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 #ifdef TIZEN_BT
 217         struct hci_cp_write_link_policy cp;
 218         struct hci_conn *sco_conn;
 219 #endif
 220
 221         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 222
 223         if (rp->status)
 224                 return rp->status;
 225
 226         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
 227         if (!sent)
 228                 return rp->status;
 229
 230         hci_dev_lock(hdev);
 231
 232         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 233         if (conn)
 234                 conn->link_policy = get_unaligned_le16(sent + 2);
 235
 236 #ifdef TIZEN_BT
 237         sco_conn = hci_conn_hash_lookup_sco(hdev);
 238         if (sco_conn && bacmp(&sco_conn->dst, &conn->dst) == 0 &&
 239             conn->link_policy & HCI_LP_SNIFF) {
 240                 BT_ERR("SNIFF is not allowed during sco connection");
 241                 cp.handle = __cpu_to_le16(conn->handle);
 242                 cp.policy = __cpu_to_le16(conn->link_policy & ~HCI_LP_SNIFF);
 243                 hci_send_cmd(hdev, HCI_OP_WRITE_LINK_POLICY, sizeof(cp), &cp);
 244         }
 245 #endif
 246
 247         hci_dev_unlock(hdev);
 248
 249         return rp->status;
 250 }
 251
 252 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data,
 253                                       struct sk_buff *skb)
 254 {
 255         struct hci_rp_read_def_link_policy *rp = data;
 256
 257         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 258
 259         if (rp->status)
 260                 return rp->status;
 261
 262         hdev->link_policy = __le16_to_cpu(rp->policy);
 263
 264         return rp->status;
 265 }
 266
 267 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data,
 268                                        struct sk_buff *skb)
 269 {
 270         struct hci_ev_status *rp = data;
 271         void *sent;
 272
 273         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 274
 275         if (rp->status)
 276                 return rp->status;
 277
 278         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
 279         if (!sent)
 280                 return rp->status;
 281
 282         hdev->link_policy = get_unaligned_le16(sent);
 283
 284         return rp->status;
 285 }
 286
 287 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb)
 288 {
 289         struct hci_ev_status *rp = data;
 290
 291         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 292
 293         clear_bit(HCI_RESET, &hdev->flags);
 294
 295         if (rp->status)
 296                 return rp->status;
 297
 298         /* Reset all non-persistent flags */
 299         hci_dev_clear_volatile_flags(hdev);
 300
 301         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
 302
 303         hdev->inq_tx_power = HCI_TX_POWER_INVALID;
 304         hdev->adv_tx_power = HCI_TX_POWER_INVALID;
 305
 306         memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
 307         hdev->adv_data_len = 0;
 308
 309         memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
 310         hdev->scan_rsp_data_len = 0;
 311
 312         hdev->le_scan_type = LE_SCAN_PASSIVE;
 313
 314         hdev->ssp_debug_mode = 0;
 315
 316         hci_bdaddr_list_clear(&hdev->le_accept_list);
 317         hci_bdaddr_list_clear(&hdev->le_resolv_list);
 318
 319         return rp->status;
 320 }
 321
 322 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data,
 323                                       struct sk_buff *skb)
 324 {
 325         struct hci_rp_read_stored_link_key *rp = data;
 326         struct hci_cp_read_stored_link_key *sent;
 327
 328         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 329
 330         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
 331         if (!sent)
 332                 return rp->status;
 333
 334         if (!rp->status && sent->read_all == 0x01) {
 335                 hdev->stored_max_keys = le16_to_cpu(rp->max_keys);
 336                 hdev->stored_num_keys = le16_to_cpu(rp->num_keys);
 337         }
 338
 339         return rp->status;
 340 }
 341
 342 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data,
 343                                         struct sk_buff *skb)
 344 {
 345         struct hci_rp_delete_stored_link_key *rp = data;
 346         u16 num_keys;
 347
 348         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 349
 350         if (rp->status)
 351                 return rp->status;
 352
 353         num_keys = le16_to_cpu(rp->num_keys);
 354
 355         if (num_keys <= hdev->stored_num_keys)
 356                 hdev->stored_num_keys -= num_keys;
 357         else
 358                 hdev->stored_num_keys = 0;
 359
 360         return rp->status;
 361 }
 362
 363 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data,
 364                                   struct sk_buff *skb)
 365 {
 366         struct hci_ev_status *rp = data;
 367         void *sent;
 368
 369         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 370
 371         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
 372         if (!sent)
 373                 return rp->status;
 374
 375         hci_dev_lock(hdev);
 376
 377         if (hci_dev_test_flag(hdev, HCI_MGMT))
 378                 mgmt_set_local_name_complete(hdev, sent, rp->status);
 379         else if (!rp->status)
 380                 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
 381
 382         hci_dev_unlock(hdev);
 383
 384         return rp->status;
 385 }
 386
 387 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data,
 388                                  struct sk_buff *skb)
 389 {
 390         struct hci_rp_read_local_name *rp = data;
 391
 392         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 393
 394         if (rp->status)
 395                 return rp->status;
 396
 397         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 398             hci_dev_test_flag(hdev, HCI_CONFIG))
 399                 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
 400
 401         return rp->status;
 402 }
 403
 404 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data,
 405                                    struct sk_buff *skb)
 406 {
 407         struct hci_ev_status *rp = data;
 408         void *sent;
 409
 410         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 411
 412         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
 413         if (!sent)
 414                 return rp->status;
 415
 416         hci_dev_lock(hdev);
 417
 418         if (!rp->status) {
 419                 __u8 param = *((__u8 *) sent);
 420
 421                 if (param == AUTH_ENABLED)
 422                         set_bit(HCI_AUTH, &hdev->flags);
 423                 else
 424                         clear_bit(HCI_AUTH, &hdev->flags);
 425         }
 426
 427         if (hci_dev_test_flag(hdev, HCI_MGMT))
 428                 mgmt_auth_enable_complete(hdev, rp->status);
 429
 430         hci_dev_unlock(hdev);
 431
 432         return rp->status;
 433 }
 434
 435 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data,
 436                                     struct sk_buff *skb)
 437 {
 438         struct hci_ev_status *rp = data;
 439         __u8 param;
 440         void *sent;
 441
 442         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 443
 444         if (rp->status)
 445                 return rp->status;
 446
 447         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
 448         if (!sent)
 449                 return rp->status;
 450
 451         param = *((__u8 *) sent);
 452
 453         if (param)
 454                 set_bit(HCI_ENCRYPT, &hdev->flags);
 455         else
 456                 clear_bit(HCI_ENCRYPT, &hdev->flags);
 457
 458         return rp->status;
 459 }
 460
 461 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data,
 462                                    struct sk_buff *skb)
 463 {
 464         struct hci_ev_status *rp = data;
 465         __u8 param;
 466         void *sent;
 467
 468         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 469
 470         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
 471         if (!sent)
 472                 return rp->status;
 473
 474         param = *((__u8 *) sent);
 475
 476         hci_dev_lock(hdev);
 477
 478         if (rp->status) {
 479                 hdev->discov_timeout = 0;
 480                 goto done;
 481         }
 482
 483         if (param & SCAN_INQUIRY)
 484                 set_bit(HCI_ISCAN, &hdev->flags);
 485         else
 486                 clear_bit(HCI_ISCAN, &hdev->flags);
 487
 488         if (param & SCAN_PAGE)
 489                 set_bit(HCI_PSCAN, &hdev->flags);
 490         else
 491                 clear_bit(HCI_PSCAN, &hdev->flags);
 492
 493 done:
 494         hci_dev_unlock(hdev);
 495
 496         return rp->status;
 497 }
 498
 499 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data,
 500                                   struct sk_buff *skb)
 501 {
 502         struct hci_ev_status *rp = data;
 503         struct hci_cp_set_event_filter *cp;
 504         void *sent;
 505
 506         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 507
 508         if (rp->status)
 509                 return rp->status;
 510
 511         sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT);
 512         if (!sent)
 513                 return rp->status;
 514
 515         cp = (struct hci_cp_set_event_filter *)sent;
 516
 517         if (cp->flt_type == HCI_FLT_CLEAR_ALL)
 518                 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
 519         else
 520                 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
 521
 522         return rp->status;
 523 }
 524
 525 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data,
 526                                    struct sk_buff *skb)
 527 {
 528         struct hci_rp_read_class_of_dev *rp = data;
 529
 530         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 531
 532         if (rp->status)
 533                 return rp->status;
 534
 535         memcpy(hdev->dev_class, rp->dev_class, 3);
 536
 537         bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2],
 538                    hdev->dev_class[1], hdev->dev_class[0]);
 539
 540         return rp->status;
 541 }
 542
 543 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data,
 544                                     struct sk_buff *skb)
 545 {
 546         struct hci_ev_status *rp = data;
 547         void *sent;
 548
 549         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 550
 551         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
 552         if (!sent)
 553                 return rp->status;
 554
 555         hci_dev_lock(hdev);
 556
 557         if (!rp->status)
 558                 memcpy(hdev->dev_class, sent, 3);
 559
 560         if (hci_dev_test_flag(hdev, HCI_MGMT))
 561                 mgmt_set_class_of_dev_complete(hdev, sent, rp->status);
 562
 563         hci_dev_unlock(hdev);
 564
 565         return rp->status;
 566 }
 567
 568 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data,
 569                                     struct sk_buff *skb)
 570 {
 571         struct hci_rp_read_voice_setting *rp = data;
 572         __u16 setting;
 573
 574         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 575
 576         if (rp->status)
 577                 return rp->status;
 578
 579         setting = __le16_to_cpu(rp->voice_setting);
 580
 581         if (hdev->voice_setting == setting)
 582                 return rp->status;
 583
 584         hdev->voice_setting = setting;
 585
 586         bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
 587
 588         if (hdev->notify)
 589                 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
 590
 591         return rp->status;
 592 }
 593
 594 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data,
 595                                      struct sk_buff *skb)
 596 {
 597         struct hci_ev_status *rp = data;
 598         __u16 setting;
 599         void *sent;
 600
 601         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 602
 603         if (rp->status)
 604                 return rp->status;
 605
 606         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
 607         if (!sent)
 608                 return rp->status;
 609
 610         setting = get_unaligned_le16(sent);
 611
 612         if (hdev->voice_setting == setting)
 613                 return rp->status;
 614
 615         hdev->voice_setting = setting;
 616
 617         bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
 618
 619         if (hdev->notify)
 620                 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
 621
 622         return rp->status;
 623 }
 624
 625 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data,
 626                                         struct sk_buff *skb)
 627 {
 628         struct hci_rp_read_num_supported_iac *rp = data;
 629
 630         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 631
 632         if (rp->status)
 633                 return rp->status;
 634
 635         hdev->num_iac = rp->num_iac;
 636
 637         bt_dev_dbg(hdev, "num iac %d", hdev->num_iac);
 638
 639         return rp->status;
 640 }
 641
 642 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data,
 643                                 struct sk_buff *skb)
 644 {
 645         struct hci_ev_status *rp = data;
 646         struct hci_cp_write_ssp_mode *sent;
 647
 648         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 649
 650         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
 651         if (!sent)
 652                 return rp->status;
 653
 654         hci_dev_lock(hdev);
 655
 656         if (!rp->status) {
 657                 if (sent->mode)
 658                         hdev->features[1][0] |= LMP_HOST_SSP;
 659                 else
 660                         hdev->features[1][0] &= ~LMP_HOST_SSP;
 661         }
 662
 663         if (!rp->status) {
 664                 if (sent->mode)
 665                         hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
 666                 else
 667                         hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
 668         }
 669
 670         hci_dev_unlock(hdev);
 671
 672         return rp->status;
 673 }
 674
 675 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data,
 676                                   struct sk_buff *skb)
 677 {
 678         struct hci_ev_status *rp = data;
 679         struct hci_cp_write_sc_support *sent;
 680
 681         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 682
 683         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
 684         if (!sent)
 685                 return rp->status;
 686
 687         hci_dev_lock(hdev);
 688
 689         if (!rp->status) {
 690                 if (sent->support)
 691                         hdev->features[1][0] |= LMP_HOST_SC;
 692                 else
 693                         hdev->features[1][0] &= ~LMP_HOST_SC;
 694         }
 695
 696         if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) {
 697                 if (sent->support)
 698                         hci_dev_set_flag(hdev, HCI_SC_ENABLED);
 699                 else
 700                         hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
 701         }
 702
 703         hci_dev_unlock(hdev);
 704
 705         return rp->status;
 706 }
 707
 708 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data,
 709                                     struct sk_buff *skb)
 710 {
 711         struct hci_rp_read_local_version *rp = data;
 712
 713         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 714
 715         if (rp->status)
 716                 return rp->status;
 717
 718         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 719             hci_dev_test_flag(hdev, HCI_CONFIG)) {
 720                 hdev->hci_ver = rp->hci_ver;
 721                 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
 722                 hdev->lmp_ver = rp->lmp_ver;
 723                 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
 724                 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
 725         }
 726
 727         return rp->status;
 728 }
 729
 730 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data,
 731                                    struct sk_buff *skb)
 732 {
 733         struct hci_rp_read_enc_key_size *rp = data;
 734         struct hci_conn *conn;
 735         u16 handle;
 736         u8 status = rp->status;
 737
 738         bt_dev_dbg(hdev, "status 0x%2.2x", status);
 739
 740         handle = le16_to_cpu(rp->handle);
 741
 742         hci_dev_lock(hdev);
 743
 744         conn = hci_conn_hash_lookup_handle(hdev, handle);
 745         if (!conn) {
 746                 status = 0xFF;
 747                 goto done;
 748         }
 749
 750         /* While unexpected, the read_enc_key_size command may fail. The most
 751          * secure approach is to then assume the key size is 0 to force a
 752          * disconnection.
 753          */
 754         if (status) {
 755                 bt_dev_err(hdev, "failed to read key size for handle %u",
 756                            handle);
 757                 conn->enc_key_size = 0;
 758         } else {
 759                 conn->enc_key_size = rp->key_size;
 760                 status = 0;
 761         }
 762
 763         hci_encrypt_cfm(conn, 0);
 764
 765 done:
 766         hci_dev_unlock(hdev);
 767
 768         return status;
 769 }
 770
 771 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data,
 772                                      struct sk_buff *skb)
 773 {
 774         struct hci_rp_read_local_commands *rp = data;
 775
 776         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 777
 778         if (rp->status)
 779                 return rp->status;
 780
 781         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 782             hci_dev_test_flag(hdev, HCI_CONFIG))
 783                 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
 784
 785         return rp->status;
 786 }
 787
 788 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data,
 789                                            struct sk_buff *skb)
 790 {
 791         struct hci_rp_read_auth_payload_to *rp = data;
 792         struct hci_conn *conn;
 793
 794         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 795
 796         if (rp->status)
 797                 return rp->status;
 798
 799         hci_dev_lock(hdev);
 800
 801         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 802         if (conn)
 803                 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
 804
 805         hci_dev_unlock(hdev);
 806
 807         return rp->status;
 808 }
 809
 810 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data,
 811                                             struct sk_buff *skb)
 812 {
 813         struct hci_rp_write_auth_payload_to *rp = data;
 814         struct hci_conn *conn;
 815         void *sent;
 816
 817         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 818
 819         if (rp->status)
 820                 return rp->status;
 821
 822         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
 823         if (!sent)
 824                 return rp->status;
 825
 826         hci_dev_lock(hdev);
 827
 828         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 829         if (conn)
 830                 conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
 831
 832         hci_dev_unlock(hdev);
 833
 834         return rp->status;
 835 }
 836
 837 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data,
 838                                      struct sk_buff *skb)
 839 {
 840         struct hci_rp_read_local_features *rp = data;
 841
 842         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 843
 844         if (rp->status)
 845                 return rp->status;
 846
 847         memcpy(hdev->features, rp->features, 8);
 848
 849         /* Adjust default settings according to features
 850          * supported by device. */
 851
 852         if (hdev->features[0][0] & LMP_3SLOT)
 853                 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
 854
 855         if (hdev->features[0][0] & LMP_5SLOT)
 856                 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
 857
 858         if (hdev->features[0][1] & LMP_HV2) {
 859                 hdev->pkt_type  |= (HCI_HV2);
 860                 hdev->esco_type |= (ESCO_HV2);
 861         }
 862
 863         if (hdev->features[0][1] & LMP_HV3) {
 864                 hdev->pkt_type  |= (HCI_HV3);
 865                 hdev->esco_type |= (ESCO_HV3);
 866         }
 867
 868         if (lmp_esco_capable(hdev))
 869                 hdev->esco_type |= (ESCO_EV3);
 870
 871         if (hdev->features[0][4] & LMP_EV4)
 872                 hdev->esco_type |= (ESCO_EV4);
 873
 874         if (hdev->features[0][4] & LMP_EV5)
 875                 hdev->esco_type |= (ESCO_EV5);
 876
 877         if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
 878                 hdev->esco_type |= (ESCO_2EV3);
 879
 880         if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
 881                 hdev->esco_type |= (ESCO_3EV3);
 882
 883         if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
 884                 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
 885
 886         return rp->status;
 887 }
 888
 889 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
 890                                          struct sk_buff *skb)
 891 {
 892         struct hci_rp_read_local_ext_features *rp = data;
 893
 894         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 895
 896         if (rp->status)
 897                 return rp->status;
 898
 899         if (hdev->max_page < rp->max_page) {
 900                 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
 901                              &hdev->quirks))
 902                         bt_dev_warn(hdev, "broken local ext features page 2");
 903                 else
 904                         hdev->max_page = rp->max_page;
 905         }
 906
 907         if (rp->page < HCI_MAX_PAGES)
 908                 memcpy(hdev->features[rp->page], rp->features, 8);
 909
 910         return rp->status;
 911 }
 912
 913 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data,
 914                                         struct sk_buff *skb)
 915 {
 916         struct hci_rp_read_flow_control_mode *rp = data;
 917
 918         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 919
 920         if (rp->status)
 921                 return rp->status;
 922
 923         hdev->flow_ctl_mode = rp->mode;
 924
 925         return rp->status;
 926 }
 927
 928 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data,
 929                                   struct sk_buff *skb)
 930 {
 931         struct hci_rp_read_buffer_size *rp = data;
 932
 933         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 934
 935         if (rp->status)
 936                 return rp->status;
 937
 938         hdev->acl_mtu  = __le16_to_cpu(rp->acl_mtu);
 939         hdev->sco_mtu  = rp->sco_mtu;
 940         hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
 941         hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
 942
 943         if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
 944                 hdev->sco_mtu  = 64;
 945                 hdev->sco_pkts = 8;
 946         }
 947
 948         hdev->acl_cnt = hdev->acl_pkts;
 949         hdev->sco_cnt = hdev->sco_pkts;
 950
 951         BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
 952                hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
 953
 954         return rp->status;
 955 }
 956
 957 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data,
 958                               struct sk_buff *skb)
 959 {
 960         struct hci_rp_read_bd_addr *rp = data;
 961
 962         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 963
 964         if (rp->status)
 965                 return rp->status;
 966
 967         if (test_bit(HCI_INIT, &hdev->flags))
 968                 bacpy(&hdev->bdaddr, &rp->bdaddr);
 969
 970         if (hci_dev_test_flag(hdev, HCI_SETUP))
 971                 bacpy(&hdev->setup_addr, &rp->bdaddr);
 972
 973         return rp->status;
 974 }
 975
 976 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data,
 977                                          struct sk_buff *skb)
 978 {
 979         struct hci_rp_read_local_pairing_opts *rp = data;
 980
 981         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 982
 983         if (rp->status)
 984                 return rp->status;
 985
 986         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 987             hci_dev_test_flag(hdev, HCI_CONFIG)) {
 988                 hdev->pairing_opts = rp->pairing_opts;
 989                 hdev->max_enc_key_size = rp->max_key_size;
 990         }
 991
 992         return rp->status;
 993 }
 994
 995 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data,
 996                                          struct sk_buff *skb)
 997 {
 998         struct hci_rp_read_page_scan_activity *rp = data;
 999
1000         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1001
1002         if (rp->status)
1003                 return rp->status;
1004
1005         if (test_bit(HCI_INIT, &hdev->flags)) {
1006                 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
1007                 hdev->page_scan_window = __le16_to_cpu(rp->window);
1008         }
1009
1010         return rp->status;
1011 }
1012
1013 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data,
1014                                           struct sk_buff *skb)
1015 {
1016         struct hci_ev_status *rp = data;
1017         struct hci_cp_write_page_scan_activity *sent;
1018
1019         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1020
1021         if (rp->status)
1022                 return rp->status;
1023
1024         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
1025         if (!sent)
1026                 return rp->status;
1027
1028         hdev->page_scan_interval = __le16_to_cpu(sent->interval);
1029         hdev->page_scan_window = __le16_to_cpu(sent->window);
1030
1031         return rp->status;
1032 }
1033
1034 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data,
1035                                      struct sk_buff *skb)
1036 {
1037         struct hci_rp_read_page_scan_type *rp = data;
1038
1039         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1040
1041         if (rp->status)
1042                 return rp->status;
1043
1044         if (test_bit(HCI_INIT, &hdev->flags))
1045                 hdev->page_scan_type = rp->type;
1046
1047         return rp->status;
1048 }
1049
1050 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data,
1051                                       struct sk_buff *skb)
1052 {
1053         struct hci_ev_status *rp = data;
1054         u8 *type;
1055
1056         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1057
1058         if (rp->status)
1059                 return rp->status;
1060
1061         type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
1062         if (type)
1063                 hdev->page_scan_type = *type;
1064
1065         return rp->status;
1066 }
1067
1068 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data,
1069                                       struct sk_buff *skb)
1070 {
1071         struct hci_rp_read_data_block_size *rp = data;
1072
1073         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1074
1075         if (rp->status)
1076                 return rp->status;
1077
1078         hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
1079         hdev->block_len = __le16_to_cpu(rp->block_len);
1080         hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
1081
1082         hdev->block_cnt = hdev->num_blocks;
1083
1084         BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
1085                hdev->block_cnt, hdev->block_len);
1086
1087         return rp->status;
1088 }
1089
1090 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data,
1091                             struct sk_buff *skb)
1092 {
1093         struct hci_rp_read_clock *rp = data;
1094         struct hci_cp_read_clock *cp;
1095         struct hci_conn *conn;
1096
1097         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1098
1099         if (rp->status)
1100                 return rp->status;
1101
1102         hci_dev_lock(hdev);
1103
1104         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
1105         if (!cp)
1106                 goto unlock;
1107
1108         if (cp->which == 0x00) {
1109                 hdev->clock = le32_to_cpu(rp->clock);
1110                 goto unlock;
1111         }
1112
1113         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1114         if (conn) {
1115                 conn->clock = le32_to_cpu(rp->clock);
1116                 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
1117         }
1118
1119 unlock:
1120         hci_dev_unlock(hdev);
1121         return rp->status;
1122 }
1123
1124 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data,
1125                                      struct sk_buff *skb)
1126 {
1127         struct hci_rp_read_local_amp_info *rp = data;
1128
1129         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1130
1131         if (rp->status)
1132                 return rp->status;
1133
1134         hdev->amp_status = rp->amp_status;
1135         hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
1136         hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
1137         hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
1138         hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
1139         hdev->amp_type = rp->amp_type;
1140         hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
1141         hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
1142         hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
1143         hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
1144
1145         return rp->status;
1146 }
1147
1148 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data,
1149                                        struct sk_buff *skb)
1150 {
1151         struct hci_rp_read_inq_rsp_tx_power *rp = data;
1152
1153         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1154
1155         if (rp->status)
1156                 return rp->status;
1157
1158         hdev->inq_tx_power = rp->tx_power;
1159
1160         return rp->status;
1161 }
1162
1163 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data,
1164                                              struct sk_buff *skb)
1165 {
1166         struct hci_rp_read_def_err_data_reporting *rp = data;
1167
1168         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1169
1170         if (rp->status)
1171                 return rp->status;
1172
1173         hdev->err_data_reporting = rp->err_data_reporting;
1174
1175         return rp->status;
1176 }
1177
1178 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data,
1179                                               struct sk_buff *skb)
1180 {
1181         struct hci_ev_status *rp = data;
1182         struct hci_cp_write_def_err_data_reporting *cp;
1183
1184         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1185
1186         if (rp->status)
1187                 return rp->status;
1188
1189         cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
1190         if (!cp)
1191                 return rp->status;
1192
1193         hdev->err_data_reporting = cp->err_data_reporting;
1194
1195         return rp->status;
1196 }
1197
1198 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data,
1199                                 struct sk_buff *skb)
1200 {
1201         struct hci_rp_pin_code_reply *rp = data;
1202         struct hci_cp_pin_code_reply *cp;
1203         struct hci_conn *conn;
1204
1205         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1206
1207         hci_dev_lock(hdev);
1208
1209         if (hci_dev_test_flag(hdev, HCI_MGMT))
1210                 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
1211
1212         if (rp->status)
1213                 goto unlock;
1214
1215         cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
1216         if (!cp)
1217                 goto unlock;
1218
1219         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1220         if (conn)
1221                 conn->pin_length = cp->pin_len;
1222
1223 unlock:
1224         hci_dev_unlock(hdev);
1225         return rp->status;
1226 }
1227
1228 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data,
1229                                     struct sk_buff *skb)
1230 {
1231         struct hci_rp_pin_code_neg_reply *rp = data;
1232
1233         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1234
1235         hci_dev_lock(hdev);
1236
1237         if (hci_dev_test_flag(hdev, HCI_MGMT))
1238                 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
1239                                                  rp->status);
1240
1241         hci_dev_unlock(hdev);
1242
1243         return rp->status;
1244 }
1245
1246 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data,
1247                                      struct sk_buff *skb)
1248 {
1249         struct hci_rp_le_read_buffer_size *rp = data;
1250
1251         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1252
1253         if (rp->status)
1254                 return rp->status;
1255
1256         hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
1257         hdev->le_pkts = rp->le_max_pkt;
1258
1259         hdev->le_cnt = hdev->le_pkts;
1260
1261         BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
1262
1263         return rp->status;
1264 }
1265
1266 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data,
1267                                         struct sk_buff *skb)
1268 {
1269         struct hci_rp_le_read_local_features *rp = data;
1270
1271         BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1272
1273         if (rp->status)
1274                 return rp->status;
1275
1276         memcpy(hdev->le_features, rp->features, 8);
1277
1278         return rp->status;
1279 }
1280
1281 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data,
1282                                       struct sk_buff *skb)
1283 {
1284         struct hci_rp_le_read_adv_tx_power *rp = data;
1285
1286         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1287
1288         if (rp->status)
1289                 return rp->status;
1290
1291         hdev->adv_tx_power = rp->tx_power;
1292
1293         return rp->status;
1294 }
1295
1296 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data,
1297                                     struct sk_buff *skb)
1298 {
1299         struct hci_rp_user_confirm_reply *rp = data;
1300
1301         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1302
1303         hci_dev_lock(hdev);
1304
1305         if (hci_dev_test_flag(hdev, HCI_MGMT))
1306                 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
1307                                                  rp->status);
1308
1309         hci_dev_unlock(hdev);
1310
1311         return rp->status;
1312 }
1313
1314 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data,
1315                                         struct sk_buff *skb)
1316 {
1317         struct hci_rp_user_confirm_reply *rp = data;
1318
1319         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1320
1321         hci_dev_lock(hdev);
1322
1323         if (hci_dev_test_flag(hdev, HCI_MGMT))
1324                 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1325                                                      ACL_LINK, 0, rp->status);
1326
1327         hci_dev_unlock(hdev);
1328
1329         return rp->status;
1330 }
1331
1332 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data,
1333                                     struct sk_buff *skb)
1334 {
1335         struct hci_rp_user_confirm_reply *rp = data;
1336
1337         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1338
1339         hci_dev_lock(hdev);
1340
1341         if (hci_dev_test_flag(hdev, HCI_MGMT))
1342                 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1343                                                  0, rp->status);
1344
1345         hci_dev_unlock(hdev);
1346
1347         return rp->status;
1348 }
1349
1350 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data,
1351                                         struct sk_buff *skb)
1352 {
1353         struct hci_rp_user_confirm_reply *rp = data;
1354
1355         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1356
1357         hci_dev_lock(hdev);
1358
1359         if (hci_dev_test_flag(hdev, HCI_MGMT))
1360                 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1361                                                      ACL_LINK, 0, rp->status);
1362
1363         hci_dev_unlock(hdev);
1364
1365         return rp->status;
1366 }
1367
1368 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data,
1369                                      struct sk_buff *skb)
1370 {
1371         struct hci_rp_read_local_oob_data *rp = data;
1372
1373         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1374
1375         return rp->status;
1376 }
1377
1378 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data,
1379                                          struct sk_buff *skb)
1380 {
1381         struct hci_rp_read_local_oob_ext_data *rp = data;
1382
1383         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1384
1385         return rp->status;
1386 }
1387
1388 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data,
1389                                     struct sk_buff *skb)
1390 {
1391         struct hci_ev_status *rp = data;
1392         bdaddr_t *sent;
1393
1394         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1395
1396         if (rp->status)
1397                 return rp->status;
1398
1399         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1400         if (!sent)
1401                 return rp->status;
1402
1403         hci_dev_lock(hdev);
1404
1405         bacpy(&hdev->random_addr, sent);
1406
1407         if (!bacmp(&hdev->rpa, sent)) {
1408                 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
1409                 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired,
1410                                    secs_to_jiffies(hdev->rpa_timeout));
1411         }
1412
1413         hci_dev_unlock(hdev);
1414
1415         return rp->status;
1416 }
1417
1418 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data,
1419                                     struct sk_buff *skb)
1420 {
1421         struct hci_ev_status *rp = data;
1422         struct hci_cp_le_set_default_phy *cp;
1423
1424         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1425
1426         if (rp->status)
1427                 return rp->status;
1428
1429         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1430         if (!cp)
1431                 return rp->status;
1432
1433         hci_dev_lock(hdev);
1434
1435         hdev->le_tx_def_phys = cp->tx_phys;
1436         hdev->le_rx_def_phys = cp->rx_phys;
1437
1438         hci_dev_unlock(hdev);
1439
1440         return rp->status;
1441 }
1442
1443 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data,
1444                                             struct sk_buff *skb)
1445 {
1446         struct hci_ev_status *rp = data;
1447         struct hci_cp_le_set_adv_set_rand_addr *cp;
1448         struct adv_info *adv;
1449
1450         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1451
1452         if (rp->status)
1453                 return rp->status;
1454
1455         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1456         /* Update only in case the adv instance since handle 0x00 shall be using
1457          * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
1458          * non-extended adverting.
1459          */
1460         if (!cp || !cp->handle)
1461                 return rp->status;
1462
1463         hci_dev_lock(hdev);
1464
1465         adv = hci_find_adv_instance(hdev, cp->handle);
1466         if (adv) {
1467                 bacpy(&adv->random_addr, &cp->bdaddr);
1468                 if (!bacmp(&hdev->rpa, &cp->bdaddr)) {
1469                         adv->rpa_expired = false;
1470                         queue_delayed_work(hdev->workqueue,
1471                                            &adv->rpa_expired_cb,
1472                                            secs_to_jiffies(hdev->rpa_timeout));
1473                 }
1474         }
1475
1476         hci_dev_unlock(hdev);
1477
1478         return rp->status;
1479 }
1480
1481 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data,
1482                                    struct sk_buff *skb)
1483 {
1484         struct hci_ev_status *rp = data;
1485         u8 *instance;
1486         int err;
1487
1488         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1489
1490         if (rp->status)
1491                 return rp->status;
1492
1493         instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET);
1494         if (!instance)
1495                 return rp->status;
1496
1497         hci_dev_lock(hdev);
1498
1499         err = hci_remove_adv_instance(hdev, *instance);
1500         if (!err)
1501                 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev,
1502                                          *instance);
1503
1504         hci_dev_unlock(hdev);
1505
1506         return rp->status;
1507 }
1508
1509 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data,
1510                                    struct sk_buff *skb)
1511 {
1512         struct hci_ev_status *rp = data;
1513         struct adv_info *adv, *n;
1514         int err;
1515
1516         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1517
1518         if (rp->status)
1519                 return rp->status;
1520
1521         if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS))
1522                 return rp->status;
1523
1524         hci_dev_lock(hdev);
1525
1526         list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1527                 u8 instance = adv->instance;
1528
1529                 err = hci_remove_adv_instance(hdev, instance);
1530                 if (!err)
1531                         mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd),
1532                                                  hdev, instance);
1533         }
1534
1535         hci_dev_unlock(hdev);
1536
1537         return rp->status;
1538 }
1539
1540 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data,
1541                                         struct sk_buff *skb)
1542 {
1543         struct hci_rp_le_read_transmit_power *rp = data;
1544
1545         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1546
1547         if (rp->status)
1548                 return rp->status;
1549
1550         hdev->min_le_tx_power = rp->min_le_tx_power;
1551         hdev->max_le_tx_power = rp->max_le_tx_power;
1552
1553         return rp->status;
1554 }
1555
1556 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data,
1557                                      struct sk_buff *skb)
1558 {
1559         struct hci_ev_status *rp = data;
1560         struct hci_cp_le_set_privacy_mode *cp;
1561         struct hci_conn_params *params;
1562
1563         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1564
1565         if (rp->status)
1566                 return rp->status;
1567
1568         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE);
1569         if (!cp)
1570                 return rp->status;
1571
1572         hci_dev_lock(hdev);
1573
1574         params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type);
1575         if (params)
1576                 params->privacy_mode = cp->mode;
1577
1578         hci_dev_unlock(hdev);
1579
1580         return rp->status;
1581 }
1582
1583 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data,
1584                                    struct sk_buff *skb)
1585 {
1586         struct hci_ev_status *rp = data;
1587         __u8 *sent;
1588
1589         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1590
1591         if (rp->status)
1592                 return rp->status;
1593
1594         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1595         if (!sent)
1596                 return rp->status;
1597
1598         hci_dev_lock(hdev);
1599
1600         /* If we're doing connection initiation as peripheral. Set a
1601          * timeout in case something goes wrong.
1602          */
1603         if (*sent) {
1604                 struct hci_conn *conn;
1605
1606                 hci_dev_set_flag(hdev, HCI_LE_ADV);
1607
1608                 conn = hci_lookup_le_connect(hdev);
1609                 if (conn)
1610                         queue_delayed_work(hdev->workqueue,
1611                                            &conn->le_conn_timeout,
1612                                            conn->conn_timeout);
1613         } else {
1614                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1615         }
1616
1617         hci_dev_unlock(hdev);
1618
1619         return rp->status;
1620 }
1621
1622 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
1623                                        struct sk_buff *skb)
1624 {
1625         struct hci_cp_le_set_ext_adv_enable *cp;
1626         struct hci_cp_ext_adv_set *set;
1627         struct adv_info *adv = NULL, *n;
1628         struct hci_ev_status *rp = data;
1629
1630         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1631
1632         if (rp->status)
1633                 return rp->status;
1634
1635         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1636         if (!cp)
1637                 return rp->status;
1638
1639         set = (void *)cp->data;
1640
1641         hci_dev_lock(hdev);
1642
1643         if (cp->num_of_sets)
1644                 adv = hci_find_adv_instance(hdev, set->handle);
1645
1646         if (cp->enable) {
1647                 struct hci_conn *conn;
1648
1649                 hci_dev_set_flag(hdev, HCI_LE_ADV);
1650
1651                 if (adv)
1652                         adv->enabled = true;
1653
1654                 conn = hci_lookup_le_connect(hdev);
1655                 if (conn)
1656                         queue_delayed_work(hdev->workqueue,
1657                                            &conn->le_conn_timeout,
1658                                            conn->conn_timeout);
1659         } else {
1660                 if (cp->num_of_sets) {
1661                         if (adv)
1662                                 adv->enabled = false;
1663
1664                         /* If just one instance was disabled check if there are
1665                          * any other instance enabled before clearing HCI_LE_ADV
1666                          */
1667                         list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1668                                                  list) {
1669                                 if (adv->enabled)
1670                                         goto unlock;
1671                         }
1672                 } else {
1673                         /* All instances shall be considered disabled */
1674                         list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1675                                                  list)
1676                                 adv->enabled = false;
1677                 }
1678
1679                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1680         }
1681
1682 unlock:
1683         hci_dev_unlock(hdev);
1684         return rp->status;
1685 }
1686
1687 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data,
1688                                    struct sk_buff *skb)
1689 {
1690         struct hci_cp_le_set_scan_param *cp;
1691         struct hci_ev_status *rp = data;
1692
1693         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1694
1695         if (rp->status)
1696                 return rp->status;
1697
1698         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1699         if (!cp)
1700                 return rp->status;
1701
1702         hci_dev_lock(hdev);
1703
1704         hdev->le_scan_type = cp->type;
1705
1706         hci_dev_unlock(hdev);
1707
1708         return rp->status;
1709 }
1710
1711 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data,
1712                                        struct sk_buff *skb)
1713 {
1714         struct hci_cp_le_set_ext_scan_params *cp;
1715         struct hci_ev_status *rp = data;
1716         struct hci_cp_le_scan_phy_params *phy_param;
1717
1718         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1719
1720         if (rp->status)
1721                 return rp->status;
1722
1723         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1724         if (!cp)
1725                 return rp->status;
1726
1727         phy_param = (void *)cp->data;
1728
1729         hci_dev_lock(hdev);
1730
1731         hdev->le_scan_type = phy_param->type;
1732
1733         hci_dev_unlock(hdev);
1734
1735         return rp->status;
1736 }
1737
1738 static bool has_pending_adv_report(struct hci_dev *hdev)
1739 {
1740         struct discovery_state *d = &hdev->discovery;
1741
1742         return bacmp(&d->last_adv_addr, BDADDR_ANY);
1743 }
1744
1745 static void clear_pending_adv_report(struct hci_dev *hdev)
1746 {
1747         struct discovery_state *d = &hdev->discovery;
1748
1749         bacpy(&d->last_adv_addr, BDADDR_ANY);
1750         d->last_adv_data_len = 0;
1751 }
1752
1753 #ifndef TIZEN_BT
1754 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1755                                      u8 bdaddr_type, s8 rssi, u32 flags,
1756                                      u8 *data, u8 len)
1757 {
1758         struct discovery_state *d = &hdev->discovery;
1759
1760         if (len > HCI_MAX_AD_LENGTH)
1761                 return;
1762
1763         bacpy(&d->last_adv_addr, bdaddr);
1764         d->last_adv_addr_type = bdaddr_type;
1765         d->last_adv_rssi = rssi;
1766         d->last_adv_flags = flags;
1767         memcpy(d->last_adv_data, data, len);
1768         d->last_adv_data_len = len;
1769 }
1770 #endif
1771
1772 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1773 {
1774         hci_dev_lock(hdev);
1775
1776         switch (enable) {
1777         case LE_SCAN_ENABLE:
1778                 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1779                 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1780                         clear_pending_adv_report(hdev);
1781                 if (hci_dev_test_flag(hdev, HCI_MESH))
1782                         hci_discovery_set_state(hdev, DISCOVERY_FINDING);
1783                 break;
1784
1785         case LE_SCAN_DISABLE:
1786                 /* We do this here instead of when setting DISCOVERY_STOPPED
1787                  * since the latter would potentially require waiting for
1788                  * inquiry to stop too.
1789                  */
1790                 if (has_pending_adv_report(hdev)) {
1791                         struct discovery_state *d = &hdev->discovery;
1792
1793                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1794                                           d->last_adv_addr_type, NULL,
1795                                           d->last_adv_rssi, d->last_adv_flags,
1796                                           d->last_adv_data,
1797                                           d->last_adv_data_len, NULL, 0, 0);
1798                 }
1799
1800                 /* Cancel this timer so that we don't try to disable scanning
1801                  * when it's already disabled.
1802                  */
1803                 cancel_delayed_work(&hdev->le_scan_disable);
1804
1805                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1806
1807                 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1808                  * interrupted scanning due to a connect request. Mark
1809                  * therefore discovery as stopped.
1810                  */
1811                 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1812 #ifndef TIZEN_BT /* The below line is kernel bug. */
1813                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1814 #else
1815                         hci_le_discovery_set_state(hdev, DISCOVERY_STOPPED);
1816 #endif
1817                 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1818                          hdev->discovery.state == DISCOVERY_FINDING)
1819                         queue_work(hdev->workqueue, &hdev->reenable_adv_work);
1820
1821                 break;
1822
1823         default:
1824                 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1825                            enable);
1826                 break;
1827         }
1828
1829         hci_dev_unlock(hdev);
1830 }
1831
1832 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1833                                     struct sk_buff *skb)
1834 {
1835         struct hci_cp_le_set_scan_enable *cp;
1836         struct hci_ev_status *rp = data;
1837
1838         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1839
1840         if (rp->status)
1841                 return rp->status;
1842
1843         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1844         if (!cp)
1845                 return rp->status;
1846
1847         le_set_scan_enable_complete(hdev, cp->enable);
1848
1849         return rp->status;
1850 }
1851
1852 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1853                                         struct sk_buff *skb)
1854 {
1855         struct hci_cp_le_set_ext_scan_enable *cp;
1856         struct hci_ev_status *rp = data;
1857
1858         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1859
1860         if (rp->status)
1861                 return rp->status;
1862
1863         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1864         if (!cp)
1865                 return rp->status;
1866
1867         le_set_scan_enable_complete(hdev, cp->enable);
1868
1869         return rp->status;
1870 }
1871
1872 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1873                                       struct sk_buff *skb)
1874 {
1875         struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1876
1877         bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1878                    rp->num_of_sets);
1879
1880         if (rp->status)
1881                 return rp->status;
1882
1883         hdev->le_num_of_adv_sets = rp->num_of_sets;
1884
1885         return rp->status;
1886 }
1887
1888 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1889                                           struct sk_buff *skb)
1890 {
1891         struct hci_rp_le_read_accept_list_size *rp = data;
1892
1893         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1894
1895         if (rp->status)
1896                 return rp->status;
1897
1898         hdev->le_accept_list_size = rp->size;
1899
1900         return rp->status;
1901 }
1902
1903 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1904                                       struct sk_buff *skb)
1905 {
1906         struct hci_ev_status *rp = data;
1907
1908         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1909
1910         if (rp->status)
1911                 return rp->status;
1912
1913         hci_dev_lock(hdev);
1914         hci_bdaddr_list_clear(&hdev->le_accept_list);
1915         hci_dev_unlock(hdev);
1916
1917         return rp->status;
1918 }
1919
1920 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1921                                        struct sk_buff *skb)
1922 {
1923         struct hci_cp_le_add_to_accept_list *sent;
1924         struct hci_ev_status *rp = data;
1925
1926         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1927
1928         if (rp->status)
1929                 return rp->status;
1930
1931         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1932         if (!sent)
1933                 return rp->status;
1934
1935         hci_dev_lock(hdev);
1936         hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
1937                             sent->bdaddr_type);
1938         hci_dev_unlock(hdev);
1939
1940         return rp->status;
1941 }
1942
1943 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1944                                          struct sk_buff *skb)
1945 {
1946         struct hci_cp_le_del_from_accept_list *sent;
1947         struct hci_ev_status *rp = data;
1948
1949         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1950
1951         if (rp->status)
1952                 return rp->status;
1953
1954         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1955         if (!sent)
1956                 return rp->status;
1957
1958         hci_dev_lock(hdev);
1959         hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
1960                             sent->bdaddr_type);
1961         hci_dev_unlock(hdev);
1962
1963         return rp->status;
1964 }
1965
1966 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1967                                           struct sk_buff *skb)
1968 {
1969         struct hci_rp_le_read_supported_states *rp = data;
1970
1971         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1972
1973         if (rp->status)
1974                 return rp->status;
1975
1976         memcpy(hdev->le_states, rp->le_states, 8);
1977
1978         return rp->status;
1979 }
1980
1981 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
1982                                       struct sk_buff *skb)
1983 {
1984         struct hci_rp_le_read_def_data_len *rp = data;
1985
1986         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1987
1988         if (rp->status)
1989                 return rp->status;
1990
1991         hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1992         hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1993
1994         return rp->status;
1995 }
1996
1997 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
1998                                        struct sk_buff *skb)
1999 {
2000         struct hci_cp_le_write_def_data_len *sent;
2001         struct hci_ev_status *rp = data;
2002
2003         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2004
2005         if (rp->status)
2006                 return rp->status;
2007
2008         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
2009         if (!sent)
2010                 return rp->status;
2011
2012         hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
2013         hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
2014
2015         return rp->status;
2016 }
2017
2018 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
2019                                        struct sk_buff *skb)
2020 {
2021         struct hci_cp_le_add_to_resolv_list *sent;
2022         struct hci_ev_status *rp = data;
2023
2024         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2025
2026         if (rp->status)
2027                 return rp->status;
2028
2029         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
2030         if (!sent)
2031                 return rp->status;
2032
2033         hci_dev_lock(hdev);
2034         hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2035                                 sent->bdaddr_type, sent->peer_irk,
2036                                 sent->local_irk);
2037         hci_dev_unlock(hdev);
2038
2039         return rp->status;
2040 }
2041
2042 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
2043                                          struct sk_buff *skb)
2044 {
2045         struct hci_cp_le_del_from_resolv_list *sent;
2046         struct hci_ev_status *rp = data;
2047
2048         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2049
2050         if (rp->status)
2051                 return rp->status;
2052
2053         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
2054         if (!sent)
2055                 return rp->status;
2056
2057         hci_dev_lock(hdev);
2058         hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2059                             sent->bdaddr_type);
2060         hci_dev_unlock(hdev);
2061
2062         return rp->status;
2063 }
2064
2065 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2066                                       struct sk_buff *skb)
2067 {
2068         struct hci_ev_status *rp = data;
2069
2070         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2071
2072         if (rp->status)
2073                 return rp->status;
2074
2075         hci_dev_lock(hdev);
2076         hci_bdaddr_list_clear(&hdev->le_resolv_list);
2077         hci_dev_unlock(hdev);
2078
2079         return rp->status;
2080 }
2081
2082 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2083                                           struct sk_buff *skb)
2084 {
2085         struct hci_rp_le_read_resolv_list_size *rp = data;
2086
2087         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2088
2089         if (rp->status)
2090                 return rp->status;
2091
2092         hdev->le_resolv_list_size = rp->size;
2093
2094         return rp->status;
2095 }
2096
2097 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2098                                                struct sk_buff *skb)
2099 {
2100         struct hci_ev_status *rp = data;
2101         __u8 *sent;
2102
2103         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2104
2105         if (rp->status)
2106                 return rp->status;
2107
2108         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2109         if (!sent)
2110                 return rp->status;
2111
2112         hci_dev_lock(hdev);
2113
2114         if (*sent)
2115                 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2116         else
2117                 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2118
2119         hci_dev_unlock(hdev);
2120
2121         return rp->status;
2122 }
2123
2124 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2125                                       struct sk_buff *skb)
2126 {
2127         struct hci_rp_le_read_max_data_len *rp = data;
2128
2129         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2130
2131 #ifndef TIZEN_BT
2132         if (rp->status)
2133                 return rp->status;
2134 #else
2135         hci_dev_lock(hdev);
2136 #endif
2137
2138         hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2139         hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2140         hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2141         hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2142
2143 #ifdef TIZEN_BT
2144         mgmt_le_read_maximum_data_length_complete(hdev, rp->status);
2145         hci_dev_unlock(hdev);
2146 #endif
2147
2148         return rp->status;
2149 }
2150
2151 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2152                                          struct sk_buff *skb)
2153 {
2154         struct hci_cp_write_le_host_supported *sent;
2155         struct hci_ev_status *rp = data;
2156
2157         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2158
2159         if (rp->status)
2160                 return rp->status;
2161
2162         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2163         if (!sent)
2164                 return rp->status;
2165
2166         hci_dev_lock(hdev);
2167
2168         if (sent->le) {
2169                 hdev->features[1][0] |= LMP_HOST_LE;
2170                 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2171         } else {
2172                 hdev->features[1][0] &= ~LMP_HOST_LE;
2173                 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2174                 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2175         }
2176
2177         if (sent->simul)
2178                 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2179         else
2180                 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2181
2182         hci_dev_unlock(hdev);
2183
2184         return rp->status;
2185 }
2186
2187 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2188                                struct sk_buff *skb)
2189 {
2190         struct hci_cp_le_set_adv_param *cp;
2191         struct hci_ev_status *rp = data;
2192
2193         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2194
2195         if (rp->status)
2196                 return rp->status;
2197
2198         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2199         if (!cp)
2200                 return rp->status;
2201
2202         hci_dev_lock(hdev);
2203         hdev->adv_addr_type = cp->own_address_type;
2204         hci_dev_unlock(hdev);
2205
2206         return rp->status;
2207 }
2208
2209 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2210                                    struct sk_buff *skb)
2211 {
2212         struct hci_rp_le_set_ext_adv_params *rp = data;
2213         struct hci_cp_le_set_ext_adv_params *cp;
2214         struct adv_info *adv_instance;
2215
2216         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2217
2218         if (rp->status)
2219                 return rp->status;
2220
2221         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2222         if (!cp)
2223                 return rp->status;
2224
2225         hci_dev_lock(hdev);
2226         hdev->adv_addr_type = cp->own_addr_type;
2227         if (!cp->handle) {
2228                 /* Store in hdev for instance 0 */
2229                 hdev->adv_tx_power = rp->tx_power;
2230         } else {
2231                 adv_instance = hci_find_adv_instance(hdev, cp->handle);
2232                 if (adv_instance)
2233                         adv_instance->tx_power = rp->tx_power;
2234         }
2235         /* Update adv data as tx power is known now */
2236         hci_update_adv_data(hdev, cp->handle);
2237
2238         hci_dev_unlock(hdev);
2239
2240         return rp->status;
2241 }
2242
2243 #ifdef TIZEN_BT
2244 static u8 hci_cc_enable_rssi(struct hci_dev *hdev, void *data,
2245                              struct sk_buff *skb)
2246 {
2247         struct hci_cc_rsp_enable_rssi *rp = data;
2248
2249         BT_DBG("hci_cc_enable_rssi - %s status 0x%2.2x Event_LE_ext_Opcode 0x%2.2x",
2250                hdev->name, rp->status, rp->le_ext_opcode);
2251
2252         mgmt_enable_rssi_cc(hdev, rp, rp->status);
2253
2254         return rp->status;
2255 }
2256
2257 static u8 hci_cc_get_raw_rssi(struct hci_dev *hdev, void *data,
2258                               struct sk_buff *skb)
2259 {
2260         struct hci_cc_rp_get_raw_rssi *rp = data;
2261
2262         BT_DBG("hci_cc_get_raw_rssi- %s Get Raw Rssi Response[%2.2x %4.4x %2.2X]",
2263                hdev->name, rp->status, rp->conn_handle, rp->rssi_dbm);
2264
2265         mgmt_raw_rssi_response(hdev, rp, rp->status);
2266
2267         return rp->status;
2268 }
2269
2270 static void hci_vendor_ext_rssi_link_alert_evt(struct hci_dev *hdev,
2271                                                struct sk_buff *skb)
2272 {
2273         struct hci_ev_vendor_specific_rssi_alert *ev = (void *)skb->data;
2274
2275         BT_DBG("RSSI event LE_RSSI_LINK_ALERT %X", LE_RSSI_LINK_ALERT);
2276
2277         mgmt_rssi_alert_evt(hdev, ev->conn_handle, ev->alert_type,
2278                             ev->rssi_dbm);
2279 }
2280
2281 static void hci_vendor_specific_group_ext_evt(struct hci_dev *hdev,
2282                                               struct sk_buff *skb)
2283 {
2284         struct hci_ev_ext_vendor_specific *ev = (void *)skb->data;
2285         __u8 event_le_ext_sub_code;
2286
2287         BT_DBG("RSSI event LE_META_VENDOR_SPECIFIC_GROUP_EVENT: %X",
2288                LE_META_VENDOR_SPECIFIC_GROUP_EVENT);
2289
2290         skb_pull(skb, sizeof(*ev));
2291         event_le_ext_sub_code = ev->event_le_ext_sub_code;
2292
2293         switch (event_le_ext_sub_code) {
2294         case LE_RSSI_LINK_ALERT:
2295                 hci_vendor_ext_rssi_link_alert_evt(hdev, skb);
2296                 break;
2297
2298         default:
2299                 break;
2300         }
2301 }
2302
2303 static void hci_vendor_multi_adv_state_change_evt(struct hci_dev *hdev,
2304                                                   struct sk_buff *skb)
2305 {
2306         struct hci_ev_vendor_specific_multi_adv_state *ev = (void *)skb->data;
2307
2308         BT_DBG("LE_MULTI_ADV_STATE_CHANGE_SUB_EVENT");
2309
2310         mgmt_multi_adv_state_change_evt(hdev, ev->adv_instance,
2311                                         ev->state_change_reason,
2312                                         ev->connection_handle);
2313 }
2314
2315 static void hci_vendor_specific_evt(struct hci_dev *hdev, void *data,
2316                                     struct sk_buff *skb)
2317 {
2318         struct hci_ev_vendor_specific *ev = (void *)skb->data;
2319         __u8 event_sub_code;
2320
2321         BT_DBG("hci_vendor_specific_evt");
2322
2323         skb_pull(skb, sizeof(*ev));
2324         event_sub_code = ev->event_sub_code;
2325
2326         switch (event_sub_code) {
2327         case LE_META_VENDOR_SPECIFIC_GROUP_EVENT:
2328                 hci_vendor_specific_group_ext_evt(hdev, skb);
2329                 break;
2330
2331         case LE_MULTI_ADV_STATE_CHANGE_SUB_EVENT:
2332                 hci_vendor_multi_adv_state_change_evt(hdev, skb);
2333                 break;
2334
2335         default:
2336                 break;
2337         }
2338 }
2339 #endif
2340
2341 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2342                            struct sk_buff *skb)
2343 {
2344         struct hci_rp_read_rssi *rp = data;
2345         struct hci_conn *conn;
2346
2347         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2348
2349         if (rp->status)
2350                 return rp->status;
2351
2352         hci_dev_lock(hdev);
2353
2354         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2355         if (conn)
2356                 conn->rssi = rp->rssi;
2357
2358         hci_dev_unlock(hdev);
2359
2360         return rp->status;
2361 }
2362
2363 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2364                                struct sk_buff *skb)
2365 {
2366         struct hci_cp_read_tx_power *sent;
2367         struct hci_rp_read_tx_power *rp = data;
2368         struct hci_conn *conn;
2369
2370         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2371
2372         if (rp->status)
2373                 return rp->status;
2374
2375         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2376         if (!sent)
2377                 return rp->status;
2378
2379         hci_dev_lock(hdev);
2380
2381         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2382         if (!conn)
2383                 goto unlock;
2384
2385         switch (sent->type) {
2386         case 0x00:
2387                 conn->tx_power = rp->tx_power;
2388                 break;
2389         case 0x01:
2390                 conn->max_tx_power = rp->tx_power;
2391                 break;
2392         }
2393
2394 unlock:
2395         hci_dev_unlock(hdev);
2396         return rp->status;
2397 }
2398
2399 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2400                                       struct sk_buff *skb)
2401 {
2402         struct hci_ev_status *rp = data;
2403         u8 *mode;
2404
2405         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2406
2407         if (rp->status)
2408                 return rp->status;
2409
2410         mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2411         if (mode)
2412                 hdev->ssp_debug_mode = *mode;
2413
2414         return rp->status;
2415 }
2416
2417 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2418 {
2419         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2420
2421         if (status) {
2422                 hci_conn_check_pending(hdev);
2423                 return;
2424         }
2425
2426         set_bit(HCI_INQUIRY, &hdev->flags);
2427 }
2428
2429 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2430 {
2431         struct hci_cp_create_conn *cp;
2432         struct hci_conn *conn;
2433
2434         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2435
2436         cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2437         if (!cp)
2438                 return;
2439
2440         hci_dev_lock(hdev);
2441
2442         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2443
2444         bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2445
2446         if (status) {
2447                 if (conn && conn->state == BT_CONNECT) {
2448                         if (status != 0x0c || conn->attempt > 2) {
2449                                 conn->state = BT_CLOSED;
2450                                 hci_connect_cfm(conn, status);
2451                                 hci_conn_del(conn);
2452                         } else
2453                                 conn->state = BT_CONNECT2;
2454                 }
2455         } else {
2456                 if (!conn) {
2457                         conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
2458                                             HCI_ROLE_MASTER);
2459                         if (!conn)
2460                                 bt_dev_err(hdev, "no memory for new connection");
2461                 }
2462         }
2463
2464         hci_dev_unlock(hdev);
2465 }
2466
2467 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2468 {
2469         struct hci_cp_add_sco *cp;
2470         struct hci_conn *acl, *sco;
2471         __u16 handle;
2472
2473         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2474
2475         if (!status)
2476                 return;
2477
2478         cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2479         if (!cp)
2480                 return;
2481
2482         handle = __le16_to_cpu(cp->handle);
2483
2484         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2485
2486         hci_dev_lock(hdev);
2487
2488         acl = hci_conn_hash_lookup_handle(hdev, handle);
2489         if (acl) {
2490                 sco = acl->link;
2491                 if (sco) {
2492                         sco->state = BT_CLOSED;
2493
2494                         hci_connect_cfm(sco, status);
2495                         hci_conn_del(sco);
2496                 }
2497         }
2498
2499         hci_dev_unlock(hdev);
2500 }
2501
2502 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2503 {
2504         struct hci_cp_auth_requested *cp;
2505         struct hci_conn *conn;
2506
2507         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2508
2509         if (!status)
2510                 return;
2511
2512         cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2513         if (!cp)
2514                 return;
2515
2516         hci_dev_lock(hdev);
2517
2518         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2519         if (conn) {
2520                 if (conn->state == BT_CONFIG) {
2521                         hci_connect_cfm(conn, status);
2522                         hci_conn_drop(conn);
2523                 }
2524         }
2525
2526         hci_dev_unlock(hdev);
2527 }
2528
2529 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2530 {
2531         struct hci_cp_set_conn_encrypt *cp;
2532         struct hci_conn *conn;
2533
2534         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2535
2536         if (!status)
2537                 return;
2538
2539         cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2540         if (!cp)
2541                 return;
2542
2543         hci_dev_lock(hdev);
2544
2545         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2546         if (conn) {
2547                 if (conn->state == BT_CONFIG) {
2548                         hci_connect_cfm(conn, status);
2549                         hci_conn_drop(conn);
2550                 }
2551         }
2552
2553         hci_dev_unlock(hdev);
2554 }
2555
2556 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2557                                     struct hci_conn *conn)
2558 {
2559         if (conn->state != BT_CONFIG || !conn->out)
2560                 return 0;
2561
2562         if (conn->pending_sec_level == BT_SECURITY_SDP)
2563                 return 0;
2564
2565         /* Only request authentication for SSP connections or non-SSP
2566          * devices with sec_level MEDIUM or HIGH or if MITM protection
2567          * is requested.
2568          */
2569         if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2570             conn->pending_sec_level != BT_SECURITY_FIPS &&
2571             conn->pending_sec_level != BT_SECURITY_HIGH &&
2572             conn->pending_sec_level != BT_SECURITY_MEDIUM)
2573                 return 0;
2574
2575         return 1;
2576 }
2577
2578 static int hci_resolve_name(struct hci_dev *hdev,
2579                                    struct inquiry_entry *e)
2580 {
2581         struct hci_cp_remote_name_req cp;
2582
2583         memset(&cp, 0, sizeof(cp));
2584
2585         bacpy(&cp.bdaddr, &e->data.bdaddr);
2586         cp.pscan_rep_mode = e->data.pscan_rep_mode;
2587         cp.pscan_mode = e->data.pscan_mode;
2588         cp.clock_offset = e->data.clock_offset;
2589
2590         return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2591 }
2592
2593 static bool hci_resolve_next_name(struct hci_dev *hdev)
2594 {
2595         struct discovery_state *discov = &hdev->discovery;
2596         struct inquiry_entry *e;
2597
2598         if (list_empty(&discov->resolve))
2599                 return false;
2600
2601         /* We should stop if we already spent too much time resolving names. */
2602         if (time_after(jiffies, discov->name_resolve_timeout)) {
2603                 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2604                 return false;
2605         }
2606
2607         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2608         if (!e)
2609                 return false;
2610
2611         if (hci_resolve_name(hdev, e) == 0) {
2612                 e->name_state = NAME_PENDING;
2613                 return true;
2614         }
2615
2616         return false;
2617 }
2618
2619 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2620                                    bdaddr_t *bdaddr, u8 *name, u8 name_len)
2621 {
2622         struct discovery_state *discov = &hdev->discovery;
2623         struct inquiry_entry *e;
2624
2625 #ifdef TIZEN_BT
2626         /* Update the mgmt connected state if necessary. Be careful with
2627          * conn objects that exist but are not (yet) connected however.
2628          * Only those in BT_CONFIG or BT_CONNECTED states can be
2629          * considered connected.
2630          */
2631         if (conn &&
2632             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) {
2633                 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2634                         mgmt_device_connected(hdev, conn, 0, name, name_len);
2635                 else
2636                         mgmt_device_name_update(hdev, bdaddr, name, name_len);
2637         }
2638 #else
2639         if (conn &&
2640             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2641             !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2642                 mgmt_device_connected(hdev, conn, name, name_len);
2643 #endif
2644
2645         if (discov->state == DISCOVERY_STOPPED)
2646                 return;
2647
2648         if (discov->state == DISCOVERY_STOPPING)
2649                 goto discov_complete;
2650
2651         if (discov->state != DISCOVERY_RESOLVING)
2652                 return;
2653
2654         e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2655         /* If the device was not found in a list of found devices names of which
2656          * are pending. there is no need to continue resolving a next name as it
2657          * will be done upon receiving another Remote Name Request Complete
2658          * Event */
2659         if (!e)
2660                 return;
2661
2662         list_del(&e->list);
2663
2664         e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2665         mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2666                          name, name_len);
2667
2668         if (hci_resolve_next_name(hdev))
2669                 return;
2670
2671 discov_complete:
2672         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2673 }
2674
2675 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2676 {
2677         struct hci_cp_remote_name_req *cp;
2678         struct hci_conn *conn;
2679
2680         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2681
2682         /* If successful wait for the name req complete event before
2683          * checking for the need to do authentication */
2684         if (!status)
2685                 return;
2686
2687         cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2688         if (!cp)
2689                 return;
2690
2691         hci_dev_lock(hdev);
2692
2693         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2694
2695         if (hci_dev_test_flag(hdev, HCI_MGMT))
2696                 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2697
2698         if (!conn)
2699                 goto unlock;
2700
2701         if (!hci_outgoing_auth_needed(hdev, conn))
2702                 goto unlock;
2703
2704         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2705                 struct hci_cp_auth_requested auth_cp;
2706
2707                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2708
2709                 auth_cp.handle = __cpu_to_le16(conn->handle);
2710                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2711                              sizeof(auth_cp), &auth_cp);
2712         }
2713
2714 unlock:
2715         hci_dev_unlock(hdev);
2716 }
2717
2718 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2719 {
2720         struct hci_cp_read_remote_features *cp;
2721         struct hci_conn *conn;
2722
2723         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2724
2725         if (!status)
2726                 return;
2727
2728         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2729         if (!cp)
2730                 return;
2731
2732         hci_dev_lock(hdev);
2733
2734         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2735         if (conn) {
2736                 if (conn->state == BT_CONFIG) {
2737                         hci_connect_cfm(conn, status);
2738                         hci_conn_drop(conn);
2739                 }
2740         }
2741
2742         hci_dev_unlock(hdev);
2743 }
2744
2745 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2746 {
2747         struct hci_cp_read_remote_ext_features *cp;
2748         struct hci_conn *conn;
2749
2750         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2751
2752         if (!status)
2753                 return;
2754
2755         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2756         if (!cp)
2757                 return;
2758
2759         hci_dev_lock(hdev);
2760
2761         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2762         if (conn) {
2763                 if (conn->state == BT_CONFIG) {
2764                         hci_connect_cfm(conn, status);
2765                         hci_conn_drop(conn);
2766                 }
2767         }
2768
2769         hci_dev_unlock(hdev);
2770 }
2771
2772 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2773 {
2774         struct hci_cp_setup_sync_conn *cp;
2775         struct hci_conn *acl, *sco;
2776         __u16 handle;
2777
2778         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2779
2780         if (!status)
2781                 return;
2782
2783         cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2784         if (!cp)
2785                 return;
2786
2787         handle = __le16_to_cpu(cp->handle);
2788
2789         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2790
2791         hci_dev_lock(hdev);
2792
2793         acl = hci_conn_hash_lookup_handle(hdev, handle);
2794         if (acl) {
2795                 sco = acl->link;
2796                 if (sco) {
2797                         sco->state = BT_CLOSED;
2798
2799                         hci_connect_cfm(sco, status);
2800                         hci_conn_del(sco);
2801                 }
2802         }
2803
2804         hci_dev_unlock(hdev);
2805 }
2806
2807 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2808 {
2809         struct hci_cp_enhanced_setup_sync_conn *cp;
2810         struct hci_conn *acl, *sco;
2811         __u16 handle;
2812
2813         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2814
2815         if (!status)
2816                 return;
2817
2818         cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2819         if (!cp)
2820                 return;
2821
2822         handle = __le16_to_cpu(cp->handle);
2823
2824         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2825
2826         hci_dev_lock(hdev);
2827
2828         acl = hci_conn_hash_lookup_handle(hdev, handle);
2829         if (acl) {
2830                 sco = acl->link;
2831                 if (sco) {
2832                         sco->state = BT_CLOSED;
2833
2834                         hci_connect_cfm(sco, status);
2835                         hci_conn_del(sco);
2836                 }
2837         }
2838
2839         hci_dev_unlock(hdev);
2840 }
2841
2842 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2843 {
2844         struct hci_cp_sniff_mode *cp;
2845         struct hci_conn *conn;
2846
2847         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2848
2849         if (!status)
2850                 return;
2851
2852         cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2853         if (!cp)
2854                 return;
2855
2856         hci_dev_lock(hdev);
2857
2858         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2859         if (conn) {
2860                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2861
2862                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2863                         hci_sco_setup(conn, status);
2864         }
2865
2866         hci_dev_unlock(hdev);
2867 }
2868
2869 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2870 {
2871         struct hci_cp_exit_sniff_mode *cp;
2872         struct hci_conn *conn;
2873
2874         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2875
2876         if (!status)
2877                 return;
2878
2879         cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2880         if (!cp)
2881                 return;
2882
2883         hci_dev_lock(hdev);
2884
2885         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2886         if (conn) {
2887                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2888
2889                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2890                         hci_sco_setup(conn, status);
2891         }
2892
2893         hci_dev_unlock(hdev);
2894 }
2895
2896 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2897 {
2898         struct hci_cp_disconnect *cp;
2899         struct hci_conn_params *params;
2900         struct hci_conn *conn;
2901         bool mgmt_conn;
2902
2903         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2904
2905         /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2906          * otherwise cleanup the connection immediately.
2907          */
2908         if (!status && !hdev->suspended)
2909                 return;
2910
2911         cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2912         if (!cp)
2913                 return;
2914
2915         hci_dev_lock(hdev);
2916
2917         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2918         if (!conn)
2919                 goto unlock;
2920
2921         if (status) {
2922                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2923                                        conn->dst_type, status);
2924
2925                 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2926                         hdev->cur_adv_instance = conn->adv_instance;
2927                         hci_enable_advertising(hdev);
2928                 }
2929
2930                 goto done;
2931         }
2932
2933         mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2934
2935         if (conn->type == ACL_LINK) {
2936                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2937                         hci_remove_link_key(hdev, &conn->dst);
2938         }
2939
2940         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2941         if (params) {
2942                 switch (params->auto_connect) {
2943                 case HCI_AUTO_CONN_LINK_LOSS:
2944                         if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2945                                 break;
2946                         fallthrough;
2947
2948                 case HCI_AUTO_CONN_DIRECT:
2949                 case HCI_AUTO_CONN_ALWAYS:
2950                         list_del_init(&params->action);
2951                         list_add(&params->action, &hdev->pend_le_conns);
2952                         break;
2953
2954                 default:
2955                         break;
2956                 }
2957         }
2958
2959         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2960                                  cp->reason, mgmt_conn);
2961
2962         hci_disconn_cfm(conn, cp->reason);
2963
2964 done:
2965         /* If the disconnection failed for any reason, the upper layer
2966          * does not retry to disconnect in current implementation.
2967          * Hence, we need to do some basic cleanup here and re-enable
2968          * advertising if necessary.
2969          */
2970         hci_conn_del(conn);
2971 unlock:
2972         hci_dev_unlock(hdev);
2973 }
2974
2975 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
2976 {
2977         /* When using controller based address resolution, then the new
2978          * address types 0x02 and 0x03 are used. These types need to be
2979          * converted back into either public address or random address type
2980          */
2981         switch (type) {
2982         case ADDR_LE_DEV_PUBLIC_RESOLVED:
2983                 if (resolved)
2984                         *resolved = true;
2985                 return ADDR_LE_DEV_PUBLIC;
2986         case ADDR_LE_DEV_RANDOM_RESOLVED:
2987                 if (resolved)
2988                         *resolved = true;
2989                 return ADDR_LE_DEV_RANDOM;
2990         }
2991
2992         if (resolved)
2993                 *resolved = false;
2994         return type;
2995 }
2996
2997 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2998                               u8 peer_addr_type, u8 own_address_type,
2999                               u8 filter_policy)
3000 {
3001         struct hci_conn *conn;
3002
3003         conn = hci_conn_hash_lookup_le(hdev, peer_addr,
3004                                        peer_addr_type);
3005         if (!conn)
3006                 return;
3007
3008         own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
3009
3010         /* Store the initiator and responder address information which
3011          * is needed for SMP. These values will not change during the
3012          * lifetime of the connection.
3013          */
3014         conn->init_addr_type = own_address_type;
3015         if (own_address_type == ADDR_LE_DEV_RANDOM)
3016                 bacpy(&conn->init_addr, &hdev->random_addr);
3017         else
3018                 bacpy(&conn->init_addr, &hdev->bdaddr);
3019
3020         conn->resp_addr_type = peer_addr_type;
3021         bacpy(&conn->resp_addr, peer_addr);
3022 }
3023
3024 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
3025 {
3026         struct hci_cp_le_create_conn *cp;
3027
3028         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3029
3030         /* All connection failure handling is taken care of by the
3031          * hci_conn_failed function which is triggered by the HCI
3032          * request completion callbacks used for connecting.
3033          */
3034         if (status)
3035                 return;
3036
3037         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
3038         if (!cp)
3039                 return;
3040
3041         hci_dev_lock(hdev);
3042
3043         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
3044                           cp->own_address_type, cp->filter_policy);
3045
3046         hci_dev_unlock(hdev);
3047 }
3048
3049 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
3050 {
3051         struct hci_cp_le_ext_create_conn *cp;
3052
3053         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3054
3055         /* All connection failure handling is taken care of by the
3056          * hci_conn_failed function which is triggered by the HCI
3057          * request completion callbacks used for connecting.
3058          */
3059         if (status)
3060                 return;
3061
3062         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
3063         if (!cp)
3064                 return;
3065
3066         hci_dev_lock(hdev);
3067
3068         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
3069                           cp->own_addr_type, cp->filter_policy);
3070
3071         hci_dev_unlock(hdev);
3072 }
3073
3074 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
3075 {
3076         struct hci_cp_le_read_remote_features *cp;
3077         struct hci_conn *conn;
3078
3079         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3080
3081         if (!status)
3082                 return;
3083
3084         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
3085         if (!cp)
3086                 return;
3087
3088         hci_dev_lock(hdev);
3089
3090         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3091         if (conn) {
3092                 if (conn->state == BT_CONFIG) {
3093                         hci_connect_cfm(conn, status);
3094                         hci_conn_drop(conn);
3095                 }
3096         }
3097
3098         hci_dev_unlock(hdev);
3099 }
3100
3101 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
3102 {
3103         struct hci_cp_le_start_enc *cp;
3104         struct hci_conn *conn;
3105
3106         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3107
3108         if (!status)
3109                 return;
3110
3111         hci_dev_lock(hdev);
3112
3113         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
3114         if (!cp)
3115                 goto unlock;
3116
3117         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3118         if (!conn)
3119                 goto unlock;
3120
3121         if (conn->state != BT_CONNECTED)
3122                 goto unlock;
3123
3124         hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3125         hci_conn_drop(conn);
3126
3127 unlock:
3128         hci_dev_unlock(hdev);
3129 }
3130
3131 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
3132 {
3133         struct hci_cp_switch_role *cp;
3134         struct hci_conn *conn;
3135
3136         BT_DBG("%s status 0x%2.2x", hdev->name, status);
3137
3138         if (!status)
3139                 return;
3140
3141         cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3142         if (!cp)
3143                 return;
3144
3145         hci_dev_lock(hdev);
3146
3147         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3148         if (conn)
3149                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3150
3151         hci_dev_unlock(hdev);
3152 }
3153
3154 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3155                                      struct sk_buff *skb)
3156 {
3157         struct hci_ev_status *ev = data;
3158         struct discovery_state *discov = &hdev->discovery;
3159         struct inquiry_entry *e;
3160
3161         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3162
3163         hci_conn_check_pending(hdev);
3164
3165         if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3166                 return;
3167
3168         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3169         wake_up_bit(&hdev->flags, HCI_INQUIRY);
3170
3171         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3172                 return;
3173
3174         hci_dev_lock(hdev);
3175
3176         if (discov->state != DISCOVERY_FINDING)
3177                 goto unlock;
3178
3179         if (list_empty(&discov->resolve)) {
3180                 /* When BR/EDR inquiry is active and no LE scanning is in
3181                  * progress, then change discovery state to indicate completion.
3182                  *
3183                  * When running LE scanning and BR/EDR inquiry simultaneously
3184                  * and the LE scan already finished, then change the discovery
3185                  * state to indicate completion.
3186                  */
3187                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3188                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3189                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3190                 goto unlock;
3191         }
3192
3193         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3194         if (e && hci_resolve_name(hdev, e) == 0) {
3195                 e->name_state = NAME_PENDING;
3196                 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3197                 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3198         } else {
3199                 /* When BR/EDR inquiry is active and no LE scanning is in
3200                  * progress, then change discovery state to indicate completion.
3201                  *
3202                  * When running LE scanning and BR/EDR inquiry simultaneously
3203                  * and the LE scan already finished, then change the discovery
3204                  * state to indicate completion.
3205                  */
3206                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3207                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3208                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3209         }
3210
3211 unlock:
3212         hci_dev_unlock(hdev);
3213 }
3214
3215 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3216                                    struct sk_buff *skb)
3217 {
3218         struct hci_ev_inquiry_result *ev = edata;
3219         struct inquiry_data data;
3220         int i;
3221
3222         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3223                              flex_array_size(ev, info, ev->num)))
3224                 return;
3225
3226         bt_dev_dbg(hdev, "num %d", ev->num);
3227
3228         if (!ev->num)
3229                 return;
3230
3231         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3232                 return;
3233
3234         hci_dev_lock(hdev);
3235
3236         for (i = 0; i < ev->num; i++) {
3237                 struct inquiry_info *info = &ev->info[i];
3238                 u32 flags;
3239
3240                 bacpy(&data.bdaddr, &info->bdaddr);
3241                 data.pscan_rep_mode     = info->pscan_rep_mode;
3242                 data.pscan_period_mode  = info->pscan_period_mode;
3243                 data.pscan_mode         = info->pscan_mode;
3244                 memcpy(data.dev_class, info->dev_class, 3);
3245                 data.clock_offset       = info->clock_offset;
3246                 data.rssi               = HCI_RSSI_INVALID;
3247                 data.ssp_mode           = 0x00;
3248
3249                 flags = hci_inquiry_cache_update(hdev, &data, false);
3250
3251                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3252                                   info->dev_class, HCI_RSSI_INVALID,
3253                                   flags, NULL, 0, NULL, 0, 0);
3254         }
3255
3256         hci_dev_unlock(hdev);
3257 }
3258
3259 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3260                                   struct sk_buff *skb)
3261 {
3262         struct hci_ev_conn_complete *ev = data;
3263         struct hci_conn *conn;
3264         u8 status = ev->status;
3265
3266         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3267
3268         hci_dev_lock(hdev);
3269
3270         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3271         if (!conn) {
3272                 /* In case of error status and there is no connection pending
3273                  * just unlock as there is nothing to cleanup.
3274                  */
3275                 if (ev->status)
3276                         goto unlock;
3277
3278                 /* Connection may not exist if auto-connected. Check the bredr
3279                  * allowlist to see if this device is allowed to auto connect.
3280                  * If link is an ACL type, create a connection class
3281                  * automatically.
3282                  *
3283                  * Auto-connect will only occur if the event filter is
3284                  * programmed with a given address. Right now, event filter is
3285                  * only used during suspend.
3286                  */
3287                 if (ev->link_type == ACL_LINK &&
3288                     hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3289                                                       &ev->bdaddr,
3290                                                       BDADDR_BREDR)) {
3291                         conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3292                                             HCI_ROLE_SLAVE);
3293                         if (!conn) {
3294                                 bt_dev_err(hdev, "no memory for new conn");
3295                                 goto unlock;
3296                         }
3297                 } else {
3298                         if (ev->link_type != SCO_LINK)
3299                                 goto unlock;
3300
3301                         conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3302                                                        &ev->bdaddr);
3303                         if (!conn)
3304                                 goto unlock;
3305
3306                         conn->type = SCO_LINK;
3307                 }
3308         }
3309
3310         /* The HCI_Connection_Complete event is only sent once per connection.
3311          * Processing it more than once per connection can corrupt kernel memory.
3312          *
3313          * As the connection handle is set here for the first time, it indicates
3314          * whether the connection is already set up.
3315          */
3316         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
3317                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3318                 goto unlock;
3319         }
3320
3321         if (!status) {
3322                 conn->handle = __le16_to_cpu(ev->handle);
3323                 if (conn->handle > HCI_CONN_HANDLE_MAX) {
3324                         bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
3325                                    conn->handle, HCI_CONN_HANDLE_MAX);
3326                         status = HCI_ERROR_INVALID_PARAMETERS;
3327                         goto done;
3328                 }
3329
3330                 if (conn->type == ACL_LINK) {
3331                         conn->state = BT_CONFIG;
3332                         hci_conn_hold(conn);
3333
3334                         if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3335                             !hci_find_link_key(hdev, &ev->bdaddr))
3336                                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3337                         else
3338                                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3339                 } else
3340                         conn->state = BT_CONNECTED;
3341
3342                 hci_debugfs_create_conn(conn);
3343                 hci_conn_add_sysfs(conn);
3344
3345                 if (test_bit(HCI_AUTH, &hdev->flags))
3346                         set_bit(HCI_CONN_AUTH, &conn->flags);
3347
3348                 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3349                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3350
3351                 /* Get remote features */
3352                 if (conn->type == ACL_LINK) {
3353                         struct hci_cp_read_remote_features cp;
3354                         cp.handle = ev->handle;
3355                         hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3356                                      sizeof(cp), &cp);
3357
3358                         hci_update_scan(hdev);
3359                 }
3360
3361                 /* Set packet type for incoming connection */
3362                 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3363                         struct hci_cp_change_conn_ptype cp;
3364                         cp.handle = ev->handle;
3365                         cp.pkt_type = cpu_to_le16(conn->pkt_type);
3366                         hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3367                                      &cp);
3368                 }
3369
3370 #ifdef TIZEN_BT
3371                 if (get_link_mode(conn) & HCI_LM_MASTER)
3372                         hci_conn_change_supervision_timeout(conn,
3373                                         LINK_SUPERVISION_TIMEOUT);
3374 #endif
3375         }
3376
3377         if (conn->type == ACL_LINK)
3378                 hci_sco_setup(conn, ev->status);
3379
3380 done:
3381         if (status) {
3382                 hci_conn_failed(conn, status);
3383         } else if (ev->link_type == SCO_LINK) {
3384                 switch (conn->setting & SCO_AIRMODE_MASK) {
3385                 case SCO_AIRMODE_CVSD:
3386                         if (hdev->notify)
3387                                 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3388                         break;
3389                 }
3390
3391                 hci_connect_cfm(conn, status);
3392         }
3393
3394 unlock:
3395         hci_dev_unlock(hdev);
3396
3397         hci_conn_check_pending(hdev);
3398 }
3399
3400 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3401 {
3402         struct hci_cp_reject_conn_req cp;
3403
3404         bacpy(&cp.bdaddr, bdaddr);
3405         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3406         hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3407 }
3408
3409 static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3410                                  struct sk_buff *skb)
3411 {
3412         struct hci_ev_conn_request *ev = data;
3413         int mask = hdev->link_mode;
3414         struct inquiry_entry *ie;
3415         struct hci_conn *conn;
3416         __u8 flags = 0;
3417
3418         bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3419
3420         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3421                                       &flags);
3422
3423         if (!(mask & HCI_LM_ACCEPT)) {
3424                 hci_reject_conn(hdev, &ev->bdaddr);
3425                 return;
3426         }
3427
3428         hci_dev_lock(hdev);
3429
3430         if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3431                                    BDADDR_BREDR)) {
3432                 hci_reject_conn(hdev, &ev->bdaddr);
3433                 goto unlock;
3434         }
3435
3436         /* Require HCI_CONNECTABLE or an accept list entry to accept the
3437          * connection. These features are only touched through mgmt so
3438          * only do the checks if HCI_MGMT is set.
3439          */
3440         if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3441             !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3442             !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3443                                                BDADDR_BREDR)) {
3444                 hci_reject_conn(hdev, &ev->bdaddr);
3445                 goto unlock;
3446         }
3447
3448         /* Connection accepted */
3449
3450         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3451         if (ie)
3452                 memcpy(ie->data.dev_class, ev->dev_class, 3);
3453
3454 #ifdef TIZEN_BT
3455                 if ((ev->link_type == SCO_LINK || ev->link_type == ESCO_LINK) &&
3456                     hci_conn_hash_lookup_sco(hdev)) {
3457                         struct hci_cp_reject_conn_req cp;
3458
3459                         bacpy(&cp.bdaddr, &ev->bdaddr);
3460                         cp.reason = HCI_ERROR_REJ_LIMITED_RESOURCES;
3461                         hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ,
3462                                      sizeof(cp), &cp);
3463                         hci_dev_unlock(hdev);
3464                         return;
3465                 }
3466 #endif
3467
3468         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3469                         &ev->bdaddr);
3470         if (!conn) {
3471                 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3472                                     HCI_ROLE_SLAVE);
3473                 if (!conn) {
3474                         bt_dev_err(hdev, "no memory for new connection");
3475                         goto unlock;
3476                 }
3477         }
3478
3479         memcpy(conn->dev_class, ev->dev_class, 3);
3480
3481         hci_dev_unlock(hdev);
3482
3483         if (ev->link_type == ACL_LINK ||
3484             (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3485                 struct hci_cp_accept_conn_req cp;
3486                 conn->state = BT_CONNECT;
3487
3488                 bacpy(&cp.bdaddr, &ev->bdaddr);
3489
3490                 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3491                         cp.role = 0x00; /* Become central */
3492                 else
3493                         cp.role = 0x01; /* Remain peripheral */
3494
3495                 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3496         } else if (!(flags & HCI_PROTO_DEFER)) {
3497                 struct hci_cp_accept_sync_conn_req cp;
3498                 conn->state = BT_CONNECT;
3499
3500                 bacpy(&cp.bdaddr, &ev->bdaddr);
3501                 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3502
3503                 cp.tx_bandwidth   = cpu_to_le32(0x00001f40);
3504                 cp.rx_bandwidth   = cpu_to_le32(0x00001f40);
3505                 cp.max_latency    = cpu_to_le16(0xffff);
3506                 cp.content_format = cpu_to_le16(hdev->voice_setting);
3507                 cp.retrans_effort = 0xff;
3508
3509                 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3510                              &cp);
3511         } else {
3512                 conn->state = BT_CONNECT2;
3513                 hci_connect_cfm(conn, 0);
3514         }
3515
3516         return;
3517 unlock:
3518         hci_dev_unlock(hdev);
3519 }
3520
3521 static u8 hci_to_mgmt_reason(u8 err)
3522 {
3523         switch (err) {
3524         case HCI_ERROR_CONNECTION_TIMEOUT:
3525                 return MGMT_DEV_DISCONN_TIMEOUT;
3526         case HCI_ERROR_REMOTE_USER_TERM:
3527         case HCI_ERROR_REMOTE_LOW_RESOURCES:
3528         case HCI_ERROR_REMOTE_POWER_OFF:
3529                 return MGMT_DEV_DISCONN_REMOTE;
3530         case HCI_ERROR_LOCAL_HOST_TERM:
3531                 return MGMT_DEV_DISCONN_LOCAL_HOST;
3532         default:
3533                 return MGMT_DEV_DISCONN_UNKNOWN;
3534         }
3535 }
3536
3537 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3538                                      struct sk_buff *skb)
3539 {
3540         struct hci_ev_disconn_complete *ev = data;
3541         u8 reason;
3542         struct hci_conn_params *params;
3543         struct hci_conn *conn;
3544         bool mgmt_connected;
3545
3546         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3547
3548         hci_dev_lock(hdev);
3549
3550         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3551         if (!conn)
3552                 goto unlock;
3553
3554         if (ev->status) {
3555                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3556                                        conn->dst_type, ev->status);
3557                 goto unlock;
3558         }
3559
3560         conn->state = BT_CLOSED;
3561
3562         mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3563
3564         if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3565                 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3566         else
3567                 reason = hci_to_mgmt_reason(ev->reason);
3568
3569         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3570                                 reason, mgmt_connected);
3571
3572         if (conn->type == ACL_LINK) {
3573                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3574                         hci_remove_link_key(hdev, &conn->dst);
3575
3576                 hci_update_scan(hdev);
3577         }
3578
3579         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3580         if (params) {
3581                 switch (params->auto_connect) {
3582                 case HCI_AUTO_CONN_LINK_LOSS:
3583                         if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3584                                 break;
3585                         fallthrough;
3586
3587                 case HCI_AUTO_CONN_DIRECT:
3588                 case HCI_AUTO_CONN_ALWAYS:
3589                         list_del_init(&params->action);
3590                         list_add(&params->action, &hdev->pend_le_conns);
3591                         hci_update_passive_scan(hdev);
3592                         break;
3593
3594                 default:
3595                         break;
3596                 }
3597         }
3598
3599         hci_disconn_cfm(conn, ev->reason);
3600
3601         /* Re-enable advertising if necessary, since it might
3602          * have been disabled by the connection. From the
3603          * HCI_LE_Set_Advertise_Enable command description in
3604          * the core specification (v4.0):
3605          * "The Controller shall continue advertising until the Host
3606          * issues an LE_Set_Advertise_Enable command with
3607          * Advertising_Enable set to 0x00 (Advertising is disabled)
3608          * or until a connection is created or until the Advertising
3609          * is timed out due to Directed Advertising."
3610          */
3611         if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3612                 hdev->cur_adv_instance = conn->adv_instance;
3613                 hci_enable_advertising(hdev);
3614         }
3615
3616         hci_conn_del(conn);
3617
3618 #ifdef TIZEN_BT
3619         if (type == ACL_LINK && !hci_conn_num(hdev, ACL_LINK)) {
3620                 int iscan;
3621                 int pscan;
3622
3623                 iscan = test_bit(HCI_ISCAN, &hdev->flags);
3624                 pscan = test_bit(HCI_PSCAN, &hdev->flags);
3625                 if (!iscan && !pscan) {
3626                         u8 scan_enable = SCAN_PAGE;
3627
3628                         hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE,
3629                                      sizeof(scan_enable), &scan_enable);
3630                 }
3631         }
3632 #endif
3633
3634 unlock:
3635         hci_dev_unlock(hdev);
3636 }
3637
3638 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3639                                   struct sk_buff *skb)
3640 {
3641         struct hci_ev_auth_complete *ev = data;
3642         struct hci_conn *conn;
3643
3644         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3645
3646         hci_dev_lock(hdev);
3647
3648         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3649         if (!conn)
3650                 goto unlock;
3651
3652 #ifdef TIZEN_BT
3653         /*  PIN or Key Missing patch */
3654         BT_DBG("remote_auth %x, remote_cap %x, auth_type %x, io_capability %x",
3655                conn->remote_auth, conn->remote_cap,
3656                conn->auth_type, conn->io_capability);
3657
3658         if (ev->status == 0x06 && hci_conn_ssp_enabled(conn)) {
3659                 struct hci_cp_auth_requested cp;
3660
3661                 BT_DBG("Pin or key missing");
3662                 hci_remove_link_key(hdev, &conn->dst);
3663                 cp.handle = cpu_to_le16(conn->handle);
3664                 hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED,
3665                              sizeof(cp), &cp);
3666                 goto unlock;
3667         }
3668 #endif
3669
3670         if (!ev->status) {
3671                 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3672
3673                 if (!hci_conn_ssp_enabled(conn) &&
3674                     test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
3675                         bt_dev_info(hdev, "re-auth of legacy device is not possible.");
3676                 } else {
3677                         set_bit(HCI_CONN_AUTH, &conn->flags);
3678                         conn->sec_level = conn->pending_sec_level;
3679                 }
3680         } else {
3681                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3682                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3683
3684                 mgmt_auth_failed(conn, ev->status);
3685         }
3686
3687         clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3688         clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
3689
3690         if (conn->state == BT_CONFIG) {
3691                 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3692                         struct hci_cp_set_conn_encrypt cp;
3693                         cp.handle  = ev->handle;
3694                         cp.encrypt = 0x01;
3695                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3696                                      &cp);
3697                 } else {
3698                         conn->state = BT_CONNECTED;
3699                         hci_connect_cfm(conn, ev->status);
3700                         hci_conn_drop(conn);
3701                 }
3702         } else {
3703                 hci_auth_cfm(conn, ev->status);
3704
3705                 hci_conn_hold(conn);
3706                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3707                 hci_conn_drop(conn);
3708         }
3709
3710         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3711                 if (!ev->status) {
3712                         struct hci_cp_set_conn_encrypt cp;
3713                         cp.handle  = ev->handle;
3714                         cp.encrypt = 0x01;
3715                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3716                                      &cp);
3717                 } else {
3718                         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3719                         hci_encrypt_cfm(conn, ev->status);
3720                 }
3721         }
3722
3723 unlock:
3724         hci_dev_unlock(hdev);
3725 }
3726
3727 static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3728                                 struct sk_buff *skb)
3729 {
3730         struct hci_ev_remote_name *ev = data;
3731         struct hci_conn *conn;
3732
3733         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3734
3735         hci_conn_check_pending(hdev);
3736
3737         hci_dev_lock(hdev);
3738
3739         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3740
3741         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3742                 goto check_auth;
3743
3744         if (ev->status == 0)
3745                 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3746                                        strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3747         else
3748                 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3749
3750 check_auth:
3751         if (!conn)
3752                 goto unlock;
3753
3754         if (!hci_outgoing_auth_needed(hdev, conn))
3755                 goto unlock;
3756
3757         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3758                 struct hci_cp_auth_requested cp;
3759
3760                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3761
3762                 cp.handle = __cpu_to_le16(conn->handle);
3763                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3764         }
3765
3766 unlock:
3767         hci_dev_unlock(hdev);
3768 }
3769
3770 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3771                                    struct sk_buff *skb)
3772 {
3773         struct hci_ev_encrypt_change *ev = data;
3774         struct hci_conn *conn;
3775
3776         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3777
3778         hci_dev_lock(hdev);
3779
3780         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3781         if (!conn)
3782                 goto unlock;
3783
3784         if (!ev->status) {
3785                 if (ev->encrypt) {
3786                         /* Encryption implies authentication */
3787                         set_bit(HCI_CONN_AUTH, &conn->flags);
3788                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3789                         conn->sec_level = conn->pending_sec_level;
3790
3791                         /* P-256 authentication key implies FIPS */
3792                         if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3793                                 set_bit(HCI_CONN_FIPS, &conn->flags);
3794
3795                         if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3796                             conn->type == LE_LINK)
3797                                 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3798                 } else {
3799                         clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3800                         clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3801                 }
3802         }
3803
3804         /* We should disregard the current RPA and generate a new one
3805          * whenever the encryption procedure fails.
3806          */
3807         if (ev->status && conn->type == LE_LINK) {
3808                 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3809                 hci_adv_instances_set_rpa_expired(hdev, true);
3810         }
3811
3812         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3813
3814         /* Check link security requirements are met */
3815         if (!hci_conn_check_link_mode(conn))
3816                 ev->status = HCI_ERROR_AUTH_FAILURE;
3817
3818         if (ev->status && conn->state == BT_CONNECTED) {
3819                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3820                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3821
3822                 /* Notify upper layers so they can cleanup before
3823                  * disconnecting.
3824                  */
3825                 hci_encrypt_cfm(conn, ev->status);
3826                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3827                 hci_conn_drop(conn);
3828                 goto unlock;
3829         }
3830
3831         /* Try reading the encryption key size for encrypted ACL links */
3832         if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3833                 struct hci_cp_read_enc_key_size cp;
3834
3835                 /* Only send HCI_Read_Encryption_Key_Size if the
3836                  * controller really supports it. If it doesn't, assume
3837                  * the default size (16).
3838                  */
3839                 if (!(hdev->commands[20] & 0x10)) {
3840                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3841                         goto notify;
3842                 }
3843
3844                 cp.handle = cpu_to_le16(conn->handle);
3845                 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3846                                  sizeof(cp), &cp)) {
3847                         bt_dev_err(hdev, "sending read key size failed");
3848                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3849                         goto notify;
3850                 }
3851
3852                 goto unlock;
3853         }
3854
3855         /* Set the default Authenticated Payload Timeout after
3856          * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3857          * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3858          * sent when the link is active and Encryption is enabled, the conn
3859          * type can be either LE or ACL and controller must support LMP Ping.
3860          * Ensure for AES-CCM encryption as well.
3861          */
3862         if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3863             test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3864             ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3865              (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3866                 struct hci_cp_write_auth_payload_to cp;
3867
3868                 cp.handle = cpu_to_le16(conn->handle);
3869                 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3870                 hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3871                              sizeof(cp), &cp);
3872         }
3873
3874 notify:
3875         hci_encrypt_cfm(conn, ev->status);
3876
3877 unlock:
3878         hci_dev_unlock(hdev);
3879 }
3880
3881 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3882                                              struct sk_buff *skb)
3883 {
3884         struct hci_ev_change_link_key_complete *ev = data;
3885         struct hci_conn *conn;
3886
3887         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3888
3889         hci_dev_lock(hdev);
3890
3891         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3892         if (conn) {
3893                 if (!ev->status)
3894                         set_bit(HCI_CONN_SECURE, &conn->flags);
3895
3896                 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3897
3898                 hci_key_change_cfm(conn, ev->status);
3899         }
3900
3901         hci_dev_unlock(hdev);
3902 }
3903
3904 static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3905                                     struct sk_buff *skb)
3906 {
3907         struct hci_ev_remote_features *ev = data;
3908         struct hci_conn *conn;
3909
3910         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3911
3912         hci_dev_lock(hdev);
3913
3914         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3915         if (!conn)
3916                 goto unlock;
3917
3918         if (!ev->status)
3919                 memcpy(conn->features[0], ev->features, 8);
3920
3921         if (conn->state != BT_CONFIG)
3922                 goto unlock;
3923
3924         if (!ev->status && lmp_ext_feat_capable(hdev) &&
3925             lmp_ext_feat_capable(conn)) {
3926                 struct hci_cp_read_remote_ext_features cp;
3927                 cp.handle = ev->handle;
3928                 cp.page = 0x01;
3929                 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3930                              sizeof(cp), &cp);
3931                 goto unlock;
3932         }
3933
3934         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3935                 struct hci_cp_remote_name_req cp;
3936                 memset(&cp, 0, sizeof(cp));
3937                 bacpy(&cp.bdaddr, &conn->dst);
3938                 cp.pscan_rep_mode = 0x02;
3939                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3940         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3941                 mgmt_device_connected(hdev, conn, NULL, 0);
3942
3943         if (!hci_outgoing_auth_needed(hdev, conn)) {
3944                 conn->state = BT_CONNECTED;
3945                 hci_connect_cfm(conn, ev->status);
3946                 hci_conn_drop(conn);
3947         }
3948
3949 unlock:
3950         hci_dev_unlock(hdev);
3951 }
3952
3953 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3954 {
3955         cancel_delayed_work(&hdev->cmd_timer);
3956
3957         rcu_read_lock();
3958         if (!test_bit(HCI_RESET, &hdev->flags)) {
3959                 if (ncmd) {
3960                         cancel_delayed_work(&hdev->ncmd_timer);
3961                         atomic_set(&hdev->cmd_cnt, 1);
3962                 } else {
3963                         if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3964                                 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3965                                                    HCI_NCMD_TIMEOUT);
3966                 }
3967         }
3968         rcu_read_unlock();
3969 }
3970
3971 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3972                                         struct sk_buff *skb)
3973 {
3974         struct hci_rp_le_read_buffer_size_v2 *rp = data;
3975
3976         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3977
3978         if (rp->status)
3979                 return rp->status;
3980
3981         hdev->le_mtu   = __le16_to_cpu(rp->acl_mtu);
3982         hdev->le_pkts  = rp->acl_max_pkt;
3983         hdev->iso_mtu  = __le16_to_cpu(rp->iso_mtu);
3984         hdev->iso_pkts = rp->iso_max_pkt;
3985
3986         hdev->le_cnt  = hdev->le_pkts;
3987         hdev->iso_cnt = hdev->iso_pkts;
3988
3989         BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3990                hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3991
3992         return rp->status;
3993 }
3994
3995 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3996                                    struct sk_buff *skb)
3997 {
3998         struct hci_rp_le_set_cig_params *rp = data;
3999         struct hci_conn *conn;
4000         int i = 0;
4001
4002         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4003
4004         hci_dev_lock(hdev);
4005
4006         if (rp->status) {
4007                 while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) {
4008                         conn->state = BT_CLOSED;
4009                         hci_connect_cfm(conn, rp->status);
4010                         hci_conn_del(conn);
4011                 }
4012                 goto unlock;
4013         }
4014
4015         rcu_read_lock();
4016
4017         list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
4018                 if (conn->type != ISO_LINK || conn->iso_qos.cig != rp->cig_id ||
4019                     conn->state == BT_CONNECTED)
4020                         continue;
4021
4022                 conn->handle = __le16_to_cpu(rp->handle[i++]);
4023
4024                 bt_dev_dbg(hdev, "%p handle 0x%4.4x link %p", conn,
4025                            conn->handle, conn->link);
4026
4027                 /* Create CIS if LE is already connected */
4028                 if (conn->link && conn->link->state == BT_CONNECTED) {
4029                         rcu_read_unlock();
4030                         hci_le_create_cis(conn->link);
4031                         rcu_read_lock();
4032                 }
4033
4034                 if (i == rp->num_handles)
4035                         break;
4036         }
4037
4038         rcu_read_unlock();
4039
4040 unlock:
4041         hci_dev_unlock(hdev);
4042
4043         return rp->status;
4044 }
4045
4046 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
4047                                    struct sk_buff *skb)
4048 {
4049         struct hci_rp_le_setup_iso_path *rp = data;
4050         struct hci_cp_le_setup_iso_path *cp;
4051         struct hci_conn *conn;
4052
4053         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4054
4055         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
4056         if (!cp)
4057                 return rp->status;
4058
4059         hci_dev_lock(hdev);
4060
4061         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
4062         if (!conn)
4063                 goto unlock;
4064
4065         if (rp->status) {
4066                 hci_connect_cfm(conn, rp->status);
4067                 hci_conn_del(conn);
4068                 goto unlock;
4069         }
4070
4071         switch (cp->direction) {
4072         /* Input (Host to Controller) */
4073         case 0x00:
4074                 /* Only confirm connection if output only */
4075                 if (conn->iso_qos.out.sdu && !conn->iso_qos.in.sdu)
4076                         hci_connect_cfm(conn, rp->status);
4077                 break;
4078         /* Output (Controller to Host) */
4079         case 0x01:
4080                 /* Confirm connection since conn->iso_qos is always configured
4081                  * last.
4082                  */
4083                 hci_connect_cfm(conn, rp->status);
4084                 break;
4085         }
4086
4087 unlock:
4088         hci_dev_unlock(hdev);
4089         return rp->status;
4090 }
4091
4092 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
4093 {
4094         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4095 }
4096
4097 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
4098                                    struct sk_buff *skb)
4099 {
4100         struct hci_ev_status *rp = data;
4101         struct hci_cp_le_set_per_adv_params *cp;
4102
4103         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4104
4105         if (rp->status)
4106                 return rp->status;
4107
4108         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
4109         if (!cp)
4110                 return rp->status;
4111
4112         /* TODO: set the conn state */
4113         return rp->status;
4114 }
4115
4116 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
4117                                        struct sk_buff *skb)
4118 {
4119         struct hci_ev_status *rp = data;
4120         __u8 *sent;
4121
4122         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4123
4124         if (rp->status)
4125                 return rp->status;
4126
4127         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
4128         if (!sent)
4129                 return rp->status;
4130
4131         hci_dev_lock(hdev);
4132
4133         if (*sent)
4134                 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
4135         else
4136                 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
4137
4138         hci_dev_unlock(hdev);
4139
4140         return rp->status;
4141 }
4142
4143 #define HCI_CC_VL(_op, _func, _min, _max) \
4144 { \
4145         .op = _op, \
4146         .func = _func, \
4147         .min_len = _min, \
4148         .max_len = _max, \
4149 }
4150
4151 #define HCI_CC(_op, _func, _len) \
4152         HCI_CC_VL(_op, _func, _len, _len)
4153
4154 #define HCI_CC_STATUS(_op, _func) \
4155         HCI_CC(_op, _func, sizeof(struct hci_ev_status))
4156
4157 static const struct hci_cc {
4158         u16  op;
4159         u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4160         u16  min_len;
4161         u16  max_len;
4162 } hci_cc_table[] = {
4163         HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4164         HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4165         HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4166         HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4167                       hci_cc_remote_name_req_cancel),
4168         HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4169                sizeof(struct hci_rp_role_discovery)),
4170         HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4171                sizeof(struct hci_rp_read_link_policy)),
4172         HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4173                sizeof(struct hci_rp_write_link_policy)),
4174         HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4175                sizeof(struct hci_rp_read_def_link_policy)),
4176         HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4177                       hci_cc_write_def_link_policy),
4178         HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4179         HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4180                sizeof(struct hci_rp_read_stored_link_key)),
4181         HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4182                sizeof(struct hci_rp_delete_stored_link_key)),
4183         HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4184         HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4185                sizeof(struct hci_rp_read_local_name)),
4186         HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4187         HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4188         HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4189         HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4190         HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4191                sizeof(struct hci_rp_read_class_of_dev)),
4192         HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4193         HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4194                sizeof(struct hci_rp_read_voice_setting)),
4195         HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4196         HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4197                sizeof(struct hci_rp_read_num_supported_iac)),
4198         HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4199         HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4200         HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4201                sizeof(struct hci_rp_read_auth_payload_to)),
4202         HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4203                sizeof(struct hci_rp_write_auth_payload_to)),
4204         HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4205                sizeof(struct hci_rp_read_local_version)),
4206         HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4207                sizeof(struct hci_rp_read_local_commands)),
4208         HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4209                sizeof(struct hci_rp_read_local_features)),
4210         HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4211                sizeof(struct hci_rp_read_local_ext_features)),
4212         HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4213                sizeof(struct hci_rp_read_buffer_size)),
4214         HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4215                sizeof(struct hci_rp_read_bd_addr)),
4216         HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4217                sizeof(struct hci_rp_read_local_pairing_opts)),
4218         HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4219                sizeof(struct hci_rp_read_page_scan_activity)),
4220         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4221                       hci_cc_write_page_scan_activity),
4222         HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4223                sizeof(struct hci_rp_read_page_scan_type)),
4224         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4225         HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4226                sizeof(struct hci_rp_read_data_block_size)),
4227         HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4228                sizeof(struct hci_rp_read_flow_control_mode)),
4229         HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4230                sizeof(struct hci_rp_read_local_amp_info)),
4231         HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4232                sizeof(struct hci_rp_read_clock)),
4233         HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4234                sizeof(struct hci_rp_read_enc_key_size)),
4235         HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4236                sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4237         HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4238                hci_cc_read_def_err_data_reporting,
4239                sizeof(struct hci_rp_read_def_err_data_reporting)),
4240         HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4241                       hci_cc_write_def_err_data_reporting),
4242         HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4243                sizeof(struct hci_rp_pin_code_reply)),
4244         HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4245                sizeof(struct hci_rp_pin_code_neg_reply)),
4246         HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4247                sizeof(struct hci_rp_read_local_oob_data)),
4248         HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4249                sizeof(struct hci_rp_read_local_oob_ext_data)),
4250         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4251                sizeof(struct hci_rp_le_read_buffer_size)),
4252         HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4253                sizeof(struct hci_rp_le_read_local_features)),
4254         HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4255                sizeof(struct hci_rp_le_read_adv_tx_power)),
4256         HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4257                sizeof(struct hci_rp_user_confirm_reply)),
4258         HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4259                sizeof(struct hci_rp_user_confirm_reply)),
4260         HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4261                sizeof(struct hci_rp_user_confirm_reply)),
4262         HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4263                sizeof(struct hci_rp_user_confirm_reply)),
4264         HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4265         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4266         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4267         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4268         HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4269                hci_cc_le_read_accept_list_size,
4270                sizeof(struct hci_rp_le_read_accept_list_size)),
4271         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4272         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4273                       hci_cc_le_add_to_accept_list),
4274         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4275                       hci_cc_le_del_from_accept_list),
4276         HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4277                sizeof(struct hci_rp_le_read_supported_states)),
4278         HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4279                sizeof(struct hci_rp_le_read_def_data_len)),
4280         HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4281                       hci_cc_le_write_def_data_len),
4282         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4283                       hci_cc_le_add_to_resolv_list),
4284         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4285                       hci_cc_le_del_from_resolv_list),
4286         HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4287                       hci_cc_le_clear_resolv_list),
4288         HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4289                sizeof(struct hci_rp_le_read_resolv_list_size)),
4290         HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4291                       hci_cc_le_set_addr_resolution_enable),
4292         HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4293                sizeof(struct hci_rp_le_read_max_data_len)),
4294         HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4295                       hci_cc_write_le_host_supported),
4296         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4297         HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4298                sizeof(struct hci_rp_read_rssi)),
4299         HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4300                sizeof(struct hci_rp_read_tx_power)),
4301         HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4302         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4303                       hci_cc_le_set_ext_scan_param),
4304         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4305                       hci_cc_le_set_ext_scan_enable),
4306         HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4307         HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4308                hci_cc_le_read_num_adv_sets,
4309                sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4310         HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4311                sizeof(struct hci_rp_le_set_ext_adv_params)),
4312         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4313                       hci_cc_le_set_ext_adv_enable),
4314         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4315                       hci_cc_le_set_adv_set_random_addr),
4316         HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4317         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4318         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4319         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4320                       hci_cc_le_set_per_adv_enable),
4321         HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4322                sizeof(struct hci_rp_le_read_transmit_power)),
4323 #ifdef TIZEN_BT
4324         HCI_CC(HCI_OP_ENABLE_RSSI, hci_cc_enable_rssi,
4325                sizeof(struct hci_cc_rsp_enable_rssi)),
4326         HCI_CC(HCI_OP_GET_RAW_RSSI, hci_cc_get_raw_rssi,
4327                sizeof(struct hci_cc_rp_get_raw_rssi)),
4328 #endif
4329         HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4330         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4331                sizeof(struct hci_rp_le_read_buffer_size_v2)),
4332         HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4333                   sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4334         HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4335                sizeof(struct hci_rp_le_setup_iso_path)),
4336 };
4337
4338 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4339                       struct sk_buff *skb)
4340 {
4341         void *data;
4342
4343         if (skb->len < cc->min_len) {
4344                 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4345                            cc->op, skb->len, cc->min_len);
4346                 return HCI_ERROR_UNSPECIFIED;
4347         }
4348
4349         /* Just warn if the length is over max_len size it still be possible to
4350          * partially parse the cc so leave to callback to decide if that is
4351          * acceptable.
4352          */
4353         if (skb->len > cc->max_len)
4354                 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4355                             cc->op, skb->len, cc->max_len);
4356
4357         data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4358         if (!data)
4359                 return HCI_ERROR_UNSPECIFIED;
4360
4361         return cc->func(hdev, data, skb);
4362 }
4363
4364 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4365                                  struct sk_buff *skb, u16 *opcode, u8 *status,
4366                                  hci_req_complete_t *req_complete,
4367                                  hci_req_complete_skb_t *req_complete_skb)
4368 {
4369         struct hci_ev_cmd_complete *ev = data;
4370         int i;
4371
4372         *opcode = __le16_to_cpu(ev->opcode);
4373
4374         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4375
4376         for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4377                 if (hci_cc_table[i].op == *opcode) {
4378                         *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4379                         break;
4380                 }
4381         }
4382
4383         if (i == ARRAY_SIZE(hci_cc_table)) {
4384                 /* Unknown opcode, assume byte 0 contains the status, so
4385                  * that e.g. __hci_cmd_sync() properly returns errors
4386                  * for vendor specific commands send by HCI drivers.
4387                  * If a vendor doesn't actually follow this convention we may
4388                  * need to introduce a vendor CC table in order to properly set
4389                  * the status.
4390                  */
4391                 *status = skb->data[0];
4392         }
4393
4394         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4395
4396         hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4397                              req_complete_skb);
4398
4399         if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4400                 bt_dev_err(hdev,
4401                            "unexpected event for opcode 0x%4.4x", *opcode);
4402                 return;
4403         }
4404
4405         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4406                 queue_work(hdev->workqueue, &hdev->cmd_work);
4407 }
4408
4409 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4410 {
4411         struct hci_cp_le_create_cis *cp;
4412         int i;
4413
4414         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4415
4416         if (!status)
4417                 return;
4418
4419         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4420         if (!cp)
4421                 return;
4422
4423         hci_dev_lock(hdev);
4424
4425         /* Remove connection if command failed */
4426         for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4427                 struct hci_conn *conn;
4428                 u16 handle;
4429
4430                 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4431
4432                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4433                 if (conn) {
4434                         conn->state = BT_CLOSED;
4435                         hci_connect_cfm(conn, status);
4436                         hci_conn_del(conn);
4437                 }
4438         }
4439
4440         hci_dev_unlock(hdev);
4441 }
4442
4443 #define HCI_CS(_op, _func) \
4444 { \
4445         .op = _op, \
4446         .func = _func, \
4447 }
4448
4449 static const struct hci_cs {
4450         u16  op;
4451         void (*func)(struct hci_dev *hdev, __u8 status);
4452 } hci_cs_table[] = {
4453         HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4454         HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4455         HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4456         HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4457         HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4458         HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4459         HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4460         HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4461         HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4462                hci_cs_read_remote_ext_features),
4463         HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4464         HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4465                hci_cs_enhanced_setup_sync_conn),
4466         HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4467         HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4468         HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4469         HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4470         HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4471         HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4472         HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4473         HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4474         HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4475 };
4476
4477 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4478                                struct sk_buff *skb, u16 *opcode, u8 *status,
4479                                hci_req_complete_t *req_complete,
4480                                hci_req_complete_skb_t *req_complete_skb)
4481 {
4482         struct hci_ev_cmd_status *ev = data;
4483         int i;
4484
4485         *opcode = __le16_to_cpu(ev->opcode);
4486         *status = ev->status;
4487
4488         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4489
4490         for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4491                 if (hci_cs_table[i].op == *opcode) {
4492                         hci_cs_table[i].func(hdev, ev->status);
4493                         break;
4494                 }
4495         }
4496
4497         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4498
4499         /* Indicate request completion if the command failed. Also, if
4500          * we're not waiting for a special event and we get a success
4501          * command status we should try to flag the request as completed
4502          * (since for this kind of commands there will not be a command
4503          * complete event).
4504          */
4505         if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4506                 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4507                                      req_complete_skb);
4508                 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4509                         bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4510                                    *opcode);
4511                         return;
4512                 }
4513         }
4514
4515         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4516                 queue_work(hdev->workqueue, &hdev->cmd_work);
4517 }
4518
4519 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4520                                    struct sk_buff *skb)
4521 {
4522         struct hci_ev_hardware_error *ev = data;
4523
4524         bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4525
4526 #ifdef TIZEN_BT
4527         hci_dev_lock(hdev);
4528         mgmt_hardware_error(hdev, ev->code);
4529         hci_dev_unlock(hdev);
4530 #endif
4531         hdev->hw_error_code = ev->code;
4532
4533         queue_work(hdev->req_workqueue, &hdev->error_reset);
4534 }
4535
4536 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4537                                 struct sk_buff *skb)
4538 {
4539         struct hci_ev_role_change *ev = data;
4540         struct hci_conn *conn;
4541
4542         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4543
4544         hci_dev_lock(hdev);
4545
4546         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4547         if (conn) {
4548                 if (!ev->status)
4549                         conn->role = ev->role;
4550
4551                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4552
4553                 hci_role_switch_cfm(conn, ev->status, ev->role);
4554 #ifdef TIZEN_BT
4555                 if (!ev->status && (get_link_mode(conn) & HCI_LM_MASTER))
4556                         hci_conn_change_supervision_timeout(conn,
4557                                         LINK_SUPERVISION_TIMEOUT);
4558 #endif
4559         }
4560
4561         hci_dev_unlock(hdev);
4562 }
4563
4564 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4565                                   struct sk_buff *skb)
4566 {
4567         struct hci_ev_num_comp_pkts *ev = data;
4568         int i;
4569
4570         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4571                              flex_array_size(ev, handles, ev->num)))
4572                 return;
4573
4574         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4575                 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4576                 return;
4577         }
4578
4579         bt_dev_dbg(hdev, "num %d", ev->num);
4580
4581         for (i = 0; i < ev->num; i++) {
4582                 struct hci_comp_pkts_info *info = &ev->handles[i];
4583                 struct hci_conn *conn;
4584                 __u16  handle, count;
4585
4586                 handle = __le16_to_cpu(info->handle);
4587                 count  = __le16_to_cpu(info->count);
4588
4589                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4590                 if (!conn)
4591                         continue;
4592
4593                 conn->sent -= count;
4594
4595                 switch (conn->type) {
4596                 case ACL_LINK:
4597                         hdev->acl_cnt += count;
4598                         if (hdev->acl_cnt > hdev->acl_pkts)
4599                                 hdev->acl_cnt = hdev->acl_pkts;
4600                         break;
4601
4602                 case LE_LINK:
4603                         if (hdev->le_pkts) {
4604                                 hdev->le_cnt += count;
4605                                 if (hdev->le_cnt > hdev->le_pkts)
4606                                         hdev->le_cnt = hdev->le_pkts;
4607                         } else {
4608                                 hdev->acl_cnt += count;
4609                                 if (hdev->acl_cnt > hdev->acl_pkts)
4610                                         hdev->acl_cnt = hdev->acl_pkts;
4611                         }
4612                         break;
4613
4614                 case SCO_LINK:
4615                         hdev->sco_cnt += count;
4616                         if (hdev->sco_cnt > hdev->sco_pkts)
4617                                 hdev->sco_cnt = hdev->sco_pkts;
4618                         break;
4619
4620                 case ISO_LINK:
4621                         if (hdev->iso_pkts) {
4622                                 hdev->iso_cnt += count;
4623                                 if (hdev->iso_cnt > hdev->iso_pkts)
4624                                         hdev->iso_cnt = hdev->iso_pkts;
4625                         } else if (hdev->le_pkts) {
4626                                 hdev->le_cnt += count;
4627                                 if (hdev->le_cnt > hdev->le_pkts)
4628                                         hdev->le_cnt = hdev->le_pkts;
4629                         } else {
4630                                 hdev->acl_cnt += count;
4631                                 if (hdev->acl_cnt > hdev->acl_pkts)
4632                                         hdev->acl_cnt = hdev->acl_pkts;
4633                         }
4634                         break;
4635
4636                 default:
4637                         bt_dev_err(hdev, "unknown type %d conn %p",
4638                                    conn->type, conn);
4639                         break;
4640                 }
4641         }
4642
4643         queue_work(hdev->workqueue, &hdev->tx_work);
4644 }
4645
4646 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4647                                                  __u16 handle)
4648 {
4649         struct hci_chan *chan;
4650
4651         switch (hdev->dev_type) {
4652         case HCI_PRIMARY:
4653                 return hci_conn_hash_lookup_handle(hdev, handle);
4654         case HCI_AMP:
4655                 chan = hci_chan_lookup_handle(hdev, handle);
4656                 if (chan)
4657                         return chan->conn;
4658                 break;
4659         default:
4660                 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4661                 break;
4662         }
4663
4664         return NULL;
4665 }
4666
4667 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4668                                     struct sk_buff *skb)
4669 {
4670         struct hci_ev_num_comp_blocks *ev = data;
4671         int i;
4672
4673         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4674                              flex_array_size(ev, handles, ev->num_hndl)))
4675                 return;
4676
4677         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4678                 bt_dev_err(hdev, "wrong event for mode %d",
4679                            hdev->flow_ctl_mode);
4680                 return;
4681         }
4682
4683         bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4684                    ev->num_hndl);
4685
4686         for (i = 0; i < ev->num_hndl; i++) {
4687                 struct hci_comp_blocks_info *info = &ev->handles[i];
4688                 struct hci_conn *conn = NULL;
4689                 __u16  handle, block_count;
4690
4691                 handle = __le16_to_cpu(info->handle);
4692                 block_count = __le16_to_cpu(info->blocks);
4693
4694                 conn = __hci_conn_lookup_handle(hdev, handle);
4695                 if (!conn)
4696                         continue;
4697
4698                 conn->sent -= block_count;
4699
4700                 switch (conn->type) {
4701                 case ACL_LINK:
4702                 case AMP_LINK:
4703                         hdev->block_cnt += block_count;
4704                         if (hdev->block_cnt > hdev->num_blocks)
4705                                 hdev->block_cnt = hdev->num_blocks;
4706                         break;
4707
4708                 default:
4709                         bt_dev_err(hdev, "unknown type %d conn %p",
4710                                    conn->type, conn);
4711                         break;
4712                 }
4713         }
4714
4715         queue_work(hdev->workqueue, &hdev->tx_work);
4716 }
4717
4718 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4719                                 struct sk_buff *skb)
4720 {
4721         struct hci_ev_mode_change *ev = data;
4722         struct hci_conn *conn;
4723
4724         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4725
4726         hci_dev_lock(hdev);
4727
4728         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4729         if (conn) {
4730                 conn->mode = ev->mode;
4731
4732                 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4733                                         &conn->flags)) {
4734                         if (conn->mode == HCI_CM_ACTIVE)
4735                                 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4736                         else
4737                                 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4738                 }
4739
4740                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4741                         hci_sco_setup(conn, ev->status);
4742         }
4743
4744         hci_dev_unlock(hdev);
4745 }
4746
4747 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4748                                      struct sk_buff *skb)
4749 {
4750         struct hci_ev_pin_code_req *ev = data;
4751         struct hci_conn *conn;
4752
4753         bt_dev_dbg(hdev, "");
4754
4755         hci_dev_lock(hdev);
4756
4757         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4758         if (!conn)
4759                 goto unlock;
4760
4761         if (conn->state == BT_CONNECTED) {
4762                 hci_conn_hold(conn);
4763                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4764                 hci_conn_drop(conn);
4765         }
4766
4767         if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4768             !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4769                 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4770                              sizeof(ev->bdaddr), &ev->bdaddr);
4771         } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4772                 u8 secure;
4773
4774                 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4775                         secure = 1;
4776                 else
4777                         secure = 0;
4778
4779                 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4780         }
4781
4782 unlock:
4783         hci_dev_unlock(hdev);
4784 }
4785
4786 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4787 {
4788         if (key_type == HCI_LK_CHANGED_COMBINATION)
4789                 return;
4790
4791         conn->pin_length = pin_len;
4792         conn->key_type = key_type;
4793
4794         switch (key_type) {
4795         case HCI_LK_LOCAL_UNIT:
4796         case HCI_LK_REMOTE_UNIT:
4797         case HCI_LK_DEBUG_COMBINATION:
4798                 return;
4799         case HCI_LK_COMBINATION:
4800                 if (pin_len == 16)
4801                         conn->pending_sec_level = BT_SECURITY_HIGH;
4802                 else
4803                         conn->pending_sec_level = BT_SECURITY_MEDIUM;
4804                 break;
4805         case HCI_LK_UNAUTH_COMBINATION_P192:
4806         case HCI_LK_UNAUTH_COMBINATION_P256:
4807                 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4808                 break;
4809         case HCI_LK_AUTH_COMBINATION_P192:
4810                 conn->pending_sec_level = BT_SECURITY_HIGH;
4811                 break;
4812         case HCI_LK_AUTH_COMBINATION_P256:
4813                 conn->pending_sec_level = BT_SECURITY_FIPS;
4814                 break;
4815         }
4816 }
4817
4818 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4819                                      struct sk_buff *skb)
4820 {
4821         struct hci_ev_link_key_req *ev = data;
4822         struct hci_cp_link_key_reply cp;
4823         struct hci_conn *conn;
4824         struct link_key *key;
4825
4826         bt_dev_dbg(hdev, "");
4827
4828         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4829                 return;
4830
4831         hci_dev_lock(hdev);
4832
4833         key = hci_find_link_key(hdev, &ev->bdaddr);
4834         if (!key) {
4835                 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4836                 goto not_found;
4837         }
4838
4839         bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4840
4841         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4842         if (conn) {
4843                 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4844
4845                 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4846                      key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4847                     conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4848                         bt_dev_dbg(hdev, "ignoring unauthenticated key");
4849                         goto not_found;
4850                 }
4851
4852                 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4853                     (conn->pending_sec_level == BT_SECURITY_HIGH ||
4854                      conn->pending_sec_level == BT_SECURITY_FIPS)) {
4855                         bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4856                         goto not_found;
4857                 }
4858
4859                 conn_set_key(conn, key->type, key->pin_len);
4860         }
4861
4862         bacpy(&cp.bdaddr, &ev->bdaddr);
4863         memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4864
4865         hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4866
4867         hci_dev_unlock(hdev);
4868
4869         return;
4870
4871 not_found:
4872         hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4873         hci_dev_unlock(hdev);
4874 }
4875
4876 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4877                                     struct sk_buff *skb)
4878 {
4879         struct hci_ev_link_key_notify *ev = data;
4880         struct hci_conn *conn;
4881         struct link_key *key;
4882         bool persistent;
4883         u8 pin_len = 0;
4884
4885         bt_dev_dbg(hdev, "");
4886
4887         hci_dev_lock(hdev);
4888
4889         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4890         if (!conn)
4891                 goto unlock;
4892
4893         hci_conn_hold(conn);
4894         conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4895         hci_conn_drop(conn);
4896
4897         set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4898         conn_set_key(conn, ev->key_type, conn->pin_length);
4899
4900         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4901                 goto unlock;
4902
4903         key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4904                                 ev->key_type, pin_len, &persistent);
4905         if (!key)
4906                 goto unlock;
4907
4908         /* Update connection information since adding the key will have
4909          * fixed up the type in the case of changed combination keys.
4910          */
4911         if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4912                 conn_set_key(conn, key->type, key->pin_len);
4913
4914         mgmt_new_link_key(hdev, key, persistent);
4915
4916         /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4917          * is set. If it's not set simply remove the key from the kernel
4918          * list (we've still notified user space about it but with
4919          * store_hint being 0).
4920          */
4921         if (key->type == HCI_LK_DEBUG_COMBINATION &&
4922             !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4923                 list_del_rcu(&key->list);
4924                 kfree_rcu(key, rcu);
4925                 goto unlock;
4926         }
4927
4928         if (persistent)
4929                 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4930         else
4931                 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4932
4933 unlock:
4934         hci_dev_unlock(hdev);
4935 }
4936
4937 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4938                                  struct sk_buff *skb)
4939 {
4940         struct hci_ev_clock_offset *ev = data;
4941         struct hci_conn *conn;
4942
4943         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4944
4945         hci_dev_lock(hdev);
4946
4947         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4948         if (conn && !ev->status) {
4949                 struct inquiry_entry *ie;
4950
4951                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4952                 if (ie) {
4953                         ie->data.clock_offset = ev->clock_offset;
4954                         ie->timestamp = jiffies;
4955                 }
4956         }
4957
4958         hci_dev_unlock(hdev);
4959 }
4960
4961 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4962                                     struct sk_buff *skb)
4963 {
4964         struct hci_ev_pkt_type_change *ev = data;
4965         struct hci_conn *conn;
4966
4967         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4968
4969         hci_dev_lock(hdev);
4970
4971         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4972         if (conn && !ev->status)
4973                 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4974
4975         hci_dev_unlock(hdev);
4976 }
4977
4978 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4979                                    struct sk_buff *skb)
4980 {
4981         struct hci_ev_pscan_rep_mode *ev = data;
4982         struct inquiry_entry *ie;
4983
4984         bt_dev_dbg(hdev, "");
4985
4986         hci_dev_lock(hdev);
4987
4988         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4989         if (ie) {
4990                 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4991                 ie->timestamp = jiffies;
4992         }
4993
4994         hci_dev_unlock(hdev);
4995 }
4996
4997 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4998                                              struct sk_buff *skb)
4999 {
5000         struct hci_ev_inquiry_result_rssi *ev = edata;
5001         struct inquiry_data data;
5002         int i;
5003
5004         bt_dev_dbg(hdev, "num_rsp %d", ev->num);
5005
5006         if (!ev->num)
5007                 return;
5008
5009         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5010                 return;
5011
5012         hci_dev_lock(hdev);
5013
5014         if (skb->len == array_size(ev->num,
5015                                    sizeof(struct inquiry_info_rssi_pscan))) {
5016                 struct inquiry_info_rssi_pscan *info;
5017
5018                 for (i = 0; i < ev->num; i++) {
5019                         u32 flags;
5020
5021                         info = hci_ev_skb_pull(hdev, skb,
5022                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
5023                                                sizeof(*info));
5024                         if (!info) {
5025                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5026                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5027                                 goto unlock;
5028                         }
5029
5030                         bacpy(&data.bdaddr, &info->bdaddr);
5031                         data.pscan_rep_mode     = info->pscan_rep_mode;
5032                         data.pscan_period_mode  = info->pscan_period_mode;
5033                         data.pscan_mode         = info->pscan_mode;
5034                         memcpy(data.dev_class, info->dev_class, 3);
5035                         data.clock_offset       = info->clock_offset;
5036                         data.rssi               = info->rssi;
5037                         data.ssp_mode           = 0x00;
5038
5039                         flags = hci_inquiry_cache_update(hdev, &data, false);
5040
5041                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5042                                           info->dev_class, info->rssi,
5043                                           flags, NULL, 0, NULL, 0, 0);
5044                 }
5045         } else if (skb->len == array_size(ev->num,
5046                                           sizeof(struct inquiry_info_rssi))) {
5047                 struct inquiry_info_rssi *info;
5048
5049                 for (i = 0; i < ev->num; i++) {
5050                         u32 flags;
5051
5052                         info = hci_ev_skb_pull(hdev, skb,
5053                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
5054                                                sizeof(*info));
5055                         if (!info) {
5056                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5057                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5058                                 goto unlock;
5059                         }
5060
5061                         bacpy(&data.bdaddr, &info->bdaddr);
5062                         data.pscan_rep_mode     = info->pscan_rep_mode;
5063                         data.pscan_period_mode  = info->pscan_period_mode;
5064                         data.pscan_mode         = 0x00;
5065                         memcpy(data.dev_class, info->dev_class, 3);
5066                         data.clock_offset       = info->clock_offset;
5067                         data.rssi               = info->rssi;
5068                         data.ssp_mode           = 0x00;
5069
5070                         flags = hci_inquiry_cache_update(hdev, &data, false);
5071
5072                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5073                                           info->dev_class, info->rssi,
5074                                           flags, NULL, 0, NULL, 0, 0);
5075                 }
5076         } else {
5077                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5078                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5079         }
5080 unlock:
5081         hci_dev_unlock(hdev);
5082 }
5083
5084 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
5085                                         struct sk_buff *skb)
5086 {
5087         struct hci_ev_remote_ext_features *ev = data;
5088         struct hci_conn *conn;
5089
5090         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5091
5092         hci_dev_lock(hdev);
5093
5094         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5095         if (!conn)
5096                 goto unlock;
5097
5098         if (ev->page < HCI_MAX_PAGES)
5099                 memcpy(conn->features[ev->page], ev->features, 8);
5100
5101         if (!ev->status && ev->page == 0x01) {
5102                 struct inquiry_entry *ie;
5103
5104                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
5105                 if (ie)
5106                         ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5107
5108                 if (ev->features[0] & LMP_HOST_SSP) {
5109                         set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5110                 } else {
5111                         /* It is mandatory by the Bluetooth specification that
5112                          * Extended Inquiry Results are only used when Secure
5113                          * Simple Pairing is enabled, but some devices violate
5114                          * this.
5115                          *
5116                          * To make these devices work, the internal SSP
5117                          * enabled flag needs to be cleared if the remote host
5118                          * features do not indicate SSP support */
5119                         clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5120                 }
5121
5122                 if (ev->features[0] & LMP_HOST_SC)
5123                         set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
5124         }
5125
5126         if (conn->state != BT_CONFIG)
5127                 goto unlock;
5128
5129         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
5130                 struct hci_cp_remote_name_req cp;
5131                 memset(&cp, 0, sizeof(cp));
5132                 bacpy(&cp.bdaddr, &conn->dst);
5133                 cp.pscan_rep_mode = 0x02;
5134                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
5135         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5136                 mgmt_device_connected(hdev, conn, NULL, 0);
5137
5138         if (!hci_outgoing_auth_needed(hdev, conn)) {
5139                 conn->state = BT_CONNECTED;
5140                 hci_connect_cfm(conn, ev->status);
5141                 hci_conn_drop(conn);
5142         }
5143
5144 unlock:
5145         hci_dev_unlock(hdev);
5146 }
5147
5148 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
5149                                        struct sk_buff *skb)
5150 {
5151         struct hci_ev_sync_conn_complete *ev = data;
5152         struct hci_conn *conn;
5153         u8 status = ev->status;
5154
5155         switch (ev->link_type) {
5156         case SCO_LINK:
5157         case ESCO_LINK:
5158                 break;
5159         default:
5160                 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
5161                  * for HCI_Synchronous_Connection_Complete is limited to
5162                  * either SCO or eSCO
5163                  */
5164                 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
5165                 return;
5166         }
5167
5168         bt_dev_dbg(hdev, "status 0x%2.2x", status);
5169
5170         hci_dev_lock(hdev);
5171
5172         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
5173         if (!conn) {
5174                 if (ev->link_type == ESCO_LINK)
5175                         goto unlock;
5176
5177                 /* When the link type in the event indicates SCO connection
5178                  * and lookup of the connection object fails, then check
5179                  * if an eSCO connection object exists.
5180                  *
5181                  * The core limits the synchronous connections to either
5182                  * SCO or eSCO. The eSCO connection is preferred and tried
5183                  * to be setup first and until successfully established,
5184                  * the link type will be hinted as eSCO.
5185                  */
5186                 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
5187                 if (!conn)
5188                         goto unlock;
5189         }
5190
5191         /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
5192          * Processing it more than once per connection can corrupt kernel memory.
5193          *
5194          * As the connection handle is set here for the first time, it indicates
5195          * whether the connection is already set up.
5196          */
5197         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
5198                 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5199                 goto unlock;
5200         }
5201
5202         switch (status) {
5203         case 0x00:
5204                 conn->handle = __le16_to_cpu(ev->handle);
5205                 if (conn->handle > HCI_CONN_HANDLE_MAX) {
5206                         bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
5207                                    conn->handle, HCI_CONN_HANDLE_MAX);
5208                         status = HCI_ERROR_INVALID_PARAMETERS;
5209                         conn->state = BT_CLOSED;
5210                         break;
5211                 }
5212
5213                 conn->state  = BT_CONNECTED;
5214                 conn->type   = ev->link_type;
5215
5216                 hci_debugfs_create_conn(conn);
5217                 hci_conn_add_sysfs(conn);
5218                 break;
5219
5220         case 0x10:      /* Connection Accept Timeout */
5221         case 0x0d:      /* Connection Rejected due to Limited Resources */
5222         case 0x11:      /* Unsupported Feature or Parameter Value */
5223         case 0x1c:      /* SCO interval rejected */
5224         case 0x1a:      /* Unsupported Remote Feature */
5225         case 0x1e:      /* Invalid LMP Parameters */
5226         case 0x1f:      /* Unspecified error */
5227         case 0x20:      /* Unsupported LMP Parameter value */
5228                 if (conn->out) {
5229                         conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5230                                         (hdev->esco_type & EDR_ESCO_MASK);
5231                         if (hci_setup_sync(conn, conn->link->handle))
5232                                 goto unlock;
5233                 }
5234                 fallthrough;
5235
5236         default:
5237                 conn->state = BT_CLOSED;
5238                 break;
5239         }
5240
5241         bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5242         /* Notify only in case of SCO over HCI transport data path which
5243          * is zero and non-zero value shall be non-HCI transport data path
5244          */
5245         if (conn->codec.data_path == 0 && hdev->notify) {
5246                 switch (ev->air_mode) {
5247                 case 0x02:
5248                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5249                         break;
5250                 case 0x03:
5251                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5252                         break;
5253                 }
5254         }
5255
5256         hci_connect_cfm(conn, status);
5257         if (status)
5258                 hci_conn_del(conn);
5259
5260 unlock:
5261         hci_dev_unlock(hdev);
5262 }
5263
5264 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5265 {
5266         size_t parsed = 0;
5267
5268         while (parsed < eir_len) {
5269                 u8 field_len = eir[0];
5270
5271                 if (field_len == 0)
5272                         return parsed;
5273
5274                 parsed += field_len + 1;
5275                 eir += field_len + 1;
5276         }
5277
5278         return eir_len;
5279 }
5280
5281 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5282                                             struct sk_buff *skb)
5283 {
5284         struct hci_ev_ext_inquiry_result *ev = edata;
5285         struct inquiry_data data;
5286         size_t eir_len;
5287         int i;
5288
5289         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5290                              flex_array_size(ev, info, ev->num)))
5291                 return;
5292
5293         bt_dev_dbg(hdev, "num %d", ev->num);
5294
5295         if (!ev->num)
5296                 return;
5297
5298         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5299                 return;
5300
5301         hci_dev_lock(hdev);
5302
5303         for (i = 0; i < ev->num; i++) {
5304                 struct extended_inquiry_info *info = &ev->info[i];
5305                 u32 flags;
5306                 bool name_known;
5307
5308                 bacpy(&data.bdaddr, &info->bdaddr);
5309                 data.pscan_rep_mode     = info->pscan_rep_mode;
5310                 data.pscan_period_mode  = info->pscan_period_mode;
5311                 data.pscan_mode         = 0x00;
5312                 memcpy(data.dev_class, info->dev_class, 3);
5313                 data.clock_offset       = info->clock_offset;
5314                 data.rssi               = info->rssi;
5315                 data.ssp_mode           = 0x01;
5316
5317                 if (hci_dev_test_flag(hdev, HCI_MGMT))
5318                         name_known = eir_get_data(info->data,
5319                                                   sizeof(info->data),
5320                                                   EIR_NAME_COMPLETE, NULL);
5321                 else
5322                         name_known = true;
5323
5324                 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5325
5326                 eir_len = eir_get_length(info->data, sizeof(info->data));
5327
5328                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5329                                   info->dev_class, info->rssi,
5330                                   flags, info->data, eir_len, NULL, 0, 0);
5331         }
5332
5333         hci_dev_unlock(hdev);
5334 }
5335
5336 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5337                                          struct sk_buff *skb)
5338 {
5339         struct hci_ev_key_refresh_complete *ev = data;
5340         struct hci_conn *conn;
5341
5342         bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5343                    __le16_to_cpu(ev->handle));
5344
5345         hci_dev_lock(hdev);
5346
5347         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5348         if (!conn)
5349                 goto unlock;
5350
5351         /* For BR/EDR the necessary steps are taken through the
5352          * auth_complete event.
5353          */
5354         if (conn->type != LE_LINK)
5355                 goto unlock;
5356
5357         if (!ev->status)
5358                 conn->sec_level = conn->pending_sec_level;
5359
5360         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5361
5362         if (ev->status && conn->state == BT_CONNECTED) {
5363                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5364                 hci_conn_drop(conn);
5365                 goto unlock;
5366         }
5367
5368         if (conn->state == BT_CONFIG) {
5369                 if (!ev->status)
5370                         conn->state = BT_CONNECTED;
5371
5372                 hci_connect_cfm(conn, ev->status);
5373                 hci_conn_drop(conn);
5374         } else {
5375                 hci_auth_cfm(conn, ev->status);
5376
5377                 hci_conn_hold(conn);
5378                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5379                 hci_conn_drop(conn);
5380         }
5381
5382 unlock:
5383         hci_dev_unlock(hdev);
5384 }
5385
5386 static u8 hci_get_auth_req(struct hci_conn *conn)
5387 {
5388 #ifdef TIZEN_BT
5389         if (conn->remote_auth == HCI_AT_GENERAL_BONDING_MITM) {
5390                 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5391                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5392                         return HCI_AT_GENERAL_BONDING_MITM;
5393         }
5394 #endif
5395
5396         /* If remote requests no-bonding follow that lead */
5397         if (conn->remote_auth == HCI_AT_NO_BONDING ||
5398             conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5399                 return conn->remote_auth | (conn->auth_type & 0x01);
5400
5401         /* If both remote and local have enough IO capabilities, require
5402          * MITM protection
5403          */
5404         if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5405             conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5406                 return conn->remote_auth | 0x01;
5407
5408         /* No MITM protection possible so ignore remote requirement */
5409         return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5410 }
5411
5412 static u8 bredr_oob_data_present(struct hci_conn *conn)
5413 {
5414         struct hci_dev *hdev = conn->hdev;
5415         struct oob_data *data;
5416
5417         data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5418         if (!data)
5419                 return 0x00;
5420
5421         if (bredr_sc_enabled(hdev)) {
5422                 /* When Secure Connections is enabled, then just
5423                  * return the present value stored with the OOB
5424                  * data. The stored value contains the right present
5425                  * information. However it can only be trusted when
5426                  * not in Secure Connection Only mode.
5427                  */
5428                 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5429                         return data->present;
5430
5431                 /* When Secure Connections Only mode is enabled, then
5432                  * the P-256 values are required. If they are not
5433                  * available, then do not declare that OOB data is
5434                  * present.
5435                  */
5436                 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
5437                     !memcmp(data->hash256, ZERO_KEY, 16))
5438                         return 0x00;
5439
5440                 return 0x02;
5441         }
5442
5443         /* When Secure Connections is not enabled or actually
5444          * not supported by the hardware, then check that if
5445          * P-192 data values are present.
5446          */
5447         if (!memcmp(data->rand192, ZERO_KEY, 16) ||
5448             !memcmp(data->hash192, ZERO_KEY, 16))
5449                 return 0x00;
5450
5451         return 0x01;
5452 }
5453
5454 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5455                                     struct sk_buff *skb)
5456 {
5457         struct hci_ev_io_capa_request *ev = data;
5458         struct hci_conn *conn;
5459
5460         bt_dev_dbg(hdev, "");
5461
5462         hci_dev_lock(hdev);
5463
5464         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5465         if (!conn)
5466                 goto unlock;
5467
5468         hci_conn_hold(conn);
5469
5470         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5471                 goto unlock;
5472
5473         /* Allow pairing if we're pairable, the initiators of the
5474          * pairing or if the remote is not requesting bonding.
5475          */
5476         if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5477             test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5478             (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5479                 struct hci_cp_io_capability_reply cp;
5480
5481                 bacpy(&cp.bdaddr, &ev->bdaddr);
5482                 /* Change the IO capability from KeyboardDisplay
5483                  * to DisplayYesNo as it is not supported by BT spec. */
5484                 cp.capability = (conn->io_capability == 0x04) ?
5485                                 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5486
5487                 /* If we are initiators, there is no remote information yet */
5488                 if (conn->remote_auth == 0xff) {
5489                         /* Request MITM protection if our IO caps allow it
5490                          * except for the no-bonding case.
5491                          */
5492                         if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5493                             conn->auth_type != HCI_AT_NO_BONDING)
5494                                 conn->auth_type |= 0x01;
5495                 } else {
5496                         conn->auth_type = hci_get_auth_req(conn);
5497                 }
5498
5499                 /* If we're not bondable, force one of the non-bondable
5500                  * authentication requirement values.
5501                  */
5502                 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5503                         conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5504
5505                 cp.authentication = conn->auth_type;
5506                 cp.oob_data = bredr_oob_data_present(conn);
5507
5508                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5509                              sizeof(cp), &cp);
5510         } else {
5511                 struct hci_cp_io_capability_neg_reply cp;
5512
5513                 bacpy(&cp.bdaddr, &ev->bdaddr);
5514                 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5515
5516                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5517                              sizeof(cp), &cp);
5518         }
5519
5520 unlock:
5521         hci_dev_unlock(hdev);
5522 }
5523
5524 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5525                                   struct sk_buff *skb)
5526 {
5527         struct hci_ev_io_capa_reply *ev = data;
5528         struct hci_conn *conn;
5529
5530         bt_dev_dbg(hdev, "");
5531
5532         hci_dev_lock(hdev);
5533
5534         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5535         if (!conn)
5536                 goto unlock;
5537
5538         conn->remote_cap = ev->capability;
5539         conn->remote_auth = ev->authentication;
5540
5541 unlock:
5542         hci_dev_unlock(hdev);
5543 }
5544
5545 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5546                                          struct sk_buff *skb)
5547 {
5548         struct hci_ev_user_confirm_req *ev = data;
5549         int loc_mitm, rem_mitm, confirm_hint = 0;
5550         struct hci_conn *conn;
5551
5552         bt_dev_dbg(hdev, "");
5553
5554         hci_dev_lock(hdev);
5555
5556         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5557                 goto unlock;
5558
5559         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5560         if (!conn)
5561                 goto unlock;
5562
5563         loc_mitm = (conn->auth_type & 0x01);
5564         rem_mitm = (conn->remote_auth & 0x01);
5565
5566         /* If we require MITM but the remote device can't provide that
5567          * (it has NoInputNoOutput) then reject the confirmation
5568          * request. We check the security level here since it doesn't
5569          * necessarily match conn->auth_type.
5570          */
5571         if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5572             conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5573                 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5574                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5575                              sizeof(ev->bdaddr), &ev->bdaddr);
5576                 goto unlock;
5577         }
5578
5579         /* If no side requires MITM protection; auto-accept */
5580         if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5581             (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5582
5583                 /* If we're not the initiators request authorization to
5584                  * proceed from user space (mgmt_user_confirm with
5585                  * confirm_hint set to 1). The exception is if neither
5586                  * side had MITM or if the local IO capability is
5587                  * NoInputNoOutput, in which case we do auto-accept
5588                  */
5589                 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5590                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5591                     (loc_mitm || rem_mitm)) {
5592                         bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5593                         confirm_hint = 1;
5594                         goto confirm;
5595                 }
5596
5597                 /* If there already exists link key in local host, leave the
5598                  * decision to user space since the remote device could be
5599                  * legitimate or malicious.
5600                  */
5601                 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5602                         bt_dev_dbg(hdev, "Local host already has link key");
5603                         confirm_hint = 1;
5604                         goto confirm;
5605                 }
5606
5607                 BT_DBG("Auto-accept of user confirmation with %ums delay",
5608                        hdev->auto_accept_delay);
5609
5610                 if (hdev->auto_accept_delay > 0) {
5611                         int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5612                         queue_delayed_work(conn->hdev->workqueue,
5613                                            &conn->auto_accept_work, delay);
5614                         goto unlock;
5615                 }
5616
5617                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5618                              sizeof(ev->bdaddr), &ev->bdaddr);
5619                 goto unlock;
5620         }
5621
5622 confirm:
5623         mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5624                                   le32_to_cpu(ev->passkey), confirm_hint);
5625
5626 unlock:
5627         hci_dev_unlock(hdev);
5628 }
5629
5630 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5631                                          struct sk_buff *skb)
5632 {
5633         struct hci_ev_user_passkey_req *ev = data;
5634
5635         bt_dev_dbg(hdev, "");
5636
5637         if (hci_dev_test_flag(hdev, HCI_MGMT))
5638                 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5639 }
5640
5641 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5642                                         struct sk_buff *skb)
5643 {
5644         struct hci_ev_user_passkey_notify *ev = data;
5645         struct hci_conn *conn;
5646
5647         bt_dev_dbg(hdev, "");
5648
5649         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5650         if (!conn)
5651                 return;
5652
5653         conn->passkey_notify = __le32_to_cpu(ev->passkey);
5654         conn->passkey_entered = 0;
5655
5656         if (hci_dev_test_flag(hdev, HCI_MGMT))
5657                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5658                                          conn->dst_type, conn->passkey_notify,
5659                                          conn->passkey_entered);
5660 }
5661
5662 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5663                                     struct sk_buff *skb)
5664 {
5665         struct hci_ev_keypress_notify *ev = data;
5666         struct hci_conn *conn;
5667
5668         bt_dev_dbg(hdev, "");
5669
5670         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5671         if (!conn)
5672                 return;
5673
5674         switch (ev->type) {
5675         case HCI_KEYPRESS_STARTED:
5676                 conn->passkey_entered = 0;
5677                 return;
5678
5679         case HCI_KEYPRESS_ENTERED:
5680                 conn->passkey_entered++;
5681                 break;
5682
5683         case HCI_KEYPRESS_ERASED:
5684                 conn->passkey_entered--;
5685                 break;
5686
5687         case HCI_KEYPRESS_CLEARED:
5688                 conn->passkey_entered = 0;
5689                 break;
5690
5691         case HCI_KEYPRESS_COMPLETED:
5692                 return;
5693         }
5694
5695         if (hci_dev_test_flag(hdev, HCI_MGMT))
5696                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5697                                          conn->dst_type, conn->passkey_notify,
5698                                          conn->passkey_entered);
5699 }
5700
5701 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5702                                          struct sk_buff *skb)
5703 {
5704         struct hci_ev_simple_pair_complete *ev = data;
5705         struct hci_conn *conn;
5706
5707         bt_dev_dbg(hdev, "");
5708
5709         hci_dev_lock(hdev);
5710
5711         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5712         if (!conn)
5713                 goto unlock;
5714
5715         /* Reset the authentication requirement to unknown */
5716         conn->remote_auth = 0xff;
5717
5718         /* To avoid duplicate auth_failed events to user space we check
5719          * the HCI_CONN_AUTH_PEND flag which will be set if we
5720          * initiated the authentication. A traditional auth_complete
5721          * event gets always produced as initiator and is also mapped to
5722          * the mgmt_auth_failed event */
5723         if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5724                 mgmt_auth_failed(conn, ev->status);
5725
5726         hci_conn_drop(conn);
5727
5728 unlock:
5729         hci_dev_unlock(hdev);
5730 }
5731
5732 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5733                                          struct sk_buff *skb)
5734 {
5735         struct hci_ev_remote_host_features *ev = data;
5736         struct inquiry_entry *ie;
5737         struct hci_conn *conn;
5738
5739         bt_dev_dbg(hdev, "");
5740
5741         hci_dev_lock(hdev);
5742
5743         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5744         if (conn)
5745                 memcpy(conn->features[1], ev->features, 8);
5746
5747         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5748         if (ie)
5749                 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5750
5751         hci_dev_unlock(hdev);
5752 }
5753
5754 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5755                                             struct sk_buff *skb)
5756 {
5757         struct hci_ev_remote_oob_data_request *ev = edata;
5758         struct oob_data *data;
5759
5760         bt_dev_dbg(hdev, "");
5761
5762         hci_dev_lock(hdev);
5763
5764         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5765                 goto unlock;
5766
5767         data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5768         if (!data) {
5769                 struct hci_cp_remote_oob_data_neg_reply cp;
5770
5771                 bacpy(&cp.bdaddr, &ev->bdaddr);
5772                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5773                              sizeof(cp), &cp);
5774                 goto unlock;
5775         }
5776
5777         if (bredr_sc_enabled(hdev)) {
5778                 struct hci_cp_remote_oob_ext_data_reply cp;
5779
5780                 bacpy(&cp.bdaddr, &ev->bdaddr);
5781                 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5782                         memset(cp.hash192, 0, sizeof(cp.hash192));
5783                         memset(cp.rand192, 0, sizeof(cp.rand192));
5784                 } else {
5785                         memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5786                         memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5787                 }
5788                 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5789                 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5790
5791                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5792                              sizeof(cp), &cp);
5793         } else {
5794                 struct hci_cp_remote_oob_data_reply cp;
5795
5796                 bacpy(&cp.bdaddr, &ev->bdaddr);
5797                 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5798                 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5799
5800                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5801                              sizeof(cp), &cp);
5802         }
5803
5804 unlock:
5805         hci_dev_unlock(hdev);
5806 }
5807
5808 #if IS_ENABLED(CONFIG_BT_HS)
5809 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5810                                   struct sk_buff *skb)
5811 {
5812         struct hci_ev_channel_selected *ev = data;
5813         struct hci_conn *hcon;
5814
5815         bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5816
5817         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5818         if (!hcon)
5819                 return;
5820
5821         amp_read_loc_assoc_final_data(hdev, hcon);
5822 }
5823
5824 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5825                                       struct sk_buff *skb)
5826 {
5827         struct hci_ev_phy_link_complete *ev = data;
5828         struct hci_conn *hcon, *bredr_hcon;
5829
5830         bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5831                    ev->status);
5832
5833         hci_dev_lock(hdev);
5834
5835         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5836         if (!hcon)
5837                 goto unlock;
5838
5839         if (!hcon->amp_mgr)
5840                 goto unlock;
5841
5842         if (ev->status) {
5843                 hci_conn_del(hcon);
5844                 goto unlock;
5845         }
5846
5847         bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5848
5849         hcon->state = BT_CONNECTED;
5850         bacpy(&hcon->dst, &bredr_hcon->dst);
5851
5852         hci_conn_hold(hcon);
5853         hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5854         hci_conn_drop(hcon);
5855
5856         hci_debugfs_create_conn(hcon);
5857         hci_conn_add_sysfs(hcon);
5858
5859         amp_physical_cfm(bredr_hcon, hcon);
5860
5861 unlock:
5862         hci_dev_unlock(hdev);
5863 }
5864
5865 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5866                                      struct sk_buff *skb)
5867 {
5868         struct hci_ev_logical_link_complete *ev = data;
5869         struct hci_conn *hcon;
5870         struct hci_chan *hchan;
5871         struct amp_mgr *mgr;
5872
5873         bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5874                    le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5875
5876         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5877         if (!hcon)
5878                 return;
5879
5880         /* Create AMP hchan */
5881         hchan = hci_chan_create(hcon);
5882         if (!hchan)
5883                 return;
5884
5885         hchan->handle = le16_to_cpu(ev->handle);
5886         hchan->amp = true;
5887
5888         BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5889
5890         mgr = hcon->amp_mgr;
5891         if (mgr && mgr->bredr_chan) {
5892                 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5893
5894                 l2cap_chan_lock(bredr_chan);
5895
5896                 bredr_chan->conn->mtu = hdev->block_mtu;
5897                 l2cap_logical_cfm(bredr_chan, hchan, 0);
5898                 hci_conn_hold(hcon);
5899
5900                 l2cap_chan_unlock(bredr_chan);
5901         }
5902 }
5903
5904 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5905                                              struct sk_buff *skb)
5906 {
5907         struct hci_ev_disconn_logical_link_complete *ev = data;
5908         struct hci_chan *hchan;
5909
5910         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5911                    le16_to_cpu(ev->handle), ev->status);
5912
5913         if (ev->status)
5914                 return;
5915
5916         hci_dev_lock(hdev);
5917
5918         hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5919         if (!hchan || !hchan->amp)
5920                 goto unlock;
5921
5922         amp_destroy_logical_link(hchan, ev->reason);
5923
5924 unlock:
5925         hci_dev_unlock(hdev);
5926 }
5927
5928 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5929                                              struct sk_buff *skb)
5930 {
5931         struct hci_ev_disconn_phy_link_complete *ev = data;
5932         struct hci_conn *hcon;
5933
5934         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5935
5936         if (ev->status)
5937                 return;
5938
5939         hci_dev_lock(hdev);
5940
5941         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5942         if (hcon && hcon->type == AMP_LINK) {
5943                 hcon->state = BT_CLOSED;
5944                 hci_disconn_cfm(hcon, ev->reason);
5945                 hci_conn_del(hcon);
5946         }
5947
5948         hci_dev_unlock(hdev);
5949 }
5950 #endif
5951
5952 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5953                                 u8 bdaddr_type, bdaddr_t *local_rpa)
5954 {
5955         if (conn->out) {
5956                 conn->dst_type = bdaddr_type;
5957                 conn->resp_addr_type = bdaddr_type;
5958                 bacpy(&conn->resp_addr, bdaddr);
5959
5960                 /* Check if the controller has set a Local RPA then it must be
5961                  * used instead or hdev->rpa.
5962                  */
5963                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5964                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5965                         bacpy(&conn->init_addr, local_rpa);
5966                 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5967                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5968                         bacpy(&conn->init_addr, &conn->hdev->rpa);
5969                 } else {
5970                         hci_copy_identity_address(conn->hdev, &conn->init_addr,
5971                                                   &conn->init_addr_type);
5972                 }
5973         } else {
5974                 conn->resp_addr_type = conn->hdev->adv_addr_type;
5975                 /* Check if the controller has set a Local RPA then it must be
5976                  * used instead or hdev->rpa.
5977                  */
5978                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5979                         conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5980                         bacpy(&conn->resp_addr, local_rpa);
5981                 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5982                         /* In case of ext adv, resp_addr will be updated in
5983                          * Adv Terminated event.
5984                          */
5985                         if (!ext_adv_capable(conn->hdev))
5986                                 bacpy(&conn->resp_addr,
5987                                       &conn->hdev->random_addr);
5988                 } else {
5989                         bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5990                 }
5991
5992                 conn->init_addr_type = bdaddr_type;
5993                 bacpy(&conn->init_addr, bdaddr);
5994
5995                 /* For incoming connections, set the default minimum
5996                  * and maximum connection interval. They will be used
5997                  * to check if the parameters are in range and if not
5998                  * trigger the connection update procedure.
5999                  */
6000                 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
6001                 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
6002         }
6003 }
6004
6005 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
6006                                  bdaddr_t *bdaddr, u8 bdaddr_type,
6007                                  bdaddr_t *local_rpa, u8 role, u16 handle,
6008                                  u16 interval, u16 latency,
6009                                  u16 supervision_timeout)
6010 {
6011         struct hci_conn_params *params;
6012         struct hci_conn *conn;
6013         struct smp_irk *irk;
6014         u8 addr_type;
6015
6016         hci_dev_lock(hdev);
6017
6018         /* All controllers implicitly stop advertising in the event of a
6019          * connection, so ensure that the state bit is cleared.
6020          */
6021         hci_dev_clear_flag(hdev, HCI_LE_ADV);
6022
6023         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
6024         if (!conn) {
6025                 /* In case of error status and there is no connection pending
6026                  * just unlock as there is nothing to cleanup.
6027                  */
6028                 if (status)
6029                         goto unlock;
6030
6031                 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role);
6032                 if (!conn) {
6033                         bt_dev_err(hdev, "no memory for new connection");
6034                         goto unlock;
6035                 }
6036
6037                 conn->dst_type = bdaddr_type;
6038
6039                 /* If we didn't have a hci_conn object previously
6040                  * but we're in central role this must be something
6041                  * initiated using an accept list. Since accept list based
6042                  * connections are not "first class citizens" we don't
6043                  * have full tracking of them. Therefore, we go ahead
6044                  * with a "best effort" approach of determining the
6045                  * initiator address based on the HCI_PRIVACY flag.
6046                  */
6047                 if (conn->out) {
6048                         conn->resp_addr_type = bdaddr_type;
6049                         bacpy(&conn->resp_addr, bdaddr);
6050                         if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
6051                                 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
6052                                 bacpy(&conn->init_addr, &hdev->rpa);
6053                         } else {
6054                                 hci_copy_identity_address(hdev,
6055                                                           &conn->init_addr,
6056                                                           &conn->init_addr_type);
6057                         }
6058                 }
6059         } else {
6060 #ifdef TIZEN_BT
6061                 /* LE auto connect */
6062                 bacpy(&conn->dst, bdaddr);
6063 #endif
6064                 cancel_delayed_work(&conn->le_conn_timeout);
6065         }
6066
6067         /* The HCI_LE_Connection_Complete event is only sent once per connection.
6068          * Processing it more than once per connection can corrupt kernel memory.
6069          *
6070          * As the connection handle is set here for the first time, it indicates
6071          * whether the connection is already set up.
6072          */
6073         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
6074                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
6075                 goto unlock;
6076         }
6077
6078         le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
6079
6080         /* Lookup the identity address from the stored connection
6081          * address and address type.
6082          *
6083          * When establishing connections to an identity address, the
6084          * connection procedure will store the resolvable random
6085          * address first. Now if it can be converted back into the
6086          * identity address, start using the identity address from
6087          * now on.
6088          */
6089         irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
6090         if (irk) {
6091                 bacpy(&conn->dst, &irk->bdaddr);
6092                 conn->dst_type = irk->addr_type;
6093         }
6094
6095         conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
6096
6097         if (handle > HCI_CONN_HANDLE_MAX) {
6098                 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle,
6099                            HCI_CONN_HANDLE_MAX);
6100                 status = HCI_ERROR_INVALID_PARAMETERS;
6101         }
6102
6103         /* All connection failure handling is taken care of by the
6104          * hci_conn_failed function which is triggered by the HCI
6105          * request completion callbacks used for connecting.
6106          */
6107         if (status)
6108                 goto unlock;
6109
6110         /* Drop the connection if it has been aborted */
6111         if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
6112                 hci_conn_drop(conn);
6113                 goto unlock;
6114         }
6115
6116         if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
6117                 addr_type = BDADDR_LE_PUBLIC;
6118         else
6119                 addr_type = BDADDR_LE_RANDOM;
6120
6121         /* Drop the connection if the device is blocked */
6122         if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
6123                 hci_conn_drop(conn);
6124                 goto unlock;
6125         }
6126
6127         if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
6128                 mgmt_device_connected(hdev, conn, NULL, 0);
6129
6130         conn->sec_level = BT_SECURITY_LOW;
6131         conn->handle = handle;
6132         conn->state = BT_CONFIG;
6133
6134         /* Store current advertising instance as connection advertising instance
6135          * when sotfware rotation is in use so it can be re-enabled when
6136          * disconnected.
6137          */
6138         if (!ext_adv_capable(hdev))
6139                 conn->adv_instance = hdev->cur_adv_instance;
6140
6141         conn->le_conn_interval = interval;
6142         conn->le_conn_latency = latency;
6143         conn->le_supv_timeout = supervision_timeout;
6144
6145         hci_debugfs_create_conn(conn);
6146         hci_conn_add_sysfs(conn);
6147
6148         /* The remote features procedure is defined for central
6149          * role only. So only in case of an initiated connection
6150          * request the remote features.
6151          *
6152          * If the local controller supports peripheral-initiated features
6153          * exchange, then requesting the remote features in peripheral
6154          * role is possible. Otherwise just transition into the
6155          * connected state without requesting the remote features.
6156          */
6157         if (conn->out ||
6158             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
6159                 struct hci_cp_le_read_remote_features cp;
6160
6161                 cp.handle = __cpu_to_le16(conn->handle);
6162
6163                 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
6164                              sizeof(cp), &cp);
6165
6166                 hci_conn_hold(conn);
6167         } else {
6168                 conn->state = BT_CONNECTED;
6169                 hci_connect_cfm(conn, status);
6170         }
6171
6172         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
6173                                            conn->dst_type);
6174         if (params) {
6175                 list_del_init(&params->action);
6176                 if (params->conn) {
6177                         hci_conn_drop(params->conn);
6178                         hci_conn_put(params->conn);
6179                         params->conn = NULL;
6180                 }
6181         }
6182
6183 unlock:
6184         hci_update_passive_scan(hdev);
6185         hci_dev_unlock(hdev);
6186 }
6187
6188 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
6189                                      struct sk_buff *skb)
6190 {
6191         struct hci_ev_le_conn_complete *ev = data;
6192
6193         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6194
6195         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6196                              NULL, ev->role, le16_to_cpu(ev->handle),
6197                              le16_to_cpu(ev->interval),
6198                              le16_to_cpu(ev->latency),
6199                              le16_to_cpu(ev->supervision_timeout));
6200 }
6201
6202 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
6203                                          struct sk_buff *skb)
6204 {
6205         struct hci_ev_le_enh_conn_complete *ev = data;
6206
6207         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6208
6209         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6210                              &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
6211                              le16_to_cpu(ev->interval),
6212                              le16_to_cpu(ev->latency),
6213                              le16_to_cpu(ev->supervision_timeout));
6214 }
6215
6216 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6217                                     struct sk_buff *skb)
6218 {
6219         struct hci_evt_le_ext_adv_set_term *ev = data;
6220         struct hci_conn *conn;
6221         struct adv_info *adv, *n;
6222
6223         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6224
6225         /* The Bluetooth Core 5.3 specification clearly states that this event
6226          * shall not be sent when the Host disables the advertising set. So in
6227          * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6228          *
6229          * When the Host disables an advertising set, all cleanup is done via
6230          * its command callback and not needed to be duplicated here.
6231          */
6232         if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6233                 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6234                 return;
6235         }
6236
6237         hci_dev_lock(hdev);
6238
6239         adv = hci_find_adv_instance(hdev, ev->handle);
6240
6241         if (ev->status) {
6242                 if (!adv)
6243                         goto unlock;
6244
6245                 /* Remove advertising as it has been terminated */
6246                 hci_remove_adv_instance(hdev, ev->handle);
6247                 mgmt_advertising_removed(NULL, hdev, ev->handle);
6248
6249                 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6250                         if (adv->enabled)
6251                                 goto unlock;
6252                 }
6253
6254                 /* We are no longer advertising, clear HCI_LE_ADV */
6255                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6256                 goto unlock;
6257         }
6258
6259         if (adv)
6260                 adv->enabled = false;
6261
6262         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6263         if (conn) {
6264                 /* Store handle in the connection so the correct advertising
6265                  * instance can be re-enabled when disconnected.
6266                  */
6267                 conn->adv_instance = ev->handle;
6268
6269                 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6270                     bacmp(&conn->resp_addr, BDADDR_ANY))
6271                         goto unlock;
6272
6273                 if (!ev->handle) {
6274                         bacpy(&conn->resp_addr, &hdev->random_addr);
6275                         goto unlock;
6276                 }
6277
6278                 if (adv)
6279                         bacpy(&conn->resp_addr, &adv->random_addr);
6280         }
6281
6282 unlock:
6283         hci_dev_unlock(hdev);
6284 }
6285
6286 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6287                                             struct sk_buff *skb)
6288 {
6289         struct hci_ev_le_conn_update_complete *ev = data;
6290         struct hci_conn *conn;
6291
6292         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6293
6294         if (ev->status)
6295                 return;
6296
6297         hci_dev_lock(hdev);
6298
6299         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6300         if (conn) {
6301 #ifdef TIZEN_BT
6302                 if (ev->status) {
6303                         hci_dev_unlock(hdev);
6304                         mgmt_le_conn_update_failed(hdev, &conn->dst,
6305                                 conn->type, conn->dst_type, ev->status);
6306                         return;
6307                 }
6308 #endif
6309                 conn->le_conn_interval = le16_to_cpu(ev->interval);
6310                 conn->le_conn_latency = le16_to_cpu(ev->latency);
6311                 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6312         }
6313
6314         hci_dev_unlock(hdev);
6315
6316 #ifdef TIZEN_BT
6317         mgmt_le_conn_updated(hdev, &conn->dst, conn->type,
6318                                 conn->dst_type, conn->le_conn_interval,
6319                                 conn->le_conn_latency, conn->le_supv_timeout);
6320 #endif
6321 }
6322
6323 /* This function requires the caller holds hdev->lock */
6324 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6325                                               bdaddr_t *addr,
6326                                               u8 addr_type, bool addr_resolved,
6327                                               u8 adv_type)
6328 {
6329         struct hci_conn *conn;
6330         struct hci_conn_params *params;
6331
6332         /* If the event is not connectable don't proceed further */
6333         if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6334                 return NULL;
6335
6336         /* Ignore if the device is blocked or hdev is suspended */
6337         if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6338             hdev->suspended)
6339                 return NULL;
6340
6341         /* Most controller will fail if we try to create new connections
6342          * while we have an existing one in peripheral role.
6343          */
6344         if (hdev->conn_hash.le_num_peripheral > 0 &&
6345             (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6346              !(hdev->le_states[3] & 0x10)))
6347                 return NULL;
6348
6349         /* If we're not connectable only connect devices that we have in
6350          * our pend_le_conns list.
6351          */
6352         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6353                                            addr_type);
6354         if (!params)
6355                 return NULL;
6356
6357         if (!params->explicit_connect) {
6358                 switch (params->auto_connect) {
6359                 case HCI_AUTO_CONN_DIRECT:
6360                         /* Only devices advertising with ADV_DIRECT_IND are
6361                          * triggering a connection attempt. This is allowing
6362                          * incoming connections from peripheral devices.
6363                          */
6364                         if (adv_type != LE_ADV_DIRECT_IND)
6365                                 return NULL;
6366                         break;
6367                 case HCI_AUTO_CONN_ALWAYS:
6368                         /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6369                          * are triggering a connection attempt. This means
6370                          * that incoming connections from peripheral device are
6371                          * accepted and also outgoing connections to peripheral
6372                          * devices are established when found.
6373                          */
6374                         break;
6375                 default:
6376                         return NULL;
6377                 }
6378         }
6379
6380         conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6381                               BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6382                               HCI_ROLE_MASTER);
6383         if (!IS_ERR(conn)) {
6384                 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6385                  * by higher layer that tried to connect, if no then
6386                  * store the pointer since we don't really have any
6387                  * other owner of the object besides the params that
6388                  * triggered it. This way we can abort the connection if
6389                  * the parameters get removed and keep the reference
6390                  * count consistent once the connection is established.
6391                  */
6392
6393                 if (!params->explicit_connect)
6394                         params->conn = hci_conn_get(conn);
6395
6396                 return conn;
6397         }
6398
6399         switch (PTR_ERR(conn)) {
6400         case -EBUSY:
6401                 /* If hci_connect() returns -EBUSY it means there is already
6402                  * an LE connection attempt going on. Since controllers don't
6403                  * support more than one connection attempt at the time, we
6404                  * don't consider this an error case.
6405                  */
6406                 break;
6407         default:
6408                 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6409                 return NULL;
6410         }
6411
6412         return NULL;
6413 }
6414
6415 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6416                                u8 bdaddr_type, bdaddr_t *direct_addr,
6417                                u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6418                                bool ext_adv, bool ctl_time, u64 instant)
6419 {
6420         struct discovery_state *d = &hdev->discovery;
6421         struct smp_irk *irk;
6422         struct hci_conn *conn;
6423         bool match, bdaddr_resolved;
6424         u32 flags;
6425         u8 *ptr;
6426
6427         switch (type) {
6428         case LE_ADV_IND:
6429         case LE_ADV_DIRECT_IND:
6430         case LE_ADV_SCAN_IND:
6431         case LE_ADV_NONCONN_IND:
6432         case LE_ADV_SCAN_RSP:
6433                 break;
6434         default:
6435                 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6436                                        "type: 0x%02x", type);
6437                 return;
6438         }
6439
6440         if (!ext_adv && len > HCI_MAX_AD_LENGTH) {
6441                 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes");
6442                 return;
6443         }
6444
6445         /* Find the end of the data in case the report contains padded zero
6446          * bytes at the end causing an invalid length value.
6447          *
6448          * When data is NULL, len is 0 so there is no need for extra ptr
6449          * check as 'ptr < data + 0' is already false in such case.
6450          */
6451         for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6452                 if (ptr + 1 + *ptr > data + len)
6453                         break;
6454         }
6455
6456         /* Adjust for actual length. This handles the case when remote
6457          * device is advertising with incorrect data length.
6458          */
6459         len = ptr - data;
6460
6461         /* If the direct address is present, then this report is from
6462          * a LE Direct Advertising Report event. In that case it is
6463          * important to see if the address is matching the local
6464          * controller address.
6465          */
6466         if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6467                 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6468                                                   &bdaddr_resolved);
6469
6470                 /* Only resolvable random addresses are valid for these
6471                  * kind of reports and others can be ignored.
6472                  */
6473                 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6474                         return;
6475
6476                 /* If the controller is not using resolvable random
6477                  * addresses, then this report can be ignored.
6478                  */
6479                 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6480                         return;
6481
6482                 /* If the local IRK of the controller does not match
6483                  * with the resolvable random address provided, then
6484                  * this report can be ignored.
6485                  */
6486                 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6487                         return;
6488         }
6489
6490         /* Check if we need to convert to identity address */
6491         irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6492         if (irk) {
6493                 bdaddr = &irk->bdaddr;
6494                 bdaddr_type = irk->addr_type;
6495         }
6496
6497         bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6498
6499         /* Check if we have been requested to connect to this device.
6500          *
6501          * direct_addr is set only for directed advertising reports (it is NULL
6502          * for advertising reports) and is already verified to be RPA above.
6503          */
6504         conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6505                                      type);
6506         if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) {
6507                 /* Store report for later inclusion by
6508                  * mgmt_device_connected
6509                  */
6510                 memcpy(conn->le_adv_data, data, len);
6511                 conn->le_adv_data_len = len;
6512         }
6513
6514         if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6515                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6516         else
6517                 flags = 0;
6518
6519         /* All scan results should be sent up for Mesh systems */
6520         if (hci_dev_test_flag(hdev, HCI_MESH)) {
6521                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6522                                   rssi, flags, data, len, NULL, 0, instant);
6523                 return;
6524         }
6525
6526         /* Passive scanning shouldn't trigger any device found events,
6527          * except for devices marked as CONN_REPORT for which we do send
6528          * device found events, or advertisement monitoring requested.
6529          */
6530         if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6531                 if (type == LE_ADV_DIRECT_IND)
6532                         return;
6533
6534 #ifndef TIZEN_BT
6535                 /* Handle all adv packet in platform */
6536                 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6537                                                bdaddr, bdaddr_type) &&
6538                     idr_is_empty(&hdev->adv_monitors_idr))
6539                         return;
6540 #endif
6541
6542 #ifdef TIZEN_BT
6543                 mgmt_le_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6544                                   rssi, flags, data, len, NULL, 0, type);
6545 #else
6546                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6547                                   rssi, flags, data, len, NULL, 0, 0);
6548 #endif
6549                 return;
6550         }
6551
6552         /* When receiving a scan response, then there is no way to
6553          * know if the remote device is connectable or not. However
6554          * since scan responses are merged with a previously seen
6555          * advertising report, the flags field from that report
6556          * will be used.
6557          *
6558          * In the unlikely case that a controller just sends a scan
6559          * response event that doesn't match the pending report, then
6560          * it is marked as a standalone SCAN_RSP.
6561          */
6562         if (type == LE_ADV_SCAN_RSP)
6563                 flags = MGMT_DEV_FOUND_SCAN_RSP;
6564
6565 #ifdef TIZEN_BT
6566         /* Disable adv ind and scan rsp merging */
6567         mgmt_le_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6568                                   rssi, flags, data, len, NULL, 0, type);
6569 #else
6570         /* If there's nothing pending either store the data from this
6571          * event or send an immediate device found event if the data
6572          * should not be stored for later.
6573          */
6574         if (!ext_adv && !has_pending_adv_report(hdev)) {
6575                 /* If the report will trigger a SCAN_REQ store it for
6576                  * later merging.
6577                  */
6578                 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6579                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6580                                                  rssi, flags, data, len);
6581                         return;
6582                 }
6583
6584                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6585                                   rssi, flags, data, len, NULL, 0, 0);
6586                 return;
6587         }
6588
6589         /* Check if the pending report is for the same device as the new one */
6590         match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6591                  bdaddr_type == d->last_adv_addr_type);
6592
6593         /* If the pending data doesn't match this report or this isn't a
6594          * scan response (e.g. we got a duplicate ADV_IND) then force
6595          * sending of the pending data.
6596          */
6597         if (type != LE_ADV_SCAN_RSP || !match) {
6598                 /* Send out whatever is in the cache, but skip duplicates */
6599                 if (!match)
6600                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6601                                           d->last_adv_addr_type, NULL,
6602                                           d->last_adv_rssi, d->last_adv_flags,
6603                                           d->last_adv_data,
6604                                           d->last_adv_data_len, NULL, 0, 0);
6605
6606                 /* If the new report will trigger a SCAN_REQ store it for
6607                  * later merging.
6608                  */
6609                 if (!ext_adv && (type == LE_ADV_IND ||
6610                                  type == LE_ADV_SCAN_IND)) {
6611                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6612                                                  rssi, flags, data, len);
6613                         return;
6614                 }
6615
6616                 /* The advertising reports cannot be merged, so clear
6617                  * the pending report and send out a device found event.
6618                  */
6619                 clear_pending_adv_report(hdev);
6620                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6621                                   rssi, flags, data, len, NULL, 0, 0);
6622                 return;
6623         }
6624
6625         /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6626          * the new event is a SCAN_RSP. We can therefore proceed with
6627          * sending a merged device found event.
6628          */
6629         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6630                           d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6631                           d->last_adv_data, d->last_adv_data_len, data, len, 0);
6632         clear_pending_adv_report(hdev);
6633 #endif
6634 }
6635
6636 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6637                                   struct sk_buff *skb)
6638 {
6639         struct hci_ev_le_advertising_report *ev = data;
6640         u64 instant = jiffies;
6641
6642         if (!ev->num)
6643                 return;
6644
6645         hci_dev_lock(hdev);
6646
6647         while (ev->num--) {
6648                 struct hci_ev_le_advertising_info *info;
6649                 s8 rssi;
6650
6651                 info = hci_le_ev_skb_pull(hdev, skb,
6652                                           HCI_EV_LE_ADVERTISING_REPORT,
6653                                           sizeof(*info));
6654                 if (!info)
6655                         break;
6656
6657                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6658                                         info->length + 1))
6659                         break;
6660
6661                 if (info->length <= HCI_MAX_AD_LENGTH) {
6662                         rssi = info->data[info->length];
6663                         process_adv_report(hdev, info->type, &info->bdaddr,
6664                                            info->bdaddr_type, NULL, 0, rssi,
6665                                            info->data, info->length, false,
6666                                            false, instant);
6667                 } else {
6668                         bt_dev_err(hdev, "Dropping invalid advertising data");
6669                 }
6670         }
6671
6672         hci_dev_unlock(hdev);
6673 }
6674
6675 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6676 {
6677         if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6678                 switch (evt_type) {
6679                 case LE_LEGACY_ADV_IND:
6680                         return LE_ADV_IND;
6681                 case LE_LEGACY_ADV_DIRECT_IND:
6682                         return LE_ADV_DIRECT_IND;
6683                 case LE_LEGACY_ADV_SCAN_IND:
6684                         return LE_ADV_SCAN_IND;
6685                 case LE_LEGACY_NONCONN_IND:
6686                         return LE_ADV_NONCONN_IND;
6687                 case LE_LEGACY_SCAN_RSP_ADV:
6688                 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6689                         return LE_ADV_SCAN_RSP;
6690                 }
6691
6692                 goto invalid;
6693         }
6694
6695         if (evt_type & LE_EXT_ADV_CONN_IND) {
6696                 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6697                         return LE_ADV_DIRECT_IND;
6698
6699                 return LE_ADV_IND;
6700         }
6701
6702         if (evt_type & LE_EXT_ADV_SCAN_RSP)
6703                 return LE_ADV_SCAN_RSP;
6704
6705         if (evt_type & LE_EXT_ADV_SCAN_IND)
6706                 return LE_ADV_SCAN_IND;
6707
6708         if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6709             evt_type & LE_EXT_ADV_DIRECT_IND)
6710                 return LE_ADV_NONCONN_IND;
6711
6712 invalid:
6713         bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6714                                evt_type);
6715
6716         return LE_ADV_INVALID;
6717 }
6718
6719 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6720                                       struct sk_buff *skb)
6721 {
6722         struct hci_ev_le_ext_adv_report *ev = data;
6723         u64 instant = jiffies;
6724
6725         if (!ev->num)
6726                 return;
6727
6728         hci_dev_lock(hdev);
6729
6730         while (ev->num--) {
6731                 struct hci_ev_le_ext_adv_info *info;
6732                 u8 legacy_evt_type;
6733                 u16 evt_type;
6734
6735                 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6736                                           sizeof(*info));
6737                 if (!info)
6738                         break;
6739
6740                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6741                                         info->length))
6742                         break;
6743
6744                 evt_type = __le16_to_cpu(info->type);
6745                 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6746                 if (legacy_evt_type != LE_ADV_INVALID) {
6747                         process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6748                                            info->bdaddr_type, NULL, 0,
6749                                            info->rssi, info->data, info->length,
6750                                            !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6751                                            false, instant);
6752                 }
6753         }
6754
6755         hci_dev_unlock(hdev);
6756 }
6757
6758 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6759 {
6760         struct hci_cp_le_pa_term_sync cp;
6761
6762         memset(&cp, 0, sizeof(cp));
6763         cp.handle = handle;
6764
6765         return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6766 }
6767
6768 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6769                                             struct sk_buff *skb)
6770 {
6771         struct hci_ev_le_pa_sync_established *ev = data;
6772         int mask = hdev->link_mode;
6773         __u8 flags = 0;
6774
6775         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6776
6777         if (ev->status)
6778                 return;
6779
6780         hci_dev_lock(hdev);
6781
6782         hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6783
6784         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6785         if (!(mask & HCI_LM_ACCEPT))
6786                 hci_le_pa_term_sync(hdev, ev->handle);
6787
6788         hci_dev_unlock(hdev);
6789 }
6790
6791 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6792                                             struct sk_buff *skb)
6793 {
6794         struct hci_ev_le_remote_feat_complete *ev = data;
6795         struct hci_conn *conn;
6796
6797         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6798
6799         hci_dev_lock(hdev);
6800
6801         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6802         if (conn) {
6803                 if (!ev->status)
6804                         memcpy(conn->features[0], ev->features, 8);
6805
6806                 if (conn->state == BT_CONFIG) {
6807                         __u8 status;
6808
6809                         /* If the local controller supports peripheral-initiated
6810                          * features exchange, but the remote controller does
6811                          * not, then it is possible that the error code 0x1a
6812                          * for unsupported remote feature gets returned.
6813                          *
6814                          * In this specific case, allow the connection to
6815                          * transition into connected state and mark it as
6816                          * successful.
6817                          */
6818                         if (!conn->out && ev->status == 0x1a &&
6819                             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6820                                 status = 0x00;
6821                         else
6822                                 status = ev->status;
6823
6824                         conn->state = BT_CONNECTED;
6825                         hci_connect_cfm(conn, status);
6826                         hci_conn_drop(conn);
6827                 }
6828         }
6829
6830         hci_dev_unlock(hdev);
6831 }
6832
6833 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6834                                    struct sk_buff *skb)
6835 {
6836         struct hci_ev_le_ltk_req *ev = data;
6837         struct hci_cp_le_ltk_reply cp;
6838         struct hci_cp_le_ltk_neg_reply neg;
6839         struct hci_conn *conn;
6840         struct smp_ltk *ltk;
6841
6842         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6843
6844         hci_dev_lock(hdev);
6845
6846         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6847         if (conn == NULL)
6848                 goto not_found;
6849
6850         ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6851         if (!ltk)
6852                 goto not_found;
6853
6854         if (smp_ltk_is_sc(ltk)) {
6855                 /* With SC both EDiv and Rand are set to zero */
6856                 if (ev->ediv || ev->rand)
6857                         goto not_found;
6858         } else {
6859                 /* For non-SC keys check that EDiv and Rand match */
6860                 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6861                         goto not_found;
6862         }
6863
6864         memcpy(cp.ltk, ltk->val, ltk->enc_size);
6865         memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6866         cp.handle = cpu_to_le16(conn->handle);
6867
6868         conn->pending_sec_level = smp_ltk_sec_level(ltk);
6869
6870         conn->enc_key_size = ltk->enc_size;
6871
6872         hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6873
6874         /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6875          * temporary key used to encrypt a connection following
6876          * pairing. It is used during the Encrypted Session Setup to
6877          * distribute the keys. Later, security can be re-established
6878          * using a distributed LTK.
6879          */
6880         if (ltk->type == SMP_STK) {
6881                 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6882                 list_del_rcu(&ltk->list);
6883                 kfree_rcu(ltk, rcu);
6884         } else {
6885                 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6886         }
6887
6888         hci_dev_unlock(hdev);
6889
6890         return;
6891
6892 not_found:
6893         neg.handle = ev->handle;
6894         hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6895         hci_dev_unlock(hdev);
6896 }
6897
6898 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6899                                       u8 reason)
6900 {
6901         struct hci_cp_le_conn_param_req_neg_reply cp;
6902
6903         cp.handle = cpu_to_le16(handle);
6904         cp.reason = reason;
6905
6906         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6907                      &cp);
6908 }
6909
6910 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6911                                              struct sk_buff *skb)
6912 {
6913         struct hci_ev_le_remote_conn_param_req *ev = data;
6914         struct hci_cp_le_conn_param_req_reply cp;
6915         struct hci_conn *hcon;
6916         u16 handle, min, max, latency, timeout;
6917
6918         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6919
6920         handle = le16_to_cpu(ev->handle);
6921         min = le16_to_cpu(ev->interval_min);
6922         max = le16_to_cpu(ev->interval_max);
6923         latency = le16_to_cpu(ev->latency);
6924         timeout = le16_to_cpu(ev->timeout);
6925
6926         hcon = hci_conn_hash_lookup_handle(hdev, handle);
6927         if (!hcon || hcon->state != BT_CONNECTED)
6928                 return send_conn_param_neg_reply(hdev, handle,
6929                                                  HCI_ERROR_UNKNOWN_CONN_ID);
6930
6931         if (hci_check_conn_params(min, max, latency, timeout))
6932                 return send_conn_param_neg_reply(hdev, handle,
6933                                                  HCI_ERROR_INVALID_LL_PARAMS);
6934
6935         if (hcon->role == HCI_ROLE_MASTER) {
6936                 struct hci_conn_params *params;
6937                 u8 store_hint;
6938
6939                 hci_dev_lock(hdev);
6940
6941                 params = hci_conn_params_lookup(hdev, &hcon->dst,
6942                                                 hcon->dst_type);
6943                 if (params) {
6944                         params->conn_min_interval = min;
6945                         params->conn_max_interval = max;
6946                         params->conn_latency = latency;
6947                         params->supervision_timeout = timeout;
6948                         store_hint = 0x01;
6949                 } else {
6950                         store_hint = 0x00;
6951                 }
6952
6953                 hci_dev_unlock(hdev);
6954
6955                 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6956                                     store_hint, min, max, latency, timeout);
6957         }
6958
6959         cp.handle = ev->handle;
6960         cp.interval_min = ev->interval_min;
6961         cp.interval_max = ev->interval_max;
6962         cp.latency = ev->latency;
6963         cp.timeout = ev->timeout;
6964         cp.min_ce_len = 0;
6965         cp.max_ce_len = 0;
6966
6967         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6968 }
6969
6970 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6971                                          struct sk_buff *skb)
6972 {
6973         struct hci_ev_le_direct_adv_report *ev = data;
6974         u64 instant = jiffies;
6975         int i;
6976
6977         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6978                                 flex_array_size(ev, info, ev->num)))
6979                 return;
6980
6981         if (!ev->num)
6982                 return;
6983
6984         hci_dev_lock(hdev);
6985
6986         for (i = 0; i < ev->num; i++) {
6987                 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6988
6989                 process_adv_report(hdev, info->type, &info->bdaddr,
6990                                    info->bdaddr_type, &info->direct_addr,
6991                                    info->direct_addr_type, info->rssi, NULL, 0,
6992                                    false, false, instant);
6993         }
6994
6995         hci_dev_unlock(hdev);
6996 }
6997
6998 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6999                                   struct sk_buff *skb)
7000 {
7001         struct hci_ev_le_phy_update_complete *ev = data;
7002         struct hci_conn *conn;
7003
7004         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7005
7006         if (ev->status)
7007                 return;
7008
7009         hci_dev_lock(hdev);
7010
7011         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
7012         if (!conn)
7013                 goto unlock;
7014
7015         conn->le_tx_phy = ev->tx_phy;
7016         conn->le_rx_phy = ev->rx_phy;
7017
7018 unlock:
7019         hci_dev_unlock(hdev);
7020 }
7021
7022 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
7023                                         struct sk_buff *skb)
7024 {
7025         struct hci_evt_le_cis_established *ev = data;
7026         struct hci_conn *conn;
7027         u16 handle = __le16_to_cpu(ev->handle);
7028
7029         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7030
7031         hci_dev_lock(hdev);
7032
7033         conn = hci_conn_hash_lookup_handle(hdev, handle);
7034         if (!conn) {
7035                 bt_dev_err(hdev,
7036                            "Unable to find connection with handle 0x%4.4x",
7037                            handle);
7038                 goto unlock;
7039         }
7040
7041         if (conn->type != ISO_LINK) {
7042                 bt_dev_err(hdev,
7043                            "Invalid connection link type handle 0x%4.4x",
7044                            handle);
7045                 goto unlock;
7046         }
7047
7048         if (conn->role == HCI_ROLE_SLAVE) {
7049                 __le32 interval;
7050
7051                 memset(&interval, 0, sizeof(interval));
7052
7053                 memcpy(&interval, ev->c_latency, sizeof(ev->c_latency));
7054                 conn->iso_qos.in.interval = le32_to_cpu(interval);
7055                 memcpy(&interval, ev->p_latency, sizeof(ev->p_latency));
7056                 conn->iso_qos.out.interval = le32_to_cpu(interval);
7057                 conn->iso_qos.in.latency = le16_to_cpu(ev->interval);
7058                 conn->iso_qos.out.latency = le16_to_cpu(ev->interval);
7059                 conn->iso_qos.in.sdu = le16_to_cpu(ev->c_mtu);
7060                 conn->iso_qos.out.sdu = le16_to_cpu(ev->p_mtu);
7061                 conn->iso_qos.in.phy = ev->c_phy;
7062                 conn->iso_qos.out.phy = ev->p_phy;
7063         }
7064
7065         if (!ev->status) {
7066                 conn->state = BT_CONNECTED;
7067                 hci_debugfs_create_conn(conn);
7068                 hci_conn_add_sysfs(conn);
7069                 hci_iso_setup_path(conn);
7070                 goto unlock;
7071         }
7072
7073         hci_connect_cfm(conn, ev->status);
7074         hci_conn_del(conn);
7075
7076 unlock:
7077         hci_dev_unlock(hdev);
7078 }
7079
7080 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
7081 {
7082         struct hci_cp_le_reject_cis cp;
7083
7084         memset(&cp, 0, sizeof(cp));
7085         cp.handle = handle;
7086         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
7087         hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
7088 }
7089
7090 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
7091 {
7092         struct hci_cp_le_accept_cis cp;
7093
7094         memset(&cp, 0, sizeof(cp));
7095         cp.handle = handle;
7096         hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
7097 }
7098
7099 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
7100                                struct sk_buff *skb)
7101 {
7102         struct hci_evt_le_cis_req *ev = data;
7103         u16 acl_handle, cis_handle;
7104         struct hci_conn *acl, *cis;
7105         int mask;
7106         __u8 flags = 0;
7107
7108         acl_handle = __le16_to_cpu(ev->acl_handle);
7109         cis_handle = __le16_to_cpu(ev->cis_handle);
7110
7111         bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
7112                    acl_handle, cis_handle, ev->cig_id, ev->cis_id);
7113
7114         hci_dev_lock(hdev);
7115
7116         acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
7117         if (!acl)
7118                 goto unlock;
7119
7120         mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
7121         if (!(mask & HCI_LM_ACCEPT)) {
7122                 hci_le_reject_cis(hdev, ev->cis_handle);
7123                 goto unlock;
7124         }
7125
7126         cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
7127         if (!cis) {
7128                 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE);
7129                 if (!cis) {
7130                         hci_le_reject_cis(hdev, ev->cis_handle);
7131                         goto unlock;
7132                 }
7133                 cis->handle = cis_handle;
7134         }
7135
7136         cis->iso_qos.cig = ev->cig_id;
7137         cis->iso_qos.cis = ev->cis_id;
7138
7139         if (!(flags & HCI_PROTO_DEFER)) {
7140                 hci_le_accept_cis(hdev, ev->cis_handle);
7141         } else {
7142                 cis->state = BT_CONNECT2;
7143                 hci_connect_cfm(cis, 0);
7144         }
7145
7146 unlock:
7147         hci_dev_unlock(hdev);
7148 }
7149
7150 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
7151                                            struct sk_buff *skb)
7152 {
7153         struct hci_evt_le_create_big_complete *ev = data;
7154         struct hci_conn *conn;
7155
7156         BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
7157
7158         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
7159                                 flex_array_size(ev, bis_handle, ev->num_bis)))
7160                 return;
7161
7162         hci_dev_lock(hdev);
7163
7164         conn = hci_conn_hash_lookup_big(hdev, ev->handle);
7165         if (!conn)
7166                 goto unlock;
7167
7168         if (conn->type != ISO_LINK) {
7169                 bt_dev_err(hdev,
7170                            "Invalid connection link type handle 0x%2.2x",
7171                            ev->handle);
7172                 goto unlock;
7173         }
7174
7175         if (ev->num_bis)
7176                 conn->handle = __le16_to_cpu(ev->bis_handle[0]);
7177
7178         if (!ev->status) {
7179                 conn->state = BT_CONNECTED;
7180                 hci_debugfs_create_conn(conn);
7181                 hci_conn_add_sysfs(conn);
7182                 hci_iso_setup_path(conn);
7183                 goto unlock;
7184         }
7185
7186         hci_connect_cfm(conn, ev->status);
7187         hci_conn_del(conn);
7188
7189 unlock:
7190         hci_dev_unlock(hdev);
7191 }
7192
7193 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
7194                                             struct sk_buff *skb)
7195 {
7196         struct hci_evt_le_big_sync_estabilished *ev = data;
7197         struct hci_conn *bis;
7198         int i;
7199
7200         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7201
7202         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7203                                 flex_array_size(ev, bis, ev->num_bis)))
7204                 return;
7205
7206         if (ev->status)
7207                 return;
7208
7209         hci_dev_lock(hdev);
7210
7211         for (i = 0; i < ev->num_bis; i++) {
7212                 u16 handle = le16_to_cpu(ev->bis[i]);
7213                 __le32 interval;
7214
7215                 bis = hci_conn_hash_lookup_handle(hdev, handle);
7216                 if (!bis) {
7217                         bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
7218                                            HCI_ROLE_SLAVE);
7219                         if (!bis)
7220                                 continue;
7221                         bis->handle = handle;
7222                 }
7223
7224                 bis->iso_qos.big = ev->handle;
7225                 memset(&interval, 0, sizeof(interval));
7226                 memcpy(&interval, ev->latency, sizeof(ev->latency));
7227                 bis->iso_qos.in.interval = le32_to_cpu(interval);
7228                 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7229                 bis->iso_qos.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7230                 bis->iso_qos.in.sdu = le16_to_cpu(ev->max_pdu);
7231
7232                 hci_iso_setup_path(bis);
7233         }
7234
7235         hci_dev_unlock(hdev);
7236 }
7237
7238 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7239                                            struct sk_buff *skb)
7240 {
7241         struct hci_evt_le_big_info_adv_report *ev = data;
7242         int mask = hdev->link_mode;
7243         __u8 flags = 0;
7244
7245         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7246
7247         hci_dev_lock(hdev);
7248
7249         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7250         if (!(mask & HCI_LM_ACCEPT))
7251                 hci_le_pa_term_sync(hdev, ev->sync_handle);
7252
7253         hci_dev_unlock(hdev);
7254 }
7255
7256 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7257 [_op] = { \
7258         .func = _func, \
7259         .min_len = _min_len, \
7260         .max_len = _max_len, \
7261 }
7262
7263 #define HCI_LE_EV(_op, _func, _len) \
7264         HCI_LE_EV_VL(_op, _func, _len, _len)
7265
7266 #define HCI_LE_EV_STATUS(_op, _func) \
7267         HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7268
7269 /* Entries in this table shall have their position according to the subevent
7270  * opcode they handle so the use of the macros above is recommend since it does
7271  * attempt to initialize at its proper index using Designated Initializers that
7272  * way events without a callback function can be ommited.
7273  */
7274 static const struct hci_le_ev {
7275         void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7276         u16  min_len;
7277         u16  max_len;
7278 } hci_le_ev_table[U8_MAX + 1] = {
7279         /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7280         HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7281                   sizeof(struct hci_ev_le_conn_complete)),
7282         /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7283         HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7284                      sizeof(struct hci_ev_le_advertising_report),
7285                      HCI_MAX_EVENT_SIZE),
7286         /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7287         HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7288                   hci_le_conn_update_complete_evt,
7289                   sizeof(struct hci_ev_le_conn_update_complete)),
7290         /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7291         HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7292                   hci_le_remote_feat_complete_evt,
7293                   sizeof(struct hci_ev_le_remote_feat_complete)),
7294         /* [0x05 = HCI_EV_LE_LTK_REQ] */
7295         HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7296                   sizeof(struct hci_ev_le_ltk_req)),
7297         /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7298         HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7299                   hci_le_remote_conn_param_req_evt,
7300                   sizeof(struct hci_ev_le_remote_conn_param_req)),
7301         /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7302         HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7303                   hci_le_enh_conn_complete_evt,
7304                   sizeof(struct hci_ev_le_enh_conn_complete)),
7305         /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7306         HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7307                      sizeof(struct hci_ev_le_direct_adv_report),
7308                      HCI_MAX_EVENT_SIZE),
7309         /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7310         HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7311                   sizeof(struct hci_ev_le_phy_update_complete)),
7312         /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7313         HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7314                      sizeof(struct hci_ev_le_ext_adv_report),
7315                      HCI_MAX_EVENT_SIZE),
7316         /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7317         HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7318                   hci_le_pa_sync_estabilished_evt,
7319                   sizeof(struct hci_ev_le_pa_sync_established)),
7320         /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7321         HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7322                   sizeof(struct hci_evt_le_ext_adv_set_term)),
7323         /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7324         HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7325                   sizeof(struct hci_evt_le_cis_established)),
7326         /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7327         HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7328                   sizeof(struct hci_evt_le_cis_req)),
7329         /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7330         HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7331                      hci_le_create_big_complete_evt,
7332                      sizeof(struct hci_evt_le_create_big_complete),
7333                      HCI_MAX_EVENT_SIZE),
7334         /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7335         HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7336                      hci_le_big_sync_established_evt,
7337                      sizeof(struct hci_evt_le_big_sync_estabilished),
7338                      HCI_MAX_EVENT_SIZE),
7339         /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7340         HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7341                      hci_le_big_info_adv_report_evt,
7342                      sizeof(struct hci_evt_le_big_info_adv_report),
7343                      HCI_MAX_EVENT_SIZE),
7344 };
7345
7346 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7347                             struct sk_buff *skb, u16 *opcode, u8 *status,
7348                             hci_req_complete_t *req_complete,
7349                             hci_req_complete_skb_t *req_complete_skb)
7350 {
7351         struct hci_ev_le_meta *ev = data;
7352         const struct hci_le_ev *subev;
7353
7354         bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7355
7356         /* Only match event if command OGF is for LE */
7357         if (hdev->sent_cmd &&
7358             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7359             hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7360                 *opcode = hci_skb_opcode(hdev->sent_cmd);
7361                 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7362                                      req_complete_skb);
7363         }
7364
7365         subev = &hci_le_ev_table[ev->subevent];
7366         if (!subev->func)
7367                 return;
7368
7369         if (skb->len < subev->min_len) {
7370                 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7371                            ev->subevent, skb->len, subev->min_len);
7372                 return;
7373         }
7374
7375         /* Just warn if the length is over max_len size it still be
7376          * possible to partially parse the event so leave to callback to
7377          * decide if that is acceptable.
7378          */
7379         if (skb->len > subev->max_len)
7380                 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7381                             ev->subevent, skb->len, subev->max_len);
7382         data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7383         if (!data)
7384                 return;
7385
7386         subev->func(hdev, data, skb);
7387 }
7388
7389 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7390                                  u8 event, struct sk_buff *skb)
7391 {
7392         struct hci_ev_cmd_complete *ev;
7393         struct hci_event_hdr *hdr;
7394
7395         if (!skb)
7396                 return false;
7397
7398         hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7399         if (!hdr)
7400                 return false;
7401
7402         if (event) {
7403                 if (hdr->evt != event)
7404                         return false;
7405                 return true;
7406         }
7407
7408         /* Check if request ended in Command Status - no way to retrieve
7409          * any extra parameters in this case.
7410          */
7411         if (hdr->evt == HCI_EV_CMD_STATUS)
7412                 return false;
7413
7414         if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7415                 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7416                            hdr->evt);
7417                 return false;
7418         }
7419
7420         ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7421         if (!ev)
7422                 return false;
7423
7424         if (opcode != __le16_to_cpu(ev->opcode)) {
7425                 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7426                        __le16_to_cpu(ev->opcode));
7427                 return false;
7428         }
7429
7430         return true;
7431 }
7432
7433 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7434                                   struct sk_buff *skb)
7435 {
7436         struct hci_ev_le_advertising_info *adv;
7437         struct hci_ev_le_direct_adv_info *direct_adv;
7438         struct hci_ev_le_ext_adv_info *ext_adv;
7439         const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7440         const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7441
7442         hci_dev_lock(hdev);
7443
7444         /* If we are currently suspended and this is the first BT event seen,
7445          * save the wake reason associated with the event.
7446          */
7447         if (!hdev->suspended || hdev->wake_reason)
7448                 goto unlock;
7449
7450         /* Default to remote wake. Values for wake_reason are documented in the
7451          * Bluez mgmt api docs.
7452          */
7453         hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7454
7455         /* Once configured for remote wakeup, we should only wake up for
7456          * reconnections. It's useful to see which device is waking us up so
7457          * keep track of the bdaddr of the connection event that woke us up.
7458          */
7459         if (event == HCI_EV_CONN_REQUEST) {
7460                 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7461                 hdev->wake_addr_type = BDADDR_BREDR;
7462         } else if (event == HCI_EV_CONN_COMPLETE) {
7463                 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7464                 hdev->wake_addr_type = BDADDR_BREDR;
7465         } else if (event == HCI_EV_LE_META) {
7466                 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7467                 u8 subevent = le_ev->subevent;
7468                 u8 *ptr = &skb->data[sizeof(*le_ev)];
7469                 u8 num_reports = *ptr;
7470
7471                 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7472                      subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7473                      subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7474                     num_reports) {
7475                         adv = (void *)(ptr + 1);
7476                         direct_adv = (void *)(ptr + 1);
7477                         ext_adv = (void *)(ptr + 1);
7478
7479                         switch (subevent) {
7480                         case HCI_EV_LE_ADVERTISING_REPORT:
7481                                 bacpy(&hdev->wake_addr, &adv->bdaddr);
7482                                 hdev->wake_addr_type = adv->bdaddr_type;
7483                                 break;
7484                         case HCI_EV_LE_DIRECT_ADV_REPORT:
7485                                 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7486                                 hdev->wake_addr_type = direct_adv->bdaddr_type;
7487                                 break;
7488                         case HCI_EV_LE_EXT_ADV_REPORT:
7489                                 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7490                                 hdev->wake_addr_type = ext_adv->bdaddr_type;
7491                                 break;
7492                         }
7493                 }
7494         } else {
7495                 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7496         }
7497
7498 unlock:
7499         hci_dev_unlock(hdev);
7500 }
7501
7502 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7503 [_op] = { \
7504         .req = false, \
7505         .func = _func, \
7506         .min_len = _min_len, \
7507         .max_len = _max_len, \
7508 }
7509
7510 #define HCI_EV(_op, _func, _len) \
7511         HCI_EV_VL(_op, _func, _len, _len)
7512
7513 #define HCI_EV_STATUS(_op, _func) \
7514         HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7515
7516 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7517 [_op] = { \
7518         .req = true, \
7519         .func_req = _func, \
7520         .min_len = _min_len, \
7521         .max_len = _max_len, \
7522 }
7523
7524 #define HCI_EV_REQ(_op, _func, _len) \
7525         HCI_EV_REQ_VL(_op, _func, _len, _len)
7526
7527 /* Entries in this table shall have their position according to the event opcode
7528  * they handle so the use of the macros above is recommend since it does attempt
7529  * to initialize at its proper index using Designated Initializers that way
7530  * events without a callback function don't have entered.
7531  */
7532 static const struct hci_ev {
7533         bool req;
7534         union {
7535                 void (*func)(struct hci_dev *hdev, void *data,
7536                              struct sk_buff *skb);
7537                 void (*func_req)(struct hci_dev *hdev, void *data,
7538                                  struct sk_buff *skb, u16 *opcode, u8 *status,
7539                                  hci_req_complete_t *req_complete,
7540                                  hci_req_complete_skb_t *req_complete_skb);
7541         };
7542         u16  min_len;
7543         u16  max_len;
7544 } hci_ev_table[U8_MAX + 1] = {
7545         /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7546         HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7547         /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7548         HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7549                   sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7550         /* [0x03 = HCI_EV_CONN_COMPLETE] */
7551         HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7552                sizeof(struct hci_ev_conn_complete)),
7553         /* [0x04 = HCI_EV_CONN_REQUEST] */
7554         HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7555                sizeof(struct hci_ev_conn_request)),
7556         /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7557         HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7558                sizeof(struct hci_ev_disconn_complete)),
7559         /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7560         HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7561                sizeof(struct hci_ev_auth_complete)),
7562         /* [0x07 = HCI_EV_REMOTE_NAME] */
7563         HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7564                sizeof(struct hci_ev_remote_name)),
7565         /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7566         HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7567                sizeof(struct hci_ev_encrypt_change)),
7568         /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7569         HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7570                hci_change_link_key_complete_evt,
7571                sizeof(struct hci_ev_change_link_key_complete)),
7572         /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7573         HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7574                sizeof(struct hci_ev_remote_features)),
7575         /* [0x0e = HCI_EV_CMD_COMPLETE] */
7576         HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7577                       sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7578         /* [0x0f = HCI_EV_CMD_STATUS] */
7579         HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7580                    sizeof(struct hci_ev_cmd_status)),
7581         /* [0x10 = HCI_EV_CMD_STATUS] */
7582         HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7583                sizeof(struct hci_ev_hardware_error)),
7584         /* [0x12 = HCI_EV_ROLE_CHANGE] */
7585         HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7586                sizeof(struct hci_ev_role_change)),
7587         /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7588         HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7589                   sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7590         /* [0x14 = HCI_EV_MODE_CHANGE] */
7591         HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7592                sizeof(struct hci_ev_mode_change)),
7593         /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7594         HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7595                sizeof(struct hci_ev_pin_code_req)),
7596         /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7597         HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7598                sizeof(struct hci_ev_link_key_req)),
7599         /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7600         HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7601                sizeof(struct hci_ev_link_key_notify)),
7602         /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7603         HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7604                sizeof(struct hci_ev_clock_offset)),
7605         /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7606         HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7607                sizeof(struct hci_ev_pkt_type_change)),
7608         /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7609         HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7610                sizeof(struct hci_ev_pscan_rep_mode)),
7611         /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7612         HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7613                   hci_inquiry_result_with_rssi_evt,
7614                   sizeof(struct hci_ev_inquiry_result_rssi),
7615                   HCI_MAX_EVENT_SIZE),
7616         /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7617         HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7618                sizeof(struct hci_ev_remote_ext_features)),
7619         /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7620         HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7621                sizeof(struct hci_ev_sync_conn_complete)),
7622         /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7623         HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7624                   hci_extended_inquiry_result_evt,
7625                   sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7626         /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7627         HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7628                sizeof(struct hci_ev_key_refresh_complete)),
7629         /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7630         HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7631                sizeof(struct hci_ev_io_capa_request)),
7632         /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7633         HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7634                sizeof(struct hci_ev_io_capa_reply)),
7635         /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7636         HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7637                sizeof(struct hci_ev_user_confirm_req)),
7638         /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7639         HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7640                sizeof(struct hci_ev_user_passkey_req)),
7641         /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7642         HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7643                sizeof(struct hci_ev_remote_oob_data_request)),
7644         /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7645         HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7646                sizeof(struct hci_ev_simple_pair_complete)),
7647         /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7648         HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7649                sizeof(struct hci_ev_user_passkey_notify)),
7650         /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7651         HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7652                sizeof(struct hci_ev_keypress_notify)),
7653         /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7654         HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7655                sizeof(struct hci_ev_remote_host_features)),
7656         /* [0x3e = HCI_EV_LE_META] */
7657         HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7658                       sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7659 #if IS_ENABLED(CONFIG_BT_HS)
7660         /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7661         HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7662                sizeof(struct hci_ev_phy_link_complete)),
7663         /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7664         HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7665                sizeof(struct hci_ev_channel_selected)),
7666         /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7667         HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7668                hci_disconn_loglink_complete_evt,
7669                sizeof(struct hci_ev_disconn_logical_link_complete)),
7670         /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7671         HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7672                sizeof(struct hci_ev_logical_link_complete)),
7673         /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7674         HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7675                hci_disconn_phylink_complete_evt,
7676                sizeof(struct hci_ev_disconn_phy_link_complete)),
7677 #endif
7678         /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7679         HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7680                sizeof(struct hci_ev_num_comp_blocks)),
7681 #ifdef TIZEN_BT
7682         /* [0xFF = HCI_EV_VENDOR_SPECIFIC] */
7683         HCI_EV(HCI_EV_VENDOR_SPECIFIC, hci_vendor_specific_evt,
7684                sizeof(struct hci_ev_vendor_specific)),
7685 #else
7686         /* [0xff = HCI_EV_VENDOR] */
7687         HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7688 #endif
7689 };
7690
7691 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7692                            u16 *opcode, u8 *status,
7693                            hci_req_complete_t *req_complete,
7694                            hci_req_complete_skb_t *req_complete_skb)
7695 {
7696         const struct hci_ev *ev = &hci_ev_table[event];
7697         void *data;
7698
7699         if (!ev->func)
7700                 return;
7701
7702         if (skb->len < ev->min_len) {
7703                 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7704                            event, skb->len, ev->min_len);
7705                 return;
7706         }
7707
7708         /* Just warn if the length is over max_len size it still be
7709          * possible to partially parse the event so leave to callback to
7710          * decide if that is acceptable.
7711          */
7712         if (skb->len > ev->max_len)
7713                 bt_dev_warn_ratelimited(hdev,
7714                                         "unexpected event 0x%2.2x length: %u > %u",
7715                                         event, skb->len, ev->max_len);
7716
7717         data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7718         if (!data)
7719                 return;
7720
7721         if (ev->req)
7722                 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7723                              req_complete_skb);
7724         else
7725                 ev->func(hdev, data, skb);
7726 }
7727
7728 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7729 {
7730         struct hci_event_hdr *hdr = (void *) skb->data;
7731         hci_req_complete_t req_complete = NULL;
7732         hci_req_complete_skb_t req_complete_skb = NULL;
7733         struct sk_buff *orig_skb = NULL;
7734         u8 status = 0, event, req_evt = 0;
7735         u16 opcode = HCI_OP_NOP;
7736
7737         if (skb->len < sizeof(*hdr)) {
7738                 bt_dev_err(hdev, "Malformed HCI Event");
7739                 goto done;
7740         }
7741
7742         kfree_skb(hdev->recv_event);
7743         hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7744
7745         event = hdr->evt;
7746         if (!event) {
7747                 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7748                             event);
7749                 goto done;
7750         }
7751
7752         /* Only match event if command OGF is not for LE */
7753         if (hdev->sent_cmd &&
7754             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7755             hci_skb_event(hdev->sent_cmd) == event) {
7756                 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7757                                      status, &req_complete, &req_complete_skb);
7758                 req_evt = event;
7759         }
7760
7761         /* If it looks like we might end up having to call
7762          * req_complete_skb, store a pristine copy of the skb since the
7763          * various handlers may modify the original one through
7764          * skb_pull() calls, etc.
7765          */
7766         if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7767             event == HCI_EV_CMD_COMPLETE)
7768                 orig_skb = skb_clone(skb, GFP_KERNEL);
7769
7770         skb_pull(skb, HCI_EVENT_HDR_SIZE);
7771
7772         /* Store wake reason if we're suspended */
7773         hci_store_wake_reason(hdev, event, skb);
7774
7775         bt_dev_dbg(hdev, "event 0x%2.2x", event);
7776
7777         hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7778                        &req_complete_skb);
7779
7780         if (req_complete) {
7781                 req_complete(hdev, status, opcode);
7782         } else if (req_complete_skb) {
7783                 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7784                         kfree_skb(orig_skb);
7785                         orig_skb = NULL;
7786                 }
7787                 req_complete_skb(hdev, status, opcode, orig_skb);
7788         }
7789
7790 done:
7791         kfree_skb(orig_skb);
7792         kfree_skb(skb);
7793         hdev->stat.evt_rx++;
7794 }