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                         rcu_read_unlock();
3843                         hci_le_create_cis(conn->link);
3844                         rcu_read_lock();
3845                 }
3846
3847                 if (i == rp->num_handles)
3848                         break;
3849         }
3850
3851         rcu_read_unlock();
3852
3853 unlock:
3854         hci_dev_unlock(hdev);
3855
3856         return rp->status;
3857 }
3858
3859 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3860                                    struct sk_buff *skb)
3861 {
3862         struct hci_rp_le_setup_iso_path *rp = data;
3863         struct hci_cp_le_setup_iso_path *cp;
3864         struct hci_conn *conn;
3865
3866         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3867
3868         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3869         if (!cp)
3870                 return rp->status;
3871
3872         hci_dev_lock(hdev);
3873
3874         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3875         if (!conn)
3876                 goto unlock;
3877
3878         if (rp->status) {
3879                 hci_connect_cfm(conn, rp->status);
3880                 hci_conn_del(conn);
3881                 goto unlock;
3882         }
3883
3884         switch (cp->direction) {
3885         /* Input (Host to Controller) */
3886         case 0x00:
3887                 /* Only confirm connection if output only */
3888                 if (conn->iso_qos.out.sdu && !conn->iso_qos.in.sdu)
3889                         hci_connect_cfm(conn, rp->status);
3890                 break;
3891         /* Output (Controller to Host) */
3892         case 0x01:
3893                 /* Confirm connection since conn->iso_qos is always configured
3894                  * last.
3895                  */
3896                 hci_connect_cfm(conn, rp->status);
3897                 break;
3898         }
3899
3900 unlock:
3901         hci_dev_unlock(hdev);
3902         return rp->status;
3903 }
3904
3905 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
3906 {
3907         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3908 }
3909
3910 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
3911                                    struct sk_buff *skb)
3912 {
3913         struct hci_ev_status *rp = data;
3914         struct hci_cp_le_set_per_adv_params *cp;
3915
3916         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3917
3918         if (rp->status)
3919                 return rp->status;
3920
3921         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
3922         if (!cp)
3923                 return rp->status;
3924
3925         /* TODO: set the conn state */
3926         return rp->status;
3927 }
3928
3929 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
3930                                        struct sk_buff *skb)
3931 {
3932         struct hci_ev_status *rp = data;
3933         __u8 *sent;
3934
3935         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3936
3937         if (rp->status)
3938                 return rp->status;
3939
3940         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
3941         if (!sent)
3942                 return rp->status;
3943
3944         hci_dev_lock(hdev);
3945
3946         if (*sent)
3947                 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
3948         else
3949                 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
3950
3951         hci_dev_unlock(hdev);
3952
3953         return rp->status;
3954 }
3955
3956 #define HCI_CC_VL(_op, _func, _min, _max) \
3957 { \
3958         .op = _op, \
3959         .func = _func, \
3960         .min_len = _min, \
3961         .max_len = _max, \
3962 }
3963
3964 #define HCI_CC(_op, _func, _len) \
3965         HCI_CC_VL(_op, _func, _len, _len)
3966
3967 #define HCI_CC_STATUS(_op, _func) \
3968         HCI_CC(_op, _func, sizeof(struct hci_ev_status))
3969
3970 static const struct hci_cc {
3971         u16  op;
3972         u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
3973         u16  min_len;
3974         u16  max_len;
3975 } hci_cc_table[] = {
3976         HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
3977         HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
3978         HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
3979         HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
3980                       hci_cc_remote_name_req_cancel),
3981         HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
3982                sizeof(struct hci_rp_role_discovery)),
3983         HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
3984                sizeof(struct hci_rp_read_link_policy)),
3985         HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
3986                sizeof(struct hci_rp_write_link_policy)),
3987         HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
3988                sizeof(struct hci_rp_read_def_link_policy)),
3989         HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
3990                       hci_cc_write_def_link_policy),
3991         HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
3992         HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
3993                sizeof(struct hci_rp_read_stored_link_key)),
3994         HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
3995                sizeof(struct hci_rp_delete_stored_link_key)),
3996         HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
3997         HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
3998                sizeof(struct hci_rp_read_local_name)),
3999         HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4000         HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4001         HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4002         HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4003         HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4004                sizeof(struct hci_rp_read_class_of_dev)),
4005         HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4006         HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4007                sizeof(struct hci_rp_read_voice_setting)),
4008         HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4009         HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4010                sizeof(struct hci_rp_read_num_supported_iac)),
4011         HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4012         HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4013         HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4014                sizeof(struct hci_rp_read_auth_payload_to)),
4015         HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4016                sizeof(struct hci_rp_write_auth_payload_to)),
4017         HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4018                sizeof(struct hci_rp_read_local_version)),
4019         HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4020                sizeof(struct hci_rp_read_local_commands)),
4021         HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4022                sizeof(struct hci_rp_read_local_features)),
4023         HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4024                sizeof(struct hci_rp_read_local_ext_features)),
4025         HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4026                sizeof(struct hci_rp_read_buffer_size)),
4027         HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4028                sizeof(struct hci_rp_read_bd_addr)),
4029         HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4030                sizeof(struct hci_rp_read_local_pairing_opts)),
4031         HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4032                sizeof(struct hci_rp_read_page_scan_activity)),
4033         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4034                       hci_cc_write_page_scan_activity),
4035         HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4036                sizeof(struct hci_rp_read_page_scan_type)),
4037         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4038         HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4039                sizeof(struct hci_rp_read_data_block_size)),
4040         HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4041                sizeof(struct hci_rp_read_flow_control_mode)),
4042         HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4043                sizeof(struct hci_rp_read_local_amp_info)),
4044         HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4045                sizeof(struct hci_rp_read_clock)),
4046         HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4047                sizeof(struct hci_rp_read_enc_key_size)),
4048         HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4049                sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4050         HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4051                hci_cc_read_def_err_data_reporting,
4052                sizeof(struct hci_rp_read_def_err_data_reporting)),
4053         HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4054                       hci_cc_write_def_err_data_reporting),
4055         HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4056                sizeof(struct hci_rp_pin_code_reply)),
4057         HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4058                sizeof(struct hci_rp_pin_code_neg_reply)),
4059         HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4060                sizeof(struct hci_rp_read_local_oob_data)),
4061         HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4062                sizeof(struct hci_rp_read_local_oob_ext_data)),
4063         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4064                sizeof(struct hci_rp_le_read_buffer_size)),
4065         HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4066                sizeof(struct hci_rp_le_read_local_features)),
4067         HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4068                sizeof(struct hci_rp_le_read_adv_tx_power)),
4069         HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4070                sizeof(struct hci_rp_user_confirm_reply)),
4071         HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4072                sizeof(struct hci_rp_user_confirm_reply)),
4073         HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4074                sizeof(struct hci_rp_user_confirm_reply)),
4075         HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4076                sizeof(struct hci_rp_user_confirm_reply)),
4077         HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4078         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4079         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4080         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4081         HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4082                hci_cc_le_read_accept_list_size,
4083                sizeof(struct hci_rp_le_read_accept_list_size)),
4084         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4085         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4086                       hci_cc_le_add_to_accept_list),
4087         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4088                       hci_cc_le_del_from_accept_list),
4089         HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4090                sizeof(struct hci_rp_le_read_supported_states)),
4091         HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4092                sizeof(struct hci_rp_le_read_def_data_len)),
4093         HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4094                       hci_cc_le_write_def_data_len),
4095         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4096                       hci_cc_le_add_to_resolv_list),
4097         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4098                       hci_cc_le_del_from_resolv_list),
4099         HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4100                       hci_cc_le_clear_resolv_list),
4101         HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4102                sizeof(struct hci_rp_le_read_resolv_list_size)),
4103         HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4104                       hci_cc_le_set_addr_resolution_enable),
4105         HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4106                sizeof(struct hci_rp_le_read_max_data_len)),
4107         HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4108                       hci_cc_write_le_host_supported),
4109         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4110         HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4111                sizeof(struct hci_rp_read_rssi)),
4112         HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4113                sizeof(struct hci_rp_read_tx_power)),
4114         HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4115         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4116                       hci_cc_le_set_ext_scan_param),
4117         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4118                       hci_cc_le_set_ext_scan_enable),
4119         HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4120         HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4121                hci_cc_le_read_num_adv_sets,
4122                sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4123         HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4124                sizeof(struct hci_rp_le_set_ext_adv_params)),
4125         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4126                       hci_cc_le_set_ext_adv_enable),
4127         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4128                       hci_cc_le_set_adv_set_random_addr),
4129         HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4130         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4131         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4132         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4133                       hci_cc_le_set_per_adv_enable),
4134         HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4135                sizeof(struct hci_rp_le_read_transmit_power)),
4136         HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4137         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4138                sizeof(struct hci_rp_le_read_buffer_size_v2)),
4139         HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4140                   sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4141         HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4142                sizeof(struct hci_rp_le_setup_iso_path)),
4143 };
4144
4145 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4146                       struct sk_buff *skb)
4147 {
4148         void *data;
4149
4150         if (skb->len < cc->min_len) {
4151                 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4152                            cc->op, skb->len, cc->min_len);
4153                 return HCI_ERROR_UNSPECIFIED;
4154         }
4155
4156         /* Just warn if the length is over max_len size it still be possible to
4157          * partially parse the cc so leave to callback to decide if that is
4158          * acceptable.
4159          */
4160         if (skb->len > cc->max_len)
4161                 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4162                             cc->op, skb->len, cc->max_len);
4163
4164         data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4165         if (!data)
4166                 return HCI_ERROR_UNSPECIFIED;
4167
4168         return cc->func(hdev, data, skb);
4169 }
4170
4171 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4172                                  struct sk_buff *skb, u16 *opcode, u8 *status,
4173                                  hci_req_complete_t *req_complete,
4174                                  hci_req_complete_skb_t *req_complete_skb)
4175 {
4176         struct hci_ev_cmd_complete *ev = data;
4177         int i;
4178
4179         *opcode = __le16_to_cpu(ev->opcode);
4180
4181         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4182
4183         for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4184                 if (hci_cc_table[i].op == *opcode) {
4185                         *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4186                         break;
4187                 }
4188         }
4189
4190         if (i == ARRAY_SIZE(hci_cc_table)) {
4191                 /* Unknown opcode, assume byte 0 contains the status, so
4192                  * that e.g. __hci_cmd_sync() properly returns errors
4193                  * for vendor specific commands send by HCI drivers.
4194                  * If a vendor doesn't actually follow this convention we may
4195                  * need to introduce a vendor CC table in order to properly set
4196                  * the status.
4197                  */
4198                 *status = skb->data[0];
4199         }
4200
4201         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4202
4203         hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4204                              req_complete_skb);
4205
4206         if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4207                 bt_dev_err(hdev,
4208                            "unexpected event for opcode 0x%4.4x", *opcode);
4209                 return;
4210         }
4211
4212         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4213                 queue_work(hdev->workqueue, &hdev->cmd_work);
4214 }
4215
4216 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4217 {
4218         struct hci_cp_le_create_cis *cp;
4219         int i;
4220
4221         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4222
4223         if (!status)
4224                 return;
4225
4226         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4227         if (!cp)
4228                 return;
4229
4230         hci_dev_lock(hdev);
4231
4232         /* Remove connection if command failed */
4233         for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4234                 struct hci_conn *conn;
4235                 u16 handle;
4236
4237                 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4238
4239                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4240                 if (conn) {
4241                         conn->state = BT_CLOSED;
4242                         hci_connect_cfm(conn, status);
4243                         hci_conn_del(conn);
4244                 }
4245         }
4246
4247         hci_dev_unlock(hdev);
4248 }
4249
4250 #define HCI_CS(_op, _func) \
4251 { \
4252         .op = _op, \
4253         .func = _func, \
4254 }
4255
4256 static const struct hci_cs {
4257         u16  op;
4258         void (*func)(struct hci_dev *hdev, __u8 status);
4259 } hci_cs_table[] = {
4260         HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4261         HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4262         HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4263         HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4264         HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4265         HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4266         HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4267         HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4268         HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4269                hci_cs_read_remote_ext_features),
4270         HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4271         HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4272                hci_cs_enhanced_setup_sync_conn),
4273         HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4274         HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4275         HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4276         HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4277         HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4278         HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4279         HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4280         HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4281         HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4282 };
4283
4284 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4285                                struct sk_buff *skb, u16 *opcode, u8 *status,
4286                                hci_req_complete_t *req_complete,
4287                                hci_req_complete_skb_t *req_complete_skb)
4288 {
4289         struct hci_ev_cmd_status *ev = data;
4290         int i;
4291
4292         *opcode = __le16_to_cpu(ev->opcode);
4293         *status = ev->status;
4294
4295         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4296
4297         for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4298                 if (hci_cs_table[i].op == *opcode) {
4299                         hci_cs_table[i].func(hdev, ev->status);
4300                         break;
4301                 }
4302         }
4303
4304         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4305
4306         /* Indicate request completion if the command failed. Also, if
4307          * we're not waiting for a special event and we get a success
4308          * command status we should try to flag the request as completed
4309          * (since for this kind of commands there will not be a command
4310          * complete event).
4311          */
4312         if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4313                 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4314                                      req_complete_skb);
4315                 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4316                         bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4317                                    *opcode);
4318                         return;
4319                 }
4320         }
4321
4322         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4323                 queue_work(hdev->workqueue, &hdev->cmd_work);
4324 }
4325
4326 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4327                                    struct sk_buff *skb)
4328 {
4329         struct hci_ev_hardware_error *ev = data;
4330
4331         bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4332
4333         hdev->hw_error_code = ev->code;
4334
4335         queue_work(hdev->req_workqueue, &hdev->error_reset);
4336 }
4337
4338 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4339                                 struct sk_buff *skb)
4340 {
4341         struct hci_ev_role_change *ev = data;
4342         struct hci_conn *conn;
4343
4344         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4345
4346         hci_dev_lock(hdev);
4347
4348         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4349         if (conn) {
4350                 if (!ev->status)
4351                         conn->role = ev->role;
4352
4353                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4354
4355                 hci_role_switch_cfm(conn, ev->status, ev->role);
4356         }
4357
4358         hci_dev_unlock(hdev);
4359 }
4360
4361 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4362                                   struct sk_buff *skb)
4363 {
4364         struct hci_ev_num_comp_pkts *ev = data;
4365         int i;
4366
4367         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4368                              flex_array_size(ev, handles, ev->num)))
4369                 return;
4370
4371         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4372                 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4373                 return;
4374         }
4375
4376         bt_dev_dbg(hdev, "num %d", ev->num);
4377
4378         for (i = 0; i < ev->num; i++) {
4379                 struct hci_comp_pkts_info *info = &ev->handles[i];
4380                 struct hci_conn *conn;
4381                 __u16  handle, count;
4382
4383                 handle = __le16_to_cpu(info->handle);
4384                 count  = __le16_to_cpu(info->count);
4385
4386                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4387                 if (!conn)
4388                         continue;
4389
4390                 conn->sent -= count;
4391
4392                 switch (conn->type) {
4393                 case ACL_LINK:
4394                         hdev->acl_cnt += count;
4395                         if (hdev->acl_cnt > hdev->acl_pkts)
4396                                 hdev->acl_cnt = hdev->acl_pkts;
4397                         break;
4398
4399                 case LE_LINK:
4400                         if (hdev->le_pkts) {
4401                                 hdev->le_cnt += count;
4402                                 if (hdev->le_cnt > hdev->le_pkts)
4403                                         hdev->le_cnt = hdev->le_pkts;
4404                         } else {
4405                                 hdev->acl_cnt += count;
4406                                 if (hdev->acl_cnt > hdev->acl_pkts)
4407                                         hdev->acl_cnt = hdev->acl_pkts;
4408                         }
4409                         break;
4410
4411                 case SCO_LINK:
4412                         hdev->sco_cnt += count;
4413                         if (hdev->sco_cnt > hdev->sco_pkts)
4414                                 hdev->sco_cnt = hdev->sco_pkts;
4415                         break;
4416
4417                 case ISO_LINK:
4418                         if (hdev->iso_pkts) {
4419                                 hdev->iso_cnt += count;
4420                                 if (hdev->iso_cnt > hdev->iso_pkts)
4421                                         hdev->iso_cnt = hdev->iso_pkts;
4422                         } else if (hdev->le_pkts) {
4423                                 hdev->le_cnt += count;
4424                                 if (hdev->le_cnt > hdev->le_pkts)
4425                                         hdev->le_cnt = hdev->le_pkts;
4426                         } else {
4427                                 hdev->acl_cnt += count;
4428                                 if (hdev->acl_cnt > hdev->acl_pkts)
4429                                         hdev->acl_cnt = hdev->acl_pkts;
4430                         }
4431                         break;
4432
4433                 default:
4434                         bt_dev_err(hdev, "unknown type %d conn %p",
4435                                    conn->type, conn);
4436                         break;
4437                 }
4438         }
4439
4440         queue_work(hdev->workqueue, &hdev->tx_work);
4441 }
4442
4443 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4444                                                  __u16 handle)
4445 {
4446         struct hci_chan *chan;
4447
4448         switch (hdev->dev_type) {
4449         case HCI_PRIMARY:
4450                 return hci_conn_hash_lookup_handle(hdev, handle);
4451         case HCI_AMP:
4452                 chan = hci_chan_lookup_handle(hdev, handle);
4453                 if (chan)
4454                         return chan->conn;
4455                 break;
4456         default:
4457                 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4458                 break;
4459         }
4460
4461         return NULL;
4462 }
4463
4464 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4465                                     struct sk_buff *skb)
4466 {
4467         struct hci_ev_num_comp_blocks *ev = data;
4468         int i;
4469
4470         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4471                              flex_array_size(ev, handles, ev->num_hndl)))
4472                 return;
4473
4474         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4475                 bt_dev_err(hdev, "wrong event for mode %d",
4476                            hdev->flow_ctl_mode);
4477                 return;
4478         }
4479
4480         bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4481                    ev->num_hndl);
4482
4483         for (i = 0; i < ev->num_hndl; i++) {
4484                 struct hci_comp_blocks_info *info = &ev->handles[i];
4485                 struct hci_conn *conn = NULL;
4486                 __u16  handle, block_count;
4487
4488                 handle = __le16_to_cpu(info->handle);
4489                 block_count = __le16_to_cpu(info->blocks);
4490
4491                 conn = __hci_conn_lookup_handle(hdev, handle);
4492                 if (!conn)
4493                         continue;
4494
4495                 conn->sent -= block_count;
4496
4497                 switch (conn->type) {
4498                 case ACL_LINK:
4499                 case AMP_LINK:
4500                         hdev->block_cnt += block_count;
4501                         if (hdev->block_cnt > hdev->num_blocks)
4502                                 hdev->block_cnt = hdev->num_blocks;
4503                         break;
4504
4505                 default:
4506                         bt_dev_err(hdev, "unknown type %d conn %p",
4507                                    conn->type, conn);
4508                         break;
4509                 }
4510         }
4511
4512         queue_work(hdev->workqueue, &hdev->tx_work);
4513 }
4514
4515 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4516                                 struct sk_buff *skb)
4517 {
4518         struct hci_ev_mode_change *ev = data;
4519         struct hci_conn *conn;
4520
4521         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4522
4523         hci_dev_lock(hdev);
4524
4525         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4526         if (conn) {
4527                 conn->mode = ev->mode;
4528
4529                 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4530                                         &conn->flags)) {
4531                         if (conn->mode == HCI_CM_ACTIVE)
4532                                 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4533                         else
4534                                 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4535                 }
4536
4537                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4538                         hci_sco_setup(conn, ev->status);
4539         }
4540
4541         hci_dev_unlock(hdev);
4542 }
4543
4544 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4545                                      struct sk_buff *skb)
4546 {
4547         struct hci_ev_pin_code_req *ev = data;
4548         struct hci_conn *conn;
4549
4550         bt_dev_dbg(hdev, "");
4551
4552         hci_dev_lock(hdev);
4553
4554         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4555         if (!conn)
4556                 goto unlock;
4557
4558         if (conn->state == BT_CONNECTED) {
4559                 hci_conn_hold(conn);
4560                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4561                 hci_conn_drop(conn);
4562         }
4563
4564         if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4565             !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4566                 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4567                              sizeof(ev->bdaddr), &ev->bdaddr);
4568         } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4569                 u8 secure;
4570
4571                 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4572                         secure = 1;
4573                 else
4574                         secure = 0;
4575
4576                 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4577         }
4578
4579 unlock:
4580         hci_dev_unlock(hdev);
4581 }
4582
4583 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4584 {
4585         if (key_type == HCI_LK_CHANGED_COMBINATION)
4586                 return;
4587
4588         conn->pin_length = pin_len;
4589         conn->key_type = key_type;
4590
4591         switch (key_type) {
4592         case HCI_LK_LOCAL_UNIT:
4593         case HCI_LK_REMOTE_UNIT:
4594         case HCI_LK_DEBUG_COMBINATION:
4595                 return;
4596         case HCI_LK_COMBINATION:
4597                 if (pin_len == 16)
4598                         conn->pending_sec_level = BT_SECURITY_HIGH;
4599                 else
4600                         conn->pending_sec_level = BT_SECURITY_MEDIUM;
4601                 break;
4602         case HCI_LK_UNAUTH_COMBINATION_P192:
4603         case HCI_LK_UNAUTH_COMBINATION_P256:
4604                 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4605                 break;
4606         case HCI_LK_AUTH_COMBINATION_P192:
4607                 conn->pending_sec_level = BT_SECURITY_HIGH;
4608                 break;
4609         case HCI_LK_AUTH_COMBINATION_P256:
4610                 conn->pending_sec_level = BT_SECURITY_FIPS;
4611                 break;
4612         }
4613 }
4614
4615 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4616                                      struct sk_buff *skb)
4617 {
4618         struct hci_ev_link_key_req *ev = data;
4619         struct hci_cp_link_key_reply cp;
4620         struct hci_conn *conn;
4621         struct link_key *key;
4622
4623         bt_dev_dbg(hdev, "");
4624
4625         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4626                 return;
4627
4628         hci_dev_lock(hdev);
4629
4630         key = hci_find_link_key(hdev, &ev->bdaddr);
4631         if (!key) {
4632                 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4633                 goto not_found;
4634         }
4635
4636         bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4637
4638         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4639         if (conn) {
4640                 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4641
4642                 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4643                      key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4644                     conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4645                         bt_dev_dbg(hdev, "ignoring unauthenticated key");
4646                         goto not_found;
4647                 }
4648
4649                 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4650                     (conn->pending_sec_level == BT_SECURITY_HIGH ||
4651                      conn->pending_sec_level == BT_SECURITY_FIPS)) {
4652                         bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4653                         goto not_found;
4654                 }
4655
4656                 conn_set_key(conn, key->type, key->pin_len);
4657         }
4658
4659         bacpy(&cp.bdaddr, &ev->bdaddr);
4660         memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4661
4662         hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4663
4664         hci_dev_unlock(hdev);
4665
4666         return;
4667
4668 not_found:
4669         hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4670         hci_dev_unlock(hdev);
4671 }
4672
4673 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4674                                     struct sk_buff *skb)
4675 {
4676         struct hci_ev_link_key_notify *ev = data;
4677         struct hci_conn *conn;
4678         struct link_key *key;
4679         bool persistent;
4680         u8 pin_len = 0;
4681
4682         bt_dev_dbg(hdev, "");
4683
4684         hci_dev_lock(hdev);
4685
4686         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4687         if (!conn)
4688                 goto unlock;
4689
4690         hci_conn_hold(conn);
4691         conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4692         hci_conn_drop(conn);
4693
4694         set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4695         conn_set_key(conn, ev->key_type, conn->pin_length);
4696
4697         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4698                 goto unlock;
4699
4700         key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4701                                 ev->key_type, pin_len, &persistent);
4702         if (!key)
4703                 goto unlock;
4704
4705         /* Update connection information since adding the key will have
4706          * fixed up the type in the case of changed combination keys.
4707          */
4708         if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4709                 conn_set_key(conn, key->type, key->pin_len);
4710
4711         mgmt_new_link_key(hdev, key, persistent);
4712
4713         /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4714          * is set. If it's not set simply remove the key from the kernel
4715          * list (we've still notified user space about it but with
4716          * store_hint being 0).
4717          */
4718         if (key->type == HCI_LK_DEBUG_COMBINATION &&
4719             !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4720                 list_del_rcu(&key->list);
4721                 kfree_rcu(key, rcu);
4722                 goto unlock;
4723         }
4724
4725         if (persistent)
4726                 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4727         else
4728                 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4729
4730 unlock:
4731         hci_dev_unlock(hdev);
4732 }
4733
4734 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4735                                  struct sk_buff *skb)
4736 {
4737         struct hci_ev_clock_offset *ev = data;
4738         struct hci_conn *conn;
4739
4740         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4741
4742         hci_dev_lock(hdev);
4743
4744         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4745         if (conn && !ev->status) {
4746                 struct inquiry_entry *ie;
4747
4748                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4749                 if (ie) {
4750                         ie->data.clock_offset = ev->clock_offset;
4751                         ie->timestamp = jiffies;
4752                 }
4753         }
4754
4755         hci_dev_unlock(hdev);
4756 }
4757
4758 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4759                                     struct sk_buff *skb)
4760 {
4761         struct hci_ev_pkt_type_change *ev = data;
4762         struct hci_conn *conn;
4763
4764         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4765
4766         hci_dev_lock(hdev);
4767
4768         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4769         if (conn && !ev->status)
4770                 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4771
4772         hci_dev_unlock(hdev);
4773 }
4774
4775 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4776                                    struct sk_buff *skb)
4777 {
4778         struct hci_ev_pscan_rep_mode *ev = data;
4779         struct inquiry_entry *ie;
4780
4781         bt_dev_dbg(hdev, "");
4782
4783         hci_dev_lock(hdev);
4784
4785         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4786         if (ie) {
4787                 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4788                 ie->timestamp = jiffies;
4789         }
4790
4791         hci_dev_unlock(hdev);
4792 }
4793
4794 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4795                                              struct sk_buff *skb)
4796 {
4797         struct hci_ev_inquiry_result_rssi *ev = edata;
4798         struct inquiry_data data;
4799         int i;
4800
4801         bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4802
4803         if (!ev->num)
4804                 return;
4805
4806         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4807                 return;
4808
4809         hci_dev_lock(hdev);
4810
4811         if (skb->len == array_size(ev->num,
4812                                    sizeof(struct inquiry_info_rssi_pscan))) {
4813                 struct inquiry_info_rssi_pscan *info;
4814
4815                 for (i = 0; i < ev->num; i++) {
4816                         u32 flags;
4817
4818                         info = hci_ev_skb_pull(hdev, skb,
4819                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4820                                                sizeof(*info));
4821                         if (!info) {
4822                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4823                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4824                                 goto unlock;
4825                         }
4826
4827                         bacpy(&data.bdaddr, &info->bdaddr);
4828                         data.pscan_rep_mode     = info->pscan_rep_mode;
4829                         data.pscan_period_mode  = info->pscan_period_mode;
4830                         data.pscan_mode         = info->pscan_mode;
4831                         memcpy(data.dev_class, info->dev_class, 3);
4832                         data.clock_offset       = info->clock_offset;
4833                         data.rssi               = info->rssi;
4834                         data.ssp_mode           = 0x00;
4835
4836                         flags = hci_inquiry_cache_update(hdev, &data, false);
4837
4838                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4839                                           info->dev_class, info->rssi,
4840                                           flags, NULL, 0, NULL, 0, 0);
4841                 }
4842         } else if (skb->len == array_size(ev->num,
4843                                           sizeof(struct inquiry_info_rssi))) {
4844                 struct inquiry_info_rssi *info;
4845
4846                 for (i = 0; i < ev->num; i++) {
4847                         u32 flags;
4848
4849                         info = hci_ev_skb_pull(hdev, skb,
4850                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4851                                                sizeof(*info));
4852                         if (!info) {
4853                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4854                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4855                                 goto unlock;
4856                         }
4857
4858                         bacpy(&data.bdaddr, &info->bdaddr);
4859                         data.pscan_rep_mode     = info->pscan_rep_mode;
4860                         data.pscan_period_mode  = info->pscan_period_mode;
4861                         data.pscan_mode         = 0x00;
4862                         memcpy(data.dev_class, info->dev_class, 3);
4863                         data.clock_offset       = info->clock_offset;
4864                         data.rssi               = info->rssi;
4865                         data.ssp_mode           = 0x00;
4866
4867                         flags = hci_inquiry_cache_update(hdev, &data, false);
4868
4869                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4870                                           info->dev_class, info->rssi,
4871                                           flags, NULL, 0, NULL, 0, 0);
4872                 }
4873         } else {
4874                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4875                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4876         }
4877 unlock:
4878         hci_dev_unlock(hdev);
4879 }
4880
4881 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
4882                                         struct sk_buff *skb)
4883 {
4884         struct hci_ev_remote_ext_features *ev = data;
4885         struct hci_conn *conn;
4886
4887         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4888
4889         hci_dev_lock(hdev);
4890
4891         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4892         if (!conn)
4893                 goto unlock;
4894
4895         if (ev->page < HCI_MAX_PAGES)
4896                 memcpy(conn->features[ev->page], ev->features, 8);
4897
4898         if (!ev->status && ev->page == 0x01) {
4899                 struct inquiry_entry *ie;
4900
4901                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4902                 if (ie)
4903                         ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4904
4905                 if (ev->features[0] & LMP_HOST_SSP) {
4906                         set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4907                 } else {
4908                         /* It is mandatory by the Bluetooth specification that
4909                          * Extended Inquiry Results are only used when Secure
4910                          * Simple Pairing is enabled, but some devices violate
4911                          * this.
4912                          *
4913                          * To make these devices work, the internal SSP
4914                          * enabled flag needs to be cleared if the remote host
4915                          * features do not indicate SSP support */
4916                         clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4917                 }
4918
4919                 if (ev->features[0] & LMP_HOST_SC)
4920                         set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
4921         }
4922
4923         if (conn->state != BT_CONFIG)
4924                 goto unlock;
4925
4926         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
4927                 struct hci_cp_remote_name_req cp;
4928                 memset(&cp, 0, sizeof(cp));
4929                 bacpy(&cp.bdaddr, &conn->dst);
4930                 cp.pscan_rep_mode = 0x02;
4931                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
4932         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4933                 mgmt_device_connected(hdev, conn, NULL, 0);
4934
4935         if (!hci_outgoing_auth_needed(hdev, conn)) {
4936                 conn->state = BT_CONNECTED;
4937                 hci_connect_cfm(conn, ev->status);
4938                 hci_conn_drop(conn);
4939         }
4940
4941 unlock:
4942         hci_dev_unlock(hdev);
4943 }
4944
4945 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
4946                                        struct sk_buff *skb)
4947 {
4948         struct hci_ev_sync_conn_complete *ev = data;
4949         struct hci_conn *conn;
4950         u8 status = ev->status;
4951
4952         switch (ev->link_type) {
4953         case SCO_LINK:
4954         case ESCO_LINK:
4955                 break;
4956         default:
4957                 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
4958                  * for HCI_Synchronous_Connection_Complete is limited to
4959                  * either SCO or eSCO
4960                  */
4961                 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
4962                 return;
4963         }
4964
4965         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4966
4967         hci_dev_lock(hdev);
4968
4969         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
4970         if (!conn) {
4971                 if (ev->link_type == ESCO_LINK)
4972                         goto unlock;
4973
4974                 /* When the link type in the event indicates SCO connection
4975                  * and lookup of the connection object fails, then check
4976                  * if an eSCO connection object exists.
4977                  *
4978                  * The core limits the synchronous connections to either
4979                  * SCO or eSCO. The eSCO connection is preferred and tried
4980                  * to be setup first and until successfully established,
4981                  * the link type will be hinted as eSCO.
4982                  */
4983                 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
4984                 if (!conn)
4985                         goto unlock;
4986         }
4987
4988         /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
4989          * Processing it more than once per connection can corrupt kernel memory.
4990          *
4991          * As the connection handle is set here for the first time, it indicates
4992          * whether the connection is already set up.
4993          */
4994         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
4995                 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
4996                 goto unlock;
4997         }
4998
4999         switch (status) {
5000         case 0x00:
5001                 conn->handle = __le16_to_cpu(ev->handle);
5002                 if (conn->handle > HCI_CONN_HANDLE_MAX) {
5003                         bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
5004                                    conn->handle, HCI_CONN_HANDLE_MAX);
5005                         status = HCI_ERROR_INVALID_PARAMETERS;
5006                         conn->state = BT_CLOSED;
5007                         break;
5008                 }
5009
5010                 conn->state  = BT_CONNECTED;
5011                 conn->type   = ev->link_type;
5012
5013                 hci_debugfs_create_conn(conn);
5014                 hci_conn_add_sysfs(conn);
5015                 break;
5016
5017         case 0x10:      /* Connection Accept Timeout */
5018         case 0x0d:      /* Connection Rejected due to Limited Resources */
5019         case 0x11:      /* Unsupported Feature or Parameter Value */
5020         case 0x1c:      /* SCO interval rejected */
5021         case 0x1a:      /* Unsupported Remote Feature */
5022         case 0x1e:      /* Invalid LMP Parameters */
5023         case 0x1f:      /* Unspecified error */
5024         case 0x20:      /* Unsupported LMP Parameter value */
5025                 if (conn->out) {
5026                         conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5027                                         (hdev->esco_type & EDR_ESCO_MASK);
5028                         if (hci_setup_sync(conn, conn->link->handle))
5029                                 goto unlock;
5030                 }
5031                 fallthrough;
5032
5033         default:
5034                 conn->state = BT_CLOSED;
5035                 break;
5036         }
5037
5038         bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5039         /* Notify only in case of SCO over HCI transport data path which
5040          * is zero and non-zero value shall be non-HCI transport data path
5041          */
5042         if (conn->codec.data_path == 0 && hdev->notify) {
5043                 switch (ev->air_mode) {
5044                 case 0x02:
5045                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5046                         break;
5047                 case 0x03:
5048                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5049                         break;
5050                 }
5051         }
5052
5053         hci_connect_cfm(conn, status);
5054         if (status)
5055                 hci_conn_del(conn);
5056
5057 unlock:
5058         hci_dev_unlock(hdev);
5059 }
5060
5061 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5062 {
5063         size_t parsed = 0;
5064
5065         while (parsed < eir_len) {
5066                 u8 field_len = eir[0];
5067
5068                 if (field_len == 0)
5069                         return parsed;
5070
5071                 parsed += field_len + 1;
5072                 eir += field_len + 1;
5073         }
5074
5075         return eir_len;
5076 }
5077
5078 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5079                                             struct sk_buff *skb)
5080 {
5081         struct hci_ev_ext_inquiry_result *ev = edata;
5082         struct inquiry_data data;
5083         size_t eir_len;
5084         int i;
5085
5086         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5087                              flex_array_size(ev, info, ev->num)))
5088                 return;
5089
5090         bt_dev_dbg(hdev, "num %d", ev->num);
5091
5092         if (!ev->num)
5093                 return;
5094
5095         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5096                 return;
5097
5098         hci_dev_lock(hdev);
5099
5100         for (i = 0; i < ev->num; i++) {
5101                 struct extended_inquiry_info *info = &ev->info[i];
5102                 u32 flags;
5103                 bool name_known;
5104
5105                 bacpy(&data.bdaddr, &info->bdaddr);
5106                 data.pscan_rep_mode     = info->pscan_rep_mode;
5107                 data.pscan_period_mode  = info->pscan_period_mode;
5108                 data.pscan_mode         = 0x00;
5109                 memcpy(data.dev_class, info->dev_class, 3);
5110                 data.clock_offset       = info->clock_offset;
5111                 data.rssi               = info->rssi;
5112                 data.ssp_mode           = 0x01;
5113
5114                 if (hci_dev_test_flag(hdev, HCI_MGMT))
5115                         name_known = eir_get_data(info->data,
5116                                                   sizeof(info->data),
5117                                                   EIR_NAME_COMPLETE, NULL);
5118                 else
5119                         name_known = true;
5120
5121                 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5122
5123                 eir_len = eir_get_length(info->data, sizeof(info->data));
5124
5125                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5126                                   info->dev_class, info->rssi,
5127                                   flags, info->data, eir_len, NULL, 0, 0);
5128         }
5129
5130         hci_dev_unlock(hdev);
5131 }
5132
5133 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5134                                          struct sk_buff *skb)
5135 {
5136         struct hci_ev_key_refresh_complete *ev = data;
5137         struct hci_conn *conn;
5138
5139         bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5140                    __le16_to_cpu(ev->handle));
5141
5142         hci_dev_lock(hdev);
5143
5144         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5145         if (!conn)
5146                 goto unlock;
5147
5148         /* For BR/EDR the necessary steps are taken through the
5149          * auth_complete event.
5150          */
5151         if (conn->type != LE_LINK)
5152                 goto unlock;
5153
5154         if (!ev->status)
5155                 conn->sec_level = conn->pending_sec_level;
5156
5157         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5158
5159         if (ev->status && conn->state == BT_CONNECTED) {
5160                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5161                 hci_conn_drop(conn);
5162                 goto unlock;
5163         }
5164
5165         if (conn->state == BT_CONFIG) {
5166                 if (!ev->status)
5167                         conn->state = BT_CONNECTED;
5168
5169                 hci_connect_cfm(conn, ev->status);
5170                 hci_conn_drop(conn);
5171         } else {
5172                 hci_auth_cfm(conn, ev->status);
5173
5174                 hci_conn_hold(conn);
5175                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5176                 hci_conn_drop(conn);
5177         }
5178
5179 unlock:
5180         hci_dev_unlock(hdev);
5181 }
5182
5183 static u8 hci_get_auth_req(struct hci_conn *conn)
5184 {
5185         /* If remote requests no-bonding follow that lead */
5186         if (conn->remote_auth == HCI_AT_NO_BONDING ||
5187             conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5188                 return conn->remote_auth | (conn->auth_type & 0x01);
5189
5190         /* If both remote and local have enough IO capabilities, require
5191          * MITM protection
5192          */
5193         if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5194             conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5195                 return conn->remote_auth | 0x01;
5196
5197         /* No MITM protection possible so ignore remote requirement */
5198         return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5199 }
5200
5201 static u8 bredr_oob_data_present(struct hci_conn *conn)
5202 {
5203         struct hci_dev *hdev = conn->hdev;
5204         struct oob_data *data;
5205
5206         data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5207         if (!data)
5208                 return 0x00;
5209
5210         if (bredr_sc_enabled(hdev)) {
5211                 /* When Secure Connections is enabled, then just
5212                  * return the present value stored with the OOB
5213                  * data. The stored value contains the right present
5214                  * information. However it can only be trusted when
5215                  * not in Secure Connection Only mode.
5216                  */
5217                 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5218                         return data->present;
5219
5220                 /* When Secure Connections Only mode is enabled, then
5221                  * the P-256 values are required. If they are not
5222                  * available, then do not declare that OOB data is
5223                  * present.
5224                  */
5225                 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
5226                     !memcmp(data->hash256, ZERO_KEY, 16))
5227                         return 0x00;
5228
5229                 return 0x02;
5230         }
5231
5232         /* When Secure Connections is not enabled or actually
5233          * not supported by the hardware, then check that if
5234          * P-192 data values are present.
5235          */
5236         if (!memcmp(data->rand192, ZERO_KEY, 16) ||
5237             !memcmp(data->hash192, ZERO_KEY, 16))
5238                 return 0x00;
5239
5240         return 0x01;
5241 }
5242
5243 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5244                                     struct sk_buff *skb)
5245 {
5246         struct hci_ev_io_capa_request *ev = data;
5247         struct hci_conn *conn;
5248
5249         bt_dev_dbg(hdev, "");
5250
5251         hci_dev_lock(hdev);
5252
5253         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5254         if (!conn)
5255                 goto unlock;
5256
5257         hci_conn_hold(conn);
5258
5259         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5260                 goto unlock;
5261
5262         /* Allow pairing if we're pairable, the initiators of the
5263          * pairing or if the remote is not requesting bonding.
5264          */
5265         if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5266             test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5267             (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5268                 struct hci_cp_io_capability_reply cp;
5269
5270                 bacpy(&cp.bdaddr, &ev->bdaddr);
5271                 /* Change the IO capability from KeyboardDisplay
5272                  * to DisplayYesNo as it is not supported by BT spec. */
5273                 cp.capability = (conn->io_capability == 0x04) ?
5274                                 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5275
5276                 /* If we are initiators, there is no remote information yet */
5277                 if (conn->remote_auth == 0xff) {
5278                         /* Request MITM protection if our IO caps allow it
5279                          * except for the no-bonding case.
5280                          */
5281                         if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5282                             conn->auth_type != HCI_AT_NO_BONDING)
5283                                 conn->auth_type |= 0x01;
5284                 } else {
5285                         conn->auth_type = hci_get_auth_req(conn);
5286                 }
5287
5288                 /* If we're not bondable, force one of the non-bondable
5289                  * authentication requirement values.
5290                  */
5291                 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5292                         conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5293
5294                 cp.authentication = conn->auth_type;
5295                 cp.oob_data = bredr_oob_data_present(conn);
5296
5297                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5298                              sizeof(cp), &cp);
5299         } else {
5300                 struct hci_cp_io_capability_neg_reply cp;
5301
5302                 bacpy(&cp.bdaddr, &ev->bdaddr);
5303                 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5304
5305                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5306                              sizeof(cp), &cp);
5307         }
5308
5309 unlock:
5310         hci_dev_unlock(hdev);
5311 }
5312
5313 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5314                                   struct sk_buff *skb)
5315 {
5316         struct hci_ev_io_capa_reply *ev = data;
5317         struct hci_conn *conn;
5318
5319         bt_dev_dbg(hdev, "");
5320
5321         hci_dev_lock(hdev);
5322
5323         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5324         if (!conn)
5325                 goto unlock;
5326
5327         conn->remote_cap = ev->capability;
5328         conn->remote_auth = ev->authentication;
5329
5330 unlock:
5331         hci_dev_unlock(hdev);
5332 }
5333
5334 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5335                                          struct sk_buff *skb)
5336 {
5337         struct hci_ev_user_confirm_req *ev = data;
5338         int loc_mitm, rem_mitm, confirm_hint = 0;
5339         struct hci_conn *conn;
5340
5341         bt_dev_dbg(hdev, "");
5342
5343         hci_dev_lock(hdev);
5344
5345         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5346                 goto unlock;
5347
5348         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5349         if (!conn)
5350                 goto unlock;
5351
5352         loc_mitm = (conn->auth_type & 0x01);
5353         rem_mitm = (conn->remote_auth & 0x01);
5354
5355         /* If we require MITM but the remote device can't provide that
5356          * (it has NoInputNoOutput) then reject the confirmation
5357          * request. We check the security level here since it doesn't
5358          * necessarily match conn->auth_type.
5359          */
5360         if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5361             conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5362                 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5363                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5364                              sizeof(ev->bdaddr), &ev->bdaddr);
5365                 goto unlock;
5366         }
5367
5368         /* If no side requires MITM protection; auto-accept */
5369         if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5370             (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5371
5372                 /* If we're not the initiators request authorization to
5373                  * proceed from user space (mgmt_user_confirm with
5374                  * confirm_hint set to 1). The exception is if neither
5375                  * side had MITM or if the local IO capability is
5376                  * NoInputNoOutput, in which case we do auto-accept
5377                  */
5378                 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5379                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5380                     (loc_mitm || rem_mitm)) {
5381                         bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5382                         confirm_hint = 1;
5383                         goto confirm;
5384                 }
5385
5386                 /* If there already exists link key in local host, leave the
5387                  * decision to user space since the remote device could be
5388                  * legitimate or malicious.
5389                  */
5390                 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5391                         bt_dev_dbg(hdev, "Local host already has link key");
5392                         confirm_hint = 1;
5393                         goto confirm;
5394                 }
5395
5396                 BT_DBG("Auto-accept of user confirmation with %ums delay",
5397                        hdev->auto_accept_delay);
5398
5399                 if (hdev->auto_accept_delay > 0) {
5400                         int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5401                         queue_delayed_work(conn->hdev->workqueue,
5402                                            &conn->auto_accept_work, delay);
5403                         goto unlock;
5404                 }
5405
5406                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5407                              sizeof(ev->bdaddr), &ev->bdaddr);
5408                 goto unlock;
5409         }
5410
5411 confirm:
5412         mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5413                                   le32_to_cpu(ev->passkey), confirm_hint);
5414
5415 unlock:
5416         hci_dev_unlock(hdev);
5417 }
5418
5419 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5420                                          struct sk_buff *skb)
5421 {
5422         struct hci_ev_user_passkey_req *ev = data;
5423
5424         bt_dev_dbg(hdev, "");
5425
5426         if (hci_dev_test_flag(hdev, HCI_MGMT))
5427                 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5428 }
5429
5430 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5431                                         struct sk_buff *skb)
5432 {
5433         struct hci_ev_user_passkey_notify *ev = data;
5434         struct hci_conn *conn;
5435
5436         bt_dev_dbg(hdev, "");
5437
5438         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5439         if (!conn)
5440                 return;
5441
5442         conn->passkey_notify = __le32_to_cpu(ev->passkey);
5443         conn->passkey_entered = 0;
5444
5445         if (hci_dev_test_flag(hdev, HCI_MGMT))
5446                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5447                                          conn->dst_type, conn->passkey_notify,
5448                                          conn->passkey_entered);
5449 }
5450
5451 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5452                                     struct sk_buff *skb)
5453 {
5454         struct hci_ev_keypress_notify *ev = data;
5455         struct hci_conn *conn;
5456
5457         bt_dev_dbg(hdev, "");
5458
5459         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5460         if (!conn)
5461                 return;
5462
5463         switch (ev->type) {
5464         case HCI_KEYPRESS_STARTED:
5465                 conn->passkey_entered = 0;
5466                 return;
5467
5468         case HCI_KEYPRESS_ENTERED:
5469                 conn->passkey_entered++;
5470                 break;
5471
5472         case HCI_KEYPRESS_ERASED:
5473                 conn->passkey_entered--;
5474                 break;
5475
5476         case HCI_KEYPRESS_CLEARED:
5477                 conn->passkey_entered = 0;
5478                 break;
5479
5480         case HCI_KEYPRESS_COMPLETED:
5481                 return;
5482         }
5483
5484         if (hci_dev_test_flag(hdev, HCI_MGMT))
5485                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5486                                          conn->dst_type, conn->passkey_notify,
5487                                          conn->passkey_entered);
5488 }
5489
5490 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5491                                          struct sk_buff *skb)
5492 {
5493         struct hci_ev_simple_pair_complete *ev = data;
5494         struct hci_conn *conn;
5495
5496         bt_dev_dbg(hdev, "");
5497
5498         hci_dev_lock(hdev);
5499
5500         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5501         if (!conn)
5502                 goto unlock;
5503
5504         /* Reset the authentication requirement to unknown */
5505         conn->remote_auth = 0xff;
5506
5507         /* To avoid duplicate auth_failed events to user space we check
5508          * the HCI_CONN_AUTH_PEND flag which will be set if we
5509          * initiated the authentication. A traditional auth_complete
5510          * event gets always produced as initiator and is also mapped to
5511          * the mgmt_auth_failed event */
5512         if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5513                 mgmt_auth_failed(conn, ev->status);
5514
5515         hci_conn_drop(conn);
5516
5517 unlock:
5518         hci_dev_unlock(hdev);
5519 }
5520
5521 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5522                                          struct sk_buff *skb)
5523 {
5524         struct hci_ev_remote_host_features *ev = data;
5525         struct inquiry_entry *ie;
5526         struct hci_conn *conn;
5527
5528         bt_dev_dbg(hdev, "");
5529
5530         hci_dev_lock(hdev);
5531
5532         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5533         if (conn)
5534                 memcpy(conn->features[1], ev->features, 8);
5535
5536         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5537         if (ie)
5538                 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5539
5540         hci_dev_unlock(hdev);
5541 }
5542
5543 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5544                                             struct sk_buff *skb)
5545 {
5546         struct hci_ev_remote_oob_data_request *ev = edata;
5547         struct oob_data *data;
5548
5549         bt_dev_dbg(hdev, "");
5550
5551         hci_dev_lock(hdev);
5552
5553         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5554                 goto unlock;
5555
5556         data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5557         if (!data) {
5558                 struct hci_cp_remote_oob_data_neg_reply cp;
5559
5560                 bacpy(&cp.bdaddr, &ev->bdaddr);
5561                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5562                              sizeof(cp), &cp);
5563                 goto unlock;
5564         }
5565
5566         if (bredr_sc_enabled(hdev)) {
5567                 struct hci_cp_remote_oob_ext_data_reply cp;
5568
5569                 bacpy(&cp.bdaddr, &ev->bdaddr);
5570                 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5571                         memset(cp.hash192, 0, sizeof(cp.hash192));
5572                         memset(cp.rand192, 0, sizeof(cp.rand192));
5573                 } else {
5574                         memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5575                         memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5576                 }
5577                 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5578                 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5579
5580                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5581                              sizeof(cp), &cp);
5582         } else {
5583                 struct hci_cp_remote_oob_data_reply cp;
5584
5585                 bacpy(&cp.bdaddr, &ev->bdaddr);
5586                 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5587                 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5588
5589                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5590                              sizeof(cp), &cp);
5591         }
5592
5593 unlock:
5594         hci_dev_unlock(hdev);
5595 }
5596
5597 #if IS_ENABLED(CONFIG_BT_HS)
5598 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5599                                   struct sk_buff *skb)
5600 {
5601         struct hci_ev_channel_selected *ev = data;
5602         struct hci_conn *hcon;
5603
5604         bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5605
5606         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5607         if (!hcon)
5608                 return;
5609
5610         amp_read_loc_assoc_final_data(hdev, hcon);
5611 }
5612
5613 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5614                                       struct sk_buff *skb)
5615 {
5616         struct hci_ev_phy_link_complete *ev = data;
5617         struct hci_conn *hcon, *bredr_hcon;
5618
5619         bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5620                    ev->status);
5621
5622         hci_dev_lock(hdev);
5623
5624         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5625         if (!hcon)
5626                 goto unlock;
5627
5628         if (!hcon->amp_mgr)
5629                 goto unlock;
5630
5631         if (ev->status) {
5632                 hci_conn_del(hcon);
5633                 goto unlock;
5634         }
5635
5636         bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5637
5638         hcon->state = BT_CONNECTED;
5639         bacpy(&hcon->dst, &bredr_hcon->dst);
5640
5641         hci_conn_hold(hcon);
5642         hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5643         hci_conn_drop(hcon);
5644
5645         hci_debugfs_create_conn(hcon);
5646         hci_conn_add_sysfs(hcon);
5647
5648         amp_physical_cfm(bredr_hcon, hcon);
5649
5650 unlock:
5651         hci_dev_unlock(hdev);
5652 }
5653
5654 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5655                                      struct sk_buff *skb)
5656 {
5657         struct hci_ev_logical_link_complete *ev = data;
5658         struct hci_conn *hcon;
5659         struct hci_chan *hchan;
5660         struct amp_mgr *mgr;
5661
5662         bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5663                    le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5664
5665         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5666         if (!hcon)
5667                 return;
5668
5669         /* Create AMP hchan */
5670         hchan = hci_chan_create(hcon);
5671         if (!hchan)
5672                 return;
5673
5674         hchan->handle = le16_to_cpu(ev->handle);
5675         hchan->amp = true;
5676
5677         BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5678
5679         mgr = hcon->amp_mgr;
5680         if (mgr && mgr->bredr_chan) {
5681                 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5682
5683                 l2cap_chan_lock(bredr_chan);
5684
5685                 bredr_chan->conn->mtu = hdev->block_mtu;
5686                 l2cap_logical_cfm(bredr_chan, hchan, 0);
5687                 hci_conn_hold(hcon);
5688
5689                 l2cap_chan_unlock(bredr_chan);
5690         }
5691 }
5692
5693 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5694                                              struct sk_buff *skb)
5695 {
5696         struct hci_ev_disconn_logical_link_complete *ev = data;
5697         struct hci_chan *hchan;
5698
5699         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5700                    le16_to_cpu(ev->handle), ev->status);
5701
5702         if (ev->status)
5703                 return;
5704
5705         hci_dev_lock(hdev);
5706
5707         hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5708         if (!hchan || !hchan->amp)
5709                 goto unlock;
5710
5711         amp_destroy_logical_link(hchan, ev->reason);
5712
5713 unlock:
5714         hci_dev_unlock(hdev);
5715 }
5716
5717 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5718                                              struct sk_buff *skb)
5719 {
5720         struct hci_ev_disconn_phy_link_complete *ev = data;
5721         struct hci_conn *hcon;
5722
5723         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5724
5725         if (ev->status)
5726                 return;
5727
5728         hci_dev_lock(hdev);
5729
5730         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5731         if (hcon && hcon->type == AMP_LINK) {
5732                 hcon->state = BT_CLOSED;
5733                 hci_disconn_cfm(hcon, ev->reason);
5734                 hci_conn_del(hcon);
5735         }
5736
5737         hci_dev_unlock(hdev);
5738 }
5739 #endif
5740
5741 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5742                                 u8 bdaddr_type, bdaddr_t *local_rpa)
5743 {
5744         if (conn->out) {
5745                 conn->dst_type = bdaddr_type;
5746                 conn->resp_addr_type = bdaddr_type;
5747                 bacpy(&conn->resp_addr, bdaddr);
5748
5749                 /* Check if the controller has set a Local RPA then it must be
5750                  * used instead or hdev->rpa.
5751                  */
5752                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5753                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5754                         bacpy(&conn->init_addr, local_rpa);
5755                 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5756                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5757                         bacpy(&conn->init_addr, &conn->hdev->rpa);
5758                 } else {
5759                         hci_copy_identity_address(conn->hdev, &conn->init_addr,
5760                                                   &conn->init_addr_type);
5761                 }
5762         } else {
5763                 conn->resp_addr_type = conn->hdev->adv_addr_type;
5764                 /* Check if the controller has set a Local RPA then it must be
5765                  * used instead or hdev->rpa.
5766                  */
5767                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5768                         conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5769                         bacpy(&conn->resp_addr, local_rpa);
5770                 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5771                         /* In case of ext adv, resp_addr will be updated in
5772                          * Adv Terminated event.
5773                          */
5774                         if (!ext_adv_capable(conn->hdev))
5775                                 bacpy(&conn->resp_addr,
5776                                       &conn->hdev->random_addr);
5777                 } else {
5778                         bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5779                 }
5780
5781                 conn->init_addr_type = bdaddr_type;
5782                 bacpy(&conn->init_addr, bdaddr);
5783
5784                 /* For incoming connections, set the default minimum
5785                  * and maximum connection interval. They will be used
5786                  * to check if the parameters are in range and if not
5787                  * trigger the connection update procedure.
5788                  */
5789                 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5790                 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5791         }
5792 }
5793
5794 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5795                                  bdaddr_t *bdaddr, u8 bdaddr_type,
5796                                  bdaddr_t *local_rpa, u8 role, u16 handle,
5797                                  u16 interval, u16 latency,
5798                                  u16 supervision_timeout)
5799 {
5800         struct hci_conn_params *params;
5801         struct hci_conn *conn;
5802         struct smp_irk *irk;
5803         u8 addr_type;
5804
5805         hci_dev_lock(hdev);
5806
5807         /* All controllers implicitly stop advertising in the event of a
5808          * connection, so ensure that the state bit is cleared.
5809          */
5810         hci_dev_clear_flag(hdev, HCI_LE_ADV);
5811
5812         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
5813         if (!conn) {
5814                 /* In case of error status and there is no connection pending
5815                  * just unlock as there is nothing to cleanup.
5816                  */
5817                 if (status)
5818                         goto unlock;
5819
5820                 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role);
5821                 if (!conn) {
5822                         bt_dev_err(hdev, "no memory for new connection");
5823                         goto unlock;
5824                 }
5825
5826                 conn->dst_type = bdaddr_type;
5827
5828                 /* If we didn't have a hci_conn object previously
5829                  * but we're in central role this must be something
5830                  * initiated using an accept list. Since accept list based
5831                  * connections are not "first class citizens" we don't
5832                  * have full tracking of them. Therefore, we go ahead
5833                  * with a "best effort" approach of determining the
5834                  * initiator address based on the HCI_PRIVACY flag.
5835                  */
5836                 if (conn->out) {
5837                         conn->resp_addr_type = bdaddr_type;
5838                         bacpy(&conn->resp_addr, bdaddr);
5839                         if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5840                                 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5841                                 bacpy(&conn->init_addr, &hdev->rpa);
5842                         } else {
5843                                 hci_copy_identity_address(hdev,
5844                                                           &conn->init_addr,
5845                                                           &conn->init_addr_type);
5846                         }
5847                 }
5848         } else {
5849                 cancel_delayed_work(&conn->le_conn_timeout);
5850         }
5851
5852         /* The HCI_LE_Connection_Complete event is only sent once per connection.
5853          * Processing it more than once per connection can corrupt kernel memory.
5854          *
5855          * As the connection handle is set here for the first time, it indicates
5856          * whether the connection is already set up.
5857          */
5858         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
5859                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
5860                 goto unlock;
5861         }
5862
5863         le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
5864
5865         /* Lookup the identity address from the stored connection
5866          * address and address type.
5867          *
5868          * When establishing connections to an identity address, the
5869          * connection procedure will store the resolvable random
5870          * address first. Now if it can be converted back into the
5871          * identity address, start using the identity address from
5872          * now on.
5873          */
5874         irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
5875         if (irk) {
5876                 bacpy(&conn->dst, &irk->bdaddr);
5877                 conn->dst_type = irk->addr_type;
5878         }
5879
5880         conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
5881
5882         if (handle > HCI_CONN_HANDLE_MAX) {
5883                 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle,
5884                            HCI_CONN_HANDLE_MAX);
5885                 status = HCI_ERROR_INVALID_PARAMETERS;
5886         }
5887
5888         /* All connection failure handling is taken care of by the
5889          * hci_conn_failed function which is triggered by the HCI
5890          * request completion callbacks used for connecting.
5891          */
5892         if (status)
5893                 goto unlock;
5894
5895         if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
5896                 addr_type = BDADDR_LE_PUBLIC;
5897         else
5898                 addr_type = BDADDR_LE_RANDOM;
5899
5900         /* Drop the connection if the device is blocked */
5901         if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
5902                 hci_conn_drop(conn);
5903                 goto unlock;
5904         }
5905
5906         if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5907                 mgmt_device_connected(hdev, conn, NULL, 0);
5908
5909         conn->sec_level = BT_SECURITY_LOW;
5910         conn->handle = handle;
5911         conn->state = BT_CONFIG;
5912
5913         /* Store current advertising instance as connection advertising instance
5914          * when sotfware rotation is in use so it can be re-enabled when
5915          * disconnected.
5916          */
5917         if (!ext_adv_capable(hdev))
5918                 conn->adv_instance = hdev->cur_adv_instance;
5919
5920         conn->le_conn_interval = interval;
5921         conn->le_conn_latency = latency;
5922         conn->le_supv_timeout = supervision_timeout;
5923
5924         hci_debugfs_create_conn(conn);
5925         hci_conn_add_sysfs(conn);
5926
5927         /* The remote features procedure is defined for central
5928          * role only. So only in case of an initiated connection
5929          * request the remote features.
5930          *
5931          * If the local controller supports peripheral-initiated features
5932          * exchange, then requesting the remote features in peripheral
5933          * role is possible. Otherwise just transition into the
5934          * connected state without requesting the remote features.
5935          */
5936         if (conn->out ||
5937             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
5938                 struct hci_cp_le_read_remote_features cp;
5939
5940                 cp.handle = __cpu_to_le16(conn->handle);
5941
5942                 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
5943                              sizeof(cp), &cp);
5944
5945                 hci_conn_hold(conn);
5946         } else {
5947                 conn->state = BT_CONNECTED;
5948                 hci_connect_cfm(conn, status);
5949         }
5950
5951         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
5952                                            conn->dst_type);
5953         if (params) {
5954                 list_del_init(&params->action);
5955                 if (params->conn) {
5956                         hci_conn_drop(params->conn);
5957                         hci_conn_put(params->conn);
5958                         params->conn = NULL;
5959                 }
5960         }
5961
5962 unlock:
5963         hci_update_passive_scan(hdev);
5964         hci_dev_unlock(hdev);
5965 }
5966
5967 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
5968                                      struct sk_buff *skb)
5969 {
5970         struct hci_ev_le_conn_complete *ev = data;
5971
5972         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5973
5974         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
5975                              NULL, ev->role, le16_to_cpu(ev->handle),
5976                              le16_to_cpu(ev->interval),
5977                              le16_to_cpu(ev->latency),
5978                              le16_to_cpu(ev->supervision_timeout));
5979 }
5980
5981 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
5982                                          struct sk_buff *skb)
5983 {
5984         struct hci_ev_le_enh_conn_complete *ev = data;
5985
5986         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5987
5988         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
5989                              &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
5990                              le16_to_cpu(ev->interval),
5991                              le16_to_cpu(ev->latency),
5992                              le16_to_cpu(ev->supervision_timeout));
5993 }
5994
5995 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
5996                                     struct sk_buff *skb)
5997 {
5998         struct hci_evt_le_ext_adv_set_term *ev = data;
5999         struct hci_conn *conn;
6000         struct adv_info *adv, *n;
6001
6002         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6003
6004         /* The Bluetooth Core 5.3 specification clearly states that this event
6005          * shall not be sent when the Host disables the advertising set. So in
6006          * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6007          *
6008          * When the Host disables an advertising set, all cleanup is done via
6009          * its command callback and not needed to be duplicated here.
6010          */
6011         if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6012                 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6013                 return;
6014         }
6015
6016         hci_dev_lock(hdev);
6017
6018         adv = hci_find_adv_instance(hdev, ev->handle);
6019
6020         if (ev->status) {
6021                 if (!adv)
6022                         goto unlock;
6023
6024                 /* Remove advertising as it has been terminated */
6025                 hci_remove_adv_instance(hdev, ev->handle);
6026                 mgmt_advertising_removed(NULL, hdev, ev->handle);
6027
6028                 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6029                         if (adv->enabled)
6030                                 goto unlock;
6031                 }
6032
6033                 /* We are no longer advertising, clear HCI_LE_ADV */
6034                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6035                 goto unlock;
6036         }
6037
6038         if (adv)
6039                 adv->enabled = false;
6040
6041         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6042         if (conn) {
6043                 /* Store handle in the connection so the correct advertising
6044                  * instance can be re-enabled when disconnected.
6045                  */
6046                 conn->adv_instance = ev->handle;
6047
6048                 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6049                     bacmp(&conn->resp_addr, BDADDR_ANY))
6050                         goto unlock;
6051
6052                 if (!ev->handle) {
6053                         bacpy(&conn->resp_addr, &hdev->random_addr);
6054                         goto unlock;
6055                 }
6056
6057                 if (adv)
6058                         bacpy(&conn->resp_addr, &adv->random_addr);
6059         }
6060
6061 unlock:
6062         hci_dev_unlock(hdev);
6063 }
6064
6065 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6066                                             struct sk_buff *skb)
6067 {
6068         struct hci_ev_le_conn_update_complete *ev = data;
6069         struct hci_conn *conn;
6070
6071         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6072
6073         if (ev->status)
6074                 return;
6075
6076         hci_dev_lock(hdev);
6077
6078         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6079         if (conn) {
6080                 conn->le_conn_interval = le16_to_cpu(ev->interval);
6081                 conn->le_conn_latency = le16_to_cpu(ev->latency);
6082                 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6083         }
6084
6085         hci_dev_unlock(hdev);
6086 }
6087
6088 /* This function requires the caller holds hdev->lock */
6089 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6090                                               bdaddr_t *addr,
6091                                               u8 addr_type, bool addr_resolved,
6092                                               u8 adv_type)
6093 {
6094         struct hci_conn *conn;
6095         struct hci_conn_params *params;
6096
6097         /* If the event is not connectable don't proceed further */
6098         if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6099                 return NULL;
6100
6101         /* Ignore if the device is blocked or hdev is suspended */
6102         if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6103             hdev->suspended)
6104                 return NULL;
6105
6106         /* Most controller will fail if we try to create new connections
6107          * while we have an existing one in peripheral role.
6108          */
6109         if (hdev->conn_hash.le_num_peripheral > 0 &&
6110             (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6111              !(hdev->le_states[3] & 0x10)))
6112                 return NULL;
6113
6114         /* If we're not connectable only connect devices that we have in
6115          * our pend_le_conns list.
6116          */
6117         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6118                                            addr_type);
6119         if (!params)
6120                 return NULL;
6121
6122         if (!params->explicit_connect) {
6123                 switch (params->auto_connect) {
6124                 case HCI_AUTO_CONN_DIRECT:
6125                         /* Only devices advertising with ADV_DIRECT_IND are
6126                          * triggering a connection attempt. This is allowing
6127                          * incoming connections from peripheral devices.
6128                          */
6129                         if (adv_type != LE_ADV_DIRECT_IND)
6130                                 return NULL;
6131                         break;
6132                 case HCI_AUTO_CONN_ALWAYS:
6133                         /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6134                          * are triggering a connection attempt. This means
6135                          * that incoming connections from peripheral device are
6136                          * accepted and also outgoing connections to peripheral
6137                          * devices are established when found.
6138                          */
6139                         break;
6140                 default:
6141                         return NULL;
6142                 }
6143         }
6144
6145         conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6146                               BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6147                               HCI_ROLE_MASTER);
6148         if (!IS_ERR(conn)) {
6149                 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6150                  * by higher layer that tried to connect, if no then
6151                  * store the pointer since we don't really have any
6152                  * other owner of the object besides the params that
6153                  * triggered it. This way we can abort the connection if
6154                  * the parameters get removed and keep the reference
6155                  * count consistent once the connection is established.
6156                  */
6157
6158                 if (!params->explicit_connect)
6159                         params->conn = hci_conn_get(conn);
6160
6161                 return conn;
6162         }
6163
6164         switch (PTR_ERR(conn)) {
6165         case -EBUSY:
6166                 /* If hci_connect() returns -EBUSY it means there is already
6167                  * an LE connection attempt going on. Since controllers don't
6168                  * support more than one connection attempt at the time, we
6169                  * don't consider this an error case.
6170                  */
6171                 break;
6172         default:
6173                 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6174                 return NULL;
6175         }
6176
6177         return NULL;
6178 }
6179
6180 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6181                                u8 bdaddr_type, bdaddr_t *direct_addr,
6182                                u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6183                                bool ext_adv, bool ctl_time, u64 instant)
6184 {
6185         struct discovery_state *d = &hdev->discovery;
6186         struct smp_irk *irk;
6187         struct hci_conn *conn;
6188         bool match, bdaddr_resolved;
6189         u32 flags;
6190         u8 *ptr;
6191
6192         switch (type) {
6193         case LE_ADV_IND:
6194         case LE_ADV_DIRECT_IND:
6195         case LE_ADV_SCAN_IND:
6196         case LE_ADV_NONCONN_IND:
6197         case LE_ADV_SCAN_RSP:
6198                 break;
6199         default:
6200                 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6201                                        "type: 0x%02x", type);
6202                 return;
6203         }
6204
6205         if (!ext_adv && len > HCI_MAX_AD_LENGTH) {
6206                 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes");
6207                 return;
6208         }
6209
6210         /* Find the end of the data in case the report contains padded zero
6211          * bytes at the end causing an invalid length value.
6212          *
6213          * When data is NULL, len is 0 so there is no need for extra ptr
6214          * check as 'ptr < data + 0' is already false in such case.
6215          */
6216         for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6217                 if (ptr + 1 + *ptr > data + len)
6218                         break;
6219         }
6220
6221         /* Adjust for actual length. This handles the case when remote
6222          * device is advertising with incorrect data length.
6223          */
6224         len = ptr - data;
6225
6226         /* If the direct address is present, then this report is from
6227          * a LE Direct Advertising Report event. In that case it is
6228          * important to see if the address is matching the local
6229          * controller address.
6230          */
6231         if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6232                 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6233                                                   &bdaddr_resolved);
6234
6235                 /* Only resolvable random addresses are valid for these
6236                  * kind of reports and others can be ignored.
6237                  */
6238                 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6239                         return;
6240
6241                 /* If the controller is not using resolvable random
6242                  * addresses, then this report can be ignored.
6243                  */
6244                 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6245                         return;
6246
6247                 /* If the local IRK of the controller does not match
6248                  * with the resolvable random address provided, then
6249                  * this report can be ignored.
6250                  */
6251                 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6252                         return;
6253         }
6254
6255         /* Check if we need to convert to identity address */
6256         irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6257         if (irk) {
6258                 bdaddr = &irk->bdaddr;
6259                 bdaddr_type = irk->addr_type;
6260         }
6261
6262         bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6263
6264         /* Check if we have been requested to connect to this device.
6265          *
6266          * direct_addr is set only for directed advertising reports (it is NULL
6267          * for advertising reports) and is already verified to be RPA above.
6268          */
6269         conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6270                                      type);
6271         if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) {
6272                 /* Store report for later inclusion by
6273                  * mgmt_device_connected
6274                  */
6275                 memcpy(conn->le_adv_data, data, len);
6276                 conn->le_adv_data_len = len;
6277         }
6278
6279         if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6280                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6281         else
6282                 flags = 0;
6283
6284         /* All scan results should be sent up for Mesh systems */
6285         if (hci_dev_test_flag(hdev, HCI_MESH)) {
6286                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6287                                   rssi, flags, data, len, NULL, 0, instant);
6288                 return;
6289         }
6290
6291         /* Passive scanning shouldn't trigger any device found events,
6292          * except for devices marked as CONN_REPORT for which we do send
6293          * device found events, or advertisement monitoring requested.
6294          */
6295         if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6296                 if (type == LE_ADV_DIRECT_IND)
6297                         return;
6298
6299                 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6300                                                bdaddr, bdaddr_type) &&
6301                     idr_is_empty(&hdev->adv_monitors_idr))
6302                         return;
6303
6304                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6305                                   rssi, flags, data, len, NULL, 0, 0);
6306                 return;
6307         }
6308
6309         /* When receiving non-connectable or scannable undirected
6310          * advertising reports, this means that the remote device is
6311          * not connectable and then clearly indicate this in the
6312          * device found event.
6313          *
6314          * When receiving a scan response, then there is no way to
6315          * know if the remote device is connectable or not. However
6316          * since scan responses are merged with a previously seen
6317          * advertising report, the flags field from that report
6318          * will be used.
6319          *
6320          * In the really unlikely case that a controller get confused
6321          * and just sends a scan response event, then it is marked as
6322          * not connectable as well.
6323          */
6324         if (type == LE_ADV_SCAN_RSP)
6325                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6326
6327         /* If there's nothing pending either store the data from this
6328          * event or send an immediate device found event if the data
6329          * should not be stored for later.
6330          */
6331         if (!ext_adv && !has_pending_adv_report(hdev)) {
6332                 /* If the report will trigger a SCAN_REQ store it for
6333                  * later merging.
6334                  */
6335                 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6336                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6337                                                  rssi, flags, data, len);
6338                         return;
6339                 }
6340
6341                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6342                                   rssi, flags, data, len, NULL, 0, 0);
6343                 return;
6344         }
6345
6346         /* Check if the pending report is for the same device as the new one */
6347         match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6348                  bdaddr_type == d->last_adv_addr_type);
6349
6350         /* If the pending data doesn't match this report or this isn't a
6351          * scan response (e.g. we got a duplicate ADV_IND) then force
6352          * sending of the pending data.
6353          */
6354         if (type != LE_ADV_SCAN_RSP || !match) {
6355                 /* Send out whatever is in the cache, but skip duplicates */
6356                 if (!match)
6357                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6358                                           d->last_adv_addr_type, NULL,
6359                                           d->last_adv_rssi, d->last_adv_flags,
6360                                           d->last_adv_data,
6361                                           d->last_adv_data_len, NULL, 0, 0);
6362
6363                 /* If the new report will trigger a SCAN_REQ store it for
6364                  * later merging.
6365                  */
6366                 if (!ext_adv && (type == LE_ADV_IND ||
6367                                  type == LE_ADV_SCAN_IND)) {
6368                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6369                                                  rssi, flags, data, len);
6370                         return;
6371                 }
6372
6373                 /* The advertising reports cannot be merged, so clear
6374                  * the pending report and send out a device found event.
6375                  */
6376                 clear_pending_adv_report(hdev);
6377                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6378                                   rssi, flags, data, len, NULL, 0, 0);
6379                 return;
6380         }
6381
6382         /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6383          * the new event is a SCAN_RSP. We can therefore proceed with
6384          * sending a merged device found event.
6385          */
6386         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6387                           d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6388                           d->last_adv_data, d->last_adv_data_len, data, len, 0);
6389         clear_pending_adv_report(hdev);
6390 }
6391
6392 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6393                                   struct sk_buff *skb)
6394 {
6395         struct hci_ev_le_advertising_report *ev = data;
6396         u64 instant = jiffies;
6397
6398         if (!ev->num)
6399                 return;
6400
6401         hci_dev_lock(hdev);
6402
6403         while (ev->num--) {
6404                 struct hci_ev_le_advertising_info *info;
6405                 s8 rssi;
6406
6407                 info = hci_le_ev_skb_pull(hdev, skb,
6408                                           HCI_EV_LE_ADVERTISING_REPORT,
6409                                           sizeof(*info));
6410                 if (!info)
6411                         break;
6412
6413                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6414                                         info->length + 1))
6415                         break;
6416
6417                 if (info->length <= HCI_MAX_AD_LENGTH) {
6418                         rssi = info->data[info->length];
6419                         process_adv_report(hdev, info->type, &info->bdaddr,
6420                                            info->bdaddr_type, NULL, 0, rssi,
6421                                            info->data, info->length, false,
6422                                            false, instant);
6423                 } else {
6424                         bt_dev_err(hdev, "Dropping invalid advertising data");
6425                 }
6426         }
6427
6428         hci_dev_unlock(hdev);
6429 }
6430
6431 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6432 {
6433         if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6434                 switch (evt_type) {
6435                 case LE_LEGACY_ADV_IND:
6436                         return LE_ADV_IND;
6437                 case LE_LEGACY_ADV_DIRECT_IND:
6438                         return LE_ADV_DIRECT_IND;
6439                 case LE_LEGACY_ADV_SCAN_IND:
6440                         return LE_ADV_SCAN_IND;
6441                 case LE_LEGACY_NONCONN_IND:
6442                         return LE_ADV_NONCONN_IND;
6443                 case LE_LEGACY_SCAN_RSP_ADV:
6444                 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6445                         return LE_ADV_SCAN_RSP;
6446                 }
6447
6448                 goto invalid;
6449         }
6450
6451         if (evt_type & LE_EXT_ADV_CONN_IND) {
6452                 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6453                         return LE_ADV_DIRECT_IND;
6454
6455                 return LE_ADV_IND;
6456         }
6457
6458         if (evt_type & LE_EXT_ADV_SCAN_RSP)
6459                 return LE_ADV_SCAN_RSP;
6460
6461         if (evt_type & LE_EXT_ADV_SCAN_IND)
6462                 return LE_ADV_SCAN_IND;
6463
6464         if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6465             evt_type & LE_EXT_ADV_DIRECT_IND)
6466                 return LE_ADV_NONCONN_IND;
6467
6468 invalid:
6469         bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6470                                evt_type);
6471
6472         return LE_ADV_INVALID;
6473 }
6474
6475 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6476                                       struct sk_buff *skb)
6477 {
6478         struct hci_ev_le_ext_adv_report *ev = data;
6479         u64 instant = jiffies;
6480
6481         if (!ev->num)
6482                 return;
6483
6484         hci_dev_lock(hdev);
6485
6486         while (ev->num--) {
6487                 struct hci_ev_le_ext_adv_info *info;
6488                 u8 legacy_evt_type;
6489                 u16 evt_type;
6490
6491                 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6492                                           sizeof(*info));
6493                 if (!info)
6494                         break;
6495
6496                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6497                                         info->length))
6498                         break;
6499
6500                 evt_type = __le16_to_cpu(info->type);
6501                 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6502                 if (legacy_evt_type != LE_ADV_INVALID) {
6503                         process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6504                                            info->bdaddr_type, NULL, 0,
6505                                            info->rssi, info->data, info->length,
6506                                            !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6507                                            false, instant);
6508                 }
6509         }
6510
6511         hci_dev_unlock(hdev);
6512 }
6513
6514 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6515 {
6516         struct hci_cp_le_pa_term_sync cp;
6517
6518         memset(&cp, 0, sizeof(cp));
6519         cp.handle = handle;
6520
6521         return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6522 }
6523
6524 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6525                                             struct sk_buff *skb)
6526 {
6527         struct hci_ev_le_pa_sync_established *ev = data;
6528         int mask = hdev->link_mode;
6529         __u8 flags = 0;
6530
6531         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6532
6533         if (ev->status)
6534                 return;
6535
6536         hci_dev_lock(hdev);
6537
6538         hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6539
6540         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6541         if (!(mask & HCI_LM_ACCEPT))
6542                 hci_le_pa_term_sync(hdev, ev->handle);
6543
6544         hci_dev_unlock(hdev);
6545 }
6546
6547 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6548                                             struct sk_buff *skb)
6549 {
6550         struct hci_ev_le_remote_feat_complete *ev = data;
6551         struct hci_conn *conn;
6552
6553         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6554
6555         hci_dev_lock(hdev);
6556
6557         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6558         if (conn) {
6559                 if (!ev->status)
6560                         memcpy(conn->features[0], ev->features, 8);
6561
6562                 if (conn->state == BT_CONFIG) {
6563                         __u8 status;
6564
6565                         /* If the local controller supports peripheral-initiated
6566                          * features exchange, but the remote controller does
6567                          * not, then it is possible that the error code 0x1a
6568                          * for unsupported remote feature gets returned.
6569                          *
6570                          * In this specific case, allow the connection to
6571                          * transition into connected state and mark it as
6572                          * successful.
6573                          */
6574                         if (!conn->out && ev->status == 0x1a &&
6575                             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6576                                 status = 0x00;
6577                         else
6578                                 status = ev->status;
6579
6580                         conn->state = BT_CONNECTED;
6581                         hci_connect_cfm(conn, status);
6582                         hci_conn_drop(conn);
6583                 }
6584         }
6585
6586         hci_dev_unlock(hdev);
6587 }
6588
6589 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6590                                    struct sk_buff *skb)
6591 {
6592         struct hci_ev_le_ltk_req *ev = data;
6593         struct hci_cp_le_ltk_reply cp;
6594         struct hci_cp_le_ltk_neg_reply neg;
6595         struct hci_conn *conn;
6596         struct smp_ltk *ltk;
6597
6598         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6599
6600         hci_dev_lock(hdev);
6601
6602         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6603         if (conn == NULL)
6604                 goto not_found;
6605
6606         ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6607         if (!ltk)
6608                 goto not_found;
6609
6610         if (smp_ltk_is_sc(ltk)) {
6611                 /* With SC both EDiv and Rand are set to zero */
6612                 if (ev->ediv || ev->rand)
6613                         goto not_found;
6614         } else {
6615                 /* For non-SC keys check that EDiv and Rand match */
6616                 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6617                         goto not_found;
6618         }
6619
6620         memcpy(cp.ltk, ltk->val, ltk->enc_size);
6621         memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6622         cp.handle = cpu_to_le16(conn->handle);
6623
6624         conn->pending_sec_level = smp_ltk_sec_level(ltk);
6625
6626         conn->enc_key_size = ltk->enc_size;
6627
6628         hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6629
6630         /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6631          * temporary key used to encrypt a connection following
6632          * pairing. It is used during the Encrypted Session Setup to
6633          * distribute the keys. Later, security can be re-established
6634          * using a distributed LTK.
6635          */
6636         if (ltk->type == SMP_STK) {
6637                 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6638                 list_del_rcu(&ltk->list);
6639                 kfree_rcu(ltk, rcu);
6640         } else {
6641                 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6642         }
6643
6644         hci_dev_unlock(hdev);
6645
6646         return;
6647
6648 not_found:
6649         neg.handle = ev->handle;
6650         hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6651         hci_dev_unlock(hdev);
6652 }
6653
6654 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6655                                       u8 reason)
6656 {
6657         struct hci_cp_le_conn_param_req_neg_reply cp;
6658
6659         cp.handle = cpu_to_le16(handle);
6660         cp.reason = reason;
6661
6662         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6663                      &cp);
6664 }
6665
6666 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6667                                              struct sk_buff *skb)
6668 {
6669         struct hci_ev_le_remote_conn_param_req *ev = data;
6670         struct hci_cp_le_conn_param_req_reply cp;
6671         struct hci_conn *hcon;
6672         u16 handle, min, max, latency, timeout;
6673
6674         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6675
6676         handle = le16_to_cpu(ev->handle);
6677         min = le16_to_cpu(ev->interval_min);
6678         max = le16_to_cpu(ev->interval_max);
6679         latency = le16_to_cpu(ev->latency);
6680         timeout = le16_to_cpu(ev->timeout);
6681
6682         hcon = hci_conn_hash_lookup_handle(hdev, handle);
6683         if (!hcon || hcon->state != BT_CONNECTED)
6684                 return send_conn_param_neg_reply(hdev, handle,
6685                                                  HCI_ERROR_UNKNOWN_CONN_ID);
6686
6687         if (hci_check_conn_params(min, max, latency, timeout))
6688                 return send_conn_param_neg_reply(hdev, handle,
6689                                                  HCI_ERROR_INVALID_LL_PARAMS);
6690
6691         if (hcon->role == HCI_ROLE_MASTER) {
6692                 struct hci_conn_params *params;
6693                 u8 store_hint;
6694
6695                 hci_dev_lock(hdev);
6696
6697                 params = hci_conn_params_lookup(hdev, &hcon->dst,
6698                                                 hcon->dst_type);
6699                 if (params) {
6700                         params->conn_min_interval = min;
6701                         params->conn_max_interval = max;
6702                         params->conn_latency = latency;
6703                         params->supervision_timeout = timeout;
6704                         store_hint = 0x01;
6705                 } else {
6706                         store_hint = 0x00;
6707                 }
6708
6709                 hci_dev_unlock(hdev);
6710
6711                 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6712                                     store_hint, min, max, latency, timeout);
6713         }
6714
6715         cp.handle = ev->handle;
6716         cp.interval_min = ev->interval_min;
6717         cp.interval_max = ev->interval_max;
6718         cp.latency = ev->latency;
6719         cp.timeout = ev->timeout;
6720         cp.min_ce_len = 0;
6721         cp.max_ce_len = 0;
6722
6723         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6724 }
6725
6726 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6727                                          struct sk_buff *skb)
6728 {
6729         struct hci_ev_le_direct_adv_report *ev = data;
6730         u64 instant = jiffies;
6731         int i;
6732
6733         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6734                                 flex_array_size(ev, info, ev->num)))
6735                 return;
6736
6737         if (!ev->num)
6738                 return;
6739
6740         hci_dev_lock(hdev);
6741
6742         for (i = 0; i < ev->num; i++) {
6743                 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6744
6745                 process_adv_report(hdev, info->type, &info->bdaddr,
6746                                    info->bdaddr_type, &info->direct_addr,
6747                                    info->direct_addr_type, info->rssi, NULL, 0,
6748                                    false, false, instant);
6749         }
6750
6751         hci_dev_unlock(hdev);
6752 }
6753
6754 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6755                                   struct sk_buff *skb)
6756 {
6757         struct hci_ev_le_phy_update_complete *ev = data;
6758         struct hci_conn *conn;
6759
6760         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6761
6762         if (ev->status)
6763                 return;
6764
6765         hci_dev_lock(hdev);
6766
6767         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6768         if (!conn)
6769                 goto unlock;
6770
6771         conn->le_tx_phy = ev->tx_phy;
6772         conn->le_rx_phy = ev->rx_phy;
6773
6774 unlock:
6775         hci_dev_unlock(hdev);
6776 }
6777
6778 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
6779                                         struct sk_buff *skb)
6780 {
6781         struct hci_evt_le_cis_established *ev = data;
6782         struct hci_conn *conn;
6783         u16 handle = __le16_to_cpu(ev->handle);
6784
6785         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6786
6787         hci_dev_lock(hdev);
6788
6789         conn = hci_conn_hash_lookup_handle(hdev, handle);
6790         if (!conn) {
6791                 bt_dev_err(hdev,
6792                            "Unable to find connection with handle 0x%4.4x",
6793                            handle);
6794                 goto unlock;
6795         }
6796
6797         if (conn->type != ISO_LINK) {
6798                 bt_dev_err(hdev,
6799                            "Invalid connection link type handle 0x%4.4x",
6800                            handle);
6801                 goto unlock;
6802         }
6803
6804         if (conn->role == HCI_ROLE_SLAVE) {
6805                 __le32 interval;
6806
6807                 memset(&interval, 0, sizeof(interval));
6808
6809                 memcpy(&interval, ev->c_latency, sizeof(ev->c_latency));
6810                 conn->iso_qos.in.interval = le32_to_cpu(interval);
6811                 memcpy(&interval, ev->p_latency, sizeof(ev->p_latency));
6812                 conn->iso_qos.out.interval = le32_to_cpu(interval);
6813                 conn->iso_qos.in.latency = le16_to_cpu(ev->interval);
6814                 conn->iso_qos.out.latency = le16_to_cpu(ev->interval);
6815                 conn->iso_qos.in.sdu = le16_to_cpu(ev->c_mtu);
6816                 conn->iso_qos.out.sdu = le16_to_cpu(ev->p_mtu);
6817                 conn->iso_qos.in.phy = ev->c_phy;
6818                 conn->iso_qos.out.phy = ev->p_phy;
6819         }
6820
6821         if (!ev->status) {
6822                 conn->state = BT_CONNECTED;
6823                 hci_debugfs_create_conn(conn);
6824                 hci_conn_add_sysfs(conn);
6825                 hci_iso_setup_path(conn);
6826                 goto unlock;
6827         }
6828
6829         hci_connect_cfm(conn, ev->status);
6830         hci_conn_del(conn);
6831
6832 unlock:
6833         hci_dev_unlock(hdev);
6834 }
6835
6836 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
6837 {
6838         struct hci_cp_le_reject_cis cp;
6839
6840         memset(&cp, 0, sizeof(cp));
6841         cp.handle = handle;
6842         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
6843         hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
6844 }
6845
6846 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
6847 {
6848         struct hci_cp_le_accept_cis cp;
6849
6850         memset(&cp, 0, sizeof(cp));
6851         cp.handle = handle;
6852         hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
6853 }
6854
6855 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
6856                                struct sk_buff *skb)
6857 {
6858         struct hci_evt_le_cis_req *ev = data;
6859         u16 acl_handle, cis_handle;
6860         struct hci_conn *acl, *cis;
6861         int mask;
6862         __u8 flags = 0;
6863
6864         acl_handle = __le16_to_cpu(ev->acl_handle);
6865         cis_handle = __le16_to_cpu(ev->cis_handle);
6866
6867         bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
6868                    acl_handle, cis_handle, ev->cig_id, ev->cis_id);
6869
6870         hci_dev_lock(hdev);
6871
6872         acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
6873         if (!acl)
6874                 goto unlock;
6875
6876         mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
6877         if (!(mask & HCI_LM_ACCEPT)) {
6878                 hci_le_reject_cis(hdev, ev->cis_handle);
6879                 goto unlock;
6880         }
6881
6882         cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
6883         if (!cis) {
6884                 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE);
6885                 if (!cis) {
6886                         hci_le_reject_cis(hdev, ev->cis_handle);
6887                         goto unlock;
6888                 }
6889                 cis->handle = cis_handle;
6890         }
6891
6892         cis->iso_qos.cig = ev->cig_id;
6893         cis->iso_qos.cis = ev->cis_id;
6894
6895         if (!(flags & HCI_PROTO_DEFER)) {
6896                 hci_le_accept_cis(hdev, ev->cis_handle);
6897         } else {
6898                 cis->state = BT_CONNECT2;
6899                 hci_connect_cfm(cis, 0);
6900         }
6901
6902 unlock:
6903         hci_dev_unlock(hdev);
6904 }
6905
6906 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
6907                                            struct sk_buff *skb)
6908 {
6909         struct hci_evt_le_create_big_complete *ev = data;
6910         struct hci_conn *conn;
6911
6912         BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
6913
6914         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
6915                                 flex_array_size(ev, bis_handle, ev->num_bis)))
6916                 return;
6917
6918         hci_dev_lock(hdev);
6919
6920         conn = hci_conn_hash_lookup_big(hdev, ev->handle);
6921         if (!conn)
6922                 goto unlock;
6923
6924         if (conn->type != ISO_LINK) {
6925                 bt_dev_err(hdev,
6926                            "Invalid connection link type handle 0x%2.2x",
6927                            ev->handle);
6928                 goto unlock;
6929         }
6930
6931         if (ev->num_bis)
6932                 conn->handle = __le16_to_cpu(ev->bis_handle[0]);
6933
6934         if (!ev->status) {
6935                 conn->state = BT_CONNECTED;
6936                 hci_debugfs_create_conn(conn);
6937                 hci_conn_add_sysfs(conn);
6938                 hci_iso_setup_path(conn);
6939                 goto unlock;
6940         }
6941
6942         hci_connect_cfm(conn, ev->status);
6943         hci_conn_del(conn);
6944
6945 unlock:
6946         hci_dev_unlock(hdev);
6947 }
6948
6949 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
6950                                             struct sk_buff *skb)
6951 {
6952         struct hci_evt_le_big_sync_estabilished *ev = data;
6953         struct hci_conn *bis;
6954         int i;
6955
6956         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6957
6958         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
6959                                 flex_array_size(ev, bis, ev->num_bis)))
6960                 return;
6961
6962         if (ev->status)
6963                 return;
6964
6965         hci_dev_lock(hdev);
6966
6967         for (i = 0; i < ev->num_bis; i++) {
6968                 u16 handle = le16_to_cpu(ev->bis[i]);
6969                 __le32 interval;
6970
6971                 bis = hci_conn_hash_lookup_handle(hdev, handle);
6972                 if (!bis) {
6973                         bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
6974                                            HCI_ROLE_SLAVE);
6975                         if (!bis)
6976                                 continue;
6977                         bis->handle = handle;
6978                 }
6979
6980                 bis->iso_qos.big = ev->handle;
6981                 memset(&interval, 0, sizeof(interval));
6982                 memcpy(&interval, ev->latency, sizeof(ev->latency));
6983                 bis->iso_qos.in.interval = le32_to_cpu(interval);
6984                 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
6985                 bis->iso_qos.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
6986                 bis->iso_qos.in.sdu = le16_to_cpu(ev->max_pdu);
6987
6988                 hci_connect_cfm(bis, ev->status);
6989         }
6990
6991         hci_dev_unlock(hdev);
6992 }
6993
6994 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
6995                                            struct sk_buff *skb)
6996 {
6997         struct hci_evt_le_big_info_adv_report *ev = data;
6998         int mask = hdev->link_mode;
6999         __u8 flags = 0;
7000
7001         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7002
7003         hci_dev_lock(hdev);
7004
7005         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7006         if (!(mask & HCI_LM_ACCEPT))
7007                 hci_le_pa_term_sync(hdev, ev->sync_handle);
7008
7009         hci_dev_unlock(hdev);
7010 }
7011
7012 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7013 [_op] = { \
7014         .func = _func, \
7015         .min_len = _min_len, \
7016         .max_len = _max_len, \
7017 }
7018
7019 #define HCI_LE_EV(_op, _func, _len) \
7020         HCI_LE_EV_VL(_op, _func, _len, _len)
7021
7022 #define HCI_LE_EV_STATUS(_op, _func) \
7023         HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7024
7025 /* Entries in this table shall have their position according to the subevent
7026  * opcode they handle so the use of the macros above is recommend since it does
7027  * attempt to initialize at its proper index using Designated Initializers that
7028  * way events without a callback function can be ommited.
7029  */
7030 static const struct hci_le_ev {
7031         void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7032         u16  min_len;
7033         u16  max_len;
7034 } hci_le_ev_table[U8_MAX + 1] = {
7035         /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7036         HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7037                   sizeof(struct hci_ev_le_conn_complete)),
7038         /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7039         HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7040                      sizeof(struct hci_ev_le_advertising_report),
7041                      HCI_MAX_EVENT_SIZE),
7042         /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7043         HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7044                   hci_le_conn_update_complete_evt,
7045                   sizeof(struct hci_ev_le_conn_update_complete)),
7046         /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7047         HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7048                   hci_le_remote_feat_complete_evt,
7049                   sizeof(struct hci_ev_le_remote_feat_complete)),
7050         /* [0x05 = HCI_EV_LE_LTK_REQ] */
7051         HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7052                   sizeof(struct hci_ev_le_ltk_req)),
7053         /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7054         HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7055                   hci_le_remote_conn_param_req_evt,
7056                   sizeof(struct hci_ev_le_remote_conn_param_req)),
7057         /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7058         HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7059                   hci_le_enh_conn_complete_evt,
7060                   sizeof(struct hci_ev_le_enh_conn_complete)),
7061         /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7062         HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7063                      sizeof(struct hci_ev_le_direct_adv_report),
7064                      HCI_MAX_EVENT_SIZE),
7065         /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7066         HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7067                   sizeof(struct hci_ev_le_phy_update_complete)),
7068         /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7069         HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7070                      sizeof(struct hci_ev_le_ext_adv_report),
7071                      HCI_MAX_EVENT_SIZE),
7072         /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7073         HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7074                   hci_le_pa_sync_estabilished_evt,
7075                   sizeof(struct hci_ev_le_pa_sync_established)),
7076         /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7077         HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7078                   sizeof(struct hci_evt_le_ext_adv_set_term)),
7079         /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7080         HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7081                   sizeof(struct hci_evt_le_cis_established)),
7082         /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7083         HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7084                   sizeof(struct hci_evt_le_cis_req)),
7085         /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7086         HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7087                      hci_le_create_big_complete_evt,
7088                      sizeof(struct hci_evt_le_create_big_complete),
7089                      HCI_MAX_EVENT_SIZE),
7090         /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7091         HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7092                      hci_le_big_sync_established_evt,
7093                      sizeof(struct hci_evt_le_big_sync_estabilished),
7094                      HCI_MAX_EVENT_SIZE),
7095         /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7096         HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7097                      hci_le_big_info_adv_report_evt,
7098                      sizeof(struct hci_evt_le_big_info_adv_report),
7099                      HCI_MAX_EVENT_SIZE),
7100 };
7101
7102 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7103                             struct sk_buff *skb, u16 *opcode, u8 *status,
7104                             hci_req_complete_t *req_complete,
7105                             hci_req_complete_skb_t *req_complete_skb)
7106 {
7107         struct hci_ev_le_meta *ev = data;
7108         const struct hci_le_ev *subev;
7109
7110         bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7111
7112         /* Only match event if command OGF is for LE */
7113         if (hdev->sent_cmd &&
7114             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7115             hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7116                 *opcode = hci_skb_opcode(hdev->sent_cmd);
7117                 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7118                                      req_complete_skb);
7119         }
7120
7121         subev = &hci_le_ev_table[ev->subevent];
7122         if (!subev->func)
7123                 return;
7124
7125         if (skb->len < subev->min_len) {
7126                 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7127                            ev->subevent, skb->len, subev->min_len);
7128                 return;
7129         }
7130
7131         /* Just warn if the length is over max_len size it still be
7132          * possible to partially parse the event so leave to callback to
7133          * decide if that is acceptable.
7134          */
7135         if (skb->len > subev->max_len)
7136                 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7137                             ev->subevent, skb->len, subev->max_len);
7138         data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7139         if (!data)
7140                 return;
7141
7142         subev->func(hdev, data, skb);
7143 }
7144
7145 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7146                                  u8 event, struct sk_buff *skb)
7147 {
7148         struct hci_ev_cmd_complete *ev;
7149         struct hci_event_hdr *hdr;
7150
7151         if (!skb)
7152                 return false;
7153
7154         hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7155         if (!hdr)
7156                 return false;
7157
7158         if (event) {
7159                 if (hdr->evt != event)
7160                         return false;
7161                 return true;
7162         }
7163
7164         /* Check if request ended in Command Status - no way to retrieve
7165          * any extra parameters in this case.
7166          */
7167         if (hdr->evt == HCI_EV_CMD_STATUS)
7168                 return false;
7169
7170         if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7171                 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7172                            hdr->evt);
7173                 return false;
7174         }
7175
7176         ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7177         if (!ev)
7178                 return false;
7179
7180         if (opcode != __le16_to_cpu(ev->opcode)) {
7181                 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7182                        __le16_to_cpu(ev->opcode));
7183                 return false;
7184         }
7185
7186         return true;
7187 }
7188
7189 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7190                                   struct sk_buff *skb)
7191 {
7192         struct hci_ev_le_advertising_info *adv;
7193         struct hci_ev_le_direct_adv_info *direct_adv;
7194         struct hci_ev_le_ext_adv_info *ext_adv;
7195         const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7196         const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7197
7198         hci_dev_lock(hdev);
7199
7200         /* If we are currently suspended and this is the first BT event seen,
7201          * save the wake reason associated with the event.
7202          */
7203         if (!hdev->suspended || hdev->wake_reason)
7204                 goto unlock;
7205
7206         /* Default to remote wake. Values for wake_reason are documented in the
7207          * Bluez mgmt api docs.
7208          */
7209         hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7210
7211         /* Once configured for remote wakeup, we should only wake up for
7212          * reconnections. It's useful to see which device is waking us up so
7213          * keep track of the bdaddr of the connection event that woke us up.
7214          */
7215         if (event == HCI_EV_CONN_REQUEST) {
7216                 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7217                 hdev->wake_addr_type = BDADDR_BREDR;
7218         } else if (event == HCI_EV_CONN_COMPLETE) {
7219                 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7220                 hdev->wake_addr_type = BDADDR_BREDR;
7221         } else if (event == HCI_EV_LE_META) {
7222                 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7223                 u8 subevent = le_ev->subevent;
7224                 u8 *ptr = &skb->data[sizeof(*le_ev)];
7225                 u8 num_reports = *ptr;
7226
7227                 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7228                      subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7229                      subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7230                     num_reports) {
7231                         adv = (void *)(ptr + 1);
7232                         direct_adv = (void *)(ptr + 1);
7233                         ext_adv = (void *)(ptr + 1);
7234
7235                         switch (subevent) {
7236                         case HCI_EV_LE_ADVERTISING_REPORT:
7237                                 bacpy(&hdev->wake_addr, &adv->bdaddr);
7238                                 hdev->wake_addr_type = adv->bdaddr_type;
7239                                 break;
7240                         case HCI_EV_LE_DIRECT_ADV_REPORT:
7241                                 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7242                                 hdev->wake_addr_type = direct_adv->bdaddr_type;
7243                                 break;
7244                         case HCI_EV_LE_EXT_ADV_REPORT:
7245                                 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7246                                 hdev->wake_addr_type = ext_adv->bdaddr_type;
7247                                 break;
7248                         }
7249                 }
7250         } else {
7251                 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7252         }
7253
7254 unlock:
7255         hci_dev_unlock(hdev);
7256 }
7257
7258 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7259 [_op] = { \
7260         .req = false, \
7261         .func = _func, \
7262         .min_len = _min_len, \
7263         .max_len = _max_len, \
7264 }
7265
7266 #define HCI_EV(_op, _func, _len) \
7267         HCI_EV_VL(_op, _func, _len, _len)
7268
7269 #define HCI_EV_STATUS(_op, _func) \
7270         HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7271
7272 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7273 [_op] = { \
7274         .req = true, \
7275         .func_req = _func, \
7276         .min_len = _min_len, \
7277         .max_len = _max_len, \
7278 }
7279
7280 #define HCI_EV_REQ(_op, _func, _len) \
7281         HCI_EV_REQ_VL(_op, _func, _len, _len)
7282
7283 /* Entries in this table shall have their position according to the event opcode
7284  * they handle so the use of the macros above is recommend since it does attempt
7285  * to initialize at its proper index using Designated Initializers that way
7286  * events without a callback function don't have entered.
7287  */
7288 static const struct hci_ev {
7289         bool req;
7290         union {
7291                 void (*func)(struct hci_dev *hdev, void *data,
7292                              struct sk_buff *skb);
7293                 void (*func_req)(struct hci_dev *hdev, void *data,
7294                                  struct sk_buff *skb, u16 *opcode, u8 *status,
7295                                  hci_req_complete_t *req_complete,
7296                                  hci_req_complete_skb_t *req_complete_skb);
7297         };
7298         u16  min_len;
7299         u16  max_len;
7300 } hci_ev_table[U8_MAX + 1] = {
7301         /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7302         HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7303         /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7304         HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7305                   sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7306         /* [0x03 = HCI_EV_CONN_COMPLETE] */
7307         HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7308                sizeof(struct hci_ev_conn_complete)),
7309         /* [0x04 = HCI_EV_CONN_REQUEST] */
7310         HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7311                sizeof(struct hci_ev_conn_request)),
7312         /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7313         HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7314                sizeof(struct hci_ev_disconn_complete)),
7315         /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7316         HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7317                sizeof(struct hci_ev_auth_complete)),
7318         /* [0x07 = HCI_EV_REMOTE_NAME] */
7319         HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7320                sizeof(struct hci_ev_remote_name)),
7321         /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7322         HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7323                sizeof(struct hci_ev_encrypt_change)),
7324         /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7325         HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7326                hci_change_link_key_complete_evt,
7327                sizeof(struct hci_ev_change_link_key_complete)),
7328         /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7329         HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7330                sizeof(struct hci_ev_remote_features)),
7331         /* [0x0e = HCI_EV_CMD_COMPLETE] */
7332         HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7333                       sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7334         /* [0x0f = HCI_EV_CMD_STATUS] */
7335         HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7336                    sizeof(struct hci_ev_cmd_status)),
7337         /* [0x10 = HCI_EV_CMD_STATUS] */
7338         HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7339                sizeof(struct hci_ev_hardware_error)),
7340         /* [0x12 = HCI_EV_ROLE_CHANGE] */
7341         HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7342                sizeof(struct hci_ev_role_change)),
7343         /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7344         HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7345                   sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7346         /* [0x14 = HCI_EV_MODE_CHANGE] */
7347         HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7348                sizeof(struct hci_ev_mode_change)),
7349         /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7350         HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7351                sizeof(struct hci_ev_pin_code_req)),
7352         /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7353         HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7354                sizeof(struct hci_ev_link_key_req)),
7355         /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7356         HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7357                sizeof(struct hci_ev_link_key_notify)),
7358         /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7359         HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7360                sizeof(struct hci_ev_clock_offset)),
7361         /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7362         HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7363                sizeof(struct hci_ev_pkt_type_change)),
7364         /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7365         HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7366                sizeof(struct hci_ev_pscan_rep_mode)),
7367         /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7368         HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7369                   hci_inquiry_result_with_rssi_evt,
7370                   sizeof(struct hci_ev_inquiry_result_rssi),
7371                   HCI_MAX_EVENT_SIZE),
7372         /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7373         HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7374                sizeof(struct hci_ev_remote_ext_features)),
7375         /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7376         HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7377                sizeof(struct hci_ev_sync_conn_complete)),
7378         /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7379         HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7380                   hci_extended_inquiry_result_evt,
7381                   sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7382         /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7383         HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7384                sizeof(struct hci_ev_key_refresh_complete)),
7385         /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7386         HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7387                sizeof(struct hci_ev_io_capa_request)),
7388         /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7389         HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7390                sizeof(struct hci_ev_io_capa_reply)),
7391         /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7392         HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7393                sizeof(struct hci_ev_user_confirm_req)),
7394         /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7395         HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7396                sizeof(struct hci_ev_user_passkey_req)),
7397         /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7398         HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7399                sizeof(struct hci_ev_remote_oob_data_request)),
7400         /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7401         HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7402                sizeof(struct hci_ev_simple_pair_complete)),
7403         /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7404         HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7405                sizeof(struct hci_ev_user_passkey_notify)),
7406         /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7407         HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7408                sizeof(struct hci_ev_keypress_notify)),
7409         /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7410         HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7411                sizeof(struct hci_ev_remote_host_features)),
7412         /* [0x3e = HCI_EV_LE_META] */
7413         HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7414                       sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7415 #if IS_ENABLED(CONFIG_BT_HS)
7416         /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7417         HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7418                sizeof(struct hci_ev_phy_link_complete)),
7419         /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7420         HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7421                sizeof(struct hci_ev_channel_selected)),
7422         /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7423         HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7424                hci_disconn_loglink_complete_evt,
7425                sizeof(struct hci_ev_disconn_logical_link_complete)),
7426         /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7427         HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7428                sizeof(struct hci_ev_logical_link_complete)),
7429         /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7430         HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7431                hci_disconn_phylink_complete_evt,
7432                sizeof(struct hci_ev_disconn_phy_link_complete)),
7433 #endif
7434         /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7435         HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7436                sizeof(struct hci_ev_num_comp_blocks)),
7437         /* [0xff = HCI_EV_VENDOR] */
7438         HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7439 };
7440
7441 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7442                            u16 *opcode, u8 *status,
7443                            hci_req_complete_t *req_complete,
7444                            hci_req_complete_skb_t *req_complete_skb)
7445 {
7446         const struct hci_ev *ev = &hci_ev_table[event];
7447         void *data;
7448
7449         if (!ev->func)
7450                 return;
7451
7452         if (skb->len < ev->min_len) {
7453                 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7454                            event, skb->len, ev->min_len);
7455                 return;
7456         }
7457
7458         /* Just warn if the length is over max_len size it still be
7459          * possible to partially parse the event so leave to callback to
7460          * decide if that is acceptable.
7461          */
7462         if (skb->len > ev->max_len)
7463                 bt_dev_warn_ratelimited(hdev,
7464                                         "unexpected event 0x%2.2x length: %u > %u",
7465                                         event, skb->len, ev->max_len);
7466
7467         data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7468         if (!data)
7469                 return;
7470
7471         if (ev->req)
7472                 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7473                              req_complete_skb);
7474         else
7475                 ev->func(hdev, data, skb);
7476 }
7477
7478 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7479 {
7480         struct hci_event_hdr *hdr = (void *) skb->data;
7481         hci_req_complete_t req_complete = NULL;
7482         hci_req_complete_skb_t req_complete_skb = NULL;
7483         struct sk_buff *orig_skb = NULL;
7484         u8 status = 0, event, req_evt = 0;
7485         u16 opcode = HCI_OP_NOP;
7486
7487         if (skb->len < sizeof(*hdr)) {
7488                 bt_dev_err(hdev, "Malformed HCI Event");
7489                 goto done;
7490         }
7491
7492         kfree_skb(hdev->recv_event);
7493         hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7494
7495         event = hdr->evt;
7496         if (!event) {
7497                 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7498                             event);
7499                 goto done;
7500         }
7501
7502         /* Only match event if command OGF is not for LE */
7503         if (hdev->sent_cmd &&
7504             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7505             hci_skb_event(hdev->sent_cmd) == event) {
7506                 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7507                                      status, &req_complete, &req_complete_skb);
7508                 req_evt = event;
7509         }
7510
7511         /* If it looks like we might end up having to call
7512          * req_complete_skb, store a pristine copy of the skb since the
7513          * various handlers may modify the original one through
7514          * skb_pull() calls, etc.
7515          */
7516         if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7517             event == HCI_EV_CMD_COMPLETE)
7518                 orig_skb = skb_clone(skb, GFP_KERNEL);
7519
7520         skb_pull(skb, HCI_EVENT_HDR_SIZE);
7521
7522         /* Store wake reason if we're suspended */
7523         hci_store_wake_reason(hdev, event, skb);
7524
7525         bt_dev_dbg(hdev, "event 0x%2.2x", event);
7526
7527         hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7528                        &req_complete_skb);
7529
7530         if (req_complete) {
7531                 req_complete(hdev, status, opcode);
7532         } else if (req_complete_skb) {
7533                 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7534                         kfree_skb(orig_skb);
7535                         orig_skb = NULL;
7536                 }
7537                 req_complete_skb(hdev, status, opcode, orig_skb);
7538         }
7539
7540 done:
7541         kfree_skb(orig_skb);
7542         kfree_skb(skb);
7543         hdev->stat.evt_rx++;
7544 }