net/bluetooth/hci_event.c

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
   4
   5    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   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 event handling. */
  26
  27 #include <asm/unaligned.h>
  28
  29 #include <net/bluetooth/bluetooth.h>
  30 #include <net/bluetooth/hci_core.h>
  31 #include <net/bluetooth/mgmt.h>
  32
  33 #include "hci_request.h"
  34 #include "hci_debugfs.h"
  35 #include "a2mp.h"
  36 #include "amp.h"
  37 #include "smp.h"
  38 #include "msft.h"
  39 #include "eir.h"
  40
  41 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
  42                  "\x00\x00\x00\x00\x00\x00\x00\x00"
  43
  44 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000)
  45
  46 /* Handle HCI Event packets */
  47
  48 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  49                              u8 ev, size_t len)
  50 {
  51         void *data;
  52
  53         data = skb_pull_data(skb, len);
  54         if (!data)
  55                 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev);
  56
  57         return data;
  58 }
  59
  60 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  61                              u16 op, size_t len)
  62 {
  63         void *data;
  64
  65         data = skb_pull_data(skb, len);
  66         if (!data)
  67                 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op);
  68
  69         return data;
  70 }
  71
  72 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  73                                 u8 ev, size_t len)
  74 {
  75         void *data;
  76
  77         data = skb_pull_data(skb, len);
  78         if (!data)
  79                 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev);
  80
  81         return data;
  82 }
  83
  84 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data,
  85                                 struct sk_buff *skb)
  86 {
  87         struct hci_ev_status *rp = data;
  88
  89         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
  90
  91         /* It is possible that we receive Inquiry Complete event right
  92          * before we receive Inquiry Cancel Command Complete event, in
  93          * which case the latter event should have status of Command
  94          * Disallowed (0x0c). This should not be treated as error, since
  95          * we actually achieve what Inquiry Cancel wants to achieve,
  96          * which is to end the last Inquiry session.
  97          */
  98         if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) {
  99                 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command");
 100                 rp->status = 0x00;
 101         }
 102
 103         if (rp->status)
 104                 return rp->status;
 105
 106         clear_bit(HCI_INQUIRY, &hdev->flags);
 107         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
 108         wake_up_bit(&hdev->flags, HCI_INQUIRY);
 109
 110         hci_dev_lock(hdev);
 111         /* Set discovery state to stopped if we're not doing LE active
 112          * scanning.
 113          */
 114         if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
 115             hdev->le_scan_type != LE_SCAN_ACTIVE)
 116                 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
 117         hci_dev_unlock(hdev);
 118
 119         hci_conn_check_pending(hdev);
 120
 121         return rp->status;
 122 }
 123
 124 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data,
 125                               struct sk_buff *skb)
 126 {
 127         struct hci_ev_status *rp = data;
 128
 129         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 130
 131         if (rp->status)
 132                 return rp->status;
 133
 134         hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
 135
 136         return rp->status;
 137 }
 138
 139 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data,
 140                                    struct sk_buff *skb)
 141 {
 142         struct hci_ev_status *rp = data;
 143
 144         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 145
 146         if (rp->status)
 147                 return rp->status;
 148
 149         hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
 150
 151         hci_conn_check_pending(hdev);
 152
 153         return rp->status;
 154 }
 155
 156 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data,
 157                                         struct sk_buff *skb)
 158 {
 159         struct hci_ev_status *rp = data;
 160
 161         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 162
 163         return rp->status;
 164 }
 165
 166 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data,
 167                                 struct sk_buff *skb)
 168 {
 169         struct hci_rp_role_discovery *rp = data;
 170         struct hci_conn *conn;
 171
 172         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 173
 174         if (rp->status)
 175                 return rp->status;
 176
 177         hci_dev_lock(hdev);
 178
 179         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 180         if (conn)
 181                 conn->role = rp->role;
 182
 183         hci_dev_unlock(hdev);
 184
 185         return rp->status;
 186 }
 187
 188 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data,
 189                                   struct sk_buff *skb)
 190 {
 191         struct hci_rp_read_link_policy *rp = data;
 192         struct hci_conn *conn;
 193
 194         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 195
 196         if (rp->status)
 197                 return rp->status;
 198
 199         hci_dev_lock(hdev);
 200
 201         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 202         if (conn)
 203                 conn->link_policy = __le16_to_cpu(rp->policy);
 204
 205         hci_dev_unlock(hdev);
 206
 207         return rp->status;
 208 }
 209
 210 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data,
 211                                    struct sk_buff *skb)
 212 {
 213         struct hci_rp_write_link_policy *rp = data;
 214         struct hci_conn *conn;
 215         void *sent;
 216
 217         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 218
 219         if (rp->status)
 220                 return rp->status;
 221
 222         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
 223         if (!sent)
 224                 return rp->status;
 225
 226         hci_dev_lock(hdev);
 227
 228         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 229         if (conn)
 230                 conn->link_policy = get_unaligned_le16(sent + 2);
 231
 232         hci_dev_unlock(hdev);
 233
 234         return rp->status;
 235 }
 236
 237 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data,
 238                                       struct sk_buff *skb)
 239 {
 240         struct hci_rp_read_def_link_policy *rp = data;
 241
 242         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 243
 244         if (rp->status)
 245                 return rp->status;
 246
 247         hdev->link_policy = __le16_to_cpu(rp->policy);
 248
 249         return rp->status;
 250 }
 251
 252 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data,
 253                                        struct sk_buff *skb)
 254 {
 255         struct hci_ev_status *rp = data;
 256         void *sent;
 257
 258         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 259
 260         if (rp->status)
 261                 return rp->status;
 262
 263         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
 264         if (!sent)
 265                 return rp->status;
 266
 267         hdev->link_policy = get_unaligned_le16(sent);
 268
 269         return rp->status;
 270 }
 271
 272 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb)
 273 {
 274         struct hci_ev_status *rp = data;
 275
 276         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 277
 278         clear_bit(HCI_RESET, &hdev->flags);
 279
 280         if (rp->status)
 281                 return rp->status;
 282
 283         /* Reset all non-persistent flags */
 284         hci_dev_clear_volatile_flags(hdev);
 285
 286         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
 287
 288         hdev->inq_tx_power = HCI_TX_POWER_INVALID;
 289         hdev->adv_tx_power = HCI_TX_POWER_INVALID;
 290
 291         memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
 292         hdev->adv_data_len = 0;
 293
 294         memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
 295         hdev->scan_rsp_data_len = 0;
 296
 297         hdev->le_scan_type = LE_SCAN_PASSIVE;
 298
 299         hdev->ssp_debug_mode = 0;
 300
 301         hci_bdaddr_list_clear(&hdev->le_accept_list);
 302         hci_bdaddr_list_clear(&hdev->le_resolv_list);
 303
 304         return rp->status;
 305 }
 306
 307 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data,
 308                                       struct sk_buff *skb)
 309 {
 310         struct hci_rp_read_stored_link_key *rp = data;
 311         struct hci_cp_read_stored_link_key *sent;
 312
 313         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 314
 315         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
 316         if (!sent)
 317                 return rp->status;
 318
 319         if (!rp->status && sent->read_all == 0x01) {
 320                 hdev->stored_max_keys = le16_to_cpu(rp->max_keys);
 321                 hdev->stored_num_keys = le16_to_cpu(rp->num_keys);
 322         }
 323
 324         return rp->status;
 325 }
 326
 327 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data,
 328                                         struct sk_buff *skb)
 329 {
 330         struct hci_rp_delete_stored_link_key *rp = data;
 331         u16 num_keys;
 332
 333         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 334
 335         if (rp->status)
 336                 return rp->status;
 337
 338         num_keys = le16_to_cpu(rp->num_keys);
 339
 340         if (num_keys <= hdev->stored_num_keys)
 341                 hdev->stored_num_keys -= num_keys;
 342         else
 343                 hdev->stored_num_keys = 0;
 344
 345         return rp->status;
 346 }
 347
 348 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data,
 349                                   struct sk_buff *skb)
 350 {
 351         struct hci_ev_status *rp = data;
 352         void *sent;
 353
 354         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 355
 356         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
 357         if (!sent)
 358                 return rp->status;
 359
 360         hci_dev_lock(hdev);
 361
 362         if (hci_dev_test_flag(hdev, HCI_MGMT))
 363                 mgmt_set_local_name_complete(hdev, sent, rp->status);
 364         else if (!rp->status)
 365                 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
 366
 367         hci_dev_unlock(hdev);
 368
 369         return rp->status;
 370 }
 371
 372 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data,
 373                                  struct sk_buff *skb)
 374 {
 375         struct hci_rp_read_local_name *rp = data;
 376
 377         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 378
 379         if (rp->status)
 380                 return rp->status;
 381
 382         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 383             hci_dev_test_flag(hdev, HCI_CONFIG))
 384                 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
 385
 386         return rp->status;
 387 }
 388
 389 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data,
 390                                    struct sk_buff *skb)
 391 {
 392         struct hci_ev_status *rp = data;
 393         void *sent;
 394
 395         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 396
 397         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
 398         if (!sent)
 399                 return rp->status;
 400
 401         hci_dev_lock(hdev);
 402
 403         if (!rp->status) {
 404                 __u8 param = *((__u8 *) sent);
 405
 406                 if (param == AUTH_ENABLED)
 407                         set_bit(HCI_AUTH, &hdev->flags);
 408                 else
 409                         clear_bit(HCI_AUTH, &hdev->flags);
 410         }
 411
 412         if (hci_dev_test_flag(hdev, HCI_MGMT))
 413                 mgmt_auth_enable_complete(hdev, rp->status);
 414
 415         hci_dev_unlock(hdev);
 416
 417         return rp->status;
 418 }
 419
 420 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data,
 421                                     struct sk_buff *skb)
 422 {
 423         struct hci_ev_status *rp = data;
 424         __u8 param;
 425         void *sent;
 426
 427         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 428
 429         if (rp->status)
 430                 return rp->status;
 431
 432         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
 433         if (!sent)
 434                 return rp->status;
 435
 436         param = *((__u8 *) sent);
 437
 438         if (param)
 439                 set_bit(HCI_ENCRYPT, &hdev->flags);
 440         else
 441                 clear_bit(HCI_ENCRYPT, &hdev->flags);
 442
 443         return rp->status;
 444 }
 445
 446 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data,
 447                                    struct sk_buff *skb)
 448 {
 449         struct hci_ev_status *rp = data;
 450         __u8 param;
 451         void *sent;
 452
 453         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 454
 455         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
 456         if (!sent)
 457                 return rp->status;
 458
 459         param = *((__u8 *) sent);
 460
 461         hci_dev_lock(hdev);
 462
 463         if (rp->status) {
 464                 hdev->discov_timeout = 0;
 465                 goto done;
 466         }
 467
 468         if (param & SCAN_INQUIRY)
 469                 set_bit(HCI_ISCAN, &hdev->flags);
 470         else
 471                 clear_bit(HCI_ISCAN, &hdev->flags);
 472
 473         if (param & SCAN_PAGE)
 474                 set_bit(HCI_PSCAN, &hdev->flags);
 475         else
 476                 clear_bit(HCI_PSCAN, &hdev->flags);
 477
 478 done:
 479         hci_dev_unlock(hdev);
 480
 481         return rp->status;
 482 }
 483
 484 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data,
 485                                   struct sk_buff *skb)
 486 {
 487         struct hci_ev_status *rp = data;
 488         struct hci_cp_set_event_filter *cp;
 489         void *sent;
 490
 491         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 492
 493         if (rp->status)
 494                 return rp->status;
 495
 496         sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT);
 497         if (!sent)
 498                 return rp->status;
 499
 500         cp = (struct hci_cp_set_event_filter *)sent;
 501
 502         if (cp->flt_type == HCI_FLT_CLEAR_ALL)
 503                 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
 504         else
 505                 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
 506
 507         return rp->status;
 508 }
 509
 510 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data,
 511                                    struct sk_buff *skb)
 512 {
 513         struct hci_rp_read_class_of_dev *rp = data;
 514
 515         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 516
 517         if (rp->status)
 518                 return rp->status;
 519
 520         memcpy(hdev->dev_class, rp->dev_class, 3);
 521
 522         bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2],
 523                    hdev->dev_class[1], hdev->dev_class[0]);
 524
 525         return rp->status;
 526 }
 527
 528 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data,
 529                                     struct sk_buff *skb)
 530 {
 531         struct hci_ev_status *rp = data;
 532         void *sent;
 533
 534         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 535
 536         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
 537         if (!sent)
 538                 return rp->status;
 539
 540         hci_dev_lock(hdev);
 541
 542         if (!rp->status)
 543                 memcpy(hdev->dev_class, sent, 3);
 544
 545         if (hci_dev_test_flag(hdev, HCI_MGMT))
 546                 mgmt_set_class_of_dev_complete(hdev, sent, rp->status);
 547
 548         hci_dev_unlock(hdev);
 549
 550         return rp->status;
 551 }
 552
 553 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data,
 554                                     struct sk_buff *skb)
 555 {
 556         struct hci_rp_read_voice_setting *rp = data;
 557         __u16 setting;
 558
 559         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 560
 561         if (rp->status)
 562                 return rp->status;
 563
 564         setting = __le16_to_cpu(rp->voice_setting);
 565
 566         if (hdev->voice_setting == setting)
 567                 return rp->status;
 568
 569         hdev->voice_setting = setting;
 570
 571         bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
 572
 573         if (hdev->notify)
 574                 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
 575
 576         return rp->status;
 577 }
 578
 579 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data,
 580                                      struct sk_buff *skb)
 581 {
 582         struct hci_ev_status *rp = data;
 583         __u16 setting;
 584         void *sent;
 585
 586         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 587
 588         if (rp->status)
 589                 return rp->status;
 590
 591         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
 592         if (!sent)
 593                 return rp->status;
 594
 595         setting = get_unaligned_le16(sent);
 596
 597         if (hdev->voice_setting == setting)
 598                 return rp->status;
 599
 600         hdev->voice_setting = setting;
 601
 602         bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
 603
 604         if (hdev->notify)
 605                 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
 606
 607         return rp->status;
 608 }
 609
 610 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data,
 611                                         struct sk_buff *skb)
 612 {
 613         struct hci_rp_read_num_supported_iac *rp = data;
 614
 615         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 616
 617         if (rp->status)
 618                 return rp->status;
 619
 620         hdev->num_iac = rp->num_iac;
 621
 622         bt_dev_dbg(hdev, "num iac %d", hdev->num_iac);
 623
 624         return rp->status;
 625 }
 626
 627 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data,
 628                                 struct sk_buff *skb)
 629 {
 630         struct hci_ev_status *rp = data;
 631         struct hci_cp_write_ssp_mode *sent;
 632
 633         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 634
 635         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
 636         if (!sent)
 637                 return rp->status;
 638
 639         hci_dev_lock(hdev);
 640
 641         if (!rp->status) {
 642                 if (sent->mode)
 643                         hdev->features[1][0] |= LMP_HOST_SSP;
 644                 else
 645                         hdev->features[1][0] &= ~LMP_HOST_SSP;
 646         }
 647
 648         if (!rp->status) {
 649                 if (sent->mode)
 650                         hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
 651                 else
 652                         hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
 653         }
 654
 655         hci_dev_unlock(hdev);
 656
 657         return rp->status;
 658 }
 659
 660 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data,
 661                                   struct sk_buff *skb)
 662 {
 663         struct hci_ev_status *rp = data;
 664         struct hci_cp_write_sc_support *sent;
 665
 666         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 667
 668         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
 669         if (!sent)
 670                 return rp->status;
 671
 672         hci_dev_lock(hdev);
 673
 674         if (!rp->status) {
 675                 if (sent->support)
 676                         hdev->features[1][0] |= LMP_HOST_SC;
 677                 else
 678                         hdev->features[1][0] &= ~LMP_HOST_SC;
 679         }
 680
 681         if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) {
 682                 if (sent->support)
 683                         hci_dev_set_flag(hdev, HCI_SC_ENABLED);
 684                 else
 685                         hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
 686         }
 687
 688         hci_dev_unlock(hdev);
 689
 690         return rp->status;
 691 }
 692
 693 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data,
 694                                     struct sk_buff *skb)
 695 {
 696         struct hci_rp_read_local_version *rp = data;
 697
 698         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 699
 700         if (rp->status)
 701                 return rp->status;
 702
 703         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 704             hci_dev_test_flag(hdev, HCI_CONFIG)) {
 705                 hdev->hci_ver = rp->hci_ver;
 706                 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
 707                 hdev->lmp_ver = rp->lmp_ver;
 708                 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
 709                 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
 710         }
 711
 712         return rp->status;
 713 }
 714
 715 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data,
 716                                    struct sk_buff *skb)
 717 {
 718         struct hci_rp_read_enc_key_size *rp = data;
 719         struct hci_conn *conn;
 720         u16 handle;
 721         u8 status = rp->status;
 722
 723         bt_dev_dbg(hdev, "status 0x%2.2x", status);
 724
 725         handle = le16_to_cpu(rp->handle);
 726
 727         hci_dev_lock(hdev);
 728
 729         conn = hci_conn_hash_lookup_handle(hdev, handle);
 730         if (!conn) {
 731                 status = 0xFF;
 732                 goto done;
 733         }
 734
 735         /* While unexpected, the read_enc_key_size command may fail. The most
 736          * secure approach is to then assume the key size is 0 to force a
 737          * disconnection.
 738          */
 739         if (status) {
 740                 bt_dev_err(hdev, "failed to read key size for handle %u",
 741                            handle);
 742                 conn->enc_key_size = 0;
 743         } else {
 744                 conn->enc_key_size = rp->key_size;
 745                 status = 0;
 746         }
 747
 748         hci_encrypt_cfm(conn, 0);
 749
 750 done:
 751         hci_dev_unlock(hdev);
 752
 753         return status;
 754 }
 755
 756 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data,
 757                                      struct sk_buff *skb)
 758 {
 759         struct hci_rp_read_local_commands *rp = data;
 760
 761         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 762
 763         if (rp->status)
 764                 return rp->status;
 765
 766         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 767             hci_dev_test_flag(hdev, HCI_CONFIG))
 768                 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
 769
 770         return rp->status;
 771 }
 772
 773 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data,
 774                                            struct sk_buff *skb)
 775 {
 776         struct hci_rp_read_auth_payload_to *rp = data;
 777         struct hci_conn *conn;
 778
 779         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 780
 781         if (rp->status)
 782                 return rp->status;
 783
 784         hci_dev_lock(hdev);
 785
 786         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 787         if (conn)
 788                 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
 789
 790         hci_dev_unlock(hdev);
 791
 792         return rp->status;
 793 }
 794
 795 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data,
 796                                             struct sk_buff *skb)
 797 {
 798         struct hci_rp_write_auth_payload_to *rp = data;
 799         struct hci_conn *conn;
 800         void *sent;
 801
 802         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 803
 804         if (rp->status)
 805                 return rp->status;
 806
 807         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
 808         if (!sent)
 809                 return rp->status;
 810
 811         hci_dev_lock(hdev);
 812
 813         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 814         if (conn)
 815                 conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
 816
 817         hci_dev_unlock(hdev);
 818
 819         return rp->status;
 820 }
 821
 822 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data,
 823                                      struct sk_buff *skb)
 824 {
 825         struct hci_rp_read_local_features *rp = data;
 826
 827         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 828
 829         if (rp->status)
 830                 return rp->status;
 831
 832         memcpy(hdev->features, rp->features, 8);
 833
 834         /* Adjust default settings according to features
 835          * supported by device. */
 836
 837         if (hdev->features[0][0] & LMP_3SLOT)
 838                 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
 839
 840         if (hdev->features[0][0] & LMP_5SLOT)
 841                 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
 842
 843         if (hdev->features[0][1] & LMP_HV2) {
 844                 hdev->pkt_type  |= (HCI_HV2);
 845                 hdev->esco_type |= (ESCO_HV2);
 846         }
 847
 848         if (hdev->features[0][1] & LMP_HV3) {
 849                 hdev->pkt_type  |= (HCI_HV3);
 850                 hdev->esco_type |= (ESCO_HV3);
 851         }
 852
 853         if (lmp_esco_capable(hdev))
 854                 hdev->esco_type |= (ESCO_EV3);
 855
 856         if (hdev->features[0][4] & LMP_EV4)
 857                 hdev->esco_type |= (ESCO_EV4);
 858
 859         if (hdev->features[0][4] & LMP_EV5)
 860                 hdev->esco_type |= (ESCO_EV5);
 861
 862         if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
 863                 hdev->esco_type |= (ESCO_2EV3);
 864
 865         if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
 866                 hdev->esco_type |= (ESCO_3EV3);
 867
 868         if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
 869                 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
 870
 871         return rp->status;
 872 }
 873
 874 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
 875                                          struct sk_buff *skb)
 876 {
 877         struct hci_rp_read_local_ext_features *rp = data;
 878
 879         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 880
 881         if (rp->status)
 882                 return rp->status;
 883
 884         if (hdev->max_page < rp->max_page) {
 885                 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
 886                              &hdev->quirks))
 887                         bt_dev_warn(hdev, "broken local ext features page 2");
 888                 else
 889                         hdev->max_page = rp->max_page;
 890         }
 891
 892         if (rp->page < HCI_MAX_PAGES)
 893                 memcpy(hdev->features[rp->page], rp->features, 8);
 894
 895         return rp->status;
 896 }
 897
 898 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data,
 899                                         struct sk_buff *skb)
 900 {
 901         struct hci_rp_read_flow_control_mode *rp = data;
 902
 903         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 904
 905         if (rp->status)
 906                 return rp->status;
 907
 908         hdev->flow_ctl_mode = rp->mode;
 909
 910         return rp->status;
 911 }
 912
 913 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data,
 914                                   struct sk_buff *skb)
 915 {
 916         struct hci_rp_read_buffer_size *rp = data;
 917
 918         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 919
 920         if (rp->status)
 921                 return rp->status;
 922
 923         hdev->acl_mtu  = __le16_to_cpu(rp->acl_mtu);
 924         hdev->sco_mtu  = rp->sco_mtu;
 925         hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
 926         hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
 927
 928         if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
 929                 hdev->sco_mtu  = 64;
 930                 hdev->sco_pkts = 8;
 931         }
 932
 933         hdev->acl_cnt = hdev->acl_pkts;
 934         hdev->sco_cnt = hdev->sco_pkts;
 935
 936         BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
 937                hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
 938
 939         return rp->status;
 940 }
 941
 942 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data,
 943                               struct sk_buff *skb)
 944 {
 945         struct hci_rp_read_bd_addr *rp = data;
 946
 947         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 948
 949         if (rp->status)
 950                 return rp->status;
 951
 952         if (test_bit(HCI_INIT, &hdev->flags))
 953                 bacpy(&hdev->bdaddr, &rp->bdaddr);
 954
 955         if (hci_dev_test_flag(hdev, HCI_SETUP))
 956                 bacpy(&hdev->setup_addr, &rp->bdaddr);
 957
 958         return rp->status;
 959 }
 960
 961 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data,
 962                                          struct sk_buff *skb)
 963 {
 964         struct hci_rp_read_local_pairing_opts *rp = data;
 965
 966         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 967
 968         if (rp->status)
 969                 return rp->status;
 970
 971         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 972             hci_dev_test_flag(hdev, HCI_CONFIG)) {
 973                 hdev->pairing_opts = rp->pairing_opts;
 974                 hdev->max_enc_key_size = rp->max_key_size;
 975         }
 976
 977         return rp->status;
 978 }
 979
 980 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data,
 981                                          struct sk_buff *skb)
 982 {
 983         struct hci_rp_read_page_scan_activity *rp = data;
 984
 985         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 986
 987         if (rp->status)
 988                 return rp->status;
 989
 990         if (test_bit(HCI_INIT, &hdev->flags)) {
 991                 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
 992                 hdev->page_scan_window = __le16_to_cpu(rp->window);
 993         }
 994
 995         return rp->status;
 996 }
 997
 998 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data,
 999                                           struct sk_buff *skb)
1000 {
1001         struct hci_ev_status *rp = data;
1002         struct hci_cp_write_page_scan_activity *sent;
1003
1004         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1005
1006         if (rp->status)
1007                 return rp->status;
1008
1009         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
1010         if (!sent)
1011                 return rp->status;
1012
1013         hdev->page_scan_interval = __le16_to_cpu(sent->interval);
1014         hdev->page_scan_window = __le16_to_cpu(sent->window);
1015
1016         return rp->status;
1017 }
1018
1019 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data,
1020                                      struct sk_buff *skb)
1021 {
1022         struct hci_rp_read_page_scan_type *rp = data;
1023
1024         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1025
1026         if (rp->status)
1027                 return rp->status;
1028
1029         if (test_bit(HCI_INIT, &hdev->flags))
1030                 hdev->page_scan_type = rp->type;
1031
1032         return rp->status;
1033 }
1034
1035 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data,
1036                                       struct sk_buff *skb)
1037 {
1038         struct hci_ev_status *rp = data;
1039         u8 *type;
1040
1041         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1042
1043         if (rp->status)
1044                 return rp->status;
1045
1046         type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
1047         if (type)
1048                 hdev->page_scan_type = *type;
1049
1050         return rp->status;
1051 }
1052
1053 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data,
1054                                       struct sk_buff *skb)
1055 {
1056         struct hci_rp_read_data_block_size *rp = data;
1057
1058         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1059
1060         if (rp->status)
1061                 return rp->status;
1062
1063         hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
1064         hdev->block_len = __le16_to_cpu(rp->block_len);
1065         hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
1066
1067         hdev->block_cnt = hdev->num_blocks;
1068
1069         BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
1070                hdev->block_cnt, hdev->block_len);
1071
1072         return rp->status;
1073 }
1074
1075 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data,
1076                             struct sk_buff *skb)
1077 {
1078         struct hci_rp_read_clock *rp = data;
1079         struct hci_cp_read_clock *cp;
1080         struct hci_conn *conn;
1081
1082         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1083
1084         if (rp->status)
1085                 return rp->status;
1086
1087         hci_dev_lock(hdev);
1088
1089         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
1090         if (!cp)
1091                 goto unlock;
1092
1093         if (cp->which == 0x00) {
1094                 hdev->clock = le32_to_cpu(rp->clock);
1095                 goto unlock;
1096         }
1097
1098         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1099         if (conn) {
1100                 conn->clock = le32_to_cpu(rp->clock);
1101                 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
1102         }
1103
1104 unlock:
1105         hci_dev_unlock(hdev);
1106         return rp->status;
1107 }
1108
1109 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data,
1110                                      struct sk_buff *skb)
1111 {
1112         struct hci_rp_read_local_amp_info *rp = data;
1113
1114         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1115
1116         if (rp->status)
1117                 return rp->status;
1118
1119         hdev->amp_status = rp->amp_status;
1120         hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
1121         hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
1122         hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
1123         hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
1124         hdev->amp_type = rp->amp_type;
1125         hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
1126         hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
1127         hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
1128         hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
1129
1130         return rp->status;
1131 }
1132
1133 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data,
1134                                        struct sk_buff *skb)
1135 {
1136         struct hci_rp_read_inq_rsp_tx_power *rp = data;
1137
1138         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1139
1140         if (rp->status)
1141                 return rp->status;
1142
1143         hdev->inq_tx_power = rp->tx_power;
1144
1145         return rp->status;
1146 }
1147
1148 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data,
1149                                              struct sk_buff *skb)
1150 {
1151         struct hci_rp_read_def_err_data_reporting *rp = data;
1152
1153         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1154
1155         if (rp->status)
1156                 return rp->status;
1157
1158         hdev->err_data_reporting = rp->err_data_reporting;
1159
1160         return rp->status;
1161 }
1162
1163 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data,
1164                                               struct sk_buff *skb)
1165 {
1166         struct hci_ev_status *rp = data;
1167         struct hci_cp_write_def_err_data_reporting *cp;
1168
1169         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1170
1171         if (rp->status)
1172                 return rp->status;
1173
1174         cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
1175         if (!cp)
1176                 return rp->status;
1177
1178         hdev->err_data_reporting = cp->err_data_reporting;
1179
1180         return rp->status;
1181 }
1182
1183 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data,
1184                                 struct sk_buff *skb)
1185 {
1186         struct hci_rp_pin_code_reply *rp = data;
1187         struct hci_cp_pin_code_reply *cp;
1188         struct hci_conn *conn;
1189
1190         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1191
1192         hci_dev_lock(hdev);
1193
1194         if (hci_dev_test_flag(hdev, HCI_MGMT))
1195                 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
1196
1197         if (rp->status)
1198                 goto unlock;
1199
1200         cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
1201         if (!cp)
1202                 goto unlock;
1203
1204         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1205         if (conn)
1206                 conn->pin_length = cp->pin_len;
1207
1208 unlock:
1209         hci_dev_unlock(hdev);
1210         return rp->status;
1211 }
1212
1213 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data,
1214                                     struct sk_buff *skb)
1215 {
1216         struct hci_rp_pin_code_neg_reply *rp = data;
1217
1218         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1219
1220         hci_dev_lock(hdev);
1221
1222         if (hci_dev_test_flag(hdev, HCI_MGMT))
1223                 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
1224                                                  rp->status);
1225
1226         hci_dev_unlock(hdev);
1227
1228         return rp->status;
1229 }
1230
1231 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data,
1232                                      struct sk_buff *skb)
1233 {
1234         struct hci_rp_le_read_buffer_size *rp = data;
1235
1236         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1237
1238         if (rp->status)
1239                 return rp->status;
1240
1241         hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
1242         hdev->le_pkts = rp->le_max_pkt;
1243
1244         hdev->le_cnt = hdev->le_pkts;
1245
1246         BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
1247
1248         return rp->status;
1249 }
1250
1251 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data,
1252                                         struct sk_buff *skb)
1253 {
1254         struct hci_rp_le_read_local_features *rp = data;
1255
1256         BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1257
1258         if (rp->status)
1259                 return rp->status;
1260
1261         memcpy(hdev->le_features, rp->features, 8);
1262
1263         return rp->status;
1264 }
1265
1266 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data,
1267                                       struct sk_buff *skb)
1268 {
1269         struct hci_rp_le_read_adv_tx_power *rp = data;
1270
1271         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1272
1273         if (rp->status)
1274                 return rp->status;
1275
1276         hdev->adv_tx_power = rp->tx_power;
1277
1278         return rp->status;
1279 }
1280
1281 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data,
1282                                     struct sk_buff *skb)
1283 {
1284         struct hci_rp_user_confirm_reply *rp = data;
1285
1286         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1287
1288         hci_dev_lock(hdev);
1289
1290         if (hci_dev_test_flag(hdev, HCI_MGMT))
1291                 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
1292                                                  rp->status);
1293
1294         hci_dev_unlock(hdev);
1295
1296         return rp->status;
1297 }
1298
1299 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data,
1300                                         struct sk_buff *skb)
1301 {
1302         struct hci_rp_user_confirm_reply *rp = data;
1303
1304         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1305
1306         hci_dev_lock(hdev);
1307
1308         if (hci_dev_test_flag(hdev, HCI_MGMT))
1309                 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1310                                                      ACL_LINK, 0, rp->status);
1311
1312         hci_dev_unlock(hdev);
1313
1314         return rp->status;
1315 }
1316
1317 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data,
1318                                     struct sk_buff *skb)
1319 {
1320         struct hci_rp_user_confirm_reply *rp = data;
1321
1322         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1323
1324         hci_dev_lock(hdev);
1325
1326         if (hci_dev_test_flag(hdev, HCI_MGMT))
1327                 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1328                                                  0, rp->status);
1329
1330         hci_dev_unlock(hdev);
1331
1332         return rp->status;
1333 }
1334
1335 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data,
1336                                         struct sk_buff *skb)
1337 {
1338         struct hci_rp_user_confirm_reply *rp = data;
1339
1340         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1341
1342         hci_dev_lock(hdev);
1343
1344         if (hci_dev_test_flag(hdev, HCI_MGMT))
1345                 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1346                                                      ACL_LINK, 0, rp->status);
1347
1348         hci_dev_unlock(hdev);
1349
1350         return rp->status;
1351 }
1352
1353 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data,
1354                                      struct sk_buff *skb)
1355 {
1356         struct hci_rp_read_local_oob_data *rp = data;
1357
1358         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1359
1360         return rp->status;
1361 }
1362
1363 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data,
1364                                          struct sk_buff *skb)
1365 {
1366         struct hci_rp_read_local_oob_ext_data *rp = data;
1367
1368         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1369
1370         return rp->status;
1371 }
1372
1373 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data,
1374                                     struct sk_buff *skb)
1375 {
1376         struct hci_ev_status *rp = data;
1377         bdaddr_t *sent;
1378
1379         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1380
1381         if (rp->status)
1382                 return rp->status;
1383
1384         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1385         if (!sent)
1386                 return rp->status;
1387
1388         hci_dev_lock(hdev);
1389
1390         bacpy(&hdev->random_addr, sent);
1391
1392         if (!bacmp(&hdev->rpa, sent)) {
1393                 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
1394                 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired,
1395                                    secs_to_jiffies(hdev->rpa_timeout));
1396         }
1397
1398         hci_dev_unlock(hdev);
1399
1400         return rp->status;
1401 }
1402
1403 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data,
1404                                     struct sk_buff *skb)
1405 {
1406         struct hci_ev_status *rp = data;
1407         struct hci_cp_le_set_default_phy *cp;
1408
1409         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1410
1411         if (rp->status)
1412                 return rp->status;
1413
1414         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1415         if (!cp)
1416                 return rp->status;
1417
1418         hci_dev_lock(hdev);
1419
1420         hdev->le_tx_def_phys = cp->tx_phys;
1421         hdev->le_rx_def_phys = cp->rx_phys;
1422
1423         hci_dev_unlock(hdev);
1424
1425         return rp->status;
1426 }
1427
1428 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data,
1429                                             struct sk_buff *skb)
1430 {
1431         struct hci_ev_status *rp = data;
1432         struct hci_cp_le_set_adv_set_rand_addr *cp;
1433         struct adv_info *adv;
1434
1435         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1436
1437         if (rp->status)
1438                 return rp->status;
1439
1440         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1441         /* Update only in case the adv instance since handle 0x00 shall be using
1442          * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
1443          * non-extended adverting.
1444          */
1445         if (!cp || !cp->handle)
1446                 return rp->status;
1447
1448         hci_dev_lock(hdev);
1449
1450         adv = hci_find_adv_instance(hdev, cp->handle);
1451         if (adv) {
1452                 bacpy(&adv->random_addr, &cp->bdaddr);
1453                 if (!bacmp(&hdev->rpa, &cp->bdaddr)) {
1454                         adv->rpa_expired = false;
1455                         queue_delayed_work(hdev->workqueue,
1456                                            &adv->rpa_expired_cb,
1457                                            secs_to_jiffies(hdev->rpa_timeout));
1458                 }
1459         }
1460
1461         hci_dev_unlock(hdev);
1462
1463         return rp->status;
1464 }
1465
1466 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data,
1467                                    struct sk_buff *skb)
1468 {
1469         struct hci_ev_status *rp = data;
1470         u8 *instance;
1471         int err;
1472
1473         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1474
1475         if (rp->status)
1476                 return rp->status;
1477
1478         instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET);
1479         if (!instance)
1480                 return rp->status;
1481
1482         hci_dev_lock(hdev);
1483
1484         err = hci_remove_adv_instance(hdev, *instance);
1485         if (!err)
1486                 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev,
1487                                          *instance);
1488
1489         hci_dev_unlock(hdev);
1490
1491         return rp->status;
1492 }
1493
1494 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data,
1495                                    struct sk_buff *skb)
1496 {
1497         struct hci_ev_status *rp = data;
1498         struct adv_info *adv, *n;
1499         int err;
1500
1501         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1502
1503         if (rp->status)
1504                 return rp->status;
1505
1506         if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS))
1507                 return rp->status;
1508
1509         hci_dev_lock(hdev);
1510
1511         list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1512                 u8 instance = adv->instance;
1513
1514                 err = hci_remove_adv_instance(hdev, instance);
1515                 if (!err)
1516                         mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd),
1517                                                  hdev, instance);
1518         }
1519
1520         hci_dev_unlock(hdev);
1521
1522         return rp->status;
1523 }
1524
1525 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data,
1526                                         struct sk_buff *skb)
1527 {
1528         struct hci_rp_le_read_transmit_power *rp = data;
1529
1530         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1531
1532         if (rp->status)
1533                 return rp->status;
1534
1535         hdev->min_le_tx_power = rp->min_le_tx_power;
1536         hdev->max_le_tx_power = rp->max_le_tx_power;
1537
1538         return rp->status;
1539 }
1540
1541 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data,
1542                                      struct sk_buff *skb)
1543 {
1544         struct hci_ev_status *rp = data;
1545         struct hci_cp_le_set_privacy_mode *cp;
1546         struct hci_conn_params *params;
1547
1548         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1549
1550         if (rp->status)
1551                 return rp->status;
1552
1553         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE);
1554         if (!cp)
1555                 return rp->status;
1556
1557         hci_dev_lock(hdev);
1558
1559         params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type);
1560         if (params)
1561                 params->privacy_mode = cp->mode;
1562
1563         hci_dev_unlock(hdev);
1564
1565         return rp->status;
1566 }
1567
1568 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data,
1569                                    struct sk_buff *skb)
1570 {
1571         struct hci_ev_status *rp = data;
1572         __u8 *sent;
1573
1574         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1575
1576         if (rp->status)
1577                 return rp->status;
1578
1579         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1580         if (!sent)
1581                 return rp->status;
1582
1583         hci_dev_lock(hdev);
1584
1585         /* If we're doing connection initiation as peripheral. Set a
1586          * timeout in case something goes wrong.
1587          */
1588         if (*sent) {
1589                 struct hci_conn *conn;
1590
1591                 hci_dev_set_flag(hdev, HCI_LE_ADV);
1592
1593                 conn = hci_lookup_le_connect(hdev);
1594                 if (conn)
1595                         queue_delayed_work(hdev->workqueue,
1596                                            &conn->le_conn_timeout,
1597                                            conn->conn_timeout);
1598         } else {
1599                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1600         }
1601
1602         hci_dev_unlock(hdev);
1603
1604         return rp->status;
1605 }
1606
1607 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
1608                                        struct sk_buff *skb)
1609 {
1610         struct hci_cp_le_set_ext_adv_enable *cp;
1611         struct hci_cp_ext_adv_set *set;
1612         struct adv_info *adv = NULL, *n;
1613         struct hci_ev_status *rp = data;
1614
1615         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1616
1617         if (rp->status)
1618                 return rp->status;
1619
1620         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1621         if (!cp)
1622                 return rp->status;
1623
1624         set = (void *)cp->data;
1625
1626         hci_dev_lock(hdev);
1627
1628         if (cp->num_of_sets)
1629                 adv = hci_find_adv_instance(hdev, set->handle);
1630
1631         if (cp->enable) {
1632                 struct hci_conn *conn;
1633
1634                 hci_dev_set_flag(hdev, HCI_LE_ADV);
1635
1636                 if (adv)
1637                         adv->enabled = true;
1638
1639                 conn = hci_lookup_le_connect(hdev);
1640                 if (conn)
1641                         queue_delayed_work(hdev->workqueue,
1642                                            &conn->le_conn_timeout,
1643                                            conn->conn_timeout);
1644         } else {
1645                 if (cp->num_of_sets) {
1646                         if (adv)
1647                                 adv->enabled = false;
1648
1649                         /* If just one instance was disabled check if there are
1650                          * any other instance enabled before clearing HCI_LE_ADV
1651                          */
1652                         list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1653                                                  list) {
1654                                 if (adv->enabled)
1655                                         goto unlock;
1656                         }
1657                 } else {
1658                         /* All instances shall be considered disabled */
1659                         list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1660                                                  list)
1661                                 adv->enabled = false;
1662                 }
1663
1664                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1665         }
1666
1667 unlock:
1668         hci_dev_unlock(hdev);
1669         return rp->status;
1670 }
1671
1672 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data,
1673                                    struct sk_buff *skb)
1674 {
1675         struct hci_cp_le_set_scan_param *cp;
1676         struct hci_ev_status *rp = data;
1677
1678         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1679
1680         if (rp->status)
1681                 return rp->status;
1682
1683         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1684         if (!cp)
1685                 return rp->status;
1686
1687         hci_dev_lock(hdev);
1688
1689         hdev->le_scan_type = cp->type;
1690
1691         hci_dev_unlock(hdev);
1692
1693         return rp->status;
1694 }
1695
1696 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data,
1697                                        struct sk_buff *skb)
1698 {
1699         struct hci_cp_le_set_ext_scan_params *cp;
1700         struct hci_ev_status *rp = data;
1701         struct hci_cp_le_scan_phy_params *phy_param;
1702
1703         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1704
1705         if (rp->status)
1706                 return rp->status;
1707
1708         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1709         if (!cp)
1710                 return rp->status;
1711
1712         phy_param = (void *)cp->data;
1713
1714         hci_dev_lock(hdev);
1715
1716         hdev->le_scan_type = phy_param->type;
1717
1718         hci_dev_unlock(hdev);
1719
1720         return rp->status;
1721 }
1722
1723 static bool has_pending_adv_report(struct hci_dev *hdev)
1724 {
1725         struct discovery_state *d = &hdev->discovery;
1726
1727         return bacmp(&d->last_adv_addr, BDADDR_ANY);
1728 }
1729
1730 static void clear_pending_adv_report(struct hci_dev *hdev)
1731 {
1732         struct discovery_state *d = &hdev->discovery;
1733
1734         bacpy(&d->last_adv_addr, BDADDR_ANY);
1735         d->last_adv_data_len = 0;
1736 }
1737
1738 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1739                                      u8 bdaddr_type, s8 rssi, u32 flags,
1740                                      u8 *data, u8 len)
1741 {
1742         struct discovery_state *d = &hdev->discovery;
1743
1744         if (len > HCI_MAX_AD_LENGTH)
1745                 return;
1746
1747         bacpy(&d->last_adv_addr, bdaddr);
1748         d->last_adv_addr_type = bdaddr_type;
1749         d->last_adv_rssi = rssi;
1750         d->last_adv_flags = flags;
1751         memcpy(d->last_adv_data, data, len);
1752         d->last_adv_data_len = len;
1753 }
1754
1755 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1756 {
1757         hci_dev_lock(hdev);
1758
1759         switch (enable) {
1760         case LE_SCAN_ENABLE:
1761                 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1762                 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1763                         clear_pending_adv_report(hdev);
1764                 if (hci_dev_test_flag(hdev, HCI_MESH))
1765                         hci_discovery_set_state(hdev, DISCOVERY_FINDING);
1766                 break;
1767
1768         case LE_SCAN_DISABLE:
1769                 /* We do this here instead of when setting DISCOVERY_STOPPED
1770                  * since the latter would potentially require waiting for
1771                  * inquiry to stop too.
1772                  */
1773                 if (has_pending_adv_report(hdev)) {
1774                         struct discovery_state *d = &hdev->discovery;
1775
1776                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1777                                           d->last_adv_addr_type, NULL,
1778                                           d->last_adv_rssi, d->last_adv_flags,
1779                                           d->last_adv_data,
1780                                           d->last_adv_data_len, NULL, 0, 0);
1781                 }
1782
1783                 /* Cancel this timer so that we don't try to disable scanning
1784                  * when it's already disabled.
1785                  */
1786                 cancel_delayed_work(&hdev->le_scan_disable);
1787
1788                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1789
1790                 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1791                  * interrupted scanning due to a connect request. Mark
1792                  * therefore discovery as stopped.
1793                  */
1794                 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1795 #ifndef TIZEN_BT /* The below line is kernel bug. */
1796                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1797 #else
1798                         hci_le_discovery_set_state(hdev, DISCOVERY_STOPPED);
1799 #endif
1800                 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1801                          hdev->discovery.state == DISCOVERY_FINDING)
1802                         queue_work(hdev->workqueue, &hdev->reenable_adv_work);
1803
1804                 break;
1805
1806         default:
1807                 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1808                            enable);
1809                 break;
1810         }
1811
1812         hci_dev_unlock(hdev);
1813 }
1814
1815 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1816                                     struct sk_buff *skb)
1817 {
1818         struct hci_cp_le_set_scan_enable *cp;
1819         struct hci_ev_status *rp = data;
1820
1821         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1822
1823         if (rp->status)
1824                 return rp->status;
1825
1826         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1827         if (!cp)
1828                 return rp->status;
1829
1830         le_set_scan_enable_complete(hdev, cp->enable);
1831
1832         return rp->status;
1833 }
1834
1835 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1836                                         struct sk_buff *skb)
1837 {
1838         struct hci_cp_le_set_ext_scan_enable *cp;
1839         struct hci_ev_status *rp = data;
1840
1841         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1842
1843         if (rp->status)
1844                 return rp->status;
1845
1846         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1847         if (!cp)
1848                 return rp->status;
1849
1850         le_set_scan_enable_complete(hdev, cp->enable);
1851
1852         return rp->status;
1853 }
1854
1855 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1856                                       struct sk_buff *skb)
1857 {
1858         struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1859
1860         bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1861                    rp->num_of_sets);
1862
1863         if (rp->status)
1864                 return rp->status;
1865
1866         hdev->le_num_of_adv_sets = rp->num_of_sets;
1867
1868         return rp->status;
1869 }
1870
1871 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1872                                           struct sk_buff *skb)
1873 {
1874         struct hci_rp_le_read_accept_list_size *rp = data;
1875
1876         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1877
1878         if (rp->status)
1879                 return rp->status;
1880
1881         hdev->le_accept_list_size = rp->size;
1882
1883         return rp->status;
1884 }
1885
1886 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1887                                       struct sk_buff *skb)
1888 {
1889         struct hci_ev_status *rp = data;
1890
1891         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1892
1893         if (rp->status)
1894                 return rp->status;
1895
1896         hci_dev_lock(hdev);
1897         hci_bdaddr_list_clear(&hdev->le_accept_list);
1898         hci_dev_unlock(hdev);
1899
1900         return rp->status;
1901 }
1902
1903 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1904                                        struct sk_buff *skb)
1905 {
1906         struct hci_cp_le_add_to_accept_list *sent;
1907         struct hci_ev_status *rp = data;
1908
1909         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1910
1911         if (rp->status)
1912                 return rp->status;
1913
1914         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1915         if (!sent)
1916                 return rp->status;
1917
1918         hci_dev_lock(hdev);
1919         hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
1920                             sent->bdaddr_type);
1921         hci_dev_unlock(hdev);
1922
1923         return rp->status;
1924 }
1925
1926 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1927                                          struct sk_buff *skb)
1928 {
1929         struct hci_cp_le_del_from_accept_list *sent;
1930         struct hci_ev_status *rp = data;
1931
1932         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1933
1934         if (rp->status)
1935                 return rp->status;
1936
1937         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1938         if (!sent)
1939                 return rp->status;
1940
1941         hci_dev_lock(hdev);
1942         hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
1943                             sent->bdaddr_type);
1944         hci_dev_unlock(hdev);
1945
1946         return rp->status;
1947 }
1948
1949 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1950                                           struct sk_buff *skb)
1951 {
1952         struct hci_rp_le_read_supported_states *rp = data;
1953
1954         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1955
1956         if (rp->status)
1957                 return rp->status;
1958
1959         memcpy(hdev->le_states, rp->le_states, 8);
1960
1961         return rp->status;
1962 }
1963
1964 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
1965                                       struct sk_buff *skb)
1966 {
1967         struct hci_rp_le_read_def_data_len *rp = data;
1968
1969         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1970
1971         if (rp->status)
1972                 return rp->status;
1973
1974         hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1975         hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1976
1977         return rp->status;
1978 }
1979
1980 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
1981                                        struct sk_buff *skb)
1982 {
1983         struct hci_cp_le_write_def_data_len *sent;
1984         struct hci_ev_status *rp = data;
1985
1986         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1987
1988         if (rp->status)
1989                 return rp->status;
1990
1991         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1992         if (!sent)
1993                 return rp->status;
1994
1995         hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
1996         hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
1997
1998         return rp->status;
1999 }
2000
2001 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
2002                                        struct sk_buff *skb)
2003 {
2004         struct hci_cp_le_add_to_resolv_list *sent;
2005         struct hci_ev_status *rp = data;
2006
2007         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2008
2009         if (rp->status)
2010                 return rp->status;
2011
2012         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
2013         if (!sent)
2014                 return rp->status;
2015
2016         hci_dev_lock(hdev);
2017         hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2018                                 sent->bdaddr_type, sent->peer_irk,
2019                                 sent->local_irk);
2020         hci_dev_unlock(hdev);
2021
2022         return rp->status;
2023 }
2024
2025 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
2026                                          struct sk_buff *skb)
2027 {
2028         struct hci_cp_le_del_from_resolv_list *sent;
2029         struct hci_ev_status *rp = data;
2030
2031         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2032
2033         if (rp->status)
2034                 return rp->status;
2035
2036         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
2037         if (!sent)
2038                 return rp->status;
2039
2040         hci_dev_lock(hdev);
2041         hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2042                             sent->bdaddr_type);
2043         hci_dev_unlock(hdev);
2044
2045         return rp->status;
2046 }
2047
2048 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2049                                       struct sk_buff *skb)
2050 {
2051         struct hci_ev_status *rp = data;
2052
2053         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2054
2055         if (rp->status)
2056                 return rp->status;
2057
2058         hci_dev_lock(hdev);
2059         hci_bdaddr_list_clear(&hdev->le_resolv_list);
2060         hci_dev_unlock(hdev);
2061
2062         return rp->status;
2063 }
2064
2065 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2066                                           struct sk_buff *skb)
2067 {
2068         struct hci_rp_le_read_resolv_list_size *rp = data;
2069
2070         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2071
2072         if (rp->status)
2073                 return rp->status;
2074
2075         hdev->le_resolv_list_size = rp->size;
2076
2077         return rp->status;
2078 }
2079
2080 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2081                                                struct sk_buff *skb)
2082 {
2083         struct hci_ev_status *rp = data;
2084         __u8 *sent;
2085
2086         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2087
2088         if (rp->status)
2089                 return rp->status;
2090
2091         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2092         if (!sent)
2093                 return rp->status;
2094
2095         hci_dev_lock(hdev);
2096
2097         if (*sent)
2098                 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2099         else
2100                 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2101
2102         hci_dev_unlock(hdev);
2103
2104         return rp->status;
2105 }
2106
2107 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2108                                       struct sk_buff *skb)
2109 {
2110         struct hci_rp_le_read_max_data_len *rp = data;
2111
2112         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2113
2114         if (rp->status)
2115                 return rp->status;
2116
2117         hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2118         hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2119         hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2120         hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2121
2122         return rp->status;
2123 }
2124
2125 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2126                                          struct sk_buff *skb)
2127 {
2128         struct hci_cp_write_le_host_supported *sent;
2129         struct hci_ev_status *rp = data;
2130
2131         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2132
2133         if (rp->status)
2134                 return rp->status;
2135
2136         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2137         if (!sent)
2138                 return rp->status;
2139
2140         hci_dev_lock(hdev);
2141
2142         if (sent->le) {
2143                 hdev->features[1][0] |= LMP_HOST_LE;
2144                 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2145         } else {
2146                 hdev->features[1][0] &= ~LMP_HOST_LE;
2147                 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2148                 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2149         }
2150
2151         if (sent->simul)
2152                 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2153         else
2154                 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2155
2156         hci_dev_unlock(hdev);
2157
2158         return rp->status;
2159 }
2160
2161 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2162                                struct sk_buff *skb)
2163 {
2164         struct hci_cp_le_set_adv_param *cp;
2165         struct hci_ev_status *rp = data;
2166
2167         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2168
2169         if (rp->status)
2170                 return rp->status;
2171
2172         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2173         if (!cp)
2174                 return rp->status;
2175
2176         hci_dev_lock(hdev);
2177         hdev->adv_addr_type = cp->own_address_type;
2178         hci_dev_unlock(hdev);
2179
2180         return rp->status;
2181 }
2182
2183 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2184                                    struct sk_buff *skb)
2185 {
2186         struct hci_rp_le_set_ext_adv_params *rp = data;
2187         struct hci_cp_le_set_ext_adv_params *cp;
2188         struct adv_info *adv_instance;
2189
2190         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2191
2192         if (rp->status)
2193                 return rp->status;
2194
2195         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2196         if (!cp)
2197                 return rp->status;
2198
2199         hci_dev_lock(hdev);
2200         hdev->adv_addr_type = cp->own_addr_type;
2201         if (!cp->handle) {
2202                 /* Store in hdev for instance 0 */
2203                 hdev->adv_tx_power = rp->tx_power;
2204         } else {
2205                 adv_instance = hci_find_adv_instance(hdev, cp->handle);
2206                 if (adv_instance)
2207                         adv_instance->tx_power = rp->tx_power;
2208         }
2209         /* Update adv data as tx power is known now */
2210         hci_update_adv_data(hdev, cp->handle);
2211
2212         hci_dev_unlock(hdev);
2213
2214         return rp->status;
2215 }
2216
2217 #ifdef TIZEN_BT
2218 static u8 hci_cc_enable_rssi(struct hci_dev *hdev, void *data,
2219                              struct sk_buff *skb)
2220 {
2221         struct hci_cc_rsp_enable_rssi *rp = data;
2222
2223         BT_DBG("hci_cc_enable_rssi - %s status 0x%2.2x Event_LE_ext_Opcode 0x%2.2x",
2224                hdev->name, rp->status, rp->le_ext_opcode);
2225
2226         mgmt_enable_rssi_cc(hdev, rp, rp->status);
2227
2228         return rp->status;
2229 }
2230
2231 static u8 hci_cc_get_raw_rssi(struct hci_dev *hdev, void *data,
2232                               struct sk_buff *skb)
2233 {
2234         struct hci_cc_rp_get_raw_rssi *rp = data;
2235
2236         BT_DBG("hci_cc_get_raw_rssi- %s Get Raw Rssi Response[%2.2x %4.4x %2.2X]",
2237                hdev->name, rp->status, rp->conn_handle, rp->rssi_dbm);
2238
2239         mgmt_raw_rssi_response(hdev, rp, rp->status);
2240
2241         return rp->status;
2242 }
2243
2244 static void hci_vendor_ext_rssi_link_alert_evt(struct hci_dev *hdev,
2245                                                struct sk_buff *skb)
2246 {
2247         struct hci_ev_vendor_specific_rssi_alert *ev = (void *)skb->data;
2248
2249         BT_DBG("RSSI event LE_RSSI_LINK_ALERT %X", LE_RSSI_LINK_ALERT);
2250
2251         mgmt_rssi_alert_evt(hdev, ev->conn_handle, ev->alert_type,
2252                             ev->rssi_dbm);
2253 }
2254
2255 static void hci_vendor_specific_group_ext_evt(struct hci_dev *hdev,
2256                                               struct sk_buff *skb)
2257 {
2258         struct hci_ev_ext_vendor_specific *ev = (void *)skb->data;
2259         __u8 event_le_ext_sub_code;
2260
2261         BT_DBG("RSSI event LE_META_VENDOR_SPECIFIC_GROUP_EVENT: %X",
2262                LE_META_VENDOR_SPECIFIC_GROUP_EVENT);
2263
2264         skb_pull(skb, sizeof(*ev));
2265         event_le_ext_sub_code = ev->event_le_ext_sub_code;
2266
2267         switch (event_le_ext_sub_code) {
2268         case LE_RSSI_LINK_ALERT:
2269                 hci_vendor_ext_rssi_link_alert_evt(hdev, skb);
2270                 break;
2271
2272         default:
2273                 break;
2274         }
2275 }
2276
2277 static void hci_vendor_specific_evt(struct hci_dev *hdev, void *data,
2278                                     struct sk_buff *skb)
2279 {
2280         struct hci_ev_vendor_specific *ev = (void *)skb->data;
2281         __u8 event_sub_code;
2282
2283         BT_DBG("hci_vendor_specific_evt");
2284
2285         skb_pull(skb, sizeof(*ev));
2286         event_sub_code = ev->event_sub_code;
2287
2288         switch (event_sub_code) {
2289         case LE_META_VENDOR_SPECIFIC_GROUP_EVENT:
2290                 hci_vendor_specific_group_ext_evt(hdev, skb);
2291                 break;
2292
2293         default:
2294                 break;
2295         }
2296 }
2297 #endif
2298
2299 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2300                            struct sk_buff *skb)
2301 {
2302         struct hci_rp_read_rssi *rp = data;
2303         struct hci_conn *conn;
2304
2305         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2306
2307         if (rp->status)
2308                 return rp->status;
2309
2310         hci_dev_lock(hdev);
2311
2312         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2313         if (conn)
2314                 conn->rssi = rp->rssi;
2315
2316         hci_dev_unlock(hdev);
2317
2318         return rp->status;
2319 }
2320
2321 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2322                                struct sk_buff *skb)
2323 {
2324         struct hci_cp_read_tx_power *sent;
2325         struct hci_rp_read_tx_power *rp = data;
2326         struct hci_conn *conn;
2327
2328         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2329
2330         if (rp->status)
2331                 return rp->status;
2332
2333         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2334         if (!sent)
2335                 return rp->status;
2336
2337         hci_dev_lock(hdev);
2338
2339         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2340         if (!conn)
2341                 goto unlock;
2342
2343         switch (sent->type) {
2344         case 0x00:
2345                 conn->tx_power = rp->tx_power;
2346                 break;
2347         case 0x01:
2348                 conn->max_tx_power = rp->tx_power;
2349                 break;
2350         }
2351
2352 unlock:
2353         hci_dev_unlock(hdev);
2354         return rp->status;
2355 }
2356
2357 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2358                                       struct sk_buff *skb)
2359 {
2360         struct hci_ev_status *rp = data;
2361         u8 *mode;
2362
2363         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2364
2365         if (rp->status)
2366                 return rp->status;
2367
2368         mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2369         if (mode)
2370                 hdev->ssp_debug_mode = *mode;
2371
2372         return rp->status;
2373 }
2374
2375 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2376 {
2377         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2378
2379         if (status) {
2380                 hci_conn_check_pending(hdev);
2381                 return;
2382         }
2383
2384         set_bit(HCI_INQUIRY, &hdev->flags);
2385 }
2386
2387 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2388 {
2389         struct hci_cp_create_conn *cp;
2390         struct hci_conn *conn;
2391
2392         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2393
2394         cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2395         if (!cp)
2396                 return;
2397
2398         hci_dev_lock(hdev);
2399
2400         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2401
2402         bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2403
2404         if (status) {
2405                 if (conn && conn->state == BT_CONNECT) {
2406                         if (status != 0x0c || conn->attempt > 2) {
2407                                 conn->state = BT_CLOSED;
2408                                 hci_connect_cfm(conn, status);
2409                                 hci_conn_del(conn);
2410                         } else
2411                                 conn->state = BT_CONNECT2;
2412                 }
2413         } else {
2414                 if (!conn) {
2415                         conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
2416                                             HCI_ROLE_MASTER);
2417                         if (!conn)
2418                                 bt_dev_err(hdev, "no memory for new connection");
2419                 }
2420         }
2421
2422         hci_dev_unlock(hdev);
2423 }
2424
2425 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2426 {
2427         struct hci_cp_add_sco *cp;
2428         struct hci_conn *acl, *sco;
2429         __u16 handle;
2430
2431         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2432
2433         if (!status)
2434                 return;
2435
2436         cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2437         if (!cp)
2438                 return;
2439
2440         handle = __le16_to_cpu(cp->handle);
2441
2442         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2443
2444         hci_dev_lock(hdev);
2445
2446         acl = hci_conn_hash_lookup_handle(hdev, handle);
2447         if (acl) {
2448                 sco = acl->link;
2449                 if (sco) {
2450                         sco->state = BT_CLOSED;
2451
2452                         hci_connect_cfm(sco, status);
2453                         hci_conn_del(sco);
2454                 }
2455         }
2456
2457         hci_dev_unlock(hdev);
2458 }
2459
2460 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2461 {
2462         struct hci_cp_auth_requested *cp;
2463         struct hci_conn *conn;
2464
2465         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2466
2467         if (!status)
2468                 return;
2469
2470         cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2471         if (!cp)
2472                 return;
2473
2474         hci_dev_lock(hdev);
2475
2476         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2477         if (conn) {
2478                 if (conn->state == BT_CONFIG) {
2479                         hci_connect_cfm(conn, status);
2480                         hci_conn_drop(conn);
2481                 }
2482         }
2483
2484         hci_dev_unlock(hdev);
2485 }
2486
2487 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2488 {
2489         struct hci_cp_set_conn_encrypt *cp;
2490         struct hci_conn *conn;
2491
2492         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2493
2494         if (!status)
2495                 return;
2496
2497         cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2498         if (!cp)
2499                 return;
2500
2501         hci_dev_lock(hdev);
2502
2503         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2504         if (conn) {
2505                 if (conn->state == BT_CONFIG) {
2506                         hci_connect_cfm(conn, status);
2507                         hci_conn_drop(conn);
2508                 }
2509         }
2510
2511         hci_dev_unlock(hdev);
2512 }
2513
2514 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2515                                     struct hci_conn *conn)
2516 {
2517         if (conn->state != BT_CONFIG || !conn->out)
2518                 return 0;
2519
2520         if (conn->pending_sec_level == BT_SECURITY_SDP)
2521                 return 0;
2522
2523         /* Only request authentication for SSP connections or non-SSP
2524          * devices with sec_level MEDIUM or HIGH or if MITM protection
2525          * is requested.
2526          */
2527         if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2528             conn->pending_sec_level != BT_SECURITY_FIPS &&
2529             conn->pending_sec_level != BT_SECURITY_HIGH &&
2530             conn->pending_sec_level != BT_SECURITY_MEDIUM)
2531                 return 0;
2532
2533         return 1;
2534 }
2535
2536 static int hci_resolve_name(struct hci_dev *hdev,
2537                                    struct inquiry_entry *e)
2538 {
2539         struct hci_cp_remote_name_req cp;
2540
2541         memset(&cp, 0, sizeof(cp));
2542
2543         bacpy(&cp.bdaddr, &e->data.bdaddr);
2544         cp.pscan_rep_mode = e->data.pscan_rep_mode;
2545         cp.pscan_mode = e->data.pscan_mode;
2546         cp.clock_offset = e->data.clock_offset;
2547
2548         return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2549 }
2550
2551 static bool hci_resolve_next_name(struct hci_dev *hdev)
2552 {
2553         struct discovery_state *discov = &hdev->discovery;
2554         struct inquiry_entry *e;
2555
2556         if (list_empty(&discov->resolve))
2557                 return false;
2558
2559         /* We should stop if we already spent too much time resolving names. */
2560         if (time_after(jiffies, discov->name_resolve_timeout)) {
2561                 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2562                 return false;
2563         }
2564
2565         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2566         if (!e)
2567                 return false;
2568
2569         if (hci_resolve_name(hdev, e) == 0) {
2570                 e->name_state = NAME_PENDING;
2571                 return true;
2572         }
2573
2574         return false;
2575 }
2576
2577 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2578                                    bdaddr_t *bdaddr, u8 *name, u8 name_len)
2579 {
2580         struct discovery_state *discov = &hdev->discovery;
2581         struct inquiry_entry *e;
2582
2583 #ifdef TIZEN_BT
2584         /* Update the mgmt connected state if necessary. Be careful with
2585          * conn objects that exist but are not (yet) connected however.
2586          * Only those in BT_CONFIG or BT_CONNECTED states can be
2587          * considered connected.
2588          */
2589         if (conn &&
2590             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) {
2591                 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2592                         mgmt_device_connected(hdev, conn, 0, name, name_len);
2593                 else
2594                         mgmt_device_name_update(hdev, bdaddr, name, name_len);
2595         }
2596 #else
2597         if (conn &&
2598             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2599             !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2600                 mgmt_device_connected(hdev, conn, name, name_len);
2601 #endif
2602
2603         if (discov->state == DISCOVERY_STOPPED)
2604                 return;
2605
2606         if (discov->state == DISCOVERY_STOPPING)
2607                 goto discov_complete;
2608
2609         if (discov->state != DISCOVERY_RESOLVING)
2610                 return;
2611
2612         e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2613         /* If the device was not found in a list of found devices names of which
2614          * are pending. there is no need to continue resolving a next name as it
2615          * will be done upon receiving another Remote Name Request Complete
2616          * Event */
2617         if (!e)
2618                 return;
2619
2620         list_del(&e->list);
2621
2622         e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2623         mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2624                          name, name_len);
2625
2626         if (hci_resolve_next_name(hdev))
2627                 return;
2628
2629 discov_complete:
2630         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2631 }
2632
2633 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2634 {
2635         struct hci_cp_remote_name_req *cp;
2636         struct hci_conn *conn;
2637
2638         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2639
2640         /* If successful wait for the name req complete event before
2641          * checking for the need to do authentication */
2642         if (!status)
2643                 return;
2644
2645         cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2646         if (!cp)
2647                 return;
2648
2649         hci_dev_lock(hdev);
2650
2651         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2652
2653         if (hci_dev_test_flag(hdev, HCI_MGMT))
2654                 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2655
2656         if (!conn)
2657                 goto unlock;
2658
2659         if (!hci_outgoing_auth_needed(hdev, conn))
2660                 goto unlock;
2661
2662         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2663                 struct hci_cp_auth_requested auth_cp;
2664
2665                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2666
2667                 auth_cp.handle = __cpu_to_le16(conn->handle);
2668                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2669                              sizeof(auth_cp), &auth_cp);
2670         }
2671
2672 unlock:
2673         hci_dev_unlock(hdev);
2674 }
2675
2676 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2677 {
2678         struct hci_cp_read_remote_features *cp;
2679         struct hci_conn *conn;
2680
2681         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2682
2683         if (!status)
2684                 return;
2685
2686         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2687         if (!cp)
2688                 return;
2689
2690         hci_dev_lock(hdev);
2691
2692         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2693         if (conn) {
2694                 if (conn->state == BT_CONFIG) {
2695                         hci_connect_cfm(conn, status);
2696                         hci_conn_drop(conn);
2697                 }
2698         }
2699
2700         hci_dev_unlock(hdev);
2701 }
2702
2703 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2704 {
2705         struct hci_cp_read_remote_ext_features *cp;
2706         struct hci_conn *conn;
2707
2708         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2709
2710         if (!status)
2711                 return;
2712
2713         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2714         if (!cp)
2715                 return;
2716
2717         hci_dev_lock(hdev);
2718
2719         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2720         if (conn) {
2721                 if (conn->state == BT_CONFIG) {
2722                         hci_connect_cfm(conn, status);
2723                         hci_conn_drop(conn);
2724                 }
2725         }
2726
2727         hci_dev_unlock(hdev);
2728 }
2729
2730 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2731 {
2732         struct hci_cp_setup_sync_conn *cp;
2733         struct hci_conn *acl, *sco;
2734         __u16 handle;
2735
2736         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2737
2738         if (!status)
2739                 return;
2740
2741         cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2742         if (!cp)
2743                 return;
2744
2745         handle = __le16_to_cpu(cp->handle);
2746
2747         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2748
2749         hci_dev_lock(hdev);
2750
2751         acl = hci_conn_hash_lookup_handle(hdev, handle);
2752         if (acl) {
2753                 sco = acl->link;
2754                 if (sco) {
2755                         sco->state = BT_CLOSED;
2756
2757                         hci_connect_cfm(sco, status);
2758                         hci_conn_del(sco);
2759                 }
2760         }
2761
2762         hci_dev_unlock(hdev);
2763 }
2764
2765 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2766 {
2767         struct hci_cp_enhanced_setup_sync_conn *cp;
2768         struct hci_conn *acl, *sco;
2769         __u16 handle;
2770
2771         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2772
2773         if (!status)
2774                 return;
2775
2776         cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2777         if (!cp)
2778                 return;
2779
2780         handle = __le16_to_cpu(cp->handle);
2781
2782         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2783
2784         hci_dev_lock(hdev);
2785
2786         acl = hci_conn_hash_lookup_handle(hdev, handle);
2787         if (acl) {
2788                 sco = acl->link;
2789                 if (sco) {
2790                         sco->state = BT_CLOSED;
2791
2792                         hci_connect_cfm(sco, status);
2793                         hci_conn_del(sco);
2794                 }
2795         }
2796
2797         hci_dev_unlock(hdev);
2798 }
2799
2800 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2801 {
2802         struct hci_cp_sniff_mode *cp;
2803         struct hci_conn *conn;
2804
2805         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2806
2807         if (!status)
2808                 return;
2809
2810         cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2811         if (!cp)
2812                 return;
2813
2814         hci_dev_lock(hdev);
2815
2816         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2817         if (conn) {
2818                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2819
2820                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2821                         hci_sco_setup(conn, status);
2822         }
2823
2824         hci_dev_unlock(hdev);
2825 }
2826
2827 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2828 {
2829         struct hci_cp_exit_sniff_mode *cp;
2830         struct hci_conn *conn;
2831
2832         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2833
2834         if (!status)
2835                 return;
2836
2837         cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2838         if (!cp)
2839                 return;
2840
2841         hci_dev_lock(hdev);
2842
2843         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2844         if (conn) {
2845                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2846
2847                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2848                         hci_sco_setup(conn, status);
2849         }
2850
2851         hci_dev_unlock(hdev);
2852 }
2853
2854 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2855 {
2856         struct hci_cp_disconnect *cp;
2857         struct hci_conn_params *params;
2858         struct hci_conn *conn;
2859         bool mgmt_conn;
2860
2861         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2862
2863         /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2864          * otherwise cleanup the connection immediately.
2865          */
2866         if (!status && !hdev->suspended)
2867                 return;
2868
2869         cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2870         if (!cp)
2871                 return;
2872
2873         hci_dev_lock(hdev);
2874
2875         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2876         if (!conn)
2877                 goto unlock;
2878
2879         if (status) {
2880                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2881                                        conn->dst_type, status);
2882
2883                 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2884                         hdev->cur_adv_instance = conn->adv_instance;
2885                         hci_enable_advertising(hdev);
2886                 }
2887
2888                 goto done;
2889         }
2890
2891         mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2892
2893         if (conn->type == ACL_LINK) {
2894                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2895                         hci_remove_link_key(hdev, &conn->dst);
2896         }
2897
2898         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2899         if (params) {
2900                 switch (params->auto_connect) {
2901                 case HCI_AUTO_CONN_LINK_LOSS:
2902                         if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2903                                 break;
2904                         fallthrough;
2905
2906                 case HCI_AUTO_CONN_DIRECT:
2907                 case HCI_AUTO_CONN_ALWAYS:
2908                         list_del_init(&params->action);
2909                         list_add(&params->action, &hdev->pend_le_conns);
2910                         break;
2911
2912                 default:
2913                         break;
2914                 }
2915         }
2916
2917         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2918                                  cp->reason, mgmt_conn);
2919
2920         hci_disconn_cfm(conn, cp->reason);
2921
2922 done:
2923         /* If the disconnection failed for any reason, the upper layer
2924          * does not retry to disconnect in current implementation.
2925          * Hence, we need to do some basic cleanup here and re-enable
2926          * advertising if necessary.
2927          */
2928         hci_conn_del(conn);
2929 unlock:
2930         hci_dev_unlock(hdev);
2931 }
2932
2933 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
2934 {
2935         /* When using controller based address resolution, then the new
2936          * address types 0x02 and 0x03 are used. These types need to be
2937          * converted back into either public address or random address type
2938          */
2939         switch (type) {
2940         case ADDR_LE_DEV_PUBLIC_RESOLVED:
2941                 if (resolved)
2942                         *resolved = true;
2943                 return ADDR_LE_DEV_PUBLIC;
2944         case ADDR_LE_DEV_RANDOM_RESOLVED:
2945                 if (resolved)
2946                         *resolved = true;
2947                 return ADDR_LE_DEV_RANDOM;
2948         }
2949
2950         if (resolved)
2951                 *resolved = false;
2952         return type;
2953 }
2954
2955 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2956                               u8 peer_addr_type, u8 own_address_type,
2957                               u8 filter_policy)
2958 {
2959         struct hci_conn *conn;
2960
2961         conn = hci_conn_hash_lookup_le(hdev, peer_addr,
2962                                        peer_addr_type);
2963         if (!conn)
2964                 return;
2965
2966         own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
2967
2968         /* Store the initiator and responder address information which
2969          * is needed for SMP. These values will not change during the
2970          * lifetime of the connection.
2971          */
2972         conn->init_addr_type = own_address_type;
2973         if (own_address_type == ADDR_LE_DEV_RANDOM)
2974                 bacpy(&conn->init_addr, &hdev->random_addr);
2975         else
2976                 bacpy(&conn->init_addr, &hdev->bdaddr);
2977
2978         conn->resp_addr_type = peer_addr_type;
2979         bacpy(&conn->resp_addr, peer_addr);
2980 }
2981
2982 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2983 {
2984         struct hci_cp_le_create_conn *cp;
2985
2986         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2987
2988         /* All connection failure handling is taken care of by the
2989          * hci_conn_failed function which is triggered by the HCI
2990          * request completion callbacks used for connecting.
2991          */
2992         if (status)
2993                 return;
2994
2995         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
2996         if (!cp)
2997                 return;
2998
2999         hci_dev_lock(hdev);
3000
3001         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
3002                           cp->own_address_type, cp->filter_policy);
3003
3004         hci_dev_unlock(hdev);
3005 }
3006
3007 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
3008 {
3009         struct hci_cp_le_ext_create_conn *cp;
3010
3011         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3012
3013         /* All connection failure handling is taken care of by the
3014          * hci_conn_failed function which is triggered by the HCI
3015          * request completion callbacks used for connecting.
3016          */
3017         if (status)
3018                 return;
3019
3020         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
3021         if (!cp)
3022                 return;
3023
3024         hci_dev_lock(hdev);
3025
3026         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
3027                           cp->own_addr_type, cp->filter_policy);
3028
3029         hci_dev_unlock(hdev);
3030 }
3031
3032 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
3033 {
3034         struct hci_cp_le_read_remote_features *cp;
3035         struct hci_conn *conn;
3036
3037         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3038
3039         if (!status)
3040                 return;
3041
3042         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
3043         if (!cp)
3044                 return;
3045
3046         hci_dev_lock(hdev);
3047
3048         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3049         if (conn) {
3050                 if (conn->state == BT_CONFIG) {
3051                         hci_connect_cfm(conn, status);
3052                         hci_conn_drop(conn);
3053                 }
3054         }
3055
3056         hci_dev_unlock(hdev);
3057 }
3058
3059 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
3060 {
3061         struct hci_cp_le_start_enc *cp;
3062         struct hci_conn *conn;
3063
3064         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3065
3066         if (!status)
3067                 return;
3068
3069         hci_dev_lock(hdev);
3070
3071         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
3072         if (!cp)
3073                 goto unlock;
3074
3075         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3076         if (!conn)
3077                 goto unlock;
3078
3079         if (conn->state != BT_CONNECTED)
3080                 goto unlock;
3081
3082         hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3083         hci_conn_drop(conn);
3084
3085 unlock:
3086         hci_dev_unlock(hdev);
3087 }
3088
3089 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
3090 {
3091         struct hci_cp_switch_role *cp;
3092         struct hci_conn *conn;
3093
3094         BT_DBG("%s status 0x%2.2x", hdev->name, status);
3095
3096         if (!status)
3097                 return;
3098
3099         cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3100         if (!cp)
3101                 return;
3102
3103         hci_dev_lock(hdev);
3104
3105         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3106         if (conn)
3107                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3108
3109         hci_dev_unlock(hdev);
3110 }
3111
3112 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3113                                      struct sk_buff *skb)
3114 {
3115         struct hci_ev_status *ev = data;
3116         struct discovery_state *discov = &hdev->discovery;
3117         struct inquiry_entry *e;
3118
3119         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3120
3121         hci_conn_check_pending(hdev);
3122
3123         if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3124                 return;
3125
3126         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3127         wake_up_bit(&hdev->flags, HCI_INQUIRY);
3128
3129         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3130                 return;
3131
3132         hci_dev_lock(hdev);
3133
3134         if (discov->state != DISCOVERY_FINDING)
3135                 goto unlock;
3136
3137         if (list_empty(&discov->resolve)) {
3138                 /* When BR/EDR inquiry is active and no LE scanning is in
3139                  * progress, then change discovery state to indicate completion.
3140                  *
3141                  * When running LE scanning and BR/EDR inquiry simultaneously
3142                  * and the LE scan already finished, then change the discovery
3143                  * state to indicate completion.
3144                  */
3145                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3146                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3147                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3148                 goto unlock;
3149         }
3150
3151         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3152         if (e && hci_resolve_name(hdev, e) == 0) {
3153                 e->name_state = NAME_PENDING;
3154                 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3155                 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3156         } else {
3157                 /* When BR/EDR inquiry is active and no LE scanning is in
3158                  * progress, then change discovery state to indicate completion.
3159                  *
3160                  * When running LE scanning and BR/EDR inquiry simultaneously
3161                  * and the LE scan already finished, then change the discovery
3162                  * state to indicate completion.
3163                  */
3164                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3165                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3166                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3167         }
3168
3169 unlock:
3170         hci_dev_unlock(hdev);
3171 }
3172
3173 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3174                                    struct sk_buff *skb)
3175 {
3176         struct hci_ev_inquiry_result *ev = edata;
3177         struct inquiry_data data;
3178         int i;
3179
3180         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3181                              flex_array_size(ev, info, ev->num)))
3182                 return;
3183
3184         bt_dev_dbg(hdev, "num %d", ev->num);
3185
3186         if (!ev->num)
3187                 return;
3188
3189         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3190                 return;
3191
3192         hci_dev_lock(hdev);
3193
3194         for (i = 0; i < ev->num; i++) {
3195                 struct inquiry_info *info = &ev->info[i];
3196                 u32 flags;
3197
3198                 bacpy(&data.bdaddr, &info->bdaddr);
3199                 data.pscan_rep_mode     = info->pscan_rep_mode;
3200                 data.pscan_period_mode  = info->pscan_period_mode;
3201                 data.pscan_mode         = info->pscan_mode;
3202                 memcpy(data.dev_class, info->dev_class, 3);
3203                 data.clock_offset       = info->clock_offset;
3204                 data.rssi               = HCI_RSSI_INVALID;
3205                 data.ssp_mode           = 0x00;
3206
3207                 flags = hci_inquiry_cache_update(hdev, &data, false);
3208
3209                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3210                                   info->dev_class, HCI_RSSI_INVALID,
3211                                   flags, NULL, 0, NULL, 0, 0);
3212         }
3213
3214         hci_dev_unlock(hdev);
3215 }
3216
3217 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3218                                   struct sk_buff *skb)
3219 {
3220         struct hci_ev_conn_complete *ev = data;
3221         struct hci_conn *conn;
3222         u8 status = ev->status;
3223
3224         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3225
3226         hci_dev_lock(hdev);
3227
3228         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3229         if (!conn) {
3230                 /* In case of error status and there is no connection pending
3231                  * just unlock as there is nothing to cleanup.
3232                  */
3233                 if (ev->status)
3234                         goto unlock;
3235
3236                 /* Connection may not exist if auto-connected. Check the bredr
3237                  * allowlist to see if this device is allowed to auto connect.
3238                  * If link is an ACL type, create a connection class
3239                  * automatically.
3240                  *
3241                  * Auto-connect will only occur if the event filter is
3242                  * programmed with a given address. Right now, event filter is
3243                  * only used during suspend.
3244                  */
3245                 if (ev->link_type == ACL_LINK &&
3246                     hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3247                                                       &ev->bdaddr,
3248                                                       BDADDR_BREDR)) {
3249                         conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3250                                             HCI_ROLE_SLAVE);
3251                         if (!conn) {
3252                                 bt_dev_err(hdev, "no memory for new conn");
3253                                 goto unlock;
3254                         }
3255                 } else {
3256                         if (ev->link_type != SCO_LINK)
3257                                 goto unlock;
3258
3259                         conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3260                                                        &ev->bdaddr);
3261                         if (!conn)
3262                                 goto unlock;
3263
3264                         conn->type = SCO_LINK;
3265                 }
3266         }
3267
3268         /* The HCI_Connection_Complete event is only sent once per connection.
3269          * Processing it more than once per connection can corrupt kernel memory.
3270          *
3271          * As the connection handle is set here for the first time, it indicates
3272          * whether the connection is already set up.
3273          */
3274         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
3275                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3276                 goto unlock;
3277         }
3278
3279         if (!status) {
3280                 conn->handle = __le16_to_cpu(ev->handle);
3281                 if (conn->handle > HCI_CONN_HANDLE_MAX) {
3282                         bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
3283                                    conn->handle, HCI_CONN_HANDLE_MAX);
3284                         status = HCI_ERROR_INVALID_PARAMETERS;
3285                         goto done;
3286                 }
3287
3288                 if (conn->type == ACL_LINK) {
3289                         conn->state = BT_CONFIG;
3290                         hci_conn_hold(conn);
3291
3292                         if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3293                             !hci_find_link_key(hdev, &ev->bdaddr))
3294                                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3295                         else
3296                                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3297                 } else
3298                         conn->state = BT_CONNECTED;
3299
3300                 hci_debugfs_create_conn(conn);
3301                 hci_conn_add_sysfs(conn);
3302
3303                 if (test_bit(HCI_AUTH, &hdev->flags))
3304                         set_bit(HCI_CONN_AUTH, &conn->flags);
3305
3306                 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3307                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3308
3309                 /* Get remote features */
3310                 if (conn->type == ACL_LINK) {
3311                         struct hci_cp_read_remote_features cp;
3312                         cp.handle = ev->handle;
3313                         hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3314                                      sizeof(cp), &cp);
3315
3316                         hci_update_scan(hdev);
3317                 }
3318
3319                 /* Set packet type for incoming connection */
3320                 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3321                         struct hci_cp_change_conn_ptype cp;
3322                         cp.handle = ev->handle;
3323                         cp.pkt_type = cpu_to_le16(conn->pkt_type);
3324                         hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3325                                      &cp);
3326                 }
3327         }
3328
3329         if (conn->type == ACL_LINK)
3330                 hci_sco_setup(conn, ev->status);
3331
3332 done:
3333         if (status) {
3334                 hci_conn_failed(conn, status);
3335         } else if (ev->link_type == SCO_LINK) {
3336                 switch (conn->setting & SCO_AIRMODE_MASK) {
3337                 case SCO_AIRMODE_CVSD:
3338                         if (hdev->notify)
3339                                 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3340                         break;
3341                 }
3342
3343                 hci_connect_cfm(conn, status);
3344         }
3345
3346 unlock:
3347         hci_dev_unlock(hdev);
3348
3349         hci_conn_check_pending(hdev);
3350 }
3351
3352 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3353 {
3354         struct hci_cp_reject_conn_req cp;
3355
3356         bacpy(&cp.bdaddr, bdaddr);
3357         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3358         hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3359 }
3360
3361 static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3362                                  struct sk_buff *skb)
3363 {
3364         struct hci_ev_conn_request *ev = data;
3365         int mask = hdev->link_mode;
3366         struct inquiry_entry *ie;
3367         struct hci_conn *conn;
3368         __u8 flags = 0;
3369
3370         bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3371
3372         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3373                                       &flags);
3374
3375         if (!(mask & HCI_LM_ACCEPT)) {
3376                 hci_reject_conn(hdev, &ev->bdaddr);
3377                 return;
3378         }
3379
3380         hci_dev_lock(hdev);
3381
3382         if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3383                                    BDADDR_BREDR)) {
3384                 hci_reject_conn(hdev, &ev->bdaddr);
3385                 goto unlock;
3386         }
3387
3388         /* Require HCI_CONNECTABLE or an accept list entry to accept the
3389          * connection. These features are only touched through mgmt so
3390          * only do the checks if HCI_MGMT is set.
3391          */
3392         if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3393             !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3394             !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3395                                                BDADDR_BREDR)) {
3396                 hci_reject_conn(hdev, &ev->bdaddr);
3397                 goto unlock;
3398         }
3399
3400         /* Connection accepted */
3401
3402         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3403         if (ie)
3404                 memcpy(ie->data.dev_class, ev->dev_class, 3);
3405
3406         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3407                         &ev->bdaddr);
3408         if (!conn) {
3409                 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3410                                     HCI_ROLE_SLAVE);
3411                 if (!conn) {
3412                         bt_dev_err(hdev, "no memory for new connection");
3413                         goto unlock;
3414                 }
3415         }
3416
3417         memcpy(conn->dev_class, ev->dev_class, 3);
3418
3419         hci_dev_unlock(hdev);
3420
3421         if (ev->link_type == ACL_LINK ||
3422             (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3423                 struct hci_cp_accept_conn_req cp;
3424                 conn->state = BT_CONNECT;
3425
3426                 bacpy(&cp.bdaddr, &ev->bdaddr);
3427
3428                 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3429                         cp.role = 0x00; /* Become central */
3430                 else
3431                         cp.role = 0x01; /* Remain peripheral */
3432
3433                 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3434         } else if (!(flags & HCI_PROTO_DEFER)) {
3435                 struct hci_cp_accept_sync_conn_req cp;
3436                 conn->state = BT_CONNECT;
3437
3438                 bacpy(&cp.bdaddr, &ev->bdaddr);
3439                 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3440
3441                 cp.tx_bandwidth   = cpu_to_le32(0x00001f40);
3442                 cp.rx_bandwidth   = cpu_to_le32(0x00001f40);
3443                 cp.max_latency    = cpu_to_le16(0xffff);
3444                 cp.content_format = cpu_to_le16(hdev->voice_setting);
3445                 cp.retrans_effort = 0xff;
3446
3447                 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3448                              &cp);
3449         } else {
3450                 conn->state = BT_CONNECT2;
3451                 hci_connect_cfm(conn, 0);
3452         }
3453
3454         return;
3455 unlock:
3456         hci_dev_unlock(hdev);
3457 }
3458
3459 static u8 hci_to_mgmt_reason(u8 err)
3460 {
3461         switch (err) {
3462         case HCI_ERROR_CONNECTION_TIMEOUT:
3463                 return MGMT_DEV_DISCONN_TIMEOUT;
3464         case HCI_ERROR_REMOTE_USER_TERM:
3465         case HCI_ERROR_REMOTE_LOW_RESOURCES:
3466         case HCI_ERROR_REMOTE_POWER_OFF:
3467                 return MGMT_DEV_DISCONN_REMOTE;
3468         case HCI_ERROR_LOCAL_HOST_TERM:
3469                 return MGMT_DEV_DISCONN_LOCAL_HOST;
3470         default:
3471                 return MGMT_DEV_DISCONN_UNKNOWN;
3472         }
3473 }
3474
3475 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3476                                      struct sk_buff *skb)
3477 {
3478         struct hci_ev_disconn_complete *ev = data;
3479         u8 reason;
3480         struct hci_conn_params *params;
3481         struct hci_conn *conn;
3482         bool mgmt_connected;
3483
3484         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3485
3486         hci_dev_lock(hdev);
3487
3488         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3489         if (!conn)
3490                 goto unlock;
3491
3492         if (ev->status) {
3493                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3494                                        conn->dst_type, ev->status);
3495                 goto unlock;
3496         }
3497
3498         conn->state = BT_CLOSED;
3499
3500         mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3501
3502         if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3503                 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3504         else
3505                 reason = hci_to_mgmt_reason(ev->reason);
3506
3507         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3508                                 reason, mgmt_connected);
3509
3510         if (conn->type == ACL_LINK) {
3511                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3512                         hci_remove_link_key(hdev, &conn->dst);
3513
3514                 hci_update_scan(hdev);
3515         }
3516
3517         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3518         if (params) {
3519                 switch (params->auto_connect) {
3520                 case HCI_AUTO_CONN_LINK_LOSS:
3521                         if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3522                                 break;
3523                         fallthrough;
3524
3525                 case HCI_AUTO_CONN_DIRECT:
3526                 case HCI_AUTO_CONN_ALWAYS:
3527                         list_del_init(&params->action);
3528                         list_add(&params->action, &hdev->pend_le_conns);
3529                         hci_update_passive_scan(hdev);
3530                         break;
3531
3532                 default:
3533                         break;
3534                 }
3535         }
3536
3537         hci_disconn_cfm(conn, ev->reason);
3538
3539         /* Re-enable advertising if necessary, since it might
3540          * have been disabled by the connection. From the
3541          * HCI_LE_Set_Advertise_Enable command description in
3542          * the core specification (v4.0):
3543          * "The Controller shall continue advertising until the Host
3544          * issues an LE_Set_Advertise_Enable command with
3545          * Advertising_Enable set to 0x00 (Advertising is disabled)
3546          * or until a connection is created or until the Advertising
3547          * is timed out due to Directed Advertising."
3548          */
3549         if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3550                 hdev->cur_adv_instance = conn->adv_instance;
3551                 hci_enable_advertising(hdev);
3552         }
3553
3554         hci_conn_del(conn);
3555
3556 unlock:
3557         hci_dev_unlock(hdev);
3558 }
3559
3560 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3561                                   struct sk_buff *skb)
3562 {
3563         struct hci_ev_auth_complete *ev = data;
3564         struct hci_conn *conn;
3565
3566         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3567
3568         hci_dev_lock(hdev);
3569
3570         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3571         if (!conn)
3572                 goto unlock;
3573
3574         if (!ev->status) {
3575                 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3576
3577                 if (!hci_conn_ssp_enabled(conn) &&
3578                     test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
3579                         bt_dev_info(hdev, "re-auth of legacy device is not possible.");
3580                 } else {
3581                         set_bit(HCI_CONN_AUTH, &conn->flags);
3582                         conn->sec_level = conn->pending_sec_level;
3583                 }
3584         } else {
3585                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3586                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3587
3588                 mgmt_auth_failed(conn, ev->status);
3589         }
3590
3591         clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3592         clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
3593
3594         if (conn->state == BT_CONFIG) {
3595                 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3596                         struct hci_cp_set_conn_encrypt cp;
3597                         cp.handle  = ev->handle;
3598                         cp.encrypt = 0x01;
3599                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3600                                      &cp);
3601                 } else {
3602                         conn->state = BT_CONNECTED;
3603                         hci_connect_cfm(conn, ev->status);
3604                         hci_conn_drop(conn);
3605                 }
3606         } else {
3607                 hci_auth_cfm(conn, ev->status);
3608
3609                 hci_conn_hold(conn);
3610                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3611                 hci_conn_drop(conn);
3612         }
3613
3614         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3615                 if (!ev->status) {
3616                         struct hci_cp_set_conn_encrypt cp;
3617                         cp.handle  = ev->handle;
3618                         cp.encrypt = 0x01;
3619                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3620                                      &cp);
3621                 } else {
3622                         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3623                         hci_encrypt_cfm(conn, ev->status);
3624                 }
3625         }
3626
3627 unlock:
3628         hci_dev_unlock(hdev);
3629 }
3630
3631 static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3632                                 struct sk_buff *skb)
3633 {
3634         struct hci_ev_remote_name *ev = data;
3635         struct hci_conn *conn;
3636
3637         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3638
3639         hci_conn_check_pending(hdev);
3640
3641         hci_dev_lock(hdev);
3642
3643         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3644
3645         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3646                 goto check_auth;
3647
3648         if (ev->status == 0)
3649                 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3650                                        strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3651         else
3652                 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3653
3654 check_auth:
3655         if (!conn)
3656                 goto unlock;
3657
3658         if (!hci_outgoing_auth_needed(hdev, conn))
3659                 goto unlock;
3660
3661         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3662                 struct hci_cp_auth_requested cp;
3663
3664                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3665
3666                 cp.handle = __cpu_to_le16(conn->handle);
3667                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3668         }
3669
3670 unlock:
3671         hci_dev_unlock(hdev);
3672 }
3673
3674 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3675                                    struct sk_buff *skb)
3676 {
3677         struct hci_ev_encrypt_change *ev = data;
3678         struct hci_conn *conn;
3679
3680         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3681
3682         hci_dev_lock(hdev);
3683
3684         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3685         if (!conn)
3686                 goto unlock;
3687
3688         if (!ev->status) {
3689                 if (ev->encrypt) {
3690                         /* Encryption implies authentication */
3691                         set_bit(HCI_CONN_AUTH, &conn->flags);
3692                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3693                         conn->sec_level = conn->pending_sec_level;
3694
3695                         /* P-256 authentication key implies FIPS */
3696                         if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3697                                 set_bit(HCI_CONN_FIPS, &conn->flags);
3698
3699                         if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3700                             conn->type == LE_LINK)
3701                                 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3702                 } else {
3703                         clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3704                         clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3705                 }
3706         }
3707
3708         /* We should disregard the current RPA and generate a new one
3709          * whenever the encryption procedure fails.
3710          */
3711         if (ev->status && conn->type == LE_LINK) {
3712                 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3713                 hci_adv_instances_set_rpa_expired(hdev, true);
3714         }
3715
3716         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3717
3718         /* Check link security requirements are met */
3719         if (!hci_conn_check_link_mode(conn))
3720                 ev->status = HCI_ERROR_AUTH_FAILURE;
3721
3722         if (ev->status && conn->state == BT_CONNECTED) {
3723                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3724                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3725
3726                 /* Notify upper layers so they can cleanup before
3727                  * disconnecting.
3728                  */
3729                 hci_encrypt_cfm(conn, ev->status);
3730                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3731                 hci_conn_drop(conn);
3732                 goto unlock;
3733         }
3734
3735         /* Try reading the encryption key size for encrypted ACL links */
3736         if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3737                 struct hci_cp_read_enc_key_size cp;
3738
3739                 /* Only send HCI_Read_Encryption_Key_Size if the
3740                  * controller really supports it. If it doesn't, assume
3741                  * the default size (16).
3742                  */
3743                 if (!(hdev->commands[20] & 0x10)) {
3744                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3745                         goto notify;
3746                 }
3747
3748                 cp.handle = cpu_to_le16(conn->handle);
3749                 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3750                                  sizeof(cp), &cp)) {
3751                         bt_dev_err(hdev, "sending read key size failed");
3752                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3753                         goto notify;
3754                 }
3755
3756                 goto unlock;
3757         }
3758
3759         /* Set the default Authenticated Payload Timeout after
3760          * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3761          * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3762          * sent when the link is active and Encryption is enabled, the conn
3763          * type can be either LE or ACL and controller must support LMP Ping.
3764          * Ensure for AES-CCM encryption as well.
3765          */
3766         if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3767             test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3768             ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3769              (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3770                 struct hci_cp_write_auth_payload_to cp;
3771
3772                 cp.handle = cpu_to_le16(conn->handle);
3773                 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3774                 hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3775                              sizeof(cp), &cp);
3776         }
3777
3778 notify:
3779         hci_encrypt_cfm(conn, ev->status);
3780
3781 unlock:
3782         hci_dev_unlock(hdev);
3783 }
3784
3785 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3786                                              struct sk_buff *skb)
3787 {
3788         struct hci_ev_change_link_key_complete *ev = data;
3789         struct hci_conn *conn;
3790
3791         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3792
3793         hci_dev_lock(hdev);
3794
3795         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3796         if (conn) {
3797                 if (!ev->status)
3798                         set_bit(HCI_CONN_SECURE, &conn->flags);
3799
3800                 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3801
3802                 hci_key_change_cfm(conn, ev->status);
3803         }
3804
3805         hci_dev_unlock(hdev);
3806 }
3807
3808 static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3809                                     struct sk_buff *skb)
3810 {
3811         struct hci_ev_remote_features *ev = data;
3812         struct hci_conn *conn;
3813
3814         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3815
3816         hci_dev_lock(hdev);
3817
3818         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3819         if (!conn)
3820                 goto unlock;
3821
3822         if (!ev->status)
3823                 memcpy(conn->features[0], ev->features, 8);
3824
3825         if (conn->state != BT_CONFIG)
3826                 goto unlock;
3827
3828         if (!ev->status && lmp_ext_feat_capable(hdev) &&
3829             lmp_ext_feat_capable(conn)) {
3830                 struct hci_cp_read_remote_ext_features cp;
3831                 cp.handle = ev->handle;
3832                 cp.page = 0x01;
3833                 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3834                              sizeof(cp), &cp);
3835                 goto unlock;
3836         }
3837
3838         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3839                 struct hci_cp_remote_name_req cp;
3840                 memset(&cp, 0, sizeof(cp));
3841                 bacpy(&cp.bdaddr, &conn->dst);
3842                 cp.pscan_rep_mode = 0x02;
3843                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3844         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3845                 mgmt_device_connected(hdev, conn, NULL, 0);
3846
3847         if (!hci_outgoing_auth_needed(hdev, conn)) {
3848                 conn->state = BT_CONNECTED;
3849                 hci_connect_cfm(conn, ev->status);
3850                 hci_conn_drop(conn);
3851         }
3852
3853 unlock:
3854         hci_dev_unlock(hdev);
3855 }
3856
3857 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3858 {
3859         cancel_delayed_work(&hdev->cmd_timer);
3860
3861         rcu_read_lock();
3862         if (!test_bit(HCI_RESET, &hdev->flags)) {
3863                 if (ncmd) {
3864                         cancel_delayed_work(&hdev->ncmd_timer);
3865                         atomic_set(&hdev->cmd_cnt, 1);
3866                 } else {
3867                         if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3868                                 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3869                                                    HCI_NCMD_TIMEOUT);
3870                 }
3871         }
3872         rcu_read_unlock();
3873 }
3874
3875 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3876                                         struct sk_buff *skb)
3877 {
3878         struct hci_rp_le_read_buffer_size_v2 *rp = data;
3879
3880         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3881
3882         if (rp->status)
3883                 return rp->status;
3884
3885         hdev->le_mtu   = __le16_to_cpu(rp->acl_mtu);
3886         hdev->le_pkts  = rp->acl_max_pkt;
3887         hdev->iso_mtu  = __le16_to_cpu(rp->iso_mtu);
3888         hdev->iso_pkts = rp->iso_max_pkt;
3889
3890         hdev->le_cnt  = hdev->le_pkts;
3891         hdev->iso_cnt = hdev->iso_pkts;
3892
3893         BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3894                hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3895
3896         return rp->status;
3897 }
3898
3899 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3900                                    struct sk_buff *skb)
3901 {
3902         struct hci_rp_le_set_cig_params *rp = data;
3903         struct hci_conn *conn;
3904         int i = 0;
3905
3906         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3907
3908         hci_dev_lock(hdev);
3909
3910         if (rp->status) {
3911                 while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) {
3912                         conn->state = BT_CLOSED;
3913                         hci_connect_cfm(conn, rp->status);
3914                         hci_conn_del(conn);
3915                 }
3916                 goto unlock;
3917         }
3918
3919         rcu_read_lock();
3920
3921         list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
3922                 if (conn->type != ISO_LINK || conn->iso_qos.cig != rp->cig_id ||
3923                     conn->state == BT_CONNECTED)
3924                         continue;
3925
3926                 conn->handle = __le16_to_cpu(rp->handle[i++]);
3927
3928                 bt_dev_dbg(hdev, "%p handle 0x%4.4x link %p", conn,
3929                            conn->handle, conn->link);
3930
3931                 /* Create CIS if LE is already connected */
3932                 if (conn->link && conn->link->state == BT_CONNECTED) {
3933                         rcu_read_unlock();
3934                         hci_le_create_cis(conn->link);
3935                         rcu_read_lock();
3936                 }
3937
3938                 if (i == rp->num_handles)
3939                         break;
3940         }
3941
3942         rcu_read_unlock();
3943
3944 unlock:
3945         hci_dev_unlock(hdev);
3946
3947         return rp->status;
3948 }
3949
3950 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3951                                    struct sk_buff *skb)
3952 {
3953         struct hci_rp_le_setup_iso_path *rp = data;
3954         struct hci_cp_le_setup_iso_path *cp;
3955         struct hci_conn *conn;
3956
3957         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3958
3959         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3960         if (!cp)
3961                 return rp->status;
3962
3963         hci_dev_lock(hdev);
3964
3965         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3966         if (!conn)
3967                 goto unlock;
3968
3969         if (rp->status) {
3970                 hci_connect_cfm(conn, rp->status);
3971                 hci_conn_del(conn);
3972                 goto unlock;
3973         }
3974
3975         switch (cp->direction) {
3976         /* Input (Host to Controller) */
3977         case 0x00:
3978                 /* Only confirm connection if output only */
3979                 if (conn->iso_qos.out.sdu && !conn->iso_qos.in.sdu)
3980                         hci_connect_cfm(conn, rp->status);
3981                 break;
3982         /* Output (Controller to Host) */
3983         case 0x01:
3984                 /* Confirm connection since conn->iso_qos is always configured
3985                  * last.
3986                  */
3987                 hci_connect_cfm(conn, rp->status);
3988                 break;
3989         }
3990
3991 unlock:
3992         hci_dev_unlock(hdev);
3993         return rp->status;
3994 }
3995
3996 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
3997 {
3998         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3999 }
4000
4001 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
4002                                    struct sk_buff *skb)
4003 {
4004         struct hci_ev_status *rp = data;
4005         struct hci_cp_le_set_per_adv_params *cp;
4006
4007         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4008
4009         if (rp->status)
4010                 return rp->status;
4011
4012         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
4013         if (!cp)
4014                 return rp->status;
4015
4016         /* TODO: set the conn state */
4017         return rp->status;
4018 }
4019
4020 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
4021                                        struct sk_buff *skb)
4022 {
4023         struct hci_ev_status *rp = data;
4024         __u8 *sent;
4025
4026         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4027
4028         if (rp->status)
4029                 return rp->status;
4030
4031         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
4032         if (!sent)
4033                 return rp->status;
4034
4035         hci_dev_lock(hdev);
4036
4037         if (*sent)
4038                 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
4039         else
4040                 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
4041
4042         hci_dev_unlock(hdev);
4043
4044         return rp->status;
4045 }
4046
4047 #define HCI_CC_VL(_op, _func, _min, _max) \
4048 { \
4049         .op = _op, \
4050         .func = _func, \
4051         .min_len = _min, \
4052         .max_len = _max, \
4053 }
4054
4055 #define HCI_CC(_op, _func, _len) \
4056         HCI_CC_VL(_op, _func, _len, _len)
4057
4058 #define HCI_CC_STATUS(_op, _func) \
4059         HCI_CC(_op, _func, sizeof(struct hci_ev_status))
4060
4061 static const struct hci_cc {
4062         u16  op;
4063         u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4064         u16  min_len;
4065         u16  max_len;
4066 } hci_cc_table[] = {
4067         HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4068         HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4069         HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4070         HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4071                       hci_cc_remote_name_req_cancel),
4072         HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4073                sizeof(struct hci_rp_role_discovery)),
4074         HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4075                sizeof(struct hci_rp_read_link_policy)),
4076         HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4077                sizeof(struct hci_rp_write_link_policy)),
4078         HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4079                sizeof(struct hci_rp_read_def_link_policy)),
4080         HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4081                       hci_cc_write_def_link_policy),
4082         HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4083         HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4084                sizeof(struct hci_rp_read_stored_link_key)),
4085         HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4086                sizeof(struct hci_rp_delete_stored_link_key)),
4087         HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4088         HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4089                sizeof(struct hci_rp_read_local_name)),
4090         HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4091         HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4092         HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4093         HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4094         HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4095                sizeof(struct hci_rp_read_class_of_dev)),
4096         HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4097         HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4098                sizeof(struct hci_rp_read_voice_setting)),
4099         HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4100         HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4101                sizeof(struct hci_rp_read_num_supported_iac)),
4102         HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4103         HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4104         HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4105                sizeof(struct hci_rp_read_auth_payload_to)),
4106         HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4107                sizeof(struct hci_rp_write_auth_payload_to)),
4108         HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4109                sizeof(struct hci_rp_read_local_version)),
4110         HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4111                sizeof(struct hci_rp_read_local_commands)),
4112         HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4113                sizeof(struct hci_rp_read_local_features)),
4114         HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4115                sizeof(struct hci_rp_read_local_ext_features)),
4116         HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4117                sizeof(struct hci_rp_read_buffer_size)),
4118         HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4119                sizeof(struct hci_rp_read_bd_addr)),
4120         HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4121                sizeof(struct hci_rp_read_local_pairing_opts)),
4122         HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4123                sizeof(struct hci_rp_read_page_scan_activity)),
4124         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4125                       hci_cc_write_page_scan_activity),
4126         HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4127                sizeof(struct hci_rp_read_page_scan_type)),
4128         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4129         HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4130                sizeof(struct hci_rp_read_data_block_size)),
4131         HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4132                sizeof(struct hci_rp_read_flow_control_mode)),
4133         HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4134                sizeof(struct hci_rp_read_local_amp_info)),
4135         HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4136                sizeof(struct hci_rp_read_clock)),
4137         HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4138                sizeof(struct hci_rp_read_enc_key_size)),
4139         HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4140                sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4141         HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4142                hci_cc_read_def_err_data_reporting,
4143                sizeof(struct hci_rp_read_def_err_data_reporting)),
4144         HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4145                       hci_cc_write_def_err_data_reporting),
4146         HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4147                sizeof(struct hci_rp_pin_code_reply)),
4148         HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4149                sizeof(struct hci_rp_pin_code_neg_reply)),
4150         HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4151                sizeof(struct hci_rp_read_local_oob_data)),
4152         HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4153                sizeof(struct hci_rp_read_local_oob_ext_data)),
4154         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4155                sizeof(struct hci_rp_le_read_buffer_size)),
4156         HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4157                sizeof(struct hci_rp_le_read_local_features)),
4158         HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4159                sizeof(struct hci_rp_le_read_adv_tx_power)),
4160         HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4161                sizeof(struct hci_rp_user_confirm_reply)),
4162         HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4163                sizeof(struct hci_rp_user_confirm_reply)),
4164         HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4165                sizeof(struct hci_rp_user_confirm_reply)),
4166         HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4167                sizeof(struct hci_rp_user_confirm_reply)),
4168         HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4169         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4170         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4171         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4172         HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4173                hci_cc_le_read_accept_list_size,
4174                sizeof(struct hci_rp_le_read_accept_list_size)),
4175         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4176         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4177                       hci_cc_le_add_to_accept_list),
4178         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4179                       hci_cc_le_del_from_accept_list),
4180         HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4181                sizeof(struct hci_rp_le_read_supported_states)),
4182         HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4183                sizeof(struct hci_rp_le_read_def_data_len)),
4184         HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4185                       hci_cc_le_write_def_data_len),
4186         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4187                       hci_cc_le_add_to_resolv_list),
4188         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4189                       hci_cc_le_del_from_resolv_list),
4190         HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4191                       hci_cc_le_clear_resolv_list),
4192         HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4193                sizeof(struct hci_rp_le_read_resolv_list_size)),
4194         HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4195                       hci_cc_le_set_addr_resolution_enable),
4196         HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4197                sizeof(struct hci_rp_le_read_max_data_len)),
4198         HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4199                       hci_cc_write_le_host_supported),
4200         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4201         HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4202                sizeof(struct hci_rp_read_rssi)),
4203         HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4204                sizeof(struct hci_rp_read_tx_power)),
4205         HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4206         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4207                       hci_cc_le_set_ext_scan_param),
4208         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4209                       hci_cc_le_set_ext_scan_enable),
4210         HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4211         HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4212                hci_cc_le_read_num_adv_sets,
4213                sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4214         HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4215                sizeof(struct hci_rp_le_set_ext_adv_params)),
4216         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4217                       hci_cc_le_set_ext_adv_enable),
4218         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4219                       hci_cc_le_set_adv_set_random_addr),
4220         HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4221         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4222         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4223         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4224                       hci_cc_le_set_per_adv_enable),
4225         HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4226                sizeof(struct hci_rp_le_read_transmit_power)),
4227 #ifdef TIZEN_BT
4228         HCI_CC(HCI_OP_ENABLE_RSSI, hci_cc_enable_rssi,
4229                sizeof(struct hci_cc_rsp_enable_rssi)),
4230         HCI_CC(HCI_OP_GET_RAW_RSSI, hci_cc_get_raw_rssi,
4231                sizeof(struct hci_cc_rp_get_raw_rssi)),
4232 #endif
4233         HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4234         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4235                sizeof(struct hci_rp_le_read_buffer_size_v2)),
4236         HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4237                   sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4238         HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4239                sizeof(struct hci_rp_le_setup_iso_path)),
4240 };
4241
4242 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4243                       struct sk_buff *skb)
4244 {
4245         void *data;
4246
4247         if (skb->len < cc->min_len) {
4248                 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4249                            cc->op, skb->len, cc->min_len);
4250                 return HCI_ERROR_UNSPECIFIED;
4251         }
4252
4253         /* Just warn if the length is over max_len size it still be possible to
4254          * partially parse the cc so leave to callback to decide if that is
4255          * acceptable.
4256          */
4257         if (skb->len > cc->max_len)
4258                 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4259                             cc->op, skb->len, cc->max_len);
4260
4261         data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4262         if (!data)
4263                 return HCI_ERROR_UNSPECIFIED;
4264
4265         return cc->func(hdev, data, skb);
4266 }
4267
4268 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4269                                  struct sk_buff *skb, u16 *opcode, u8 *status,
4270                                  hci_req_complete_t *req_complete,
4271                                  hci_req_complete_skb_t *req_complete_skb)
4272 {
4273         struct hci_ev_cmd_complete *ev = data;
4274         int i;
4275
4276         *opcode = __le16_to_cpu(ev->opcode);
4277
4278         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4279
4280         for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4281                 if (hci_cc_table[i].op == *opcode) {
4282                         *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4283                         break;
4284                 }
4285         }
4286
4287         if (i == ARRAY_SIZE(hci_cc_table)) {
4288                 /* Unknown opcode, assume byte 0 contains the status, so
4289                  * that e.g. __hci_cmd_sync() properly returns errors
4290                  * for vendor specific commands send by HCI drivers.
4291                  * If a vendor doesn't actually follow this convention we may
4292                  * need to introduce a vendor CC table in order to properly set
4293                  * the status.
4294                  */
4295                 *status = skb->data[0];
4296         }
4297
4298         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4299
4300         hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4301                              req_complete_skb);
4302
4303         if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4304                 bt_dev_err(hdev,
4305                            "unexpected event for opcode 0x%4.4x", *opcode);
4306                 return;
4307         }
4308
4309         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4310                 queue_work(hdev->workqueue, &hdev->cmd_work);
4311 }
4312
4313 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4314 {
4315         struct hci_cp_le_create_cis *cp;
4316         int i;
4317
4318         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4319
4320         if (!status)
4321                 return;
4322
4323         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4324         if (!cp)
4325                 return;
4326
4327         hci_dev_lock(hdev);
4328
4329         /* Remove connection if command failed */
4330         for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4331                 struct hci_conn *conn;
4332                 u16 handle;
4333
4334                 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4335
4336                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4337                 if (conn) {
4338                         conn->state = BT_CLOSED;
4339                         hci_connect_cfm(conn, status);
4340                         hci_conn_del(conn);
4341                 }
4342         }
4343
4344         hci_dev_unlock(hdev);
4345 }
4346
4347 #define HCI_CS(_op, _func) \
4348 { \
4349         .op = _op, \
4350         .func = _func, \
4351 }
4352
4353 static const struct hci_cs {
4354         u16  op;
4355         void (*func)(struct hci_dev *hdev, __u8 status);
4356 } hci_cs_table[] = {
4357         HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4358         HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4359         HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4360         HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4361         HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4362         HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4363         HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4364         HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4365         HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4366                hci_cs_read_remote_ext_features),
4367         HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4368         HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4369                hci_cs_enhanced_setup_sync_conn),
4370         HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4371         HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4372         HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4373         HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4374         HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4375         HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4376         HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4377         HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4378         HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4379 };
4380
4381 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4382                                struct sk_buff *skb, u16 *opcode, u8 *status,
4383                                hci_req_complete_t *req_complete,
4384                                hci_req_complete_skb_t *req_complete_skb)
4385 {
4386         struct hci_ev_cmd_status *ev = data;
4387         int i;
4388
4389         *opcode = __le16_to_cpu(ev->opcode);
4390         *status = ev->status;
4391
4392         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4393
4394         for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4395                 if (hci_cs_table[i].op == *opcode) {
4396                         hci_cs_table[i].func(hdev, ev->status);
4397                         break;
4398                 }
4399         }
4400
4401         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4402
4403         /* Indicate request completion if the command failed. Also, if
4404          * we're not waiting for a special event and we get a success
4405          * command status we should try to flag the request as completed
4406          * (since for this kind of commands there will not be a command
4407          * complete event).
4408          */
4409         if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4410                 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4411                                      req_complete_skb);
4412                 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4413                         bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4414                                    *opcode);
4415                         return;
4416                 }
4417         }
4418
4419         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4420                 queue_work(hdev->workqueue, &hdev->cmd_work);
4421 }
4422
4423 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4424                                    struct sk_buff *skb)
4425 {
4426         struct hci_ev_hardware_error *ev = data;
4427
4428         bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4429
4430 #ifdef TIZEN_BT
4431         hci_dev_lock(hdev);
4432         mgmt_hardware_error(hdev, ev->code);
4433         hci_dev_unlock(hdev);
4434 #endif
4435         hdev->hw_error_code = ev->code;
4436
4437         queue_work(hdev->req_workqueue, &hdev->error_reset);
4438 }
4439
4440 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4441                                 struct sk_buff *skb)
4442 {
4443         struct hci_ev_role_change *ev = data;
4444         struct hci_conn *conn;
4445
4446         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4447
4448         hci_dev_lock(hdev);
4449
4450         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4451         if (conn) {
4452                 if (!ev->status)
4453                         conn->role = ev->role;
4454
4455                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4456
4457                 hci_role_switch_cfm(conn, ev->status, ev->role);
4458         }
4459
4460         hci_dev_unlock(hdev);
4461 }
4462
4463 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4464                                   struct sk_buff *skb)
4465 {
4466         struct hci_ev_num_comp_pkts *ev = data;
4467         int i;
4468
4469         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4470                              flex_array_size(ev, handles, ev->num)))
4471                 return;
4472
4473         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4474                 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4475                 return;
4476         }
4477
4478         bt_dev_dbg(hdev, "num %d", ev->num);
4479
4480         for (i = 0; i < ev->num; i++) {
4481                 struct hci_comp_pkts_info *info = &ev->handles[i];
4482                 struct hci_conn *conn;
4483                 __u16  handle, count;
4484
4485                 handle = __le16_to_cpu(info->handle);
4486                 count  = __le16_to_cpu(info->count);
4487
4488                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4489                 if (!conn)
4490                         continue;
4491
4492                 conn->sent -= count;
4493
4494                 switch (conn->type) {
4495                 case ACL_LINK:
4496                         hdev->acl_cnt += count;
4497                         if (hdev->acl_cnt > hdev->acl_pkts)
4498                                 hdev->acl_cnt = hdev->acl_pkts;
4499                         break;
4500
4501                 case LE_LINK:
4502                         if (hdev->le_pkts) {
4503                                 hdev->le_cnt += count;
4504                                 if (hdev->le_cnt > hdev->le_pkts)
4505                                         hdev->le_cnt = hdev->le_pkts;
4506                         } else {
4507                                 hdev->acl_cnt += count;
4508                                 if (hdev->acl_cnt > hdev->acl_pkts)
4509                                         hdev->acl_cnt = hdev->acl_pkts;
4510                         }
4511                         break;
4512
4513                 case SCO_LINK:
4514                         hdev->sco_cnt += count;
4515                         if (hdev->sco_cnt > hdev->sco_pkts)
4516                                 hdev->sco_cnt = hdev->sco_pkts;
4517                         break;
4518
4519                 case ISO_LINK:
4520                         if (hdev->iso_pkts) {
4521                                 hdev->iso_cnt += count;
4522                                 if (hdev->iso_cnt > hdev->iso_pkts)
4523                                         hdev->iso_cnt = hdev->iso_pkts;
4524                         } else if (hdev->le_pkts) {
4525                                 hdev->le_cnt += count;
4526                                 if (hdev->le_cnt > hdev->le_pkts)
4527                                         hdev->le_cnt = hdev->le_pkts;
4528                         } else {
4529                                 hdev->acl_cnt += count;
4530                                 if (hdev->acl_cnt > hdev->acl_pkts)
4531                                         hdev->acl_cnt = hdev->acl_pkts;
4532                         }
4533                         break;
4534
4535                 default:
4536                         bt_dev_err(hdev, "unknown type %d conn %p",
4537                                    conn->type, conn);
4538                         break;
4539                 }
4540         }
4541
4542         queue_work(hdev->workqueue, &hdev->tx_work);
4543 }
4544
4545 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4546                                                  __u16 handle)
4547 {
4548         struct hci_chan *chan;
4549
4550         switch (hdev->dev_type) {
4551         case HCI_PRIMARY:
4552                 return hci_conn_hash_lookup_handle(hdev, handle);
4553         case HCI_AMP:
4554                 chan = hci_chan_lookup_handle(hdev, handle);
4555                 if (chan)
4556                         return chan->conn;
4557                 break;
4558         default:
4559                 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4560                 break;
4561         }
4562
4563         return NULL;
4564 }
4565
4566 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4567                                     struct sk_buff *skb)
4568 {
4569         struct hci_ev_num_comp_blocks *ev = data;
4570         int i;
4571
4572         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4573                              flex_array_size(ev, handles, ev->num_hndl)))
4574                 return;
4575
4576         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4577                 bt_dev_err(hdev, "wrong event for mode %d",
4578                            hdev->flow_ctl_mode);
4579                 return;
4580         }
4581
4582         bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4583                    ev->num_hndl);
4584
4585         for (i = 0; i < ev->num_hndl; i++) {
4586                 struct hci_comp_blocks_info *info = &ev->handles[i];
4587                 struct hci_conn *conn = NULL;
4588                 __u16  handle, block_count;
4589
4590                 handle = __le16_to_cpu(info->handle);
4591                 block_count = __le16_to_cpu(info->blocks);
4592
4593                 conn = __hci_conn_lookup_handle(hdev, handle);
4594                 if (!conn)
4595                         continue;
4596
4597                 conn->sent -= block_count;
4598
4599                 switch (conn->type) {
4600                 case ACL_LINK:
4601                 case AMP_LINK:
4602                         hdev->block_cnt += block_count;
4603                         if (hdev->block_cnt > hdev->num_blocks)
4604                                 hdev->block_cnt = hdev->num_blocks;
4605                         break;
4606
4607                 default:
4608                         bt_dev_err(hdev, "unknown type %d conn %p",
4609                                    conn->type, conn);
4610                         break;
4611                 }
4612         }
4613
4614         queue_work(hdev->workqueue, &hdev->tx_work);
4615 }
4616
4617 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4618                                 struct sk_buff *skb)
4619 {
4620         struct hci_ev_mode_change *ev = data;
4621         struct hci_conn *conn;
4622
4623         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4624
4625         hci_dev_lock(hdev);
4626
4627         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4628         if (conn) {
4629                 conn->mode = ev->mode;
4630
4631                 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4632                                         &conn->flags)) {
4633                         if (conn->mode == HCI_CM_ACTIVE)
4634                                 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4635                         else
4636                                 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4637                 }
4638
4639                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4640                         hci_sco_setup(conn, ev->status);
4641         }
4642
4643         hci_dev_unlock(hdev);
4644 }
4645
4646 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4647                                      struct sk_buff *skb)
4648 {
4649         struct hci_ev_pin_code_req *ev = data;
4650         struct hci_conn *conn;
4651
4652         bt_dev_dbg(hdev, "");
4653
4654         hci_dev_lock(hdev);
4655
4656         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4657         if (!conn)
4658                 goto unlock;
4659
4660         if (conn->state == BT_CONNECTED) {
4661                 hci_conn_hold(conn);
4662                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4663                 hci_conn_drop(conn);
4664         }
4665
4666         if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4667             !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4668                 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4669                              sizeof(ev->bdaddr), &ev->bdaddr);
4670         } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4671                 u8 secure;
4672
4673                 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4674                         secure = 1;
4675                 else
4676                         secure = 0;
4677
4678                 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4679         }
4680
4681 unlock:
4682         hci_dev_unlock(hdev);
4683 }
4684
4685 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4686 {
4687         if (key_type == HCI_LK_CHANGED_COMBINATION)
4688                 return;
4689
4690         conn->pin_length = pin_len;
4691         conn->key_type = key_type;
4692
4693         switch (key_type) {
4694         case HCI_LK_LOCAL_UNIT:
4695         case HCI_LK_REMOTE_UNIT:
4696         case HCI_LK_DEBUG_COMBINATION:
4697                 return;
4698         case HCI_LK_COMBINATION:
4699                 if (pin_len == 16)
4700                         conn->pending_sec_level = BT_SECURITY_HIGH;
4701                 else
4702                         conn->pending_sec_level = BT_SECURITY_MEDIUM;
4703                 break;
4704         case HCI_LK_UNAUTH_COMBINATION_P192:
4705         case HCI_LK_UNAUTH_COMBINATION_P256:
4706                 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4707                 break;
4708         case HCI_LK_AUTH_COMBINATION_P192:
4709                 conn->pending_sec_level = BT_SECURITY_HIGH;
4710                 break;
4711         case HCI_LK_AUTH_COMBINATION_P256:
4712                 conn->pending_sec_level = BT_SECURITY_FIPS;
4713                 break;
4714         }
4715 }
4716
4717 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4718                                      struct sk_buff *skb)
4719 {
4720         struct hci_ev_link_key_req *ev = data;
4721         struct hci_cp_link_key_reply cp;
4722         struct hci_conn *conn;
4723         struct link_key *key;
4724
4725         bt_dev_dbg(hdev, "");
4726
4727         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4728                 return;
4729
4730         hci_dev_lock(hdev);
4731
4732         key = hci_find_link_key(hdev, &ev->bdaddr);
4733         if (!key) {
4734                 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4735                 goto not_found;
4736         }
4737
4738         bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4739
4740         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4741         if (conn) {
4742                 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4743
4744                 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4745                      key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4746                     conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4747                         bt_dev_dbg(hdev, "ignoring unauthenticated key");
4748                         goto not_found;
4749                 }
4750
4751                 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4752                     (conn->pending_sec_level == BT_SECURITY_HIGH ||
4753                      conn->pending_sec_level == BT_SECURITY_FIPS)) {
4754                         bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4755                         goto not_found;
4756                 }
4757
4758                 conn_set_key(conn, key->type, key->pin_len);
4759         }
4760
4761         bacpy(&cp.bdaddr, &ev->bdaddr);
4762         memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4763
4764         hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4765
4766         hci_dev_unlock(hdev);
4767
4768         return;
4769
4770 not_found:
4771         hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4772         hci_dev_unlock(hdev);
4773 }
4774
4775 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4776                                     struct sk_buff *skb)
4777 {
4778         struct hci_ev_link_key_notify *ev = data;
4779         struct hci_conn *conn;
4780         struct link_key *key;
4781         bool persistent;
4782         u8 pin_len = 0;
4783
4784         bt_dev_dbg(hdev, "");
4785
4786         hci_dev_lock(hdev);
4787
4788         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4789         if (!conn)
4790                 goto unlock;
4791
4792         hci_conn_hold(conn);
4793         conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4794         hci_conn_drop(conn);
4795
4796         set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4797         conn_set_key(conn, ev->key_type, conn->pin_length);
4798
4799         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4800                 goto unlock;
4801
4802         key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4803                                 ev->key_type, pin_len, &persistent);
4804         if (!key)
4805                 goto unlock;
4806
4807         /* Update connection information since adding the key will have
4808          * fixed up the type in the case of changed combination keys.
4809          */
4810         if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4811                 conn_set_key(conn, key->type, key->pin_len);
4812
4813         mgmt_new_link_key(hdev, key, persistent);
4814
4815         /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4816          * is set. If it's not set simply remove the key from the kernel
4817          * list (we've still notified user space about it but with
4818          * store_hint being 0).
4819          */
4820         if (key->type == HCI_LK_DEBUG_COMBINATION &&
4821             !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4822                 list_del_rcu(&key->list);
4823                 kfree_rcu(key, rcu);
4824                 goto unlock;
4825         }
4826
4827         if (persistent)
4828                 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4829         else
4830                 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4831
4832 unlock:
4833         hci_dev_unlock(hdev);
4834 }
4835
4836 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4837                                  struct sk_buff *skb)
4838 {
4839         struct hci_ev_clock_offset *ev = data;
4840         struct hci_conn *conn;
4841
4842         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4843
4844         hci_dev_lock(hdev);
4845
4846         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4847         if (conn && !ev->status) {
4848                 struct inquiry_entry *ie;
4849
4850                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4851                 if (ie) {
4852                         ie->data.clock_offset = ev->clock_offset;
4853                         ie->timestamp = jiffies;
4854                 }
4855         }
4856
4857         hci_dev_unlock(hdev);
4858 }
4859
4860 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4861                                     struct sk_buff *skb)
4862 {
4863         struct hci_ev_pkt_type_change *ev = data;
4864         struct hci_conn *conn;
4865
4866         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4867
4868         hci_dev_lock(hdev);
4869
4870         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4871         if (conn && !ev->status)
4872                 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4873
4874         hci_dev_unlock(hdev);
4875 }
4876
4877 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4878                                    struct sk_buff *skb)
4879 {
4880         struct hci_ev_pscan_rep_mode *ev = data;
4881         struct inquiry_entry *ie;
4882
4883         bt_dev_dbg(hdev, "");
4884
4885         hci_dev_lock(hdev);
4886
4887         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4888         if (ie) {
4889                 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4890                 ie->timestamp = jiffies;
4891         }
4892
4893         hci_dev_unlock(hdev);
4894 }
4895
4896 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4897                                              struct sk_buff *skb)
4898 {
4899         struct hci_ev_inquiry_result_rssi *ev = edata;
4900         struct inquiry_data data;
4901         int i;
4902
4903         bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4904
4905         if (!ev->num)
4906                 return;
4907
4908         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4909                 return;
4910
4911         hci_dev_lock(hdev);
4912
4913         if (skb->len == array_size(ev->num,
4914                                    sizeof(struct inquiry_info_rssi_pscan))) {
4915                 struct inquiry_info_rssi_pscan *info;
4916
4917                 for (i = 0; i < ev->num; i++) {
4918                         u32 flags;
4919
4920                         info = hci_ev_skb_pull(hdev, skb,
4921                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4922                                                sizeof(*info));
4923                         if (!info) {
4924                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4925                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4926                                 goto unlock;
4927                         }
4928
4929                         bacpy(&data.bdaddr, &info->bdaddr);
4930                         data.pscan_rep_mode     = info->pscan_rep_mode;
4931                         data.pscan_period_mode  = info->pscan_period_mode;
4932                         data.pscan_mode         = info->pscan_mode;
4933                         memcpy(data.dev_class, info->dev_class, 3);
4934                         data.clock_offset       = info->clock_offset;
4935                         data.rssi               = info->rssi;
4936                         data.ssp_mode           = 0x00;
4937
4938                         flags = hci_inquiry_cache_update(hdev, &data, false);
4939
4940                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4941                                           info->dev_class, info->rssi,
4942                                           flags, NULL, 0, NULL, 0, 0);
4943                 }
4944         } else if (skb->len == array_size(ev->num,
4945                                           sizeof(struct inquiry_info_rssi))) {
4946                 struct inquiry_info_rssi *info;
4947
4948                 for (i = 0; i < ev->num; i++) {
4949                         u32 flags;
4950
4951                         info = hci_ev_skb_pull(hdev, skb,
4952                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4953                                                sizeof(*info));
4954                         if (!info) {
4955                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4956                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4957                                 goto unlock;
4958                         }
4959
4960                         bacpy(&data.bdaddr, &info->bdaddr);
4961                         data.pscan_rep_mode     = info->pscan_rep_mode;
4962                         data.pscan_period_mode  = info->pscan_period_mode;
4963                         data.pscan_mode         = 0x00;
4964                         memcpy(data.dev_class, info->dev_class, 3);
4965                         data.clock_offset       = info->clock_offset;
4966                         data.rssi               = info->rssi;
4967                         data.ssp_mode           = 0x00;
4968
4969                         flags = hci_inquiry_cache_update(hdev, &data, false);
4970
4971                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4972                                           info->dev_class, info->rssi,
4973                                           flags, NULL, 0, NULL, 0, 0);
4974                 }
4975         } else {
4976                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4977                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4978         }
4979 unlock:
4980         hci_dev_unlock(hdev);
4981 }
4982
4983 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
4984                                         struct sk_buff *skb)
4985 {
4986         struct hci_ev_remote_ext_features *ev = data;
4987         struct hci_conn *conn;
4988
4989         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4990
4991         hci_dev_lock(hdev);
4992
4993         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4994         if (!conn)
4995                 goto unlock;
4996
4997         if (ev->page < HCI_MAX_PAGES)
4998                 memcpy(conn->features[ev->page], ev->features, 8);
4999
5000         if (!ev->status && ev->page == 0x01) {
5001                 struct inquiry_entry *ie;
5002
5003                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
5004                 if (ie)
5005                         ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5006
5007                 if (ev->features[0] & LMP_HOST_SSP) {
5008                         set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5009                 } else {
5010                         /* It is mandatory by the Bluetooth specification that
5011                          * Extended Inquiry Results are only used when Secure
5012                          * Simple Pairing is enabled, but some devices violate
5013                          * this.
5014                          *
5015                          * To make these devices work, the internal SSP
5016                          * enabled flag needs to be cleared if the remote host
5017                          * features do not indicate SSP support */
5018                         clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5019                 }
5020
5021                 if (ev->features[0] & LMP_HOST_SC)
5022                         set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
5023         }
5024
5025         if (conn->state != BT_CONFIG)
5026                 goto unlock;
5027
5028         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
5029                 struct hci_cp_remote_name_req cp;
5030                 memset(&cp, 0, sizeof(cp));
5031                 bacpy(&cp.bdaddr, &conn->dst);
5032                 cp.pscan_rep_mode = 0x02;
5033                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
5034         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5035                 mgmt_device_connected(hdev, conn, NULL, 0);
5036
5037         if (!hci_outgoing_auth_needed(hdev, conn)) {
5038                 conn->state = BT_CONNECTED;
5039                 hci_connect_cfm(conn, ev->status);
5040                 hci_conn_drop(conn);
5041         }
5042
5043 unlock:
5044         hci_dev_unlock(hdev);
5045 }
5046
5047 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
5048                                        struct sk_buff *skb)
5049 {
5050         struct hci_ev_sync_conn_complete *ev = data;
5051         struct hci_conn *conn;
5052         u8 status = ev->status;
5053
5054         switch (ev->link_type) {
5055         case SCO_LINK:
5056         case ESCO_LINK:
5057                 break;
5058         default:
5059                 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
5060                  * for HCI_Synchronous_Connection_Complete is limited to
5061                  * either SCO or eSCO
5062                  */
5063                 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
5064                 return;
5065         }
5066
5067         bt_dev_dbg(hdev, "status 0x%2.2x", status);
5068
5069         hci_dev_lock(hdev);
5070
5071         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
5072         if (!conn) {
5073                 if (ev->link_type == ESCO_LINK)
5074                         goto unlock;
5075
5076                 /* When the link type in the event indicates SCO connection
5077                  * and lookup of the connection object fails, then check
5078                  * if an eSCO connection object exists.
5079                  *
5080                  * The core limits the synchronous connections to either
5081                  * SCO or eSCO. The eSCO connection is preferred and tried
5082                  * to be setup first and until successfully established,
5083                  * the link type will be hinted as eSCO.
5084                  */
5085                 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
5086                 if (!conn)
5087                         goto unlock;
5088         }
5089
5090         /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
5091          * Processing it more than once per connection can corrupt kernel memory.
5092          *
5093          * As the connection handle is set here for the first time, it indicates
5094          * whether the connection is already set up.
5095          */
5096         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
5097                 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5098                 goto unlock;
5099         }
5100
5101         switch (status) {
5102         case 0x00:
5103                 conn->handle = __le16_to_cpu(ev->handle);
5104                 if (conn->handle > HCI_CONN_HANDLE_MAX) {
5105                         bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
5106                                    conn->handle, HCI_CONN_HANDLE_MAX);
5107                         status = HCI_ERROR_INVALID_PARAMETERS;
5108                         conn->state = BT_CLOSED;
5109                         break;
5110                 }
5111
5112                 conn->state  = BT_CONNECTED;
5113                 conn->type   = ev->link_type;
5114
5115                 hci_debugfs_create_conn(conn);
5116                 hci_conn_add_sysfs(conn);
5117                 break;
5118
5119         case 0x10:      /* Connection Accept Timeout */
5120         case 0x0d:      /* Connection Rejected due to Limited Resources */
5121         case 0x11:      /* Unsupported Feature or Parameter Value */
5122         case 0x1c:      /* SCO interval rejected */
5123         case 0x1a:      /* Unsupported Remote Feature */
5124         case 0x1e:      /* Invalid LMP Parameters */
5125         case 0x1f:      /* Unspecified error */
5126         case 0x20:      /* Unsupported LMP Parameter value */
5127                 if (conn->out) {
5128                         conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5129                                         (hdev->esco_type & EDR_ESCO_MASK);
5130                         if (hci_setup_sync(conn, conn->link->handle))
5131                                 goto unlock;
5132                 }
5133                 fallthrough;
5134
5135         default:
5136                 conn->state = BT_CLOSED;
5137                 break;
5138         }
5139
5140         bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5141         /* Notify only in case of SCO over HCI transport data path which
5142          * is zero and non-zero value shall be non-HCI transport data path
5143          */
5144         if (conn->codec.data_path == 0 && hdev->notify) {
5145                 switch (ev->air_mode) {
5146                 case 0x02:
5147                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5148                         break;
5149                 case 0x03:
5150                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5151                         break;
5152                 }
5153         }
5154
5155         hci_connect_cfm(conn, status);
5156         if (status)
5157                 hci_conn_del(conn);
5158
5159 unlock:
5160         hci_dev_unlock(hdev);
5161 }
5162
5163 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5164 {
5165         size_t parsed = 0;
5166
5167         while (parsed < eir_len) {
5168                 u8 field_len = eir[0];
5169
5170                 if (field_len == 0)
5171                         return parsed;
5172
5173                 parsed += field_len + 1;
5174                 eir += field_len + 1;
5175         }
5176
5177         return eir_len;
5178 }
5179
5180 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5181                                             struct sk_buff *skb)
5182 {
5183         struct hci_ev_ext_inquiry_result *ev = edata;
5184         struct inquiry_data data;
5185         size_t eir_len;
5186         int i;
5187
5188         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5189                              flex_array_size(ev, info, ev->num)))
5190                 return;
5191
5192         bt_dev_dbg(hdev, "num %d", ev->num);
5193
5194         if (!ev->num)
5195                 return;
5196
5197         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5198                 return;
5199
5200         hci_dev_lock(hdev);
5201
5202         for (i = 0; i < ev->num; i++) {
5203                 struct extended_inquiry_info *info = &ev->info[i];
5204                 u32 flags;
5205                 bool name_known;
5206
5207                 bacpy(&data.bdaddr, &info->bdaddr);
5208                 data.pscan_rep_mode     = info->pscan_rep_mode;
5209                 data.pscan_period_mode  = info->pscan_period_mode;
5210                 data.pscan_mode         = 0x00;
5211                 memcpy(data.dev_class, info->dev_class, 3);
5212                 data.clock_offset       = info->clock_offset;
5213                 data.rssi               = info->rssi;
5214                 data.ssp_mode           = 0x01;
5215
5216                 if (hci_dev_test_flag(hdev, HCI_MGMT))
5217                         name_known = eir_get_data(info->data,
5218                                                   sizeof(info->data),
5219                                                   EIR_NAME_COMPLETE, NULL);
5220                 else
5221                         name_known = true;
5222
5223                 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5224
5225                 eir_len = eir_get_length(info->data, sizeof(info->data));
5226
5227                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5228                                   info->dev_class, info->rssi,
5229                                   flags, info->data, eir_len, NULL, 0, 0);
5230         }
5231
5232         hci_dev_unlock(hdev);
5233 }
5234
5235 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5236                                          struct sk_buff *skb)
5237 {
5238         struct hci_ev_key_refresh_complete *ev = data;
5239         struct hci_conn *conn;
5240
5241         bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5242                    __le16_to_cpu(ev->handle));
5243
5244         hci_dev_lock(hdev);
5245
5246         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5247         if (!conn)
5248                 goto unlock;
5249
5250         /* For BR/EDR the necessary steps are taken through the
5251          * auth_complete event.
5252          */
5253         if (conn->type != LE_LINK)
5254                 goto unlock;
5255
5256         if (!ev->status)
5257                 conn->sec_level = conn->pending_sec_level;
5258
5259         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5260
5261         if (ev->status && conn->state == BT_CONNECTED) {
5262                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5263                 hci_conn_drop(conn);
5264                 goto unlock;
5265         }
5266
5267         if (conn->state == BT_CONFIG) {
5268                 if (!ev->status)
5269                         conn->state = BT_CONNECTED;
5270
5271                 hci_connect_cfm(conn, ev->status);
5272                 hci_conn_drop(conn);
5273         } else {
5274                 hci_auth_cfm(conn, ev->status);
5275
5276                 hci_conn_hold(conn);
5277                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5278                 hci_conn_drop(conn);
5279         }
5280
5281 unlock:
5282         hci_dev_unlock(hdev);
5283 }
5284
5285 static u8 hci_get_auth_req(struct hci_conn *conn)
5286 {
5287         /* If remote requests no-bonding follow that lead */
5288         if (conn->remote_auth == HCI_AT_NO_BONDING ||
5289             conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5290                 return conn->remote_auth | (conn->auth_type & 0x01);
5291
5292         /* If both remote and local have enough IO capabilities, require
5293          * MITM protection
5294          */
5295         if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5296             conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5297                 return conn->remote_auth | 0x01;
5298
5299         /* No MITM protection possible so ignore remote requirement */
5300         return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5301 }
5302
5303 static u8 bredr_oob_data_present(struct hci_conn *conn)
5304 {
5305         struct hci_dev *hdev = conn->hdev;
5306         struct oob_data *data;
5307
5308         data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5309         if (!data)
5310                 return 0x00;
5311
5312         if (bredr_sc_enabled(hdev)) {
5313                 /* When Secure Connections is enabled, then just
5314                  * return the present value stored with the OOB
5315                  * data. The stored value contains the right present
5316                  * information. However it can only be trusted when
5317                  * not in Secure Connection Only mode.
5318                  */
5319                 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5320                         return data->present;
5321
5322                 /* When Secure Connections Only mode is enabled, then
5323                  * the P-256 values are required. If they are not
5324                  * available, then do not declare that OOB data is
5325                  * present.
5326                  */
5327                 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
5328                     !memcmp(data->hash256, ZERO_KEY, 16))
5329                         return 0x00;
5330
5331                 return 0x02;
5332         }
5333
5334         /* When Secure Connections is not enabled or actually
5335          * not supported by the hardware, then check that if
5336          * P-192 data values are present.
5337          */
5338         if (!memcmp(data->rand192, ZERO_KEY, 16) ||
5339             !memcmp(data->hash192, ZERO_KEY, 16))
5340                 return 0x00;
5341
5342         return 0x01;
5343 }
5344
5345 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5346                                     struct sk_buff *skb)
5347 {
5348         struct hci_ev_io_capa_request *ev = data;
5349         struct hci_conn *conn;
5350
5351         bt_dev_dbg(hdev, "");
5352
5353         hci_dev_lock(hdev);
5354
5355         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5356         if (!conn)
5357                 goto unlock;
5358
5359         hci_conn_hold(conn);
5360
5361         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5362                 goto unlock;
5363
5364         /* Allow pairing if we're pairable, the initiators of the
5365          * pairing or if the remote is not requesting bonding.
5366          */
5367         if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5368             test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5369             (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5370                 struct hci_cp_io_capability_reply cp;
5371
5372                 bacpy(&cp.bdaddr, &ev->bdaddr);
5373                 /* Change the IO capability from KeyboardDisplay
5374                  * to DisplayYesNo as it is not supported by BT spec. */
5375                 cp.capability = (conn->io_capability == 0x04) ?
5376                                 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5377
5378                 /* If we are initiators, there is no remote information yet */
5379                 if (conn->remote_auth == 0xff) {
5380                         /* Request MITM protection if our IO caps allow it
5381                          * except for the no-bonding case.
5382                          */
5383                         if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5384                             conn->auth_type != HCI_AT_NO_BONDING)
5385                                 conn->auth_type |= 0x01;
5386                 } else {
5387                         conn->auth_type = hci_get_auth_req(conn);
5388                 }
5389
5390                 /* If we're not bondable, force one of the non-bondable
5391                  * authentication requirement values.
5392                  */
5393                 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5394                         conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5395
5396                 cp.authentication = conn->auth_type;
5397                 cp.oob_data = bredr_oob_data_present(conn);
5398
5399                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5400                              sizeof(cp), &cp);
5401         } else {
5402                 struct hci_cp_io_capability_neg_reply cp;
5403
5404                 bacpy(&cp.bdaddr, &ev->bdaddr);
5405                 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5406
5407                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5408                              sizeof(cp), &cp);
5409         }
5410
5411 unlock:
5412         hci_dev_unlock(hdev);
5413 }
5414
5415 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5416                                   struct sk_buff *skb)
5417 {
5418         struct hci_ev_io_capa_reply *ev = data;
5419         struct hci_conn *conn;
5420
5421         bt_dev_dbg(hdev, "");
5422
5423         hci_dev_lock(hdev);
5424
5425         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5426         if (!conn)
5427                 goto unlock;
5428
5429         conn->remote_cap = ev->capability;
5430         conn->remote_auth = ev->authentication;
5431
5432 unlock:
5433         hci_dev_unlock(hdev);
5434 }
5435
5436 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5437                                          struct sk_buff *skb)
5438 {
5439         struct hci_ev_user_confirm_req *ev = data;
5440         int loc_mitm, rem_mitm, confirm_hint = 0;
5441         struct hci_conn *conn;
5442
5443         bt_dev_dbg(hdev, "");
5444
5445         hci_dev_lock(hdev);
5446
5447         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5448                 goto unlock;
5449
5450         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5451         if (!conn)
5452                 goto unlock;
5453
5454         loc_mitm = (conn->auth_type & 0x01);
5455         rem_mitm = (conn->remote_auth & 0x01);
5456
5457         /* If we require MITM but the remote device can't provide that
5458          * (it has NoInputNoOutput) then reject the confirmation
5459          * request. We check the security level here since it doesn't
5460          * necessarily match conn->auth_type.
5461          */
5462         if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5463             conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5464                 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5465                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5466                              sizeof(ev->bdaddr), &ev->bdaddr);
5467                 goto unlock;
5468         }
5469
5470         /* If no side requires MITM protection; auto-accept */
5471         if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5472             (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5473
5474                 /* If we're not the initiators request authorization to
5475                  * proceed from user space (mgmt_user_confirm with
5476                  * confirm_hint set to 1). The exception is if neither
5477                  * side had MITM or if the local IO capability is
5478                  * NoInputNoOutput, in which case we do auto-accept
5479                  */
5480                 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5481                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5482                     (loc_mitm || rem_mitm)) {
5483                         bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5484                         confirm_hint = 1;
5485                         goto confirm;
5486                 }
5487
5488                 /* If there already exists link key in local host, leave the
5489                  * decision to user space since the remote device could be
5490                  * legitimate or malicious.
5491                  */
5492                 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5493                         bt_dev_dbg(hdev, "Local host already has link key");
5494                         confirm_hint = 1;
5495                         goto confirm;
5496                 }
5497
5498                 BT_DBG("Auto-accept of user confirmation with %ums delay",
5499                        hdev->auto_accept_delay);
5500
5501                 if (hdev->auto_accept_delay > 0) {
5502                         int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5503                         queue_delayed_work(conn->hdev->workqueue,
5504                                            &conn->auto_accept_work, delay);
5505                         goto unlock;
5506                 }
5507
5508                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5509                              sizeof(ev->bdaddr), &ev->bdaddr);
5510                 goto unlock;
5511         }
5512
5513 confirm:
5514         mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5515                                   le32_to_cpu(ev->passkey), confirm_hint);
5516
5517 unlock:
5518         hci_dev_unlock(hdev);
5519 }
5520
5521 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5522                                          struct sk_buff *skb)
5523 {
5524         struct hci_ev_user_passkey_req *ev = data;
5525
5526         bt_dev_dbg(hdev, "");
5527
5528         if (hci_dev_test_flag(hdev, HCI_MGMT))
5529                 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5530 }
5531
5532 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5533                                         struct sk_buff *skb)
5534 {
5535         struct hci_ev_user_passkey_notify *ev = data;
5536         struct hci_conn *conn;
5537
5538         bt_dev_dbg(hdev, "");
5539
5540         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5541         if (!conn)
5542                 return;
5543
5544         conn->passkey_notify = __le32_to_cpu(ev->passkey);
5545         conn->passkey_entered = 0;
5546
5547         if (hci_dev_test_flag(hdev, HCI_MGMT))
5548                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5549                                          conn->dst_type, conn->passkey_notify,
5550                                          conn->passkey_entered);
5551 }
5552
5553 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5554                                     struct sk_buff *skb)
5555 {
5556         struct hci_ev_keypress_notify *ev = data;
5557         struct hci_conn *conn;
5558
5559         bt_dev_dbg(hdev, "");
5560
5561         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5562         if (!conn)
5563                 return;
5564
5565         switch (ev->type) {
5566         case HCI_KEYPRESS_STARTED:
5567                 conn->passkey_entered = 0;
5568                 return;
5569
5570         case HCI_KEYPRESS_ENTERED:
5571                 conn->passkey_entered++;
5572                 break;
5573
5574         case HCI_KEYPRESS_ERASED:
5575                 conn->passkey_entered--;
5576                 break;
5577
5578         case HCI_KEYPRESS_CLEARED:
5579                 conn->passkey_entered = 0;
5580                 break;
5581
5582         case HCI_KEYPRESS_COMPLETED:
5583                 return;
5584         }
5585
5586         if (hci_dev_test_flag(hdev, HCI_MGMT))
5587                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5588                                          conn->dst_type, conn->passkey_notify,
5589                                          conn->passkey_entered);
5590 }
5591
5592 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5593                                          struct sk_buff *skb)
5594 {
5595         struct hci_ev_simple_pair_complete *ev = data;
5596         struct hci_conn *conn;
5597
5598         bt_dev_dbg(hdev, "");
5599
5600         hci_dev_lock(hdev);
5601
5602         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5603         if (!conn)
5604                 goto unlock;
5605
5606         /* Reset the authentication requirement to unknown */
5607         conn->remote_auth = 0xff;
5608
5609         /* To avoid duplicate auth_failed events to user space we check
5610          * the HCI_CONN_AUTH_PEND flag which will be set if we
5611          * initiated the authentication. A traditional auth_complete
5612          * event gets always produced as initiator and is also mapped to
5613          * the mgmt_auth_failed event */
5614         if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5615                 mgmt_auth_failed(conn, ev->status);
5616
5617         hci_conn_drop(conn);
5618
5619 unlock:
5620         hci_dev_unlock(hdev);
5621 }
5622
5623 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5624                                          struct sk_buff *skb)
5625 {
5626         struct hci_ev_remote_host_features *ev = data;
5627         struct inquiry_entry *ie;
5628         struct hci_conn *conn;
5629
5630         bt_dev_dbg(hdev, "");
5631
5632         hci_dev_lock(hdev);
5633
5634         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5635         if (conn)
5636                 memcpy(conn->features[1], ev->features, 8);
5637
5638         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5639         if (ie)
5640                 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5641
5642         hci_dev_unlock(hdev);
5643 }
5644
5645 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5646                                             struct sk_buff *skb)
5647 {
5648         struct hci_ev_remote_oob_data_request *ev = edata;
5649         struct oob_data *data;
5650
5651         bt_dev_dbg(hdev, "");
5652
5653         hci_dev_lock(hdev);
5654
5655         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5656                 goto unlock;
5657
5658         data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5659         if (!data) {
5660                 struct hci_cp_remote_oob_data_neg_reply cp;
5661
5662                 bacpy(&cp.bdaddr, &ev->bdaddr);
5663                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5664                              sizeof(cp), &cp);
5665                 goto unlock;
5666         }
5667
5668         if (bredr_sc_enabled(hdev)) {
5669                 struct hci_cp_remote_oob_ext_data_reply cp;
5670
5671                 bacpy(&cp.bdaddr, &ev->bdaddr);
5672                 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5673                         memset(cp.hash192, 0, sizeof(cp.hash192));
5674                         memset(cp.rand192, 0, sizeof(cp.rand192));
5675                 } else {
5676                         memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5677                         memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5678                 }
5679                 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5680                 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5681
5682                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5683                              sizeof(cp), &cp);
5684         } else {
5685                 struct hci_cp_remote_oob_data_reply cp;
5686
5687                 bacpy(&cp.bdaddr, &ev->bdaddr);
5688                 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5689                 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5690
5691                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5692                              sizeof(cp), &cp);
5693         }
5694
5695 unlock:
5696         hci_dev_unlock(hdev);
5697 }
5698
5699 #if IS_ENABLED(CONFIG_BT_HS)
5700 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5701                                   struct sk_buff *skb)
5702 {
5703         struct hci_ev_channel_selected *ev = data;
5704         struct hci_conn *hcon;
5705
5706         bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5707
5708         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5709         if (!hcon)
5710                 return;
5711
5712         amp_read_loc_assoc_final_data(hdev, hcon);
5713 }
5714
5715 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5716                                       struct sk_buff *skb)
5717 {
5718         struct hci_ev_phy_link_complete *ev = data;
5719         struct hci_conn *hcon, *bredr_hcon;
5720
5721         bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5722                    ev->status);
5723
5724         hci_dev_lock(hdev);
5725
5726         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5727         if (!hcon)
5728                 goto unlock;
5729
5730         if (!hcon->amp_mgr)
5731                 goto unlock;
5732
5733         if (ev->status) {
5734                 hci_conn_del(hcon);
5735                 goto unlock;
5736         }
5737
5738         bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5739
5740         hcon->state = BT_CONNECTED;
5741         bacpy(&hcon->dst, &bredr_hcon->dst);
5742
5743         hci_conn_hold(hcon);
5744         hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5745         hci_conn_drop(hcon);
5746
5747         hci_debugfs_create_conn(hcon);
5748         hci_conn_add_sysfs(hcon);
5749
5750         amp_physical_cfm(bredr_hcon, hcon);
5751
5752 unlock:
5753         hci_dev_unlock(hdev);
5754 }
5755
5756 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5757                                      struct sk_buff *skb)
5758 {
5759         struct hci_ev_logical_link_complete *ev = data;
5760         struct hci_conn *hcon;
5761         struct hci_chan *hchan;
5762         struct amp_mgr *mgr;
5763
5764         bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5765                    le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5766
5767         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5768         if (!hcon)
5769                 return;
5770
5771         /* Create AMP hchan */
5772         hchan = hci_chan_create(hcon);
5773         if (!hchan)
5774                 return;
5775
5776         hchan->handle = le16_to_cpu(ev->handle);
5777         hchan->amp = true;
5778
5779         BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5780
5781         mgr = hcon->amp_mgr;
5782         if (mgr && mgr->bredr_chan) {
5783                 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5784
5785                 l2cap_chan_lock(bredr_chan);
5786
5787                 bredr_chan->conn->mtu = hdev->block_mtu;
5788                 l2cap_logical_cfm(bredr_chan, hchan, 0);
5789                 hci_conn_hold(hcon);
5790
5791                 l2cap_chan_unlock(bredr_chan);
5792         }
5793 }
5794
5795 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5796                                              struct sk_buff *skb)
5797 {
5798         struct hci_ev_disconn_logical_link_complete *ev = data;
5799         struct hci_chan *hchan;
5800
5801         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5802                    le16_to_cpu(ev->handle), ev->status);
5803
5804         if (ev->status)
5805                 return;
5806
5807         hci_dev_lock(hdev);
5808
5809         hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5810         if (!hchan || !hchan->amp)
5811                 goto unlock;
5812
5813         amp_destroy_logical_link(hchan, ev->reason);
5814
5815 unlock:
5816         hci_dev_unlock(hdev);
5817 }
5818
5819 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5820                                              struct sk_buff *skb)
5821 {
5822         struct hci_ev_disconn_phy_link_complete *ev = data;
5823         struct hci_conn *hcon;
5824
5825         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5826
5827         if (ev->status)
5828                 return;
5829
5830         hci_dev_lock(hdev);
5831
5832         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5833         if (hcon && hcon->type == AMP_LINK) {
5834                 hcon->state = BT_CLOSED;
5835                 hci_disconn_cfm(hcon, ev->reason);
5836                 hci_conn_del(hcon);
5837         }
5838
5839         hci_dev_unlock(hdev);
5840 }
5841 #endif
5842
5843 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5844                                 u8 bdaddr_type, bdaddr_t *local_rpa)
5845 {
5846         if (conn->out) {
5847                 conn->dst_type = bdaddr_type;
5848                 conn->resp_addr_type = bdaddr_type;
5849                 bacpy(&conn->resp_addr, bdaddr);
5850
5851                 /* Check if the controller has set a Local RPA then it must be
5852                  * used instead or hdev->rpa.
5853                  */
5854                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5855                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5856                         bacpy(&conn->init_addr, local_rpa);
5857                 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5858                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5859                         bacpy(&conn->init_addr, &conn->hdev->rpa);
5860                 } else {
5861                         hci_copy_identity_address(conn->hdev, &conn->init_addr,
5862                                                   &conn->init_addr_type);
5863                 }
5864         } else {
5865                 conn->resp_addr_type = conn->hdev->adv_addr_type;
5866                 /* Check if the controller has set a Local RPA then it must be
5867                  * used instead or hdev->rpa.
5868                  */
5869                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5870                         conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5871                         bacpy(&conn->resp_addr, local_rpa);
5872                 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5873                         /* In case of ext adv, resp_addr will be updated in
5874                          * Adv Terminated event.
5875                          */
5876                         if (!ext_adv_capable(conn->hdev))
5877                                 bacpy(&conn->resp_addr,
5878                                       &conn->hdev->random_addr);
5879                 } else {
5880                         bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5881                 }
5882
5883                 conn->init_addr_type = bdaddr_type;
5884                 bacpy(&conn->init_addr, bdaddr);
5885
5886                 /* For incoming connections, set the default minimum
5887                  * and maximum connection interval. They will be used
5888                  * to check if the parameters are in range and if not
5889                  * trigger the connection update procedure.
5890                  */
5891                 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5892                 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5893         }
5894 }
5895
5896 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5897                                  bdaddr_t *bdaddr, u8 bdaddr_type,
5898                                  bdaddr_t *local_rpa, u8 role, u16 handle,
5899                                  u16 interval, u16 latency,
5900                                  u16 supervision_timeout)
5901 {
5902         struct hci_conn_params *params;
5903         struct hci_conn *conn;
5904         struct smp_irk *irk;
5905         u8 addr_type;
5906
5907         hci_dev_lock(hdev);
5908
5909         /* All controllers implicitly stop advertising in the event of a
5910          * connection, so ensure that the state bit is cleared.
5911          */
5912         hci_dev_clear_flag(hdev, HCI_LE_ADV);
5913
5914         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
5915         if (!conn) {
5916                 /* In case of error status and there is no connection pending
5917                  * just unlock as there is nothing to cleanup.
5918                  */
5919                 if (status)
5920                         goto unlock;
5921
5922                 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role);
5923                 if (!conn) {
5924                         bt_dev_err(hdev, "no memory for new connection");
5925                         goto unlock;
5926                 }
5927
5928                 conn->dst_type = bdaddr_type;
5929
5930                 /* If we didn't have a hci_conn object previously
5931                  * but we're in central role this must be something
5932                  * initiated using an accept list. Since accept list based
5933                  * connections are not "first class citizens" we don't
5934                  * have full tracking of them. Therefore, we go ahead
5935                  * with a "best effort" approach of determining the
5936                  * initiator address based on the HCI_PRIVACY flag.
5937                  */
5938                 if (conn->out) {
5939                         conn->resp_addr_type = bdaddr_type;
5940                         bacpy(&conn->resp_addr, bdaddr);
5941                         if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5942                                 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5943                                 bacpy(&conn->init_addr, &hdev->rpa);
5944                         } else {
5945                                 hci_copy_identity_address(hdev,
5946                                                           &conn->init_addr,
5947                                                           &conn->init_addr_type);
5948                         }
5949                 }
5950         } else {
5951                 cancel_delayed_work(&conn->le_conn_timeout);
5952         }
5953
5954         /* The HCI_LE_Connection_Complete event is only sent once per connection.
5955          * Processing it more than once per connection can corrupt kernel memory.
5956          *
5957          * As the connection handle is set here for the first time, it indicates
5958          * whether the connection is already set up.
5959          */
5960         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
5961                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
5962                 goto unlock;
5963         }
5964
5965         le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
5966
5967         /* Lookup the identity address from the stored connection
5968          * address and address type.
5969          *
5970          * When establishing connections to an identity address, the
5971          * connection procedure will store the resolvable random
5972          * address first. Now if it can be converted back into the
5973          * identity address, start using the identity address from
5974          * now on.
5975          */
5976         irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
5977         if (irk) {
5978                 bacpy(&conn->dst, &irk->bdaddr);
5979                 conn->dst_type = irk->addr_type;
5980         }
5981
5982         conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
5983
5984         if (handle > HCI_CONN_HANDLE_MAX) {
5985                 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle,
5986                            HCI_CONN_HANDLE_MAX);
5987                 status = HCI_ERROR_INVALID_PARAMETERS;
5988         }
5989
5990         /* All connection failure handling is taken care of by the
5991          * hci_conn_failed function which is triggered by the HCI
5992          * request completion callbacks used for connecting.
5993          */
5994         if (status)
5995                 goto unlock;
5996
5997         /* Drop the connection if it has been aborted */
5998         if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
5999                 hci_conn_drop(conn);
6000                 goto unlock;
6001         }
6002
6003         if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
6004                 addr_type = BDADDR_LE_PUBLIC;
6005         else
6006                 addr_type = BDADDR_LE_RANDOM;
6007
6008         /* Drop the connection if the device is blocked */
6009         if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
6010                 hci_conn_drop(conn);
6011                 goto unlock;
6012         }
6013
6014         if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
6015                 mgmt_device_connected(hdev, conn, NULL, 0);
6016
6017         conn->sec_level = BT_SECURITY_LOW;
6018         conn->handle = handle;
6019         conn->state = BT_CONFIG;
6020
6021         /* Store current advertising instance as connection advertising instance
6022          * when sotfware rotation is in use so it can be re-enabled when
6023          * disconnected.
6024          */
6025         if (!ext_adv_capable(hdev))
6026                 conn->adv_instance = hdev->cur_adv_instance;
6027
6028         conn->le_conn_interval = interval;
6029         conn->le_conn_latency = latency;
6030         conn->le_supv_timeout = supervision_timeout;
6031
6032         hci_debugfs_create_conn(conn);
6033         hci_conn_add_sysfs(conn);
6034
6035         /* The remote features procedure is defined for central
6036          * role only. So only in case of an initiated connection
6037          * request the remote features.
6038          *
6039          * If the local controller supports peripheral-initiated features
6040          * exchange, then requesting the remote features in peripheral
6041          * role is possible. Otherwise just transition into the
6042          * connected state without requesting the remote features.
6043          */
6044         if (conn->out ||
6045             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
6046                 struct hci_cp_le_read_remote_features cp;
6047
6048                 cp.handle = __cpu_to_le16(conn->handle);
6049
6050                 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
6051                              sizeof(cp), &cp);
6052
6053                 hci_conn_hold(conn);
6054         } else {
6055                 conn->state = BT_CONNECTED;
6056                 hci_connect_cfm(conn, status);
6057         }
6058
6059         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
6060                                            conn->dst_type);
6061         if (params) {
6062                 list_del_init(&params->action);
6063                 if (params->conn) {
6064                         hci_conn_drop(params->conn);
6065                         hci_conn_put(params->conn);
6066                         params->conn = NULL;
6067                 }
6068         }
6069
6070 unlock:
6071         hci_update_passive_scan(hdev);
6072         hci_dev_unlock(hdev);
6073 }
6074
6075 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
6076                                      struct sk_buff *skb)
6077 {
6078         struct hci_ev_le_conn_complete *ev = data;
6079
6080         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6081
6082         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6083                              NULL, ev->role, le16_to_cpu(ev->handle),
6084                              le16_to_cpu(ev->interval),
6085                              le16_to_cpu(ev->latency),
6086                              le16_to_cpu(ev->supervision_timeout));
6087 }
6088
6089 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
6090                                          struct sk_buff *skb)
6091 {
6092         struct hci_ev_le_enh_conn_complete *ev = data;
6093
6094         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6095
6096         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6097                              &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
6098                              le16_to_cpu(ev->interval),
6099                              le16_to_cpu(ev->latency),
6100                              le16_to_cpu(ev->supervision_timeout));
6101 }
6102
6103 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6104                                     struct sk_buff *skb)
6105 {
6106         struct hci_evt_le_ext_adv_set_term *ev = data;
6107         struct hci_conn *conn;
6108         struct adv_info *adv, *n;
6109
6110         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6111
6112         /* The Bluetooth Core 5.3 specification clearly states that this event
6113          * shall not be sent when the Host disables the advertising set. So in
6114          * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6115          *
6116          * When the Host disables an advertising set, all cleanup is done via
6117          * its command callback and not needed to be duplicated here.
6118          */
6119         if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6120                 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6121                 return;
6122         }
6123
6124         hci_dev_lock(hdev);
6125
6126         adv = hci_find_adv_instance(hdev, ev->handle);
6127
6128         if (ev->status) {
6129                 if (!adv)
6130                         goto unlock;
6131
6132                 /* Remove advertising as it has been terminated */
6133                 hci_remove_adv_instance(hdev, ev->handle);
6134                 mgmt_advertising_removed(NULL, hdev, ev->handle);
6135
6136                 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6137                         if (adv->enabled)
6138                                 goto unlock;
6139                 }
6140
6141                 /* We are no longer advertising, clear HCI_LE_ADV */
6142                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6143                 goto unlock;
6144         }
6145
6146         if (adv)
6147                 adv->enabled = false;
6148
6149         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6150         if (conn) {
6151                 /* Store handle in the connection so the correct advertising
6152                  * instance can be re-enabled when disconnected.
6153                  */
6154                 conn->adv_instance = ev->handle;
6155
6156                 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6157                     bacmp(&conn->resp_addr, BDADDR_ANY))
6158                         goto unlock;
6159
6160                 if (!ev->handle) {
6161                         bacpy(&conn->resp_addr, &hdev->random_addr);
6162                         goto unlock;
6163                 }
6164
6165                 if (adv)
6166                         bacpy(&conn->resp_addr, &adv->random_addr);
6167         }
6168
6169 unlock:
6170         hci_dev_unlock(hdev);
6171 }
6172
6173 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6174                                             struct sk_buff *skb)
6175 {
6176         struct hci_ev_le_conn_update_complete *ev = data;
6177         struct hci_conn *conn;
6178
6179         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6180
6181         if (ev->status)
6182                 return;
6183
6184         hci_dev_lock(hdev);
6185
6186         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6187         if (conn) {
6188 #ifdef TIZEN_BT
6189                 if (ev->status) {
6190                         hci_dev_unlock(hdev);
6191                         mgmt_le_conn_update_failed(hdev, &conn->dst,
6192                                 conn->type, conn->dst_type, ev->status);
6193                         return;
6194                 }
6195 #endif
6196                 conn->le_conn_interval = le16_to_cpu(ev->interval);
6197                 conn->le_conn_latency = le16_to_cpu(ev->latency);
6198                 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6199         }
6200
6201         hci_dev_unlock(hdev);
6202
6203 #ifdef TIZEN_BT
6204         mgmt_le_conn_updated(hdev, &conn->dst, conn->type,
6205                                 conn->dst_type, conn->le_conn_interval,
6206                                 conn->le_conn_latency, conn->le_supv_timeout);
6207 #endif
6208 }
6209
6210 /* This function requires the caller holds hdev->lock */
6211 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6212                                               bdaddr_t *addr,
6213                                               u8 addr_type, bool addr_resolved,
6214                                               u8 adv_type)
6215 {
6216         struct hci_conn *conn;
6217         struct hci_conn_params *params;
6218
6219         /* If the event is not connectable don't proceed further */
6220         if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6221                 return NULL;
6222
6223         /* Ignore if the device is blocked or hdev is suspended */
6224         if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6225             hdev->suspended)
6226                 return NULL;
6227
6228         /* Most controller will fail if we try to create new connections
6229          * while we have an existing one in peripheral role.
6230          */
6231         if (hdev->conn_hash.le_num_peripheral > 0 &&
6232             (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6233              !(hdev->le_states[3] & 0x10)))
6234                 return NULL;
6235
6236         /* If we're not connectable only connect devices that we have in
6237          * our pend_le_conns list.
6238          */
6239         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6240                                            addr_type);
6241         if (!params)
6242                 return NULL;
6243
6244         if (!params->explicit_connect) {
6245                 switch (params->auto_connect) {
6246                 case HCI_AUTO_CONN_DIRECT:
6247                         /* Only devices advertising with ADV_DIRECT_IND are
6248                          * triggering a connection attempt. This is allowing
6249                          * incoming connections from peripheral devices.
6250                          */
6251                         if (adv_type != LE_ADV_DIRECT_IND)
6252                                 return NULL;
6253                         break;
6254                 case HCI_AUTO_CONN_ALWAYS:
6255                         /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6256                          * are triggering a connection attempt. This means
6257                          * that incoming connections from peripheral device are
6258                          * accepted and also outgoing connections to peripheral
6259                          * devices are established when found.
6260                          */
6261                         break;
6262                 default:
6263                         return NULL;
6264                 }
6265         }
6266
6267         conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6268                               BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6269                               HCI_ROLE_MASTER);
6270         if (!IS_ERR(conn)) {
6271                 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6272                  * by higher layer that tried to connect, if no then
6273                  * store the pointer since we don't really have any
6274                  * other owner of the object besides the params that
6275                  * triggered it. This way we can abort the connection if
6276                  * the parameters get removed and keep the reference
6277                  * count consistent once the connection is established.
6278                  */
6279
6280                 if (!params->explicit_connect)
6281                         params->conn = hci_conn_get(conn);
6282
6283                 return conn;
6284         }
6285
6286         switch (PTR_ERR(conn)) {
6287         case -EBUSY:
6288                 /* If hci_connect() returns -EBUSY it means there is already
6289                  * an LE connection attempt going on. Since controllers don't
6290                  * support more than one connection attempt at the time, we
6291                  * don't consider this an error case.
6292                  */
6293                 break;
6294         default:
6295                 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6296                 return NULL;
6297         }
6298
6299         return NULL;
6300 }
6301
6302 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6303                                u8 bdaddr_type, bdaddr_t *direct_addr,
6304                                u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6305                                bool ext_adv, bool ctl_time, u64 instant)
6306 {
6307         struct discovery_state *d = &hdev->discovery;
6308         struct smp_irk *irk;
6309         struct hci_conn *conn;
6310         bool match, bdaddr_resolved;
6311         u32 flags;
6312         u8 *ptr;
6313
6314         switch (type) {
6315         case LE_ADV_IND:
6316         case LE_ADV_DIRECT_IND:
6317         case LE_ADV_SCAN_IND:
6318         case LE_ADV_NONCONN_IND:
6319         case LE_ADV_SCAN_RSP:
6320                 break;
6321         default:
6322                 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6323                                        "type: 0x%02x", type);
6324                 return;
6325         }
6326
6327         if (!ext_adv && len > HCI_MAX_AD_LENGTH) {
6328                 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes");
6329                 return;
6330         }
6331
6332         /* Find the end of the data in case the report contains padded zero
6333          * bytes at the end causing an invalid length value.
6334          *
6335          * When data is NULL, len is 0 so there is no need for extra ptr
6336          * check as 'ptr < data + 0' is already false in such case.
6337          */
6338         for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6339                 if (ptr + 1 + *ptr > data + len)
6340                         break;
6341         }
6342
6343         /* Adjust for actual length. This handles the case when remote
6344          * device is advertising with incorrect data length.
6345          */
6346         len = ptr - data;
6347
6348         /* If the direct address is present, then this report is from
6349          * a LE Direct Advertising Report event. In that case it is
6350          * important to see if the address is matching the local
6351          * controller address.
6352          */
6353         if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6354                 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6355                                                   &bdaddr_resolved);
6356
6357                 /* Only resolvable random addresses are valid for these
6358                  * kind of reports and others can be ignored.
6359                  */
6360                 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6361                         return;
6362
6363                 /* If the controller is not using resolvable random
6364                  * addresses, then this report can be ignored.
6365                  */
6366                 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6367                         return;
6368
6369                 /* If the local IRK of the controller does not match
6370                  * with the resolvable random address provided, then
6371                  * this report can be ignored.
6372                  */
6373                 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6374                         return;
6375         }
6376
6377         /* Check if we need to convert to identity address */
6378         irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6379         if (irk) {
6380                 bdaddr = &irk->bdaddr;
6381                 bdaddr_type = irk->addr_type;
6382         }
6383
6384         bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6385
6386         /* Check if we have been requested to connect to this device.
6387          *
6388          * direct_addr is set only for directed advertising reports (it is NULL
6389          * for advertising reports) and is already verified to be RPA above.
6390          */
6391         conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6392                                      type);
6393         if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) {
6394                 /* Store report for later inclusion by
6395                  * mgmt_device_connected
6396                  */
6397                 memcpy(conn->le_adv_data, data, len);
6398                 conn->le_adv_data_len = len;
6399         }
6400
6401         if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6402                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6403         else
6404                 flags = 0;
6405
6406         /* All scan results should be sent up for Mesh systems */
6407         if (hci_dev_test_flag(hdev, HCI_MESH)) {
6408                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6409                                   rssi, flags, data, len, NULL, 0, instant);
6410                 return;
6411         }
6412
6413         /* Passive scanning shouldn't trigger any device found events,
6414          * except for devices marked as CONN_REPORT for which we do send
6415          * device found events, or advertisement monitoring requested.
6416          */
6417         if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6418                 if (type == LE_ADV_DIRECT_IND)
6419                         return;
6420
6421                 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6422                                                bdaddr, bdaddr_type) &&
6423                     idr_is_empty(&hdev->adv_monitors_idr))
6424                         return;
6425
6426                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6427                                   rssi, flags, data, len, NULL, 0, 0);
6428                 return;
6429         }
6430
6431         /* When receiving a scan response, then there is no way to
6432          * know if the remote device is connectable or not. However
6433          * since scan responses are merged with a previously seen
6434          * advertising report, the flags field from that report
6435          * will be used.
6436          *
6437          * In the unlikely case that a controller just sends a scan
6438          * response event that doesn't match the pending report, then
6439          * it is marked as a standalone SCAN_RSP.
6440          */
6441         if (type == LE_ADV_SCAN_RSP)
6442                 flags = MGMT_DEV_FOUND_SCAN_RSP;
6443
6444         /* If there's nothing pending either store the data from this
6445          * event or send an immediate device found event if the data
6446          * should not be stored for later.
6447          */
6448         if (!ext_adv && !has_pending_adv_report(hdev)) {
6449                 /* If the report will trigger a SCAN_REQ store it for
6450                  * later merging.
6451                  */
6452                 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6453                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6454                                                  rssi, flags, data, len);
6455                         return;
6456                 }
6457
6458                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6459                                   rssi, flags, data, len, NULL, 0, 0);
6460                 return;
6461         }
6462
6463         /* Check if the pending report is for the same device as the new one */
6464         match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6465                  bdaddr_type == d->last_adv_addr_type);
6466
6467         /* If the pending data doesn't match this report or this isn't a
6468          * scan response (e.g. we got a duplicate ADV_IND) then force
6469          * sending of the pending data.
6470          */
6471         if (type != LE_ADV_SCAN_RSP || !match) {
6472                 /* Send out whatever is in the cache, but skip duplicates */
6473                 if (!match)
6474                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6475                                           d->last_adv_addr_type, NULL,
6476                                           d->last_adv_rssi, d->last_adv_flags,
6477                                           d->last_adv_data,
6478                                           d->last_adv_data_len, NULL, 0, 0);
6479
6480                 /* If the new report will trigger a SCAN_REQ store it for
6481                  * later merging.
6482                  */
6483                 if (!ext_adv && (type == LE_ADV_IND ||
6484                                  type == LE_ADV_SCAN_IND)) {
6485                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6486                                                  rssi, flags, data, len);
6487                         return;
6488                 }
6489
6490                 /* The advertising reports cannot be merged, so clear
6491                  * the pending report and send out a device found event.
6492                  */
6493                 clear_pending_adv_report(hdev);
6494                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6495                                   rssi, flags, data, len, NULL, 0, 0);
6496                 return;
6497         }
6498
6499         /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6500          * the new event is a SCAN_RSP. We can therefore proceed with
6501          * sending a merged device found event.
6502          */
6503         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6504                           d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6505                           d->last_adv_data, d->last_adv_data_len, data, len, 0);
6506         clear_pending_adv_report(hdev);
6507 }
6508
6509 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6510                                   struct sk_buff *skb)
6511 {
6512         struct hci_ev_le_advertising_report *ev = data;
6513         u64 instant = jiffies;
6514
6515         if (!ev->num)
6516                 return;
6517
6518         hci_dev_lock(hdev);
6519
6520         while (ev->num--) {
6521                 struct hci_ev_le_advertising_info *info;
6522                 s8 rssi;
6523
6524                 info = hci_le_ev_skb_pull(hdev, skb,
6525                                           HCI_EV_LE_ADVERTISING_REPORT,
6526                                           sizeof(*info));
6527                 if (!info)
6528                         break;
6529
6530                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6531                                         info->length + 1))
6532                         break;
6533
6534                 if (info->length <= HCI_MAX_AD_LENGTH) {
6535                         rssi = info->data[info->length];
6536                         process_adv_report(hdev, info->type, &info->bdaddr,
6537                                            info->bdaddr_type, NULL, 0, rssi,
6538                                            info->data, info->length, false,
6539                                            false, instant);
6540                 } else {
6541                         bt_dev_err(hdev, "Dropping invalid advertising data");
6542                 }
6543         }
6544
6545         hci_dev_unlock(hdev);
6546 }
6547
6548 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6549 {
6550         if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6551                 switch (evt_type) {
6552                 case LE_LEGACY_ADV_IND:
6553                         return LE_ADV_IND;
6554                 case LE_LEGACY_ADV_DIRECT_IND:
6555                         return LE_ADV_DIRECT_IND;
6556                 case LE_LEGACY_ADV_SCAN_IND:
6557                         return LE_ADV_SCAN_IND;
6558                 case LE_LEGACY_NONCONN_IND:
6559                         return LE_ADV_NONCONN_IND;
6560                 case LE_LEGACY_SCAN_RSP_ADV:
6561                 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6562                         return LE_ADV_SCAN_RSP;
6563                 }
6564
6565                 goto invalid;
6566         }
6567
6568         if (evt_type & LE_EXT_ADV_CONN_IND) {
6569                 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6570                         return LE_ADV_DIRECT_IND;
6571
6572                 return LE_ADV_IND;
6573         }
6574
6575         if (evt_type & LE_EXT_ADV_SCAN_RSP)
6576                 return LE_ADV_SCAN_RSP;
6577
6578         if (evt_type & LE_EXT_ADV_SCAN_IND)
6579                 return LE_ADV_SCAN_IND;
6580
6581         if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6582             evt_type & LE_EXT_ADV_DIRECT_IND)
6583                 return LE_ADV_NONCONN_IND;
6584
6585 invalid:
6586         bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6587                                evt_type);
6588
6589         return LE_ADV_INVALID;
6590 }
6591
6592 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6593                                       struct sk_buff *skb)
6594 {
6595         struct hci_ev_le_ext_adv_report *ev = data;
6596         u64 instant = jiffies;
6597
6598         if (!ev->num)
6599                 return;
6600
6601         hci_dev_lock(hdev);
6602
6603         while (ev->num--) {
6604                 struct hci_ev_le_ext_adv_info *info;
6605                 u8 legacy_evt_type;
6606                 u16 evt_type;
6607
6608                 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6609                                           sizeof(*info));
6610                 if (!info)
6611                         break;
6612
6613                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6614                                         info->length))
6615                         break;
6616
6617                 evt_type = __le16_to_cpu(info->type);
6618                 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6619                 if (legacy_evt_type != LE_ADV_INVALID) {
6620                         process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6621                                            info->bdaddr_type, NULL, 0,
6622                                            info->rssi, info->data, info->length,
6623                                            !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6624                                            false, instant);
6625                 }
6626         }
6627
6628         hci_dev_unlock(hdev);
6629 }
6630
6631 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6632 {
6633         struct hci_cp_le_pa_term_sync cp;
6634
6635         memset(&cp, 0, sizeof(cp));
6636         cp.handle = handle;
6637
6638         return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6639 }
6640
6641 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6642                                             struct sk_buff *skb)
6643 {
6644         struct hci_ev_le_pa_sync_established *ev = data;
6645         int mask = hdev->link_mode;
6646         __u8 flags = 0;
6647
6648         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6649
6650         if (ev->status)
6651                 return;
6652
6653         hci_dev_lock(hdev);
6654
6655         hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6656
6657         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6658         if (!(mask & HCI_LM_ACCEPT))
6659                 hci_le_pa_term_sync(hdev, ev->handle);
6660
6661         hci_dev_unlock(hdev);
6662 }
6663
6664 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6665                                             struct sk_buff *skb)
6666 {
6667         struct hci_ev_le_remote_feat_complete *ev = data;
6668         struct hci_conn *conn;
6669
6670         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6671
6672         hci_dev_lock(hdev);
6673
6674         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6675         if (conn) {
6676                 if (!ev->status)
6677                         memcpy(conn->features[0], ev->features, 8);
6678
6679                 if (conn->state == BT_CONFIG) {
6680                         __u8 status;
6681
6682                         /* If the local controller supports peripheral-initiated
6683                          * features exchange, but the remote controller does
6684                          * not, then it is possible that the error code 0x1a
6685                          * for unsupported remote feature gets returned.
6686                          *
6687                          * In this specific case, allow the connection to
6688                          * transition into connected state and mark it as
6689                          * successful.
6690                          */
6691                         if (!conn->out && ev->status == 0x1a &&
6692                             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6693                                 status = 0x00;
6694                         else
6695                                 status = ev->status;
6696
6697                         conn->state = BT_CONNECTED;
6698                         hci_connect_cfm(conn, status);
6699                         hci_conn_drop(conn);
6700                 }
6701         }
6702
6703         hci_dev_unlock(hdev);
6704 }
6705
6706 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6707                                    struct sk_buff *skb)
6708 {
6709         struct hci_ev_le_ltk_req *ev = data;
6710         struct hci_cp_le_ltk_reply cp;
6711         struct hci_cp_le_ltk_neg_reply neg;
6712         struct hci_conn *conn;
6713         struct smp_ltk *ltk;
6714
6715         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6716
6717         hci_dev_lock(hdev);
6718
6719         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6720         if (conn == NULL)
6721                 goto not_found;
6722
6723         ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6724         if (!ltk)
6725                 goto not_found;
6726
6727         if (smp_ltk_is_sc(ltk)) {
6728                 /* With SC both EDiv and Rand are set to zero */
6729                 if (ev->ediv || ev->rand)
6730                         goto not_found;
6731         } else {
6732                 /* For non-SC keys check that EDiv and Rand match */
6733                 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6734                         goto not_found;
6735         }
6736
6737         memcpy(cp.ltk, ltk->val, ltk->enc_size);
6738         memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6739         cp.handle = cpu_to_le16(conn->handle);
6740
6741         conn->pending_sec_level = smp_ltk_sec_level(ltk);
6742
6743         conn->enc_key_size = ltk->enc_size;
6744
6745         hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6746
6747         /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6748          * temporary key used to encrypt a connection following
6749          * pairing. It is used during the Encrypted Session Setup to
6750          * distribute the keys. Later, security can be re-established
6751          * using a distributed LTK.
6752          */
6753         if (ltk->type == SMP_STK) {
6754                 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6755                 list_del_rcu(&ltk->list);
6756                 kfree_rcu(ltk, rcu);
6757         } else {
6758                 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6759         }
6760
6761         hci_dev_unlock(hdev);
6762
6763         return;
6764
6765 not_found:
6766         neg.handle = ev->handle;
6767         hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6768         hci_dev_unlock(hdev);
6769 }
6770
6771 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6772                                       u8 reason)
6773 {
6774         struct hci_cp_le_conn_param_req_neg_reply cp;
6775
6776         cp.handle = cpu_to_le16(handle);
6777         cp.reason = reason;
6778
6779         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6780                      &cp);
6781 }
6782
6783 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6784                                              struct sk_buff *skb)
6785 {
6786         struct hci_ev_le_remote_conn_param_req *ev = data;
6787         struct hci_cp_le_conn_param_req_reply cp;
6788         struct hci_conn *hcon;
6789         u16 handle, min, max, latency, timeout;
6790
6791         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6792
6793         handle = le16_to_cpu(ev->handle);
6794         min = le16_to_cpu(ev->interval_min);
6795         max = le16_to_cpu(ev->interval_max);
6796         latency = le16_to_cpu(ev->latency);
6797         timeout = le16_to_cpu(ev->timeout);
6798
6799         hcon = hci_conn_hash_lookup_handle(hdev, handle);
6800         if (!hcon || hcon->state != BT_CONNECTED)
6801                 return send_conn_param_neg_reply(hdev, handle,
6802                                                  HCI_ERROR_UNKNOWN_CONN_ID);
6803
6804         if (hci_check_conn_params(min, max, latency, timeout))
6805                 return send_conn_param_neg_reply(hdev, handle,
6806                                                  HCI_ERROR_INVALID_LL_PARAMS);
6807
6808         if (hcon->role == HCI_ROLE_MASTER) {
6809                 struct hci_conn_params *params;
6810                 u8 store_hint;
6811
6812                 hci_dev_lock(hdev);
6813
6814                 params = hci_conn_params_lookup(hdev, &hcon->dst,
6815                                                 hcon->dst_type);
6816                 if (params) {
6817                         params->conn_min_interval = min;
6818                         params->conn_max_interval = max;
6819                         params->conn_latency = latency;
6820                         params->supervision_timeout = timeout;
6821                         store_hint = 0x01;
6822                 } else {
6823                         store_hint = 0x00;
6824                 }
6825
6826                 hci_dev_unlock(hdev);
6827
6828                 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6829                                     store_hint, min, max, latency, timeout);
6830         }
6831
6832         cp.handle = ev->handle;
6833         cp.interval_min = ev->interval_min;
6834         cp.interval_max = ev->interval_max;
6835         cp.latency = ev->latency;
6836         cp.timeout = ev->timeout;
6837         cp.min_ce_len = 0;
6838         cp.max_ce_len = 0;
6839
6840         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6841 }
6842
6843 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6844                                          struct sk_buff *skb)
6845 {
6846         struct hci_ev_le_direct_adv_report *ev = data;
6847         u64 instant = jiffies;
6848         int i;
6849
6850         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6851                                 flex_array_size(ev, info, ev->num)))
6852                 return;
6853
6854         if (!ev->num)
6855                 return;
6856
6857         hci_dev_lock(hdev);
6858
6859         for (i = 0; i < ev->num; i++) {
6860                 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6861
6862                 process_adv_report(hdev, info->type, &info->bdaddr,
6863                                    info->bdaddr_type, &info->direct_addr,
6864                                    info->direct_addr_type, info->rssi, NULL, 0,
6865                                    false, false, instant);
6866         }
6867
6868         hci_dev_unlock(hdev);
6869 }
6870
6871 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6872                                   struct sk_buff *skb)
6873 {
6874         struct hci_ev_le_phy_update_complete *ev = data;
6875         struct hci_conn *conn;
6876
6877         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6878
6879         if (ev->status)
6880                 return;
6881
6882         hci_dev_lock(hdev);
6883
6884         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6885         if (!conn)
6886                 goto unlock;
6887
6888         conn->le_tx_phy = ev->tx_phy;
6889         conn->le_rx_phy = ev->rx_phy;
6890
6891 unlock:
6892         hci_dev_unlock(hdev);
6893 }
6894
6895 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
6896                                         struct sk_buff *skb)
6897 {
6898         struct hci_evt_le_cis_established *ev = data;
6899         struct hci_conn *conn;
6900         u16 handle = __le16_to_cpu(ev->handle);
6901
6902         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6903
6904         hci_dev_lock(hdev);
6905
6906         conn = hci_conn_hash_lookup_handle(hdev, handle);
6907         if (!conn) {
6908                 bt_dev_err(hdev,
6909                            "Unable to find connection with handle 0x%4.4x",
6910                            handle);
6911                 goto unlock;
6912         }
6913
6914         if (conn->type != ISO_LINK) {
6915                 bt_dev_err(hdev,
6916                            "Invalid connection link type handle 0x%4.4x",
6917                            handle);
6918                 goto unlock;
6919         }
6920
6921         if (conn->role == HCI_ROLE_SLAVE) {
6922                 __le32 interval;
6923
6924                 memset(&interval, 0, sizeof(interval));
6925
6926                 memcpy(&interval, ev->c_latency, sizeof(ev->c_latency));
6927                 conn->iso_qos.in.interval = le32_to_cpu(interval);
6928                 memcpy(&interval, ev->p_latency, sizeof(ev->p_latency));
6929                 conn->iso_qos.out.interval = le32_to_cpu(interval);
6930                 conn->iso_qos.in.latency = le16_to_cpu(ev->interval);
6931                 conn->iso_qos.out.latency = le16_to_cpu(ev->interval);
6932                 conn->iso_qos.in.sdu = le16_to_cpu(ev->c_mtu);
6933                 conn->iso_qos.out.sdu = le16_to_cpu(ev->p_mtu);
6934                 conn->iso_qos.in.phy = ev->c_phy;
6935                 conn->iso_qos.out.phy = ev->p_phy;
6936         }
6937
6938         if (!ev->status) {
6939                 conn->state = BT_CONNECTED;
6940                 hci_debugfs_create_conn(conn);
6941                 hci_conn_add_sysfs(conn);
6942                 hci_iso_setup_path(conn);
6943                 goto unlock;
6944         }
6945
6946         hci_connect_cfm(conn, ev->status);
6947         hci_conn_del(conn);
6948
6949 unlock:
6950         hci_dev_unlock(hdev);
6951 }
6952
6953 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
6954 {
6955         struct hci_cp_le_reject_cis cp;
6956
6957         memset(&cp, 0, sizeof(cp));
6958         cp.handle = handle;
6959         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
6960         hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
6961 }
6962
6963 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
6964 {
6965         struct hci_cp_le_accept_cis cp;
6966
6967         memset(&cp, 0, sizeof(cp));
6968         cp.handle = handle;
6969         hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
6970 }
6971
6972 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
6973                                struct sk_buff *skb)
6974 {
6975         struct hci_evt_le_cis_req *ev = data;
6976         u16 acl_handle, cis_handle;
6977         struct hci_conn *acl, *cis;
6978         int mask;
6979         __u8 flags = 0;
6980
6981         acl_handle = __le16_to_cpu(ev->acl_handle);
6982         cis_handle = __le16_to_cpu(ev->cis_handle);
6983
6984         bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
6985                    acl_handle, cis_handle, ev->cig_id, ev->cis_id);
6986
6987         hci_dev_lock(hdev);
6988
6989         acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
6990         if (!acl)
6991                 goto unlock;
6992
6993         mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
6994         if (!(mask & HCI_LM_ACCEPT)) {
6995                 hci_le_reject_cis(hdev, ev->cis_handle);
6996                 goto unlock;
6997         }
6998
6999         cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
7000         if (!cis) {
7001                 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE);
7002                 if (!cis) {
7003                         hci_le_reject_cis(hdev, ev->cis_handle);
7004                         goto unlock;
7005                 }
7006                 cis->handle = cis_handle;
7007         }
7008
7009         cis->iso_qos.cig = ev->cig_id;
7010         cis->iso_qos.cis = ev->cis_id;
7011
7012         if (!(flags & HCI_PROTO_DEFER)) {
7013                 hci_le_accept_cis(hdev, ev->cis_handle);
7014         } else {
7015                 cis->state = BT_CONNECT2;
7016                 hci_connect_cfm(cis, 0);
7017         }
7018
7019 unlock:
7020         hci_dev_unlock(hdev);
7021 }
7022
7023 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
7024                                            struct sk_buff *skb)
7025 {
7026         struct hci_evt_le_create_big_complete *ev = data;
7027         struct hci_conn *conn;
7028
7029         BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
7030
7031         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
7032                                 flex_array_size(ev, bis_handle, ev->num_bis)))
7033                 return;
7034
7035         hci_dev_lock(hdev);
7036
7037         conn = hci_conn_hash_lookup_big(hdev, ev->handle);
7038         if (!conn)
7039                 goto unlock;
7040
7041         if (conn->type != ISO_LINK) {
7042                 bt_dev_err(hdev,
7043                            "Invalid connection link type handle 0x%2.2x",
7044                            ev->handle);
7045                 goto unlock;
7046         }
7047
7048         if (ev->num_bis)
7049                 conn->handle = __le16_to_cpu(ev->bis_handle[0]);
7050
7051         if (!ev->status) {
7052                 conn->state = BT_CONNECTED;
7053                 hci_debugfs_create_conn(conn);
7054                 hci_conn_add_sysfs(conn);
7055                 hci_iso_setup_path(conn);
7056                 goto unlock;
7057         }
7058
7059         hci_connect_cfm(conn, ev->status);
7060         hci_conn_del(conn);
7061
7062 unlock:
7063         hci_dev_unlock(hdev);
7064 }
7065
7066 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
7067                                             struct sk_buff *skb)
7068 {
7069         struct hci_evt_le_big_sync_estabilished *ev = data;
7070         struct hci_conn *bis;
7071         int i;
7072
7073         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7074
7075         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7076                                 flex_array_size(ev, bis, ev->num_bis)))
7077                 return;
7078
7079         if (ev->status)
7080                 return;
7081
7082         hci_dev_lock(hdev);
7083
7084         for (i = 0; i < ev->num_bis; i++) {
7085                 u16 handle = le16_to_cpu(ev->bis[i]);
7086                 __le32 interval;
7087
7088                 bis = hci_conn_hash_lookup_handle(hdev, handle);
7089                 if (!bis) {
7090                         bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
7091                                            HCI_ROLE_SLAVE);
7092                         if (!bis)
7093                                 continue;
7094                         bis->handle = handle;
7095                 }
7096
7097                 bis->iso_qos.big = ev->handle;
7098                 memset(&interval, 0, sizeof(interval));
7099                 memcpy(&interval, ev->latency, sizeof(ev->latency));
7100                 bis->iso_qos.in.interval = le32_to_cpu(interval);
7101                 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7102                 bis->iso_qos.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7103                 bis->iso_qos.in.sdu = le16_to_cpu(ev->max_pdu);
7104
7105                 hci_iso_setup_path(bis);
7106         }
7107
7108         hci_dev_unlock(hdev);
7109 }
7110
7111 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7112                                            struct sk_buff *skb)
7113 {
7114         struct hci_evt_le_big_info_adv_report *ev = data;
7115         int mask = hdev->link_mode;
7116         __u8 flags = 0;
7117
7118         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7119
7120         hci_dev_lock(hdev);
7121
7122         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7123         if (!(mask & HCI_LM_ACCEPT))
7124                 hci_le_pa_term_sync(hdev, ev->sync_handle);
7125
7126         hci_dev_unlock(hdev);
7127 }
7128
7129 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7130 [_op] = { \
7131         .func = _func, \
7132         .min_len = _min_len, \
7133         .max_len = _max_len, \
7134 }
7135
7136 #define HCI_LE_EV(_op, _func, _len) \
7137         HCI_LE_EV_VL(_op, _func, _len, _len)
7138
7139 #define HCI_LE_EV_STATUS(_op, _func) \
7140         HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7141
7142 /* Entries in this table shall have their position according to the subevent
7143  * opcode they handle so the use of the macros above is recommend since it does
7144  * attempt to initialize at its proper index using Designated Initializers that
7145  * way events without a callback function can be ommited.
7146  */
7147 static const struct hci_le_ev {
7148         void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7149         u16  min_len;
7150         u16  max_len;
7151 } hci_le_ev_table[U8_MAX + 1] = {
7152         /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7153         HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7154                   sizeof(struct hci_ev_le_conn_complete)),
7155         /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7156         HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7157                      sizeof(struct hci_ev_le_advertising_report),
7158                      HCI_MAX_EVENT_SIZE),
7159         /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7160         HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7161                   hci_le_conn_update_complete_evt,
7162                   sizeof(struct hci_ev_le_conn_update_complete)),
7163         /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7164         HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7165                   hci_le_remote_feat_complete_evt,
7166                   sizeof(struct hci_ev_le_remote_feat_complete)),
7167         /* [0x05 = HCI_EV_LE_LTK_REQ] */
7168         HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7169                   sizeof(struct hci_ev_le_ltk_req)),
7170         /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7171         HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7172                   hci_le_remote_conn_param_req_evt,
7173                   sizeof(struct hci_ev_le_remote_conn_param_req)),
7174         /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7175         HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7176                   hci_le_enh_conn_complete_evt,
7177                   sizeof(struct hci_ev_le_enh_conn_complete)),
7178         /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7179         HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7180                      sizeof(struct hci_ev_le_direct_adv_report),
7181                      HCI_MAX_EVENT_SIZE),
7182         /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7183         HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7184                   sizeof(struct hci_ev_le_phy_update_complete)),
7185         /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7186         HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7187                      sizeof(struct hci_ev_le_ext_adv_report),
7188                      HCI_MAX_EVENT_SIZE),
7189         /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7190         HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7191                   hci_le_pa_sync_estabilished_evt,
7192                   sizeof(struct hci_ev_le_pa_sync_established)),
7193         /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7194         HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7195                   sizeof(struct hci_evt_le_ext_adv_set_term)),
7196         /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7197         HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7198                   sizeof(struct hci_evt_le_cis_established)),
7199         /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7200         HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7201                   sizeof(struct hci_evt_le_cis_req)),
7202         /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7203         HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7204                      hci_le_create_big_complete_evt,
7205                      sizeof(struct hci_evt_le_create_big_complete),
7206                      HCI_MAX_EVENT_SIZE),
7207         /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7208         HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7209                      hci_le_big_sync_established_evt,
7210                      sizeof(struct hci_evt_le_big_sync_estabilished),
7211                      HCI_MAX_EVENT_SIZE),
7212         /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7213         HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7214                      hci_le_big_info_adv_report_evt,
7215                      sizeof(struct hci_evt_le_big_info_adv_report),
7216                      HCI_MAX_EVENT_SIZE),
7217 };
7218
7219 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7220                             struct sk_buff *skb, u16 *opcode, u8 *status,
7221                             hci_req_complete_t *req_complete,
7222                             hci_req_complete_skb_t *req_complete_skb)
7223 {
7224         struct hci_ev_le_meta *ev = data;
7225         const struct hci_le_ev *subev;
7226
7227         bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7228
7229         /* Only match event if command OGF is for LE */
7230         if (hdev->sent_cmd &&
7231             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7232             hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7233                 *opcode = hci_skb_opcode(hdev->sent_cmd);
7234                 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7235                                      req_complete_skb);
7236         }
7237
7238         subev = &hci_le_ev_table[ev->subevent];
7239         if (!subev->func)
7240                 return;
7241
7242         if (skb->len < subev->min_len) {
7243                 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7244                            ev->subevent, skb->len, subev->min_len);
7245                 return;
7246         }
7247
7248         /* Just warn if the length is over max_len size it still be
7249          * possible to partially parse the event so leave to callback to
7250          * decide if that is acceptable.
7251          */
7252         if (skb->len > subev->max_len)
7253                 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7254                             ev->subevent, skb->len, subev->max_len);
7255         data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7256         if (!data)
7257                 return;
7258
7259         subev->func(hdev, data, skb);
7260 }
7261
7262 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7263                                  u8 event, struct sk_buff *skb)
7264 {
7265         struct hci_ev_cmd_complete *ev;
7266         struct hci_event_hdr *hdr;
7267
7268         if (!skb)
7269                 return false;
7270
7271         hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7272         if (!hdr)
7273                 return false;
7274
7275         if (event) {
7276                 if (hdr->evt != event)
7277                         return false;
7278                 return true;
7279         }
7280
7281         /* Check if request ended in Command Status - no way to retrieve
7282          * any extra parameters in this case.
7283          */
7284         if (hdr->evt == HCI_EV_CMD_STATUS)
7285                 return false;
7286
7287         if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7288                 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7289                            hdr->evt);
7290                 return false;
7291         }
7292
7293         ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7294         if (!ev)
7295                 return false;
7296
7297         if (opcode != __le16_to_cpu(ev->opcode)) {
7298                 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7299                        __le16_to_cpu(ev->opcode));
7300                 return false;
7301         }
7302
7303         return true;
7304 }
7305
7306 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7307                                   struct sk_buff *skb)
7308 {
7309         struct hci_ev_le_advertising_info *adv;
7310         struct hci_ev_le_direct_adv_info *direct_adv;
7311         struct hci_ev_le_ext_adv_info *ext_adv;
7312         const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7313         const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7314
7315         hci_dev_lock(hdev);
7316
7317         /* If we are currently suspended and this is the first BT event seen,
7318          * save the wake reason associated with the event.
7319          */
7320         if (!hdev->suspended || hdev->wake_reason)
7321                 goto unlock;
7322
7323         /* Default to remote wake. Values for wake_reason are documented in the
7324          * Bluez mgmt api docs.
7325          */
7326         hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7327
7328         /* Once configured for remote wakeup, we should only wake up for
7329          * reconnections. It's useful to see which device is waking us up so
7330          * keep track of the bdaddr of the connection event that woke us up.
7331          */
7332         if (event == HCI_EV_CONN_REQUEST) {
7333                 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7334                 hdev->wake_addr_type = BDADDR_BREDR;
7335         } else if (event == HCI_EV_CONN_COMPLETE) {
7336                 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7337                 hdev->wake_addr_type = BDADDR_BREDR;
7338         } else if (event == HCI_EV_LE_META) {
7339                 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7340                 u8 subevent = le_ev->subevent;
7341                 u8 *ptr = &skb->data[sizeof(*le_ev)];
7342                 u8 num_reports = *ptr;
7343
7344                 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7345                      subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7346                      subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7347                     num_reports) {
7348                         adv = (void *)(ptr + 1);
7349                         direct_adv = (void *)(ptr + 1);
7350                         ext_adv = (void *)(ptr + 1);
7351
7352                         switch (subevent) {
7353                         case HCI_EV_LE_ADVERTISING_REPORT:
7354                                 bacpy(&hdev->wake_addr, &adv->bdaddr);
7355                                 hdev->wake_addr_type = adv->bdaddr_type;
7356                                 break;
7357                         case HCI_EV_LE_DIRECT_ADV_REPORT:
7358                                 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7359                                 hdev->wake_addr_type = direct_adv->bdaddr_type;
7360                                 break;
7361                         case HCI_EV_LE_EXT_ADV_REPORT:
7362                                 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7363                                 hdev->wake_addr_type = ext_adv->bdaddr_type;
7364                                 break;
7365                         }
7366                 }
7367         } else {
7368                 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7369         }
7370
7371 unlock:
7372         hci_dev_unlock(hdev);
7373 }
7374
7375 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7376 [_op] = { \
7377         .req = false, \
7378         .func = _func, \
7379         .min_len = _min_len, \
7380         .max_len = _max_len, \
7381 }
7382
7383 #define HCI_EV(_op, _func, _len) \
7384         HCI_EV_VL(_op, _func, _len, _len)
7385
7386 #define HCI_EV_STATUS(_op, _func) \
7387         HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7388
7389 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7390 [_op] = { \
7391         .req = true, \
7392         .func_req = _func, \
7393         .min_len = _min_len, \
7394         .max_len = _max_len, \
7395 }
7396
7397 #define HCI_EV_REQ(_op, _func, _len) \
7398         HCI_EV_REQ_VL(_op, _func, _len, _len)
7399
7400 /* Entries in this table shall have their position according to the event opcode
7401  * they handle so the use of the macros above is recommend since it does attempt
7402  * to initialize at its proper index using Designated Initializers that way
7403  * events without a callback function don't have entered.
7404  */
7405 static const struct hci_ev {
7406         bool req;
7407         union {
7408                 void (*func)(struct hci_dev *hdev, void *data,
7409                              struct sk_buff *skb);
7410                 void (*func_req)(struct hci_dev *hdev, void *data,
7411                                  struct sk_buff *skb, u16 *opcode, u8 *status,
7412                                  hci_req_complete_t *req_complete,
7413                                  hci_req_complete_skb_t *req_complete_skb);
7414         };
7415         u16  min_len;
7416         u16  max_len;
7417 } hci_ev_table[U8_MAX + 1] = {
7418         /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7419         HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7420         /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7421         HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7422                   sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7423         /* [0x03 = HCI_EV_CONN_COMPLETE] */
7424         HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7425                sizeof(struct hci_ev_conn_complete)),
7426         /* [0x04 = HCI_EV_CONN_REQUEST] */
7427         HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7428                sizeof(struct hci_ev_conn_request)),
7429         /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7430         HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7431                sizeof(struct hci_ev_disconn_complete)),
7432         /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7433         HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7434                sizeof(struct hci_ev_auth_complete)),
7435         /* [0x07 = HCI_EV_REMOTE_NAME] */
7436         HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7437                sizeof(struct hci_ev_remote_name)),
7438         /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7439         HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7440                sizeof(struct hci_ev_encrypt_change)),
7441         /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7442         HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7443                hci_change_link_key_complete_evt,
7444                sizeof(struct hci_ev_change_link_key_complete)),
7445         /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7446         HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7447                sizeof(struct hci_ev_remote_features)),
7448         /* [0x0e = HCI_EV_CMD_COMPLETE] */
7449         HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7450                       sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7451         /* [0x0f = HCI_EV_CMD_STATUS] */
7452         HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7453                    sizeof(struct hci_ev_cmd_status)),
7454         /* [0x10 = HCI_EV_CMD_STATUS] */
7455         HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7456                sizeof(struct hci_ev_hardware_error)),
7457         /* [0x12 = HCI_EV_ROLE_CHANGE] */
7458         HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7459                sizeof(struct hci_ev_role_change)),
7460         /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7461         HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7462                   sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7463         /* [0x14 = HCI_EV_MODE_CHANGE] */
7464         HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7465                sizeof(struct hci_ev_mode_change)),
7466         /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7467         HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7468                sizeof(struct hci_ev_pin_code_req)),
7469         /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7470         HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7471                sizeof(struct hci_ev_link_key_req)),
7472         /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7473         HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7474                sizeof(struct hci_ev_link_key_notify)),
7475         /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7476         HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7477                sizeof(struct hci_ev_clock_offset)),
7478         /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7479         HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7480                sizeof(struct hci_ev_pkt_type_change)),
7481         /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7482         HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7483                sizeof(struct hci_ev_pscan_rep_mode)),
7484         /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7485         HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7486                   hci_inquiry_result_with_rssi_evt,
7487                   sizeof(struct hci_ev_inquiry_result_rssi),
7488                   HCI_MAX_EVENT_SIZE),
7489         /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7490         HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7491                sizeof(struct hci_ev_remote_ext_features)),
7492         /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7493         HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7494                sizeof(struct hci_ev_sync_conn_complete)),
7495         /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7496         HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7497                   hci_extended_inquiry_result_evt,
7498                   sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7499         /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7500         HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7501                sizeof(struct hci_ev_key_refresh_complete)),
7502         /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7503         HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7504                sizeof(struct hci_ev_io_capa_request)),
7505         /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7506         HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7507                sizeof(struct hci_ev_io_capa_reply)),
7508         /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7509         HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7510                sizeof(struct hci_ev_user_confirm_req)),
7511         /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7512         HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7513                sizeof(struct hci_ev_user_passkey_req)),
7514         /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7515         HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7516                sizeof(struct hci_ev_remote_oob_data_request)),
7517         /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7518         HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7519                sizeof(struct hci_ev_simple_pair_complete)),
7520         /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7521         HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7522                sizeof(struct hci_ev_user_passkey_notify)),
7523         /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7524         HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7525                sizeof(struct hci_ev_keypress_notify)),
7526         /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7527         HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7528                sizeof(struct hci_ev_remote_host_features)),
7529         /* [0x3e = HCI_EV_LE_META] */
7530         HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7531                       sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7532 #if IS_ENABLED(CONFIG_BT_HS)
7533         /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7534         HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7535                sizeof(struct hci_ev_phy_link_complete)),
7536         /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7537         HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7538                sizeof(struct hci_ev_channel_selected)),
7539         /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7540         HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7541                hci_disconn_loglink_complete_evt,
7542                sizeof(struct hci_ev_disconn_logical_link_complete)),
7543         /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7544         HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7545                sizeof(struct hci_ev_logical_link_complete)),
7546         /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7547         HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7548                hci_disconn_phylink_complete_evt,
7549                sizeof(struct hci_ev_disconn_phy_link_complete)),
7550 #endif
7551         /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7552         HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7553                sizeof(struct hci_ev_num_comp_blocks)),
7554 #ifdef TIZEN_BT
7555         /* [0xFF = HCI_EV_VENDOR_SPECIFIC] */
7556         HCI_EV(HCI_EV_VENDOR_SPECIFIC, hci_vendor_specific_evt,
7557                sizeof(struct hci_ev_vendor_specific)),
7558 #else
7559         /* [0xff = HCI_EV_VENDOR] */
7560         HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7561 #endif
7562 };
7563
7564 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7565                            u16 *opcode, u8 *status,
7566                            hci_req_complete_t *req_complete,
7567                            hci_req_complete_skb_t *req_complete_skb)
7568 {
7569         const struct hci_ev *ev = &hci_ev_table[event];
7570         void *data;
7571
7572         if (!ev->func)
7573                 return;
7574
7575         if (skb->len < ev->min_len) {
7576                 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7577                            event, skb->len, ev->min_len);
7578                 return;
7579         }
7580
7581         /* Just warn if the length is over max_len size it still be
7582          * possible to partially parse the event so leave to callback to
7583          * decide if that is acceptable.
7584          */
7585         if (skb->len > ev->max_len)
7586                 bt_dev_warn_ratelimited(hdev,
7587                                         "unexpected event 0x%2.2x length: %u > %u",
7588                                         event, skb->len, ev->max_len);
7589
7590         data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7591         if (!data)
7592                 return;
7593
7594         if (ev->req)
7595                 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7596                              req_complete_skb);
7597         else
7598                 ev->func(hdev, data, skb);
7599 }
7600
7601 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7602 {
7603         struct hci_event_hdr *hdr = (void *) skb->data;
7604         hci_req_complete_t req_complete = NULL;
7605         hci_req_complete_skb_t req_complete_skb = NULL;
7606         struct sk_buff *orig_skb = NULL;
7607         u8 status = 0, event, req_evt = 0;
7608         u16 opcode = HCI_OP_NOP;
7609
7610         if (skb->len < sizeof(*hdr)) {
7611                 bt_dev_err(hdev, "Malformed HCI Event");
7612                 goto done;
7613         }
7614
7615         kfree_skb(hdev->recv_event);
7616         hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7617
7618         event = hdr->evt;
7619         if (!event) {
7620                 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7621                             event);
7622                 goto done;
7623         }
7624
7625         /* Only match event if command OGF is not for LE */
7626         if (hdev->sent_cmd &&
7627             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7628             hci_skb_event(hdev->sent_cmd) == event) {
7629                 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7630                                      status, &req_complete, &req_complete_skb);
7631                 req_evt = event;
7632         }
7633
7634         /* If it looks like we might end up having to call
7635          * req_complete_skb, store a pristine copy of the skb since the
7636          * various handlers may modify the original one through
7637          * skb_pull() calls, etc.
7638          */
7639         if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7640             event == HCI_EV_CMD_COMPLETE)
7641                 orig_skb = skb_clone(skb, GFP_KERNEL);
7642
7643         skb_pull(skb, HCI_EVENT_HDR_SIZE);
7644
7645         /* Store wake reason if we're suspended */
7646         hci_store_wake_reason(hdev, event, skb);
7647
7648         bt_dev_dbg(hdev, "event 0x%2.2x", event);
7649
7650         hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7651                        &req_complete_skb);
7652
7653         if (req_complete) {
7654                 req_complete(hdev, status, opcode);
7655         } else if (req_complete_skb) {
7656                 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7657                         kfree_skb(orig_skb);
7658                         orig_skb = NULL;
7659                 }
7660                 req_complete_skb(hdev, status, opcode, orig_skb);
7661         }
7662
7663 done:
7664         kfree_skb(orig_skb);
7665         kfree_skb(skb);
7666         hdev->stat.evt_rx++;
7667 }