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_scan(hdev, &cp->addr.bdaddr,
3568                                            addr_type, sec_level,
3569                                            HCI_LE_CONN_TIMEOUT,
3570                                            HCI_ROLE_MASTER);
3571         }
3572
3573         if (IS_ERR(conn)) {
3574                 int status;
3575
3576                 if (PTR_ERR(conn) == -EBUSY)
3577                         status = MGMT_STATUS_BUSY;
3578                 else if (PTR_ERR(conn) == -EOPNOTSUPP)
3579                         status = MGMT_STATUS_NOT_SUPPORTED;
3580                 else if (PTR_ERR(conn) == -ECONNREFUSED)
3581                         status = MGMT_STATUS_REJECTED;
3582                 else
3583                         status = MGMT_STATUS_CONNECT_FAILED;
3584
3585                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3586                                         status, &rp, sizeof(rp));
3587                 goto unlock;
3588         }
3589
3590         if (conn->connect_cfm_cb) {
3591                 hci_conn_drop(conn);
3592                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
3593                                         MGMT_STATUS_BUSY, &rp, sizeof(rp));
3594                 goto unlock;
3595         }
3596
3597         cmd = mgmt_pending_add(sk, MGMT_OP_PAIR_DEVICE, hdev, data, len);
3598         if (!cmd) {
3599                 err = -ENOMEM;
3600                 hci_conn_drop(conn);
3601                 goto unlock;
3602         }
3603
3604         cmd->cmd_complete = pairing_complete;
3605
3606         /* For LE, just connecting isn't a proof that the pairing finished */
3607         if (cp->addr.type == BDADDR_BREDR) {
3608                 conn->connect_cfm_cb = pairing_complete_cb;
3609                 conn->security_cfm_cb = pairing_complete_cb;
3610                 conn->disconn_cfm_cb = pairing_complete_cb;
3611         } else {
3612                 conn->connect_cfm_cb = le_pairing_complete_cb;
3613                 conn->security_cfm_cb = le_pairing_complete_cb;
3614                 conn->disconn_cfm_cb = le_pairing_complete_cb;
3615         }
3616
3617         conn->io_capability = cp->io_cap;
3618         cmd->user_data = hci_conn_get(conn);
3619
3620         if ((conn->state == BT_CONNECTED || conn->state == BT_CONFIG) &&
3621             hci_conn_security(conn, sec_level, auth_type, true)) {
3622                 cmd->cmd_complete(cmd, 0);
3623                 mgmt_pending_remove(cmd);
3624         }
3625
3626         err = 0;
3627
3628 unlock:
3629         hci_dev_unlock(hdev);
3630         return err;
3631 }
3632
3633 static int cancel_pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
3634                               u16 len)
3635 {
3636         struct mgmt_addr_info *addr = data;
3637         struct mgmt_pending_cmd *cmd;
3638         struct hci_conn *conn;
3639         int err;
3640
3641         BT_DBG("");
3642
3643         hci_dev_lock(hdev);
3644
3645         if (!hdev_is_powered(hdev)) {
3646                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3647                                       MGMT_STATUS_NOT_POWERED);
3648                 goto unlock;
3649         }
3650
3651         cmd = pending_find(MGMT_OP_PAIR_DEVICE, hdev);
3652         if (!cmd) {
3653                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3654                                       MGMT_STATUS_INVALID_PARAMS);
3655                 goto unlock;
3656         }
3657
3658         conn = cmd->user_data;
3659
3660         if (bacmp(&addr->bdaddr, &conn->dst) != 0) {
3661                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
3662                                       MGMT_STATUS_INVALID_PARAMS);
3663                 goto unlock;
3664         }
3665
3666         cmd->cmd_complete(cmd, MGMT_STATUS_CANCELLED);
3667         mgmt_pending_remove(cmd);
3668
3669         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 0,
3670                                 addr, sizeof(*addr));
3671 unlock:
3672         hci_dev_unlock(hdev);
3673         return err;
3674 }
3675
3676 static int user_pairing_resp(struct sock *sk, struct hci_dev *hdev,
3677                              struct mgmt_addr_info *addr, u16 mgmt_op,
3678                              u16 hci_op, __le32 passkey)
3679 {
3680         struct mgmt_pending_cmd *cmd;
3681         struct hci_conn *conn;
3682         int err;
3683
3684         hci_dev_lock(hdev);
3685
3686         if (!hdev_is_powered(hdev)) {
3687                 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3688                                         MGMT_STATUS_NOT_POWERED, addr,
3689                                         sizeof(*addr));
3690                 goto done;
3691         }
3692
3693         if (addr->type == BDADDR_BREDR)
3694                 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &addr->bdaddr);
3695         else
3696                 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &addr->bdaddr);
3697
3698         if (!conn) {
3699                 err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3700                                         MGMT_STATUS_NOT_CONNECTED, addr,
3701                                         sizeof(*addr));
3702                 goto done;
3703         }
3704
3705         if (addr->type == BDADDR_LE_PUBLIC || addr->type == BDADDR_LE_RANDOM) {
3706                 err = smp_user_confirm_reply(conn, mgmt_op, passkey);
3707                 if (!err)
3708                         err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3709                                                 MGMT_STATUS_SUCCESS, addr,
3710                                                 sizeof(*addr));
3711                 else
3712                         err = mgmt_cmd_complete(sk, hdev->id, mgmt_op,
3713                                                 MGMT_STATUS_FAILED, addr,
3714                                                 sizeof(*addr));
3715
3716                 goto done;
3717         }
3718
3719         cmd = mgmt_pending_add(sk, mgmt_op, hdev, addr, sizeof(*addr));
3720         if (!cmd) {
3721                 err = -ENOMEM;
3722                 goto done;
3723         }
3724
3725         cmd->cmd_complete = addr_cmd_complete;
3726
3727         /* Continue with pairing via HCI */
3728         if (hci_op == HCI_OP_USER_PASSKEY_REPLY) {
3729                 struct hci_cp_user_passkey_reply cp;
3730
3731                 bacpy(&cp.bdaddr, &addr->bdaddr);
3732                 cp.passkey = passkey;
3733                 err = hci_send_cmd(hdev, hci_op, sizeof(cp), &cp);
3734         } else
3735                 err = hci_send_cmd(hdev, hci_op, sizeof(addr->bdaddr),
3736                                    &addr->bdaddr);
3737
3738         if (err < 0)
3739                 mgmt_pending_remove(cmd);
3740
3741 done:
3742         hci_dev_unlock(hdev);
3743         return err;
3744 }
3745
3746 static int pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev,
3747                               void *data, u16 len)
3748 {
3749         struct mgmt_cp_pin_code_neg_reply *cp = data;
3750
3751         BT_DBG("");
3752
3753         return user_pairing_resp(sk, hdev, &cp->addr,
3754                                 MGMT_OP_PIN_CODE_NEG_REPLY,
3755                                 HCI_OP_PIN_CODE_NEG_REPLY, 0);
3756 }
3757
3758 static int user_confirm_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3759                               u16 len)
3760 {
3761         struct mgmt_cp_user_confirm_reply *cp = data;
3762
3763         BT_DBG("");
3764
3765         if (len != sizeof(*cp))
3766                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_USER_CONFIRM_REPLY,
3767                                        MGMT_STATUS_INVALID_PARAMS);
3768
3769         return user_pairing_resp(sk, hdev, &cp->addr,
3770                                  MGMT_OP_USER_CONFIRM_REPLY,
3771                                  HCI_OP_USER_CONFIRM_REPLY, 0);
3772 }
3773
3774 static int user_confirm_neg_reply(struct sock *sk, struct hci_dev *hdev,
3775                                   void *data, u16 len)
3776 {
3777         struct mgmt_cp_user_confirm_neg_reply *cp = data;
3778
3779         BT_DBG("");
3780
3781         return user_pairing_resp(sk, hdev, &cp->addr,
3782                                  MGMT_OP_USER_CONFIRM_NEG_REPLY,
3783                                  HCI_OP_USER_CONFIRM_NEG_REPLY, 0);
3784 }
3785
3786 static int user_passkey_reply(struct sock *sk, struct hci_dev *hdev, void *data,
3787                               u16 len)
3788 {
3789         struct mgmt_cp_user_passkey_reply *cp = data;
3790
3791         BT_DBG("");
3792
3793         return user_pairing_resp(sk, hdev, &cp->addr,
3794                                  MGMT_OP_USER_PASSKEY_REPLY,
3795                                  HCI_OP_USER_PASSKEY_REPLY, cp->passkey);
3796 }
3797
3798 static int user_passkey_neg_reply(struct sock *sk, struct hci_dev *hdev,
3799                                   void *data, u16 len)
3800 {
3801         struct mgmt_cp_user_passkey_neg_reply *cp = data;
3802
3803         BT_DBG("");
3804
3805         return user_pairing_resp(sk, hdev, &cp->addr,
3806                                  MGMT_OP_USER_PASSKEY_NEG_REPLY,
3807                                  HCI_OP_USER_PASSKEY_NEG_REPLY, 0);
3808 }
3809
3810 static void update_name(struct hci_request *req)
3811 {
3812         struct hci_dev *hdev = req->hdev;
3813         struct hci_cp_write_local_name cp;
3814
3815         memcpy(cp.name, hdev->dev_name, sizeof(cp.name));
3816
3817         hci_req_add(req, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp);
3818 }
3819
3820 static void set_name_complete(struct hci_dev *hdev, u8 status, u16 opcode)
3821 {
3822         struct mgmt_cp_set_local_name *cp;
3823         struct mgmt_pending_cmd *cmd;
3824
3825         BT_DBG("status 0x%02x", status);
3826
3827         hci_dev_lock(hdev);
3828
3829         cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev);
3830         if (!cmd)
3831                 goto unlock;
3832
3833         cp = cmd->param;
3834
3835         if (status)
3836                 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME,
3837                                 mgmt_status(status));
3838         else
3839                 mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3840                                   cp, sizeof(*cp));
3841
3842         mgmt_pending_remove(cmd);
3843
3844 unlock:
3845         hci_dev_unlock(hdev);
3846 }
3847
3848 static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data,
3849                           u16 len)
3850 {
3851         struct mgmt_cp_set_local_name *cp = data;
3852         struct mgmt_pending_cmd *cmd;
3853         struct hci_request req;
3854         int err;
3855
3856         BT_DBG("");
3857
3858         hci_dev_lock(hdev);
3859
3860         /* If the old values are the same as the new ones just return a
3861          * direct command complete event.
3862          */
3863         if (!memcmp(hdev->dev_name, cp->name, sizeof(hdev->dev_name)) &&
3864             !memcmp(hdev->short_name, cp->short_name,
3865                     sizeof(hdev->short_name))) {
3866                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3867                                         data, len);
3868                 goto failed;
3869         }
3870
3871         memcpy(hdev->short_name, cp->short_name, sizeof(hdev->short_name));
3872
3873         if (!hdev_is_powered(hdev)) {
3874                 memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name));
3875
3876                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
3877                                         data, len);
3878                 if (err < 0)
3879                         goto failed;
3880
3881                 err = mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev,
3882                                          data, len, sk);
3883
3884                 goto failed;
3885         }
3886
3887         cmd = mgmt_pending_add(sk, MGMT_OP_SET_LOCAL_NAME, hdev, data, len);
3888         if (!cmd) {
3889                 err = -ENOMEM;
3890                 goto failed;
3891         }
3892
3893         memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name));
3894
3895         hci_req_init(&req, hdev);
3896
3897         if (lmp_bredr_capable(hdev)) {
3898                 update_name(&req);
3899                 update_eir(&req);
3900         }
3901
3902         /* The name is stored in the scan response data and so
3903          * no need to udpate the advertising data here.
3904          */
3905         if (lmp_le_capable(hdev))
3906                 update_scan_rsp_data(&req);
3907
3908         err = hci_req_run(&req, set_name_complete);
3909         if (err < 0)
3910                 mgmt_pending_remove(cmd);
3911
3912 failed:
3913         hci_dev_unlock(hdev);
3914         return err;
3915 }
3916
3917 static void read_local_oob_data_complete(struct hci_dev *hdev, u8 status,
3918                                          u16 opcode, struct sk_buff *skb)
3919 {
3920         struct mgmt_rp_read_local_oob_data mgmt_rp;
3921         size_t rp_size = sizeof(mgmt_rp);
3922         struct mgmt_pending_cmd *cmd;
3923
3924         BT_DBG("%s status %u", hdev->name, status);
3925
3926         cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev);
3927         if (!cmd)
3928                 return;
3929
3930         if (status || !skb) {
3931                 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3932                                 status ? mgmt_status(status) : MGMT_STATUS_FAILED);
3933                 goto remove;
3934         }
3935
3936         memset(&mgmt_rp, 0, sizeof(mgmt_rp));
3937
3938         if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) {
3939                 struct hci_rp_read_local_oob_data *rp = (void *) skb->data;
3940
3941                 if (skb->len < sizeof(*rp)) {
3942                         mgmt_cmd_status(cmd->sk, hdev->id,
3943                                         MGMT_OP_READ_LOCAL_OOB_DATA,
3944                                         MGMT_STATUS_FAILED);
3945                         goto remove;
3946                 }
3947
3948                 memcpy(mgmt_rp.hash192, rp->hash, sizeof(rp->hash));
3949                 memcpy(mgmt_rp.rand192, rp->rand, sizeof(rp->rand));
3950
3951                 rp_size -= sizeof(mgmt_rp.hash256) + sizeof(mgmt_rp.rand256);
3952         } else {
3953                 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;
3954
3955                 if (skb->len < sizeof(*rp)) {
3956                         mgmt_cmd_status(cmd->sk, hdev->id,
3957                                         MGMT_OP_READ_LOCAL_OOB_DATA,
3958                                         MGMT_STATUS_FAILED);
3959                         goto remove;
3960                 }
3961
3962                 memcpy(mgmt_rp.hash192, rp->hash192, sizeof(rp->hash192));
3963                 memcpy(mgmt_rp.rand192, rp->rand192, sizeof(rp->rand192));
3964
3965                 memcpy(mgmt_rp.hash256, rp->hash256, sizeof(rp->hash256));
3966                 memcpy(mgmt_rp.rand256, rp->rand256, sizeof(rp->rand256));
3967         }
3968
3969         mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3970                           MGMT_STATUS_SUCCESS, &mgmt_rp, rp_size);
3971
3972 remove:
3973         mgmt_pending_remove(cmd);
3974 }
3975
3976 static int read_local_oob_data(struct sock *sk, struct hci_dev *hdev,
3977                                void *data, u16 data_len)
3978 {
3979         struct mgmt_pending_cmd *cmd;
3980         struct hci_request req;
3981         int err;
3982
3983         BT_DBG("%s", hdev->name);
3984
3985         hci_dev_lock(hdev);
3986
3987         if (!hdev_is_powered(hdev)) {
3988                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3989                                       MGMT_STATUS_NOT_POWERED);
3990                 goto unlock;
3991         }
3992
3993         if (!lmp_ssp_capable(hdev)) {
3994                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
3995                                       MGMT_STATUS_NOT_SUPPORTED);
3996                 goto unlock;
3997         }
3998
3999         if (pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev)) {
4000                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
4001                                       MGMT_STATUS_BUSY);
4002                 goto unlock;
4003         }
4004
4005         cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_DATA, hdev, NULL, 0);
4006         if (!cmd) {
4007                 err = -ENOMEM;
4008                 goto unlock;
4009         }
4010
4011         hci_req_init(&req, hdev);
4012
4013         if (bredr_sc_enabled(hdev))
4014                 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL);
4015         else
4016                 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL);
4017
4018         err = hci_req_run_skb(&req, read_local_oob_data_complete);
4019         if (err < 0)
4020                 mgmt_pending_remove(cmd);
4021
4022 unlock:
4023         hci_dev_unlock(hdev);
4024         return err;
4025 }
4026
4027 static int add_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
4028                                void *data, u16 len)
4029 {
4030         struct mgmt_addr_info *addr = data;
4031         int err;
4032
4033         BT_DBG("%s ", hdev->name);
4034
4035         if (!bdaddr_type_is_valid(addr->type))
4036                 return mgmt_cmd_complete(sk, hdev->id,
4037                                          MGMT_OP_ADD_REMOTE_OOB_DATA,
4038                                          MGMT_STATUS_INVALID_PARAMS,
4039                                          addr, sizeof(*addr));
4040
4041         hci_dev_lock(hdev);
4042
4043         if (len == MGMT_ADD_REMOTE_OOB_DATA_SIZE) {
4044                 struct mgmt_cp_add_remote_oob_data *cp = data;
4045                 u8 status;
4046
4047                 if (cp->addr.type != BDADDR_BREDR) {
4048                         err = mgmt_cmd_complete(sk, hdev->id,
4049                                                 MGMT_OP_ADD_REMOTE_OOB_DATA,
4050                                                 MGMT_STATUS_INVALID_PARAMS,
4051                                                 &cp->addr, sizeof(cp->addr));
4052                         goto unlock;
4053                 }
4054
4055                 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr,
4056                                               cp->addr.type, cp->hash,
4057                                               cp->rand, NULL, NULL);
4058                 if (err < 0)
4059                         status = MGMT_STATUS_FAILED;
4060                 else
4061                         status = MGMT_STATUS_SUCCESS;
4062
4063                 err = mgmt_cmd_complete(sk, hdev->id,
4064                                         MGMT_OP_ADD_REMOTE_OOB_DATA, status,
4065                                         &cp->addr, sizeof(cp->addr));
4066         } else if (len == MGMT_ADD_REMOTE_OOB_EXT_DATA_SIZE) {
4067                 struct mgmt_cp_add_remote_oob_ext_data *cp = data;
4068                 u8 *rand192, *hash192, *rand256, *hash256;
4069                 u8 status;
4070
4071                 if (bdaddr_type_is_le(cp->addr.type)) {
4072                         /* Enforce zero-valued 192-bit parameters as
4073                          * long as legacy SMP OOB isn't implemented.
4074                          */
4075                         if (memcmp(cp->rand192, ZERO_KEY, 16) ||
4076                             memcmp(cp->hash192, ZERO_KEY, 16)) {
4077                                 err = mgmt_cmd_complete(sk, hdev->id,
4078                                                         MGMT_OP_ADD_REMOTE_OOB_DATA,
4079                                                         MGMT_STATUS_INVALID_PARAMS,
4080                                                         addr, sizeof(*addr));
4081                                 goto unlock;
4082                         }
4083
4084                         rand192 = NULL;
4085                         hash192 = NULL;
4086                 } else {
4087                         /* In case one of the P-192 values is set to zero,
4088                          * then just disable OOB data for P-192.
4089                          */
4090                         if (!memcmp(cp->rand192, ZERO_KEY, 16) ||
4091                             !memcmp(cp->hash192, ZERO_KEY, 16)) {
4092                                 rand192 = NULL;
4093                                 hash192 = NULL;
4094                         } else {
4095                                 rand192 = cp->rand192;
4096                                 hash192 = cp->hash192;
4097                         }
4098                 }
4099
4100                 /* In case one of the P-256 values is set to zero, then just
4101                  * disable OOB data for P-256.
4102                  */
4103                 if (!memcmp(cp->rand256, ZERO_KEY, 16) ||
4104                     !memcmp(cp->hash256, ZERO_KEY, 16)) {
4105                         rand256 = NULL;
4106                         hash256 = NULL;
4107                 } else {
4108                         rand256 = cp->rand256;
4109                         hash256 = cp->hash256;
4110                 }
4111
4112                 err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr,
4113                                               cp->addr.type, hash192, rand192,
4114                                               hash256, rand256);
4115                 if (err < 0)
4116                         status = MGMT_STATUS_FAILED;
4117                 else
4118                         status = MGMT_STATUS_SUCCESS;
4119
4120                 err = mgmt_cmd_complete(sk, hdev->id,
4121                                         MGMT_OP_ADD_REMOTE_OOB_DATA,
4122                                         status, &cp->addr, sizeof(cp->addr));
4123         } else {
4124                 BT_ERR("add_remote_oob_data: invalid length of %u bytes", len);
4125                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA,
4126                                       MGMT_STATUS_INVALID_PARAMS);
4127         }
4128
4129 unlock:
4130         hci_dev_unlock(hdev);
4131         return err;
4132 }
4133
4134 static int remove_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
4135                                   void *data, u16 len)
4136 {
4137         struct mgmt_cp_remove_remote_oob_data *cp = data;
4138         u8 status;
4139         int err;
4140
4141         BT_DBG("%s", hdev->name);
4142
4143         if (cp->addr.type != BDADDR_BREDR)
4144                 return mgmt_cmd_complete(sk, hdev->id,
4145                                          MGMT_OP_REMOVE_REMOTE_OOB_DATA,
4146                                          MGMT_STATUS_INVALID_PARAMS,
4147                                          &cp->addr, sizeof(cp->addr));
4148
4149         hci_dev_lock(hdev);
4150
4151         if (!bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
4152                 hci_remote_oob_data_clear(hdev);
4153                 status = MGMT_STATUS_SUCCESS;
4154                 goto done;
4155         }
4156
4157         err = hci_remove_remote_oob_data(hdev, &cp->addr.bdaddr, cp->addr.type);
4158         if (err < 0)
4159                 status = MGMT_STATUS_INVALID_PARAMS;
4160         else
4161                 status = MGMT_STATUS_SUCCESS;
4162
4163 done:
4164         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_REMOTE_OOB_DATA,
4165                                 status, &cp->addr, sizeof(cp->addr));
4166
4167         hci_dev_unlock(hdev);
4168         return err;
4169 }
4170
4171 static bool trigger_bredr_inquiry(struct hci_request *req, u8 *status)
4172 {
4173         struct hci_dev *hdev = req->hdev;
4174         struct hci_cp_inquiry cp;
4175         /* General inquiry access code (GIAC) */
4176         u8 lap[3] = { 0x33, 0x8b, 0x9e };
4177
4178         *status = mgmt_bredr_support(hdev);
4179         if (*status)
4180                 return false;
4181
4182         if (hci_dev_test_flag(hdev, HCI_INQUIRY)) {
4183                 *status = MGMT_STATUS_BUSY;
4184                 return false;
4185         }
4186
4187         hci_inquiry_cache_flush(hdev);
4188
4189         memset(&cp, 0, sizeof(cp));
4190         memcpy(&cp.lap, lap, sizeof(cp.lap));
4191         cp.length = DISCOV_BREDR_INQUIRY_LEN;
4192
4193         hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp);
4194
4195         return true;
4196 }
4197
4198 static bool trigger_le_scan(struct hci_request *req, u16 interval, u8 *status)
4199 {
4200         struct hci_dev *hdev = req->hdev;
4201         struct hci_cp_le_set_scan_param param_cp;
4202         struct hci_cp_le_set_scan_enable enable_cp;
4203         u8 own_addr_type;
4204         int err;
4205
4206         *status = mgmt_le_support(hdev);
4207         if (*status)
4208                 return false;
4209
4210         if (hci_dev_test_flag(hdev, HCI_LE_ADV)) {
4211                 /* Don't let discovery abort an outgoing connection attempt
4212                  * that's using directed advertising.
4213                  */
4214                 if (hci_lookup_le_connect(hdev)) {
4215                         *status = MGMT_STATUS_REJECTED;
4216                         return false;
4217                 }
4218
4219                 cancel_adv_timeout(hdev);
4220                 disable_advertising(req);
4221         }
4222
4223         /* If controller is scanning, it means the background scanning is
4224          * running. Thus, we should temporarily stop it in order to set the
4225          * discovery scanning parameters.
4226          */
4227         if (hci_dev_test_flag(hdev, HCI_LE_SCAN))
4228                 hci_req_add_le_scan_disable(req);
4229
4230         /* All active scans will be done with either a resolvable private
4231          * address (when privacy feature has been enabled) or non-resolvable
4232          * private address.
4233          */
4234         err = hci_update_random_address(req, true, &own_addr_type);
4235         if (err < 0) {
4236                 *status = MGMT_STATUS_FAILED;
4237                 return false;
4238         }
4239
4240         memset(&param_cp, 0, sizeof(param_cp));
4241         param_cp.type = LE_SCAN_ACTIVE;
4242         param_cp.interval = cpu_to_le16(interval);
4243         param_cp.window = cpu_to_le16(DISCOV_LE_SCAN_WIN);
4244         param_cp.own_address_type = own_addr_type;
4245
4246         hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
4247                     &param_cp);
4248
4249         memset(&enable_cp, 0, sizeof(enable_cp));
4250         enable_cp.enable = LE_SCAN_ENABLE;
4251         enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
4252
4253         hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
4254                     &enable_cp);
4255
4256         return true;
4257 }
4258
4259 static bool trigger_discovery(struct hci_request *req, u8 *status)
4260 {
4261         struct hci_dev *hdev = req->hdev;
4262
4263         switch (hdev->discovery.type) {
4264         case DISCOV_TYPE_BREDR:
4265                 if (!trigger_bredr_inquiry(req, status))
4266                         return false;
4267                 break;
4268
4269         case DISCOV_TYPE_INTERLEAVED:
4270                 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY,
4271                              &hdev->quirks)) {
4272                         /* During simultaneous discovery, we double LE scan
4273                          * interval. We must leave some time for the controller
4274                          * to do BR/EDR inquiry.
4275                          */
4276                         if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT * 2,
4277                                              status))
4278                                 return false;
4279
4280                         if (!trigger_bredr_inquiry(req, status))
4281                                 return false;
4282
4283                         return true;
4284                 }
4285
4286                 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
4287                         *status = MGMT_STATUS_NOT_SUPPORTED;
4288                         return false;
4289                 }
4290                 /* fall through */
4291
4292         case DISCOV_TYPE_LE:
4293                 if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT, status))
4294                         return false;
4295                 break;
4296
4297         default:
4298                 *status = MGMT_STATUS_INVALID_PARAMS;
4299                 return false;
4300         }
4301
4302         return true;
4303 }
4304
4305 static void start_discovery_complete(struct hci_dev *hdev, u8 status,
4306                                      u16 opcode)
4307 {
4308         struct mgmt_pending_cmd *cmd;
4309         unsigned long timeout;
4310
4311         BT_DBG("status %d", status);
4312
4313         hci_dev_lock(hdev);
4314
4315         cmd = pending_find(MGMT_OP_START_DISCOVERY, hdev);
4316         if (!cmd)
4317                 cmd = pending_find(MGMT_OP_START_SERVICE_DISCOVERY, hdev);
4318
4319         if (cmd) {
4320                 cmd->cmd_complete(cmd, mgmt_status(status));
4321                 mgmt_pending_remove(cmd);
4322         }
4323
4324         if (status) {
4325                 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4326                 goto unlock;
4327         }
4328
4329         hci_discovery_set_state(hdev, DISCOVERY_FINDING);
4330
4331         /* If the scan involves LE scan, pick proper timeout to schedule
4332          * hdev->le_scan_disable that will stop it.
4333          */
4334         switch (hdev->discovery.type) {
4335         case DISCOV_TYPE_LE:
4336                 timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
4337                 break;
4338         case DISCOV_TYPE_INTERLEAVED:
4339                  /* When running simultaneous discovery, the LE scanning time
4340                  * should occupy the whole discovery time sine BR/EDR inquiry
4341                  * and LE scanning are scheduled by the controller.
4342                  *
4343                  * For interleaving discovery in comparison, BR/EDR inquiry
4344                  * and LE scanning are done sequentially with separate
4345                  * timeouts.
4346                  */
4347                 if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
4348                         timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT);
4349                 else
4350                         timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout);
4351                 break;
4352         case DISCOV_TYPE_BREDR:
4353                 timeout = 0;
4354                 break;
4355         default:
4356                 BT_ERR("Invalid discovery type %d", hdev->discovery.type);
4357                 timeout = 0;
4358                 break;
4359         }
4360
4361         if (timeout) {
4362                 /* When service discovery is used and the controller has
4363                  * a strict duplicate filter, it is important to remember
4364                  * the start and duration of the scan. This is required
4365                  * for restarting scanning during the discovery phase.
4366                  */
4367                 if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER,
4368                              &hdev->quirks) &&
4369                     hdev->discovery.result_filtering) {
4370                         hdev->discovery.scan_start = jiffies;
4371                         hdev->discovery.scan_duration = timeout;
4372                 }
4373
4374                 queue_delayed_work(hdev->workqueue,
4375                                    &hdev->le_scan_disable, timeout);
4376         }
4377
4378 unlock:
4379         hci_dev_unlock(hdev);
4380 }
4381
4382 static int start_discovery(struct sock *sk, struct hci_dev *hdev,
4383                            void *data, u16 len)
4384 {
4385         struct mgmt_cp_start_discovery *cp = data;
4386         struct mgmt_pending_cmd *cmd;
4387         struct hci_request req;
4388         u8 status;
4389         int err;
4390
4391         BT_DBG("%s", hdev->name);
4392
4393         hci_dev_lock(hdev);
4394
4395         if (!hdev_is_powered(hdev)) {
4396                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
4397                                         MGMT_STATUS_NOT_POWERED,
4398                                         &cp->type, sizeof(cp->type));
4399                 goto failed;
4400         }
4401
4402         if (hdev->discovery.state != DISCOVERY_STOPPED ||
4403             hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) {
4404                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
4405                                         MGMT_STATUS_BUSY, &cp->type,
4406                                         sizeof(cp->type));
4407                 goto failed;
4408         }
4409
4410         cmd = mgmt_pending_add(sk, MGMT_OP_START_DISCOVERY, hdev, data, len);
4411         if (!cmd) {
4412                 err = -ENOMEM;
4413                 goto failed;
4414         }
4415
4416         cmd->cmd_complete = generic_cmd_complete;
4417
4418         /* Clear the discovery filter first to free any previously
4419          * allocated memory for the UUID list.
4420          */
4421         hci_discovery_filter_clear(hdev);
4422
4423         hdev->discovery.type = cp->type;
4424         hdev->discovery.report_invalid_rssi = false;
4425
4426         hci_req_init(&req, hdev);
4427
4428         if (!trigger_discovery(&req, &status)) {
4429                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY,
4430                                         status, &cp->type, sizeof(cp->type));
4431                 mgmt_pending_remove(cmd);
4432                 goto failed;
4433         }
4434
4435         err = hci_req_run(&req, start_discovery_complete);
4436         if (err < 0) {
4437                 mgmt_pending_remove(cmd);
4438                 goto failed;
4439         }
4440
4441         hci_discovery_set_state(hdev, DISCOVERY_STARTING);
4442
4443 failed:
4444         hci_dev_unlock(hdev);
4445         return err;
4446 }
4447
4448 static int service_discovery_cmd_complete(struct mgmt_pending_cmd *cmd,
4449                                           u8 status)
4450 {
4451         return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status,
4452                                  cmd->param, 1);
4453 }
4454
4455 static int start_service_discovery(struct sock *sk, struct hci_dev *hdev,
4456                                    void *data, u16 len)
4457 {
4458         struct mgmt_cp_start_service_discovery *cp = data;
4459         struct mgmt_pending_cmd *cmd;
4460         struct hci_request req;
4461         const u16 max_uuid_count = ((U16_MAX - sizeof(*cp)) / 16);
4462         u16 uuid_count, expected_len;
4463         u8 status;
4464         int err;
4465
4466         BT_DBG("%s", hdev->name);
4467
4468         hci_dev_lock(hdev);
4469
4470         if (!hdev_is_powered(hdev)) {
4471                 err = mgmt_cmd_complete(sk, hdev->id,
4472                                         MGMT_OP_START_SERVICE_DISCOVERY,
4473                                         MGMT_STATUS_NOT_POWERED,
4474                                         &cp->type, sizeof(cp->type));
4475                 goto failed;
4476         }
4477
4478         if (hdev->discovery.state != DISCOVERY_STOPPED ||
4479             hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) {
4480                 err = mgmt_cmd_complete(sk, hdev->id,
4481                                         MGMT_OP_START_SERVICE_DISCOVERY,
4482                                         MGMT_STATUS_BUSY, &cp->type,
4483                                         sizeof(cp->type));
4484                 goto failed;
4485         }
4486
4487         uuid_count = __le16_to_cpu(cp->uuid_count);
4488         if (uuid_count > max_uuid_count) {
4489                 BT_ERR("service_discovery: too big uuid_count value %u",
4490                        uuid_count);
4491                 err = mgmt_cmd_complete(sk, hdev->id,
4492                                         MGMT_OP_START_SERVICE_DISCOVERY,
4493                                         MGMT_STATUS_INVALID_PARAMS, &cp->type,
4494                                         sizeof(cp->type));
4495                 goto failed;
4496         }
4497
4498         expected_len = sizeof(*cp) + uuid_count * 16;
4499         if (expected_len != len) {
4500                 BT_ERR("service_discovery: expected %u bytes, got %u bytes",
4501                        expected_len, len);
4502                 err = mgmt_cmd_complete(sk, hdev->id,
4503                                         MGMT_OP_START_SERVICE_DISCOVERY,
4504                                         MGMT_STATUS_INVALID_PARAMS, &cp->type,
4505                                         sizeof(cp->type));
4506                 goto failed;
4507         }
4508
4509         cmd = mgmt_pending_add(sk, MGMT_OP_START_SERVICE_DISCOVERY,
4510                                hdev, data, len);
4511         if (!cmd) {
4512                 err = -ENOMEM;
4513                 goto failed;
4514         }
4515
4516         cmd->cmd_complete = service_discovery_cmd_complete;
4517
4518         /* Clear the discovery filter first to free any previously
4519          * allocated memory for the UUID list.
4520          */
4521         hci_discovery_filter_clear(hdev);
4522
4523         hdev->discovery.result_filtering = true;
4524         hdev->discovery.type = cp->type;
4525         hdev->discovery.rssi = cp->rssi;
4526         hdev->discovery.uuid_count = uuid_count;
4527
4528         if (uuid_count > 0) {
4529                 hdev->discovery.uuids = kmemdup(cp->uuids, uuid_count * 16,
4530                                                 GFP_KERNEL);
4531                 if (!hdev->discovery.uuids) {
4532                         err = mgmt_cmd_complete(sk, hdev->id,
4533                                                 MGMT_OP_START_SERVICE_DISCOVERY,
4534                                                 MGMT_STATUS_FAILED,
4535                                                 &cp->type, sizeof(cp->type));
4536                         mgmt_pending_remove(cmd);
4537                         goto failed;
4538                 }
4539         }
4540
4541         hci_req_init(&req, hdev);
4542
4543         if (!trigger_discovery(&req, &status)) {
4544                 err = mgmt_cmd_complete(sk, hdev->id,
4545                                         MGMT_OP_START_SERVICE_DISCOVERY,
4546                                         status, &cp->type, sizeof(cp->type));
4547                 mgmt_pending_remove(cmd);
4548                 goto failed;
4549         }
4550
4551         err = hci_req_run(&req, start_discovery_complete);
4552         if (err < 0) {
4553                 mgmt_pending_remove(cmd);
4554                 goto failed;
4555         }
4556
4557         hci_discovery_set_state(hdev, DISCOVERY_STARTING);
4558
4559 failed:
4560         hci_dev_unlock(hdev);
4561         return err;
4562 }
4563
4564 static void stop_discovery_complete(struct hci_dev *hdev, u8 status, u16 opcode)
4565 {
4566         struct mgmt_pending_cmd *cmd;
4567
4568         BT_DBG("status %d", status);
4569
4570         hci_dev_lock(hdev);
4571
4572         cmd = pending_find(MGMT_OP_STOP_DISCOVERY, hdev);
4573         if (cmd) {
4574                 cmd->cmd_complete(cmd, mgmt_status(status));
4575                 mgmt_pending_remove(cmd);
4576         }
4577
4578         if (!status)
4579                 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4580
4581         hci_dev_unlock(hdev);
4582 }
4583
4584 static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
4585                           u16 len)
4586 {
4587         struct mgmt_cp_stop_discovery *mgmt_cp = data;
4588         struct mgmt_pending_cmd *cmd;
4589         struct hci_request req;
4590         int err;
4591
4592         BT_DBG("%s", hdev->name);
4593
4594         hci_dev_lock(hdev);
4595
4596         if (!hci_discovery_active(hdev)) {
4597                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
4598                                         MGMT_STATUS_REJECTED, &mgmt_cp->type,
4599                                         sizeof(mgmt_cp->type));
4600                 goto unlock;
4601         }
4602
4603         if (hdev->discovery.type != mgmt_cp->type) {
4604                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
4605                                         MGMT_STATUS_INVALID_PARAMS,
4606                                         &mgmt_cp->type, sizeof(mgmt_cp->type));
4607                 goto unlock;
4608         }
4609
4610         cmd = mgmt_pending_add(sk, MGMT_OP_STOP_DISCOVERY, hdev, data, len);
4611         if (!cmd) {
4612                 err = -ENOMEM;
4613                 goto unlock;
4614         }
4615
4616         cmd->cmd_complete = generic_cmd_complete;
4617
4618         hci_req_init(&req, hdev);
4619
4620         hci_stop_discovery(&req);
4621
4622         err = hci_req_run(&req, stop_discovery_complete);
4623         if (!err) {
4624                 hci_discovery_set_state(hdev, DISCOVERY_STOPPING);
4625                 goto unlock;
4626         }
4627
4628         mgmt_pending_remove(cmd);
4629
4630         /* If no HCI commands were sent we're done */
4631         if (err == -ENODATA) {
4632                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, 0,
4633                                         &mgmt_cp->type, sizeof(mgmt_cp->type));
4634                 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
4635         }
4636
4637 unlock:
4638         hci_dev_unlock(hdev);
4639         return err;
4640 }
4641
4642 static int confirm_name(struct sock *sk, struct hci_dev *hdev, void *data,
4643                         u16 len)
4644 {
4645         struct mgmt_cp_confirm_name *cp = data;
4646         struct inquiry_entry *e;
4647         int err;
4648
4649         BT_DBG("%s", hdev->name);
4650
4651         hci_dev_lock(hdev);
4652
4653         if (!hci_discovery_active(hdev)) {
4654                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
4655                                         MGMT_STATUS_FAILED, &cp->addr,
4656                                         sizeof(cp->addr));
4657                 goto failed;
4658         }
4659
4660         e = hci_inquiry_cache_lookup_unknown(hdev, &cp->addr.bdaddr);
4661         if (!e) {
4662                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME,
4663                                         MGMT_STATUS_INVALID_PARAMS, &cp->addr,
4664                                         sizeof(cp->addr));
4665                 goto failed;
4666         }
4667
4668         if (cp->name_known) {
4669                 e->name_state = NAME_KNOWN;
4670                 list_del(&e->list);
4671         } else {
4672                 e->name_state = NAME_NEEDED;
4673                 hci_inquiry_cache_update_resolve(hdev, e);
4674         }
4675
4676         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, 0,
4677                                 &cp->addr, sizeof(cp->addr));
4678
4679 failed:
4680         hci_dev_unlock(hdev);
4681         return err;
4682 }
4683
4684 static int block_device(struct sock *sk, struct hci_dev *hdev, void *data,
4685                         u16 len)
4686 {
4687         struct mgmt_cp_block_device *cp = data;
4688         u8 status;
4689         int err;
4690
4691         BT_DBG("%s", hdev->name);
4692
4693         if (!bdaddr_type_is_valid(cp->addr.type))
4694                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE,
4695                                          MGMT_STATUS_INVALID_PARAMS,
4696                                          &cp->addr, sizeof(cp->addr));
4697
4698         hci_dev_lock(hdev);
4699
4700         err = hci_bdaddr_list_add(&hdev->blacklist, &cp->addr.bdaddr,
4701                                   cp->addr.type);
4702         if (err < 0) {
4703                 status = MGMT_STATUS_FAILED;
4704                 goto done;
4705         }
4706
4707         mgmt_event(MGMT_EV_DEVICE_BLOCKED, hdev, &cp->addr, sizeof(cp->addr),
4708                    sk);
4709         status = MGMT_STATUS_SUCCESS;
4710
4711 done:
4712         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE, status,
4713                                 &cp->addr, sizeof(cp->addr));
4714
4715         hci_dev_unlock(hdev);
4716
4717         return err;
4718 }
4719
4720 static int unblock_device(struct sock *sk, struct hci_dev *hdev, void *data,
4721                           u16 len)
4722 {
4723         struct mgmt_cp_unblock_device *cp = data;
4724         u8 status;
4725         int err;
4726
4727         BT_DBG("%s", hdev->name);
4728
4729         if (!bdaddr_type_is_valid(cp->addr.type))
4730                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE,
4731                                          MGMT_STATUS_INVALID_PARAMS,
4732                                          &cp->addr, sizeof(cp->addr));
4733
4734         hci_dev_lock(hdev);
4735
4736         err = hci_bdaddr_list_del(&hdev->blacklist, &cp->addr.bdaddr,
4737                                   cp->addr.type);
4738         if (err < 0) {
4739                 status = MGMT_STATUS_INVALID_PARAMS;
4740                 goto done;
4741         }
4742
4743         mgmt_event(MGMT_EV_DEVICE_UNBLOCKED, hdev, &cp->addr, sizeof(cp->addr),
4744                    sk);
4745         status = MGMT_STATUS_SUCCESS;
4746
4747 done:
4748         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE, status,
4749                                 &cp->addr, sizeof(cp->addr));
4750
4751         hci_dev_unlock(hdev);
4752
4753         return err;
4754 }
4755
4756 static int set_device_id(struct sock *sk, struct hci_dev *hdev, void *data,
4757                          u16 len)
4758 {
4759         struct mgmt_cp_set_device_id *cp = data;
4760         struct hci_request req;
4761         int err;
4762         __u16 source;
4763
4764         BT_DBG("%s", hdev->name);
4765
4766         source = __le16_to_cpu(cp->source);
4767
4768         if (source > 0x0002)
4769                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEVICE_ID,
4770                                        MGMT_STATUS_INVALID_PARAMS);
4771
4772         hci_dev_lock(hdev);
4773
4774         hdev->devid_source = source;
4775         hdev->devid_vendor = __le16_to_cpu(cp->vendor);
4776         hdev->devid_product = __le16_to_cpu(cp->product);
4777         hdev->devid_version = __le16_to_cpu(cp->version);
4778
4779         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEVICE_ID, 0,
4780                                 NULL, 0);
4781
4782         hci_req_init(&req, hdev);
4783         update_eir(&req);
4784         hci_req_run(&req, NULL);
4785
4786         hci_dev_unlock(hdev);
4787
4788         return err;
4789 }
4790
4791 static void enable_advertising_instance(struct hci_dev *hdev, u8 status,
4792                                         u16 opcode)
4793 {
4794         BT_DBG("status %d", status);
4795 }
4796
4797 static void set_advertising_complete(struct hci_dev *hdev, u8 status,
4798                                      u16 opcode)
4799 {
4800         struct cmd_lookup match = { NULL, hdev };
4801         struct hci_request req;
4802         u8 instance;
4803         struct adv_info *adv_instance;
4804         int err;
4805
4806         hci_dev_lock(hdev);
4807
4808         if (status) {
4809                 u8 mgmt_err = mgmt_status(status);
4810
4811                 mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev,
4812                                      cmd_status_rsp, &mgmt_err);
4813                 goto unlock;
4814         }
4815
4816         if (hci_dev_test_flag(hdev, HCI_LE_ADV))
4817                 hci_dev_set_flag(hdev, HCI_ADVERTISING);
4818         else
4819                 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
4820
4821         mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev, settings_rsp,
4822                              &match);
4823
4824         new_settings(hdev, match.sk);
4825
4826         if (match.sk)
4827                 sock_put(match.sk);
4828
4829         /* If "Set Advertising" was just disabled and instance advertising was
4830          * set up earlier, then re-enable multi-instance advertising.
4831          */
4832         if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
4833             !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) ||
4834             list_empty(&hdev->adv_instances))
4835                 goto unlock;
4836
4837         instance = hdev->cur_adv_instance;
4838         if (!instance) {
4839                 adv_instance = list_first_entry_or_null(&hdev->adv_instances,
4840                                                         struct adv_info, list);
4841                 if (!adv_instance)
4842                         goto unlock;
4843
4844                 instance = adv_instance->instance;
4845         }
4846
4847         hci_req_init(&req, hdev);
4848
4849         err = schedule_adv_instance(&req, instance, true);
4850
4851         if (!err)
4852                 err = hci_req_run(&req, enable_advertising_instance);
4853
4854         if (err)
4855                 BT_ERR("Failed to re-configure advertising");
4856
4857 unlock:
4858         hci_dev_unlock(hdev);
4859 }
4860
4861 static int set_advertising(struct sock *sk, struct hci_dev *hdev, void *data,
4862                            u16 len)
4863 {
4864         struct mgmt_mode *cp = data;
4865         struct mgmt_pending_cmd *cmd;
4866         struct hci_request req;
4867         u8 val, status;
4868         int err;
4869
4870         BT_DBG("request for %s", hdev->name);
4871
4872         status = mgmt_le_support(hdev);
4873         if (status)
4874                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4875                                        status);
4876
4877         if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
4878                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4879                                        MGMT_STATUS_INVALID_PARAMS);
4880
4881         hci_dev_lock(hdev);
4882
4883         val = !!cp->val;
4884
4885         /* The following conditions are ones which mean that we should
4886          * not do any HCI communication but directly send a mgmt
4887          * response to user space (after toggling the flag if
4888          * necessary).
4889          */
4890         if (!hdev_is_powered(hdev) ||
4891             (val == hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
4892              (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE)) ||
4893             hci_conn_num(hdev, LE_LINK) > 0 ||
4894             (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
4895              hdev->le_scan_type == LE_SCAN_ACTIVE)) {
4896                 bool changed;
4897
4898                 if (cp->val) {
4899                         changed = !hci_dev_test_and_set_flag(hdev, HCI_ADVERTISING);
4900                         if (cp->val == 0x02)
4901                                 hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4902                         else
4903                                 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4904                 } else {
4905                         changed = hci_dev_test_and_clear_flag(hdev, HCI_ADVERTISING);
4906                         hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4907                 }
4908
4909                 err = send_settings_rsp(sk, MGMT_OP_SET_ADVERTISING, hdev);
4910                 if (err < 0)
4911                         goto unlock;
4912
4913                 if (changed)
4914                         err = new_settings(hdev, sk);
4915
4916                 goto unlock;
4917         }
4918
4919         if (pending_find(MGMT_OP_SET_ADVERTISING, hdev) ||
4920             pending_find(MGMT_OP_SET_LE, hdev)) {
4921                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
4922                                       MGMT_STATUS_BUSY);
4923                 goto unlock;
4924         }
4925
4926         cmd = mgmt_pending_add(sk, MGMT_OP_SET_ADVERTISING, hdev, data, len);
4927         if (!cmd) {
4928                 err = -ENOMEM;
4929                 goto unlock;
4930         }
4931
4932         hci_req_init(&req, hdev);
4933
4934         if (cp->val == 0x02)
4935                 hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4936         else
4937                 hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
4938
4939         cancel_adv_timeout(hdev);
4940
4941         if (val) {
4942                 /* Switch to instance "0" for the Set Advertising setting.
4943                  * We cannot use update_[adv|scan_rsp]_data() here as the
4944                  * HCI_ADVERTISING flag is not yet set.
4945                  */
4946                 update_inst_adv_data(&req, 0x00);
4947                 update_inst_scan_rsp_data(&req, 0x00);
4948                 enable_advertising(&req);
4949         } else {
4950                 disable_advertising(&req);
4951         }
4952
4953         err = hci_req_run(&req, set_advertising_complete);
4954         if (err < 0)
4955                 mgmt_pending_remove(cmd);
4956
4957 unlock:
4958         hci_dev_unlock(hdev);
4959         return err;
4960 }
4961
4962 static int set_static_address(struct sock *sk, struct hci_dev *hdev,
4963                               void *data, u16 len)
4964 {
4965         struct mgmt_cp_set_static_address *cp = data;
4966         int err;
4967
4968         BT_DBG("%s", hdev->name);
4969
4970         if (!lmp_le_capable(hdev))
4971                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS,
4972                                        MGMT_STATUS_NOT_SUPPORTED);
4973
4974         if (hdev_is_powered(hdev))
4975                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS,
4976                                        MGMT_STATUS_REJECTED);
4977
4978         if (bacmp(&cp->bdaddr, BDADDR_ANY)) {
4979                 if (!bacmp(&cp->bdaddr, BDADDR_NONE))
4980                         return mgmt_cmd_status(sk, hdev->id,
4981                                                MGMT_OP_SET_STATIC_ADDRESS,
4982                                                MGMT_STATUS_INVALID_PARAMS);
4983
4984                 /* Two most significant bits shall be set */
4985                 if ((cp->bdaddr.b[5] & 0xc0) != 0xc0)
4986                         return mgmt_cmd_status(sk, hdev->id,
4987                                                MGMT_OP_SET_STATIC_ADDRESS,
4988                                                MGMT_STATUS_INVALID_PARAMS);
4989         }
4990
4991         hci_dev_lock(hdev);
4992
4993         bacpy(&hdev->static_addr, &cp->bdaddr);
4994
4995         err = send_settings_rsp(sk, MGMT_OP_SET_STATIC_ADDRESS, hdev);
4996         if (err < 0)
4997                 goto unlock;
4998
4999         err = new_settings(hdev, sk);
5000
5001 unlock:
5002         hci_dev_unlock(hdev);
5003         return err;
5004 }
5005
5006 static int set_scan_params(struct sock *sk, struct hci_dev *hdev,
5007                            void *data, u16 len)
5008 {
5009         struct mgmt_cp_set_scan_params *cp = data;
5010         __u16 interval, window;
5011         int err;
5012
5013         BT_DBG("%s", hdev->name);
5014
5015         if (!lmp_le_capable(hdev))
5016                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5017                                        MGMT_STATUS_NOT_SUPPORTED);
5018
5019         interval = __le16_to_cpu(cp->interval);
5020
5021         if (interval < 0x0004 || interval > 0x4000)
5022                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5023                                        MGMT_STATUS_INVALID_PARAMS);
5024
5025         window = __le16_to_cpu(cp->window);
5026
5027         if (window < 0x0004 || window > 0x4000)
5028                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5029                                        MGMT_STATUS_INVALID_PARAMS);
5030
5031         if (window > interval)
5032                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS,
5033                                        MGMT_STATUS_INVALID_PARAMS);
5034
5035         hci_dev_lock(hdev);
5036
5037         hdev->le_scan_interval = interval;
5038         hdev->le_scan_window = window;
5039
5040         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 0,
5041                                 NULL, 0);
5042
5043         /* If background scan is running, restart it so new parameters are
5044          * loaded.
5045          */
5046         if (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
5047             hdev->discovery.state == DISCOVERY_STOPPED) {
5048                 struct hci_request req;
5049
5050                 hci_req_init(&req, hdev);
5051
5052                 hci_req_add_le_scan_disable(&req);
5053                 hci_req_add_le_passive_scan(&req);
5054
5055                 hci_req_run(&req, NULL);
5056         }
5057
5058         hci_dev_unlock(hdev);
5059
5060         return err;
5061 }
5062
5063 static void fast_connectable_complete(struct hci_dev *hdev, u8 status,
5064                                       u16 opcode)
5065 {
5066         struct mgmt_pending_cmd *cmd;
5067
5068         BT_DBG("status 0x%02x", status);
5069
5070         hci_dev_lock(hdev);
5071
5072         cmd = pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev);
5073         if (!cmd)
5074                 goto unlock;
5075
5076         if (status) {
5077                 mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5078                                 mgmt_status(status));
5079         } else {
5080                 struct mgmt_mode *cp = cmd->param;
5081
5082                 if (cp->val)
5083                         hci_dev_set_flag(hdev, HCI_FAST_CONNECTABLE);
5084                 else
5085                         hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE);
5086
5087                 send_settings_rsp(cmd->sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev);
5088                 new_settings(hdev, cmd->sk);
5089         }
5090
5091         mgmt_pending_remove(cmd);
5092
5093 unlock:
5094         hci_dev_unlock(hdev);
5095 }
5096
5097 static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev,
5098                                 void *data, u16 len)
5099 {
5100         struct mgmt_mode *cp = data;
5101         struct mgmt_pending_cmd *cmd;
5102         struct hci_request req;
5103         int err;
5104
5105         BT_DBG("%s", hdev->name);
5106
5107         if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) ||
5108             hdev->hci_ver < BLUETOOTH_VER_1_2)
5109                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5110                                        MGMT_STATUS_NOT_SUPPORTED);
5111
5112         if (cp->val != 0x00 && cp->val != 0x01)
5113                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5114                                        MGMT_STATUS_INVALID_PARAMS);
5115
5116         hci_dev_lock(hdev);
5117
5118         if (pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev)) {
5119                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5120                                       MGMT_STATUS_BUSY);
5121                 goto unlock;
5122         }
5123
5124         if (!!cp->val == hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) {
5125                 err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE,
5126                                         hdev);
5127                 goto unlock;
5128         }
5129
5130         if (!hdev_is_powered(hdev)) {
5131                 hci_dev_change_flag(hdev, HCI_FAST_CONNECTABLE);
5132                 err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE,
5133                                         hdev);
5134                 new_settings(hdev, sk);
5135                 goto unlock;
5136         }
5137
5138         cmd = mgmt_pending_add(sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev,
5139                                data, len);
5140         if (!cmd) {
5141                 err = -ENOMEM;
5142                 goto unlock;
5143         }
5144
5145         hci_req_init(&req, hdev);
5146
5147         write_fast_connectable(&req, cp->val);
5148
5149         err = hci_req_run(&req, fast_connectable_complete);
5150         if (err < 0) {
5151                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE,
5152                                       MGMT_STATUS_FAILED);
5153                 mgmt_pending_remove(cmd);
5154         }
5155
5156 unlock:
5157         hci_dev_unlock(hdev);
5158
5159         return err;
5160 }
5161
5162 static void set_bredr_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5163 {
5164         struct mgmt_pending_cmd *cmd;
5165
5166         BT_DBG("status 0x%02x", status);
5167
5168         hci_dev_lock(hdev);
5169
5170         cmd = pending_find(MGMT_OP_SET_BREDR, hdev);
5171         if (!cmd)
5172                 goto unlock;
5173
5174         if (status) {
5175                 u8 mgmt_err = mgmt_status(status);
5176
5177                 /* We need to restore the flag if related HCI commands
5178                  * failed.
5179                  */
5180                 hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED);
5181
5182                 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);
5183         } else {
5184                 send_settings_rsp(cmd->sk, MGMT_OP_SET_BREDR, hdev);
5185                 new_settings(hdev, cmd->sk);
5186         }
5187
5188         mgmt_pending_remove(cmd);
5189
5190 unlock:
5191         hci_dev_unlock(hdev);
5192 }
5193
5194 static int set_bredr(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
5195 {
5196         struct mgmt_mode *cp = data;
5197         struct mgmt_pending_cmd *cmd;
5198         struct hci_request req;
5199         int err;
5200
5201         BT_DBG("request for %s", hdev->name);
5202
5203         if (!lmp_bredr_capable(hdev) || !lmp_le_capable(hdev))
5204                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5205                                        MGMT_STATUS_NOT_SUPPORTED);
5206
5207         if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
5208                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5209                                        MGMT_STATUS_REJECTED);
5210
5211         if (cp->val != 0x00 && cp->val != 0x01)
5212                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5213                                        MGMT_STATUS_INVALID_PARAMS);
5214
5215         hci_dev_lock(hdev);
5216
5217         if (cp->val == hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
5218                 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev);
5219                 goto unlock;
5220         }
5221
5222         if (!hdev_is_powered(hdev)) {
5223                 if (!cp->val) {
5224                         hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
5225                         hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
5226                         hci_dev_clear_flag(hdev, HCI_LINK_SECURITY);
5227                         hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE);
5228                         hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
5229                 }
5230
5231                 hci_dev_change_flag(hdev, HCI_BREDR_ENABLED);
5232
5233                 err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev);
5234                 if (err < 0)
5235                         goto unlock;
5236
5237                 err = new_settings(hdev, sk);
5238                 goto unlock;
5239         }
5240
5241         /* Reject disabling when powered on */
5242         if (!cp->val) {
5243                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5244                                       MGMT_STATUS_REJECTED);
5245                 goto unlock;
5246         } else {
5247                 /* When configuring a dual-mode controller to operate
5248                  * with LE only and using a static address, then switching
5249                  * BR/EDR back on is not allowed.
5250                  *
5251                  * Dual-mode controllers shall operate with the public
5252                  * address as its identity address for BR/EDR and LE. So
5253                  * reject the attempt to create an invalid configuration.
5254                  *
5255                  * The same restrictions applies when secure connections
5256                  * has been enabled. For BR/EDR this is a controller feature
5257                  * while for LE it is a host stack feature. This means that
5258                  * switching BR/EDR back on when secure connections has been
5259                  * enabled is not a supported transaction.
5260                  */
5261                 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
5262                     (bacmp(&hdev->static_addr, BDADDR_ANY) ||
5263                      hci_dev_test_flag(hdev, HCI_SC_ENABLED))) {
5264                         err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5265                                               MGMT_STATUS_REJECTED);
5266                         goto unlock;
5267                 }
5268         }
5269
5270         if (pending_find(MGMT_OP_SET_BREDR, hdev)) {
5271                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR,
5272                                       MGMT_STATUS_BUSY);
5273                 goto unlock;
5274         }
5275
5276         cmd = mgmt_pending_add(sk, MGMT_OP_SET_BREDR, hdev, data, len);
5277         if (!cmd) {
5278                 err = -ENOMEM;
5279                 goto unlock;
5280         }
5281
5282         /* We need to flip the bit already here so that update_adv_data
5283          * generates the correct flags.
5284          */
5285         hci_dev_set_flag(hdev, HCI_BREDR_ENABLED);
5286
5287         hci_req_init(&req, hdev);
5288
5289         write_fast_connectable(&req, false);
5290         __hci_update_page_scan(&req);
5291
5292         /* Since only the advertising data flags will change, there
5293          * is no need to update the scan response data.
5294          */
5295         update_adv_data(&req);
5296
5297         err = hci_req_run(&req, set_bredr_complete);
5298         if (err < 0)
5299                 mgmt_pending_remove(cmd);
5300
5301 unlock:
5302         hci_dev_unlock(hdev);
5303         return err;
5304 }
5305
5306 static void sc_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5307 {
5308         struct mgmt_pending_cmd *cmd;
5309         struct mgmt_mode *cp;
5310
5311         BT_DBG("%s status %u", hdev->name, status);
5312
5313         hci_dev_lock(hdev);
5314
5315         cmd = pending_find(MGMT_OP_SET_SECURE_CONN, hdev);
5316         if (!cmd)
5317                 goto unlock;
5318
5319         if (status) {
5320                 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode,
5321                                 mgmt_status(status));
5322                 goto remove;
5323         }
5324
5325         cp = cmd->param;
5326
5327         switch (cp->val) {
5328         case 0x00:
5329                 hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
5330                 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5331                 break;
5332         case 0x01:
5333                 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
5334                 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5335                 break;
5336         case 0x02:
5337                 hci_dev_set_flag(hdev, HCI_SC_ENABLED);
5338                 hci_dev_set_flag(hdev, HCI_SC_ONLY);
5339                 break;
5340         }
5341
5342         send_settings_rsp(cmd->sk, MGMT_OP_SET_SECURE_CONN, hdev);
5343         new_settings(hdev, cmd->sk);
5344
5345 remove:
5346         mgmt_pending_remove(cmd);
5347 unlock:
5348         hci_dev_unlock(hdev);
5349 }
5350
5351 static int set_secure_conn(struct sock *sk, struct hci_dev *hdev,
5352                            void *data, u16 len)
5353 {
5354         struct mgmt_mode *cp = data;
5355         struct mgmt_pending_cmd *cmd;
5356         struct hci_request req;
5357         u8 val;
5358         int err;
5359
5360         BT_DBG("request for %s", hdev->name);
5361
5362         if (!lmp_sc_capable(hdev) &&
5363             !hci_dev_test_flag(hdev, HCI_LE_ENABLED))
5364                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5365                                        MGMT_STATUS_NOT_SUPPORTED);
5366
5367         if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
5368             lmp_sc_capable(hdev) &&
5369             !hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
5370                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5371                                        MGMT_STATUS_REJECTED);
5372
5373         if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
5374                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5375                                   MGMT_STATUS_INVALID_PARAMS);
5376
5377         hci_dev_lock(hdev);
5378
5379         if (!hdev_is_powered(hdev) || !lmp_sc_capable(hdev) ||
5380             !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
5381                 bool changed;
5382
5383                 if (cp->val) {
5384                         changed = !hci_dev_test_and_set_flag(hdev,
5385                                                              HCI_SC_ENABLED);
5386                         if (cp->val == 0x02)
5387                                 hci_dev_set_flag(hdev, HCI_SC_ONLY);
5388                         else
5389                                 hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5390                 } else {
5391                         changed = hci_dev_test_and_clear_flag(hdev,
5392                                                               HCI_SC_ENABLED);
5393                         hci_dev_clear_flag(hdev, HCI_SC_ONLY);
5394                 }
5395
5396                 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev);
5397                 if (err < 0)
5398                         goto failed;
5399
5400                 if (changed)
5401                         err = new_settings(hdev, sk);
5402
5403                 goto failed;
5404         }
5405
5406         if (pending_find(MGMT_OP_SET_SECURE_CONN, hdev)) {
5407                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN,
5408                                       MGMT_STATUS_BUSY);
5409                 goto failed;
5410         }
5411
5412         val = !!cp->val;
5413
5414         if (val == hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
5415             (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5416                 err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev);
5417                 goto failed;
5418         }
5419
5420         cmd = mgmt_pending_add(sk, MGMT_OP_SET_SECURE_CONN, hdev, data, len);
5421         if (!cmd) {
5422                 err = -ENOMEM;
5423                 goto failed;
5424         }
5425
5426         hci_req_init(&req, hdev);
5427         hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT, 1, &val);
5428         err = hci_req_run(&req, sc_enable_complete);
5429         if (err < 0) {
5430                 mgmt_pending_remove(cmd);
5431                 goto failed;
5432         }
5433
5434 failed:
5435         hci_dev_unlock(hdev);
5436         return err;
5437 }
5438
5439 static int set_debug_keys(struct sock *sk, struct hci_dev *hdev,
5440                           void *data, u16 len)
5441 {
5442         struct mgmt_mode *cp = data;
5443         bool changed, use_changed;
5444         int err;
5445
5446         BT_DBG("request for %s", hdev->name);
5447
5448         if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02)
5449                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEBUG_KEYS,
5450                                        MGMT_STATUS_INVALID_PARAMS);
5451
5452         hci_dev_lock(hdev);
5453
5454         if (cp->val)
5455                 changed = !hci_dev_test_and_set_flag(hdev, HCI_KEEP_DEBUG_KEYS);
5456         else
5457                 changed = hci_dev_test_and_clear_flag(hdev,
5458                                                       HCI_KEEP_DEBUG_KEYS);
5459
5460         if (cp->val == 0x02)
5461                 use_changed = !hci_dev_test_and_set_flag(hdev,
5462                                                          HCI_USE_DEBUG_KEYS);
5463         else
5464                 use_changed = hci_dev_test_and_clear_flag(hdev,
5465                                                           HCI_USE_DEBUG_KEYS);
5466
5467         if (hdev_is_powered(hdev) && use_changed &&
5468             hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
5469                 u8 mode = (cp->val == 0x02) ? 0x01 : 0x00;
5470                 hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE,
5471                              sizeof(mode), &mode);
5472         }
5473
5474         err = send_settings_rsp(sk, MGMT_OP_SET_DEBUG_KEYS, hdev);
5475         if (err < 0)
5476                 goto unlock;
5477
5478         if (changed)
5479                 err = new_settings(hdev, sk);
5480
5481 unlock:
5482         hci_dev_unlock(hdev);
5483         return err;
5484 }
5485
5486 static int set_privacy(struct sock *sk, struct hci_dev *hdev, void *cp_data,
5487                        u16 len)
5488 {
5489         struct mgmt_cp_set_privacy *cp = cp_data;
5490         bool changed;
5491         int err;
5492
5493         BT_DBG("request for %s", hdev->name);
5494
5495         if (!lmp_le_capable(hdev))
5496                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
5497                                        MGMT_STATUS_NOT_SUPPORTED);
5498
5499         if (cp->privacy != 0x00 && cp->privacy != 0x01)
5500                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
5501                                        MGMT_STATUS_INVALID_PARAMS);
5502
5503         if (hdev_is_powered(hdev))
5504                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY,
5505                                        MGMT_STATUS_REJECTED);
5506
5507         hci_dev_lock(hdev);
5508
5509         /* If user space supports this command it is also expected to
5510          * handle IRKs. Therefore, set the HCI_RPA_RESOLVING flag.
5511          */
5512         hci_dev_set_flag(hdev, HCI_RPA_RESOLVING);
5513
5514         if (cp->privacy) {
5515                 changed = !hci_dev_test_and_set_flag(hdev, HCI_PRIVACY);
5516                 memcpy(hdev->irk, cp->irk, sizeof(hdev->irk));
5517                 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
5518         } else {
5519                 changed = hci_dev_test_and_clear_flag(hdev, HCI_PRIVACY);
5520                 memset(hdev->irk, 0, sizeof(hdev->irk));
5521                 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
5522         }
5523
5524         err = send_settings_rsp(sk, MGMT_OP_SET_PRIVACY, hdev);
5525         if (err < 0)
5526                 goto unlock;
5527
5528         if (changed)
5529                 err = new_settings(hdev, sk);
5530
5531 unlock:
5532         hci_dev_unlock(hdev);
5533         return err;
5534 }
5535
5536 static bool irk_is_valid(struct mgmt_irk_info *irk)
5537 {
5538         switch (irk->addr.type) {
5539         case BDADDR_LE_PUBLIC:
5540                 return true;
5541
5542         case BDADDR_LE_RANDOM:
5543                 /* Two most significant bits shall be set */
5544                 if ((irk->addr.bdaddr.b[5] & 0xc0) != 0xc0)
5545                         return false;
5546                 return true;
5547         }
5548
5549         return false;
5550 }
5551
5552 static int load_irks(struct sock *sk, struct hci_dev *hdev, void *cp_data,
5553                      u16 len)
5554 {
5555         struct mgmt_cp_load_irks *cp = cp_data;
5556         const u16 max_irk_count = ((U16_MAX - sizeof(*cp)) /
5557                                    sizeof(struct mgmt_irk_info));
5558         u16 irk_count, expected_len;
5559         int i, err;
5560
5561         BT_DBG("request for %s", hdev->name);
5562
5563         if (!lmp_le_capable(hdev))
5564                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5565                                        MGMT_STATUS_NOT_SUPPORTED);
5566
5567         irk_count = __le16_to_cpu(cp->irk_count);
5568         if (irk_count > max_irk_count) {
5569                 BT_ERR("load_irks: too big irk_count value %u", irk_count);
5570                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5571                                        MGMT_STATUS_INVALID_PARAMS);
5572         }
5573
5574         expected_len = sizeof(*cp) + irk_count * sizeof(struct mgmt_irk_info);
5575         if (expected_len != len) {
5576                 BT_ERR("load_irks: expected %u bytes, got %u bytes",
5577                        expected_len, len);
5578                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS,
5579                                        MGMT_STATUS_INVALID_PARAMS);
5580         }
5581
5582         BT_DBG("%s irk_count %u", hdev->name, irk_count);
5583
5584         for (i = 0; i < irk_count; i++) {
5585                 struct mgmt_irk_info *key = &cp->irks[i];
5586
5587                 if (!irk_is_valid(key))
5588                         return mgmt_cmd_status(sk, hdev->id,
5589                                                MGMT_OP_LOAD_IRKS,
5590                                                MGMT_STATUS_INVALID_PARAMS);
5591         }
5592
5593         hci_dev_lock(hdev);
5594
5595         hci_smp_irks_clear(hdev);
5596
5597         for (i = 0; i < irk_count; i++) {
5598                 struct mgmt_irk_info *irk = &cp->irks[i];
5599                 u8 addr_type;
5600
5601                 if (irk->addr.type == BDADDR_LE_PUBLIC)
5602                         addr_type = ADDR_LE_DEV_PUBLIC;
5603                 else
5604                         addr_type = ADDR_LE_DEV_RANDOM;
5605
5606                 hci_add_irk(hdev, &irk->addr.bdaddr, addr_type, irk->val,
5607                             BDADDR_ANY);
5608         }
5609
5610         hci_dev_set_flag(hdev, HCI_RPA_RESOLVING);
5611
5612         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_IRKS, 0, NULL, 0);
5613
5614         hci_dev_unlock(hdev);
5615
5616         return err;
5617 }
5618
5619 static bool ltk_is_valid(struct mgmt_ltk_info *key)
5620 {
5621         if (key->master != 0x00 && key->master != 0x01)
5622                 return false;
5623
5624         switch (key->addr.type) {
5625         case BDADDR_LE_PUBLIC:
5626                 return true;
5627
5628         case BDADDR_LE_RANDOM:
5629                 /* Two most significant bits shall be set */
5630                 if ((key->addr.bdaddr.b[5] & 0xc0) != 0xc0)
5631                         return false;
5632                 return true;
5633         }
5634
5635         return false;
5636 }
5637
5638 static int load_long_term_keys(struct sock *sk, struct hci_dev *hdev,
5639                                void *cp_data, u16 len)
5640 {
5641         struct mgmt_cp_load_long_term_keys *cp = cp_data;
5642         const u16 max_key_count = ((U16_MAX - sizeof(*cp)) /
5643                                    sizeof(struct mgmt_ltk_info));
5644         u16 key_count, expected_len;
5645         int i, err;
5646
5647         BT_DBG("request for %s", hdev->name);
5648
5649         if (!lmp_le_capable(hdev))
5650                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5651                                        MGMT_STATUS_NOT_SUPPORTED);
5652
5653         key_count = __le16_to_cpu(cp->key_count);
5654         if (key_count > max_key_count) {
5655                 BT_ERR("load_ltks: too big key_count value %u", key_count);
5656                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5657                                        MGMT_STATUS_INVALID_PARAMS);
5658         }
5659
5660         expected_len = sizeof(*cp) + key_count *
5661                                         sizeof(struct mgmt_ltk_info);
5662         if (expected_len != len) {
5663                 BT_ERR("load_keys: expected %u bytes, got %u bytes",
5664                        expected_len, len);
5665                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
5666                                        MGMT_STATUS_INVALID_PARAMS);
5667         }
5668
5669         BT_DBG("%s key_count %u", hdev->name, key_count);
5670
5671         for (i = 0; i < key_count; i++) {
5672                 struct mgmt_ltk_info *key = &cp->keys[i];
5673
5674                 if (!ltk_is_valid(key))
5675                         return mgmt_cmd_status(sk, hdev->id,
5676                                                MGMT_OP_LOAD_LONG_TERM_KEYS,
5677                                                MGMT_STATUS_INVALID_PARAMS);
5678         }
5679
5680         hci_dev_lock(hdev);
5681
5682         hci_smp_ltks_clear(hdev);
5683
5684         for (i = 0; i < key_count; i++) {
5685                 struct mgmt_ltk_info *key = &cp->keys[i];
5686                 u8 type, addr_type, authenticated;
5687
5688                 if (key->addr.type == BDADDR_LE_PUBLIC)
5689                         addr_type = ADDR_LE_DEV_PUBLIC;
5690                 else
5691                         addr_type = ADDR_LE_DEV_RANDOM;
5692
5693                 switch (key->type) {
5694                 case MGMT_LTK_UNAUTHENTICATED:
5695                         authenticated = 0x00;
5696                         type = key->master ? SMP_LTK : SMP_LTK_SLAVE;
5697                         break;
5698                 case MGMT_LTK_AUTHENTICATED:
5699                         authenticated = 0x01;
5700                         type = key->master ? SMP_LTK : SMP_LTK_SLAVE;
5701                         break;
5702                 case MGMT_LTK_P256_UNAUTH:
5703                         authenticated = 0x00;
5704                         type = SMP_LTK_P256;
5705                         break;
5706                 case MGMT_LTK_P256_AUTH:
5707                         authenticated = 0x01;
5708                         type = SMP_LTK_P256;
5709                         break;
5710                 case MGMT_LTK_P256_DEBUG:
5711                         authenticated = 0x00;
5712                         type = SMP_LTK_P256_DEBUG;
5713                 default:
5714                         continue;
5715                 }
5716
5717                 hci_add_ltk(hdev, &key->addr.bdaddr, addr_type, type,
5718                             authenticated, key->val, key->enc_size, key->ediv,
5719                             key->rand);
5720         }
5721
5722         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 0,
5723                            NULL, 0);
5724
5725         hci_dev_unlock(hdev);
5726
5727         return err;
5728 }
5729
5730 static int conn_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
5731 {
5732         struct hci_conn *conn = cmd->user_data;
5733         struct mgmt_rp_get_conn_info rp;
5734         int err;
5735
5736         memcpy(&rp.addr, cmd->param, sizeof(rp.addr));
5737
5738         if (status == MGMT_STATUS_SUCCESS) {
5739                 rp.rssi = conn->rssi;
5740                 rp.tx_power = conn->tx_power;
5741                 rp.max_tx_power = conn->max_tx_power;
5742         } else {
5743                 rp.rssi = HCI_RSSI_INVALID;
5744                 rp.tx_power = HCI_TX_POWER_INVALID;
5745                 rp.max_tx_power = HCI_TX_POWER_INVALID;
5746         }
5747
5748         err = mgmt_cmd_complete(cmd->sk, cmd->index, MGMT_OP_GET_CONN_INFO,
5749                                 status, &rp, sizeof(rp));
5750
5751         hci_conn_drop(conn);
5752         hci_conn_put(conn);
5753
5754         return err;
5755 }
5756
5757 static void conn_info_refresh_complete(struct hci_dev *hdev, u8 hci_status,
5758                                        u16 opcode)
5759 {
5760         struct hci_cp_read_rssi *cp;
5761         struct mgmt_pending_cmd *cmd;
5762         struct hci_conn *conn;
5763         u16 handle;
5764         u8 status;
5765
5766         BT_DBG("status 0x%02x", hci_status);
5767
5768         hci_dev_lock(hdev);
5769
5770         /* Commands sent in request are either Read RSSI or Read Transmit Power
5771          * Level so we check which one was last sent to retrieve connection
5772          * handle.  Both commands have handle as first parameter so it's safe to
5773          * cast data on the same command struct.
5774          *
5775          * First command sent is always Read RSSI and we fail only if it fails.
5776          * In other case we simply override error to indicate success as we
5777          * already remembered if TX power value is actually valid.
5778          */
5779         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_RSSI);
5780         if (!cp) {
5781                 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
5782                 status = MGMT_STATUS_SUCCESS;
5783         } else {
5784                 status = mgmt_status(hci_status);
5785         }
5786
5787         if (!cp) {
5788                 BT_ERR("invalid sent_cmd in conn_info response");
5789                 goto unlock;
5790         }
5791
5792         handle = __le16_to_cpu(cp->handle);
5793         conn = hci_conn_hash_lookup_handle(hdev, handle);
5794         if (!conn) {
5795                 BT_ERR("unknown handle (%d) in conn_info response", handle);
5796                 goto unlock;
5797         }
5798
5799         cmd = pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn);
5800         if (!cmd)
5801                 goto unlock;
5802
5803         cmd->cmd_complete(cmd, status);
5804         mgmt_pending_remove(cmd);
5805
5806 unlock:
5807         hci_dev_unlock(hdev);
5808 }
5809
5810 static int get_conn_info(struct sock *sk, struct hci_dev *hdev, void *data,
5811                          u16 len)
5812 {
5813         struct mgmt_cp_get_conn_info *cp = data;
5814         struct mgmt_rp_get_conn_info rp;
5815         struct hci_conn *conn;
5816         unsigned long conn_info_age;
5817         int err = 0;
5818
5819         BT_DBG("%s", hdev->name);
5820
5821         memset(&rp, 0, sizeof(rp));
5822         bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
5823         rp.addr.type = cp->addr.type;
5824
5825         if (!bdaddr_type_is_valid(cp->addr.type))
5826                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5827                                          MGMT_STATUS_INVALID_PARAMS,
5828                                          &rp, sizeof(rp));
5829
5830         hci_dev_lock(hdev);
5831
5832         if (!hdev_is_powered(hdev)) {
5833                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5834                                         MGMT_STATUS_NOT_POWERED, &rp,
5835                                         sizeof(rp));
5836                 goto unlock;
5837         }
5838
5839         if (cp->addr.type == BDADDR_BREDR)
5840                 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
5841                                                &cp->addr.bdaddr);
5842         else
5843                 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr);
5844
5845         if (!conn || conn->state != BT_CONNECTED) {
5846                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5847                                         MGMT_STATUS_NOT_CONNECTED, &rp,
5848                                         sizeof(rp));
5849                 goto unlock;
5850         }
5851
5852         if (pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn)) {
5853                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5854                                         MGMT_STATUS_BUSY, &rp, sizeof(rp));
5855                 goto unlock;
5856         }
5857
5858         /* To avoid client trying to guess when to poll again for information we
5859          * calculate conn info age as random value between min/max set in hdev.
5860          */
5861         conn_info_age = hdev->conn_info_min_age +
5862                         prandom_u32_max(hdev->conn_info_max_age -
5863                                         hdev->conn_info_min_age);
5864
5865         /* Query controller to refresh cached values if they are too old or were
5866          * never read.
5867          */
5868         if (time_after(jiffies, conn->conn_info_timestamp +
5869                        msecs_to_jiffies(conn_info_age)) ||
5870             !conn->conn_info_timestamp) {
5871                 struct hci_request req;
5872                 struct hci_cp_read_tx_power req_txp_cp;
5873                 struct hci_cp_read_rssi req_rssi_cp;
5874                 struct mgmt_pending_cmd *cmd;
5875
5876                 hci_req_init(&req, hdev);
5877                 req_rssi_cp.handle = cpu_to_le16(conn->handle);
5878                 hci_req_add(&req, HCI_OP_READ_RSSI, sizeof(req_rssi_cp),
5879                             &req_rssi_cp);
5880
5881                 /* For LE links TX power does not change thus we don't need to
5882                  * query for it once value is known.
5883                  */
5884                 if (!bdaddr_type_is_le(cp->addr.type) ||
5885                     conn->tx_power == HCI_TX_POWER_INVALID) {
5886                         req_txp_cp.handle = cpu_to_le16(conn->handle);
5887                         req_txp_cp.type = 0x00;
5888                         hci_req_add(&req, HCI_OP_READ_TX_POWER,
5889                                     sizeof(req_txp_cp), &req_txp_cp);
5890                 }
5891
5892                 /* Max TX power needs to be read only once per connection */
5893                 if (conn->max_tx_power == HCI_TX_POWER_INVALID) {
5894                         req_txp_cp.handle = cpu_to_le16(conn->handle);
5895                         req_txp_cp.type = 0x01;
5896                         hci_req_add(&req, HCI_OP_READ_TX_POWER,
5897                                     sizeof(req_txp_cp), &req_txp_cp);
5898                 }
5899
5900                 err = hci_req_run(&req, conn_info_refresh_complete);
5901                 if (err < 0)
5902                         goto unlock;
5903
5904                 cmd = mgmt_pending_add(sk, MGMT_OP_GET_CONN_INFO, hdev,
5905                                        data, len);
5906                 if (!cmd) {
5907                         err = -ENOMEM;
5908                         goto unlock;
5909                 }
5910
5911                 hci_conn_hold(conn);
5912                 cmd->user_data = hci_conn_get(conn);
5913                 cmd->cmd_complete = conn_info_cmd_complete;
5914
5915                 conn->conn_info_timestamp = jiffies;
5916         } else {
5917                 /* Cache is valid, just reply with values cached in hci_conn */
5918                 rp.rssi = conn->rssi;
5919                 rp.tx_power = conn->tx_power;
5920                 rp.max_tx_power = conn->max_tx_power;
5921
5922                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO,
5923                                         MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
5924         }
5925
5926 unlock:
5927         hci_dev_unlock(hdev);
5928         return err;
5929 }
5930
5931 static int clock_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status)
5932 {
5933         struct hci_conn *conn = cmd->user_data;
5934         struct mgmt_rp_get_clock_info rp;
5935         struct hci_dev *hdev;
5936         int err;
5937
5938         memset(&rp, 0, sizeof(rp));
5939         memcpy(&rp.addr, &cmd->param, sizeof(rp.addr));
5940
5941         if (status)
5942                 goto complete;
5943
5944         hdev = hci_dev_get(cmd->index);
5945         if (hdev) {
5946                 rp.local_clock = cpu_to_le32(hdev->clock);
5947                 hci_dev_put(hdev);
5948         }
5949
5950         if (conn) {
5951                 rp.piconet_clock = cpu_to_le32(conn->clock);
5952                 rp.accuracy = cpu_to_le16(conn->clock_accuracy);
5953         }
5954
5955 complete:
5956         err = mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, &rp,
5957                                 sizeof(rp));
5958
5959         if (conn) {
5960                 hci_conn_drop(conn);
5961                 hci_conn_put(conn);
5962         }
5963
5964         return err;
5965 }
5966
5967 static void get_clock_info_complete(struct hci_dev *hdev, u8 status, u16 opcode)
5968 {
5969         struct hci_cp_read_clock *hci_cp;
5970         struct mgmt_pending_cmd *cmd;
5971         struct hci_conn *conn;
5972
5973         BT_DBG("%s status %u", hdev->name, status);
5974
5975         hci_dev_lock(hdev);
5976
5977         hci_cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
5978         if (!hci_cp)
5979                 goto unlock;
5980
5981         if (hci_cp->which) {
5982                 u16 handle = __le16_to_cpu(hci_cp->handle);
5983                 conn = hci_conn_hash_lookup_handle(hdev, handle);
5984         } else {
5985                 conn = NULL;
5986         }
5987
5988         cmd = pending_find_data(MGMT_OP_GET_CLOCK_INFO, hdev, conn);
5989         if (!cmd)
5990                 goto unlock;
5991
5992         cmd->cmd_complete(cmd, mgmt_status(status));
5993         mgmt_pending_remove(cmd);
5994
5995 unlock:
5996         hci_dev_unlock(hdev);
5997 }
5998
5999 static int get_clock_info(struct sock *sk, struct hci_dev *hdev, void *data,
6000                          u16 len)
6001 {
6002         struct mgmt_cp_get_clock_info *cp = data;
6003         struct mgmt_rp_get_clock_info rp;
6004         struct hci_cp_read_clock hci_cp;
6005         struct mgmt_pending_cmd *cmd;
6006         struct hci_request req;
6007         struct hci_conn *conn;
6008         int err;
6009
6010         BT_DBG("%s", hdev->name);
6011
6012         memset(&rp, 0, sizeof(rp));
6013         bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
6014         rp.addr.type = cp->addr.type;
6015
6016         if (cp->addr.type != BDADDR_BREDR)
6017                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO,
6018                                          MGMT_STATUS_INVALID_PARAMS,
6019                                          &rp, sizeof(rp));
6020
6021         hci_dev_lock(hdev);
6022
6023         if (!hdev_is_powered(hdev)) {
6024                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO,
6025                                         MGMT_STATUS_NOT_POWERED, &rp,
6026                                         sizeof(rp));
6027                 goto unlock;
6028         }
6029
6030         if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
6031                 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK,
6032                                                &cp->addr.bdaddr);
6033                 if (!conn || conn->state != BT_CONNECTED) {
6034                         err = mgmt_cmd_complete(sk, hdev->id,
6035                                                 MGMT_OP_GET_CLOCK_INFO,
6036                                                 MGMT_STATUS_NOT_CONNECTED,
6037                                                 &rp, sizeof(rp));
6038                         goto unlock;
6039                 }
6040         } else {
6041                 conn = NULL;
6042         }
6043
6044         cmd = mgmt_pending_add(sk, MGMT_OP_GET_CLOCK_INFO, hdev, data, len);
6045         if (!cmd) {
6046                 err = -ENOMEM;
6047                 goto unlock;
6048         }
6049
6050         cmd->cmd_complete = clock_info_cmd_complete;
6051
6052         hci_req_init(&req, hdev);
6053
6054         memset(&hci_cp, 0, sizeof(hci_cp));
6055         hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp);
6056
6057         if (conn) {
6058                 hci_conn_hold(conn);
6059                 cmd->user_data = hci_conn_get(conn);
6060
6061                 hci_cp.handle = cpu_to_le16(conn->handle);
6062                 hci_cp.which = 0x01; /* Piconet clock */
6063                 hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp);
6064         }
6065
6066         err = hci_req_run(&req, get_clock_info_complete);
6067         if (err < 0)
6068                 mgmt_pending_remove(cmd);
6069
6070 unlock:
6071         hci_dev_unlock(hdev);
6072         return err;
6073 }
6074
6075 static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type)
6076 {
6077         struct hci_conn *conn;
6078
6079         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr);
6080         if (!conn)
6081                 return false;
6082
6083         if (conn->dst_type != type)
6084                 return false;
6085
6086         if (conn->state != BT_CONNECTED)
6087                 return false;
6088
6089         return true;
6090 }
6091
6092 /* This function requires the caller holds hdev->lock */
6093 static int hci_conn_params_set(struct hci_request *req, bdaddr_t *addr,
6094                                u8 addr_type, u8 auto_connect)
6095 {
6096         struct hci_dev *hdev = req->hdev;
6097         struct hci_conn_params *params;
6098
6099         params = hci_conn_params_add(hdev, addr, addr_type);
6100         if (!params)
6101                 return -EIO;
6102
6103         if (params->auto_connect == auto_connect)
6104                 return 0;
6105
6106         list_del_init(&params->action);
6107
6108         switch (auto_connect) {
6109         case HCI_AUTO_CONN_DISABLED:
6110         case HCI_AUTO_CONN_LINK_LOSS:
6111                 /* If auto connect is being disabled when we're trying to
6112                  * connect to device, keep connecting.
6113                  */
6114                 if (params->explicit_connect)
6115                         list_add(&params->action, &hdev->pend_le_conns);
6116
6117                 __hci_update_background_scan(req);
6118                 break;
6119         case HCI_AUTO_CONN_REPORT:
6120                 if (params->explicit_connect)
6121                         list_add(&params->action, &hdev->pend_le_conns);
6122                 else
6123                         list_add(&params->action, &hdev->pend_le_reports);
6124                 __hci_update_background_scan(req);
6125                 break;
6126         case HCI_AUTO_CONN_DIRECT:
6127         case HCI_AUTO_CONN_ALWAYS:
6128                 if (!is_connected(hdev, addr, addr_type)) {
6129                         list_add(&params->action, &hdev->pend_le_conns);
6130                         /* If we are in scan phase of connecting, we were
6131                          * already added to pend_le_conns and scanning.
6132                          */
6133                         if (params->auto_connect != HCI_AUTO_CONN_EXPLICIT)
6134                                 __hci_update_background_scan(req);
6135                 }
6136                 break;
6137         }
6138
6139         params->auto_connect = auto_connect;
6140
6141         BT_DBG("addr %pMR (type %u) auto_connect %u", addr, addr_type,
6142                auto_connect);
6143
6144         return 0;
6145 }
6146
6147 static void device_added(struct sock *sk, struct hci_dev *hdev,
6148                          bdaddr_t *bdaddr, u8 type, u8 action)
6149 {
6150         struct mgmt_ev_device_added ev;
6151
6152         bacpy(&ev.addr.bdaddr, bdaddr);
6153         ev.addr.type = type;
6154         ev.action = action;
6155
6156         mgmt_event(MGMT_EV_DEVICE_ADDED, hdev, &ev, sizeof(ev), sk);
6157 }
6158
6159 static void add_device_complete(struct hci_dev *hdev, u8 status, u16 opcode)
6160 {
6161         struct mgmt_pending_cmd *cmd;
6162
6163         BT_DBG("status 0x%02x", status);
6164
6165         hci_dev_lock(hdev);
6166
6167         cmd = pending_find(MGMT_OP_ADD_DEVICE, hdev);
6168         if (!cmd)
6169                 goto unlock;
6170
6171         cmd->cmd_complete(cmd, mgmt_status(status));
6172         mgmt_pending_remove(cmd);
6173
6174 unlock:
6175         hci_dev_unlock(hdev);
6176 }
6177
6178 static int add_device(struct sock *sk, struct hci_dev *hdev,
6179                       void *data, u16 len)
6180 {
6181         struct mgmt_cp_add_device *cp = data;
6182         struct mgmt_pending_cmd *cmd;
6183         struct hci_request req;
6184         u8 auto_conn, addr_type;
6185         int err;
6186
6187         BT_DBG("%s", hdev->name);
6188
6189         if (!bdaddr_type_is_valid(cp->addr.type) ||
6190             !bacmp(&cp->addr.bdaddr, BDADDR_ANY))
6191                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,
6192                                          MGMT_STATUS_INVALID_PARAMS,
6193                                          &cp->addr, sizeof(cp->addr));
6194
6195         if (cp->action != 0x00 && cp->action != 0x01 && cp->action != 0x02)
6196                 return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,
6197                                          MGMT_STATUS_INVALID_PARAMS,
6198                                          &cp->addr, sizeof(cp->addr));
6199
6200         hci_req_init(&req, hdev);
6201
6202         hci_dev_lock(hdev);
6203
6204         cmd = mgmt_pending_add(sk, MGMT_OP_ADD_DEVICE, hdev, data, len);
6205         if (!cmd) {
6206                 err = -ENOMEM;
6207                 goto unlock;
6208         }
6209
6210         cmd->cmd_complete = addr_cmd_complete;
6211
6212         if (cp->addr.type == BDADDR_BREDR) {
6213                 /* Only incoming connections action is supported for now */
6214                 if (cp->action != 0x01) {
6215                         err = cmd->cmd_complete(cmd,
6216                                                 MGMT_STATUS_INVALID_PARAMS);
6217                         mgmt_pending_remove(cmd);
6218                         goto unlock;
6219                 }
6220
6221                 err = hci_bdaddr_list_add(&hdev->whitelist, &cp->addr.bdaddr,
6222                                           cp->addr.type);
6223                 if (err)
6224                         goto unlock;
6225
6226                 __hci_update_page_scan(&req);
6227
6228                 goto added;
6229         }
6230
6231         if (cp->addr.type == BDADDR_LE_PUBLIC)
6232                 addr_type = ADDR_LE_DEV_PUBLIC;
6233         else
6234                 addr_type = ADDR_LE_DEV_RANDOM;
6235
6236         if (cp->action == 0x02)
6237                 auto_conn = HCI_AUTO_CONN_ALWAYS;
6238         else if (cp->action == 0x01)
6239                 auto_conn = HCI_AUTO_CONN_DIRECT;
6240         else
6241                 auto_conn = HCI_AUTO_CONN_REPORT;
6242
6243         /* Kernel internally uses conn_params with resolvable private
6244          * address, but Add Device allows only identity addresses.
6245          * Make sure it is enforced before calling
6246          * hci_conn_params_lookup.
6247          */
6248         if (!hci_is_identity_address(&cp->addr.bdaddr, addr_type)) {
6249                 err = cmd->cmd_complete(cmd, MGMT_STATUS_INVALID_PARAMS);
6250                 mgmt_pending_remove(cmd);
6251                 goto unlock;
6252         }
6253
6254         /* If the connection parameters don't exist for this device,
6255          * they will be created and configured with defaults.
6256          */
6257         if (hci_conn_params_set(&req, &cp->addr.bdaddr, addr_type,
6258                                 auto_conn) < 0) {
6259                 err = cmd->cmd_complete(cmd, MGMT_STATUS_FAILED);
6260                 mgmt_pending_remove(cmd);
6261                 goto unlock;
6262         }
6263
6264 added:
6265         device_added(sk, hdev, &cp->addr.bdaddr, cp->addr.type, cp->action);
6266
6267         err = hci_req_run(&req, add_device_complete);
6268         if (err < 0) {
6269                 /* ENODATA means no HCI commands were needed (e.g. if
6270                  * the adapter is powered off).
6271                  */
6272                 if (err == -ENODATA)
6273                         err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS);
6274                 mgmt_pending_remove(cmd);
6275         }
6276
6277 unlock:
6278         hci_dev_unlock(hdev);
6279         return err;
6280 }
6281
6282 static void device_removed(struct sock *sk, struct hci_dev *hdev,
6283                            bdaddr_t *bdaddr, u8 type)
6284 {
6285         struct mgmt_ev_device_removed ev;
6286
6287         bacpy(&ev.addr.bdaddr, bdaddr);
6288         ev.addr.type = type;
6289
6290         mgmt_event(MGMT_EV_DEVICE_REMOVED, hdev, &ev, sizeof(ev), sk);
6291 }
6292
6293 static void remove_device_complete(struct hci_dev *hdev, u8 status, u16 opcode)
6294 {
6295         struct mgmt_pending_cmd *cmd;
6296
6297         BT_DBG("status 0x%02x", status);
6298
6299         hci_dev_lock(hdev);
6300
6301         cmd = pending_find(MGMT_OP_REMOVE_DEVICE, hdev);
6302         if (!cmd)
6303                 goto unlock;
6304
6305         cmd->cmd_complete(cmd, mgmt_status(status));
6306         mgmt_pending_remove(cmd);
6307
6308 unlock:
6309         hci_dev_unlock(hdev);
6310 }
6311
6312 static int remove_device(struct sock *sk, struct hci_dev *hdev,
6313                          void *data, u16 len)
6314 {
6315         struct mgmt_cp_remove_device *cp = data;
6316         struct mgmt_pending_cmd *cmd;
6317         struct hci_request req;
6318         int err;
6319
6320         BT_DBG("%s", hdev->name);
6321
6322         hci_req_init(&req, hdev);
6323
6324         hci_dev_lock(hdev);
6325
6326         cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_DEVICE, hdev, data, len);
6327         if (!cmd) {
6328                 err = -ENOMEM;
6329                 goto unlock;
6330         }
6331
6332         cmd->cmd_complete = addr_cmd_complete;
6333
6334         if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) {
6335                 struct hci_conn_params *params;
6336                 u8 addr_type;
6337
6338                 if (!bdaddr_type_is_valid(cp->addr.type)) {
6339                         err = cmd->cmd_complete(cmd,
6340                                                 MGMT_STATUS_INVALID_PARAMS);
6341                         mgmt_pending_remove(cmd);
6342                         goto unlock;
6343                 }
6344
6345                 if (cp->addr.type == BDADDR_BREDR) {
6346                         err = hci_bdaddr_list_del(&hdev->whitelist,
6347                                                   &cp->addr.bdaddr,
6348                                                   cp->addr.type);
6349                         if (err) {
6350                                 err = cmd->cmd_complete(cmd,
6351                                                         MGMT_STATUS_INVALID_PARAMS);
6352                                 mgmt_pending_remove(cmd);
6353                                 goto unlock;
6354                         }
6355
6356                         __hci_update_page_scan(&req);
6357
6358                         device_removed(sk, hdev, &cp->addr.bdaddr,
6359                                        cp->addr.type);
6360                         goto complete;
6361                 }
6362
6363                 if (cp->addr.type == BDADDR_LE_PUBLIC)
6364                         addr_type = ADDR_LE_DEV_PUBLIC;
6365                 else
6366                         addr_type = ADDR_LE_DEV_RANDOM;
6367
6368                 /* Kernel internally uses conn_params with resolvable private
6369                  * address, but Remove Device allows only identity addresses.
6370                  * Make sure it is enforced before calling
6371                  * hci_conn_params_lookup.
6372                  */
6373                 if (!hci_is_identity_address(&cp->addr.bdaddr, addr_type)) {
6374                         err = cmd->cmd_complete(cmd,
6375                                                 MGMT_STATUS_INVALID_PARAMS);
6376                         mgmt_pending_remove(cmd);
6377                         goto unlock;
6378                 }
6379
6380                 params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr,
6381                                                 addr_type);
6382                 if (!params) {
6383                         err = cmd->cmd_complete(cmd,
6384                                                 MGMT_STATUS_INVALID_PARAMS);
6385                         mgmt_pending_remove(cmd);
6386                         goto unlock;
6387                 }
6388
6389                 if (params->auto_connect == HCI_AUTO_CONN_DISABLED ||
6390                     params->auto_connect == HCI_AUTO_CONN_EXPLICIT) {
6391                         err = cmd->cmd_complete(cmd,
6392                                                 MGMT_STATUS_INVALID_PARAMS);
6393                         mgmt_pending_remove(cmd);
6394                         goto unlock;
6395                 }
6396
6397                 list_del(&params->action);
6398                 list_del(&params->list);
6399                 kfree(params);
6400                 __hci_update_background_scan(&req);
6401
6402                 device_removed(sk, hdev, &cp->addr.bdaddr, cp->addr.type);
6403         } else {
6404                 struct hci_conn_params *p, *tmp;
6405                 struct bdaddr_list *b, *btmp;
6406
6407                 if (cp->addr.type) {
6408                         err = cmd->cmd_complete(cmd,
6409                                                 MGMT_STATUS_INVALID_PARAMS);
6410                         mgmt_pending_remove(cmd);
6411                         goto unlock;
6412                 }
6413
6414                 list_for_each_entry_safe(b, btmp, &hdev->whitelist, list) {
6415                         device_removed(sk, hdev, &b->bdaddr, b->bdaddr_type);
6416                         list_del(&b->list);
6417                         kfree(b);
6418                 }
6419
6420                 __hci_update_page_scan(&req);
6421
6422                 list_for_each_entry_safe(p, tmp, &hdev->le_conn_params, list) {
6423                         if (p->auto_connect == HCI_AUTO_CONN_DISABLED)
6424                                 continue;
6425                         device_removed(sk, hdev, &p->addr, p->addr_type);
6426                         if (p->explicit_connect) {
6427                                 p->auto_connect = HCI_AUTO_CONN_EXPLICIT;
6428                                 continue;
6429                         }
6430                         list_del(&p->action);
6431                         list_del(&p->list);
6432                         kfree(p);
6433                 }
6434
6435                 BT_DBG("All LE connection parameters were removed");
6436
6437                 __hci_update_background_scan(&req);
6438         }
6439
6440 complete:
6441         err = hci_req_run(&req, remove_device_complete);
6442         if (err < 0) {
6443                 /* ENODATA means no HCI commands were needed (e.g. if
6444                  * the adapter is powered off).
6445                  */
6446                 if (err == -ENODATA)
6447                         err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS);
6448                 mgmt_pending_remove(cmd);
6449         }
6450
6451 unlock:
6452         hci_dev_unlock(hdev);
6453         return err;
6454 }
6455
6456 static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data,
6457                            u16 len)
6458 {
6459         struct mgmt_cp_load_conn_param *cp = data;
6460         const u16 max_param_count = ((U16_MAX - sizeof(*cp)) /
6461                                      sizeof(struct mgmt_conn_param));
6462         u16 param_count, expected_len;
6463         int i;
6464
6465         if (!lmp_le_capable(hdev))
6466                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6467                                        MGMT_STATUS_NOT_SUPPORTED);
6468
6469         param_count = __le16_to_cpu(cp->param_count);
6470         if (param_count > max_param_count) {
6471                 BT_ERR("load_conn_param: too big param_count value %u",
6472                        param_count);
6473                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6474                                        MGMT_STATUS_INVALID_PARAMS);
6475         }
6476
6477         expected_len = sizeof(*cp) + param_count *
6478                                         sizeof(struct mgmt_conn_param);
6479         if (expected_len != len) {
6480                 BT_ERR("load_conn_param: expected %u bytes, got %u bytes",
6481                        expected_len, len);
6482                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
6483                                        MGMT_STATUS_INVALID_PARAMS);
6484         }
6485
6486         BT_DBG("%s param_count %u", hdev->name, param_count);
6487
6488         hci_dev_lock(hdev);
6489
6490         hci_conn_params_clear_disabled(hdev);
6491
6492         for (i = 0; i < param_count; i++) {
6493                 struct mgmt_conn_param *param = &cp->params[i];
6494                 struct hci_conn_params *hci_param;
6495                 u16 min, max, latency, timeout;
6496                 u8 addr_type;
6497
6498                 BT_DBG("Adding %pMR (type %u)", &param->addr.bdaddr,
6499                        param->addr.type);
6500
6501                 if (param->addr.type == BDADDR_LE_PUBLIC) {
6502                         addr_type = ADDR_LE_DEV_PUBLIC;
6503                 } else if (param->addr.type == BDADDR_LE_RANDOM) {
6504                         addr_type = ADDR_LE_DEV_RANDOM;
6505                 } else {
6506                         BT_ERR("Ignoring invalid connection parameters");
6507                         continue;
6508                 }
6509
6510                 min = le16_to_cpu(param->min_interval);
6511                 max = le16_to_cpu(param->max_interval);
6512                 latency = le16_to_cpu(param->latency);
6513                 timeout = le16_to_cpu(param->timeout);
6514
6515                 BT_DBG("min 0x%04x max 0x%04x latency 0x%04x timeout 0x%04x",
6516                        min, max, latency, timeout);
6517
6518                 if (hci_check_conn_params(min, max, latency, timeout) < 0) {
6519                         BT_ERR("Ignoring invalid connection parameters");
6520                         continue;
6521                 }
6522
6523                 hci_param = hci_conn_params_add(hdev, &param->addr.bdaddr,
6524                                                 addr_type);
6525                 if (!hci_param) {
6526                         BT_ERR("Failed to add connection parameters");
6527                         continue;
6528                 }
6529
6530                 hci_param->conn_min_interval = min;
6531                 hci_param->conn_max_interval = max;
6532                 hci_param->conn_latency = latency;
6533                 hci_param->supervision_timeout = timeout;
6534         }
6535
6536         hci_dev_unlock(hdev);
6537
6538         return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 0,
6539                                  NULL, 0);
6540 }
6541
6542 static int set_external_config(struct sock *sk, struct hci_dev *hdev,
6543                                void *data, u16 len)
6544 {
6545         struct mgmt_cp_set_external_config *cp = data;
6546         bool changed;
6547         int err;
6548
6549         BT_DBG("%s", hdev->name);
6550
6551         if (hdev_is_powered(hdev))
6552                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6553                                        MGMT_STATUS_REJECTED);
6554
6555         if (cp->config != 0x00 && cp->config != 0x01)
6556                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6557                                          MGMT_STATUS_INVALID_PARAMS);
6558
6559         if (!test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))
6560                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,
6561                                        MGMT_STATUS_NOT_SUPPORTED);
6562
6563         hci_dev_lock(hdev);
6564
6565         if (cp->config)
6566                 changed = !hci_dev_test_and_set_flag(hdev, HCI_EXT_CONFIGURED);
6567         else
6568                 changed = hci_dev_test_and_clear_flag(hdev, HCI_EXT_CONFIGURED);
6569
6570         err = send_options_rsp(sk, MGMT_OP_SET_EXTERNAL_CONFIG, hdev);
6571         if (err < 0)
6572                 goto unlock;
6573
6574         if (!changed)
6575                 goto unlock;
6576
6577         err = new_options(hdev, sk);
6578
6579         if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) == is_configured(hdev)) {
6580                 mgmt_index_removed(hdev);
6581
6582                 if (hci_dev_test_and_change_flag(hdev, HCI_UNCONFIGURED)) {
6583                         hci_dev_set_flag(hdev, HCI_CONFIG);
6584                         hci_dev_set_flag(hdev, HCI_AUTO_OFF);
6585
6586                         queue_work(hdev->req_workqueue, &hdev->power_on);
6587                 } else {
6588                         set_bit(HCI_RAW, &hdev->flags);
6589                         mgmt_index_added(hdev);
6590                 }
6591         }
6592
6593 unlock:
6594         hci_dev_unlock(hdev);
6595         return err;
6596 }
6597
6598 static int set_public_address(struct sock *sk, struct hci_dev *hdev,
6599                               void *data, u16 len)
6600 {
6601         struct mgmt_cp_set_public_address *cp = data;
6602         bool changed;
6603         int err;
6604
6605         BT_DBG("%s", hdev->name);
6606
6607         if (hdev_is_powered(hdev))
6608                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6609                                        MGMT_STATUS_REJECTED);
6610
6611         if (!bacmp(&cp->bdaddr, BDADDR_ANY))
6612                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6613                                        MGMT_STATUS_INVALID_PARAMS);
6614
6615         if (!hdev->set_bdaddr)
6616                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS,
6617                                        MGMT_STATUS_NOT_SUPPORTED);
6618
6619         hci_dev_lock(hdev);
6620
6621         changed = !!bacmp(&hdev->public_addr, &cp->bdaddr);
6622         bacpy(&hdev->public_addr, &cp->bdaddr);
6623
6624         err = send_options_rsp(sk, MGMT_OP_SET_PUBLIC_ADDRESS, hdev);
6625         if (err < 0)
6626                 goto unlock;
6627
6628         if (!changed)
6629                 goto unlock;
6630
6631         if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
6632                 err = new_options(hdev, sk);
6633
6634         if (is_configured(hdev)) {
6635                 mgmt_index_removed(hdev);
6636
6637                 hci_dev_clear_flag(hdev, HCI_UNCONFIGURED);
6638
6639                 hci_dev_set_flag(hdev, HCI_CONFIG);
6640                 hci_dev_set_flag(hdev, HCI_AUTO_OFF);
6641
6642                 queue_work(hdev->req_workqueue, &hdev->power_on);
6643         }
6644
6645 unlock:
6646         hci_dev_unlock(hdev);
6647         return err;
6648 }
6649
6650 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
6651                                   u8 data_len)
6652 {
6653         eir[eir_len++] = sizeof(type) + data_len;
6654         eir[eir_len++] = type;
6655         memcpy(&eir[eir_len], data, data_len);
6656         eir_len += data_len;
6657
6658         return eir_len;
6659 }
6660
6661 static void read_local_oob_ext_data_complete(struct hci_dev *hdev, u8 status,
6662                                              u16 opcode, struct sk_buff *skb)
6663 {
6664         const struct mgmt_cp_read_local_oob_ext_data *mgmt_cp;
6665         struct mgmt_rp_read_local_oob_ext_data *mgmt_rp;
6666         u8 *h192, *r192, *h256, *r256;
6667         struct mgmt_pending_cmd *cmd;
6668         u16 eir_len;
6669         int err;
6670
6671         BT_DBG("%s status %u", hdev->name, status);
6672
6673         cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev);
6674         if (!cmd)
6675                 return;
6676
6677         mgmt_cp = cmd->param;
6678
6679         if (status) {
6680                 status = mgmt_status(status);
6681                 eir_len = 0;
6682
6683                 h192 = NULL;
6684                 r192 = NULL;
6685                 h256 = NULL;
6686                 r256 = NULL;
6687         } else if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) {
6688                 struct hci_rp_read_local_oob_data *rp;
6689
6690                 if (skb->len != sizeof(*rp)) {
6691                         status = MGMT_STATUS_FAILED;
6692                         eir_len = 0;
6693                 } else {
6694                         status = MGMT_STATUS_SUCCESS;
6695                         rp = (void *)skb->data;
6696
6697                         eir_len = 5 + 18 + 18;
6698                         h192 = rp->hash;
6699                         r192 = rp->rand;
6700                         h256 = NULL;
6701                         r256 = NULL;
6702                 }
6703         } else {
6704                 struct hci_rp_read_local_oob_ext_data *rp;
6705
6706                 if (skb->len != sizeof(*rp)) {
6707                         status = MGMT_STATUS_FAILED;
6708                         eir_len = 0;
6709                 } else {
6710                         status = MGMT_STATUS_SUCCESS;
6711                         rp = (void *)skb->data;
6712
6713                         if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
6714                                 eir_len = 5 + 18 + 18;
6715                                 h192 = NULL;
6716                                 r192 = NULL;
6717                         } else {
6718                                 eir_len = 5 + 18 + 18 + 18 + 18;
6719                                 h192 = rp->hash192;
6720                                 r192 = rp->rand192;
6721                         }
6722
6723                         h256 = rp->hash256;
6724                         r256 = rp->rand256;
6725                 }
6726         }
6727
6728         mgmt_rp = kmalloc(sizeof(*mgmt_rp) + eir_len, GFP_KERNEL);
6729         if (!mgmt_rp)
6730                 goto done;
6731
6732         if (status)
6733                 goto send_rsp;
6734
6735         eir_len = eir_append_data(mgmt_rp->eir, 0, EIR_CLASS_OF_DEV,
6736                                   hdev->dev_class, 3);
6737
6738         if (h192 && r192) {
6739                 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6740                                           EIR_SSP_HASH_C192, h192, 16);
6741                 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6742                                           EIR_SSP_RAND_R192, r192, 16);
6743         }
6744
6745         if (h256 && r256) {
6746                 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6747                                           EIR_SSP_HASH_C256, h256, 16);
6748                 eir_len = eir_append_data(mgmt_rp->eir, eir_len,
6749                                           EIR_SSP_RAND_R256, r256, 16);
6750         }
6751
6752 send_rsp:
6753         mgmt_rp->type = mgmt_cp->type;
6754         mgmt_rp->eir_len = cpu_to_le16(eir_len);
6755
6756         err = mgmt_cmd_complete(cmd->sk, hdev->id,
6757                                 MGMT_OP_READ_LOCAL_OOB_EXT_DATA, status,
6758                                 mgmt_rp, sizeof(*mgmt_rp) + eir_len);
6759         if (err < 0 || status)
6760                 goto done;
6761
6762         hci_sock_set_flag(cmd->sk, HCI_MGMT_OOB_DATA_EVENTS);
6763
6764         err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev,
6765                                  mgmt_rp, sizeof(*mgmt_rp) + eir_len,
6766                                  HCI_MGMT_OOB_DATA_EVENTS, cmd->sk);
6767 done:
6768         kfree(mgmt_rp);
6769         mgmt_pending_remove(cmd);
6770 }
6771
6772 static int read_local_ssp_oob_req(struct hci_dev *hdev, struct sock *sk,
6773                                   struct mgmt_cp_read_local_oob_ext_data *cp)
6774 {
6775         struct mgmt_pending_cmd *cmd;
6776         struct hci_request req;
6777         int err;
6778
6779         cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev,
6780                                cp, sizeof(*cp));
6781         if (!cmd)
6782                 return -ENOMEM;
6783
6784         hci_req_init(&req, hdev);
6785
6786         if (bredr_sc_enabled(hdev))
6787                 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL);
6788         else
6789                 hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL);
6790
6791         err = hci_req_run_skb(&req, read_local_oob_ext_data_complete);
6792         if (err < 0) {
6793                 mgmt_pending_remove(cmd);
6794                 return err;
6795         }
6796
6797         return 0;
6798 }
6799
6800 static int read_local_oob_ext_data(struct sock *sk, struct hci_dev *hdev,
6801                                    void *data, u16 data_len)
6802 {
6803         struct mgmt_cp_read_local_oob_ext_data *cp = data;
6804         struct mgmt_rp_read_local_oob_ext_data *rp;
6805         size_t rp_len;
6806         u16 eir_len;
6807         u8 status, flags, role, addr[7], hash[16], rand[16];
6808         int err;
6809
6810         BT_DBG("%s", hdev->name);
6811
6812         if (hdev_is_powered(hdev)) {
6813                 switch (cp->type) {
6814                 case BIT(BDADDR_BREDR):
6815                         status = mgmt_bredr_support(hdev);
6816                         if (status)
6817                                 eir_len = 0;
6818                         else
6819                                 eir_len = 5;
6820                         break;
6821                 case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)):
6822                         status = mgmt_le_support(hdev);
6823                         if (status)
6824                                 eir_len = 0;
6825                         else
6826                                 eir_len = 9 + 3 + 18 + 18 + 3;
6827                         break;
6828                 default:
6829                         status = MGMT_STATUS_INVALID_PARAMS;
6830                         eir_len = 0;
6831                         break;
6832                 }
6833         } else {
6834                 status = MGMT_STATUS_NOT_POWERED;
6835                 eir_len = 0;
6836         }
6837
6838         rp_len = sizeof(*rp) + eir_len;
6839         rp = kmalloc(rp_len, GFP_ATOMIC);
6840         if (!rp)
6841                 return -ENOMEM;
6842
6843         if (status)
6844                 goto complete;
6845
6846         hci_dev_lock(hdev);
6847
6848         eir_len = 0;
6849         switch (cp->type) {
6850         case BIT(BDADDR_BREDR):
6851                 if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
6852                         err = read_local_ssp_oob_req(hdev, sk, cp);
6853                         hci_dev_unlock(hdev);
6854                         if (!err)
6855                                 goto done;
6856
6857                         status = MGMT_STATUS_FAILED;
6858                         goto complete;
6859                 } else {
6860                         eir_len = eir_append_data(rp->eir, eir_len,
6861                                                   EIR_CLASS_OF_DEV,
6862                                                   hdev->dev_class, 3);
6863                 }
6864                 break;
6865         case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)):
6866                 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
6867                     smp_generate_oob(hdev, hash, rand) < 0) {
6868                         hci_dev_unlock(hdev);
6869                         status = MGMT_STATUS_FAILED;
6870                         goto complete;
6871                 }
6872
6873                 /* This should return the active RPA, but since the RPA
6874                  * is only programmed on demand, it is really hard to fill
6875                  * this in at the moment. For now disallow retrieving
6876                  * local out-of-band data when privacy is in use.
6877                  *
6878                  * Returning the identity address will not help here since
6879                  * pairing happens before the identity resolving key is
6880                  * known and thus the connection establishment happens
6881                  * based on the RPA and not the identity address.
6882                  */
6883                 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
6884                         hci_dev_unlock(hdev);
6885                         status = MGMT_STATUS_REJECTED;
6886                         goto complete;
6887                 }
6888
6889                 if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
6890                    !bacmp(&hdev->bdaddr, BDADDR_ANY) ||
6891                    (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) &&
6892                     bacmp(&hdev->static_addr, BDADDR_ANY))) {
6893                         memcpy(addr, &hdev->static_addr, 6);
6894                         addr[6] = 0x01;
6895                 } else {
6896                         memcpy(addr, &hdev->bdaddr, 6);
6897                         addr[6] = 0x00;
6898                 }
6899
6900                 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_BDADDR,
6901                                           addr, sizeof(addr));
6902
6903                 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
6904                         role = 0x02;
6905                 else
6906                         role = 0x01;
6907
6908                 eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_ROLE,
6909                                           &role, sizeof(role));
6910
6911                 if (hci_dev_test_flag(hdev, HCI_SC_ENABLED)) {
6912                         eir_len = eir_append_data(rp->eir, eir_len,
6913                                                   EIR_LE_SC_CONFIRM,
6914                                                   hash, sizeof(hash));
6915
6916                         eir_len = eir_append_data(rp->eir, eir_len,
6917                                                   EIR_LE_SC_RANDOM,
6918                                                   rand, sizeof(rand));
6919                 }
6920
6921                 flags = get_adv_discov_flags(hdev);
6922
6923                 if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
6924                         flags |= LE_AD_NO_BREDR;
6925
6926                 eir_len = eir_append_data(rp->eir, eir_len, EIR_FLAGS,
6927                                           &flags, sizeof(flags));
6928                 break;
6929         }
6930
6931         hci_dev_unlock(hdev);
6932
6933         hci_sock_set_flag(sk, HCI_MGMT_OOB_DATA_EVENTS);
6934
6935         status = MGMT_STATUS_SUCCESS;
6936
6937 complete:
6938         rp->type = cp->type;
6939         rp->eir_len = cpu_to_le16(eir_len);
6940
6941         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_EXT_DATA,
6942                                 status, rp, sizeof(*rp) + eir_len);
6943         if (err < 0 || status)
6944                 goto done;
6945
6946         err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev,
6947                                  rp, sizeof(*rp) + eir_len,
6948                                  HCI_MGMT_OOB_DATA_EVENTS, sk);
6949
6950 done:
6951         kfree(rp);
6952
6953         return err;
6954 }
6955
6956 static u32 get_supported_adv_flags(struct hci_dev *hdev)
6957 {
6958         u32 flags = 0;
6959
6960         flags |= MGMT_ADV_FLAG_CONNECTABLE;
6961         flags |= MGMT_ADV_FLAG_DISCOV;
6962         flags |= MGMT_ADV_FLAG_LIMITED_DISCOV;
6963         flags |= MGMT_ADV_FLAG_MANAGED_FLAGS;
6964
6965         if (hdev->adv_tx_power != HCI_TX_POWER_INVALID)
6966                 flags |= MGMT_ADV_FLAG_TX_POWER;
6967
6968         return flags;
6969 }
6970
6971 static int read_adv_features(struct sock *sk, struct hci_dev *hdev,
6972                              void *data, u16 data_len)
6973 {
6974         struct mgmt_rp_read_adv_features *rp;
6975         size_t rp_len;
6976         int err, i;
6977         bool instance;
6978         struct adv_info *adv_instance;
6979         u32 supported_flags;
6980
6981         BT_DBG("%s", hdev->name);
6982
6983         if (!lmp_le_capable(hdev))
6984                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES,
6985                                        MGMT_STATUS_REJECTED);
6986
6987         hci_dev_lock(hdev);
6988
6989         rp_len = sizeof(*rp);
6990
6991         instance = hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE);
6992         if (instance)
6993                 rp_len += hdev->adv_instance_cnt;
6994
6995         rp = kmalloc(rp_len, GFP_ATOMIC);
6996         if (!rp) {
6997                 hci_dev_unlock(hdev);
6998                 return -ENOMEM;
6999         }
7000
7001         supported_flags = get_supported_adv_flags(hdev);
7002
7003         rp->supported_flags = cpu_to_le32(supported_flags);
7004         rp->max_adv_data_len = HCI_MAX_AD_LENGTH;
7005         rp->max_scan_rsp_len = HCI_MAX_AD_LENGTH;
7006         rp->max_instances = HCI_MAX_ADV_INSTANCES;
7007
7008         if (instance) {
7009                 i = 0;
7010                 list_for_each_entry(adv_instance, &hdev->adv_instances, list) {
7011                         if (i >= hdev->adv_instance_cnt)
7012                                 break;
7013
7014                         rp->instance[i] = adv_instance->instance;
7015                         i++;
7016                 }
7017                 rp->num_instances = hdev->adv_instance_cnt;
7018         } else {
7019                 rp->num_instances = 0;
7020         }
7021
7022         hci_dev_unlock(hdev);
7023
7024         err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES,
7025                                 MGMT_STATUS_SUCCESS, rp, rp_len);
7026
7027         kfree(rp);
7028
7029         return err;
7030 }
7031
7032 static bool tlv_data_is_valid(struct hci_dev *hdev, u32 adv_flags, u8 *data,
7033                               u8 len, bool is_adv_data)
7034 {
7035         u8 max_len = HCI_MAX_AD_LENGTH;
7036         int i, cur_len;
7037         bool flags_managed = false;
7038         bool tx_power_managed = false;
7039         u32 flags_params = MGMT_ADV_FLAG_DISCOV | MGMT_ADV_FLAG_LIMITED_DISCOV |
7040                            MGMT_ADV_FLAG_MANAGED_FLAGS;
7041
7042         if (is_adv_data && (adv_flags & flags_params)) {
7043                 flags_managed = true;
7044                 max_len -= 3;
7045         }
7046
7047         if (is_adv_data && (adv_flags & MGMT_ADV_FLAG_TX_POWER)) {
7048                 tx_power_managed = true;
7049                 max_len -= 3;
7050         }
7051
7052         if (len > max_len)
7053                 return false;
7054
7055         /* Make sure that the data is correctly formatted. */
7056         for (i = 0, cur_len = 0; i < len; i += (cur_len + 1)) {
7057                 cur_len = data[i];
7058
7059                 if (flags_managed && data[i + 1] == EIR_FLAGS)
7060                         return false;
7061
7062                 if (tx_power_managed && data[i + 1] == EIR_TX_POWER)
7063                         return false;
7064
7065                 /* If the current field length would exceed the total data
7066                  * length, then it's invalid.
7067                  */
7068                 if (i + cur_len >= len)
7069                         return false;
7070         }
7071
7072         return true;
7073 }
7074
7075 static void add_advertising_complete(struct hci_dev *hdev, u8 status,
7076                                      u16 opcode)
7077 {
7078         struct mgmt_pending_cmd *cmd;
7079         struct mgmt_cp_add_advertising *cp;
7080         struct mgmt_rp_add_advertising rp;
7081         struct adv_info *adv_instance, *n;
7082         u8 instance;
7083
7084         BT_DBG("status %d", status);
7085
7086         hci_dev_lock(hdev);
7087
7088         cmd = pending_find(MGMT_OP_ADD_ADVERTISING, hdev);
7089
7090         if (status)
7091                 hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE);
7092
7093         list_for_each_entry_safe(adv_instance, n, &hdev->adv_instances, list) {
7094                 if (!adv_instance->pending)
7095                         continue;
7096
7097                 if (!status) {
7098                         adv_instance->pending = false;
7099                         continue;
7100                 }
7101
7102                 instance = adv_instance->instance;
7103
7104                 if (hdev->cur_adv_instance == instance)
7105                         cancel_adv_timeout(hdev);
7106
7107                 hci_remove_adv_instance(hdev, instance);
7108                 advertising_removed(cmd ? cmd->sk : NULL, hdev, instance);
7109         }
7110
7111         if (!cmd)
7112                 goto unlock;
7113
7114         cp = cmd->param;
7115         rp.instance = cp->instance;
7116
7117         if (status)
7118                 mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode,
7119                                 mgmt_status(status));
7120         else
7121                 mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode,
7122                                   mgmt_status(status), &rp, sizeof(rp));
7123
7124         mgmt_pending_remove(cmd);
7125
7126 unlock:
7127         hci_dev_unlock(hdev);
7128 }
7129
7130 void mgmt_adv_timeout_expired(struct hci_dev *hdev)
7131 {
7132         u8 instance;
7133         struct hci_request req;
7134
7135         hdev->adv_instance_timeout = 0;
7136
7137         instance = get_current_adv_instance(hdev);
7138         if (instance == 0x00)
7139                 return;
7140
7141         hci_dev_lock(hdev);
7142         hci_req_init(&req, hdev);
7143
7144         clear_adv_instance(hdev, &req, instance, false);
7145
7146         if (list_empty(&hdev->adv_instances))
7147                 disable_advertising(&req);
7148
7149         if (!skb_queue_empty(&req.cmd_q))
7150                 hci_req_run(&req, NULL);
7151
7152         hci_dev_unlock(hdev);
7153 }
7154
7155 static int add_advertising(struct sock *sk, struct hci_dev *hdev,
7156                            void *data, u16 data_len)
7157 {
7158         struct mgmt_cp_add_advertising *cp = data;
7159         struct mgmt_rp_add_advertising rp;
7160         u32 flags;
7161         u32 supported_flags;
7162         u8 status;
7163         u16 timeout, duration;
7164         unsigned int prev_instance_cnt = hdev->adv_instance_cnt;
7165         u8 schedule_instance = 0;
7166         struct adv_info *next_instance;
7167         int err;
7168         struct mgmt_pending_cmd *cmd;
7169         struct hci_request req;
7170
7171         BT_DBG("%s", hdev->name);
7172
7173         status = mgmt_le_support(hdev);
7174         if (status)
7175                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7176                                        status);
7177
7178         flags = __le32_to_cpu(cp->flags);
7179         timeout = __le16_to_cpu(cp->timeout);
7180         duration = __le16_to_cpu(cp->duration);
7181
7182         /* The current implementation only supports a subset of the specified
7183          * flags.
7184          */
7185         supported_flags = get_supported_adv_flags(hdev);
7186         if (flags & ~supported_flags)
7187                 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7188                                        MGMT_STATUS_INVALID_PARAMS);
7189
7190         hci_dev_lock(hdev);
7191
7192         if (timeout && !hdev_is_powered(hdev)) {
7193                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7194                                       MGMT_STATUS_REJECTED);
7195                 goto unlock;
7196         }
7197
7198         if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) ||
7199             pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) ||
7200             pending_find(MGMT_OP_SET_LE, hdev)) {
7201                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7202                                       MGMT_STATUS_BUSY);
7203                 goto unlock;
7204         }
7205
7206         if (!tlv_data_is_valid(hdev, flags, cp->data, cp->adv_data_len, true) ||
7207             !tlv_data_is_valid(hdev, flags, cp->data + cp->adv_data_len,
7208                                cp->scan_rsp_len, false)) {
7209                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7210                                       MGMT_STATUS_INVALID_PARAMS);
7211                 goto unlock;
7212         }
7213
7214         err = hci_add_adv_instance(hdev, cp->instance, flags,
7215                                    cp->adv_data_len, cp->data,
7216                                    cp->scan_rsp_len,
7217                                    cp->data + cp->adv_data_len,
7218                                    timeout, duration);
7219         if (err < 0) {
7220                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7221                                       MGMT_STATUS_FAILED);
7222                 goto unlock;
7223         }
7224
7225         /* Only trigger an advertising added event if a new instance was
7226          * actually added.
7227          */
7228         if (hdev->adv_instance_cnt > prev_instance_cnt)
7229                 advertising_added(sk, hdev, cp->instance);
7230
7231         hci_dev_set_flag(hdev, HCI_ADVERTISING_INSTANCE);
7232
7233         if (hdev->cur_adv_instance == cp->instance) {
7234                 /* If the currently advertised instance is being changed then
7235                  * cancel the current advertising and schedule the next
7236                  * instance. If there is only one instance then the overridden
7237                  * advertising data will be visible right away.
7238                  */
7239                 cancel_adv_timeout(hdev);
7240
7241                 next_instance = hci_get_next_instance(hdev, cp->instance);
7242                 if (next_instance)
7243                         schedule_instance = next_instance->instance;
7244         } else if (!hdev->adv_instance_timeout) {
7245                 /* Immediately advertise the new instance if no other
7246                  * instance is currently being advertised.
7247                  */
7248                 schedule_instance = cp->instance;
7249         }
7250
7251         /* If the HCI_ADVERTISING flag is set or the device isn't powered or
7252          * there is no instance to be advertised then we have no HCI
7253          * communication to make. Simply return.
7254          */
7255         if (!hdev_is_powered(hdev) ||
7256             hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
7257             !schedule_instance) {
7258                 rp.instance = cp->instance;
7259                 err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
7260                                         MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
7261                 goto unlock;
7262         }
7263
7264         /* We're good to go, update advertising data, parameters, and start
7265          * advertising.
7266          */
7267         cmd = mgmt_pending_add(sk, MGMT_OP_ADD_ADVERTISING, hdev, data,
7268                                data_len);
7269         if (!cmd) {
7270                 err = -ENOMEM;
7271                 goto unlock;
7272         }
7273
7274         hci_req_init(&req, hdev);
7275
7276         err = schedule_adv_instance(&req, schedule_instance, true);
7277
7278         if (!err)
7279                 err = hci_req_run(&req, add_advertising_complete);
7280
7281         if (err < 0)
7282                 mgmt_pending_remove(cmd);
7283
7284 unlock:
7285         hci_dev_unlock(hdev);
7286
7287         return err;
7288 }
7289
7290 static void remove_advertising_complete(struct hci_dev *hdev, u8 status,
7291                                         u16 opcode)
7292 {
7293         struct mgmt_pending_cmd *cmd;
7294         struct mgmt_cp_remove_advertising *cp;
7295         struct mgmt_rp_remove_advertising rp;
7296
7297         BT_DBG("status %d", status);
7298
7299         hci_dev_lock(hdev);
7300
7301         /* A failure status here only means that we failed to disable
7302          * advertising. Otherwise, the advertising instance has been removed,
7303          * so report success.
7304          */
7305         cmd = pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev);
7306         if (!cmd)
7307                 goto unlock;
7308
7309         cp = cmd->param;
7310         rp.instance = cp->instance;
7311
7312         mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, MGMT_STATUS_SUCCESS,
7313                           &rp, sizeof(rp));
7314         mgmt_pending_remove(cmd);
7315
7316 unlock:
7317         hci_dev_unlock(hdev);
7318 }
7319
7320 static int remove_advertising(struct sock *sk, struct hci_dev *hdev,
7321                               void *data, u16 data_len)
7322 {
7323         struct mgmt_cp_remove_advertising *cp = data;
7324         struct mgmt_rp_remove_advertising rp;
7325         struct mgmt_pending_cmd *cmd;
7326         struct hci_request req;
7327         int err;
7328
7329         BT_DBG("%s", hdev->name);
7330
7331         hci_dev_lock(hdev);
7332
7333         if (cp->instance && !hci_find_adv_instance(hdev, cp->instance)) {
7334                 err = mgmt_cmd_status(sk, hdev->id,
7335                                       MGMT_OP_REMOVE_ADVERTISING,
7336                                       MGMT_STATUS_INVALID_PARAMS);
7337                 goto unlock;
7338         }
7339
7340         if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) ||
7341             pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) ||
7342             pending_find(MGMT_OP_SET_LE, hdev)) {
7343                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING,
7344                                       MGMT_STATUS_BUSY);
7345                 goto unlock;
7346         }
7347
7348         if (!hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) {
7349                 err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING,
7350                                       MGMT_STATUS_INVALID_PARAMS);
7351                 goto unlock;
7352         }
7353
7354         hci_req_init(&req, hdev);
7355
7356         clear_adv_instance(hdev, &req, cp->instance, true);
7357
7358         if (list_empty(&hdev->adv_instances))
7359                 disable_advertising(&req);
7360
7361         /* If no HCI commands have been collected so far or the HCI_ADVERTISING
7362          * flag is set or the device isn't powered then we have no HCI
7363          * communication to make. Simply return.
7364          */
7365         if (skb_queue_empty(&req.cmd_q) ||
7366             !hdev_is_powered(hdev) ||
7367             hci_dev_test_flag(hdev, HCI_ADVERTISING)) {
7368                 rp.instance = cp->instance;
7369                 err = mgmt_cmd_complete(sk, hdev->id,
7370                                         MGMT_OP_REMOVE_ADVERTISING,
7371                                         MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
7372                 goto unlock;
7373         }
7374
7375         cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_ADVERTISING, hdev, data,
7376                                data_len);
7377         if (!cmd) {
7378                 err = -ENOMEM;
7379                 goto unlock;
7380         }
7381
7382         err = hci_req_run(&req, remove_advertising_complete);
7383         if (err < 0)
7384                 mgmt_pending_remove(cmd);
7385
7386 unlock:
7387         hci_dev_unlock(hdev);
7388
7389         return err;
7390 }
7391
7392 static const struct hci_mgmt_handler mgmt_handlers[] = {
7393         { NULL }, /* 0x0000 (no command) */
7394         { read_version,            MGMT_READ_VERSION_SIZE,
7395                                                 HCI_MGMT_NO_HDEV |
7396                                                 HCI_MGMT_UNTRUSTED },
7397         { read_commands,           MGMT_READ_COMMANDS_SIZE,
7398                                                 HCI_MGMT_NO_HDEV |
7399                                                 HCI_MGMT_UNTRUSTED },
7400         { read_index_list,         MGMT_READ_INDEX_LIST_SIZE,
7401                                                 HCI_MGMT_NO_HDEV |
7402                                                 HCI_MGMT_UNTRUSTED },
7403         { read_controller_info,    MGMT_READ_INFO_SIZE,
7404                                                 HCI_MGMT_UNTRUSTED },
7405         { set_powered,             MGMT_SETTING_SIZE },
7406         { set_discoverable,        MGMT_SET_DISCOVERABLE_SIZE },
7407         { set_connectable,         MGMT_SETTING_SIZE },
7408         { set_fast_connectable,    MGMT_SETTING_SIZE },
7409         { set_bondable,            MGMT_SETTING_SIZE },
7410         { set_link_security,       MGMT_SETTING_SIZE },
7411         { set_ssp,                 MGMT_SETTING_SIZE },
7412         { set_hs,                  MGMT_SETTING_SIZE },
7413         { set_le,                  MGMT_SETTING_SIZE },
7414         { set_dev_class,           MGMT_SET_DEV_CLASS_SIZE },
7415         { set_local_name,          MGMT_SET_LOCAL_NAME_SIZE },
7416         { add_uuid,                MGMT_ADD_UUID_SIZE },
7417         { remove_uuid,             MGMT_REMOVE_UUID_SIZE },
7418         { load_link_keys,          MGMT_LOAD_LINK_KEYS_SIZE,
7419                                                 HCI_MGMT_VAR_LEN },
7420         { load_long_term_keys,     MGMT_LOAD_LONG_TERM_KEYS_SIZE,
7421                                                 HCI_MGMT_VAR_LEN },
7422         { disconnect,              MGMT_DISCONNECT_SIZE },
7423         { get_connections,         MGMT_GET_CONNECTIONS_SIZE },
7424         { pin_code_reply,          MGMT_PIN_CODE_REPLY_SIZE },
7425         { pin_code_neg_reply,      MGMT_PIN_CODE_NEG_REPLY_SIZE },
7426         { set_io_capability,       MGMT_SET_IO_CAPABILITY_SIZE },
7427         { pair_device,             MGMT_PAIR_DEVICE_SIZE },
7428         { cancel_pair_device,      MGMT_CANCEL_PAIR_DEVICE_SIZE },
7429         { unpair_device,           MGMT_UNPAIR_DEVICE_SIZE },
7430         { user_confirm_reply,      MGMT_USER_CONFIRM_REPLY_SIZE },
7431         { user_confirm_neg_reply,  MGMT_USER_CONFIRM_NEG_REPLY_SIZE },
7432         { user_passkey_reply,      MGMT_USER_PASSKEY_REPLY_SIZE },
7433         { user_passkey_neg_reply,  MGMT_USER_PASSKEY_NEG_REPLY_SIZE },
7434         { read_local_oob_data,     MGMT_READ_LOCAL_OOB_DATA_SIZE },
7435         { add_remote_oob_data,     MGMT_ADD_REMOTE_OOB_DATA_SIZE,
7436                                                 HCI_MGMT_VAR_LEN },
7437         { remove_remote_oob_data,  MGMT_REMOVE_REMOTE_OOB_DATA_SIZE },
7438         { start_discovery,         MGMT_START_DISCOVERY_SIZE },
7439         { stop_discovery,          MGMT_STOP_DISCOVERY_SIZE },
7440         { confirm_name,            MGMT_CONFIRM_NAME_SIZE },
7441         { block_device,            MGMT_BLOCK_DEVICE_SIZE },
7442         { unblock_device,          MGMT_UNBLOCK_DEVICE_SIZE },
7443         { set_device_id,           MGMT_SET_DEVICE_ID_SIZE },
7444         { set_advertising,         MGMT_SETTING_SIZE },
7445         { set_bredr,               MGMT_SETTING_SIZE },
7446         { set_static_address,      MGMT_SET_STATIC_ADDRESS_SIZE },
7447         { set_scan_params,         MGMT_SET_SCAN_PARAMS_SIZE },
7448         { set_secure_conn,         MGMT_SETTING_SIZE },
7449         { set_debug_keys,          MGMT_SETTING_SIZE },
7450         { set_privacy,             MGMT_SET_PRIVACY_SIZE },
7451         { load_irks,               MGMT_LOAD_IRKS_SIZE,
7452                                                 HCI_MGMT_VAR_LEN },
7453         { get_conn_info,           MGMT_GET_CONN_INFO_SIZE },
7454         { get_clock_info,          MGMT_GET_CLOCK_INFO_SIZE },
7455         { add_device,              MGMT_ADD_DEVICE_SIZE },
7456         { remove_device,           MGMT_REMOVE_DEVICE_SIZE },
7457         { load_conn_param,         MGMT_LOAD_CONN_PARAM_SIZE,
7458                                                 HCI_MGMT_VAR_LEN },
7459         { read_unconf_index_list,  MGMT_READ_UNCONF_INDEX_LIST_SIZE,
7460                                                 HCI_MGMT_NO_HDEV |
7461                                                 HCI_MGMT_UNTRUSTED },
7462         { read_config_info,        MGMT_READ_CONFIG_INFO_SIZE,
7463                                                 HCI_MGMT_UNCONFIGURED |
7464                                                 HCI_MGMT_UNTRUSTED },
7465         { set_external_config,     MGMT_SET_EXTERNAL_CONFIG_SIZE,
7466                                                 HCI_MGMT_UNCONFIGURED },
7467         { set_public_address,      MGMT_SET_PUBLIC_ADDRESS_SIZE,
7468                                                 HCI_MGMT_UNCONFIGURED },
7469         { start_service_discovery, MGMT_START_SERVICE_DISCOVERY_SIZE,
7470                                                 HCI_MGMT_VAR_LEN },
7471         { read_local_oob_ext_data, MGMT_READ_LOCAL_OOB_EXT_DATA_SIZE },
7472         { read_ext_index_list,     MGMT_READ_EXT_INDEX_LIST_SIZE,
7473                                                 HCI_MGMT_NO_HDEV |
7474                                                 HCI_MGMT_UNTRUSTED },
7475         { read_adv_features,       MGMT_READ_ADV_FEATURES_SIZE },
7476         { add_advertising,         MGMT_ADD_ADVERTISING_SIZE,
7477                                                 HCI_MGMT_VAR_LEN },
7478         { remove_advertising,      MGMT_REMOVE_ADVERTISING_SIZE },
7479 };
7480
7481 void mgmt_index_added(struct hci_dev *hdev)
7482 {
7483         struct mgmt_ev_ext_index ev;
7484
7485         if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
7486                 return;
7487
7488         switch (hdev->dev_type) {
7489         case HCI_BREDR:
7490                 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
7491                         mgmt_index_event(MGMT_EV_UNCONF_INDEX_ADDED, hdev,
7492                                          NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS);
7493                         ev.type = 0x01;
7494                 } else {
7495                         mgmt_index_event(MGMT_EV_INDEX_ADDED, hdev, NULL, 0,
7496                                          HCI_MGMT_INDEX_EVENTS);
7497                         ev.type = 0x00;
7498                 }
7499                 break;
7500         case HCI_AMP:
7501                 ev.type = 0x02;
7502                 break;
7503         default:
7504                 return;
7505         }
7506
7507         ev.bus = hdev->bus;
7508
7509         mgmt_index_event(MGMT_EV_EXT_INDEX_ADDED, hdev, &ev, sizeof(ev),
7510                          HCI_MGMT_EXT_INDEX_EVENTS);
7511 }
7512
7513 void mgmt_index_removed(struct hci_dev *hdev)
7514 {
7515         struct mgmt_ev_ext_index ev;
7516         u8 status = MGMT_STATUS_INVALID_INDEX;
7517
7518         if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks))
7519                 return;
7520
7521         switch (hdev->dev_type) {
7522         case HCI_BREDR:
7523                 mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status);
7524
7525                 if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) {
7526                         mgmt_index_event(MGMT_EV_UNCONF_INDEX_REMOVED, hdev,
7527                                          NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS);
7528                         ev.type = 0x01;
7529                 } else {
7530                         mgmt_index_event(MGMT_EV_INDEX_REMOVED, hdev, NULL, 0,
7531                                          HCI_MGMT_INDEX_EVENTS);
7532                         ev.type = 0x00;
7533                 }
7534                 break;
7535         case HCI_AMP:
7536                 ev.type = 0x02;
7537                 break;
7538         default:
7539                 return;
7540         }
7541
7542         ev.bus = hdev->bus;
7543
7544         mgmt_index_event(MGMT_EV_EXT_INDEX_REMOVED, hdev, &ev, sizeof(ev),
7545                          HCI_MGMT_EXT_INDEX_EVENTS);
7546 }
7547
7548 /* This function requires the caller holds hdev->lock */
7549 static void restart_le_actions(struct hci_request *req)
7550 {
7551         struct hci_dev *hdev = req->hdev;
7552         struct hci_conn_params *p;
7553
7554         list_for_each_entry(p, &hdev->le_conn_params, list) {
7555                 /* Needed for AUTO_OFF case where might not "really"
7556                  * have been powered off.
7557                  */
7558                 list_del_init(&p->action);
7559
7560                 switch (p->auto_connect) {
7561                 case HCI_AUTO_CONN_DIRECT:
7562                 case HCI_AUTO_CONN_ALWAYS:
7563                         list_add(&p->action, &hdev->pend_le_conns);
7564                         break;
7565                 case HCI_AUTO_CONN_REPORT:
7566                         list_add(&p->action, &hdev->pend_le_reports);
7567                         break;
7568                 default:
7569                         break;
7570                 }
7571         }
7572
7573         __hci_update_background_scan(req);
7574 }
7575
7576 static void powered_complete(struct hci_dev *hdev, u8 status, u16 opcode)
7577 {
7578         struct cmd_lookup match = { NULL, hdev };
7579
7580         BT_DBG("status 0x%02x", status);
7581
7582         if (!status) {
7583                 /* Register the available SMP channels (BR/EDR and LE) only
7584                  * when successfully powering on the controller. This late
7585                  * registration is required so that LE SMP can clearly
7586                  * decide if the public address or static address is used.
7587                  */
7588                 smp_register(hdev);
7589         }
7590
7591         hci_dev_lock(hdev);
7592
7593         mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
7594
7595         new_settings(hdev, match.sk);
7596
7597         hci_dev_unlock(hdev);
7598
7599         if (match.sk)
7600                 sock_put(match.sk);
7601 }
7602
7603 static int powered_update_hci(struct hci_dev *hdev)
7604 {
7605         struct hci_request req;
7606         struct adv_info *adv_instance;
7607         u8 link_sec;
7608
7609         hci_req_init(&req, hdev);
7610
7611         if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
7612             !lmp_host_ssp_capable(hdev)) {
7613                 u8 mode = 0x01;
7614
7615                 hci_req_add(&req, HCI_OP_WRITE_SSP_MODE, sizeof(mode), &mode);
7616
7617                 if (bredr_sc_enabled(hdev) && !lmp_host_sc_capable(hdev)) {
7618                         u8 support = 0x01;
7619
7620                         hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT,
7621                                     sizeof(support), &support);
7622                 }
7623         }
7624
7625         if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
7626             lmp_bredr_capable(hdev)) {
7627                 struct hci_cp_write_le_host_supported cp;
7628
7629                 cp.le = 0x01;
7630                 cp.simul = 0x00;
7631
7632                 /* Check first if we already have the right
7633                  * host state (host features set)
7634                  */
7635                 if (cp.le != lmp_host_le_capable(hdev) ||
7636                     cp.simul != lmp_host_le_br_capable(hdev))
7637                         hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED,
7638                                     sizeof(cp), &cp);
7639         }
7640
7641         if (lmp_le_capable(hdev)) {
7642                 /* Make sure the controller has a good default for
7643                  * advertising data. This also applies to the case
7644                  * where BR/EDR was toggled during the AUTO_OFF phase.
7645                  */
7646                 if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) &&
7647                     (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||
7648                      !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))) {
7649                         update_adv_data(&req);
7650                         update_scan_rsp_data(&req);
7651                 }
7652
7653                 if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) &&
7654                     hdev->cur_adv_instance == 0x00 &&
7655                     !list_empty(&hdev->adv_instances)) {
7656                         adv_instance = list_first_entry(&hdev->adv_instances,
7657                                                         struct adv_info, list);
7658                         hdev->cur_adv_instance = adv_instance->instance;
7659                 }
7660
7661                 if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
7662                         enable_advertising(&req);
7663                 else if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) &&
7664                          hdev->cur_adv_instance)
7665                         schedule_adv_instance(&req, hdev->cur_adv_instance,
7666                                               true);
7667
7668                 restart_le_actions(&req);
7669         }
7670
7671         link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY);
7672         if (link_sec != test_bit(HCI_AUTH, &hdev->flags))
7673                 hci_req_add(&req, HCI_OP_WRITE_AUTH_ENABLE,
7674                             sizeof(link_sec), &link_sec);
7675
7676         if (lmp_bredr_capable(hdev)) {
7677                 if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE))
7678                         write_fast_connectable(&req, true);
7679                 else
7680                         write_fast_connectable(&req, false);
7681                 __hci_update_page_scan(&req);
7682                 update_class(&req);
7683                 update_name(&req);
7684                 update_eir(&req);
7685         }
7686
7687         return hci_req_run(&req, powered_complete);
7688 }
7689
7690 int mgmt_powered(struct hci_dev *hdev, u8 powered)
7691 {
7692         struct cmd_lookup match = { NULL, hdev };
7693         u8 status, zero_cod[] = { 0, 0, 0 };
7694         int err;
7695
7696         if (!hci_dev_test_flag(hdev, HCI_MGMT))
7697                 return 0;
7698
7699         if (powered) {
7700                 if (powered_update_hci(hdev) == 0)
7701                         return 0;
7702
7703                 mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp,
7704                                      &match);
7705                 goto new_settings;
7706         }
7707
7708         mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
7709
7710         /* If the power off is because of hdev unregistration let
7711          * use the appropriate INVALID_INDEX status. Otherwise use
7712          * NOT_POWERED. We cover both scenarios here since later in
7713          * mgmt_index_removed() any hci_conn callbacks will have already
7714          * been triggered, potentially causing misleading DISCONNECTED
7715          * status responses.
7716          */
7717         if (hci_dev_test_flag(hdev, HCI_UNREGISTER))
7718                 status = MGMT_STATUS_INVALID_INDEX;
7719         else
7720                 status = MGMT_STATUS_NOT_POWERED;
7721
7722         mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status);
7723
7724         if (memcmp(hdev->dev_class, zero_cod, sizeof(zero_cod)) != 0)
7725                 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev,
7726                                    zero_cod, sizeof(zero_cod), NULL);
7727
7728 new_settings:
7729         err = new_settings(hdev, match.sk);
7730
7731         if (match.sk)
7732                 sock_put(match.sk);
7733
7734         return err;
7735 }
7736
7737 void mgmt_set_powered_failed(struct hci_dev *hdev, int err)
7738 {
7739         struct mgmt_pending_cmd *cmd;
7740         u8 status;
7741
7742         cmd = pending_find(MGMT_OP_SET_POWERED, hdev);
7743         if (!cmd)
7744                 return;
7745
7746         if (err == -ERFKILL)
7747                 status = MGMT_STATUS_RFKILLED;
7748         else
7749                 status = MGMT_STATUS_FAILED;
7750
7751         mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_POWERED, status);
7752
7753         mgmt_pending_remove(cmd);
7754 }
7755
7756 void mgmt_discoverable_timeout(struct hci_dev *hdev)
7757 {
7758         struct hci_request req;
7759
7760         hci_dev_lock(hdev);
7761
7762         /* When discoverable timeout triggers, then just make sure
7763          * the limited discoverable flag is cleared. Even in the case
7764          * of a timeout triggered from general discoverable, it is
7765          * safe to unconditionally clear the flag.
7766          */
7767         hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE);
7768         hci_dev_clear_flag(hdev, HCI_DISCOVERABLE);
7769
7770         hci_req_init(&req, hdev);
7771         if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) {
7772                 u8 scan = SCAN_PAGE;
7773                 hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE,
7774                             sizeof(scan), &scan);
7775         }
7776         update_class(&req);
7777
7778         /* Advertising instances don't use the global discoverable setting, so
7779          * only update AD if advertising was enabled using Set Advertising.
7780          */
7781         if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
7782                 update_adv_data(&req);
7783
7784         hci_req_run(&req, NULL);
7785
7786         hdev->discov_timeout = 0;
7787
7788         new_settings(hdev, NULL);
7789
7790         hci_dev_unlock(hdev);
7791 }
7792
7793 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
7794                        bool persistent)
7795 {
7796         struct mgmt_ev_new_link_key ev;
7797
7798         memset(&ev, 0, sizeof(ev));
7799
7800         ev.store_hint = persistent;
7801         bacpy(&ev.key.addr.bdaddr, &key->bdaddr);
7802         ev.key.addr.type = BDADDR_BREDR;
7803         ev.key.type = key->type;
7804         memcpy(ev.key.val, key->val, HCI_LINK_KEY_SIZE);
7805         ev.key.pin_len = key->pin_len;
7806
7807         mgmt_event(MGMT_EV_NEW_LINK_KEY, hdev, &ev, sizeof(ev), NULL);
7808 }
7809
7810 static u8 mgmt_ltk_type(struct smp_ltk *ltk)
7811 {
7812         switch (ltk->type) {
7813         case SMP_LTK:
7814         case SMP_LTK_SLAVE:
7815                 if (ltk->authenticated)
7816                         return MGMT_LTK_AUTHENTICATED;
7817                 return MGMT_LTK_UNAUTHENTICATED;
7818         case SMP_LTK_P256:
7819                 if (ltk->authenticated)
7820                         return MGMT_LTK_P256_AUTH;
7821                 return MGMT_LTK_P256_UNAUTH;
7822         case SMP_LTK_P256_DEBUG:
7823                 return MGMT_LTK_P256_DEBUG;
7824         }
7825
7826         return MGMT_LTK_UNAUTHENTICATED;
7827 }
7828
7829 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent)
7830 {
7831         struct mgmt_ev_new_long_term_key ev;
7832
7833         memset(&ev, 0, sizeof(ev));
7834
7835         /* Devices using resolvable or non-resolvable random addresses
7836          * without providing an identity resolving key don't require
7837          * to store long term keys. Their addresses will change the
7838          * next time around.
7839          *
7840          * Only when a remote device provides an identity address
7841          * make sure the long term key is stored. If the remote
7842          * identity is known, the long term keys are internally
7843          * mapped to the identity address. So allow static random
7844          * and public addresses here.
7845          */
7846         if (key->bdaddr_type == ADDR_LE_DEV_RANDOM &&
7847             (key->bdaddr.b[5] & 0xc0) != 0xc0)
7848                 ev.store_hint = 0x00;
7849         else
7850                 ev.store_hint = persistent;
7851
7852         bacpy(&ev.key.addr.bdaddr, &key->bdaddr);
7853         ev.key.addr.type = link_to_bdaddr(LE_LINK, key->bdaddr_type);
7854         ev.key.type = mgmt_ltk_type(key);
7855         ev.key.enc_size = key->enc_size;
7856         ev.key.ediv = key->ediv;
7857         ev.key.rand = key->rand;
7858
7859         if (key->type == SMP_LTK)
7860                 ev.key.master = 1;
7861
7862         /* Make sure we copy only the significant bytes based on the
7863          * encryption key size, and set the rest of the value to zeroes.
7864          */
7865         memcpy(ev.key.val, key->val, key->enc_size);
7866         memset(ev.key.val + key->enc_size, 0,
7867                sizeof(ev.key.val) - key->enc_size);
7868
7869         mgmt_event(MGMT_EV_NEW_LONG_TERM_KEY, hdev, &ev, sizeof(ev), NULL);
7870 }
7871
7872 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk)
7873 {
7874         struct mgmt_ev_new_irk ev;
7875
7876         memset(&ev, 0, sizeof(ev));
7877
7878         /* For identity resolving keys from devices that are already
7879          * using a public address or static random address, do not
7880          * ask for storing this key. The identity resolving key really
7881          * is only mandatory for devices using resolvable random
7882          * addresses.
7883          *
7884          * Storing all identity resolving keys has the downside that
7885          * they will be also loaded on next boot of they system. More
7886          * identity resolving keys, means more time during scanning is
7887          * needed to actually resolve these addresses.
7888          */
7889         if (bacmp(&irk->rpa, BDADDR_ANY))
7890                 ev.store_hint = 0x01;
7891         else
7892                 ev.store_hint = 0x00;
7893
7894         bacpy(&ev.rpa, &irk->rpa);
7895         bacpy(&ev.irk.addr.bdaddr, &irk->bdaddr);
7896         ev.irk.addr.type = link_to_bdaddr(LE_LINK, irk->addr_type);
7897         memcpy(ev.irk.val, irk->val, sizeof(irk->val));
7898
7899         mgmt_event(MGMT_EV_NEW_IRK, hdev, &ev, sizeof(ev), NULL);
7900 }
7901
7902 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
7903                    bool persistent)
7904 {
7905         struct mgmt_ev_new_csrk ev;
7906
7907         memset(&ev, 0, sizeof(ev));
7908
7909         /* Devices using resolvable or non-resolvable random addresses
7910          * without providing an identity resolving key don't require
7911          * to store signature resolving keys. Their addresses will change
7912          * the next time around.
7913          *
7914          * Only when a remote device provides an identity address
7915          * make sure the signature resolving key is stored. So allow
7916          * static random and public addresses here.
7917          */
7918         if (csrk->bdaddr_type == ADDR_LE_DEV_RANDOM &&
7919             (csrk->bdaddr.b[5] & 0xc0) != 0xc0)
7920                 ev.store_hint = 0x00;
7921         else
7922                 ev.store_hint = persistent;
7923
7924         bacpy(&ev.key.addr.bdaddr, &csrk->bdaddr);
7925         ev.key.addr.type = link_to_bdaddr(LE_LINK, csrk->bdaddr_type);
7926         ev.key.type = csrk->type;
7927         memcpy(ev.key.val, csrk->val, sizeof(csrk->val));
7928
7929         mgmt_event(MGMT_EV_NEW_CSRK, hdev, &ev, sizeof(ev), NULL);
7930 }
7931
7932 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
7933                          u8 bdaddr_type, u8 store_hint, u16 min_interval,
7934                          u16 max_interval, u16 latency, u16 timeout)
7935 {
7936         struct mgmt_ev_new_conn_param ev;
7937
7938         if (!hci_is_identity_address(bdaddr, bdaddr_type))
7939                 return;
7940
7941         memset(&ev, 0, sizeof(ev));
7942         bacpy(&ev.addr.bdaddr, bdaddr);
7943         ev.addr.type = link_to_bdaddr(LE_LINK, bdaddr_type);
7944         ev.store_hint = store_hint;
7945         ev.min_interval = cpu_to_le16(min_interval);
7946         ev.max_interval = cpu_to_le16(max_interval);
7947         ev.latency = cpu_to_le16(latency);
7948         ev.timeout = cpu_to_le16(timeout);
7949
7950         mgmt_event(MGMT_EV_NEW_CONN_PARAM, hdev, &ev, sizeof(ev), NULL);
7951 }
7952
7953 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
7954                            u32 flags, u8 *name, u8 name_len)
7955 {
7956         char buf[512];
7957         struct mgmt_ev_device_connected *ev = (void *) buf;
7958         u16 eir_len = 0;
7959
7960         bacpy(&ev->addr.bdaddr, &conn->dst);
7961         ev->addr.type = link_to_bdaddr(conn->type, conn->dst_type);
7962
7963         ev->flags = __cpu_to_le32(flags);
7964
7965         /* We must ensure that the EIR Data fields are ordered and
7966          * unique. Keep it simple for now and avoid the problem by not
7967          * adding any BR/EDR data to the LE adv.
7968          */
7969         if (conn->le_adv_data_len > 0) {
7970                 memcpy(&ev->eir[eir_len],
7971                        conn->le_adv_data, conn->le_adv_data_len);
7972                 eir_len = conn->le_adv_data_len;
7973         } else {
7974                 if (name_len > 0)
7975                         eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE,
7976                                                   name, name_len);
7977
7978                 if (memcmp(conn->dev_class, "\0\0\0", 3) != 0)
7979                         eir_len = eir_append_data(ev->eir, eir_len,
7980                                                   EIR_CLASS_OF_DEV,
7981                                                   conn->dev_class, 3);
7982         }
7983
7984         ev->eir_len = cpu_to_le16(eir_len);
7985
7986         mgmt_event(MGMT_EV_DEVICE_CONNECTED, hdev, buf,
7987                     sizeof(*ev) + eir_len, NULL);
7988 }
7989
7990 static void disconnect_rsp(struct mgmt_pending_cmd *cmd, void *data)
7991 {
7992         struct sock **sk = data;
7993
7994         cmd->cmd_complete(cmd, 0);
7995
7996         *sk = cmd->sk;
7997         sock_hold(*sk);
7998
7999         mgmt_pending_remove(cmd);
8000 }
8001
8002 static void unpair_device_rsp(struct mgmt_pending_cmd *cmd, void *data)
8003 {
8004         struct hci_dev *hdev = data;
8005         struct mgmt_cp_unpair_device *cp = cmd->param;
8006
8007         device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, cmd->sk);
8008
8009         cmd->cmd_complete(cmd, 0);
8010         mgmt_pending_remove(cmd);
8011 }
8012
8013 bool mgmt_powering_down(struct hci_dev *hdev)
8014 {
8015         struct mgmt_pending_cmd *cmd;
8016         struct mgmt_mode *cp;
8017
8018         cmd = pending_find(MGMT_OP_SET_POWERED, hdev);
8019         if (!cmd)
8020                 return false;
8021
8022         cp = cmd->param;
8023         if (!cp->val)
8024                 return true;
8025
8026         return false;
8027 }
8028
8029 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
8030                               u8 link_type, u8 addr_type, u8 reason,
8031                               bool mgmt_connected)
8032 {
8033         struct mgmt_ev_device_disconnected ev;
8034         struct sock *sk = NULL;
8035
8036         /* The connection is still in hci_conn_hash so test for 1
8037          * instead of 0 to know if this is the last one.
8038          */
8039         if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) {
8040                 cancel_delayed_work(&hdev->power_off);
8041                 queue_work(hdev->req_workqueue, &hdev->power_off.work);
8042         }
8043
8044         if (!mgmt_connected)
8045                 return;
8046
8047         if (link_type != ACL_LINK && link_type != LE_LINK)
8048                 return;
8049
8050         mgmt_pending_foreach(MGMT_OP_DISCONNECT, hdev, disconnect_rsp, &sk);
8051
8052         bacpy(&ev.addr.bdaddr, bdaddr);
8053         ev.addr.type = link_to_bdaddr(link_type, addr_type);
8054         ev.reason = reason;
8055
8056         mgmt_event(MGMT_EV_DEVICE_DISCONNECTED, hdev, &ev, sizeof(ev), sk);
8057
8058         if (sk)
8059                 sock_put(sk);
8060
8061         mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp,
8062                              hdev);
8063 }
8064
8065 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
8066                             u8 link_type, u8 addr_type, u8 status)
8067 {
8068         u8 bdaddr_type = link_to_bdaddr(link_type, addr_type);
8069         struct mgmt_cp_disconnect *cp;
8070         struct mgmt_pending_cmd *cmd;
8071
8072         mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp,
8073                              hdev);
8074
8075         cmd = pending_find(MGMT_OP_DISCONNECT, hdev);
8076         if (!cmd)
8077                 return;
8078
8079         cp = cmd->param;
8080
8081         if (bacmp(bdaddr, &cp->addr.bdaddr))
8082                 return;
8083
8084         if (cp->addr.type != bdaddr_type)
8085                 return;
8086
8087         cmd->cmd_complete(cmd, mgmt_status(status));
8088         mgmt_pending_remove(cmd);
8089 }
8090
8091 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8092                          u8 addr_type, u8 status)
8093 {
8094         struct mgmt_ev_connect_failed ev;
8095
8096         /* The connection is still in hci_conn_hash so test for 1
8097          * instead of 0 to know if this is the last one.
8098          */
8099         if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) {
8100                 cancel_delayed_work(&hdev->power_off);
8101                 queue_work(hdev->req_workqueue, &hdev->power_off.work);
8102         }
8103
8104         bacpy(&ev.addr.bdaddr, bdaddr);
8105         ev.addr.type = link_to_bdaddr(link_type, addr_type);
8106         ev.status = mgmt_status(status);
8107
8108         mgmt_event(MGMT_EV_CONNECT_FAILED, hdev, &ev, sizeof(ev), NULL);
8109 }
8110
8111 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure)
8112 {
8113         struct mgmt_ev_pin_code_request ev;
8114
8115         bacpy(&ev.addr.bdaddr, bdaddr);
8116         ev.addr.type = BDADDR_BREDR;
8117         ev.secure = secure;
8118
8119         mgmt_event(MGMT_EV_PIN_CODE_REQUEST, hdev, &ev, sizeof(ev), NULL);
8120 }
8121
8122 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8123                                   u8 status)
8124 {
8125         struct mgmt_pending_cmd *cmd;
8126
8127         cmd = pending_find(MGMT_OP_PIN_CODE_REPLY, hdev);
8128         if (!cmd)
8129                 return;
8130
8131         cmd->cmd_complete(cmd, mgmt_status(status));
8132         mgmt_pending_remove(cmd);
8133 }
8134
8135 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8136                                       u8 status)
8137 {
8138         struct mgmt_pending_cmd *cmd;
8139
8140         cmd = pending_find(MGMT_OP_PIN_CODE_NEG_REPLY, hdev);
8141         if (!cmd)
8142                 return;
8143
8144         cmd->cmd_complete(cmd, mgmt_status(status));
8145         mgmt_pending_remove(cmd);
8146 }
8147
8148 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
8149                               u8 link_type, u8 addr_type, u32 value,
8150                               u8 confirm_hint)
8151 {
8152         struct mgmt_ev_user_confirm_request ev;
8153
8154         BT_DBG("%s", hdev->name);
8155
8156         bacpy(&ev.addr.bdaddr, bdaddr);
8157         ev.addr.type = link_to_bdaddr(link_type, addr_type);
8158         ev.confirm_hint = confirm_hint;
8159         ev.value = cpu_to_le32(value);
8160
8161         return mgmt_event(MGMT_EV_USER_CONFIRM_REQUEST, hdev, &ev, sizeof(ev),
8162                           NULL);
8163 }
8164
8165 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
8166                               u8 link_type, u8 addr_type)
8167 {
8168         struct mgmt_ev_user_passkey_request ev;
8169
8170         BT_DBG("%s", hdev->name);
8171
8172         bacpy(&ev.addr.bdaddr, bdaddr);
8173         ev.addr.type = link_to_bdaddr(link_type, addr_type);
8174
8175         return mgmt_event(MGMT_EV_USER_PASSKEY_REQUEST, hdev, &ev, sizeof(ev),
8176                           NULL);
8177 }
8178
8179 static int user_pairing_resp_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8180                                       u8 link_type, u8 addr_type, u8 status,
8181                                       u8 opcode)
8182 {
8183         struct mgmt_pending_cmd *cmd;
8184
8185         cmd = pending_find(opcode, hdev);
8186         if (!cmd)
8187                 return -ENOENT;
8188
8189         cmd->cmd_complete(cmd, mgmt_status(status));
8190         mgmt_pending_remove(cmd);
8191
8192         return 0;
8193 }
8194
8195 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8196                                      u8 link_type, u8 addr_type, u8 status)
8197 {
8198         return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8199                                           status, MGMT_OP_USER_CONFIRM_REPLY);
8200 }
8201
8202 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8203                                          u8 link_type, u8 addr_type, u8 status)
8204 {
8205         return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8206                                           status,
8207                                           MGMT_OP_USER_CONFIRM_NEG_REPLY);
8208 }
8209
8210 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8211                                      u8 link_type, u8 addr_type, u8 status)
8212 {
8213         return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8214                                           status, MGMT_OP_USER_PASSKEY_REPLY);
8215 }
8216
8217 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
8218                                          u8 link_type, u8 addr_type, u8 status)
8219 {
8220         return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type,
8221                                           status,
8222                                           MGMT_OP_USER_PASSKEY_NEG_REPLY);
8223 }
8224
8225 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
8226                              u8 link_type, u8 addr_type, u32 passkey,
8227                              u8 entered)
8228 {
8229         struct mgmt_ev_passkey_notify ev;
8230
8231         BT_DBG("%s", hdev->name);
8232
8233         bacpy(&ev.addr.bdaddr, bdaddr);
8234         ev.addr.type = link_to_bdaddr(link_type, addr_type);
8235         ev.passkey = __cpu_to_le32(passkey);
8236         ev.entered = entered;
8237
8238         return mgmt_event(MGMT_EV_PASSKEY_NOTIFY, hdev, &ev, sizeof(ev), NULL);
8239 }
8240
8241 void mgmt_auth_failed(struct hci_conn *conn, u8 hci_status)
8242 {
8243         struct mgmt_ev_auth_failed ev;
8244         struct mgmt_pending_cmd *cmd;
8245         u8 status = mgmt_status(hci_status);
8246
8247         bacpy(&ev.addr.bdaddr, &conn->dst);
8248         ev.addr.type = link_to_bdaddr(conn->type, conn->dst_type);
8249         ev.status = status;
8250
8251         cmd = find_pairing(conn);
8252
8253         mgmt_event(MGMT_EV_AUTH_FAILED, conn->hdev, &ev, sizeof(ev),
8254                     cmd ? cmd->sk : NULL);
8255
8256         if (cmd) {
8257                 cmd->cmd_complete(cmd, status);
8258                 mgmt_pending_remove(cmd);
8259         }
8260 }
8261
8262 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status)
8263 {
8264         struct cmd_lookup match = { NULL, hdev };
8265         bool changed;
8266
8267         if (status) {
8268                 u8 mgmt_err = mgmt_status(status);
8269                 mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev,
8270                                      cmd_status_rsp, &mgmt_err);
8271                 return;
8272         }
8273
8274         if (test_bit(HCI_AUTH, &hdev->flags))
8275                 changed = !hci_dev_test_and_set_flag(hdev, HCI_LINK_SECURITY);
8276         else
8277                 changed = hci_dev_test_and_clear_flag(hdev, HCI_LINK_SECURITY);
8278
8279         mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev, settings_rsp,
8280                              &match);
8281
8282         if (changed)
8283                 new_settings(hdev, match.sk);
8284
8285         if (match.sk)
8286                 sock_put(match.sk);
8287 }
8288
8289 static void clear_eir(struct hci_request *req)
8290 {
8291         struct hci_dev *hdev = req->hdev;
8292         struct hci_cp_write_eir cp;
8293
8294         if (!lmp_ext_inq_capable(hdev))
8295                 return;
8296
8297         memset(hdev->eir, 0, sizeof(hdev->eir));
8298
8299         memset(&cp, 0, sizeof(cp));
8300
8301         hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
8302 }
8303
8304 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status)
8305 {
8306         struct cmd_lookup match = { NULL, hdev };
8307         struct hci_request req;
8308         bool changed = false;
8309
8310         if (status) {
8311                 u8 mgmt_err = mgmt_status(status);
8312
8313                 if (enable && hci_dev_test_and_clear_flag(hdev,
8314                                                           HCI_SSP_ENABLED)) {
8315                         hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
8316                         new_settings(hdev, NULL);
8317                 }
8318
8319                 mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, cmd_status_rsp,
8320                                      &mgmt_err);
8321                 return;
8322         }
8323
8324         if (enable) {
8325                 changed = !hci_dev_test_and_set_flag(hdev, HCI_SSP_ENABLED);
8326         } else {
8327                 changed = hci_dev_test_and_clear_flag(hdev, HCI_SSP_ENABLED);
8328                 if (!changed)
8329                         changed = hci_dev_test_and_clear_flag(hdev,
8330                                                               HCI_HS_ENABLED);
8331                 else
8332                         hci_dev_clear_flag(hdev, HCI_HS_ENABLED);
8333         }
8334
8335         mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, settings_rsp, &match);
8336
8337         if (changed)
8338                 new_settings(hdev, match.sk);
8339
8340         if (match.sk)
8341                 sock_put(match.sk);
8342
8343         hci_req_init(&req, hdev);
8344
8345         if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) {
8346                 if (hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS))
8347                         hci_req_add(&req, HCI_OP_WRITE_SSP_DEBUG_MODE,
8348                                     sizeof(enable), &enable);
8349                 update_eir(&req);
8350         } else {
8351                 clear_eir(&req);
8352         }
8353
8354         hci_req_run(&req, NULL);
8355 }
8356
8357 static void sk_lookup(struct mgmt_pending_cmd *cmd, void *data)
8358 {
8359         struct cmd_lookup *match = data;
8360
8361         if (match->sk == NULL) {
8362                 match->sk = cmd->sk;
8363                 sock_hold(match->sk);
8364         }
8365 }
8366
8367 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
8368                                     u8 status)
8369 {
8370         struct cmd_lookup match = { NULL, hdev, mgmt_status(status) };
8371
8372         mgmt_pending_foreach(MGMT_OP_SET_DEV_CLASS, hdev, sk_lookup, &match);
8373         mgmt_pending_foreach(MGMT_OP_ADD_UUID, hdev, sk_lookup, &match);
8374         mgmt_pending_foreach(MGMT_OP_REMOVE_UUID, hdev, sk_lookup, &match);
8375
8376         if (!status)
8377                 mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev,
8378                                    dev_class, 3, NULL);
8379
8380         if (match.sk)
8381                 sock_put(match.sk);
8382 }
8383
8384 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status)
8385 {
8386         struct mgmt_cp_set_local_name ev;
8387         struct mgmt_pending_cmd *cmd;
8388
8389         if (status)
8390                 return;
8391
8392         memset(&ev, 0, sizeof(ev));
8393         memcpy(ev.name, name, HCI_MAX_NAME_LENGTH);
8394         memcpy(ev.short_name, hdev->short_name, HCI_MAX_SHORT_NAME_LENGTH);
8395
8396         cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev);
8397         if (!cmd) {
8398                 memcpy(hdev->dev_name, name, sizeof(hdev->dev_name));
8399
8400                 /* If this is a HCI command related to powering on the
8401                  * HCI dev don't send any mgmt signals.
8402                  */
8403                 if (pending_find(MGMT_OP_SET_POWERED, hdev))
8404                         return;
8405         }
8406
8407         mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, &ev, sizeof(ev),
8408                            cmd ? cmd->sk : NULL);
8409 }
8410
8411 static inline bool has_uuid(u8 *uuid, u16 uuid_count, u8 (*uuids)[16])
8412 {
8413         int i;
8414
8415         for (i = 0; i < uuid_count; i++) {
8416                 if (!memcmp(uuid, uuids[i], 16))
8417                         return true;
8418         }
8419
8420         return false;
8421 }
8422
8423 static bool eir_has_uuids(u8 *eir, u16 eir_len, u16 uuid_count, u8 (*uuids)[16])
8424 {
8425         u16 parsed = 0;
8426
8427         while (parsed < eir_len) {
8428                 u8 field_len = eir[0];
8429                 u8 uuid[16];
8430                 int i;
8431
8432                 if (field_len == 0)
8433                         break;
8434
8435                 if (eir_len - parsed < field_len + 1)
8436                         break;
8437
8438                 switch (eir[1]) {
8439                 case EIR_UUID16_ALL:
8440                 case EIR_UUID16_SOME:
8441                         for (i = 0; i + 3 <= field_len; i += 2) {
8442                                 memcpy(uuid, bluetooth_base_uuid, 16);
8443                                 uuid[13] = eir[i + 3];
8444                                 uuid[12] = eir[i + 2];
8445                                 if (has_uuid(uuid, uuid_count, uuids))
8446                                         return true;
8447                         }
8448                         break;
8449                 case EIR_UUID32_ALL:
8450                 case EIR_UUID32_SOME:
8451                         for (i = 0; i + 5 <= field_len; i += 4) {
8452                                 memcpy(uuid, bluetooth_base_uuid, 16);
8453                                 uuid[15] = eir[i + 5];
8454                                 uuid[14] = eir[i + 4];
8455                                 uuid[13] = eir[i + 3];
8456                                 uuid[12] = eir[i + 2];
8457                                 if (has_uuid(uuid, uuid_count, uuids))
8458                                         return true;
8459                         }
8460                         break;
8461                 case EIR_UUID128_ALL:
8462                 case EIR_UUID128_SOME:
8463                         for (i = 0; i + 17 <= field_len; i += 16) {
8464                                 memcpy(uuid, eir + i + 2, 16);
8465                                 if (has_uuid(uuid, uuid_count, uuids))
8466                                         return true;
8467                         }
8468                         break;
8469                 }
8470
8471                 parsed += field_len + 1;
8472                 eir += field_len + 1;
8473         }
8474
8475         return false;
8476 }
8477
8478 static void restart_le_scan(struct hci_dev *hdev)
8479 {
8480         /* If controller is not scanning we are done. */
8481         if (!hci_dev_test_flag(hdev, HCI_LE_SCAN))
8482                 return;
8483
8484         if (time_after(jiffies + DISCOV_LE_RESTART_DELAY,
8485                        hdev->discovery.scan_start +
8486                        hdev->discovery.scan_duration))
8487                 return;
8488
8489         queue_delayed_work(hdev->workqueue, &hdev->le_scan_restart,
8490                            DISCOV_LE_RESTART_DELAY);
8491 }
8492
8493 static bool is_filter_match(struct hci_dev *hdev, s8 rssi, u8 *eir,
8494                             u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len)
8495 {
8496         /* If a RSSI threshold has been specified, and
8497          * HCI_QUIRK_STRICT_DUPLICATE_FILTER is not set, then all results with
8498          * a RSSI smaller than the RSSI threshold will be dropped. If the quirk
8499          * is set, let it through for further processing, as we might need to
8500          * restart the scan.
8501          *
8502          * For BR/EDR devices (pre 1.2) providing no RSSI during inquiry,
8503          * the results are also dropped.
8504          */
8505         if (hdev->discovery.rssi != HCI_RSSI_INVALID &&
8506             (rssi == HCI_RSSI_INVALID ||
8507             (rssi < hdev->discovery.rssi &&
8508              !test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks))))
8509                 return  false;
8510
8511         if (hdev->discovery.uuid_count != 0) {
8512                 /* If a list of UUIDs is provided in filter, results with no
8513                  * matching UUID should be dropped.
8514                  */
8515                 if (!eir_has_uuids(eir, eir_len, hdev->discovery.uuid_count,
8516                                    hdev->discovery.uuids) &&
8517                     !eir_has_uuids(scan_rsp, scan_rsp_len,
8518                                    hdev->discovery.uuid_count,
8519                                    hdev->discovery.uuids))
8520                         return false;
8521         }
8522
8523         /* If duplicate filtering does not report RSSI changes, then restart
8524          * scanning to ensure updated result with updated RSSI values.
8525          */
8526         if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks)) {
8527                 restart_le_scan(hdev);
8528
8529                 /* Validate RSSI value against the RSSI threshold once more. */
8530                 if (hdev->discovery.rssi != HCI_RSSI_INVALID &&
8531                     rssi < hdev->discovery.rssi)
8532                         return false;
8533         }
8534
8535         return true;
8536 }
8537
8538 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8539                        u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
8540                        u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len)
8541 {
8542         char buf[512];
8543         struct mgmt_ev_device_found *ev = (void *)buf;
8544         size_t ev_size;
8545
8546         /* Don't send events for a non-kernel initiated discovery. With
8547          * LE one exception is if we have pend_le_reports > 0 in which
8548          * case we're doing passive scanning and want these events.
8549          */
8550         if (!hci_discovery_active(hdev)) {
8551                 if (link_type == ACL_LINK)
8552                         return;
8553                 if (link_type == LE_LINK && list_empty(&hdev->pend_le_reports))
8554                         return;
8555         }
8556
8557         if (hdev->discovery.result_filtering) {
8558                 /* We are using service discovery */
8559                 if (!is_filter_match(hdev, rssi, eir, eir_len, scan_rsp,
8560                                      scan_rsp_len))
8561                         return;
8562         }
8563
8564         /* Make sure that the buffer is big enough. The 5 extra bytes
8565          * are for the potential CoD field.
8566          */
8567         if (sizeof(*ev) + eir_len + scan_rsp_len + 5 > sizeof(buf))
8568                 return;
8569
8570         memset(buf, 0, sizeof(buf));
8571
8572         /* In case of device discovery with BR/EDR devices (pre 1.2), the
8573          * RSSI value was reported as 0 when not available. This behavior
8574          * is kept when using device discovery. This is required for full
8575          * backwards compatibility with the API.
8576          *
8577          * However when using service discovery, the value 127 will be
8578          * returned when the RSSI is not available.
8579          */
8580         if (rssi == HCI_RSSI_INVALID && !hdev->discovery.report_invalid_rssi &&
8581             link_type == ACL_LINK)
8582                 rssi = 0;
8583
8584         bacpy(&ev->addr.bdaddr, bdaddr);
8585         ev->addr.type = link_to_bdaddr(link_type, addr_type);
8586         ev->rssi = rssi;
8587         ev->flags = cpu_to_le32(flags);
8588
8589         if (eir_len > 0)
8590                 /* Copy EIR or advertising data into event */
8591                 memcpy(ev->eir, eir, eir_len);
8592
8593         if (dev_class && !eir_has_data_type(ev->eir, eir_len, EIR_CLASS_OF_DEV))
8594                 eir_len = eir_append_data(ev->eir, eir_len, EIR_CLASS_OF_DEV,
8595                                           dev_class, 3);
8596
8597         if (scan_rsp_len > 0)
8598                 /* Append scan response data to event */
8599                 memcpy(ev->eir + eir_len, scan_rsp, scan_rsp_len);
8600
8601         ev->eir_len = cpu_to_le16(eir_len + scan_rsp_len);
8602         ev_size = sizeof(*ev) + eir_len + scan_rsp_len;
8603
8604         mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, ev_size, NULL);
8605 }
8606
8607 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
8608                       u8 addr_type, s8 rssi, u8 *name, u8 name_len)
8609 {
8610         struct mgmt_ev_device_found *ev;
8611         char buf[sizeof(*ev) + HCI_MAX_NAME_LENGTH + 2];
8612         u16 eir_len;
8613
8614         ev = (struct mgmt_ev_device_found *) buf;
8615
8616         memset(buf, 0, sizeof(buf));
8617
8618         bacpy(&ev->addr.bdaddr, bdaddr);
8619         ev->addr.type = link_to_bdaddr(link_type, addr_type);
8620         ev->rssi = rssi;
8621
8622         eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, name,
8623                                   name_len);
8624
8625         ev->eir_len = cpu_to_le16(eir_len);
8626
8627         mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, sizeof(*ev) + eir_len, NULL);
8628 }
8629
8630 void mgmt_discovering(struct hci_dev *hdev, u8 discovering)
8631 {
8632         struct mgmt_ev_discovering ev;
8633
8634         BT_DBG("%s discovering %u", hdev->name, discovering);
8635
8636         memset(&ev, 0, sizeof(ev));
8637         ev.type = hdev->discovery.type;
8638         ev.discovering = discovering;
8639
8640         mgmt_event(MGMT_EV_DISCOVERING, hdev, &ev, sizeof(ev), NULL);
8641 }
8642
8643 static void adv_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode)
8644 {
8645         BT_DBG("%s status %u", hdev->name, status);
8646 }
8647
8648 void mgmt_reenable_advertising(struct hci_dev *hdev)
8649 {
8650         struct hci_request req;
8651         u8 instance;
8652
8653         if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) &&
8654             !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))
8655                 return;
8656
8657         instance = get_current_adv_instance(hdev);
8658
8659         hci_req_init(&req, hdev);
8660
8661         if (instance) {
8662                 schedule_adv_instance(&req, instance, true);
8663         } else {
8664                 update_adv_data(&req);
8665                 update_scan_rsp_data(&req);
8666                 enable_advertising(&req);
8667         }
8668
8669         hci_req_run(&req, adv_enable_complete);
8670 }
8671
8672 static struct hci_mgmt_chan chan = {
8673         .channel        = HCI_CHANNEL_CONTROL,
8674         .handler_count  = ARRAY_SIZE(mgmt_handlers),
8675         .handlers       = mgmt_handlers,
8676         .hdev_init      = mgmt_init_hdev,
8677 };
8678
8679 int mgmt_init(void)
8680 {
8681         return hci_mgmt_chan_register(&chan);
8682 }
8683
8684 void mgmt_exit(void)
8685 {
8686         hci_mgmt_chan_unregister(&chan);
8687 }