net/bluetooth/mgmt.c

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3
   4    Copyright (C) 2010  Nokia Corporation
   5    Copyright (C) 2011-2012 Intel Corporation
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License version 2 as
   9    published by the Free Software Foundation;
  10
  11    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  12    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  14    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  15    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  16    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  21    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  22    SOFTWARE IS DISCLAIMED.
  23 */
  24
  25 /* Bluetooth HCI Management interface */
  26
  27 #include <linux/module.h>
  28 #include <asm/unaligned.h>
  29
  30 #include <net/bluetooth/bluetooth.h>
  31 #include <net/bluetooth/hci_core.h>
  32 #include <net/bluetooth/hci_sock.h>
  33 #include <net/bluetooth/l2cap.h>
  34 #include <net/bluetooth/mgmt.h>
  35
  36 #include "hci_request.h"
  37 #include "smp.h"
  38 #include "mgmt_util.h"
  39
  40 #define MGMT_VERSION    1
  41 #define MGMT_REVISION   10
  42
  43 static const u16 mgmt_commands[] = {
  44         MGMT_OP_READ_INDEX_LIST,
  45         MGMT_OP_READ_INFO,
  46         MGMT_OP_SET_POWERED,
  47         MGMT_OP_SET_DISCOVERABLE,
  48         MGMT_OP_SET_CONNECTABLE,
  49         MGMT_OP_SET_FAST_CONNECTABLE,
  50         MGMT_OP_SET_BONDABLE,
  51         MGMT_OP_SET_LINK_SECURITY,
  52         MGMT_OP_SET_SSP,
  53         MGMT_OP_SET_HS,
  54         MGMT_OP_SET_LE,
  55         MGMT_OP_SET_DEV_CLASS,
  56         MGMT_OP_SET_LOCAL_NAME,
  57         MGMT_OP_ADD_UUID,
  58         MGMT_OP_REMOVE_UUID,
  59         MGMT_OP_LOAD_LINK_KEYS,
  60         MGMT_OP_LOAD_LONG_TERM_KEYS,
  61         MGMT_OP_DISCONNECT,
  62         MGMT_OP_GET_CONNECTIONS,
  63         MGMT_OP_PIN_CODE_REPLY,
  64         MGMT_OP_PIN_CODE_NEG_REPLY,
  65         MGMT_OP_SET_IO_CAPABILITY,
  66         MGMT_OP_PAIR_DEVICE,
  67         MGMT_OP_CANCEL_PAIR_DEVICE,
  68         MGMT_OP_UNPAIR_DEVICE,
  69         MGMT_OP_USER_CONFIRM_REPLY,
  70         MGMT_OP_USER_CONFIRM_NEG_REPLY,
  71         MGMT_OP_USER_PASSKEY_REPLY,
  72         MGMT_OP_USER_PASSKEY_NEG_REPLY,
  73         MGMT_OP_READ_LOCAL_OOB_DATA,
  74         MGMT_OP_ADD_REMOTE_OOB_DATA,
  75         MGMT_OP_REMOVE_REMOTE_OOB_DATA,
  76         MGMT_OP_START_DISCOVERY,
  77         MGMT_OP_STOP_DISCOVERY,
  78         MGMT_OP_CONFIRM_NAME,
  79         MGMT_OP_BLOCK_DEVICE,
  80         MGMT_OP_UNBLOCK_DEVICE,
  81         MGMT_OP_SET_DEVICE_ID,
  82         MGMT_OP_SET_ADVERTISING,
  83         MGMT_OP_SET_BREDR,
  84         MGMT_OP_SET_STATIC_ADDRESS,
  85         MGMT_OP_SET_SCAN_PARAMS,
  86         MGMT_OP_SET_SECURE_CONN,
  87         MGMT_OP_SET_DEBUG_KEYS,
  88         MGMT_OP_SET_PRIVACY,
  89         MGMT_OP_LOAD_IRKS,
  90         MGMT_OP_GET_CONN_INFO,
  91         MGMT_OP_GET_CLOCK_INFO,
  92         MGMT_OP_ADD_DEVICE,
  93         MGMT_OP_REMOVE_DEVICE,
  94         MGMT_OP_LOAD_CONN_PARAM,
  95         MGMT_OP_READ_UNCONF_INDEX_LIST,
  96         MGMT_OP_READ_CONFIG_INFO,
  97         MGMT_OP_SET_EXTERNAL_CONFIG,
  98         MGMT_OP_SET_PUBLIC_ADDRESS,
  99         MGMT_OP_START_SERVICE_DISCOVERY,
 100         MGMT_OP_READ_LOCAL_OOB_EXT_DATA,
 101         MGMT_OP_READ_EXT_INDEX_LIST,
 102         MGMT_OP_READ_ADV_FEATURES,
 103         MGMT_OP_ADD_ADVERTISING,
 104         MGMT_OP_REMOVE_ADVERTISING,
 105 };
 106
 107 static const u16 mgmt_events[] = {
 108         MGMT_EV_CONTROLLER_ERROR,
 109         MGMT_EV_INDEX_ADDED,
 110         MGMT_EV_INDEX_REMOVED,
 111         MGMT_EV_NEW_SETTINGS,
 112         MGMT_EV_CLASS_OF_DEV_CHANGED,
 113         MGMT_EV_LOCAL_NAME_CHANGED,
 114         MGMT_EV_NEW_LINK_KEY,
 115         MGMT_EV_NEW_LONG_TERM_KEY,
 116         MGMT_EV_DEVICE_CONNECTED,
 117         MGMT_EV_DEVICE_DISCONNECTED,
 118         MGMT_EV_CONNECT_FAILED,
 119         MGMT_EV_PIN_CODE_REQUEST,
 120         MGMT_EV_USER_CONFIRM_REQUEST,
 121         MGMT_EV_USER_PASSKEY_REQUEST,
 122         MGMT_EV_AUTH_FAILED,
 123         MGMT_EV_DEVICE_FOUND,
 124         MGMT_EV_DISCOVERING,
 125         MGMT_EV_DEVICE_BLOCKED,
 126         MGMT_EV_DEVICE_UNBLOCKED,
 127         MGMT_EV_DEVICE_UNPAIRED,
 128         MGMT_EV_PASSKEY_NOTIFY,
 129         MGMT_EV_NEW_IRK,
 130         MGMT_EV_NEW_CSRK,
 131         MGMT_EV_DEVICE_ADDED,
 132         MGMT_EV_DEVICE_REMOVED,
 133         MGMT_EV_NEW_CONN_PARAM,
 134         MGMT_EV_UNCONF_INDEX_ADDED,
 135         MGMT_EV_UNCONF_INDEX_REMOVED,
 136         MGMT_EV_NEW_CONFIG_OPTIONS,
 137         MGMT_EV_EXT_INDEX_ADDED,
 138         MGMT_EV_EXT_INDEX_REMOVED,
 139         MGMT_EV_LOCAL_OOB_DATA_UPDATED,
 140         MGMT_EV_ADVERTISING_ADDED,
 141         MGMT_EV_ADVERTISING_REMOVED,
 142 };
 143
 144 static const u16 mgmt_untrusted_commands[] = {
 145         MGMT_OP_READ_INDEX_LIST,
 146         MGMT_OP_READ_INFO,
 147         MGMT_OP_READ_UNCONF_INDEX_LIST,
 148         MGMT_OP_READ_CONFIG_INFO,
 149         MGMT_OP_READ_EXT_INDEX_LIST,
 150 };
 151
 152 static const u16 mgmt_untrusted_events[] = {
 153         MGMT_EV_INDEX_ADDED,
 154         MGMT_EV_INDEX_REMOVED,
 155         MGMT_EV_NEW_SETTINGS,
 156         MGMT_EV_CLASS_OF_DEV_CHANGED,
 157         MGMT_EV_LOCAL_NAME_CHANGED,
 158         MGMT_EV_UNCONF_INDEX_ADDED,
 159         MGMT_EV_UNCONF_INDEX_REMOVED,
 160         MGMT_EV_NEW_CONFIG_OPTIONS,
 161         MGMT_EV_EXT_INDEX_ADDED,
 162         MGMT_EV_EXT_INDEX_REMOVED,
 163 };
 164
 165 #define CACHE_TIMEOUT   msecs_to_jiffies(2 * 1000)
 166
 167 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
 168                  "\x00\x00\x00\x00\x00\x00\x00\x00"
 169
 170 /* HCI to MGMT error code conversion table */
 171 static u8 mgmt_status_table[] = {
 172         MGMT_STATUS_SUCCESS,
 173         MGMT_STATUS_UNKNOWN_COMMAND,    /* Unknown Command */
 174         MGMT_STATUS_NOT_CONNECTED,      /* No Connection */
 175         MGMT_STATUS_FAILED,             /* Hardware Failure */
 176         MGMT_STATUS_CONNECT_FAILED,     /* Page Timeout */
 177         MGMT_STATUS_AUTH_FAILED,        /* Authentication Failed */
 178         MGMT_STATUS_AUTH_FAILED,        /* PIN or Key Missing */
 179         MGMT_STATUS_NO_RESOURCES,       /* Memory Full */
 180         MGMT_STATUS_TIMEOUT,            /* Connection Timeout */
 181         MGMT_STATUS_NO_RESOURCES,       /* Max Number of Connections */
 182         MGMT_STATUS_NO_RESOURCES,       /* Max Number of SCO Connections */
 183         MGMT_STATUS_ALREADY_CONNECTED,  /* ACL Connection Exists */
 184         MGMT_STATUS_BUSY,               /* Command Disallowed */
 185         MGMT_STATUS_NO_RESOURCES,       /* Rejected Limited Resources */
 186         MGMT_STATUS_REJECTED,           /* Rejected Security */
 187         MGMT_STATUS_REJECTED,           /* Rejected Personal */
 188         MGMT_STATUS_TIMEOUT,            /* Host Timeout */
 189         MGMT_STATUS_NOT_SUPPORTED,      /* Unsupported Feature */
 190         MGMT_STATUS_INVALID_PARAMS,     /* Invalid Parameters */
 191         MGMT_STATUS_DISCONNECTED,       /* OE User Ended Connection */
 192         MGMT_STATUS_NO_RESOURCES,       /* OE Low Resources */
 193         MGMT_STATUS_DISCONNECTED,       /* OE Power Off */
 194         MGMT_STATUS_DISCONNECTED,       /* Connection Terminated */
 195         MGMT_STATUS_BUSY,               /* Repeated Attempts */
 196         MGMT_STATUS_REJECTED,           /* Pairing Not Allowed */
 197         MGMT_STATUS_FAILED,             /* Unknown LMP PDU */
 198         MGMT_STATUS_NOT_SUPPORTED,      /* Unsupported Remote Feature */
 199         MGMT_STATUS_REJECTED,           /* SCO Offset Rejected */
 200         MGMT_STATUS_REJECTED,           /* SCO Interval Rejected */
 201         MGMT_STATUS_REJECTED,           /* Air Mode Rejected */
 202         MGMT_STATUS_INVALID_PARAMS,     /* Invalid LMP Parameters */
 203         MGMT_STATUS_FAILED,             /* Unspecified Error */
 204         MGMT_STATUS_NOT_SUPPORTED,      /* Unsupported LMP Parameter Value */
 205         MGMT_STATUS_FAILED,             /* Role Change Not Allowed */
 206         MGMT_STATUS_TIMEOUT,            /* LMP Response Timeout */
 207         MGMT_STATUS_FAILED,             /* LMP Error Transaction Collision */
 208         MGMT_STATUS_FAILED,             /* LMP PDU Not Allowed */
 209         MGMT_STATUS_REJECTED,           /* Encryption Mode Not Accepted */
 210         MGMT_STATUS_FAILED,             /* Unit Link Key Used */
 211         MGMT_STATUS_NOT_SUPPORTED,      /* QoS Not Supported */
 212         MGMT_STATUS_TIMEOUT,            /* Instant Passed */
 213         MGMT_STATUS_NOT_SUPPORTED,      /* Pairing Not Supported */
 214         MGMT_STATUS_FAILED,             /* Transaction Collision */
 215         MGMT_STATUS_INVALID_PARAMS,     /* Unacceptable Parameter */
 216         MGMT_STATUS_REJECTED,           /* QoS Rejected */
 217         MGMT_STATUS_NOT_SUPPORTED,      /* Classification Not Supported */
 218         MGMT_STATUS_REJECTED,           /* Insufficient Security */
 219         MGMT_STATUS_INVALID_PARAMS,     /* Parameter Out Of Range */
 220         MGMT_STATUS_BUSY,               /* Role Switch Pending */
 221         MGMT_STATUS_FAILED,             /* Slot Violation */
 222         MGMT_STATUS_FAILED,             /* Role Switch Failed */
 223         MGMT_STATUS_INVALID_PARAMS,     /* EIR Too Large */
 224         MGMT_STATUS_NOT_SUPPORTED,      /* Simple Pairing Not Supported */
 225         MGMT_STATUS_BUSY,               /* Host Busy Pairing */
 226         MGMT_STATUS_REJECTED,           /* Rejected, No Suitable Channel */
 227         MGMT_STATUS_BUSY,               /* Controller Busy */
 228         MGMT_STATUS_INVALID_PARAMS,     /* Unsuitable Connection Interval */
 229         MGMT_STATUS_TIMEOUT,            /* Directed Advertising Timeout */
 230         MGMT_STATUS_AUTH_FAILED,        /* Terminated Due to MIC Failure */
 231         MGMT_STATUS_CONNECT_FAILED,     /* Connection Establishment Failed */
 232         MGMT_STATUS_CONNECT_FAILED,     /* MAC Connection Failed */
 233 };
 234
 235 static u8 mgmt_status(u8 hci_status)
 236 {
 237         if (hci_status < ARRAY_SIZE(mgmt_status_table))
 238                 return mgmt_status_table[hci_status];
 239
 240         return MGMT_STATUS_FAILED;
 241 }
 242
 243 static int mgmt_index_event(u16 event, struct hci_dev *hdev, void *data,
 244                             u16 len, int flag)
 245 {
 246         return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len,
 247                                flag, NULL);
 248 }
 249
 250 static int mgmt_limited_event(u16 event, struct hci_dev *hdev, void *data,
 251                               u16 len, int flag, struct sock *skip_sk)
 252 {
 253         return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len,
 254                                flag, skip_sk);
 255 }
 256
 257 static int mgmt_generic_event(u16 event, struct hci_dev *hdev, void *data,
 258                               u16 len, struct sock *skip_sk)
 259 {
 260         return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len,
 261                                HCI_MGMT_GENERIC_EVENTS, skip_sk);
 262 }
 263
 264 static int mgmt_event(u16 event, struct hci_dev *hdev, void *data, u16 len,
 265                       struct sock *skip_sk)
 266 {
 267         return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len,
 268                                HCI_SOCK_TRUSTED, skip_sk);
 269 }
 270
 271 static int read_version(struct sock *sk, struct hci_dev *hdev, void *data,
 272                         u16 data_len)
 273 {
 274         struct mgmt_rp_read_version rp;
 275
 276         BT_DBG("sock %p", sk);
 277
 278         rp.version = MGMT_VERSION;
 279         rp.revision = cpu_to_le16(MGMT_REVISION);
 280
 281         return mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_VERSION, 0,
 282                                  &rp, sizeof(rp));
 283 }
 284
 285 static int read_commands(struct sock *sk, struct hci_dev *hdev, void *data,
 286                          u16 data_len)
 287 {
 288         struct mgmt_rp_read_commands *rp;
 289         u16 num_commands, num_events;
 290         size_t rp_size;
 291         int i, err;
 292
 293         BT_DBG("sock %p", sk);
 294
 295         if (hci_sock_test_flag(sk, HCI_SOCK_TRUSTED)) {
 296                 num_commands = ARRAY_SIZE(mgmt_commands);
 297                 num_events = ARRAY_SIZE(mgmt_events);
 298         } else {
 299                 num_commands = ARRAY_SIZE(mgmt_untrusted_commands);
 300                 num_events = ARRAY_SIZE(mgmt_untrusted_events);
 301         }
 302
 303         rp_size = sizeof(*rp) + ((num_commands + num_events) * sizeof(u16));
 304
 305         rp = kmalloc(rp_size, GFP_KERNEL);
 306         if (!rp)
 307                 return -ENOMEM;
 308
 309         rp->num_commands = cpu_to_le16(num_commands);
 310         rp->num_events = cpu_to_le16(num_events);
 311
 312         if (hci_sock_test_flag(sk, HCI_SOCK_TRUSTED)) {
 313                 __le16 *opcode = rp->opcodes;
 314
 315                 for (i = 0; i < num_commands; i++, opcode++)
 316                         put_unaligned_le16(mgmt_commands[i], opcode);
 317
 318                 for (i = 0; i < num_events; i++, opcode++)
 319                         put_unaligned_le16(mgmt_events[i], opcode);
 320         } else {
 321                 __le16 *opcode = rp->opcodes;
 322
 323                 for (i = 0; i < num_commands; i++, opcode++)
 324                         put_unaligned_le16(mgmt_untrusted_commands[i], opcode);
 325
 326                 for (i = 0; i < num_events; i++, opcode++)
 327                         put_unaligned_le16(mgmt_untrusted_events[i], opcode);
 328         }
 329
 330         err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_COMMANDS, 0,
 331                                 rp, rp_size);
 332         kfree(rp);
 333
 334         return err;
 335 }
 336
 337 static int read_index_list(struct sock *sk, struct hci_dev *hdev, void *data,
 338                            u16 data_len)
 339 {
 340         struct mgmt_rp_read_index_list *rp;
 341         struct hci_dev *d;
 342         size_t rp_len;
 343         u16 count;
 344         int err;
 345
 346         BT_DBG("sock %p", sk);
 347
 348         read_lock(&hci_dev_list_lock);
 349
 350         count = 0;
 351         list_for_each_entry(d, &hci_dev_list, list) {
 352                 if (d->dev_type == HCI_BREDR &&
 353                     !hci_dev_test_flag(d, HCI_UNCONFIGURED))
 354                         count++;
 355         }
 356
 357         rp_len = sizeof(*rp) + (2 * count);
 358         rp = kmalloc(rp_len, GFP_ATOMIC);
 359         if (!rp) {
 360                 read_unlock(&hci_dev_list_lock);
 361                 return -ENOMEM;
 362         }
 363
 364         count = 0;
 365         list_for_each_entry(d, &hci_dev_list, list) {
 366                 if (hci_dev_test_flag(d, HCI_SETUP) ||
 367                     hci_dev_test_flag(d, HCI_CONFIG) ||
 368                     hci_dev_test_flag(d, HCI_USER_CHANNEL))
 369                         continue;
 370
 371                 /* Devices marked as raw-only are neither configured
 372                  * nor unconfigured controllers.
 373                  */
 374                 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
 375                         continue;
 376
 377                 if (d->dev_type == HCI_BREDR &&
 378                     !hci_dev_test_flag(d, HCI_UNCONFIGURED)) {
 379                         rp->index[count++] = cpu_to_le16(d->id);
 380                         BT_DBG("Added hci%u", d->id);
 381                 }
 382         }
 383
 384         rp->num_controllers = cpu_to_le16(count);
 385         rp_len = sizeof(*rp) + (2 * count);
 386
 387         read_unlock(&hci_dev_list_lock);
 388
 389         err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_INDEX_LIST,
 390                                 0, rp, rp_len);
 391
 392         kfree(rp);
 393
 394         return err;
 395 }
 396
 397 static int read_unconf_index_list(struct sock *sk, struct hci_dev *hdev,
 398                                   void *data, u16 data_len)
 399 {
 400         struct mgmt_rp_read_unconf_index_list *rp;
 401         struct hci_dev *d;
 402         size_t rp_len;
 403         u16 count;
 404         int err;
 405
 406         BT_DBG("sock %p", sk);
 407
 408         read_lock(&hci_dev_list_lock);
 409
 410         count = 0;
 411         list_for_each_entry(d, &hci_dev_list, list) {
 412                 if (d->dev_type == HCI_BREDR &&
 413                     hci_dev_test_flag(d, HCI_UNCONFIGURED))
 414                         count++;
 415         }
 416
 417         rp_len = sizeof(*rp) + (2 * count);
 418         rp = kmalloc(rp_len, GFP_ATOMIC);
 419         if (!rp) {
 420                 read_unlock(&hci_dev_list_lock);
 421                 return -ENOMEM;
 422         }
 423
 424         count = 0;
 425         list_for_each_entry(d, &hci_dev_list, list) {
 426                 if (hci_dev_test_flag(d, HCI_SETUP) ||
 427                     hci_dev_test_flag(d, HCI_CONFIG) ||
 428                     hci_dev_test_flag(d, HCI_USER_CHANNEL))
 429                         continue;
 430
 431                 /* Devices marked as raw-only are neither configured
 432                  * nor unconfigured controllers.
 433                  */
 434                 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
 435                         continue;
 436
 437                 if (d->dev_type == HCI_BREDR &&
 438                     hci_dev_test_flag(d, HCI_UNCONFIGURED)) {
 439                         rp->index[count++] = cpu_to_le16(d->id);
 440                         BT_DBG("Added hci%u", d->id);
 441                 }
 442         }
 443
 444         rp->num_controllers = cpu_to_le16(count);
 445         rp_len = sizeof(*rp) + (2 * count);
 446
 447         read_unlock(&hci_dev_list_lock);
 448
 449         err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE,
 450                                 MGMT_OP_READ_UNCONF_INDEX_LIST, 0, rp, rp_len);
 451
 452         kfree(rp);
 453
 454         return err;
 455 }
 456
 457 static int read_ext_index_list(struct sock *sk, struct hci_dev *hdev,
 458                                void *data, u16 data_len)
 459 {
 460         struct mgmt_rp_read_ext_index_list *rp;
 461         struct hci_dev *d;
 462         size_t rp_len;
 463         u16 count;
 464         int err;
 465
 466         BT_DBG("sock %p", sk);
 467
 468         read_lock(&hci_dev_list_lock);
 469
 470         count = 0;
 471         list_for_each_entry(d, &hci_dev_list, list) {
 472                 if (d->dev_type == HCI_BREDR || d->dev_type == HCI_AMP)
 473                         count++;
 474         }
 475
 476         rp_len = sizeof(*rp) + (sizeof(rp->entry[0]) * count);
 477         rp = kmalloc(rp_len, GFP_ATOMIC);
 478         if (!rp) {
 479                 read_unlock(&hci_dev_list_lock);
 480                 return -ENOMEM;
 481         }
 482
 483         count = 0;
 484         list_for_each_entry(d, &hci_dev_list, list) {
 485                 if (hci_dev_test_flag(d, HCI_SETUP) ||
 486                     hci_dev_test_flag(d, HCI_CONFIG) ||
 487                     hci_dev_test_flag(d, HCI_USER_CHANNEL))
 488                         continue;
 489
 490                 /* Devices marked as raw-only are neither configured
 491                  * nor unconfigured controllers.
 492                  */
 493                 if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
 494                         continue;
 495
 496                 if (d->dev_type == HCI_BREDR) {
 497                         if (hci_dev_test_flag(d, HCI_UNCONFIGURED))
 498                                 rp->entry[count].type = 0x01;
 499                         else
 500                                 rp->entry[count].type = 0x00;
 501                 } else if (d->dev_type == HCI_AMP) {
 502                         rp->entry[count].type = 0x02;
 503                 } else {
 504                         continue;
 505                 }
 506
 507                 rp->entry[count].bus = d->bus;
 508                 rp->entry[count++].index = cpu_to_le16(d->id);
 509                 BT_DBG("Added hci%u", d->id);
 510         }
 511
 512         rp->num_controllers = cpu_to_le16(count);
 513         rp_len = sizeof(*rp) + (sizeof(rp->entry[0]) * count);
 514
 515         read_unlock(&hci_dev_list_lock);
 516
 517         /* If this command is called at least once, then all the
 518          * default index and unconfigured index events are disabled
 519          * and from now on only extended index events are used.
 520          */
 521         hci_sock_set_flag(sk, HCI_MGMT_EXT_INDEX_EVENTS);
 522         hci_sock_clear_flag(sk, HCI_MGMT_INDEX_EVENTS);
 523         hci_sock_clear_flag(sk, HCI_MGMT_UNCONF_INDEX_EVENTS);
 524
 525         err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE,
 526                                 MGMT_OP_READ_EXT_INDEX_LIST, 0, rp, rp_len);
 527
 528         kfree(rp);
 529
 530         return err;
 531 }
 532
 533 static bool is_configured(struct hci_dev *hdev)
 534 {
 535         if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&
 536             !hci_dev_test_flag(hdev, HCI_EXT_CONFIGURED))
 537                 return false;
 538
 539         if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) &&
 540             !bacmp(&hdev->public_addr, BDADDR_ANY))
 541                 return false;
 542
 543         return true;
 544 }
 545
 546 static __le32 get_missing_options(struct hci_dev *hdev)
 547 {
 548         u32 options = 0;
 549
 550         if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&
 551             !hci_dev_test_flag(hdev, HCI_EXT_CONFIGURED))
 552                 options |= MGMT_OPTION_EXTERNAL_CONFIG;
 553
 554         if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) &&
 555             !bacmp(&hdev->public_addr, BDADDR_ANY))
 556                 options |= MGMT_OPTION_PUBLIC_ADDRESS;
 557
 558         return cpu_to_le32(options);
 559 }
 560
 561 static int new_options(struct hci_dev *hdev, struct sock *skip)
 562 {
 563         __le32 options = get_missing_options(hdev);
 564
 565         return mgmt_generic_event(MGMT_EV_NEW_CONFIG_OPTIONS, hdev, &options,
 566                                   sizeof(options), skip);
 567 }
 568
 569 static int send_options_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev)
 570 {
 571         __le32 options = get_missing_options(hdev);
 572
 573         return mgmt_cmd_complete(sk, hdev->id, opcode, 0, &options,
 574                                  sizeof(options));
 575 }
 576
 577 static int read_config_info(struct sock *sk, struct hci_dev *hdev,
 578                             void *data, u16 data_len)
 579 {
 580         struct mgmt_rp_read_config_info rp;
 581         u32 options = 0;
 582
 583         BT_DBG("sock %p %s", sk, hdev->name);
 584
 585         hci_dev_lock(hdev);
 586
 587         memset(&rp, 0, sizeof(rp));
 588         rp.manufacturer = cpu_to_le16(hdev->manufacturer);
 589
 590         if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))
 591                 options |= MGMT_OPTION_EXTERNAL_CONFIG;
 592
 593         if (hdev->set_bdaddr)
 594                 options |= MGMT_OPTION_PUBLIC_ADDRESS;
 595
 596         rp.supported_options = cpu_to_le32(options);
 597         rp.missing_options = get_missing_options(hdev);
 598
 599         hci_dev_unlock(hdev);
 600
 601         return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_CONFIG_INFO, 0,
 602                                  &rp, sizeof(rp));
 603 }
 604
 605 static u32 get_supported_settings(struct hci_dev *hdev)
 606 {
 607         u32 settings = 0;
 608
 609         settings |= MGMT_SETTING_POWERED;
 610         settings |= MGMT_SETTING_BONDABLE;
 611         settings |= MGMT_SETTING_DEBUG_KEYS;
 612         settings |= MGMT_SETTING_CONNECTABLE;
 613         settings |= MGMT_SETTING_DISCOVERABLE;
 614
 615         if (lmp_bredr_capable(hdev)) {
 616                 if (hdev->hci_ver >= BLUETOOTH_VER_1_2)
 617                         settings |= MGMT_SETTING_FAST_CONNECTABLE;
 618                 settings |= MGMT_SETTING_BREDR;
 619                 settings |= MGMT_SETTING_LINK_SECURITY;
 620
 621                 if (lmp_ssp_capable(hdev)) {
 622                         settings |= MGMT_SETTING_SSP;
 623                         settings |= MGMT_SETTING_HS;
 624                 }
 625
 626                 if (lmp_sc_capable(hdev))
 627                         settings |= MGMT_SETTING_SECURE_CONN;
 628         }
 629
 630         if (lmp_le_capable(hdev)) {
 631                 settings |= MGMT_SETTING_LE;
 632                 settings |= MGMT_SETTING_ADVERTISING;
 633                 settings |= MGMT_SETTING_SECURE_CONN;
 634                 settings |= MGMT_SETTING_PRIVACY;
 635                 settings |= MGMT_SETTING_STATIC_ADDRESS;
 636         }
 637
 638         if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) ||
 639             hdev->set_bdaddr)
 640                 settings |= MGMT_SETTING_CONFIGURATION;
 641
 642         return settings;
 643 }
 644
 645 static u32 get_current_settings(struct hci_dev *hdev)
 646 {
 647         u32 settings = 0;
 648
 649         if (hdev_is_powered(hdev))
 650                 settings |= MGMT_SETTING_POWERED;
 651
 652         if (hci_dev_test_flag(hdev, HCI_CONNECTABLE))
 653                 settings |= MGMT_SETTING_CONNECTABLE;
 654
 655         if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE))
 656                 settings |= MGMT_SETTING_FAST_CONNECTABLE;
 657
 658         if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
 659                 settings |= MGMT_SETTING_DISCOVERABLE;
 660
 661         if (hci_dev_test_flag(hdev, HCI_BONDABLE))
 662                 settings |= MGMT_SETTING_BONDABLE;
 663
 664         if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
 665                 settings |= MGMT_SETTING_BREDR;
 666
 667         if (hci_dev_test_flag(hdev, HCI_LE_ENABLED))
 668                 settings |= MGMT_SETTING_LE;
 669
 670         if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY))
 671                 settings |= MGMT_SETTING_LINK_SECURITY;
 672
 673         if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
 674                 settings |= MGMT_SETTING_SSP;
 675
 676         if (hci_dev_test_flag(hdev, HCI_HS_ENABLED))
 677                 settings |= MGMT_SETTING_HS;
 678
 679         if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
 680                 settings |= MGMT_SETTING_ADVERTISING;
 681
 682         if (hci_dev_test_flag(hdev, HCI_SC_ENABLED))
 683                 settings |= MGMT_SETTING_SECURE_CONN;
 684
 685         if (hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS))
 686                 settings |= MGMT_SETTING_DEBUG_KEYS;
 687
 688         if (hci_dev_test_flag(hdev, HCI_PRIVACY))
 689                 settings |= MGMT_SETTING_PRIVACY;
 690
 691         /* The current setting for static address has two purposes. The
 692          * first is to indicate if the static address will be used and
 693          * the second is to indicate if it is actually set.
 694          *
 695          * This means if the static address is not configured, this flag
 696          * will never be set. If the address is configured, then if the
 697          * address is actually used decides if the flag is set or not.
 698          *
 699          * For single mode LE only controllers and dual-mode controllers
 700          * with BR/EDR disabled, the existence of the static address will
 701          * be evaluated.
 702          */
 703         if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
 704             !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) ||
 705             !bacmp(&hdev->bdaddr, BDADDR_ANY)) {
 706                 if (bacmp(&hdev->static_addr, BDADDR_ANY))
 707                         settings |= MGMT_SETTING_STATIC_ADDRESS;
 708         }
 709
 710         return settings;
 711 }
 712
 713 #define PNP_INFO_SVCLASS_ID             0x1200
 714
 715 static u8 *create_uuid16_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
 716 {
 717         u8 *ptr = data, *uuids_start = NULL;
 718         struct bt_uuid *uuid;
 719
 720         if (len < 4)
 721                 return ptr;
 722
 723         list_for_each_entry(uuid, &hdev->uuids, list) {
 724                 u16 uuid16;
 725
 726                 if (uuid->size != 16)
 727                         continue;
 728
 729                 uuid16 = get_unaligned_le16(&uuid->uuid[12]);
 730                 if (uuid16 < 0x1100)
 731                         continue;
 732
 733                 if (uuid16 == PNP_INFO_SVCLASS_ID)
 734                         continue;
 735
 736                 if (!uuids_start) {
 737                         uuids_start = ptr;
 738                         uuids_start[0] = 1;
 739                         uuids_start[1] = EIR_UUID16_ALL;
 740                         ptr += 2;
 741                 }
 742
 743                 /* Stop if not enough space to put next UUID */
 744                 if ((ptr - data) + sizeof(u16) > len) {
 745                         uuids_start[1] = EIR_UUID16_SOME;
 746                         break;
 747                 }
 748
 749                 *ptr++ = (uuid16 & 0x00ff);
 750                 *ptr++ = (uuid16 & 0xff00) >> 8;
 751                 uuids_start[0] += sizeof(uuid16);
 752         }
 753
 754         return ptr;
 755 }
 756
 757 static u8 *create_uuid32_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
 758 {
 759         u8 *ptr = data, *uuids_start = NULL;
 760         struct bt_uuid *uuid;
 761
 762         if (len < 6)
 763                 return ptr;
 764
 765         list_for_each_entry(uuid, &hdev->uuids, list) {
 766                 if (uuid->size != 32)
 767                         continue;
 768
 769                 if (!uuids_start) {
 770                         uuids_start = ptr;
 771                         uuids_start[0] = 1;
 772                         uuids_start[1] = EIR_UUID32_ALL;
 773                         ptr += 2;
 774                 }
 775
 776                 /* Stop if not enough space to put next UUID */
 777                 if ((ptr - data) + sizeof(u32) > len) {
 778                         uuids_start[1] = EIR_UUID32_SOME;
 779                         break;
 780                 }
 781
 782                 memcpy(ptr, &uuid->uuid[12], sizeof(u32));
 783                 ptr += sizeof(u32);
 784                 uuids_start[0] += sizeof(u32);
 785         }
 786
 787         return ptr;
 788 }
 789
 790 static u8 *create_uuid128_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
 791 {
 792         u8 *ptr = data, *uuids_start = NULL;
 793         struct bt_uuid *uuid;
 794
 795         if (len < 18)
 796                 return ptr;
 797
 798         list_for_each_entry(uuid, &hdev->uuids, list) {
 799                 if (uuid->size != 128)
 800                         continue;
 801
 802                 if (!uuids_start) {
 803                         uuids_start = ptr;
 804                         uuids_start[0] = 1;
 805                         uuids_start[1] = EIR_UUID128_ALL;
 806                         ptr += 2;
 807                 }
 808
 809                 /* Stop if not enough space to put next UUID */
 810                 if ((ptr - data) + 16 > len) {
 811                         uuids_start[1] = EIR_UUID128_SOME;
 812                         break;
 813                 }
 814
 815                 memcpy(ptr, uuid->uuid, 16);
 816                 ptr += 16;
 817                 uuids_start[0] += 16;
 818         }
 819
 820         return ptr;
 821 }
 822
 823 static struct mgmt_pending_cmd *pending_find(u16 opcode, struct hci_dev *hdev)
 824 {
 825         return mgmt_pending_find(HCI_CHANNEL_CONTROL, opcode, hdev);
 826 }
 827
 828 static struct mgmt_pending_cmd *pending_find_data(u16 opcode,
 829                                                   struct hci_dev *hdev,
 830                                                   const void *data)
 831 {
 832         return mgmt_pending_find_data(HCI_CHANNEL_CONTROL, opcode, hdev, data);
 833 }
 834
 835 static u8 get_current_adv_instance(struct hci_dev *hdev)
 836 {
 837         /* The "Set Advertising" setting supersedes the "Add Advertising"
 838          * setting. Here we set the advertising data based on which
 839          * setting was set. When neither apply, default to the global settings,
 840          * represented by instance "0".
 841          */
 842         if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) &&
 843             !hci_dev_test_flag(hdev, HCI_ADVERTISING))
 844                 return hdev->cur_adv_instance;
 845
 846         return 0x00;
 847 }
 848
 849 static u8 create_default_scan_rsp_data(struct hci_dev *hdev, u8 *ptr)
 850 {
 851         u8 ad_len = 0;
 852         size_t name_len;
 853
 854         name_len = strlen(hdev->dev_name);
 855         if (name_len > 0) {
 856                 size_t max_len = HCI_MAX_AD_LENGTH - ad_len - 2;
 857
 858                 if (name_len > max_len) {
 859                         name_len = max_len;
 860                         ptr[1] = EIR_NAME_SHORT;
 861                 } else
 862                         ptr[1] = EIR_NAME_COMPLETE;
 863
 864                 ptr[0] = name_len + 1;
 865
 866                 memcpy(ptr + 2, hdev->dev_name, name_len);
 867
 868                 ad_len += (name_len + 2);
 869                 ptr += (name_len + 2);
 870         }
 871
 872         return ad_len;
 873 }
 874
 875 static u8 create_instance_scan_rsp_data(struct hci_dev *hdev, u8 instance,
 876                                         u8 *ptr)
 877 {
 878         struct adv_info *adv_instance;
 879
 880         adv_instance = hci_find_adv_instance(hdev, instance);
 881         if (!adv_instance)
 882                 return 0;
 883
 884         /* TODO: Set the appropriate entries based on advertising instance flags
 885          * here once flags other than 0 are supported.
 886          */
 887         memcpy(ptr, adv_instance->scan_rsp_data,
 888                adv_instance->scan_rsp_len);
 889
 890         return adv_instance->scan_rsp_len;
 891 }
 892
 893 static void update_inst_scan_rsp_data(struct hci_request *req, u8 instance)
 894 {
 895         struct hci_dev *hdev = req->hdev;
 896         struct hci_cp_le_set_scan_rsp_data cp;
 897         u8 len;
 898
 899         if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
 900                 return;
 901
 902         memset(&cp, 0, sizeof(cp));
 903
 904         if (instance)
 905                 len = create_instance_scan_rsp_data(hdev, instance, cp.data);
 906         else
 907                 len = create_default_scan_rsp_data(hdev, cp.data);
 908
 909         if (hdev->scan_rsp_data_len == len &&
 910             !memcmp(cp.data, hdev->scan_rsp_data, len))
 911                 return;
 912
 913         memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
 914         hdev->scan_rsp_data_len = len;
 915
 916         cp.length = len;
 917
 918         hci_req_add(req, HCI_OP_LE_SET_SCAN_RSP_DATA, sizeof(cp), &cp);
 919 }
 920
 921 static void update_scan_rsp_data(struct hci_request *req)
 922 {
 923         update_inst_scan_rsp_data(req, get_current_adv_instance(req->hdev));
 924 }
 925
 926 static u8 get_adv_discov_flags(struct hci_dev *hdev)
 927 {
 928         struct mgmt_pending_cmd *cmd;
 929
 930         /* If there's a pending mgmt command the flags will not yet have
 931          * their final values, so check for this first.
 932          */
 933         cmd = pending_find(MGMT_OP_SET_DISCOVERABLE, hdev);
 934         if (cmd) {
 935                 struct mgmt_mode *cp = cmd->param;
 936                 if (cp->val == 0x01)
 937                         return LE_AD_GENERAL;
 938                 else if (cp->val == 0x02)
 939                         return LE_AD_LIMITED;
 940         } else {
 941                 if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
 942                         return LE_AD_LIMITED;
 943                 else if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
 944                         return LE_AD_GENERAL;
 945         }
 946
 947         return 0;
 948 }
 949
 950 static bool get_connectable(struct hci_dev *hdev)
 951 {
 952         struct mgmt_pending_cmd *cmd;
 953
 954         /* If there's a pending mgmt command the flag will not yet have
 955          * it's final value, so check for this first.
 956          */
 957         cmd = pending_find(MGMT_OP_SET_CONNECTABLE, hdev);
 958         if (cmd) {
 959                 struct mgmt_mode *cp = cmd->param;
 960
 961                 return cp->val;
 962         }
 963
 964         return hci_dev_test_flag(hdev, HCI_CONNECTABLE);
 965 }
 966
 967 static u32 get_adv_instance_flags(struct hci_dev *hdev, u8 instance)
 968 {
 969         u32 flags;
 970         struct adv_info *adv_instance;
 971
 972         if (instance == 0x00) {
 973                 /* Instance 0 always manages the "Tx Power" and "Flags"
 974                  * fields
 975                  */
 976                 flags = MGMT_ADV_FLAG_TX_POWER | MGMT_ADV_FLAG_MANAGED_FLAGS;
 977
 978                 /* For instance 0, the HCI_ADVERTISING_CONNECTABLE setting
 979                  * corresponds to the "connectable" instance flag.
 980                  */
 981                 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE))
 982                         flags |= MGMT_ADV_FLAG_CONNECTABLE;
 983
 984                 return flags;
 985         }
 986
 987         adv_instance = hci_find_adv_instance(hdev, instance);
 988
 989         /* Return 0 when we got an invalid instance identifier. */
 990         if (!adv_instance)
 991                 return 0;
 992
 993         return adv_instance->flags;
 994 }
 995
 996 static u8 get_cur_adv_instance_scan_rsp_len(struct hci_dev *hdev)
 997 {
 998         u8 instance = get_current_adv_instance(hdev);
 999         struct adv_info *adv_instance;
1000
1001         /* Ignore instance 0 */
1002         if (instance == 0x00)
1003                 return 0;
1004
1005         adv_instance = hci_find_adv_instance(hdev, instance);
1006         if (!adv_instance)
1007                 return 0;
1008
1009         /* TODO: Take into account the "appearance" and "local-name" flags here.
1010          * These are currently being ignored as they are not supported.
1011          */
1012         return adv_instance->scan_rsp_len;
1013 }
1014
1015 static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr)
1016 {
1017         struct adv_info *adv_instance = NULL;
1018         u8 ad_len = 0, flags = 0;
1019         u32 instance_flags;
1020
1021         /* Return 0 when the current instance identifier is invalid. */
1022         if (instance) {
1023                 adv_instance = hci_find_adv_instance(hdev, instance);
1024                 if (!adv_instance)
1025                         return 0;
1026         }
1027
1028         instance_flags = get_adv_instance_flags(hdev, instance);
1029
1030         /* The Add Advertising command allows userspace to set both the general
1031          * and limited discoverable flags.
1032          */
1033         if (instance_flags & MGMT_ADV_FLAG_DISCOV)
1034                 flags |= LE_AD_GENERAL;
1035
1036         if (instance_flags & MGMT_ADV_FLAG_LIMITED_DISCOV)
1037                 flags |= LE_AD_LIMITED;
1038
1039         if (flags || (instance_flags & MGMT_ADV_FLAG_MANAGED_FLAGS)) {
1040                 /* If a discovery flag wasn't provided, simply use the global
1041                  * settings.
1042                  */
1043                 if (!flags)
1044                         flags |= get_adv_discov_flags(hdev);
1045
1046                 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1047                         flags |= LE_AD_NO_BREDR;
1048
1049                 /* If flags would still be empty, then there is no need to
1050                  * include the "Flags" AD field".
1051                  */
1052                 if (flags) {
1053                         ptr[0] = 0x02;
1054                         ptr[1] = EIR_FLAGS;
1055                         ptr[2] = flags;
1056
1057                         ad_len += 3;
1058                         ptr += 3;
1059                 }
1060         }
1061
1062         if (adv_instance) {
1063                 memcpy(ptr, adv_instance->adv_data,
1064                        adv_instance->adv_data_len);
1065                 ad_len += adv_instance->adv_data_len;
1066                 ptr += adv_instance->adv_data_len;
1067         }
1068
1069         /* Provide Tx Power only if we can provide a valid value for it */
1070         if (hdev->adv_tx_power != HCI_TX_POWER_INVALID &&
1071             (instance_flags & MGMT_ADV_FLAG_TX_POWER)) {
1072                 ptr[0] = 0x02;
1073                 ptr[1] = EIR_TX_POWER;
1074                 ptr[2] = (u8)hdev->adv_tx_power;
1075
1076                 ad_len += 3;
1077                 ptr += 3;
1078         }
1079
1080         return ad_len;
1081 }
1082
1083 static void update_inst_adv_data(struct hci_request *req, u8 instance)
1084 {
1085         struct hci_dev *hdev = req->hdev;
1086         struct hci_cp_le_set_adv_data cp;
1087         u8 len;
1088
1089         if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
1090                 return;
1091
1092         memset(&cp, 0, sizeof(cp));
1093
1094         len = create_instance_adv_data(hdev, instance, cp.data);
1095
1096         /* There's nothing to do if the data hasn't changed */
1097         if (hdev->adv_data_len == len &&
1098             memcmp(cp.data, hdev->adv_data, len) == 0)
1099                 return;
1100
1101         memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
1102         hdev->adv_data_len = len;
1103
1104         cp.length = len;
1105
1106         hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp);
1107 }
1108
1109 static void update_adv_data(struct hci_request *req)
1110 {
1111         update_inst_adv_data(req, get_current_adv_instance(req->hdev));
1112 }
1113
1114 int mgmt_update_adv_data(struct hci_dev *hdev)
1115 {
1116         struct hci_request req;
1117
1118         hci_req_init(&req, hdev);
1119         update_adv_data(&req);
1120
1121         return hci_req_run(&req, NULL);
1122 }
1123
1124 static void create_eir(struct hci_dev *hdev, u8 *data)
1125 {
1126         u8 *ptr = data;
1127         size_t name_len;
1128
1129         name_len = strlen(hdev->dev_name);
1130
1131         if (name_len > 0) {
1132                 /* EIR Data type */
1133                 if (name_len > 48) {
1134                         name_len = 48;
1135                         ptr[1] = EIR_NAME_SHORT;
1136                 } else
1137                         ptr[1] = EIR_NAME_COMPLETE;
1138
1139                 /* EIR Data length */
1140                 ptr[0] = name_len + 1;
1141
1142                 memcpy(ptr + 2, hdev->dev_name, name_len);
1143
1144                 ptr += (name_len + 2);
1145         }
1146
1147         if (hdev->inq_tx_power != HCI_TX_POWER_INVALID) {
1148                 ptr[0] = 2;
1149                 ptr[1] = EIR_TX_POWER;
1150                 ptr[2] = (u8) hdev->inq_tx_power;
1151
1152                 ptr += 3;
1153         }
1154
1155         if (hdev->devid_source > 0) {
1156                 ptr[0] = 9;
1157                 ptr[1] = EIR_DEVICE_ID;
1158
1159                 put_unaligned_le16(hdev->devid_source, ptr + 2);
1160                 put_unaligned_le16(hdev->devid_vendor, ptr + 4);
1161                 put_unaligned_le16(hdev->devid_product, ptr + 6);
1162                 put_unaligned_le16(hdev->devid_version, ptr + 8);
1163
1164                 ptr += 10;
1165         }
1166
1167         ptr = create_uuid16_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
1168         ptr = create_uuid32_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
1169         ptr = create_uuid128_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
1170 }
1171
1172 static void update_eir(struct hci_request *req)
1173 {
1174         struct hci_dev *hdev = req->hdev;
1175         struct hci_cp_write_eir cp;
1176
1177         if (!hdev_is_powered(hdev))
1178                 return;
1179
1180         if (!lmp_ext_inq_capable(hdev))
1181                 return;
1182
1183         if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
1184                 return;
1185
1186         if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
1187                 return;
1188
1189         memset(&cp, 0, sizeof(cp));
1190
1191         create_eir(hdev, cp.data);
1192
1193         if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0)
1194                 return;
1195
1196         memcpy(hdev->eir, cp.data, sizeof(cp.data));
1197
1198         hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
1199 }
1200
1201 static u8 get_service_classes(struct hci_dev *hdev)
1202 {
1203         struct bt_uuid *uuid;
1204         u8 val = 0;
1205
1206         list_for_each_entry(uuid, &hdev->uuids, list)
1207                 val |= uuid->svc_hint;
1208
1209         return val;
1210 }
1211
1212 static void update_class(struct hci_request *req)
1213 {
1214         struct hci_dev *hdev = req->hdev;
1215         u8 cod[3];
1216
1217         BT_DBG("%s", hdev->name);
1218
1219         if (!hdev_is_powered(hdev))
1220                 return;
1221
1222         if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1223                 return;
1224
1225         if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
1226                 return;
1227
1228         cod[0] = hdev->minor_class;
1229         cod[1] = hdev->major_class;
1230         cod[2] = get_service_classes(hdev);
1231
1232         if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
1233                 cod[1] |= 0x20;
1234
1235         if (memcmp(cod, hdev->dev_class, 3) == 0)
1236                 return;
1237
1238         hci_req_add(req, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod);
1239 }
1240
1241 static void disable_advertising(struct hci_request *req)
1242 {
1243         u8 enable = 0x00;
1244
1245         hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
1246 }
1247
1248 static void enable_advertising(struct hci_request *req)
1249 {
1250         struct hci_dev *hdev = req->hdev;
1251         struct hci_cp_le_set_adv_param cp;
1252         u8 own_addr_type, enable = 0x01;
1253         bool connectable;
1254         u8 instance;
1255         u32 flags;
1256
1257         if (hci_conn_num(hdev, LE_LINK) > 0)
1258                 return;
1259
1260         if (hci_dev_test_flag(hdev, HCI_LE_ADV))
1261                 disable_advertising(req);
1262
1263         /* Clear the HCI_LE_ADV bit temporarily so that the
1264          * hci_update_random_address knows that it's safe to go ahead
1265          * and write a new random address. The flag will be set back on
1266          * as soon as the SET_ADV_ENABLE HCI command completes.
1267          */
1268         hci_dev_clear_flag(hdev, HCI_LE_ADV);
1269
1270         instance = get_current_adv_instance(hdev);
1271         flags = get_adv_instance_flags(hdev, instance);
1272
1273         /* If the "connectable" instance flag was not set, then choose between
1274          * ADV_IND and ADV_NONCONN_IND based on the global connectable setting.
1275          */
1276         connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
1277                       get_connectable(hdev);
1278
1279         /* Set require_privacy to true only when non-connectable
1280          * advertising is used. In that case it is fine to use a
1281          * non-resolvable private address.
1282          */
1283         if (hci_update_random_address(req, !connectable, &own_addr_type) < 0)
1284                 return;
1285
1286         memset(&cp, 0, sizeof(cp));
1287         cp.min_interval = cpu_to_le16(hdev->le_adv_min_interval);
1288         cp.max_interval = cpu_to_le16(hdev->le_adv_max_interval);
1289
1290         if (connectable)
1291                 cp.type = LE_ADV_IND;
1292         else if (get_cur_adv_instance_scan_rsp_len(hdev))
1293                 cp.type = LE_ADV_SCAN_IND;
1294         else
1295                 cp.type = LE_ADV_NONCONN_IND;
1296
1297         cp.own_address_type = own_addr_type;
1298         cp.channel_map = hdev->le_adv_channel_map;
1299
1300         hci_req_add(req, HCI_OP_LE_SET_ADV_PARAM, sizeof(cp), &cp);
1301
1302         hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
1303 }
1304
1305 static void service_cache_off(struct work_struct *work)
1306 {
1307         struct hci_dev *hdev = container_of(work, struct hci_dev,
1308                                             service_cache.work);
1309         struct hci_request req;
1310
1311         if (!hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE))
1312                 return;
1313
1314         hci_req_init(&req, hdev);
1315
1316         hci_dev_lock(hdev);
1317
1318         update_eir(&req);
1319         update_class(&req);
1320
1321         hci_dev_unlock(hdev);
1322
1323         hci_req_run(&req, NULL);
1324 }
1325
1326 static void rpa_expired(struct work_struct *work)
1327 {
1328         struct hci_dev *hdev = container_of(work, struct hci_dev,
1329                                             rpa_expired.work);
1330         struct hci_request req;
1331
1332         BT_DBG("");
1333
1334         hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
1335
1336         if (!hci_dev_test_flag(hdev, HCI_ADVERTISING))
1337                 return;
1338
1339         /* The generation of a new RPA and programming it into the
1340          * controller happens in the enable_advertising() function.
1341          */
1342         hci_req_init(&req, hdev);
1343         enable_advertising(&req);
1344         hci_req_run(&req, NULL);
1345 }
1346
1347 static void mgmt_init_hdev(struct sock *sk, struct hci_dev *hdev)
1348 {
1349         if (hci_dev_test_and_set_flag(hdev, HCI_MGMT))
1350                 return;
1351
1352         INIT_DELAYED_WORK(&hdev->service_cache, service_cache_off);
1353         INIT_DELAYED_WORK(&hdev->rpa_expired, rpa_expired);
1354
1355         /* Non-mgmt controlled devices get this bit set
1356          * implicitly so that pairing works for them, however
1357          * for mgmt we require user-space to explicitly enable
1358          * it
1359          */
1360         hci_dev_clear_flag(hdev, HCI_BONDABLE);
1361 }
1362
1363 static int read_controller_info(struct sock *sk, struct hci_dev *hdev,
1364                                 void *data, u16 data_len)
1365 {
1366         struct mgmt_rp_read_info rp;
1367
1368         BT_DBG("sock %p %s", sk, hdev->name);
1369
1370         hci_dev_lock(hdev);
1371
1372         memset(&rp, 0, sizeof(rp));
1373
1374         bacpy(&rp.bdaddr, &hdev->bdaddr);
1375
1376         rp.version = hdev->hci_ver;
1377         rp.manufacturer = cpu_to_le16(hdev->manufacturer);
1378
1379         rp.supported_settings = cpu_to_le32(get_supported_settings(hdev));
1380         rp.current_settings = cpu_to_le32(get_current_settings(hdev));
1381
1382         memcpy(rp.dev_class, hdev->dev_class, 3);
1383
1384         memcpy(rp.name, hdev->dev_name, sizeof(hdev->dev_name));
1385         memcpy(rp.short_name, hdev->short_name, sizeof(hdev->short_name));
1386
1387         hci_dev_unlock(hdev);
1388
1389         return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_INFO, 0, &rp,
1390                                  sizeof(rp));
1391 }
1392
1393 static int send_settings_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev)
1394 {
1395         __le32 settings = cpu_to_le32(get_current_settings(hdev));
1396
1397         return mgmt_cmd_complete(sk, hdev->id, opcode, 0, &settings,
1398                                  sizeof(settings));
1399 }
1400
1401 static void clean_up_hci_complete(struct hci_dev *hdev, u8 status, u16 opcode)
1402 {
1403         BT_DBG("%s status 0x%02x", hdev->name, status);
1404
1405         if (hci_conn_count(hdev) == 0) {
1406                 cancel_delayed_work(&hdev->power_off);
1407                 queue_work(hdev->req_workqueue, &hdev->power_off.work);
1408         }
1409 }
1410
1411 static bool hci_stop_discovery(struct hci_request *req)
1412 {
1413         struct hci_dev *hdev = req->hdev;
1414         struct hci_cp_remote_name_req_cancel cp;
1415         struct inquiry_entry *e;
1416
1417         switch (hdev->discovery.state) {
1418         case DISCOVERY_FINDING:
1419                 if (test_bit(HCI_INQUIRY, &hdev->flags))
1420                         hci_req_add(req, HCI_OP_INQUIRY_CANCEL, 0, NULL);
1421
1422                 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
1423                         cancel_delayed_work(&hdev->le_scan_disable);
1424                         hci_req_add_le_scan_disable(req);
1425                 }
1426
1427                 return true;
1428
1429         case DISCOVERY_RESOLVING:
1430                 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY,
1431                                                      NAME_PENDING);
1432                 if (!e)
1433                         break;
1434
1435                 bacpy(&cp.bdaddr, &e->data.bdaddr);
1436                 hci_req_add(req, HCI_OP_REMOTE_NAME_REQ_CANCEL, sizeof(cp),
1437                             &cp);
1438
1439                 return true;
1440
1441         default:
1442                 /* Passive scanning */
1443                 if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) {
1444                         hci_req_add_le_scan_disable(req);
1445                         return true;
1446                 }
1447
1448                 break;
1449         }
1450
1451         return false;
1452 }
1453
1454 static void advertising_added(struct sock *sk, struct hci_dev *hdev,
1455                               u8 instance)
1456 {
1457         struct mgmt_ev_advertising_added ev;
1458
1459         ev.instance = instance;
1460
1461         mgmt_event(MGMT_EV_ADVERTISING_ADDED, hdev, &ev, sizeof(ev), sk);
1462 }
1463
1464 static void advertising_removed(struct sock *sk, struct hci_dev *hdev,
1465                                 u8 instance)
1466 {
1467         struct mgmt_ev_advertising_removed ev;
1468
1469         ev.instance = instance;
1470
1471         mgmt_event(MGMT_EV_ADVERTISING_REMOVED, hdev, &ev, sizeof(ev), sk);
1472 }
1473
1474 static int schedule_adv_instance(struct hci_request *req, u8 instance,
1475                                  bool force) {
1476         struct hci_dev *hdev = req->hdev;
1477         struct adv_info *adv_instance = NULL;
1478         u16 timeout;
1479
1480         if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
1481             !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))
1482                 return -EPERM;
1483
1484         if (hdev->adv_instance_timeout)
1485                 return -EBUSY;
1486
1487         adv_instance = hci_find_adv_instance(hdev, instance);
1488         if (!adv_instance)
1489                 return -ENOENT;
1490
1491         /* A zero timeout means unlimited advertising. As long as there is
1492          * only one instance, duration should be ignored. We still set a timeout
1493          * in case further instances are being added later on.
1494          *
1495          * If the remaining lifetime of the instance is more than the duration
1496          * then the timeout corresponds to the duration, otherwise it will be
1497          * reduced to the remaining instance lifetime.
1498          */
1499         if (adv_instance->timeout == 0 ||
1500             adv_instance->duration <= adv_instance->remaining_time)
1501                 timeout = adv_instance->duration;
1502         else
1503                 timeout = adv_instance->remaining_time;
1504
1505         /* The remaining time is being reduced unless the instance is being
1506          * advertised without time limit.
1507          */
1508         if (adv_instance->timeout)
1509                 adv_instance->remaining_time =
1510                                 adv_instance->remaining_time - timeout;
1511
1512         hdev->adv_instance_timeout = timeout;
1513         queue_delayed_work(hdev->workqueue,
1514                            &hdev->adv_instance_expire,
1515                            msecs_to_jiffies(timeout * 1000));
1516
1517         /* If we're just re-scheduling the same instance again then do not
1518          * execute any HCI commands. This happens when a single instance is
1519          * being advertised.
1520          */
1521         if (!force && hdev->cur_adv_instance == instance &&
1522             hci_dev_test_flag(hdev, HCI_LE_ADV))
1523                 return 0;
1524
1525         hdev->cur_adv_instance = instance;
1526         update_adv_data(req);
1527         update_scan_rsp_data(req);
1528         enable_advertising(req);
1529
1530         return 0;
1531 }
1532
1533 static void cancel_adv_timeout(struct hci_dev *hdev)
1534 {
1535         if (hdev->adv_instance_timeout) {
1536                 hdev->adv_instance_timeout = 0;
1537                 cancel_delayed_work(&hdev->adv_instance_expire);
1538         }
1539 }
1540
1541 /* For a single instance:
1542  * - force == true: The instance will be removed even when its remaining
1543  *   lifetime is not zero.
1544  * - force == false: the instance will be deactivated but kept stored unless
1545  *   the remaining lifetime is zero.
1546  *
1547  * For instance == 0x00:
1548  * - force == true: All instances will be removed regardless of their timeout
1549  *   setting.
1550  * - force == false: Only instances that have a timeout will be removed.
1551  */
1552 static void clear_adv_instance(struct hci_dev *hdev, struct hci_request *req,
1553                                u8 instance, bool force)
1554 {
1555         struct adv_info *adv_instance, *n, *next_instance = NULL;
1556         int err;
1557         u8 rem_inst;
1558
1559         /* Cancel any timeout concerning the removed instance(s). */
1560         if (!instance || hdev->cur_adv_instance == instance)
1561                 cancel_adv_timeout(hdev);
1562
1563         /* Get the next instance to advertise BEFORE we remove
1564          * the current one. This can be the same instance again
1565          * if there is only one instance.
1566          */
1567         if (instance && hdev->cur_adv_instance == instance)
1568                 next_instance = hci_get_next_instance(hdev, instance);
1569
1570         if (instance == 0x00) {
1571                 list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances,
1572                                          list) {
1573                         if (!(force || adv_instance->timeout))
1574                                 continue;
1575
1576                         rem_inst = adv_instance->instance;
1577                         err = hci_remove_adv_instance(hdev, rem_inst);
1578                         if (!err)
1579                                 advertising_removed(NULL, hdev, rem_inst);
1580                 }
1581                 hdev->cur_adv_instance = 0x00;
1582         } else {
1583                 adv_instance = hci_find_adv_instance(hdev, instance);
1584
1585                 if (force || (adv_instance && adv_instance->timeout &&
1586                               !adv_instance->remaining_time)) {
1587                         /* Don't advertise a removed instance. */
1588                         if (next_instance &&
1589                             next_instance->instance == instance)
1590                                 next_instance = NULL;
1591
1592                         err = hci_remove_adv_instance(hdev, instance);
1593                         if (!err)
1594                                 advertising_removed(NULL, hdev, instance);
1595                 }
1596         }
1597
1598         if (list_empty(&hdev->adv_instances)) {
1599                 hdev->cur_adv_instance = 0x00;
1600                 hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE);
1601         }
1602
1603         if (!req || !hdev_is_powered(hdev) ||
1604             hci_dev_test_flag(hdev, HCI_ADVERTISING))
1605                 return;
1606
1607         if (next_instance)
1608                 schedule_adv_instance(req, next_instance->instance, false);
1609 }
1610
1611 static int clean_up_hci_state(struct hci_dev *hdev)
1612 {
1613         struct hci_request req;
1614         struct hci_conn *conn;
1615         bool discov_stopped;
1616         int err;
1617
1618         hci_req_init(&req, hdev);
1619
1620         if (test_bit(HCI_ISCAN, &hdev->flags) ||
1621             test_bit(HCI_PSCAN, &hdev->flags)) {
1622                 u8 scan = 0x00;
1623                 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
1624         }
1625
1626         clear_adv_instance(hdev, NULL, 0x00, false);
1627
1628         if (hci_dev_test_flag(hdev, HCI_LE_ADV))
1629                 disable_advertising(&req);
1630
1631         discov_stopped = hci_stop_discovery(&req);
1632
1633         list_for_each_entry(conn, &hdev->conn_hash.list, list) {
1634                 struct hci_cp_disconnect dc;
1635                 struct hci_cp_reject_conn_req rej;
1636
1637                 switch (conn->state) {
1638                 case BT_CONNECTED:
1639                 case BT_CONFIG:
1640                         dc.handle = cpu_to_le16(conn->handle);
1641                         dc.reason = 0x15; /* Terminated due to Power Off */
1642                         hci_req_add(&req, HCI_OP_DISCONNECT, sizeof(dc), &dc);
1643                         break;
1644                 case BT_CONNECT:
1645                         if (conn->type == LE_LINK)
1646                                 hci_req_add(&req, HCI_OP_LE_CREATE_CONN_CANCEL,
1647                                             0, NULL);
1648                         else if (conn->type == ACL_LINK)
1649                                 hci_req_add(&req, HCI_OP_CREATE_CONN_CANCEL,
1650                                             6, &conn->dst);
1651                         break;
1652                 case BT_CONNECT2:
1653                         bacpy(&rej.bdaddr, &conn->dst);
1654                         rej.reason = 0x15; /* Terminated due to Power Off */
1655                         if (conn->type == ACL_LINK)
1656                                 hci_req_add(&req, HCI_OP_REJECT_CONN_REQ,
1657                                             sizeof(rej), &rej);
1658                         else if (conn->type == SCO_LINK)
1659                                 hci_req_add(&req, HCI_OP_REJECT_SYNC_CONN_REQ,
1660                                             sizeof(rej), &rej);
1661                         break;
1662                 }
1663         }
1664
1665         err = hci_req_run(&req, clean_up_hci_complete);
1666         if (!err && discov_stopped)
1667                 hci_discovery_set_state(hdev, DISCOVERY_STOPPING);
1668
1669         return err;
1670 }
1671
1672 static int set_powered(struct sock *sk, struct hci_dev *hdev, void *data,
1673                        u16 len)
1674 {
1675         struct mgmt_mode *cp = data;
1676         struct mgmt_pending_cmd *cmd;
1677         int err;
1678
1679         BT_DBG("request for %s", hdev->name);
1680
1681         if (cp->val != 0x00 && cp->val != 0x01)
1682                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_POWERED,
1683                                        MGMT_STATUS_INVALID_PARAMS);
1684
1685         hci_dev_lock(hdev);
1686
1687         if (pending_find(MGMT_OP_SET_POWERED, hdev)) {
1688                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_POWERED,
1689                                       MGMT_STATUS_BUSY);
1690                 goto failed;
1691         }
1692
1693         if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) {
1694                 cancel_delayed_work(&hdev->power_off);
1695
1696                 if (cp->val) {
1697                         mgmt_pending_add(sk, MGMT_OP_SET_POWERED, hdev,
1698                                          data, len);
1699                         err = mgmt_powered(hdev, 1);
1700                         goto failed;
1701                 }
1702         }
1703
1704         if (!!cp->val == hdev_is_powered(hdev)) {
1705                 err = send_settings_rsp(sk, MGMT_OP_SET_POWERED, hdev);
1706                 goto failed;
1707         }
1708
1709         cmd = mgmt_pending_add(sk, MGMT_OP_SET_POWERED, hdev, data, len);
1710         if (!cmd) {
1711                 err = -ENOMEM;
1712                 goto failed;
1713         }
1714
1715         if (cp->val) {
1716                 queue_work(hdev->req_workqueue, &hdev->power_on);
1717                 err = 0;
1718         } else {
1719                 /* Disconnect connections, stop scans, etc */
1720                 err = clean_up_hci_state(hdev);
1721                 if (!err)
1722                         queue_delayed_work(hdev->req_workqueue, &hdev->power_off,
1723                                            HCI_POWER_OFF_TIMEOUT);
1724
1725                 /* ENODATA means there were no HCI commands queued */
1726                 if (err == -ENODATA) {
1727                         cancel_delayed_work(&hdev->power_off);
1728                         queue_work(hdev->req_workqueue, &hdev->power_off.work);
1729                         err = 0;
1730                 }
1731         }
1732
1733 failed:
1734         hci_dev_unlock(hdev);
1735         return err;
1736 }
1737
1738 static int new_settings(struct hci_dev *hdev, struct sock *skip)
1739 {
1740         __le32 ev = cpu_to_le32(get_current_settings(hdev));
1741
1742         return mgmt_generic_event(MGMT_EV_NEW_SETTINGS, hdev, &ev,
1743                                   sizeof(ev), skip);
1744 }
1745
1746 int mgmt_new_settings(struct hci_dev *hdev)
1747 {
1748         return new_settings(hdev, NULL);
1749 }
1750
1751 struct cmd_lookup {
1752         struct sock *sk;
1753         struct hci_dev *hdev;
1754         u8 mgmt_status;
1755 };
1756
1757 static void settings_rsp(struct mgmt_pending_cmd *cmd, void *data)
1758 {
1759         struct cmd_lookup *match = data;
1760
1761         send_settings_rsp(cmd->sk, cmd->opcode, match->hdev);
1762
1763         list_del(&cmd->list);
1764
1765         if (match->sk == NULL) {
1766                 match->sk = cmd->sk;
1767                 sock_hold(match->sk);
1768         }
1769
1770         mgmt_pending_free(cmd);
1771 }
1772
1773 static void cmd_status_rsp(struct mgmt_pending_cmd *cmd, void *data)
1774 {
1775         u8 *status = data;
1776
1777         mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, *status);
1778         mgmt_pending_remove(cmd);
1779 }
1780
1781 static void cmd_complete_rsp(struct mgmt_pending_cmd *cmd, void *data)
1782 {
1783         if (cmd->cmd_complete) {
1784                 u8 *status = data;
1785
1786                 cmd->cmd_complete(cmd, *status);
1787                 mgmt_pending_remove(cmd);
1788
1789                 return;
1790         }
1791
1792         cmd_status_rsp(cmd, data);
1793 }
1794
1795 static int generic_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
1796 {
1797         return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status,
1798                                  cmd->param, cmd->param_len);
1799 }
1800
1801 static int addr_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
1802 {
1803         return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status,
1804                                  cmd->param, sizeof(struct mgmt_addr_info));
1805 }
1806
1807 static u8 mgmt_bredr_support(struct hci_dev *hdev)
1808 {
1809         if (!lmp_bredr_capable(hdev))
1810                 return MGMT_STATUS_NOT_SUPPORTED;
1811         else if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1812                 return MGMT_STATUS_REJECTED;
1813         else
1814                 return MGMT_STATUS_SUCCESS;
1815 }
1816
1817 static u8 mgmt_le_support(struct hci_dev *hdev)
1818 {
1819         if (!lmp_le_capable(hdev))
1820                 return MGMT_STATUS_NOT_SUPPORTED;
1821         else if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
1822                 return MGMT_STATUS_REJECTED;
1823         else
1824                 return MGMT_STATUS_SUCCESS;
1825 }
1826
1827 static void set_discoverable_complete(struct hci_dev *hdev, u8 status,
1828                                       u16 opcode)
1829 {
1830         struct mgmt_pending_cmd *cmd;
1831         struct mgmt_mode *cp;
1832         struct hci_request req;
1833         bool changed;
1834
1835         BT_DBG("status 0x%02x", status);
1836
1837         hci_dev_lock(hdev);
1838
1839         cmd = pending_find(MGMT_OP_SET_DISCOVERABLE, hdev);
1840         if (!cmd)
1841                 goto unlock;
1842
1843         if (status) {
1844                 u8 mgmt_err = mgmt_status(status);
1845                 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
1846                 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
1847                 goto remove_cmd;
1848         }
1849
1850         cp = cmd->param;
1851         if (cp->val) {
1852                 changed = !hci_dev_test_and_set_flag(hdev, HCI_DISCOVERABLE);
1853
1854                 if (hdev->discov_timeout > 0) {
1855                         int to = msecs_to_jiffies(hdev->discov_timeout * 1000);
1856                         queue_delayed_work(hdev->workqueue, &hdev->discov_off,
1857                                            to);
1858                 }
1859         } else {
1860                 changed = hci_dev_test_and_clear_flag(hdev, HCI_DISCOVERABLE);
1861         }
1862
1863         send_settings_rsp(cmd->sk, MGMT_OP_SET_DISCOVERABLE, hdev);
1864
1865         if (changed)
1866                 new_settings(hdev, cmd->sk);
1867
1868         /* When the discoverable mode gets changed, make sure
1869          * that class of device has the limited discoverable
1870          * bit correctly set. Also update page scan based on whitelist
1871          * entries.
1872          */
1873         hci_req_init(&req, hdev);
1874         __hci_update_page_scan(&req);
1875         update_class(&req);
1876         hci_req_run(&req, NULL);
1877
1878 remove_cmd:
1879         mgmt_pending_remove(cmd);
1880
1881 unlock:
1882         hci_dev_unlock(hdev);
1883 }
1884
1885 static int set_discoverable(struct sock *sk, struct hci_dev *hdev, void *data,
1886                             u16 len)
1887 {
1888         struct mgmt_cp_set_discoverable *cp = data;
1889         struct mgmt_pending_cmd *cmd;
1890         struct hci_request req;
1891         u16 timeout;
1892         u8 scan;
1893         int err;
1894
1895         BT_DBG("request for %s", hdev->name);
1896
1897         if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
1898             !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1899                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1900                                        MGMT_STATUS_REJECTED);
1901
1902         if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
1903                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1904                                        MGMT_STATUS_INVALID_PARAMS);
1905
1906         timeout = __le16_to_cpu(cp->timeout);
1907
1908         /* Disabling discoverable requires that no timeout is set,
1909          * and enabling limited discoverable requires a timeout.
1910          */
1911         if ((cp->val == 0x00 && timeout > 0) ||
1912             (cp->val == 0x02 && timeout == 0))
1913                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1914                                        MGMT_STATUS_INVALID_PARAMS);
1915
1916         hci_dev_lock(hdev);
1917
1918         if (!hdev_is_powered(hdev) && timeout > 0) {
1919                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1920                                       MGMT_STATUS_NOT_POWERED);
1921                 goto failed;
1922         }
1923
1924         if (pending_find(MGMT_OP_SET_DISCOVERABLE, hdev) ||
1925             pending_find(MGMT_OP_SET_CONNECTABLE, hdev)) {
1926                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1927                                       MGMT_STATUS_BUSY);
1928                 goto failed;
1929         }
1930
1931         if (!hci_dev_test_flag(hdev, HCI_CONNECTABLE)) {
1932                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE,
1933                                       MGMT_STATUS_REJECTED);
1934                 goto failed;
1935         }
1936
1937         if (!hdev_is_powered(hdev)) {
1938                 bool changed = false;
1939
1940                 /* Setting limited discoverable when powered off is
1941                  * not a valid operation since it requires a timeout
1942                  * and so no need to check HCI_LIMITED_DISCOVERABLE.
1943                  */
1944                 if (!!cp->val != hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) {
1945                         hci_dev_change_flag(hdev, HCI_DISCOVERABLE);
1946                         changed = true;
1947                 }
1948
1949                 err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev);
1950                 if (err < 0)
1951                         goto failed;
1952
1953                 if (changed)
1954                         err = new_settings(hdev, sk);
1955
1956                 goto failed;
1957         }
1958
1959         /* If the current mode is the same, then just update the timeout
1960          * value with the new value. And if only the timeout gets updated,
1961          * then no need for any HCI transactions.
1962          */
1963         if (!!cp->val == hci_dev_test_flag(hdev, HCI_DISCOVERABLE) &&
1964             (cp->val == 0x02) == hci_dev_test_flag(hdev,
1965                                                    HCI_LIMITED_DISCOVERABLE)) {
1966                 cancel_delayed_work(&hdev->discov_off);
1967                 hdev->discov_timeout = timeout;
1968
1969                 if (cp->val && hdev->discov_timeout > 0) {
1970                         int to = msecs_to_jiffies(hdev->discov_timeout * 1000);
1971                         queue_delayed_work(hdev->workqueue, &hdev->discov_off,
1972                                            to);
1973                 }
1974
1975                 err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev);
1976                 goto failed;
1977         }
1978
1979         cmd = mgmt_pending_add(sk, MGMT_OP_SET_DISCOVERABLE, hdev, data, len);
1980         if (!cmd) {
1981                 err = -ENOMEM;
1982                 goto failed;
1983         }
1984
1985         /* Cancel any potential discoverable timeout that might be
1986          * still active and store new timeout value. The arming of
1987          * the timeout happens in the complete handler.
1988          */
1989         cancel_delayed_work(&hdev->discov_off);
1990         hdev->discov_timeout = timeout;
1991
1992         /* Limited discoverable mode */
1993         if (cp->val == 0x02)
1994                 hci_dev_set_flag(hdev, HCI_LIMITED_DISCOVERABLE);
1995         else
1996                 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
1997
1998         hci_req_init(&req, hdev);
1999
2000         /* The procedure for LE-only controllers is much simpler - just
2001          * update the advertising data.
2002          */
2003         if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
2004                 goto update_ad;
2005
2006         scan = SCAN_PAGE;
2007
2008         if (cp->val) {
2009                 struct hci_cp_write_current_iac_lap hci_cp;
2010
2011                 if (cp->val == 0x02) {
2012                         /* Limited discoverable mode */
2013                         hci_cp.num_iac = min_t(u8, hdev->num_iac, 2);
2014                         hci_cp.iac_lap[0] = 0x00;       /* LIAC */
2015                         hci_cp.iac_lap[1] = 0x8b;
2016                         hci_cp.iac_lap[2] = 0x9e;
2017                         hci_cp.iac_lap[3] = 0x33;       /* GIAC */
2018                         hci_cp.iac_lap[4] = 0x8b;
2019                         hci_cp.iac_lap[5] = 0x9e;
2020                 } else {
2021                         /* General discoverable mode */
2022                         hci_cp.num_iac = 1;
2023                         hci_cp.iac_lap[0] = 0x33;       /* GIAC */
2024                         hci_cp.iac_lap[1] = 0x8b;
2025                         hci_cp.iac_lap[2] = 0x9e;
2026                 }
2027
2028                 hci_req_add(&req, HCI_OP_WRITE_CURRENT_IAC_LAP,
2029                             (hci_cp.num_iac * 3) + 1, &hci_cp);
2030
2031                 scan |= SCAN_INQUIRY;
2032         } else {
2033                 hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
2034         }
2035
2036         hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan);
2037
2038 update_ad:
2039         update_adv_data(&req);
2040
2041         err = hci_req_run(&req, set_discoverable_complete);
2042         if (err < 0)
2043                 mgmt_pending_remove(cmd);
2044
2045 failed:
2046         hci_dev_unlock(hdev);
2047         return err;
2048 }
2049
2050 static void write_fast_connectable(struct hci_request *req, bool enable)
2051 {
2052         struct hci_dev *hdev = req->hdev;
2053         struct hci_cp_write_page_scan_activity acp;
2054         u8 type;
2055
2056         if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
2057                 return;
2058
2059         if (hdev->hci_ver < BLUETOOTH_VER_1_2)
2060                 return;
2061
2062         if (enable) {
2063                 type = PAGE_SCAN_TYPE_INTERLACED;
2064
2065                 /* 160 msec page scan interval */
2066                 acp.interval = cpu_to_le16(0x0100);
2067         } else {
2068                 type = PAGE_SCAN_TYPE_STANDARD; /* default */
2069
2070                 /* default 1.28 sec page scan */
2071                 acp.interval = cpu_to_le16(0x0800);
2072         }
2073
2074         acp.window = cpu_to_le16(0x0012);
2075
2076         if (__cpu_to_le16(hdev->page_scan_interval) != acp.interval ||
2077             __cpu_to_le16(hdev->page_scan_window) != acp.window)
2078                 hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
2079                             sizeof(acp), &acp);
2080
2081         if (hdev->page_scan_type != type)
2082                 hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type);
2083 }
2084
2085 static void set_connectable_complete(struct hci_dev *hdev, u8 status,
2086                                      u16 opcode)
2087 {
2088         struct mgmt_pending_cmd *cmd;
2089         struct mgmt_mode *cp;
2090         bool conn_changed, discov_changed;
2091
2092         BT_DBG("status 0x%02x", status);
2093
2094         hci_dev_lock(hdev);
2095
2096         cmd = pending_find(MGMT_OP_SET_CONNECTABLE, hdev);
2097         if (!cmd)
2098                 goto unlock;
2099
2100         if (status) {
2101                 u8 mgmt_err = mgmt_status(status);
2102                 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
2103                 goto remove_cmd;
2104         }
2105
2106         cp = cmd->param;
2107         if (cp->val) {
2108                 conn_changed = !hci_dev_test_and_set_flag(hdev,
2109                                                           HCI_CONNECTABLE);
2110                 discov_changed = false;
2111         } else {
2112                 conn_changed = hci_dev_test_and_clear_flag(hdev,
2113                                                            HCI_CONNECTABLE);
2114                 discov_changed = hci_dev_test_and_clear_flag(hdev,
2115                                                              HCI_DISCOVERABLE);
2116         }
2117
2118         send_settings_rsp(cmd->sk, MGMT_OP_SET_CONNECTABLE, hdev);
2119
2120         if (conn_changed || discov_changed) {
2121                 new_settings(hdev, cmd->sk);
2122                 hci_update_page_scan(hdev);
2123                 if (discov_changed)
2124                         mgmt_update_adv_data(hdev);
2125                 hci_update_background_scan(hdev);
2126         }
2127
2128 remove_cmd:
2129         mgmt_pending_remove(cmd);
2130
2131 unlock:
2132         hci_dev_unlock(hdev);
2133 }
2134
2135 static int set_connectable_update_settings(struct hci_dev *hdev,
2136                                            struct sock *sk, u8 val)
2137 {
2138         bool changed = false;
2139         int err;
2140
2141         if (!!val != hci_dev_test_flag(hdev, HCI_CONNECTABLE))
2142                 changed = true;
2143
2144         if (val) {
2145                 hci_dev_set_flag(hdev, HCI_CONNECTABLE);
2146         } else {
2147                 hci_dev_clear_flag(hdev, HCI_CONNECTABLE);
2148                 hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
2149         }
2150
2151         err = send_settings_rsp(sk, MGMT_OP_SET_CONNECTABLE, hdev);
2152         if (err < 0)
2153                 return err;
2154
2155         if (changed) {
2156                 hci_update_page_scan(hdev);
2157                 hci_update_background_scan(hdev);
2158                 return new_settings(hdev, sk);
2159         }
2160
2161         return 0;
2162 }
2163
2164 static int set_connectable(struct sock *sk, struct hci_dev *hdev, void *data,
2165                            u16 len)
2166 {
2167         struct mgmt_mode *cp = data;
2168         struct mgmt_pending_cmd *cmd;
2169         struct hci_request req;
2170         u8 scan;
2171         int err;
2172
2173         BT_DBG("request for %s", hdev->name);
2174
2175         if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
2176             !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
2177                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE,
2178                                        MGMT_STATUS_REJECTED);
2179
2180         if (cp->val != 0x00 && cp->val != 0x01)
2181                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE,
2182                                        MGMT_STATUS_INVALID_PARAMS);
2183
2184         hci_dev_lock(hdev);
2185
2186         if (!hdev_is_powered(hdev)) {
2187                 err = set_connectable_update_settings(hdev, sk, cp->val);
2188                 goto failed;
2189         }
2190
2191         if (pending_find(MGMT_OP_SET_DISCOVERABLE, hdev) ||
2192             pending_find(MGMT_OP_SET_CONNECTABLE, hdev)) {
2193                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE,
2194                                       MGMT_STATUS_BUSY);
2195                 goto failed;
2196         }
2197
2198         cmd = mgmt_pending_add(sk, MGMT_OP_SET_CONNECTABLE, hdev, data, len);
2199         if (!cmd) {
2200                 err = -ENOMEM;
2201                 goto failed;
2202         }
2203
2204         hci_req_init(&req, hdev);
2205
2206         /* If BR/EDR is not enabled and we disable advertising as a
2207          * by-product of disabling connectable, we need to update the
2208          * advertising flags.
2209          */
2210         if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
2211                 if (!cp->val) {
2212                         hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
2213                         hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
2214                 }
2215                 update_adv_data(&req);
2216         } else if (cp->val != test_bit(HCI_PSCAN, &hdev->flags)) {
2217                 if (cp->val) {
2218                         scan = SCAN_PAGE;
2219                 } else {
2220                         /* If we don't have any whitelist entries just
2221                          * disable all scanning. If there are entries
2222                          * and we had both page and inquiry scanning
2223                          * enabled then fall back to only page scanning.
2224                          * Otherwise no changes are needed.
2225                          */
2226                         if (list_empty(&hdev->whitelist))
2227                                 scan = SCAN_DISABLED;
2228                         else if (test_bit(HCI_ISCAN, &hdev->flags))
2229                                 scan = SCAN_PAGE;
2230                         else
2231                                 goto no_scan_update;
2232
2233                         if (test_bit(HCI_ISCAN, &hdev->flags) &&
2234                             hdev->discov_timeout > 0)
2235                                 cancel_delayed_work(&hdev->discov_off);
2236                 }
2237
2238                 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
2239         }
2240
2241 no_scan_update:
2242         /* Update the advertising parameters if necessary */
2243         if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
2244             hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))
2245                 enable_advertising(&req);
2246
2247         err = hci_req_run(&req, set_connectable_complete);
2248         if (err < 0) {
2249                 mgmt_pending_remove(cmd);
2250                 if (err == -ENODATA)
2251                         err = set_connectable_update_settings(hdev, sk,
2252                                                               cp->val);
2253                 goto failed;
2254         }
2255
2256 failed:
2257         hci_dev_unlock(hdev);
2258         return err;
2259 }
2260
2261 static int set_bondable(struct sock *sk, struct hci_dev *hdev, void *data,
2262                         u16 len)
2263 {
2264         struct mgmt_mode *cp = data;
2265         bool changed;
2266         int err;
2267
2268         BT_DBG("request for %s", hdev->name);
2269
2270         if (cp->val != 0x00 && cp->val != 0x01)
2271                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BONDABLE,
2272                                        MGMT_STATUS_INVALID_PARAMS);
2273
2274         hci_dev_lock(hdev);
2275
2276         if (cp->val)
2277                 changed = !hci_dev_test_and_set_flag(hdev, HCI_BONDABLE);
2278         else
2279                 changed = hci_dev_test_and_clear_flag(hdev, HCI_BONDABLE);
2280
2281         err = send_settings_rsp(sk, MGMT_OP_SET_BONDABLE, hdev);
2282         if (err < 0)
2283                 goto unlock;
2284
2285         if (changed)
2286                 err = new_settings(hdev, sk);
2287
2288 unlock:
2289         hci_dev_unlock(hdev);
2290         return err;
2291 }
2292
2293 static int set_link_security(struct sock *sk, struct hci_dev *hdev, void *data,
2294                              u16 len)
2295 {
2296         struct mgmt_mode *cp = data;
2297         struct mgmt_pending_cmd *cmd;
2298         u8 val, status;
2299         int err;
2300
2301         BT_DBG("request for %s", hdev->name);
2302
2303         status = mgmt_bredr_support(hdev);
2304         if (status)
2305                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY,
2306                                        status);
2307
2308         if (cp->val != 0x00 && cp->val != 0x01)
2309                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY,
2310                                        MGMT_STATUS_INVALID_PARAMS);
2311
2312         hci_dev_lock(hdev);
2313
2314         if (!hdev_is_powered(hdev)) {
2315                 bool changed = false;
2316
2317                 if (!!cp->val != hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) {
2318                         hci_dev_change_flag(hdev, HCI_LINK_SECURITY);
2319                         changed = true;
2320                 }
2321
2322                 err = send_settings_rsp(sk, MGMT_OP_SET_LINK_SECURITY, hdev);
2323                 if (err < 0)
2324                         goto failed;
2325
2326                 if (changed)
2327                         err = new_settings(hdev, sk);
2328
2329                 goto failed;
2330         }
2331
2332         if (pending_find(MGMT_OP_SET_LINK_SECURITY, hdev)) {
2333                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY,
2334                                       MGMT_STATUS_BUSY);
2335                 goto failed;
2336         }
2337
2338         val = !!cp->val;
2339
2340         if (test_bit(HCI_AUTH, &hdev->flags) == val) {
2341                 err = send_settings_rsp(sk, MGMT_OP_SET_LINK_SECURITY, hdev);
2342                 goto failed;
2343         }
2344
2345         cmd = mgmt_pending_add(sk, MGMT_OP_SET_LINK_SECURITY, hdev, data, len);
2346         if (!cmd) {
2347                 err = -ENOMEM;
2348                 goto failed;
2349         }
2350
2351         err = hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, sizeof(val), &val);
2352         if (err < 0) {
2353                 mgmt_pending_remove(cmd);
2354                 goto failed;
2355         }
2356
2357 failed:
2358         hci_dev_unlock(hdev);
2359         return err;
2360 }
2361
2362 static int set_ssp(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2363 {
2364         struct mgmt_mode *cp = data;
2365         struct mgmt_pending_cmd *cmd;
2366         u8 status;
2367         int err;
2368
2369         BT_DBG("request for %s", hdev->name);
2370
2371         status = mgmt_bredr_support(hdev);
2372         if (status)
2373                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP, status);
2374
2375         if (!lmp_ssp_capable(hdev))
2376                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
2377                                        MGMT_STATUS_NOT_SUPPORTED);
2378
2379         if (cp->val != 0x00 && cp->val != 0x01)
2380                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
2381                                        MGMT_STATUS_INVALID_PARAMS);
2382
2383         hci_dev_lock(hdev);
2384
2385         if (!hdev_is_powered(hdev)) {
2386                 bool changed;
2387
2388                 if (cp->val) {
2389                         changed = !hci_dev_test_and_set_flag(hdev,
2390                                                              HCI_SSP_ENABLED);
2391                 } else {
2392                         changed = hci_dev_test_and_clear_flag(hdev,
2393                                                               HCI_SSP_ENABLED);
2394                         if (!changed)
2395                                 changed = hci_dev_test_and_clear_flag(hdev,
2396                                                                       HCI_HS_ENABLED);
2397                         else
2398                                 hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
2399                 }
2400
2401                 err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev);
2402                 if (err < 0)
2403                         goto failed;
2404
2405                 if (changed)
2406                         err = new_settings(hdev, sk);
2407
2408                 goto failed;
2409         }
2410
2411         if (pending_find(MGMT_OP_SET_SSP, hdev)) {
2412                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
2413                                       MGMT_STATUS_BUSY);
2414                 goto failed;
2415         }
2416
2417         if (!!cp->val == hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
2418                 err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev);
2419                 goto failed;
2420         }
2421
2422         cmd = mgmt_pending_add(sk, MGMT_OP_SET_SSP, hdev, data, len);
2423         if (!cmd) {
2424                 err = -ENOMEM;
2425                 goto failed;
2426         }
2427
2428         if (!cp->val && hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS))
2429                 hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
2430                              sizeof(cp->val), &cp->val);
2431
2432         err = hci_send_cmd(hdev, HCI_OP_WRITE_SSP_MODE, 1, &cp->val);
2433         if (err < 0) {
2434                 mgmt_pending_remove(cmd);
2435                 goto failed;
2436         }
2437
2438 failed:
2439         hci_dev_unlock(hdev);
2440         return err;
2441 }
2442
2443 static int set_hs(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2444 {
2445         struct mgmt_mode *cp = data;
2446         bool changed;
2447         u8 status;
2448         int err;
2449
2450         BT_DBG("request for %s", hdev->name);
2451
2452         status = mgmt_bredr_support(hdev);
2453         if (status)
2454                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, status);
2455
2456         if (!lmp_ssp_capable(hdev))
2457                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2458                                        MGMT_STATUS_NOT_SUPPORTED);
2459
2460         if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
2461                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2462                                        MGMT_STATUS_REJECTED);
2463
2464         if (cp->val != 0x00 && cp->val != 0x01)
2465                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2466                                        MGMT_STATUS_INVALID_PARAMS);
2467
2468         hci_dev_lock(hdev);
2469
2470         if (pending_find(MGMT_OP_SET_SSP, hdev)) {
2471                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2472                                       MGMT_STATUS_BUSY);
2473                 goto unlock;
2474         }
2475
2476         if (cp->val) {
2477                 changed = !hci_dev_test_and_set_flag(hdev, HCI_HS_ENABLED);
2478         } else {
2479                 if (hdev_is_powered(hdev)) {
2480                         err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
2481                                               MGMT_STATUS_REJECTED);
2482                         goto unlock;
2483                 }
2484
2485                 changed = hci_dev_test_and_clear_flag(hdev, HCI_HS_ENABLED);
2486         }
2487
2488         err = send_settings_rsp(sk, MGMT_OP_SET_HS, hdev);
2489         if (err < 0)
2490                 goto unlock;
2491
2492         if (changed)
2493                 err = new_settings(hdev, sk);
2494
2495 unlock:
2496         hci_dev_unlock(hdev);
2497         return err;
2498 }
2499
2500 static void le_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2501 {
2502         struct cmd_lookup match = { NULL, hdev };
2503
2504         hci_dev_lock(hdev);
2505
2506         if (status) {
2507                 u8 mgmt_err = mgmt_status(status);
2508
2509                 mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, cmd_status_rsp,
2510                                      &mgmt_err);
2511                 goto unlock;
2512         }
2513
2514         mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, settings_rsp, &match);
2515
2516         new_settings(hdev, match.sk);
2517
2518         if (match.sk)
2519                 sock_put(match.sk);
2520
2521         /* Make sure the controller has a good default for
2522          * advertising data. Restrict the update to when LE
2523          * has actually been enabled. During power on, the
2524          * update in powered_update_hci will take care of it.
2525          */
2526         if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) {
2527                 struct hci_request req;
2528
2529                 hci_req_init(&req, hdev);
2530                 update_adv_data(&req);
2531                 update_scan_rsp_data(&req);
2532                 __hci_update_background_scan(&req);
2533                 hci_req_run(&req, NULL);
2534         }
2535
2536 unlock:
2537         hci_dev_unlock(hdev);
2538 }
2539
2540 static int set_le(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2541 {
2542         struct mgmt_mode *cp = data;
2543         struct hci_cp_write_le_host_supported hci_cp;
2544         struct mgmt_pending_cmd *cmd;
2545         struct hci_request req;
2546         int err;
2547         u8 val, enabled;
2548
2549         BT_DBG("request for %s", hdev->name);
2550
2551         if (!lmp_le_capable(hdev))
2552                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2553                                        MGMT_STATUS_NOT_SUPPORTED);
2554
2555         if (cp->val != 0x00 && cp->val != 0x01)
2556                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2557                                        MGMT_STATUS_INVALID_PARAMS);
2558
2559         /* Bluetooth single mode LE only controllers or dual-mode
2560          * controllers configured as LE only devices, do not allow
2561          * switching LE off. These have either LE enabled explicitly
2562          * or BR/EDR has been previously switched off.
2563          *
2564          * When trying to enable an already enabled LE, then gracefully
2565          * send a positive response. Trying to disable it however will
2566          * result into rejection.
2567          */
2568         if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
2569                 if (cp->val == 0x01)
2570                         return send_settings_rsp(sk, MGMT_OP_SET_LE, hdev);
2571
2572                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2573                                        MGMT_STATUS_REJECTED);
2574         }
2575
2576         hci_dev_lock(hdev);
2577
2578         val = !!cp->val;
2579         enabled = lmp_host_le_capable(hdev);
2580
2581         if (!val)
2582                 clear_adv_instance(hdev, NULL, 0x00, true);
2583
2584         if (!hdev_is_powered(hdev) || val == enabled) {
2585                 bool changed = false;
2586
2587                 if (val != hci_dev_test_flag(hdev, HCI_LE_ENABLED)) {
2588                         hci_dev_change_flag(hdev, HCI_LE_ENABLED);
2589                         changed = true;
2590                 }
2591
2592                 if (!val && hci_dev_test_flag(hdev, HCI_ADVERTISING)) {
2593                         hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2594                         changed = true;
2595                 }
2596
2597                 err = send_settings_rsp(sk, MGMT_OP_SET_LE, hdev);
2598                 if (err < 0)
2599                         goto unlock;
2600
2601                 if (changed)
2602                         err = new_settings(hdev, sk);
2603
2604                 goto unlock;
2605         }
2606
2607         if (pending_find(MGMT_OP_SET_LE, hdev) ||
2608             pending_find(MGMT_OP_SET_ADVERTISING, hdev)) {
2609                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
2610                                       MGMT_STATUS_BUSY);
2611                 goto unlock;
2612         }
2613
2614         cmd = mgmt_pending_add(sk, MGMT_OP_SET_LE, hdev, data, len);
2615         if (!cmd) {
2616                 err = -ENOMEM;
2617                 goto unlock;
2618         }
2619
2620         hci_req_init(&req, hdev);
2621
2622         memset(&hci_cp, 0, sizeof(hci_cp));
2623
2624         if (val) {
2625                 hci_cp.le = val;
2626                 hci_cp.simul = 0x00;
2627         } else {
2628                 if (hci_dev_test_flag(hdev, HCI_LE_ADV))
2629                         disable_advertising(&req);
2630         }
2631
2632         hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(hci_cp),
2633                     &hci_cp);
2634
2635         err = hci_req_run(&req, le_enable_complete);
2636         if (err < 0)
2637                 mgmt_pending_remove(cmd);
2638
2639 unlock:
2640         hci_dev_unlock(hdev);
2641         return err;
2642 }
2643
2644 /* This is a helper function to test for pending mgmt commands that can
2645  * cause CoD or EIR HCI commands. We can only allow one such pending
2646  * mgmt command at a time since otherwise we cannot easily track what
2647  * the current values are, will be, and based on that calculate if a new
2648  * HCI command needs to be sent and if yes with what value.
2649  */
2650 static bool pending_eir_or_class(struct hci_dev *hdev)
2651 {
2652         struct mgmt_pending_cmd *cmd;
2653
2654         list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
2655                 switch (cmd->opcode) {
2656                 case MGMT_OP_ADD_UUID:
2657                 case MGMT_OP_REMOVE_UUID:
2658                 case MGMT_OP_SET_DEV_CLASS:
2659                 case MGMT_OP_SET_POWERED:
2660                         return true;
2661                 }
2662         }
2663
2664         return false;
2665 }
2666
2667 static const u8 bluetooth_base_uuid[] = {
2668                         0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80,
2669                         0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
2670 };
2671
2672 static u8 get_uuid_size(const u8 *uuid)
2673 {
2674         u32 val;
2675
2676         if (memcmp(uuid, bluetooth_base_uuid, 12))
2677                 return 128;
2678
2679         val = get_unaligned_le32(&uuid[12]);
2680         if (val > 0xffff)
2681                 return 32;
2682
2683         return 16;
2684 }
2685
2686 static void mgmt_class_complete(struct hci_dev *hdev, u16 mgmt_op, u8 status)
2687 {
2688         struct mgmt_pending_cmd *cmd;
2689
2690         hci_dev_lock(hdev);
2691
2692         cmd = pending_find(mgmt_op, hdev);
2693         if (!cmd)
2694                 goto unlock;
2695
2696         mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode,
2697                           mgmt_status(status), hdev->dev_class, 3);
2698
2699         mgmt_pending_remove(cmd);
2700
2701 unlock:
2702         hci_dev_unlock(hdev);
2703 }
2704
2705 static void add_uuid_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2706 {
2707         BT_DBG("status 0x%02x", status);
2708
2709         mgmt_class_complete(hdev, MGMT_OP_ADD_UUID, status);
2710 }
2711
2712 static int add_uuid(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
2713 {
2714         struct mgmt_cp_add_uuid *cp = data;
2715         struct mgmt_pending_cmd *cmd;
2716         struct hci_request req;
2717         struct bt_uuid *uuid;
2718         int err;
2719
2720         BT_DBG("request for %s", hdev->name);
2721
2722         hci_dev_lock(hdev);
2723
2724         if (pending_eir_or_class(hdev)) {
2725                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_UUID,
2726                                       MGMT_STATUS_BUSY);
2727                 goto failed;
2728         }
2729
2730         uuid = kmalloc(sizeof(*uuid), GFP_KERNEL);
2731         if (!uuid) {
2732                 err = -ENOMEM;
2733                 goto failed;
2734         }
2735
2736         memcpy(uuid->uuid, cp->uuid, 16);
2737         uuid->svc_hint = cp->svc_hint;
2738         uuid->size = get_uuid_size(cp->uuid);
2739
2740         list_add_tail(&uuid->list, &hdev->uuids);
2741
2742         hci_req_init(&req, hdev);
2743
2744         update_class(&req);
2745         update_eir(&req);
2746
2747         err = hci_req_run(&req, add_uuid_complete);
2748         if (err < 0) {
2749                 if (err != -ENODATA)
2750                         goto failed;
2751
2752                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_UUID, 0,
2753                                         hdev->dev_class, 3);
2754                 goto failed;
2755         }
2756
2757         cmd = mgmt_pending_add(sk, MGMT_OP_ADD_UUID, hdev, data, len);
2758         if (!cmd) {
2759                 err = -ENOMEM;
2760                 goto failed;
2761         }
2762
2763         err = 0;
2764
2765 failed:
2766         hci_dev_unlock(hdev);
2767         return err;
2768 }
2769
2770 static bool enable_service_cache(struct hci_dev *hdev)
2771 {
2772         if (!hdev_is_powered(hdev))
2773                 return false;
2774
2775         if (!hci_dev_test_and_set_flag(hdev, HCI_SERVICE_CACHE)) {
2776                 queue_delayed_work(hdev->workqueue, &hdev->service_cache,
2777                                    CACHE_TIMEOUT);
2778                 return true;
2779         }
2780
2781         return false;
2782 }
2783
2784 static void remove_uuid_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2785 {
2786         BT_DBG("status 0x%02x", status);
2787
2788         mgmt_class_complete(hdev, MGMT_OP_REMOVE_UUID, status);
2789 }
2790
2791 static int remove_uuid(struct sock *sk, struct hci_dev *hdev, void *data,
2792                        u16 len)
2793 {
2794         struct mgmt_cp_remove_uuid *cp = data;
2795         struct mgmt_pending_cmd *cmd;
2796         struct bt_uuid *match, *tmp;
2797         u8 bt_uuid_any[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
2798         struct hci_request req;
2799         int err, found;
2800
2801         BT_DBG("request for %s", hdev->name);
2802
2803         hci_dev_lock(hdev);
2804
2805         if (pending_eir_or_class(hdev)) {
2806                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_UUID,
2807                                       MGMT_STATUS_BUSY);
2808                 goto unlock;
2809         }
2810
2811         if (memcmp(cp->uuid, bt_uuid_any, 16) == 0) {
2812                 hci_uuids_clear(hdev);
2813
2814                 if (enable_service_cache(hdev)) {
2815                         err = mgmt_cmd_complete(sk, hdev->id,
2816                                                 MGMT_OP_REMOVE_UUID,
2817                                                 0, hdev->dev_class, 3);
2818                         goto unlock;
2819                 }
2820
2821                 goto update_class;
2822         }
2823
2824         found = 0;
2825
2826         list_for_each_entry_safe(match, tmp, &hdev->uuids, list) {
2827                 if (memcmp(match->uuid, cp->uuid, 16) != 0)
2828                         continue;
2829
2830                 list_del(&match->list);
2831                 kfree(match);
2832                 found++;
2833         }
2834
2835         if (found == 0) {
2836                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_UUID,
2837                                       MGMT_STATUS_INVALID_PARAMS);
2838                 goto unlock;
2839         }
2840
2841 update_class:
2842         hci_req_init(&req, hdev);
2843
2844         update_class(&req);
2845         update_eir(&req);
2846
2847         err = hci_req_run(&req, remove_uuid_complete);
2848         if (err < 0) {
2849                 if (err != -ENODATA)
2850                         goto unlock;
2851
2852                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_UUID, 0,
2853                                         hdev->dev_class, 3);
2854                 goto unlock;
2855         }
2856
2857         cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_UUID, hdev, data, len);
2858         if (!cmd) {
2859                 err = -ENOMEM;
2860                 goto unlock;
2861         }
2862
2863         err = 0;
2864
2865 unlock:
2866         hci_dev_unlock(hdev);
2867         return err;
2868 }
2869
2870 static void set_class_complete(struct hci_dev *hdev, u8 status, u16 opcode)
2871 {
2872         BT_DBG("status 0x%02x", status);
2873
2874         mgmt_class_complete(hdev, MGMT_OP_SET_DEV_CLASS, status);
2875 }
2876
2877 static int set_dev_class(struct sock *sk, struct hci_dev *hdev, void *data,
2878                          u16 len)
2879 {
2880         struct mgmt_cp_set_dev_class *cp = data;
2881         struct mgmt_pending_cmd *cmd;
2882         struct hci_request req;
2883         int err;
2884
2885         BT_DBG("request for %s", hdev->name);
2886
2887         if (!lmp_bredr_capable(hdev))
2888                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
2889                                        MGMT_STATUS_NOT_SUPPORTED);
2890
2891         hci_dev_lock(hdev);
2892
2893         if (pending_eir_or_class(hdev)) {
2894                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
2895                                       MGMT_STATUS_BUSY);
2896                 goto unlock;
2897         }
2898
2899         if ((cp->minor & 0x03) != 0 || (cp->major & 0xe0) != 0) {
2900                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
2901                                       MGMT_STATUS_INVALID_PARAMS);
2902                 goto unlock;
2903         }
2904
2905         hdev->major_class = cp->major;
2906         hdev->minor_class = cp->minor;
2907
2908         if (!hdev_is_powered(hdev)) {
2909                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0,
2910                                         hdev->dev_class, 3);
2911                 goto unlock;
2912         }
2913
2914         hci_req_init(&req, hdev);
2915
2916         if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) {
2917                 hci_dev_unlock(hdev);
2918                 cancel_delayed_work_sync(&hdev->service_cache);
2919                 hci_dev_lock(hdev);
2920                 update_eir(&req);
2921         }
2922
2923         update_class(&req);
2924
2925         err = hci_req_run(&req, set_class_complete);
2926         if (err < 0) {
2927                 if (err != -ENODATA)
2928                         goto unlock;
2929
2930                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0,
2931                                         hdev->dev_class, 3);
2932                 goto unlock;
2933         }
2934
2935         cmd = mgmt_pending_add(sk, MGMT_OP_SET_DEV_CLASS, hdev, data, len);
2936         if (!cmd) {
2937                 err = -ENOMEM;
2938                 goto unlock;
2939         }
2940
2941         err = 0;
2942
2943 unlock:
2944         hci_dev_unlock(hdev);
2945         return err;
2946 }
2947
2948 static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
2949                           u16 len)
2950 {
2951         struct mgmt_cp_load_link_keys *cp = data;
2952         const u16 max_key_count = ((U16_MAX - sizeof(*cp)) /
2953                                    sizeof(struct mgmt_link_key_info));
2954         u16 key_count, expected_len;
2955         bool changed;
2956         int i;
2957
2958         BT_DBG("request for %s", hdev->name);
2959
2960         if (!lmp_bredr_capable(hdev))
2961                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2962                                        MGMT_STATUS_NOT_SUPPORTED);
2963
2964         key_count = __le16_to_cpu(cp->key_count);
2965         if (key_count > max_key_count) {
2966                 BT_ERR("load_link_keys: too big key_count value %u",
2967                        key_count);
2968                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2969                                        MGMT_STATUS_INVALID_PARAMS);
2970         }
2971
2972         expected_len = sizeof(*cp) + key_count *
2973                                         sizeof(struct mgmt_link_key_info);
2974         if (expected_len != len) {
2975                 BT_ERR("load_link_keys: expected %u bytes, got %u bytes",
2976                        expected_len, len);
2977                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2978                                        MGMT_STATUS_INVALID_PARAMS);
2979         }
2980
2981         if (cp->debug_keys != 0x00 && cp->debug_keys != 0x01)
2982                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
2983                                        MGMT_STATUS_INVALID_PARAMS);
2984
2985         BT_DBG("%s debug_keys %u key_count %u", hdev->name, cp->debug_keys,
2986                key_count);
2987
2988         for (i = 0; i < key_count; i++) {
2989                 struct mgmt_link_key_info *key = &cp->keys[i];
2990
2991                 if (key->addr.type != BDADDR_BREDR || key->type > 0x08)
2992                         return mgmt_cmd_status(sk, hdev->id,
2993                                                MGMT_OP_LOAD_LINK_KEYS,
2994                                                MGMT_STATUS_INVALID_PARAMS);
2995         }
2996
2997         hci_dev_lock(hdev);
2998
2999         hci_link_keys_clear(hdev);
3000
3001         if (cp->debug_keys)
3002                 changed = !hci_dev_test_and_set_flag(hdev, HCI_KEEP_DEBUG_KEYS);
3003         else
3004                 changed = hci_dev_test_and_clear_flag(hdev,
3005                                                       HCI_KEEP_DEBUG_KEYS);
3006
3007         if (changed)
3008                 new_settings(hdev, NULL);
3009
3010         for (i = 0; i < key_count; i++) {
3011                 struct mgmt_link_key_info *key = &cp->keys[i];
3012
3013                 /* Always ignore debug keys and require a new pairing if
3014                  * the user wants to use them.
3015                  */
3016                 if (key->type == HCI_LK_DEBUG_COMBINATION)
3017                         continue;
3018
3019                 hci_add_link_key(hdev, NULL, &key->addr.bdaddr, key->val,
3020                                  key->type, key->pin_len, NULL);
3021         }
3022
3023         mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, 0, NULL, 0);
3024
3025         hci_dev_unlock(hdev);
3026
3027         return 0;
3028 }
3029
3030 static int device_unpaired(struct hci_dev *hdev, bdaddr_t *bdaddr,
3031                            u8 addr_type, struct sock *skip_sk)
3032 {
3033         struct mgmt_ev_device_unpaired ev;
3034
3035         bacpy(&ev.addr.bdaddr, bdaddr);
3036         ev.addr.type = addr_type;
3037
3038         return mgmt_event(MGMT_EV_DEVICE_UNPAIRED, hdev, &ev, sizeof(ev),
3039                           skip_sk);
3040 }
3041
3042 static int unpair_device(struct sock *sk, struct hci_dev *hdev, void *data,
3043                          u16 len)
3044 {
3045         struct mgmt_cp_unpair_device *cp = data;
3046         struct mgmt_rp_unpair_device rp;
3047         struct hci_cp_disconnect dc;
3048         struct mgmt_pending_cmd *cmd;
3049         struct hci_conn *conn;
3050         int err;
3051
3052         memset(&rp, 0, sizeof(rp));
3053         bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
3054         rp.addr.type = cp->addr.type;
3055
3056         if (!bdaddr_type_is_valid(cp->addr.type))
3057                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
3058                                          MGMT_STATUS_INVALID_PARAMS,
3059                                          &rp, sizeof(rp));
3060
3061         if (cp->disconnect != 0x00 && cp->disconnect != 0x01)
3062                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
3063                                          MGMT_STATUS_INVALID_PARAMS,
3064                                          &rp, sizeof(rp));
3065
3066         hci_dev_lock(hdev);
3067
3068         if (!hdev_is_powered(hdev)) {
3069                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
3070                                         MGMT_STATUS_NOT_POWERED, &rp,
3071                                         sizeof(rp));
3072                 goto unlock;
3073         }
3074
3075         if (cp->addr.type == BDADDR_BREDR) {
3076                 /* If disconnection is requested, then look up the
3077                  * connection. If the remote device is connected, it
3078                  * will be later used to terminate the link.
3079                  *
3080                  * Setting it to NULL explicitly will cause no
3081                  * termination of the link.
3082                  */
3083                 if (cp->disconnect)
3084                         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
3085                                                        &cp->addr.bdaddr);
3086                 else
3087                         conn = NULL;
3088
3089                 err = hci_remove_link_key(hdev, &cp->addr.bdaddr);
3090         } else {
3091                 u8 addr_type;
3092
3093                 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK,
3094                                                &cp->addr.bdaddr);
3095                 if (conn) {
3096                         /* Defer clearing up the connection parameters
3097                          * until closing to give a chance of keeping
3098                          * them if a repairing happens.
3099                          */
3100                         set_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags);
3101
3102                         /* If disconnection is not requested, then
3103                          * clear the connection variable so that the
3104                          * link is not terminated.
3105                          */
3106                         if (!cp->disconnect)
3107                                 conn = NULL;
3108                 }
3109
3110                 if (cp->addr.type == BDADDR_LE_PUBLIC)
3111                         addr_type = ADDR_LE_DEV_PUBLIC;
3112                 else
3113                         addr_type = ADDR_LE_DEV_RANDOM;
3114
3115                 hci_remove_irk(hdev, &cp->addr.bdaddr, addr_type);
3116
3117                 err = hci_remove_ltk(hdev, &cp->addr.bdaddr, addr_type);
3118         }
3119
3120         if (err < 0) {
3121                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
3122                                         MGMT_STATUS_NOT_PAIRED, &rp,
3123                                         sizeof(rp));
3124                 goto unlock;
3125         }
3126
3127         /* If the connection variable is set, then termination of the
3128          * link is requested.
3129          */
3130         if (!conn) {
3131                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, 0,
3132                                         &rp, sizeof(rp));
3133                 device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, sk);
3134                 goto unlock;
3135         }
3136
3137         cmd = mgmt_pending_add(sk, MGMT_OP_UNPAIR_DEVICE, hdev, cp,
3138                                sizeof(*cp));
3139         if (!cmd) {
3140                 err = -ENOMEM;
3141                 goto unlock;
3142         }
3143
3144         cmd->cmd_complete = addr_cmd_complete;
3145
3146         dc.handle = cpu_to_le16(conn->handle);
3147         dc.reason = 0x13; /* Remote User Terminated Connection */
3148         err = hci_send_cmd(hdev, HCI_OP_DISCONNECT, sizeof(dc), &dc);
3149         if (err < 0)
3150                 mgmt_pending_remove(cmd);
3151
3152 unlock:
3153         hci_dev_unlock(hdev);
3154         return err;
3155 }
3156
3157 static int disconnect(struct sock *sk, struct hci_dev *hdev, void *data,
3158                       u16 len)
3159 {
3160         struct mgmt_cp_disconnect *cp = data;
3161         struct mgmt_rp_disconnect rp;
3162         struct mgmt_pending_cmd *cmd;
3163         struct hci_conn *conn;
3164         int err;
3165
3166         BT_DBG("");
3167
3168         memset(&rp, 0, sizeof(rp));
3169         bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
3170         rp.addr.type = cp->addr.type;
3171
3172         if (!bdaddr_type_is_valid(cp->addr.type))
3173                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
3174                                          MGMT_STATUS_INVALID_PARAMS,
3175                                          &rp, sizeof(rp));
3176
3177         hci_dev_lock(hdev);
3178
3179         if (!test_bit(HCI_UP, &hdev->flags)) {
3180                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
3181                                         MGMT_STATUS_NOT_POWERED, &rp,
3182                                         sizeof(rp));
3183                 goto failed;
3184         }
3185
3186         if (pending_find(MGMT_OP_DISCONNECT, hdev)) {
3187                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
3188                                         MGMT_STATUS_BUSY, &rp, sizeof(rp));
3189                 goto failed;
3190         }
3191
3192         if (cp->addr.type == BDADDR_BREDR)
3193                 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
3194                                                &cp->addr.bdaddr);
3195         else
3196                 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr);
3197
3198         if (!conn || conn->state == BT_OPEN || conn->state == BT_CLOSED) {
3199                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT,
3200                                         MGMT_STATUS_NOT_CONNECTED, &rp,
3201                                         sizeof(rp));
3202                 goto failed;
3203         }
3204
3205         cmd = mgmt_pending_add(sk, MGMT_OP_DISCONNECT, hdev, data, len);
3206         if (!cmd) {
3207                 err = -ENOMEM;
3208                 goto failed;
3209         }
3210
3211         cmd->cmd_complete = generic_cmd_complete;
3212
3213         err = hci_disconnect(conn, HCI_ERROR_REMOTE_USER_TERM);
3214         if (err < 0)
3215                 mgmt_pending_remove(cmd);
3216
3217 failed:
3218         hci_dev_unlock(hdev);
3219         return err;
3220 }
3221
3222 static u8 link_to_bdaddr(u8 link_type, u8 addr_type)
3223 {
3224         switch (link_type) {
3225         case LE_LINK:
3226                 switch (addr_type) {
3227                 case ADDR_LE_DEV_PUBLIC:
3228                         return BDADDR_LE_PUBLIC;
3229
3230                 default:
3231                         /* Fallback to LE Random address type */
3232                         return BDADDR_LE_RANDOM;
3233                 }
3234
3235         default:
3236                 /* Fallback to BR/EDR type */
3237                 return BDADDR_BREDR;
3238         }
3239 }
3240
3241 static int get_connections(struct sock *sk, struct hci_dev *hdev, void *data,
3242                            u16 data_len)
3243 {
3244         struct mgmt_rp_get_connections *rp;
3245         struct hci_conn *c;
3246         size_t rp_len;
3247         int err;
3248         u16 i;
3249
3250         BT_DBG("");
3251
3252         hci_dev_lock(hdev);
3253
3254         if (!hdev_is_powered(hdev)) {
3255                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_GET_CONNECTIONS,
3256                                       MGMT_STATUS_NOT_POWERED);
3257                 goto unlock;
3258         }
3259
3260         i = 0;
3261         list_for_each_entry(c, &hdev->conn_hash.list, list) {
3262                 if (test_bit(HCI_CONN_MGMT_CONNECTED, &c->flags))
3263                         i++;
3264         }
3265
3266         rp_len = sizeof(*rp) + (i * sizeof(struct mgmt_addr_info));
3267         rp = kmalloc(rp_len, GFP_KERNEL);
3268         if (!rp) {
3269                 err = -ENOMEM;
3270                 goto unlock;
3271         }
3272
3273         i = 0;
3274         list_for_each_entry(c, &hdev->conn_hash.list, list) {
3275                 if (!test_bit(HCI_CONN_MGMT_CONNECTED, &c->flags))
3276                         continue;
3277                 bacpy(&rp->addr[i].bdaddr, &c->dst);
3278                 rp->addr[i].type = link_to_bdaddr(c->type, c->dst_type);
3279                 if (c->type == SCO_LINK || c->type == ESCO_LINK)
3280                         continue;
3281                 i++;
3282         }
3283
3284         rp->conn_count = cpu_to_le16(i);
3285
3286         /* Recalculate length in case of filtered SCO connections, etc */
3287         rp_len = sizeof(*rp) + (i * sizeof(struct mgmt_addr_info));
3288
3289         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONNECTIONS, 0, rp,
3290                                 rp_len);
3291
3292         kfree(rp);
3293
3294 unlock:
3295         hci_dev_unlock(hdev);
3296         return err;
3297 }
3298
3299 static int send_pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev,
3300                                    struct mgmt_cp_pin_code_neg_reply *cp)
3301 {
3302         struct mgmt_pending_cmd *cmd;
3303         int err;
3304
3305         cmd = mgmt_pending_add(sk, MGMT_OP_PIN_CODE_NEG_REPLY, hdev, cp,
3306                                sizeof(*cp));
3307         if (!cmd)
3308                 return -ENOMEM;
3309
3310         err = hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
3311                            sizeof(cp->addr.bdaddr), &cp->addr.bdaddr);
3312         if (err < 0)
3313                 mgmt_pending_remove(cmd);
3314
3315         return err;
3316 }
3317
3318 static int pin_code_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3319                           u16 len)
3320 {
3321         struct hci_conn *conn;
3322         struct mgmt_cp_pin_code_reply *cp = data;
3323         struct hci_cp_pin_code_reply reply;
3324         struct mgmt_pending_cmd *cmd;
3325         int err;
3326
3327         BT_DBG("");
3328
3329         hci_dev_lock(hdev);
3330
3331         if (!hdev_is_powered(hdev)) {
3332                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY,
3333                                       MGMT_STATUS_NOT_POWERED);
3334                 goto failed;
3335         }
3336
3337         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->addr.bdaddr);
3338         if (!conn) {
3339                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY,
3340                                       MGMT_STATUS_NOT_CONNECTED);
3341                 goto failed;
3342         }
3343
3344         if (conn->pending_sec_level == BT_SECURITY_HIGH && cp->pin_len != 16) {
3345                 struct mgmt_cp_pin_code_neg_reply ncp;
3346
3347                 memcpy(&ncp.addr, &cp->addr, sizeof(ncp.addr));
3348
3349                 BT_ERR("PIN code is not 16 bytes long");
3350
3351                 err = send_pin_code_neg_reply(sk, hdev, &ncp);
3352                 if (err >= 0)
3353                         err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY,
3354                                               MGMT_STATUS_INVALID_PARAMS);
3355
3356                 goto failed;
3357         }
3358
3359         cmd = mgmt_pending_add(sk, MGMT_OP_PIN_CODE_REPLY, hdev, data, len);
3360         if (!cmd) {
3361                 err = -ENOMEM;
3362                 goto failed;
3363         }
3364
3365         cmd->cmd_complete = addr_cmd_complete;
3366
3367         bacpy(&reply.bdaddr, &cp->addr.bdaddr);
3368         reply.pin_len = cp->pin_len;
3369         memcpy(reply.pin_code, cp->pin_code, sizeof(reply.pin_code));
3370
3371         err = hci_send_cmd(hdev, HCI_OP_PIN_CODE_REPLY, sizeof(reply), &reply);
3372         if (err < 0)
3373                 mgmt_pending_remove(cmd);
3374
3375 failed:
3376         hci_dev_unlock(hdev);
3377         return err;
3378 }
3379
3380 static int set_io_capability(struct sock *sk, struct hci_dev *hdev, void *data,
3381                              u16 len)
3382 {
3383         struct mgmt_cp_set_io_capability *cp = data;
3384
3385         BT_DBG("");
3386
3387         if (cp->io_capability > SMP_IO_KEYBOARD_DISPLAY)
3388                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_IO_CAPABILITY,
3389                                          MGMT_STATUS_INVALID_PARAMS, NULL, 0);
3390
3391         hci_dev_lock(hdev);
3392
3393         hdev->io_capability = cp->io_capability;
3394
3395         BT_DBG("%s IO capability set to 0x%02x", hdev->name,
3396                hdev->io_capability);
3397
3398         hci_dev_unlock(hdev);
3399
3400         return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_IO_CAPABILITY, 0,
3401                                  NULL, 0);
3402 }
3403
3404 static struct mgmt_pending_cmd *find_pairing(struct hci_conn *conn)
3405 {
3406         struct hci_dev *hdev = conn->hdev;
3407         struct mgmt_pending_cmd *cmd;
3408
3409         list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
3410                 if (cmd->opcode != MGMT_OP_PAIR_DEVICE)
3411                         continue;
3412
3413                 if (cmd->user_data != conn)
3414                         continue;
3415
3416                 return cmd;
3417         }
3418
3419         return NULL;
3420 }
3421
3422 static int pairing_complete(struct mgmt_pending_cmd *cmd, u8 status)
3423 {
3424         struct mgmt_rp_pair_device rp;
3425         struct hci_conn *conn = cmd->user_data;
3426         int err;
3427
3428         bacpy(&rp.addr.bdaddr, &conn->dst);
3429         rp.addr.type = link_to_bdaddr(conn->type, conn->dst_type);
3430
3431         err = mgmt_cmd_complete(cmd->sk, cmd->index, MGMT_OP_PAIR_DEVICE,
3432                                 status, &rp, sizeof(rp));
3433
3434         /* So we don't get further callbacks for this connection */
3435         conn->connect_cfm_cb = NULL;
3436         conn->security_cfm_cb = NULL;
3437         conn->disconn_cfm_cb = NULL;
3438
3439         hci_conn_drop(conn);
3440
3441         /* The device is paired so there is no need to remove
3442          * its connection parameters anymore.
3443          */
3444         clear_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags);
3445
3446         hci_conn_put(conn);
3447
3448         return err;
3449 }
3450
3451 void mgmt_smp_complete(struct hci_conn *conn, bool complete)
3452 {
3453         u8 status = complete ? MGMT_STATUS_SUCCESS : MGMT_STATUS_FAILED;
3454         struct mgmt_pending_cmd *cmd;
3455
3456         cmd = find_pairing(conn);
3457         if (cmd) {
3458                 cmd->cmd_complete(cmd, status);
3459                 mgmt_pending_remove(cmd);
3460         }
3461 }
3462
3463 static void pairing_complete_cb(struct hci_conn *conn, u8 status)
3464 {
3465         struct mgmt_pending_cmd *cmd;
3466
3467         BT_DBG("status %u", status);
3468
3469         cmd = find_pairing(conn);
3470         if (!cmd) {
3471                 BT_DBG("Unable to find a pending command");
3472                 return;
3473         }
3474
3475         cmd->cmd_complete(cmd, mgmt_status(status));
3476         mgmt_pending_remove(cmd);
3477 }
3478
3479 static void le_pairing_complete_cb(struct hci_conn *conn, u8 status)
3480 {
3481         struct mgmt_pending_cmd *cmd;
3482
3483         BT_DBG("status %u", status);
3484
3485         if (!status)
3486                 return;
3487
3488         cmd = find_pairing(conn);
3489         if (!cmd) {
3490                 BT_DBG("Unable to find a pending command");
3491                 return;
3492         }
3493
3494         cmd->cmd_complete(cmd, mgmt_status(status));
3495         mgmt_pending_remove(cmd);
3496 }
3497
3498 static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
3499                        u16 len)
3500 {
3501         struct mgmt_cp_pair_device *cp = data;
3502         struct mgmt_rp_pair_device rp;
3503         struct mgmt_pending_cmd *cmd;
3504         u8 sec_level, auth_type;
3505         struct hci_conn *conn;
3506         int err;
3507
3508         BT_DBG("");
3509
3510         memset(&rp, 0, sizeof(rp));
3511         bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
3512         rp.addr.type = cp->addr.type;
3513
3514         if (!bdaddr_type_is_valid(cp->addr.type))
3515                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3516                                          MGMT_STATUS_INVALID_PARAMS,
3517                                          &rp, sizeof(rp));
3518
3519         if (cp->io_cap > SMP_IO_KEYBOARD_DISPLAY)
3520                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3521                                          MGMT_STATUS_INVALID_PARAMS,
3522                                          &rp, sizeof(rp));
3523
3524         hci_dev_lock(hdev);
3525
3526         if (!hdev_is_powered(hdev)) {
3527                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3528                                         MGMT_STATUS_NOT_POWERED, &rp,
3529                                         sizeof(rp));
3530                 goto unlock;
3531         }
3532
3533         if (hci_bdaddr_is_paired(hdev, &cp->addr.bdaddr, cp->addr.type)) {
3534                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3535                                         MGMT_STATUS_ALREADY_PAIRED, &rp,
3536                                         sizeof(rp));
3537                 goto unlock;
3538         }
3539
3540         sec_level = BT_SECURITY_MEDIUM;
3541         auth_type = HCI_AT_DEDICATED_BONDING;
3542
3543         if (cp->addr.type == BDADDR_BREDR) {
3544                 conn = hci_connect_acl(hdev, &cp->addr.bdaddr, sec_level,
3545                                        auth_type);
3546         } else {
3547                 u8 addr_type;
3548
3549                 /* Convert from L2CAP channel address type to HCI address type
3550                  */
3551                 if (cp->addr.type == BDADDR_LE_PUBLIC)
3552                         addr_type = ADDR_LE_DEV_PUBLIC;
3553                 else
3554                         addr_type = ADDR_LE_DEV_RANDOM;
3555
3556                 /* When pairing a new device, it is expected to remember
3557                  * this device for future connections. Adding the connection
3558                  * parameter information ahead of time allows tracking
3559                  * of the slave preferred values and will speed up any
3560                  * further connection establishment.
3561                  *
3562                  * If connection parameters already exist, then they
3563                  * will be kept and this function does nothing.
3564                  */
3565                 hci_conn_params_add(hdev, &cp->addr.bdaddr, addr_type);
3566
3567                 conn = hci_connect_le(hdev, &cp->addr.bdaddr, addr_type,
3568                                       sec_level, HCI_LE_CONN_TIMEOUT,
3569                                       HCI_ROLE_MASTER);
3570         }
3571
3572         if (IS_ERR(conn)) {
3573                 int status;
3574
3575                 if (PTR_ERR(conn) == -EBUSY)
3576                         status = MGMT_STATUS_BUSY;
3577                 else if (PTR_ERR(conn) == -EOPNOTSUPP)
3578                         status = MGMT_STATUS_NOT_SUPPORTED;
3579                 else if (PTR_ERR(conn) == -ECONNREFUSED)
3580                         status = MGMT_STATUS_REJECTED;
3581                 else
3582                         status = MGMT_STATUS_CONNECT_FAILED;
3583
3584                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3585                                         status, &rp, sizeof(rp));
3586                 goto unlock;
3587         }
3588
3589         if (conn->connect_cfm_cb) {
3590                 hci_conn_drop(conn);
3591                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3592                                         MGMT_STATUS_BUSY, &rp, sizeof(rp));
3593                 goto unlock;
3594         }
3595
3596         cmd = mgmt_pending_add(sk, MGMT_OP_PAIR_DEVICE, hdev, data, len);
3597         if (!cmd) {
3598                 err = -ENOMEM;
3599                 hci_conn_drop(conn);
3600                 goto unlock;
3601         }
3602
3603         cmd->cmd_complete = pairing_complete;
3604
3605         /* For LE, just connecting isn't a proof that the pairing finished */
3606         if (cp->addr.type == BDADDR_BREDR) {
3607                 conn->connect_cfm_cb = pairing_complete_cb;
3608                 conn->security_cfm_cb = pairing_complete_cb;
3609                 conn->disconn_cfm_cb = pairing_complete_cb;
3610         } else {
3611                 conn->connect_cfm_cb = le_pairing_complete_cb;
3612                 conn->security_cfm_cb = le_pairing_complete_cb;
3613                 conn->disconn_cfm_cb = le_pairing_complete_cb;
3614         }
3615
3616         conn->io_capability = cp->io_cap;
3617         cmd->user_data = hci_conn_get(conn);
3618
3619         if ((conn->state == BT_CONNECTED || conn->state == BT_CONFIG) &&
3620             hci_conn_security(conn, sec_level, auth_type, true)) {
3621                 cmd->cmd_complete(cmd, 0);
3622                 mgmt_pending_remove(cmd);
3623         }
3624
3625         err = 0;
3626
3627 unlock:
3628         hci_dev_unlock(hdev);
3629         return err;
3630 }
3631
3632 static int cancel_pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
3633                               u16 len)
3634 {
3635         struct mgmt_addr_info *addr = data;
3636         struct mgmt_pending_cmd *cmd;
3637         struct hci_conn *conn;
3638         int err;
3639
3640         BT_DBG("");
3641
3642         hci_dev_lock(hdev);
3643
3644         if (!hdev_is_powered(hdev)) {
3645                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3646                                       MGMT_STATUS_NOT_POWERED);
3647                 goto unlock;
3648         }
3649
3650         cmd = pending_find(MGMT_OP_PAIR_DEVICE, hdev);
3651         if (!cmd) {
3652                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3653                                       MGMT_STATUS_INVALID_PARAMS);
3654                 goto unlock;
3655         }
3656
3657         conn = cmd->user_data;
3658
3659         if (bacmp(&addr->bdaddr, &conn->dst) != 0) {
3660                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3661                                       MGMT_STATUS_INVALID_PARAMS);
3662                 goto unlock;
3663         }
3664
3665         cmd->cmd_complete(cmd, MGMT_STATUS_CANCELLED);
3666         mgmt_pending_remove(cmd);
3667
3668         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 0,
3669                                 addr, sizeof(*addr));
3670 unlock:
3671         hci_dev_unlock(hdev);
3672         return err;
3673 }
3674
3675 static int user_pairing_resp(struct sock *sk, struct hci_dev *hdev,
3676                              struct mgmt_addr_info *addr, u16 mgmt_op,
3677                              u16 hci_op, __le32 passkey)
3678 {
3679         struct mgmt_pending_cmd *cmd;
3680         struct hci_conn *conn;
3681         int err;
3682
3683         hci_dev_lock(hdev);
3684
3685         if (!hdev_is_powered(hdev)) {
3686                 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3687                                         MGMT_STATUS_NOT_POWERED, addr,
3688                                         sizeof(*addr));
3689                 goto done;
3690         }
3691
3692         if (addr->type == BDADDR_BREDR)
3693                 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &addr->bdaddr);
3694         else
3695                 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &addr->bdaddr);
3696
3697         if (!conn) {
3698                 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3699                                         MGMT_STATUS_NOT_CONNECTED, addr,
3700                                         sizeof(*addr));
3701                 goto done;
3702         }
3703
3704         if (addr->type == BDADDR_LE_PUBLIC || addr->type == BDADDR_LE_RANDOM) {
3705                 err = smp_user_confirm_reply(conn, mgmt_op, passkey);
3706                 if (!err)
3707                         err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3708                                                 MGMT_STATUS_SUCCESS, addr,
3709                                                 sizeof(*addr));
3710                 else
3711                         err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3712                                                 MGMT_STATUS_FAILED, addr,
3713                                                 sizeof(*addr));
3714
3715                 goto done;
3716         }
3717
3718         cmd = mgmt_pending_add(sk, mgmt_op, hdev, addr, sizeof(*addr));
3719         if (!cmd) {
3720                 err = -ENOMEM;
3721                 goto done;
3722         }
3723
3724         cmd->cmd_complete = addr_cmd_complete;
3725
3726         /* Continue with pairing via HCI */
3727         if (hci_op == HCI_OP_USER_PASSKEY_REPLY) {
3728                 struct hci_cp_user_passkey_reply cp;
3729
3730                 bacpy(&cp.bdaddr, &addr->bdaddr);
3731                 cp.passkey = passkey;
3732                 err = hci_send_cmd(hdev, hci_op, sizeof(cp), &cp);
3733         } else
3734                 err = hci_send_cmd(hdev, hci_op, sizeof(addr->bdaddr),
3735                                    &addr->bdaddr);
3736
3737         if (err < 0)
3738                 mgmt_pending_remove(cmd);
3739
3740 done:
3741         hci_dev_unlock(hdev);
3742         return err;
3743 }
3744
3745 static int pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev,
3746                               void *data, u16 len)
3747 {
3748         struct mgmt_cp_pin_code_neg_reply *cp = data;
3749
3750         BT_DBG("");
3751
3752         return user_pairing_resp(sk, hdev, &cp->addr,
3753                                 MGMT_OP_PIN_CODE_NEG_REPLY,
3754                                 HCI_OP_PIN_CODE_NEG_REPLY, 0);
3755 }
3756
3757 static int user_confirm_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3758                               u16 len)
3759 {
3760         struct mgmt_cp_user_confirm_reply *cp = data;
3761
3762         BT_DBG("");
3763
3764         if (len != sizeof(*cp))
3765                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_USER_CONFIRM_REPLY,
3766                                        MGMT_STATUS_INVALID_PARAMS);
3767
3768         return user_pairing_resp(sk, hdev, &cp->addr,
3769                                  MGMT_OP_USER_CONFIRM_REPLY,
3770                                  HCI_OP_USER_CONFIRM_REPLY, 0);
3771 }
3772
3773 static int user_confirm_neg_reply(struct sock *sk, struct hci_dev *hdev,
3774                                   void *data, u16 len)
3775 {
3776         struct mgmt_cp_user_confirm_neg_reply *cp = data;
3777
3778         BT_DBG("");
3779
3780         return user_pairing_resp(sk, hdev, &cp->addr,
3781                                  MGMT_OP_USER_CONFIRM_NEG_REPLY,
3782                                  HCI_OP_USER_CONFIRM_NEG_REPLY, 0);
3783 }
3784
3785 static int user_passkey_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3786                               u16 len)
3787 {
3788         struct mgmt_cp_user_passkey_reply *cp = data;
3789
3790         BT_DBG("");
3791
3792         return user_pairing_resp(sk, hdev, &cp->addr,
3793                                  MGMT_OP_USER_PASSKEY_REPLY,
3794                                  HCI_OP_USER_PASSKEY_REPLY, cp->passkey);
3795 }
3796
3797 static int user_passkey_neg_reply(struct sock *sk, struct hci_dev *hdev,
3798                                   void *data, u16 len)
3799 {
3800         struct mgmt_cp_user_passkey_neg_reply *cp = data;
3801
3802         BT_DBG("");
3803
3804         return user_pairing_resp(sk, hdev, &cp->addr,
3805                                  MGMT_OP_USER_PASSKEY_NEG_REPLY,
3806                                  HCI_OP_USER_PASSKEY_NEG_REPLY, 0);
3807 }
3808
3809 static void update_name(struct hci_request *req)
3810 {
3811         struct hci_dev *hdev = req->hdev;
3812         struct hci_cp_write_local_name cp;
3813
3814         memcpy(cp.name, hdev->dev_name, sizeof(cp.name));
3815
3816         hci_req_add(req, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp);
3817 }
3818
3819 static void set_name_complete(struct hci_dev *hdev, u8 status, u16 opcode)
3820 {
3821         struct mgmt_cp_set_local_name *cp;
3822         struct mgmt_pending_cmd *cmd;
3823
3824         BT_DBG("status 0x%02x", status);
3825
3826         hci_dev_lock(hdev);
3827
3828         cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev);
3829         if (!cmd)
3830                 goto unlock;
3831
3832         cp = cmd->param;
3833
3834         if (status)
3835                 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME,
3836                                 mgmt_status(status));
3837         else
3838                 mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3839                                   cp, sizeof(*cp));
3840
3841         mgmt_pending_remove(cmd);
3842
3843 unlock:
3844         hci_dev_unlock(hdev);
3845 }
3846
3847 static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data,
3848                           u16 len)
3849 {
3850         struct mgmt_cp_set_local_name *cp = data;
3851         struct mgmt_pending_cmd *cmd;
3852         struct hci_request req;
3853         int err;
3854
3855         BT_DBG("");
3856
3857         hci_dev_lock(hdev);
3858
3859         /* If the old values are the same as the new ones just return a
3860          * direct command complete event.
3861          */
3862         if (!memcmp(hdev->dev_name, cp->name, sizeof(hdev->dev_name)) &&
3863             !memcmp(hdev->short_name, cp->short_name,
3864                     sizeof(hdev->short_name))) {
3865                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3866                                         data, len);
3867                 goto failed;
3868         }
3869
3870         memcpy(hdev->short_name, cp->short_name, sizeof(hdev->short_name));
3871
3872         if (!hdev_is_powered(hdev)) {
3873                 memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name));
3874
3875                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3876                                         data, len);
3877                 if (err < 0)
3878                         goto failed;
3879
3880                 err = mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev,
3881                                          data, len, sk);
3882
3883                 goto failed;
3884         }
3885
3886         cmd = mgmt_pending_add(sk, MGMT_OP_SET_LOCAL_NAME, hdev, data, len);
3887         if (!cmd) {
3888                 err = -ENOMEM;
3889                 goto failed;
3890         }
3891
3892         memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name));
3893
3894         hci_req_init(&req, hdev);
3895
3896         if (lmp_bredr_capable(hdev)) {
3897                 update_name(&req);
3898                 update_eir(&req);
3899         }
3900
3901         /* The name is stored in the scan response data and so
3902          * no need to udpate the advertising data here.
3903          */
3904         if (lmp_le_capable(hdev))
3905                 update_scan_rsp_data(&req);
3906
3907         err = hci_req_run(&req, set_name_complete);
3908         if (err < 0)
3909                 mgmt_pending_remove(cmd);
3910
3911 failed:
3912         hci_dev_unlock(hdev);
3913         return err;
3914 }
3915
3916 static void read_local_oob_data_complete(struct hci_dev *hdev, u8 status,
3917                                          u16 opcode, struct sk_buff *skb)
3918 {
3919         struct mgmt_rp_read_local_oob_data mgmt_rp;
3920         size_t rp_size = sizeof(mgmt_rp);
3921         struct mgmt_pending_cmd *cmd;
3922
3923         BT_DBG("%s status %u", hdev->name, status);
3924
3925         cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev);
3926         if (!cmd)
3927                 return;
3928
3929         if (status || !skb) {
3930                 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3931                                 status ? mgmt_status(status) : MGMT_STATUS_FAILED);
3932                 goto remove;
3933         }
3934
3935         memset(&mgmt_rp, 0, sizeof(mgmt_rp));
3936
3937         if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) {
3938                 struct hci_rp_read_local_oob_data *rp = (void *) skb->data;
3939
3940                 if (skb->len < sizeof(*rp)) {
3941                         mgmt_cmd_status(cmd->sk, hdev->id,
3942                                         MGMT_OP_READ_LOCAL_OOB_DATA,
3943                                         MGMT_STATUS_FAILED);
3944                         goto remove;
3945                 }
3946
3947                 memcpy(mgmt_rp.hash192, rp->hash, sizeof(rp->hash));
3948                 memcpy(mgmt_rp.rand192, rp->rand, sizeof(rp->rand));
3949
3950                 rp_size -= sizeof(mgmt_rp.hash256) + sizeof(mgmt_rp.rand256);
3951         } else {
3952                 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;
3953
3954                 if (skb->len < sizeof(*rp)) {
3955                         mgmt_cmd_status(cmd->sk, hdev->id,
3956                                         MGMT_OP_READ_LOCAL_OOB_DATA,
3957                                         MGMT_STATUS_FAILED);
3958                         goto remove;
3959                 }
3960
3961                 memcpy(mgmt_rp.hash192, rp->hash192, sizeof(rp->hash192));
3962                 memcpy(mgmt_rp.rand192, rp->rand192, sizeof(rp->rand192));
3963
3964                 memcpy(mgmt_rp.hash256, rp->hash256, sizeof(rp->hash256));
3965                 memcpy(mgmt_rp.rand256, rp->rand256, sizeof(rp->rand256));
3966         }
3967
3968         mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3969                           MGMT_STATUS_SUCCESS, &mgmt_rp, rp_size);
3970
3971 remove:
3972         mgmt_pending_remove(cmd);
3973 }
3974
3975 static int read_local_oob_data(struct sock *sk, struct hci_dev *hdev,
3976                                void *data, u16 data_len)
3977 {
3978         struct mgmt_pending_cmd *cmd;
3979         struct hci_request req;
3980         int err;
3981
3982         BT_DBG("%s", hdev->name);
3983
3984         hci_dev_lock(hdev);
3985
3986         if (!hdev_is_powered(hdev)) {
3987                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3988                                       MGMT_STATUS_NOT_POWERED);
3989                 goto unlock;
3990         }
3991
3992         if (!lmp_ssp_capable(hdev)) {
3993                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3994                                       MGMT_STATUS_NOT_SUPPORTED);
3995                 goto unlock;
3996         }
3997
3998         if (pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev)) {
3999                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
4000                                       MGMT_STATUS_BUSY);
4001                 goto unlock;
4002         }
4003
4004         cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_DATA, hdev, NULL, 0);
4005         if (!cmd) {
4006                 err = -ENOMEM;
4007                 goto unlock;
4008         }
4009
4010         hci_req_init(&req, hdev);
4011
4012         if (bredr_sc_enabled(hdev))
4013                 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL);
4014         else
4015                 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL);
4016
4017         err = hci_req_run_skb(&req, read_local_oob_data_complete);
4018         if (err < 0)
4019                 mgmt_pending_remove(cmd);
4020
4021 unlock:
4022         hci_dev_unlock(hdev);
4023         return err;
4024 }
4025
4026 static int add_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
4027                                void *data, u16 len)
4028 {
4029         struct mgmt_addr_info *addr = data;
4030         int err;
4031
4032         BT_DBG("%s ", hdev->name);
4033
4034         if (!bdaddr_type_is_valid(addr->type))
4035                 return mgmt_cmd_complete(sk, hdev->id,
4036                                          MGMT_OP_ADD_REMOTE_OOB_DATA,
4037                                          MGMT_STATUS_INVALID_PARAMS,
4038                                          addr, sizeof(*addr));
4039
4040         hci_dev_lock(hdev);
4041
4042         if (len == MGMT_ADD_REMOTE_OOB_DATA_SIZE) {
4043                 struct mgmt_cp_add_remote_oob_data *cp = data;
4044                 u8 status;
4045
4046                 if (cp->addr.type != BDADDR_BREDR) {
4047                         err = mgmt_cmd_complete(sk, hdev->id,
4048                                                 MGMT_OP_ADD_REMOTE_OOB_DATA,
4049                                                 MGMT_STATUS_INVALID_PARAMS,
4050                                                 &cp->addr, sizeof(cp->addr));
4051                         goto unlock;
4052                 }
4053
4054                 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr,
4055                                               cp->addr.type, cp->hash,
4056                                               cp->rand, NULL, NULL);
4057                 if (err < 0)
4058                         status = MGMT_STATUS_FAILED;
4059                 else
4060                         status = MGMT_STATUS_SUCCESS;
4061
4062                 err = mgmt_cmd_complete(sk, hdev->id,
4063                                         MGMT_OP_ADD_REMOTE_OOB_DATA, status,
4064                                         &cp->addr, sizeof(cp->addr));
4065         } else if (len == MGMT_ADD_REMOTE_OOB_EXT_DATA_SIZE) {
4066                 struct mgmt_cp_add_remote_oob_ext_data *cp = data;
4067                 u8 *rand192, *hash192, *rand256, *hash256;
4068                 u8 status;
4069
4070                 if (bdaddr_type_is_le(cp->addr.type)) {
4071                         /* Enforce zero-valued 192-bit parameters as
4072                          * long as legacy SMP OOB isn't implemented.
4073                          */
4074                         if (memcmp(cp->rand192, ZERO_KEY, 16) ||
4075                             memcmp(cp->hash192, ZERO_KEY, 16)) {
4076                                 err = mgmt_cmd_complete(sk, hdev->id,
4077                                                         MGMT_OP_ADD_REMOTE_OOB_DATA,
4078                                                         MGMT_STATUS_INVALID_PARAMS,
4079                                                         addr, sizeof(*addr));
4080                                 goto unlock;
4081                         }
4082
4083                         rand192 = NULL;
4084                         hash192 = NULL;
4085                 } else {
4086                         /* In case one of the P-192 values is set to zero,
4087                          * then just disable OOB data for P-192.
4088                          */
4089                         if (!memcmp(cp->rand192, ZERO_KEY, 16) ||
4090                             !memcmp(cp->hash192, ZERO_KEY, 16)) {
4091                                 rand192 = NULL;
4092                                 hash192 = NULL;
4093                         } else {
4094                                 rand192 = cp->rand192;
4095                                 hash192 = cp->hash192;
4096                         }
4097                 }
4098
4099                 /* In case one of the P-256 values is set to zero, then just
4100                  * disable OOB data for P-256.
4101                  */
4102                 if (!memcmp(cp->rand256, ZERO_KEY, 16) ||
4103                     !memcmp(cp->hash256, ZERO_KEY, 16)) {
4104                         rand256 = NULL;
4105                         hash256 = NULL;
4106                 } else {
4107                         rand256 = cp->rand256;
4108                         hash256 = cp->hash256;
4109                 }
4110
4111                 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr,
4112                                               cp->addr.type, hash192, rand192,
4113                                               hash256, rand256);
4114                 if (err < 0)
4115                         status = MGMT_STATUS_FAILED;
4116                 else
4117                         status = MGMT_STATUS_SUCCESS;
4118
4119                 err = mgmt_cmd_complete(sk, hdev->id,
4120                                         MGMT_OP_ADD_REMOTE_OOB_DATA,
4121                                         status, &cp->addr, sizeof(cp->addr));
4122         } else {
4123                 BT_ERR("add_remote_oob_data: invalid length of %u bytes", len);
4124                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA,
4125                                       MGMT_STATUS_INVALID_PARAMS);
4126         }
4127
4128 unlock:
4129         hci_dev_unlock(hdev);
4130         return err;
4131 }
4132
4133 static int remove_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
4134                                   void *data, u16 len)
4135 {
4136         struct mgmt_cp_remove_remote_oob_data *cp = data;
4137         u8 status;
4138         int err;
4139
4140         BT_DBG("%s", hdev->name);
4141
4142         if (cp->addr.type != BDADDR_BREDR)
4143                 return mgmt_cmd_complete(sk, hdev->id,
4144                                          MGMT_OP_REMOVE_REMOTE_OOB_DATA,
4145                                          MGMT_STATUS_INVALID_PARAMS,
4146                                          &cp->addr, sizeof(cp->addr));
4147
4148         hci_dev_lock(hdev);
4149
4150         if (!bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
4151                 hci_remote_oob_data_clear(hdev);
4152                 status = MGMT_STATUS_SUCCESS;
4153                 goto done;
4154         }
4155
4156         err = hci_remove_remote_oob_data(hdev, &cp->addr.bdaddr, cp->addr.type);
4157         if (err < 0)
4158                 status = MGMT_STATUS_INVALID_PARAMS;
4159         else
4160                 status = MGMT_STATUS_SUCCESS;
4161
4162 done:
4163         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_REMOTE_OOB_DATA,
4164                                 status, &cp->addr, sizeof(cp->addr));
4165
4166         hci_dev_unlock(hdev);
4167         return err;
4168 }
4169
4170 static bool trigger_bredr_inquiry(struct hci_request *req, u8 *status)
4171 {
4172         struct hci_dev *hdev = req->hdev;
4173         struct hci_cp_inquiry cp;
4174         /* General inquiry access code (GIAC) */
4175         u8 lap[3] = { 0x33, 0x8b, 0x9e };
4176
4177         *status = mgmt_bredr_support(hdev);
4178         if (*status)
4179                 return false;
4180
4181         if (hci_dev_test_flag(hdev, HCI_INQUIRY)) {
4182                 *status = MGMT_STATUS_BUSY;
4183                 return false;
4184         }
4185
4186         hci_inquiry_cache_flush(hdev);
4187
4188         memset(&cp, 0, sizeof(cp));
4189         memcpy(&cp.lap, lap, sizeof(cp.lap));
4190         cp.length = DISCOV_BREDR_INQUIRY_LEN;
4191
4192         hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp);
4193
4194         return true;
4195 }
4196
4197 static bool trigger_le_scan(struct hci_request *req, u16 interval, u8 *status)
4198 {
4199         struct hci_dev *hdev = req->hdev;
4200         struct hci_cp_le_set_scan_param param_cp;
4201         struct hci_cp_le_set_scan_enable enable_cp;
4202         u8 own_addr_type;
4203         int err;
4204
4205         *status = mgmt_le_support(hdev);
4206         if (*status)
4207                 return false;
4208
4209         if (hci_dev_test_flag(hdev, HCI_LE_ADV)) {
4210                 /* Don't let discovery abort an outgoing connection attempt
4211                  * that's using directed advertising.
4212                  */
4213                 if (hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT)) {
4214                         *status = MGMT_STATUS_REJECTED;
4215                         return false;
4216                 }
4217
4218                 cancel_adv_timeout(hdev);
4219                 disable_advertising(req);
4220         }
4221
4222         /* If controller is scanning, it means the background scanning is
4223          * running. Thus, we should temporarily stop it in order to set the
4224          * discovery scanning parameters.
4225          */
4226         if (hci_dev_test_flag(hdev, HCI_LE_SCAN))
4227                 hci_req_add_le_scan_disable(req);
4228
4229         /* All active scans will be done with either a resolvable private
4230          * address (when privacy feature has been enabled) or non-resolvable
4231          * private address.
4232          */
4233         err = hci_update_random_address(req, true, &own_addr_type);
4234         if (err < 0) {
4235                 *status = MGMT_STATUS_FAILED;
4236                 return false;
4237         }
4238
4239         memset(&param_cp, 0, sizeof(param_cp));
4240         param_cp.type = LE_SCAN_ACTIVE;
4241         param_cp.interval = cpu_to_le16(interval);
4242         param_cp.window = cpu_to_le16(DISCOV_LE_SCAN_WIN);
4243         param_cp.own_address_type = own_addr_type;
4244
4245         hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
4246                     &param_cp);
4247
4248         memset(&enable_cp, 0, sizeof(enable_cp));
4249         enable_cp.enable = LE_SCAN_ENABLE;
4250         enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
4251
4252         hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
4253                     &enable_cp);
4254
4255         return true;
4256 }
4257
4258 static bool trigger_discovery(struct hci_request *req, u8 *status)
4259 {
4260         struct hci_dev *hdev = req->hdev;
4261
4262         switch (hdev->discovery.type) {
4263         case DISCOV_TYPE_BREDR:
4264                 if (!trigger_bredr_inquiry(req, status))
4265                         return false;
4266                 break;
4267
4268         case DISCOV_TYPE_INTERLEAVED:
4269                 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY,
4270                              &hdev->quirks)) {
4271                         /* During simultaneous discovery, we double LE scan
4272                          * interval. We must leave some time for the controller
4273                          * to do BR/EDR inquiry.
4274                          */
4275                         if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT * 2,
4276                                              status))
4277                                 return false;
4278
4279                         if (!trigger_bredr_inquiry(req, status))
4280                                 return false;
4281
4282                         return true;
4283                 }
4284
4285                 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
4286                         *status = MGMT_STATUS_NOT_SUPPORTED;
4287                         return false;
4288                 }
4289                 /* fall through */
4290
4291         case DISCOV_TYPE_LE:
4292                 if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT, status))
4293                         return false;
4294                 break;
4295
4296         default:
4297                 *status = MGMT_STATUS_INVALID_PARAMS;
4298                 return false;
4299         }
4300
4301         return true;
4302 }
4303
4304 static void start_discovery_complete(struct hci_dev *hdev, u8 status,
4305                                      u16 opcode)
4306 {
4307         struct mgmt_pending_cmd *cmd;
4308         unsigned long timeout;
4309
4310         BT_DBG("status %d", status);
4311
4312         hci_dev_lock(hdev);
4313
4314         cmd = pending_find(MGMT_OP_START_DISCOVERY, hdev);
4315         if (!cmd)
4316                 cmd = pending_find(MGMT_OP_START_SERVICE_DISCOVERY, hdev);
4317
4318         if (cmd) {
4319                 cmd->cmd_complete(cmd, mgmt_status(status));
4320                 mgmt_pending_remove(cmd);
4321         }
4322
4323         if (status) {
4324                 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4325                 goto unlock;
4326         }
4327
4328         hci_discovery_set_state(hdev, DISCOVERY_FINDING);
4329
4330         /* If the scan involves LE scan, pick proper timeout to schedule
4331          * hdev->le_scan_disable that will stop it.
4332          */
4333         switch (hdev->discovery.type) {
4334         case DISCOV_TYPE_LE:
4335                 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
4336                 break;
4337         case DISCOV_TYPE_INTERLEAVED:
4338                  /* When running simultaneous discovery, the LE scanning time
4339                  * should occupy the whole discovery time sine BR/EDR inquiry
4340                  * and LE scanning are scheduled by the controller.
4341                  *
4342                  * For interleaving discovery in comparison, BR/EDR inquiry
4343                  * and LE scanning are done sequentially with separate
4344                  * timeouts.
4345                  */
4346                 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
4347                         timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
4348                 else
4349                         timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout);
4350                 break;
4351         case DISCOV_TYPE_BREDR:
4352                 timeout = 0;
4353                 break;
4354         default:
4355                 BT_ERR("Invalid discovery type %d", hdev->discovery.type);
4356                 timeout = 0;
4357                 break;
4358         }
4359
4360         if (timeout) {
4361                 /* When service discovery is used and the controller has
4362                  * a strict duplicate filter, it is important to remember
4363                  * the start and duration of the scan. This is required
4364                  * for restarting scanning during the discovery phase.
4365                  */
4366                 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER,
4367                              &hdev->quirks) &&
4368                     hdev->discovery.result_filtering) {
4369                         hdev->discovery.scan_start = jiffies;
4370                         hdev->discovery.scan_duration = timeout;
4371                 }
4372
4373                 queue_delayed_work(hdev->workqueue,
4374                                    &hdev->le_scan_disable, timeout);
4375         }
4376
4377 unlock:
4378         hci_dev_unlock(hdev);
4379 }
4380
4381 static int start_discovery(struct sock *sk, struct hci_dev *hdev,
4382                            void *data, u16 len)
4383 {
4384         struct mgmt_cp_start_discovery *cp = data;
4385         struct mgmt_pending_cmd *cmd;
4386         struct hci_request req;
4387         u8 status;
4388         int err;
4389
4390         BT_DBG("%s", hdev->name);
4391
4392         hci_dev_lock(hdev);
4393
4394         if (!hdev_is_powered(hdev)) {
4395                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
4396                                         MGMT_STATUS_NOT_POWERED,
4397                                         &cp->type, sizeof(cp->type));
4398                 goto failed;
4399         }
4400
4401         if (hdev->discovery.state != DISCOVERY_STOPPED ||
4402             hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) {
4403                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
4404                                         MGMT_STATUS_BUSY, &cp->type,
4405                                         sizeof(cp->type));
4406                 goto failed;
4407         }
4408
4409         cmd = mgmt_pending_add(sk, MGMT_OP_START_DISCOVERY, hdev, data, len);
4410         if (!cmd) {
4411                 err = -ENOMEM;
4412                 goto failed;
4413         }
4414
4415         cmd->cmd_complete = generic_cmd_complete;
4416
4417         /* Clear the discovery filter first to free any previously
4418          * allocated memory for the UUID list.
4419          */
4420         hci_discovery_filter_clear(hdev);
4421
4422         hdev->discovery.type = cp->type;
4423         hdev->discovery.report_invalid_rssi = false;
4424
4425         hci_req_init(&req, hdev);
4426
4427         if (!trigger_discovery(&req, &status)) {
4428                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
4429                                         status, &cp->type, sizeof(cp->type));
4430                 mgmt_pending_remove(cmd);
4431                 goto failed;
4432         }
4433
4434         err = hci_req_run(&req, start_discovery_complete);
4435         if (err < 0) {
4436                 mgmt_pending_remove(cmd);
4437                 goto failed;
4438         }
4439
4440         hci_discovery_set_state(hdev, DISCOVERY_STARTING);
4441
4442 failed:
4443         hci_dev_unlock(hdev);
4444         return err;
4445 }
4446
4447 static int service_discovery_cmd_complete(struct mgmt_pending_cmd *cmd,
4448                                           u8 status)
4449 {
4450         return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status,
4451                                  cmd->param, 1);
4452 }
4453
4454 static int start_service_discovery(struct sock *sk, struct hci_dev *hdev,
4455                                    void *data, u16 len)
4456 {
4457         struct mgmt_cp_start_service_discovery *cp = data;
4458         struct mgmt_pending_cmd *cmd;
4459         struct hci_request req;
4460         const u16 max_uuid_count = ((U16_MAX - sizeof(*cp)) / 16);
4461         u16 uuid_count, expected_len;
4462         u8 status;
4463         int err;
4464
4465         BT_DBG("%s", hdev->name);
4466
4467         hci_dev_lock(hdev);
4468
4469         if (!hdev_is_powered(hdev)) {
4470                 err = mgmt_cmd_complete(sk, hdev->id,
4471                                         MGMT_OP_START_SERVICE_DISCOVERY,
4472                                         MGMT_STATUS_NOT_POWERED,
4473                                         &cp->type, sizeof(cp->type));
4474                 goto failed;
4475         }
4476
4477         if (hdev->discovery.state != DISCOVERY_STOPPED ||
4478             hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) {
4479                 err = mgmt_cmd_complete(sk, hdev->id,
4480                                         MGMT_OP_START_SERVICE_DISCOVERY,
4481                                         MGMT_STATUS_BUSY, &cp->type,
4482                                         sizeof(cp->type));
4483                 goto failed;
4484         }
4485
4486         uuid_count = __le16_to_cpu(cp->uuid_count);
4487         if (uuid_count > max_uuid_count) {
4488                 BT_ERR("service_discovery: too big uuid_count value %u",
4489                        uuid_count);
4490                 err = mgmt_cmd_complete(sk, hdev->id,
4491                                         MGMT_OP_START_SERVICE_DISCOVERY,
4492                                         MGMT_STATUS_INVALID_PARAMS, &cp->type,
4493                                         sizeof(cp->type));
4494                 goto failed;
4495         }
4496
4497         expected_len = sizeof(*cp) + uuid_count * 16;
4498         if (expected_len != len) {
4499                 BT_ERR("service_discovery: expected %u bytes, got %u bytes",
4500                        expected_len, len);
4501                 err = mgmt_cmd_complete(sk, hdev->id,
4502                                         MGMT_OP_START_SERVICE_DISCOVERY,
4503                                         MGMT_STATUS_INVALID_PARAMS, &cp->type,
4504                                         sizeof(cp->type));
4505                 goto failed;
4506         }
4507
4508         cmd = mgmt_pending_add(sk, MGMT_OP_START_SERVICE_DISCOVERY,
4509                                hdev, data, len);
4510         if (!cmd) {
4511                 err = -ENOMEM;
4512                 goto failed;
4513         }
4514
4515         cmd->cmd_complete = service_discovery_cmd_complete;
4516
4517         /* Clear the discovery filter first to free any previously
4518          * allocated memory for the UUID list.
4519          */
4520         hci_discovery_filter_clear(hdev);
4521
4522         hdev->discovery.result_filtering = true;
4523         hdev->discovery.type = cp->type;
4524         hdev->discovery.rssi = cp->rssi;
4525         hdev->discovery.uuid_count = uuid_count;
4526
4527         if (uuid_count > 0) {
4528                 hdev->discovery.uuids = kmemdup(cp->uuids, uuid_count * 16,
4529                                                 GFP_KERNEL);
4530                 if (!hdev->discovery.uuids) {
4531                         err = mgmt_cmd_complete(sk, hdev->id,
4532                                                 MGMT_OP_START_SERVICE_DISCOVERY,
4533                                                 MGMT_STATUS_FAILED,
4534                                                 &cp->type, sizeof(cp->type));
4535                         mgmt_pending_remove(cmd);
4536                         goto failed;
4537                 }
4538         }
4539
4540         hci_req_init(&req, hdev);
4541
4542         if (!trigger_discovery(&req, &status)) {
4543                 err = mgmt_cmd_complete(sk, hdev->id,
4544                                         MGMT_OP_START_SERVICE_DISCOVERY,
4545                                         status, &cp->type, sizeof(cp->type));
4546                 mgmt_pending_remove(cmd);
4547                 goto failed;
4548         }
4549
4550         err = hci_req_run(&req, start_discovery_complete);
4551         if (err < 0) {
4552                 mgmt_pending_remove(cmd);
4553                 goto failed;
4554         }
4555
4556         hci_discovery_set_state(hdev, DISCOVERY_STARTING);
4557
4558 failed:
4559         hci_dev_unlock(hdev);
4560         return err;
4561 }
4562
4563 static void stop_discovery_complete(struct hci_dev *hdev, u8 status, u16 opcode)
4564 {
4565         struct mgmt_pending_cmd *cmd;
4566
4567         BT_DBG("status %d", status);
4568
4569         hci_dev_lock(hdev);
4570
4571         cmd = pending_find(MGMT_OP_STOP_DISCOVERY, hdev);
4572         if (cmd) {
4573                 cmd->cmd_complete(cmd, mgmt_status(status));
4574                 mgmt_pending_remove(cmd);
4575         }
4576
4577         if (!status)
4578                 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4579
4580         hci_dev_unlock(hdev);
4581 }
4582
4583 static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
4584                           u16 len)
4585 {
4586         struct mgmt_cp_stop_discovery *mgmt_cp = data;
4587         struct mgmt_pending_cmd *cmd;
4588         struct hci_request req;
4589         int err;
4590
4591         BT_DBG("%s", hdev->name);
4592
4593         hci_dev_lock(hdev);
4594
4595         if (!hci_discovery_active(hdev)) {
4596                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
4597                                         MGMT_STATUS_REJECTED, &mgmt_cp->type,
4598                                         sizeof(mgmt_cp->type));
4599                 goto unlock;
4600         }
4601
4602         if (hdev->discovery.type != mgmt_cp->type) {
4603                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
4604                                         MGMT_STATUS_INVALID_PARAMS,
4605                                         &mgmt_cp->type, sizeof(mgmt_cp->type));
4606                 goto unlock;
4607         }
4608
4609         cmd = mgmt_pending_add(sk, MGMT_OP_STOP_DISCOVERY, hdev, data, len);
4610         if (!cmd) {
4611                 err = -ENOMEM;
4612                 goto unlock;
4613         }
4614
4615         cmd->cmd_complete = generic_cmd_complete;
4616
4617         hci_req_init(&req, hdev);
4618
4619         hci_stop_discovery(&req);
4620
4621         err = hci_req_run(&req, stop_discovery_complete);
4622         if (!err) {
4623                 hci_discovery_set_state(hdev, DISCOVERY_STOPPING);
4624                 goto unlock;
4625         }
4626
4627         mgmt_pending_remove(cmd);
4628
4629         /* If no HCI commands were sent we're done */
4630         if (err == -ENODATA) {
4631                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, 0,
4632                                         &mgmt_cp->type, sizeof(mgmt_cp->type));
4633                 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4634         }
4635
4636 unlock:
4637         hci_dev_unlock(hdev);
4638         return err;
4639 }
4640
4641 static int confirm_name(struct sock *sk, struct hci_dev *hdev, void *data,
4642                         u16 len)
4643 {
4644         struct mgmt_cp_confirm_name *cp = data;
4645         struct inquiry_entry *e;
4646         int err;
4647
4648         BT_DBG("%s", hdev->name);
4649
4650         hci_dev_lock(hdev);
4651
4652         if (!hci_discovery_active(hdev)) {
4653                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
4654                                         MGMT_STATUS_FAILED, &cp->addr,
4655                                         sizeof(cp->addr));
4656                 goto failed;
4657         }
4658
4659         e = hci_inquiry_cache_lookup_unknown(hdev, &cp->addr.bdaddr);
4660         if (!e) {
4661                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
4662                                         MGMT_STATUS_INVALID_PARAMS, &cp->addr,
4663                                         sizeof(cp->addr));
4664                 goto failed;
4665         }
4666
4667         if (cp->name_known) {
4668                 e->name_state = NAME_KNOWN;
4669                 list_del(&e->list);
4670         } else {
4671                 e->name_state = NAME_NEEDED;
4672                 hci_inquiry_cache_update_resolve(hdev, e);
4673         }
4674
4675         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, 0,
4676                                 &cp->addr, sizeof(cp->addr));
4677
4678 failed:
4679         hci_dev_unlock(hdev);
4680         return err;
4681 }
4682
4683 static int block_device(struct sock *sk, struct hci_dev *hdev, void *data,
4684                         u16 len)
4685 {
4686         struct mgmt_cp_block_device *cp = data;
4687         u8 status;
4688         int err;
4689
4690         BT_DBG("%s", hdev->name);
4691
4692         if (!bdaddr_type_is_valid(cp->addr.type))
4693                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE,
4694                                          MGMT_STATUS_INVALID_PARAMS,
4695                                          &cp->addr, sizeof(cp->addr));
4696
4697         hci_dev_lock(hdev);
4698
4699         err = hci_bdaddr_list_add(&hdev->blacklist, &cp->addr.bdaddr,
4700                                   cp->addr.type);
4701         if (err < 0) {
4702                 status = MGMT_STATUS_FAILED;
4703                 goto done;
4704         }
4705
4706         mgmt_event(MGMT_EV_DEVICE_BLOCKED, hdev, &cp->addr, sizeof(cp->addr),
4707                    sk);
4708         status = MGMT_STATUS_SUCCESS;
4709
4710 done:
4711         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE, status,
4712                                 &cp->addr, sizeof(cp->addr));
4713
4714         hci_dev_unlock(hdev);
4715
4716         return err;
4717 }
4718
4719 static int unblock_device(struct sock *sk, struct hci_dev *hdev, void *data,
4720                           u16 len)
4721 {
4722         struct mgmt_cp_unblock_device *cp = data;
4723         u8 status;
4724         int err;
4725
4726         BT_DBG("%s", hdev->name);
4727
4728         if (!bdaddr_type_is_valid(cp->addr.type))
4729                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE,
4730                                          MGMT_STATUS_INVALID_PARAMS,
4731                                          &cp->addr, sizeof(cp->addr));
4732
4733         hci_dev_lock(hdev);
4734
4735         err = hci_bdaddr_list_del(&hdev->blacklist, &cp->addr.bdaddr,
4736                                   cp->addr.type);
4737         if (err < 0) {
4738                 status = MGMT_STATUS_INVALID_PARAMS;
4739                 goto done;
4740         }
4741
4742         mgmt_event(MGMT_EV_DEVICE_UNBLOCKED, hdev, &cp->addr, sizeof(cp->addr),
4743                    sk);
4744         status = MGMT_STATUS_SUCCESS;
4745
4746 done:
4747         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE, status,
4748                                 &cp->addr, sizeof(cp->addr));
4749
4750         hci_dev_unlock(hdev);
4751
4752         return err;
4753 }
4754
4755 static int set_device_id(struct sock *sk, struct hci_dev *hdev, void *data,
4756                          u16 len)
4757 {
4758         struct mgmt_cp_set_device_id *cp = data;
4759         struct hci_request req;
4760         int err;
4761         __u16 source;
4762
4763         BT_DBG("%s", hdev->name);
4764
4765         source = __le16_to_cpu(cp->source);
4766
4767         if (source > 0x0002)
4768                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEVICE_ID,
4769                                        MGMT_STATUS_INVALID_PARAMS);
4770
4771         hci_dev_lock(hdev);
4772
4773         hdev->devid_source = source;
4774         hdev->devid_vendor = __le16_to_cpu(cp->vendor);
4775         hdev->devid_product = __le16_to_cpu(cp->product);
4776         hdev->devid_version = __le16_to_cpu(cp->version);
4777
4778         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEVICE_ID, 0,
4779                                 NULL, 0);
4780
4781         hci_req_init(&req, hdev);
4782         update_eir(&req);
4783         hci_req_run(&req, NULL);
4784
4785         hci_dev_unlock(hdev);
4786
4787         return err;
4788 }
4789
4790 static void enable_advertising_instance(struct hci_dev *hdev, u8 status,
4791                                         u16 opcode)
4792 {
4793         BT_DBG("status %d", status);
4794 }
4795
4796 static void set_advertising_complete(struct hci_dev *hdev, u8 status,
4797                                      u16 opcode)
4798 {
4799         struct cmd_lookup match = { NULL, hdev };
4800         struct hci_request req;
4801         u8 instance;
4802         struct adv_info *adv_instance;
4803         int err;
4804
4805         hci_dev_lock(hdev);
4806
4807         if (status) {
4808                 u8 mgmt_err = mgmt_status(status);
4809
4810                 mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev,
4811                                      cmd_status_rsp, &mgmt_err);
4812                 goto unlock;
4813         }
4814
4815         if (hci_dev_test_flag(hdev, HCI_LE_ADV))
4816                 hci_dev_set_flag(hdev, HCI_ADVERTISING);
4817         else
4818                 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
4819
4820         mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev, settings_rsp,
4821                              &match);
4822
4823         new_settings(hdev, match.sk);
4824
4825         if (match.sk)
4826                 sock_put(match.sk);
4827
4828         /* If "Set Advertising" was just disabled and instance advertising was
4829          * set up earlier, then re-enable multi-instance advertising.
4830          */
4831         if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
4832             !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) ||
4833             list_empty(&hdev->adv_instances))
4834                 goto unlock;
4835
4836         instance = hdev->cur_adv_instance;
4837         if (!instance) {
4838                 adv_instance = list_first_entry_or_null(&hdev->adv_instances,
4839                                                         struct adv_info, list);
4840                 if (!adv_instance)
4841                         goto unlock;
4842
4843                 instance = adv_instance->instance;
4844         }
4845
4846         hci_req_init(&req, hdev);
4847
4848         err = schedule_adv_instance(&req, instance, true);
4849
4850         if (!err)
4851                 err = hci_req_run(&req, enable_advertising_instance);
4852
4853         if (err)
4854                 BT_ERR("Failed to re-configure advertising");
4855
4856 unlock:
4857         hci_dev_unlock(hdev);
4858 }
4859
4860 static int set_advertising(struct sock *sk, struct hci_dev *hdev, void *data,
4861                            u16 len)
4862 {
4863         struct mgmt_mode *cp = data;
4864         struct mgmt_pending_cmd *cmd;
4865         struct hci_request req;
4866         u8 val, status;
4867         int err;
4868
4869         BT_DBG("request for %s", hdev->name);
4870
4871         status = mgmt_le_support(hdev);
4872         if (status)
4873                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4874                                        status);
4875
4876         if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
4877                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4878                                        MGMT_STATUS_INVALID_PARAMS);
4879
4880         hci_dev_lock(hdev);
4881
4882         val = !!cp->val;
4883
4884         /* The following conditions are ones which mean that we should
4885          * not do any HCI communication but directly send a mgmt
4886          * response to user space (after toggling the flag if
4887          * necessary).
4888          */
4889         if (!hdev_is_powered(hdev) ||
4890             (val == hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
4891              (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE)) ||
4892             hci_conn_num(hdev, LE_LINK) > 0 ||
4893             (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
4894              hdev->le_scan_type == LE_SCAN_ACTIVE)) {
4895                 bool changed;
4896
4897                 if (cp->val) {
4898                         changed = !hci_dev_test_and_set_flag(hdev, HCI_ADVERTISING);
4899                         if (cp->val == 0x02)
4900                                 hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4901                         else
4902                                 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4903                 } else {
4904                         changed = hci_dev_test_and_clear_flag(hdev, HCI_ADVERTISING);
4905                         hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4906                 }
4907
4908                 err = send_settings_rsp(sk, MGMT_OP_SET_ADVERTISING, hdev);
4909                 if (err < 0)
4910                         goto unlock;
4911
4912                 if (changed)
4913                         err = new_settings(hdev, sk);
4914
4915                 goto unlock;
4916         }
4917
4918         if (pending_find(MGMT_OP_SET_ADVERTISING, hdev) ||
4919             pending_find(MGMT_OP_SET_LE, hdev)) {
4920                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4921                                       MGMT_STATUS_BUSY);
4922                 goto unlock;
4923         }
4924
4925         cmd = mgmt_pending_add(sk, MGMT_OP_SET_ADVERTISING, hdev, data, len);
4926         if (!cmd) {
4927                 err = -ENOMEM;
4928                 goto unlock;
4929         }
4930
4931         hci_req_init(&req, hdev);
4932
4933         if (cp->val == 0x02)
4934                 hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4935         else
4936                 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4937
4938         cancel_adv_timeout(hdev);
4939
4940         if (val) {
4941                 /* Switch to instance "0" for the Set Advertising setting.
4942                  * We cannot use update_[adv|scan_rsp]_data() here as the
4943                  * HCI_ADVERTISING flag is not yet set.
4944                  */
4945                 update_inst_adv_data(&req, 0x00);
4946                 update_inst_scan_rsp_data(&req, 0x00);
4947                 enable_advertising(&req);
4948         } else {
4949                 disable_advertising(&req);
4950         }
4951
4952         err = hci_req_run(&req, set_advertising_complete);
4953         if (err < 0)
4954                 mgmt_pending_remove(cmd);
4955
4956 unlock:
4957         hci_dev_unlock(hdev);
4958         return err;
4959 }
4960
4961 static int set_static_address(struct sock *sk, struct hci_dev *hdev,
4962                               void *data, u16 len)
4963 {
4964         struct mgmt_cp_set_static_address *cp = data;
4965         int err;
4966
4967         BT_DBG("%s", hdev->name);
4968
4969         if (!lmp_le_capable(hdev))
4970                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS,
4971                                        MGMT_STATUS_NOT_SUPPORTED);
4972
4973         if (hdev_is_powered(hdev))
4974                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS,
4975                                        MGMT_STATUS_REJECTED);
4976
4977         if (bacmp(&cp->bdaddr, BDADDR_ANY)) {
4978                 if (!bacmp(&cp->bdaddr, BDADDR_NONE))
4979                         return mgmt_cmd_status(sk, hdev->id,
4980                                                MGMT_OP_SET_STATIC_ADDRESS,
4981                                                MGMT_STATUS_INVALID_PARAMS);
4982
4983                 /* Two most significant bits shall be set */
4984                 if ((cp->bdaddr.b[5] & 0xc0) != 0xc0)
4985                         return mgmt_cmd_status(sk, hdev->id,
4986                                                MGMT_OP_SET_STATIC_ADDRESS,
4987                                                MGMT_STATUS_INVALID_PARAMS);
4988         }
4989
4990         hci_dev_lock(hdev);
4991
4992         bacpy(&hdev->static_addr, &cp->bdaddr);
4993
4994         err = send_settings_rsp(sk, MGMT_OP_SET_STATIC_ADDRESS, hdev);
4995         if (err < 0)
4996                 goto unlock;
4997
4998         err = new_settings(hdev, sk);
4999
5000 unlock:
5001         hci_dev_unlock(hdev);
5002         return err;
5003 }
5004
5005 static int set_scan_params(struct sock *sk, struct hci_dev *hdev,
5006                            void *data, u16 len)
5007 {
5008         struct mgmt_cp_set_scan_params *cp = data;
5009         __u16 interval, window;
5010         int err;
5011
5012         BT_DBG("%s", hdev->name);
5013
5014         if (!lmp_le_capable(hdev))
5015                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5016                                        MGMT_STATUS_NOT_SUPPORTED);
5017
5018         interval = __le16_to_cpu(cp->interval);
5019
5020         if (interval < 0x0004 || interval > 0x4000)
5021                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5022                                        MGMT_STATUS_INVALID_PARAMS);
5023
5024         window = __le16_to_cpu(cp->window);
5025
5026         if (window < 0x0004 || window > 0x4000)
5027                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5028                                        MGMT_STATUS_INVALID_PARAMS);
5029
5030         if (window > interval)
5031                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5032                                        MGMT_STATUS_INVALID_PARAMS);
5033
5034         hci_dev_lock(hdev);
5035
5036         hdev->le_scan_interval = interval;
5037         hdev->le_scan_window = window;
5038
5039         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 0,
5040                                 NULL, 0);
5041
5042         /* If background scan is running, restart it so new parameters are
5043          * loaded.
5044          */
5045         if (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
5046             hdev->discovery.state == DISCOVERY_STOPPED) {
5047                 struct hci_request req;
5048
5049                 hci_req_init(&req, hdev);
5050
5051                 hci_req_add_le_scan_disable(&req);
5052                 hci_req_add_le_passive_scan(&req);
5053
5054                 hci_req_run(&req, NULL);
5055         }
5056
5057         hci_dev_unlock(hdev);
5058
5059         return err;
5060 }
5061
5062 static void fast_connectable_complete(struct hci_dev *hdev, u8 status,
5063                                       u16 opcode)
5064 {
5065         struct mgmt_pending_cmd *cmd;
5066
5067         BT_DBG("status 0x%02x", status);
5068
5069         hci_dev_lock(hdev);
5070
5071         cmd = pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev);
5072         if (!cmd)
5073                 goto unlock;
5074
5075         if (status) {
5076                 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5077                                 mgmt_status(status));
5078         } else {
5079                 struct mgmt_mode *cp = cmd->param;
5080
5081                 if (cp->val)
5082                         hci_dev_set_flag(hdev, HCI_FAST_CONNECTABLE);
5083                 else
5084                         hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE);
5085
5086                 send_settings_rsp(cmd->sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev);
5087                 new_settings(hdev, cmd->sk);
5088         }
5089
5090         mgmt_pending_remove(cmd);
5091
5092 unlock:
5093         hci_dev_unlock(hdev);
5094 }
5095
5096 static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev,
5097                                 void *data, u16 len)
5098 {
5099         struct mgmt_mode *cp = data;
5100         struct mgmt_pending_cmd *cmd;
5101         struct hci_request req;
5102         int err;
5103
5104         BT_DBG("%s", hdev->name);
5105
5106         if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) ||
5107             hdev->hci_ver < BLUETOOTH_VER_1_2)
5108                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5109                                        MGMT_STATUS_NOT_SUPPORTED);
5110
5111         if (cp->val != 0x00 && cp->val != 0x01)
5112                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5113                                        MGMT_STATUS_INVALID_PARAMS);
5114
5115         hci_dev_lock(hdev);
5116
5117         if (pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev)) {
5118                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5119                                       MGMT_STATUS_BUSY);
5120                 goto unlock;
5121         }
5122
5123         if (!!cp->val == hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) {
5124                 err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE,
5125                                         hdev);
5126                 goto unlock;
5127         }
5128
5129         if (!hdev_is_powered(hdev)) {
5130                 hci_dev_change_flag(hdev, HCI_FAST_CONNECTABLE);
5131                 err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE,
5132                                         hdev);
5133                 new_settings(hdev, sk);
5134                 goto unlock;
5135         }
5136
5137         cmd = mgmt_pending_add(sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev,
5138                                data, len);
5139         if (!cmd) {
5140                 err = -ENOMEM;
5141                 goto unlock;
5142         }
5143
5144         hci_req_init(&req, hdev);
5145
5146         write_fast_connectable(&req, cp->val);
5147
5148         err = hci_req_run(&req, fast_connectable_complete);
5149         if (err < 0) {
5150                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5151                                       MGMT_STATUS_FAILED);
5152                 mgmt_pending_remove(cmd);
5153         }
5154
5155 unlock:
5156         hci_dev_unlock(hdev);
5157
5158         return err;
5159 }
5160
5161 static void set_bredr_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5162 {
5163         struct mgmt_pending_cmd *cmd;
5164
5165         BT_DBG("status 0x%02x", status);
5166
5167         hci_dev_lock(hdev);
5168
5169         cmd = pending_find(MGMT_OP_SET_BREDR, hdev);
5170         if (!cmd)
5171                 goto unlock;
5172
5173         if (status) {
5174                 u8 mgmt_err = mgmt_status(status);
5175
5176                 /* We need to restore the flag if related HCI commands
5177                  * failed.
5178                  */
5179                 hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED);
5180
5181                 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
5182         } else {
5183                 send_settings_rsp(cmd->sk, MGMT_OP_SET_BREDR, hdev);
5184                 new_settings(hdev, cmd->sk);
5185         }
5186
5187         mgmt_pending_remove(cmd);
5188
5189 unlock:
5190         hci_dev_unlock(hdev);
5191 }
5192
5193 static int set_bredr(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
5194 {
5195         struct mgmt_mode *cp = data;
5196         struct mgmt_pending_cmd *cmd;
5197         struct hci_request req;
5198         int err;
5199
5200         BT_DBG("request for %s", hdev->name);
5201
5202         if (!lmp_bredr_capable(hdev) || !lmp_le_capable(hdev))
5203                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5204                                        MGMT_STATUS_NOT_SUPPORTED);
5205
5206         if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
5207                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5208                                        MGMT_STATUS_REJECTED);
5209
5210         if (cp->val != 0x00 && cp->val != 0x01)
5211                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5212                                        MGMT_STATUS_INVALID_PARAMS);
5213
5214         hci_dev_lock(hdev);
5215
5216         if (cp->val == hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
5217                 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev);
5218                 goto unlock;
5219         }
5220
5221         if (!hdev_is_powered(hdev)) {
5222                 if (!cp->val) {
5223                         hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
5224                         hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
5225                         hci_dev_clear_flag(hdev, HCI_LINK_SECURITY);
5226                         hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE);
5227                         hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
5228                 }
5229
5230                 hci_dev_change_flag(hdev, HCI_BREDR_ENABLED);
5231
5232                 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev);
5233                 if (err < 0)
5234                         goto unlock;
5235
5236                 err = new_settings(hdev, sk);
5237                 goto unlock;
5238         }
5239
5240         /* Reject disabling when powered on */
5241         if (!cp->val) {
5242                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5243                                       MGMT_STATUS_REJECTED);
5244                 goto unlock;
5245         } else {
5246                 /* When configuring a dual-mode controller to operate
5247                  * with LE only and using a static address, then switching
5248                  * BR/EDR back on is not allowed.
5249                  *
5250                  * Dual-mode controllers shall operate with the public
5251                  * address as its identity address for BR/EDR and LE. So
5252                  * reject the attempt to create an invalid configuration.
5253                  *
5254                  * The same restrictions applies when secure connections
5255                  * has been enabled. For BR/EDR this is a controller feature
5256                  * while for LE it is a host stack feature. This means that
5257                  * switching BR/EDR back on when secure connections has been
5258                  * enabled is not a supported transaction.
5259                  */
5260                 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
5261                     (bacmp(&hdev->static_addr, BDADDR_ANY) ||
5262                      hci_dev_test_flag(hdev, HCI_SC_ENABLED))) {
5263                         err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5264                                               MGMT_STATUS_REJECTED);
5265                         goto unlock;
5266                 }
5267         }
5268
5269         if (pending_find(MGMT_OP_SET_BREDR, hdev)) {
5270                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5271                                       MGMT_STATUS_BUSY);
5272                 goto unlock;
5273         }
5274
5275         cmd = mgmt_pending_add(sk, MGMT_OP_SET_BREDR, hdev, data, len);
5276         if (!cmd) {
5277                 err = -ENOMEM;
5278                 goto unlock;
5279         }
5280
5281         /* We need to flip the bit already here so that update_adv_data
5282          * generates the correct flags.
5283          */
5284         hci_dev_set_flag(hdev, HCI_BREDR_ENABLED);
5285
5286         hci_req_init(&req, hdev);
5287
5288         write_fast_connectable(&req, false);
5289         __hci_update_page_scan(&req);
5290
5291         /* Since only the advertising data flags will change, there
5292          * is no need to update the scan response data.
5293          */
5294         update_adv_data(&req);
5295
5296         err = hci_req_run(&req, set_bredr_complete);
5297         if (err < 0)
5298                 mgmt_pending_remove(cmd);
5299
5300 unlock:
5301         hci_dev_unlock(hdev);
5302         return err;
5303 }
5304
5305 static void sc_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5306 {
5307         struct mgmt_pending_cmd *cmd;
5308         struct mgmt_mode *cp;
5309
5310         BT_DBG("%s status %u", hdev->name, status);
5311
5312         hci_dev_lock(hdev);
5313
5314         cmd = pending_find(MGMT_OP_SET_SECURE_CONN, hdev);
5315         if (!cmd)
5316                 goto unlock;
5317
5318         if (status) {
5319                 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode,
5320                                 mgmt_status(status));
5321                 goto remove;
5322         }
5323
5324         cp = cmd->param;
5325
5326         switch (cp->val) {
5327         case 0x00:
5328                 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
5329                 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5330                 break;
5331         case 0x01:
5332                 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
5333                 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5334                 break;
5335         case 0x02:
5336                 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
5337                 hci_dev_set_flag(hdev, HCI_SC_ONLY);
5338                 break;
5339         }
5340
5341         send_settings_rsp(cmd->sk, MGMT_OP_SET_SECURE_CONN, hdev);
5342         new_settings(hdev, cmd->sk);
5343
5344 remove:
5345         mgmt_pending_remove(cmd);
5346 unlock:
5347         hci_dev_unlock(hdev);
5348 }
5349
5350 static int set_secure_conn(struct sock *sk, struct hci_dev *hdev,
5351                            void *data, u16 len)
5352 {
5353         struct mgmt_mode *cp = data;
5354         struct mgmt_pending_cmd *cmd;
5355         struct hci_request req;
5356         u8 val;
5357         int err;
5358
5359         BT_DBG("request for %s", hdev->name);
5360
5361         if (!lmp_sc_capable(hdev) &&
5362             !hci_dev_test_flag(hdev, HCI_LE_ENABLED))
5363                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5364                                        MGMT_STATUS_NOT_SUPPORTED);
5365
5366         if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
5367             lmp_sc_capable(hdev) &&
5368             !hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
5369                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5370                                        MGMT_STATUS_REJECTED);
5371
5372         if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
5373                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5374                                   MGMT_STATUS_INVALID_PARAMS);
5375
5376         hci_dev_lock(hdev);
5377
5378         if (!hdev_is_powered(hdev) || !lmp_sc_capable(hdev) ||
5379             !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
5380                 bool changed;
5381
5382                 if (cp->val) {
5383                         changed = !hci_dev_test_and_set_flag(hdev,
5384                                                              HCI_SC_ENABLED);
5385                         if (cp->val == 0x02)
5386                                 hci_dev_set_flag(hdev, HCI_SC_ONLY);
5387                         else
5388                                 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5389                 } else {
5390                         changed = hci_dev_test_and_clear_flag(hdev,
5391                                                               HCI_SC_ENABLED);
5392                         hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5393                 }
5394
5395                 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev);
5396                 if (err < 0)
5397                         goto failed;
5398
5399                 if (changed)
5400                         err = new_settings(hdev, sk);
5401
5402                 goto failed;
5403         }
5404
5405         if (pending_find(MGMT_OP_SET_SECURE_CONN, hdev)) {
5406                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5407                                       MGMT_STATUS_BUSY);
5408                 goto failed;
5409         }
5410
5411         val = !!cp->val;
5412
5413         if (val == hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
5414             (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5415                 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev);
5416                 goto failed;
5417         }
5418
5419         cmd = mgmt_pending_add(sk, MGMT_OP_SET_SECURE_CONN, hdev, data, len);
5420         if (!cmd) {
5421                 err = -ENOMEM;
5422                 goto failed;
5423         }
5424
5425         hci_req_init(&req, hdev);
5426         hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT, 1, &val);
5427         err = hci_req_run(&req, sc_enable_complete);
5428         if (err < 0) {
5429                 mgmt_pending_remove(cmd);
5430                 goto failed;
5431         }
5432
5433 failed:
5434         hci_dev_unlock(hdev);
5435         return err;
5436 }
5437
5438 static int set_debug_keys(struct sock *sk, struct hci_dev *hdev,
5439                           void *data, u16 len)
5440 {
5441         struct mgmt_mode *cp = data;
5442         bool changed, use_changed;
5443         int err;
5444
5445         BT_DBG("request for %s", hdev->name);
5446
5447         if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
5448                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEBUG_KEYS,
5449                                        MGMT_STATUS_INVALID_PARAMS);
5450
5451         hci_dev_lock(hdev);
5452
5453         if (cp->val)
5454                 changed = !hci_dev_test_and_set_flag(hdev, HCI_KEEP_DEBUG_KEYS);
5455         else
5456                 changed = hci_dev_test_and_clear_flag(hdev,
5457                                                       HCI_KEEP_DEBUG_KEYS);
5458
5459         if (cp->val == 0x02)
5460                 use_changed = !hci_dev_test_and_set_flag(hdev,
5461                                                          HCI_USE_DEBUG_KEYS);
5462         else
5463                 use_changed = hci_dev_test_and_clear_flag(hdev,
5464                                                           HCI_USE_DEBUG_KEYS);
5465
5466         if (hdev_is_powered(hdev) && use_changed &&
5467             hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
5468                 u8 mode = (cp->val == 0x02) ? 0x01 : 0x00;
5469                 hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
5470                              sizeof(mode), &mode);
5471         }
5472
5473         err = send_settings_rsp(sk, MGMT_OP_SET_DEBUG_KEYS, hdev);
5474         if (err < 0)
5475                 goto unlock;
5476
5477         if (changed)
5478                 err = new_settings(hdev, sk);
5479
5480 unlock:
5481         hci_dev_unlock(hdev);
5482         return err;
5483 }
5484
5485 static int set_privacy(struct sock *sk, struct hci_dev *hdev, void *cp_data,
5486                        u16 len)
5487 {
5488         struct mgmt_cp_set_privacy *cp = cp_data;
5489         bool changed;
5490         int err;
5491
5492         BT_DBG("request for %s", hdev->name);
5493
5494         if (!lmp_le_capable(hdev))
5495                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
5496                                        MGMT_STATUS_NOT_SUPPORTED);
5497
5498         if (cp->privacy != 0x00 && cp->privacy != 0x01)
5499                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
5500                                        MGMT_STATUS_INVALID_PARAMS);
5501
5502         if (hdev_is_powered(hdev))
5503                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
5504                                        MGMT_STATUS_REJECTED);
5505
5506         hci_dev_lock(hdev);
5507
5508         /* If user space supports this command it is also expected to
5509          * handle IRKs. Therefore, set the HCI_RPA_RESOLVING flag.
5510          */
5511         hci_dev_set_flag(hdev, HCI_RPA_RESOLVING);
5512
5513         if (cp->privacy) {
5514                 changed = !hci_dev_test_and_set_flag(hdev, HCI_PRIVACY);
5515                 memcpy(hdev->irk, cp->irk, sizeof(hdev->irk));
5516                 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
5517         } else {
5518                 changed = hci_dev_test_and_clear_flag(hdev, HCI_PRIVACY);
5519                 memset(hdev->irk, 0, sizeof(hdev->irk));
5520                 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
5521         }
5522
5523         err = send_settings_rsp(sk, MGMT_OP_SET_PRIVACY, hdev);
5524         if (err < 0)
5525                 goto unlock;
5526
5527         if (changed)
5528                 err = new_settings(hdev, sk);
5529
5530 unlock:
5531         hci_dev_unlock(hdev);
5532         return err;
5533 }
5534
5535 static bool irk_is_valid(struct mgmt_irk_info *irk)
5536 {
5537         switch (irk->addr.type) {
5538         case BDADDR_LE_PUBLIC:
5539                 return true;
5540
5541         case BDADDR_LE_RANDOM:
5542                 /* Two most significant bits shall be set */
5543                 if ((irk->addr.bdaddr.b[5] & 0xc0) != 0xc0)
5544                         return false;
5545                 return true;
5546         }
5547
5548         return false;
5549 }
5550
5551 static int load_irks(struct sock *sk, struct hci_dev *hdev, void *cp_data,
5552                      u16 len)
5553 {
5554         struct mgmt_cp_load_irks *cp = cp_data;
5555         const u16 max_irk_count = ((U16_MAX - sizeof(*cp)) /
5556                                    sizeof(struct mgmt_irk_info));
5557         u16 irk_count, expected_len;
5558         int i, err;
5559
5560         BT_DBG("request for %s", hdev->name);
5561
5562         if (!lmp_le_capable(hdev))
5563                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5564                                        MGMT_STATUS_NOT_SUPPORTED);
5565
5566         irk_count = __le16_to_cpu(cp->irk_count);
5567         if (irk_count > max_irk_count) {
5568                 BT_ERR("load_irks: too big irk_count value %u", irk_count);
5569                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5570                                        MGMT_STATUS_INVALID_PARAMS);
5571         }
5572
5573         expected_len = sizeof(*cp) + irk_count * sizeof(struct mgmt_irk_info);
5574         if (expected_len != len) {
5575                 BT_ERR("load_irks: expected %u bytes, got %u bytes",
5576                        expected_len, len);
5577                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5578                                        MGMT_STATUS_INVALID_PARAMS);
5579         }
5580
5581         BT_DBG("%s irk_count %u", hdev->name, irk_count);
5582
5583         for (i = 0; i < irk_count; i++) {
5584                 struct mgmt_irk_info *key = &cp->irks[i];
5585
5586                 if (!irk_is_valid(key))
5587                         return mgmt_cmd_status(sk, hdev->id,
5588                                                MGMT_OP_LOAD_IRKS,
5589                                                MGMT_STATUS_INVALID_PARAMS);
5590         }
5591
5592         hci_dev_lock(hdev);
5593
5594         hci_smp_irks_clear(hdev);
5595
5596         for (i = 0; i < irk_count; i++) {
5597                 struct mgmt_irk_info *irk = &cp->irks[i];
5598                 u8 addr_type;
5599
5600                 if (irk->addr.type == BDADDR_LE_PUBLIC)
5601                         addr_type = ADDR_LE_DEV_PUBLIC;
5602                 else
5603                         addr_type = ADDR_LE_DEV_RANDOM;
5604
5605                 hci_add_irk(hdev, &irk->addr.bdaddr, addr_type, irk->val,
5606                             BDADDR_ANY);
5607         }
5608
5609         hci_dev_set_flag(hdev, HCI_RPA_RESOLVING);
5610
5611         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_IRKS, 0, NULL, 0);
5612
5613         hci_dev_unlock(hdev);
5614
5615         return err;
5616 }
5617
5618 static bool ltk_is_valid(struct mgmt_ltk_info *key)
5619 {
5620         if (key->master != 0x00 && key->master != 0x01)
5621                 return false;
5622
5623         switch (key->addr.type) {
5624         case BDADDR_LE_PUBLIC:
5625                 return true;
5626
5627         case BDADDR_LE_RANDOM:
5628                 /* Two most significant bits shall be set */
5629                 if ((key->addr.bdaddr.b[5] & 0xc0) != 0xc0)
5630                         return false;
5631                 return true;
5632         }
5633
5634         return false;
5635 }
5636
5637 static int load_long_term_keys(struct sock *sk, struct hci_dev *hdev,
5638                                void *cp_data, u16 len)
5639 {
5640         struct mgmt_cp_load_long_term_keys *cp = cp_data;
5641         const u16 max_key_count = ((U16_MAX - sizeof(*cp)) /
5642                                    sizeof(struct mgmt_ltk_info));
5643         u16 key_count, expected_len;
5644         int i, err;
5645
5646         BT_DBG("request for %s", hdev->name);
5647
5648         if (!lmp_le_capable(hdev))
5649                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5650                                        MGMT_STATUS_NOT_SUPPORTED);
5651
5652         key_count = __le16_to_cpu(cp->key_count);
5653         if (key_count > max_key_count) {
5654                 BT_ERR("load_ltks: too big key_count value %u", key_count);
5655                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5656                                        MGMT_STATUS_INVALID_PARAMS);
5657         }
5658
5659         expected_len = sizeof(*cp) + key_count *
5660                                         sizeof(struct mgmt_ltk_info);
5661         if (expected_len != len) {
5662                 BT_ERR("load_keys: expected %u bytes, got %u bytes",
5663                        expected_len, len);
5664                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5665                                        MGMT_STATUS_INVALID_PARAMS);
5666         }
5667
5668         BT_DBG("%s key_count %u", hdev->name, key_count);
5669
5670         for (i = 0; i < key_count; i++) {
5671                 struct mgmt_ltk_info *key = &cp->keys[i];
5672
5673                 if (!ltk_is_valid(key))
5674                         return mgmt_cmd_status(sk, hdev->id,
5675                                                MGMT_OP_LOAD_LONG_TERM_KEYS,
5676                                                MGMT_STATUS_INVALID_PARAMS);
5677         }
5678
5679         hci_dev_lock(hdev);
5680
5681         hci_smp_ltks_clear(hdev);
5682
5683         for (i = 0; i < key_count; i++) {
5684                 struct mgmt_ltk_info *key = &cp->keys[i];
5685                 u8 type, addr_type, authenticated;
5686
5687                 if (key->addr.type == BDADDR_LE_PUBLIC)
5688                         addr_type = ADDR_LE_DEV_PUBLIC;
5689                 else
5690                         addr_type = ADDR_LE_DEV_RANDOM;
5691
5692                 switch (key->type) {
5693                 case MGMT_LTK_UNAUTHENTICATED:
5694                         authenticated = 0x00;
5695                         type = key->master ? SMP_LTK : SMP_LTK_SLAVE;
5696                         break;
5697                 case MGMT_LTK_AUTHENTICATED:
5698                         authenticated = 0x01;
5699                         type = key->master ? SMP_LTK : SMP_LTK_SLAVE;
5700                         break;
5701                 case MGMT_LTK_P256_UNAUTH:
5702                         authenticated = 0x00;
5703                         type = SMP_LTK_P256;
5704                         break;
5705                 case MGMT_LTK_P256_AUTH:
5706                         authenticated = 0x01;
5707                         type = SMP_LTK_P256;
5708                         break;
5709                 case MGMT_LTK_P256_DEBUG:
5710                         authenticated = 0x00;
5711                         type = SMP_LTK_P256_DEBUG;
5712                 default:
5713                         continue;
5714                 }
5715
5716                 hci_add_ltk(hdev, &key->addr.bdaddr, addr_type, type,
5717                             authenticated, key->val, key->enc_size, key->ediv,
5718                             key->rand);
5719         }
5720
5721         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 0,
5722                            NULL, 0);
5723
5724         hci_dev_unlock(hdev);
5725
5726         return err;
5727 }
5728
5729 static int conn_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
5730 {
5731         struct hci_conn *conn = cmd->user_data;
5732         struct mgmt_rp_get_conn_info rp;
5733         int err;
5734
5735         memcpy(&rp.addr, cmd->param, sizeof(rp.addr));
5736
5737         if (status == MGMT_STATUS_SUCCESS) {
5738                 rp.rssi = conn->rssi;
5739                 rp.tx_power = conn->tx_power;
5740                 rp.max_tx_power = conn->max_tx_power;
5741         } else {
5742                 rp.rssi = HCI_RSSI_INVALID;
5743                 rp.tx_power = HCI_TX_POWER_INVALID;
5744                 rp.max_tx_power = HCI_TX_POWER_INVALID;
5745         }
5746
5747         err = mgmt_cmd_complete(cmd->sk, cmd->index, MGMT_OP_GET_CONN_INFO,
5748                                 status, &rp, sizeof(rp));
5749
5750         hci_conn_drop(conn);
5751         hci_conn_put(conn);
5752
5753         return err;
5754 }
5755
5756 static void conn_info_refresh_complete(struct hci_dev *hdev, u8 hci_status,
5757                                        u16 opcode)
5758 {
5759         struct hci_cp_read_rssi *cp;
5760         struct mgmt_pending_cmd *cmd;
5761         struct hci_conn *conn;
5762         u16 handle;
5763         u8 status;
5764
5765         BT_DBG("status 0x%02x", hci_status);
5766
5767         hci_dev_lock(hdev);
5768
5769         /* Commands sent in request are either Read RSSI or Read Transmit Power
5770          * Level so we check which one was last sent to retrieve connection
5771          * handle.  Both commands have handle as first parameter so it's safe to
5772          * cast data on the same command struct.
5773          *
5774          * First command sent is always Read RSSI and we fail only if it fails.
5775          * In other case we simply override error to indicate success as we
5776          * already remembered if TX power value is actually valid.
5777          */
5778         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_RSSI);
5779         if (!cp) {
5780                 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
5781                 status = MGMT_STATUS_SUCCESS;
5782         } else {
5783                 status = mgmt_status(hci_status);
5784         }
5785
5786         if (!cp) {
5787                 BT_ERR("invalid sent_cmd in conn_info response");
5788                 goto unlock;
5789         }
5790
5791         handle = __le16_to_cpu(cp->handle);
5792         conn = hci_conn_hash_lookup_handle(hdev, handle);
5793         if (!conn) {
5794                 BT_ERR("unknown handle (%d) in conn_info response", handle);
5795                 goto unlock;
5796         }
5797
5798         cmd = pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn);
5799         if (!cmd)
5800                 goto unlock;
5801
5802         cmd->cmd_complete(cmd, status);
5803         mgmt_pending_remove(cmd);
5804
5805 unlock:
5806         hci_dev_unlock(hdev);
5807 }
5808
5809 static int get_conn_info(struct sock *sk, struct hci_dev *hdev, void *data,
5810                          u16 len)
5811 {
5812         struct mgmt_cp_get_conn_info *cp = data;
5813         struct mgmt_rp_get_conn_info rp;
5814         struct hci_conn *conn;
5815         unsigned long conn_info_age;
5816         int err = 0;
5817
5818         BT_DBG("%s", hdev->name);
5819
5820         memset(&rp, 0, sizeof(rp));
5821         bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
5822         rp.addr.type = cp->addr.type;
5823
5824         if (!bdaddr_type_is_valid(cp->addr.type))
5825                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5826                                          MGMT_STATUS_INVALID_PARAMS,
5827                                          &rp, sizeof(rp));
5828
5829         hci_dev_lock(hdev);
5830
5831         if (!hdev_is_powered(hdev)) {
5832                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5833                                         MGMT_STATUS_NOT_POWERED, &rp,
5834                                         sizeof(rp));
5835                 goto unlock;
5836         }
5837
5838         if (cp->addr.type == BDADDR_BREDR)
5839                 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
5840                                                &cp->addr.bdaddr);
5841         else
5842                 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr);
5843
5844         if (!conn || conn->state != BT_CONNECTED) {
5845                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5846                                         MGMT_STATUS_NOT_CONNECTED, &rp,
5847                                         sizeof(rp));
5848                 goto unlock;
5849         }
5850
5851         if (pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn)) {
5852                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5853                                         MGMT_STATUS_BUSY, &rp, sizeof(rp));
5854                 goto unlock;
5855         }
5856
5857         /* To avoid client trying to guess when to poll again for information we
5858          * calculate conn info age as random value between min/max set in hdev.
5859          */
5860         conn_info_age = hdev->conn_info_min_age +
5861                         prandom_u32_max(hdev->conn_info_max_age -
5862                                         hdev->conn_info_min_age);
5863
5864         /* Query controller to refresh cached values if they are too old or were
5865          * never read.
5866          */
5867         if (time_after(jiffies, conn->conn_info_timestamp +
5868                        msecs_to_jiffies(conn_info_age)) ||
5869             !conn->conn_info_timestamp) {
5870                 struct hci_request req;
5871                 struct hci_cp_read_tx_power req_txp_cp;
5872                 struct hci_cp_read_rssi req_rssi_cp;
5873                 struct mgmt_pending_cmd *cmd;
5874
5875                 hci_req_init(&req, hdev);
5876                 req_rssi_cp.handle = cpu_to_le16(conn->handle);
5877                 hci_req_add(&req, HCI_OP_READ_RSSI, sizeof(req_rssi_cp),
5878                             &req_rssi_cp);
5879
5880                 /* For LE links TX power does not change thus we don't need to
5881                  * query for it once value is known.
5882                  */
5883                 if (!bdaddr_type_is_le(cp->addr.type) ||
5884                     conn->tx_power == HCI_TX_POWER_INVALID) {
5885                         req_txp_cp.handle = cpu_to_le16(conn->handle);
5886                         req_txp_cp.type = 0x00;
5887                         hci_req_add(&req, HCI_OP_READ_TX_POWER,
5888                                     sizeof(req_txp_cp), &req_txp_cp);
5889                 }
5890
5891                 /* Max TX power needs to be read only once per connection */
5892                 if (conn->max_tx_power == HCI_TX_POWER_INVALID) {
5893                         req_txp_cp.handle = cpu_to_le16(conn->handle);
5894                         req_txp_cp.type = 0x01;
5895                         hci_req_add(&req, HCI_OP_READ_TX_POWER,
5896                                     sizeof(req_txp_cp), &req_txp_cp);
5897                 }
5898
5899                 err = hci_req_run(&req, conn_info_refresh_complete);
5900                 if (err < 0)
5901                         goto unlock;
5902
5903                 cmd = mgmt_pending_add(sk, MGMT_OP_GET_CONN_INFO, hdev,
5904                                        data, len);
5905                 if (!cmd) {
5906                         err = -ENOMEM;
5907                         goto unlock;
5908                 }
5909
5910                 hci_conn_hold(conn);
5911                 cmd->user_data = hci_conn_get(conn);
5912                 cmd->cmd_complete = conn_info_cmd_complete;
5913
5914                 conn->conn_info_timestamp = jiffies;
5915         } else {
5916                 /* Cache is valid, just reply with values cached in hci_conn */
5917                 rp.rssi = conn->rssi;
5918                 rp.tx_power = conn->tx_power;
5919                 rp.max_tx_power = conn->max_tx_power;
5920
5921                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5922                                         MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
5923         }
5924
5925 unlock:
5926         hci_dev_unlock(hdev);
5927         return err;
5928 }
5929
5930 static int clock_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
5931 {
5932         struct hci_conn *conn = cmd->user_data;
5933         struct mgmt_rp_get_clock_info rp;
5934         struct hci_dev *hdev;
5935         int err;
5936
5937         memset(&rp, 0, sizeof(rp));
5938         memcpy(&rp.addr, &cmd->param, sizeof(rp.addr));
5939
5940         if (status)
5941                 goto complete;
5942
5943         hdev = hci_dev_get(cmd->index);
5944         if (hdev) {
5945                 rp.local_clock = cpu_to_le32(hdev->clock);
5946                 hci_dev_put(hdev);
5947         }
5948
5949         if (conn) {
5950                 rp.piconet_clock = cpu_to_le32(conn->clock);
5951                 rp.accuracy = cpu_to_le16(conn->clock_accuracy);
5952         }
5953
5954 complete:
5955         err = mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, &rp,
5956                                 sizeof(rp));
5957
5958         if (conn) {
5959                 hci_conn_drop(conn);
5960                 hci_conn_put(conn);
5961         }
5962
5963         return err;
5964 }
5965
5966 static void get_clock_info_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5967 {
5968         struct hci_cp_read_clock *hci_cp;
5969         struct mgmt_pending_cmd *cmd;
5970         struct hci_conn *conn;
5971
5972         BT_DBG("%s status %u", hdev->name, status);
5973
5974         hci_dev_lock(hdev);
5975
5976         hci_cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
5977         if (!hci_cp)
5978                 goto unlock;
5979
5980         if (hci_cp->which) {
5981                 u16 handle = __le16_to_cpu(hci_cp->handle);
5982                 conn = hci_conn_hash_lookup_handle(hdev, handle);
5983         } else {
5984                 conn = NULL;
5985         }
5986
5987         cmd = pending_find_data(MGMT_OP_GET_CLOCK_INFO, hdev, conn);
5988         if (!cmd)
5989                 goto unlock;
5990
5991         cmd->cmd_complete(cmd, mgmt_status(status));
5992         mgmt_pending_remove(cmd);
5993
5994 unlock:
5995         hci_dev_unlock(hdev);
5996 }
5997
5998 static int get_clock_info(struct sock *sk, struct hci_dev *hdev, void *data,
5999                          u16 len)
6000 {
6001         struct mgmt_cp_get_clock_info *cp = data;
6002         struct mgmt_rp_get_clock_info rp;
6003         struct hci_cp_read_clock hci_cp;
6004         struct mgmt_pending_cmd *cmd;
6005         struct hci_request req;
6006         struct hci_conn *conn;
6007         int err;
6008
6009         BT_DBG("%s", hdev->name);
6010
6011         memset(&rp, 0, sizeof(rp));
6012         bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
6013         rp.addr.type = cp->addr.type;
6014
6015         if (cp->addr.type != BDADDR_BREDR)
6016                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO,
6017                                          MGMT_STATUS_INVALID_PARAMS,
6018                                          &rp, sizeof(rp));
6019
6020         hci_dev_lock(hdev);
6021
6022         if (!hdev_is_powered(hdev)) {
6023                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO,
6024                                         MGMT_STATUS_NOT_POWERED, &rp,
6025                                         sizeof(rp));
6026                 goto unlock;
6027         }
6028
6029         if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
6030                 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
6031                                                &cp->addr.bdaddr);
6032                 if (!conn || conn->state != BT_CONNECTED) {
6033                         err = mgmt_cmd_complete(sk, hdev->id,
6034                                                 MGMT_OP_GET_CLOCK_INFO,
6035                                                 MGMT_STATUS_NOT_CONNECTED,
6036                                                 &rp, sizeof(rp));
6037                         goto unlock;
6038                 }
6039         } else {
6040                 conn = NULL;
6041         }
6042
6043         cmd = mgmt_pending_add(sk, MGMT_OP_GET_CLOCK_INFO, hdev, data, len);
6044         if (!cmd) {
6045                 err = -ENOMEM;
6046                 goto unlock;
6047         }
6048
6049         cmd->cmd_complete = clock_info_cmd_complete;
6050
6051         hci_req_init(&req, hdev);
6052
6053         memset(&hci_cp, 0, sizeof(hci_cp));
6054         hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp);
6055
6056         if (conn) {
6057                 hci_conn_hold(conn);
6058                 cmd->user_data = hci_conn_get(conn);
6059
6060                 hci_cp.handle = cpu_to_le16(conn->handle);
6061                 hci_cp.which = 0x01; /* Piconet clock */
6062                 hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp);
6063         }
6064
6065         err = hci_req_run(&req, get_clock_info_complete);
6066         if (err < 0)
6067                 mgmt_pending_remove(cmd);
6068
6069 unlock:
6070         hci_dev_unlock(hdev);
6071         return err;
6072 }
6073
6074 static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type)
6075 {
6076         struct hci_conn *conn;
6077
6078         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr);
6079         if (!conn)
6080                 return false;
6081
6082         if (conn->dst_type != type)
6083                 return false;
6084
6085         if (conn->state != BT_CONNECTED)
6086                 return false;
6087
6088         return true;
6089 }
6090
6091 /* This function requires the caller holds hdev->lock */
6092 static int hci_conn_params_set(struct hci_request *req, bdaddr_t *addr,
6093                                u8 addr_type, u8 auto_connect)
6094 {
6095         struct hci_dev *hdev = req->hdev;
6096         struct hci_conn_params *params;
6097
6098         params = hci_conn_params_add(hdev, addr, addr_type);
6099         if (!params)
6100                 return -EIO;
6101
6102         if (params->auto_connect == auto_connect)
6103                 return 0;
6104
6105         list_del_init(&params->action);
6106
6107         switch (auto_connect) {
6108         case HCI_AUTO_CONN_DISABLED:
6109         case HCI_AUTO_CONN_LINK_LOSS:
6110                 __hci_update_background_scan(req);
6111                 break;
6112         case HCI_AUTO_CONN_REPORT:
6113                 list_add(&params->action, &hdev->pend_le_reports);
6114                 __hci_update_background_scan(req);
6115                 break;
6116         case HCI_AUTO_CONN_DIRECT:
6117         case HCI_AUTO_CONN_ALWAYS:
6118                 if (!is_connected(hdev, addr, addr_type)) {
6119                         list_add(&params->action, &hdev->pend_le_conns);
6120                         __hci_update_background_scan(req);
6121                 }
6122                 break;
6123         }
6124
6125         params->auto_connect = auto_connect;
6126
6127         BT_DBG("addr %pMR (type %u) auto_connect %u", addr, addr_type,
6128                auto_connect);
6129
6130         return 0;
6131 }
6132
6133 static void device_added(struct sock *sk, struct hci_dev *hdev,
6134                          bdaddr_t *bdaddr, u8 type, u8 action)
6135 {
6136         struct mgmt_ev_device_added ev;
6137
6138         bacpy(&ev.addr.bdaddr, bdaddr);
6139         ev.addr.type = type;
6140         ev.action = action;
6141
6142         mgmt_event(MGMT_EV_DEVICE_ADDED, hdev, &ev, sizeof(ev), sk);
6143 }
6144
6145 static void add_device_complete(struct hci_dev *hdev, u8 status, u16 opcode)
6146 {
6147         struct mgmt_pending_cmd *cmd;
6148
6149         BT_DBG("status 0x%02x", status);
6150
6151         hci_dev_lock(hdev);
6152
6153         cmd = pending_find(MGMT_OP_ADD_DEVICE, hdev);
6154         if (!cmd)
6155                 goto unlock;
6156
6157         cmd->cmd_complete(cmd, mgmt_status(status));
6158         mgmt_pending_remove(cmd);
6159
6160 unlock:
6161         hci_dev_unlock(hdev);
6162 }
6163
6164 static int add_device(struct sock *sk, struct hci_dev *hdev,
6165                       void *data, u16 len)
6166 {
6167         struct mgmt_cp_add_device *cp = data;
6168         struct mgmt_pending_cmd *cmd;
6169         struct hci_request req;
6170         u8 auto_conn, addr_type;
6171         int err;
6172
6173         BT_DBG("%s", hdev->name);
6174
6175         if (!bdaddr_type_is_valid(cp->addr.type) ||
6176             !bacmp(&cp->addr.bdaddr, BDADDR_ANY))
6177                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,
6178                                          MGMT_STATUS_INVALID_PARAMS,
6179                                          &cp->addr, sizeof(cp->addr));
6180
6181         if (cp->action != 0x00 && cp->action != 0x01 && cp->action != 0x02)
6182                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,
6183                                          MGMT_STATUS_INVALID_PARAMS,
6184                                          &cp->addr, sizeof(cp->addr));
6185
6186         hci_req_init(&req, hdev);
6187
6188         hci_dev_lock(hdev);
6189
6190         cmd = mgmt_pending_add(sk, MGMT_OP_ADD_DEVICE, hdev, data, len);
6191         if (!cmd) {
6192                 err = -ENOMEM;
6193                 goto unlock;
6194         }
6195
6196         cmd->cmd_complete = addr_cmd_complete;
6197
6198         if (cp->addr.type == BDADDR_BREDR) {
6199                 /* Only incoming connections action is supported for now */
6200                 if (cp->action != 0x01) {
6201                         err = cmd->cmd_complete(cmd,
6202                                                 MGMT_STATUS_INVALID_PARAMS);
6203                         mgmt_pending_remove(cmd);
6204                         goto unlock;
6205                 }
6206
6207                 err = hci_bdaddr_list_add(&hdev->whitelist, &cp->addr.bdaddr,
6208                                           cp->addr.type);
6209                 if (err)
6210                         goto unlock;
6211
6212                 __hci_update_page_scan(&req);
6213
6214                 goto added;
6215         }
6216
6217         if (cp->addr.type == BDADDR_LE_PUBLIC)
6218                 addr_type = ADDR_LE_DEV_PUBLIC;
6219         else
6220                 addr_type = ADDR_LE_DEV_RANDOM;
6221
6222         if (cp->action == 0x02)
6223                 auto_conn = HCI_AUTO_CONN_ALWAYS;
6224         else if (cp->action == 0x01)
6225                 auto_conn = HCI_AUTO_CONN_DIRECT;
6226         else
6227                 auto_conn = HCI_AUTO_CONN_REPORT;
6228
6229         /* If the connection parameters don't exist for this device,
6230          * they will be created and configured with defaults.
6231          */
6232         if (hci_conn_params_set(&req, &cp->addr.bdaddr, addr_type,
6233                                 auto_conn) < 0) {
6234                 err = cmd->cmd_complete(cmd, MGMT_STATUS_FAILED);
6235                 mgmt_pending_remove(cmd);
6236                 goto unlock;
6237         }
6238
6239 added:
6240         device_added(sk, hdev, &cp->addr.bdaddr, cp->addr.type, cp->action);
6241
6242         err = hci_req_run(&req, add_device_complete);
6243         if (err < 0) {
6244                 /* ENODATA means no HCI commands were needed (e.g. if
6245                  * the adapter is powered off).
6246                  */
6247                 if (err == -ENODATA)
6248                         err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS);
6249                 mgmt_pending_remove(cmd);
6250         }
6251
6252 unlock:
6253         hci_dev_unlock(hdev);
6254         return err;
6255 }
6256
6257 static void device_removed(struct sock *sk, struct hci_dev *hdev,
6258                            bdaddr_t *bdaddr, u8 type)
6259 {
6260         struct mgmt_ev_device_removed ev;
6261
6262         bacpy(&ev.addr.bdaddr, bdaddr);
6263         ev.addr.type = type;
6264
6265         mgmt_event(MGMT_EV_DEVICE_REMOVED, hdev, &ev, sizeof(ev), sk);
6266 }
6267
6268 static void remove_device_complete(struct hci_dev *hdev, u8 status, u16 opcode)
6269 {
6270         struct mgmt_pending_cmd *cmd;
6271
6272         BT_DBG("status 0x%02x", status);
6273
6274         hci_dev_lock(hdev);
6275
6276         cmd = pending_find(MGMT_OP_REMOVE_DEVICE, hdev);
6277         if (!cmd)
6278                 goto unlock;
6279
6280         cmd->cmd_complete(cmd, mgmt_status(status));
6281         mgmt_pending_remove(cmd);
6282
6283 unlock:
6284         hci_dev_unlock(hdev);
6285 }
6286
6287 static int remove_device(struct sock *sk, struct hci_dev *hdev,
6288                          void *data, u16 len)
6289 {
6290         struct mgmt_cp_remove_device *cp = data;
6291         struct mgmt_pending_cmd *cmd;
6292         struct hci_request req;
6293         int err;
6294
6295         BT_DBG("%s", hdev->name);
6296
6297         hci_req_init(&req, hdev);
6298
6299         hci_dev_lock(hdev);
6300
6301         cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_DEVICE, hdev, data, len);
6302         if (!cmd) {
6303                 err = -ENOMEM;
6304                 goto unlock;
6305         }
6306
6307         cmd->cmd_complete = addr_cmd_complete;
6308
6309         if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
6310                 struct hci_conn_params *params;
6311                 u8 addr_type;
6312
6313                 if (!bdaddr_type_is_valid(cp->addr.type)) {
6314                         err = cmd->cmd_complete(cmd,
6315                                                 MGMT_STATUS_INVALID_PARAMS);
6316                         mgmt_pending_remove(cmd);
6317                         goto unlock;
6318                 }
6319
6320                 if (cp->addr.type == BDADDR_BREDR) {
6321                         err = hci_bdaddr_list_del(&hdev->whitelist,
6322                                                   &cp->addr.bdaddr,
6323                                                   cp->addr.type);
6324                         if (err) {
6325                                 err = cmd->cmd_complete(cmd,
6326                                                         MGMT_STATUS_INVALID_PARAMS);
6327                                 mgmt_pending_remove(cmd);
6328                                 goto unlock;
6329                         }
6330
6331                         __hci_update_page_scan(&req);
6332
6333                         device_removed(sk, hdev, &cp->addr.bdaddr,
6334                                        cp->addr.type);
6335                         goto complete;
6336                 }
6337
6338                 if (cp->addr.type == BDADDR_LE_PUBLIC)
6339                         addr_type = ADDR_LE_DEV_PUBLIC;
6340                 else
6341                         addr_type = ADDR_LE_DEV_RANDOM;
6342
6343                 params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr,
6344                                                 addr_type);
6345                 if (!params) {
6346                         err = cmd->cmd_complete(cmd,
6347                                                 MGMT_STATUS_INVALID_PARAMS);
6348                         mgmt_pending_remove(cmd);
6349                         goto unlock;
6350                 }
6351
6352                 if (params->auto_connect == HCI_AUTO_CONN_DISABLED) {
6353                         err = cmd->cmd_complete(cmd,
6354                                                 MGMT_STATUS_INVALID_PARAMS);
6355                         mgmt_pending_remove(cmd);
6356                         goto unlock;
6357                 }
6358
6359                 list_del(&params->action);
6360                 list_del(&params->list);
6361                 kfree(params);
6362                 __hci_update_background_scan(&req);
6363
6364                 device_removed(sk, hdev, &cp->addr.bdaddr, cp->addr.type);
6365         } else {
6366                 struct hci_conn_params *p, *tmp;
6367                 struct bdaddr_list *b, *btmp;
6368
6369                 if (cp->addr.type) {
6370                         err = cmd->cmd_complete(cmd,
6371                                                 MGMT_STATUS_INVALID_PARAMS);
6372                         mgmt_pending_remove(cmd);
6373                         goto unlock;
6374                 }
6375
6376                 list_for_each_entry_safe(b, btmp, &hdev->whitelist, list) {
6377                         device_removed(sk, hdev, &b->bdaddr, b->bdaddr_type);
6378                         list_del(&b->list);
6379                         kfree(b);
6380                 }
6381
6382                 __hci_update_page_scan(&req);
6383
6384                 list_for_each_entry_safe(p, tmp, &hdev->le_conn_params, list) {
6385                         if (p->auto_connect == HCI_AUTO_CONN_DISABLED)
6386                                 continue;
6387                         device_removed(sk, hdev, &p->addr, p->addr_type);
6388                         list_del(&p->action);
6389                         list_del(&p->list);
6390                         kfree(p);
6391                 }
6392
6393                 BT_DBG("All LE connection parameters were removed");
6394
6395                 __hci_update_background_scan(&req);
6396         }
6397
6398 complete:
6399         err = hci_req_run(&req, remove_device_complete);
6400         if (err < 0) {
6401                 /* ENODATA means no HCI commands were needed (e.g. if
6402                  * the adapter is powered off).
6403                  */
6404                 if (err == -ENODATA)
6405                         err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS);
6406                 mgmt_pending_remove(cmd);
6407         }
6408
6409 unlock:
6410         hci_dev_unlock(hdev);
6411         return err;
6412 }
6413
6414 static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data,
6415                            u16 len)
6416 {
6417         struct mgmt_cp_load_conn_param *cp = data;
6418         const u16 max_param_count = ((U16_MAX - sizeof(*cp)) /
6419                                      sizeof(struct mgmt_conn_param));
6420         u16 param_count, expected_len;
6421         int i;
6422
6423         if (!lmp_le_capable(hdev))
6424                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6425                                        MGMT_STATUS_NOT_SUPPORTED);
6426
6427         param_count = __le16_to_cpu(cp->param_count);
6428         if (param_count > max_param_count) {
6429                 BT_ERR("load_conn_param: too big param_count value %u",
6430                        param_count);
6431                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6432                                        MGMT_STATUS_INVALID_PARAMS);
6433         }
6434
6435         expected_len = sizeof(*cp) + param_count *
6436                                         sizeof(struct mgmt_conn_param);
6437         if (expected_len != len) {
6438                 BT_ERR("load_conn_param: expected %u bytes, got %u bytes",
6439                        expected_len, len);
6440                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6441                                        MGMT_STATUS_INVALID_PARAMS);
6442         }
6443
6444         BT_DBG("%s param_count %u", hdev->name, param_count);
6445
6446         hci_dev_lock(hdev);
6447
6448         hci_conn_params_clear_disabled(hdev);
6449
6450         for (i = 0; i < param_count; i++) {
6451                 struct mgmt_conn_param *param = &cp->params[i];
6452                 struct hci_conn_params *hci_param;
6453                 u16 min, max, latency, timeout;
6454                 u8 addr_type;
6455
6456                 BT_DBG("Adding %pMR (type %u)", &param->addr.bdaddr,
6457                        param->addr.type);
6458
6459                 if (param->addr.type == BDADDR_LE_PUBLIC) {
6460                         addr_type = ADDR_LE_DEV_PUBLIC;
6461                 } else if (param->addr.type == BDADDR_LE_RANDOM) {
6462                         addr_type = ADDR_LE_DEV_RANDOM;
6463                 } else {
6464                         BT_ERR("Ignoring invalid connection parameters");
6465                         continue;
6466                 }
6467
6468                 min = le16_to_cpu(param->min_interval);
6469                 max = le16_to_cpu(param->max_interval);
6470                 latency = le16_to_cpu(param->latency);
6471                 timeout = le16_to_cpu(param->timeout);
6472
6473                 BT_DBG("min 0x%04x max 0x%04x latency 0x%04x timeout 0x%04x",
6474                        min, max, latency, timeout);
6475
6476                 if (hci_check_conn_params(min, max, latency, timeout) < 0) {
6477                         BT_ERR("Ignoring invalid connection parameters");
6478                         continue;
6479                 }
6480
6481                 hci_param = hci_conn_params_add(hdev, &param->addr.bdaddr,
6482                                                 addr_type);
6483                 if (!hci_param) {
6484                         BT_ERR("Failed to add connection parameters");
6485                         continue;
6486                 }
6487
6488                 hci_param->conn_min_interval = min;
6489                 hci_param->conn_max_interval = max;
6490                 hci_param->conn_latency = latency;
6491                 hci_param->supervision_timeout = timeout;
6492         }
6493
6494         hci_dev_unlock(hdev);
6495
6496         return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 0,
6497                                  NULL, 0);
6498 }
6499
6500 static int set_external_config(struct sock *sk, struct hci_dev *hdev,
6501                                void *data, u16 len)
6502 {
6503         struct mgmt_cp_set_external_config *cp = data;
6504         bool changed;
6505         int err;
6506
6507         BT_DBG("%s", hdev->name);
6508
6509         if (hdev_is_powered(hdev))
6510                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6511                                        MGMT_STATUS_REJECTED);
6512
6513         if (cp->config != 0x00 && cp->config != 0x01)
6514                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6515                                          MGMT_STATUS_INVALID_PARAMS);
6516
6517         if (!test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))
6518                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6519                                        MGMT_STATUS_NOT_SUPPORTED);
6520
6521         hci_dev_lock(hdev);
6522
6523         if (cp->config)
6524                 changed = !hci_dev_test_and_set_flag(hdev, HCI_EXT_CONFIGURED);
6525         else
6526                 changed = hci_dev_test_and_clear_flag(hdev, HCI_EXT_CONFIGURED);
6527
6528         err = send_options_rsp(sk, MGMT_OP_SET_EXTERNAL_CONFIG, hdev);
6529         if (err < 0)
6530                 goto unlock;
6531
6532         if (!changed)
6533                 goto unlock;
6534
6535         err = new_options(hdev, sk);
6536
6537         if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) == is_configured(hdev)) {
6538                 mgmt_index_removed(hdev);
6539
6540                 if (hci_dev_test_and_change_flag(hdev, HCI_UNCONFIGURED)) {
6541                         hci_dev_set_flag(hdev, HCI_CONFIG);
6542                         hci_dev_set_flag(hdev, HCI_AUTO_OFF);
6543
6544                         queue_work(hdev->req_workqueue, &hdev->power_on);
6545                 } else {
6546                         set_bit(HCI_RAW, &hdev->flags);
6547                         mgmt_index_added(hdev);
6548                 }
6549         }
6550
6551 unlock:
6552         hci_dev_unlock(hdev);
6553         return err;
6554 }
6555
6556 static int set_public_address(struct sock *sk, struct hci_dev *hdev,
6557                               void *data, u16 len)
6558 {
6559         struct mgmt_cp_set_public_address *cp = data;
6560         bool changed;
6561         int err;
6562
6563         BT_DBG("%s", hdev->name);
6564
6565         if (hdev_is_powered(hdev))
6566                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6567                                        MGMT_STATUS_REJECTED);
6568
6569         if (!bacmp(&cp->bdaddr, BDADDR_ANY))
6570                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6571                                        MGMT_STATUS_INVALID_PARAMS);
6572
6573         if (!hdev->set_bdaddr)
6574                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6575                                        MGMT_STATUS_NOT_SUPPORTED);
6576
6577         hci_dev_lock(hdev);
6578
6579         changed = !!bacmp(&hdev->public_addr, &cp->bdaddr);
6580         bacpy(&hdev->public_addr, &cp->bdaddr);
6581
6582         err = send_options_rsp(sk, MGMT_OP_SET_PUBLIC_ADDRESS, hdev);
6583         if (err < 0)
6584                 goto unlock;
6585
6586         if (!changed)
6587                 goto unlock;
6588
6589         if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
6590                 err = new_options(hdev, sk);
6591
6592         if (is_configured(hdev)) {
6593                 mgmt_index_removed(hdev);
6594
6595                 hci_dev_clear_flag(hdev, HCI_UNCONFIGURED);
6596
6597                 hci_dev_set_flag(hdev, HCI_CONFIG);
6598                 hci_dev_set_flag(hdev, HCI_AUTO_OFF);
6599
6600                 queue_work(hdev->req_workqueue, &hdev->power_on);
6601         }
6602
6603 unlock:
6604         hci_dev_unlock(hdev);
6605         return err;
6606 }
6607
6608 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
6609                                   u8 data_len)
6610 {
6611         eir[eir_len++] = sizeof(type) + data_len;
6612         eir[eir_len++] = type;
6613         memcpy(&eir[eir_len], data, data_len);
6614         eir_len += data_len;
6615
6616         return eir_len;
6617 }
6618
6619 static void read_local_oob_ext_data_complete(struct hci_dev *hdev, u8 status,
6620                                              u16 opcode, struct sk_buff *skb)
6621 {
6622         const struct mgmt_cp_read_local_oob_ext_data *mgmt_cp;
6623         struct mgmt_rp_read_local_oob_ext_data *mgmt_rp;
6624         u8 *h192, *r192, *h256, *r256;
6625         struct mgmt_pending_cmd *cmd;
6626         u16 eir_len;
6627         int err;
6628
6629         BT_DBG("%s status %u", hdev->name, status);
6630
6631         cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev);
6632         if (!cmd)
6633                 return;
6634
6635         mgmt_cp = cmd->param;
6636
6637         if (status) {
6638                 status = mgmt_status(status);
6639                 eir_len = 0;
6640
6641                 h192 = NULL;
6642                 r192 = NULL;
6643                 h256 = NULL;
6644                 r256 = NULL;
6645         } else if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) {
6646                 struct hci_rp_read_local_oob_data *rp;
6647
6648                 if (skb->len != sizeof(*rp)) {
6649                         status = MGMT_STATUS_FAILED;
6650                         eir_len = 0;
6651                 } else {
6652                         status = MGMT_STATUS_SUCCESS;
6653                         rp = (void *)skb->data;
6654
6655                         eir_len = 5 + 18 + 18;
6656                         h192 = rp->hash;
6657                         r192 = rp->rand;
6658                         h256 = NULL;
6659                         r256 = NULL;
6660                 }
6661         } else {
6662                 struct hci_rp_read_local_oob_ext_data *rp;
6663
6664                 if (skb->len != sizeof(*rp)) {
6665                         status = MGMT_STATUS_FAILED;
6666                         eir_len = 0;
6667                 } else {
6668                         status = MGMT_STATUS_SUCCESS;
6669                         rp = (void *)skb->data;
6670
6671                         if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
6672                                 eir_len = 5 + 18 + 18;
6673                                 h192 = NULL;
6674                                 r192 = NULL;
6675                         } else {
6676                                 eir_len = 5 + 18 + 18 + 18 + 18;
6677                                 h192 = rp->hash192;
6678                                 r192 = rp->rand192;
6679                         }
6680
6681                         h256 = rp->hash256;
6682                         r256 = rp->rand256;
6683                 }
6684         }
6685
6686         mgmt_rp = kmalloc(sizeof(*mgmt_rp) + eir_len, GFP_KERNEL);
6687         if (!mgmt_rp)
6688                 goto done;
6689
6690         if (status)
6691                 goto send_rsp;
6692
6693         eir_len = eir_append_data(mgmt_rp->eir, 0, EIR_CLASS_OF_DEV,
6694                                   hdev->dev_class, 3);
6695
6696         if (h192 && r192) {
6697                 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6698                                           EIR_SSP_HASH_C192, h192, 16);
6699                 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6700                                           EIR_SSP_RAND_R192, r192, 16);
6701         }
6702
6703         if (h256 && r256) {
6704                 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6705                                           EIR_SSP_HASH_C256, h256, 16);
6706                 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6707                                           EIR_SSP_RAND_R256, r256, 16);
6708         }
6709
6710 send_rsp:
6711         mgmt_rp->type = mgmt_cp->type;
6712         mgmt_rp->eir_len = cpu_to_le16(eir_len);
6713
6714         err = mgmt_cmd_complete(cmd->sk, hdev->id,
6715                                 MGMT_OP_READ_LOCAL_OOB_EXT_DATA, status,
6716                                 mgmt_rp, sizeof(*mgmt_rp) + eir_len);
6717         if (err < 0 || status)
6718                 goto done;
6719
6720         hci_sock_set_flag(cmd->sk, HCI_MGMT_OOB_DATA_EVENTS);
6721
6722         err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev,
6723                                  mgmt_rp, sizeof(*mgmt_rp) + eir_len,
6724                                  HCI_MGMT_OOB_DATA_EVENTS, cmd->sk);
6725 done:
6726         kfree(mgmt_rp);
6727         mgmt_pending_remove(cmd);
6728 }
6729
6730 static int read_local_ssp_oob_req(struct hci_dev *hdev, struct sock *sk,
6731                                   struct mgmt_cp_read_local_oob_ext_data *cp)
6732 {
6733         struct mgmt_pending_cmd *cmd;
6734         struct hci_request req;
6735         int err;
6736
6737         cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev,
6738                                cp, sizeof(*cp));
6739         if (!cmd)
6740                 return -ENOMEM;
6741
6742         hci_req_init(&req, hdev);
6743
6744         if (bredr_sc_enabled(hdev))
6745                 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL);
6746         else
6747                 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL);
6748
6749         err = hci_req_run_skb(&req, read_local_oob_ext_data_complete);
6750         if (err < 0) {
6751                 mgmt_pending_remove(cmd);
6752                 return err;
6753         }
6754
6755         return 0;
6756 }
6757
6758 static int read_local_oob_ext_data(struct sock *sk, struct hci_dev *hdev,
6759                                    void *data, u16 data_len)
6760 {
6761         struct mgmt_cp_read_local_oob_ext_data *cp = data;
6762         struct mgmt_rp_read_local_oob_ext_data *rp;
6763         size_t rp_len;
6764         u16 eir_len;
6765         u8 status, flags, role, addr[7], hash[16], rand[16];
6766         int err;
6767
6768         BT_DBG("%s", hdev->name);
6769
6770         if (hdev_is_powered(hdev)) {
6771                 switch (cp->type) {
6772                 case BIT(BDADDR_BREDR):
6773                         status = mgmt_bredr_support(hdev);
6774                         if (status)
6775                                 eir_len = 0;
6776                         else
6777                                 eir_len = 5;
6778                         break;
6779                 case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)):
6780                         status = mgmt_le_support(hdev);
6781                         if (status)
6782                                 eir_len = 0;
6783                         else
6784                                 eir_len = 9 + 3 + 18 + 18 + 3;
6785                         break;
6786                 default:
6787                         status = MGMT_STATUS_INVALID_PARAMS;
6788                         eir_len = 0;
6789                         break;
6790                 }
6791         } else {
6792                 status = MGMT_STATUS_NOT_POWERED;
6793                 eir_len = 0;
6794         }
6795
6796         rp_len = sizeof(*rp) + eir_len;
6797         rp = kmalloc(rp_len, GFP_ATOMIC);
6798         if (!rp)
6799                 return -ENOMEM;
6800
6801         if (status)
6802                 goto complete;
6803
6804         hci_dev_lock(hdev);
6805
6806         eir_len = 0;
6807         switch (cp->type) {
6808         case BIT(BDADDR_BREDR):
6809                 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
6810                         err = read_local_ssp_oob_req(hdev, sk, cp);
6811                         hci_dev_unlock(hdev);
6812                         if (!err)
6813                                 goto done;
6814
6815                         status = MGMT_STATUS_FAILED;
6816                         goto complete;
6817                 } else {
6818                         eir_len = eir_append_data(rp->eir, eir_len,
6819                                                   EIR_CLASS_OF_DEV,
6820                                                   hdev->dev_class, 3);
6821                 }
6822                 break;
6823         case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)):
6824                 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
6825                     smp_generate_oob(hdev, hash, rand) < 0) {
6826                         hci_dev_unlock(hdev);
6827                         status = MGMT_STATUS_FAILED;
6828                         goto complete;
6829                 }
6830
6831                 /* This should return the active RPA, but since the RPA
6832                  * is only programmed on demand, it is really hard to fill
6833                  * this in at the moment. For now disallow retrieving
6834                  * local out-of-band data when privacy is in use.
6835                  *
6836                  * Returning the identity address will not help here since
6837                  * pairing happens before the identity resolving key is
6838                  * known and thus the connection establishment happens
6839                  * based on the RPA and not the identity address.
6840                  */
6841                 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
6842                         hci_dev_unlock(hdev);
6843                         status = MGMT_STATUS_REJECTED;
6844                         goto complete;
6845                 }
6846
6847                 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
6848                    !bacmp(&hdev->bdaddr, BDADDR_ANY) ||
6849                    (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
6850                     bacmp(&hdev->static_addr, BDADDR_ANY))) {
6851                         memcpy(addr, &hdev->static_addr, 6);
6852                         addr[6] = 0x01;
6853                 } else {
6854                         memcpy(addr, &hdev->bdaddr, 6);
6855                         addr[6] = 0x00;
6856                 }
6857
6858                 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_BDADDR,
6859                                           addr, sizeof(addr));
6860
6861                 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
6862                         role = 0x02;
6863                 else
6864                         role = 0x01;
6865
6866                 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_ROLE,
6867                                           &role, sizeof(role));
6868
6869                 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED)) {
6870                         eir_len = eir_append_data(rp->eir, eir_len,
6871                                                   EIR_LE_SC_CONFIRM,
6872                                                   hash, sizeof(hash));
6873
6874                         eir_len = eir_append_data(rp->eir, eir_len,
6875                                                   EIR_LE_SC_RANDOM,
6876                                                   rand, sizeof(rand));
6877                 }
6878
6879                 flags = get_adv_discov_flags(hdev);
6880
6881                 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
6882                         flags |= LE_AD_NO_BREDR;
6883
6884                 eir_len = eir_append_data(rp->eir, eir_len, EIR_FLAGS,
6885                                           &flags, sizeof(flags));
6886                 break;
6887         }
6888
6889         hci_dev_unlock(hdev);
6890
6891         hci_sock_set_flag(sk, HCI_MGMT_OOB_DATA_EVENTS);
6892
6893         status = MGMT_STATUS_SUCCESS;
6894
6895 complete:
6896         rp->type = cp->type;
6897         rp->eir_len = cpu_to_le16(eir_len);
6898
6899         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_EXT_DATA,
6900                                 status, rp, sizeof(*rp) + eir_len);
6901         if (err < 0 || status)
6902                 goto done;
6903
6904         err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev,
6905                                  rp, sizeof(*rp) + eir_len,
6906                                  HCI_MGMT_OOB_DATA_EVENTS, sk);
6907
6908 done:
6909         kfree(rp);
6910
6911         return err;
6912 }
6913
6914 static u32 get_supported_adv_flags(struct hci_dev *hdev)
6915 {
6916         u32 flags = 0;
6917
6918         flags |= MGMT_ADV_FLAG_CONNECTABLE;
6919         flags |= MGMT_ADV_FLAG_DISCOV;
6920         flags |= MGMT_ADV_FLAG_LIMITED_DISCOV;
6921         flags |= MGMT_ADV_FLAG_MANAGED_FLAGS;
6922
6923         if (hdev->adv_tx_power != HCI_TX_POWER_INVALID)
6924                 flags |= MGMT_ADV_FLAG_TX_POWER;
6925
6926         return flags;
6927 }
6928
6929 static int read_adv_features(struct sock *sk, struct hci_dev *hdev,
6930                              void *data, u16 data_len)
6931 {
6932         struct mgmt_rp_read_adv_features *rp;
6933         size_t rp_len;
6934         int err, i;
6935         bool instance;
6936         struct adv_info *adv_instance;
6937         u32 supported_flags;
6938
6939         BT_DBG("%s", hdev->name);
6940
6941         if (!lmp_le_capable(hdev))
6942                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES,
6943                                        MGMT_STATUS_REJECTED);
6944
6945         hci_dev_lock(hdev);
6946
6947         rp_len = sizeof(*rp);
6948
6949         instance = hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE);
6950         if (instance)
6951                 rp_len += hdev->adv_instance_cnt;
6952
6953         rp = kmalloc(rp_len, GFP_ATOMIC);
6954         if (!rp) {
6955                 hci_dev_unlock(hdev);
6956                 return -ENOMEM;
6957         }
6958
6959         supported_flags = get_supported_adv_flags(hdev);
6960
6961         rp->supported_flags = cpu_to_le32(supported_flags);
6962         rp->max_adv_data_len = HCI_MAX_AD_LENGTH;
6963         rp->max_scan_rsp_len = HCI_MAX_AD_LENGTH;
6964         rp->max_instances = HCI_MAX_ADV_INSTANCES;
6965
6966         if (instance) {
6967                 i = 0;
6968                 list_for_each_entry(adv_instance, &hdev->adv_instances, list) {
6969                         if (i >= hdev->adv_instance_cnt)
6970                                 break;
6971
6972                         rp->instance[i] = adv_instance->instance;
6973                         i++;
6974                 }
6975                 rp->num_instances = hdev->adv_instance_cnt;
6976         } else {
6977                 rp->num_instances = 0;
6978         }
6979
6980         hci_dev_unlock(hdev);
6981
6982         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES,
6983                                 MGMT_STATUS_SUCCESS, rp, rp_len);
6984
6985         kfree(rp);
6986
6987         return err;
6988 }
6989
6990 static bool tlv_data_is_valid(struct hci_dev *hdev, u32 adv_flags, u8 *data,
6991                               u8 len, bool is_adv_data)
6992 {
6993         u8 max_len = HCI_MAX_AD_LENGTH;
6994         int i, cur_len;
6995         bool flags_managed = false;
6996         bool tx_power_managed = false;
6997         u32 flags_params = MGMT_ADV_FLAG_DISCOV | MGMT_ADV_FLAG_LIMITED_DISCOV |
6998                            MGMT_ADV_FLAG_MANAGED_FLAGS;
6999
7000         if (is_adv_data && (adv_flags & flags_params)) {
7001                 flags_managed = true;
7002                 max_len -= 3;
7003         }
7004
7005         if (is_adv_data && (adv_flags & MGMT_ADV_FLAG_TX_POWER)) {
7006                 tx_power_managed = true;
7007                 max_len -= 3;
7008         }
7009
7010         if (len > max_len)
7011                 return false;
7012
7013         /* Make sure that the data is correctly formatted. */
7014         for (i = 0, cur_len = 0; i < len; i += (cur_len + 1)) {
7015                 cur_len = data[i];
7016
7017                 if (flags_managed && data[i + 1] == EIR_FLAGS)
7018                         return false;
7019
7020                 if (tx_power_managed && data[i + 1] == EIR_TX_POWER)
7021                         return false;
7022
7023                 /* If the current field length would exceed the total data
7024                  * length, then it's invalid.
7025                  */
7026                 if (i + cur_len >= len)
7027                         return false;
7028         }
7029
7030         return true;
7031 }
7032
7033 static void add_advertising_complete(struct hci_dev *hdev, u8 status,
7034                                      u16 opcode)
7035 {
7036         struct mgmt_pending_cmd *cmd;
7037         struct mgmt_cp_add_advertising *cp;
7038         struct mgmt_rp_add_advertising rp;
7039         struct adv_info *adv_instance, *n;
7040         u8 instance;
7041
7042         BT_DBG("status %d", status);
7043
7044         hci_dev_lock(hdev);
7045
7046         cmd = pending_find(MGMT_OP_ADD_ADVERTISING, hdev);
7047
7048         if (status)
7049                 hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE);
7050
7051         list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) {
7052                 if (!adv_instance->pending)
7053                         continue;
7054
7055                 if (!status) {
7056                         adv_instance->pending = false;
7057                         continue;
7058                 }
7059
7060                 instance = adv_instance->instance;
7061
7062                 if (hdev->cur_adv_instance == instance)
7063                         cancel_adv_timeout(hdev);
7064
7065                 hci_remove_adv_instance(hdev, instance);
7066                 advertising_removed(cmd ? cmd->sk : NULL, hdev, instance);
7067         }
7068
7069         if (!cmd)
7070                 goto unlock;
7071
7072         cp = cmd->param;
7073         rp.instance = cp->instance;
7074
7075         if (status)
7076                 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode,
7077                                 mgmt_status(status));
7078         else
7079                 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode,
7080                                   mgmt_status(status), &rp, sizeof(rp));
7081
7082         mgmt_pending_remove(cmd);
7083
7084 unlock:
7085         hci_dev_unlock(hdev);
7086 }
7087
7088 void mgmt_adv_timeout_expired(struct hci_dev *hdev)
7089 {
7090         u8 instance;
7091         struct hci_request req;
7092
7093         hdev->adv_instance_timeout = 0;
7094
7095         instance = get_current_adv_instance(hdev);
7096         if (instance == 0x00)
7097                 return;
7098
7099         hci_dev_lock(hdev);
7100         hci_req_init(&req, hdev);
7101
7102         clear_adv_instance(hdev, &req, instance, false);
7103
7104         if (list_empty(&hdev->adv_instances))
7105                 disable_advertising(&req);
7106
7107         if (!skb_queue_empty(&req.cmd_q))
7108                 hci_req_run(&req, NULL);
7109
7110         hci_dev_unlock(hdev);
7111 }
7112
7113 static int add_advertising(struct sock *sk, struct hci_dev *hdev,
7114                            void *data, u16 data_len)
7115 {
7116         struct mgmt_cp_add_advertising *cp = data;
7117         struct mgmt_rp_add_advertising rp;
7118         u32 flags;
7119         u32 supported_flags;
7120         u8 status;
7121         u16 timeout, duration;
7122         unsigned int prev_instance_cnt = hdev->adv_instance_cnt;
7123         u8 schedule_instance = 0;
7124         struct adv_info *next_instance;
7125         int err;
7126         struct mgmt_pending_cmd *cmd;
7127         struct hci_request req;
7128
7129         BT_DBG("%s", hdev->name);
7130
7131         status = mgmt_le_support(hdev);
7132         if (status)
7133                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7134                                        status);
7135
7136         flags = __le32_to_cpu(cp->flags);
7137         timeout = __le16_to_cpu(cp->timeout);
7138         duration = __le16_to_cpu(cp->duration);
7139
7140         /* The current implementation only supports a subset of the specified
7141          * flags.
7142          */
7143         supported_flags = get_supported_adv_flags(hdev);
7144         if (flags & ~supported_flags)
7145                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7146                                        MGMT_STATUS_INVALID_PARAMS);
7147
7148         hci_dev_lock(hdev);
7149
7150         if (timeout && !hdev_is_powered(hdev)) {
7151                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7152                                       MGMT_STATUS_REJECTED);
7153                 goto unlock;
7154         }
7155
7156         if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) ||
7157             pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) ||
7158             pending_find(MGMT_OP_SET_LE, hdev)) {
7159                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7160                                       MGMT_STATUS_BUSY);
7161                 goto unlock;
7162         }
7163
7164         if (!tlv_data_is_valid(hdev, flags, cp->data, cp->adv_data_len, true) ||
7165             !tlv_data_is_valid(hdev, flags, cp->data + cp->adv_data_len,
7166                                cp->scan_rsp_len, false)) {
7167                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7168                                       MGMT_STATUS_INVALID_PARAMS);
7169                 goto unlock;
7170         }
7171
7172         err = hci_add_adv_instance(hdev, cp->instance, flags,
7173                                    cp->adv_data_len, cp->data,
7174                                    cp->scan_rsp_len,
7175                                    cp->data + cp->adv_data_len,
7176                                    timeout, duration);
7177         if (err < 0) {
7178                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7179                                       MGMT_STATUS_FAILED);
7180                 goto unlock;
7181         }
7182
7183         /* Only trigger an advertising added event if a new instance was
7184          * actually added.
7185          */
7186         if (hdev->adv_instance_cnt > prev_instance_cnt)
7187                 advertising_added(sk, hdev, cp->instance);
7188
7189         hci_dev_set_flag(hdev, HCI_ADVERTISING_INSTANCE);
7190
7191         if (hdev->cur_adv_instance == cp->instance) {
7192                 /* If the currently advertised instance is being changed then
7193                  * cancel the current advertising and schedule the next
7194                  * instance. If there is only one instance then the overridden
7195                  * advertising data will be visible right away.
7196                  */
7197                 cancel_adv_timeout(hdev);
7198
7199                 next_instance = hci_get_next_instance(hdev, cp->instance);
7200                 if (next_instance)
7201                         schedule_instance = next_instance->instance;
7202         } else if (!hdev->adv_instance_timeout) {
7203                 /* Immediately advertise the new instance if no other
7204                  * instance is currently being advertised.
7205                  */
7206                 schedule_instance = cp->instance;
7207         }
7208
7209         /* If the HCI_ADVERTISING flag is set or the device isn't powered or
7210          * there is no instance to be advertised then we have no HCI
7211          * communication to make. Simply return.
7212          */
7213         if (!hdev_is_powered(hdev) ||
7214             hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
7215             !schedule_instance) {
7216                 rp.instance = cp->instance;
7217                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7218                                         MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
7219                 goto unlock;
7220         }
7221
7222         /* We're good to go, update advertising data, parameters, and start
7223          * advertising.
7224          */
7225         cmd = mgmt_pending_add(sk, MGMT_OP_ADD_ADVERTISING, hdev, data,
7226                                data_len);
7227         if (!cmd) {
7228                 err = -ENOMEM;
7229                 goto unlock;
7230         }
7231
7232         hci_req_init(&req, hdev);
7233
7234         err = schedule_adv_instance(&req, schedule_instance, true);
7235
7236         if (!err)
7237                 err = hci_req_run(&req, add_advertising_complete);
7238
7239         if (err < 0)
7240                 mgmt_pending_remove(cmd);
7241
7242 unlock:
7243         hci_dev_unlock(hdev);
7244
7245         return err;
7246 }
7247
7248 static void remove_advertising_complete(struct hci_dev *hdev, u8 status,
7249                                         u16 opcode)
7250 {
7251         struct mgmt_pending_cmd *cmd;
7252         struct mgmt_cp_remove_advertising *cp;
7253         struct mgmt_rp_remove_advertising rp;
7254
7255         BT_DBG("status %d", status);
7256
7257         hci_dev_lock(hdev);
7258
7259         /* A failure status here only means that we failed to disable
7260          * advertising. Otherwise, the advertising instance has been removed,
7261          * so report success.
7262          */
7263         cmd = pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev);
7264         if (!cmd)
7265                 goto unlock;
7266
7267         cp = cmd->param;
7268         rp.instance = cp->instance;
7269
7270         mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, MGMT_STATUS_SUCCESS,
7271                           &rp, sizeof(rp));
7272         mgmt_pending_remove(cmd);
7273
7274 unlock:
7275         hci_dev_unlock(hdev);
7276 }
7277
7278 static int remove_advertising(struct sock *sk, struct hci_dev *hdev,
7279                               void *data, u16 data_len)
7280 {
7281         struct mgmt_cp_remove_advertising *cp = data;
7282         struct mgmt_rp_remove_advertising rp;
7283         struct mgmt_pending_cmd *cmd;
7284         struct hci_request req;
7285         int err;
7286
7287         BT_DBG("%s", hdev->name);
7288
7289         hci_dev_lock(hdev);
7290
7291         if (cp->instance && !hci_find_adv_instance(hdev, cp->instance)) {
7292                 err = mgmt_cmd_status(sk, hdev->id,
7293                                       MGMT_OP_REMOVE_ADVERTISING,
7294                                       MGMT_STATUS_INVALID_PARAMS);
7295                 goto unlock;
7296         }
7297
7298         if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) ||
7299             pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) ||
7300             pending_find(MGMT_OP_SET_LE, hdev)) {
7301                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING,
7302                                       MGMT_STATUS_BUSY);
7303                 goto unlock;
7304         }
7305
7306         if (!hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) {
7307                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING,
7308                                       MGMT_STATUS_INVALID_PARAMS);
7309                 goto unlock;
7310         }
7311
7312         hci_req_init(&req, hdev);
7313
7314         clear_adv_instance(hdev, &req, cp->instance, true);
7315
7316         if (list_empty(&hdev->adv_instances))
7317                 disable_advertising(&req);
7318
7319         /* If no HCI commands have been collected so far or the HCI_ADVERTISING
7320          * flag is set or the device isn't powered then we have no HCI
7321          * communication to make. Simply return.
7322          */
7323         if (skb_queue_empty(&req.cmd_q) ||
7324             !hdev_is_powered(hdev) ||
7325             hci_dev_test_flag(hdev, HCI_ADVERTISING)) {
7326                 rp.instance = cp->instance;
7327                 err = mgmt_cmd_complete(sk, hdev->id,
7328                                         MGMT_OP_REMOVE_ADVERTISING,
7329                                         MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
7330                 goto unlock;
7331         }
7332
7333         cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_ADVERTISING, hdev, data,
7334                                data_len);
7335         if (!cmd) {
7336                 err = -ENOMEM;
7337                 goto unlock;
7338         }
7339
7340         err = hci_req_run(&req, remove_advertising_complete);
7341         if (err < 0)
7342                 mgmt_pending_remove(cmd);
7343
7344 unlock:
7345         hci_dev_unlock(hdev);
7346
7347         return err;
7348 }
7349
7350 static const struct hci_mgmt_handler mgmt_handlers[] = {
7351         { NULL }, /* 0x0000 (no command) */
7352         { read_version,            MGMT_READ_VERSION_SIZE,
7353                                                 HCI_MGMT_NO_HDEV |
7354                                                 HCI_MGMT_UNTRUSTED },
7355         { read_commands,           MGMT_READ_COMMANDS_SIZE,
7356                                                 HCI_MGMT_NO_HDEV |
7357                                                 HCI_MGMT_UNTRUSTED },
7358         { read_index_list,         MGMT_READ_INDEX_LIST_SIZE,
7359                                                 HCI_MGMT_NO_HDEV |
7360                                                 HCI_MGMT_UNTRUSTED },
7361         { read_controller_info,    MGMT_READ_INFO_SIZE,
7362                                                 HCI_MGMT_UNTRUSTED },
7363         { set_powered,             MGMT_SETTING_SIZE },
7364         { set_discoverable,        MGMT_SET_DISCOVERABLE_SIZE },
7365         { set_connectable,         MGMT_SETTING_SIZE },
7366         { set_fast_connectable,    MGMT_SETTING_SIZE },
7367         { set_bondable,            MGMT_SETTING_SIZE },
7368         { set_link_security,       MGMT_SETTING_SIZE },
7369         { set_ssp,                 MGMT_SETTING_SIZE },
7370         { set_hs,                  MGMT_SETTING_SIZE },
7371         { set_le,                  MGMT_SETTING_SIZE },
7372         { set_dev_class,           MGMT_SET_DEV_CLASS_SIZE },
7373         { set_local_name,          MGMT_SET_LOCAL_NAME_SIZE },
7374         { add_uuid,                MGMT_ADD_UUID_SIZE },
7375         { remove_uuid,             MGMT_REMOVE_UUID_SIZE },
7376         { load_link_keys,          MGMT_LOAD_LINK_KEYS_SIZE,
7377                                                 HCI_MGMT_VAR_LEN },
7378         { load_long_term_keys,     MGMT_LOAD_LONG_TERM_KEYS_SIZE,
7379                                                 HCI_MGMT_VAR_LEN },
7380         { disconnect,              MGMT_DISCONNECT_SIZE },
7381         { get_connections,         MGMT_GET_CONNECTIONS_SIZE },
7382         { pin_code_reply,          MGMT_PIN_CODE_REPLY_SIZE },
7383         { pin_code_neg_reply,      MGMT_PIN_CODE_NEG_REPLY_SIZE },
7384         { set_io_capability,       MGMT_SET_IO_CAPABILITY_SIZE },
7385         { pair_device,             MGMT_PAIR_DEVICE_SIZE },
7386         { cancel_pair_device,      MGMT_CANCEL_PAIR_DEVICE_SIZE },
7387         { unpair_device,           MGMT_UNPAIR_DEVICE_SIZE },
7388         { user_confirm_reply,      MGMT_USER_CONFIRM_REPLY_SIZE },
7389         { user_confirm_neg_reply,  MGMT_USER_CONFIRM_NEG_REPLY_SIZE },
7390         { user_passkey_reply,      MGMT_USER_PASSKEY_REPLY_SIZE },
7391         { user_passkey_neg_reply,  MGMT_USER_PASSKEY_NEG_REPLY_SIZE },
7392         { read_local_oob_data,     MGMT_READ_LOCAL_OOB_DATA_SIZE },
7393         { add_remote_oob_data,     MGMT_ADD_REMOTE_OOB_DATA_SIZE,
7394                                                 HCI_MGMT_VAR_LEN },
7395         { remove_remote_oob_data,  MGMT_REMOVE_REMOTE_OOB_DATA_SIZE },
7396         { start_discovery,         MGMT_START_DISCOVERY_SIZE },
7397         { stop_discovery,          MGMT_STOP_DISCOVERY_SIZE },
7398         { confirm_name,            MGMT_CONFIRM_NAME_SIZE },
7399         { block_device,            MGMT_BLOCK_DEVICE_SIZE },
7400         { unblock_device,          MGMT_UNBLOCK_DEVICE_SIZE },
7401         { set_device_id,           MGMT_SET_DEVICE_ID_SIZE },
7402         { set_advertising,         MGMT_SETTING_SIZE },
7403         { set_bredr,               MGMT_SETTING_SIZE },
7404         { set_static_address,      MGMT_SET_STATIC_ADDRESS_SIZE },
7405         { set_scan_params,         MGMT_SET_SCAN_PARAMS_SIZE },
7406         { set_secure_conn,         MGMT_SETTING_SIZE },
7407         { set_debug_keys,          MGMT_SETTING_SIZE },
7408         { set_privacy,             MGMT_SET_PRIVACY_SIZE },
7409         { load_irks,               MGMT_LOAD_IRKS_SIZE,
7410                                                 HCI_MGMT_VAR_LEN },
7411         { get_conn_info,           MGMT_GET_CONN_INFO_SIZE },
7412         { get_clock_info,          MGMT_GET_CLOCK_INFO_SIZE },
7413         { add_device,              MGMT_ADD_DEVICE_SIZE },
7414         { remove_device,           MGMT_REMOVE_DEVICE_SIZE },
7415         { load_conn_param,         MGMT_LOAD_CONN_PARAM_SIZE,
7416                                                 HCI_MGMT_VAR_LEN },
7417         { read_unconf_index_list,  MGMT_READ_UNCONF_INDEX_LIST_SIZE,
7418                                                 HCI_MGMT_NO_HDEV |
7419                                                 HCI_MGMT_UNTRUSTED },
7420         { read_config_info,        MGMT_READ_CONFIG_INFO_SIZE,
7421                                                 HCI_MGMT_UNCONFIGURED |
7422                                                 HCI_MGMT_UNTRUSTED },
7423         { set_external_config,     MGMT_SET_EXTERNAL_CONFIG_SIZE,
7424                                                 HCI_MGMT_UNCONFIGURED },
7425         { set_public_address,      MGMT_SET_PUBLIC_ADDRESS_SIZE,
7426                                                 HCI_MGMT_UNCONFIGURED },
7427         { start_service_discovery, MGMT_START_SERVICE_DISCOVERY_SIZE,
7428                                                 HCI_MGMT_VAR_LEN },
7429         { read_local_oob_ext_data, MGMT_READ_LOCAL_OOB_EXT_DATA_SIZE },
7430         { read_ext_index_list,     MGMT_READ_EXT_INDEX_LIST_SIZE,
7431                                                 HCI_MGMT_NO_HDEV |
7432                                                 HCI_MGMT_UNTRUSTED },
7433         { read_adv_features,       MGMT_READ_ADV_FEATURES_SIZE },
7434         { add_advertising,         MGMT_ADD_ADVERTISING_SIZE,
7435                                                 HCI_MGMT_VAR_LEN },
7436         { remove_advertising,      MGMT_REMOVE_ADVERTISING_SIZE },
7437 };
7438
7439 void mgmt_index_added(struct hci_dev *hdev)
7440 {
7441         struct mgmt_ev_ext_index ev;
7442
7443         if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
7444                 return;
7445
7446         switch (hdev->dev_type) {
7447         case HCI_BREDR:
7448                 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
7449                         mgmt_index_event(MGMT_EV_UNCONF_INDEX_ADDED, hdev,
7450                                          NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS);
7451                         ev.type = 0x01;
7452                 } else {
7453                         mgmt_index_event(MGMT_EV_INDEX_ADDED, hdev, NULL, 0,
7454                                          HCI_MGMT_INDEX_EVENTS);
7455                         ev.type = 0x00;
7456                 }
7457                 break;
7458         case HCI_AMP:
7459                 ev.type = 0x02;
7460                 break;
7461         default:
7462                 return;
7463         }
7464
7465         ev.bus = hdev->bus;
7466
7467         mgmt_index_event(MGMT_EV_EXT_INDEX_ADDED, hdev, &ev, sizeof(ev),
7468                          HCI_MGMT_EXT_INDEX_EVENTS);
7469 }
7470
7471 void mgmt_index_removed(struct hci_dev *hdev)
7472 {
7473         struct mgmt_ev_ext_index ev;
7474         u8 status = MGMT_STATUS_INVALID_INDEX;
7475
7476         if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
7477                 return;
7478
7479         switch (hdev->dev_type) {
7480         case HCI_BREDR:
7481                 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status);
7482
7483                 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
7484                         mgmt_index_event(MGMT_EV_UNCONF_INDEX_REMOVED, hdev,
7485                                          NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS);
7486                         ev.type = 0x01;
7487                 } else {
7488                         mgmt_index_event(MGMT_EV_INDEX_REMOVED, hdev, NULL, 0,
7489                                          HCI_MGMT_INDEX_EVENTS);
7490                         ev.type = 0x00;
7491                 }
7492                 break;
7493         case HCI_AMP:
7494                 ev.type = 0x02;
7495                 break;
7496         default:
7497                 return;
7498         }
7499
7500         ev.bus = hdev->bus;
7501
7502         mgmt_index_event(MGMT_EV_EXT_INDEX_REMOVED, hdev, &ev, sizeof(ev),
7503                          HCI_MGMT_EXT_INDEX_EVENTS);
7504 }
7505
7506 /* This function requires the caller holds hdev->lock */
7507 static void restart_le_actions(struct hci_request *req)
7508 {
7509         struct hci_dev *hdev = req->hdev;
7510         struct hci_conn_params *p;
7511
7512         list_for_each_entry(p, &hdev->le_conn_params, list) {
7513                 /* Needed for AUTO_OFF case where might not "really"
7514                  * have been powered off.
7515                  */
7516                 list_del_init(&p->action);
7517
7518                 switch (p->auto_connect) {
7519                 case HCI_AUTO_CONN_DIRECT:
7520                 case HCI_AUTO_CONN_ALWAYS:
7521                         list_add(&p->action, &hdev->pend_le_conns);
7522                         break;
7523                 case HCI_AUTO_CONN_REPORT:
7524                         list_add(&p->action, &hdev->pend_le_reports);
7525                         break;
7526                 default:
7527                         break;
7528                 }
7529         }
7530
7531         __hci_update_background_scan(req);
7532 }
7533
7534 static void powered_complete(struct hci_dev *hdev, u8 status, u16 opcode)
7535 {
7536         struct cmd_lookup match = { NULL, hdev };
7537
7538         BT_DBG("status 0x%02x", status);
7539
7540         if (!status) {
7541                 /* Register the available SMP channels (BR/EDR and LE) only
7542                  * when successfully powering on the controller. This late
7543                  * registration is required so that LE SMP can clearly
7544                  * decide if the public address or static address is used.
7545                  */
7546                 smp_register(hdev);
7547         }
7548
7549         hci_dev_lock(hdev);
7550
7551         mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
7552
7553         new_settings(hdev, match.sk);
7554
7555         hci_dev_unlock(hdev);
7556
7557         if (match.sk)
7558                 sock_put(match.sk);
7559 }
7560
7561 static int powered_update_hci(struct hci_dev *hdev)
7562 {
7563         struct hci_request req;
7564         struct adv_info *adv_instance;
7565         u8 link_sec;
7566
7567         hci_req_init(&req, hdev);
7568
7569         if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
7570             !lmp_host_ssp_capable(hdev)) {
7571                 u8 mode = 0x01;
7572
7573                 hci_req_add(&req, HCI_OP_WRITE_SSP_MODE, sizeof(mode), &mode);
7574
7575                 if (bredr_sc_enabled(hdev) && !lmp_host_sc_capable(hdev)) {
7576                         u8 support = 0x01;
7577
7578                         hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT,
7579                                     sizeof(support), &support);
7580                 }
7581         }
7582
7583         if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
7584             lmp_bredr_capable(hdev)) {
7585                 struct hci_cp_write_le_host_supported cp;
7586
7587                 cp.le = 0x01;
7588                 cp.simul = 0x00;
7589
7590                 /* Check first if we already have the right
7591                  * host state (host features set)
7592                  */
7593                 if (cp.le != lmp_host_le_capable(hdev) ||
7594                     cp.simul != lmp_host_le_br_capable(hdev))
7595                         hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED,
7596                                     sizeof(cp), &cp);
7597         }
7598
7599         if (lmp_le_capable(hdev)) {
7600                 /* Make sure the controller has a good default for
7601                  * advertising data. This also applies to the case
7602                  * where BR/EDR was toggled during the AUTO_OFF phase.
7603                  */
7604                 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
7605                     (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
7606                      !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))) {
7607                         update_adv_data(&req);
7608                         update_scan_rsp_data(&req);
7609                 }
7610
7611                 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) &&
7612                     hdev->cur_adv_instance == 0x00 &&
7613                     !list_empty(&hdev->adv_instances)) {
7614                         adv_instance = list_first_entry(&hdev->adv_instances,
7615                                                         struct adv_info, list);
7616                         hdev->cur_adv_instance = adv_instance->instance;
7617                 }
7618
7619                 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
7620                         enable_advertising(&req);
7621                 else if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) &&
7622                          hdev->cur_adv_instance)
7623                         schedule_adv_instance(&req, hdev->cur_adv_instance,
7624                                               true);
7625
7626                 restart_le_actions(&req);
7627         }
7628
7629         link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY);
7630         if (link_sec != test_bit(HCI_AUTH, &hdev->flags))
7631                 hci_req_add(&req, HCI_OP_WRITE_AUTH_ENABLE,
7632                             sizeof(link_sec), &link_sec);
7633
7634         if (lmp_bredr_capable(hdev)) {
7635                 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE))
7636                         write_fast_connectable(&req, true);
7637                 else
7638                         write_fast_connectable(&req, false);
7639                 __hci_update_page_scan(&req);
7640                 update_class(&req);
7641                 update_name(&req);
7642                 update_eir(&req);
7643         }
7644
7645         return hci_req_run(&req, powered_complete);
7646 }
7647
7648 int mgmt_powered(struct hci_dev *hdev, u8 powered)
7649 {
7650         struct cmd_lookup match = { NULL, hdev };
7651         u8 status, zero_cod[] = { 0, 0, 0 };
7652         int err;
7653
7654         if (!hci_dev_test_flag(hdev, HCI_MGMT))
7655                 return 0;
7656
7657         if (powered) {
7658                 if (powered_update_hci(hdev) == 0)
7659                         return 0;
7660
7661                 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp,
7662                                      &match);
7663                 goto new_settings;
7664         }
7665
7666         mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
7667
7668         /* If the power off is because of hdev unregistration let
7669          * use the appropriate INVALID_INDEX status. Otherwise use
7670          * NOT_POWERED. We cover both scenarios here since later in
7671          * mgmt_index_removed() any hci_conn callbacks will have already
7672          * been triggered, potentially causing misleading DISCONNECTED
7673          * status responses.
7674          */
7675         if (hci_dev_test_flag(hdev, HCI_UNREGISTER))
7676                 status = MGMT_STATUS_INVALID_INDEX;
7677         else
7678                 status = MGMT_STATUS_NOT_POWERED;
7679
7680         mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status);
7681
7682         if (memcmp(hdev->dev_class, zero_cod, sizeof(zero_cod)) != 0)
7683                 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev,
7684                                    zero_cod, sizeof(zero_cod), NULL);
7685
7686 new_settings:
7687         err = new_settings(hdev, match.sk);
7688
7689         if (match.sk)
7690                 sock_put(match.sk);
7691
7692         return err;
7693 }
7694
7695 void mgmt_set_powered_failed(struct hci_dev *hdev, int err)
7696 {
7697         struct mgmt_pending_cmd *cmd;
7698         u8 status;
7699
7700         cmd = pending_find(MGMT_OP_SET_POWERED, hdev);
7701         if (!cmd)
7702                 return;
7703
7704         if (err == -ERFKILL)
7705                 status = MGMT_STATUS_RFKILLED;
7706         else
7707                 status = MGMT_STATUS_FAILED;
7708
7709         mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_POWERED, status);
7710
7711         mgmt_pending_remove(cmd);
7712 }
7713
7714 void mgmt_discoverable_timeout(struct hci_dev *hdev)
7715 {
7716         struct hci_request req;
7717
7718         hci_dev_lock(hdev);
7719
7720         /* When discoverable timeout triggers, then just make sure
7721          * the limited discoverable flag is cleared. Even in the case
7722          * of a timeout triggered from general discoverable, it is
7723          * safe to unconditionally clear the flag.
7724          */
7725         hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
7726         hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
7727
7728         hci_req_init(&req, hdev);
7729         if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
7730                 u8 scan = SCAN_PAGE;
7731                 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE,
7732                             sizeof(scan), &scan);
7733         }
7734         update_class(&req);
7735
7736         /* Advertising instances don't use the global discoverable setting, so
7737          * only update AD if advertising was enabled using Set Advertising.
7738          */
7739         if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
7740                 update_adv_data(&req);
7741
7742         hci_req_run(&req, NULL);
7743
7744         hdev->discov_timeout = 0;
7745
7746         new_settings(hdev, NULL);
7747
7748         hci_dev_unlock(hdev);
7749 }
7750
7751 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
7752                        bool persistent)
7753 {
7754         struct mgmt_ev_new_link_key ev;
7755
7756         memset(&ev, 0, sizeof(ev));
7757
7758         ev.store_hint = persistent;
7759         bacpy(&ev.key.addr.bdaddr, &key->bdaddr);
7760         ev.key.addr.type = BDADDR_BREDR;
7761         ev.key.type = key->type;
7762         memcpy(ev.key.val, key->val, HCI_LINK_KEY_SIZE);
7763         ev.key.pin_len = key->pin_len;
7764
7765         mgmt_event(MGMT_EV_NEW_LINK_KEY, hdev, &ev, sizeof(ev), NULL);
7766 }
7767
7768 static u8 mgmt_ltk_type(struct smp_ltk *ltk)
7769 {
7770         switch (ltk->type) {
7771         case SMP_LTK:
7772         case SMP_LTK_SLAVE:
7773                 if (ltk->authenticated)
7774                         return MGMT_LTK_AUTHENTICATED;
7775                 return MGMT_LTK_UNAUTHENTICATED;
7776         case SMP_LTK_P256:
7777                 if (ltk->authenticated)
7778                         return MGMT_LTK_P256_AUTH;
7779                 return MGMT_LTK_P256_UNAUTH;
7780         case SMP_LTK_P256_DEBUG:
7781                 return MGMT_LTK_P256_DEBUG;
7782         }
7783
7784         return MGMT_LTK_UNAUTHENTICATED;
7785 }
7786
7787 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent)
7788 {
7789         struct mgmt_ev_new_long_term_key ev;
7790
7791         memset(&ev, 0, sizeof(ev));
7792
7793         /* Devices using resolvable or non-resolvable random addresses
7794          * without providing an identity resolving key don't require
7795          * to store long term keys. Their addresses will change the
7796          * next time around.
7797          *
7798          * Only when a remote device provides an identity address
7799          * make sure the long term key is stored. If the remote
7800          * identity is known, the long term keys are internally
7801          * mapped to the identity address. So allow static random
7802          * and public addresses here.
7803          */
7804         if (key->bdaddr_type == ADDR_LE_DEV_RANDOM &&
7805             (key->bdaddr.b[5] & 0xc0) != 0xc0)
7806                 ev.store_hint = 0x00;
7807         else
7808                 ev.store_hint = persistent;
7809
7810         bacpy(&ev.key.addr.bdaddr, &key->bdaddr);
7811         ev.key.addr.type = link_to_bdaddr(LE_LINK, key->bdaddr_type);
7812         ev.key.type = mgmt_ltk_type(key);
7813         ev.key.enc_size = key->enc_size;
7814         ev.key.ediv = key->ediv;
7815         ev.key.rand = key->rand;
7816
7817         if (key->type == SMP_LTK)
7818                 ev.key.master = 1;
7819
7820         /* Make sure we copy only the significant bytes based on the
7821          * encryption key size, and set the rest of the value to zeroes.
7822          */
7823         memcpy(ev.key.val, key->val, key->enc_size);
7824         memset(ev.key.val + key->enc_size, 0,
7825                sizeof(ev.key.val) - key->enc_size);
7826
7827         mgmt_event(MGMT_EV_NEW_LONG_TERM_KEY, hdev, &ev, sizeof(ev), NULL);
7828 }
7829
7830 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk)
7831 {
7832         struct mgmt_ev_new_irk ev;
7833
7834         memset(&ev, 0, sizeof(ev));
7835
7836         /* For identity resolving keys from devices that are already
7837          * using a public address or static random address, do not
7838          * ask for storing this key. The identity resolving key really
7839          * is only mandatory for devices using resolvable random
7840          * addresses.
7841          *
7842          * Storing all identity resolving keys has the downside that
7843          * they will be also loaded on next boot of they system. More
7844          * identity resolving keys, means more time during scanning is
7845          * needed to actually resolve these addresses.
7846          */
7847         if (bacmp(&irk->rpa, BDADDR_ANY))
7848                 ev.store_hint = 0x01;
7849         else
7850                 ev.store_hint = 0x00;
7851
7852         bacpy(&ev.rpa, &irk->rpa);
7853         bacpy(&ev.irk.addr.bdaddr, &irk->bdaddr);
7854         ev.irk.addr.type = link_to_bdaddr(LE_LINK, irk->addr_type);
7855         memcpy(ev.irk.val, irk->val, sizeof(irk->val));
7856
7857         mgmt_event(MGMT_EV_NEW_IRK, hdev, &ev, sizeof(ev), NULL);
7858 }
7859
7860 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
7861                    bool persistent)
7862 {
7863         struct mgmt_ev_new_csrk ev;
7864
7865         memset(&ev, 0, sizeof(ev));
7866
7867         /* Devices using resolvable or non-resolvable random addresses
7868          * without providing an identity resolving key don't require
7869          * to store signature resolving keys. Their addresses will change
7870          * the next time around.
7871          *
7872          * Only when a remote device provides an identity address
7873          * make sure the signature resolving key is stored. So allow
7874          * static random and public addresses here.
7875          */
7876         if (csrk->bdaddr_type == ADDR_LE_DEV_RANDOM &&
7877             (csrk->bdaddr.b[5] & 0xc0) != 0xc0)
7878                 ev.store_hint = 0x00;
7879         else
7880                 ev.store_hint = persistent;
7881
7882         bacpy(&ev.key.addr.bdaddr, &csrk->bdaddr);
7883         ev.key.addr.type = link_to_bdaddr(LE_LINK, csrk->bdaddr_type);
7884         ev.key.type = csrk->type;
7885         memcpy(ev.key.val, csrk->val, sizeof(csrk->val));
7886
7887         mgmt_event(MGMT_EV_NEW_CSRK, hdev, &ev, sizeof(ev), NULL);
7888 }
7889
7890 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
7891                          u8 bdaddr_type, u8 store_hint, u16 min_interval,
7892                          u16 max_interval, u16 latency, u16 timeout)
7893 {
7894         struct mgmt_ev_new_conn_param ev;
7895
7896         if (!hci_is_identity_address(bdaddr, bdaddr_type))
7897                 return;
7898
7899         memset(&ev, 0, sizeof(ev));
7900         bacpy(&ev.addr.bdaddr, bdaddr);
7901         ev.addr.type = link_to_bdaddr(LE_LINK, bdaddr_type);
7902         ev.store_hint = store_hint;
7903         ev.min_interval = cpu_to_le16(min_interval);
7904         ev.max_interval = cpu_to_le16(max_interval);
7905         ev.latency = cpu_to_le16(latency);
7906         ev.timeout = cpu_to_le16(timeout);
7907
7908         mgmt_event(MGMT_EV_NEW_CONN_PARAM, hdev, &ev, sizeof(ev), NULL);
7909 }
7910
7911 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
7912                            u32 flags, u8 *name, u8 name_len)
7913 {
7914         char buf[512];
7915         struct mgmt_ev_device_connected *ev = (void *) buf;
7916         u16 eir_len = 0;
7917
7918         bacpy(&ev->addr.bdaddr, &conn->dst);
7919         ev->addr.type = link_to_bdaddr(conn->type, conn->dst_type);
7920
7921         ev->flags = __cpu_to_le32(flags);
7922
7923         /* We must ensure that the EIR Data fields are ordered and
7924          * unique. Keep it simple for now and avoid the problem by not
7925          * adding any BR/EDR data to the LE adv.
7926          */
7927         if (conn->le_adv_data_len > 0) {
7928                 memcpy(&ev->eir[eir_len],
7929                        conn->le_adv_data, conn->le_adv_data_len);
7930                 eir_len = conn->le_adv_data_len;
7931         } else {
7932                 if (name_len > 0)
7933                         eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE,
7934                                                   name, name_len);
7935
7936                 if (memcmp(conn->dev_class, "\0\0\0", 3) != 0)
7937                         eir_len = eir_append_data(ev->eir, eir_len,
7938                                                   EIR_CLASS_OF_DEV,
7939                                                   conn->dev_class, 3);
7940         }
7941
7942         ev->eir_len = cpu_to_le16(eir_len);
7943
7944         mgmt_event(MGMT_EV_DEVICE_CONNECTED, hdev, buf,
7945                     sizeof(*ev) + eir_len, NULL);
7946 }
7947
7948 static void disconnect_rsp(struct mgmt_pending_cmd *cmd, void *data)
7949 {
7950         struct sock **sk = data;
7951
7952         cmd->cmd_complete(cmd, 0);
7953
7954         *sk = cmd->sk;
7955         sock_hold(*sk);
7956
7957         mgmt_pending_remove(cmd);
7958 }
7959
7960 static void unpair_device_rsp(struct mgmt_pending_cmd *cmd, void *data)
7961 {
7962         struct hci_dev *hdev = data;
7963         struct mgmt_cp_unpair_device *cp = cmd->param;
7964
7965         device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, cmd->sk);
7966
7967         cmd->cmd_complete(cmd, 0);
7968         mgmt_pending_remove(cmd);
7969 }
7970
7971 bool mgmt_powering_down(struct hci_dev *hdev)
7972 {
7973         struct mgmt_pending_cmd *cmd;
7974         struct mgmt_mode *cp;
7975
7976         cmd = pending_find(MGMT_OP_SET_POWERED, hdev);
7977         if (!cmd)
7978                 return false;
7979
7980         cp = cmd->param;
7981         if (!cp->val)
7982                 return true;
7983
7984         return false;
7985 }
7986
7987 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
7988                               u8 link_type, u8 addr_type, u8 reason,
7989                               bool mgmt_connected)
7990 {
7991         struct mgmt_ev_device_disconnected ev;
7992         struct sock *sk = NULL;
7993
7994         /* The connection is still in hci_conn_hash so test for 1
7995          * instead of 0 to know if this is the last one.
7996          */
7997         if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) {
7998                 cancel_delayed_work(&hdev->power_off);
7999                 queue_work(hdev->req_workqueue, &hdev->power_off.work);
8000         }
8001
8002         if (!mgmt_connected)
8003                 return;
8004
8005         if (link_type != ACL_LINK && link_type != LE_LINK)
8006                 return;
8007
8008         mgmt_pending_foreach(MGMT_OP_DISCONNECT, hdev, disconnect_rsp, &sk);
8009
8010         bacpy(&ev.addr.bdaddr, bdaddr);
8011         ev.addr.type = link_to_bdaddr(link_type, addr_type);
8012         ev.reason = reason;
8013
8014         mgmt_event(MGMT_EV_DEVICE_DISCONNECTED, hdev, &ev, sizeof(ev), sk);
8015
8016         if (sk)
8017                 sock_put(sk);
8018
8019         mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp,
8020                              hdev);
8021 }
8022
8023 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
8024                             u8 link_type, u8 addr_type, u8 status)
8025 {
8026         u8 bdaddr_type = link_to_bdaddr(link_type, addr_type);
8027         struct mgmt_cp_disconnect *cp;
8028         struct mgmt_pending_cmd *cmd;
8029
8030         mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp,
8031                              hdev);
8032
8033         cmd = pending_find(MGMT_OP_DISCONNECT, hdev);
8034         if (!cmd)
8035                 return;
8036
8037         cp = cmd->param;
8038
8039         if (bacmp(bdaddr, &cp->addr.bdaddr))
8040                 return;
8041
8042         if (cp->addr.type != bdaddr_type)
8043                 return;
8044
8045         cmd->cmd_complete(cmd, mgmt_status(status));
8046         mgmt_pending_remove(cmd);
8047 }
8048
8049 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8050                          u8 addr_type, u8 status)
8051 {
8052         struct mgmt_ev_connect_failed ev;
8053
8054         /* The connection is still in hci_conn_hash so test for 1
8055          * instead of 0 to know if this is the last one.
8056          */
8057         if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) {
8058                 cancel_delayed_work(&hdev->power_off);
8059                 queue_work(hdev->req_workqueue, &hdev->power_off.work);
8060         }
8061
8062         bacpy(&ev.addr.bdaddr, bdaddr);
8063         ev.addr.type = link_to_bdaddr(link_type, addr_type);
8064         ev.status = mgmt_status(status);
8065
8066         mgmt_event(MGMT_EV_CONNECT_FAILED, hdev, &ev, sizeof(ev), NULL);
8067 }
8068
8069 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure)
8070 {
8071         struct mgmt_ev_pin_code_request ev;
8072
8073         bacpy(&ev.addr.bdaddr, bdaddr);
8074         ev.addr.type = BDADDR_BREDR;
8075         ev.secure = secure;
8076
8077         mgmt_event(MGMT_EV_PIN_CODE_REQUEST, hdev, &ev, sizeof(ev), NULL);
8078 }
8079
8080 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8081                                   u8 status)
8082 {
8083         struct mgmt_pending_cmd *cmd;
8084
8085         cmd = pending_find(MGMT_OP_PIN_CODE_REPLY, hdev);
8086         if (!cmd)
8087                 return;
8088
8089         cmd->cmd_complete(cmd, mgmt_status(status));
8090         mgmt_pending_remove(cmd);
8091 }
8092
8093 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8094                                       u8 status)
8095 {
8096         struct mgmt_pending_cmd *cmd;
8097
8098         cmd = pending_find(MGMT_OP_PIN_CODE_NEG_REPLY, hdev);
8099         if (!cmd)
8100                 return;
8101
8102         cmd->cmd_complete(cmd, mgmt_status(status));
8103         mgmt_pending_remove(cmd);
8104 }
8105
8106 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
8107                               u8 link_type, u8 addr_type, u32 value,
8108                               u8 confirm_hint)
8109 {
8110         struct mgmt_ev_user_confirm_request ev;
8111
8112         BT_DBG("%s", hdev->name);
8113
8114         bacpy(&ev.addr.bdaddr, bdaddr);
8115         ev.addr.type = link_to_bdaddr(link_type, addr_type);
8116         ev.confirm_hint = confirm_hint;
8117         ev.value = cpu_to_le32(value);
8118
8119         return mgmt_event(MGMT_EV_USER_CONFIRM_REQUEST, hdev, &ev, sizeof(ev),
8120                           NULL);
8121 }
8122
8123 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
8124                               u8 link_type, u8 addr_type)
8125 {
8126         struct mgmt_ev_user_passkey_request ev;
8127
8128         BT_DBG("%s", hdev->name);
8129
8130         bacpy(&ev.addr.bdaddr, bdaddr);
8131         ev.addr.type = link_to_bdaddr(link_type, addr_type);
8132
8133         return mgmt_event(MGMT_EV_USER_PASSKEY_REQUEST, hdev, &ev, sizeof(ev),
8134                           NULL);
8135 }
8136
8137 static int user_pairing_resp_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8138                                       u8 link_type, u8 addr_type, u8 status,
8139                                       u8 opcode)
8140 {
8141         struct mgmt_pending_cmd *cmd;
8142
8143         cmd = pending_find(opcode, hdev);
8144         if (!cmd)
8145                 return -ENOENT;
8146
8147         cmd->cmd_complete(cmd, mgmt_status(status));
8148         mgmt_pending_remove(cmd);
8149
8150         return 0;
8151 }
8152
8153 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8154                                      u8 link_type, u8 addr_type, u8 status)
8155 {
8156         return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8157                                           status, MGMT_OP_USER_CONFIRM_REPLY);
8158 }
8159
8160 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8161                                          u8 link_type, u8 addr_type, u8 status)
8162 {
8163         return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8164                                           status,
8165                                           MGMT_OP_USER_CONFIRM_NEG_REPLY);
8166 }
8167
8168 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8169                                      u8 link_type, u8 addr_type, u8 status)
8170 {
8171         return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8172                                           status, MGMT_OP_USER_PASSKEY_REPLY);
8173 }
8174
8175 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8176                                          u8 link_type, u8 addr_type, u8 status)
8177 {
8178         return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8179                                           status,
8180                                           MGMT_OP_USER_PASSKEY_NEG_REPLY);
8181 }
8182
8183 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
8184                              u8 link_type, u8 addr_type, u32 passkey,
8185                              u8 entered)
8186 {
8187         struct mgmt_ev_passkey_notify ev;
8188
8189         BT_DBG("%s", hdev->name);
8190
8191         bacpy(&ev.addr.bdaddr, bdaddr);
8192         ev.addr.type = link_to_bdaddr(link_type, addr_type);
8193         ev.passkey = __cpu_to_le32(passkey);
8194         ev.entered = entered;
8195
8196         return mgmt_event(MGMT_EV_PASSKEY_NOTIFY, hdev, &ev, sizeof(ev), NULL);
8197 }
8198
8199 void mgmt_auth_failed(struct hci_conn *conn, u8 hci_status)
8200 {
8201         struct mgmt_ev_auth_failed ev;
8202         struct mgmt_pending_cmd *cmd;
8203         u8 status = mgmt_status(hci_status);
8204
8205         bacpy(&ev.addr.bdaddr, &conn->dst);
8206         ev.addr.type = link_to_bdaddr(conn->type, conn->dst_type);
8207         ev.status = status;
8208
8209         cmd = find_pairing(conn);
8210
8211         mgmt_event(MGMT_EV_AUTH_FAILED, conn->hdev, &ev, sizeof(ev),
8212                     cmd ? cmd->sk : NULL);
8213
8214         if (cmd) {
8215                 cmd->cmd_complete(cmd, status);
8216                 mgmt_pending_remove(cmd);
8217         }
8218 }
8219
8220 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status)
8221 {
8222         struct cmd_lookup match = { NULL, hdev };
8223         bool changed;
8224
8225         if (status) {
8226                 u8 mgmt_err = mgmt_status(status);
8227                 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev,
8228                                      cmd_status_rsp, &mgmt_err);
8229                 return;
8230         }
8231
8232         if (test_bit(HCI_AUTH, &hdev->flags))
8233                 changed = !hci_dev_test_and_set_flag(hdev, HCI_LINK_SECURITY);
8234         else
8235                 changed = hci_dev_test_and_clear_flag(hdev, HCI_LINK_SECURITY);
8236
8237         mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev, settings_rsp,
8238                              &match);
8239
8240         if (changed)
8241                 new_settings(hdev, match.sk);
8242
8243         if (match.sk)
8244                 sock_put(match.sk);
8245 }
8246
8247 static void clear_eir(struct hci_request *req)
8248 {
8249         struct hci_dev *hdev = req->hdev;
8250         struct hci_cp_write_eir cp;
8251
8252         if (!lmp_ext_inq_capable(hdev))
8253                 return;
8254
8255         memset(hdev->eir, 0, sizeof(hdev->eir));
8256
8257         memset(&cp, 0, sizeof(cp));
8258
8259         hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
8260 }
8261
8262 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status)
8263 {
8264         struct cmd_lookup match = { NULL, hdev };
8265         struct hci_request req;
8266         bool changed = false;
8267
8268         if (status) {
8269                 u8 mgmt_err = mgmt_status(status);
8270
8271                 if (enable && hci_dev_test_and_clear_flag(hdev,
8272                                                           HCI_SSP_ENABLED)) {
8273                         hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
8274                         new_settings(hdev, NULL);
8275                 }
8276
8277                 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, cmd_status_rsp,
8278                                      &mgmt_err);
8279                 return;
8280         }
8281
8282         if (enable) {
8283                 changed = !hci_dev_test_and_set_flag(hdev, HCI_SSP_ENABLED);
8284         } else {
8285                 changed = hci_dev_test_and_clear_flag(hdev, HCI_SSP_ENABLED);
8286                 if (!changed)
8287                         changed = hci_dev_test_and_clear_flag(hdev,
8288                                                               HCI_HS_ENABLED);
8289                 else
8290                         hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
8291         }
8292
8293         mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, settings_rsp, &match);
8294
8295         if (changed)
8296                 new_settings(hdev, match.sk);
8297
8298         if (match.sk)
8299                 sock_put(match.sk);
8300
8301         hci_req_init(&req, hdev);
8302
8303         if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
8304                 if (hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS))
8305                         hci_req_add(&req, HCI_OP_WRITE_SSP_DEBUG_MODE,
8306                                     sizeof(enable), &enable);
8307                 update_eir(&req);
8308         } else {
8309                 clear_eir(&req);
8310         }
8311
8312         hci_req_run(&req, NULL);
8313 }
8314
8315 static void sk_lookup(struct mgmt_pending_cmd *cmd, void *data)
8316 {
8317         struct cmd_lookup *match = data;
8318
8319         if (match->sk == NULL) {
8320                 match->sk = cmd->sk;
8321                 sock_hold(match->sk);
8322         }
8323 }
8324
8325 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
8326                                     u8 status)
8327 {
8328         struct cmd_lookup match = { NULL, hdev, mgmt_status(status) };
8329
8330         mgmt_pending_foreach(MGMT_OP_SET_DEV_CLASS, hdev, sk_lookup, &match);
8331         mgmt_pending_foreach(MGMT_OP_ADD_UUID, hdev, sk_lookup, &match);
8332         mgmt_pending_foreach(MGMT_OP_REMOVE_UUID, hdev, sk_lookup, &match);
8333
8334         if (!status)
8335                 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev,
8336                                    dev_class, 3, NULL);
8337
8338         if (match.sk)
8339                 sock_put(match.sk);
8340 }
8341
8342 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status)
8343 {
8344         struct mgmt_cp_set_local_name ev;
8345         struct mgmt_pending_cmd *cmd;
8346
8347         if (status)
8348                 return;
8349
8350         memset(&ev, 0, sizeof(ev));
8351         memcpy(ev.name, name, HCI_MAX_NAME_LENGTH);
8352         memcpy(ev.short_name, hdev->short_name, HCI_MAX_SHORT_NAME_LENGTH);
8353
8354         cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev);
8355         if (!cmd) {
8356                 memcpy(hdev->dev_name, name, sizeof(hdev->dev_name));
8357
8358                 /* If this is a HCI command related to powering on the
8359                  * HCI dev don't send any mgmt signals.
8360                  */
8361                 if (pending_find(MGMT_OP_SET_POWERED, hdev))
8362                         return;
8363         }
8364
8365         mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, &ev, sizeof(ev),
8366                            cmd ? cmd->sk : NULL);
8367 }
8368
8369 static inline bool has_uuid(u8 *uuid, u16 uuid_count, u8 (*uuids)[16])
8370 {
8371         int i;
8372
8373         for (i = 0; i < uuid_count; i++) {
8374                 if (!memcmp(uuid, uuids[i], 16))
8375                         return true;
8376         }
8377
8378         return false;
8379 }
8380
8381 static bool eir_has_uuids(u8 *eir, u16 eir_len, u16 uuid_count, u8 (*uuids)[16])
8382 {
8383         u16 parsed = 0;
8384
8385         while (parsed < eir_len) {
8386                 u8 field_len = eir[0];
8387                 u8 uuid[16];
8388                 int i;
8389
8390                 if (field_len == 0)
8391                         break;
8392
8393                 if (eir_len - parsed < field_len + 1)
8394                         break;
8395
8396                 switch (eir[1]) {
8397                 case EIR_UUID16_ALL:
8398                 case EIR_UUID16_SOME:
8399                         for (i = 0; i + 3 <= field_len; i += 2) {
8400                                 memcpy(uuid, bluetooth_base_uuid, 16);
8401                                 uuid[13] = eir[i + 3];
8402                                 uuid[12] = eir[i + 2];
8403                                 if (has_uuid(uuid, uuid_count, uuids))
8404                                         return true;
8405                         }
8406                         break;
8407                 case EIR_UUID32_ALL:
8408                 case EIR_UUID32_SOME:
8409                         for (i = 0; i + 5 <= field_len; i += 4) {
8410                                 memcpy(uuid, bluetooth_base_uuid, 16);
8411                                 uuid[15] = eir[i + 5];
8412                                 uuid[14] = eir[i + 4];
8413                                 uuid[13] = eir[i + 3];
8414                                 uuid[12] = eir[i + 2];
8415                                 if (has_uuid(uuid, uuid_count, uuids))
8416                                         return true;
8417                         }
8418                         break;
8419                 case EIR_UUID128_ALL:
8420                 case EIR_UUID128_SOME:
8421                         for (i = 0; i + 17 <= field_len; i += 16) {
8422                                 memcpy(uuid, eir + i + 2, 16);
8423                                 if (has_uuid(uuid, uuid_count, uuids))
8424                                         return true;
8425                         }
8426                         break;
8427                 }
8428
8429                 parsed += field_len + 1;
8430                 eir += field_len + 1;
8431         }
8432
8433         return false;
8434 }
8435
8436 static void restart_le_scan(struct hci_dev *hdev)
8437 {
8438         /* If controller is not scanning we are done. */
8439         if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
8440                 return;
8441
8442         if (time_after(jiffies + DISCOV_LE_RESTART_DELAY,
8443                        hdev->discovery.scan_start +
8444                        hdev->discovery.scan_duration))
8445                 return;
8446
8447         queue_delayed_work(hdev->workqueue, &hdev->le_scan_restart,
8448                            DISCOV_LE_RESTART_DELAY);
8449 }
8450
8451 static bool is_filter_match(struct hci_dev *hdev, s8 rssi, u8 *eir,
8452                             u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len)
8453 {
8454         /* If a RSSI threshold has been specified, and
8455          * HCI_QUIRK_STRICT_DUPLICATE_FILTER is not set, then all results with
8456          * a RSSI smaller than the RSSI threshold will be dropped. If the quirk
8457          * is set, let it through for further processing, as we might need to
8458          * restart the scan.
8459          *
8460          * For BR/EDR devices (pre 1.2) providing no RSSI during inquiry,
8461          * the results are also dropped.
8462          */
8463         if (hdev->discovery.rssi != HCI_RSSI_INVALID &&
8464             (rssi == HCI_RSSI_INVALID ||
8465             (rssi < hdev->discovery.rssi &&
8466              !test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks))))
8467                 return  false;
8468
8469         if (hdev->discovery.uuid_count != 0) {
8470                 /* If a list of UUIDs is provided in filter, results with no
8471                  * matching UUID should be dropped.
8472                  */
8473                 if (!eir_has_uuids(eir, eir_len, hdev->discovery.uuid_count,
8474                                    hdev->discovery.uuids) &&
8475                     !eir_has_uuids(scan_rsp, scan_rsp_len,
8476                                    hdev->discovery.uuid_count,
8477                                    hdev->discovery.uuids))
8478                         return false;
8479         }
8480
8481         /* If duplicate filtering does not report RSSI changes, then restart
8482          * scanning to ensure updated result with updated RSSI values.
8483          */
8484         if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks)) {
8485                 restart_le_scan(hdev);
8486
8487                 /* Validate RSSI value against the RSSI threshold once more. */
8488                 if (hdev->discovery.rssi != HCI_RSSI_INVALID &&
8489                     rssi < hdev->discovery.rssi)
8490                         return false;
8491         }
8492
8493         return true;
8494 }
8495
8496 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8497                        u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
8498                        u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len)
8499 {
8500         char buf[512];
8501         struct mgmt_ev_device_found *ev = (void *)buf;
8502         size_t ev_size;
8503
8504         /* Don't send events for a non-kernel initiated discovery. With
8505          * LE one exception is if we have pend_le_reports > 0 in which
8506          * case we're doing passive scanning and want these events.
8507          */
8508         if (!hci_discovery_active(hdev)) {
8509                 if (link_type == ACL_LINK)
8510                         return;
8511                 if (link_type == LE_LINK && list_empty(&hdev->pend_le_reports))
8512                         return;
8513         }
8514
8515         if (hdev->discovery.result_filtering) {
8516                 /* We are using service discovery */
8517                 if (!is_filter_match(hdev, rssi, eir, eir_len, scan_rsp,
8518                                      scan_rsp_len))
8519                         return;
8520         }
8521
8522         /* Make sure that the buffer is big enough. The 5 extra bytes
8523          * are for the potential CoD field.
8524          */
8525         if (sizeof(*ev) + eir_len + scan_rsp_len + 5 > sizeof(buf))
8526                 return;
8527
8528         memset(buf, 0, sizeof(buf));
8529
8530         /* In case of device discovery with BR/EDR devices (pre 1.2), the
8531          * RSSI value was reported as 0 when not available. This behavior
8532          * is kept when using device discovery. This is required for full
8533          * backwards compatibility with the API.
8534          *
8535          * However when using service discovery, the value 127 will be
8536          * returned when the RSSI is not available.
8537          */
8538         if (rssi == HCI_RSSI_INVALID && !hdev->discovery.report_invalid_rssi &&
8539             link_type == ACL_LINK)
8540                 rssi = 0;
8541
8542         bacpy(&ev->addr.bdaddr, bdaddr);
8543         ev->addr.type = link_to_bdaddr(link_type, addr_type);
8544         ev->rssi = rssi;
8545         ev->flags = cpu_to_le32(flags);
8546
8547         if (eir_len > 0)
8548                 /* Copy EIR or advertising data into event */
8549                 memcpy(ev->eir, eir, eir_len);
8550
8551         if (dev_class && !eir_has_data_type(ev->eir, eir_len, EIR_CLASS_OF_DEV))
8552                 eir_len = eir_append_data(ev->eir, eir_len, EIR_CLASS_OF_DEV,
8553                                           dev_class, 3);
8554
8555         if (scan_rsp_len > 0)
8556                 /* Append scan response data to event */
8557                 memcpy(ev->eir + eir_len, scan_rsp, scan_rsp_len);
8558
8559         ev->eir_len = cpu_to_le16(eir_len + scan_rsp_len);
8560         ev_size = sizeof(*ev) + eir_len + scan_rsp_len;
8561
8562         mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, ev_size, NULL);
8563 }
8564
8565 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8566                       u8 addr_type, s8 rssi, u8 *name, u8 name_len)
8567 {
8568         struct mgmt_ev_device_found *ev;
8569         char buf[sizeof(*ev) + HCI_MAX_NAME_LENGTH + 2];
8570         u16 eir_len;
8571
8572         ev = (struct mgmt_ev_device_found *) buf;
8573
8574         memset(buf, 0, sizeof(buf));
8575
8576         bacpy(&ev->addr.bdaddr, bdaddr);
8577         ev->addr.type = link_to_bdaddr(link_type, addr_type);
8578         ev->rssi = rssi;
8579
8580         eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, name,
8581                                   name_len);
8582
8583         ev->eir_len = cpu_to_le16(eir_len);
8584
8585         mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, sizeof(*ev) + eir_len, NULL);
8586 }
8587
8588 void mgmt_discovering(struct hci_dev *hdev, u8 discovering)
8589 {
8590         struct mgmt_ev_discovering ev;
8591
8592         BT_DBG("%s discovering %u", hdev->name, discovering);
8593
8594         memset(&ev, 0, sizeof(ev));
8595         ev.type = hdev->discovery.type;
8596         ev.discovering = discovering;
8597
8598         mgmt_event(MGMT_EV_DISCOVERING, hdev, &ev, sizeof(ev), NULL);
8599 }
8600
8601 static void adv_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
8602 {
8603         BT_DBG("%s status %u", hdev->name, status);
8604 }
8605
8606 void mgmt_reenable_advertising(struct hci_dev *hdev)
8607 {
8608         struct hci_request req;
8609         u8 instance;
8610
8611         if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
8612             !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))
8613                 return;
8614
8615         instance = get_current_adv_instance(hdev);
8616
8617         hci_req_init(&req, hdev);
8618
8619         if (instance) {
8620                 schedule_adv_instance(&req, instance, true);
8621         } else {
8622                 update_adv_data(&req);
8623                 update_scan_rsp_data(&req);
8624                 enable_advertising(&req);
8625         }
8626
8627         hci_req_run(&req, adv_enable_complete);
8628 }
8629
8630 static struct hci_mgmt_chan chan = {
8631         .channel        = HCI_CHANNEL_CONTROL,
8632         .handler_count  = ARRAY_SIZE(mgmt_handlers),
8633         .handlers       = mgmt_handlers,
8634         .hdev_init      = mgmt_init_hdev,
8635 };
8636
8637 int mgmt_init(void)
8638 {
8639         return hci_mgmt_chan_register(&chan);
8640 }
8641
8642 void mgmt_exit(void)
8643 {
8644         hci_mgmt_chan_unregister(&chan);
8645 }