
 110
 111         if (!networks)
 112                 return;
 113
 114         blobmsg_for_each_attr(cur, networks, rem) {
 115                 network = blobmsg_data(cur);
 116
 117                 iface = vlist_find(&interfaces, network, iface, node);
 118                 if (!iface)
 119                         continue;
 120
 121                 dev = iface->main_dev.dev;
 122                 if (!dev)
 123                         return;
 124
 125                 if (!dev->type->bridge_capability)
 126                         return;
 127         }
 128
 129         if (!dev)
 130                 return;
 131
 132         if (dev->hotplug_ops && dev->hotplug_ops->prepare)
 133                 dev->hotplug_ops->prepare(dev);
 134
 135         blobmsg_add_string(buf, "bridge", dev->ifname);
 136
 137         if (dev->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST)
 138                 blobmsg_add_u8(buf, "multicast_to_unicast",
 139                                dev->settings.multicast_to_unicast);
 140 }
 141
 142 static void
 143 prepare_config(struct wireless_device *wdev, struct blob_buf *buf, bool up)
 144 {
 145         struct wireless_interface *vif;
 146         struct wireless_vlan *vlan;
 147         void *l, *i, *j, *k;
 148
 149         blob_buf_init(&b, 0);
 150         put_container(&b, wdev->config, "config");
 151         if (wdev->data)
 152                 blobmsg_add_blob(&b, wdev->data);
 153
 154         l = blobmsg_open_table(&b, "interfaces");
 155         vlist_for_each_element(&wdev->interfaces, vif, node) {
 156                 i = blobmsg_open_table(&b, vif->name);
 157                 vif_config_add_bridge(&b, vif->network, up);
 158                 put_container(&b, vif->config, "config");
 159                 if (vif->data)
 160                         blobmsg_add_blob(&b, vif->data);
 161
 162                 j = blobmsg_open_table(&b, "vlans");
 163                 vlist_for_each_element(&wdev->vlans, vlan, node) {
 164                         if (strcmp(vlan->vif, vif->name))
 165                                 continue;
 166                         k = blobmsg_open_table(&b, vlan->name);
 167                         vif_config_add_bridge(&b, vlan->network, up);
 168                         put_container(&b, vlan->config, "config");
 169                         if (vlan->data)
 170                                 blobmsg_add_blob(&b, vlan->data);
 171                         blobmsg_close_table(&b, k);
 172                 }
 173                 blobmsg_close_table(&b, j);
 174                 blobmsg_close_table(&b, i);
 175         }
 176         blobmsg_close_table(&b, l);
 177
 178 }
 179
 180 static bool
 181 wireless_process_check(struct wireless_process *proc)
 182 {
 183         return check_pid_path(proc->pid, proc->exe);
 184 }
 185
 186 static void
 187 wireless_complete_kill_request(struct wireless_device *wdev)
 188 {
 189         if (!wdev->kill_request)
 190                 return;
 191
 192         ubus_complete_deferred_request(ubus_ctx, wdev->kill_request, 0);
 193         free(wdev->kill_request);
 194         wdev->kill_request = NULL;
 195 }
 196
 197 static void
 198 wireless_process_free(struct wireless_device *wdev, struct wireless_process *proc)
 199 {
 200         D(WIRELESS, "Wireless device '%s' free pid %d\n", wdev->name, proc->pid);
 201         list_del(&proc->list);
 202         free(proc);
 203
 204         if (list_empty(&wdev->script_proc))
 205                 wireless_complete_kill_request(wdev);
 206 }
 207
 208 static void
 209 wireless_close_script_proc_fd(struct wireless_device *wdev)
 210 {
 211         if (wdev->script_proc_fd.fd < 0)
 212                 return;
 213
 214         uloop_fd_delete(&wdev->script_proc_fd);
 215         close(wdev->script_proc_fd.fd);
 216         wdev->script_proc_fd.fd = -1;
 217 }
 218
 219 static void
 220 wireless_process_kill_all(struct wireless_device *wdev, int signal, bool free)
 221 {
 222         struct wireless_process *proc, *tmp;
 223
 224         list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
 225                 bool check = wireless_process_check(proc);
 226
 227                 if (check) {
 228                         D(WIRELESS, "Wireless device '%s' kill pid %d\n", wdev->name, proc->pid);
 229                         kill(proc->pid, signal);
 230                 }
 231
 232                 if (free || !check)
 233                         wireless_process_free(wdev, proc);
 234         }
 235
 236         if (free)
 237                 wireless_close_script_proc_fd(wdev);
 238 }
 239
 240 static void
 241 wireless_device_free_state(struct wireless_device *wdev)
 242 {
 243         struct wireless_interface *vif;
 244         struct wireless_vlan *vlan;
 245
 246         wireless_handler_stop(wdev);
 247         uloop_timeout_cancel(&wdev->script_check);
 248         uloop_timeout_cancel(&wdev->timeout);
 249         wireless_complete_kill_request(wdev);
 250         free(wdev->data);
 251         wdev->data = NULL;
 252         vlist_for_each_element(&wdev->interfaces, vif, node) {
 253                 free(vif->data);
 254                 vif->data = NULL;
 255                 vif->ifname = NULL;
 256         }
 257         vlist_for_each_element(&wdev->vlans, vlan, node) {
 258                 free(vlan->data);
 259                 vlan->data = NULL;
 260                 vlan->ifname = NULL;
 261         }
 262 }
 263
 264 static void wireless_interface_handle_link(struct wireless_interface *vif, bool up)
 265 {
 266         struct interface *iface;
 267         struct blob_attr *cur;
 268         const char *network;
 269         int rem;
 270
 271         if (!vif->network || !vif->ifname)
 272                 return;
 273
 274         if (up) {
 275                 struct device *dev = device_get(vif->ifname, 2);
 276                 if (dev) {
 277                         dev->wireless_isolate = vif->isolate;
 278                         dev->wireless = true;
 279                         dev->wireless_ap = vif->ap_mode;
 280                 }
 281         }
 282
 283         blobmsg_for_each_attr(cur, vif->network, rem) {
 284                 network = blobmsg_data(cur);
 285
 286                 iface = vlist_find(&interfaces, network, iface, node);
 287                 if (!iface)
 288                         continue;
 289
 290                 interface_handle_link(iface, vif->ifname, up, true);
 291         }
 292 }
 293
 294 static void wireless_vlan_handle_link(struct wireless_vlan *vlan, bool up)
 295 {
 296         struct interface *iface;
 297         struct blob_attr *cur;
 298         const char *network;
 299         int rem;
 300
 301         if (!vlan->network || !vlan->ifname)
 302                 return;
 303
 304         if (up) {
 305                 struct device *dev = device_get(vlan->ifname, 2);
 306                 if (dev) {
 307                         dev->wireless_isolate = vlan->isolate;
 308                         dev->wireless = true;
 309                         dev->wireless_ap = true;
 310                 }
 311         }
 312
 313         blobmsg_for_each_attr(cur, vlan->network, rem) {
 314                 network = blobmsg_data(cur);
 315
 316                 iface = vlist_find(&interfaces, network, iface, node);
 317                 if (!iface)
 318                         continue;
 319
 320                 interface_handle_link(iface, vlan->ifname, up, true);
 321         }
 322 }
 323
 324 static void
 325 wireless_device_setup_cancel(struct wireless_device *wdev)
 326 {
 327         if (wdev->cancel)
 328                 return;
 329
 330         wireless_handler_stop(wdev);
 331         D(WIRELESS, "Cancel wireless device '%s' setup\n", wdev->name);
 332         wdev->cancel = true;
 333         uloop_timeout_set(&wdev->timeout, 10 * 1000);
 334 }
 335
 336 static void
 337 wireless_device_run_handler(struct wireless_device *wdev, bool up)
 338 {
 339         const char *action = up ? "setup" : "teardown";
 340         const char *argv[6];
 341         char *config;
 342         int i = 0;
 343         int fds[2] = { -1, -1 };
 344
 345         wireless_handler_stop(wdev);
 346
 347         if (handler_pending && wdev->serialize) {
 348                 wdev->handler_action = up;
 349                 wdev->handler_pending = true;
 350                 list_add_tail(&wdev->handler, &handlers);
 351                 return;
 352         }
 353         if (wdev->serialize)
 354                 handler_pending = true;
 355
 356         D(WIRELESS, "Wireless device '%s' run %s handler\n", wdev->name, action);
 357         if (!up && wdev->prev_config) {
 358                 config = blobmsg_format_json(wdev->prev_config, true);
 359                 free(wdev->prev_config);
 360                 wdev->prev_config = NULL;
 361         } else {
 362                 prepare_config(wdev, &b, up);
 363                 config = blobmsg_format_json(b.head, true);
 364         }
 365
 366         argv[i++] = wdev->drv->script;
 367         argv[i++] = wdev->drv->name;
 368         argv[i++] = action;
 369         argv[i++] = wdev->name;
 370         argv[i++] = config;
 371         argv[i] = NULL;
 372
 373         if (up && pipe(fds) == 0) {
 374                 wdev->script_proc_fd.fd = fds[0];
 375                 uloop_fd_add(&wdev->script_proc_fd,
 376                              ULOOP_READ | ULOOP_EDGE_TRIGGER);
 377         }
 378
 379         netifd_start_process(argv, NULL, &wdev->script_task);
 380
 381         if (fds[1] >= 0)
 382                 close(fds[1]);
 383
 384         free(config);
 385 }
 386
 387 static void
 388 wireless_handler_next(void)
 389 {
 390         struct wireless_device *wdev;
 391
 392         if (handler_pending)
 393                 return;
 394         if (list_empty(&handlers))
 395                 return;
 396         wdev = list_first_entry(&handlers, struct wireless_device, handler);
 397         list_del(&wdev->handler);
 398         wdev->handler_pending = false;
 399         wireless_device_run_handler(wdev, wdev->handler_action);
 400 }
 401
 402 static void
 403 __wireless_device_set_up(struct wireless_device *wdev, int force)
 404 {
 405         if (wdev->disabled)
 406                 return;
 407
 408         if (wdev->retry_setup_failed)
 409                 return;
 410
 411         if (!wdev->autostart)
 412                 return;
 413
 414         if (!force && (wdev->state != IFS_DOWN || config_init))
 415                 return;
 416
 417         free(wdev->prev_config);
 418         wdev->prev_config = NULL;
 419         wdev->state = IFS_SETUP;
 420         wireless_device_run_handler(wdev, true);
 421 }
 422
 423 static void
 424 wireless_device_free(struct wireless_device *wdev)
 425 {
 426         wireless_handler_stop(wdev);
 427         vlist_flush_all(&wdev->interfaces);
 428         vlist_flush_all(&wdev->vlans);
 429         avl_delete(&wireless_devices.avl, &wdev->node.avl);
 430         free(wdev->config);
 431         free(wdev->prev_config);
 432         free(wdev);
 433 }
 434
 435 static void
 436 wdev_handle_config_change(struct wireless_device *wdev)
 437 {
 438         enum interface_config_state state = wdev->config_state;
 439
 440         switch(state) {
 441         case IFC_NORMAL:
 442         case IFC_RELOAD:
 443                 __wireless_device_set_up(wdev, 0);
 444
 445                 wdev->config_state = IFC_NORMAL;
 446                 break;
 447         case IFC_REMOVE:
 448                 wireless_device_free(wdev);
 449                 break;
 450         }
 451 }
 452
 453 static void
 454 wireless_device_mark_down(struct wireless_device *wdev)
 455 {
 456         struct wireless_interface *vif;
 457         struct wireless_vlan *vlan;
 458
 459         D(WIRELESS, "Wireless device '%s' is now down\n", wdev->name);
 460
 461         vlist_for_each_element(&wdev->vlans, vlan, node)
 462                 wireless_vlan_handle_link(vlan, false);
 463
 464         vlist_for_each_element(&wdev->interfaces, vif, node)
 465                 wireless_interface_handle_link(vif, false);
 466
 467         wireless_process_kill_all(wdev, SIGTERM, true);
 468
 469         wdev->cancel = false;
 470         wdev->state = IFS_DOWN;
 471         wireless_device_free_state(wdev);
 472         wdev_handle_config_change(wdev);
 473 }
 474
 475 static void
 476 wireless_device_setup_timeout(struct uloop_timeout *timeout)
 477 {
 478         struct wireless_device *wdev = container_of(timeout, struct wireless_device, timeout);
 479
 480         if (wdev->handler_pending) {
 481                 wdev->handler_pending = false;
 482                 list_del(&wdev->handler);
 483         }
 484         netifd_kill_process(&wdev->script_task);
 485         wdev->script_task.cb(&wdev->script_task, -1);
 486         wireless_device_mark_down(wdev);
 487 }
 488
 489 void
 490 wireless_device_set_up(struct wireless_device *wdev)
 491 {
 492         wdev->retry = WIRELESS_SETUP_RETRY;
 493         wdev->autostart = true;
 494         __wireless_device_set_up(wdev, 0);
 495 }
 496
 497 void
 498 wireless_device_reconf(struct wireless_device *wdev)
 499 {
 500         wdev->retry = WIRELESS_SETUP_RETRY;
 501         wdev->autostart = true;
 502         __wireless_device_set_up(wdev, wdev->reconf && (wdev->state == IFS_UP));
 503 }
 504
 505 static void
 506 __wireless_device_set_down(struct wireless_device *wdev)
 507 {
 508         if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN)
 509                 return;
 510
 511         if (wdev->script_task.uloop.pending) {
 512                 wireless_device_setup_cancel(wdev);
 513                 return;
 514         }
 515
 516         wdev->state = IFS_TEARDOWN;
 517         wireless_device_run_handler(wdev, false);
 518 }
 519
 520 static void
 521 wireless_device_mark_up(struct wireless_device *wdev)
 522 {
 523         struct wireless_interface *vif;
 524         struct wireless_vlan *vlan;
 525
 526         if (wdev->cancel) {
 527                 wdev->cancel = false;
 528                 __wireless_device_set_down(wdev);
 529                 return;
 530         }
 531
 532         D(WIRELESS, "Wireless device '%s' is now up\n", wdev->name);
 533         wdev->state = IFS_UP;
 534         vlist_for_each_element(&wdev->interfaces, vif, node)
 535                 wireless_interface_handle_link(vif, true);
 536         vlist_for_each_element(&wdev->vlans, vlan, node)
 537                 wireless_vlan_handle_link(vlan, true);
 538 }
 539
 540 static void
 541 wireless_device_retry_setup(struct wireless_device *wdev)
 542 {
 543         if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN || wdev->cancel)
 544                 return;
 545
 546         if (--wdev->retry < 0)
 547                 wdev->retry_setup_failed = true;
 548
 549         __wireless_device_set_down(wdev);
 550 }
 551
 552 static void
 553 wireless_device_script_task_cb(struct netifd_process *proc, int ret)
 554 {
 555         struct wireless_device *wdev = container_of(proc, struct wireless_device, script_task);
 556
 557         switch (wdev->state) {
 558         case IFS_SETUP:
 559                 wireless_device_retry_setup(wdev);
 560                 break;
 561         case IFS_TEARDOWN:
 562                 wireless_device_mark_down(wdev);
 563                 break;
 564         default:
 565                 break;
 566         }
 567
 568         if (wdev->serialize) {
 569                 handler_pending = false;
 570                 wireless_handler_next();
 571         }
 572 }
 573
 574 void
 575 wireless_device_set_down(struct wireless_device *wdev)
 576 {
 577         wdev->retry_setup_failed = false;
 578         wdev->autostart = false;
 579         __wireless_device_set_down(wdev);
 580 }
 581
 582 static void
 583 wdev_set_config_state(struct wireless_device *wdev, enum interface_config_state s)
 584 {
 585         if (wdev->config_state != IFC_NORMAL)
 586                 return;
 587
 588         wdev->config_state = s;
 589         if (wdev->state == IFS_DOWN)
 590                 wdev_handle_config_change(wdev);
 591         else if (!wdev->reconf || wdev->state != IFS_UP)
 592                 __wireless_device_set_down(wdev);
 593 }
 594
 595 static void
 596 wdev_prepare_prev_config(struct wireless_device *wdev)
 597 {
 598         if (wdev->prev_config)
 599                 return;
 600
 601         prepare_config(wdev, &b, false);
 602         wdev->prev_config = blob_memdup(b.head);
 603 }
 604
 605 static void
 606 wdev_change_config(struct wireless_device *wdev, struct wireless_device *wd_new)
 607 {
 608         struct blob_attr *new_config = wd_new->config;
 609         bool disabled = wd_new->disabled;
 610
 611         free(wd_new);
 612
 613         wdev_prepare_prev_config(wdev);
 614         if (blob_attr_equal(wdev->config, new_config) && wdev->disabled == disabled)
 615                 return;
 616
 617         D(WIRELESS, "Update configuration of wireless device '%s'\n", wdev->name);
 618         free(wdev->config);
 619         wdev->config = blob_memdup(new_config);
 620         wdev->disabled = disabled;
 621         wdev->retry_setup_failed = false;
 622         wdev_set_config_state(wdev, IFC_RELOAD);
 623 }
 624
 625 static void
 626 wdev_create(struct wireless_device *wdev)
 627 {
 628         wdev->retry = WIRELESS_SETUP_RETRY;
 629         wdev->config = blob_memdup(wdev->config);
 630 }
 631
 632 static void
 633 wdev_update(struct vlist_tree *tree, struct vlist_node *node_new,
 634             struct vlist_node *node_old)
 635 {
 636         struct wireless_device *wd_old = container_of(node_old, struct wireless_device, node);
 637         struct wireless_device *wd_new = container_of(node_new, struct wireless_device, node);
 638
 639         if (wd_old && wd_new) {
 640                 D(WIRELESS, "Update wireless device '%s'\n", wd_old->name);
 641                 wdev_change_config(wd_old, wd_new);
 642         } else if (wd_old) {
 643                 D(WIRELESS, "Delete wireless device '%s'\n", wd_old->name);
 644                 wdev_set_config_state(wd_old, IFC_REMOVE);
 645         } else if (wd_new) {
 646                 D(WIRELESS, "Create wireless device '%s'\n", wd_new->name);
 647                 wdev_create(wd_new);
 648         }
 649 }
 650
 651 static void
 652 wireless_add_handler(const char *script, const char *name, json_object *obj)
 653 {
 654         struct wireless_driver *drv;
 655         char *name_str, *script_str;
 656         json_object *dev_config_obj, *iface_config_obj, *vlan_config_obj;
 657         struct uci_blob_param_list *dev_config, *iface_config, *vlan_config;
 658
 659         dev_config_obj = json_get_field(obj, "device", json_type_array);
 660         iface_config_obj = json_get_field(obj, "iface", json_type_array);
 661         vlan_config_obj = json_get_field(obj, "vlan", json_type_array);
 662
 663         if (!dev_config_obj || !iface_config_obj || !vlan_config_obj)
 664                 return;
 665
 666         drv = calloc_a(sizeof(*drv),
 667                 &dev_config, sizeof(*dev_config) + sizeof(void *),
 668                 &iface_config, sizeof(*iface_config) + sizeof(void *),
 669                 &vlan_config, sizeof(*vlan_config) + sizeof(void *),
 670                 &name_str, strlen(name) + 1,
 671                 &script_str, strlen(script) + 1);
 672
 673         drv->name = strcpy(name_str, name);
 674         drv->script = strcpy(script_str, script);
 675
 676         dev_config->n_next = 1;
 677         dev_config->next[0] = &wdev_param;
 678         drv->device.config = dev_config;
 679
 680         iface_config->n_next = 1;
 681         iface_config->next[0] = &vif_param;
 682         drv->interface.config = iface_config;
 683
 684         vlan_config->n_next = 1;
 685         vlan_config->next[0] = &vlan_param;
 686         drv->vlan.config = vlan_config;
 687
 688         drv->device.buf = netifd_handler_parse_config(drv->device.config, dev_config_obj);
 689         drv->interface.buf = netifd_handler_parse_config(drv->interface.config, iface_config_obj);
 690         drv->vlan.buf = netifd_handler_parse_config(drv->vlan.config, vlan_config_obj);
 691
 692         drv->node.key = drv->name;
 693         avl_insert(&wireless_drivers, &drv->node);
 694         D(WIRELESS, "Add handler for script %s: %s\n", script, name);
 695 }
 696
 697 void wireless_init(void)
 698 {
 699         vlist_init(&wireless_devices, avl_strcmp, wdev_update);
 700         wireless_devices.keep_old = true;
 701         wireless_devices.no_delete = true;
 702
 703         avl_init(&wireless_drivers, avl_strcmp, false, NULL);
 704         drv_fd = netifd_open_subdir("wireless");
 705         if (drv_fd < 0)
 706                 return;
 707
 708         netifd_init_script_handlers(drv_fd, wireless_add_handler);
 709 }
 710
 711 static void
 712 wireless_interface_init_config(struct wireless_interface *vif)
 713 {
 714         struct blob_attr *tb[__VIF_ATTR_MAX];
 715         struct blob_attr *cur;
 716
 717         vif->network = NULL;
 718         blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(vif->config), blob_len(vif->config));
 719
 720         if ((cur = tb[VIF_ATTR_NETWORK]))
 721                 vif->network = cur;
 722
 723         cur = tb[VIF_ATTR_ISOLATE];
 724         if (cur)
 725                 vif->isolate = blobmsg_get_bool(cur);
 726
 727         cur = tb[VIF_ATTR_MODE];
 728         if (cur)
 729                 vif->ap_mode = !strcmp(blobmsg_get_string(cur), "ap");
 730 }
 731
 732 static void
 733 vif_update(struct vlist_tree *tree, struct vlist_node *node_new,
 734            struct vlist_node *node_old)
 735 {
 736         struct wireless_interface *vif_old = container_of(node_old, struct wireless_interface, node);
 737         struct wireless_interface *vif_new = container_of(node_new, struct wireless_interface, node);
 738         struct wireless_device *wdev;
 739
 740         if (vif_old)
 741                 wdev = vif_old->wdev;
 742         else
 743                 wdev = vif_new->wdev;
 744
 745         if (vif_old && vif_new) {
 746                 free((void *) vif_old->section);
 747                 vif_old->section = strdup(vif_new->section);
 748                 if (blob_attr_equal(vif_old->config, vif_new->config)) {
 749                         free(vif_new);
 750                         return;
 751                 }
 752
 753                 D(WIRELESS, "Update wireless interface %s on device %s\n", vif_new->name, wdev->name);
 754                 wireless_interface_handle_link(vif_old, false);
 755                 free(vif_old->config);
 756                 vif_old->config = blob_memdup(vif_new->config);
 757                 vif_old->isolate = vif_new->isolate;
 758                 vif_old->ap_mode = vif_new->ap_mode;
 759                 wireless_interface_init_config(vif_old);
 760                 free(vif_new);
 761         } else if (vif_new) {
 762                 D(WIRELESS, "Create new wireless interface %s on device %s\n", vif_new->name, wdev->name);
 763                 vif_new->section = strdup(vif_new->section);
 764                 vif_new->config = blob_memdup(vif_new->config);
 765                 wireless_interface_init_config(vif_new);
 766         } else if (vif_old) {
 767                 D(WIRELESS, "Delete wireless interface %s on device %s\n", vif_old->name, wdev->name);
 768                 wireless_interface_handle_link(vif_old, false);
 769                 free((void *) vif_old->section);
 770                 free(vif_old->config);
 771                 free(vif_old);
 772         }
 773
 774         wdev_set_config_state(wdev, IFC_RELOAD);
 775 }
 776
 777 static void
 778 wireless_vlan_init_config(struct wireless_vlan *vlan)
 779 {
 780         struct blob_attr *tb[__VLAN_ATTR_MAX];
 781         struct blob_attr *cur;
 782
 783         vlan->network = NULL;
 784         blobmsg_parse(vlan_policy, __VLAN_ATTR_MAX, tb, blob_data(vlan->config), blob_len(vlan->config));
 785
 786         if ((cur = tb[VLAN_ATTR_NETWORK]))
 787                 vlan->network = cur;
 788
 789         cur = tb[VLAN_ATTR_ISOLATE];
 790         if (cur)
 791                 vlan->isolate = blobmsg_get_bool(cur);
 792 }
 793
 794 static void
 795 vlan_update(struct vlist_tree *tree, struct vlist_node *node_new,
 796             struct vlist_node *node_old)
 797 {
 798         struct wireless_vlan *vlan_old = container_of(node_old, struct wireless_vlan, node);
 799         struct wireless_vlan *vlan_new = container_of(node_new, struct wireless_vlan, node);
 800         struct wireless_device *wdev;
 801
 802         if (vlan_old)
 803                 wdev = vlan_old->wdev;
 804         else
 805                 wdev = vlan_new->wdev;
 806
 807         if (vlan_old && vlan_new) {
 808                 free((void *) vlan_old->section);
 809                 vlan_old->section = strdup(vlan_new->section);
 810                 if (blob_attr_equal(vlan_old->config, vlan_new->config)) {
 811                         free(vlan_new);
 812                         return;
 813                 }
 814
 815                 D(WIRELESS, "Update wireless vlan %s on device %s\n", vlan_new->name, wdev->name);
 816                 wireless_vlan_handle_link(vlan_old, false);
 817                 free(vlan_old->config);
 818                 vlan_old->config = blob_memdup(vlan_new->config);
 819                 vlan_old->isolate = vlan_new->isolate;
 820                 wireless_vlan_init_config(vlan_old);
 821                 free(vlan_new);
 822         } else if (vlan_new) {
 823                 D(WIRELESS, "Create new wireless vlan %s on device %s\n", vlan_new->name, wdev->name);
 824                 vlan_new->section = strdup(vlan_new->section);
 825                 vlan_new->config = blob_memdup(vlan_new->config);
 826                 wireless_vlan_init_config(vlan_new);
 827         } else if (vlan_old) {
 828                 D(WIRELESS, "Delete wireless interface %s on device %s\n", vlan_old->name, wdev->name);
 829                 wireless_vlan_handle_link(vlan_old, false);
 830                 free((void *) vlan_old->section);
 831                 free(vlan_old->config);
 832                 free(vlan_old);
 833         }
 834
 835         wdev_set_config_state(wdev, IFC_RELOAD);
 836 }
 837
 838 static void
 839 wireless_proc_poll_fd(struct uloop_fd *fd, unsigned int events)
 840 {
 841         struct wireless_device *wdev = container_of(fd, struct wireless_device, script_proc_fd);
 842         char buf[128];
 843
 844         while (1) {
 845                 int b = read(fd->fd, buf, sizeof(buf));
 846                 if (b < 0) {
 847                         if (errno == EINTR)
 848                                 continue;
 849
 850                         if (errno == EAGAIN)
 851                                 return;
 852
 853                         goto done;
 854                 }
 855
 856                 if (!b)
 857                         goto done;
 858         }
 859
 860 done:
 861         uloop_timeout_set(&wdev->script_check, 0);
 862         wireless_close_script_proc_fd(wdev);
 863 }
 864
 865 static void
 866 wireless_device_check_script_tasks(struct uloop_timeout *timeout)
 867 {
 868         struct wireless_device *wdev = container_of(timeout, struct wireless_device, script_check);
 869         struct wireless_process *proc, *tmp;
 870         bool restart = false;
 871
 872         list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
 873                 if (wireless_process_check(proc))
 874                         continue;
 875
 876                 D(WIRELESS, "Wireless device '%s' pid %d has terminated\n", wdev->name, proc->pid);
 877                 if (proc->required)
 878                         restart = true;
 879
 880                 wireless_process_free(wdev, proc);
 881         }
 882
 883         if (restart)
 884                 wireless_device_retry_setup(wdev);
 885         else
 886                 uloop_timeout_set(&wdev->script_check, 1000);
 887 }
 888
 889 void
 890 wireless_device_create(struct wireless_driver *drv, const char *name, struct blob_attr *data)
 891 {
 892         struct wireless_device *wdev;
 893         char *name_buf;
 894         struct blob_attr *tb[__WDEV_ATTR_MAX];
 895         struct blob_attr *cur;
 896
 897         blobmsg_parse(wdev_policy, __WDEV_ATTR_MAX, tb, blob_data(data), blob_len(data));
 898
 899         wdev = calloc_a(sizeof(*wdev), &name_buf, strlen(name) + 1);
 900
 901         cur = tb[WDEV_ATTR_DISABLED];
 902         wdev->disabled = cur && blobmsg_get_bool(cur);
 903
 904         wdev->drv = drv;
 905         wdev->state = IFS_DOWN;
 906         wdev->config_state = IFC_NORMAL;
 907         wdev->name = strcpy(name_buf, name);
 908         wdev->config = data;
 909         wdev->handler_pending = false;
 910
 911         cur = tb[WDEV_ATTR_SERIALIZE];
 912         wdev->serialize = cur && blobmsg_get_bool(cur);
 913
 914         cur = tb[WDEV_ATTR_RECONF];
 915         wdev->reconf = cur && blobmsg_get_bool(cur);
 916
 917         wdev->retry_setup_failed = false;
 918         wdev->autostart = true;
 919         INIT_LIST_HEAD(&wdev->script_proc);
 920         vlist_init(&wdev->interfaces, avl_strcmp, vif_update);
 921         wdev->interfaces.keep_old = true;
 922         vlist_init(&wdev->vlans, avl_strcmp, vlan_update);
 923         wdev->vlans.keep_old = true;
 924
 925         wdev->timeout.cb = wireless_device_setup_timeout;
 926         wdev->script_task.cb = wireless_device_script_task_cb;
 927         wdev->script_task.dir_fd = drv_fd;
 928         wdev->script_task.log_prefix = wdev->name;
 929
 930         wdev->script_proc_fd.fd = -1;
 931         wdev->script_proc_fd.cb = wireless_proc_poll_fd;
 932
 933         wdev->script_check.cb = wireless_device_check_script_tasks;
 934
 935         vlist_add(&wireless_devices, &wdev->node, wdev->name);
 936 }
 937
 938 void
 939 wireless_vlan_create(struct wireless_device *wdev, char *vif, struct blob_attr *data, const char *section)
 940 {
 941         struct wireless_vlan *vlan;
 942         struct blob_attr *tb[__VLAN_ATTR_MAX];
 943         struct blob_attr *cur;
 944         char *name_buf, *vif_buf;
 945         char name[8];
 946
 947         blobmsg_parse(vlan_policy, __VLAN_ATTR_MAX, tb, blob_data(data), blob_len(data));
 948
 949         cur = tb[VLAN_ATTR_DISABLED];
 950         if (cur && blobmsg_get_bool(cur))
 951                 return;
 952
 953         sprintf(name, "%d", wdev->vlan_idx++);
 954
 955         vlan = calloc_a(sizeof(*vlan),
 956                        &name_buf, strlen(name) + 1,
 957                        &vif_buf, strlen(vif) + 1);
 958         vlan->name = strcpy(name_buf, name);
 959         vlan->vif = strcpy(vif_buf, vif);
 960         vlan->wdev = wdev;
 961         vlan->config = data;
 962         vlan->section = section;
 963         vlan->isolate = false;
 964
 965         vlist_add(&wdev->vlans, &vlan->node, vlan->name);
 966 }
 967
 968 static void
 969 wireless_vlan_status(struct wireless_vlan *vlan, struct blob_buf *b)
 970 {
 971         void *i;
 972
 973         i = blobmsg_open_table(b, NULL);
 974         if (vlan->section)
 975                 blobmsg_add_string(b, "section", vlan->section);
 976         if (vlan->ifname)
 977                 blobmsg_add_string(b, "ifname", vlan->ifname);
 978         put_container(b, vlan->config, "config");
 979         blobmsg_close_table(b, i);
 980 }
 981
 982 struct wireless_interface* wireless_interface_create(struct wireless_device *wdev, struct blob_attr *data, const char *section)
 983 {
 984         struct wireless_interface *vif;
 985         struct blob_attr *tb[__VIF_ATTR_MAX];
 986         struct blob_attr *cur;
 987         char *name_buf;
 988         char name[8];
 989
 990         blobmsg_parse(vif_policy, __VIF_ATTR_MAX, tb, blob_data(data), blob_len(data));
 991
 992         cur = tb[VIF_ATTR_DISABLED];
 993         if (cur && blobmsg_get_bool(cur))
 994                 return NULL;
 995
 996         sprintf(name, "%d", wdev->vif_idx++);
 997
 998         vif = calloc_a(sizeof(*vif),
 999                        &name_buf, strlen(name) + 1);
1000         vif->name = strcpy(name_buf, name);
1001         vif->wdev = wdev;
1002         vif->config = data;
1003         vif->section = section;
1004         vif->isolate = false;
1005
1006         vlist_add(&wdev->interfaces, &vif->node, vif->name);
1007         return vif;
1008 }
1009
1010 static void
1011 wireless_interface_status(struct wireless_interface *iface, struct blob_buf *b)
1012 {
1013         struct wireless_vlan *vlan;
1014         void *i, *j;
1015
1016         i = blobmsg_open_table(b, NULL);
1017         if (iface->section)
1018                 blobmsg_add_string(b, "section", iface->section);
1019         if (iface->ifname)
1020                 blobmsg_add_string(b, "ifname", iface->ifname);
1021         put_container(b, iface->config, "config");
1022         j = blobmsg_open_array(b, "vlans");
1023         vlist_for_each_element(&iface->wdev->vlans, vlan, node)
1024                 if (!strcmp(iface->name, vlan->vif))
1025                         wireless_vlan_status(vlan, b);
1026         blobmsg_close_array(b, j);
1027         blobmsg_close_table(b, i);
1028 }
1029
1030 void
1031 wireless_device_status(struct wireless_device *wdev, struct blob_buf *b)
1032 {
1033         struct wireless_interface *iface;
1034         void *c, *i;
1035
1036         c = blobmsg_open_table(b, wdev->name);
1037         blobmsg_add_u8(b, "up", wdev->state == IFS_UP);
1038         blobmsg_add_u8(b, "pending", wdev->state == IFS_SETUP || wdev->state == IFS_TEARDOWN);
1039         blobmsg_add_u8(b, "autostart", wdev->autostart);
1040         blobmsg_add_u8(b, "disabled", wdev->disabled);
1041         blobmsg_add_u8(b, "retry_setup_failed", wdev->retry_setup_failed);
1042         put_container(b, wdev->config, "config");
1043
1044         i = blobmsg_open_array(b, "interfaces");
1045         vlist_for_each_element(&wdev->interfaces, iface, node)
1046                 wireless_interface_status(iface, b);
1047         blobmsg_close_array(b, i);
1048         blobmsg_close_table(b, c);
1049 }
1050
1051 void
1052 wireless_device_get_validate(struct wireless_device *wdev, struct blob_buf *b)
1053 {
1054         struct uci_blob_param_list *p;
1055         void *c, *d;
1056         int i;
1057
1058         c = blobmsg_open_table(b, wdev->name);
1059
1060         d = blobmsg_open_table(b, "device");
1061         p = wdev->drv->device.config;
1062         for (i = 0; i < p->n_params; i++)
1063                 blobmsg_add_string(b, p->params[i].name, uci_get_validate_string(p, i));
1064         blobmsg_close_table(b, d);
1065
1066         d = blobmsg_open_table(b, "interface");
1067         p = wdev->drv->interface.config;
1068         for (i = 0; i < p->n_params; i++)
1069                 blobmsg_add_string(b, p->params[i].name, uci_get_validate_string(p, i));
1070         blobmsg_close_table(b, d);
1071
1072         blobmsg_close_table(b, c);
1073 }
1074
1075 static void
1076 wireless_interface_set_data(struct wireless_interface *vif)
1077 {
1078         enum {
1079                 VIF_DATA_IFNAME,
1080                 __VIF_DATA_MAX,
1081         };
1082         static const struct blobmsg_policy data_policy[__VIF_DATA_MAX] = {
1083                 [VIF_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
1084         };
1085         struct blob_attr *tb[__VIF_DATA_MAX];
1086         struct blob_attr *cur;
1087
1088         blobmsg_parse(data_policy, __VIF_DATA_MAX, tb,
1089                       blobmsg_data(vif->data), blobmsg_data_len(vif->data));
1090
1091         if ((cur = tb[VIF_DATA_IFNAME]))
1092                 vif->ifname = blobmsg_data(cur);
1093 }
1094
1095 static void
1096 wireless_vlan_set_data(struct wireless_vlan *vlan)
1097 {
1098         enum {
1099                 VLAN_DATA_IFNAME,
1100                 __VLAN_DATA_MAX,
1101         };
1102         static const struct blobmsg_policy data_policy[__VLAN_DATA_MAX] = {
1103                 [VLAN_DATA_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_STRING },
1104         };
1105         struct blob_attr *tb[__VLAN_DATA_MAX];
1106         struct blob_attr *cur;
1107
1108         blobmsg_parse(data_policy, __VLAN_DATA_MAX, tb,
1109                       blobmsg_data(vlan->data), blobmsg_data_len(vlan->data));
1110
1111         if ((cur = tb[VLAN_DATA_IFNAME]))
1112                 vlan->ifname = blobmsg_data(cur);
1113 }
1114
1115 static int
1116 wireless_device_add_process(struct wireless_device *wdev, struct blob_attr *data)
1117 {
1118         enum {
1119                 PROC_ATTR_PID,
1120                 PROC_ATTR_EXE,
1121                 PROC_ATTR_REQUIRED,
1122                 __PROC_ATTR_MAX
1123         };
1124         static const struct blobmsg_policy proc_policy[__PROC_ATTR_MAX] = {
1125                 [PROC_ATTR_PID] = { .name = "pid", .type = BLOBMSG_TYPE_INT32 },
1126                 [PROC_ATTR_EXE] = { .name = "exe", .type = BLOBMSG_TYPE_STRING },
1127                 [PROC_ATTR_REQUIRED] = { .name = "required", .type = BLOBMSG_TYPE_BOOL },
1128         };
1129         struct blob_attr *tb[__PROC_ATTR_MAX];
1130         struct wireless_process *proc;
1131         char *name;
1132         int pid;
1133
1134         if (!data)
1135                 return UBUS_STATUS_INVALID_ARGUMENT;
1136
1137         blobmsg_parse(proc_policy, __PROC_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
1138         if (!tb[PROC_ATTR_PID] || !tb[PROC_ATTR_EXE])
1139                 return UBUS_STATUS_INVALID_ARGUMENT;
1140
1141         pid = blobmsg_get_u32(tb[PROC_ATTR_PID]);
1142         if (pid < 2)
1143                 return UBUS_STATUS_INVALID_ARGUMENT;
1144
1145         proc = calloc_a(sizeof(*proc),
1146                 &name, strlen(blobmsg_data(tb[PROC_ATTR_EXE])) + 1);
1147
1148         proc->pid = pid;
1149         proc->exe = strcpy(name, blobmsg_data(tb[PROC_ATTR_EXE]));
1150
1151         if (tb[PROC_ATTR_REQUIRED])
1152                 proc->required = blobmsg_get_bool(tb[PROC_ATTR_REQUIRED]);
1153
1154         D(WIRELESS, "Wireless device '%s' add pid %d\n", wdev->name, proc->pid);
1155         list_add(&proc->list, &wdev->script_proc);
1156         uloop_timeout_set(&wdev->script_check, 0);
1157
1158         return 0;
1159 }
1160
1161 static int
1162 wireless_device_process_kill_all(struct wireless_device *wdev, struct blob_attr *data,
1163                                  struct ubus_request_data *req)
1164 {
1165         enum {
1166                 KILL_ATTR_SIGNAL,
1167                 KILL_ATTR_IMMEDIATE,
1168                 __KILL_ATTR_MAX
1169         };
1170         static const struct blobmsg_policy kill_policy[__KILL_ATTR_MAX] = {
1171                 [KILL_ATTR_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
1172                 [KILL_ATTR_IMMEDIATE] = { .name = "immediate", .type = BLOBMSG_TYPE_BOOL },
1173         };
1174         struct blob_attr *tb[__KILL_ATTR_MAX];
1175         struct blob_attr *cur;
1176         bool immediate = false;
1177         int signal = SIGTERM;
1178
1179         blobmsg_parse(kill_policy, __KILL_ATTR_MAX, tb, blobmsg_data(data), blobmsg_data_len(data));
1180
1181         if ((cur = tb[KILL_ATTR_SIGNAL]))
1182                 signal = blobmsg_get_u32(cur);
1183
1184         if ((cur = tb[KILL_ATTR_IMMEDIATE]))
1185                 immediate = blobmsg_get_bool(cur);
1186
1187         if (wdev->state != IFS_TEARDOWN || wdev->kill_request)
1188                 return UBUS_STATUS_PERMISSION_DENIED;
1189
1190         wireless_process_kill_all(wdev, signal, immediate);
1191
1192         if (list_empty(&wdev->script_proc))
1193                 return 0;
1194
1195         wdev->kill_request = calloc(1, sizeof(*wdev->kill_request));
1196         ubus_defer_request(ubus_ctx, req, wdev->kill_request);
1197
1198         return 0;
1199 }
1200
1201 static int
1202 wireless_device_set_retry(struct wireless_device *wdev, struct blob_attr *data)
1203 {
1204         static const struct blobmsg_policy retry_policy = {
1205                 .name = "retry", .type = BLOBMSG_TYPE_INT32
1206         };
1207         struct blob_attr *val;
1208
1209         blobmsg_parse(&retry_policy, 1, &val, blobmsg_data(data), blobmsg_data_len(data));
1210         if (!val)
1211                 return UBUS_STATUS_INVALID_ARGUMENT;
1212
1213         wdev->retry = blobmsg_get_u32(val);
1214         return 0;
1215 }
1216
1217 enum {
1218         NOTIFY_CMD_UP = 0,
1219         NOTIFY_CMD_SET_DATA = 1,
1220         NOTIFY_CMD_PROCESS_ADD = 2,
1221         NOTIFY_CMD_PROCESS_KILL_ALL = 3,
1222         NOTIFY_CMD_SET_RETRY = 4,
1223 };
1224
1225 int
1226 wireless_device_notify(struct wireless_device *wdev, struct blob_attr *data,
1227                        struct ubus_request_data *req)
1228 {
1229         enum {
1230                 NOTIFY_ATTR_COMMAND,
1231                 NOTIFY_ATTR_VIF,
1232                 NOTIFY_ATTR_VLAN,
1233                 NOTIFY_ATTR_DATA,
1234                 __NOTIFY_MAX,
1235         };
1236         static const struct blobmsg_policy notify_policy[__NOTIFY_MAX] = {
1237                 [NOTIFY_ATTR_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_INT32 },
1238                 [NOTIFY_ATTR_VIF] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
1239                 [NOTIFY_ATTR_VLAN] = { .name = "vlan", .type = BLOBMSG_TYPE_STRING },
1240                 [NOTIFY_ATTR_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
1241         };
1242         struct wireless_interface *vif = NULL;
1243         struct wireless_vlan *vlan = NULL;
1244         struct blob_attr *tb[__NOTIFY_MAX];
1245         struct blob_attr *cur, **pdata;
1246
1247         blobmsg_parse(notify_policy, __NOTIFY_MAX, tb, blob_data(data), blob_len(data));
1248
1249         if (!tb[NOTIFY_ATTR_COMMAND])
1250                 return UBUS_STATUS_INVALID_ARGUMENT;
1251
1252         if ((cur = tb[NOTIFY_ATTR_VIF]) != NULL) {
1253                 vif = vlist_find(&wdev->interfaces, blobmsg_data(cur), vif, node);
1254                 if (!vif)
1255                         return UBUS_STATUS_NOT_FOUND;
1256         }
1257
1258         if ((cur = tb[NOTIFY_ATTR_VLAN]) != NULL) {
1259                 vlan = vlist_find(&wdev->vlans, blobmsg_data(cur), vlan, node);
1260                 if (!vlan)
1261                         return UBUS_STATUS_NOT_FOUND;
1262         }
1263
1264         cur = tb[NOTIFY_ATTR_DATA];
1265         if (!cur)
1266                 return UBUS_STATUS_INVALID_ARGUMENT;
1267
1268         switch (blobmsg_get_u32(tb[NOTIFY_ATTR_COMMAND])) {
1269         case NOTIFY_CMD_UP:
1270                 if (vif || vlan)
1271                         return UBUS_STATUS_INVALID_ARGUMENT;
1272
1273                 if (wdev->state != IFS_SETUP)
1274                         return UBUS_STATUS_PERMISSION_DENIED;
1275
1276                 wireless_device_mark_up(wdev);
1277                 break;
1278         case NOTIFY_CMD_SET_DATA:
1279                 if (vif)
1280                         pdata = &vif->data;
1281                 else if (vlan)
1282                         pdata = &vlan->data;
1283                 else
1284                         pdata = &wdev->data;
1285
1286                 if (*pdata)
1287                         return UBUS_STATUS_INVALID_ARGUMENT;
1288
1289                 *pdata = blob_memdup(cur);
1290                 if (vif)
1291                         wireless_interface_set_data(vif);
1292                 else if (vlan)
1293                         wireless_vlan_set_data(vlan);
1294                 break;
1295         case NOTIFY_CMD_PROCESS_ADD:
1296                 return wireless_device_add_process(wdev, cur);
1297         case NOTIFY_CMD_PROCESS_KILL_ALL:
1298                 return wireless_device_process_kill_all(wdev, cur, req);
1299         case NOTIFY_CMD_SET_RETRY:
1300                 return wireless_device_set_retry(wdev, cur);
1301         default:
1302                 return UBUS_STATUS_INVALID_ARGUMENT;
1303         }
1304
1305         return 0;
1306 }
1307
1308 void
1309 wireless_start_pending(void)
1310 {
1311         struct wireless_device *wdev;
1312
1313         vlist_for_each_element(&wireless_devices, wdev, node)
1314                 __wireless_device_set_up(wdev, 0);
1315 }