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         /* We don't want the connection attempt to stick around
2881          * indefinitely since LE doesn't have a page timeout concept
2882          * like BR/EDR. Set a timer for any connection that doesn't use
2883          * the accept list for connecting.
2884          */
2885         if (filter_policy == HCI_LE_USE_PEER_ADDR)
2886                 queue_delayed_work(conn->hdev->workqueue,
2887                                    &conn->le_conn_timeout,
2888                                    conn->conn_timeout);
2889 }
2890
2891 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2892 {
2893         struct hci_cp_le_create_conn *cp;
2894
2895         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2896
2897         /* All connection failure handling is taken care of by the
2898          * hci_conn_failed function which is triggered by the HCI
2899          * request completion callbacks used for connecting.
2900          */
2901         if (status)
2902                 return;
2903
2904         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
2905         if (!cp)
2906                 return;
2907
2908         hci_dev_lock(hdev);
2909
2910         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2911                           cp->own_address_type, cp->filter_policy);
2912
2913         hci_dev_unlock(hdev);
2914 }
2915
2916 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
2917 {
2918         struct hci_cp_le_ext_create_conn *cp;
2919
2920         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2921
2922         /* All connection failure handling is taken care of by the
2923          * hci_conn_failed function which is triggered by the HCI
2924          * request completion callbacks used for connecting.
2925          */
2926         if (status)
2927                 return;
2928
2929         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
2930         if (!cp)
2931                 return;
2932
2933         hci_dev_lock(hdev);
2934
2935         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2936                           cp->own_addr_type, cp->filter_policy);
2937
2938         hci_dev_unlock(hdev);
2939 }
2940
2941 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
2942 {
2943         struct hci_cp_le_read_remote_features *cp;
2944         struct hci_conn *conn;
2945
2946         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2947
2948         if (!status)
2949                 return;
2950
2951         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
2952         if (!cp)
2953                 return;
2954
2955         hci_dev_lock(hdev);
2956
2957         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2958         if (conn) {
2959                 if (conn->state == BT_CONFIG) {
2960                         hci_connect_cfm(conn, status);
2961                         hci_conn_drop(conn);
2962                 }
2963         }
2964
2965         hci_dev_unlock(hdev);
2966 }
2967
2968 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
2969 {
2970         struct hci_cp_le_start_enc *cp;
2971         struct hci_conn *conn;
2972
2973         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2974
2975         if (!status)
2976                 return;
2977
2978         hci_dev_lock(hdev);
2979
2980         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
2981         if (!cp)
2982                 goto unlock;
2983
2984         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2985         if (!conn)
2986                 goto unlock;
2987
2988         if (conn->state != BT_CONNECTED)
2989                 goto unlock;
2990
2991         hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2992         hci_conn_drop(conn);
2993
2994 unlock:
2995         hci_dev_unlock(hdev);
2996 }
2997
2998 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
2999 {
3000         struct hci_cp_switch_role *cp;
3001         struct hci_conn *conn;
3002
3003         BT_DBG("%s status 0x%2.2x", hdev->name, status);
3004
3005         if (!status)
3006                 return;
3007
3008         cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3009         if (!cp)
3010                 return;
3011
3012         hci_dev_lock(hdev);
3013
3014         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3015         if (conn)
3016                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3017
3018         hci_dev_unlock(hdev);
3019 }
3020
3021 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3022                                      struct sk_buff *skb)
3023 {
3024         struct hci_ev_status *ev = data;
3025         struct discovery_state *discov = &hdev->discovery;
3026         struct inquiry_entry *e;
3027
3028         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3029
3030         hci_conn_check_pending(hdev);
3031
3032         if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3033                 return;
3034
3035         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3036         wake_up_bit(&hdev->flags, HCI_INQUIRY);
3037
3038         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3039                 return;
3040
3041         hci_dev_lock(hdev);
3042
3043         if (discov->state != DISCOVERY_FINDING)
3044                 goto unlock;
3045
3046         if (list_empty(&discov->resolve)) {
3047                 /* When BR/EDR inquiry is active and no LE scanning is in
3048                  * progress, then change discovery state to indicate completion.
3049                  *
3050                  * When running LE scanning and BR/EDR inquiry simultaneously
3051                  * and the LE scan already finished, then change the discovery
3052                  * state to indicate completion.
3053                  */
3054                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3055                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3056                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3057                 goto unlock;
3058         }
3059
3060         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3061         if (e && hci_resolve_name(hdev, e) == 0) {
3062                 e->name_state = NAME_PENDING;
3063                 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3064                 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3065         } else {
3066                 /* When BR/EDR inquiry is active and no LE scanning is in
3067                  * progress, then change discovery state to indicate completion.
3068                  *
3069                  * When running LE scanning and BR/EDR inquiry simultaneously
3070                  * and the LE scan already finished, then change the discovery
3071                  * state to indicate completion.
3072                  */
3073                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3074                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3075                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3076         }
3077
3078 unlock:
3079         hci_dev_unlock(hdev);
3080 }
3081
3082 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3083                                    struct sk_buff *skb)
3084 {
3085         struct hci_ev_inquiry_result *ev = edata;
3086         struct inquiry_data data;
3087         int i;
3088
3089         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3090                              flex_array_size(ev, info, ev->num)))
3091                 return;
3092
3093         bt_dev_dbg(hdev, "num %d", ev->num);
3094
3095         if (!ev->num)
3096                 return;
3097
3098         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3099                 return;
3100
3101         hci_dev_lock(hdev);
3102
3103         for (i = 0; i < ev->num; i++) {
3104                 struct inquiry_info *info = &ev->info[i];
3105                 u32 flags;
3106
3107                 bacpy(&data.bdaddr, &info->bdaddr);
3108                 data.pscan_rep_mode     = info->pscan_rep_mode;
3109                 data.pscan_period_mode  = info->pscan_period_mode;
3110                 data.pscan_mode         = info->pscan_mode;
3111                 memcpy(data.dev_class, info->dev_class, 3);
3112                 data.clock_offset       = info->clock_offset;
3113                 data.rssi               = HCI_RSSI_INVALID;
3114                 data.ssp_mode           = 0x00;
3115
3116                 flags = hci_inquiry_cache_update(hdev, &data, false);
3117
3118                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3119                                   info->dev_class, HCI_RSSI_INVALID,
3120                                   flags, NULL, 0, NULL, 0, 0);
3121         }
3122
3123         hci_dev_unlock(hdev);
3124 }
3125
3126 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3127                                   struct sk_buff *skb)
3128 {
3129         struct hci_ev_conn_complete *ev = data;
3130         struct hci_conn *conn;
3131         u8 status = ev->status;
3132
3133         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3134
3135         hci_dev_lock(hdev);
3136
3137         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3138         if (!conn) {
3139                 /* In case of error status and there is no connection pending
3140                  * just unlock as there is nothing to cleanup.
3141                  */
3142                 if (ev->status)
3143                         goto unlock;
3144
3145                 /* Connection may not exist if auto-connected. Check the bredr
3146                  * allowlist to see if this device is allowed to auto connect.
3147                  * If link is an ACL type, create a connection class
3148                  * automatically.
3149                  *
3150                  * Auto-connect will only occur if the event filter is
3151                  * programmed with a given address. Right now, event filter is
3152                  * only used during suspend.
3153                  */
3154                 if (ev->link_type == ACL_LINK &&
3155                     hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3156                                                       &ev->bdaddr,
3157                                                       BDADDR_BREDR)) {
3158                         conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3159                                             HCI_ROLE_SLAVE);
3160                         if (!conn) {
3161                                 bt_dev_err(hdev, "no memory for new conn");
3162                                 goto unlock;
3163                         }
3164                 } else {
3165                         if (ev->link_type != SCO_LINK)
3166                                 goto unlock;
3167
3168                         conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3169                                                        &ev->bdaddr);
3170                         if (!conn)
3171                                 goto unlock;
3172
3173                         conn->type = SCO_LINK;
3174                 }
3175         }
3176
3177         /* The HCI_Connection_Complete event is only sent once per connection.
3178          * Processing it more than once per connection can corrupt kernel memory.
3179          *
3180          * As the connection handle is set here for the first time, it indicates
3181          * whether the connection is already set up.
3182          */
3183         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
3184                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3185                 goto unlock;
3186         }
3187
3188         if (!status) {
3189                 conn->handle = __le16_to_cpu(ev->handle);
3190                 if (conn->handle > HCI_CONN_HANDLE_MAX) {
3191                         bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
3192                                    conn->handle, HCI_CONN_HANDLE_MAX);
3193                         status = HCI_ERROR_INVALID_PARAMETERS;
3194                         goto done;
3195                 }
3196
3197                 if (conn->type == ACL_LINK) {
3198                         conn->state = BT_CONFIG;
3199                         hci_conn_hold(conn);
3200
3201                         if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3202                             !hci_find_link_key(hdev, &ev->bdaddr))
3203                                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3204                         else
3205                                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3206                 } else
3207                         conn->state = BT_CONNECTED;
3208
3209                 hci_debugfs_create_conn(conn);
3210                 hci_conn_add_sysfs(conn);
3211
3212                 if (test_bit(HCI_AUTH, &hdev->flags))
3213                         set_bit(HCI_CONN_AUTH, &conn->flags);
3214
3215                 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3216                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3217
3218                 /* Get remote features */
3219                 if (conn->type == ACL_LINK) {
3220                         struct hci_cp_read_remote_features cp;
3221                         cp.handle = ev->handle;
3222                         hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3223                                      sizeof(cp), &cp);
3224
3225                         hci_update_scan(hdev);
3226                 }
3227
3228                 /* Set packet type for incoming connection */
3229                 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3230                         struct hci_cp_change_conn_ptype cp;
3231                         cp.handle = ev->handle;
3232                         cp.pkt_type = cpu_to_le16(conn->pkt_type);
3233                         hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3234                                      &cp);
3235                 }
3236         }
3237
3238         if (conn->type == ACL_LINK)
3239                 hci_sco_setup(conn, ev->status);
3240
3241 done:
3242         if (status) {
3243                 hci_conn_failed(conn, status);
3244         } else if (ev->link_type == SCO_LINK) {
3245                 switch (conn->setting & SCO_AIRMODE_MASK) {
3246                 case SCO_AIRMODE_CVSD:
3247                         if (hdev->notify)
3248                                 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3249                         break;
3250                 }
3251
3252                 hci_connect_cfm(conn, status);
3253         }
3254
3255 unlock:
3256         hci_dev_unlock(hdev);
3257
3258         hci_conn_check_pending(hdev);
3259 }
3260
3261 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3262 {
3263         struct hci_cp_reject_conn_req cp;
3264
3265         bacpy(&cp.bdaddr, bdaddr);
3266         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3267         hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3268 }
3269
3270 static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3271                                  struct sk_buff *skb)
3272 {
3273         struct hci_ev_conn_request *ev = data;
3274         int mask = hdev->link_mode;
3275         struct inquiry_entry *ie;
3276         struct hci_conn *conn;
3277         __u8 flags = 0;
3278
3279         bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3280
3281         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3282                                       &flags);
3283
3284         if (!(mask & HCI_LM_ACCEPT)) {
3285                 hci_reject_conn(hdev, &ev->bdaddr);
3286                 return;
3287         }
3288
3289         hci_dev_lock(hdev);
3290
3291         if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3292                                    BDADDR_BREDR)) {
3293                 hci_reject_conn(hdev, &ev->bdaddr);
3294                 goto unlock;
3295         }
3296
3297         /* Require HCI_CONNECTABLE or an accept list entry to accept the
3298          * connection. These features are only touched through mgmt so
3299          * only do the checks if HCI_MGMT is set.
3300          */
3301         if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3302             !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3303             !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3304                                                BDADDR_BREDR)) {
3305                 hci_reject_conn(hdev, &ev->bdaddr);
3306                 goto unlock;
3307         }
3308
3309         /* Connection accepted */
3310
3311         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3312         if (ie)
3313                 memcpy(ie->data.dev_class, ev->dev_class, 3);
3314
3315         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3316                         &ev->bdaddr);
3317         if (!conn) {
3318                 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3319                                     HCI_ROLE_SLAVE);
3320                 if (!conn) {
3321                         bt_dev_err(hdev, "no memory for new connection");
3322                         goto unlock;
3323                 }
3324         }
3325
3326         memcpy(conn->dev_class, ev->dev_class, 3);
3327
3328         hci_dev_unlock(hdev);
3329
3330         if (ev->link_type == ACL_LINK ||
3331             (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3332                 struct hci_cp_accept_conn_req cp;
3333                 conn->state = BT_CONNECT;
3334
3335                 bacpy(&cp.bdaddr, &ev->bdaddr);
3336
3337                 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3338                         cp.role = 0x00; /* Become central */
3339                 else
3340                         cp.role = 0x01; /* Remain peripheral */
3341
3342                 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3343         } else if (!(flags & HCI_PROTO_DEFER)) {
3344                 struct hci_cp_accept_sync_conn_req cp;
3345                 conn->state = BT_CONNECT;
3346
3347                 bacpy(&cp.bdaddr, &ev->bdaddr);
3348                 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3349
3350                 cp.tx_bandwidth   = cpu_to_le32(0x00001f40);
3351                 cp.rx_bandwidth   = cpu_to_le32(0x00001f40);
3352                 cp.max_latency    = cpu_to_le16(0xffff);
3353                 cp.content_format = cpu_to_le16(hdev->voice_setting);
3354                 cp.retrans_effort = 0xff;
3355
3356                 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3357                              &cp);
3358         } else {
3359                 conn->state = BT_CONNECT2;
3360                 hci_connect_cfm(conn, 0);
3361         }
3362
3363         return;
3364 unlock:
3365         hci_dev_unlock(hdev);
3366 }
3367
3368 static u8 hci_to_mgmt_reason(u8 err)
3369 {
3370         switch (err) {
3371         case HCI_ERROR_CONNECTION_TIMEOUT:
3372                 return MGMT_DEV_DISCONN_TIMEOUT;
3373         case HCI_ERROR_REMOTE_USER_TERM:
3374         case HCI_ERROR_REMOTE_LOW_RESOURCES:
3375         case HCI_ERROR_REMOTE_POWER_OFF:
3376                 return MGMT_DEV_DISCONN_REMOTE;
3377         case HCI_ERROR_LOCAL_HOST_TERM:
3378                 return MGMT_DEV_DISCONN_LOCAL_HOST;
3379         default:
3380                 return MGMT_DEV_DISCONN_UNKNOWN;
3381         }
3382 }
3383
3384 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3385                                      struct sk_buff *skb)
3386 {
3387         struct hci_ev_disconn_complete *ev = data;
3388         u8 reason;
3389         struct hci_conn_params *params;
3390         struct hci_conn *conn;
3391         bool mgmt_connected;
3392
3393         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3394
3395         hci_dev_lock(hdev);
3396
3397         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3398         if (!conn)
3399                 goto unlock;
3400
3401         if (ev->status) {
3402                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3403                                        conn->dst_type, ev->status);
3404                 goto unlock;
3405         }
3406
3407         conn->state = BT_CLOSED;
3408
3409         mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3410
3411         if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3412                 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3413         else
3414                 reason = hci_to_mgmt_reason(ev->reason);
3415
3416         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3417                                 reason, mgmt_connected);
3418
3419         if (conn->type == ACL_LINK) {
3420                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3421                         hci_remove_link_key(hdev, &conn->dst);
3422
3423                 hci_update_scan(hdev);
3424         }
3425
3426         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3427         if (params) {
3428                 switch (params->auto_connect) {
3429                 case HCI_AUTO_CONN_LINK_LOSS:
3430                         if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3431                                 break;
3432                         fallthrough;
3433
3434                 case HCI_AUTO_CONN_DIRECT:
3435                 case HCI_AUTO_CONN_ALWAYS:
3436                         list_del_init(&params->action);
3437                         list_add(&params->action, &hdev->pend_le_conns);
3438                         hci_update_passive_scan(hdev);
3439                         break;
3440
3441                 default:
3442                         break;
3443                 }
3444         }
3445
3446         hci_disconn_cfm(conn, ev->reason);
3447
3448         /* Re-enable advertising if necessary, since it might
3449          * have been disabled by the connection. From the
3450          * HCI_LE_Set_Advertise_Enable command description in
3451          * the core specification (v4.0):
3452          * "The Controller shall continue advertising until the Host
3453          * issues an LE_Set_Advertise_Enable command with
3454          * Advertising_Enable set to 0x00 (Advertising is disabled)
3455          * or until a connection is created or until the Advertising
3456          * is timed out due to Directed Advertising."
3457          */
3458         if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3459                 hdev->cur_adv_instance = conn->adv_instance;
3460                 hci_enable_advertising(hdev);
3461         }
3462
3463         hci_conn_del(conn);
3464
3465 unlock:
3466         hci_dev_unlock(hdev);
3467 }
3468
3469 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3470                                   struct sk_buff *skb)
3471 {
3472         struct hci_ev_auth_complete *ev = data;
3473         struct hci_conn *conn;
3474
3475         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3476
3477         hci_dev_lock(hdev);
3478
3479         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3480         if (!conn)
3481                 goto unlock;
3482
3483         if (!ev->status) {
3484                 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3485
3486                 if (!hci_conn_ssp_enabled(conn) &&
3487                     test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
3488                         bt_dev_info(hdev, "re-auth of legacy device is not possible.");
3489                 } else {
3490                         set_bit(HCI_CONN_AUTH, &conn->flags);
3491                         conn->sec_level = conn->pending_sec_level;
3492                 }
3493         } else {
3494                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3495                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3496
3497                 mgmt_auth_failed(conn, ev->status);
3498         }
3499
3500         clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3501         clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
3502
3503         if (conn->state == BT_CONFIG) {
3504                 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3505                         struct hci_cp_set_conn_encrypt cp;
3506                         cp.handle  = ev->handle;
3507                         cp.encrypt = 0x01;
3508                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3509                                      &cp);
3510                 } else {
3511                         conn->state = BT_CONNECTED;
3512                         hci_connect_cfm(conn, ev->status);
3513                         hci_conn_drop(conn);
3514                 }
3515         } else {
3516                 hci_auth_cfm(conn, ev->status);
3517
3518                 hci_conn_hold(conn);
3519                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3520                 hci_conn_drop(conn);
3521         }
3522
3523         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3524                 if (!ev->status) {
3525                         struct hci_cp_set_conn_encrypt cp;
3526                         cp.handle  = ev->handle;
3527                         cp.encrypt = 0x01;
3528                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3529                                      &cp);
3530                 } else {
3531                         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3532                         hci_encrypt_cfm(conn, ev->status);
3533                 }
3534         }
3535
3536 unlock:
3537         hci_dev_unlock(hdev);
3538 }
3539
3540 static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3541                                 struct sk_buff *skb)
3542 {
3543         struct hci_ev_remote_name *ev = data;
3544         struct hci_conn *conn;
3545
3546         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3547
3548         hci_conn_check_pending(hdev);
3549
3550         hci_dev_lock(hdev);
3551
3552         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3553
3554         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3555                 goto check_auth;
3556
3557         if (ev->status == 0)
3558                 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3559                                        strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3560         else
3561                 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3562
3563 check_auth:
3564         if (!conn)
3565                 goto unlock;
3566
3567         if (!hci_outgoing_auth_needed(hdev, conn))
3568                 goto unlock;
3569
3570         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3571                 struct hci_cp_auth_requested cp;
3572
3573                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3574
3575                 cp.handle = __cpu_to_le16(conn->handle);
3576                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3577         }
3578
3579 unlock:
3580         hci_dev_unlock(hdev);
3581 }
3582
3583 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3584                                    struct sk_buff *skb)
3585 {
3586         struct hci_ev_encrypt_change *ev = data;
3587         struct hci_conn *conn;
3588
3589         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3590
3591         hci_dev_lock(hdev);
3592
3593         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3594         if (!conn)
3595                 goto unlock;
3596
3597         if (!ev->status) {
3598                 if (ev->encrypt) {
3599                         /* Encryption implies authentication */
3600                         set_bit(HCI_CONN_AUTH, &conn->flags);
3601                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3602                         conn->sec_level = conn->pending_sec_level;
3603
3604                         /* P-256 authentication key implies FIPS */
3605                         if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3606                                 set_bit(HCI_CONN_FIPS, &conn->flags);
3607
3608                         if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3609                             conn->type == LE_LINK)
3610                                 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3611                 } else {
3612                         clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3613                         clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3614                 }
3615         }
3616
3617         /* We should disregard the current RPA and generate a new one
3618          * whenever the encryption procedure fails.
3619          */
3620         if (ev->status && conn->type == LE_LINK) {
3621                 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3622                 hci_adv_instances_set_rpa_expired(hdev, true);
3623         }
3624
3625         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3626
3627         /* Check link security requirements are met */
3628         if (!hci_conn_check_link_mode(conn))
3629                 ev->status = HCI_ERROR_AUTH_FAILURE;
3630
3631         if (ev->status && conn->state == BT_CONNECTED) {
3632                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3633                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3634
3635                 /* Notify upper layers so they can cleanup before
3636                  * disconnecting.
3637                  */
3638                 hci_encrypt_cfm(conn, ev->status);
3639                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3640                 hci_conn_drop(conn);
3641                 goto unlock;
3642         }
3643
3644         /* Try reading the encryption key size for encrypted ACL links */
3645         if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3646                 struct hci_cp_read_enc_key_size cp;
3647
3648                 /* Only send HCI_Read_Encryption_Key_Size if the
3649                  * controller really supports it. If it doesn't, assume
3650                  * the default size (16).
3651                  */
3652                 if (!(hdev->commands[20] & 0x10)) {
3653                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3654                         goto notify;
3655                 }
3656
3657                 cp.handle = cpu_to_le16(conn->handle);
3658                 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3659                                  sizeof(cp), &cp)) {
3660                         bt_dev_err(hdev, "sending read key size failed");
3661                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3662                         goto notify;
3663                 }
3664
3665                 goto unlock;
3666         }
3667
3668         /* Set the default Authenticated Payload Timeout after
3669          * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3670          * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3671          * sent when the link is active and Encryption is enabled, the conn
3672          * type can be either LE or ACL and controller must support LMP Ping.
3673          * Ensure for AES-CCM encryption as well.
3674          */
3675         if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3676             test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3677             ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3678              (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3679                 struct hci_cp_write_auth_payload_to cp;
3680
3681                 cp.handle = cpu_to_le16(conn->handle);
3682                 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3683                 hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3684                              sizeof(cp), &cp);
3685         }
3686
3687 notify:
3688         hci_encrypt_cfm(conn, ev->status);
3689
3690 unlock:
3691         hci_dev_unlock(hdev);
3692 }
3693
3694 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3695                                              struct sk_buff *skb)
3696 {
3697         struct hci_ev_change_link_key_complete *ev = data;
3698         struct hci_conn *conn;
3699
3700         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3701
3702         hci_dev_lock(hdev);
3703
3704         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3705         if (conn) {
3706                 if (!ev->status)
3707                         set_bit(HCI_CONN_SECURE, &conn->flags);
3708
3709                 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3710
3711                 hci_key_change_cfm(conn, ev->status);
3712         }
3713
3714         hci_dev_unlock(hdev);
3715 }
3716
3717 static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3718                                     struct sk_buff *skb)
3719 {
3720         struct hci_ev_remote_features *ev = data;
3721         struct hci_conn *conn;
3722
3723         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3724
3725         hci_dev_lock(hdev);
3726
3727         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3728         if (!conn)
3729                 goto unlock;
3730
3731         if (!ev->status)
3732                 memcpy(conn->features[0], ev->features, 8);
3733
3734         if (conn->state != BT_CONFIG)
3735                 goto unlock;
3736
3737         if (!ev->status && lmp_ext_feat_capable(hdev) &&
3738             lmp_ext_feat_capable(conn)) {
3739                 struct hci_cp_read_remote_ext_features cp;
3740                 cp.handle = ev->handle;
3741                 cp.page = 0x01;
3742                 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3743                              sizeof(cp), &cp);
3744                 goto unlock;
3745         }
3746
3747         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3748                 struct hci_cp_remote_name_req cp;
3749                 memset(&cp, 0, sizeof(cp));
3750                 bacpy(&cp.bdaddr, &conn->dst);
3751                 cp.pscan_rep_mode = 0x02;
3752                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3753         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3754                 mgmt_device_connected(hdev, conn, NULL, 0);
3755
3756         if (!hci_outgoing_auth_needed(hdev, conn)) {
3757                 conn->state = BT_CONNECTED;
3758                 hci_connect_cfm(conn, ev->status);
3759                 hci_conn_drop(conn);
3760         }
3761
3762 unlock:
3763         hci_dev_unlock(hdev);
3764 }
3765
3766 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3767 {
3768         cancel_delayed_work(&hdev->cmd_timer);
3769
3770         rcu_read_lock();
3771         if (!test_bit(HCI_RESET, &hdev->flags)) {
3772                 if (ncmd) {
3773                         cancel_delayed_work(&hdev->ncmd_timer);
3774                         atomic_set(&hdev->cmd_cnt, 1);
3775                 } else {
3776                         if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3777                                 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3778                                                    HCI_NCMD_TIMEOUT);
3779                 }
3780         }
3781         rcu_read_unlock();
3782 }
3783
3784 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3785                                         struct sk_buff *skb)
3786 {
3787         struct hci_rp_le_read_buffer_size_v2 *rp = data;
3788
3789         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3790
3791         if (rp->status)
3792                 return rp->status;
3793
3794         hdev->le_mtu   = __le16_to_cpu(rp->acl_mtu);
3795         hdev->le_pkts  = rp->acl_max_pkt;
3796         hdev->iso_mtu  = __le16_to_cpu(rp->iso_mtu);
3797         hdev->iso_pkts = rp->iso_max_pkt;
3798
3799         hdev->le_cnt  = hdev->le_pkts;
3800         hdev->iso_cnt = hdev->iso_pkts;
3801
3802         BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3803                hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3804
3805         return rp->status;
3806 }
3807
3808 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3809                                    struct sk_buff *skb)
3810 {
3811         struct hci_rp_le_set_cig_params *rp = data;
3812         struct hci_conn *conn;
3813         int i = 0;
3814
3815         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3816
3817         hci_dev_lock(hdev);
3818
3819         if (rp->status) {
3820                 while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) {
3821                         conn->state = BT_CLOSED;
3822                         hci_connect_cfm(conn, rp->status);
3823                         hci_conn_del(conn);
3824                 }
3825                 goto unlock;
3826         }
3827
3828         rcu_read_lock();
3829
3830         list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
3831                 if (conn->type != ISO_LINK || conn->iso_qos.cig != rp->cig_id ||
3832                     conn->state == BT_CONNECTED)
3833                         continue;
3834
3835                 conn->handle = __le16_to_cpu(rp->handle[i++]);
3836
3837                 bt_dev_dbg(hdev, "%p handle 0x%4.4x link %p", conn,
3838                            conn->handle, conn->link);
3839
3840                 /* Create CIS if LE is already connected */
3841                 if (conn->link && conn->link->state == BT_CONNECTED)
3842                         hci_le_create_cis(conn->link);
3843
3844                 if (i == rp->num_handles)
3845                         break;
3846         }
3847
3848         rcu_read_unlock();
3849
3850 unlock:
3851         hci_dev_unlock(hdev);
3852
3853         return rp->status;
3854 }
3855
3856 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3857                                    struct sk_buff *skb)
3858 {
3859         struct hci_rp_le_setup_iso_path *rp = data;
3860         struct hci_cp_le_setup_iso_path *cp;
3861         struct hci_conn *conn;
3862
3863         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3864
3865         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3866         if (!cp)
3867                 return rp->status;
3868
3869         hci_dev_lock(hdev);
3870
3871         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3872         if (!conn)
3873                 goto unlock;
3874
3875         if (rp->status) {
3876                 hci_connect_cfm(conn, rp->status);
3877                 hci_conn_del(conn);
3878                 goto unlock;
3879         }
3880
3881         switch (cp->direction) {
3882         /* Input (Host to Controller) */
3883         case 0x00:
3884                 /* Only confirm connection if output only */
3885                 if (conn->iso_qos.out.sdu && !conn->iso_qos.in.sdu)
3886                         hci_connect_cfm(conn, rp->status);
3887                 break;
3888         /* Output (Controller to Host) */
3889         case 0x01:
3890                 /* Confirm connection since conn->iso_qos is always configured
3891                  * last.
3892                  */
3893                 hci_connect_cfm(conn, rp->status);
3894                 break;
3895         }
3896
3897 unlock:
3898         hci_dev_unlock(hdev);
3899         return rp->status;
3900 }
3901
3902 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
3903 {
3904         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3905 }
3906
3907 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
3908                                    struct sk_buff *skb)
3909 {
3910         struct hci_ev_status *rp = data;
3911         struct hci_cp_le_set_per_adv_params *cp;
3912
3913         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3914
3915         if (rp->status)
3916                 return rp->status;
3917
3918         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
3919         if (!cp)
3920                 return rp->status;
3921
3922         /* TODO: set the conn state */
3923         return rp->status;
3924 }
3925
3926 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
3927                                        struct sk_buff *skb)
3928 {
3929         struct hci_ev_status *rp = data;
3930         __u8 *sent;
3931
3932         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3933
3934         if (rp->status)
3935                 return rp->status;
3936
3937         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
3938         if (!sent)
3939                 return rp->status;
3940
3941         hci_dev_lock(hdev);
3942
3943         if (*sent)
3944                 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
3945         else
3946                 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
3947
3948         hci_dev_unlock(hdev);
3949
3950         return rp->status;
3951 }
3952
3953 #define HCI_CC_VL(_op, _func, _min, _max) \
3954 { \
3955         .op = _op, \
3956         .func = _func, \
3957         .min_len = _min, \
3958         .max_len = _max, \
3959 }
3960
3961 #define HCI_CC(_op, _func, _len) \
3962         HCI_CC_VL(_op, _func, _len, _len)
3963
3964 #define HCI_CC_STATUS(_op, _func) \
3965         HCI_CC(_op, _func, sizeof(struct hci_ev_status))
3966
3967 static const struct hci_cc {
3968         u16  op;
3969         u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
3970         u16  min_len;
3971         u16  max_len;
3972 } hci_cc_table[] = {
3973         HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
3974         HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
3975         HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
3976         HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
3977                       hci_cc_remote_name_req_cancel),
3978         HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
3979                sizeof(struct hci_rp_role_discovery)),
3980         HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
3981                sizeof(struct hci_rp_read_link_policy)),
3982         HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
3983                sizeof(struct hci_rp_write_link_policy)),
3984         HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
3985                sizeof(struct hci_rp_read_def_link_policy)),
3986         HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
3987                       hci_cc_write_def_link_policy),
3988         HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
3989         HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
3990                sizeof(struct hci_rp_read_stored_link_key)),
3991         HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
3992                sizeof(struct hci_rp_delete_stored_link_key)),
3993         HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
3994         HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
3995                sizeof(struct hci_rp_read_local_name)),
3996         HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
3997         HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
3998         HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
3999         HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4000         HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4001                sizeof(struct hci_rp_read_class_of_dev)),
4002         HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4003         HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4004                sizeof(struct hci_rp_read_voice_setting)),
4005         HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4006         HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4007                sizeof(struct hci_rp_read_num_supported_iac)),
4008         HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4009         HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4010         HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4011                sizeof(struct hci_rp_read_auth_payload_to)),
4012         HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4013                sizeof(struct hci_rp_write_auth_payload_to)),
4014         HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4015                sizeof(struct hci_rp_read_local_version)),
4016         HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4017                sizeof(struct hci_rp_read_local_commands)),
4018         HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4019                sizeof(struct hci_rp_read_local_features)),
4020         HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4021                sizeof(struct hci_rp_read_local_ext_features)),
4022         HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4023                sizeof(struct hci_rp_read_buffer_size)),
4024         HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4025                sizeof(struct hci_rp_read_bd_addr)),
4026         HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4027                sizeof(struct hci_rp_read_local_pairing_opts)),
4028         HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4029                sizeof(struct hci_rp_read_page_scan_activity)),
4030         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4031                       hci_cc_write_page_scan_activity),
4032         HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4033                sizeof(struct hci_rp_read_page_scan_type)),
4034         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4035         HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4036                sizeof(struct hci_rp_read_data_block_size)),
4037         HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4038                sizeof(struct hci_rp_read_flow_control_mode)),
4039         HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4040                sizeof(struct hci_rp_read_local_amp_info)),
4041         HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4042                sizeof(struct hci_rp_read_clock)),
4043         HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4044                sizeof(struct hci_rp_read_enc_key_size)),
4045         HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4046                sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4047         HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4048                hci_cc_read_def_err_data_reporting,
4049                sizeof(struct hci_rp_read_def_err_data_reporting)),
4050         HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4051                       hci_cc_write_def_err_data_reporting),
4052         HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4053                sizeof(struct hci_rp_pin_code_reply)),
4054         HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4055                sizeof(struct hci_rp_pin_code_neg_reply)),
4056         HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4057                sizeof(struct hci_rp_read_local_oob_data)),
4058         HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4059                sizeof(struct hci_rp_read_local_oob_ext_data)),
4060         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4061                sizeof(struct hci_rp_le_read_buffer_size)),
4062         HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4063                sizeof(struct hci_rp_le_read_local_features)),
4064         HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4065                sizeof(struct hci_rp_le_read_adv_tx_power)),
4066         HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4067                sizeof(struct hci_rp_user_confirm_reply)),
4068         HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4069                sizeof(struct hci_rp_user_confirm_reply)),
4070         HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4071                sizeof(struct hci_rp_user_confirm_reply)),
4072         HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4073                sizeof(struct hci_rp_user_confirm_reply)),
4074         HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4075         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4076         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4077         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4078         HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4079                hci_cc_le_read_accept_list_size,
4080                sizeof(struct hci_rp_le_read_accept_list_size)),
4081         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4082         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4083                       hci_cc_le_add_to_accept_list),
4084         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4085                       hci_cc_le_del_from_accept_list),
4086         HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4087                sizeof(struct hci_rp_le_read_supported_states)),
4088         HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4089                sizeof(struct hci_rp_le_read_def_data_len)),
4090         HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4091                       hci_cc_le_write_def_data_len),
4092         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4093                       hci_cc_le_add_to_resolv_list),
4094         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4095                       hci_cc_le_del_from_resolv_list),
4096         HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4097                       hci_cc_le_clear_resolv_list),
4098         HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4099                sizeof(struct hci_rp_le_read_resolv_list_size)),
4100         HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4101                       hci_cc_le_set_addr_resolution_enable),
4102         HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4103                sizeof(struct hci_rp_le_read_max_data_len)),
4104         HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4105                       hci_cc_write_le_host_supported),
4106         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4107         HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4108                sizeof(struct hci_rp_read_rssi)),
4109         HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4110                sizeof(struct hci_rp_read_tx_power)),
4111         HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4112         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4113                       hci_cc_le_set_ext_scan_param),
4114         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4115                       hci_cc_le_set_ext_scan_enable),
4116         HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4117         HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4118                hci_cc_le_read_num_adv_sets,
4119                sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4120         HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4121                sizeof(struct hci_rp_le_set_ext_adv_params)),
4122         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4123                       hci_cc_le_set_ext_adv_enable),
4124         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4125                       hci_cc_le_set_adv_set_random_addr),
4126         HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4127         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4128         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4129         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4130                       hci_cc_le_set_per_adv_enable),
4131         HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4132                sizeof(struct hci_rp_le_read_transmit_power)),
4133         HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4134         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4135                sizeof(struct hci_rp_le_read_buffer_size_v2)),
4136         HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4137                   sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4138         HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4139                sizeof(struct hci_rp_le_setup_iso_path)),
4140 };
4141
4142 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4143                       struct sk_buff *skb)
4144 {
4145         void *data;
4146
4147         if (skb->len < cc->min_len) {
4148                 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4149                            cc->op, skb->len, cc->min_len);
4150                 return HCI_ERROR_UNSPECIFIED;
4151         }
4152
4153         /* Just warn if the length is over max_len size it still be possible to
4154          * partially parse the cc so leave to callback to decide if that is
4155          * acceptable.
4156          */
4157         if (skb->len > cc->max_len)
4158                 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4159                             cc->op, skb->len, cc->max_len);
4160
4161         data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4162         if (!data)
4163                 return HCI_ERROR_UNSPECIFIED;
4164
4165         return cc->func(hdev, data, skb);
4166 }
4167
4168 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4169                                  struct sk_buff *skb, u16 *opcode, u8 *status,
4170                                  hci_req_complete_t *req_complete,
4171                                  hci_req_complete_skb_t *req_complete_skb)
4172 {
4173         struct hci_ev_cmd_complete *ev = data;
4174         int i;
4175
4176         *opcode = __le16_to_cpu(ev->opcode);
4177
4178         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4179
4180         for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4181                 if (hci_cc_table[i].op == *opcode) {
4182                         *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4183                         break;
4184                 }
4185         }
4186
4187         if (i == ARRAY_SIZE(hci_cc_table)) {
4188                 /* Unknown opcode, assume byte 0 contains the status, so
4189                  * that e.g. __hci_cmd_sync() properly returns errors
4190                  * for vendor specific commands send by HCI drivers.
4191                  * If a vendor doesn't actually follow this convention we may
4192                  * need to introduce a vendor CC table in order to properly set
4193                  * the status.
4194                  */
4195                 *status = skb->data[0];
4196         }
4197
4198         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4199
4200         hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4201                              req_complete_skb);
4202
4203         if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4204                 bt_dev_err(hdev,
4205                            "unexpected event for opcode 0x%4.4x", *opcode);
4206                 return;
4207         }
4208
4209         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4210                 queue_work(hdev->workqueue, &hdev->cmd_work);
4211 }
4212
4213 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4214 {
4215         struct hci_cp_le_create_cis *cp;
4216         int i;
4217
4218         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4219
4220         if (!status)
4221                 return;
4222
4223         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4224         if (!cp)
4225                 return;
4226
4227         hci_dev_lock(hdev);
4228
4229         /* Remove connection if command failed */
4230         for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4231                 struct hci_conn *conn;
4232                 u16 handle;
4233
4234                 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4235
4236                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4237                 if (conn) {
4238                         conn->state = BT_CLOSED;
4239                         hci_connect_cfm(conn, status);
4240                         hci_conn_del(conn);
4241                 }
4242         }
4243
4244         hci_dev_unlock(hdev);
4245 }
4246
4247 #define HCI_CS(_op, _func) \
4248 { \
4249         .op = _op, \
4250         .func = _func, \
4251 }
4252
4253 static const struct hci_cs {
4254         u16  op;
4255         void (*func)(struct hci_dev *hdev, __u8 status);
4256 } hci_cs_table[] = {
4257         HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4258         HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4259         HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4260         HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4261         HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4262         HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4263         HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4264         HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4265         HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4266                hci_cs_read_remote_ext_features),
4267         HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4268         HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4269                hci_cs_enhanced_setup_sync_conn),
4270         HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4271         HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4272         HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4273         HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4274         HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4275         HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4276         HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4277         HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4278         HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4279 };
4280
4281 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4282                                struct sk_buff *skb, u16 *opcode, u8 *status,
4283                                hci_req_complete_t *req_complete,
4284                                hci_req_complete_skb_t *req_complete_skb)
4285 {
4286         struct hci_ev_cmd_status *ev = data;
4287         int i;
4288
4289         *opcode = __le16_to_cpu(ev->opcode);
4290         *status = ev->status;
4291
4292         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4293
4294         for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4295                 if (hci_cs_table[i].op == *opcode) {
4296                         hci_cs_table[i].func(hdev, ev->status);
4297                         break;
4298                 }
4299         }
4300
4301         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4302
4303         /* Indicate request completion if the command failed. Also, if
4304          * we're not waiting for a special event and we get a success
4305          * command status we should try to flag the request as completed
4306          * (since for this kind of commands there will not be a command
4307          * complete event).
4308          */
4309         if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4310                 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4311                                      req_complete_skb);
4312                 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4313                         bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4314                                    *opcode);
4315                         return;
4316                 }
4317         }
4318
4319         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4320                 queue_work(hdev->workqueue, &hdev->cmd_work);
4321 }
4322
4323 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4324                                    struct sk_buff *skb)
4325 {
4326         struct hci_ev_hardware_error *ev = data;
4327
4328         bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4329
4330         hdev->hw_error_code = ev->code;
4331
4332         queue_work(hdev->req_workqueue, &hdev->error_reset);
4333 }
4334
4335 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4336                                 struct sk_buff *skb)
4337 {
4338         struct hci_ev_role_change *ev = data;
4339         struct hci_conn *conn;
4340
4341         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4342
4343         hci_dev_lock(hdev);
4344
4345         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4346         if (conn) {
4347                 if (!ev->status)
4348                         conn->role = ev->role;
4349
4350                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4351
4352                 hci_role_switch_cfm(conn, ev->status, ev->role);
4353         }
4354
4355         hci_dev_unlock(hdev);
4356 }
4357
4358 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4359                                   struct sk_buff *skb)
4360 {
4361         struct hci_ev_num_comp_pkts *ev = data;
4362         int i;
4363
4364         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4365                              flex_array_size(ev, handles, ev->num)))
4366                 return;
4367
4368         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4369                 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4370                 return;
4371         }
4372
4373         bt_dev_dbg(hdev, "num %d", ev->num);
4374
4375         for (i = 0; i < ev->num; i++) {
4376                 struct hci_comp_pkts_info *info = &ev->handles[i];
4377                 struct hci_conn *conn;
4378                 __u16  handle, count;
4379
4380                 handle = __le16_to_cpu(info->handle);
4381                 count  = __le16_to_cpu(info->count);
4382
4383                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4384                 if (!conn)
4385                         continue;
4386
4387                 conn->sent -= count;
4388
4389                 switch (conn->type) {
4390                 case ACL_LINK:
4391                         hdev->acl_cnt += count;
4392                         if (hdev->acl_cnt > hdev->acl_pkts)
4393                                 hdev->acl_cnt = hdev->acl_pkts;
4394                         break;
4395
4396                 case LE_LINK:
4397                         if (hdev->le_pkts) {
4398                                 hdev->le_cnt += count;
4399                                 if (hdev->le_cnt > hdev->le_pkts)
4400                                         hdev->le_cnt = hdev->le_pkts;
4401                         } else {
4402                                 hdev->acl_cnt += count;
4403                                 if (hdev->acl_cnt > hdev->acl_pkts)
4404                                         hdev->acl_cnt = hdev->acl_pkts;
4405                         }
4406                         break;
4407
4408                 case SCO_LINK:
4409                         hdev->sco_cnt += count;
4410                         if (hdev->sco_cnt > hdev->sco_pkts)
4411                                 hdev->sco_cnt = hdev->sco_pkts;
4412                         break;
4413
4414                 case ISO_LINK:
4415                         if (hdev->iso_pkts) {
4416                                 hdev->iso_cnt += count;
4417                                 if (hdev->iso_cnt > hdev->iso_pkts)
4418                                         hdev->iso_cnt = hdev->iso_pkts;
4419                         } else if (hdev->le_pkts) {
4420                                 hdev->le_cnt += count;
4421                                 if (hdev->le_cnt > hdev->le_pkts)
4422                                         hdev->le_cnt = hdev->le_pkts;
4423                         } else {
4424                                 hdev->acl_cnt += count;
4425                                 if (hdev->acl_cnt > hdev->acl_pkts)
4426                                         hdev->acl_cnt = hdev->acl_pkts;
4427                         }
4428                         break;
4429
4430                 default:
4431                         bt_dev_err(hdev, "unknown type %d conn %p",
4432                                    conn->type, conn);
4433                         break;
4434                 }
4435         }
4436
4437         queue_work(hdev->workqueue, &hdev->tx_work);
4438 }
4439
4440 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4441                                                  __u16 handle)
4442 {
4443         struct hci_chan *chan;
4444
4445         switch (hdev->dev_type) {
4446         case HCI_PRIMARY:
4447                 return hci_conn_hash_lookup_handle(hdev, handle);
4448         case HCI_AMP:
4449                 chan = hci_chan_lookup_handle(hdev, handle);
4450                 if (chan)
4451                         return chan->conn;
4452                 break;
4453         default:
4454                 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4455                 break;
4456         }
4457
4458         return NULL;
4459 }
4460
4461 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4462                                     struct sk_buff *skb)
4463 {
4464         struct hci_ev_num_comp_blocks *ev = data;
4465         int i;
4466
4467         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4468                              flex_array_size(ev, handles, ev->num_hndl)))
4469                 return;
4470
4471         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4472                 bt_dev_err(hdev, "wrong event for mode %d",
4473                            hdev->flow_ctl_mode);
4474                 return;
4475         }
4476
4477         bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4478                    ev->num_hndl);
4479
4480         for (i = 0; i < ev->num_hndl; i++) {
4481                 struct hci_comp_blocks_info *info = &ev->handles[i];
4482                 struct hci_conn *conn = NULL;
4483                 __u16  handle, block_count;
4484
4485                 handle = __le16_to_cpu(info->handle);
4486                 block_count = __le16_to_cpu(info->blocks);
4487
4488                 conn = __hci_conn_lookup_handle(hdev, handle);
4489                 if (!conn)
4490                         continue;
4491
4492                 conn->sent -= block_count;
4493
4494                 switch (conn->type) {
4495                 case ACL_LINK:
4496                 case AMP_LINK:
4497                         hdev->block_cnt += block_count;
4498                         if (hdev->block_cnt > hdev->num_blocks)
4499                                 hdev->block_cnt = hdev->num_blocks;
4500                         break;
4501
4502                 default:
4503                         bt_dev_err(hdev, "unknown type %d conn %p",
4504                                    conn->type, conn);
4505                         break;
4506                 }
4507         }
4508
4509         queue_work(hdev->workqueue, &hdev->tx_work);
4510 }
4511
4512 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4513                                 struct sk_buff *skb)
4514 {
4515         struct hci_ev_mode_change *ev = data;
4516         struct hci_conn *conn;
4517
4518         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4519
4520         hci_dev_lock(hdev);
4521
4522         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4523         if (conn) {
4524                 conn->mode = ev->mode;
4525
4526                 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4527                                         &conn->flags)) {
4528                         if (conn->mode == HCI_CM_ACTIVE)
4529                                 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4530                         else
4531                                 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4532                 }
4533
4534                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4535                         hci_sco_setup(conn, ev->status);
4536         }
4537
4538         hci_dev_unlock(hdev);
4539 }
4540
4541 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4542                                      struct sk_buff *skb)
4543 {
4544         struct hci_ev_pin_code_req *ev = data;
4545         struct hci_conn *conn;
4546
4547         bt_dev_dbg(hdev, "");
4548
4549         hci_dev_lock(hdev);
4550
4551         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4552         if (!conn)
4553                 goto unlock;
4554
4555         if (conn->state == BT_CONNECTED) {
4556                 hci_conn_hold(conn);
4557                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4558                 hci_conn_drop(conn);
4559         }
4560
4561         if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4562             !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4563                 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4564                              sizeof(ev->bdaddr), &ev->bdaddr);
4565         } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4566                 u8 secure;
4567
4568                 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4569                         secure = 1;
4570                 else
4571                         secure = 0;
4572
4573                 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4574         }
4575
4576 unlock:
4577         hci_dev_unlock(hdev);
4578 }
4579
4580 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4581 {
4582         if (key_type == HCI_LK_CHANGED_COMBINATION)
4583                 return;
4584
4585         conn->pin_length = pin_len;
4586         conn->key_type = key_type;
4587
4588         switch (key_type) {
4589         case HCI_LK_LOCAL_UNIT:
4590         case HCI_LK_REMOTE_UNIT:
4591         case HCI_LK_DEBUG_COMBINATION:
4592                 return;
4593         case HCI_LK_COMBINATION:
4594                 if (pin_len == 16)
4595                         conn->pending_sec_level = BT_SECURITY_HIGH;
4596                 else
4597                         conn->pending_sec_level = BT_SECURITY_MEDIUM;
4598                 break;
4599         case HCI_LK_UNAUTH_COMBINATION_P192:
4600         case HCI_LK_UNAUTH_COMBINATION_P256:
4601                 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4602                 break;
4603         case HCI_LK_AUTH_COMBINATION_P192:
4604                 conn->pending_sec_level = BT_SECURITY_HIGH;
4605                 break;
4606         case HCI_LK_AUTH_COMBINATION_P256:
4607                 conn->pending_sec_level = BT_SECURITY_FIPS;
4608                 break;
4609         }
4610 }
4611
4612 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4613                                      struct sk_buff *skb)
4614 {
4615         struct hci_ev_link_key_req *ev = data;
4616         struct hci_cp_link_key_reply cp;
4617         struct hci_conn *conn;
4618         struct link_key *key;
4619
4620         bt_dev_dbg(hdev, "");
4621
4622         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4623                 return;
4624
4625         hci_dev_lock(hdev);
4626
4627         key = hci_find_link_key(hdev, &ev->bdaddr);
4628         if (!key) {
4629                 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4630                 goto not_found;
4631         }
4632
4633         bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4634
4635         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4636         if (conn) {
4637                 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4638
4639                 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4640                      key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4641                     conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4642                         bt_dev_dbg(hdev, "ignoring unauthenticated key");
4643                         goto not_found;
4644                 }
4645
4646                 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4647                     (conn->pending_sec_level == BT_SECURITY_HIGH ||
4648                      conn->pending_sec_level == BT_SECURITY_FIPS)) {
4649                         bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4650                         goto not_found;
4651                 }
4652
4653                 conn_set_key(conn, key->type, key->pin_len);
4654         }
4655
4656         bacpy(&cp.bdaddr, &ev->bdaddr);
4657         memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4658
4659         hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4660
4661         hci_dev_unlock(hdev);
4662
4663         return;
4664
4665 not_found:
4666         hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4667         hci_dev_unlock(hdev);
4668 }
4669
4670 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4671                                     struct sk_buff *skb)
4672 {
4673         struct hci_ev_link_key_notify *ev = data;
4674         struct hci_conn *conn;
4675         struct link_key *key;
4676         bool persistent;
4677         u8 pin_len = 0;
4678
4679         bt_dev_dbg(hdev, "");
4680
4681         hci_dev_lock(hdev);
4682
4683         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4684         if (!conn)
4685                 goto unlock;
4686
4687         hci_conn_hold(conn);
4688         conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4689         hci_conn_drop(conn);
4690
4691         set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4692         conn_set_key(conn, ev->key_type, conn->pin_length);
4693
4694         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4695                 goto unlock;
4696
4697         key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4698                                 ev->key_type, pin_len, &persistent);
4699         if (!key)
4700                 goto unlock;
4701
4702         /* Update connection information since adding the key will have
4703          * fixed up the type in the case of changed combination keys.
4704          */
4705         if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4706                 conn_set_key(conn, key->type, key->pin_len);
4707
4708         mgmt_new_link_key(hdev, key, persistent);
4709
4710         /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4711          * is set. If it's not set simply remove the key from the kernel
4712          * list (we've still notified user space about it but with
4713          * store_hint being 0).
4714          */
4715         if (key->type == HCI_LK_DEBUG_COMBINATION &&
4716             !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4717                 list_del_rcu(&key->list);
4718                 kfree_rcu(key, rcu);
4719                 goto unlock;
4720         }
4721
4722         if (persistent)
4723                 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4724         else
4725                 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4726
4727 unlock:
4728         hci_dev_unlock(hdev);
4729 }
4730
4731 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4732                                  struct sk_buff *skb)
4733 {
4734         struct hci_ev_clock_offset *ev = data;
4735         struct hci_conn *conn;
4736
4737         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4738
4739         hci_dev_lock(hdev);
4740
4741         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4742         if (conn && !ev->status) {
4743                 struct inquiry_entry *ie;
4744
4745                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4746                 if (ie) {
4747                         ie->data.clock_offset = ev->clock_offset;
4748                         ie->timestamp = jiffies;
4749                 }
4750         }
4751
4752         hci_dev_unlock(hdev);
4753 }
4754
4755 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4756                                     struct sk_buff *skb)
4757 {
4758         struct hci_ev_pkt_type_change *ev = data;
4759         struct hci_conn *conn;
4760
4761         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4762
4763         hci_dev_lock(hdev);
4764
4765         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4766         if (conn && !ev->status)
4767                 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4768
4769         hci_dev_unlock(hdev);
4770 }
4771
4772 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4773                                    struct sk_buff *skb)
4774 {
4775         struct hci_ev_pscan_rep_mode *ev = data;
4776         struct inquiry_entry *ie;
4777
4778         bt_dev_dbg(hdev, "");
4779
4780         hci_dev_lock(hdev);
4781
4782         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4783         if (ie) {
4784                 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4785                 ie->timestamp = jiffies;
4786         }
4787
4788         hci_dev_unlock(hdev);
4789 }
4790
4791 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4792                                              struct sk_buff *skb)
4793 {
4794         struct hci_ev_inquiry_result_rssi *ev = edata;
4795         struct inquiry_data data;
4796         int i;
4797
4798         bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4799
4800         if (!ev->num)
4801                 return;
4802
4803         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4804                 return;
4805
4806         hci_dev_lock(hdev);
4807
4808         if (skb->len == array_size(ev->num,
4809                                    sizeof(struct inquiry_info_rssi_pscan))) {
4810                 struct inquiry_info_rssi_pscan *info;
4811
4812                 for (i = 0; i < ev->num; i++) {
4813                         u32 flags;
4814
4815                         info = hci_ev_skb_pull(hdev, skb,
4816                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4817                                                sizeof(*info));
4818                         if (!info) {
4819                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4820                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4821                                 goto unlock;
4822                         }
4823
4824                         bacpy(&data.bdaddr, &info->bdaddr);
4825                         data.pscan_rep_mode     = info->pscan_rep_mode;
4826                         data.pscan_period_mode  = info->pscan_period_mode;
4827                         data.pscan_mode         = info->pscan_mode;
4828                         memcpy(data.dev_class, info->dev_class, 3);
4829                         data.clock_offset       = info->clock_offset;
4830                         data.rssi               = info->rssi;
4831                         data.ssp_mode           = 0x00;
4832
4833                         flags = hci_inquiry_cache_update(hdev, &data, false);
4834
4835                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4836                                           info->dev_class, info->rssi,
4837                                           flags, NULL, 0, NULL, 0, 0);
4838                 }
4839         } else if (skb->len == array_size(ev->num,
4840                                           sizeof(struct inquiry_info_rssi))) {
4841                 struct inquiry_info_rssi *info;
4842
4843                 for (i = 0; i < ev->num; i++) {
4844                         u32 flags;
4845
4846                         info = hci_ev_skb_pull(hdev, skb,
4847                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4848                                                sizeof(*info));
4849                         if (!info) {
4850                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4851                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4852                                 goto unlock;
4853                         }
4854
4855                         bacpy(&data.bdaddr, &info->bdaddr);
4856                         data.pscan_rep_mode     = info->pscan_rep_mode;
4857                         data.pscan_period_mode  = info->pscan_period_mode;
4858                         data.pscan_mode         = 0x00;
4859                         memcpy(data.dev_class, info->dev_class, 3);
4860                         data.clock_offset       = info->clock_offset;
4861                         data.rssi               = info->rssi;
4862                         data.ssp_mode           = 0x00;
4863
4864                         flags = hci_inquiry_cache_update(hdev, &data, false);
4865
4866                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4867                                           info->dev_class, info->rssi,
4868                                           flags, NULL, 0, NULL, 0, 0);
4869                 }
4870         } else {
4871                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4872                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4873         }
4874 unlock:
4875         hci_dev_unlock(hdev);
4876 }
4877
4878 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
4879                                         struct sk_buff *skb)
4880 {
4881         struct hci_ev_remote_ext_features *ev = data;
4882         struct hci_conn *conn;
4883
4884         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4885
4886         hci_dev_lock(hdev);
4887
4888         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4889         if (!conn)
4890                 goto unlock;
4891
4892         if (ev->page < HCI_MAX_PAGES)
4893                 memcpy(conn->features[ev->page], ev->features, 8);
4894
4895         if (!ev->status && ev->page == 0x01) {
4896                 struct inquiry_entry *ie;
4897
4898                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4899                 if (ie)
4900                         ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4901
4902                 if (ev->features[0] & LMP_HOST_SSP) {
4903                         set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4904                 } else {
4905                         /* It is mandatory by the Bluetooth specification that
4906                          * Extended Inquiry Results are only used when Secure
4907                          * Simple Pairing is enabled, but some devices violate
4908                          * this.
4909                          *
4910                          * To make these devices work, the internal SSP
4911                          * enabled flag needs to be cleared if the remote host
4912                          * features do not indicate SSP support */
4913                         clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4914                 }
4915
4916                 if (ev->features[0] & LMP_HOST_SC)
4917                         set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
4918         }
4919
4920         if (conn->state != BT_CONFIG)
4921                 goto unlock;
4922
4923         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
4924                 struct hci_cp_remote_name_req cp;
4925                 memset(&cp, 0, sizeof(cp));
4926                 bacpy(&cp.bdaddr, &conn->dst);
4927                 cp.pscan_rep_mode = 0x02;
4928                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
4929         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4930                 mgmt_device_connected(hdev, conn, NULL, 0);
4931
4932         if (!hci_outgoing_auth_needed(hdev, conn)) {
4933                 conn->state = BT_CONNECTED;
4934                 hci_connect_cfm(conn, ev->status);
4935                 hci_conn_drop(conn);
4936         }
4937
4938 unlock:
4939         hci_dev_unlock(hdev);
4940 }
4941
4942 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
4943                                        struct sk_buff *skb)
4944 {
4945         struct hci_ev_sync_conn_complete *ev = data;
4946         struct hci_conn *conn;
4947         u8 status = ev->status;
4948
4949         switch (ev->link_type) {
4950         case SCO_LINK:
4951         case ESCO_LINK:
4952                 break;
4953         default:
4954                 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
4955                  * for HCI_Synchronous_Connection_Complete is limited to
4956                  * either SCO or eSCO
4957                  */
4958                 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
4959                 return;
4960         }
4961
4962         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4963
4964         hci_dev_lock(hdev);
4965
4966         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
4967         if (!conn) {
4968                 if (ev->link_type == ESCO_LINK)
4969                         goto unlock;
4970
4971                 /* When the link type in the event indicates SCO connection
4972                  * and lookup of the connection object fails, then check
4973                  * if an eSCO connection object exists.
4974                  *
4975                  * The core limits the synchronous connections to either
4976                  * SCO or eSCO. The eSCO connection is preferred and tried
4977                  * to be setup first and until successfully established,
4978                  * the link type will be hinted as eSCO.
4979                  */
4980                 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
4981                 if (!conn)
4982                         goto unlock;
4983         }
4984
4985         /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
4986          * Processing it more than once per connection can corrupt kernel memory.
4987          *
4988          * As the connection handle is set here for the first time, it indicates
4989          * whether the connection is already set up.
4990          */
4991         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
4992                 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
4993                 goto unlock;
4994         }
4995
4996         switch (status) {
4997         case 0x00:
4998                 conn->handle = __le16_to_cpu(ev->handle);
4999                 if (conn->handle > HCI_CONN_HANDLE_MAX) {
5000                         bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
5001                                    conn->handle, HCI_CONN_HANDLE_MAX);
5002                         status = HCI_ERROR_INVALID_PARAMETERS;
5003                         conn->state = BT_CLOSED;
5004                         break;
5005                 }
5006
5007                 conn->state  = BT_CONNECTED;
5008                 conn->type   = ev->link_type;
5009
5010                 hci_debugfs_create_conn(conn);
5011                 hci_conn_add_sysfs(conn);
5012                 break;
5013
5014         case 0x10:      /* Connection Accept Timeout */
5015         case 0x0d:      /* Connection Rejected due to Limited Resources */
5016         case 0x11:      /* Unsupported Feature or Parameter Value */
5017         case 0x1c:      /* SCO interval rejected */
5018         case 0x1a:      /* Unsupported Remote Feature */
5019         case 0x1e:      /* Invalid LMP Parameters */
5020         case 0x1f:      /* Unspecified error */
5021         case 0x20:      /* Unsupported LMP Parameter value */
5022                 if (conn->out) {
5023                         conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5024                                         (hdev->esco_type & EDR_ESCO_MASK);
5025                         if (hci_setup_sync(conn, conn->link->handle))
5026                                 goto unlock;
5027                 }
5028                 fallthrough;
5029
5030         default:
5031                 conn->state = BT_CLOSED;
5032                 break;
5033         }
5034
5035         bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5036         /* Notify only in case of SCO over HCI transport data path which
5037          * is zero and non-zero value shall be non-HCI transport data path
5038          */
5039         if (conn->codec.data_path == 0 && hdev->notify) {
5040                 switch (ev->air_mode) {
5041                 case 0x02:
5042                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5043                         break;
5044                 case 0x03:
5045                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5046                         break;
5047                 }
5048         }
5049
5050         hci_connect_cfm(conn, status);
5051         if (status)
5052                 hci_conn_del(conn);
5053
5054 unlock:
5055         hci_dev_unlock(hdev);
5056 }
5057
5058 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5059 {
5060         size_t parsed = 0;
5061
5062         while (parsed < eir_len) {
5063                 u8 field_len = eir[0];
5064
5065                 if (field_len == 0)
5066                         return parsed;
5067
5068                 parsed += field_len + 1;
5069                 eir += field_len + 1;
5070         }
5071
5072         return eir_len;
5073 }
5074
5075 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5076                                             struct sk_buff *skb)
5077 {
5078         struct hci_ev_ext_inquiry_result *ev = edata;
5079         struct inquiry_data data;
5080         size_t eir_len;
5081         int i;
5082
5083         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5084                              flex_array_size(ev, info, ev->num)))
5085                 return;
5086
5087         bt_dev_dbg(hdev, "num %d", ev->num);
5088
5089         if (!ev->num)
5090                 return;
5091
5092         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5093                 return;
5094
5095         hci_dev_lock(hdev);
5096
5097         for (i = 0; i < ev->num; i++) {
5098                 struct extended_inquiry_info *info = &ev->info[i];
5099                 u32 flags;
5100                 bool name_known;
5101
5102                 bacpy(&data.bdaddr, &info->bdaddr);
5103                 data.pscan_rep_mode     = info->pscan_rep_mode;
5104                 data.pscan_period_mode  = info->pscan_period_mode;
5105                 data.pscan_mode         = 0x00;
5106                 memcpy(data.dev_class, info->dev_class, 3);
5107                 data.clock_offset       = info->clock_offset;
5108                 data.rssi               = info->rssi;
5109                 data.ssp_mode           = 0x01;
5110
5111                 if (hci_dev_test_flag(hdev, HCI_MGMT))
5112                         name_known = eir_get_data(info->data,
5113                                                   sizeof(info->data),
5114                                                   EIR_NAME_COMPLETE, NULL);
5115                 else
5116                         name_known = true;
5117
5118                 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5119
5120                 eir_len = eir_get_length(info->data, sizeof(info->data));
5121
5122                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5123                                   info->dev_class, info->rssi,
5124                                   flags, info->data, eir_len, NULL, 0, 0);
5125         }
5126
5127         hci_dev_unlock(hdev);
5128 }
5129
5130 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5131                                          struct sk_buff *skb)
5132 {
5133         struct hci_ev_key_refresh_complete *ev = data;
5134         struct hci_conn *conn;
5135
5136         bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5137                    __le16_to_cpu(ev->handle));
5138
5139         hci_dev_lock(hdev);
5140
5141         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5142         if (!conn)
5143                 goto unlock;
5144
5145         /* For BR/EDR the necessary steps are taken through the
5146          * auth_complete event.
5147          */
5148         if (conn->type != LE_LINK)
5149                 goto unlock;
5150
5151         if (!ev->status)
5152                 conn->sec_level = conn->pending_sec_level;
5153
5154         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5155
5156         if (ev->status && conn->state == BT_CONNECTED) {
5157                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5158                 hci_conn_drop(conn);
5159                 goto unlock;
5160         }
5161
5162         if (conn->state == BT_CONFIG) {
5163                 if (!ev->status)
5164                         conn->state = BT_CONNECTED;
5165
5166                 hci_connect_cfm(conn, ev->status);
5167                 hci_conn_drop(conn);
5168         } else {
5169                 hci_auth_cfm(conn, ev->status);
5170
5171                 hci_conn_hold(conn);
5172                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5173                 hci_conn_drop(conn);
5174         }
5175
5176 unlock:
5177         hci_dev_unlock(hdev);
5178 }
5179
5180 static u8 hci_get_auth_req(struct hci_conn *conn)
5181 {
5182         /* If remote requests no-bonding follow that lead */
5183         if (conn->remote_auth == HCI_AT_NO_BONDING ||
5184             conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5185                 return conn->remote_auth | (conn->auth_type & 0x01);
5186
5187         /* If both remote and local have enough IO capabilities, require
5188          * MITM protection
5189          */
5190         if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5191             conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5192                 return conn->remote_auth | 0x01;
5193
5194         /* No MITM protection possible so ignore remote requirement */
5195         return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5196 }
5197
5198 static u8 bredr_oob_data_present(struct hci_conn *conn)
5199 {
5200         struct hci_dev *hdev = conn->hdev;
5201         struct oob_data *data;
5202
5203         data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5204         if (!data)
5205                 return 0x00;
5206
5207         if (bredr_sc_enabled(hdev)) {
5208                 /* When Secure Connections is enabled, then just
5209                  * return the present value stored with the OOB
5210                  * data. The stored value contains the right present
5211                  * information. However it can only be trusted when
5212                  * not in Secure Connection Only mode.
5213                  */
5214                 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5215                         return data->present;
5216
5217                 /* When Secure Connections Only mode is enabled, then
5218                  * the P-256 values are required. If they are not
5219                  * available, then do not declare that OOB data is
5220                  * present.
5221                  */
5222                 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
5223                     !memcmp(data->hash256, ZERO_KEY, 16))
5224                         return 0x00;
5225
5226                 return 0x02;
5227         }
5228
5229         /* When Secure Connections is not enabled or actually
5230          * not supported by the hardware, then check that if
5231          * P-192 data values are present.
5232          */
5233         if (!memcmp(data->rand192, ZERO_KEY, 16) ||
5234             !memcmp(data->hash192, ZERO_KEY, 16))
5235                 return 0x00;
5236
5237         return 0x01;
5238 }
5239
5240 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5241                                     struct sk_buff *skb)
5242 {
5243         struct hci_ev_io_capa_request *ev = data;
5244         struct hci_conn *conn;
5245
5246         bt_dev_dbg(hdev, "");
5247
5248         hci_dev_lock(hdev);
5249
5250         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5251         if (!conn)
5252                 goto unlock;
5253
5254         hci_conn_hold(conn);
5255
5256         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5257                 goto unlock;
5258
5259         /* Allow pairing if we're pairable, the initiators of the
5260          * pairing or if the remote is not requesting bonding.
5261          */
5262         if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5263             test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5264             (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5265                 struct hci_cp_io_capability_reply cp;
5266
5267                 bacpy(&cp.bdaddr, &ev->bdaddr);
5268                 /* Change the IO capability from KeyboardDisplay
5269                  * to DisplayYesNo as it is not supported by BT spec. */
5270                 cp.capability = (conn->io_capability == 0x04) ?
5271                                 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5272
5273                 /* If we are initiators, there is no remote information yet */
5274                 if (conn->remote_auth == 0xff) {
5275                         /* Request MITM protection if our IO caps allow it
5276                          * except for the no-bonding case.
5277                          */
5278                         if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5279                             conn->auth_type != HCI_AT_NO_BONDING)
5280                                 conn->auth_type |= 0x01;
5281                 } else {
5282                         conn->auth_type = hci_get_auth_req(conn);
5283                 }
5284
5285                 /* If we're not bondable, force one of the non-bondable
5286                  * authentication requirement values.
5287                  */
5288                 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5289                         conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5290
5291                 cp.authentication = conn->auth_type;
5292                 cp.oob_data = bredr_oob_data_present(conn);
5293
5294                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5295                              sizeof(cp), &cp);
5296         } else {
5297                 struct hci_cp_io_capability_neg_reply cp;
5298
5299                 bacpy(&cp.bdaddr, &ev->bdaddr);
5300                 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5301
5302                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5303                              sizeof(cp), &cp);
5304         }
5305
5306 unlock:
5307         hci_dev_unlock(hdev);
5308 }
5309
5310 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5311                                   struct sk_buff *skb)
5312 {
5313         struct hci_ev_io_capa_reply *ev = data;
5314         struct hci_conn *conn;
5315
5316         bt_dev_dbg(hdev, "");
5317
5318         hci_dev_lock(hdev);
5319
5320         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5321         if (!conn)
5322                 goto unlock;
5323
5324         conn->remote_cap = ev->capability;
5325         conn->remote_auth = ev->authentication;
5326
5327 unlock:
5328         hci_dev_unlock(hdev);
5329 }
5330
5331 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5332                                          struct sk_buff *skb)
5333 {
5334         struct hci_ev_user_confirm_req *ev = data;
5335         int loc_mitm, rem_mitm, confirm_hint = 0;
5336         struct hci_conn *conn;
5337
5338         bt_dev_dbg(hdev, "");
5339
5340         hci_dev_lock(hdev);
5341
5342         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5343                 goto unlock;
5344
5345         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5346         if (!conn)
5347                 goto unlock;
5348
5349         loc_mitm = (conn->auth_type & 0x01);
5350         rem_mitm = (conn->remote_auth & 0x01);
5351
5352         /* If we require MITM but the remote device can't provide that
5353          * (it has NoInputNoOutput) then reject the confirmation
5354          * request. We check the security level here since it doesn't
5355          * necessarily match conn->auth_type.
5356          */
5357         if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5358             conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5359                 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5360                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5361                              sizeof(ev->bdaddr), &ev->bdaddr);
5362                 goto unlock;
5363         }
5364
5365         /* If no side requires MITM protection; auto-accept */
5366         if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5367             (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5368
5369                 /* If we're not the initiators request authorization to
5370                  * proceed from user space (mgmt_user_confirm with
5371                  * confirm_hint set to 1). The exception is if neither
5372                  * side had MITM or if the local IO capability is
5373                  * NoInputNoOutput, in which case we do auto-accept
5374                  */
5375                 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5376                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5377                     (loc_mitm || rem_mitm)) {
5378                         bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5379                         confirm_hint = 1;
5380                         goto confirm;
5381                 }
5382
5383                 /* If there already exists link key in local host, leave the
5384                  * decision to user space since the remote device could be
5385                  * legitimate or malicious.
5386                  */
5387                 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5388                         bt_dev_dbg(hdev, "Local host already has link key");
5389                         confirm_hint = 1;
5390                         goto confirm;
5391                 }
5392
5393                 BT_DBG("Auto-accept of user confirmation with %ums delay",
5394                        hdev->auto_accept_delay);
5395
5396                 if (hdev->auto_accept_delay > 0) {
5397                         int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5398                         queue_delayed_work(conn->hdev->workqueue,
5399                                            &conn->auto_accept_work, delay);
5400                         goto unlock;
5401                 }
5402
5403                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5404                              sizeof(ev->bdaddr), &ev->bdaddr);
5405                 goto unlock;
5406         }
5407
5408 confirm:
5409         mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5410                                   le32_to_cpu(ev->passkey), confirm_hint);
5411
5412 unlock:
5413         hci_dev_unlock(hdev);
5414 }
5415
5416 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5417                                          struct sk_buff *skb)
5418 {
5419         struct hci_ev_user_passkey_req *ev = data;
5420
5421         bt_dev_dbg(hdev, "");
5422
5423         if (hci_dev_test_flag(hdev, HCI_MGMT))
5424                 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5425 }
5426
5427 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5428                                         struct sk_buff *skb)
5429 {
5430         struct hci_ev_user_passkey_notify *ev = data;
5431         struct hci_conn *conn;
5432
5433         bt_dev_dbg(hdev, "");
5434
5435         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5436         if (!conn)
5437                 return;
5438
5439         conn->passkey_notify = __le32_to_cpu(ev->passkey);
5440         conn->passkey_entered = 0;
5441
5442         if (hci_dev_test_flag(hdev, HCI_MGMT))
5443                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5444                                          conn->dst_type, conn->passkey_notify,
5445                                          conn->passkey_entered);
5446 }
5447
5448 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5449                                     struct sk_buff *skb)
5450 {
5451         struct hci_ev_keypress_notify *ev = data;
5452         struct hci_conn *conn;
5453
5454         bt_dev_dbg(hdev, "");
5455
5456         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5457         if (!conn)
5458                 return;
5459
5460         switch (ev->type) {
5461         case HCI_KEYPRESS_STARTED:
5462                 conn->passkey_entered = 0;
5463                 return;
5464
5465         case HCI_KEYPRESS_ENTERED:
5466                 conn->passkey_entered++;
5467                 break;
5468
5469         case HCI_KEYPRESS_ERASED:
5470                 conn->passkey_entered--;
5471                 break;
5472
5473         case HCI_KEYPRESS_CLEARED:
5474                 conn->passkey_entered = 0;
5475                 break;
5476
5477         case HCI_KEYPRESS_COMPLETED:
5478                 return;
5479         }
5480
5481         if (hci_dev_test_flag(hdev, HCI_MGMT))
5482                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5483                                          conn->dst_type, conn->passkey_notify,
5484                                          conn->passkey_entered);
5485 }
5486
5487 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5488                                          struct sk_buff *skb)
5489 {
5490         struct hci_ev_simple_pair_complete *ev = data;
5491         struct hci_conn *conn;
5492
5493         bt_dev_dbg(hdev, "");
5494
5495         hci_dev_lock(hdev);
5496
5497         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5498         if (!conn)
5499                 goto unlock;
5500
5501         /* Reset the authentication requirement to unknown */
5502         conn->remote_auth = 0xff;
5503
5504         /* To avoid duplicate auth_failed events to user space we check
5505          * the HCI_CONN_AUTH_PEND flag which will be set if we
5506          * initiated the authentication. A traditional auth_complete
5507          * event gets always produced as initiator and is also mapped to
5508          * the mgmt_auth_failed event */
5509         if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5510                 mgmt_auth_failed(conn, ev->status);
5511
5512         hci_conn_drop(conn);
5513
5514 unlock:
5515         hci_dev_unlock(hdev);
5516 }
5517
5518 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5519                                          struct sk_buff *skb)
5520 {
5521         struct hci_ev_remote_host_features *ev = data;
5522         struct inquiry_entry *ie;
5523         struct hci_conn *conn;
5524
5525         bt_dev_dbg(hdev, "");
5526
5527         hci_dev_lock(hdev);
5528
5529         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5530         if (conn)
5531                 memcpy(conn->features[1], ev->features, 8);
5532
5533         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5534         if (ie)
5535                 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5536
5537         hci_dev_unlock(hdev);
5538 }
5539
5540 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5541                                             struct sk_buff *skb)
5542 {
5543         struct hci_ev_remote_oob_data_request *ev = edata;
5544         struct oob_data *data;
5545
5546         bt_dev_dbg(hdev, "");
5547
5548         hci_dev_lock(hdev);
5549
5550         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5551                 goto unlock;
5552
5553         data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5554         if (!data) {
5555                 struct hci_cp_remote_oob_data_neg_reply cp;
5556
5557                 bacpy(&cp.bdaddr, &ev->bdaddr);
5558                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5559                              sizeof(cp), &cp);
5560                 goto unlock;
5561         }
5562
5563         if (bredr_sc_enabled(hdev)) {
5564                 struct hci_cp_remote_oob_ext_data_reply cp;
5565
5566                 bacpy(&cp.bdaddr, &ev->bdaddr);
5567                 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5568                         memset(cp.hash192, 0, sizeof(cp.hash192));
5569                         memset(cp.rand192, 0, sizeof(cp.rand192));
5570                 } else {
5571                         memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5572                         memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5573                 }
5574                 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5575                 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5576
5577                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5578                              sizeof(cp), &cp);
5579         } else {
5580                 struct hci_cp_remote_oob_data_reply cp;
5581
5582                 bacpy(&cp.bdaddr, &ev->bdaddr);
5583                 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5584                 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5585
5586                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5587                              sizeof(cp), &cp);
5588         }
5589
5590 unlock:
5591         hci_dev_unlock(hdev);
5592 }
5593
5594 #if IS_ENABLED(CONFIG_BT_HS)
5595 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5596                                   struct sk_buff *skb)
5597 {
5598         struct hci_ev_channel_selected *ev = data;
5599         struct hci_conn *hcon;
5600
5601         bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5602
5603         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5604         if (!hcon)
5605                 return;
5606
5607         amp_read_loc_assoc_final_data(hdev, hcon);
5608 }
5609
5610 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5611                                       struct sk_buff *skb)
5612 {
5613         struct hci_ev_phy_link_complete *ev = data;
5614         struct hci_conn *hcon, *bredr_hcon;
5615
5616         bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5617                    ev->status);
5618
5619         hci_dev_lock(hdev);
5620
5621         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5622         if (!hcon)
5623                 goto unlock;
5624
5625         if (!hcon->amp_mgr)
5626                 goto unlock;
5627
5628         if (ev->status) {
5629                 hci_conn_del(hcon);
5630                 goto unlock;
5631         }
5632
5633         bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5634
5635         hcon->state = BT_CONNECTED;
5636         bacpy(&hcon->dst, &bredr_hcon->dst);
5637
5638         hci_conn_hold(hcon);
5639         hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5640         hci_conn_drop(hcon);
5641
5642         hci_debugfs_create_conn(hcon);
5643         hci_conn_add_sysfs(hcon);
5644
5645         amp_physical_cfm(bredr_hcon, hcon);
5646
5647 unlock:
5648         hci_dev_unlock(hdev);
5649 }
5650
5651 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5652                                      struct sk_buff *skb)
5653 {
5654         struct hci_ev_logical_link_complete *ev = data;
5655         struct hci_conn *hcon;
5656         struct hci_chan *hchan;
5657         struct amp_mgr *mgr;
5658
5659         bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5660                    le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5661
5662         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5663         if (!hcon)
5664                 return;
5665
5666         /* Create AMP hchan */
5667         hchan = hci_chan_create(hcon);
5668         if (!hchan)
5669                 return;
5670
5671         hchan->handle = le16_to_cpu(ev->handle);
5672         hchan->amp = true;
5673
5674         BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5675
5676         mgr = hcon->amp_mgr;
5677         if (mgr && mgr->bredr_chan) {
5678                 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5679
5680                 l2cap_chan_lock(bredr_chan);
5681
5682                 bredr_chan->conn->mtu = hdev->block_mtu;
5683                 l2cap_logical_cfm(bredr_chan, hchan, 0);
5684                 hci_conn_hold(hcon);
5685
5686                 l2cap_chan_unlock(bredr_chan);
5687         }
5688 }
5689
5690 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5691                                              struct sk_buff *skb)
5692 {
5693         struct hci_ev_disconn_logical_link_complete *ev = data;
5694         struct hci_chan *hchan;
5695
5696         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5697                    le16_to_cpu(ev->handle), ev->status);
5698
5699         if (ev->status)
5700                 return;
5701
5702         hci_dev_lock(hdev);
5703
5704         hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5705         if (!hchan || !hchan->amp)
5706                 goto unlock;
5707
5708         amp_destroy_logical_link(hchan, ev->reason);
5709
5710 unlock:
5711         hci_dev_unlock(hdev);
5712 }
5713
5714 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5715                                              struct sk_buff *skb)
5716 {
5717         struct hci_ev_disconn_phy_link_complete *ev = data;
5718         struct hci_conn *hcon;
5719
5720         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5721
5722         if (ev->status)
5723                 return;
5724
5725         hci_dev_lock(hdev);
5726
5727         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5728         if (hcon && hcon->type == AMP_LINK) {
5729                 hcon->state = BT_CLOSED;
5730                 hci_disconn_cfm(hcon, ev->reason);
5731                 hci_conn_del(hcon);
5732         }
5733
5734         hci_dev_unlock(hdev);
5735 }
5736 #endif
5737
5738 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5739                                 u8 bdaddr_type, bdaddr_t *local_rpa)
5740 {
5741         if (conn->out) {
5742                 conn->dst_type = bdaddr_type;
5743                 conn->resp_addr_type = bdaddr_type;
5744                 bacpy(&conn->resp_addr, bdaddr);
5745
5746                 /* Check if the controller has set a Local RPA then it must be
5747                  * used instead or hdev->rpa.
5748                  */
5749                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5750                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5751                         bacpy(&conn->init_addr, local_rpa);
5752                 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5753                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5754                         bacpy(&conn->init_addr, &conn->hdev->rpa);
5755                 } else {
5756                         hci_copy_identity_address(conn->hdev, &conn->init_addr,
5757                                                   &conn->init_addr_type);
5758                 }
5759         } else {
5760                 conn->resp_addr_type = conn->hdev->adv_addr_type;
5761                 /* Check if the controller has set a Local RPA then it must be
5762                  * used instead or hdev->rpa.
5763                  */
5764                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5765                         conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5766                         bacpy(&conn->resp_addr, local_rpa);
5767                 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5768                         /* In case of ext adv, resp_addr will be updated in
5769                          * Adv Terminated event.
5770                          */
5771                         if (!ext_adv_capable(conn->hdev))
5772                                 bacpy(&conn->resp_addr,
5773                                       &conn->hdev->random_addr);
5774                 } else {
5775                         bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5776                 }
5777
5778                 conn->init_addr_type = bdaddr_type;
5779                 bacpy(&conn->init_addr, bdaddr);
5780
5781                 /* For incoming connections, set the default minimum
5782                  * and maximum connection interval. They will be used
5783                  * to check if the parameters are in range and if not
5784                  * trigger the connection update procedure.
5785                  */
5786                 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5787                 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5788         }
5789 }
5790
5791 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5792                                  bdaddr_t *bdaddr, u8 bdaddr_type,
5793                                  bdaddr_t *local_rpa, u8 role, u16 handle,
5794                                  u16 interval, u16 latency,
5795                                  u16 supervision_timeout)
5796 {
5797         struct hci_conn_params *params;
5798         struct hci_conn *conn;
5799         struct smp_irk *irk;
5800         u8 addr_type;
5801
5802         hci_dev_lock(hdev);
5803
5804         /* All controllers implicitly stop advertising in the event of a
5805          * connection, so ensure that the state bit is cleared.
5806          */
5807         hci_dev_clear_flag(hdev, HCI_LE_ADV);
5808
5809         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
5810         if (!conn) {
5811                 /* In case of error status and there is no connection pending
5812                  * just unlock as there is nothing to cleanup.
5813                  */
5814                 if (status)
5815                         goto unlock;
5816
5817                 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role);
5818                 if (!conn) {
5819                         bt_dev_err(hdev, "no memory for new connection");
5820                         goto unlock;
5821                 }
5822
5823                 conn->dst_type = bdaddr_type;
5824
5825                 /* If we didn't have a hci_conn object previously
5826                  * but we're in central role this must be something
5827                  * initiated using an accept list. Since accept list based
5828                  * connections are not "first class citizens" we don't
5829                  * have full tracking of them. Therefore, we go ahead
5830                  * with a "best effort" approach of determining the
5831                  * initiator address based on the HCI_PRIVACY flag.
5832                  */
5833                 if (conn->out) {
5834                         conn->resp_addr_type = bdaddr_type;
5835                         bacpy(&conn->resp_addr, bdaddr);
5836                         if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5837                                 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5838                                 bacpy(&conn->init_addr, &hdev->rpa);
5839                         } else {
5840                                 hci_copy_identity_address(hdev,
5841                                                           &conn->init_addr,
5842                                                           &conn->init_addr_type);
5843                         }
5844                 }
5845         } else {
5846                 cancel_delayed_work(&conn->le_conn_timeout);
5847         }
5848
5849         /* The HCI_LE_Connection_Complete event is only sent once per connection.
5850          * Processing it more than once per connection can corrupt kernel memory.
5851          *
5852          * As the connection handle is set here for the first time, it indicates
5853          * whether the connection is already set up.
5854          */
5855         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
5856                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
5857                 goto unlock;
5858         }
5859
5860         le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
5861
5862         /* Lookup the identity address from the stored connection
5863          * address and address type.
5864          *
5865          * When establishing connections to an identity address, the
5866          * connection procedure will store the resolvable random
5867          * address first. Now if it can be converted back into the
5868          * identity address, start using the identity address from
5869          * now on.
5870          */
5871         irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
5872         if (irk) {
5873                 bacpy(&conn->dst, &irk->bdaddr);
5874                 conn->dst_type = irk->addr_type;
5875         }
5876
5877         conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
5878
5879         if (handle > HCI_CONN_HANDLE_MAX) {
5880                 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle,
5881                            HCI_CONN_HANDLE_MAX);
5882                 status = HCI_ERROR_INVALID_PARAMETERS;
5883         }
5884
5885         /* All connection failure handling is taken care of by the
5886          * hci_conn_failed function which is triggered by the HCI
5887          * request completion callbacks used for connecting.
5888          */
5889         if (status)
5890                 goto unlock;
5891
5892         if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
5893                 addr_type = BDADDR_LE_PUBLIC;
5894         else
5895                 addr_type = BDADDR_LE_RANDOM;
5896
5897         /* Drop the connection if the device is blocked */
5898         if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
5899                 hci_conn_drop(conn);
5900                 goto unlock;
5901         }
5902
5903         if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5904                 mgmt_device_connected(hdev, conn, NULL, 0);
5905
5906         conn->sec_level = BT_SECURITY_LOW;
5907         conn->handle = handle;
5908         conn->state = BT_CONFIG;
5909
5910         /* Store current advertising instance as connection advertising instance
5911          * when sotfware rotation is in use so it can be re-enabled when
5912          * disconnected.
5913          */
5914         if (!ext_adv_capable(hdev))
5915                 conn->adv_instance = hdev->cur_adv_instance;
5916
5917         conn->le_conn_interval = interval;
5918         conn->le_conn_latency = latency;
5919         conn->le_supv_timeout = supervision_timeout;
5920
5921         hci_debugfs_create_conn(conn);
5922         hci_conn_add_sysfs(conn);
5923
5924         /* The remote features procedure is defined for central
5925          * role only. So only in case of an initiated connection
5926          * request the remote features.
5927          *
5928          * If the local controller supports peripheral-initiated features
5929          * exchange, then requesting the remote features in peripheral
5930          * role is possible. Otherwise just transition into the
5931          * connected state without requesting the remote features.
5932          */
5933         if (conn->out ||
5934             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
5935                 struct hci_cp_le_read_remote_features cp;
5936
5937                 cp.handle = __cpu_to_le16(conn->handle);
5938
5939                 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
5940                              sizeof(cp), &cp);
5941
5942                 hci_conn_hold(conn);
5943         } else {
5944                 conn->state = BT_CONNECTED;
5945                 hci_connect_cfm(conn, status);
5946         }
5947
5948         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
5949                                            conn->dst_type);
5950         if (params) {
5951                 list_del_init(&params->action);
5952                 if (params->conn) {
5953                         hci_conn_drop(params->conn);
5954                         hci_conn_put(params->conn);
5955                         params->conn = NULL;
5956                 }
5957         }
5958
5959 unlock:
5960         hci_update_passive_scan(hdev);
5961         hci_dev_unlock(hdev);
5962 }
5963
5964 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
5965                                      struct sk_buff *skb)
5966 {
5967         struct hci_ev_le_conn_complete *ev = data;
5968
5969         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5970
5971         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
5972                              NULL, ev->role, le16_to_cpu(ev->handle),
5973                              le16_to_cpu(ev->interval),
5974                              le16_to_cpu(ev->latency),
5975                              le16_to_cpu(ev->supervision_timeout));
5976 }
5977
5978 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
5979                                          struct sk_buff *skb)
5980 {
5981         struct hci_ev_le_enh_conn_complete *ev = data;
5982
5983         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5984
5985         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
5986                              &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
5987                              le16_to_cpu(ev->interval),
5988                              le16_to_cpu(ev->latency),
5989                              le16_to_cpu(ev->supervision_timeout));
5990 }
5991
5992 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
5993                                     struct sk_buff *skb)
5994 {
5995         struct hci_evt_le_ext_adv_set_term *ev = data;
5996         struct hci_conn *conn;
5997         struct adv_info *adv, *n;
5998
5999         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6000
6001         /* The Bluetooth Core 5.3 specification clearly states that this event
6002          * shall not be sent when the Host disables the advertising set. So in
6003          * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6004          *
6005          * When the Host disables an advertising set, all cleanup is done via
6006          * its command callback and not needed to be duplicated here.
6007          */
6008         if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6009                 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6010                 return;
6011         }
6012
6013         hci_dev_lock(hdev);
6014
6015         adv = hci_find_adv_instance(hdev, ev->handle);
6016
6017         if (ev->status) {
6018                 if (!adv)
6019                         goto unlock;
6020
6021                 /* Remove advertising as it has been terminated */
6022                 hci_remove_adv_instance(hdev, ev->handle);
6023                 mgmt_advertising_removed(NULL, hdev, ev->handle);
6024
6025                 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6026                         if (adv->enabled)
6027                                 goto unlock;
6028                 }
6029
6030                 /* We are no longer advertising, clear HCI_LE_ADV */
6031                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6032                 goto unlock;
6033         }
6034
6035         if (adv)
6036                 adv->enabled = false;
6037
6038         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6039         if (conn) {
6040                 /* Store handle in the connection so the correct advertising
6041                  * instance can be re-enabled when disconnected.
6042                  */
6043                 conn->adv_instance = ev->handle;
6044
6045                 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6046                     bacmp(&conn->resp_addr, BDADDR_ANY))
6047                         goto unlock;
6048
6049                 if (!ev->handle) {
6050                         bacpy(&conn->resp_addr, &hdev->random_addr);
6051                         goto unlock;
6052                 }
6053
6054                 if (adv)
6055                         bacpy(&conn->resp_addr, &adv->random_addr);
6056         }
6057
6058 unlock:
6059         hci_dev_unlock(hdev);
6060 }
6061
6062 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6063                                             struct sk_buff *skb)
6064 {
6065         struct hci_ev_le_conn_update_complete *ev = data;
6066         struct hci_conn *conn;
6067
6068         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6069
6070         if (ev->status)
6071                 return;
6072
6073         hci_dev_lock(hdev);
6074
6075         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6076         if (conn) {
6077                 conn->le_conn_interval = le16_to_cpu(ev->interval);
6078                 conn->le_conn_latency = le16_to_cpu(ev->latency);
6079                 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6080         }
6081
6082         hci_dev_unlock(hdev);
6083 }
6084
6085 /* This function requires the caller holds hdev->lock */
6086 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6087                                               bdaddr_t *addr,
6088                                               u8 addr_type, bool addr_resolved,
6089                                               u8 adv_type)
6090 {
6091         struct hci_conn *conn;
6092         struct hci_conn_params *params;
6093
6094         /* If the event is not connectable don't proceed further */
6095         if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6096                 return NULL;
6097
6098         /* Ignore if the device is blocked or hdev is suspended */
6099         if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6100             hdev->suspended)
6101                 return NULL;
6102
6103         /* Most controller will fail if we try to create new connections
6104          * while we have an existing one in peripheral role.
6105          */
6106         if (hdev->conn_hash.le_num_peripheral > 0 &&
6107             (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6108              !(hdev->le_states[3] & 0x10)))
6109                 return NULL;
6110
6111         /* If we're not connectable only connect devices that we have in
6112          * our pend_le_conns list.
6113          */
6114         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6115                                            addr_type);
6116         if (!params)
6117                 return NULL;
6118
6119         if (!params->explicit_connect) {
6120                 switch (params->auto_connect) {
6121                 case HCI_AUTO_CONN_DIRECT:
6122                         /* Only devices advertising with ADV_DIRECT_IND are
6123                          * triggering a connection attempt. This is allowing
6124                          * incoming connections from peripheral devices.
6125                          */
6126                         if (adv_type != LE_ADV_DIRECT_IND)
6127                                 return NULL;
6128                         break;
6129                 case HCI_AUTO_CONN_ALWAYS:
6130                         /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6131                          * are triggering a connection attempt. This means
6132                          * that incoming connections from peripheral device are
6133                          * accepted and also outgoing connections to peripheral
6134                          * devices are established when found.
6135                          */
6136                         break;
6137                 default:
6138                         return NULL;
6139                 }
6140         }
6141
6142         conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6143                               BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6144                               HCI_ROLE_MASTER);
6145         if (!IS_ERR(conn)) {
6146                 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6147                  * by higher layer that tried to connect, if no then
6148                  * store the pointer since we don't really have any
6149                  * other owner of the object besides the params that
6150                  * triggered it. This way we can abort the connection if
6151                  * the parameters get removed and keep the reference
6152                  * count consistent once the connection is established.
6153                  */
6154
6155                 if (!params->explicit_connect)
6156                         params->conn = hci_conn_get(conn);
6157
6158                 return conn;
6159         }
6160
6161         switch (PTR_ERR(conn)) {
6162         case -EBUSY:
6163                 /* If hci_connect() returns -EBUSY it means there is already
6164                  * an LE connection attempt going on. Since controllers don't
6165                  * support more than one connection attempt at the time, we
6166                  * don't consider this an error case.
6167                  */
6168                 break;
6169         default:
6170                 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6171                 return NULL;
6172         }
6173
6174         return NULL;
6175 }
6176
6177 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6178                                u8 bdaddr_type, bdaddr_t *direct_addr,
6179                                u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6180                                bool ext_adv, bool ctl_time, u64 instant)
6181 {
6182         struct discovery_state *d = &hdev->discovery;
6183         struct smp_irk *irk;
6184         struct hci_conn *conn;
6185         bool match, bdaddr_resolved;
6186         u32 flags;
6187         u8 *ptr;
6188
6189         switch (type) {
6190         case LE_ADV_IND:
6191         case LE_ADV_DIRECT_IND:
6192         case LE_ADV_SCAN_IND:
6193         case LE_ADV_NONCONN_IND:
6194         case LE_ADV_SCAN_RSP:
6195                 break;
6196         default:
6197                 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6198                                        "type: 0x%02x", type);
6199                 return;
6200         }
6201
6202         if (!ext_adv && len > HCI_MAX_AD_LENGTH) {
6203                 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes");
6204                 return;
6205         }
6206
6207         /* Find the end of the data in case the report contains padded zero
6208          * bytes at the end causing an invalid length value.
6209          *
6210          * When data is NULL, len is 0 so there is no need for extra ptr
6211          * check as 'ptr < data + 0' is already false in such case.
6212          */
6213         for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6214                 if (ptr + 1 + *ptr > data + len)
6215                         break;
6216         }
6217
6218         /* Adjust for actual length. This handles the case when remote
6219          * device is advertising with incorrect data length.
6220          */
6221         len = ptr - data;
6222
6223         /* If the direct address is present, then this report is from
6224          * a LE Direct Advertising Report event. In that case it is
6225          * important to see if the address is matching the local
6226          * controller address.
6227          */
6228         if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6229                 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6230                                                   &bdaddr_resolved);
6231
6232                 /* Only resolvable random addresses are valid for these
6233                  * kind of reports and others can be ignored.
6234                  */
6235                 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6236                         return;
6237
6238                 /* If the controller is not using resolvable random
6239                  * addresses, then this report can be ignored.
6240                  */
6241                 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6242                         return;
6243
6244                 /* If the local IRK of the controller does not match
6245                  * with the resolvable random address provided, then
6246                  * this report can be ignored.
6247                  */
6248                 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6249                         return;
6250         }
6251
6252         /* Check if we need to convert to identity address */
6253         irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6254         if (irk) {
6255                 bdaddr = &irk->bdaddr;
6256                 bdaddr_type = irk->addr_type;
6257         }
6258
6259         bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6260
6261         /* Check if we have been requested to connect to this device.
6262          *
6263          * direct_addr is set only for directed advertising reports (it is NULL
6264          * for advertising reports) and is already verified to be RPA above.
6265          */
6266         conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6267                                      type);
6268         if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) {
6269                 /* Store report for later inclusion by
6270                  * mgmt_device_connected
6271                  */
6272                 memcpy(conn->le_adv_data, data, len);
6273                 conn->le_adv_data_len = len;
6274         }
6275
6276         if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6277                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6278         else
6279                 flags = 0;
6280
6281         /* All scan results should be sent up for Mesh systems */
6282         if (hci_dev_test_flag(hdev, HCI_MESH)) {
6283                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6284                                   rssi, flags, data, len, NULL, 0, instant);
6285                 return;
6286         }
6287
6288         /* Passive scanning shouldn't trigger any device found events,
6289          * except for devices marked as CONN_REPORT for which we do send
6290          * device found events, or advertisement monitoring requested.
6291          */
6292         if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6293                 if (type == LE_ADV_DIRECT_IND)
6294                         return;
6295
6296                 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6297                                                bdaddr, bdaddr_type) &&
6298                     idr_is_empty(&hdev->adv_monitors_idr))
6299                         return;
6300
6301                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6302                                   rssi, flags, data, len, NULL, 0, 0);
6303                 return;
6304         }
6305
6306         /* When receiving non-connectable or scannable undirected
6307          * advertising reports, this means that the remote device is
6308          * not connectable and then clearly indicate this in the
6309          * device found event.
6310          *
6311          * When receiving a scan response, then there is no way to
6312          * know if the remote device is connectable or not. However
6313          * since scan responses are merged with a previously seen
6314          * advertising report, the flags field from that report
6315          * will be used.
6316          *
6317          * In the really unlikely case that a controller get confused
6318          * and just sends a scan response event, then it is marked as
6319          * not connectable as well.
6320          */
6321         if (type == LE_ADV_SCAN_RSP)
6322                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6323
6324         /* If there's nothing pending either store the data from this
6325          * event or send an immediate device found event if the data
6326          * should not be stored for later.
6327          */
6328         if (!ext_adv && !has_pending_adv_report(hdev)) {
6329                 /* If the report will trigger a SCAN_REQ store it for
6330                  * later merging.
6331                  */
6332                 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6333                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6334                                                  rssi, flags, data, len);
6335                         return;
6336                 }
6337
6338                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6339                                   rssi, flags, data, len, NULL, 0, 0);
6340                 return;
6341         }
6342
6343         /* Check if the pending report is for the same device as the new one */
6344         match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6345                  bdaddr_type == d->last_adv_addr_type);
6346
6347         /* If the pending data doesn't match this report or this isn't a
6348          * scan response (e.g. we got a duplicate ADV_IND) then force
6349          * sending of the pending data.
6350          */
6351         if (type != LE_ADV_SCAN_RSP || !match) {
6352                 /* Send out whatever is in the cache, but skip duplicates */
6353                 if (!match)
6354                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6355                                           d->last_adv_addr_type, NULL,
6356                                           d->last_adv_rssi, d->last_adv_flags,
6357                                           d->last_adv_data,
6358                                           d->last_adv_data_len, NULL, 0, 0);
6359
6360                 /* If the new report will trigger a SCAN_REQ store it for
6361                  * later merging.
6362                  */
6363                 if (!ext_adv && (type == LE_ADV_IND ||
6364                                  type == LE_ADV_SCAN_IND)) {
6365                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6366                                                  rssi, flags, data, len);
6367                         return;
6368                 }
6369
6370                 /* The advertising reports cannot be merged, so clear
6371                  * the pending report and send out a device found event.
6372                  */
6373                 clear_pending_adv_report(hdev);
6374                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6375                                   rssi, flags, data, len, NULL, 0, 0);
6376                 return;
6377         }
6378
6379         /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6380          * the new event is a SCAN_RSP. We can therefore proceed with
6381          * sending a merged device found event.
6382          */
6383         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6384                           d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6385                           d->last_adv_data, d->last_adv_data_len, data, len, 0);
6386         clear_pending_adv_report(hdev);
6387 }
6388
6389 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6390                                   struct sk_buff *skb)
6391 {
6392         struct hci_ev_le_advertising_report *ev = data;
6393         u64 instant = jiffies;
6394
6395         if (!ev->num)
6396                 return;
6397
6398         hci_dev_lock(hdev);
6399
6400         while (ev->num--) {
6401                 struct hci_ev_le_advertising_info *info;
6402                 s8 rssi;
6403
6404                 info = hci_le_ev_skb_pull(hdev, skb,
6405                                           HCI_EV_LE_ADVERTISING_REPORT,
6406                                           sizeof(*info));
6407                 if (!info)
6408                         break;
6409
6410                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6411                                         info->length + 1))
6412                         break;
6413
6414                 if (info->length <= HCI_MAX_AD_LENGTH) {
6415                         rssi = info->data[info->length];
6416                         process_adv_report(hdev, info->type, &info->bdaddr,
6417                                            info->bdaddr_type, NULL, 0, rssi,
6418                                            info->data, info->length, false,
6419                                            false, instant);
6420                 } else {
6421                         bt_dev_err(hdev, "Dropping invalid advertising data");
6422                 }
6423         }
6424
6425         hci_dev_unlock(hdev);
6426 }
6427
6428 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6429 {
6430         if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6431                 switch (evt_type) {
6432                 case LE_LEGACY_ADV_IND:
6433                         return LE_ADV_IND;
6434                 case LE_LEGACY_ADV_DIRECT_IND:
6435                         return LE_ADV_DIRECT_IND;
6436                 case LE_LEGACY_ADV_SCAN_IND:
6437                         return LE_ADV_SCAN_IND;
6438                 case LE_LEGACY_NONCONN_IND:
6439                         return LE_ADV_NONCONN_IND;
6440                 case LE_LEGACY_SCAN_RSP_ADV:
6441                 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6442                         return LE_ADV_SCAN_RSP;
6443                 }
6444
6445                 goto invalid;
6446         }
6447
6448         if (evt_type & LE_EXT_ADV_CONN_IND) {
6449                 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6450                         return LE_ADV_DIRECT_IND;
6451
6452                 return LE_ADV_IND;
6453         }
6454
6455         if (evt_type & LE_EXT_ADV_SCAN_RSP)
6456                 return LE_ADV_SCAN_RSP;
6457
6458         if (evt_type & LE_EXT_ADV_SCAN_IND)
6459                 return LE_ADV_SCAN_IND;
6460
6461         if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6462             evt_type & LE_EXT_ADV_DIRECT_IND)
6463                 return LE_ADV_NONCONN_IND;
6464
6465 invalid:
6466         bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6467                                evt_type);
6468
6469         return LE_ADV_INVALID;
6470 }
6471
6472 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6473                                       struct sk_buff *skb)
6474 {
6475         struct hci_ev_le_ext_adv_report *ev = data;
6476         u64 instant = jiffies;
6477
6478         if (!ev->num)
6479                 return;
6480
6481         hci_dev_lock(hdev);
6482
6483         while (ev->num--) {
6484                 struct hci_ev_le_ext_adv_info *info;
6485                 u8 legacy_evt_type;
6486                 u16 evt_type;
6487
6488                 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6489                                           sizeof(*info));
6490                 if (!info)
6491                         break;
6492
6493                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6494                                         info->length))
6495                         break;
6496
6497                 evt_type = __le16_to_cpu(info->type);
6498                 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6499                 if (legacy_evt_type != LE_ADV_INVALID) {
6500                         process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6501                                            info->bdaddr_type, NULL, 0,
6502                                            info->rssi, info->data, info->length,
6503                                            !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6504                                            false, instant);
6505                 }
6506         }
6507
6508         hci_dev_unlock(hdev);
6509 }
6510
6511 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6512 {
6513         struct hci_cp_le_pa_term_sync cp;
6514
6515         memset(&cp, 0, sizeof(cp));
6516         cp.handle = handle;
6517
6518         return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6519 }
6520
6521 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6522                                             struct sk_buff *skb)
6523 {
6524         struct hci_ev_le_pa_sync_established *ev = data;
6525         int mask = hdev->link_mode;
6526         __u8 flags = 0;
6527
6528         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6529
6530         if (ev->status)
6531                 return;
6532
6533         hci_dev_lock(hdev);
6534
6535         hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6536
6537         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6538         if (!(mask & HCI_LM_ACCEPT))
6539                 hci_le_pa_term_sync(hdev, ev->handle);
6540
6541         hci_dev_unlock(hdev);
6542 }
6543
6544 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6545                                             struct sk_buff *skb)
6546 {
6547         struct hci_ev_le_remote_feat_complete *ev = data;
6548         struct hci_conn *conn;
6549
6550         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6551
6552         hci_dev_lock(hdev);
6553
6554         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6555         if (conn) {
6556                 if (!ev->status)
6557                         memcpy(conn->features[0], ev->features, 8);
6558
6559                 if (conn->state == BT_CONFIG) {
6560                         __u8 status;
6561
6562                         /* If the local controller supports peripheral-initiated
6563                          * features exchange, but the remote controller does
6564                          * not, then it is possible that the error code 0x1a
6565                          * for unsupported remote feature gets returned.
6566                          *
6567                          * In this specific case, allow the connection to
6568                          * transition into connected state and mark it as
6569                          * successful.
6570                          */
6571                         if (!conn->out && ev->status == 0x1a &&
6572                             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6573                                 status = 0x00;
6574                         else
6575                                 status = ev->status;
6576
6577                         conn->state = BT_CONNECTED;
6578                         hci_connect_cfm(conn, status);
6579                         hci_conn_drop(conn);
6580                 }
6581         }
6582
6583         hci_dev_unlock(hdev);
6584 }
6585
6586 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6587                                    struct sk_buff *skb)
6588 {
6589         struct hci_ev_le_ltk_req *ev = data;
6590         struct hci_cp_le_ltk_reply cp;
6591         struct hci_cp_le_ltk_neg_reply neg;
6592         struct hci_conn *conn;
6593         struct smp_ltk *ltk;
6594
6595         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6596
6597         hci_dev_lock(hdev);
6598
6599         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6600         if (conn == NULL)
6601                 goto not_found;
6602
6603         ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6604         if (!ltk)
6605                 goto not_found;
6606
6607         if (smp_ltk_is_sc(ltk)) {
6608                 /* With SC both EDiv and Rand are set to zero */
6609                 if (ev->ediv || ev->rand)
6610                         goto not_found;
6611         } else {
6612                 /* For non-SC keys check that EDiv and Rand match */
6613                 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6614                         goto not_found;
6615         }
6616
6617         memcpy(cp.ltk, ltk->val, ltk->enc_size);
6618         memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6619         cp.handle = cpu_to_le16(conn->handle);
6620
6621         conn->pending_sec_level = smp_ltk_sec_level(ltk);
6622
6623         conn->enc_key_size = ltk->enc_size;
6624
6625         hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6626
6627         /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6628          * temporary key used to encrypt a connection following
6629          * pairing. It is used during the Encrypted Session Setup to
6630          * distribute the keys. Later, security can be re-established
6631          * using a distributed LTK.
6632          */
6633         if (ltk->type == SMP_STK) {
6634                 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6635                 list_del_rcu(&ltk->list);
6636                 kfree_rcu(ltk, rcu);
6637         } else {
6638                 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6639         }
6640
6641         hci_dev_unlock(hdev);
6642
6643         return;
6644
6645 not_found:
6646         neg.handle = ev->handle;
6647         hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6648         hci_dev_unlock(hdev);
6649 }
6650
6651 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6652                                       u8 reason)
6653 {
6654         struct hci_cp_le_conn_param_req_neg_reply cp;
6655
6656         cp.handle = cpu_to_le16(handle);
6657         cp.reason = reason;
6658
6659         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6660                      &cp);
6661 }
6662
6663 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6664                                              struct sk_buff *skb)
6665 {
6666         struct hci_ev_le_remote_conn_param_req *ev = data;
6667         struct hci_cp_le_conn_param_req_reply cp;
6668         struct hci_conn *hcon;
6669         u16 handle, min, max, latency, timeout;
6670
6671         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6672
6673         handle = le16_to_cpu(ev->handle);
6674         min = le16_to_cpu(ev->interval_min);
6675         max = le16_to_cpu(ev->interval_max);
6676         latency = le16_to_cpu(ev->latency);
6677         timeout = le16_to_cpu(ev->timeout);
6678
6679         hcon = hci_conn_hash_lookup_handle(hdev, handle);
6680         if (!hcon || hcon->state != BT_CONNECTED)
6681                 return send_conn_param_neg_reply(hdev, handle,
6682                                                  HCI_ERROR_UNKNOWN_CONN_ID);
6683
6684         if (hci_check_conn_params(min, max, latency, timeout))
6685                 return send_conn_param_neg_reply(hdev, handle,
6686                                                  HCI_ERROR_INVALID_LL_PARAMS);
6687
6688         if (hcon->role == HCI_ROLE_MASTER) {
6689                 struct hci_conn_params *params;
6690                 u8 store_hint;
6691
6692                 hci_dev_lock(hdev);
6693
6694                 params = hci_conn_params_lookup(hdev, &hcon->dst,
6695                                                 hcon->dst_type);
6696                 if (params) {
6697                         params->conn_min_interval = min;
6698                         params->conn_max_interval = max;
6699                         params->conn_latency = latency;
6700                         params->supervision_timeout = timeout;
6701                         store_hint = 0x01;
6702                 } else {
6703                         store_hint = 0x00;
6704                 }
6705
6706                 hci_dev_unlock(hdev);
6707
6708                 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6709                                     store_hint, min, max, latency, timeout);
6710         }
6711
6712         cp.handle = ev->handle;
6713         cp.interval_min = ev->interval_min;
6714         cp.interval_max = ev->interval_max;
6715         cp.latency = ev->latency;
6716         cp.timeout = ev->timeout;
6717         cp.min_ce_len = 0;
6718         cp.max_ce_len = 0;
6719
6720         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6721 }
6722
6723 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6724                                          struct sk_buff *skb)
6725 {
6726         struct hci_ev_le_direct_adv_report *ev = data;
6727         u64 instant = jiffies;
6728         int i;
6729
6730         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6731                                 flex_array_size(ev, info, ev->num)))
6732                 return;
6733
6734         if (!ev->num)
6735                 return;
6736
6737         hci_dev_lock(hdev);
6738
6739         for (i = 0; i < ev->num; i++) {
6740                 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6741
6742                 process_adv_report(hdev, info->type, &info->bdaddr,
6743                                    info->bdaddr_type, &info->direct_addr,
6744                                    info->direct_addr_type, info->rssi, NULL, 0,
6745                                    false, false, instant);
6746         }
6747
6748         hci_dev_unlock(hdev);
6749 }
6750
6751 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6752                                   struct sk_buff *skb)
6753 {
6754         struct hci_ev_le_phy_update_complete *ev = data;
6755         struct hci_conn *conn;
6756
6757         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6758
6759         if (ev->status)
6760                 return;
6761
6762         hci_dev_lock(hdev);
6763
6764         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6765         if (!conn)
6766                 goto unlock;
6767
6768         conn->le_tx_phy = ev->tx_phy;
6769         conn->le_rx_phy = ev->rx_phy;
6770
6771 unlock:
6772         hci_dev_unlock(hdev);
6773 }
6774
6775 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
6776                                         struct sk_buff *skb)
6777 {
6778         struct hci_evt_le_cis_established *ev = data;
6779         struct hci_conn *conn;
6780         u16 handle = __le16_to_cpu(ev->handle);
6781
6782         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6783
6784         hci_dev_lock(hdev);
6785
6786         conn = hci_conn_hash_lookup_handle(hdev, handle);
6787         if (!conn) {
6788                 bt_dev_err(hdev,
6789                            "Unable to find connection with handle 0x%4.4x",
6790                            handle);
6791                 goto unlock;
6792         }
6793
6794         if (conn->type != ISO_LINK) {
6795                 bt_dev_err(hdev,
6796                            "Invalid connection link type handle 0x%4.4x",
6797                            handle);
6798                 goto unlock;
6799         }
6800
6801         if (conn->role == HCI_ROLE_SLAVE) {
6802                 __le32 interval;
6803
6804                 memset(&interval, 0, sizeof(interval));
6805
6806                 memcpy(&interval, ev->c_latency, sizeof(ev->c_latency));
6807                 conn->iso_qos.in.interval = le32_to_cpu(interval);
6808                 memcpy(&interval, ev->p_latency, sizeof(ev->p_latency));
6809                 conn->iso_qos.out.interval = le32_to_cpu(interval);
6810                 conn->iso_qos.in.latency = le16_to_cpu(ev->interval);
6811                 conn->iso_qos.out.latency = le16_to_cpu(ev->interval);
6812                 conn->iso_qos.in.sdu = le16_to_cpu(ev->c_mtu);
6813                 conn->iso_qos.out.sdu = le16_to_cpu(ev->p_mtu);
6814                 conn->iso_qos.in.phy = ev->c_phy;
6815                 conn->iso_qos.out.phy = ev->p_phy;
6816         }
6817
6818         if (!ev->status) {
6819                 conn->state = BT_CONNECTED;
6820                 hci_debugfs_create_conn(conn);
6821                 hci_conn_add_sysfs(conn);
6822                 hci_iso_setup_path(conn);
6823                 goto unlock;
6824         }
6825
6826         hci_connect_cfm(conn, ev->status);
6827         hci_conn_del(conn);
6828
6829 unlock:
6830         hci_dev_unlock(hdev);
6831 }
6832
6833 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
6834 {
6835         struct hci_cp_le_reject_cis cp;
6836
6837         memset(&cp, 0, sizeof(cp));
6838         cp.handle = handle;
6839         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
6840         hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
6841 }
6842
6843 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
6844 {
6845         struct hci_cp_le_accept_cis cp;
6846
6847         memset(&cp, 0, sizeof(cp));
6848         cp.handle = handle;
6849         hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
6850 }
6851
6852 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
6853                                struct sk_buff *skb)
6854 {
6855         struct hci_evt_le_cis_req *ev = data;
6856         u16 acl_handle, cis_handle;
6857         struct hci_conn *acl, *cis;
6858         int mask;
6859         __u8 flags = 0;
6860
6861         acl_handle = __le16_to_cpu(ev->acl_handle);
6862         cis_handle = __le16_to_cpu(ev->cis_handle);
6863
6864         bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
6865                    acl_handle, cis_handle, ev->cig_id, ev->cis_id);
6866
6867         hci_dev_lock(hdev);
6868
6869         acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
6870         if (!acl)
6871                 goto unlock;
6872
6873         mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
6874         if (!(mask & HCI_LM_ACCEPT)) {
6875                 hci_le_reject_cis(hdev, ev->cis_handle);
6876                 goto unlock;
6877         }
6878
6879         cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
6880         if (!cis) {
6881                 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE);
6882                 if (!cis) {
6883                         hci_le_reject_cis(hdev, ev->cis_handle);
6884                         goto unlock;
6885                 }
6886                 cis->handle = cis_handle;
6887         }
6888
6889         cis->iso_qos.cig = ev->cig_id;
6890         cis->iso_qos.cis = ev->cis_id;
6891
6892         if (!(flags & HCI_PROTO_DEFER)) {
6893                 hci_le_accept_cis(hdev, ev->cis_handle);
6894         } else {
6895                 cis->state = BT_CONNECT2;
6896                 hci_connect_cfm(cis, 0);
6897         }
6898
6899 unlock:
6900         hci_dev_unlock(hdev);
6901 }
6902
6903 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
6904                                            struct sk_buff *skb)
6905 {
6906         struct hci_evt_le_create_big_complete *ev = data;
6907         struct hci_conn *conn;
6908
6909         BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
6910
6911         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
6912                                 flex_array_size(ev, bis_handle, ev->num_bis)))
6913                 return;
6914
6915         hci_dev_lock(hdev);
6916
6917         conn = hci_conn_hash_lookup_big(hdev, ev->handle);
6918         if (!conn)
6919                 goto unlock;
6920
6921         if (conn->type != ISO_LINK) {
6922                 bt_dev_err(hdev,
6923                            "Invalid connection link type handle 0x%2.2x",
6924                            ev->handle);
6925                 goto unlock;
6926         }
6927
6928         if (ev->num_bis)
6929                 conn->handle = __le16_to_cpu(ev->bis_handle[0]);
6930
6931         if (!ev->status) {
6932                 conn->state = BT_CONNECTED;
6933                 hci_debugfs_create_conn(conn);
6934                 hci_conn_add_sysfs(conn);
6935                 hci_iso_setup_path(conn);
6936                 goto unlock;
6937         }
6938
6939         hci_connect_cfm(conn, ev->status);
6940         hci_conn_del(conn);
6941
6942 unlock:
6943         hci_dev_unlock(hdev);
6944 }
6945
6946 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
6947                                             struct sk_buff *skb)
6948 {
6949         struct hci_evt_le_big_sync_estabilished *ev = data;
6950         struct hci_conn *bis;
6951         int i;
6952
6953         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6954
6955         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
6956                                 flex_array_size(ev, bis, ev->num_bis)))
6957                 return;
6958
6959         if (ev->status)
6960                 return;
6961
6962         hci_dev_lock(hdev);
6963
6964         for (i = 0; i < ev->num_bis; i++) {
6965                 u16 handle = le16_to_cpu(ev->bis[i]);
6966                 __le32 interval;
6967
6968                 bis = hci_conn_hash_lookup_handle(hdev, handle);
6969                 if (!bis) {
6970                         bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
6971                                            HCI_ROLE_SLAVE);
6972                         if (!bis)
6973                                 continue;
6974                         bis->handle = handle;
6975                 }
6976
6977                 bis->iso_qos.big = ev->handle;
6978                 memset(&interval, 0, sizeof(interval));
6979                 memcpy(&interval, ev->latency, sizeof(ev->latency));
6980                 bis->iso_qos.in.interval = le32_to_cpu(interval);
6981                 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
6982                 bis->iso_qos.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
6983                 bis->iso_qos.in.sdu = le16_to_cpu(ev->max_pdu);
6984
6985                 hci_connect_cfm(bis, ev->status);
6986         }
6987
6988         hci_dev_unlock(hdev);
6989 }
6990
6991 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
6992                                            struct sk_buff *skb)
6993 {
6994         struct hci_evt_le_big_info_adv_report *ev = data;
6995         int mask = hdev->link_mode;
6996         __u8 flags = 0;
6997
6998         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
6999
7000         hci_dev_lock(hdev);
7001
7002         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7003         if (!(mask & HCI_LM_ACCEPT))
7004                 hci_le_pa_term_sync(hdev, ev->sync_handle);
7005
7006         hci_dev_unlock(hdev);
7007 }
7008
7009 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7010 [_op] = { \
7011         .func = _func, \
7012         .min_len = _min_len, \
7013         .max_len = _max_len, \
7014 }
7015
7016 #define HCI_LE_EV(_op, _func, _len) \
7017         HCI_LE_EV_VL(_op, _func, _len, _len)
7018
7019 #define HCI_LE_EV_STATUS(_op, _func) \
7020         HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7021
7022 /* Entries in this table shall have their position according to the subevent
7023  * opcode they handle so the use of the macros above is recommend since it does
7024  * attempt to initialize at its proper index using Designated Initializers that
7025  * way events without a callback function can be ommited.
7026  */
7027 static const struct hci_le_ev {
7028         void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7029         u16  min_len;
7030         u16  max_len;
7031 } hci_le_ev_table[U8_MAX + 1] = {
7032         /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7033         HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7034                   sizeof(struct hci_ev_le_conn_complete)),
7035         /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7036         HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7037                      sizeof(struct hci_ev_le_advertising_report),
7038                      HCI_MAX_EVENT_SIZE),
7039         /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7040         HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7041                   hci_le_conn_update_complete_evt,
7042                   sizeof(struct hci_ev_le_conn_update_complete)),
7043         /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7044         HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7045                   hci_le_remote_feat_complete_evt,
7046                   sizeof(struct hci_ev_le_remote_feat_complete)),
7047         /* [0x05 = HCI_EV_LE_LTK_REQ] */
7048         HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7049                   sizeof(struct hci_ev_le_ltk_req)),
7050         /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7051         HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7052                   hci_le_remote_conn_param_req_evt,
7053                   sizeof(struct hci_ev_le_remote_conn_param_req)),
7054         /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7055         HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7056                   hci_le_enh_conn_complete_evt,
7057                   sizeof(struct hci_ev_le_enh_conn_complete)),
7058         /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7059         HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7060                      sizeof(struct hci_ev_le_direct_adv_report),
7061                      HCI_MAX_EVENT_SIZE),
7062         /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7063         HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7064                   sizeof(struct hci_ev_le_phy_update_complete)),
7065         /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7066         HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7067                      sizeof(struct hci_ev_le_ext_adv_report),
7068                      HCI_MAX_EVENT_SIZE),
7069         /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7070         HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7071                   hci_le_pa_sync_estabilished_evt,
7072                   sizeof(struct hci_ev_le_pa_sync_established)),
7073         /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7074         HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7075                   sizeof(struct hci_evt_le_ext_adv_set_term)),
7076         /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7077         HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7078                   sizeof(struct hci_evt_le_cis_established)),
7079         /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7080         HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7081                   sizeof(struct hci_evt_le_cis_req)),
7082         /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7083         HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7084                      hci_le_create_big_complete_evt,
7085                      sizeof(struct hci_evt_le_create_big_complete),
7086                      HCI_MAX_EVENT_SIZE),
7087         /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7088         HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7089                      hci_le_big_sync_established_evt,
7090                      sizeof(struct hci_evt_le_big_sync_estabilished),
7091                      HCI_MAX_EVENT_SIZE),
7092         /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7093         HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7094                      hci_le_big_info_adv_report_evt,
7095                      sizeof(struct hci_evt_le_big_info_adv_report),
7096                      HCI_MAX_EVENT_SIZE),
7097 };
7098
7099 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7100                             struct sk_buff *skb, u16 *opcode, u8 *status,
7101                             hci_req_complete_t *req_complete,
7102                             hci_req_complete_skb_t *req_complete_skb)
7103 {
7104         struct hci_ev_le_meta *ev = data;
7105         const struct hci_le_ev *subev;
7106
7107         bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7108
7109         /* Only match event if command OGF is for LE */
7110         if (hdev->sent_cmd &&
7111             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7112             hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7113                 *opcode = hci_skb_opcode(hdev->sent_cmd);
7114                 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7115                                      req_complete_skb);
7116         }
7117
7118         subev = &hci_le_ev_table[ev->subevent];
7119         if (!subev->func)
7120                 return;
7121
7122         if (skb->len < subev->min_len) {
7123                 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7124                            ev->subevent, skb->len, subev->min_len);
7125                 return;
7126         }
7127
7128         /* Just warn if the length is over max_len size it still be
7129          * possible to partially parse the event so leave to callback to
7130          * decide if that is acceptable.
7131          */
7132         if (skb->len > subev->max_len)
7133                 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7134                             ev->subevent, skb->len, subev->max_len);
7135         data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7136         if (!data)
7137                 return;
7138
7139         subev->func(hdev, data, skb);
7140 }
7141
7142 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7143                                  u8 event, struct sk_buff *skb)
7144 {
7145         struct hci_ev_cmd_complete *ev;
7146         struct hci_event_hdr *hdr;
7147
7148         if (!skb)
7149                 return false;
7150
7151         hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7152         if (!hdr)
7153                 return false;
7154
7155         if (event) {
7156                 if (hdr->evt != event)
7157                         return false;
7158                 return true;
7159         }
7160
7161         /* Check if request ended in Command Status - no way to retrieve
7162          * any extra parameters in this case.
7163          */
7164         if (hdr->evt == HCI_EV_CMD_STATUS)
7165                 return false;
7166
7167         if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7168                 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7169                            hdr->evt);
7170                 return false;
7171         }
7172
7173         ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7174         if (!ev)
7175                 return false;
7176
7177         if (opcode != __le16_to_cpu(ev->opcode)) {
7178                 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7179                        __le16_to_cpu(ev->opcode));
7180                 return false;
7181         }
7182
7183         return true;
7184 }
7185
7186 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7187                                   struct sk_buff *skb)
7188 {
7189         struct hci_ev_le_advertising_info *adv;
7190         struct hci_ev_le_direct_adv_info *direct_adv;
7191         struct hci_ev_le_ext_adv_info *ext_adv;
7192         const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7193         const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7194
7195         hci_dev_lock(hdev);
7196
7197         /* If we are currently suspended and this is the first BT event seen,
7198          * save the wake reason associated with the event.
7199          */
7200         if (!hdev->suspended || hdev->wake_reason)
7201                 goto unlock;
7202
7203         /* Default to remote wake. Values for wake_reason are documented in the
7204          * Bluez mgmt api docs.
7205          */
7206         hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7207
7208         /* Once configured for remote wakeup, we should only wake up for
7209          * reconnections. It's useful to see which device is waking us up so
7210          * keep track of the bdaddr of the connection event that woke us up.
7211          */
7212         if (event == HCI_EV_CONN_REQUEST) {
7213                 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7214                 hdev->wake_addr_type = BDADDR_BREDR;
7215         } else if (event == HCI_EV_CONN_COMPLETE) {
7216                 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7217                 hdev->wake_addr_type = BDADDR_BREDR;
7218         } else if (event == HCI_EV_LE_META) {
7219                 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7220                 u8 subevent = le_ev->subevent;
7221                 u8 *ptr = &skb->data[sizeof(*le_ev)];
7222                 u8 num_reports = *ptr;
7223
7224                 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7225                      subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7226                      subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7227                     num_reports) {
7228                         adv = (void *)(ptr + 1);
7229                         direct_adv = (void *)(ptr + 1);
7230                         ext_adv = (void *)(ptr + 1);
7231
7232                         switch (subevent) {
7233                         case HCI_EV_LE_ADVERTISING_REPORT:
7234                                 bacpy(&hdev->wake_addr, &adv->bdaddr);
7235                                 hdev->wake_addr_type = adv->bdaddr_type;
7236                                 break;
7237                         case HCI_EV_LE_DIRECT_ADV_REPORT:
7238                                 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7239                                 hdev->wake_addr_type = direct_adv->bdaddr_type;
7240                                 break;
7241                         case HCI_EV_LE_EXT_ADV_REPORT:
7242                                 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7243                                 hdev->wake_addr_type = ext_adv->bdaddr_type;
7244                                 break;
7245                         }
7246                 }
7247         } else {
7248                 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7249         }
7250
7251 unlock:
7252         hci_dev_unlock(hdev);
7253 }
7254
7255 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7256 [_op] = { \
7257         .req = false, \
7258         .func = _func, \
7259         .min_len = _min_len, \
7260         .max_len = _max_len, \
7261 }
7262
7263 #define HCI_EV(_op, _func, _len) \
7264         HCI_EV_VL(_op, _func, _len, _len)
7265
7266 #define HCI_EV_STATUS(_op, _func) \
7267         HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7268
7269 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7270 [_op] = { \
7271         .req = true, \
7272         .func_req = _func, \
7273         .min_len = _min_len, \
7274         .max_len = _max_len, \
7275 }
7276
7277 #define HCI_EV_REQ(_op, _func, _len) \
7278         HCI_EV_REQ_VL(_op, _func, _len, _len)
7279
7280 /* Entries in this table shall have their position according to the event opcode
7281  * they handle so the use of the macros above is recommend since it does attempt
7282  * to initialize at its proper index using Designated Initializers that way
7283  * events without a callback function don't have entered.
7284  */
7285 static const struct hci_ev {
7286         bool req;
7287         union {
7288                 void (*func)(struct hci_dev *hdev, void *data,
7289                              struct sk_buff *skb);
7290                 void (*func_req)(struct hci_dev *hdev, void *data,
7291                                  struct sk_buff *skb, u16 *opcode, u8 *status,
7292                                  hci_req_complete_t *req_complete,
7293                                  hci_req_complete_skb_t *req_complete_skb);
7294         };
7295         u16  min_len;
7296         u16  max_len;
7297 } hci_ev_table[U8_MAX + 1] = {
7298         /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7299         HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7300         /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7301         HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7302                   sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7303         /* [0x03 = HCI_EV_CONN_COMPLETE] */
7304         HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7305                sizeof(struct hci_ev_conn_complete)),
7306         /* [0x04 = HCI_EV_CONN_REQUEST] */
7307         HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7308                sizeof(struct hci_ev_conn_request)),
7309         /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7310         HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7311                sizeof(struct hci_ev_disconn_complete)),
7312         /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7313         HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7314                sizeof(struct hci_ev_auth_complete)),
7315         /* [0x07 = HCI_EV_REMOTE_NAME] */
7316         HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7317                sizeof(struct hci_ev_remote_name)),
7318         /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7319         HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7320                sizeof(struct hci_ev_encrypt_change)),
7321         /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7322         HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7323                hci_change_link_key_complete_evt,
7324                sizeof(struct hci_ev_change_link_key_complete)),
7325         /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7326         HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7327                sizeof(struct hci_ev_remote_features)),
7328         /* [0x0e = HCI_EV_CMD_COMPLETE] */
7329         HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7330                       sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7331         /* [0x0f = HCI_EV_CMD_STATUS] */
7332         HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7333                    sizeof(struct hci_ev_cmd_status)),
7334         /* [0x10 = HCI_EV_CMD_STATUS] */
7335         HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7336                sizeof(struct hci_ev_hardware_error)),
7337         /* [0x12 = HCI_EV_ROLE_CHANGE] */
7338         HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7339                sizeof(struct hci_ev_role_change)),
7340         /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7341         HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7342                   sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7343         /* [0x14 = HCI_EV_MODE_CHANGE] */
7344         HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7345                sizeof(struct hci_ev_mode_change)),
7346         /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7347         HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7348                sizeof(struct hci_ev_pin_code_req)),
7349         /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7350         HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7351                sizeof(struct hci_ev_link_key_req)),
7352         /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7353         HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7354                sizeof(struct hci_ev_link_key_notify)),
7355         /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7356         HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7357                sizeof(struct hci_ev_clock_offset)),
7358         /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7359         HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7360                sizeof(struct hci_ev_pkt_type_change)),
7361         /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7362         HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7363                sizeof(struct hci_ev_pscan_rep_mode)),
7364         /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7365         HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7366                   hci_inquiry_result_with_rssi_evt,
7367                   sizeof(struct hci_ev_inquiry_result_rssi),
7368                   HCI_MAX_EVENT_SIZE),
7369         /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7370         HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7371                sizeof(struct hci_ev_remote_ext_features)),
7372         /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7373         HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7374                sizeof(struct hci_ev_sync_conn_complete)),
7375         /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7376         HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7377                   hci_extended_inquiry_result_evt,
7378                   sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7379         /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7380         HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7381                sizeof(struct hci_ev_key_refresh_complete)),
7382         /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7383         HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7384                sizeof(struct hci_ev_io_capa_request)),
7385         /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7386         HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7387                sizeof(struct hci_ev_io_capa_reply)),
7388         /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7389         HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7390                sizeof(struct hci_ev_user_confirm_req)),
7391         /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7392         HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7393                sizeof(struct hci_ev_user_passkey_req)),
7394         /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7395         HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7396                sizeof(struct hci_ev_remote_oob_data_request)),
7397         /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7398         HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7399                sizeof(struct hci_ev_simple_pair_complete)),
7400         /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7401         HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7402                sizeof(struct hci_ev_user_passkey_notify)),
7403         /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7404         HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7405                sizeof(struct hci_ev_keypress_notify)),
7406         /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7407         HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7408                sizeof(struct hci_ev_remote_host_features)),
7409         /* [0x3e = HCI_EV_LE_META] */
7410         HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7411                       sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7412 #if IS_ENABLED(CONFIG_BT_HS)
7413         /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7414         HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7415                sizeof(struct hci_ev_phy_link_complete)),
7416         /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7417         HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7418                sizeof(struct hci_ev_channel_selected)),
7419         /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7420         HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7421                hci_disconn_loglink_complete_evt,
7422                sizeof(struct hci_ev_disconn_logical_link_complete)),
7423         /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7424         HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7425                sizeof(struct hci_ev_logical_link_complete)),
7426         /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7427         HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7428                hci_disconn_phylink_complete_evt,
7429                sizeof(struct hci_ev_disconn_phy_link_complete)),
7430 #endif
7431         /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7432         HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7433                sizeof(struct hci_ev_num_comp_blocks)),
7434         /* [0xff = HCI_EV_VENDOR] */
7435         HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7436 };
7437
7438 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7439                            u16 *opcode, u8 *status,
7440                            hci_req_complete_t *req_complete,
7441                            hci_req_complete_skb_t *req_complete_skb)
7442 {
7443         const struct hci_ev *ev = &hci_ev_table[event];
7444         void *data;
7445
7446         if (!ev->func)
7447                 return;
7448
7449         if (skb->len < ev->min_len) {
7450                 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7451                            event, skb->len, ev->min_len);
7452                 return;
7453         }
7454
7455         /* Just warn if the length is over max_len size it still be
7456          * possible to partially parse the event so leave to callback to
7457          * decide if that is acceptable.
7458          */
7459         if (skb->len > ev->max_len)
7460                 bt_dev_warn_ratelimited(hdev,
7461                                         "unexpected event 0x%2.2x length: %u > %u",
7462                                         event, skb->len, ev->max_len);
7463
7464         data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7465         if (!data)
7466                 return;
7467
7468         if (ev->req)
7469                 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7470                              req_complete_skb);
7471         else
7472                 ev->func(hdev, data, skb);
7473 }
7474
7475 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7476 {
7477         struct hci_event_hdr *hdr = (void *) skb->data;
7478         hci_req_complete_t req_complete = NULL;
7479         hci_req_complete_skb_t req_complete_skb = NULL;
7480         struct sk_buff *orig_skb = NULL;
7481         u8 status = 0, event, req_evt = 0;
7482         u16 opcode = HCI_OP_NOP;
7483
7484         if (skb->len < sizeof(*hdr)) {
7485                 bt_dev_err(hdev, "Malformed HCI Event");
7486                 goto done;
7487         }
7488
7489         kfree_skb(hdev->recv_event);
7490         hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7491
7492         event = hdr->evt;
7493         if (!event) {
7494                 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7495                             event);
7496                 goto done;
7497         }
7498
7499         /* Only match event if command OGF is not for LE */
7500         if (hdev->sent_cmd &&
7501             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7502             hci_skb_event(hdev->sent_cmd) == event) {
7503                 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7504                                      status, &req_complete, &req_complete_skb);
7505                 req_evt = event;
7506         }
7507
7508         /* If it looks like we might end up having to call
7509          * req_complete_skb, store a pristine copy of the skb since the
7510          * various handlers may modify the original one through
7511          * skb_pull() calls, etc.
7512          */
7513         if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7514             event == HCI_EV_CMD_COMPLETE)
7515                 orig_skb = skb_clone(skb, GFP_KERNEL);
7516
7517         skb_pull(skb, HCI_EVENT_HDR_SIZE);
7518
7519         /* Store wake reason if we're suspended */
7520         hci_store_wake_reason(hdev, event, skb);
7521
7522         bt_dev_dbg(hdev, "event 0x%2.2x", event);
7523
7524         hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7525                        &req_complete_skb);
7526
7527         if (req_complete) {
7528                 req_complete(hdev, status, opcode);
7529         } else if (req_complete_skb) {
7530                 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7531                         kfree_skb(orig_skb);
7532                         orig_skb = NULL;
7533                 }
7534                 req_complete_skb(hdev, status, opcode, orig_skb);
7535         }
7536
7537 done:
7538         kfree_skb(orig_skb);
7539         kfree_skb(skb);
7540         hdev->stat.evt_rx++;
7541 }