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