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                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1796                 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1797                          hdev->discovery.state == DISCOVERY_FINDING)
1798                         queue_work(hdev->workqueue, &hdev->reenable_adv_work);
1799
1800                 break;
1801
1802         default:
1803                 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1804                            enable);
1805                 break;
1806         }
1807
1808         hci_dev_unlock(hdev);
1809 }
1810
1811 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1812                                     struct sk_buff *skb)
1813 {
1814         struct hci_cp_le_set_scan_enable *cp;
1815         struct hci_ev_status *rp = data;
1816
1817         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1818
1819         if (rp->status)
1820                 return rp->status;
1821
1822         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1823         if (!cp)
1824                 return rp->status;
1825
1826         le_set_scan_enable_complete(hdev, cp->enable);
1827
1828         return rp->status;
1829 }
1830
1831 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1832                                         struct sk_buff *skb)
1833 {
1834         struct hci_cp_le_set_ext_scan_enable *cp;
1835         struct hci_ev_status *rp = data;
1836
1837         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1838
1839         if (rp->status)
1840                 return rp->status;
1841
1842         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1843         if (!cp)
1844                 return rp->status;
1845
1846         le_set_scan_enable_complete(hdev, cp->enable);
1847
1848         return rp->status;
1849 }
1850
1851 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1852                                       struct sk_buff *skb)
1853 {
1854         struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1855
1856         bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1857                    rp->num_of_sets);
1858
1859         if (rp->status)
1860                 return rp->status;
1861
1862         hdev->le_num_of_adv_sets = rp->num_of_sets;
1863
1864         return rp->status;
1865 }
1866
1867 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1868                                           struct sk_buff *skb)
1869 {
1870         struct hci_rp_le_read_accept_list_size *rp = data;
1871
1872         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1873
1874         if (rp->status)
1875                 return rp->status;
1876
1877         hdev->le_accept_list_size = rp->size;
1878
1879         return rp->status;
1880 }
1881
1882 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1883                                       struct sk_buff *skb)
1884 {
1885         struct hci_ev_status *rp = data;
1886
1887         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1888
1889         if (rp->status)
1890                 return rp->status;
1891
1892         hci_dev_lock(hdev);
1893         hci_bdaddr_list_clear(&hdev->le_accept_list);
1894         hci_dev_unlock(hdev);
1895
1896         return rp->status;
1897 }
1898
1899 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1900                                        struct sk_buff *skb)
1901 {
1902         struct hci_cp_le_add_to_accept_list *sent;
1903         struct hci_ev_status *rp = data;
1904
1905         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1906
1907         if (rp->status)
1908                 return rp->status;
1909
1910         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1911         if (!sent)
1912                 return rp->status;
1913
1914         hci_dev_lock(hdev);
1915         hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
1916                             sent->bdaddr_type);
1917         hci_dev_unlock(hdev);
1918
1919         return rp->status;
1920 }
1921
1922 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1923                                          struct sk_buff *skb)
1924 {
1925         struct hci_cp_le_del_from_accept_list *sent;
1926         struct hci_ev_status *rp = data;
1927
1928         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1929
1930         if (rp->status)
1931                 return rp->status;
1932
1933         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1934         if (!sent)
1935                 return rp->status;
1936
1937         hci_dev_lock(hdev);
1938         hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
1939                             sent->bdaddr_type);
1940         hci_dev_unlock(hdev);
1941
1942         return rp->status;
1943 }
1944
1945 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1946                                           struct sk_buff *skb)
1947 {
1948         struct hci_rp_le_read_supported_states *rp = data;
1949
1950         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1951
1952         if (rp->status)
1953                 return rp->status;
1954
1955         memcpy(hdev->le_states, rp->le_states, 8);
1956
1957         return rp->status;
1958 }
1959
1960 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
1961                                       struct sk_buff *skb)
1962 {
1963         struct hci_rp_le_read_def_data_len *rp = data;
1964
1965         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1966
1967         if (rp->status)
1968                 return rp->status;
1969
1970         hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1971         hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1972
1973         return rp->status;
1974 }
1975
1976 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
1977                                        struct sk_buff *skb)
1978 {
1979         struct hci_cp_le_write_def_data_len *sent;
1980         struct hci_ev_status *rp = data;
1981
1982         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1983
1984         if (rp->status)
1985                 return rp->status;
1986
1987         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1988         if (!sent)
1989                 return rp->status;
1990
1991         hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
1992         hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
1993
1994         return rp->status;
1995 }
1996
1997 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
1998                                        struct sk_buff *skb)
1999 {
2000         struct hci_cp_le_add_to_resolv_list *sent;
2001         struct hci_ev_status *rp = data;
2002
2003         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2004
2005         if (rp->status)
2006                 return rp->status;
2007
2008         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
2009         if (!sent)
2010                 return rp->status;
2011
2012         hci_dev_lock(hdev);
2013         hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2014                                 sent->bdaddr_type, sent->peer_irk,
2015                                 sent->local_irk);
2016         hci_dev_unlock(hdev);
2017
2018         return rp->status;
2019 }
2020
2021 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
2022                                          struct sk_buff *skb)
2023 {
2024         struct hci_cp_le_del_from_resolv_list *sent;
2025         struct hci_ev_status *rp = data;
2026
2027         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2028
2029         if (rp->status)
2030                 return rp->status;
2031
2032         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
2033         if (!sent)
2034                 return rp->status;
2035
2036         hci_dev_lock(hdev);
2037         hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2038                             sent->bdaddr_type);
2039         hci_dev_unlock(hdev);
2040
2041         return rp->status;
2042 }
2043
2044 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2045                                       struct sk_buff *skb)
2046 {
2047         struct hci_ev_status *rp = data;
2048
2049         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2050
2051         if (rp->status)
2052                 return rp->status;
2053
2054         hci_dev_lock(hdev);
2055         hci_bdaddr_list_clear(&hdev->le_resolv_list);
2056         hci_dev_unlock(hdev);
2057
2058         return rp->status;
2059 }
2060
2061 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2062                                           struct sk_buff *skb)
2063 {
2064         struct hci_rp_le_read_resolv_list_size *rp = data;
2065
2066         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2067
2068         if (rp->status)
2069                 return rp->status;
2070
2071         hdev->le_resolv_list_size = rp->size;
2072
2073         return rp->status;
2074 }
2075
2076 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2077                                                struct sk_buff *skb)
2078 {
2079         struct hci_ev_status *rp = data;
2080         __u8 *sent;
2081
2082         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2083
2084         if (rp->status)
2085                 return rp->status;
2086
2087         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2088         if (!sent)
2089                 return rp->status;
2090
2091         hci_dev_lock(hdev);
2092
2093         if (*sent)
2094                 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2095         else
2096                 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2097
2098         hci_dev_unlock(hdev);
2099
2100         return rp->status;
2101 }
2102
2103 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2104                                       struct sk_buff *skb)
2105 {
2106         struct hci_rp_le_read_max_data_len *rp = data;
2107
2108         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2109
2110         if (rp->status)
2111                 return rp->status;
2112
2113         hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2114         hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2115         hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2116         hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2117
2118         return rp->status;
2119 }
2120
2121 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2122                                          struct sk_buff *skb)
2123 {
2124         struct hci_cp_write_le_host_supported *sent;
2125         struct hci_ev_status *rp = data;
2126
2127         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2128
2129         if (rp->status)
2130                 return rp->status;
2131
2132         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2133         if (!sent)
2134                 return rp->status;
2135
2136         hci_dev_lock(hdev);
2137
2138         if (sent->le) {
2139                 hdev->features[1][0] |= LMP_HOST_LE;
2140                 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2141         } else {
2142                 hdev->features[1][0] &= ~LMP_HOST_LE;
2143                 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2144                 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2145         }
2146
2147         if (sent->simul)
2148                 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2149         else
2150                 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2151
2152         hci_dev_unlock(hdev);
2153
2154         return rp->status;
2155 }
2156
2157 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2158                                struct sk_buff *skb)
2159 {
2160         struct hci_cp_le_set_adv_param *cp;
2161         struct hci_ev_status *rp = data;
2162
2163         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2164
2165         if (rp->status)
2166                 return rp->status;
2167
2168         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2169         if (!cp)
2170                 return rp->status;
2171
2172         hci_dev_lock(hdev);
2173         hdev->adv_addr_type = cp->own_address_type;
2174         hci_dev_unlock(hdev);
2175
2176         return rp->status;
2177 }
2178
2179 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2180                                    struct sk_buff *skb)
2181 {
2182         struct hci_rp_le_set_ext_adv_params *rp = data;
2183         struct hci_cp_le_set_ext_adv_params *cp;
2184         struct adv_info *adv_instance;
2185
2186         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2187
2188         if (rp->status)
2189                 return rp->status;
2190
2191         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2192         if (!cp)
2193                 return rp->status;
2194
2195         hci_dev_lock(hdev);
2196         hdev->adv_addr_type = cp->own_addr_type;
2197         if (!cp->handle) {
2198                 /* Store in hdev for instance 0 */
2199                 hdev->adv_tx_power = rp->tx_power;
2200         } else {
2201                 adv_instance = hci_find_adv_instance(hdev, cp->handle);
2202                 if (adv_instance)
2203                         adv_instance->tx_power = rp->tx_power;
2204         }
2205         /* Update adv data as tx power is known now */
2206         hci_update_adv_data(hdev, cp->handle);
2207
2208         hci_dev_unlock(hdev);
2209
2210         return rp->status;
2211 }
2212
2213 #ifdef TIZEN_BT
2214 static u8 hci_cc_enable_rssi(struct hci_dev *hdev, void *data,
2215                              struct sk_buff *skb)
2216 {
2217         struct hci_cc_rsp_enable_rssi *rp = data;
2218
2219         BT_DBG("hci_cc_enable_rssi - %s status 0x%2.2x Event_LE_ext_Opcode 0x%2.2x",
2220                hdev->name, rp->status, rp->le_ext_opcode);
2221
2222         mgmt_enable_rssi_cc(hdev, rp, rp->status);
2223
2224         return rp->status;
2225 }
2226
2227 static u8 hci_cc_get_raw_rssi(struct hci_dev *hdev, void *data,
2228                               struct sk_buff *skb)
2229 {
2230         struct hci_cc_rp_get_raw_rssi *rp = data;
2231
2232         BT_DBG("hci_cc_get_raw_rssi- %s Get Raw Rssi Response[%2.2x %4.4x %2.2X]",
2233                hdev->name, rp->status, rp->conn_handle, rp->rssi_dbm);
2234
2235         mgmt_raw_rssi_response(hdev, rp, rp->status);
2236
2237         return rp->status;
2238 }
2239 #endif
2240
2241 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2242                            struct sk_buff *skb)
2243 {
2244         struct hci_rp_read_rssi *rp = data;
2245         struct hci_conn *conn;
2246
2247         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2248
2249         if (rp->status)
2250                 return rp->status;
2251
2252         hci_dev_lock(hdev);
2253
2254         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2255         if (conn)
2256                 conn->rssi = rp->rssi;
2257
2258         hci_dev_unlock(hdev);
2259
2260         return rp->status;
2261 }
2262
2263 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2264                                struct sk_buff *skb)
2265 {
2266         struct hci_cp_read_tx_power *sent;
2267         struct hci_rp_read_tx_power *rp = data;
2268         struct hci_conn *conn;
2269
2270         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2271
2272         if (rp->status)
2273                 return rp->status;
2274
2275         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2276         if (!sent)
2277                 return rp->status;
2278
2279         hci_dev_lock(hdev);
2280
2281         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2282         if (!conn)
2283                 goto unlock;
2284
2285         switch (sent->type) {
2286         case 0x00:
2287                 conn->tx_power = rp->tx_power;
2288                 break;
2289         case 0x01:
2290                 conn->max_tx_power = rp->tx_power;
2291                 break;
2292         }
2293
2294 unlock:
2295         hci_dev_unlock(hdev);
2296         return rp->status;
2297 }
2298
2299 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2300                                       struct sk_buff *skb)
2301 {
2302         struct hci_ev_status *rp = data;
2303         u8 *mode;
2304
2305         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2306
2307         if (rp->status)
2308                 return rp->status;
2309
2310         mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2311         if (mode)
2312                 hdev->ssp_debug_mode = *mode;
2313
2314         return rp->status;
2315 }
2316
2317 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2318 {
2319         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2320
2321         if (status) {
2322                 hci_conn_check_pending(hdev);
2323                 return;
2324         }
2325
2326         set_bit(HCI_INQUIRY, &hdev->flags);
2327 }
2328
2329 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2330 {
2331         struct hci_cp_create_conn *cp;
2332         struct hci_conn *conn;
2333
2334         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2335
2336         cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2337         if (!cp)
2338                 return;
2339
2340         hci_dev_lock(hdev);
2341
2342         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2343
2344         bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2345
2346         if (status) {
2347                 if (conn && conn->state == BT_CONNECT) {
2348                         if (status != 0x0c || conn->attempt > 2) {
2349                                 conn->state = BT_CLOSED;
2350                                 hci_connect_cfm(conn, status);
2351                                 hci_conn_del(conn);
2352                         } else
2353                                 conn->state = BT_CONNECT2;
2354                 }
2355         } else {
2356                 if (!conn) {
2357                         conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
2358                                             HCI_ROLE_MASTER);
2359                         if (!conn)
2360                                 bt_dev_err(hdev, "no memory for new connection");
2361                 }
2362         }
2363
2364         hci_dev_unlock(hdev);
2365 }
2366
2367 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2368 {
2369         struct hci_cp_add_sco *cp;
2370         struct hci_conn *acl, *sco;
2371         __u16 handle;
2372
2373         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2374
2375         if (!status)
2376                 return;
2377
2378         cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2379         if (!cp)
2380                 return;
2381
2382         handle = __le16_to_cpu(cp->handle);
2383
2384         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2385
2386         hci_dev_lock(hdev);
2387
2388         acl = hci_conn_hash_lookup_handle(hdev, handle);
2389         if (acl) {
2390                 sco = acl->link;
2391                 if (sco) {
2392                         sco->state = BT_CLOSED;
2393
2394                         hci_connect_cfm(sco, status);
2395                         hci_conn_del(sco);
2396                 }
2397         }
2398
2399         hci_dev_unlock(hdev);
2400 }
2401
2402 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2403 {
2404         struct hci_cp_auth_requested *cp;
2405         struct hci_conn *conn;
2406
2407         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2408
2409         if (!status)
2410                 return;
2411
2412         cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2413         if (!cp)
2414                 return;
2415
2416         hci_dev_lock(hdev);
2417
2418         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2419         if (conn) {
2420                 if (conn->state == BT_CONFIG) {
2421                         hci_connect_cfm(conn, status);
2422                         hci_conn_drop(conn);
2423                 }
2424         }
2425
2426         hci_dev_unlock(hdev);
2427 }
2428
2429 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2430 {
2431         struct hci_cp_set_conn_encrypt *cp;
2432         struct hci_conn *conn;
2433
2434         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2435
2436         if (!status)
2437                 return;
2438
2439         cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2440         if (!cp)
2441                 return;
2442
2443         hci_dev_lock(hdev);
2444
2445         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2446         if (conn) {
2447                 if (conn->state == BT_CONFIG) {
2448                         hci_connect_cfm(conn, status);
2449                         hci_conn_drop(conn);
2450                 }
2451         }
2452
2453         hci_dev_unlock(hdev);
2454 }
2455
2456 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2457                                     struct hci_conn *conn)
2458 {
2459         if (conn->state != BT_CONFIG || !conn->out)
2460                 return 0;
2461
2462         if (conn->pending_sec_level == BT_SECURITY_SDP)
2463                 return 0;
2464
2465         /* Only request authentication for SSP connections or non-SSP
2466          * devices with sec_level MEDIUM or HIGH or if MITM protection
2467          * is requested.
2468          */
2469         if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2470             conn->pending_sec_level != BT_SECURITY_FIPS &&
2471             conn->pending_sec_level != BT_SECURITY_HIGH &&
2472             conn->pending_sec_level != BT_SECURITY_MEDIUM)
2473                 return 0;
2474
2475         return 1;
2476 }
2477
2478 static int hci_resolve_name(struct hci_dev *hdev,
2479                                    struct inquiry_entry *e)
2480 {
2481         struct hci_cp_remote_name_req cp;
2482
2483         memset(&cp, 0, sizeof(cp));
2484
2485         bacpy(&cp.bdaddr, &e->data.bdaddr);
2486         cp.pscan_rep_mode = e->data.pscan_rep_mode;
2487         cp.pscan_mode = e->data.pscan_mode;
2488         cp.clock_offset = e->data.clock_offset;
2489
2490         return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2491 }
2492
2493 static bool hci_resolve_next_name(struct hci_dev *hdev)
2494 {
2495         struct discovery_state *discov = &hdev->discovery;
2496         struct inquiry_entry *e;
2497
2498         if (list_empty(&discov->resolve))
2499                 return false;
2500
2501         /* We should stop if we already spent too much time resolving names. */
2502         if (time_after(jiffies, discov->name_resolve_timeout)) {
2503                 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2504                 return false;
2505         }
2506
2507         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2508         if (!e)
2509                 return false;
2510
2511         if (hci_resolve_name(hdev, e) == 0) {
2512                 e->name_state = NAME_PENDING;
2513                 return true;
2514         }
2515
2516         return false;
2517 }
2518
2519 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2520                                    bdaddr_t *bdaddr, u8 *name, u8 name_len)
2521 {
2522         struct discovery_state *discov = &hdev->discovery;
2523         struct inquiry_entry *e;
2524
2525 #ifdef TIZEN_BT
2526         /* Update the mgmt connected state if necessary. Be careful with
2527          * conn objects that exist but are not (yet) connected however.
2528          * Only those in BT_CONFIG or BT_CONNECTED states can be
2529          * considered connected.
2530          */
2531         if (conn &&
2532             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) {
2533                 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2534                         mgmt_device_connected(hdev, conn, 0, name, name_len);
2535                 else
2536                         mgmt_device_name_update(hdev, bdaddr, name, name_len);
2537         }
2538 #else
2539         if (conn &&
2540             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2541             !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2542                 mgmt_device_connected(hdev, conn, name, name_len);
2543 #endif
2544
2545         if (discov->state == DISCOVERY_STOPPED)
2546                 return;
2547
2548         if (discov->state == DISCOVERY_STOPPING)
2549                 goto discov_complete;
2550
2551         if (discov->state != DISCOVERY_RESOLVING)
2552                 return;
2553
2554         e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2555         /* If the device was not found in a list of found devices names of which
2556          * are pending. there is no need to continue resolving a next name as it
2557          * will be done upon receiving another Remote Name Request Complete
2558          * Event */
2559         if (!e)
2560                 return;
2561
2562         list_del(&e->list);
2563
2564         e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2565         mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2566                          name, name_len);
2567
2568         if (hci_resolve_next_name(hdev))
2569                 return;
2570
2571 discov_complete:
2572         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2573 }
2574
2575 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2576 {
2577         struct hci_cp_remote_name_req *cp;
2578         struct hci_conn *conn;
2579
2580         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2581
2582         /* If successful wait for the name req complete event before
2583          * checking for the need to do authentication */
2584         if (!status)
2585                 return;
2586
2587         cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2588         if (!cp)
2589                 return;
2590
2591         hci_dev_lock(hdev);
2592
2593         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2594
2595         if (hci_dev_test_flag(hdev, HCI_MGMT))
2596                 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2597
2598         if (!conn)
2599                 goto unlock;
2600
2601         if (!hci_outgoing_auth_needed(hdev, conn))
2602                 goto unlock;
2603
2604         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2605                 struct hci_cp_auth_requested auth_cp;
2606
2607                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2608
2609                 auth_cp.handle = __cpu_to_le16(conn->handle);
2610                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2611                              sizeof(auth_cp), &auth_cp);
2612         }
2613
2614 unlock:
2615         hci_dev_unlock(hdev);
2616 }
2617
2618 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2619 {
2620         struct hci_cp_read_remote_features *cp;
2621         struct hci_conn *conn;
2622
2623         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2624
2625         if (!status)
2626                 return;
2627
2628         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2629         if (!cp)
2630                 return;
2631
2632         hci_dev_lock(hdev);
2633
2634         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2635         if (conn) {
2636                 if (conn->state == BT_CONFIG) {
2637                         hci_connect_cfm(conn, status);
2638                         hci_conn_drop(conn);
2639                 }
2640         }
2641
2642         hci_dev_unlock(hdev);
2643 }
2644
2645 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2646 {
2647         struct hci_cp_read_remote_ext_features *cp;
2648         struct hci_conn *conn;
2649
2650         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2651
2652         if (!status)
2653                 return;
2654
2655         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2656         if (!cp)
2657                 return;
2658
2659         hci_dev_lock(hdev);
2660
2661         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2662         if (conn) {
2663                 if (conn->state == BT_CONFIG) {
2664                         hci_connect_cfm(conn, status);
2665                         hci_conn_drop(conn);
2666                 }
2667         }
2668
2669         hci_dev_unlock(hdev);
2670 }
2671
2672 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2673 {
2674         struct hci_cp_setup_sync_conn *cp;
2675         struct hci_conn *acl, *sco;
2676         __u16 handle;
2677
2678         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2679
2680         if (!status)
2681                 return;
2682
2683         cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2684         if (!cp)
2685                 return;
2686
2687         handle = __le16_to_cpu(cp->handle);
2688
2689         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2690
2691         hci_dev_lock(hdev);
2692
2693         acl = hci_conn_hash_lookup_handle(hdev, handle);
2694         if (acl) {
2695                 sco = acl->link;
2696                 if (sco) {
2697                         sco->state = BT_CLOSED;
2698
2699                         hci_connect_cfm(sco, status);
2700                         hci_conn_del(sco);
2701                 }
2702         }
2703
2704         hci_dev_unlock(hdev);
2705 }
2706
2707 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2708 {
2709         struct hci_cp_enhanced_setup_sync_conn *cp;
2710         struct hci_conn *acl, *sco;
2711         __u16 handle;
2712
2713         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2714
2715         if (!status)
2716                 return;
2717
2718         cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2719         if (!cp)
2720                 return;
2721
2722         handle = __le16_to_cpu(cp->handle);
2723
2724         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2725
2726         hci_dev_lock(hdev);
2727
2728         acl = hci_conn_hash_lookup_handle(hdev, handle);
2729         if (acl) {
2730                 sco = acl->link;
2731                 if (sco) {
2732                         sco->state = BT_CLOSED;
2733
2734                         hci_connect_cfm(sco, status);
2735                         hci_conn_del(sco);
2736                 }
2737         }
2738
2739         hci_dev_unlock(hdev);
2740 }
2741
2742 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2743 {
2744         struct hci_cp_sniff_mode *cp;
2745         struct hci_conn *conn;
2746
2747         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2748
2749         if (!status)
2750                 return;
2751
2752         cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2753         if (!cp)
2754                 return;
2755
2756         hci_dev_lock(hdev);
2757
2758         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2759         if (conn) {
2760                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2761
2762                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2763                         hci_sco_setup(conn, status);
2764         }
2765
2766         hci_dev_unlock(hdev);
2767 }
2768
2769 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2770 {
2771         struct hci_cp_exit_sniff_mode *cp;
2772         struct hci_conn *conn;
2773
2774         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2775
2776         if (!status)
2777                 return;
2778
2779         cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2780         if (!cp)
2781                 return;
2782
2783         hci_dev_lock(hdev);
2784
2785         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2786         if (conn) {
2787                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2788
2789                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2790                         hci_sco_setup(conn, status);
2791         }
2792
2793         hci_dev_unlock(hdev);
2794 }
2795
2796 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2797 {
2798         struct hci_cp_disconnect *cp;
2799         struct hci_conn_params *params;
2800         struct hci_conn *conn;
2801         bool mgmt_conn;
2802
2803         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2804
2805         /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2806          * otherwise cleanup the connection immediately.
2807          */
2808         if (!status && !hdev->suspended)
2809                 return;
2810
2811         cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2812         if (!cp)
2813                 return;
2814
2815         hci_dev_lock(hdev);
2816
2817         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2818         if (!conn)
2819                 goto unlock;
2820
2821         if (status) {
2822                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2823                                        conn->dst_type, status);
2824
2825                 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2826                         hdev->cur_adv_instance = conn->adv_instance;
2827                         hci_enable_advertising(hdev);
2828                 }
2829
2830                 goto done;
2831         }
2832
2833         mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2834
2835         if (conn->type == ACL_LINK) {
2836                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2837                         hci_remove_link_key(hdev, &conn->dst);
2838         }
2839
2840         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2841         if (params) {
2842                 switch (params->auto_connect) {
2843                 case HCI_AUTO_CONN_LINK_LOSS:
2844                         if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2845                                 break;
2846                         fallthrough;
2847
2848                 case HCI_AUTO_CONN_DIRECT:
2849                 case HCI_AUTO_CONN_ALWAYS:
2850                         list_del_init(&params->action);
2851                         list_add(&params->action, &hdev->pend_le_conns);
2852                         break;
2853
2854                 default:
2855                         break;
2856                 }
2857         }
2858
2859         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2860                                  cp->reason, mgmt_conn);
2861
2862         hci_disconn_cfm(conn, cp->reason);
2863
2864 done:
2865         /* If the disconnection failed for any reason, the upper layer
2866          * does not retry to disconnect in current implementation.
2867          * Hence, we need to do some basic cleanup here and re-enable
2868          * advertising if necessary.
2869          */
2870         hci_conn_del(conn);
2871 unlock:
2872         hci_dev_unlock(hdev);
2873 }
2874
2875 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
2876 {
2877         /* When using controller based address resolution, then the new
2878          * address types 0x02 and 0x03 are used. These types need to be
2879          * converted back into either public address or random address type
2880          */
2881         switch (type) {
2882         case ADDR_LE_DEV_PUBLIC_RESOLVED:
2883                 if (resolved)
2884                         *resolved = true;
2885                 return ADDR_LE_DEV_PUBLIC;
2886         case ADDR_LE_DEV_RANDOM_RESOLVED:
2887                 if (resolved)
2888                         *resolved = true;
2889                 return ADDR_LE_DEV_RANDOM;
2890         }
2891
2892         if (resolved)
2893                 *resolved = false;
2894         return type;
2895 }
2896
2897 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2898                               u8 peer_addr_type, u8 own_address_type,
2899                               u8 filter_policy)
2900 {
2901         struct hci_conn *conn;
2902
2903         conn = hci_conn_hash_lookup_le(hdev, peer_addr,
2904                                        peer_addr_type);
2905         if (!conn)
2906                 return;
2907
2908         own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
2909
2910         /* Store the initiator and responder address information which
2911          * is needed for SMP. These values will not change during the
2912          * lifetime of the connection.
2913          */
2914         conn->init_addr_type = own_address_type;
2915         if (own_address_type == ADDR_LE_DEV_RANDOM)
2916                 bacpy(&conn->init_addr, &hdev->random_addr);
2917         else
2918                 bacpy(&conn->init_addr, &hdev->bdaddr);
2919
2920         conn->resp_addr_type = peer_addr_type;
2921         bacpy(&conn->resp_addr, peer_addr);
2922 }
2923
2924 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2925 {
2926         struct hci_cp_le_create_conn *cp;
2927
2928         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2929
2930         /* All connection failure handling is taken care of by the
2931          * hci_conn_failed function which is triggered by the HCI
2932          * request completion callbacks used for connecting.
2933          */
2934         if (status)
2935                 return;
2936
2937         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
2938         if (!cp)
2939                 return;
2940
2941         hci_dev_lock(hdev);
2942
2943         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2944                           cp->own_address_type, cp->filter_policy);
2945
2946         hci_dev_unlock(hdev);
2947 }
2948
2949 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
2950 {
2951         struct hci_cp_le_ext_create_conn *cp;
2952
2953         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2954
2955         /* All connection failure handling is taken care of by the
2956          * hci_conn_failed function which is triggered by the HCI
2957          * request completion callbacks used for connecting.
2958          */
2959         if (status)
2960                 return;
2961
2962         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
2963         if (!cp)
2964                 return;
2965
2966         hci_dev_lock(hdev);
2967
2968         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2969                           cp->own_addr_type, cp->filter_policy);
2970
2971         hci_dev_unlock(hdev);
2972 }
2973
2974 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
2975 {
2976         struct hci_cp_le_read_remote_features *cp;
2977         struct hci_conn *conn;
2978
2979         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2980
2981         if (!status)
2982                 return;
2983
2984         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
2985         if (!cp)
2986                 return;
2987
2988         hci_dev_lock(hdev);
2989
2990         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2991         if (conn) {
2992                 if (conn->state == BT_CONFIG) {
2993                         hci_connect_cfm(conn, status);
2994                         hci_conn_drop(conn);
2995                 }
2996         }
2997
2998         hci_dev_unlock(hdev);
2999 }
3000
3001 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
3002 {
3003         struct hci_cp_le_start_enc *cp;
3004         struct hci_conn *conn;
3005
3006         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3007
3008         if (!status)
3009                 return;
3010
3011         hci_dev_lock(hdev);
3012
3013         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
3014         if (!cp)
3015                 goto unlock;
3016
3017         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3018         if (!conn)
3019                 goto unlock;
3020
3021         if (conn->state != BT_CONNECTED)
3022                 goto unlock;
3023
3024         hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3025         hci_conn_drop(conn);
3026
3027 unlock:
3028         hci_dev_unlock(hdev);
3029 }
3030
3031 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
3032 {
3033         struct hci_cp_switch_role *cp;
3034         struct hci_conn *conn;
3035
3036         BT_DBG("%s status 0x%2.2x", hdev->name, status);
3037
3038         if (!status)
3039                 return;
3040
3041         cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3042         if (!cp)
3043                 return;
3044
3045         hci_dev_lock(hdev);
3046
3047         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3048         if (conn)
3049                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3050
3051         hci_dev_unlock(hdev);
3052 }
3053
3054 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3055                                      struct sk_buff *skb)
3056 {
3057         struct hci_ev_status *ev = data;
3058         struct discovery_state *discov = &hdev->discovery;
3059         struct inquiry_entry *e;
3060
3061         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3062
3063         hci_conn_check_pending(hdev);
3064
3065         if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3066                 return;
3067
3068         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3069         wake_up_bit(&hdev->flags, HCI_INQUIRY);
3070
3071         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3072                 return;
3073
3074         hci_dev_lock(hdev);
3075
3076         if (discov->state != DISCOVERY_FINDING)
3077                 goto unlock;
3078
3079         if (list_empty(&discov->resolve)) {
3080                 /* When BR/EDR inquiry is active and no LE scanning is in
3081                  * progress, then change discovery state to indicate completion.
3082                  *
3083                  * When running LE scanning and BR/EDR inquiry simultaneously
3084                  * and the LE scan already finished, then change the discovery
3085                  * state to indicate completion.
3086                  */
3087                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3088                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3089                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3090                 goto unlock;
3091         }
3092
3093         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3094         if (e && hci_resolve_name(hdev, e) == 0) {
3095                 e->name_state = NAME_PENDING;
3096                 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3097                 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3098         } else {
3099                 /* When BR/EDR inquiry is active and no LE scanning is in
3100                  * progress, then change discovery state to indicate completion.
3101                  *
3102                  * When running LE scanning and BR/EDR inquiry simultaneously
3103                  * and the LE scan already finished, then change the discovery
3104                  * state to indicate completion.
3105                  */
3106                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3107                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3108                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3109         }
3110
3111 unlock:
3112         hci_dev_unlock(hdev);
3113 }
3114
3115 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3116                                    struct sk_buff *skb)
3117 {
3118         struct hci_ev_inquiry_result *ev = edata;
3119         struct inquiry_data data;
3120         int i;
3121
3122         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3123                              flex_array_size(ev, info, ev->num)))
3124                 return;
3125
3126         bt_dev_dbg(hdev, "num %d", ev->num);
3127
3128         if (!ev->num)
3129                 return;
3130
3131         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3132                 return;
3133
3134         hci_dev_lock(hdev);
3135
3136         for (i = 0; i < ev->num; i++) {
3137                 struct inquiry_info *info = &ev->info[i];
3138                 u32 flags;
3139
3140                 bacpy(&data.bdaddr, &info->bdaddr);
3141                 data.pscan_rep_mode     = info->pscan_rep_mode;
3142                 data.pscan_period_mode  = info->pscan_period_mode;
3143                 data.pscan_mode         = info->pscan_mode;
3144                 memcpy(data.dev_class, info->dev_class, 3);
3145                 data.clock_offset       = info->clock_offset;
3146                 data.rssi               = HCI_RSSI_INVALID;
3147                 data.ssp_mode           = 0x00;
3148
3149                 flags = hci_inquiry_cache_update(hdev, &data, false);
3150
3151                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3152                                   info->dev_class, HCI_RSSI_INVALID,
3153                                   flags, NULL, 0, NULL, 0, 0);
3154         }
3155
3156         hci_dev_unlock(hdev);
3157 }
3158
3159 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3160                                   struct sk_buff *skb)
3161 {
3162         struct hci_ev_conn_complete *ev = data;
3163         struct hci_conn *conn;
3164         u8 status = ev->status;
3165
3166         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3167
3168         hci_dev_lock(hdev);
3169
3170         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3171         if (!conn) {
3172                 /* In case of error status and there is no connection pending
3173                  * just unlock as there is nothing to cleanup.
3174                  */
3175                 if (ev->status)
3176                         goto unlock;
3177
3178                 /* Connection may not exist if auto-connected. Check the bredr
3179                  * allowlist to see if this device is allowed to auto connect.
3180                  * If link is an ACL type, create a connection class
3181                  * automatically.
3182                  *
3183                  * Auto-connect will only occur if the event filter is
3184                  * programmed with a given address. Right now, event filter is
3185                  * only used during suspend.
3186                  */
3187                 if (ev->link_type == ACL_LINK &&
3188                     hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3189                                                       &ev->bdaddr,
3190                                                       BDADDR_BREDR)) {
3191                         conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3192                                             HCI_ROLE_SLAVE);
3193                         if (!conn) {
3194                                 bt_dev_err(hdev, "no memory for new conn");
3195                                 goto unlock;
3196                         }
3197                 } else {
3198                         if (ev->link_type != SCO_LINK)
3199                                 goto unlock;
3200
3201                         conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3202                                                        &ev->bdaddr);
3203                         if (!conn)
3204                                 goto unlock;
3205
3206                         conn->type = SCO_LINK;
3207                 }
3208         }
3209
3210         /* The HCI_Connection_Complete event is only sent once per connection.
3211          * Processing it more than once per connection can corrupt kernel memory.
3212          *
3213          * As the connection handle is set here for the first time, it indicates
3214          * whether the connection is already set up.
3215          */
3216         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
3217                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3218                 goto unlock;
3219         }
3220
3221         if (!status) {
3222                 conn->handle = __le16_to_cpu(ev->handle);
3223                 if (conn->handle > HCI_CONN_HANDLE_MAX) {
3224                         bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
3225                                    conn->handle, HCI_CONN_HANDLE_MAX);
3226                         status = HCI_ERROR_INVALID_PARAMETERS;
3227                         goto done;
3228                 }
3229
3230                 if (conn->type == ACL_LINK) {
3231                         conn->state = BT_CONFIG;
3232                         hci_conn_hold(conn);
3233
3234                         if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3235                             !hci_find_link_key(hdev, &ev->bdaddr))
3236                                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3237                         else
3238                                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3239                 } else
3240                         conn->state = BT_CONNECTED;
3241
3242                 hci_debugfs_create_conn(conn);
3243                 hci_conn_add_sysfs(conn);
3244
3245                 if (test_bit(HCI_AUTH, &hdev->flags))
3246                         set_bit(HCI_CONN_AUTH, &conn->flags);
3247
3248                 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3249                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3250
3251                 /* Get remote features */
3252                 if (conn->type == ACL_LINK) {
3253                         struct hci_cp_read_remote_features cp;
3254                         cp.handle = ev->handle;
3255                         hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3256                                      sizeof(cp), &cp);
3257
3258                         hci_update_scan(hdev);
3259                 }
3260
3261                 /* Set packet type for incoming connection */
3262                 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3263                         struct hci_cp_change_conn_ptype cp;
3264                         cp.handle = ev->handle;
3265                         cp.pkt_type = cpu_to_le16(conn->pkt_type);
3266                         hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3267                                      &cp);
3268                 }
3269         }
3270
3271         if (conn->type == ACL_LINK)
3272                 hci_sco_setup(conn, ev->status);
3273
3274 done:
3275         if (status) {
3276                 hci_conn_failed(conn, status);
3277         } else if (ev->link_type == SCO_LINK) {
3278                 switch (conn->setting & SCO_AIRMODE_MASK) {
3279                 case SCO_AIRMODE_CVSD:
3280                         if (hdev->notify)
3281                                 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3282                         break;
3283                 }
3284
3285                 hci_connect_cfm(conn, status);
3286         }
3287
3288 unlock:
3289         hci_dev_unlock(hdev);
3290
3291         hci_conn_check_pending(hdev);
3292 }
3293
3294 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3295 {
3296         struct hci_cp_reject_conn_req cp;
3297
3298         bacpy(&cp.bdaddr, bdaddr);
3299         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3300         hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3301 }
3302
3303 static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3304                                  struct sk_buff *skb)
3305 {
3306         struct hci_ev_conn_request *ev = data;
3307         int mask = hdev->link_mode;
3308         struct inquiry_entry *ie;
3309         struct hci_conn *conn;
3310         __u8 flags = 0;
3311
3312         bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3313
3314         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3315                                       &flags);
3316
3317         if (!(mask & HCI_LM_ACCEPT)) {
3318                 hci_reject_conn(hdev, &ev->bdaddr);
3319                 return;
3320         }
3321
3322         hci_dev_lock(hdev);
3323
3324         if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3325                                    BDADDR_BREDR)) {
3326                 hci_reject_conn(hdev, &ev->bdaddr);
3327                 goto unlock;
3328         }
3329
3330         /* Require HCI_CONNECTABLE or an accept list entry to accept the
3331          * connection. These features are only touched through mgmt so
3332          * only do the checks if HCI_MGMT is set.
3333          */
3334         if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3335             !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3336             !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3337                                                BDADDR_BREDR)) {
3338                 hci_reject_conn(hdev, &ev->bdaddr);
3339                 goto unlock;
3340         }
3341
3342         /* Connection accepted */
3343
3344         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3345         if (ie)
3346                 memcpy(ie->data.dev_class, ev->dev_class, 3);
3347
3348         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3349                         &ev->bdaddr);
3350         if (!conn) {
3351                 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3352                                     HCI_ROLE_SLAVE);
3353                 if (!conn) {
3354                         bt_dev_err(hdev, "no memory for new connection");
3355                         goto unlock;
3356                 }
3357         }
3358
3359         memcpy(conn->dev_class, ev->dev_class, 3);
3360
3361         hci_dev_unlock(hdev);
3362
3363         if (ev->link_type == ACL_LINK ||
3364             (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3365                 struct hci_cp_accept_conn_req cp;
3366                 conn->state = BT_CONNECT;
3367
3368                 bacpy(&cp.bdaddr, &ev->bdaddr);
3369
3370                 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3371                         cp.role = 0x00; /* Become central */
3372                 else
3373                         cp.role = 0x01; /* Remain peripheral */
3374
3375                 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3376         } else if (!(flags & HCI_PROTO_DEFER)) {
3377                 struct hci_cp_accept_sync_conn_req cp;
3378                 conn->state = BT_CONNECT;
3379
3380                 bacpy(&cp.bdaddr, &ev->bdaddr);
3381                 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3382
3383                 cp.tx_bandwidth   = cpu_to_le32(0x00001f40);
3384                 cp.rx_bandwidth   = cpu_to_le32(0x00001f40);
3385                 cp.max_latency    = cpu_to_le16(0xffff);
3386                 cp.content_format = cpu_to_le16(hdev->voice_setting);
3387                 cp.retrans_effort = 0xff;
3388
3389                 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3390                              &cp);
3391         } else {
3392                 conn->state = BT_CONNECT2;
3393                 hci_connect_cfm(conn, 0);
3394         }
3395
3396         return;
3397 unlock:
3398         hci_dev_unlock(hdev);
3399 }
3400
3401 static u8 hci_to_mgmt_reason(u8 err)
3402 {
3403         switch (err) {
3404         case HCI_ERROR_CONNECTION_TIMEOUT:
3405                 return MGMT_DEV_DISCONN_TIMEOUT;
3406         case HCI_ERROR_REMOTE_USER_TERM:
3407         case HCI_ERROR_REMOTE_LOW_RESOURCES:
3408         case HCI_ERROR_REMOTE_POWER_OFF:
3409                 return MGMT_DEV_DISCONN_REMOTE;
3410         case HCI_ERROR_LOCAL_HOST_TERM:
3411                 return MGMT_DEV_DISCONN_LOCAL_HOST;
3412         default:
3413                 return MGMT_DEV_DISCONN_UNKNOWN;
3414         }
3415 }
3416
3417 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3418                                      struct sk_buff *skb)
3419 {
3420         struct hci_ev_disconn_complete *ev = data;
3421         u8 reason;
3422         struct hci_conn_params *params;
3423         struct hci_conn *conn;
3424         bool mgmt_connected;
3425
3426         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3427
3428         hci_dev_lock(hdev);
3429
3430         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3431         if (!conn)
3432                 goto unlock;
3433
3434         if (ev->status) {
3435                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3436                                        conn->dst_type, ev->status);
3437                 goto unlock;
3438         }
3439
3440         conn->state = BT_CLOSED;
3441
3442         mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3443
3444         if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3445                 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3446         else
3447                 reason = hci_to_mgmt_reason(ev->reason);
3448
3449         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3450                                 reason, mgmt_connected);
3451
3452         if (conn->type == ACL_LINK) {
3453                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3454                         hci_remove_link_key(hdev, &conn->dst);
3455
3456                 hci_update_scan(hdev);
3457         }
3458
3459         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3460         if (params) {
3461                 switch (params->auto_connect) {
3462                 case HCI_AUTO_CONN_LINK_LOSS:
3463                         if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3464                                 break;
3465                         fallthrough;
3466
3467                 case HCI_AUTO_CONN_DIRECT:
3468                 case HCI_AUTO_CONN_ALWAYS:
3469                         list_del_init(&params->action);
3470                         list_add(&params->action, &hdev->pend_le_conns);
3471                         hci_update_passive_scan(hdev);
3472                         break;
3473
3474                 default:
3475                         break;
3476                 }
3477         }
3478
3479         hci_disconn_cfm(conn, ev->reason);
3480
3481         /* Re-enable advertising if necessary, since it might
3482          * have been disabled by the connection. From the
3483          * HCI_LE_Set_Advertise_Enable command description in
3484          * the core specification (v4.0):
3485          * "The Controller shall continue advertising until the Host
3486          * issues an LE_Set_Advertise_Enable command with
3487          * Advertising_Enable set to 0x00 (Advertising is disabled)
3488          * or until a connection is created or until the Advertising
3489          * is timed out due to Directed Advertising."
3490          */
3491         if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3492                 hdev->cur_adv_instance = conn->adv_instance;
3493                 hci_enable_advertising(hdev);
3494         }
3495
3496         hci_conn_del(conn);
3497
3498 unlock:
3499         hci_dev_unlock(hdev);
3500 }
3501
3502 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3503                                   struct sk_buff *skb)
3504 {
3505         struct hci_ev_auth_complete *ev = data;
3506         struct hci_conn *conn;
3507
3508         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3509
3510         hci_dev_lock(hdev);
3511
3512         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3513         if (!conn)
3514                 goto unlock;
3515
3516         if (!ev->status) {
3517                 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3518
3519                 if (!hci_conn_ssp_enabled(conn) &&
3520                     test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
3521                         bt_dev_info(hdev, "re-auth of legacy device is not possible.");
3522                 } else {
3523                         set_bit(HCI_CONN_AUTH, &conn->flags);
3524                         conn->sec_level = conn->pending_sec_level;
3525                 }
3526         } else {
3527                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3528                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3529
3530                 mgmt_auth_failed(conn, ev->status);
3531         }
3532
3533         clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3534         clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
3535
3536         if (conn->state == BT_CONFIG) {
3537                 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3538                         struct hci_cp_set_conn_encrypt cp;
3539                         cp.handle  = ev->handle;
3540                         cp.encrypt = 0x01;
3541                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3542                                      &cp);
3543                 } else {
3544                         conn->state = BT_CONNECTED;
3545                         hci_connect_cfm(conn, ev->status);
3546                         hci_conn_drop(conn);
3547                 }
3548         } else {
3549                 hci_auth_cfm(conn, ev->status);
3550
3551                 hci_conn_hold(conn);
3552                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3553                 hci_conn_drop(conn);
3554         }
3555
3556         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3557                 if (!ev->status) {
3558                         struct hci_cp_set_conn_encrypt cp;
3559                         cp.handle  = ev->handle;
3560                         cp.encrypt = 0x01;
3561                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3562                                      &cp);
3563                 } else {
3564                         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3565                         hci_encrypt_cfm(conn, ev->status);
3566                 }
3567         }
3568
3569 unlock:
3570         hci_dev_unlock(hdev);
3571 }
3572
3573 static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3574                                 struct sk_buff *skb)
3575 {
3576         struct hci_ev_remote_name *ev = data;
3577         struct hci_conn *conn;
3578
3579         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3580
3581         hci_conn_check_pending(hdev);
3582
3583         hci_dev_lock(hdev);
3584
3585         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3586
3587         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3588                 goto check_auth;
3589
3590         if (ev->status == 0)
3591                 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3592                                        strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3593         else
3594                 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3595
3596 check_auth:
3597         if (!conn)
3598                 goto unlock;
3599
3600         if (!hci_outgoing_auth_needed(hdev, conn))
3601                 goto unlock;
3602
3603         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3604                 struct hci_cp_auth_requested cp;
3605
3606                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3607
3608                 cp.handle = __cpu_to_le16(conn->handle);
3609                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3610         }
3611
3612 unlock:
3613         hci_dev_unlock(hdev);
3614 }
3615
3616 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3617                                    struct sk_buff *skb)
3618 {
3619         struct hci_ev_encrypt_change *ev = data;
3620         struct hci_conn *conn;
3621
3622         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3623
3624         hci_dev_lock(hdev);
3625
3626         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3627         if (!conn)
3628                 goto unlock;
3629
3630         if (!ev->status) {
3631                 if (ev->encrypt) {
3632                         /* Encryption implies authentication */
3633                         set_bit(HCI_CONN_AUTH, &conn->flags);
3634                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3635                         conn->sec_level = conn->pending_sec_level;
3636
3637                         /* P-256 authentication key implies FIPS */
3638                         if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3639                                 set_bit(HCI_CONN_FIPS, &conn->flags);
3640
3641                         if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3642                             conn->type == LE_LINK)
3643                                 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3644                 } else {
3645                         clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3646                         clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3647                 }
3648         }
3649
3650         /* We should disregard the current RPA and generate a new one
3651          * whenever the encryption procedure fails.
3652          */
3653         if (ev->status && conn->type == LE_LINK) {
3654                 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3655                 hci_adv_instances_set_rpa_expired(hdev, true);
3656         }
3657
3658         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3659
3660         /* Check link security requirements are met */
3661         if (!hci_conn_check_link_mode(conn))
3662                 ev->status = HCI_ERROR_AUTH_FAILURE;
3663
3664         if (ev->status && conn->state == BT_CONNECTED) {
3665                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3666                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3667
3668                 /* Notify upper layers so they can cleanup before
3669                  * disconnecting.
3670                  */
3671                 hci_encrypt_cfm(conn, ev->status);
3672                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3673                 hci_conn_drop(conn);
3674                 goto unlock;
3675         }
3676
3677         /* Try reading the encryption key size for encrypted ACL links */
3678         if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3679                 struct hci_cp_read_enc_key_size cp;
3680
3681                 /* Only send HCI_Read_Encryption_Key_Size if the
3682                  * controller really supports it. If it doesn't, assume
3683                  * the default size (16).
3684                  */
3685                 if (!(hdev->commands[20] & 0x10)) {
3686                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3687                         goto notify;
3688                 }
3689
3690                 cp.handle = cpu_to_le16(conn->handle);
3691                 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3692                                  sizeof(cp), &cp)) {
3693                         bt_dev_err(hdev, "sending read key size failed");
3694                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3695                         goto notify;
3696                 }
3697
3698                 goto unlock;
3699         }
3700
3701         /* Set the default Authenticated Payload Timeout after
3702          * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3703          * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3704          * sent when the link is active and Encryption is enabled, the conn
3705          * type can be either LE or ACL and controller must support LMP Ping.
3706          * Ensure for AES-CCM encryption as well.
3707          */
3708         if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3709             test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3710             ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3711              (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3712                 struct hci_cp_write_auth_payload_to cp;
3713
3714                 cp.handle = cpu_to_le16(conn->handle);
3715                 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3716                 hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3717                              sizeof(cp), &cp);
3718         }
3719
3720 notify:
3721         hci_encrypt_cfm(conn, ev->status);
3722
3723 unlock:
3724         hci_dev_unlock(hdev);
3725 }
3726
3727 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3728                                              struct sk_buff *skb)
3729 {
3730         struct hci_ev_change_link_key_complete *ev = data;
3731         struct hci_conn *conn;
3732
3733         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3734
3735         hci_dev_lock(hdev);
3736
3737         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3738         if (conn) {
3739                 if (!ev->status)
3740                         set_bit(HCI_CONN_SECURE, &conn->flags);
3741
3742                 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3743
3744                 hci_key_change_cfm(conn, ev->status);
3745         }
3746
3747         hci_dev_unlock(hdev);
3748 }
3749
3750 static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3751                                     struct sk_buff *skb)
3752 {
3753         struct hci_ev_remote_features *ev = data;
3754         struct hci_conn *conn;
3755
3756         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3757
3758         hci_dev_lock(hdev);
3759
3760         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3761         if (!conn)
3762                 goto unlock;
3763
3764         if (!ev->status)
3765                 memcpy(conn->features[0], ev->features, 8);
3766
3767         if (conn->state != BT_CONFIG)
3768                 goto unlock;
3769
3770         if (!ev->status && lmp_ext_feat_capable(hdev) &&
3771             lmp_ext_feat_capable(conn)) {
3772                 struct hci_cp_read_remote_ext_features cp;
3773                 cp.handle = ev->handle;
3774                 cp.page = 0x01;
3775                 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3776                              sizeof(cp), &cp);
3777                 goto unlock;
3778         }
3779
3780         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3781                 struct hci_cp_remote_name_req cp;
3782                 memset(&cp, 0, sizeof(cp));
3783                 bacpy(&cp.bdaddr, &conn->dst);
3784                 cp.pscan_rep_mode = 0x02;
3785                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3786         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3787                 mgmt_device_connected(hdev, conn, NULL, 0);
3788
3789         if (!hci_outgoing_auth_needed(hdev, conn)) {
3790                 conn->state = BT_CONNECTED;
3791                 hci_connect_cfm(conn, ev->status);
3792                 hci_conn_drop(conn);
3793         }
3794
3795 unlock:
3796         hci_dev_unlock(hdev);
3797 }
3798
3799 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3800 {
3801         cancel_delayed_work(&hdev->cmd_timer);
3802
3803         rcu_read_lock();
3804         if (!test_bit(HCI_RESET, &hdev->flags)) {
3805                 if (ncmd) {
3806                         cancel_delayed_work(&hdev->ncmd_timer);
3807                         atomic_set(&hdev->cmd_cnt, 1);
3808                 } else {
3809                         if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3810                                 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3811                                                    HCI_NCMD_TIMEOUT);
3812                 }
3813         }
3814         rcu_read_unlock();
3815 }
3816
3817 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3818                                         struct sk_buff *skb)
3819 {
3820         struct hci_rp_le_read_buffer_size_v2 *rp = data;
3821
3822         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3823
3824         if (rp->status)
3825                 return rp->status;
3826
3827         hdev->le_mtu   = __le16_to_cpu(rp->acl_mtu);
3828         hdev->le_pkts  = rp->acl_max_pkt;
3829         hdev->iso_mtu  = __le16_to_cpu(rp->iso_mtu);
3830         hdev->iso_pkts = rp->iso_max_pkt;
3831
3832         hdev->le_cnt  = hdev->le_pkts;
3833         hdev->iso_cnt = hdev->iso_pkts;
3834
3835         BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3836                hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3837
3838         return rp->status;
3839 }
3840
3841 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3842                                    struct sk_buff *skb)
3843 {
3844         struct hci_rp_le_set_cig_params *rp = data;
3845         struct hci_conn *conn;
3846         int i = 0;
3847
3848         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3849
3850         hci_dev_lock(hdev);
3851
3852         if (rp->status) {
3853                 while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) {
3854                         conn->state = BT_CLOSED;
3855                         hci_connect_cfm(conn, rp->status);
3856                         hci_conn_del(conn);
3857                 }
3858                 goto unlock;
3859         }
3860
3861         rcu_read_lock();
3862
3863         list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
3864                 if (conn->type != ISO_LINK || conn->iso_qos.cig != rp->cig_id ||
3865                     conn->state == BT_CONNECTED)
3866                         continue;
3867
3868                 conn->handle = __le16_to_cpu(rp->handle[i++]);
3869
3870                 bt_dev_dbg(hdev, "%p handle 0x%4.4x link %p", conn,
3871                            conn->handle, conn->link);
3872
3873                 /* Create CIS if LE is already connected */
3874                 if (conn->link && conn->link->state == BT_CONNECTED) {
3875                         rcu_read_unlock();
3876                         hci_le_create_cis(conn->link);
3877                         rcu_read_lock();
3878                 }
3879
3880                 if (i == rp->num_handles)
3881                         break;
3882         }
3883
3884         rcu_read_unlock();
3885
3886 unlock:
3887         hci_dev_unlock(hdev);
3888
3889         return rp->status;
3890 }
3891
3892 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3893                                    struct sk_buff *skb)
3894 {
3895         struct hci_rp_le_setup_iso_path *rp = data;
3896         struct hci_cp_le_setup_iso_path *cp;
3897         struct hci_conn *conn;
3898
3899         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3900
3901         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3902         if (!cp)
3903                 return rp->status;
3904
3905         hci_dev_lock(hdev);
3906
3907         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3908         if (!conn)
3909                 goto unlock;
3910
3911         if (rp->status) {
3912                 hci_connect_cfm(conn, rp->status);
3913                 hci_conn_del(conn);
3914                 goto unlock;
3915         }
3916
3917         switch (cp->direction) {
3918         /* Input (Host to Controller) */
3919         case 0x00:
3920                 /* Only confirm connection if output only */
3921                 if (conn->iso_qos.out.sdu && !conn->iso_qos.in.sdu)
3922                         hci_connect_cfm(conn, rp->status);
3923                 break;
3924         /* Output (Controller to Host) */
3925         case 0x01:
3926                 /* Confirm connection since conn->iso_qos is always configured
3927                  * last.
3928                  */
3929                 hci_connect_cfm(conn, rp->status);
3930                 break;
3931         }
3932
3933 unlock:
3934         hci_dev_unlock(hdev);
3935         return rp->status;
3936 }
3937
3938 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
3939 {
3940         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3941 }
3942
3943 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
3944                                    struct sk_buff *skb)
3945 {
3946         struct hci_ev_status *rp = data;
3947         struct hci_cp_le_set_per_adv_params *cp;
3948
3949         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3950
3951         if (rp->status)
3952                 return rp->status;
3953
3954         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
3955         if (!cp)
3956                 return rp->status;
3957
3958         /* TODO: set the conn state */
3959         return rp->status;
3960 }
3961
3962 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
3963                                        struct sk_buff *skb)
3964 {
3965         struct hci_ev_status *rp = data;
3966         __u8 *sent;
3967
3968         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3969
3970         if (rp->status)
3971                 return rp->status;
3972
3973         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
3974         if (!sent)
3975                 return rp->status;
3976
3977         hci_dev_lock(hdev);
3978
3979         if (*sent)
3980                 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
3981         else
3982                 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
3983
3984         hci_dev_unlock(hdev);
3985
3986         return rp->status;
3987 }
3988
3989 #define HCI_CC_VL(_op, _func, _min, _max) \
3990 { \
3991         .op = _op, \
3992         .func = _func, \
3993         .min_len = _min, \
3994         .max_len = _max, \
3995 }
3996
3997 #define HCI_CC(_op, _func, _len) \
3998         HCI_CC_VL(_op, _func, _len, _len)
3999
4000 #define HCI_CC_STATUS(_op, _func) \
4001         HCI_CC(_op, _func, sizeof(struct hci_ev_status))
4002
4003 static const struct hci_cc {
4004         u16  op;
4005         u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4006         u16  min_len;
4007         u16  max_len;
4008 } hci_cc_table[] = {
4009         HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4010         HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4011         HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4012         HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4013                       hci_cc_remote_name_req_cancel),
4014         HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4015                sizeof(struct hci_rp_role_discovery)),
4016         HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4017                sizeof(struct hci_rp_read_link_policy)),
4018         HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4019                sizeof(struct hci_rp_write_link_policy)),
4020         HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4021                sizeof(struct hci_rp_read_def_link_policy)),
4022         HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4023                       hci_cc_write_def_link_policy),
4024         HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4025         HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4026                sizeof(struct hci_rp_read_stored_link_key)),
4027         HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4028                sizeof(struct hci_rp_delete_stored_link_key)),
4029         HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4030         HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4031                sizeof(struct hci_rp_read_local_name)),
4032         HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4033         HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4034         HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4035         HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4036         HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4037                sizeof(struct hci_rp_read_class_of_dev)),
4038         HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4039         HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4040                sizeof(struct hci_rp_read_voice_setting)),
4041         HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4042         HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4043                sizeof(struct hci_rp_read_num_supported_iac)),
4044         HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4045         HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4046         HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4047                sizeof(struct hci_rp_read_auth_payload_to)),
4048         HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4049                sizeof(struct hci_rp_write_auth_payload_to)),
4050         HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4051                sizeof(struct hci_rp_read_local_version)),
4052         HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4053                sizeof(struct hci_rp_read_local_commands)),
4054         HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4055                sizeof(struct hci_rp_read_local_features)),
4056         HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4057                sizeof(struct hci_rp_read_local_ext_features)),
4058         HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4059                sizeof(struct hci_rp_read_buffer_size)),
4060         HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4061                sizeof(struct hci_rp_read_bd_addr)),
4062         HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4063                sizeof(struct hci_rp_read_local_pairing_opts)),
4064         HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4065                sizeof(struct hci_rp_read_page_scan_activity)),
4066         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4067                       hci_cc_write_page_scan_activity),
4068         HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4069                sizeof(struct hci_rp_read_page_scan_type)),
4070         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4071         HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4072                sizeof(struct hci_rp_read_data_block_size)),
4073         HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4074                sizeof(struct hci_rp_read_flow_control_mode)),
4075         HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4076                sizeof(struct hci_rp_read_local_amp_info)),
4077         HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4078                sizeof(struct hci_rp_read_clock)),
4079         HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4080                sizeof(struct hci_rp_read_enc_key_size)),
4081         HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4082                sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4083         HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4084                hci_cc_read_def_err_data_reporting,
4085                sizeof(struct hci_rp_read_def_err_data_reporting)),
4086         HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4087                       hci_cc_write_def_err_data_reporting),
4088         HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4089                sizeof(struct hci_rp_pin_code_reply)),
4090         HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4091                sizeof(struct hci_rp_pin_code_neg_reply)),
4092         HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4093                sizeof(struct hci_rp_read_local_oob_data)),
4094         HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4095                sizeof(struct hci_rp_read_local_oob_ext_data)),
4096         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4097                sizeof(struct hci_rp_le_read_buffer_size)),
4098         HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4099                sizeof(struct hci_rp_le_read_local_features)),
4100         HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4101                sizeof(struct hci_rp_le_read_adv_tx_power)),
4102         HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4103                sizeof(struct hci_rp_user_confirm_reply)),
4104         HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4105                sizeof(struct hci_rp_user_confirm_reply)),
4106         HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4107                sizeof(struct hci_rp_user_confirm_reply)),
4108         HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4109                sizeof(struct hci_rp_user_confirm_reply)),
4110         HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4111         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4112         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4113         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4114         HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4115                hci_cc_le_read_accept_list_size,
4116                sizeof(struct hci_rp_le_read_accept_list_size)),
4117         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4118         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4119                       hci_cc_le_add_to_accept_list),
4120         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4121                       hci_cc_le_del_from_accept_list),
4122         HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4123                sizeof(struct hci_rp_le_read_supported_states)),
4124         HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4125                sizeof(struct hci_rp_le_read_def_data_len)),
4126         HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4127                       hci_cc_le_write_def_data_len),
4128         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4129                       hci_cc_le_add_to_resolv_list),
4130         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4131                       hci_cc_le_del_from_resolv_list),
4132         HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4133                       hci_cc_le_clear_resolv_list),
4134         HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4135                sizeof(struct hci_rp_le_read_resolv_list_size)),
4136         HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4137                       hci_cc_le_set_addr_resolution_enable),
4138         HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4139                sizeof(struct hci_rp_le_read_max_data_len)),
4140         HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4141                       hci_cc_write_le_host_supported),
4142         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4143         HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4144                sizeof(struct hci_rp_read_rssi)),
4145         HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4146                sizeof(struct hci_rp_read_tx_power)),
4147         HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4148         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4149                       hci_cc_le_set_ext_scan_param),
4150         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4151                       hci_cc_le_set_ext_scan_enable),
4152         HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4153         HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4154                hci_cc_le_read_num_adv_sets,
4155                sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4156         HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4157                sizeof(struct hci_rp_le_set_ext_adv_params)),
4158         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4159                       hci_cc_le_set_ext_adv_enable),
4160         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4161                       hci_cc_le_set_adv_set_random_addr),
4162         HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4163         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4164         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4165         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4166                       hci_cc_le_set_per_adv_enable),
4167         HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4168                sizeof(struct hci_rp_le_read_transmit_power)),
4169 #ifdef TIZEN_BT
4170         HCI_CC(HCI_OP_ENABLE_RSSI, hci_cc_enable_rssi,
4171                sizeof(struct hci_cc_rsp_enable_rssi)),
4172         HCI_CC(HCI_OP_GET_RAW_RSSI, hci_cc_get_raw_rssi,
4173                sizeof(struct hci_cc_rp_get_raw_rssi)),
4174 #endif
4175         HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4176         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4177                sizeof(struct hci_rp_le_read_buffer_size_v2)),
4178         HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4179                   sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4180         HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4181                sizeof(struct hci_rp_le_setup_iso_path)),
4182 };
4183
4184 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4185                       struct sk_buff *skb)
4186 {
4187         void *data;
4188
4189         if (skb->len < cc->min_len) {
4190                 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4191                            cc->op, skb->len, cc->min_len);
4192                 return HCI_ERROR_UNSPECIFIED;
4193         }
4194
4195         /* Just warn if the length is over max_len size it still be possible to
4196          * partially parse the cc so leave to callback to decide if that is
4197          * acceptable.
4198          */
4199         if (skb->len > cc->max_len)
4200                 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4201                             cc->op, skb->len, cc->max_len);
4202
4203         data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4204         if (!data)
4205                 return HCI_ERROR_UNSPECIFIED;
4206
4207         return cc->func(hdev, data, skb);
4208 }
4209
4210 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4211                                  struct sk_buff *skb, u16 *opcode, u8 *status,
4212                                  hci_req_complete_t *req_complete,
4213                                  hci_req_complete_skb_t *req_complete_skb)
4214 {
4215         struct hci_ev_cmd_complete *ev = data;
4216         int i;
4217
4218         *opcode = __le16_to_cpu(ev->opcode);
4219
4220         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4221
4222         for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4223                 if (hci_cc_table[i].op == *opcode) {
4224                         *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4225                         break;
4226                 }
4227         }
4228
4229         if (i == ARRAY_SIZE(hci_cc_table)) {
4230                 /* Unknown opcode, assume byte 0 contains the status, so
4231                  * that e.g. __hci_cmd_sync() properly returns errors
4232                  * for vendor specific commands send by HCI drivers.
4233                  * If a vendor doesn't actually follow this convention we may
4234                  * need to introduce a vendor CC table in order to properly set
4235                  * the status.
4236                  */
4237                 *status = skb->data[0];
4238         }
4239
4240         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4241
4242         hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4243                              req_complete_skb);
4244
4245         if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4246                 bt_dev_err(hdev,
4247                            "unexpected event for opcode 0x%4.4x", *opcode);
4248                 return;
4249         }
4250
4251         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4252                 queue_work(hdev->workqueue, &hdev->cmd_work);
4253 }
4254
4255 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4256 {
4257         struct hci_cp_le_create_cis *cp;
4258         int i;
4259
4260         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4261
4262         if (!status)
4263                 return;
4264
4265         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4266         if (!cp)
4267                 return;
4268
4269         hci_dev_lock(hdev);
4270
4271         /* Remove connection if command failed */
4272         for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4273                 struct hci_conn *conn;
4274                 u16 handle;
4275
4276                 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4277
4278                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4279                 if (conn) {
4280                         conn->state = BT_CLOSED;
4281                         hci_connect_cfm(conn, status);
4282                         hci_conn_del(conn);
4283                 }
4284         }
4285
4286         hci_dev_unlock(hdev);
4287 }
4288
4289 #define HCI_CS(_op, _func) \
4290 { \
4291         .op = _op, \
4292         .func = _func, \
4293 }
4294
4295 static const struct hci_cs {
4296         u16  op;
4297         void (*func)(struct hci_dev *hdev, __u8 status);
4298 } hci_cs_table[] = {
4299         HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4300         HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4301         HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4302         HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4303         HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4304         HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4305         HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4306         HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4307         HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4308                hci_cs_read_remote_ext_features),
4309         HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4310         HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4311                hci_cs_enhanced_setup_sync_conn),
4312         HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4313         HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4314         HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4315         HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4316         HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4317         HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4318         HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4319         HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4320         HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4321 };
4322
4323 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4324                                struct sk_buff *skb, u16 *opcode, u8 *status,
4325                                hci_req_complete_t *req_complete,
4326                                hci_req_complete_skb_t *req_complete_skb)
4327 {
4328         struct hci_ev_cmd_status *ev = data;
4329         int i;
4330
4331         *opcode = __le16_to_cpu(ev->opcode);
4332         *status = ev->status;
4333
4334         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4335
4336         for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4337                 if (hci_cs_table[i].op == *opcode) {
4338                         hci_cs_table[i].func(hdev, ev->status);
4339                         break;
4340                 }
4341         }
4342
4343         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4344
4345         /* Indicate request completion if the command failed. Also, if
4346          * we're not waiting for a special event and we get a success
4347          * command status we should try to flag the request as completed
4348          * (since for this kind of commands there will not be a command
4349          * complete event).
4350          */
4351         if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4352                 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4353                                      req_complete_skb);
4354                 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4355                         bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4356                                    *opcode);
4357                         return;
4358                 }
4359         }
4360
4361         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4362                 queue_work(hdev->workqueue, &hdev->cmd_work);
4363 }
4364
4365 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4366                                    struct sk_buff *skb)
4367 {
4368         struct hci_ev_hardware_error *ev = data;
4369
4370         bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4371
4372         hdev->hw_error_code = ev->code;
4373
4374         queue_work(hdev->req_workqueue, &hdev->error_reset);
4375 }
4376
4377 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4378                                 struct sk_buff *skb)
4379 {
4380         struct hci_ev_role_change *ev = data;
4381         struct hci_conn *conn;
4382
4383         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4384
4385         hci_dev_lock(hdev);
4386
4387         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4388         if (conn) {
4389                 if (!ev->status)
4390                         conn->role = ev->role;
4391
4392                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4393
4394                 hci_role_switch_cfm(conn, ev->status, ev->role);
4395         }
4396
4397         hci_dev_unlock(hdev);
4398 }
4399
4400 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4401                                   struct sk_buff *skb)
4402 {
4403         struct hci_ev_num_comp_pkts *ev = data;
4404         int i;
4405
4406         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4407                              flex_array_size(ev, handles, ev->num)))
4408                 return;
4409
4410         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4411                 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4412                 return;
4413         }
4414
4415         bt_dev_dbg(hdev, "num %d", ev->num);
4416
4417         for (i = 0; i < ev->num; i++) {
4418                 struct hci_comp_pkts_info *info = &ev->handles[i];
4419                 struct hci_conn *conn;
4420                 __u16  handle, count;
4421
4422                 handle = __le16_to_cpu(info->handle);
4423                 count  = __le16_to_cpu(info->count);
4424
4425                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4426                 if (!conn)
4427                         continue;
4428
4429                 conn->sent -= count;
4430
4431                 switch (conn->type) {
4432                 case ACL_LINK:
4433                         hdev->acl_cnt += count;
4434                         if (hdev->acl_cnt > hdev->acl_pkts)
4435                                 hdev->acl_cnt = hdev->acl_pkts;
4436                         break;
4437
4438                 case LE_LINK:
4439                         if (hdev->le_pkts) {
4440                                 hdev->le_cnt += count;
4441                                 if (hdev->le_cnt > hdev->le_pkts)
4442                                         hdev->le_cnt = hdev->le_pkts;
4443                         } else {
4444                                 hdev->acl_cnt += count;
4445                                 if (hdev->acl_cnt > hdev->acl_pkts)
4446                                         hdev->acl_cnt = hdev->acl_pkts;
4447                         }
4448                         break;
4449
4450                 case SCO_LINK:
4451                         hdev->sco_cnt += count;
4452                         if (hdev->sco_cnt > hdev->sco_pkts)
4453                                 hdev->sco_cnt = hdev->sco_pkts;
4454                         break;
4455
4456                 case ISO_LINK:
4457                         if (hdev->iso_pkts) {
4458                                 hdev->iso_cnt += count;
4459                                 if (hdev->iso_cnt > hdev->iso_pkts)
4460                                         hdev->iso_cnt = hdev->iso_pkts;
4461                         } else if (hdev->le_pkts) {
4462                                 hdev->le_cnt += count;
4463                                 if (hdev->le_cnt > hdev->le_pkts)
4464                                         hdev->le_cnt = hdev->le_pkts;
4465                         } else {
4466                                 hdev->acl_cnt += count;
4467                                 if (hdev->acl_cnt > hdev->acl_pkts)
4468                                         hdev->acl_cnt = hdev->acl_pkts;
4469                         }
4470                         break;
4471
4472                 default:
4473                         bt_dev_err(hdev, "unknown type %d conn %p",
4474                                    conn->type, conn);
4475                         break;
4476                 }
4477         }
4478
4479         queue_work(hdev->workqueue, &hdev->tx_work);
4480 }
4481
4482 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4483                                                  __u16 handle)
4484 {
4485         struct hci_chan *chan;
4486
4487         switch (hdev->dev_type) {
4488         case HCI_PRIMARY:
4489                 return hci_conn_hash_lookup_handle(hdev, handle);
4490         case HCI_AMP:
4491                 chan = hci_chan_lookup_handle(hdev, handle);
4492                 if (chan)
4493                         return chan->conn;
4494                 break;
4495         default:
4496                 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4497                 break;
4498         }
4499
4500         return NULL;
4501 }
4502
4503 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4504                                     struct sk_buff *skb)
4505 {
4506         struct hci_ev_num_comp_blocks *ev = data;
4507         int i;
4508
4509         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4510                              flex_array_size(ev, handles, ev->num_hndl)))
4511                 return;
4512
4513         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4514                 bt_dev_err(hdev, "wrong event for mode %d",
4515                            hdev->flow_ctl_mode);
4516                 return;
4517         }
4518
4519         bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4520                    ev->num_hndl);
4521
4522         for (i = 0; i < ev->num_hndl; i++) {
4523                 struct hci_comp_blocks_info *info = &ev->handles[i];
4524                 struct hci_conn *conn = NULL;
4525                 __u16  handle, block_count;
4526
4527                 handle = __le16_to_cpu(info->handle);
4528                 block_count = __le16_to_cpu(info->blocks);
4529
4530                 conn = __hci_conn_lookup_handle(hdev, handle);
4531                 if (!conn)
4532                         continue;
4533
4534                 conn->sent -= block_count;
4535
4536                 switch (conn->type) {
4537                 case ACL_LINK:
4538                 case AMP_LINK:
4539                         hdev->block_cnt += block_count;
4540                         if (hdev->block_cnt > hdev->num_blocks)
4541                                 hdev->block_cnt = hdev->num_blocks;
4542                         break;
4543
4544                 default:
4545                         bt_dev_err(hdev, "unknown type %d conn %p",
4546                                    conn->type, conn);
4547                         break;
4548                 }
4549         }
4550
4551         queue_work(hdev->workqueue, &hdev->tx_work);
4552 }
4553
4554 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4555                                 struct sk_buff *skb)
4556 {
4557         struct hci_ev_mode_change *ev = data;
4558         struct hci_conn *conn;
4559
4560         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4561
4562         hci_dev_lock(hdev);
4563
4564         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4565         if (conn) {
4566                 conn->mode = ev->mode;
4567
4568                 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4569                                         &conn->flags)) {
4570                         if (conn->mode == HCI_CM_ACTIVE)
4571                                 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4572                         else
4573                                 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4574                 }
4575
4576                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4577                         hci_sco_setup(conn, ev->status);
4578         }
4579
4580         hci_dev_unlock(hdev);
4581 }
4582
4583 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4584                                      struct sk_buff *skb)
4585 {
4586         struct hci_ev_pin_code_req *ev = data;
4587         struct hci_conn *conn;
4588
4589         bt_dev_dbg(hdev, "");
4590
4591         hci_dev_lock(hdev);
4592
4593         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4594         if (!conn)
4595                 goto unlock;
4596
4597         if (conn->state == BT_CONNECTED) {
4598                 hci_conn_hold(conn);
4599                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4600                 hci_conn_drop(conn);
4601         }
4602
4603         if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4604             !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4605                 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4606                              sizeof(ev->bdaddr), &ev->bdaddr);
4607         } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4608                 u8 secure;
4609
4610                 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4611                         secure = 1;
4612                 else
4613                         secure = 0;
4614
4615                 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4616         }
4617
4618 unlock:
4619         hci_dev_unlock(hdev);
4620 }
4621
4622 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4623 {
4624         if (key_type == HCI_LK_CHANGED_COMBINATION)
4625                 return;
4626
4627         conn->pin_length = pin_len;
4628         conn->key_type = key_type;
4629
4630         switch (key_type) {
4631         case HCI_LK_LOCAL_UNIT:
4632         case HCI_LK_REMOTE_UNIT:
4633         case HCI_LK_DEBUG_COMBINATION:
4634                 return;
4635         case HCI_LK_COMBINATION:
4636                 if (pin_len == 16)
4637                         conn->pending_sec_level = BT_SECURITY_HIGH;
4638                 else
4639                         conn->pending_sec_level = BT_SECURITY_MEDIUM;
4640                 break;
4641         case HCI_LK_UNAUTH_COMBINATION_P192:
4642         case HCI_LK_UNAUTH_COMBINATION_P256:
4643                 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4644                 break;
4645         case HCI_LK_AUTH_COMBINATION_P192:
4646                 conn->pending_sec_level = BT_SECURITY_HIGH;
4647                 break;
4648         case HCI_LK_AUTH_COMBINATION_P256:
4649                 conn->pending_sec_level = BT_SECURITY_FIPS;
4650                 break;
4651         }
4652 }
4653
4654 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4655                                      struct sk_buff *skb)
4656 {
4657         struct hci_ev_link_key_req *ev = data;
4658         struct hci_cp_link_key_reply cp;
4659         struct hci_conn *conn;
4660         struct link_key *key;
4661
4662         bt_dev_dbg(hdev, "");
4663
4664         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4665                 return;
4666
4667         hci_dev_lock(hdev);
4668
4669         key = hci_find_link_key(hdev, &ev->bdaddr);
4670         if (!key) {
4671                 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4672                 goto not_found;
4673         }
4674
4675         bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4676
4677         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4678         if (conn) {
4679                 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4680
4681                 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4682                      key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4683                     conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4684                         bt_dev_dbg(hdev, "ignoring unauthenticated key");
4685                         goto not_found;
4686                 }
4687
4688                 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4689                     (conn->pending_sec_level == BT_SECURITY_HIGH ||
4690                      conn->pending_sec_level == BT_SECURITY_FIPS)) {
4691                         bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4692                         goto not_found;
4693                 }
4694
4695                 conn_set_key(conn, key->type, key->pin_len);
4696         }
4697
4698         bacpy(&cp.bdaddr, &ev->bdaddr);
4699         memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4700
4701         hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4702
4703         hci_dev_unlock(hdev);
4704
4705         return;
4706
4707 not_found:
4708         hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4709         hci_dev_unlock(hdev);
4710 }
4711
4712 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4713                                     struct sk_buff *skb)
4714 {
4715         struct hci_ev_link_key_notify *ev = data;
4716         struct hci_conn *conn;
4717         struct link_key *key;
4718         bool persistent;
4719         u8 pin_len = 0;
4720
4721         bt_dev_dbg(hdev, "");
4722
4723         hci_dev_lock(hdev);
4724
4725         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4726         if (!conn)
4727                 goto unlock;
4728
4729         hci_conn_hold(conn);
4730         conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4731         hci_conn_drop(conn);
4732
4733         set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4734         conn_set_key(conn, ev->key_type, conn->pin_length);
4735
4736         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4737                 goto unlock;
4738
4739         key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4740                                 ev->key_type, pin_len, &persistent);
4741         if (!key)
4742                 goto unlock;
4743
4744         /* Update connection information since adding the key will have
4745          * fixed up the type in the case of changed combination keys.
4746          */
4747         if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4748                 conn_set_key(conn, key->type, key->pin_len);
4749
4750         mgmt_new_link_key(hdev, key, persistent);
4751
4752         /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4753          * is set. If it's not set simply remove the key from the kernel
4754          * list (we've still notified user space about it but with
4755          * store_hint being 0).
4756          */
4757         if (key->type == HCI_LK_DEBUG_COMBINATION &&
4758             !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4759                 list_del_rcu(&key->list);
4760                 kfree_rcu(key, rcu);
4761                 goto unlock;
4762         }
4763
4764         if (persistent)
4765                 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4766         else
4767                 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4768
4769 unlock:
4770         hci_dev_unlock(hdev);
4771 }
4772
4773 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4774                                  struct sk_buff *skb)
4775 {
4776         struct hci_ev_clock_offset *ev = data;
4777         struct hci_conn *conn;
4778
4779         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4780
4781         hci_dev_lock(hdev);
4782
4783         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4784         if (conn && !ev->status) {
4785                 struct inquiry_entry *ie;
4786
4787                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4788                 if (ie) {
4789                         ie->data.clock_offset = ev->clock_offset;
4790                         ie->timestamp = jiffies;
4791                 }
4792         }
4793
4794         hci_dev_unlock(hdev);
4795 }
4796
4797 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4798                                     struct sk_buff *skb)
4799 {
4800         struct hci_ev_pkt_type_change *ev = data;
4801         struct hci_conn *conn;
4802
4803         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4804
4805         hci_dev_lock(hdev);
4806
4807         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4808         if (conn && !ev->status)
4809                 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4810
4811         hci_dev_unlock(hdev);
4812 }
4813
4814 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4815                                    struct sk_buff *skb)
4816 {
4817         struct hci_ev_pscan_rep_mode *ev = data;
4818         struct inquiry_entry *ie;
4819
4820         bt_dev_dbg(hdev, "");
4821
4822         hci_dev_lock(hdev);
4823
4824         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4825         if (ie) {
4826                 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4827                 ie->timestamp = jiffies;
4828         }
4829
4830         hci_dev_unlock(hdev);
4831 }
4832
4833 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4834                                              struct sk_buff *skb)
4835 {
4836         struct hci_ev_inquiry_result_rssi *ev = edata;
4837         struct inquiry_data data;
4838         int i;
4839
4840         bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4841
4842         if (!ev->num)
4843                 return;
4844
4845         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4846                 return;
4847
4848         hci_dev_lock(hdev);
4849
4850         if (skb->len == array_size(ev->num,
4851                                    sizeof(struct inquiry_info_rssi_pscan))) {
4852                 struct inquiry_info_rssi_pscan *info;
4853
4854                 for (i = 0; i < ev->num; i++) {
4855                         u32 flags;
4856
4857                         info = hci_ev_skb_pull(hdev, skb,
4858                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4859                                                sizeof(*info));
4860                         if (!info) {
4861                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4862                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4863                                 goto unlock;
4864                         }
4865
4866                         bacpy(&data.bdaddr, &info->bdaddr);
4867                         data.pscan_rep_mode     = info->pscan_rep_mode;
4868                         data.pscan_period_mode  = info->pscan_period_mode;
4869                         data.pscan_mode         = info->pscan_mode;
4870                         memcpy(data.dev_class, info->dev_class, 3);
4871                         data.clock_offset       = info->clock_offset;
4872                         data.rssi               = info->rssi;
4873                         data.ssp_mode           = 0x00;
4874
4875                         flags = hci_inquiry_cache_update(hdev, &data, false);
4876
4877                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4878                                           info->dev_class, info->rssi,
4879                                           flags, NULL, 0, NULL, 0, 0);
4880                 }
4881         } else if (skb->len == array_size(ev->num,
4882                                           sizeof(struct inquiry_info_rssi))) {
4883                 struct inquiry_info_rssi *info;
4884
4885                 for (i = 0; i < ev->num; i++) {
4886                         u32 flags;
4887
4888                         info = hci_ev_skb_pull(hdev, skb,
4889                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4890                                                sizeof(*info));
4891                         if (!info) {
4892                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4893                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4894                                 goto unlock;
4895                         }
4896
4897                         bacpy(&data.bdaddr, &info->bdaddr);
4898                         data.pscan_rep_mode     = info->pscan_rep_mode;
4899                         data.pscan_period_mode  = info->pscan_period_mode;
4900                         data.pscan_mode         = 0x00;
4901                         memcpy(data.dev_class, info->dev_class, 3);
4902                         data.clock_offset       = info->clock_offset;
4903                         data.rssi               = info->rssi;
4904                         data.ssp_mode           = 0x00;
4905
4906                         flags = hci_inquiry_cache_update(hdev, &data, false);
4907
4908                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4909                                           info->dev_class, info->rssi,
4910                                           flags, NULL, 0, NULL, 0, 0);
4911                 }
4912         } else {
4913                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4914                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4915         }
4916 unlock:
4917         hci_dev_unlock(hdev);
4918 }
4919
4920 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
4921                                         struct sk_buff *skb)
4922 {
4923         struct hci_ev_remote_ext_features *ev = data;
4924         struct hci_conn *conn;
4925
4926         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4927
4928         hci_dev_lock(hdev);
4929
4930         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4931         if (!conn)
4932                 goto unlock;
4933
4934         if (ev->page < HCI_MAX_PAGES)
4935                 memcpy(conn->features[ev->page], ev->features, 8);
4936
4937         if (!ev->status && ev->page == 0x01) {
4938                 struct inquiry_entry *ie;
4939
4940                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4941                 if (ie)
4942                         ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4943
4944                 if (ev->features[0] & LMP_HOST_SSP) {
4945                         set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4946                 } else {
4947                         /* It is mandatory by the Bluetooth specification that
4948                          * Extended Inquiry Results are only used when Secure
4949                          * Simple Pairing is enabled, but some devices violate
4950                          * this.
4951                          *
4952                          * To make these devices work, the internal SSP
4953                          * enabled flag needs to be cleared if the remote host
4954                          * features do not indicate SSP support */
4955                         clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4956                 }
4957
4958                 if (ev->features[0] & LMP_HOST_SC)
4959                         set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
4960         }
4961
4962         if (conn->state != BT_CONFIG)
4963                 goto unlock;
4964
4965         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
4966                 struct hci_cp_remote_name_req cp;
4967                 memset(&cp, 0, sizeof(cp));
4968                 bacpy(&cp.bdaddr, &conn->dst);
4969                 cp.pscan_rep_mode = 0x02;
4970                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
4971         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4972                 mgmt_device_connected(hdev, conn, NULL, 0);
4973
4974         if (!hci_outgoing_auth_needed(hdev, conn)) {
4975                 conn->state = BT_CONNECTED;
4976                 hci_connect_cfm(conn, ev->status);
4977                 hci_conn_drop(conn);
4978         }
4979
4980 unlock:
4981         hci_dev_unlock(hdev);
4982 }
4983
4984 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
4985                                        struct sk_buff *skb)
4986 {
4987         struct hci_ev_sync_conn_complete *ev = data;
4988         struct hci_conn *conn;
4989         u8 status = ev->status;
4990
4991         switch (ev->link_type) {
4992         case SCO_LINK:
4993         case ESCO_LINK:
4994                 break;
4995         default:
4996                 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
4997                  * for HCI_Synchronous_Connection_Complete is limited to
4998                  * either SCO or eSCO
4999                  */
5000                 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
5001                 return;
5002         }
5003
5004         bt_dev_dbg(hdev, "status 0x%2.2x", status);
5005
5006         hci_dev_lock(hdev);
5007
5008         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
5009         if (!conn) {
5010                 if (ev->link_type == ESCO_LINK)
5011                         goto unlock;
5012
5013                 /* When the link type in the event indicates SCO connection
5014                  * and lookup of the connection object fails, then check
5015                  * if an eSCO connection object exists.
5016                  *
5017                  * The core limits the synchronous connections to either
5018                  * SCO or eSCO. The eSCO connection is preferred and tried
5019                  * to be setup first and until successfully established,
5020                  * the link type will be hinted as eSCO.
5021                  */
5022                 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
5023                 if (!conn)
5024                         goto unlock;
5025         }
5026
5027         /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
5028          * Processing it more than once per connection can corrupt kernel memory.
5029          *
5030          * As the connection handle is set here for the first time, it indicates
5031          * whether the connection is already set up.
5032          */
5033         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
5034                 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5035                 goto unlock;
5036         }
5037
5038         switch (status) {
5039         case 0x00:
5040                 conn->handle = __le16_to_cpu(ev->handle);
5041                 if (conn->handle > HCI_CONN_HANDLE_MAX) {
5042                         bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
5043                                    conn->handle, HCI_CONN_HANDLE_MAX);
5044                         status = HCI_ERROR_INVALID_PARAMETERS;
5045                         conn->state = BT_CLOSED;
5046                         break;
5047                 }
5048
5049                 conn->state  = BT_CONNECTED;
5050                 conn->type   = ev->link_type;
5051
5052                 hci_debugfs_create_conn(conn);
5053                 hci_conn_add_sysfs(conn);
5054                 break;
5055
5056         case 0x10:      /* Connection Accept Timeout */
5057         case 0x0d:      /* Connection Rejected due to Limited Resources */
5058         case 0x11:      /* Unsupported Feature or Parameter Value */
5059         case 0x1c:      /* SCO interval rejected */
5060         case 0x1a:      /* Unsupported Remote Feature */
5061         case 0x1e:      /* Invalid LMP Parameters */
5062         case 0x1f:      /* Unspecified error */
5063         case 0x20:      /* Unsupported LMP Parameter value */
5064                 if (conn->out) {
5065                         conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5066                                         (hdev->esco_type & EDR_ESCO_MASK);
5067                         if (hci_setup_sync(conn, conn->link->handle))
5068                                 goto unlock;
5069                 }
5070                 fallthrough;
5071
5072         default:
5073                 conn->state = BT_CLOSED;
5074                 break;
5075         }
5076
5077         bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5078         /* Notify only in case of SCO over HCI transport data path which
5079          * is zero and non-zero value shall be non-HCI transport data path
5080          */
5081         if (conn->codec.data_path == 0 && hdev->notify) {
5082                 switch (ev->air_mode) {
5083                 case 0x02:
5084                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5085                         break;
5086                 case 0x03:
5087                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5088                         break;
5089                 }
5090         }
5091
5092         hci_connect_cfm(conn, status);
5093         if (status)
5094                 hci_conn_del(conn);
5095
5096 unlock:
5097         hci_dev_unlock(hdev);
5098 }
5099
5100 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5101 {
5102         size_t parsed = 0;
5103
5104         while (parsed < eir_len) {
5105                 u8 field_len = eir[0];
5106
5107                 if (field_len == 0)
5108                         return parsed;
5109
5110                 parsed += field_len + 1;
5111                 eir += field_len + 1;
5112         }
5113
5114         return eir_len;
5115 }
5116
5117 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5118                                             struct sk_buff *skb)
5119 {
5120         struct hci_ev_ext_inquiry_result *ev = edata;
5121         struct inquiry_data data;
5122         size_t eir_len;
5123         int i;
5124
5125         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5126                              flex_array_size(ev, info, ev->num)))
5127                 return;
5128
5129         bt_dev_dbg(hdev, "num %d", ev->num);
5130
5131         if (!ev->num)
5132                 return;
5133
5134         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5135                 return;
5136
5137         hci_dev_lock(hdev);
5138
5139         for (i = 0; i < ev->num; i++) {
5140                 struct extended_inquiry_info *info = &ev->info[i];
5141                 u32 flags;
5142                 bool name_known;
5143
5144                 bacpy(&data.bdaddr, &info->bdaddr);
5145                 data.pscan_rep_mode     = info->pscan_rep_mode;
5146                 data.pscan_period_mode  = info->pscan_period_mode;
5147                 data.pscan_mode         = 0x00;
5148                 memcpy(data.dev_class, info->dev_class, 3);
5149                 data.clock_offset       = info->clock_offset;
5150                 data.rssi               = info->rssi;
5151                 data.ssp_mode           = 0x01;
5152
5153                 if (hci_dev_test_flag(hdev, HCI_MGMT))
5154                         name_known = eir_get_data(info->data,
5155                                                   sizeof(info->data),
5156                                                   EIR_NAME_COMPLETE, NULL);
5157                 else
5158                         name_known = true;
5159
5160                 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5161
5162                 eir_len = eir_get_length(info->data, sizeof(info->data));
5163
5164                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5165                                   info->dev_class, info->rssi,
5166                                   flags, info->data, eir_len, NULL, 0, 0);
5167         }
5168
5169         hci_dev_unlock(hdev);
5170 }
5171
5172 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5173                                          struct sk_buff *skb)
5174 {
5175         struct hci_ev_key_refresh_complete *ev = data;
5176         struct hci_conn *conn;
5177
5178         bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5179                    __le16_to_cpu(ev->handle));
5180
5181         hci_dev_lock(hdev);
5182
5183         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5184         if (!conn)
5185                 goto unlock;
5186
5187         /* For BR/EDR the necessary steps are taken through the
5188          * auth_complete event.
5189          */
5190         if (conn->type != LE_LINK)
5191                 goto unlock;
5192
5193         if (!ev->status)
5194                 conn->sec_level = conn->pending_sec_level;
5195
5196         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5197
5198         if (ev->status && conn->state == BT_CONNECTED) {
5199                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5200                 hci_conn_drop(conn);
5201                 goto unlock;
5202         }
5203
5204         if (conn->state == BT_CONFIG) {
5205                 if (!ev->status)
5206                         conn->state = BT_CONNECTED;
5207
5208                 hci_connect_cfm(conn, ev->status);
5209                 hci_conn_drop(conn);
5210         } else {
5211                 hci_auth_cfm(conn, ev->status);
5212
5213                 hci_conn_hold(conn);
5214                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5215                 hci_conn_drop(conn);
5216         }
5217
5218 unlock:
5219         hci_dev_unlock(hdev);
5220 }
5221
5222 static u8 hci_get_auth_req(struct hci_conn *conn)
5223 {
5224         /* If remote requests no-bonding follow that lead */
5225         if (conn->remote_auth == HCI_AT_NO_BONDING ||
5226             conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5227                 return conn->remote_auth | (conn->auth_type & 0x01);
5228
5229         /* If both remote and local have enough IO capabilities, require
5230          * MITM protection
5231          */
5232         if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5233             conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5234                 return conn->remote_auth | 0x01;
5235
5236         /* No MITM protection possible so ignore remote requirement */
5237         return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5238 }
5239
5240 static u8 bredr_oob_data_present(struct hci_conn *conn)
5241 {
5242         struct hci_dev *hdev = conn->hdev;
5243         struct oob_data *data;
5244
5245         data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5246         if (!data)
5247                 return 0x00;
5248
5249         if (bredr_sc_enabled(hdev)) {
5250                 /* When Secure Connections is enabled, then just
5251                  * return the present value stored with the OOB
5252                  * data. The stored value contains the right present
5253                  * information. However it can only be trusted when
5254                  * not in Secure Connection Only mode.
5255                  */
5256                 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5257                         return data->present;
5258
5259                 /* When Secure Connections Only mode is enabled, then
5260                  * the P-256 values are required. If they are not
5261                  * available, then do not declare that OOB data is
5262                  * present.
5263                  */
5264                 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
5265                     !memcmp(data->hash256, ZERO_KEY, 16))
5266                         return 0x00;
5267
5268                 return 0x02;
5269         }
5270
5271         /* When Secure Connections is not enabled or actually
5272          * not supported by the hardware, then check that if
5273          * P-192 data values are present.
5274          */
5275         if (!memcmp(data->rand192, ZERO_KEY, 16) ||
5276             !memcmp(data->hash192, ZERO_KEY, 16))
5277                 return 0x00;
5278
5279         return 0x01;
5280 }
5281
5282 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5283                                     struct sk_buff *skb)
5284 {
5285         struct hci_ev_io_capa_request *ev = data;
5286         struct hci_conn *conn;
5287
5288         bt_dev_dbg(hdev, "");
5289
5290         hci_dev_lock(hdev);
5291
5292         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5293         if (!conn)
5294                 goto unlock;
5295
5296         hci_conn_hold(conn);
5297
5298         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5299                 goto unlock;
5300
5301         /* Allow pairing if we're pairable, the initiators of the
5302          * pairing or if the remote is not requesting bonding.
5303          */
5304         if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5305             test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5306             (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5307                 struct hci_cp_io_capability_reply cp;
5308
5309                 bacpy(&cp.bdaddr, &ev->bdaddr);
5310                 /* Change the IO capability from KeyboardDisplay
5311                  * to DisplayYesNo as it is not supported by BT spec. */
5312                 cp.capability = (conn->io_capability == 0x04) ?
5313                                 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5314
5315                 /* If we are initiators, there is no remote information yet */
5316                 if (conn->remote_auth == 0xff) {
5317                         /* Request MITM protection if our IO caps allow it
5318                          * except for the no-bonding case.
5319                          */
5320                         if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5321                             conn->auth_type != HCI_AT_NO_BONDING)
5322                                 conn->auth_type |= 0x01;
5323                 } else {
5324                         conn->auth_type = hci_get_auth_req(conn);
5325                 }
5326
5327                 /* If we're not bondable, force one of the non-bondable
5328                  * authentication requirement values.
5329                  */
5330                 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5331                         conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5332
5333                 cp.authentication = conn->auth_type;
5334                 cp.oob_data = bredr_oob_data_present(conn);
5335
5336                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5337                              sizeof(cp), &cp);
5338         } else {
5339                 struct hci_cp_io_capability_neg_reply cp;
5340
5341                 bacpy(&cp.bdaddr, &ev->bdaddr);
5342                 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5343
5344                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5345                              sizeof(cp), &cp);
5346         }
5347
5348 unlock:
5349         hci_dev_unlock(hdev);
5350 }
5351
5352 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5353                                   struct sk_buff *skb)
5354 {
5355         struct hci_ev_io_capa_reply *ev = data;
5356         struct hci_conn *conn;
5357
5358         bt_dev_dbg(hdev, "");
5359
5360         hci_dev_lock(hdev);
5361
5362         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5363         if (!conn)
5364                 goto unlock;
5365
5366         conn->remote_cap = ev->capability;
5367         conn->remote_auth = ev->authentication;
5368
5369 unlock:
5370         hci_dev_unlock(hdev);
5371 }
5372
5373 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5374                                          struct sk_buff *skb)
5375 {
5376         struct hci_ev_user_confirm_req *ev = data;
5377         int loc_mitm, rem_mitm, confirm_hint = 0;
5378         struct hci_conn *conn;
5379
5380         bt_dev_dbg(hdev, "");
5381
5382         hci_dev_lock(hdev);
5383
5384         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5385                 goto unlock;
5386
5387         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5388         if (!conn)
5389                 goto unlock;
5390
5391         loc_mitm = (conn->auth_type & 0x01);
5392         rem_mitm = (conn->remote_auth & 0x01);
5393
5394         /* If we require MITM but the remote device can't provide that
5395          * (it has NoInputNoOutput) then reject the confirmation
5396          * request. We check the security level here since it doesn't
5397          * necessarily match conn->auth_type.
5398          */
5399         if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5400             conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5401                 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5402                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5403                              sizeof(ev->bdaddr), &ev->bdaddr);
5404                 goto unlock;
5405         }
5406
5407         /* If no side requires MITM protection; auto-accept */
5408         if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5409             (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5410
5411                 /* If we're not the initiators request authorization to
5412                  * proceed from user space (mgmt_user_confirm with
5413                  * confirm_hint set to 1). The exception is if neither
5414                  * side had MITM or if the local IO capability is
5415                  * NoInputNoOutput, in which case we do auto-accept
5416                  */
5417                 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5418                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5419                     (loc_mitm || rem_mitm)) {
5420                         bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5421                         confirm_hint = 1;
5422                         goto confirm;
5423                 }
5424
5425                 /* If there already exists link key in local host, leave the
5426                  * decision to user space since the remote device could be
5427                  * legitimate or malicious.
5428                  */
5429                 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5430                         bt_dev_dbg(hdev, "Local host already has link key");
5431                         confirm_hint = 1;
5432                         goto confirm;
5433                 }
5434
5435                 BT_DBG("Auto-accept of user confirmation with %ums delay",
5436                        hdev->auto_accept_delay);
5437
5438                 if (hdev->auto_accept_delay > 0) {
5439                         int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5440                         queue_delayed_work(conn->hdev->workqueue,
5441                                            &conn->auto_accept_work, delay);
5442                         goto unlock;
5443                 }
5444
5445                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5446                              sizeof(ev->bdaddr), &ev->bdaddr);
5447                 goto unlock;
5448         }
5449
5450 confirm:
5451         mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5452                                   le32_to_cpu(ev->passkey), confirm_hint);
5453
5454 unlock:
5455         hci_dev_unlock(hdev);
5456 }
5457
5458 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5459                                          struct sk_buff *skb)
5460 {
5461         struct hci_ev_user_passkey_req *ev = data;
5462
5463         bt_dev_dbg(hdev, "");
5464
5465         if (hci_dev_test_flag(hdev, HCI_MGMT))
5466                 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5467 }
5468
5469 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5470                                         struct sk_buff *skb)
5471 {
5472         struct hci_ev_user_passkey_notify *ev = data;
5473         struct hci_conn *conn;
5474
5475         bt_dev_dbg(hdev, "");
5476
5477         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5478         if (!conn)
5479                 return;
5480
5481         conn->passkey_notify = __le32_to_cpu(ev->passkey);
5482         conn->passkey_entered = 0;
5483
5484         if (hci_dev_test_flag(hdev, HCI_MGMT))
5485                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5486                                          conn->dst_type, conn->passkey_notify,
5487                                          conn->passkey_entered);
5488 }
5489
5490 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5491                                     struct sk_buff *skb)
5492 {
5493         struct hci_ev_keypress_notify *ev = data;
5494         struct hci_conn *conn;
5495
5496         bt_dev_dbg(hdev, "");
5497
5498         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5499         if (!conn)
5500                 return;
5501
5502         switch (ev->type) {
5503         case HCI_KEYPRESS_STARTED:
5504                 conn->passkey_entered = 0;
5505                 return;
5506
5507         case HCI_KEYPRESS_ENTERED:
5508                 conn->passkey_entered++;
5509                 break;
5510
5511         case HCI_KEYPRESS_ERASED:
5512                 conn->passkey_entered--;
5513                 break;
5514
5515         case HCI_KEYPRESS_CLEARED:
5516                 conn->passkey_entered = 0;
5517                 break;
5518
5519         case HCI_KEYPRESS_COMPLETED:
5520                 return;
5521         }
5522
5523         if (hci_dev_test_flag(hdev, HCI_MGMT))
5524                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5525                                          conn->dst_type, conn->passkey_notify,
5526                                          conn->passkey_entered);
5527 }
5528
5529 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5530                                          struct sk_buff *skb)
5531 {
5532         struct hci_ev_simple_pair_complete *ev = data;
5533         struct hci_conn *conn;
5534
5535         bt_dev_dbg(hdev, "");
5536
5537         hci_dev_lock(hdev);
5538
5539         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5540         if (!conn)
5541                 goto unlock;
5542
5543         /* Reset the authentication requirement to unknown */
5544         conn->remote_auth = 0xff;
5545
5546         /* To avoid duplicate auth_failed events to user space we check
5547          * the HCI_CONN_AUTH_PEND flag which will be set if we
5548          * initiated the authentication. A traditional auth_complete
5549          * event gets always produced as initiator and is also mapped to
5550          * the mgmt_auth_failed event */
5551         if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5552                 mgmt_auth_failed(conn, ev->status);
5553
5554         hci_conn_drop(conn);
5555
5556 unlock:
5557         hci_dev_unlock(hdev);
5558 }
5559
5560 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5561                                          struct sk_buff *skb)
5562 {
5563         struct hci_ev_remote_host_features *ev = data;
5564         struct inquiry_entry *ie;
5565         struct hci_conn *conn;
5566
5567         bt_dev_dbg(hdev, "");
5568
5569         hci_dev_lock(hdev);
5570
5571         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5572         if (conn)
5573                 memcpy(conn->features[1], ev->features, 8);
5574
5575         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5576         if (ie)
5577                 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5578
5579         hci_dev_unlock(hdev);
5580 }
5581
5582 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5583                                             struct sk_buff *skb)
5584 {
5585         struct hci_ev_remote_oob_data_request *ev = edata;
5586         struct oob_data *data;
5587
5588         bt_dev_dbg(hdev, "");
5589
5590         hci_dev_lock(hdev);
5591
5592         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5593                 goto unlock;
5594
5595         data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5596         if (!data) {
5597                 struct hci_cp_remote_oob_data_neg_reply cp;
5598
5599                 bacpy(&cp.bdaddr, &ev->bdaddr);
5600                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5601                              sizeof(cp), &cp);
5602                 goto unlock;
5603         }
5604
5605         if (bredr_sc_enabled(hdev)) {
5606                 struct hci_cp_remote_oob_ext_data_reply cp;
5607
5608                 bacpy(&cp.bdaddr, &ev->bdaddr);
5609                 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5610                         memset(cp.hash192, 0, sizeof(cp.hash192));
5611                         memset(cp.rand192, 0, sizeof(cp.rand192));
5612                 } else {
5613                         memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5614                         memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5615                 }
5616                 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5617                 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5618
5619                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5620                              sizeof(cp), &cp);
5621         } else {
5622                 struct hci_cp_remote_oob_data_reply cp;
5623
5624                 bacpy(&cp.bdaddr, &ev->bdaddr);
5625                 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5626                 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5627
5628                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5629                              sizeof(cp), &cp);
5630         }
5631
5632 unlock:
5633         hci_dev_unlock(hdev);
5634 }
5635
5636 #if IS_ENABLED(CONFIG_BT_HS)
5637 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5638                                   struct sk_buff *skb)
5639 {
5640         struct hci_ev_channel_selected *ev = data;
5641         struct hci_conn *hcon;
5642
5643         bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5644
5645         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5646         if (!hcon)
5647                 return;
5648
5649         amp_read_loc_assoc_final_data(hdev, hcon);
5650 }
5651
5652 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5653                                       struct sk_buff *skb)
5654 {
5655         struct hci_ev_phy_link_complete *ev = data;
5656         struct hci_conn *hcon, *bredr_hcon;
5657
5658         bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5659                    ev->status);
5660
5661         hci_dev_lock(hdev);
5662
5663         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5664         if (!hcon)
5665                 goto unlock;
5666
5667         if (!hcon->amp_mgr)
5668                 goto unlock;
5669
5670         if (ev->status) {
5671                 hci_conn_del(hcon);
5672                 goto unlock;
5673         }
5674
5675         bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5676
5677         hcon->state = BT_CONNECTED;
5678         bacpy(&hcon->dst, &bredr_hcon->dst);
5679
5680         hci_conn_hold(hcon);
5681         hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5682         hci_conn_drop(hcon);
5683
5684         hci_debugfs_create_conn(hcon);
5685         hci_conn_add_sysfs(hcon);
5686
5687         amp_physical_cfm(bredr_hcon, hcon);
5688
5689 unlock:
5690         hci_dev_unlock(hdev);
5691 }
5692
5693 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5694                                      struct sk_buff *skb)
5695 {
5696         struct hci_ev_logical_link_complete *ev = data;
5697         struct hci_conn *hcon;
5698         struct hci_chan *hchan;
5699         struct amp_mgr *mgr;
5700
5701         bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5702                    le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5703
5704         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5705         if (!hcon)
5706                 return;
5707
5708         /* Create AMP hchan */
5709         hchan = hci_chan_create(hcon);
5710         if (!hchan)
5711                 return;
5712
5713         hchan->handle = le16_to_cpu(ev->handle);
5714         hchan->amp = true;
5715
5716         BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5717
5718         mgr = hcon->amp_mgr;
5719         if (mgr && mgr->bredr_chan) {
5720                 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5721
5722                 l2cap_chan_lock(bredr_chan);
5723
5724                 bredr_chan->conn->mtu = hdev->block_mtu;
5725                 l2cap_logical_cfm(bredr_chan, hchan, 0);
5726                 hci_conn_hold(hcon);
5727
5728                 l2cap_chan_unlock(bredr_chan);
5729         }
5730 }
5731
5732 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5733                                              struct sk_buff *skb)
5734 {
5735         struct hci_ev_disconn_logical_link_complete *ev = data;
5736         struct hci_chan *hchan;
5737
5738         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5739                    le16_to_cpu(ev->handle), ev->status);
5740
5741         if (ev->status)
5742                 return;
5743
5744         hci_dev_lock(hdev);
5745
5746         hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5747         if (!hchan || !hchan->amp)
5748                 goto unlock;
5749
5750         amp_destroy_logical_link(hchan, ev->reason);
5751
5752 unlock:
5753         hci_dev_unlock(hdev);
5754 }
5755
5756 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5757                                              struct sk_buff *skb)
5758 {
5759         struct hci_ev_disconn_phy_link_complete *ev = data;
5760         struct hci_conn *hcon;
5761
5762         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5763
5764         if (ev->status)
5765                 return;
5766
5767         hci_dev_lock(hdev);
5768
5769         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5770         if (hcon && hcon->type == AMP_LINK) {
5771                 hcon->state = BT_CLOSED;
5772                 hci_disconn_cfm(hcon, ev->reason);
5773                 hci_conn_del(hcon);
5774         }
5775
5776         hci_dev_unlock(hdev);
5777 }
5778 #endif
5779
5780 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5781                                 u8 bdaddr_type, bdaddr_t *local_rpa)
5782 {
5783         if (conn->out) {
5784                 conn->dst_type = bdaddr_type;
5785                 conn->resp_addr_type = bdaddr_type;
5786                 bacpy(&conn->resp_addr, bdaddr);
5787
5788                 /* Check if the controller has set a Local RPA then it must be
5789                  * used instead or hdev->rpa.
5790                  */
5791                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5792                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5793                         bacpy(&conn->init_addr, local_rpa);
5794                 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5795                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5796                         bacpy(&conn->init_addr, &conn->hdev->rpa);
5797                 } else {
5798                         hci_copy_identity_address(conn->hdev, &conn->init_addr,
5799                                                   &conn->init_addr_type);
5800                 }
5801         } else {
5802                 conn->resp_addr_type = conn->hdev->adv_addr_type;
5803                 /* Check if the controller has set a Local RPA then it must be
5804                  * used instead or hdev->rpa.
5805                  */
5806                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5807                         conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5808                         bacpy(&conn->resp_addr, local_rpa);
5809                 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5810                         /* In case of ext adv, resp_addr will be updated in
5811                          * Adv Terminated event.
5812                          */
5813                         if (!ext_adv_capable(conn->hdev))
5814                                 bacpy(&conn->resp_addr,
5815                                       &conn->hdev->random_addr);
5816                 } else {
5817                         bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5818                 }
5819
5820                 conn->init_addr_type = bdaddr_type;
5821                 bacpy(&conn->init_addr, bdaddr);
5822
5823                 /* For incoming connections, set the default minimum
5824                  * and maximum connection interval. They will be used
5825                  * to check if the parameters are in range and if not
5826                  * trigger the connection update procedure.
5827                  */
5828                 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5829                 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5830         }
5831 }
5832
5833 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5834                                  bdaddr_t *bdaddr, u8 bdaddr_type,
5835                                  bdaddr_t *local_rpa, u8 role, u16 handle,
5836                                  u16 interval, u16 latency,
5837                                  u16 supervision_timeout)
5838 {
5839         struct hci_conn_params *params;
5840         struct hci_conn *conn;
5841         struct smp_irk *irk;
5842         u8 addr_type;
5843
5844         hci_dev_lock(hdev);
5845
5846         /* All controllers implicitly stop advertising in the event of a
5847          * connection, so ensure that the state bit is cleared.
5848          */
5849         hci_dev_clear_flag(hdev, HCI_LE_ADV);
5850
5851         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
5852         if (!conn) {
5853                 /* In case of error status and there is no connection pending
5854                  * just unlock as there is nothing to cleanup.
5855                  */
5856                 if (status)
5857                         goto unlock;
5858
5859                 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role);
5860                 if (!conn) {
5861                         bt_dev_err(hdev, "no memory for new connection");
5862                         goto unlock;
5863                 }
5864
5865                 conn->dst_type = bdaddr_type;
5866
5867                 /* If we didn't have a hci_conn object previously
5868                  * but we're in central role this must be something
5869                  * initiated using an accept list. Since accept list based
5870                  * connections are not "first class citizens" we don't
5871                  * have full tracking of them. Therefore, we go ahead
5872                  * with a "best effort" approach of determining the
5873                  * initiator address based on the HCI_PRIVACY flag.
5874                  */
5875                 if (conn->out) {
5876                         conn->resp_addr_type = bdaddr_type;
5877                         bacpy(&conn->resp_addr, bdaddr);
5878                         if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5879                                 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5880                                 bacpy(&conn->init_addr, &hdev->rpa);
5881                         } else {
5882                                 hci_copy_identity_address(hdev,
5883                                                           &conn->init_addr,
5884                                                           &conn->init_addr_type);
5885                         }
5886                 }
5887         } else {
5888                 cancel_delayed_work(&conn->le_conn_timeout);
5889         }
5890
5891         /* The HCI_LE_Connection_Complete event is only sent once per connection.
5892          * Processing it more than once per connection can corrupt kernel memory.
5893          *
5894          * As the connection handle is set here for the first time, it indicates
5895          * whether the connection is already set up.
5896          */
5897         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
5898                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
5899                 goto unlock;
5900         }
5901
5902         le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
5903
5904         /* Lookup the identity address from the stored connection
5905          * address and address type.
5906          *
5907          * When establishing connections to an identity address, the
5908          * connection procedure will store the resolvable random
5909          * address first. Now if it can be converted back into the
5910          * identity address, start using the identity address from
5911          * now on.
5912          */
5913         irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
5914         if (irk) {
5915                 bacpy(&conn->dst, &irk->bdaddr);
5916                 conn->dst_type = irk->addr_type;
5917         }
5918
5919         conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
5920
5921         if (handle > HCI_CONN_HANDLE_MAX) {
5922                 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle,
5923                            HCI_CONN_HANDLE_MAX);
5924                 status = HCI_ERROR_INVALID_PARAMETERS;
5925         }
5926
5927         /* All connection failure handling is taken care of by the
5928          * hci_conn_failed function which is triggered by the HCI
5929          * request completion callbacks used for connecting.
5930          */
5931         if (status)
5932                 goto unlock;
5933
5934         /* Drop the connection if it has been aborted */
5935         if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
5936                 hci_conn_drop(conn);
5937                 goto unlock;
5938         }
5939
5940         if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
5941                 addr_type = BDADDR_LE_PUBLIC;
5942         else
5943                 addr_type = BDADDR_LE_RANDOM;
5944
5945         /* Drop the connection if the device is blocked */
5946         if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
5947                 hci_conn_drop(conn);
5948                 goto unlock;
5949         }
5950
5951         if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5952                 mgmt_device_connected(hdev, conn, NULL, 0);
5953
5954         conn->sec_level = BT_SECURITY_LOW;
5955         conn->handle = handle;
5956         conn->state = BT_CONFIG;
5957
5958         /* Store current advertising instance as connection advertising instance
5959          * when sotfware rotation is in use so it can be re-enabled when
5960          * disconnected.
5961          */
5962         if (!ext_adv_capable(hdev))
5963                 conn->adv_instance = hdev->cur_adv_instance;
5964
5965         conn->le_conn_interval = interval;
5966         conn->le_conn_latency = latency;
5967         conn->le_supv_timeout = supervision_timeout;
5968
5969         hci_debugfs_create_conn(conn);
5970         hci_conn_add_sysfs(conn);
5971
5972         /* The remote features procedure is defined for central
5973          * role only. So only in case of an initiated connection
5974          * request the remote features.
5975          *
5976          * If the local controller supports peripheral-initiated features
5977          * exchange, then requesting the remote features in peripheral
5978          * role is possible. Otherwise just transition into the
5979          * connected state without requesting the remote features.
5980          */
5981         if (conn->out ||
5982             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
5983                 struct hci_cp_le_read_remote_features cp;
5984
5985                 cp.handle = __cpu_to_le16(conn->handle);
5986
5987                 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
5988                              sizeof(cp), &cp);
5989
5990                 hci_conn_hold(conn);
5991         } else {
5992                 conn->state = BT_CONNECTED;
5993                 hci_connect_cfm(conn, status);
5994         }
5995
5996         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
5997                                            conn->dst_type);
5998         if (params) {
5999                 list_del_init(&params->action);
6000                 if (params->conn) {
6001                         hci_conn_drop(params->conn);
6002                         hci_conn_put(params->conn);
6003                         params->conn = NULL;
6004                 }
6005         }
6006
6007 unlock:
6008         hci_update_passive_scan(hdev);
6009         hci_dev_unlock(hdev);
6010 }
6011
6012 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
6013                                      struct sk_buff *skb)
6014 {
6015         struct hci_ev_le_conn_complete *ev = data;
6016
6017         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6018
6019         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6020                              NULL, ev->role, le16_to_cpu(ev->handle),
6021                              le16_to_cpu(ev->interval),
6022                              le16_to_cpu(ev->latency),
6023                              le16_to_cpu(ev->supervision_timeout));
6024 }
6025
6026 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
6027                                          struct sk_buff *skb)
6028 {
6029         struct hci_ev_le_enh_conn_complete *ev = data;
6030
6031         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6032
6033         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6034                              &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
6035                              le16_to_cpu(ev->interval),
6036                              le16_to_cpu(ev->latency),
6037                              le16_to_cpu(ev->supervision_timeout));
6038 }
6039
6040 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6041                                     struct sk_buff *skb)
6042 {
6043         struct hci_evt_le_ext_adv_set_term *ev = data;
6044         struct hci_conn *conn;
6045         struct adv_info *adv, *n;
6046
6047         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6048
6049         /* The Bluetooth Core 5.3 specification clearly states that this event
6050          * shall not be sent when the Host disables the advertising set. So in
6051          * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6052          *
6053          * When the Host disables an advertising set, all cleanup is done via
6054          * its command callback and not needed to be duplicated here.
6055          */
6056         if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6057                 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6058                 return;
6059         }
6060
6061         hci_dev_lock(hdev);
6062
6063         adv = hci_find_adv_instance(hdev, ev->handle);
6064
6065         if (ev->status) {
6066                 if (!adv)
6067                         goto unlock;
6068
6069                 /* Remove advertising as it has been terminated */
6070                 hci_remove_adv_instance(hdev, ev->handle);
6071                 mgmt_advertising_removed(NULL, hdev, ev->handle);
6072
6073                 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6074                         if (adv->enabled)
6075                                 goto unlock;
6076                 }
6077
6078                 /* We are no longer advertising, clear HCI_LE_ADV */
6079                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6080                 goto unlock;
6081         }
6082
6083         if (adv)
6084                 adv->enabled = false;
6085
6086         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6087         if (conn) {
6088                 /* Store handle in the connection so the correct advertising
6089                  * instance can be re-enabled when disconnected.
6090                  */
6091                 conn->adv_instance = ev->handle;
6092
6093                 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6094                     bacmp(&conn->resp_addr, BDADDR_ANY))
6095                         goto unlock;
6096
6097                 if (!ev->handle) {
6098                         bacpy(&conn->resp_addr, &hdev->random_addr);
6099                         goto unlock;
6100                 }
6101
6102                 if (adv)
6103                         bacpy(&conn->resp_addr, &adv->random_addr);
6104         }
6105
6106 unlock:
6107         hci_dev_unlock(hdev);
6108 }
6109
6110 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6111                                             struct sk_buff *skb)
6112 {
6113         struct hci_ev_le_conn_update_complete *ev = data;
6114         struct hci_conn *conn;
6115
6116         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6117
6118         if (ev->status)
6119                 return;
6120
6121         hci_dev_lock(hdev);
6122
6123         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6124         if (conn) {
6125                 conn->le_conn_interval = le16_to_cpu(ev->interval);
6126                 conn->le_conn_latency = le16_to_cpu(ev->latency);
6127                 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6128         }
6129
6130         hci_dev_unlock(hdev);
6131 }
6132
6133 /* This function requires the caller holds hdev->lock */
6134 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6135                                               bdaddr_t *addr,
6136                                               u8 addr_type, bool addr_resolved,
6137                                               u8 adv_type)
6138 {
6139         struct hci_conn *conn;
6140         struct hci_conn_params *params;
6141
6142         /* If the event is not connectable don't proceed further */
6143         if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6144                 return NULL;
6145
6146         /* Ignore if the device is blocked or hdev is suspended */
6147         if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6148             hdev->suspended)
6149                 return NULL;
6150
6151         /* Most controller will fail if we try to create new connections
6152          * while we have an existing one in peripheral role.
6153          */
6154         if (hdev->conn_hash.le_num_peripheral > 0 &&
6155             (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6156              !(hdev->le_states[3] & 0x10)))
6157                 return NULL;
6158
6159         /* If we're not connectable only connect devices that we have in
6160          * our pend_le_conns list.
6161          */
6162         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6163                                            addr_type);
6164         if (!params)
6165                 return NULL;
6166
6167         if (!params->explicit_connect) {
6168                 switch (params->auto_connect) {
6169                 case HCI_AUTO_CONN_DIRECT:
6170                         /* Only devices advertising with ADV_DIRECT_IND are
6171                          * triggering a connection attempt. This is allowing
6172                          * incoming connections from peripheral devices.
6173                          */
6174                         if (adv_type != LE_ADV_DIRECT_IND)
6175                                 return NULL;
6176                         break;
6177                 case HCI_AUTO_CONN_ALWAYS:
6178                         /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6179                          * are triggering a connection attempt. This means
6180                          * that incoming connections from peripheral device are
6181                          * accepted and also outgoing connections to peripheral
6182                          * devices are established when found.
6183                          */
6184                         break;
6185                 default:
6186                         return NULL;
6187                 }
6188         }
6189
6190         conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6191                               BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6192                               HCI_ROLE_MASTER);
6193         if (!IS_ERR(conn)) {
6194                 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6195                  * by higher layer that tried to connect, if no then
6196                  * store the pointer since we don't really have any
6197                  * other owner of the object besides the params that
6198                  * triggered it. This way we can abort the connection if
6199                  * the parameters get removed and keep the reference
6200                  * count consistent once the connection is established.
6201                  */
6202
6203                 if (!params->explicit_connect)
6204                         params->conn = hci_conn_get(conn);
6205
6206                 return conn;
6207         }
6208
6209         switch (PTR_ERR(conn)) {
6210         case -EBUSY:
6211                 /* If hci_connect() returns -EBUSY it means there is already
6212                  * an LE connection attempt going on. Since controllers don't
6213                  * support more than one connection attempt at the time, we
6214                  * don't consider this an error case.
6215                  */
6216                 break;
6217         default:
6218                 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6219                 return NULL;
6220         }
6221
6222         return NULL;
6223 }
6224
6225 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6226                                u8 bdaddr_type, bdaddr_t *direct_addr,
6227                                u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6228                                bool ext_adv, bool ctl_time, u64 instant)
6229 {
6230         struct discovery_state *d = &hdev->discovery;
6231         struct smp_irk *irk;
6232         struct hci_conn *conn;
6233         bool match, bdaddr_resolved;
6234         u32 flags;
6235         u8 *ptr;
6236
6237         switch (type) {
6238         case LE_ADV_IND:
6239         case LE_ADV_DIRECT_IND:
6240         case LE_ADV_SCAN_IND:
6241         case LE_ADV_NONCONN_IND:
6242         case LE_ADV_SCAN_RSP:
6243                 break;
6244         default:
6245                 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6246                                        "type: 0x%02x", type);
6247                 return;
6248         }
6249
6250         if (!ext_adv && len > HCI_MAX_AD_LENGTH) {
6251                 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes");
6252                 return;
6253         }
6254
6255         /* Find the end of the data in case the report contains padded zero
6256          * bytes at the end causing an invalid length value.
6257          *
6258          * When data is NULL, len is 0 so there is no need for extra ptr
6259          * check as 'ptr < data + 0' is already false in such case.
6260          */
6261         for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6262                 if (ptr + 1 + *ptr > data + len)
6263                         break;
6264         }
6265
6266         /* Adjust for actual length. This handles the case when remote
6267          * device is advertising with incorrect data length.
6268          */
6269         len = ptr - data;
6270
6271         /* If the direct address is present, then this report is from
6272          * a LE Direct Advertising Report event. In that case it is
6273          * important to see if the address is matching the local
6274          * controller address.
6275          */
6276         if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6277                 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6278                                                   &bdaddr_resolved);
6279
6280                 /* Only resolvable random addresses are valid for these
6281                  * kind of reports and others can be ignored.
6282                  */
6283                 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6284                         return;
6285
6286                 /* If the controller is not using resolvable random
6287                  * addresses, then this report can be ignored.
6288                  */
6289                 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6290                         return;
6291
6292                 /* If the local IRK of the controller does not match
6293                  * with the resolvable random address provided, then
6294                  * this report can be ignored.
6295                  */
6296                 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6297                         return;
6298         }
6299
6300         /* Check if we need to convert to identity address */
6301         irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6302         if (irk) {
6303                 bdaddr = &irk->bdaddr;
6304                 bdaddr_type = irk->addr_type;
6305         }
6306
6307         bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6308
6309         /* Check if we have been requested to connect to this device.
6310          *
6311          * direct_addr is set only for directed advertising reports (it is NULL
6312          * for advertising reports) and is already verified to be RPA above.
6313          */
6314         conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6315                                      type);
6316         if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) {
6317                 /* Store report for later inclusion by
6318                  * mgmt_device_connected
6319                  */
6320                 memcpy(conn->le_adv_data, data, len);
6321                 conn->le_adv_data_len = len;
6322         }
6323
6324         if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6325                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6326         else
6327                 flags = 0;
6328
6329         /* All scan results should be sent up for Mesh systems */
6330         if (hci_dev_test_flag(hdev, HCI_MESH)) {
6331                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6332                                   rssi, flags, data, len, NULL, 0, instant);
6333                 return;
6334         }
6335
6336         /* Passive scanning shouldn't trigger any device found events,
6337          * except for devices marked as CONN_REPORT for which we do send
6338          * device found events, or advertisement monitoring requested.
6339          */
6340         if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6341                 if (type == LE_ADV_DIRECT_IND)
6342                         return;
6343
6344                 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6345                                                bdaddr, bdaddr_type) &&
6346                     idr_is_empty(&hdev->adv_monitors_idr))
6347                         return;
6348
6349                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6350                                   rssi, flags, data, len, NULL, 0, 0);
6351                 return;
6352         }
6353
6354         /* When receiving a scan response, then there is no way to
6355          * know if the remote device is connectable or not. However
6356          * since scan responses are merged with a previously seen
6357          * advertising report, the flags field from that report
6358          * will be used.
6359          *
6360          * In the unlikely case that a controller just sends a scan
6361          * response event that doesn't match the pending report, then
6362          * it is marked as a standalone SCAN_RSP.
6363          */
6364         if (type == LE_ADV_SCAN_RSP)
6365                 flags = MGMT_DEV_FOUND_SCAN_RSP;
6366
6367         /* If there's nothing pending either store the data from this
6368          * event or send an immediate device found event if the data
6369          * should not be stored for later.
6370          */
6371         if (!ext_adv && !has_pending_adv_report(hdev)) {
6372                 /* If the report will trigger a SCAN_REQ store it for
6373                  * later merging.
6374                  */
6375                 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6376                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6377                                                  rssi, flags, data, len);
6378                         return;
6379                 }
6380
6381                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6382                                   rssi, flags, data, len, NULL, 0, 0);
6383                 return;
6384         }
6385
6386         /* Check if the pending report is for the same device as the new one */
6387         match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6388                  bdaddr_type == d->last_adv_addr_type);
6389
6390         /* If the pending data doesn't match this report or this isn't a
6391          * scan response (e.g. we got a duplicate ADV_IND) then force
6392          * sending of the pending data.
6393          */
6394         if (type != LE_ADV_SCAN_RSP || !match) {
6395                 /* Send out whatever is in the cache, but skip duplicates */
6396                 if (!match)
6397                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6398                                           d->last_adv_addr_type, NULL,
6399                                           d->last_adv_rssi, d->last_adv_flags,
6400                                           d->last_adv_data,
6401                                           d->last_adv_data_len, NULL, 0, 0);
6402
6403                 /* If the new report will trigger a SCAN_REQ store it for
6404                  * later merging.
6405                  */
6406                 if (!ext_adv && (type == LE_ADV_IND ||
6407                                  type == LE_ADV_SCAN_IND)) {
6408                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6409                                                  rssi, flags, data, len);
6410                         return;
6411                 }
6412
6413                 /* The advertising reports cannot be merged, so clear
6414                  * the pending report and send out a device found event.
6415                  */
6416                 clear_pending_adv_report(hdev);
6417                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6418                                   rssi, flags, data, len, NULL, 0, 0);
6419                 return;
6420         }
6421
6422         /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6423          * the new event is a SCAN_RSP. We can therefore proceed with
6424          * sending a merged device found event.
6425          */
6426         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6427                           d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6428                           d->last_adv_data, d->last_adv_data_len, data, len, 0);
6429         clear_pending_adv_report(hdev);
6430 }
6431
6432 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6433                                   struct sk_buff *skb)
6434 {
6435         struct hci_ev_le_advertising_report *ev = data;
6436         u64 instant = jiffies;
6437
6438         if (!ev->num)
6439                 return;
6440
6441         hci_dev_lock(hdev);
6442
6443         while (ev->num--) {
6444                 struct hci_ev_le_advertising_info *info;
6445                 s8 rssi;
6446
6447                 info = hci_le_ev_skb_pull(hdev, skb,
6448                                           HCI_EV_LE_ADVERTISING_REPORT,
6449                                           sizeof(*info));
6450                 if (!info)
6451                         break;
6452
6453                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6454                                         info->length + 1))
6455                         break;
6456
6457                 if (info->length <= HCI_MAX_AD_LENGTH) {
6458                         rssi = info->data[info->length];
6459                         process_adv_report(hdev, info->type, &info->bdaddr,
6460                                            info->bdaddr_type, NULL, 0, rssi,
6461                                            info->data, info->length, false,
6462                                            false, instant);
6463                 } else {
6464                         bt_dev_err(hdev, "Dropping invalid advertising data");
6465                 }
6466         }
6467
6468         hci_dev_unlock(hdev);
6469 }
6470
6471 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6472 {
6473         if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6474                 switch (evt_type) {
6475                 case LE_LEGACY_ADV_IND:
6476                         return LE_ADV_IND;
6477                 case LE_LEGACY_ADV_DIRECT_IND:
6478                         return LE_ADV_DIRECT_IND;
6479                 case LE_LEGACY_ADV_SCAN_IND:
6480                         return LE_ADV_SCAN_IND;
6481                 case LE_LEGACY_NONCONN_IND:
6482                         return LE_ADV_NONCONN_IND;
6483                 case LE_LEGACY_SCAN_RSP_ADV:
6484                 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6485                         return LE_ADV_SCAN_RSP;
6486                 }
6487
6488                 goto invalid;
6489         }
6490
6491         if (evt_type & LE_EXT_ADV_CONN_IND) {
6492                 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6493                         return LE_ADV_DIRECT_IND;
6494
6495                 return LE_ADV_IND;
6496         }
6497
6498         if (evt_type & LE_EXT_ADV_SCAN_RSP)
6499                 return LE_ADV_SCAN_RSP;
6500
6501         if (evt_type & LE_EXT_ADV_SCAN_IND)
6502                 return LE_ADV_SCAN_IND;
6503
6504         if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6505             evt_type & LE_EXT_ADV_DIRECT_IND)
6506                 return LE_ADV_NONCONN_IND;
6507
6508 invalid:
6509         bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6510                                evt_type);
6511
6512         return LE_ADV_INVALID;
6513 }
6514
6515 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6516                                       struct sk_buff *skb)
6517 {
6518         struct hci_ev_le_ext_adv_report *ev = data;
6519         u64 instant = jiffies;
6520
6521         if (!ev->num)
6522                 return;
6523
6524         hci_dev_lock(hdev);
6525
6526         while (ev->num--) {
6527                 struct hci_ev_le_ext_adv_info *info;
6528                 u8 legacy_evt_type;
6529                 u16 evt_type;
6530
6531                 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6532                                           sizeof(*info));
6533                 if (!info)
6534                         break;
6535
6536                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6537                                         info->length))
6538                         break;
6539
6540                 evt_type = __le16_to_cpu(info->type);
6541                 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6542                 if (legacy_evt_type != LE_ADV_INVALID) {
6543                         process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6544                                            info->bdaddr_type, NULL, 0,
6545                                            info->rssi, info->data, info->length,
6546                                            !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6547                                            false, instant);
6548                 }
6549         }
6550
6551         hci_dev_unlock(hdev);
6552 }
6553
6554 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6555 {
6556         struct hci_cp_le_pa_term_sync cp;
6557
6558         memset(&cp, 0, sizeof(cp));
6559         cp.handle = handle;
6560
6561         return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6562 }
6563
6564 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6565                                             struct sk_buff *skb)
6566 {
6567         struct hci_ev_le_pa_sync_established *ev = data;
6568         int mask = hdev->link_mode;
6569         __u8 flags = 0;
6570
6571         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6572
6573         if (ev->status)
6574                 return;
6575
6576         hci_dev_lock(hdev);
6577
6578         hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6579
6580         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6581         if (!(mask & HCI_LM_ACCEPT))
6582                 hci_le_pa_term_sync(hdev, ev->handle);
6583
6584         hci_dev_unlock(hdev);
6585 }
6586
6587 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6588                                             struct sk_buff *skb)
6589 {
6590         struct hci_ev_le_remote_feat_complete *ev = data;
6591         struct hci_conn *conn;
6592
6593         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6594
6595         hci_dev_lock(hdev);
6596
6597         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6598         if (conn) {
6599                 if (!ev->status)
6600                         memcpy(conn->features[0], ev->features, 8);
6601
6602                 if (conn->state == BT_CONFIG) {
6603                         __u8 status;
6604
6605                         /* If the local controller supports peripheral-initiated
6606                          * features exchange, but the remote controller does
6607                          * not, then it is possible that the error code 0x1a
6608                          * for unsupported remote feature gets returned.
6609                          *
6610                          * In this specific case, allow the connection to
6611                          * transition into connected state and mark it as
6612                          * successful.
6613                          */
6614                         if (!conn->out && ev->status == 0x1a &&
6615                             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6616                                 status = 0x00;
6617                         else
6618                                 status = ev->status;
6619
6620                         conn->state = BT_CONNECTED;
6621                         hci_connect_cfm(conn, status);
6622                         hci_conn_drop(conn);
6623                 }
6624         }
6625
6626         hci_dev_unlock(hdev);
6627 }
6628
6629 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6630                                    struct sk_buff *skb)
6631 {
6632         struct hci_ev_le_ltk_req *ev = data;
6633         struct hci_cp_le_ltk_reply cp;
6634         struct hci_cp_le_ltk_neg_reply neg;
6635         struct hci_conn *conn;
6636         struct smp_ltk *ltk;
6637
6638         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6639
6640         hci_dev_lock(hdev);
6641
6642         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6643         if (conn == NULL)
6644                 goto not_found;
6645
6646         ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6647         if (!ltk)
6648                 goto not_found;
6649
6650         if (smp_ltk_is_sc(ltk)) {
6651                 /* With SC both EDiv and Rand are set to zero */
6652                 if (ev->ediv || ev->rand)
6653                         goto not_found;
6654         } else {
6655                 /* For non-SC keys check that EDiv and Rand match */
6656                 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6657                         goto not_found;
6658         }
6659
6660         memcpy(cp.ltk, ltk->val, ltk->enc_size);
6661         memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6662         cp.handle = cpu_to_le16(conn->handle);
6663
6664         conn->pending_sec_level = smp_ltk_sec_level(ltk);
6665
6666         conn->enc_key_size = ltk->enc_size;
6667
6668         hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6669
6670         /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6671          * temporary key used to encrypt a connection following
6672          * pairing. It is used during the Encrypted Session Setup to
6673          * distribute the keys. Later, security can be re-established
6674          * using a distributed LTK.
6675          */
6676         if (ltk->type == SMP_STK) {
6677                 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6678                 list_del_rcu(&ltk->list);
6679                 kfree_rcu(ltk, rcu);
6680         } else {
6681                 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6682         }
6683
6684         hci_dev_unlock(hdev);
6685
6686         return;
6687
6688 not_found:
6689         neg.handle = ev->handle;
6690         hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6691         hci_dev_unlock(hdev);
6692 }
6693
6694 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6695                                       u8 reason)
6696 {
6697         struct hci_cp_le_conn_param_req_neg_reply cp;
6698
6699         cp.handle = cpu_to_le16(handle);
6700         cp.reason = reason;
6701
6702         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6703                      &cp);
6704 }
6705
6706 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6707                                              struct sk_buff *skb)
6708 {
6709         struct hci_ev_le_remote_conn_param_req *ev = data;
6710         struct hci_cp_le_conn_param_req_reply cp;
6711         struct hci_conn *hcon;
6712         u16 handle, min, max, latency, timeout;
6713
6714         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6715
6716         handle = le16_to_cpu(ev->handle);
6717         min = le16_to_cpu(ev->interval_min);
6718         max = le16_to_cpu(ev->interval_max);
6719         latency = le16_to_cpu(ev->latency);
6720         timeout = le16_to_cpu(ev->timeout);
6721
6722         hcon = hci_conn_hash_lookup_handle(hdev, handle);
6723         if (!hcon || hcon->state != BT_CONNECTED)
6724                 return send_conn_param_neg_reply(hdev, handle,
6725                                                  HCI_ERROR_UNKNOWN_CONN_ID);
6726
6727         if (hci_check_conn_params(min, max, latency, timeout))
6728                 return send_conn_param_neg_reply(hdev, handle,
6729                                                  HCI_ERROR_INVALID_LL_PARAMS);
6730
6731         if (hcon->role == HCI_ROLE_MASTER) {
6732                 struct hci_conn_params *params;
6733                 u8 store_hint;
6734
6735                 hci_dev_lock(hdev);
6736
6737                 params = hci_conn_params_lookup(hdev, &hcon->dst,
6738                                                 hcon->dst_type);
6739                 if (params) {
6740                         params->conn_min_interval = min;
6741                         params->conn_max_interval = max;
6742                         params->conn_latency = latency;
6743                         params->supervision_timeout = timeout;
6744                         store_hint = 0x01;
6745                 } else {
6746                         store_hint = 0x00;
6747                 }
6748
6749                 hci_dev_unlock(hdev);
6750
6751                 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6752                                     store_hint, min, max, latency, timeout);
6753         }
6754
6755         cp.handle = ev->handle;
6756         cp.interval_min = ev->interval_min;
6757         cp.interval_max = ev->interval_max;
6758         cp.latency = ev->latency;
6759         cp.timeout = ev->timeout;
6760         cp.min_ce_len = 0;
6761         cp.max_ce_len = 0;
6762
6763         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6764 }
6765
6766 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6767                                          struct sk_buff *skb)
6768 {
6769         struct hci_ev_le_direct_adv_report *ev = data;
6770         u64 instant = jiffies;
6771         int i;
6772
6773         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6774                                 flex_array_size(ev, info, ev->num)))
6775                 return;
6776
6777         if (!ev->num)
6778                 return;
6779
6780         hci_dev_lock(hdev);
6781
6782         for (i = 0; i < ev->num; i++) {
6783                 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6784
6785                 process_adv_report(hdev, info->type, &info->bdaddr,
6786                                    info->bdaddr_type, &info->direct_addr,
6787                                    info->direct_addr_type, info->rssi, NULL, 0,
6788                                    false, false, instant);
6789         }
6790
6791         hci_dev_unlock(hdev);
6792 }
6793
6794 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6795                                   struct sk_buff *skb)
6796 {
6797         struct hci_ev_le_phy_update_complete *ev = data;
6798         struct hci_conn *conn;
6799
6800         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6801
6802         if (ev->status)
6803                 return;
6804
6805         hci_dev_lock(hdev);
6806
6807         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6808         if (!conn)
6809                 goto unlock;
6810
6811         conn->le_tx_phy = ev->tx_phy;
6812         conn->le_rx_phy = ev->rx_phy;
6813
6814 unlock:
6815         hci_dev_unlock(hdev);
6816 }
6817
6818 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
6819                                         struct sk_buff *skb)
6820 {
6821         struct hci_evt_le_cis_established *ev = data;
6822         struct hci_conn *conn;
6823         u16 handle = __le16_to_cpu(ev->handle);
6824
6825         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6826
6827         hci_dev_lock(hdev);
6828
6829         conn = hci_conn_hash_lookup_handle(hdev, handle);
6830         if (!conn) {
6831                 bt_dev_err(hdev,
6832                            "Unable to find connection with handle 0x%4.4x",
6833                            handle);
6834                 goto unlock;
6835         }
6836
6837         if (conn->type != ISO_LINK) {
6838                 bt_dev_err(hdev,
6839                            "Invalid connection link type handle 0x%4.4x",
6840                            handle);
6841                 goto unlock;
6842         }
6843
6844         if (conn->role == HCI_ROLE_SLAVE) {
6845                 __le32 interval;
6846
6847                 memset(&interval, 0, sizeof(interval));
6848
6849                 memcpy(&interval, ev->c_latency, sizeof(ev->c_latency));
6850                 conn->iso_qos.in.interval = le32_to_cpu(interval);
6851                 memcpy(&interval, ev->p_latency, sizeof(ev->p_latency));
6852                 conn->iso_qos.out.interval = le32_to_cpu(interval);
6853                 conn->iso_qos.in.latency = le16_to_cpu(ev->interval);
6854                 conn->iso_qos.out.latency = le16_to_cpu(ev->interval);
6855                 conn->iso_qos.in.sdu = le16_to_cpu(ev->c_mtu);
6856                 conn->iso_qos.out.sdu = le16_to_cpu(ev->p_mtu);
6857                 conn->iso_qos.in.phy = ev->c_phy;
6858                 conn->iso_qos.out.phy = ev->p_phy;
6859         }
6860
6861         if (!ev->status) {
6862                 conn->state = BT_CONNECTED;
6863                 hci_debugfs_create_conn(conn);
6864                 hci_conn_add_sysfs(conn);
6865                 hci_iso_setup_path(conn);
6866                 goto unlock;
6867         }
6868
6869         hci_connect_cfm(conn, ev->status);
6870         hci_conn_del(conn);
6871
6872 unlock:
6873         hci_dev_unlock(hdev);
6874 }
6875
6876 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
6877 {
6878         struct hci_cp_le_reject_cis cp;
6879
6880         memset(&cp, 0, sizeof(cp));
6881         cp.handle = handle;
6882         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
6883         hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
6884 }
6885
6886 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
6887 {
6888         struct hci_cp_le_accept_cis cp;
6889
6890         memset(&cp, 0, sizeof(cp));
6891         cp.handle = handle;
6892         hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
6893 }
6894
6895 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
6896                                struct sk_buff *skb)
6897 {
6898         struct hci_evt_le_cis_req *ev = data;
6899         u16 acl_handle, cis_handle;
6900         struct hci_conn *acl, *cis;
6901         int mask;
6902         __u8 flags = 0;
6903
6904         acl_handle = __le16_to_cpu(ev->acl_handle);
6905         cis_handle = __le16_to_cpu(ev->cis_handle);
6906
6907         bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
6908                    acl_handle, cis_handle, ev->cig_id, ev->cis_id);
6909
6910         hci_dev_lock(hdev);
6911
6912         acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
6913         if (!acl)
6914                 goto unlock;
6915
6916         mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
6917         if (!(mask & HCI_LM_ACCEPT)) {
6918                 hci_le_reject_cis(hdev, ev->cis_handle);
6919                 goto unlock;
6920         }
6921
6922         cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
6923         if (!cis) {
6924                 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE);
6925                 if (!cis) {
6926                         hci_le_reject_cis(hdev, ev->cis_handle);
6927                         goto unlock;
6928                 }
6929                 cis->handle = cis_handle;
6930         }
6931
6932         cis->iso_qos.cig = ev->cig_id;
6933         cis->iso_qos.cis = ev->cis_id;
6934
6935         if (!(flags & HCI_PROTO_DEFER)) {
6936                 hci_le_accept_cis(hdev, ev->cis_handle);
6937         } else {
6938                 cis->state = BT_CONNECT2;
6939                 hci_connect_cfm(cis, 0);
6940         }
6941
6942 unlock:
6943         hci_dev_unlock(hdev);
6944 }
6945
6946 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
6947                                            struct sk_buff *skb)
6948 {
6949         struct hci_evt_le_create_big_complete *ev = data;
6950         struct hci_conn *conn;
6951
6952         BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
6953
6954         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
6955                                 flex_array_size(ev, bis_handle, ev->num_bis)))
6956                 return;
6957
6958         hci_dev_lock(hdev);
6959
6960         conn = hci_conn_hash_lookup_big(hdev, ev->handle);
6961         if (!conn)
6962                 goto unlock;
6963
6964         if (conn->type != ISO_LINK) {
6965                 bt_dev_err(hdev,
6966                            "Invalid connection link type handle 0x%2.2x",
6967                            ev->handle);
6968                 goto unlock;
6969         }
6970
6971         if (ev->num_bis)
6972                 conn->handle = __le16_to_cpu(ev->bis_handle[0]);
6973
6974         if (!ev->status) {
6975                 conn->state = BT_CONNECTED;
6976                 hci_debugfs_create_conn(conn);
6977                 hci_conn_add_sysfs(conn);
6978                 hci_iso_setup_path(conn);
6979                 goto unlock;
6980         }
6981
6982         hci_connect_cfm(conn, ev->status);
6983         hci_conn_del(conn);
6984
6985 unlock:
6986         hci_dev_unlock(hdev);
6987 }
6988
6989 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
6990                                             struct sk_buff *skb)
6991 {
6992         struct hci_evt_le_big_sync_estabilished *ev = data;
6993         struct hci_conn *bis;
6994         int i;
6995
6996         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6997
6998         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
6999                                 flex_array_size(ev, bis, ev->num_bis)))
7000                 return;
7001
7002         if (ev->status)
7003                 return;
7004
7005         hci_dev_lock(hdev);
7006
7007         for (i = 0; i < ev->num_bis; i++) {
7008                 u16 handle = le16_to_cpu(ev->bis[i]);
7009                 __le32 interval;
7010
7011                 bis = hci_conn_hash_lookup_handle(hdev, handle);
7012                 if (!bis) {
7013                         bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
7014                                            HCI_ROLE_SLAVE);
7015                         if (!bis)
7016                                 continue;
7017                         bis->handle = handle;
7018                 }
7019
7020                 bis->iso_qos.big = ev->handle;
7021                 memset(&interval, 0, sizeof(interval));
7022                 memcpy(&interval, ev->latency, sizeof(ev->latency));
7023                 bis->iso_qos.in.interval = le32_to_cpu(interval);
7024                 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7025                 bis->iso_qos.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7026                 bis->iso_qos.in.sdu = le16_to_cpu(ev->max_pdu);
7027
7028                 hci_iso_setup_path(bis);
7029         }
7030
7031         hci_dev_unlock(hdev);
7032 }
7033
7034 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7035                                            struct sk_buff *skb)
7036 {
7037         struct hci_evt_le_big_info_adv_report *ev = data;
7038         int mask = hdev->link_mode;
7039         __u8 flags = 0;
7040
7041         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7042
7043         hci_dev_lock(hdev);
7044
7045         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7046         if (!(mask & HCI_LM_ACCEPT))
7047                 hci_le_pa_term_sync(hdev, ev->sync_handle);
7048
7049         hci_dev_unlock(hdev);
7050 }
7051
7052 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7053 [_op] = { \
7054         .func = _func, \
7055         .min_len = _min_len, \
7056         .max_len = _max_len, \
7057 }
7058
7059 #define HCI_LE_EV(_op, _func, _len) \
7060         HCI_LE_EV_VL(_op, _func, _len, _len)
7061
7062 #define HCI_LE_EV_STATUS(_op, _func) \
7063         HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7064
7065 /* Entries in this table shall have their position according to the subevent
7066  * opcode they handle so the use of the macros above is recommend since it does
7067  * attempt to initialize at its proper index using Designated Initializers that
7068  * way events without a callback function can be ommited.
7069  */
7070 static const struct hci_le_ev {
7071         void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7072         u16  min_len;
7073         u16  max_len;
7074 } hci_le_ev_table[U8_MAX + 1] = {
7075         /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7076         HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7077                   sizeof(struct hci_ev_le_conn_complete)),
7078         /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7079         HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7080                      sizeof(struct hci_ev_le_advertising_report),
7081                      HCI_MAX_EVENT_SIZE),
7082         /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7083         HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7084                   hci_le_conn_update_complete_evt,
7085                   sizeof(struct hci_ev_le_conn_update_complete)),
7086         /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7087         HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7088                   hci_le_remote_feat_complete_evt,
7089                   sizeof(struct hci_ev_le_remote_feat_complete)),
7090         /* [0x05 = HCI_EV_LE_LTK_REQ] */
7091         HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7092                   sizeof(struct hci_ev_le_ltk_req)),
7093         /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7094         HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7095                   hci_le_remote_conn_param_req_evt,
7096                   sizeof(struct hci_ev_le_remote_conn_param_req)),
7097         /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7098         HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7099                   hci_le_enh_conn_complete_evt,
7100                   sizeof(struct hci_ev_le_enh_conn_complete)),
7101         /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7102         HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7103                      sizeof(struct hci_ev_le_direct_adv_report),
7104                      HCI_MAX_EVENT_SIZE),
7105         /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7106         HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7107                   sizeof(struct hci_ev_le_phy_update_complete)),
7108         /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7109         HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7110                      sizeof(struct hci_ev_le_ext_adv_report),
7111                      HCI_MAX_EVENT_SIZE),
7112         /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7113         HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7114                   hci_le_pa_sync_estabilished_evt,
7115                   sizeof(struct hci_ev_le_pa_sync_established)),
7116         /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7117         HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7118                   sizeof(struct hci_evt_le_ext_adv_set_term)),
7119         /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7120         HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7121                   sizeof(struct hci_evt_le_cis_established)),
7122         /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7123         HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7124                   sizeof(struct hci_evt_le_cis_req)),
7125         /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7126         HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7127                      hci_le_create_big_complete_evt,
7128                      sizeof(struct hci_evt_le_create_big_complete),
7129                      HCI_MAX_EVENT_SIZE),
7130         /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7131         HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7132                      hci_le_big_sync_established_evt,
7133                      sizeof(struct hci_evt_le_big_sync_estabilished),
7134                      HCI_MAX_EVENT_SIZE),
7135         /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7136         HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7137                      hci_le_big_info_adv_report_evt,
7138                      sizeof(struct hci_evt_le_big_info_adv_report),
7139                      HCI_MAX_EVENT_SIZE),
7140 };
7141
7142 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7143                             struct sk_buff *skb, u16 *opcode, u8 *status,
7144                             hci_req_complete_t *req_complete,
7145                             hci_req_complete_skb_t *req_complete_skb)
7146 {
7147         struct hci_ev_le_meta *ev = data;
7148         const struct hci_le_ev *subev;
7149
7150         bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7151
7152         /* Only match event if command OGF is for LE */
7153         if (hdev->sent_cmd &&
7154             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7155             hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7156                 *opcode = hci_skb_opcode(hdev->sent_cmd);
7157                 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7158                                      req_complete_skb);
7159         }
7160
7161         subev = &hci_le_ev_table[ev->subevent];
7162         if (!subev->func)
7163                 return;
7164
7165         if (skb->len < subev->min_len) {
7166                 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7167                            ev->subevent, skb->len, subev->min_len);
7168                 return;
7169         }
7170
7171         /* Just warn if the length is over max_len size it still be
7172          * possible to partially parse the event so leave to callback to
7173          * decide if that is acceptable.
7174          */
7175         if (skb->len > subev->max_len)
7176                 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7177                             ev->subevent, skb->len, subev->max_len);
7178         data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7179         if (!data)
7180                 return;
7181
7182         subev->func(hdev, data, skb);
7183 }
7184
7185 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7186                                  u8 event, struct sk_buff *skb)
7187 {
7188         struct hci_ev_cmd_complete *ev;
7189         struct hci_event_hdr *hdr;
7190
7191         if (!skb)
7192                 return false;
7193
7194         hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7195         if (!hdr)
7196                 return false;
7197
7198         if (event) {
7199                 if (hdr->evt != event)
7200                         return false;
7201                 return true;
7202         }
7203
7204         /* Check if request ended in Command Status - no way to retrieve
7205          * any extra parameters in this case.
7206          */
7207         if (hdr->evt == HCI_EV_CMD_STATUS)
7208                 return false;
7209
7210         if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7211                 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7212                            hdr->evt);
7213                 return false;
7214         }
7215
7216         ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7217         if (!ev)
7218                 return false;
7219
7220         if (opcode != __le16_to_cpu(ev->opcode)) {
7221                 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7222                        __le16_to_cpu(ev->opcode));
7223                 return false;
7224         }
7225
7226         return true;
7227 }
7228
7229 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7230                                   struct sk_buff *skb)
7231 {
7232         struct hci_ev_le_advertising_info *adv;
7233         struct hci_ev_le_direct_adv_info *direct_adv;
7234         struct hci_ev_le_ext_adv_info *ext_adv;
7235         const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7236         const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7237
7238         hci_dev_lock(hdev);
7239
7240         /* If we are currently suspended and this is the first BT event seen,
7241          * save the wake reason associated with the event.
7242          */
7243         if (!hdev->suspended || hdev->wake_reason)
7244                 goto unlock;
7245
7246         /* Default to remote wake. Values for wake_reason are documented in the
7247          * Bluez mgmt api docs.
7248          */
7249         hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7250
7251         /* Once configured for remote wakeup, we should only wake up for
7252          * reconnections. It's useful to see which device is waking us up so
7253          * keep track of the bdaddr of the connection event that woke us up.
7254          */
7255         if (event == HCI_EV_CONN_REQUEST) {
7256                 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7257                 hdev->wake_addr_type = BDADDR_BREDR;
7258         } else if (event == HCI_EV_CONN_COMPLETE) {
7259                 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7260                 hdev->wake_addr_type = BDADDR_BREDR;
7261         } else if (event == HCI_EV_LE_META) {
7262                 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7263                 u8 subevent = le_ev->subevent;
7264                 u8 *ptr = &skb->data[sizeof(*le_ev)];
7265                 u8 num_reports = *ptr;
7266
7267                 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7268                      subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7269                      subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7270                     num_reports) {
7271                         adv = (void *)(ptr + 1);
7272                         direct_adv = (void *)(ptr + 1);
7273                         ext_adv = (void *)(ptr + 1);
7274
7275                         switch (subevent) {
7276                         case HCI_EV_LE_ADVERTISING_REPORT:
7277                                 bacpy(&hdev->wake_addr, &adv->bdaddr);
7278                                 hdev->wake_addr_type = adv->bdaddr_type;
7279                                 break;
7280                         case HCI_EV_LE_DIRECT_ADV_REPORT:
7281                                 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7282                                 hdev->wake_addr_type = direct_adv->bdaddr_type;
7283                                 break;
7284                         case HCI_EV_LE_EXT_ADV_REPORT:
7285                                 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7286                                 hdev->wake_addr_type = ext_adv->bdaddr_type;
7287                                 break;
7288                         }
7289                 }
7290         } else {
7291                 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7292         }
7293
7294 unlock:
7295         hci_dev_unlock(hdev);
7296 }
7297
7298 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7299 [_op] = { \
7300         .req = false, \
7301         .func = _func, \
7302         .min_len = _min_len, \
7303         .max_len = _max_len, \
7304 }
7305
7306 #define HCI_EV(_op, _func, _len) \
7307         HCI_EV_VL(_op, _func, _len, _len)
7308
7309 #define HCI_EV_STATUS(_op, _func) \
7310         HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7311
7312 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7313 [_op] = { \
7314         .req = true, \
7315         .func_req = _func, \
7316         .min_len = _min_len, \
7317         .max_len = _max_len, \
7318 }
7319
7320 #define HCI_EV_REQ(_op, _func, _len) \
7321         HCI_EV_REQ_VL(_op, _func, _len, _len)
7322
7323 /* Entries in this table shall have their position according to the event opcode
7324  * they handle so the use of the macros above is recommend since it does attempt
7325  * to initialize at its proper index using Designated Initializers that way
7326  * events without a callback function don't have entered.
7327  */
7328 static const struct hci_ev {
7329         bool req;
7330         union {
7331                 void (*func)(struct hci_dev *hdev, void *data,
7332                              struct sk_buff *skb);
7333                 void (*func_req)(struct hci_dev *hdev, void *data,
7334                                  struct sk_buff *skb, u16 *opcode, u8 *status,
7335                                  hci_req_complete_t *req_complete,
7336                                  hci_req_complete_skb_t *req_complete_skb);
7337         };
7338         u16  min_len;
7339         u16  max_len;
7340 } hci_ev_table[U8_MAX + 1] = {
7341         /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7342         HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7343         /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7344         HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7345                   sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7346         /* [0x03 = HCI_EV_CONN_COMPLETE] */
7347         HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7348                sizeof(struct hci_ev_conn_complete)),
7349         /* [0x04 = HCI_EV_CONN_REQUEST] */
7350         HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7351                sizeof(struct hci_ev_conn_request)),
7352         /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7353         HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7354                sizeof(struct hci_ev_disconn_complete)),
7355         /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7356         HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7357                sizeof(struct hci_ev_auth_complete)),
7358         /* [0x07 = HCI_EV_REMOTE_NAME] */
7359         HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7360                sizeof(struct hci_ev_remote_name)),
7361         /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7362         HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7363                sizeof(struct hci_ev_encrypt_change)),
7364         /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7365         HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7366                hci_change_link_key_complete_evt,
7367                sizeof(struct hci_ev_change_link_key_complete)),
7368         /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7369         HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7370                sizeof(struct hci_ev_remote_features)),
7371         /* [0x0e = HCI_EV_CMD_COMPLETE] */
7372         HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7373                       sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7374         /* [0x0f = HCI_EV_CMD_STATUS] */
7375         HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7376                    sizeof(struct hci_ev_cmd_status)),
7377         /* [0x10 = HCI_EV_CMD_STATUS] */
7378         HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7379                sizeof(struct hci_ev_hardware_error)),
7380         /* [0x12 = HCI_EV_ROLE_CHANGE] */
7381         HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7382                sizeof(struct hci_ev_role_change)),
7383         /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7384         HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7385                   sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7386         /* [0x14 = HCI_EV_MODE_CHANGE] */
7387         HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7388                sizeof(struct hci_ev_mode_change)),
7389         /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7390         HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7391                sizeof(struct hci_ev_pin_code_req)),
7392         /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7393         HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7394                sizeof(struct hci_ev_link_key_req)),
7395         /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7396         HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7397                sizeof(struct hci_ev_link_key_notify)),
7398         /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7399         HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7400                sizeof(struct hci_ev_clock_offset)),
7401         /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7402         HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7403                sizeof(struct hci_ev_pkt_type_change)),
7404         /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7405         HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7406                sizeof(struct hci_ev_pscan_rep_mode)),
7407         /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7408         HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7409                   hci_inquiry_result_with_rssi_evt,
7410                   sizeof(struct hci_ev_inquiry_result_rssi),
7411                   HCI_MAX_EVENT_SIZE),
7412         /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7413         HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7414                sizeof(struct hci_ev_remote_ext_features)),
7415         /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7416         HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7417                sizeof(struct hci_ev_sync_conn_complete)),
7418         /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7419         HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7420                   hci_extended_inquiry_result_evt,
7421                   sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7422         /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7423         HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7424                sizeof(struct hci_ev_key_refresh_complete)),
7425         /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7426         HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7427                sizeof(struct hci_ev_io_capa_request)),
7428         /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7429         HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7430                sizeof(struct hci_ev_io_capa_reply)),
7431         /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7432         HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7433                sizeof(struct hci_ev_user_confirm_req)),
7434         /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7435         HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7436                sizeof(struct hci_ev_user_passkey_req)),
7437         /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7438         HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7439                sizeof(struct hci_ev_remote_oob_data_request)),
7440         /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7441         HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7442                sizeof(struct hci_ev_simple_pair_complete)),
7443         /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7444         HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7445                sizeof(struct hci_ev_user_passkey_notify)),
7446         /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7447         HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7448                sizeof(struct hci_ev_keypress_notify)),
7449         /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7450         HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7451                sizeof(struct hci_ev_remote_host_features)),
7452         /* [0x3e = HCI_EV_LE_META] */
7453         HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7454                       sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7455 #if IS_ENABLED(CONFIG_BT_HS)
7456         /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7457         HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7458                sizeof(struct hci_ev_phy_link_complete)),
7459         /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7460         HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7461                sizeof(struct hci_ev_channel_selected)),
7462         /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7463         HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7464                hci_disconn_loglink_complete_evt,
7465                sizeof(struct hci_ev_disconn_logical_link_complete)),
7466         /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7467         HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7468                sizeof(struct hci_ev_logical_link_complete)),
7469         /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7470         HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7471                hci_disconn_phylink_complete_evt,
7472                sizeof(struct hci_ev_disconn_phy_link_complete)),
7473 #endif
7474         /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7475         HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7476                sizeof(struct hci_ev_num_comp_blocks)),
7477         /* [0xff = HCI_EV_VENDOR] */
7478         HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7479 };
7480
7481 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7482                            u16 *opcode, u8 *status,
7483                            hci_req_complete_t *req_complete,
7484                            hci_req_complete_skb_t *req_complete_skb)
7485 {
7486         const struct hci_ev *ev = &hci_ev_table[event];
7487         void *data;
7488
7489         if (!ev->func)
7490                 return;
7491
7492         if (skb->len < ev->min_len) {
7493                 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7494                            event, skb->len, ev->min_len);
7495                 return;
7496         }
7497
7498         /* Just warn if the length is over max_len size it still be
7499          * possible to partially parse the event so leave to callback to
7500          * decide if that is acceptable.
7501          */
7502         if (skb->len > ev->max_len)
7503                 bt_dev_warn_ratelimited(hdev,
7504                                         "unexpected event 0x%2.2x length: %u > %u",
7505                                         event, skb->len, ev->max_len);
7506
7507         data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7508         if (!data)
7509                 return;
7510
7511         if (ev->req)
7512                 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7513                              req_complete_skb);
7514         else
7515                 ev->func(hdev, data, skb);
7516 }
7517
7518 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7519 {
7520         struct hci_event_hdr *hdr = (void *) skb->data;
7521         hci_req_complete_t req_complete = NULL;
7522         hci_req_complete_skb_t req_complete_skb = NULL;
7523         struct sk_buff *orig_skb = NULL;
7524         u8 status = 0, event, req_evt = 0;
7525         u16 opcode = HCI_OP_NOP;
7526
7527         if (skb->len < sizeof(*hdr)) {
7528                 bt_dev_err(hdev, "Malformed HCI Event");
7529                 goto done;
7530         }
7531
7532         kfree_skb(hdev->recv_event);
7533         hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7534
7535         event = hdr->evt;
7536         if (!event) {
7537                 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7538                             event);
7539                 goto done;
7540         }
7541
7542         /* Only match event if command OGF is not for LE */
7543         if (hdev->sent_cmd &&
7544             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7545             hci_skb_event(hdev->sent_cmd) == event) {
7546                 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7547                                      status, &req_complete, &req_complete_skb);
7548                 req_evt = event;
7549         }
7550
7551         /* If it looks like we might end up having to call
7552          * req_complete_skb, store a pristine copy of the skb since the
7553          * various handlers may modify the original one through
7554          * skb_pull() calls, etc.
7555          */
7556         if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7557             event == HCI_EV_CMD_COMPLETE)
7558                 orig_skb = skb_clone(skb, GFP_KERNEL);
7559
7560         skb_pull(skb, HCI_EVENT_HDR_SIZE);
7561
7562         /* Store wake reason if we're suspended */
7563         hci_store_wake_reason(hdev, event, skb);
7564
7565         bt_dev_dbg(hdev, "event 0x%2.2x", event);
7566
7567         hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7568                        &req_complete_skb);
7569
7570         if (req_complete) {
7571                 req_complete(hdev, status, opcode);
7572         } else if (req_complete_skb) {
7573                 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7574                         kfree_skb(orig_skb);
7575                         orig_skb = NULL;
7576                 }
7577                 req_complete_skb(hdev, status, opcode, orig_skb);
7578         }
7579
7580 done:
7581         kfree_skb(orig_skb);
7582         kfree_skb(skb);
7583         hdev->stat.evt_rx++;
7584 }