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