net/bluetooth/hci_event.c

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
   4
   5    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License version 2 as
   9    published by the Free Software Foundation;
  10
  11    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  12    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  14    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  15    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  16    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  21    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  22    SOFTWARE IS DISCLAIMED.
  23 */
  24
  25 /* Bluetooth HCI event handling. */
  26
  27 #include <asm/unaligned.h>
  28
  29 #include <net/bluetooth/bluetooth.h>
  30 #include <net/bluetooth/hci_core.h>
  31 #include <net/bluetooth/mgmt.h>
  32
  33 #include "hci_request.h"
  34 #include "hci_debugfs.h"
  35 #include "a2mp.h"
  36 #include "amp.h"
  37 #include "smp.h"
  38 #include "msft.h"
  39 #include "eir.h"
  40
  41 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
  42                  "\x00\x00\x00\x00\x00\x00\x00\x00"
  43
  44 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000)
  45
  46 /* Handle HCI Event packets */
  47
  48 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  49                              u8 ev, size_t len)
  50 {
  51         void *data;
  52
  53         data = skb_pull_data(skb, len);
  54         if (!data)
  55                 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev);
  56
  57         return data;
  58 }
  59
  60 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  61                              u16 op, size_t len)
  62 {
  63         void *data;
  64
  65         data = skb_pull_data(skb, len);
  66         if (!data)
  67                 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op);
  68
  69         return data;
  70 }
  71
  72 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  73                                 u8 ev, size_t len)
  74 {
  75         void *data;
  76
  77         data = skb_pull_data(skb, len);
  78         if (!data)
  79                 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev);
  80
  81         return data;
  82 }
  83
  84 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data,
  85                                 struct sk_buff *skb)
  86 {
  87         struct hci_ev_status *rp = data;
  88
  89         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
  90
  91         /* It is possible that we receive Inquiry Complete event right
  92          * before we receive Inquiry Cancel Command Complete event, in
  93          * which case the latter event should have status of Command
  94          * Disallowed (0x0c). This should not be treated as error, since
  95          * we actually achieve what Inquiry Cancel wants to achieve,
  96          * which is to end the last Inquiry session.
  97          */
  98         if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) {
  99                 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command");
 100                 rp->status = 0x00;
 101         }
 102
 103         if (rp->status)
 104                 return rp->status;
 105
 106         clear_bit(HCI_INQUIRY, &hdev->flags);
 107         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
 108         wake_up_bit(&hdev->flags, HCI_INQUIRY);
 109
 110         hci_dev_lock(hdev);
 111         /* Set discovery state to stopped if we're not doing LE active
 112          * scanning.
 113          */
 114         if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
 115             hdev->le_scan_type != LE_SCAN_ACTIVE)
 116                 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
 117         hci_dev_unlock(hdev);
 118
 119         hci_conn_check_pending(hdev);
 120
 121         return rp->status;
 122 }
 123
 124 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data,
 125                               struct sk_buff *skb)
 126 {
 127         struct hci_ev_status *rp = data;
 128
 129         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 130
 131         if (rp->status)
 132                 return rp->status;
 133
 134         hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
 135
 136         return rp->status;
 137 }
 138
 139 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data,
 140                                    struct sk_buff *skb)
 141 {
 142         struct hci_ev_status *rp = data;
 143
 144         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 145
 146         if (rp->status)
 147                 return rp->status;
 148
 149         hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
 150
 151         hci_conn_check_pending(hdev);
 152
 153         return rp->status;
 154 }
 155
 156 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data,
 157                                         struct sk_buff *skb)
 158 {
 159         struct hci_ev_status *rp = data;
 160
 161         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 162
 163         return rp->status;
 164 }
 165
 166 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data,
 167                                 struct sk_buff *skb)
 168 {
 169         struct hci_rp_role_discovery *rp = data;
 170         struct hci_conn *conn;
 171
 172         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 173
 174         if (rp->status)
 175                 return rp->status;
 176
 177         hci_dev_lock(hdev);
 178
 179         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 180         if (conn)
 181                 conn->role = rp->role;
 182
 183         hci_dev_unlock(hdev);
 184
 185         return rp->status;
 186 }
 187
 188 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data,
 189                                   struct sk_buff *skb)
 190 {
 191         struct hci_rp_read_link_policy *rp = data;
 192         struct hci_conn *conn;
 193
 194         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 195
 196         if (rp->status)
 197                 return rp->status;
 198
 199         hci_dev_lock(hdev);
 200
 201         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 202         if (conn)
 203                 conn->link_policy = __le16_to_cpu(rp->policy);
 204
 205         hci_dev_unlock(hdev);
 206
 207         return rp->status;
 208 }
 209
 210 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data,
 211                                    struct sk_buff *skb)
 212 {
 213         struct hci_rp_write_link_policy *rp = data;
 214         struct hci_conn *conn;
 215         void *sent;
 216
 217         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 218
 219         if (rp->status)
 220                 return rp->status;
 221
 222         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
 223         if (!sent)
 224                 return rp->status;
 225
 226         hci_dev_lock(hdev);
 227
 228         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 229         if (conn)
 230                 conn->link_policy = get_unaligned_le16(sent + 2);
 231
 232         hci_dev_unlock(hdev);
 233
 234         return rp->status;
 235 }
 236
 237 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data,
 238                                       struct sk_buff *skb)
 239 {
 240         struct hci_rp_read_def_link_policy *rp = data;
 241
 242         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 243
 244         if (rp->status)
 245                 return rp->status;
 246
 247         hdev->link_policy = __le16_to_cpu(rp->policy);
 248
 249         return rp->status;
 250 }
 251
 252 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data,
 253                                        struct sk_buff *skb)
 254 {
 255         struct hci_ev_status *rp = data;
 256         void *sent;
 257
 258         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 259
 260         if (rp->status)
 261                 return rp->status;
 262
 263         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
 264         if (!sent)
 265                 return rp->status;
 266
 267         hdev->link_policy = get_unaligned_le16(sent);
 268
 269         return rp->status;
 270 }
 271
 272 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb)
 273 {
 274         struct hci_ev_status *rp = data;
 275
 276         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 277
 278         clear_bit(HCI_RESET, &hdev->flags);
 279
 280         if (rp->status)
 281                 return rp->status;
 282
 283         /* Reset all non-persistent flags */
 284         hci_dev_clear_volatile_flags(hdev);
 285
 286         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
 287
 288         hdev->inq_tx_power = HCI_TX_POWER_INVALID;
 289         hdev->adv_tx_power = HCI_TX_POWER_INVALID;
 290
 291         memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
 292         hdev->adv_data_len = 0;
 293
 294         memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
 295         hdev->scan_rsp_data_len = 0;
 296
 297         hdev->le_scan_type = LE_SCAN_PASSIVE;
 298
 299         hdev->ssp_debug_mode = 0;
 300
 301         hci_bdaddr_list_clear(&hdev->le_accept_list);
 302         hci_bdaddr_list_clear(&hdev->le_resolv_list);
 303
 304         return rp->status;
 305 }
 306
 307 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data,
 308                                       struct sk_buff *skb)
 309 {
 310         struct hci_rp_read_stored_link_key *rp = data;
 311         struct hci_cp_read_stored_link_key *sent;
 312
 313         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 314
 315         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
 316         if (!sent)
 317                 return rp->status;
 318
 319         if (!rp->status && sent->read_all == 0x01) {
 320                 hdev->stored_max_keys = le16_to_cpu(rp->max_keys);
 321                 hdev->stored_num_keys = le16_to_cpu(rp->num_keys);
 322         }
 323
 324         return rp->status;
 325 }
 326
 327 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data,
 328                                         struct sk_buff *skb)
 329 {
 330         struct hci_rp_delete_stored_link_key *rp = data;
 331         u16 num_keys;
 332
 333         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 334
 335         if (rp->status)
 336                 return rp->status;
 337
 338         num_keys = le16_to_cpu(rp->num_keys);
 339
 340         if (num_keys <= hdev->stored_num_keys)
 341                 hdev->stored_num_keys -= num_keys;
 342         else
 343                 hdev->stored_num_keys = 0;
 344
 345         return rp->status;
 346 }
 347
 348 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data,
 349                                   struct sk_buff *skb)
 350 {
 351         struct hci_ev_status *rp = data;
 352         void *sent;
 353
 354         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 355
 356         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
 357         if (!sent)
 358                 return rp->status;
 359
 360         hci_dev_lock(hdev);
 361
 362         if (hci_dev_test_flag(hdev, HCI_MGMT))
 363                 mgmt_set_local_name_complete(hdev, sent, rp->status);
 364         else if (!rp->status)
 365                 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
 366
 367         hci_dev_unlock(hdev);
 368
 369         return rp->status;
 370 }
 371
 372 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data,
 373                                  struct sk_buff *skb)
 374 {
 375         struct hci_rp_read_local_name *rp = data;
 376
 377         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 378
 379         if (rp->status)
 380                 return rp->status;
 381
 382         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 383             hci_dev_test_flag(hdev, HCI_CONFIG))
 384                 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
 385
 386         return rp->status;
 387 }
 388
 389 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data,
 390                                    struct sk_buff *skb)
 391 {
 392         struct hci_ev_status *rp = data;
 393         void *sent;
 394
 395         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 396
 397         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
 398         if (!sent)
 399                 return rp->status;
 400
 401         hci_dev_lock(hdev);
 402
 403         if (!rp->status) {
 404                 __u8 param = *((__u8 *) sent);
 405
 406                 if (param == AUTH_ENABLED)
 407                         set_bit(HCI_AUTH, &hdev->flags);
 408                 else
 409                         clear_bit(HCI_AUTH, &hdev->flags);
 410         }
 411
 412         if (hci_dev_test_flag(hdev, HCI_MGMT))
 413                 mgmt_auth_enable_complete(hdev, rp->status);
 414
 415         hci_dev_unlock(hdev);
 416
 417         return rp->status;
 418 }
 419
 420 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data,
 421                                     struct sk_buff *skb)
 422 {
 423         struct hci_ev_status *rp = data;
 424         __u8 param;
 425         void *sent;
 426
 427         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 428
 429         if (rp->status)
 430                 return rp->status;
 431
 432         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
 433         if (!sent)
 434                 return rp->status;
 435
 436         param = *((__u8 *) sent);
 437
 438         if (param)
 439                 set_bit(HCI_ENCRYPT, &hdev->flags);
 440         else
 441                 clear_bit(HCI_ENCRYPT, &hdev->flags);
 442
 443         return rp->status;
 444 }
 445
 446 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data,
 447                                    struct sk_buff *skb)
 448 {
 449         struct hci_ev_status *rp = data;
 450         __u8 param;
 451         void *sent;
 452
 453         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 454
 455         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
 456         if (!sent)
 457                 return rp->status;
 458
 459         param = *((__u8 *) sent);
 460
 461         hci_dev_lock(hdev);
 462
 463         if (rp->status) {
 464                 hdev->discov_timeout = 0;
 465                 goto done;
 466         }
 467
 468         if (param & SCAN_INQUIRY)
 469                 set_bit(HCI_ISCAN, &hdev->flags);
 470         else
 471                 clear_bit(HCI_ISCAN, &hdev->flags);
 472
 473         if (param & SCAN_PAGE)
 474                 set_bit(HCI_PSCAN, &hdev->flags);
 475         else
 476                 clear_bit(HCI_PSCAN, &hdev->flags);
 477
 478 done:
 479         hci_dev_unlock(hdev);
 480
 481         return rp->status;
 482 }
 483
 484 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data,
 485                                   struct sk_buff *skb)
 486 {
 487         struct hci_ev_status *rp = data;
 488         struct hci_cp_set_event_filter *cp;
 489         void *sent;
 490
 491         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 492
 493         if (rp->status)
 494                 return rp->status;
 495
 496         sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT);
 497         if (!sent)
 498                 return rp->status;
 499
 500         cp = (struct hci_cp_set_event_filter *)sent;
 501
 502         if (cp->flt_type == HCI_FLT_CLEAR_ALL)
 503                 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
 504         else
 505                 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
 506
 507         return rp->status;
 508 }
 509
 510 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data,
 511                                    struct sk_buff *skb)
 512 {
 513         struct hci_rp_read_class_of_dev *rp = data;
 514
 515         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 516
 517         if (rp->status)
 518                 return rp->status;
 519
 520         memcpy(hdev->dev_class, rp->dev_class, 3);
 521
 522         bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2],
 523                    hdev->dev_class[1], hdev->dev_class[0]);
 524
 525         return rp->status;
 526 }
 527
 528 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data,
 529                                     struct sk_buff *skb)
 530 {
 531         struct hci_ev_status *rp = data;
 532         void *sent;
 533
 534         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 535
 536         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
 537         if (!sent)
 538                 return rp->status;
 539
 540         hci_dev_lock(hdev);
 541
 542         if (!rp->status)
 543                 memcpy(hdev->dev_class, sent, 3);
 544
 545         if (hci_dev_test_flag(hdev, HCI_MGMT))
 546                 mgmt_set_class_of_dev_complete(hdev, sent, rp->status);
 547
 548         hci_dev_unlock(hdev);
 549
 550         return rp->status;
 551 }
 552
 553 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data,
 554                                     struct sk_buff *skb)
 555 {
 556         struct hci_rp_read_voice_setting *rp = data;
 557         __u16 setting;
 558
 559         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 560
 561         if (rp->status)
 562                 return rp->status;
 563
 564         setting = __le16_to_cpu(rp->voice_setting);
 565
 566         if (hdev->voice_setting == setting)
 567                 return rp->status;
 568
 569         hdev->voice_setting = setting;
 570
 571         bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
 572
 573         if (hdev->notify)
 574                 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
 575
 576         return rp->status;
 577 }
 578
 579 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data,
 580                                      struct sk_buff *skb)
 581 {
 582         struct hci_ev_status *rp = data;
 583         __u16 setting;
 584         void *sent;
 585
 586         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 587
 588         if (rp->status)
 589                 return rp->status;
 590
 591         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
 592         if (!sent)
 593                 return rp->status;
 594
 595         setting = get_unaligned_le16(sent);
 596
 597         if (hdev->voice_setting == setting)
 598                 return rp->status;
 599
 600         hdev->voice_setting = setting;
 601
 602         bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
 603
 604         if (hdev->notify)
 605                 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
 606
 607         return rp->status;
 608 }
 609
 610 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data,
 611                                         struct sk_buff *skb)
 612 {
 613         struct hci_rp_read_num_supported_iac *rp = data;
 614
 615         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 616
 617         if (rp->status)
 618                 return rp->status;
 619
 620         hdev->num_iac = rp->num_iac;
 621
 622         bt_dev_dbg(hdev, "num iac %d", hdev->num_iac);
 623
 624         return rp->status;
 625 }
 626
 627 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data,
 628                                 struct sk_buff *skb)
 629 {
 630         struct hci_ev_status *rp = data;
 631         struct hci_cp_write_ssp_mode *sent;
 632
 633         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 634
 635         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
 636         if (!sent)
 637                 return rp->status;
 638
 639         hci_dev_lock(hdev);
 640
 641         if (!rp->status) {
 642                 if (sent->mode)
 643                         hdev->features[1][0] |= LMP_HOST_SSP;
 644                 else
 645                         hdev->features[1][0] &= ~LMP_HOST_SSP;
 646         }
 647
 648         if (!rp->status) {
 649                 if (sent->mode)
 650                         hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
 651                 else
 652                         hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
 653         }
 654
 655         hci_dev_unlock(hdev);
 656
 657         return rp->status;
 658 }
 659
 660 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data,
 661                                   struct sk_buff *skb)
 662 {
 663         struct hci_ev_status *rp = data;
 664         struct hci_cp_write_sc_support *sent;
 665
 666         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 667
 668         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
 669         if (!sent)
 670                 return rp->status;
 671
 672         hci_dev_lock(hdev);
 673
 674         if (!rp->status) {
 675                 if (sent->support)
 676                         hdev->features[1][0] |= LMP_HOST_SC;
 677                 else
 678                         hdev->features[1][0] &= ~LMP_HOST_SC;
 679         }
 680
 681         if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) {
 682                 if (sent->support)
 683                         hci_dev_set_flag(hdev, HCI_SC_ENABLED);
 684                 else
 685                         hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
 686         }
 687
 688         hci_dev_unlock(hdev);
 689
 690         return rp->status;
 691 }
 692
 693 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data,
 694                                     struct sk_buff *skb)
 695 {
 696         struct hci_rp_read_local_version *rp = data;
 697
 698         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 699
 700         if (rp->status)
 701                 return rp->status;
 702
 703         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 704             hci_dev_test_flag(hdev, HCI_CONFIG)) {
 705                 hdev->hci_ver = rp->hci_ver;
 706                 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
 707                 hdev->lmp_ver = rp->lmp_ver;
 708                 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
 709                 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
 710         }
 711
 712         return rp->status;
 713 }
 714
 715 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data,
 716                                    struct sk_buff *skb)
 717 {
 718         struct hci_rp_read_enc_key_size *rp = data;
 719         struct hci_conn *conn;
 720         u16 handle;
 721         u8 status = rp->status;
 722
 723         bt_dev_dbg(hdev, "status 0x%2.2x", status);
 724
 725         handle = le16_to_cpu(rp->handle);
 726
 727         hci_dev_lock(hdev);
 728
 729         conn = hci_conn_hash_lookup_handle(hdev, handle);
 730         if (!conn) {
 731                 status = 0xFF;
 732                 goto done;
 733         }
 734
 735         /* While unexpected, the read_enc_key_size command may fail. The most
 736          * secure approach is to then assume the key size is 0 to force a
 737          * disconnection.
 738          */
 739         if (status) {
 740                 bt_dev_err(hdev, "failed to read key size for handle %u",
 741                            handle);
 742                 conn->enc_key_size = 0;
 743         } else {
 744                 conn->enc_key_size = rp->key_size;
 745                 status = 0;
 746         }
 747
 748         hci_encrypt_cfm(conn, 0);
 749
 750 done:
 751         hci_dev_unlock(hdev);
 752
 753         return status;
 754 }
 755
 756 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data,
 757                                      struct sk_buff *skb)
 758 {
 759         struct hci_rp_read_local_commands *rp = data;
 760
 761         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 762
 763         if (rp->status)
 764                 return rp->status;
 765
 766         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 767             hci_dev_test_flag(hdev, HCI_CONFIG))
 768                 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
 769
 770         return rp->status;
 771 }
 772
 773 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data,
 774                                            struct sk_buff *skb)
 775 {
 776         struct hci_rp_read_auth_payload_to *rp = data;
 777         struct hci_conn *conn;
 778
 779         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 780
 781         if (rp->status)
 782                 return rp->status;
 783
 784         hci_dev_lock(hdev);
 785
 786         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 787         if (conn)
 788                 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
 789
 790         hci_dev_unlock(hdev);
 791
 792         return rp->status;
 793 }
 794
 795 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data,
 796                                             struct sk_buff *skb)
 797 {
 798         struct hci_rp_write_auth_payload_to *rp = data;
 799         struct hci_conn *conn;
 800         void *sent;
 801
 802         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 803
 804         if (rp->status)
 805                 return rp->status;
 806
 807         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
 808         if (!sent)
 809                 return rp->status;
 810
 811         hci_dev_lock(hdev);
 812
 813         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 814         if (conn)
 815                 conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
 816
 817         hci_dev_unlock(hdev);
 818
 819         return rp->status;
 820 }
 821
 822 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data,
 823                                      struct sk_buff *skb)
 824 {
 825         struct hci_rp_read_local_features *rp = data;
 826
 827         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 828
 829         if (rp->status)
 830                 return rp->status;
 831
 832         memcpy(hdev->features, rp->features, 8);
 833
 834         /* Adjust default settings according to features
 835          * supported by device. */
 836
 837         if (hdev->features[0][0] & LMP_3SLOT)
 838                 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
 839
 840         if (hdev->features[0][0] & LMP_5SLOT)
 841                 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
 842
 843         if (hdev->features[0][1] & LMP_HV2) {
 844                 hdev->pkt_type  |= (HCI_HV2);
 845                 hdev->esco_type |= (ESCO_HV2);
 846         }
 847
 848         if (hdev->features[0][1] & LMP_HV3) {
 849                 hdev->pkt_type  |= (HCI_HV3);
 850                 hdev->esco_type |= (ESCO_HV3);
 851         }
 852
 853         if (lmp_esco_capable(hdev))
 854                 hdev->esco_type |= (ESCO_EV3);
 855
 856         if (hdev->features[0][4] & LMP_EV4)
 857                 hdev->esco_type |= (ESCO_EV4);
 858
 859         if (hdev->features[0][4] & LMP_EV5)
 860                 hdev->esco_type |= (ESCO_EV5);
 861
 862         if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
 863                 hdev->esco_type |= (ESCO_2EV3);
 864
 865         if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
 866                 hdev->esco_type |= (ESCO_3EV3);
 867
 868         if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
 869                 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
 870
 871         return rp->status;
 872 }
 873
 874 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
 875                                          struct sk_buff *skb)
 876 {
 877         struct hci_rp_read_local_ext_features *rp = data;
 878
 879         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 880
 881         if (rp->status)
 882                 return rp->status;
 883
 884         if (hdev->max_page < rp->max_page) {
 885                 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
 886                              &hdev->quirks))
 887                         bt_dev_warn(hdev, "broken local ext features page 2");
 888                 else
 889                         hdev->max_page = rp->max_page;
 890         }
 891
 892         if (rp->page < HCI_MAX_PAGES)
 893                 memcpy(hdev->features[rp->page], rp->features, 8);
 894
 895         return rp->status;
 896 }
 897
 898 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data,
 899                                         struct sk_buff *skb)
 900 {
 901         struct hci_rp_read_flow_control_mode *rp = data;
 902
 903         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 904
 905         if (rp->status)
 906                 return rp->status;
 907
 908         hdev->flow_ctl_mode = rp->mode;
 909
 910         return rp->status;
 911 }
 912
 913 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data,
 914                                   struct sk_buff *skb)
 915 {
 916         struct hci_rp_read_buffer_size *rp = data;
 917
 918         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 919
 920         if (rp->status)
 921                 return rp->status;
 922
 923         hdev->acl_mtu  = __le16_to_cpu(rp->acl_mtu);
 924         hdev->sco_mtu  = rp->sco_mtu;
 925         hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
 926         hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
 927
 928         if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
 929                 hdev->sco_mtu  = 64;
 930                 hdev->sco_pkts = 8;
 931         }
 932
 933         hdev->acl_cnt = hdev->acl_pkts;
 934         hdev->sco_cnt = hdev->sco_pkts;
 935
 936         BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
 937                hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
 938
 939         return rp->status;
 940 }
 941
 942 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data,
 943                               struct sk_buff *skb)
 944 {
 945         struct hci_rp_read_bd_addr *rp = data;
 946
 947         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 948
 949         if (rp->status)
 950                 return rp->status;
 951
 952         if (test_bit(HCI_INIT, &hdev->flags))
 953                 bacpy(&hdev->bdaddr, &rp->bdaddr);
 954
 955         if (hci_dev_test_flag(hdev, HCI_SETUP))
 956                 bacpy(&hdev->setup_addr, &rp->bdaddr);
 957
 958         return rp->status;
 959 }
 960
 961 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data,
 962                                          struct sk_buff *skb)
 963 {
 964         struct hci_rp_read_local_pairing_opts *rp = data;
 965
 966         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 967
 968         if (rp->status)
 969                 return rp->status;
 970
 971         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 972             hci_dev_test_flag(hdev, HCI_CONFIG)) {
 973                 hdev->pairing_opts = rp->pairing_opts;
 974                 hdev->max_enc_key_size = rp->max_key_size;
 975         }
 976
 977         return rp->status;
 978 }
 979
 980 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data,
 981                                          struct sk_buff *skb)
 982 {
 983         struct hci_rp_read_page_scan_activity *rp = data;
 984
 985         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 986
 987         if (rp->status)
 988                 return rp->status;
 989
 990         if (test_bit(HCI_INIT, &hdev->flags)) {
 991                 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
 992                 hdev->page_scan_window = __le16_to_cpu(rp->window);
 993         }
 994
 995         return rp->status;
 996 }
 997
 998 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data,
 999                                           struct sk_buff *skb)
1000 {
1001         struct hci_ev_status *rp = data;
1002         struct hci_cp_write_page_scan_activity *sent;
1003
1004         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1005
1006         if (rp->status)
1007                 return rp->status;
1008
1009         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
1010         if (!sent)
1011                 return rp->status;
1012
1013         hdev->page_scan_interval = __le16_to_cpu(sent->interval);
1014         hdev->page_scan_window = __le16_to_cpu(sent->window);
1015
1016         return rp->status;
1017 }
1018
1019 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data,
1020                                      struct sk_buff *skb)
1021 {
1022         struct hci_rp_read_page_scan_type *rp = data;
1023
1024         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1025
1026         if (rp->status)
1027                 return rp->status;
1028
1029         if (test_bit(HCI_INIT, &hdev->flags))
1030                 hdev->page_scan_type = rp->type;
1031
1032         return rp->status;
1033 }
1034
1035 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data,
1036                                       struct sk_buff *skb)
1037 {
1038         struct hci_ev_status *rp = data;
1039         u8 *type;
1040
1041         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1042
1043         if (rp->status)
1044                 return rp->status;
1045
1046         type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
1047         if (type)
1048                 hdev->page_scan_type = *type;
1049
1050         return rp->status;
1051 }
1052
1053 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data,
1054                                       struct sk_buff *skb)
1055 {
1056         struct hci_rp_read_data_block_size *rp = data;
1057
1058         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1059
1060         if (rp->status)
1061                 return rp->status;
1062
1063         hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
1064         hdev->block_len = __le16_to_cpu(rp->block_len);
1065         hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
1066
1067         hdev->block_cnt = hdev->num_blocks;
1068
1069         BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
1070                hdev->block_cnt, hdev->block_len);
1071
1072         return rp->status;
1073 }
1074
1075 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data,
1076                             struct sk_buff *skb)
1077 {
1078         struct hci_rp_read_clock *rp = data;
1079         struct hci_cp_read_clock *cp;
1080         struct hci_conn *conn;
1081
1082         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1083
1084         if (rp->status)
1085                 return rp->status;
1086
1087         hci_dev_lock(hdev);
1088
1089         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
1090         if (!cp)
1091                 goto unlock;
1092
1093         if (cp->which == 0x00) {
1094                 hdev->clock = le32_to_cpu(rp->clock);
1095                 goto unlock;
1096         }
1097
1098         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1099         if (conn) {
1100                 conn->clock = le32_to_cpu(rp->clock);
1101                 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
1102         }
1103
1104 unlock:
1105         hci_dev_unlock(hdev);
1106         return rp->status;
1107 }
1108
1109 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data,
1110                                      struct sk_buff *skb)
1111 {
1112         struct hci_rp_read_local_amp_info *rp = data;
1113
1114         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1115
1116         if (rp->status)
1117                 return rp->status;
1118
1119         hdev->amp_status = rp->amp_status;
1120         hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
1121         hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
1122         hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
1123         hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
1124         hdev->amp_type = rp->amp_type;
1125         hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
1126         hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
1127         hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
1128         hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
1129
1130         return rp->status;
1131 }
1132
1133 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data,
1134                                        struct sk_buff *skb)
1135 {
1136         struct hci_rp_read_inq_rsp_tx_power *rp = data;
1137
1138         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1139
1140         if (rp->status)
1141                 return rp->status;
1142
1143         hdev->inq_tx_power = rp->tx_power;
1144
1145         return rp->status;
1146 }
1147
1148 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data,
1149                                              struct sk_buff *skb)
1150 {
1151         struct hci_rp_read_def_err_data_reporting *rp = data;
1152
1153         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1154
1155         if (rp->status)
1156                 return rp->status;
1157
1158         hdev->err_data_reporting = rp->err_data_reporting;
1159
1160         return rp->status;
1161 }
1162
1163 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data,
1164                                               struct sk_buff *skb)
1165 {
1166         struct hci_ev_status *rp = data;
1167         struct hci_cp_write_def_err_data_reporting *cp;
1168
1169         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1170
1171         if (rp->status)
1172                 return rp->status;
1173
1174         cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
1175         if (!cp)
1176                 return rp->status;
1177
1178         hdev->err_data_reporting = cp->err_data_reporting;
1179
1180         return rp->status;
1181 }
1182
1183 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data,
1184                                 struct sk_buff *skb)
1185 {
1186         struct hci_rp_pin_code_reply *rp = data;
1187         struct hci_cp_pin_code_reply *cp;
1188         struct hci_conn *conn;
1189
1190         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1191
1192         hci_dev_lock(hdev);
1193
1194         if (hci_dev_test_flag(hdev, HCI_MGMT))
1195                 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
1196
1197         if (rp->status)
1198                 goto unlock;
1199
1200         cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
1201         if (!cp)
1202                 goto unlock;
1203
1204         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1205         if (conn)
1206                 conn->pin_length = cp->pin_len;
1207
1208 unlock:
1209         hci_dev_unlock(hdev);
1210         return rp->status;
1211 }
1212
1213 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data,
1214                                     struct sk_buff *skb)
1215 {
1216         struct hci_rp_pin_code_neg_reply *rp = data;
1217
1218         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1219
1220         hci_dev_lock(hdev);
1221
1222         if (hci_dev_test_flag(hdev, HCI_MGMT))
1223                 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
1224                                                  rp->status);
1225
1226         hci_dev_unlock(hdev);
1227
1228         return rp->status;
1229 }
1230
1231 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data,
1232                                      struct sk_buff *skb)
1233 {
1234         struct hci_rp_le_read_buffer_size *rp = data;
1235
1236         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1237
1238         if (rp->status)
1239                 return rp->status;
1240
1241         hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
1242         hdev->le_pkts = rp->le_max_pkt;
1243
1244         hdev->le_cnt = hdev->le_pkts;
1245
1246         BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
1247
1248         return rp->status;
1249 }
1250
1251 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data,
1252                                         struct sk_buff *skb)
1253 {
1254         struct hci_rp_le_read_local_features *rp = data;
1255
1256         BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1257
1258         if (rp->status)
1259                 return rp->status;
1260
1261         memcpy(hdev->le_features, rp->features, 8);
1262
1263         return rp->status;
1264 }
1265
1266 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data,
1267                                       struct sk_buff *skb)
1268 {
1269         struct hci_rp_le_read_adv_tx_power *rp = data;
1270
1271         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1272
1273         if (rp->status)
1274                 return rp->status;
1275
1276         hdev->adv_tx_power = rp->tx_power;
1277
1278         return rp->status;
1279 }
1280
1281 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data,
1282                                     struct sk_buff *skb)
1283 {
1284         struct hci_rp_user_confirm_reply *rp = data;
1285
1286         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1287
1288         hci_dev_lock(hdev);
1289
1290         if (hci_dev_test_flag(hdev, HCI_MGMT))
1291                 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
1292                                                  rp->status);
1293
1294         hci_dev_unlock(hdev);
1295
1296         return rp->status;
1297 }
1298
1299 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data,
1300                                         struct sk_buff *skb)
1301 {
1302         struct hci_rp_user_confirm_reply *rp = data;
1303
1304         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1305
1306         hci_dev_lock(hdev);
1307
1308         if (hci_dev_test_flag(hdev, HCI_MGMT))
1309                 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1310                                                      ACL_LINK, 0, rp->status);
1311
1312         hci_dev_unlock(hdev);
1313
1314         return rp->status;
1315 }
1316
1317 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data,
1318                                     struct sk_buff *skb)
1319 {
1320         struct hci_rp_user_confirm_reply *rp = data;
1321
1322         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1323
1324         hci_dev_lock(hdev);
1325
1326         if (hci_dev_test_flag(hdev, HCI_MGMT))
1327                 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1328                                                  0, rp->status);
1329
1330         hci_dev_unlock(hdev);
1331
1332         return rp->status;
1333 }
1334
1335 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data,
1336                                         struct sk_buff *skb)
1337 {
1338         struct hci_rp_user_confirm_reply *rp = data;
1339
1340         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1341
1342         hci_dev_lock(hdev);
1343
1344         if (hci_dev_test_flag(hdev, HCI_MGMT))
1345                 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1346                                                      ACL_LINK, 0, rp->status);
1347
1348         hci_dev_unlock(hdev);
1349
1350         return rp->status;
1351 }
1352
1353 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data,
1354                                      struct sk_buff *skb)
1355 {
1356         struct hci_rp_read_local_oob_data *rp = data;
1357
1358         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1359
1360         return rp->status;
1361 }
1362
1363 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data,
1364                                          struct sk_buff *skb)
1365 {
1366         struct hci_rp_read_local_oob_ext_data *rp = data;
1367
1368         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1369
1370         return rp->status;
1371 }
1372
1373 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data,
1374                                     struct sk_buff *skb)
1375 {
1376         struct hci_ev_status *rp = data;
1377         bdaddr_t *sent;
1378
1379         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1380
1381         if (rp->status)
1382                 return rp->status;
1383
1384         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1385         if (!sent)
1386                 return rp->status;
1387
1388         hci_dev_lock(hdev);
1389
1390         bacpy(&hdev->random_addr, sent);
1391
1392         if (!bacmp(&hdev->rpa, sent)) {
1393                 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
1394                 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired,
1395                                    secs_to_jiffies(hdev->rpa_timeout));
1396         }
1397
1398         hci_dev_unlock(hdev);
1399
1400         return rp->status;
1401 }
1402
1403 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data,
1404                                     struct sk_buff *skb)
1405 {
1406         struct hci_ev_status *rp = data;
1407         struct hci_cp_le_set_default_phy *cp;
1408
1409         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1410
1411         if (rp->status)
1412                 return rp->status;
1413
1414         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1415         if (!cp)
1416                 return rp->status;
1417
1418         hci_dev_lock(hdev);
1419
1420         hdev->le_tx_def_phys = cp->tx_phys;
1421         hdev->le_rx_def_phys = cp->rx_phys;
1422
1423         hci_dev_unlock(hdev);
1424
1425         return rp->status;
1426 }
1427
1428 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data,
1429                                             struct sk_buff *skb)
1430 {
1431         struct hci_ev_status *rp = data;
1432         struct hci_cp_le_set_adv_set_rand_addr *cp;
1433         struct adv_info *adv;
1434
1435         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1436
1437         if (rp->status)
1438                 return rp->status;
1439
1440         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1441         /* Update only in case the adv instance since handle 0x00 shall be using
1442          * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
1443          * non-extended adverting.
1444          */
1445         if (!cp || !cp->handle)
1446                 return rp->status;
1447
1448         hci_dev_lock(hdev);
1449
1450         adv = hci_find_adv_instance(hdev, cp->handle);
1451         if (adv) {
1452                 bacpy(&adv->random_addr, &cp->bdaddr);
1453                 if (!bacmp(&hdev->rpa, &cp->bdaddr)) {
1454                         adv->rpa_expired = false;
1455                         queue_delayed_work(hdev->workqueue,
1456                                            &adv->rpa_expired_cb,
1457                                            secs_to_jiffies(hdev->rpa_timeout));
1458                 }
1459         }
1460
1461         hci_dev_unlock(hdev);
1462
1463         return rp->status;
1464 }
1465
1466 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data,
1467                                    struct sk_buff *skb)
1468 {
1469         struct hci_ev_status *rp = data;
1470         u8 *instance;
1471         int err;
1472
1473         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1474
1475         if (rp->status)
1476                 return rp->status;
1477
1478         instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET);
1479         if (!instance)
1480                 return rp->status;
1481
1482         hci_dev_lock(hdev);
1483
1484         err = hci_remove_adv_instance(hdev, *instance);
1485         if (!err)
1486                 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev,
1487                                          *instance);
1488
1489         hci_dev_unlock(hdev);
1490
1491         return rp->status;
1492 }
1493
1494 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data,
1495                                    struct sk_buff *skb)
1496 {
1497         struct hci_ev_status *rp = data;
1498         struct adv_info *adv, *n;
1499         int err;
1500
1501         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1502
1503         if (rp->status)
1504                 return rp->status;
1505
1506         if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS))
1507                 return rp->status;
1508
1509         hci_dev_lock(hdev);
1510
1511         list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1512                 u8 instance = adv->instance;
1513
1514                 err = hci_remove_adv_instance(hdev, instance);
1515                 if (!err)
1516                         mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd),
1517                                                  hdev, instance);
1518         }
1519
1520         hci_dev_unlock(hdev);
1521
1522         return rp->status;
1523 }
1524
1525 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data,
1526                                         struct sk_buff *skb)
1527 {
1528         struct hci_rp_le_read_transmit_power *rp = data;
1529
1530         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1531
1532         if (rp->status)
1533                 return rp->status;
1534
1535         hdev->min_le_tx_power = rp->min_le_tx_power;
1536         hdev->max_le_tx_power = rp->max_le_tx_power;
1537
1538         return rp->status;
1539 }
1540
1541 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data,
1542                                      struct sk_buff *skb)
1543 {
1544         struct hci_ev_status *rp = data;
1545         struct hci_cp_le_set_privacy_mode *cp;
1546         struct hci_conn_params *params;
1547
1548         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1549
1550         if (rp->status)
1551                 return rp->status;
1552
1553         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE);
1554         if (!cp)
1555                 return rp->status;
1556
1557         hci_dev_lock(hdev);
1558
1559         params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type);
1560         if (params)
1561                 params->privacy_mode = cp->mode;
1562
1563         hci_dev_unlock(hdev);
1564
1565         return rp->status;
1566 }
1567
1568 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data,
1569                                    struct sk_buff *skb)
1570 {
1571         struct hci_ev_status *rp = data;
1572         __u8 *sent;
1573
1574         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1575
1576         if (rp->status)
1577                 return rp->status;
1578
1579         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1580         if (!sent)
1581                 return rp->status;
1582
1583         hci_dev_lock(hdev);
1584
1585         /* If we're doing connection initiation as peripheral. Set a
1586          * timeout in case something goes wrong.
1587          */
1588         if (*sent) {
1589                 struct hci_conn *conn;
1590
1591                 hci_dev_set_flag(hdev, HCI_LE_ADV);
1592
1593                 conn = hci_lookup_le_connect(hdev);
1594                 if (conn)
1595                         queue_delayed_work(hdev->workqueue,
1596                                            &conn->le_conn_timeout,
1597                                            conn->conn_timeout);
1598         } else {
1599                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1600         }
1601
1602         hci_dev_unlock(hdev);
1603
1604         return rp->status;
1605 }
1606
1607 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
1608                                        struct sk_buff *skb)
1609 {
1610         struct hci_cp_le_set_ext_adv_enable *cp;
1611         struct hci_cp_ext_adv_set *set;
1612         struct adv_info *adv = NULL, *n;
1613         struct hci_ev_status *rp = data;
1614
1615         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1616
1617         if (rp->status)
1618                 return rp->status;
1619
1620         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1621         if (!cp)
1622                 return rp->status;
1623
1624         set = (void *)cp->data;
1625
1626         hci_dev_lock(hdev);
1627
1628         if (cp->num_of_sets)
1629                 adv = hci_find_adv_instance(hdev, set->handle);
1630
1631         if (cp->enable) {
1632                 struct hci_conn *conn;
1633
1634                 hci_dev_set_flag(hdev, HCI_LE_ADV);
1635
1636                 if (adv)
1637                         adv->enabled = true;
1638
1639                 conn = hci_lookup_le_connect(hdev);
1640                 if (conn)
1641                         queue_delayed_work(hdev->workqueue,
1642                                            &conn->le_conn_timeout,
1643                                            conn->conn_timeout);
1644         } else {
1645                 if (cp->num_of_sets) {
1646                         if (adv)
1647                                 adv->enabled = false;
1648
1649                         /* If just one instance was disabled check if there are
1650                          * any other instance enabled before clearing HCI_LE_ADV
1651                          */
1652                         list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1653                                                  list) {
1654                                 if (adv->enabled)
1655                                         goto unlock;
1656                         }
1657                 } else {
1658                         /* All instances shall be considered disabled */
1659                         list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1660                                                  list)
1661                                 adv->enabled = false;
1662                 }
1663
1664                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1665         }
1666
1667 unlock:
1668         hci_dev_unlock(hdev);
1669         return rp->status;
1670 }
1671
1672 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data,
1673                                    struct sk_buff *skb)
1674 {
1675         struct hci_cp_le_set_scan_param *cp;
1676         struct hci_ev_status *rp = data;
1677
1678         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1679
1680         if (rp->status)
1681                 return rp->status;
1682
1683         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1684         if (!cp)
1685                 return rp->status;
1686
1687         hci_dev_lock(hdev);
1688
1689         hdev->le_scan_type = cp->type;
1690
1691         hci_dev_unlock(hdev);
1692
1693         return rp->status;
1694 }
1695
1696 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data,
1697                                        struct sk_buff *skb)
1698 {
1699         struct hci_cp_le_set_ext_scan_params *cp;
1700         struct hci_ev_status *rp = data;
1701         struct hci_cp_le_scan_phy_params *phy_param;
1702
1703         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1704
1705         if (rp->status)
1706                 return rp->status;
1707
1708         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1709         if (!cp)
1710                 return rp->status;
1711
1712         phy_param = (void *)cp->data;
1713
1714         hci_dev_lock(hdev);
1715
1716         hdev->le_scan_type = phy_param->type;
1717
1718         hci_dev_unlock(hdev);
1719
1720         return rp->status;
1721 }
1722
1723 static bool has_pending_adv_report(struct hci_dev *hdev)
1724 {
1725         struct discovery_state *d = &hdev->discovery;
1726
1727         return bacmp(&d->last_adv_addr, BDADDR_ANY);
1728 }
1729
1730 static void clear_pending_adv_report(struct hci_dev *hdev)
1731 {
1732         struct discovery_state *d = &hdev->discovery;
1733
1734         bacpy(&d->last_adv_addr, BDADDR_ANY);
1735         d->last_adv_data_len = 0;
1736 }
1737
1738 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1739                                      u8 bdaddr_type, s8 rssi, u32 flags,
1740                                      u8 *data, u8 len)
1741 {
1742         struct discovery_state *d = &hdev->discovery;
1743
1744         if (len > HCI_MAX_AD_LENGTH)
1745                 return;
1746
1747         bacpy(&d->last_adv_addr, bdaddr);
1748         d->last_adv_addr_type = bdaddr_type;
1749         d->last_adv_rssi = rssi;
1750         d->last_adv_flags = flags;
1751         memcpy(d->last_adv_data, data, len);
1752         d->last_adv_data_len = len;
1753 }
1754
1755 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1756 {
1757         hci_dev_lock(hdev);
1758
1759         switch (enable) {
1760         case LE_SCAN_ENABLE:
1761                 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1762                 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1763                         clear_pending_adv_report(hdev);
1764                 if (hci_dev_test_flag(hdev, HCI_MESH))
1765                         hci_discovery_set_state(hdev, DISCOVERY_FINDING);
1766                 break;
1767
1768         case LE_SCAN_DISABLE:
1769                 /* We do this here instead of when setting DISCOVERY_STOPPED
1770                  * since the latter would potentially require waiting for
1771                  * inquiry to stop too.
1772                  */
1773                 if (has_pending_adv_report(hdev)) {
1774                         struct discovery_state *d = &hdev->discovery;
1775
1776                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1777                                           d->last_adv_addr_type, NULL,
1778                                           d->last_adv_rssi, d->last_adv_flags,
1779                                           d->last_adv_data,
1780                                           d->last_adv_data_len, NULL, 0, 0);
1781                 }
1782
1783                 /* Cancel this timer so that we don't try to disable scanning
1784                  * when it's already disabled.
1785                  */
1786                 cancel_delayed_work(&hdev->le_scan_disable);
1787
1788                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1789
1790                 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1791                  * interrupted scanning due to a connect request. Mark
1792                  * therefore discovery as stopped.
1793                  */
1794                 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1795 #ifndef TIZEN_BT /* The below line is kernel bug. */
1796                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1797 #else
1798                         hci_le_discovery_set_state(hdev, DISCOVERY_STOPPED);
1799 #endif
1800                 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1801                          hdev->discovery.state == DISCOVERY_FINDING)
1802                         queue_work(hdev->workqueue, &hdev->reenable_adv_work);
1803
1804                 break;
1805
1806         default:
1807                 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1808                            enable);
1809                 break;
1810         }
1811
1812         hci_dev_unlock(hdev);
1813 }
1814
1815 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1816                                     struct sk_buff *skb)
1817 {
1818         struct hci_cp_le_set_scan_enable *cp;
1819         struct hci_ev_status *rp = data;
1820
1821         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1822
1823         if (rp->status)
1824                 return rp->status;
1825
1826         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1827         if (!cp)
1828                 return rp->status;
1829
1830         le_set_scan_enable_complete(hdev, cp->enable);
1831
1832         return rp->status;
1833 }
1834
1835 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1836                                         struct sk_buff *skb)
1837 {
1838         struct hci_cp_le_set_ext_scan_enable *cp;
1839         struct hci_ev_status *rp = data;
1840
1841         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1842
1843         if (rp->status)
1844                 return rp->status;
1845
1846         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1847         if (!cp)
1848                 return rp->status;
1849
1850         le_set_scan_enable_complete(hdev, cp->enable);
1851
1852         return rp->status;
1853 }
1854
1855 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1856                                       struct sk_buff *skb)
1857 {
1858         struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1859
1860         bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1861                    rp->num_of_sets);
1862
1863         if (rp->status)
1864                 return rp->status;
1865
1866         hdev->le_num_of_adv_sets = rp->num_of_sets;
1867
1868         return rp->status;
1869 }
1870
1871 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1872                                           struct sk_buff *skb)
1873 {
1874         struct hci_rp_le_read_accept_list_size *rp = data;
1875
1876         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1877
1878         if (rp->status)
1879                 return rp->status;
1880
1881         hdev->le_accept_list_size = rp->size;
1882
1883         return rp->status;
1884 }
1885
1886 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1887                                       struct sk_buff *skb)
1888 {
1889         struct hci_ev_status *rp = data;
1890
1891         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1892
1893         if (rp->status)
1894                 return rp->status;
1895
1896         hci_dev_lock(hdev);
1897         hci_bdaddr_list_clear(&hdev->le_accept_list);
1898         hci_dev_unlock(hdev);
1899
1900         return rp->status;
1901 }
1902
1903 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1904                                        struct sk_buff *skb)
1905 {
1906         struct hci_cp_le_add_to_accept_list *sent;
1907         struct hci_ev_status *rp = data;
1908
1909         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1910
1911         if (rp->status)
1912                 return rp->status;
1913
1914         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1915         if (!sent)
1916                 return rp->status;
1917
1918         hci_dev_lock(hdev);
1919         hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
1920                             sent->bdaddr_type);
1921         hci_dev_unlock(hdev);
1922
1923         return rp->status;
1924 }
1925
1926 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1927                                          struct sk_buff *skb)
1928 {
1929         struct hci_cp_le_del_from_accept_list *sent;
1930         struct hci_ev_status *rp = data;
1931
1932         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1933
1934         if (rp->status)
1935                 return rp->status;
1936
1937         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1938         if (!sent)
1939                 return rp->status;
1940
1941         hci_dev_lock(hdev);
1942         hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
1943                             sent->bdaddr_type);
1944         hci_dev_unlock(hdev);
1945
1946         return rp->status;
1947 }
1948
1949 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1950                                           struct sk_buff *skb)
1951 {
1952         struct hci_rp_le_read_supported_states *rp = data;
1953
1954         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1955
1956         if (rp->status)
1957                 return rp->status;
1958
1959         memcpy(hdev->le_states, rp->le_states, 8);
1960
1961         return rp->status;
1962 }
1963
1964 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
1965                                       struct sk_buff *skb)
1966 {
1967         struct hci_rp_le_read_def_data_len *rp = data;
1968
1969         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1970
1971         if (rp->status)
1972                 return rp->status;
1973
1974         hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1975         hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1976
1977         return rp->status;
1978 }
1979
1980 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
1981                                        struct sk_buff *skb)
1982 {
1983         struct hci_cp_le_write_def_data_len *sent;
1984         struct hci_ev_status *rp = data;
1985
1986         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1987
1988         if (rp->status)
1989                 return rp->status;
1990
1991         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1992         if (!sent)
1993                 return rp->status;
1994
1995         hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
1996         hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
1997
1998         return rp->status;
1999 }
2000
2001 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
2002                                        struct sk_buff *skb)
2003 {
2004         struct hci_cp_le_add_to_resolv_list *sent;
2005         struct hci_ev_status *rp = data;
2006
2007         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2008
2009         if (rp->status)
2010                 return rp->status;
2011
2012         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
2013         if (!sent)
2014                 return rp->status;
2015
2016         hci_dev_lock(hdev);
2017         hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2018                                 sent->bdaddr_type, sent->peer_irk,
2019                                 sent->local_irk);
2020         hci_dev_unlock(hdev);
2021
2022         return rp->status;
2023 }
2024
2025 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
2026                                          struct sk_buff *skb)
2027 {
2028         struct hci_cp_le_del_from_resolv_list *sent;
2029         struct hci_ev_status *rp = data;
2030
2031         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2032
2033         if (rp->status)
2034                 return rp->status;
2035
2036         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
2037         if (!sent)
2038                 return rp->status;
2039
2040         hci_dev_lock(hdev);
2041         hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2042                             sent->bdaddr_type);
2043         hci_dev_unlock(hdev);
2044
2045         return rp->status;
2046 }
2047
2048 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2049                                       struct sk_buff *skb)
2050 {
2051         struct hci_ev_status *rp = data;
2052
2053         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2054
2055         if (rp->status)
2056                 return rp->status;
2057
2058         hci_dev_lock(hdev);
2059         hci_bdaddr_list_clear(&hdev->le_resolv_list);
2060         hci_dev_unlock(hdev);
2061
2062         return rp->status;
2063 }
2064
2065 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2066                                           struct sk_buff *skb)
2067 {
2068         struct hci_rp_le_read_resolv_list_size *rp = data;
2069
2070         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2071
2072         if (rp->status)
2073                 return rp->status;
2074
2075         hdev->le_resolv_list_size = rp->size;
2076
2077         return rp->status;
2078 }
2079
2080 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2081                                                struct sk_buff *skb)
2082 {
2083         struct hci_ev_status *rp = data;
2084         __u8 *sent;
2085
2086         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2087
2088         if (rp->status)
2089                 return rp->status;
2090
2091         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2092         if (!sent)
2093                 return rp->status;
2094
2095         hci_dev_lock(hdev);
2096
2097         if (*sent)
2098                 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2099         else
2100                 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2101
2102         hci_dev_unlock(hdev);
2103
2104         return rp->status;
2105 }
2106
2107 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2108                                       struct sk_buff *skb)
2109 {
2110         struct hci_rp_le_read_max_data_len *rp = data;
2111
2112         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2113
2114         if (rp->status)
2115                 return rp->status;
2116
2117         hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2118         hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2119         hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2120         hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2121
2122         return rp->status;
2123 }
2124
2125 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2126                                          struct sk_buff *skb)
2127 {
2128         struct hci_cp_write_le_host_supported *sent;
2129         struct hci_ev_status *rp = data;
2130
2131         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2132
2133         if (rp->status)
2134                 return rp->status;
2135
2136         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2137         if (!sent)
2138                 return rp->status;
2139
2140         hci_dev_lock(hdev);
2141
2142         if (sent->le) {
2143                 hdev->features[1][0] |= LMP_HOST_LE;
2144                 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2145         } else {
2146                 hdev->features[1][0] &= ~LMP_HOST_LE;
2147                 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2148                 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2149         }
2150
2151         if (sent->simul)
2152                 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2153         else
2154                 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2155
2156         hci_dev_unlock(hdev);
2157
2158         return rp->status;
2159 }
2160
2161 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2162                                struct sk_buff *skb)
2163 {
2164         struct hci_cp_le_set_adv_param *cp;
2165         struct hci_ev_status *rp = data;
2166
2167         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2168
2169         if (rp->status)
2170                 return rp->status;
2171
2172         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2173         if (!cp)
2174                 return rp->status;
2175
2176         hci_dev_lock(hdev);
2177         hdev->adv_addr_type = cp->own_address_type;
2178         hci_dev_unlock(hdev);
2179
2180         return rp->status;
2181 }
2182
2183 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2184                                    struct sk_buff *skb)
2185 {
2186         struct hci_rp_le_set_ext_adv_params *rp = data;
2187         struct hci_cp_le_set_ext_adv_params *cp;
2188         struct adv_info *adv_instance;
2189
2190         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2191
2192         if (rp->status)
2193                 return rp->status;
2194
2195         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2196         if (!cp)
2197                 return rp->status;
2198
2199         hci_dev_lock(hdev);
2200         hdev->adv_addr_type = cp->own_addr_type;
2201         if (!cp->handle) {
2202                 /* Store in hdev for instance 0 */
2203                 hdev->adv_tx_power = rp->tx_power;
2204         } else {
2205                 adv_instance = hci_find_adv_instance(hdev, cp->handle);
2206                 if (adv_instance)
2207                         adv_instance->tx_power = rp->tx_power;
2208         }
2209         /* Update adv data as tx power is known now */
2210         hci_update_adv_data(hdev, cp->handle);
2211
2212         hci_dev_unlock(hdev);
2213
2214         return rp->status;
2215 }
2216
2217 #ifdef TIZEN_BT
2218 static u8 hci_cc_enable_rssi(struct hci_dev *hdev, void *data,
2219                              struct sk_buff *skb)
2220 {
2221         struct hci_cc_rsp_enable_rssi *rp = data;
2222
2223         BT_DBG("hci_cc_enable_rssi - %s status 0x%2.2x Event_LE_ext_Opcode 0x%2.2x",
2224                hdev->name, rp->status, rp->le_ext_opcode);
2225
2226         mgmt_enable_rssi_cc(hdev, rp, rp->status);
2227
2228         return rp->status;
2229 }
2230
2231 static u8 hci_cc_get_raw_rssi(struct hci_dev *hdev, void *data,
2232                               struct sk_buff *skb)
2233 {
2234         struct hci_cc_rp_get_raw_rssi *rp = data;
2235
2236         BT_DBG("hci_cc_get_raw_rssi- %s Get Raw Rssi Response[%2.2x %4.4x %2.2X]",
2237                hdev->name, rp->status, rp->conn_handle, rp->rssi_dbm);
2238
2239         mgmt_raw_rssi_response(hdev, rp, rp->status);
2240
2241         return rp->status;
2242 }
2243
2244 static void hci_vendor_specific_group_ext_evt(struct hci_dev *hdev,
2245                                               struct sk_buff *skb)
2246 {
2247         struct hci_ev_ext_vendor_specific *ev = (void *)skb->data;
2248         __u8 event_le_ext_sub_code;
2249
2250         BT_DBG("RSSI event LE_META_VENDOR_SPECIFIC_GROUP_EVENT: %X",
2251                LE_META_VENDOR_SPECIFIC_GROUP_EVENT);
2252
2253         skb_pull(skb, sizeof(*ev));
2254         event_le_ext_sub_code = ev->event_le_ext_sub_code;
2255
2256         switch (event_le_ext_sub_code) {
2257         case LE_RSSI_LINK_ALERT:
2258                 BT_DBG("RSSI event LE_RSSI_LINK_ALERT %X",
2259                        LE_RSSI_LINK_ALERT);
2260                 mgmt_rssi_alert_evt(hdev, skb);
2261                 break;
2262
2263         default:
2264                 break;
2265         }
2266 }
2267
2268 static void hci_vendor_specific_evt(struct hci_dev *hdev, void *data,
2269                                     struct sk_buff *skb)
2270 {
2271         struct hci_ev_vendor_specific *ev = (void *)skb->data;
2272         __u8 event_sub_code;
2273
2274         BT_DBG("hci_vendor_specific_evt");
2275
2276         skb_pull(skb, sizeof(*ev));
2277         event_sub_code = ev->event_sub_code;
2278
2279         switch (event_sub_code) {
2280         case LE_META_VENDOR_SPECIFIC_GROUP_EVENT:
2281                 hci_vendor_specific_group_ext_evt(hdev, skb);
2282                 break;
2283
2284         default:
2285                 break;
2286         }
2287 }
2288 #endif
2289
2290 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2291                            struct sk_buff *skb)
2292 {
2293         struct hci_rp_read_rssi *rp = data;
2294         struct hci_conn *conn;
2295
2296         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2297
2298         if (rp->status)
2299                 return rp->status;
2300
2301         hci_dev_lock(hdev);
2302
2303         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2304         if (conn)
2305                 conn->rssi = rp->rssi;
2306
2307         hci_dev_unlock(hdev);
2308
2309         return rp->status;
2310 }
2311
2312 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2313                                struct sk_buff *skb)
2314 {
2315         struct hci_cp_read_tx_power *sent;
2316         struct hci_rp_read_tx_power *rp = data;
2317         struct hci_conn *conn;
2318
2319         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2320
2321         if (rp->status)
2322                 return rp->status;
2323
2324         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2325         if (!sent)
2326                 return rp->status;
2327
2328         hci_dev_lock(hdev);
2329
2330         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2331         if (!conn)
2332                 goto unlock;
2333
2334         switch (sent->type) {
2335         case 0x00:
2336                 conn->tx_power = rp->tx_power;
2337                 break;
2338         case 0x01:
2339                 conn->max_tx_power = rp->tx_power;
2340                 break;
2341         }
2342
2343 unlock:
2344         hci_dev_unlock(hdev);
2345         return rp->status;
2346 }
2347
2348 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2349                                       struct sk_buff *skb)
2350 {
2351         struct hci_ev_status *rp = data;
2352         u8 *mode;
2353
2354         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2355
2356         if (rp->status)
2357                 return rp->status;
2358
2359         mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2360         if (mode)
2361                 hdev->ssp_debug_mode = *mode;
2362
2363         return rp->status;
2364 }
2365
2366 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2367 {
2368         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2369
2370         if (status) {
2371                 hci_conn_check_pending(hdev);
2372                 return;
2373         }
2374
2375         set_bit(HCI_INQUIRY, &hdev->flags);
2376 }
2377
2378 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2379 {
2380         struct hci_cp_create_conn *cp;
2381         struct hci_conn *conn;
2382
2383         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2384
2385         cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2386         if (!cp)
2387                 return;
2388
2389         hci_dev_lock(hdev);
2390
2391         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2392
2393         bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2394
2395         if (status) {
2396                 if (conn && conn->state == BT_CONNECT) {
2397                         if (status != 0x0c || conn->attempt > 2) {
2398                                 conn->state = BT_CLOSED;
2399                                 hci_connect_cfm(conn, status);
2400                                 hci_conn_del(conn);
2401                         } else
2402                                 conn->state = BT_CONNECT2;
2403                 }
2404         } else {
2405                 if (!conn) {
2406                         conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
2407                                             HCI_ROLE_MASTER);
2408                         if (!conn)
2409                                 bt_dev_err(hdev, "no memory for new connection");
2410                 }
2411         }
2412
2413         hci_dev_unlock(hdev);
2414 }
2415
2416 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2417 {
2418         struct hci_cp_add_sco *cp;
2419         struct hci_conn *acl, *sco;
2420         __u16 handle;
2421
2422         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2423
2424         if (!status)
2425                 return;
2426
2427         cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2428         if (!cp)
2429                 return;
2430
2431         handle = __le16_to_cpu(cp->handle);
2432
2433         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2434
2435         hci_dev_lock(hdev);
2436
2437         acl = hci_conn_hash_lookup_handle(hdev, handle);
2438         if (acl) {
2439                 sco = acl->link;
2440                 if (sco) {
2441                         sco->state = BT_CLOSED;
2442
2443                         hci_connect_cfm(sco, status);
2444                         hci_conn_del(sco);
2445                 }
2446         }
2447
2448         hci_dev_unlock(hdev);
2449 }
2450
2451 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2452 {
2453         struct hci_cp_auth_requested *cp;
2454         struct hci_conn *conn;
2455
2456         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2457
2458         if (!status)
2459                 return;
2460
2461         cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2462         if (!cp)
2463                 return;
2464
2465         hci_dev_lock(hdev);
2466
2467         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2468         if (conn) {
2469                 if (conn->state == BT_CONFIG) {
2470                         hci_connect_cfm(conn, status);
2471                         hci_conn_drop(conn);
2472                 }
2473         }
2474
2475         hci_dev_unlock(hdev);
2476 }
2477
2478 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2479 {
2480         struct hci_cp_set_conn_encrypt *cp;
2481         struct hci_conn *conn;
2482
2483         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2484
2485         if (!status)
2486                 return;
2487
2488         cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2489         if (!cp)
2490                 return;
2491
2492         hci_dev_lock(hdev);
2493
2494         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2495         if (conn) {
2496                 if (conn->state == BT_CONFIG) {
2497                         hci_connect_cfm(conn, status);
2498                         hci_conn_drop(conn);
2499                 }
2500         }
2501
2502         hci_dev_unlock(hdev);
2503 }
2504
2505 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2506                                     struct hci_conn *conn)
2507 {
2508         if (conn->state != BT_CONFIG || !conn->out)
2509                 return 0;
2510
2511         if (conn->pending_sec_level == BT_SECURITY_SDP)
2512                 return 0;
2513
2514         /* Only request authentication for SSP connections or non-SSP
2515          * devices with sec_level MEDIUM or HIGH or if MITM protection
2516          * is requested.
2517          */
2518         if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2519             conn->pending_sec_level != BT_SECURITY_FIPS &&
2520             conn->pending_sec_level != BT_SECURITY_HIGH &&
2521             conn->pending_sec_level != BT_SECURITY_MEDIUM)
2522                 return 0;
2523
2524         return 1;
2525 }
2526
2527 static int hci_resolve_name(struct hci_dev *hdev,
2528                                    struct inquiry_entry *e)
2529 {
2530         struct hci_cp_remote_name_req cp;
2531
2532         memset(&cp, 0, sizeof(cp));
2533
2534         bacpy(&cp.bdaddr, &e->data.bdaddr);
2535         cp.pscan_rep_mode = e->data.pscan_rep_mode;
2536         cp.pscan_mode = e->data.pscan_mode;
2537         cp.clock_offset = e->data.clock_offset;
2538
2539         return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2540 }
2541
2542 static bool hci_resolve_next_name(struct hci_dev *hdev)
2543 {
2544         struct discovery_state *discov = &hdev->discovery;
2545         struct inquiry_entry *e;
2546
2547         if (list_empty(&discov->resolve))
2548                 return false;
2549
2550         /* We should stop if we already spent too much time resolving names. */
2551         if (time_after(jiffies, discov->name_resolve_timeout)) {
2552                 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2553                 return false;
2554         }
2555
2556         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2557         if (!e)
2558                 return false;
2559
2560         if (hci_resolve_name(hdev, e) == 0) {
2561                 e->name_state = NAME_PENDING;
2562                 return true;
2563         }
2564
2565         return false;
2566 }
2567
2568 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2569                                    bdaddr_t *bdaddr, u8 *name, u8 name_len)
2570 {
2571         struct discovery_state *discov = &hdev->discovery;
2572         struct inquiry_entry *e;
2573
2574 #ifdef TIZEN_BT
2575         /* Update the mgmt connected state if necessary. Be careful with
2576          * conn objects that exist but are not (yet) connected however.
2577          * Only those in BT_CONFIG or BT_CONNECTED states can be
2578          * considered connected.
2579          */
2580         if (conn &&
2581             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) {
2582                 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2583                         mgmt_device_connected(hdev, conn, 0, name, name_len);
2584                 else
2585                         mgmt_device_name_update(hdev, bdaddr, name, name_len);
2586         }
2587 #else
2588         if (conn &&
2589             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2590             !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2591                 mgmt_device_connected(hdev, conn, name, name_len);
2592 #endif
2593
2594         if (discov->state == DISCOVERY_STOPPED)
2595                 return;
2596
2597         if (discov->state == DISCOVERY_STOPPING)
2598                 goto discov_complete;
2599
2600         if (discov->state != DISCOVERY_RESOLVING)
2601                 return;
2602
2603         e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2604         /* If the device was not found in a list of found devices names of which
2605          * are pending. there is no need to continue resolving a next name as it
2606          * will be done upon receiving another Remote Name Request Complete
2607          * Event */
2608         if (!e)
2609                 return;
2610
2611         list_del(&e->list);
2612
2613         e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2614         mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2615                          name, name_len);
2616
2617         if (hci_resolve_next_name(hdev))
2618                 return;
2619
2620 discov_complete:
2621         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2622 }
2623
2624 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2625 {
2626         struct hci_cp_remote_name_req *cp;
2627         struct hci_conn *conn;
2628
2629         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2630
2631         /* If successful wait for the name req complete event before
2632          * checking for the need to do authentication */
2633         if (!status)
2634                 return;
2635
2636         cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2637         if (!cp)
2638                 return;
2639
2640         hci_dev_lock(hdev);
2641
2642         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2643
2644         if (hci_dev_test_flag(hdev, HCI_MGMT))
2645                 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2646
2647         if (!conn)
2648                 goto unlock;
2649
2650         if (!hci_outgoing_auth_needed(hdev, conn))
2651                 goto unlock;
2652
2653         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2654                 struct hci_cp_auth_requested auth_cp;
2655
2656                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2657
2658                 auth_cp.handle = __cpu_to_le16(conn->handle);
2659                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2660                              sizeof(auth_cp), &auth_cp);
2661         }
2662
2663 unlock:
2664         hci_dev_unlock(hdev);
2665 }
2666
2667 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2668 {
2669         struct hci_cp_read_remote_features *cp;
2670         struct hci_conn *conn;
2671
2672         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2673
2674         if (!status)
2675                 return;
2676
2677         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2678         if (!cp)
2679                 return;
2680
2681         hci_dev_lock(hdev);
2682
2683         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2684         if (conn) {
2685                 if (conn->state == BT_CONFIG) {
2686                         hci_connect_cfm(conn, status);
2687                         hci_conn_drop(conn);
2688                 }
2689         }
2690
2691         hci_dev_unlock(hdev);
2692 }
2693
2694 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2695 {
2696         struct hci_cp_read_remote_ext_features *cp;
2697         struct hci_conn *conn;
2698
2699         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2700
2701         if (!status)
2702                 return;
2703
2704         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2705         if (!cp)
2706                 return;
2707
2708         hci_dev_lock(hdev);
2709
2710         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2711         if (conn) {
2712                 if (conn->state == BT_CONFIG) {
2713                         hci_connect_cfm(conn, status);
2714                         hci_conn_drop(conn);
2715                 }
2716         }
2717
2718         hci_dev_unlock(hdev);
2719 }
2720
2721 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2722 {
2723         struct hci_cp_setup_sync_conn *cp;
2724         struct hci_conn *acl, *sco;
2725         __u16 handle;
2726
2727         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2728
2729         if (!status)
2730                 return;
2731
2732         cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2733         if (!cp)
2734                 return;
2735
2736         handle = __le16_to_cpu(cp->handle);
2737
2738         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2739
2740         hci_dev_lock(hdev);
2741
2742         acl = hci_conn_hash_lookup_handle(hdev, handle);
2743         if (acl) {
2744                 sco = acl->link;
2745                 if (sco) {
2746                         sco->state = BT_CLOSED;
2747
2748                         hci_connect_cfm(sco, status);
2749                         hci_conn_del(sco);
2750                 }
2751         }
2752
2753         hci_dev_unlock(hdev);
2754 }
2755
2756 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2757 {
2758         struct hci_cp_enhanced_setup_sync_conn *cp;
2759         struct hci_conn *acl, *sco;
2760         __u16 handle;
2761
2762         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2763
2764         if (!status)
2765                 return;
2766
2767         cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2768         if (!cp)
2769                 return;
2770
2771         handle = __le16_to_cpu(cp->handle);
2772
2773         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2774
2775         hci_dev_lock(hdev);
2776
2777         acl = hci_conn_hash_lookup_handle(hdev, handle);
2778         if (acl) {
2779                 sco = acl->link;
2780                 if (sco) {
2781                         sco->state = BT_CLOSED;
2782
2783                         hci_connect_cfm(sco, status);
2784                         hci_conn_del(sco);
2785                 }
2786         }
2787
2788         hci_dev_unlock(hdev);
2789 }
2790
2791 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2792 {
2793         struct hci_cp_sniff_mode *cp;
2794         struct hci_conn *conn;
2795
2796         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2797
2798         if (!status)
2799                 return;
2800
2801         cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2802         if (!cp)
2803                 return;
2804
2805         hci_dev_lock(hdev);
2806
2807         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2808         if (conn) {
2809                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2810
2811                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2812                         hci_sco_setup(conn, status);
2813         }
2814
2815         hci_dev_unlock(hdev);
2816 }
2817
2818 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2819 {
2820         struct hci_cp_exit_sniff_mode *cp;
2821         struct hci_conn *conn;
2822
2823         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2824
2825         if (!status)
2826                 return;
2827
2828         cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2829         if (!cp)
2830                 return;
2831
2832         hci_dev_lock(hdev);
2833
2834         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2835         if (conn) {
2836                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2837
2838                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2839                         hci_sco_setup(conn, status);
2840         }
2841
2842         hci_dev_unlock(hdev);
2843 }
2844
2845 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2846 {
2847         struct hci_cp_disconnect *cp;
2848         struct hci_conn_params *params;
2849         struct hci_conn *conn;
2850         bool mgmt_conn;
2851
2852         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2853
2854         /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2855          * otherwise cleanup the connection immediately.
2856          */
2857         if (!status && !hdev->suspended)
2858                 return;
2859
2860         cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2861         if (!cp)
2862                 return;
2863
2864         hci_dev_lock(hdev);
2865
2866         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2867         if (!conn)
2868                 goto unlock;
2869
2870         if (status) {
2871                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2872                                        conn->dst_type, status);
2873
2874                 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2875                         hdev->cur_adv_instance = conn->adv_instance;
2876                         hci_enable_advertising(hdev);
2877                 }
2878
2879                 goto done;
2880         }
2881
2882         mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2883
2884         if (conn->type == ACL_LINK) {
2885                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2886                         hci_remove_link_key(hdev, &conn->dst);
2887         }
2888
2889         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2890         if (params) {
2891                 switch (params->auto_connect) {
2892                 case HCI_AUTO_CONN_LINK_LOSS:
2893                         if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2894                                 break;
2895                         fallthrough;
2896
2897                 case HCI_AUTO_CONN_DIRECT:
2898                 case HCI_AUTO_CONN_ALWAYS:
2899                         list_del_init(&params->action);
2900                         list_add(&params->action, &hdev->pend_le_conns);
2901                         break;
2902
2903                 default:
2904                         break;
2905                 }
2906         }
2907
2908         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2909                                  cp->reason, mgmt_conn);
2910
2911         hci_disconn_cfm(conn, cp->reason);
2912
2913 done:
2914         /* If the disconnection failed for any reason, the upper layer
2915          * does not retry to disconnect in current implementation.
2916          * Hence, we need to do some basic cleanup here and re-enable
2917          * advertising if necessary.
2918          */
2919         hci_conn_del(conn);
2920 unlock:
2921         hci_dev_unlock(hdev);
2922 }
2923
2924 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
2925 {
2926         /* When using controller based address resolution, then the new
2927          * address types 0x02 and 0x03 are used. These types need to be
2928          * converted back into either public address or random address type
2929          */
2930         switch (type) {
2931         case ADDR_LE_DEV_PUBLIC_RESOLVED:
2932                 if (resolved)
2933                         *resolved = true;
2934                 return ADDR_LE_DEV_PUBLIC;
2935         case ADDR_LE_DEV_RANDOM_RESOLVED:
2936                 if (resolved)
2937                         *resolved = true;
2938                 return ADDR_LE_DEV_RANDOM;
2939         }
2940
2941         if (resolved)
2942                 *resolved = false;
2943         return type;
2944 }
2945
2946 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2947                               u8 peer_addr_type, u8 own_address_type,
2948                               u8 filter_policy)
2949 {
2950         struct hci_conn *conn;
2951
2952         conn = hci_conn_hash_lookup_le(hdev, peer_addr,
2953                                        peer_addr_type);
2954         if (!conn)
2955                 return;
2956
2957         own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
2958
2959         /* Store the initiator and responder address information which
2960          * is needed for SMP. These values will not change during the
2961          * lifetime of the connection.
2962          */
2963         conn->init_addr_type = own_address_type;
2964         if (own_address_type == ADDR_LE_DEV_RANDOM)
2965                 bacpy(&conn->init_addr, &hdev->random_addr);
2966         else
2967                 bacpy(&conn->init_addr, &hdev->bdaddr);
2968
2969         conn->resp_addr_type = peer_addr_type;
2970         bacpy(&conn->resp_addr, peer_addr);
2971 }
2972
2973 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2974 {
2975         struct hci_cp_le_create_conn *cp;
2976
2977         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2978
2979         /* All connection failure handling is taken care of by the
2980          * hci_conn_failed function which is triggered by the HCI
2981          * request completion callbacks used for connecting.
2982          */
2983         if (status)
2984                 return;
2985
2986         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
2987         if (!cp)
2988                 return;
2989
2990         hci_dev_lock(hdev);
2991
2992         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2993                           cp->own_address_type, cp->filter_policy);
2994
2995         hci_dev_unlock(hdev);
2996 }
2997
2998 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
2999 {
3000         struct hci_cp_le_ext_create_conn *cp;
3001
3002         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3003
3004         /* All connection failure handling is taken care of by the
3005          * hci_conn_failed function which is triggered by the HCI
3006          * request completion callbacks used for connecting.
3007          */
3008         if (status)
3009                 return;
3010
3011         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
3012         if (!cp)
3013                 return;
3014
3015         hci_dev_lock(hdev);
3016
3017         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
3018                           cp->own_addr_type, cp->filter_policy);
3019
3020         hci_dev_unlock(hdev);
3021 }
3022
3023 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
3024 {
3025         struct hci_cp_le_read_remote_features *cp;
3026         struct hci_conn *conn;
3027
3028         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3029
3030         if (!status)
3031                 return;
3032
3033         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
3034         if (!cp)
3035                 return;
3036
3037         hci_dev_lock(hdev);
3038
3039         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3040         if (conn) {
3041                 if (conn->state == BT_CONFIG) {
3042                         hci_connect_cfm(conn, status);
3043                         hci_conn_drop(conn);
3044                 }
3045         }
3046
3047         hci_dev_unlock(hdev);
3048 }
3049
3050 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
3051 {
3052         struct hci_cp_le_start_enc *cp;
3053         struct hci_conn *conn;
3054
3055         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3056
3057         if (!status)
3058                 return;
3059
3060         hci_dev_lock(hdev);
3061
3062         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
3063         if (!cp)
3064                 goto unlock;
3065
3066         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3067         if (!conn)
3068                 goto unlock;
3069
3070         if (conn->state != BT_CONNECTED)
3071                 goto unlock;
3072
3073         hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3074         hci_conn_drop(conn);
3075
3076 unlock:
3077         hci_dev_unlock(hdev);
3078 }
3079
3080 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
3081 {
3082         struct hci_cp_switch_role *cp;
3083         struct hci_conn *conn;
3084
3085         BT_DBG("%s status 0x%2.2x", hdev->name, status);
3086
3087         if (!status)
3088                 return;
3089
3090         cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3091         if (!cp)
3092                 return;
3093
3094         hci_dev_lock(hdev);
3095
3096         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3097         if (conn)
3098                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3099
3100         hci_dev_unlock(hdev);
3101 }
3102
3103 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3104                                      struct sk_buff *skb)
3105 {
3106         struct hci_ev_status *ev = data;
3107         struct discovery_state *discov = &hdev->discovery;
3108         struct inquiry_entry *e;
3109
3110         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3111
3112         hci_conn_check_pending(hdev);
3113
3114         if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3115                 return;
3116
3117         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3118         wake_up_bit(&hdev->flags, HCI_INQUIRY);
3119
3120         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3121                 return;
3122
3123         hci_dev_lock(hdev);
3124
3125         if (discov->state != DISCOVERY_FINDING)
3126                 goto unlock;
3127
3128         if (list_empty(&discov->resolve)) {
3129                 /* When BR/EDR inquiry is active and no LE scanning is in
3130                  * progress, then change discovery state to indicate completion.
3131                  *
3132                  * When running LE scanning and BR/EDR inquiry simultaneously
3133                  * and the LE scan already finished, then change the discovery
3134                  * state to indicate completion.
3135                  */
3136                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3137                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3138                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3139                 goto unlock;
3140         }
3141
3142         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3143         if (e && hci_resolve_name(hdev, e) == 0) {
3144                 e->name_state = NAME_PENDING;
3145                 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3146                 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3147         } else {
3148                 /* When BR/EDR inquiry is active and no LE scanning is in
3149                  * progress, then change discovery state to indicate completion.
3150                  *
3151                  * When running LE scanning and BR/EDR inquiry simultaneously
3152                  * and the LE scan already finished, then change the discovery
3153                  * state to indicate completion.
3154                  */
3155                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3156                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3157                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3158         }
3159
3160 unlock:
3161         hci_dev_unlock(hdev);
3162 }
3163
3164 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3165                                    struct sk_buff *skb)
3166 {
3167         struct hci_ev_inquiry_result *ev = edata;
3168         struct inquiry_data data;
3169         int i;
3170
3171         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3172                              flex_array_size(ev, info, ev->num)))
3173                 return;
3174
3175         bt_dev_dbg(hdev, "num %d", ev->num);
3176
3177         if (!ev->num)
3178                 return;
3179
3180         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3181                 return;
3182
3183         hci_dev_lock(hdev);
3184
3185         for (i = 0; i < ev->num; i++) {
3186                 struct inquiry_info *info = &ev->info[i];
3187                 u32 flags;
3188
3189                 bacpy(&data.bdaddr, &info->bdaddr);
3190                 data.pscan_rep_mode     = info->pscan_rep_mode;
3191                 data.pscan_period_mode  = info->pscan_period_mode;
3192                 data.pscan_mode         = info->pscan_mode;
3193                 memcpy(data.dev_class, info->dev_class, 3);
3194                 data.clock_offset       = info->clock_offset;
3195                 data.rssi               = HCI_RSSI_INVALID;
3196                 data.ssp_mode           = 0x00;
3197
3198                 flags = hci_inquiry_cache_update(hdev, &data, false);
3199
3200                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3201                                   info->dev_class, HCI_RSSI_INVALID,
3202                                   flags, NULL, 0, NULL, 0, 0);
3203         }
3204
3205         hci_dev_unlock(hdev);
3206 }
3207
3208 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3209                                   struct sk_buff *skb)
3210 {
3211         struct hci_ev_conn_complete *ev = data;
3212         struct hci_conn *conn;
3213         u8 status = ev->status;
3214
3215         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3216
3217         hci_dev_lock(hdev);
3218
3219         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3220         if (!conn) {
3221                 /* In case of error status and there is no connection pending
3222                  * just unlock as there is nothing to cleanup.
3223                  */
3224                 if (ev->status)
3225                         goto unlock;
3226
3227                 /* Connection may not exist if auto-connected. Check the bredr
3228                  * allowlist to see if this device is allowed to auto connect.
3229                  * If link is an ACL type, create a connection class
3230                  * automatically.
3231                  *
3232                  * Auto-connect will only occur if the event filter is
3233                  * programmed with a given address. Right now, event filter is
3234                  * only used during suspend.
3235                  */
3236                 if (ev->link_type == ACL_LINK &&
3237                     hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3238                                                       &ev->bdaddr,
3239                                                       BDADDR_BREDR)) {
3240                         conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3241                                             HCI_ROLE_SLAVE);
3242                         if (!conn) {
3243                                 bt_dev_err(hdev, "no memory for new conn");
3244                                 goto unlock;
3245                         }
3246                 } else {
3247                         if (ev->link_type != SCO_LINK)
3248                                 goto unlock;
3249
3250                         conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3251                                                        &ev->bdaddr);
3252                         if (!conn)
3253                                 goto unlock;
3254
3255                         conn->type = SCO_LINK;
3256                 }
3257         }
3258
3259         /* The HCI_Connection_Complete event is only sent once per connection.
3260          * Processing it more than once per connection can corrupt kernel memory.
3261          *
3262          * As the connection handle is set here for the first time, it indicates
3263          * whether the connection is already set up.
3264          */
3265         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
3266                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3267                 goto unlock;
3268         }
3269
3270         if (!status) {
3271                 conn->handle = __le16_to_cpu(ev->handle);
3272                 if (conn->handle > HCI_CONN_HANDLE_MAX) {
3273                         bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
3274                                    conn->handle, HCI_CONN_HANDLE_MAX);
3275                         status = HCI_ERROR_INVALID_PARAMETERS;
3276                         goto done;
3277                 }
3278
3279                 if (conn->type == ACL_LINK) {
3280                         conn->state = BT_CONFIG;
3281                         hci_conn_hold(conn);
3282
3283                         if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3284                             !hci_find_link_key(hdev, &ev->bdaddr))
3285                                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3286                         else
3287                                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3288                 } else
3289                         conn->state = BT_CONNECTED;
3290
3291                 hci_debugfs_create_conn(conn);
3292                 hci_conn_add_sysfs(conn);
3293
3294                 if (test_bit(HCI_AUTH, &hdev->flags))
3295                         set_bit(HCI_CONN_AUTH, &conn->flags);
3296
3297                 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3298                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3299
3300                 /* Get remote features */
3301                 if (conn->type == ACL_LINK) {
3302                         struct hci_cp_read_remote_features cp;
3303                         cp.handle = ev->handle;
3304                         hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3305                                      sizeof(cp), &cp);
3306
3307                         hci_update_scan(hdev);
3308                 }
3309
3310                 /* Set packet type for incoming connection */
3311                 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3312                         struct hci_cp_change_conn_ptype cp;
3313                         cp.handle = ev->handle;
3314                         cp.pkt_type = cpu_to_le16(conn->pkt_type);
3315                         hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3316                                      &cp);
3317                 }
3318         }
3319
3320         if (conn->type == ACL_LINK)
3321                 hci_sco_setup(conn, ev->status);
3322
3323 done:
3324         if (status) {
3325                 hci_conn_failed(conn, status);
3326         } else if (ev->link_type == SCO_LINK) {
3327                 switch (conn->setting & SCO_AIRMODE_MASK) {
3328                 case SCO_AIRMODE_CVSD:
3329                         if (hdev->notify)
3330                                 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3331                         break;
3332                 }
3333
3334                 hci_connect_cfm(conn, status);
3335         }
3336
3337 unlock:
3338         hci_dev_unlock(hdev);
3339
3340         hci_conn_check_pending(hdev);
3341 }
3342
3343 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3344 {
3345         struct hci_cp_reject_conn_req cp;
3346
3347         bacpy(&cp.bdaddr, bdaddr);
3348         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3349         hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3350 }
3351
3352 static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3353                                  struct sk_buff *skb)
3354 {
3355         struct hci_ev_conn_request *ev = data;
3356         int mask = hdev->link_mode;
3357         struct inquiry_entry *ie;
3358         struct hci_conn *conn;
3359         __u8 flags = 0;
3360
3361         bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3362
3363         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3364                                       &flags);
3365
3366         if (!(mask & HCI_LM_ACCEPT)) {
3367                 hci_reject_conn(hdev, &ev->bdaddr);
3368                 return;
3369         }
3370
3371         hci_dev_lock(hdev);
3372
3373         if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3374                                    BDADDR_BREDR)) {
3375                 hci_reject_conn(hdev, &ev->bdaddr);
3376                 goto unlock;
3377         }
3378
3379         /* Require HCI_CONNECTABLE or an accept list entry to accept the
3380          * connection. These features are only touched through mgmt so
3381          * only do the checks if HCI_MGMT is set.
3382          */
3383         if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3384             !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3385             !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3386                                                BDADDR_BREDR)) {
3387                 hci_reject_conn(hdev, &ev->bdaddr);
3388                 goto unlock;
3389         }
3390
3391         /* Connection accepted */
3392
3393         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3394         if (ie)
3395                 memcpy(ie->data.dev_class, ev->dev_class, 3);
3396
3397         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3398                         &ev->bdaddr);
3399         if (!conn) {
3400                 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3401                                     HCI_ROLE_SLAVE);
3402                 if (!conn) {
3403                         bt_dev_err(hdev, "no memory for new connection");
3404                         goto unlock;
3405                 }
3406         }
3407
3408         memcpy(conn->dev_class, ev->dev_class, 3);
3409
3410         hci_dev_unlock(hdev);
3411
3412         if (ev->link_type == ACL_LINK ||
3413             (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3414                 struct hci_cp_accept_conn_req cp;
3415                 conn->state = BT_CONNECT;
3416
3417                 bacpy(&cp.bdaddr, &ev->bdaddr);
3418
3419                 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3420                         cp.role = 0x00; /* Become central */
3421                 else
3422                         cp.role = 0x01; /* Remain peripheral */
3423
3424                 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3425         } else if (!(flags & HCI_PROTO_DEFER)) {
3426                 struct hci_cp_accept_sync_conn_req cp;
3427                 conn->state = BT_CONNECT;
3428
3429                 bacpy(&cp.bdaddr, &ev->bdaddr);
3430                 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3431
3432                 cp.tx_bandwidth   = cpu_to_le32(0x00001f40);
3433                 cp.rx_bandwidth   = cpu_to_le32(0x00001f40);
3434                 cp.max_latency    = cpu_to_le16(0xffff);
3435                 cp.content_format = cpu_to_le16(hdev->voice_setting);
3436                 cp.retrans_effort = 0xff;
3437
3438                 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3439                              &cp);
3440         } else {
3441                 conn->state = BT_CONNECT2;
3442                 hci_connect_cfm(conn, 0);
3443         }
3444
3445         return;
3446 unlock:
3447         hci_dev_unlock(hdev);
3448 }
3449
3450 static u8 hci_to_mgmt_reason(u8 err)
3451 {
3452         switch (err) {
3453         case HCI_ERROR_CONNECTION_TIMEOUT:
3454                 return MGMT_DEV_DISCONN_TIMEOUT;
3455         case HCI_ERROR_REMOTE_USER_TERM:
3456         case HCI_ERROR_REMOTE_LOW_RESOURCES:
3457         case HCI_ERROR_REMOTE_POWER_OFF:
3458                 return MGMT_DEV_DISCONN_REMOTE;
3459         case HCI_ERROR_LOCAL_HOST_TERM:
3460                 return MGMT_DEV_DISCONN_LOCAL_HOST;
3461         default:
3462                 return MGMT_DEV_DISCONN_UNKNOWN;
3463         }
3464 }
3465
3466 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3467                                      struct sk_buff *skb)
3468 {
3469         struct hci_ev_disconn_complete *ev = data;
3470         u8 reason;
3471         struct hci_conn_params *params;
3472         struct hci_conn *conn;
3473         bool mgmt_connected;
3474
3475         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3476
3477         hci_dev_lock(hdev);
3478
3479         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3480         if (!conn)
3481                 goto unlock;
3482
3483         if (ev->status) {
3484                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3485                                        conn->dst_type, ev->status);
3486                 goto unlock;
3487         }
3488
3489         conn->state = BT_CLOSED;
3490
3491         mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3492
3493         if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3494                 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3495         else
3496                 reason = hci_to_mgmt_reason(ev->reason);
3497
3498         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3499                                 reason, mgmt_connected);
3500
3501         if (conn->type == ACL_LINK) {
3502                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3503                         hci_remove_link_key(hdev, &conn->dst);
3504
3505                 hci_update_scan(hdev);
3506         }
3507
3508         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3509         if (params) {
3510                 switch (params->auto_connect) {
3511                 case HCI_AUTO_CONN_LINK_LOSS:
3512                         if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3513                                 break;
3514                         fallthrough;
3515
3516                 case HCI_AUTO_CONN_DIRECT:
3517                 case HCI_AUTO_CONN_ALWAYS:
3518                         list_del_init(&params->action);
3519                         list_add(&params->action, &hdev->pend_le_conns);
3520                         hci_update_passive_scan(hdev);
3521                         break;
3522
3523                 default:
3524                         break;
3525                 }
3526         }
3527
3528         hci_disconn_cfm(conn, ev->reason);
3529
3530         /* Re-enable advertising if necessary, since it might
3531          * have been disabled by the connection. From the
3532          * HCI_LE_Set_Advertise_Enable command description in
3533          * the core specification (v4.0):
3534          * "The Controller shall continue advertising until the Host
3535          * issues an LE_Set_Advertise_Enable command with
3536          * Advertising_Enable set to 0x00 (Advertising is disabled)
3537          * or until a connection is created or until the Advertising
3538          * is timed out due to Directed Advertising."
3539          */
3540         if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3541                 hdev->cur_adv_instance = conn->adv_instance;
3542                 hci_enable_advertising(hdev);
3543         }
3544
3545         hci_conn_del(conn);
3546
3547 unlock:
3548         hci_dev_unlock(hdev);
3549 }
3550
3551 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3552                                   struct sk_buff *skb)
3553 {
3554         struct hci_ev_auth_complete *ev = data;
3555         struct hci_conn *conn;
3556
3557         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3558
3559         hci_dev_lock(hdev);
3560
3561         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3562         if (!conn)
3563                 goto unlock;
3564
3565         if (!ev->status) {
3566                 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3567
3568                 if (!hci_conn_ssp_enabled(conn) &&
3569                     test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
3570                         bt_dev_info(hdev, "re-auth of legacy device is not possible.");
3571                 } else {
3572                         set_bit(HCI_CONN_AUTH, &conn->flags);
3573                         conn->sec_level = conn->pending_sec_level;
3574                 }
3575         } else {
3576                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3577                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3578
3579                 mgmt_auth_failed(conn, ev->status);
3580         }
3581
3582         clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3583         clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
3584
3585         if (conn->state == BT_CONFIG) {
3586                 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3587                         struct hci_cp_set_conn_encrypt cp;
3588                         cp.handle  = ev->handle;
3589                         cp.encrypt = 0x01;
3590                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3591                                      &cp);
3592                 } else {
3593                         conn->state = BT_CONNECTED;
3594                         hci_connect_cfm(conn, ev->status);
3595                         hci_conn_drop(conn);
3596                 }
3597         } else {
3598                 hci_auth_cfm(conn, ev->status);
3599
3600                 hci_conn_hold(conn);
3601                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3602                 hci_conn_drop(conn);
3603         }
3604
3605         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3606                 if (!ev->status) {
3607                         struct hci_cp_set_conn_encrypt cp;
3608                         cp.handle  = ev->handle;
3609                         cp.encrypt = 0x01;
3610                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3611                                      &cp);
3612                 } else {
3613                         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3614                         hci_encrypt_cfm(conn, ev->status);
3615                 }
3616         }
3617
3618 unlock:
3619         hci_dev_unlock(hdev);
3620 }
3621
3622 static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3623                                 struct sk_buff *skb)
3624 {
3625         struct hci_ev_remote_name *ev = data;
3626         struct hci_conn *conn;
3627
3628         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3629
3630         hci_conn_check_pending(hdev);
3631
3632         hci_dev_lock(hdev);
3633
3634         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3635
3636         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3637                 goto check_auth;
3638
3639         if (ev->status == 0)
3640                 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3641                                        strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3642         else
3643                 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3644
3645 check_auth:
3646         if (!conn)
3647                 goto unlock;
3648
3649         if (!hci_outgoing_auth_needed(hdev, conn))
3650                 goto unlock;
3651
3652         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3653                 struct hci_cp_auth_requested cp;
3654
3655                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3656
3657                 cp.handle = __cpu_to_le16(conn->handle);
3658                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3659         }
3660
3661 unlock:
3662         hci_dev_unlock(hdev);
3663 }
3664
3665 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3666                                    struct sk_buff *skb)
3667 {
3668         struct hci_ev_encrypt_change *ev = data;
3669         struct hci_conn *conn;
3670
3671         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3672
3673         hci_dev_lock(hdev);
3674
3675         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3676         if (!conn)
3677                 goto unlock;
3678
3679         if (!ev->status) {
3680                 if (ev->encrypt) {
3681                         /* Encryption implies authentication */
3682                         set_bit(HCI_CONN_AUTH, &conn->flags);
3683                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3684                         conn->sec_level = conn->pending_sec_level;
3685
3686                         /* P-256 authentication key implies FIPS */
3687                         if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3688                                 set_bit(HCI_CONN_FIPS, &conn->flags);
3689
3690                         if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3691                             conn->type == LE_LINK)
3692                                 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3693                 } else {
3694                         clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3695                         clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3696                 }
3697         }
3698
3699         /* We should disregard the current RPA and generate a new one
3700          * whenever the encryption procedure fails.
3701          */
3702         if (ev->status && conn->type == LE_LINK) {
3703                 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3704                 hci_adv_instances_set_rpa_expired(hdev, true);
3705         }
3706
3707         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3708
3709         /* Check link security requirements are met */
3710         if (!hci_conn_check_link_mode(conn))
3711                 ev->status = HCI_ERROR_AUTH_FAILURE;
3712
3713         if (ev->status && conn->state == BT_CONNECTED) {
3714                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3715                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3716
3717                 /* Notify upper layers so they can cleanup before
3718                  * disconnecting.
3719                  */
3720                 hci_encrypt_cfm(conn, ev->status);
3721                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3722                 hci_conn_drop(conn);
3723                 goto unlock;
3724         }
3725
3726         /* Try reading the encryption key size for encrypted ACL links */
3727         if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3728                 struct hci_cp_read_enc_key_size cp;
3729
3730                 /* Only send HCI_Read_Encryption_Key_Size if the
3731                  * controller really supports it. If it doesn't, assume
3732                  * the default size (16).
3733                  */
3734                 if (!(hdev->commands[20] & 0x10)) {
3735                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3736                         goto notify;
3737                 }
3738
3739                 cp.handle = cpu_to_le16(conn->handle);
3740                 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3741                                  sizeof(cp), &cp)) {
3742                         bt_dev_err(hdev, "sending read key size failed");
3743                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3744                         goto notify;
3745                 }
3746
3747                 goto unlock;
3748         }
3749
3750         /* Set the default Authenticated Payload Timeout after
3751          * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3752          * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3753          * sent when the link is active and Encryption is enabled, the conn
3754          * type can be either LE or ACL and controller must support LMP Ping.
3755          * Ensure for AES-CCM encryption as well.
3756          */
3757         if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3758             test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3759             ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3760              (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3761                 struct hci_cp_write_auth_payload_to cp;
3762
3763                 cp.handle = cpu_to_le16(conn->handle);
3764                 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3765                 hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3766                              sizeof(cp), &cp);
3767         }
3768
3769 notify:
3770         hci_encrypt_cfm(conn, ev->status);
3771
3772 unlock:
3773         hci_dev_unlock(hdev);
3774 }
3775
3776 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3777                                              struct sk_buff *skb)
3778 {
3779         struct hci_ev_change_link_key_complete *ev = data;
3780         struct hci_conn *conn;
3781
3782         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3783
3784         hci_dev_lock(hdev);
3785
3786         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3787         if (conn) {
3788                 if (!ev->status)
3789                         set_bit(HCI_CONN_SECURE, &conn->flags);
3790
3791                 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3792
3793                 hci_key_change_cfm(conn, ev->status);
3794         }
3795
3796         hci_dev_unlock(hdev);
3797 }
3798
3799 static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3800                                     struct sk_buff *skb)
3801 {
3802         struct hci_ev_remote_features *ev = data;
3803         struct hci_conn *conn;
3804
3805         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3806
3807         hci_dev_lock(hdev);
3808
3809         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3810         if (!conn)
3811                 goto unlock;
3812
3813         if (!ev->status)
3814                 memcpy(conn->features[0], ev->features, 8);
3815
3816         if (conn->state != BT_CONFIG)
3817                 goto unlock;
3818
3819         if (!ev->status && lmp_ext_feat_capable(hdev) &&
3820             lmp_ext_feat_capable(conn)) {
3821                 struct hci_cp_read_remote_ext_features cp;
3822                 cp.handle = ev->handle;
3823                 cp.page = 0x01;
3824                 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3825                              sizeof(cp), &cp);
3826                 goto unlock;
3827         }
3828
3829         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3830                 struct hci_cp_remote_name_req cp;
3831                 memset(&cp, 0, sizeof(cp));
3832                 bacpy(&cp.bdaddr, &conn->dst);
3833                 cp.pscan_rep_mode = 0x02;
3834                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3835         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3836                 mgmt_device_connected(hdev, conn, NULL, 0);
3837
3838         if (!hci_outgoing_auth_needed(hdev, conn)) {
3839                 conn->state = BT_CONNECTED;
3840                 hci_connect_cfm(conn, ev->status);
3841                 hci_conn_drop(conn);
3842         }
3843
3844 unlock:
3845         hci_dev_unlock(hdev);
3846 }
3847
3848 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3849 {
3850         cancel_delayed_work(&hdev->cmd_timer);
3851
3852         rcu_read_lock();
3853         if (!test_bit(HCI_RESET, &hdev->flags)) {
3854                 if (ncmd) {
3855                         cancel_delayed_work(&hdev->ncmd_timer);
3856                         atomic_set(&hdev->cmd_cnt, 1);
3857                 } else {
3858                         if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3859                                 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3860                                                    HCI_NCMD_TIMEOUT);
3861                 }
3862         }
3863         rcu_read_unlock();
3864 }
3865
3866 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3867                                         struct sk_buff *skb)
3868 {
3869         struct hci_rp_le_read_buffer_size_v2 *rp = data;
3870
3871         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3872
3873         if (rp->status)
3874                 return rp->status;
3875
3876         hdev->le_mtu   = __le16_to_cpu(rp->acl_mtu);
3877         hdev->le_pkts  = rp->acl_max_pkt;
3878         hdev->iso_mtu  = __le16_to_cpu(rp->iso_mtu);
3879         hdev->iso_pkts = rp->iso_max_pkt;
3880
3881         hdev->le_cnt  = hdev->le_pkts;
3882         hdev->iso_cnt = hdev->iso_pkts;
3883
3884         BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3885                hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3886
3887         return rp->status;
3888 }
3889
3890 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3891                                    struct sk_buff *skb)
3892 {
3893         struct hci_rp_le_set_cig_params *rp = data;
3894         struct hci_conn *conn;
3895         int i = 0;
3896
3897         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3898
3899         hci_dev_lock(hdev);
3900
3901         if (rp->status) {
3902                 while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) {
3903                         conn->state = BT_CLOSED;
3904                         hci_connect_cfm(conn, rp->status);
3905                         hci_conn_del(conn);
3906                 }
3907                 goto unlock;
3908         }
3909
3910         rcu_read_lock();
3911
3912         list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
3913                 if (conn->type != ISO_LINK || conn->iso_qos.cig != rp->cig_id ||
3914                     conn->state == BT_CONNECTED)
3915                         continue;
3916
3917                 conn->handle = __le16_to_cpu(rp->handle[i++]);
3918
3919                 bt_dev_dbg(hdev, "%p handle 0x%4.4x link %p", conn,
3920                            conn->handle, conn->link);
3921
3922                 /* Create CIS if LE is already connected */
3923                 if (conn->link && conn->link->state == BT_CONNECTED) {
3924                         rcu_read_unlock();
3925                         hci_le_create_cis(conn->link);
3926                         rcu_read_lock();
3927                 }
3928
3929                 if (i == rp->num_handles)
3930                         break;
3931         }
3932
3933         rcu_read_unlock();
3934
3935 unlock:
3936         hci_dev_unlock(hdev);
3937
3938         return rp->status;
3939 }
3940
3941 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3942                                    struct sk_buff *skb)
3943 {
3944         struct hci_rp_le_setup_iso_path *rp = data;
3945         struct hci_cp_le_setup_iso_path *cp;
3946         struct hci_conn *conn;
3947
3948         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3949
3950         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3951         if (!cp)
3952                 return rp->status;
3953
3954         hci_dev_lock(hdev);
3955
3956         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3957         if (!conn)
3958                 goto unlock;
3959
3960         if (rp->status) {
3961                 hci_connect_cfm(conn, rp->status);
3962                 hci_conn_del(conn);
3963                 goto unlock;
3964         }
3965
3966         switch (cp->direction) {
3967         /* Input (Host to Controller) */
3968         case 0x00:
3969                 /* Only confirm connection if output only */
3970                 if (conn->iso_qos.out.sdu && !conn->iso_qos.in.sdu)
3971                         hci_connect_cfm(conn, rp->status);
3972                 break;
3973         /* Output (Controller to Host) */
3974         case 0x01:
3975                 /* Confirm connection since conn->iso_qos is always configured
3976                  * last.
3977                  */
3978                 hci_connect_cfm(conn, rp->status);
3979                 break;
3980         }
3981
3982 unlock:
3983         hci_dev_unlock(hdev);
3984         return rp->status;
3985 }
3986
3987 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
3988 {
3989         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3990 }
3991
3992 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
3993                                    struct sk_buff *skb)
3994 {
3995         struct hci_ev_status *rp = data;
3996         struct hci_cp_le_set_per_adv_params *cp;
3997
3998         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3999
4000         if (rp->status)
4001                 return rp->status;
4002
4003         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
4004         if (!cp)
4005                 return rp->status;
4006
4007         /* TODO: set the conn state */
4008         return rp->status;
4009 }
4010
4011 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
4012                                        struct sk_buff *skb)
4013 {
4014         struct hci_ev_status *rp = data;
4015         __u8 *sent;
4016
4017         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4018
4019         if (rp->status)
4020                 return rp->status;
4021
4022         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
4023         if (!sent)
4024                 return rp->status;
4025
4026         hci_dev_lock(hdev);
4027
4028         if (*sent)
4029                 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
4030         else
4031                 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
4032
4033         hci_dev_unlock(hdev);
4034
4035         return rp->status;
4036 }
4037
4038 #define HCI_CC_VL(_op, _func, _min, _max) \
4039 { \
4040         .op = _op, \
4041         .func = _func, \
4042         .min_len = _min, \
4043         .max_len = _max, \
4044 }
4045
4046 #define HCI_CC(_op, _func, _len) \
4047         HCI_CC_VL(_op, _func, _len, _len)
4048
4049 #define HCI_CC_STATUS(_op, _func) \
4050         HCI_CC(_op, _func, sizeof(struct hci_ev_status))
4051
4052 static const struct hci_cc {
4053         u16  op;
4054         u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4055         u16  min_len;
4056         u16  max_len;
4057 } hci_cc_table[] = {
4058         HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4059         HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4060         HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4061         HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4062                       hci_cc_remote_name_req_cancel),
4063         HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4064                sizeof(struct hci_rp_role_discovery)),
4065         HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4066                sizeof(struct hci_rp_read_link_policy)),
4067         HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4068                sizeof(struct hci_rp_write_link_policy)),
4069         HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4070                sizeof(struct hci_rp_read_def_link_policy)),
4071         HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4072                       hci_cc_write_def_link_policy),
4073         HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4074         HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4075                sizeof(struct hci_rp_read_stored_link_key)),
4076         HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4077                sizeof(struct hci_rp_delete_stored_link_key)),
4078         HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4079         HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4080                sizeof(struct hci_rp_read_local_name)),
4081         HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4082         HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4083         HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4084         HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4085         HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4086                sizeof(struct hci_rp_read_class_of_dev)),
4087         HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4088         HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4089                sizeof(struct hci_rp_read_voice_setting)),
4090         HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4091         HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4092                sizeof(struct hci_rp_read_num_supported_iac)),
4093         HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4094         HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4095         HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4096                sizeof(struct hci_rp_read_auth_payload_to)),
4097         HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4098                sizeof(struct hci_rp_write_auth_payload_to)),
4099         HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4100                sizeof(struct hci_rp_read_local_version)),
4101         HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4102                sizeof(struct hci_rp_read_local_commands)),
4103         HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4104                sizeof(struct hci_rp_read_local_features)),
4105         HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4106                sizeof(struct hci_rp_read_local_ext_features)),
4107         HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4108                sizeof(struct hci_rp_read_buffer_size)),
4109         HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4110                sizeof(struct hci_rp_read_bd_addr)),
4111         HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4112                sizeof(struct hci_rp_read_local_pairing_opts)),
4113         HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4114                sizeof(struct hci_rp_read_page_scan_activity)),
4115         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4116                       hci_cc_write_page_scan_activity),
4117         HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4118                sizeof(struct hci_rp_read_page_scan_type)),
4119         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4120         HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4121                sizeof(struct hci_rp_read_data_block_size)),
4122         HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4123                sizeof(struct hci_rp_read_flow_control_mode)),
4124         HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4125                sizeof(struct hci_rp_read_local_amp_info)),
4126         HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4127                sizeof(struct hci_rp_read_clock)),
4128         HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4129                sizeof(struct hci_rp_read_enc_key_size)),
4130         HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4131                sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4132         HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4133                hci_cc_read_def_err_data_reporting,
4134                sizeof(struct hci_rp_read_def_err_data_reporting)),
4135         HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4136                       hci_cc_write_def_err_data_reporting),
4137         HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4138                sizeof(struct hci_rp_pin_code_reply)),
4139         HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4140                sizeof(struct hci_rp_pin_code_neg_reply)),
4141         HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4142                sizeof(struct hci_rp_read_local_oob_data)),
4143         HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4144                sizeof(struct hci_rp_read_local_oob_ext_data)),
4145         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4146                sizeof(struct hci_rp_le_read_buffer_size)),
4147         HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4148                sizeof(struct hci_rp_le_read_local_features)),
4149         HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4150                sizeof(struct hci_rp_le_read_adv_tx_power)),
4151         HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4152                sizeof(struct hci_rp_user_confirm_reply)),
4153         HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4154                sizeof(struct hci_rp_user_confirm_reply)),
4155         HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4156                sizeof(struct hci_rp_user_confirm_reply)),
4157         HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4158                sizeof(struct hci_rp_user_confirm_reply)),
4159         HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4160         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4161         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4162         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4163         HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4164                hci_cc_le_read_accept_list_size,
4165                sizeof(struct hci_rp_le_read_accept_list_size)),
4166         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4167         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4168                       hci_cc_le_add_to_accept_list),
4169         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4170                       hci_cc_le_del_from_accept_list),
4171         HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4172                sizeof(struct hci_rp_le_read_supported_states)),
4173         HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4174                sizeof(struct hci_rp_le_read_def_data_len)),
4175         HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4176                       hci_cc_le_write_def_data_len),
4177         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4178                       hci_cc_le_add_to_resolv_list),
4179         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4180                       hci_cc_le_del_from_resolv_list),
4181         HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4182                       hci_cc_le_clear_resolv_list),
4183         HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4184                sizeof(struct hci_rp_le_read_resolv_list_size)),
4185         HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4186                       hci_cc_le_set_addr_resolution_enable),
4187         HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4188                sizeof(struct hci_rp_le_read_max_data_len)),
4189         HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4190                       hci_cc_write_le_host_supported),
4191         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4192         HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4193                sizeof(struct hci_rp_read_rssi)),
4194         HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4195                sizeof(struct hci_rp_read_tx_power)),
4196         HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4197         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4198                       hci_cc_le_set_ext_scan_param),
4199         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4200                       hci_cc_le_set_ext_scan_enable),
4201         HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4202         HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4203                hci_cc_le_read_num_adv_sets,
4204                sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4205         HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4206                sizeof(struct hci_rp_le_set_ext_adv_params)),
4207         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4208                       hci_cc_le_set_ext_adv_enable),
4209         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4210                       hci_cc_le_set_adv_set_random_addr),
4211         HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4212         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4213         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4214         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4215                       hci_cc_le_set_per_adv_enable),
4216         HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4217                sizeof(struct hci_rp_le_read_transmit_power)),
4218 #ifdef TIZEN_BT
4219         HCI_CC(HCI_OP_ENABLE_RSSI, hci_cc_enable_rssi,
4220                sizeof(struct hci_cc_rsp_enable_rssi)),
4221         HCI_CC(HCI_OP_GET_RAW_RSSI, hci_cc_get_raw_rssi,
4222                sizeof(struct hci_cc_rp_get_raw_rssi)),
4223 #endif
4224         HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4225         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4226                sizeof(struct hci_rp_le_read_buffer_size_v2)),
4227         HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4228                   sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4229         HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4230                sizeof(struct hci_rp_le_setup_iso_path)),
4231 };
4232
4233 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4234                       struct sk_buff *skb)
4235 {
4236         void *data;
4237
4238         if (skb->len < cc->min_len) {
4239                 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4240                            cc->op, skb->len, cc->min_len);
4241                 return HCI_ERROR_UNSPECIFIED;
4242         }
4243
4244         /* Just warn if the length is over max_len size it still be possible to
4245          * partially parse the cc so leave to callback to decide if that is
4246          * acceptable.
4247          */
4248         if (skb->len > cc->max_len)
4249                 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4250                             cc->op, skb->len, cc->max_len);
4251
4252         data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4253         if (!data)
4254                 return HCI_ERROR_UNSPECIFIED;
4255
4256         return cc->func(hdev, data, skb);
4257 }
4258
4259 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4260                                  struct sk_buff *skb, u16 *opcode, u8 *status,
4261                                  hci_req_complete_t *req_complete,
4262                                  hci_req_complete_skb_t *req_complete_skb)
4263 {
4264         struct hci_ev_cmd_complete *ev = data;
4265         int i;
4266
4267         *opcode = __le16_to_cpu(ev->opcode);
4268
4269         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4270
4271         for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4272                 if (hci_cc_table[i].op == *opcode) {
4273                         *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4274                         break;
4275                 }
4276         }
4277
4278         if (i == ARRAY_SIZE(hci_cc_table)) {
4279                 /* Unknown opcode, assume byte 0 contains the status, so
4280                  * that e.g. __hci_cmd_sync() properly returns errors
4281                  * for vendor specific commands send by HCI drivers.
4282                  * If a vendor doesn't actually follow this convention we may
4283                  * need to introduce a vendor CC table in order to properly set
4284                  * the status.
4285                  */
4286                 *status = skb->data[0];
4287         }
4288
4289         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4290
4291         hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4292                              req_complete_skb);
4293
4294         if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4295                 bt_dev_err(hdev,
4296                            "unexpected event for opcode 0x%4.4x", *opcode);
4297                 return;
4298         }
4299
4300         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4301                 queue_work(hdev->workqueue, &hdev->cmd_work);
4302 }
4303
4304 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4305 {
4306         struct hci_cp_le_create_cis *cp;
4307         int i;
4308
4309         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4310
4311         if (!status)
4312                 return;
4313
4314         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4315         if (!cp)
4316                 return;
4317
4318         hci_dev_lock(hdev);
4319
4320         /* Remove connection if command failed */
4321         for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4322                 struct hci_conn *conn;
4323                 u16 handle;
4324
4325                 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4326
4327                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4328                 if (conn) {
4329                         conn->state = BT_CLOSED;
4330                         hci_connect_cfm(conn, status);
4331                         hci_conn_del(conn);
4332                 }
4333         }
4334
4335         hci_dev_unlock(hdev);
4336 }
4337
4338 #define HCI_CS(_op, _func) \
4339 { \
4340         .op = _op, \
4341         .func = _func, \
4342 }
4343
4344 static const struct hci_cs {
4345         u16  op;
4346         void (*func)(struct hci_dev *hdev, __u8 status);
4347 } hci_cs_table[] = {
4348         HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4349         HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4350         HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4351         HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4352         HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4353         HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4354         HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4355         HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4356         HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4357                hci_cs_read_remote_ext_features),
4358         HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4359         HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4360                hci_cs_enhanced_setup_sync_conn),
4361         HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4362         HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4363         HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4364         HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4365         HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4366         HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4367         HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4368         HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4369         HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4370 };
4371
4372 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4373                                struct sk_buff *skb, u16 *opcode, u8 *status,
4374                                hci_req_complete_t *req_complete,
4375                                hci_req_complete_skb_t *req_complete_skb)
4376 {
4377         struct hci_ev_cmd_status *ev = data;
4378         int i;
4379
4380         *opcode = __le16_to_cpu(ev->opcode);
4381         *status = ev->status;
4382
4383         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4384
4385         for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4386                 if (hci_cs_table[i].op == *opcode) {
4387                         hci_cs_table[i].func(hdev, ev->status);
4388                         break;
4389                 }
4390         }
4391
4392         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4393
4394         /* Indicate request completion if the command failed. Also, if
4395          * we're not waiting for a special event and we get a success
4396          * command status we should try to flag the request as completed
4397          * (since for this kind of commands there will not be a command
4398          * complete event).
4399          */
4400         if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4401                 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4402                                      req_complete_skb);
4403                 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4404                         bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4405                                    *opcode);
4406                         return;
4407                 }
4408         }
4409
4410         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4411                 queue_work(hdev->workqueue, &hdev->cmd_work);
4412 }
4413
4414 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4415                                    struct sk_buff *skb)
4416 {
4417         struct hci_ev_hardware_error *ev = data;
4418
4419         bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4420
4421 #ifdef TIZEN_BT
4422         hci_dev_lock(hdev);
4423         mgmt_hardware_error(hdev, ev->code);
4424         hci_dev_unlock(hdev);
4425 #endif
4426         hdev->hw_error_code = ev->code;
4427
4428         queue_work(hdev->req_workqueue, &hdev->error_reset);
4429 }
4430
4431 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4432                                 struct sk_buff *skb)
4433 {
4434         struct hci_ev_role_change *ev = data;
4435         struct hci_conn *conn;
4436
4437         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4438
4439         hci_dev_lock(hdev);
4440
4441         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4442         if (conn) {
4443                 if (!ev->status)
4444                         conn->role = ev->role;
4445
4446                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4447
4448                 hci_role_switch_cfm(conn, ev->status, ev->role);
4449         }
4450
4451         hci_dev_unlock(hdev);
4452 }
4453
4454 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4455                                   struct sk_buff *skb)
4456 {
4457         struct hci_ev_num_comp_pkts *ev = data;
4458         int i;
4459
4460         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4461                              flex_array_size(ev, handles, ev->num)))
4462                 return;
4463
4464         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4465                 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4466                 return;
4467         }
4468
4469         bt_dev_dbg(hdev, "num %d", ev->num);
4470
4471         for (i = 0; i < ev->num; i++) {
4472                 struct hci_comp_pkts_info *info = &ev->handles[i];
4473                 struct hci_conn *conn;
4474                 __u16  handle, count;
4475
4476                 handle = __le16_to_cpu(info->handle);
4477                 count  = __le16_to_cpu(info->count);
4478
4479                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4480                 if (!conn)
4481                         continue;
4482
4483                 conn->sent -= count;
4484
4485                 switch (conn->type) {
4486                 case ACL_LINK:
4487                         hdev->acl_cnt += count;
4488                         if (hdev->acl_cnt > hdev->acl_pkts)
4489                                 hdev->acl_cnt = hdev->acl_pkts;
4490                         break;
4491
4492                 case LE_LINK:
4493                         if (hdev->le_pkts) {
4494                                 hdev->le_cnt += count;
4495                                 if (hdev->le_cnt > hdev->le_pkts)
4496                                         hdev->le_cnt = hdev->le_pkts;
4497                         } else {
4498                                 hdev->acl_cnt += count;
4499                                 if (hdev->acl_cnt > hdev->acl_pkts)
4500                                         hdev->acl_cnt = hdev->acl_pkts;
4501                         }
4502                         break;
4503
4504                 case SCO_LINK:
4505                         hdev->sco_cnt += count;
4506                         if (hdev->sco_cnt > hdev->sco_pkts)
4507                                 hdev->sco_cnt = hdev->sco_pkts;
4508                         break;
4509
4510                 case ISO_LINK:
4511                         if (hdev->iso_pkts) {
4512                                 hdev->iso_cnt += count;
4513                                 if (hdev->iso_cnt > hdev->iso_pkts)
4514                                         hdev->iso_cnt = hdev->iso_pkts;
4515                         } else if (hdev->le_pkts) {
4516                                 hdev->le_cnt += count;
4517                                 if (hdev->le_cnt > hdev->le_pkts)
4518                                         hdev->le_cnt = hdev->le_pkts;
4519                         } else {
4520                                 hdev->acl_cnt += count;
4521                                 if (hdev->acl_cnt > hdev->acl_pkts)
4522                                         hdev->acl_cnt = hdev->acl_pkts;
4523                         }
4524                         break;
4525
4526                 default:
4527                         bt_dev_err(hdev, "unknown type %d conn %p",
4528                                    conn->type, conn);
4529                         break;
4530                 }
4531         }
4532
4533         queue_work(hdev->workqueue, &hdev->tx_work);
4534 }
4535
4536 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4537                                                  __u16 handle)
4538 {
4539         struct hci_chan *chan;
4540
4541         switch (hdev->dev_type) {
4542         case HCI_PRIMARY:
4543                 return hci_conn_hash_lookup_handle(hdev, handle);
4544         case HCI_AMP:
4545                 chan = hci_chan_lookup_handle(hdev, handle);
4546                 if (chan)
4547                         return chan->conn;
4548                 break;
4549         default:
4550                 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4551                 break;
4552         }
4553
4554         return NULL;
4555 }
4556
4557 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4558                                     struct sk_buff *skb)
4559 {
4560         struct hci_ev_num_comp_blocks *ev = data;
4561         int i;
4562
4563         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4564                              flex_array_size(ev, handles, ev->num_hndl)))
4565                 return;
4566
4567         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4568                 bt_dev_err(hdev, "wrong event for mode %d",
4569                            hdev->flow_ctl_mode);
4570                 return;
4571         }
4572
4573         bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4574                    ev->num_hndl);
4575
4576         for (i = 0; i < ev->num_hndl; i++) {
4577                 struct hci_comp_blocks_info *info = &ev->handles[i];
4578                 struct hci_conn *conn = NULL;
4579                 __u16  handle, block_count;
4580
4581                 handle = __le16_to_cpu(info->handle);
4582                 block_count = __le16_to_cpu(info->blocks);
4583
4584                 conn = __hci_conn_lookup_handle(hdev, handle);
4585                 if (!conn)
4586                         continue;
4587
4588                 conn->sent -= block_count;
4589
4590                 switch (conn->type) {
4591                 case ACL_LINK:
4592                 case AMP_LINK:
4593                         hdev->block_cnt += block_count;
4594                         if (hdev->block_cnt > hdev->num_blocks)
4595                                 hdev->block_cnt = hdev->num_blocks;
4596                         break;
4597
4598                 default:
4599                         bt_dev_err(hdev, "unknown type %d conn %p",
4600                                    conn->type, conn);
4601                         break;
4602                 }
4603         }
4604
4605         queue_work(hdev->workqueue, &hdev->tx_work);
4606 }
4607
4608 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4609                                 struct sk_buff *skb)
4610 {
4611         struct hci_ev_mode_change *ev = data;
4612         struct hci_conn *conn;
4613
4614         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4615
4616         hci_dev_lock(hdev);
4617
4618         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4619         if (conn) {
4620                 conn->mode = ev->mode;
4621
4622                 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4623                                         &conn->flags)) {
4624                         if (conn->mode == HCI_CM_ACTIVE)
4625                                 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4626                         else
4627                                 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4628                 }
4629
4630                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4631                         hci_sco_setup(conn, ev->status);
4632         }
4633
4634         hci_dev_unlock(hdev);
4635 }
4636
4637 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4638                                      struct sk_buff *skb)
4639 {
4640         struct hci_ev_pin_code_req *ev = data;
4641         struct hci_conn *conn;
4642
4643         bt_dev_dbg(hdev, "");
4644
4645         hci_dev_lock(hdev);
4646
4647         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4648         if (!conn)
4649                 goto unlock;
4650
4651         if (conn->state == BT_CONNECTED) {
4652                 hci_conn_hold(conn);
4653                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4654                 hci_conn_drop(conn);
4655         }
4656
4657         if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4658             !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4659                 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4660                              sizeof(ev->bdaddr), &ev->bdaddr);
4661         } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4662                 u8 secure;
4663
4664                 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4665                         secure = 1;
4666                 else
4667                         secure = 0;
4668
4669                 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4670         }
4671
4672 unlock:
4673         hci_dev_unlock(hdev);
4674 }
4675
4676 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4677 {
4678         if (key_type == HCI_LK_CHANGED_COMBINATION)
4679                 return;
4680
4681         conn->pin_length = pin_len;
4682         conn->key_type = key_type;
4683
4684         switch (key_type) {
4685         case HCI_LK_LOCAL_UNIT:
4686         case HCI_LK_REMOTE_UNIT:
4687         case HCI_LK_DEBUG_COMBINATION:
4688                 return;
4689         case HCI_LK_COMBINATION:
4690                 if (pin_len == 16)
4691                         conn->pending_sec_level = BT_SECURITY_HIGH;
4692                 else
4693                         conn->pending_sec_level = BT_SECURITY_MEDIUM;
4694                 break;
4695         case HCI_LK_UNAUTH_COMBINATION_P192:
4696         case HCI_LK_UNAUTH_COMBINATION_P256:
4697                 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4698                 break;
4699         case HCI_LK_AUTH_COMBINATION_P192:
4700                 conn->pending_sec_level = BT_SECURITY_HIGH;
4701                 break;
4702         case HCI_LK_AUTH_COMBINATION_P256:
4703                 conn->pending_sec_level = BT_SECURITY_FIPS;
4704                 break;
4705         }
4706 }
4707
4708 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4709                                      struct sk_buff *skb)
4710 {
4711         struct hci_ev_link_key_req *ev = data;
4712         struct hci_cp_link_key_reply cp;
4713         struct hci_conn *conn;
4714         struct link_key *key;
4715
4716         bt_dev_dbg(hdev, "");
4717
4718         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4719                 return;
4720
4721         hci_dev_lock(hdev);
4722
4723         key = hci_find_link_key(hdev, &ev->bdaddr);
4724         if (!key) {
4725                 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4726                 goto not_found;
4727         }
4728
4729         bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4730
4731         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4732         if (conn) {
4733                 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4734
4735                 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4736                      key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4737                     conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4738                         bt_dev_dbg(hdev, "ignoring unauthenticated key");
4739                         goto not_found;
4740                 }
4741
4742                 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4743                     (conn->pending_sec_level == BT_SECURITY_HIGH ||
4744                      conn->pending_sec_level == BT_SECURITY_FIPS)) {
4745                         bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4746                         goto not_found;
4747                 }
4748
4749                 conn_set_key(conn, key->type, key->pin_len);
4750         }
4751
4752         bacpy(&cp.bdaddr, &ev->bdaddr);
4753         memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4754
4755         hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4756
4757         hci_dev_unlock(hdev);
4758
4759         return;
4760
4761 not_found:
4762         hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4763         hci_dev_unlock(hdev);
4764 }
4765
4766 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4767                                     struct sk_buff *skb)
4768 {
4769         struct hci_ev_link_key_notify *ev = data;
4770         struct hci_conn *conn;
4771         struct link_key *key;
4772         bool persistent;
4773         u8 pin_len = 0;
4774
4775         bt_dev_dbg(hdev, "");
4776
4777         hci_dev_lock(hdev);
4778
4779         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4780         if (!conn)
4781                 goto unlock;
4782
4783         hci_conn_hold(conn);
4784         conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4785         hci_conn_drop(conn);
4786
4787         set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4788         conn_set_key(conn, ev->key_type, conn->pin_length);
4789
4790         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4791                 goto unlock;
4792
4793         key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4794                                 ev->key_type, pin_len, &persistent);
4795         if (!key)
4796                 goto unlock;
4797
4798         /* Update connection information since adding the key will have
4799          * fixed up the type in the case of changed combination keys.
4800          */
4801         if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4802                 conn_set_key(conn, key->type, key->pin_len);
4803
4804         mgmt_new_link_key(hdev, key, persistent);
4805
4806         /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4807          * is set. If it's not set simply remove the key from the kernel
4808          * list (we've still notified user space about it but with
4809          * store_hint being 0).
4810          */
4811         if (key->type == HCI_LK_DEBUG_COMBINATION &&
4812             !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4813                 list_del_rcu(&key->list);
4814                 kfree_rcu(key, rcu);
4815                 goto unlock;
4816         }
4817
4818         if (persistent)
4819                 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4820         else
4821                 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4822
4823 unlock:
4824         hci_dev_unlock(hdev);
4825 }
4826
4827 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4828                                  struct sk_buff *skb)
4829 {
4830         struct hci_ev_clock_offset *ev = data;
4831         struct hci_conn *conn;
4832
4833         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4834
4835         hci_dev_lock(hdev);
4836
4837         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4838         if (conn && !ev->status) {
4839                 struct inquiry_entry *ie;
4840
4841                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4842                 if (ie) {
4843                         ie->data.clock_offset = ev->clock_offset;
4844                         ie->timestamp = jiffies;
4845                 }
4846         }
4847
4848         hci_dev_unlock(hdev);
4849 }
4850
4851 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4852                                     struct sk_buff *skb)
4853 {
4854         struct hci_ev_pkt_type_change *ev = data;
4855         struct hci_conn *conn;
4856
4857         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4858
4859         hci_dev_lock(hdev);
4860
4861         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4862         if (conn && !ev->status)
4863                 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4864
4865         hci_dev_unlock(hdev);
4866 }
4867
4868 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4869                                    struct sk_buff *skb)
4870 {
4871         struct hci_ev_pscan_rep_mode *ev = data;
4872         struct inquiry_entry *ie;
4873
4874         bt_dev_dbg(hdev, "");
4875
4876         hci_dev_lock(hdev);
4877
4878         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4879         if (ie) {
4880                 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4881                 ie->timestamp = jiffies;
4882         }
4883
4884         hci_dev_unlock(hdev);
4885 }
4886
4887 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4888                                              struct sk_buff *skb)
4889 {
4890         struct hci_ev_inquiry_result_rssi *ev = edata;
4891         struct inquiry_data data;
4892         int i;
4893
4894         bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4895
4896         if (!ev->num)
4897                 return;
4898
4899         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4900                 return;
4901
4902         hci_dev_lock(hdev);
4903
4904         if (skb->len == array_size(ev->num,
4905                                    sizeof(struct inquiry_info_rssi_pscan))) {
4906                 struct inquiry_info_rssi_pscan *info;
4907
4908                 for (i = 0; i < ev->num; i++) {
4909                         u32 flags;
4910
4911                         info = hci_ev_skb_pull(hdev, skb,
4912                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4913                                                sizeof(*info));
4914                         if (!info) {
4915                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4916                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4917                                 goto unlock;
4918                         }
4919
4920                         bacpy(&data.bdaddr, &info->bdaddr);
4921                         data.pscan_rep_mode     = info->pscan_rep_mode;
4922                         data.pscan_period_mode  = info->pscan_period_mode;
4923                         data.pscan_mode         = info->pscan_mode;
4924                         memcpy(data.dev_class, info->dev_class, 3);
4925                         data.clock_offset       = info->clock_offset;
4926                         data.rssi               = info->rssi;
4927                         data.ssp_mode           = 0x00;
4928
4929                         flags = hci_inquiry_cache_update(hdev, &data, false);
4930
4931                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4932                                           info->dev_class, info->rssi,
4933                                           flags, NULL, 0, NULL, 0, 0);
4934                 }
4935         } else if (skb->len == array_size(ev->num,
4936                                           sizeof(struct inquiry_info_rssi))) {
4937                 struct inquiry_info_rssi *info;
4938
4939                 for (i = 0; i < ev->num; i++) {
4940                         u32 flags;
4941
4942                         info = hci_ev_skb_pull(hdev, skb,
4943                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4944                                                sizeof(*info));
4945                         if (!info) {
4946                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4947                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4948                                 goto unlock;
4949                         }
4950
4951                         bacpy(&data.bdaddr, &info->bdaddr);
4952                         data.pscan_rep_mode     = info->pscan_rep_mode;
4953                         data.pscan_period_mode  = info->pscan_period_mode;
4954                         data.pscan_mode         = 0x00;
4955                         memcpy(data.dev_class, info->dev_class, 3);
4956                         data.clock_offset       = info->clock_offset;
4957                         data.rssi               = info->rssi;
4958                         data.ssp_mode           = 0x00;
4959
4960                         flags = hci_inquiry_cache_update(hdev, &data, false);
4961
4962                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4963                                           info->dev_class, info->rssi,
4964                                           flags, NULL, 0, NULL, 0, 0);
4965                 }
4966         } else {
4967                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4968                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4969         }
4970 unlock:
4971         hci_dev_unlock(hdev);
4972 }
4973
4974 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
4975                                         struct sk_buff *skb)
4976 {
4977         struct hci_ev_remote_ext_features *ev = data;
4978         struct hci_conn *conn;
4979
4980         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4981
4982         hci_dev_lock(hdev);
4983
4984         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4985         if (!conn)
4986                 goto unlock;
4987
4988         if (ev->page < HCI_MAX_PAGES)
4989                 memcpy(conn->features[ev->page], ev->features, 8);
4990
4991         if (!ev->status && ev->page == 0x01) {
4992                 struct inquiry_entry *ie;
4993
4994                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4995                 if (ie)
4996                         ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4997
4998                 if (ev->features[0] & LMP_HOST_SSP) {
4999                         set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5000                 } else {
5001                         /* It is mandatory by the Bluetooth specification that
5002                          * Extended Inquiry Results are only used when Secure
5003                          * Simple Pairing is enabled, but some devices violate
5004                          * this.
5005                          *
5006                          * To make these devices work, the internal SSP
5007                          * enabled flag needs to be cleared if the remote host
5008                          * features do not indicate SSP support */
5009                         clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5010                 }
5011
5012                 if (ev->features[0] & LMP_HOST_SC)
5013                         set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
5014         }
5015
5016         if (conn->state != BT_CONFIG)
5017                 goto unlock;
5018
5019         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
5020                 struct hci_cp_remote_name_req cp;
5021                 memset(&cp, 0, sizeof(cp));
5022                 bacpy(&cp.bdaddr, &conn->dst);
5023                 cp.pscan_rep_mode = 0x02;
5024                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
5025         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5026                 mgmt_device_connected(hdev, conn, NULL, 0);
5027
5028         if (!hci_outgoing_auth_needed(hdev, conn)) {
5029                 conn->state = BT_CONNECTED;
5030                 hci_connect_cfm(conn, ev->status);
5031                 hci_conn_drop(conn);
5032         }
5033
5034 unlock:
5035         hci_dev_unlock(hdev);
5036 }
5037
5038 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
5039                                        struct sk_buff *skb)
5040 {
5041         struct hci_ev_sync_conn_complete *ev = data;
5042         struct hci_conn *conn;
5043         u8 status = ev->status;
5044
5045         switch (ev->link_type) {
5046         case SCO_LINK:
5047         case ESCO_LINK:
5048                 break;
5049         default:
5050                 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
5051                  * for HCI_Synchronous_Connection_Complete is limited to
5052                  * either SCO or eSCO
5053                  */
5054                 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
5055                 return;
5056         }
5057
5058         bt_dev_dbg(hdev, "status 0x%2.2x", status);
5059
5060         hci_dev_lock(hdev);
5061
5062         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
5063         if (!conn) {
5064                 if (ev->link_type == ESCO_LINK)
5065                         goto unlock;
5066
5067                 /* When the link type in the event indicates SCO connection
5068                  * and lookup of the connection object fails, then check
5069                  * if an eSCO connection object exists.
5070                  *
5071                  * The core limits the synchronous connections to either
5072                  * SCO or eSCO. The eSCO connection is preferred and tried
5073                  * to be setup first and until successfully established,
5074                  * the link type will be hinted as eSCO.
5075                  */
5076                 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
5077                 if (!conn)
5078                         goto unlock;
5079         }
5080
5081         /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
5082          * Processing it more than once per connection can corrupt kernel memory.
5083          *
5084          * As the connection handle is set here for the first time, it indicates
5085          * whether the connection is already set up.
5086          */
5087         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
5088                 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5089                 goto unlock;
5090         }
5091
5092         switch (status) {
5093         case 0x00:
5094                 conn->handle = __le16_to_cpu(ev->handle);
5095                 if (conn->handle > HCI_CONN_HANDLE_MAX) {
5096                         bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
5097                                    conn->handle, HCI_CONN_HANDLE_MAX);
5098                         status = HCI_ERROR_INVALID_PARAMETERS;
5099                         conn->state = BT_CLOSED;
5100                         break;
5101                 }
5102
5103                 conn->state  = BT_CONNECTED;
5104                 conn->type   = ev->link_type;
5105
5106                 hci_debugfs_create_conn(conn);
5107                 hci_conn_add_sysfs(conn);
5108                 break;
5109
5110         case 0x10:      /* Connection Accept Timeout */
5111         case 0x0d:      /* Connection Rejected due to Limited Resources */
5112         case 0x11:      /* Unsupported Feature or Parameter Value */
5113         case 0x1c:      /* SCO interval rejected */
5114         case 0x1a:      /* Unsupported Remote Feature */
5115         case 0x1e:      /* Invalid LMP Parameters */
5116         case 0x1f:      /* Unspecified error */
5117         case 0x20:      /* Unsupported LMP Parameter value */
5118                 if (conn->out) {
5119                         conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5120                                         (hdev->esco_type & EDR_ESCO_MASK);
5121                         if (hci_setup_sync(conn, conn->link->handle))
5122                                 goto unlock;
5123                 }
5124                 fallthrough;
5125
5126         default:
5127                 conn->state = BT_CLOSED;
5128                 break;
5129         }
5130
5131         bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5132         /* Notify only in case of SCO over HCI transport data path which
5133          * is zero and non-zero value shall be non-HCI transport data path
5134          */
5135         if (conn->codec.data_path == 0 && hdev->notify) {
5136                 switch (ev->air_mode) {
5137                 case 0x02:
5138                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5139                         break;
5140                 case 0x03:
5141                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5142                         break;
5143                 }
5144         }
5145
5146         hci_connect_cfm(conn, status);
5147         if (status)
5148                 hci_conn_del(conn);
5149
5150 unlock:
5151         hci_dev_unlock(hdev);
5152 }
5153
5154 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5155 {
5156         size_t parsed = 0;
5157
5158         while (parsed < eir_len) {
5159                 u8 field_len = eir[0];
5160
5161                 if (field_len == 0)
5162                         return parsed;
5163
5164                 parsed += field_len + 1;
5165                 eir += field_len + 1;
5166         }
5167
5168         return eir_len;
5169 }
5170
5171 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5172                                             struct sk_buff *skb)
5173 {
5174         struct hci_ev_ext_inquiry_result *ev = edata;
5175         struct inquiry_data data;
5176         size_t eir_len;
5177         int i;
5178
5179         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5180                              flex_array_size(ev, info, ev->num)))
5181                 return;
5182
5183         bt_dev_dbg(hdev, "num %d", ev->num);
5184
5185         if (!ev->num)
5186                 return;
5187
5188         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5189                 return;
5190
5191         hci_dev_lock(hdev);
5192
5193         for (i = 0; i < ev->num; i++) {
5194                 struct extended_inquiry_info *info = &ev->info[i];
5195                 u32 flags;
5196                 bool name_known;
5197
5198                 bacpy(&data.bdaddr, &info->bdaddr);
5199                 data.pscan_rep_mode     = info->pscan_rep_mode;
5200                 data.pscan_period_mode  = info->pscan_period_mode;
5201                 data.pscan_mode         = 0x00;
5202                 memcpy(data.dev_class, info->dev_class, 3);
5203                 data.clock_offset       = info->clock_offset;
5204                 data.rssi               = info->rssi;
5205                 data.ssp_mode           = 0x01;
5206
5207                 if (hci_dev_test_flag(hdev, HCI_MGMT))
5208                         name_known = eir_get_data(info->data,
5209                                                   sizeof(info->data),
5210                                                   EIR_NAME_COMPLETE, NULL);
5211                 else
5212                         name_known = true;
5213
5214                 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5215
5216                 eir_len = eir_get_length(info->data, sizeof(info->data));
5217
5218                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5219                                   info->dev_class, info->rssi,
5220                                   flags, info->data, eir_len, NULL, 0, 0);
5221         }
5222
5223         hci_dev_unlock(hdev);
5224 }
5225
5226 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5227                                          struct sk_buff *skb)
5228 {
5229         struct hci_ev_key_refresh_complete *ev = data;
5230         struct hci_conn *conn;
5231
5232         bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5233                    __le16_to_cpu(ev->handle));
5234
5235         hci_dev_lock(hdev);
5236
5237         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5238         if (!conn)
5239                 goto unlock;
5240
5241         /* For BR/EDR the necessary steps are taken through the
5242          * auth_complete event.
5243          */
5244         if (conn->type != LE_LINK)
5245                 goto unlock;
5246
5247         if (!ev->status)
5248                 conn->sec_level = conn->pending_sec_level;
5249
5250         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5251
5252         if (ev->status && conn->state == BT_CONNECTED) {
5253                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5254                 hci_conn_drop(conn);
5255                 goto unlock;
5256         }
5257
5258         if (conn->state == BT_CONFIG) {
5259                 if (!ev->status)
5260                         conn->state = BT_CONNECTED;
5261
5262                 hci_connect_cfm(conn, ev->status);
5263                 hci_conn_drop(conn);
5264         } else {
5265                 hci_auth_cfm(conn, ev->status);
5266
5267                 hci_conn_hold(conn);
5268                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5269                 hci_conn_drop(conn);
5270         }
5271
5272 unlock:
5273         hci_dev_unlock(hdev);
5274 }
5275
5276 static u8 hci_get_auth_req(struct hci_conn *conn)
5277 {
5278         /* If remote requests no-bonding follow that lead */
5279         if (conn->remote_auth == HCI_AT_NO_BONDING ||
5280             conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5281                 return conn->remote_auth | (conn->auth_type & 0x01);
5282
5283         /* If both remote and local have enough IO capabilities, require
5284          * MITM protection
5285          */
5286         if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5287             conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5288                 return conn->remote_auth | 0x01;
5289
5290         /* No MITM protection possible so ignore remote requirement */
5291         return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5292 }
5293
5294 static u8 bredr_oob_data_present(struct hci_conn *conn)
5295 {
5296         struct hci_dev *hdev = conn->hdev;
5297         struct oob_data *data;
5298
5299         data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5300         if (!data)
5301                 return 0x00;
5302
5303         if (bredr_sc_enabled(hdev)) {
5304                 /* When Secure Connections is enabled, then just
5305                  * return the present value stored with the OOB
5306                  * data. The stored value contains the right present
5307                  * information. However it can only be trusted when
5308                  * not in Secure Connection Only mode.
5309                  */
5310                 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5311                         return data->present;
5312
5313                 /* When Secure Connections Only mode is enabled, then
5314                  * the P-256 values are required. If they are not
5315                  * available, then do not declare that OOB data is
5316                  * present.
5317                  */
5318                 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
5319                     !memcmp(data->hash256, ZERO_KEY, 16))
5320                         return 0x00;
5321
5322                 return 0x02;
5323         }
5324
5325         /* When Secure Connections is not enabled or actually
5326          * not supported by the hardware, then check that if
5327          * P-192 data values are present.
5328          */
5329         if (!memcmp(data->rand192, ZERO_KEY, 16) ||
5330             !memcmp(data->hash192, ZERO_KEY, 16))
5331                 return 0x00;
5332
5333         return 0x01;
5334 }
5335
5336 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5337                                     struct sk_buff *skb)
5338 {
5339         struct hci_ev_io_capa_request *ev = data;
5340         struct hci_conn *conn;
5341
5342         bt_dev_dbg(hdev, "");
5343
5344         hci_dev_lock(hdev);
5345
5346         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5347         if (!conn)
5348                 goto unlock;
5349
5350         hci_conn_hold(conn);
5351
5352         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5353                 goto unlock;
5354
5355         /* Allow pairing if we're pairable, the initiators of the
5356          * pairing or if the remote is not requesting bonding.
5357          */
5358         if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5359             test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5360             (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5361                 struct hci_cp_io_capability_reply cp;
5362
5363                 bacpy(&cp.bdaddr, &ev->bdaddr);
5364                 /* Change the IO capability from KeyboardDisplay
5365                  * to DisplayYesNo as it is not supported by BT spec. */
5366                 cp.capability = (conn->io_capability == 0x04) ?
5367                                 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5368
5369                 /* If we are initiators, there is no remote information yet */
5370                 if (conn->remote_auth == 0xff) {
5371                         /* Request MITM protection if our IO caps allow it
5372                          * except for the no-bonding case.
5373                          */
5374                         if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5375                             conn->auth_type != HCI_AT_NO_BONDING)
5376                                 conn->auth_type |= 0x01;
5377                 } else {
5378                         conn->auth_type = hci_get_auth_req(conn);
5379                 }
5380
5381                 /* If we're not bondable, force one of the non-bondable
5382                  * authentication requirement values.
5383                  */
5384                 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5385                         conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5386
5387                 cp.authentication = conn->auth_type;
5388                 cp.oob_data = bredr_oob_data_present(conn);
5389
5390                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5391                              sizeof(cp), &cp);
5392         } else {
5393                 struct hci_cp_io_capability_neg_reply cp;
5394
5395                 bacpy(&cp.bdaddr, &ev->bdaddr);
5396                 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5397
5398                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5399                              sizeof(cp), &cp);
5400         }
5401
5402 unlock:
5403         hci_dev_unlock(hdev);
5404 }
5405
5406 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5407                                   struct sk_buff *skb)
5408 {
5409         struct hci_ev_io_capa_reply *ev = data;
5410         struct hci_conn *conn;
5411
5412         bt_dev_dbg(hdev, "");
5413
5414         hci_dev_lock(hdev);
5415
5416         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5417         if (!conn)
5418                 goto unlock;
5419
5420         conn->remote_cap = ev->capability;
5421         conn->remote_auth = ev->authentication;
5422
5423 unlock:
5424         hci_dev_unlock(hdev);
5425 }
5426
5427 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5428                                          struct sk_buff *skb)
5429 {
5430         struct hci_ev_user_confirm_req *ev = data;
5431         int loc_mitm, rem_mitm, confirm_hint = 0;
5432         struct hci_conn *conn;
5433
5434         bt_dev_dbg(hdev, "");
5435
5436         hci_dev_lock(hdev);
5437
5438         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5439                 goto unlock;
5440
5441         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5442         if (!conn)
5443                 goto unlock;
5444
5445         loc_mitm = (conn->auth_type & 0x01);
5446         rem_mitm = (conn->remote_auth & 0x01);
5447
5448         /* If we require MITM but the remote device can't provide that
5449          * (it has NoInputNoOutput) then reject the confirmation
5450          * request. We check the security level here since it doesn't
5451          * necessarily match conn->auth_type.
5452          */
5453         if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5454             conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5455                 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5456                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5457                              sizeof(ev->bdaddr), &ev->bdaddr);
5458                 goto unlock;
5459         }
5460
5461         /* If no side requires MITM protection; auto-accept */
5462         if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5463             (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5464
5465                 /* If we're not the initiators request authorization to
5466                  * proceed from user space (mgmt_user_confirm with
5467                  * confirm_hint set to 1). The exception is if neither
5468                  * side had MITM or if the local IO capability is
5469                  * NoInputNoOutput, in which case we do auto-accept
5470                  */
5471                 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5472                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5473                     (loc_mitm || rem_mitm)) {
5474                         bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5475                         confirm_hint = 1;
5476                         goto confirm;
5477                 }
5478
5479                 /* If there already exists link key in local host, leave the
5480                  * decision to user space since the remote device could be
5481                  * legitimate or malicious.
5482                  */
5483                 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5484                         bt_dev_dbg(hdev, "Local host already has link key");
5485                         confirm_hint = 1;
5486                         goto confirm;
5487                 }
5488
5489                 BT_DBG("Auto-accept of user confirmation with %ums delay",
5490                        hdev->auto_accept_delay);
5491
5492                 if (hdev->auto_accept_delay > 0) {
5493                         int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5494                         queue_delayed_work(conn->hdev->workqueue,
5495                                            &conn->auto_accept_work, delay);
5496                         goto unlock;
5497                 }
5498
5499                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5500                              sizeof(ev->bdaddr), &ev->bdaddr);
5501                 goto unlock;
5502         }
5503
5504 confirm:
5505         mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5506                                   le32_to_cpu(ev->passkey), confirm_hint);
5507
5508 unlock:
5509         hci_dev_unlock(hdev);
5510 }
5511
5512 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5513                                          struct sk_buff *skb)
5514 {
5515         struct hci_ev_user_passkey_req *ev = data;
5516
5517         bt_dev_dbg(hdev, "");
5518
5519         if (hci_dev_test_flag(hdev, HCI_MGMT))
5520                 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5521 }
5522
5523 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5524                                         struct sk_buff *skb)
5525 {
5526         struct hci_ev_user_passkey_notify *ev = data;
5527         struct hci_conn *conn;
5528
5529         bt_dev_dbg(hdev, "");
5530
5531         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5532         if (!conn)
5533                 return;
5534
5535         conn->passkey_notify = __le32_to_cpu(ev->passkey);
5536         conn->passkey_entered = 0;
5537
5538         if (hci_dev_test_flag(hdev, HCI_MGMT))
5539                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5540                                          conn->dst_type, conn->passkey_notify,
5541                                          conn->passkey_entered);
5542 }
5543
5544 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5545                                     struct sk_buff *skb)
5546 {
5547         struct hci_ev_keypress_notify *ev = data;
5548         struct hci_conn *conn;
5549
5550         bt_dev_dbg(hdev, "");
5551
5552         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5553         if (!conn)
5554                 return;
5555
5556         switch (ev->type) {
5557         case HCI_KEYPRESS_STARTED:
5558                 conn->passkey_entered = 0;
5559                 return;
5560
5561         case HCI_KEYPRESS_ENTERED:
5562                 conn->passkey_entered++;
5563                 break;
5564
5565         case HCI_KEYPRESS_ERASED:
5566                 conn->passkey_entered--;
5567                 break;
5568
5569         case HCI_KEYPRESS_CLEARED:
5570                 conn->passkey_entered = 0;
5571                 break;
5572
5573         case HCI_KEYPRESS_COMPLETED:
5574                 return;
5575         }
5576
5577         if (hci_dev_test_flag(hdev, HCI_MGMT))
5578                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5579                                          conn->dst_type, conn->passkey_notify,
5580                                          conn->passkey_entered);
5581 }
5582
5583 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5584                                          struct sk_buff *skb)
5585 {
5586         struct hci_ev_simple_pair_complete *ev = data;
5587         struct hci_conn *conn;
5588
5589         bt_dev_dbg(hdev, "");
5590
5591         hci_dev_lock(hdev);
5592
5593         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5594         if (!conn)
5595                 goto unlock;
5596
5597         /* Reset the authentication requirement to unknown */
5598         conn->remote_auth = 0xff;
5599
5600         /* To avoid duplicate auth_failed events to user space we check
5601          * the HCI_CONN_AUTH_PEND flag which will be set if we
5602          * initiated the authentication. A traditional auth_complete
5603          * event gets always produced as initiator and is also mapped to
5604          * the mgmt_auth_failed event */
5605         if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5606                 mgmt_auth_failed(conn, ev->status);
5607
5608         hci_conn_drop(conn);
5609
5610 unlock:
5611         hci_dev_unlock(hdev);
5612 }
5613
5614 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5615                                          struct sk_buff *skb)
5616 {
5617         struct hci_ev_remote_host_features *ev = data;
5618         struct inquiry_entry *ie;
5619         struct hci_conn *conn;
5620
5621         bt_dev_dbg(hdev, "");
5622
5623         hci_dev_lock(hdev);
5624
5625         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5626         if (conn)
5627                 memcpy(conn->features[1], ev->features, 8);
5628
5629         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5630         if (ie)
5631                 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5632
5633         hci_dev_unlock(hdev);
5634 }
5635
5636 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5637                                             struct sk_buff *skb)
5638 {
5639         struct hci_ev_remote_oob_data_request *ev = edata;
5640         struct oob_data *data;
5641
5642         bt_dev_dbg(hdev, "");
5643
5644         hci_dev_lock(hdev);
5645
5646         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5647                 goto unlock;
5648
5649         data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5650         if (!data) {
5651                 struct hci_cp_remote_oob_data_neg_reply cp;
5652
5653                 bacpy(&cp.bdaddr, &ev->bdaddr);
5654                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5655                              sizeof(cp), &cp);
5656                 goto unlock;
5657         }
5658
5659         if (bredr_sc_enabled(hdev)) {
5660                 struct hci_cp_remote_oob_ext_data_reply cp;
5661
5662                 bacpy(&cp.bdaddr, &ev->bdaddr);
5663                 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5664                         memset(cp.hash192, 0, sizeof(cp.hash192));
5665                         memset(cp.rand192, 0, sizeof(cp.rand192));
5666                 } else {
5667                         memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5668                         memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5669                 }
5670                 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5671                 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5672
5673                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5674                              sizeof(cp), &cp);
5675         } else {
5676                 struct hci_cp_remote_oob_data_reply cp;
5677
5678                 bacpy(&cp.bdaddr, &ev->bdaddr);
5679                 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5680                 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5681
5682                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5683                              sizeof(cp), &cp);
5684         }
5685
5686 unlock:
5687         hci_dev_unlock(hdev);
5688 }
5689
5690 #if IS_ENABLED(CONFIG_BT_HS)
5691 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5692                                   struct sk_buff *skb)
5693 {
5694         struct hci_ev_channel_selected *ev = data;
5695         struct hci_conn *hcon;
5696
5697         bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5698
5699         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5700         if (!hcon)
5701                 return;
5702
5703         amp_read_loc_assoc_final_data(hdev, hcon);
5704 }
5705
5706 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5707                                       struct sk_buff *skb)
5708 {
5709         struct hci_ev_phy_link_complete *ev = data;
5710         struct hci_conn *hcon, *bredr_hcon;
5711
5712         bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5713                    ev->status);
5714
5715         hci_dev_lock(hdev);
5716
5717         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5718         if (!hcon)
5719                 goto unlock;
5720
5721         if (!hcon->amp_mgr)
5722                 goto unlock;
5723
5724         if (ev->status) {
5725                 hci_conn_del(hcon);
5726                 goto unlock;
5727         }
5728
5729         bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5730
5731         hcon->state = BT_CONNECTED;
5732         bacpy(&hcon->dst, &bredr_hcon->dst);
5733
5734         hci_conn_hold(hcon);
5735         hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5736         hci_conn_drop(hcon);
5737
5738         hci_debugfs_create_conn(hcon);
5739         hci_conn_add_sysfs(hcon);
5740
5741         amp_physical_cfm(bredr_hcon, hcon);
5742
5743 unlock:
5744         hci_dev_unlock(hdev);
5745 }
5746
5747 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5748                                      struct sk_buff *skb)
5749 {
5750         struct hci_ev_logical_link_complete *ev = data;
5751         struct hci_conn *hcon;
5752         struct hci_chan *hchan;
5753         struct amp_mgr *mgr;
5754
5755         bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5756                    le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5757
5758         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5759         if (!hcon)
5760                 return;
5761
5762         /* Create AMP hchan */
5763         hchan = hci_chan_create(hcon);
5764         if (!hchan)
5765                 return;
5766
5767         hchan->handle = le16_to_cpu(ev->handle);
5768         hchan->amp = true;
5769
5770         BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5771
5772         mgr = hcon->amp_mgr;
5773         if (mgr && mgr->bredr_chan) {
5774                 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5775
5776                 l2cap_chan_lock(bredr_chan);
5777
5778                 bredr_chan->conn->mtu = hdev->block_mtu;
5779                 l2cap_logical_cfm(bredr_chan, hchan, 0);
5780                 hci_conn_hold(hcon);
5781
5782                 l2cap_chan_unlock(bredr_chan);
5783         }
5784 }
5785
5786 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5787                                              struct sk_buff *skb)
5788 {
5789         struct hci_ev_disconn_logical_link_complete *ev = data;
5790         struct hci_chan *hchan;
5791
5792         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5793                    le16_to_cpu(ev->handle), ev->status);
5794
5795         if (ev->status)
5796                 return;
5797
5798         hci_dev_lock(hdev);
5799
5800         hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5801         if (!hchan || !hchan->amp)
5802                 goto unlock;
5803
5804         amp_destroy_logical_link(hchan, ev->reason);
5805
5806 unlock:
5807         hci_dev_unlock(hdev);
5808 }
5809
5810 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5811                                              struct sk_buff *skb)
5812 {
5813         struct hci_ev_disconn_phy_link_complete *ev = data;
5814         struct hci_conn *hcon;
5815
5816         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5817
5818         if (ev->status)
5819                 return;
5820
5821         hci_dev_lock(hdev);
5822
5823         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5824         if (hcon && hcon->type == AMP_LINK) {
5825                 hcon->state = BT_CLOSED;
5826                 hci_disconn_cfm(hcon, ev->reason);
5827                 hci_conn_del(hcon);
5828         }
5829
5830         hci_dev_unlock(hdev);
5831 }
5832 #endif
5833
5834 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5835                                 u8 bdaddr_type, bdaddr_t *local_rpa)
5836 {
5837         if (conn->out) {
5838                 conn->dst_type = bdaddr_type;
5839                 conn->resp_addr_type = bdaddr_type;
5840                 bacpy(&conn->resp_addr, bdaddr);
5841
5842                 /* Check if the controller has set a Local RPA then it must be
5843                  * used instead or hdev->rpa.
5844                  */
5845                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5846                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5847                         bacpy(&conn->init_addr, local_rpa);
5848                 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5849                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5850                         bacpy(&conn->init_addr, &conn->hdev->rpa);
5851                 } else {
5852                         hci_copy_identity_address(conn->hdev, &conn->init_addr,
5853                                                   &conn->init_addr_type);
5854                 }
5855         } else {
5856                 conn->resp_addr_type = conn->hdev->adv_addr_type;
5857                 /* Check if the controller has set a Local RPA then it must be
5858                  * used instead or hdev->rpa.
5859                  */
5860                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5861                         conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5862                         bacpy(&conn->resp_addr, local_rpa);
5863                 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5864                         /* In case of ext adv, resp_addr will be updated in
5865                          * Adv Terminated event.
5866                          */
5867                         if (!ext_adv_capable(conn->hdev))
5868                                 bacpy(&conn->resp_addr,
5869                                       &conn->hdev->random_addr);
5870                 } else {
5871                         bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5872                 }
5873
5874                 conn->init_addr_type = bdaddr_type;
5875                 bacpy(&conn->init_addr, bdaddr);
5876
5877                 /* For incoming connections, set the default minimum
5878                  * and maximum connection interval. They will be used
5879                  * to check if the parameters are in range and if not
5880                  * trigger the connection update procedure.
5881                  */
5882                 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5883                 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5884         }
5885 }
5886
5887 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5888                                  bdaddr_t *bdaddr, u8 bdaddr_type,
5889                                  bdaddr_t *local_rpa, u8 role, u16 handle,
5890                                  u16 interval, u16 latency,
5891                                  u16 supervision_timeout)
5892 {
5893         struct hci_conn_params *params;
5894         struct hci_conn *conn;
5895         struct smp_irk *irk;
5896         u8 addr_type;
5897
5898         hci_dev_lock(hdev);
5899
5900         /* All controllers implicitly stop advertising in the event of a
5901          * connection, so ensure that the state bit is cleared.
5902          */
5903         hci_dev_clear_flag(hdev, HCI_LE_ADV);
5904
5905         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
5906         if (!conn) {
5907                 /* In case of error status and there is no connection pending
5908                  * just unlock as there is nothing to cleanup.
5909                  */
5910                 if (status)
5911                         goto unlock;
5912
5913                 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role);
5914                 if (!conn) {
5915                         bt_dev_err(hdev, "no memory for new connection");
5916                         goto unlock;
5917                 }
5918
5919                 conn->dst_type = bdaddr_type;
5920
5921                 /* If we didn't have a hci_conn object previously
5922                  * but we're in central role this must be something
5923                  * initiated using an accept list. Since accept list based
5924                  * connections are not "first class citizens" we don't
5925                  * have full tracking of them. Therefore, we go ahead
5926                  * with a "best effort" approach of determining the
5927                  * initiator address based on the HCI_PRIVACY flag.
5928                  */
5929                 if (conn->out) {
5930                         conn->resp_addr_type = bdaddr_type;
5931                         bacpy(&conn->resp_addr, bdaddr);
5932                         if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5933                                 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5934                                 bacpy(&conn->init_addr, &hdev->rpa);
5935                         } else {
5936                                 hci_copy_identity_address(hdev,
5937                                                           &conn->init_addr,
5938                                                           &conn->init_addr_type);
5939                         }
5940                 }
5941         } else {
5942                 cancel_delayed_work(&conn->le_conn_timeout);
5943         }
5944
5945         /* The HCI_LE_Connection_Complete event is only sent once per connection.
5946          * Processing it more than once per connection can corrupt kernel memory.
5947          *
5948          * As the connection handle is set here for the first time, it indicates
5949          * whether the connection is already set up.
5950          */
5951         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
5952                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
5953                 goto unlock;
5954         }
5955
5956         le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
5957
5958         /* Lookup the identity address from the stored connection
5959          * address and address type.
5960          *
5961          * When establishing connections to an identity address, the
5962          * connection procedure will store the resolvable random
5963          * address first. Now if it can be converted back into the
5964          * identity address, start using the identity address from
5965          * now on.
5966          */
5967         irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
5968         if (irk) {
5969                 bacpy(&conn->dst, &irk->bdaddr);
5970                 conn->dst_type = irk->addr_type;
5971         }
5972
5973         conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
5974
5975         if (handle > HCI_CONN_HANDLE_MAX) {
5976                 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle,
5977                            HCI_CONN_HANDLE_MAX);
5978                 status = HCI_ERROR_INVALID_PARAMETERS;
5979         }
5980
5981         /* All connection failure handling is taken care of by the
5982          * hci_conn_failed function which is triggered by the HCI
5983          * request completion callbacks used for connecting.
5984          */
5985         if (status)
5986                 goto unlock;
5987
5988         /* Drop the connection if it has been aborted */
5989         if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
5990                 hci_conn_drop(conn);
5991                 goto unlock;
5992         }
5993
5994         if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
5995                 addr_type = BDADDR_LE_PUBLIC;
5996         else
5997                 addr_type = BDADDR_LE_RANDOM;
5998
5999         /* Drop the connection if the device is blocked */
6000         if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
6001                 hci_conn_drop(conn);
6002                 goto unlock;
6003         }
6004
6005         if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
6006                 mgmt_device_connected(hdev, conn, NULL, 0);
6007
6008         conn->sec_level = BT_SECURITY_LOW;
6009         conn->handle = handle;
6010         conn->state = BT_CONFIG;
6011
6012         /* Store current advertising instance as connection advertising instance
6013          * when sotfware rotation is in use so it can be re-enabled when
6014          * disconnected.
6015          */
6016         if (!ext_adv_capable(hdev))
6017                 conn->adv_instance = hdev->cur_adv_instance;
6018
6019         conn->le_conn_interval = interval;
6020         conn->le_conn_latency = latency;
6021         conn->le_supv_timeout = supervision_timeout;
6022
6023         hci_debugfs_create_conn(conn);
6024         hci_conn_add_sysfs(conn);
6025
6026         /* The remote features procedure is defined for central
6027          * role only. So only in case of an initiated connection
6028          * request the remote features.
6029          *
6030          * If the local controller supports peripheral-initiated features
6031          * exchange, then requesting the remote features in peripheral
6032          * role is possible. Otherwise just transition into the
6033          * connected state without requesting the remote features.
6034          */
6035         if (conn->out ||
6036             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
6037                 struct hci_cp_le_read_remote_features cp;
6038
6039                 cp.handle = __cpu_to_le16(conn->handle);
6040
6041                 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
6042                              sizeof(cp), &cp);
6043
6044                 hci_conn_hold(conn);
6045         } else {
6046                 conn->state = BT_CONNECTED;
6047                 hci_connect_cfm(conn, status);
6048         }
6049
6050         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
6051                                            conn->dst_type);
6052         if (params) {
6053                 list_del_init(&params->action);
6054                 if (params->conn) {
6055                         hci_conn_drop(params->conn);
6056                         hci_conn_put(params->conn);
6057                         params->conn = NULL;
6058                 }
6059         }
6060
6061 unlock:
6062         hci_update_passive_scan(hdev);
6063         hci_dev_unlock(hdev);
6064 }
6065
6066 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
6067                                      struct sk_buff *skb)
6068 {
6069         struct hci_ev_le_conn_complete *ev = data;
6070
6071         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6072
6073         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6074                              NULL, ev->role, le16_to_cpu(ev->handle),
6075                              le16_to_cpu(ev->interval),
6076                              le16_to_cpu(ev->latency),
6077                              le16_to_cpu(ev->supervision_timeout));
6078 }
6079
6080 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
6081                                          struct sk_buff *skb)
6082 {
6083         struct hci_ev_le_enh_conn_complete *ev = data;
6084
6085         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6086
6087         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6088                              &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
6089                              le16_to_cpu(ev->interval),
6090                              le16_to_cpu(ev->latency),
6091                              le16_to_cpu(ev->supervision_timeout));
6092 }
6093
6094 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6095                                     struct sk_buff *skb)
6096 {
6097         struct hci_evt_le_ext_adv_set_term *ev = data;
6098         struct hci_conn *conn;
6099         struct adv_info *adv, *n;
6100
6101         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6102
6103         /* The Bluetooth Core 5.3 specification clearly states that this event
6104          * shall not be sent when the Host disables the advertising set. So in
6105          * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6106          *
6107          * When the Host disables an advertising set, all cleanup is done via
6108          * its command callback and not needed to be duplicated here.
6109          */
6110         if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6111                 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6112                 return;
6113         }
6114
6115         hci_dev_lock(hdev);
6116
6117         adv = hci_find_adv_instance(hdev, ev->handle);
6118
6119         if (ev->status) {
6120                 if (!adv)
6121                         goto unlock;
6122
6123                 /* Remove advertising as it has been terminated */
6124                 hci_remove_adv_instance(hdev, ev->handle);
6125                 mgmt_advertising_removed(NULL, hdev, ev->handle);
6126
6127                 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6128                         if (adv->enabled)
6129                                 goto unlock;
6130                 }
6131
6132                 /* We are no longer advertising, clear HCI_LE_ADV */
6133                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6134                 goto unlock;
6135         }
6136
6137         if (adv)
6138                 adv->enabled = false;
6139
6140         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6141         if (conn) {
6142                 /* Store handle in the connection so the correct advertising
6143                  * instance can be re-enabled when disconnected.
6144                  */
6145                 conn->adv_instance = ev->handle;
6146
6147                 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6148                     bacmp(&conn->resp_addr, BDADDR_ANY))
6149                         goto unlock;
6150
6151                 if (!ev->handle) {
6152                         bacpy(&conn->resp_addr, &hdev->random_addr);
6153                         goto unlock;
6154                 }
6155
6156                 if (adv)
6157                         bacpy(&conn->resp_addr, &adv->random_addr);
6158         }
6159
6160 unlock:
6161         hci_dev_unlock(hdev);
6162 }
6163
6164 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6165                                             struct sk_buff *skb)
6166 {
6167         struct hci_ev_le_conn_update_complete *ev = data;
6168         struct hci_conn *conn;
6169
6170         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6171
6172         if (ev->status)
6173                 return;
6174
6175         hci_dev_lock(hdev);
6176
6177         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6178         if (conn) {
6179 #ifdef TIZEN_BT
6180                 if (ev->status) {
6181                         hci_dev_unlock(hdev);
6182                         mgmt_le_conn_update_failed(hdev, &conn->dst,
6183                                 conn->type, conn->dst_type, ev->status);
6184                         return;
6185                 }
6186 #endif
6187                 conn->le_conn_interval = le16_to_cpu(ev->interval);
6188                 conn->le_conn_latency = le16_to_cpu(ev->latency);
6189                 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6190         }
6191
6192         hci_dev_unlock(hdev);
6193
6194 #ifdef TIZEN_BT
6195         mgmt_le_conn_updated(hdev, &conn->dst, conn->type,
6196                                 conn->dst_type, conn->le_conn_interval,
6197                                 conn->le_conn_latency, conn->le_supv_timeout);
6198 #endif
6199 }
6200
6201 /* This function requires the caller holds hdev->lock */
6202 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6203                                               bdaddr_t *addr,
6204                                               u8 addr_type, bool addr_resolved,
6205                                               u8 adv_type)
6206 {
6207         struct hci_conn *conn;
6208         struct hci_conn_params *params;
6209
6210         /* If the event is not connectable don't proceed further */
6211         if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6212                 return NULL;
6213
6214         /* Ignore if the device is blocked or hdev is suspended */
6215         if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6216             hdev->suspended)
6217                 return NULL;
6218
6219         /* Most controller will fail if we try to create new connections
6220          * while we have an existing one in peripheral role.
6221          */
6222         if (hdev->conn_hash.le_num_peripheral > 0 &&
6223             (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6224              !(hdev->le_states[3] & 0x10)))
6225                 return NULL;
6226
6227         /* If we're not connectable only connect devices that we have in
6228          * our pend_le_conns list.
6229          */
6230         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6231                                            addr_type);
6232         if (!params)
6233                 return NULL;
6234
6235         if (!params->explicit_connect) {
6236                 switch (params->auto_connect) {
6237                 case HCI_AUTO_CONN_DIRECT:
6238                         /* Only devices advertising with ADV_DIRECT_IND are
6239                          * triggering a connection attempt. This is allowing
6240                          * incoming connections from peripheral devices.
6241                          */
6242                         if (adv_type != LE_ADV_DIRECT_IND)
6243                                 return NULL;
6244                         break;
6245                 case HCI_AUTO_CONN_ALWAYS:
6246                         /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6247                          * are triggering a connection attempt. This means
6248                          * that incoming connections from peripheral device are
6249                          * accepted and also outgoing connections to peripheral
6250                          * devices are established when found.
6251                          */
6252                         break;
6253                 default:
6254                         return NULL;
6255                 }
6256         }
6257
6258         conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6259                               BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6260                               HCI_ROLE_MASTER);
6261         if (!IS_ERR(conn)) {
6262                 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6263                  * by higher layer that tried to connect, if no then
6264                  * store the pointer since we don't really have any
6265                  * other owner of the object besides the params that
6266                  * triggered it. This way we can abort the connection if
6267                  * the parameters get removed and keep the reference
6268                  * count consistent once the connection is established.
6269                  */
6270
6271                 if (!params->explicit_connect)
6272                         params->conn = hci_conn_get(conn);
6273
6274                 return conn;
6275         }
6276
6277         switch (PTR_ERR(conn)) {
6278         case -EBUSY:
6279                 /* If hci_connect() returns -EBUSY it means there is already
6280                  * an LE connection attempt going on. Since controllers don't
6281                  * support more than one connection attempt at the time, we
6282                  * don't consider this an error case.
6283                  */
6284                 break;
6285         default:
6286                 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6287                 return NULL;
6288         }
6289
6290         return NULL;
6291 }
6292
6293 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6294                                u8 bdaddr_type, bdaddr_t *direct_addr,
6295                                u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6296                                bool ext_adv, bool ctl_time, u64 instant)
6297 {
6298         struct discovery_state *d = &hdev->discovery;
6299         struct smp_irk *irk;
6300         struct hci_conn *conn;
6301         bool match, bdaddr_resolved;
6302         u32 flags;
6303         u8 *ptr;
6304
6305         switch (type) {
6306         case LE_ADV_IND:
6307         case LE_ADV_DIRECT_IND:
6308         case LE_ADV_SCAN_IND:
6309         case LE_ADV_NONCONN_IND:
6310         case LE_ADV_SCAN_RSP:
6311                 break;
6312         default:
6313                 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6314                                        "type: 0x%02x", type);
6315                 return;
6316         }
6317
6318         if (!ext_adv && len > HCI_MAX_AD_LENGTH) {
6319                 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes");
6320                 return;
6321         }
6322
6323         /* Find the end of the data in case the report contains padded zero
6324          * bytes at the end causing an invalid length value.
6325          *
6326          * When data is NULL, len is 0 so there is no need for extra ptr
6327          * check as 'ptr < data + 0' is already false in such case.
6328          */
6329         for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6330                 if (ptr + 1 + *ptr > data + len)
6331                         break;
6332         }
6333
6334         /* Adjust for actual length. This handles the case when remote
6335          * device is advertising with incorrect data length.
6336          */
6337         len = ptr - data;
6338
6339         /* If the direct address is present, then this report is from
6340          * a LE Direct Advertising Report event. In that case it is
6341          * important to see if the address is matching the local
6342          * controller address.
6343          */
6344         if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6345                 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6346                                                   &bdaddr_resolved);
6347
6348                 /* Only resolvable random addresses are valid for these
6349                  * kind of reports and others can be ignored.
6350                  */
6351                 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6352                         return;
6353
6354                 /* If the controller is not using resolvable random
6355                  * addresses, then this report can be ignored.
6356                  */
6357                 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6358                         return;
6359
6360                 /* If the local IRK of the controller does not match
6361                  * with the resolvable random address provided, then
6362                  * this report can be ignored.
6363                  */
6364                 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6365                         return;
6366         }
6367
6368         /* Check if we need to convert to identity address */
6369         irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6370         if (irk) {
6371                 bdaddr = &irk->bdaddr;
6372                 bdaddr_type = irk->addr_type;
6373         }
6374
6375         bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6376
6377         /* Check if we have been requested to connect to this device.
6378          *
6379          * direct_addr is set only for directed advertising reports (it is NULL
6380          * for advertising reports) and is already verified to be RPA above.
6381          */
6382         conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6383                                      type);
6384         if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) {
6385                 /* Store report for later inclusion by
6386                  * mgmt_device_connected
6387                  */
6388                 memcpy(conn->le_adv_data, data, len);
6389                 conn->le_adv_data_len = len;
6390         }
6391
6392         if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6393                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6394         else
6395                 flags = 0;
6396
6397         /* All scan results should be sent up for Mesh systems */
6398         if (hci_dev_test_flag(hdev, HCI_MESH)) {
6399                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6400                                   rssi, flags, data, len, NULL, 0, instant);
6401                 return;
6402         }
6403
6404         /* Passive scanning shouldn't trigger any device found events,
6405          * except for devices marked as CONN_REPORT for which we do send
6406          * device found events, or advertisement monitoring requested.
6407          */
6408         if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6409                 if (type == LE_ADV_DIRECT_IND)
6410                         return;
6411
6412                 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6413                                                bdaddr, bdaddr_type) &&
6414                     idr_is_empty(&hdev->adv_monitors_idr))
6415                         return;
6416
6417                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6418                                   rssi, flags, data, len, NULL, 0, 0);
6419                 return;
6420         }
6421
6422         /* When receiving a scan response, then there is no way to
6423          * know if the remote device is connectable or not. However
6424          * since scan responses are merged with a previously seen
6425          * advertising report, the flags field from that report
6426          * will be used.
6427          *
6428          * In the unlikely case that a controller just sends a scan
6429          * response event that doesn't match the pending report, then
6430          * it is marked as a standalone SCAN_RSP.
6431          */
6432         if (type == LE_ADV_SCAN_RSP)
6433                 flags = MGMT_DEV_FOUND_SCAN_RSP;
6434
6435         /* If there's nothing pending either store the data from this
6436          * event or send an immediate device found event if the data
6437          * should not be stored for later.
6438          */
6439         if (!ext_adv && !has_pending_adv_report(hdev)) {
6440                 /* If the report will trigger a SCAN_REQ store it for
6441                  * later merging.
6442                  */
6443                 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6444                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6445                                                  rssi, flags, data, len);
6446                         return;
6447                 }
6448
6449                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6450                                   rssi, flags, data, len, NULL, 0, 0);
6451                 return;
6452         }
6453
6454         /* Check if the pending report is for the same device as the new one */
6455         match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6456                  bdaddr_type == d->last_adv_addr_type);
6457
6458         /* If the pending data doesn't match this report or this isn't a
6459          * scan response (e.g. we got a duplicate ADV_IND) then force
6460          * sending of the pending data.
6461          */
6462         if (type != LE_ADV_SCAN_RSP || !match) {
6463                 /* Send out whatever is in the cache, but skip duplicates */
6464                 if (!match)
6465                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6466                                           d->last_adv_addr_type, NULL,
6467                                           d->last_adv_rssi, d->last_adv_flags,
6468                                           d->last_adv_data,
6469                                           d->last_adv_data_len, NULL, 0, 0);
6470
6471                 /* If the new report will trigger a SCAN_REQ store it for
6472                  * later merging.
6473                  */
6474                 if (!ext_adv && (type == LE_ADV_IND ||
6475                                  type == LE_ADV_SCAN_IND)) {
6476                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6477                                                  rssi, flags, data, len);
6478                         return;
6479                 }
6480
6481                 /* The advertising reports cannot be merged, so clear
6482                  * the pending report and send out a device found event.
6483                  */
6484                 clear_pending_adv_report(hdev);
6485                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6486                                   rssi, flags, data, len, NULL, 0, 0);
6487                 return;
6488         }
6489
6490         /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6491          * the new event is a SCAN_RSP. We can therefore proceed with
6492          * sending a merged device found event.
6493          */
6494         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6495                           d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6496                           d->last_adv_data, d->last_adv_data_len, data, len, 0);
6497         clear_pending_adv_report(hdev);
6498 }
6499
6500 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6501                                   struct sk_buff *skb)
6502 {
6503         struct hci_ev_le_advertising_report *ev = data;
6504         u64 instant = jiffies;
6505
6506         if (!ev->num)
6507                 return;
6508
6509         hci_dev_lock(hdev);
6510
6511         while (ev->num--) {
6512                 struct hci_ev_le_advertising_info *info;
6513                 s8 rssi;
6514
6515                 info = hci_le_ev_skb_pull(hdev, skb,
6516                                           HCI_EV_LE_ADVERTISING_REPORT,
6517                                           sizeof(*info));
6518                 if (!info)
6519                         break;
6520
6521                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6522                                         info->length + 1))
6523                         break;
6524
6525                 if (info->length <= HCI_MAX_AD_LENGTH) {
6526                         rssi = info->data[info->length];
6527                         process_adv_report(hdev, info->type, &info->bdaddr,
6528                                            info->bdaddr_type, NULL, 0, rssi,
6529                                            info->data, info->length, false,
6530                                            false, instant);
6531                 } else {
6532                         bt_dev_err(hdev, "Dropping invalid advertising data");
6533                 }
6534         }
6535
6536         hci_dev_unlock(hdev);
6537 }
6538
6539 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6540 {
6541         if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6542                 switch (evt_type) {
6543                 case LE_LEGACY_ADV_IND:
6544                         return LE_ADV_IND;
6545                 case LE_LEGACY_ADV_DIRECT_IND:
6546                         return LE_ADV_DIRECT_IND;
6547                 case LE_LEGACY_ADV_SCAN_IND:
6548                         return LE_ADV_SCAN_IND;
6549                 case LE_LEGACY_NONCONN_IND:
6550                         return LE_ADV_NONCONN_IND;
6551                 case LE_LEGACY_SCAN_RSP_ADV:
6552                 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6553                         return LE_ADV_SCAN_RSP;
6554                 }
6555
6556                 goto invalid;
6557         }
6558
6559         if (evt_type & LE_EXT_ADV_CONN_IND) {
6560                 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6561                         return LE_ADV_DIRECT_IND;
6562
6563                 return LE_ADV_IND;
6564         }
6565
6566         if (evt_type & LE_EXT_ADV_SCAN_RSP)
6567                 return LE_ADV_SCAN_RSP;
6568
6569         if (evt_type & LE_EXT_ADV_SCAN_IND)
6570                 return LE_ADV_SCAN_IND;
6571
6572         if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6573             evt_type & LE_EXT_ADV_DIRECT_IND)
6574                 return LE_ADV_NONCONN_IND;
6575
6576 invalid:
6577         bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6578                                evt_type);
6579
6580         return LE_ADV_INVALID;
6581 }
6582
6583 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6584                                       struct sk_buff *skb)
6585 {
6586         struct hci_ev_le_ext_adv_report *ev = data;
6587         u64 instant = jiffies;
6588
6589         if (!ev->num)
6590                 return;
6591
6592         hci_dev_lock(hdev);
6593
6594         while (ev->num--) {
6595                 struct hci_ev_le_ext_adv_info *info;
6596                 u8 legacy_evt_type;
6597                 u16 evt_type;
6598
6599                 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6600                                           sizeof(*info));
6601                 if (!info)
6602                         break;
6603
6604                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6605                                         info->length))
6606                         break;
6607
6608                 evt_type = __le16_to_cpu(info->type);
6609                 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6610                 if (legacy_evt_type != LE_ADV_INVALID) {
6611                         process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6612                                            info->bdaddr_type, NULL, 0,
6613                                            info->rssi, info->data, info->length,
6614                                            !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6615                                            false, instant);
6616                 }
6617         }
6618
6619         hci_dev_unlock(hdev);
6620 }
6621
6622 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6623 {
6624         struct hci_cp_le_pa_term_sync cp;
6625
6626         memset(&cp, 0, sizeof(cp));
6627         cp.handle = handle;
6628
6629         return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6630 }
6631
6632 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6633                                             struct sk_buff *skb)
6634 {
6635         struct hci_ev_le_pa_sync_established *ev = data;
6636         int mask = hdev->link_mode;
6637         __u8 flags = 0;
6638
6639         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6640
6641         if (ev->status)
6642                 return;
6643
6644         hci_dev_lock(hdev);
6645
6646         hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6647
6648         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6649         if (!(mask & HCI_LM_ACCEPT))
6650                 hci_le_pa_term_sync(hdev, ev->handle);
6651
6652         hci_dev_unlock(hdev);
6653 }
6654
6655 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6656                                             struct sk_buff *skb)
6657 {
6658         struct hci_ev_le_remote_feat_complete *ev = data;
6659         struct hci_conn *conn;
6660
6661         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6662
6663         hci_dev_lock(hdev);
6664
6665         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6666         if (conn) {
6667                 if (!ev->status)
6668                         memcpy(conn->features[0], ev->features, 8);
6669
6670                 if (conn->state == BT_CONFIG) {
6671                         __u8 status;
6672
6673                         /* If the local controller supports peripheral-initiated
6674                          * features exchange, but the remote controller does
6675                          * not, then it is possible that the error code 0x1a
6676                          * for unsupported remote feature gets returned.
6677                          *
6678                          * In this specific case, allow the connection to
6679                          * transition into connected state and mark it as
6680                          * successful.
6681                          */
6682                         if (!conn->out && ev->status == 0x1a &&
6683                             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6684                                 status = 0x00;
6685                         else
6686                                 status = ev->status;
6687
6688                         conn->state = BT_CONNECTED;
6689                         hci_connect_cfm(conn, status);
6690                         hci_conn_drop(conn);
6691                 }
6692         }
6693
6694         hci_dev_unlock(hdev);
6695 }
6696
6697 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6698                                    struct sk_buff *skb)
6699 {
6700         struct hci_ev_le_ltk_req *ev = data;
6701         struct hci_cp_le_ltk_reply cp;
6702         struct hci_cp_le_ltk_neg_reply neg;
6703         struct hci_conn *conn;
6704         struct smp_ltk *ltk;
6705
6706         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6707
6708         hci_dev_lock(hdev);
6709
6710         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6711         if (conn == NULL)
6712                 goto not_found;
6713
6714         ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6715         if (!ltk)
6716                 goto not_found;
6717
6718         if (smp_ltk_is_sc(ltk)) {
6719                 /* With SC both EDiv and Rand are set to zero */
6720                 if (ev->ediv || ev->rand)
6721                         goto not_found;
6722         } else {
6723                 /* For non-SC keys check that EDiv and Rand match */
6724                 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6725                         goto not_found;
6726         }
6727
6728         memcpy(cp.ltk, ltk->val, ltk->enc_size);
6729         memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6730         cp.handle = cpu_to_le16(conn->handle);
6731
6732         conn->pending_sec_level = smp_ltk_sec_level(ltk);
6733
6734         conn->enc_key_size = ltk->enc_size;
6735
6736         hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6737
6738         /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6739          * temporary key used to encrypt a connection following
6740          * pairing. It is used during the Encrypted Session Setup to
6741          * distribute the keys. Later, security can be re-established
6742          * using a distributed LTK.
6743          */
6744         if (ltk->type == SMP_STK) {
6745                 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6746                 list_del_rcu(&ltk->list);
6747                 kfree_rcu(ltk, rcu);
6748         } else {
6749                 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6750         }
6751
6752         hci_dev_unlock(hdev);
6753
6754         return;
6755
6756 not_found:
6757         neg.handle = ev->handle;
6758         hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6759         hci_dev_unlock(hdev);
6760 }
6761
6762 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6763                                       u8 reason)
6764 {
6765         struct hci_cp_le_conn_param_req_neg_reply cp;
6766
6767         cp.handle = cpu_to_le16(handle);
6768         cp.reason = reason;
6769
6770         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6771                      &cp);
6772 }
6773
6774 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6775                                              struct sk_buff *skb)
6776 {
6777         struct hci_ev_le_remote_conn_param_req *ev = data;
6778         struct hci_cp_le_conn_param_req_reply cp;
6779         struct hci_conn *hcon;
6780         u16 handle, min, max, latency, timeout;
6781
6782         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6783
6784         handle = le16_to_cpu(ev->handle);
6785         min = le16_to_cpu(ev->interval_min);
6786         max = le16_to_cpu(ev->interval_max);
6787         latency = le16_to_cpu(ev->latency);
6788         timeout = le16_to_cpu(ev->timeout);
6789
6790         hcon = hci_conn_hash_lookup_handle(hdev, handle);
6791         if (!hcon || hcon->state != BT_CONNECTED)
6792                 return send_conn_param_neg_reply(hdev, handle,
6793                                                  HCI_ERROR_UNKNOWN_CONN_ID);
6794
6795         if (hci_check_conn_params(min, max, latency, timeout))
6796                 return send_conn_param_neg_reply(hdev, handle,
6797                                                  HCI_ERROR_INVALID_LL_PARAMS);
6798
6799         if (hcon->role == HCI_ROLE_MASTER) {
6800                 struct hci_conn_params *params;
6801                 u8 store_hint;
6802
6803                 hci_dev_lock(hdev);
6804
6805                 params = hci_conn_params_lookup(hdev, &hcon->dst,
6806                                                 hcon->dst_type);
6807                 if (params) {
6808                         params->conn_min_interval = min;
6809                         params->conn_max_interval = max;
6810                         params->conn_latency = latency;
6811                         params->supervision_timeout = timeout;
6812                         store_hint = 0x01;
6813                 } else {
6814                         store_hint = 0x00;
6815                 }
6816
6817                 hci_dev_unlock(hdev);
6818
6819                 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6820                                     store_hint, min, max, latency, timeout);
6821         }
6822
6823         cp.handle = ev->handle;
6824         cp.interval_min = ev->interval_min;
6825         cp.interval_max = ev->interval_max;
6826         cp.latency = ev->latency;
6827         cp.timeout = ev->timeout;
6828         cp.min_ce_len = 0;
6829         cp.max_ce_len = 0;
6830
6831         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6832 }
6833
6834 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6835                                          struct sk_buff *skb)
6836 {
6837         struct hci_ev_le_direct_adv_report *ev = data;
6838         u64 instant = jiffies;
6839         int i;
6840
6841         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6842                                 flex_array_size(ev, info, ev->num)))
6843                 return;
6844
6845         if (!ev->num)
6846                 return;
6847
6848         hci_dev_lock(hdev);
6849
6850         for (i = 0; i < ev->num; i++) {
6851                 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6852
6853                 process_adv_report(hdev, info->type, &info->bdaddr,
6854                                    info->bdaddr_type, &info->direct_addr,
6855                                    info->direct_addr_type, info->rssi, NULL, 0,
6856                                    false, false, instant);
6857         }
6858
6859         hci_dev_unlock(hdev);
6860 }
6861
6862 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6863                                   struct sk_buff *skb)
6864 {
6865         struct hci_ev_le_phy_update_complete *ev = data;
6866         struct hci_conn *conn;
6867
6868         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6869
6870         if (ev->status)
6871                 return;
6872
6873         hci_dev_lock(hdev);
6874
6875         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6876         if (!conn)
6877                 goto unlock;
6878
6879         conn->le_tx_phy = ev->tx_phy;
6880         conn->le_rx_phy = ev->rx_phy;
6881
6882 unlock:
6883         hci_dev_unlock(hdev);
6884 }
6885
6886 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
6887                                         struct sk_buff *skb)
6888 {
6889         struct hci_evt_le_cis_established *ev = data;
6890         struct hci_conn *conn;
6891         u16 handle = __le16_to_cpu(ev->handle);
6892
6893         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6894
6895         hci_dev_lock(hdev);
6896
6897         conn = hci_conn_hash_lookup_handle(hdev, handle);
6898         if (!conn) {
6899                 bt_dev_err(hdev,
6900                            "Unable to find connection with handle 0x%4.4x",
6901                            handle);
6902                 goto unlock;
6903         }
6904
6905         if (conn->type != ISO_LINK) {
6906                 bt_dev_err(hdev,
6907                            "Invalid connection link type handle 0x%4.4x",
6908                            handle);
6909                 goto unlock;
6910         }
6911
6912         if (conn->role == HCI_ROLE_SLAVE) {
6913                 __le32 interval;
6914
6915                 memset(&interval, 0, sizeof(interval));
6916
6917                 memcpy(&interval, ev->c_latency, sizeof(ev->c_latency));
6918                 conn->iso_qos.in.interval = le32_to_cpu(interval);
6919                 memcpy(&interval, ev->p_latency, sizeof(ev->p_latency));
6920                 conn->iso_qos.out.interval = le32_to_cpu(interval);
6921                 conn->iso_qos.in.latency = le16_to_cpu(ev->interval);
6922                 conn->iso_qos.out.latency = le16_to_cpu(ev->interval);
6923                 conn->iso_qos.in.sdu = le16_to_cpu(ev->c_mtu);
6924                 conn->iso_qos.out.sdu = le16_to_cpu(ev->p_mtu);
6925                 conn->iso_qos.in.phy = ev->c_phy;
6926                 conn->iso_qos.out.phy = ev->p_phy;
6927         }
6928
6929         if (!ev->status) {
6930                 conn->state = BT_CONNECTED;
6931                 hci_debugfs_create_conn(conn);
6932                 hci_conn_add_sysfs(conn);
6933                 hci_iso_setup_path(conn);
6934                 goto unlock;
6935         }
6936
6937         hci_connect_cfm(conn, ev->status);
6938         hci_conn_del(conn);
6939
6940 unlock:
6941         hci_dev_unlock(hdev);
6942 }
6943
6944 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
6945 {
6946         struct hci_cp_le_reject_cis cp;
6947
6948         memset(&cp, 0, sizeof(cp));
6949         cp.handle = handle;
6950         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
6951         hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
6952 }
6953
6954 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
6955 {
6956         struct hci_cp_le_accept_cis cp;
6957
6958         memset(&cp, 0, sizeof(cp));
6959         cp.handle = handle;
6960         hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
6961 }
6962
6963 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
6964                                struct sk_buff *skb)
6965 {
6966         struct hci_evt_le_cis_req *ev = data;
6967         u16 acl_handle, cis_handle;
6968         struct hci_conn *acl, *cis;
6969         int mask;
6970         __u8 flags = 0;
6971
6972         acl_handle = __le16_to_cpu(ev->acl_handle);
6973         cis_handle = __le16_to_cpu(ev->cis_handle);
6974
6975         bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
6976                    acl_handle, cis_handle, ev->cig_id, ev->cis_id);
6977
6978         hci_dev_lock(hdev);
6979
6980         acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
6981         if (!acl)
6982                 goto unlock;
6983
6984         mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
6985         if (!(mask & HCI_LM_ACCEPT)) {
6986                 hci_le_reject_cis(hdev, ev->cis_handle);
6987                 goto unlock;
6988         }
6989
6990         cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
6991         if (!cis) {
6992                 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE);
6993                 if (!cis) {
6994                         hci_le_reject_cis(hdev, ev->cis_handle);
6995                         goto unlock;
6996                 }
6997                 cis->handle = cis_handle;
6998         }
6999
7000         cis->iso_qos.cig = ev->cig_id;
7001         cis->iso_qos.cis = ev->cis_id;
7002
7003         if (!(flags & HCI_PROTO_DEFER)) {
7004                 hci_le_accept_cis(hdev, ev->cis_handle);
7005         } else {
7006                 cis->state = BT_CONNECT2;
7007                 hci_connect_cfm(cis, 0);
7008         }
7009
7010 unlock:
7011         hci_dev_unlock(hdev);
7012 }
7013
7014 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
7015                                            struct sk_buff *skb)
7016 {
7017         struct hci_evt_le_create_big_complete *ev = data;
7018         struct hci_conn *conn;
7019
7020         BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
7021
7022         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
7023                                 flex_array_size(ev, bis_handle, ev->num_bis)))
7024                 return;
7025
7026         hci_dev_lock(hdev);
7027
7028         conn = hci_conn_hash_lookup_big(hdev, ev->handle);
7029         if (!conn)
7030                 goto unlock;
7031
7032         if (conn->type != ISO_LINK) {
7033                 bt_dev_err(hdev,
7034                            "Invalid connection link type handle 0x%2.2x",
7035                            ev->handle);
7036                 goto unlock;
7037         }
7038
7039         if (ev->num_bis)
7040                 conn->handle = __le16_to_cpu(ev->bis_handle[0]);
7041
7042         if (!ev->status) {
7043                 conn->state = BT_CONNECTED;
7044                 hci_debugfs_create_conn(conn);
7045                 hci_conn_add_sysfs(conn);
7046                 hci_iso_setup_path(conn);
7047                 goto unlock;
7048         }
7049
7050         hci_connect_cfm(conn, ev->status);
7051         hci_conn_del(conn);
7052
7053 unlock:
7054         hci_dev_unlock(hdev);
7055 }
7056
7057 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
7058                                             struct sk_buff *skb)
7059 {
7060         struct hci_evt_le_big_sync_estabilished *ev = data;
7061         struct hci_conn *bis;
7062         int i;
7063
7064         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7065
7066         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7067                                 flex_array_size(ev, bis, ev->num_bis)))
7068                 return;
7069
7070         if (ev->status)
7071                 return;
7072
7073         hci_dev_lock(hdev);
7074
7075         for (i = 0; i < ev->num_bis; i++) {
7076                 u16 handle = le16_to_cpu(ev->bis[i]);
7077                 __le32 interval;
7078
7079                 bis = hci_conn_hash_lookup_handle(hdev, handle);
7080                 if (!bis) {
7081                         bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
7082                                            HCI_ROLE_SLAVE);
7083                         if (!bis)
7084                                 continue;
7085                         bis->handle = handle;
7086                 }
7087
7088                 bis->iso_qos.big = ev->handle;
7089                 memset(&interval, 0, sizeof(interval));
7090                 memcpy(&interval, ev->latency, sizeof(ev->latency));
7091                 bis->iso_qos.in.interval = le32_to_cpu(interval);
7092                 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7093                 bis->iso_qos.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7094                 bis->iso_qos.in.sdu = le16_to_cpu(ev->max_pdu);
7095
7096                 hci_iso_setup_path(bis);
7097         }
7098
7099         hci_dev_unlock(hdev);
7100 }
7101
7102 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7103                                            struct sk_buff *skb)
7104 {
7105         struct hci_evt_le_big_info_adv_report *ev = data;
7106         int mask = hdev->link_mode;
7107         __u8 flags = 0;
7108
7109         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7110
7111         hci_dev_lock(hdev);
7112
7113         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7114         if (!(mask & HCI_LM_ACCEPT))
7115                 hci_le_pa_term_sync(hdev, ev->sync_handle);
7116
7117         hci_dev_unlock(hdev);
7118 }
7119
7120 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7121 [_op] = { \
7122         .func = _func, \
7123         .min_len = _min_len, \
7124         .max_len = _max_len, \
7125 }
7126
7127 #define HCI_LE_EV(_op, _func, _len) \
7128         HCI_LE_EV_VL(_op, _func, _len, _len)
7129
7130 #define HCI_LE_EV_STATUS(_op, _func) \
7131         HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7132
7133 /* Entries in this table shall have their position according to the subevent
7134  * opcode they handle so the use of the macros above is recommend since it does
7135  * attempt to initialize at its proper index using Designated Initializers that
7136  * way events without a callback function can be ommited.
7137  */
7138 static const struct hci_le_ev {
7139         void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7140         u16  min_len;
7141         u16  max_len;
7142 } hci_le_ev_table[U8_MAX + 1] = {
7143         /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7144         HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7145                   sizeof(struct hci_ev_le_conn_complete)),
7146         /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7147         HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7148                      sizeof(struct hci_ev_le_advertising_report),
7149                      HCI_MAX_EVENT_SIZE),
7150         /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7151         HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7152                   hci_le_conn_update_complete_evt,
7153                   sizeof(struct hci_ev_le_conn_update_complete)),
7154         /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7155         HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7156                   hci_le_remote_feat_complete_evt,
7157                   sizeof(struct hci_ev_le_remote_feat_complete)),
7158         /* [0x05 = HCI_EV_LE_LTK_REQ] */
7159         HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7160                   sizeof(struct hci_ev_le_ltk_req)),
7161         /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7162         HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7163                   hci_le_remote_conn_param_req_evt,
7164                   sizeof(struct hci_ev_le_remote_conn_param_req)),
7165         /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7166         HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7167                   hci_le_enh_conn_complete_evt,
7168                   sizeof(struct hci_ev_le_enh_conn_complete)),
7169         /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7170         HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7171                      sizeof(struct hci_ev_le_direct_adv_report),
7172                      HCI_MAX_EVENT_SIZE),
7173         /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7174         HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7175                   sizeof(struct hci_ev_le_phy_update_complete)),
7176         /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7177         HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7178                      sizeof(struct hci_ev_le_ext_adv_report),
7179                      HCI_MAX_EVENT_SIZE),
7180         /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7181         HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7182                   hci_le_pa_sync_estabilished_evt,
7183                   sizeof(struct hci_ev_le_pa_sync_established)),
7184         /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7185         HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7186                   sizeof(struct hci_evt_le_ext_adv_set_term)),
7187         /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7188         HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7189                   sizeof(struct hci_evt_le_cis_established)),
7190         /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7191         HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7192                   sizeof(struct hci_evt_le_cis_req)),
7193         /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7194         HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7195                      hci_le_create_big_complete_evt,
7196                      sizeof(struct hci_evt_le_create_big_complete),
7197                      HCI_MAX_EVENT_SIZE),
7198         /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7199         HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7200                      hci_le_big_sync_established_evt,
7201                      sizeof(struct hci_evt_le_big_sync_estabilished),
7202                      HCI_MAX_EVENT_SIZE),
7203         /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7204         HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7205                      hci_le_big_info_adv_report_evt,
7206                      sizeof(struct hci_evt_le_big_info_adv_report),
7207                      HCI_MAX_EVENT_SIZE),
7208 };
7209
7210 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7211                             struct sk_buff *skb, u16 *opcode, u8 *status,
7212                             hci_req_complete_t *req_complete,
7213                             hci_req_complete_skb_t *req_complete_skb)
7214 {
7215         struct hci_ev_le_meta *ev = data;
7216         const struct hci_le_ev *subev;
7217
7218         bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7219
7220         /* Only match event if command OGF is for LE */
7221         if (hdev->sent_cmd &&
7222             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7223             hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7224                 *opcode = hci_skb_opcode(hdev->sent_cmd);
7225                 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7226                                      req_complete_skb);
7227         }
7228
7229         subev = &hci_le_ev_table[ev->subevent];
7230         if (!subev->func)
7231                 return;
7232
7233         if (skb->len < subev->min_len) {
7234                 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7235                            ev->subevent, skb->len, subev->min_len);
7236                 return;
7237         }
7238
7239         /* Just warn if the length is over max_len size it still be
7240          * possible to partially parse the event so leave to callback to
7241          * decide if that is acceptable.
7242          */
7243         if (skb->len > subev->max_len)
7244                 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7245                             ev->subevent, skb->len, subev->max_len);
7246         data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7247         if (!data)
7248                 return;
7249
7250         subev->func(hdev, data, skb);
7251 }
7252
7253 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7254                                  u8 event, struct sk_buff *skb)
7255 {
7256         struct hci_ev_cmd_complete *ev;
7257         struct hci_event_hdr *hdr;
7258
7259         if (!skb)
7260                 return false;
7261
7262         hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7263         if (!hdr)
7264                 return false;
7265
7266         if (event) {
7267                 if (hdr->evt != event)
7268                         return false;
7269                 return true;
7270         }
7271
7272         /* Check if request ended in Command Status - no way to retrieve
7273          * any extra parameters in this case.
7274          */
7275         if (hdr->evt == HCI_EV_CMD_STATUS)
7276                 return false;
7277
7278         if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7279                 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7280                            hdr->evt);
7281                 return false;
7282         }
7283
7284         ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7285         if (!ev)
7286                 return false;
7287
7288         if (opcode != __le16_to_cpu(ev->opcode)) {
7289                 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7290                        __le16_to_cpu(ev->opcode));
7291                 return false;
7292         }
7293
7294         return true;
7295 }
7296
7297 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7298                                   struct sk_buff *skb)
7299 {
7300         struct hci_ev_le_advertising_info *adv;
7301         struct hci_ev_le_direct_adv_info *direct_adv;
7302         struct hci_ev_le_ext_adv_info *ext_adv;
7303         const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7304         const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7305
7306         hci_dev_lock(hdev);
7307
7308         /* If we are currently suspended and this is the first BT event seen,
7309          * save the wake reason associated with the event.
7310          */
7311         if (!hdev->suspended || hdev->wake_reason)
7312                 goto unlock;
7313
7314         /* Default to remote wake. Values for wake_reason are documented in the
7315          * Bluez mgmt api docs.
7316          */
7317         hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7318
7319         /* Once configured for remote wakeup, we should only wake up for
7320          * reconnections. It's useful to see which device is waking us up so
7321          * keep track of the bdaddr of the connection event that woke us up.
7322          */
7323         if (event == HCI_EV_CONN_REQUEST) {
7324                 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7325                 hdev->wake_addr_type = BDADDR_BREDR;
7326         } else if (event == HCI_EV_CONN_COMPLETE) {
7327                 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7328                 hdev->wake_addr_type = BDADDR_BREDR;
7329         } else if (event == HCI_EV_LE_META) {
7330                 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7331                 u8 subevent = le_ev->subevent;
7332                 u8 *ptr = &skb->data[sizeof(*le_ev)];
7333                 u8 num_reports = *ptr;
7334
7335                 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7336                      subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7337                      subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7338                     num_reports) {
7339                         adv = (void *)(ptr + 1);
7340                         direct_adv = (void *)(ptr + 1);
7341                         ext_adv = (void *)(ptr + 1);
7342
7343                         switch (subevent) {
7344                         case HCI_EV_LE_ADVERTISING_REPORT:
7345                                 bacpy(&hdev->wake_addr, &adv->bdaddr);
7346                                 hdev->wake_addr_type = adv->bdaddr_type;
7347                                 break;
7348                         case HCI_EV_LE_DIRECT_ADV_REPORT:
7349                                 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7350                                 hdev->wake_addr_type = direct_adv->bdaddr_type;
7351                                 break;
7352                         case HCI_EV_LE_EXT_ADV_REPORT:
7353                                 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7354                                 hdev->wake_addr_type = ext_adv->bdaddr_type;
7355                                 break;
7356                         }
7357                 }
7358         } else {
7359                 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7360         }
7361
7362 unlock:
7363         hci_dev_unlock(hdev);
7364 }
7365
7366 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7367 [_op] = { \
7368         .req = false, \
7369         .func = _func, \
7370         .min_len = _min_len, \
7371         .max_len = _max_len, \
7372 }
7373
7374 #define HCI_EV(_op, _func, _len) \
7375         HCI_EV_VL(_op, _func, _len, _len)
7376
7377 #define HCI_EV_STATUS(_op, _func) \
7378         HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7379
7380 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7381 [_op] = { \
7382         .req = true, \
7383         .func_req = _func, \
7384         .min_len = _min_len, \
7385         .max_len = _max_len, \
7386 }
7387
7388 #define HCI_EV_REQ(_op, _func, _len) \
7389         HCI_EV_REQ_VL(_op, _func, _len, _len)
7390
7391 /* Entries in this table shall have their position according to the event opcode
7392  * they handle so the use of the macros above is recommend since it does attempt
7393  * to initialize at its proper index using Designated Initializers that way
7394  * events without a callback function don't have entered.
7395  */
7396 static const struct hci_ev {
7397         bool req;
7398         union {
7399                 void (*func)(struct hci_dev *hdev, void *data,
7400                              struct sk_buff *skb);
7401                 void (*func_req)(struct hci_dev *hdev, void *data,
7402                                  struct sk_buff *skb, u16 *opcode, u8 *status,
7403                                  hci_req_complete_t *req_complete,
7404                                  hci_req_complete_skb_t *req_complete_skb);
7405         };
7406         u16  min_len;
7407         u16  max_len;
7408 } hci_ev_table[U8_MAX + 1] = {
7409         /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7410         HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7411         /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7412         HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7413                   sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7414         /* [0x03 = HCI_EV_CONN_COMPLETE] */
7415         HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7416                sizeof(struct hci_ev_conn_complete)),
7417         /* [0x04 = HCI_EV_CONN_REQUEST] */
7418         HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7419                sizeof(struct hci_ev_conn_request)),
7420         /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7421         HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7422                sizeof(struct hci_ev_disconn_complete)),
7423         /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7424         HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7425                sizeof(struct hci_ev_auth_complete)),
7426         /* [0x07 = HCI_EV_REMOTE_NAME] */
7427         HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7428                sizeof(struct hci_ev_remote_name)),
7429         /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7430         HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7431                sizeof(struct hci_ev_encrypt_change)),
7432         /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7433         HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7434                hci_change_link_key_complete_evt,
7435                sizeof(struct hci_ev_change_link_key_complete)),
7436         /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7437         HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7438                sizeof(struct hci_ev_remote_features)),
7439         /* [0x0e = HCI_EV_CMD_COMPLETE] */
7440         HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7441                       sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7442         /* [0x0f = HCI_EV_CMD_STATUS] */
7443         HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7444                    sizeof(struct hci_ev_cmd_status)),
7445         /* [0x10 = HCI_EV_CMD_STATUS] */
7446         HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7447                sizeof(struct hci_ev_hardware_error)),
7448         /* [0x12 = HCI_EV_ROLE_CHANGE] */
7449         HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7450                sizeof(struct hci_ev_role_change)),
7451         /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7452         HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7453                   sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7454         /* [0x14 = HCI_EV_MODE_CHANGE] */
7455         HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7456                sizeof(struct hci_ev_mode_change)),
7457         /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7458         HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7459                sizeof(struct hci_ev_pin_code_req)),
7460         /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7461         HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7462                sizeof(struct hci_ev_link_key_req)),
7463         /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7464         HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7465                sizeof(struct hci_ev_link_key_notify)),
7466         /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7467         HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7468                sizeof(struct hci_ev_clock_offset)),
7469         /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7470         HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7471                sizeof(struct hci_ev_pkt_type_change)),
7472         /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7473         HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7474                sizeof(struct hci_ev_pscan_rep_mode)),
7475         /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7476         HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7477                   hci_inquiry_result_with_rssi_evt,
7478                   sizeof(struct hci_ev_inquiry_result_rssi),
7479                   HCI_MAX_EVENT_SIZE),
7480         /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7481         HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7482                sizeof(struct hci_ev_remote_ext_features)),
7483         /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7484         HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7485                sizeof(struct hci_ev_sync_conn_complete)),
7486         /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7487         HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7488                   hci_extended_inquiry_result_evt,
7489                   sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7490         /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7491         HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7492                sizeof(struct hci_ev_key_refresh_complete)),
7493         /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7494         HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7495                sizeof(struct hci_ev_io_capa_request)),
7496         /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7497         HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7498                sizeof(struct hci_ev_io_capa_reply)),
7499         /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7500         HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7501                sizeof(struct hci_ev_user_confirm_req)),
7502         /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7503         HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7504                sizeof(struct hci_ev_user_passkey_req)),
7505         /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7506         HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7507                sizeof(struct hci_ev_remote_oob_data_request)),
7508         /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7509         HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7510                sizeof(struct hci_ev_simple_pair_complete)),
7511         /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7512         HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7513                sizeof(struct hci_ev_user_passkey_notify)),
7514         /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7515         HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7516                sizeof(struct hci_ev_keypress_notify)),
7517         /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7518         HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7519                sizeof(struct hci_ev_remote_host_features)),
7520         /* [0x3e = HCI_EV_LE_META] */
7521         HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7522                       sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7523 #if IS_ENABLED(CONFIG_BT_HS)
7524         /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7525         HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7526                sizeof(struct hci_ev_phy_link_complete)),
7527         /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7528         HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7529                sizeof(struct hci_ev_channel_selected)),
7530         /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7531         HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7532                hci_disconn_loglink_complete_evt,
7533                sizeof(struct hci_ev_disconn_logical_link_complete)),
7534         /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7535         HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7536                sizeof(struct hci_ev_logical_link_complete)),
7537         /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7538         HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7539                hci_disconn_phylink_complete_evt,
7540                sizeof(struct hci_ev_disconn_phy_link_complete)),
7541 #endif
7542         /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7543         HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7544                sizeof(struct hci_ev_num_comp_blocks)),
7545 #ifdef TIZEN_BT
7546         /* [0xFF = HCI_EV_VENDOR_SPECIFIC] */
7547         HCI_EV(HCI_EV_VENDOR_SPECIFIC, hci_vendor_specific_evt,
7548                sizeof(struct hci_ev_vendor_specific)),
7549 #else
7550         /* [0xff = HCI_EV_VENDOR] */
7551         HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7552 #endif
7553 };
7554
7555 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7556                            u16 *opcode, u8 *status,
7557                            hci_req_complete_t *req_complete,
7558                            hci_req_complete_skb_t *req_complete_skb)
7559 {
7560         const struct hci_ev *ev = &hci_ev_table[event];
7561         void *data;
7562
7563         if (!ev->func)
7564                 return;
7565
7566         if (skb->len < ev->min_len) {
7567                 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7568                            event, skb->len, ev->min_len);
7569                 return;
7570         }
7571
7572         /* Just warn if the length is over max_len size it still be
7573          * possible to partially parse the event so leave to callback to
7574          * decide if that is acceptable.
7575          */
7576         if (skb->len > ev->max_len)
7577                 bt_dev_warn_ratelimited(hdev,
7578                                         "unexpected event 0x%2.2x length: %u > %u",
7579                                         event, skb->len, ev->max_len);
7580
7581         data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7582         if (!data)
7583                 return;
7584
7585         if (ev->req)
7586                 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7587                              req_complete_skb);
7588         else
7589                 ev->func(hdev, data, skb);
7590 }
7591
7592 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7593 {
7594         struct hci_event_hdr *hdr = (void *) skb->data;
7595         hci_req_complete_t req_complete = NULL;
7596         hci_req_complete_skb_t req_complete_skb = NULL;
7597         struct sk_buff *orig_skb = NULL;
7598         u8 status = 0, event, req_evt = 0;
7599         u16 opcode = HCI_OP_NOP;
7600
7601         if (skb->len < sizeof(*hdr)) {
7602                 bt_dev_err(hdev, "Malformed HCI Event");
7603                 goto done;
7604         }
7605
7606         kfree_skb(hdev->recv_event);
7607         hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7608
7609         event = hdr->evt;
7610         if (!event) {
7611                 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7612                             event);
7613                 goto done;
7614         }
7615
7616         /* Only match event if command OGF is not for LE */
7617         if (hdev->sent_cmd &&
7618             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7619             hci_skb_event(hdev->sent_cmd) == event) {
7620                 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7621                                      status, &req_complete, &req_complete_skb);
7622                 req_evt = event;
7623         }
7624
7625         /* If it looks like we might end up having to call
7626          * req_complete_skb, store a pristine copy of the skb since the
7627          * various handlers may modify the original one through
7628          * skb_pull() calls, etc.
7629          */
7630         if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7631             event == HCI_EV_CMD_COMPLETE)
7632                 orig_skb = skb_clone(skb, GFP_KERNEL);
7633
7634         skb_pull(skb, HCI_EVENT_HDR_SIZE);
7635
7636         /* Store wake reason if we're suspended */
7637         hci_store_wake_reason(hdev, event, skb);
7638
7639         bt_dev_dbg(hdev, "event 0x%2.2x", event);
7640
7641         hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7642                        &req_complete_skb);
7643
7644         if (req_complete) {
7645                 req_complete(hdev, status, opcode);
7646         } else if (req_complete_skb) {
7647                 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7648                         kfree_skb(orig_skb);
7649                         orig_skb = NULL;
7650                 }
7651                 req_complete_skb(hdev, status, opcode, orig_skb);
7652         }
7653
7654 done:
7655         kfree_skb(orig_skb);
7656         kfree_skb(skb);
7657         hdev->stat.evt_rx++;
7658 }