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    Copyright 2023 NXP
   5
   6    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License version 2 as
  10    published by the Free Software Foundation;
  11
  12    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  13    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  14    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  15    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  16    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  17    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  18    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  19    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  20
  21    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  22    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  23    SOFTWARE IS DISCLAIMED.
  24 */
  25
  26 /* Bluetooth HCI event handling. */
  27
  28 #include <asm/unaligned.h>
  29 #include <linux/crypto.h>
  30 #include <crypto/algapi.h>
  31
  32 #include <net/bluetooth/bluetooth.h>
  33 #include <net/bluetooth/hci_core.h>
  34 #include <net/bluetooth/mgmt.h>
  35
  36 #include "hci_request.h"
  37 #include "hci_debugfs.h"
  38 #include "hci_codec.h"
  39 #include "a2mp.h"
  40 #include "amp.h"
  41 #include "smp.h"
  42 #include "msft.h"
  43 #include "eir.h"
  44
  45 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
  46                  "\x00\x00\x00\x00\x00\x00\x00\x00"
  47
  48 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000)
  49
  50 /* Handle HCI Event packets */
  51
  52 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  53                              u8 ev, size_t len)
  54 {
  55         void *data;
  56
  57         data = skb_pull_data(skb, len);
  58         if (!data)
  59                 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev);
  60
  61         return data;
  62 }
  63
  64 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  65                              u16 op, size_t len)
  66 {
  67         void *data;
  68
  69         data = skb_pull_data(skb, len);
  70         if (!data)
  71                 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op);
  72
  73         return data;
  74 }
  75
  76 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  77                                 u8 ev, size_t len)
  78 {
  79         void *data;
  80
  81         data = skb_pull_data(skb, len);
  82         if (!data)
  83                 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev);
  84
  85         return data;
  86 }
  87
  88 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data,
  89                                 struct sk_buff *skb)
  90 {
  91         struct hci_ev_status *rp = data;
  92
  93         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
  94
  95         /* It is possible that we receive Inquiry Complete event right
  96          * before we receive Inquiry Cancel Command Complete event, in
  97          * which case the latter event should have status of Command
  98          * Disallowed (0x0c). This should not be treated as error, since
  99          * we actually achieve what Inquiry Cancel wants to achieve,
 100          * which is to end the last Inquiry session.
 101          */
 102         if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) {
 103                 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command");
 104                 rp->status = 0x00;
 105         }
 106
 107         if (rp->status)
 108                 return rp->status;
 109
 110         clear_bit(HCI_INQUIRY, &hdev->flags);
 111         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
 112         wake_up_bit(&hdev->flags, HCI_INQUIRY);
 113
 114         hci_dev_lock(hdev);
 115         /* Set discovery state to stopped if we're not doing LE active
 116          * scanning.
 117          */
 118         if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
 119             hdev->le_scan_type != LE_SCAN_ACTIVE)
 120                 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
 121         hci_dev_unlock(hdev);
 122
 123         hci_conn_check_pending(hdev);
 124
 125         return rp->status;
 126 }
 127
 128 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data,
 129                               struct sk_buff *skb)
 130 {
 131         struct hci_ev_status *rp = data;
 132
 133         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 134
 135         if (rp->status)
 136                 return rp->status;
 137
 138         hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
 139
 140         return rp->status;
 141 }
 142
 143 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data,
 144                                    struct sk_buff *skb)
 145 {
 146         struct hci_ev_status *rp = data;
 147
 148         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 149
 150         if (rp->status)
 151                 return rp->status;
 152
 153         hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
 154
 155         hci_conn_check_pending(hdev);
 156
 157         return rp->status;
 158 }
 159
 160 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data,
 161                                         struct sk_buff *skb)
 162 {
 163         struct hci_ev_status *rp = data;
 164
 165         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 166
 167         return rp->status;
 168 }
 169
 170 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data,
 171                                 struct sk_buff *skb)
 172 {
 173         struct hci_rp_role_discovery *rp = data;
 174         struct hci_conn *conn;
 175
 176         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 177
 178         if (rp->status)
 179                 return rp->status;
 180
 181         hci_dev_lock(hdev);
 182
 183         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 184         if (conn)
 185                 conn->role = rp->role;
 186
 187         hci_dev_unlock(hdev);
 188
 189         return rp->status;
 190 }
 191
 192 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data,
 193                                   struct sk_buff *skb)
 194 {
 195         struct hci_rp_read_link_policy *rp = data;
 196         struct hci_conn *conn;
 197
 198         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 199
 200         if (rp->status)
 201                 return rp->status;
 202
 203         hci_dev_lock(hdev);
 204
 205         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 206         if (conn)
 207                 conn->link_policy = __le16_to_cpu(rp->policy);
 208
 209         hci_dev_unlock(hdev);
 210
 211         return rp->status;
 212 }
 213
 214 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data,
 215                                    struct sk_buff *skb)
 216 {
 217         struct hci_rp_write_link_policy *rp = data;
 218         struct hci_conn *conn;
 219         void *sent;
 220
 221         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 222
 223         if (rp->status)
 224                 return rp->status;
 225
 226         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
 227         if (!sent)
 228                 return rp->status;
 229
 230         hci_dev_lock(hdev);
 231
 232         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 233         if (conn)
 234                 conn->link_policy = get_unaligned_le16(sent + 2);
 235
 236         hci_dev_unlock(hdev);
 237
 238         return rp->status;
 239 }
 240
 241 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data,
 242                                       struct sk_buff *skb)
 243 {
 244         struct hci_rp_read_def_link_policy *rp = data;
 245
 246         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 247
 248         if (rp->status)
 249                 return rp->status;
 250
 251         hdev->link_policy = __le16_to_cpu(rp->policy);
 252
 253         return rp->status;
 254 }
 255
 256 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data,
 257                                        struct sk_buff *skb)
 258 {
 259         struct hci_ev_status *rp = data;
 260         void *sent;
 261
 262         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 263
 264         if (rp->status)
 265                 return rp->status;
 266
 267         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
 268         if (!sent)
 269                 return rp->status;
 270
 271         hdev->link_policy = get_unaligned_le16(sent);
 272
 273         return rp->status;
 274 }
 275
 276 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb)
 277 {
 278         struct hci_ev_status *rp = data;
 279
 280         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 281
 282         clear_bit(HCI_RESET, &hdev->flags);
 283
 284         if (rp->status)
 285                 return rp->status;
 286
 287         /* Reset all non-persistent flags */
 288         hci_dev_clear_volatile_flags(hdev);
 289
 290         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
 291
 292         hdev->inq_tx_power = HCI_TX_POWER_INVALID;
 293         hdev->adv_tx_power = HCI_TX_POWER_INVALID;
 294
 295         memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
 296         hdev->adv_data_len = 0;
 297
 298         memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
 299         hdev->scan_rsp_data_len = 0;
 300
 301         hdev->le_scan_type = LE_SCAN_PASSIVE;
 302
 303         hdev->ssp_debug_mode = 0;
 304
 305         hci_bdaddr_list_clear(&hdev->le_accept_list);
 306         hci_bdaddr_list_clear(&hdev->le_resolv_list);
 307
 308         return rp->status;
 309 }
 310
 311 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data,
 312                                       struct sk_buff *skb)
 313 {
 314         struct hci_rp_read_stored_link_key *rp = data;
 315         struct hci_cp_read_stored_link_key *sent;
 316
 317         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 318
 319         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
 320         if (!sent)
 321                 return rp->status;
 322
 323         if (!rp->status && sent->read_all == 0x01) {
 324                 hdev->stored_max_keys = le16_to_cpu(rp->max_keys);
 325                 hdev->stored_num_keys = le16_to_cpu(rp->num_keys);
 326         }
 327
 328         return rp->status;
 329 }
 330
 331 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data,
 332                                         struct sk_buff *skb)
 333 {
 334         struct hci_rp_delete_stored_link_key *rp = data;
 335         u16 num_keys;
 336
 337         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 338
 339         if (rp->status)
 340                 return rp->status;
 341
 342         num_keys = le16_to_cpu(rp->num_keys);
 343
 344         if (num_keys <= hdev->stored_num_keys)
 345                 hdev->stored_num_keys -= num_keys;
 346         else
 347                 hdev->stored_num_keys = 0;
 348
 349         return rp->status;
 350 }
 351
 352 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data,
 353                                   struct sk_buff *skb)
 354 {
 355         struct hci_ev_status *rp = data;
 356         void *sent;
 357
 358         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 359
 360         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
 361         if (!sent)
 362                 return rp->status;
 363
 364         hci_dev_lock(hdev);
 365
 366         if (hci_dev_test_flag(hdev, HCI_MGMT))
 367                 mgmt_set_local_name_complete(hdev, sent, rp->status);
 368         else if (!rp->status)
 369                 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
 370
 371         hci_dev_unlock(hdev);
 372
 373         return rp->status;
 374 }
 375
 376 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data,
 377                                  struct sk_buff *skb)
 378 {
 379         struct hci_rp_read_local_name *rp = data;
 380
 381         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 382
 383         if (rp->status)
 384                 return rp->status;
 385
 386         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 387             hci_dev_test_flag(hdev, HCI_CONFIG))
 388                 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
 389
 390         return rp->status;
 391 }
 392
 393 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data,
 394                                    struct sk_buff *skb)
 395 {
 396         struct hci_ev_status *rp = data;
 397         void *sent;
 398
 399         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 400
 401         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
 402         if (!sent)
 403                 return rp->status;
 404
 405         hci_dev_lock(hdev);
 406
 407         if (!rp->status) {
 408                 __u8 param = *((__u8 *) sent);
 409
 410                 if (param == AUTH_ENABLED)
 411                         set_bit(HCI_AUTH, &hdev->flags);
 412                 else
 413                         clear_bit(HCI_AUTH, &hdev->flags);
 414         }
 415
 416         if (hci_dev_test_flag(hdev, HCI_MGMT))
 417                 mgmt_auth_enable_complete(hdev, rp->status);
 418
 419         hci_dev_unlock(hdev);
 420
 421         return rp->status;
 422 }
 423
 424 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data,
 425                                     struct sk_buff *skb)
 426 {
 427         struct hci_ev_status *rp = data;
 428         __u8 param;
 429         void *sent;
 430
 431         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 432
 433         if (rp->status)
 434                 return rp->status;
 435
 436         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
 437         if (!sent)
 438                 return rp->status;
 439
 440         param = *((__u8 *) sent);
 441
 442         if (param)
 443                 set_bit(HCI_ENCRYPT, &hdev->flags);
 444         else
 445                 clear_bit(HCI_ENCRYPT, &hdev->flags);
 446
 447         return rp->status;
 448 }
 449
 450 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data,
 451                                    struct sk_buff *skb)
 452 {
 453         struct hci_ev_status *rp = data;
 454         __u8 param;
 455         void *sent;
 456
 457         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 458
 459         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
 460         if (!sent)
 461                 return rp->status;
 462
 463         param = *((__u8 *) sent);
 464
 465         hci_dev_lock(hdev);
 466
 467         if (rp->status) {
 468                 hdev->discov_timeout = 0;
 469                 goto done;
 470         }
 471
 472         if (param & SCAN_INQUIRY)
 473                 set_bit(HCI_ISCAN, &hdev->flags);
 474         else
 475                 clear_bit(HCI_ISCAN, &hdev->flags);
 476
 477         if (param & SCAN_PAGE)
 478                 set_bit(HCI_PSCAN, &hdev->flags);
 479         else
 480                 clear_bit(HCI_PSCAN, &hdev->flags);
 481
 482 done:
 483         hci_dev_unlock(hdev);
 484
 485         return rp->status;
 486 }
 487
 488 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data,
 489                                   struct sk_buff *skb)
 490 {
 491         struct hci_ev_status *rp = data;
 492         struct hci_cp_set_event_filter *cp;
 493         void *sent;
 494
 495         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 496
 497         if (rp->status)
 498                 return rp->status;
 499
 500         sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT);
 501         if (!sent)
 502                 return rp->status;
 503
 504         cp = (struct hci_cp_set_event_filter *)sent;
 505
 506         if (cp->flt_type == HCI_FLT_CLEAR_ALL)
 507                 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
 508         else
 509                 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
 510
 511         return rp->status;
 512 }
 513
 514 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data,
 515                                    struct sk_buff *skb)
 516 {
 517         struct hci_rp_read_class_of_dev *rp = data;
 518
 519         if (WARN_ON(!hdev))
 520                 return HCI_ERROR_UNSPECIFIED;
 521
 522         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 523
 524         if (rp->status)
 525                 return rp->status;
 526
 527         memcpy(hdev->dev_class, rp->dev_class, 3);
 528
 529         bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2],
 530                    hdev->dev_class[1], hdev->dev_class[0]);
 531
 532         return rp->status;
 533 }
 534
 535 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data,
 536                                     struct sk_buff *skb)
 537 {
 538         struct hci_ev_status *rp = data;
 539         void *sent;
 540
 541         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 542
 543         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
 544         if (!sent)
 545                 return rp->status;
 546
 547         hci_dev_lock(hdev);
 548
 549         if (!rp->status)
 550                 memcpy(hdev->dev_class, sent, 3);
 551
 552         if (hci_dev_test_flag(hdev, HCI_MGMT))
 553                 mgmt_set_class_of_dev_complete(hdev, sent, rp->status);
 554
 555         hci_dev_unlock(hdev);
 556
 557         return rp->status;
 558 }
 559
 560 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data,
 561                                     struct sk_buff *skb)
 562 {
 563         struct hci_rp_read_voice_setting *rp = data;
 564         __u16 setting;
 565
 566         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 567
 568         if (rp->status)
 569                 return rp->status;
 570
 571         setting = __le16_to_cpu(rp->voice_setting);
 572
 573         if (hdev->voice_setting == setting)
 574                 return rp->status;
 575
 576         hdev->voice_setting = setting;
 577
 578         bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
 579
 580         if (hdev->notify)
 581                 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
 582
 583         return rp->status;
 584 }
 585
 586 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data,
 587                                      struct sk_buff *skb)
 588 {
 589         struct hci_ev_status *rp = data;
 590         __u16 setting;
 591         void *sent;
 592
 593         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 594
 595         if (rp->status)
 596                 return rp->status;
 597
 598         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
 599         if (!sent)
 600                 return rp->status;
 601
 602         setting = get_unaligned_le16(sent);
 603
 604         if (hdev->voice_setting == setting)
 605                 return rp->status;
 606
 607         hdev->voice_setting = setting;
 608
 609         bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
 610
 611         if (hdev->notify)
 612                 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
 613
 614         return rp->status;
 615 }
 616
 617 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data,
 618                                         struct sk_buff *skb)
 619 {
 620         struct hci_rp_read_num_supported_iac *rp = data;
 621
 622         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 623
 624         if (rp->status)
 625                 return rp->status;
 626
 627         hdev->num_iac = rp->num_iac;
 628
 629         bt_dev_dbg(hdev, "num iac %d", hdev->num_iac);
 630
 631         return rp->status;
 632 }
 633
 634 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data,
 635                                 struct sk_buff *skb)
 636 {
 637         struct hci_ev_status *rp = data;
 638         struct hci_cp_write_ssp_mode *sent;
 639
 640         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 641
 642         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
 643         if (!sent)
 644                 return rp->status;
 645
 646         hci_dev_lock(hdev);
 647
 648         if (!rp->status) {
 649                 if (sent->mode)
 650                         hdev->features[1][0] |= LMP_HOST_SSP;
 651                 else
 652                         hdev->features[1][0] &= ~LMP_HOST_SSP;
 653         }
 654
 655         if (!rp->status) {
 656                 if (sent->mode)
 657                         hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
 658                 else
 659                         hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
 660         }
 661
 662         hci_dev_unlock(hdev);
 663
 664         return rp->status;
 665 }
 666
 667 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data,
 668                                   struct sk_buff *skb)
 669 {
 670         struct hci_ev_status *rp = data;
 671         struct hci_cp_write_sc_support *sent;
 672
 673         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 674
 675         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
 676         if (!sent)
 677                 return rp->status;
 678
 679         hci_dev_lock(hdev);
 680
 681         if (!rp->status) {
 682                 if (sent->support)
 683                         hdev->features[1][0] |= LMP_HOST_SC;
 684                 else
 685                         hdev->features[1][0] &= ~LMP_HOST_SC;
 686         }
 687
 688         if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) {
 689                 if (sent->support)
 690                         hci_dev_set_flag(hdev, HCI_SC_ENABLED);
 691                 else
 692                         hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
 693         }
 694
 695         hci_dev_unlock(hdev);
 696
 697         return rp->status;
 698 }
 699
 700 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data,
 701                                     struct sk_buff *skb)
 702 {
 703         struct hci_rp_read_local_version *rp = data;
 704
 705         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 706
 707         if (rp->status)
 708                 return rp->status;
 709
 710         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 711             hci_dev_test_flag(hdev, HCI_CONFIG)) {
 712                 hdev->hci_ver = rp->hci_ver;
 713                 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
 714                 hdev->lmp_ver = rp->lmp_ver;
 715                 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
 716                 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
 717         }
 718
 719         return rp->status;
 720 }
 721
 722 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data,
 723                                    struct sk_buff *skb)
 724 {
 725         struct hci_rp_read_enc_key_size *rp = data;
 726         struct hci_conn *conn;
 727         u16 handle;
 728         u8 status = rp->status;
 729
 730         bt_dev_dbg(hdev, "status 0x%2.2x", status);
 731
 732         handle = le16_to_cpu(rp->handle);
 733
 734         hci_dev_lock(hdev);
 735
 736         conn = hci_conn_hash_lookup_handle(hdev, handle);
 737         if (!conn) {
 738                 status = 0xFF;
 739                 goto done;
 740         }
 741
 742         /* While unexpected, the read_enc_key_size command may fail. The most
 743          * secure approach is to then assume the key size is 0 to force a
 744          * disconnection.
 745          */
 746         if (status) {
 747                 bt_dev_err(hdev, "failed to read key size for handle %u",
 748                            handle);
 749                 conn->enc_key_size = 0;
 750         } else {
 751                 conn->enc_key_size = rp->key_size;
 752                 status = 0;
 753
 754                 if (conn->enc_key_size < hdev->min_enc_key_size) {
 755                         /* As slave role, the conn->state has been set to
 756                          * BT_CONNECTED and l2cap conn req might not be received
 757                          * yet, at this moment the l2cap layer almost does
 758                          * nothing with the non-zero status.
 759                          * So we also clear encrypt related bits, and then the
 760                          * handler of l2cap conn req will get the right secure
 761                          * state at a later time.
 762                          */
 763                         status = HCI_ERROR_AUTH_FAILURE;
 764                         clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
 765                         clear_bit(HCI_CONN_AES_CCM, &conn->flags);
 766                 }
 767         }
 768
 769         hci_encrypt_cfm(conn, status);
 770
 771 done:
 772         hci_dev_unlock(hdev);
 773
 774         return status;
 775 }
 776
 777 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data,
 778                                      struct sk_buff *skb)
 779 {
 780         struct hci_rp_read_local_commands *rp = data;
 781
 782         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 783
 784         if (rp->status)
 785                 return rp->status;
 786
 787         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 788             hci_dev_test_flag(hdev, HCI_CONFIG))
 789                 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
 790
 791         return rp->status;
 792 }
 793
 794 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data,
 795                                            struct sk_buff *skb)
 796 {
 797         struct hci_rp_read_auth_payload_to *rp = data;
 798         struct hci_conn *conn;
 799
 800         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 801
 802         if (rp->status)
 803                 return rp->status;
 804
 805         hci_dev_lock(hdev);
 806
 807         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 808         if (conn)
 809                 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
 810
 811         hci_dev_unlock(hdev);
 812
 813         return rp->status;
 814 }
 815
 816 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data,
 817                                             struct sk_buff *skb)
 818 {
 819         struct hci_rp_write_auth_payload_to *rp = data;
 820         struct hci_conn *conn;
 821         void *sent;
 822
 823         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 824
 825         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
 826         if (!sent)
 827                 return rp->status;
 828
 829         hci_dev_lock(hdev);
 830
 831         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 832         if (!conn) {
 833                 rp->status = 0xff;
 834                 goto unlock;
 835         }
 836
 837         if (!rp->status)
 838                 conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
 839
 840 unlock:
 841         hci_dev_unlock(hdev);
 842
 843         return rp->status;
 844 }
 845
 846 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data,
 847                                      struct sk_buff *skb)
 848 {
 849         struct hci_rp_read_local_features *rp = data;
 850
 851         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 852
 853         if (rp->status)
 854                 return rp->status;
 855
 856         memcpy(hdev->features, rp->features, 8);
 857
 858         /* Adjust default settings according to features
 859          * supported by device. */
 860
 861         if (hdev->features[0][0] & LMP_3SLOT)
 862                 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
 863
 864         if (hdev->features[0][0] & LMP_5SLOT)
 865                 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
 866
 867         if (hdev->features[0][1] & LMP_HV2) {
 868                 hdev->pkt_type  |= (HCI_HV2);
 869                 hdev->esco_type |= (ESCO_HV2);
 870         }
 871
 872         if (hdev->features[0][1] & LMP_HV3) {
 873                 hdev->pkt_type  |= (HCI_HV3);
 874                 hdev->esco_type |= (ESCO_HV3);
 875         }
 876
 877         if (lmp_esco_capable(hdev))
 878                 hdev->esco_type |= (ESCO_EV3);
 879
 880         if (hdev->features[0][4] & LMP_EV4)
 881                 hdev->esco_type |= (ESCO_EV4);
 882
 883         if (hdev->features[0][4] & LMP_EV5)
 884                 hdev->esco_type |= (ESCO_EV5);
 885
 886         if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
 887                 hdev->esco_type |= (ESCO_2EV3);
 888
 889         if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
 890                 hdev->esco_type |= (ESCO_3EV3);
 891
 892         if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
 893                 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
 894
 895         return rp->status;
 896 }
 897
 898 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
 899                                          struct sk_buff *skb)
 900 {
 901         struct hci_rp_read_local_ext_features *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         if (hdev->max_page < rp->max_page) {
 909                 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
 910                              &hdev->quirks))
 911                         bt_dev_warn(hdev, "broken local ext features page 2");
 912                 else
 913                         hdev->max_page = rp->max_page;
 914         }
 915
 916         if (rp->page < HCI_MAX_PAGES)
 917                 memcpy(hdev->features[rp->page], rp->features, 8);
 918
 919         return rp->status;
 920 }
 921
 922 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data,
 923                                         struct sk_buff *skb)
 924 {
 925         struct hci_rp_read_flow_control_mode *rp = data;
 926
 927         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 928
 929         if (rp->status)
 930                 return rp->status;
 931
 932         hdev->flow_ctl_mode = rp->mode;
 933
 934         return rp->status;
 935 }
 936
 937 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data,
 938                                   struct sk_buff *skb)
 939 {
 940         struct hci_rp_read_buffer_size *rp = data;
 941
 942         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 943
 944         if (rp->status)
 945                 return rp->status;
 946
 947         hdev->acl_mtu  = __le16_to_cpu(rp->acl_mtu);
 948         hdev->sco_mtu  = rp->sco_mtu;
 949         hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
 950         hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
 951
 952         if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
 953                 hdev->sco_mtu  = 64;
 954                 hdev->sco_pkts = 8;
 955         }
 956
 957         hdev->acl_cnt = hdev->acl_pkts;
 958         hdev->sco_cnt = hdev->sco_pkts;
 959
 960         BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
 961                hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
 962
 963         return rp->status;
 964 }
 965
 966 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data,
 967                               struct sk_buff *skb)
 968 {
 969         struct hci_rp_read_bd_addr *rp = data;
 970
 971         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 972
 973         if (rp->status)
 974                 return rp->status;
 975
 976         if (test_bit(HCI_INIT, &hdev->flags))
 977                 bacpy(&hdev->bdaddr, &rp->bdaddr);
 978
 979         if (hci_dev_test_flag(hdev, HCI_SETUP))
 980                 bacpy(&hdev->setup_addr, &rp->bdaddr);
 981
 982         return rp->status;
 983 }
 984
 985 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data,
 986                                          struct sk_buff *skb)
 987 {
 988         struct hci_rp_read_local_pairing_opts *rp = data;
 989
 990         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 991
 992         if (rp->status)
 993                 return rp->status;
 994
 995         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 996             hci_dev_test_flag(hdev, HCI_CONFIG)) {
 997                 hdev->pairing_opts = rp->pairing_opts;
 998                 hdev->max_enc_key_size = rp->max_key_size;
 999         }
1000
1001         return rp->status;
1002 }
1003
1004 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data,
1005                                          struct sk_buff *skb)
1006 {
1007         struct hci_rp_read_page_scan_activity *rp = data;
1008
1009         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1010
1011         if (rp->status)
1012                 return rp->status;
1013
1014         if (test_bit(HCI_INIT, &hdev->flags)) {
1015                 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
1016                 hdev->page_scan_window = __le16_to_cpu(rp->window);
1017         }
1018
1019         return rp->status;
1020 }
1021
1022 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data,
1023                                           struct sk_buff *skb)
1024 {
1025         struct hci_ev_status *rp = data;
1026         struct hci_cp_write_page_scan_activity *sent;
1027
1028         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1029
1030         if (rp->status)
1031                 return rp->status;
1032
1033         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
1034         if (!sent)
1035                 return rp->status;
1036
1037         hdev->page_scan_interval = __le16_to_cpu(sent->interval);
1038         hdev->page_scan_window = __le16_to_cpu(sent->window);
1039
1040         return rp->status;
1041 }
1042
1043 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data,
1044                                      struct sk_buff *skb)
1045 {
1046         struct hci_rp_read_page_scan_type *rp = data;
1047
1048         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1049
1050         if (rp->status)
1051                 return rp->status;
1052
1053         if (test_bit(HCI_INIT, &hdev->flags))
1054                 hdev->page_scan_type = rp->type;
1055
1056         return rp->status;
1057 }
1058
1059 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data,
1060                                       struct sk_buff *skb)
1061 {
1062         struct hci_ev_status *rp = data;
1063         u8 *type;
1064
1065         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1066
1067         if (rp->status)
1068                 return rp->status;
1069
1070         type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
1071         if (type)
1072                 hdev->page_scan_type = *type;
1073
1074         return rp->status;
1075 }
1076
1077 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data,
1078                                       struct sk_buff *skb)
1079 {
1080         struct hci_rp_read_data_block_size *rp = data;
1081
1082         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1083
1084         if (rp->status)
1085                 return rp->status;
1086
1087         hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
1088         hdev->block_len = __le16_to_cpu(rp->block_len);
1089         hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
1090
1091         hdev->block_cnt = hdev->num_blocks;
1092
1093         BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
1094                hdev->block_cnt, hdev->block_len);
1095
1096         return rp->status;
1097 }
1098
1099 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data,
1100                             struct sk_buff *skb)
1101 {
1102         struct hci_rp_read_clock *rp = data;
1103         struct hci_cp_read_clock *cp;
1104         struct hci_conn *conn;
1105
1106         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1107
1108         if (rp->status)
1109                 return rp->status;
1110
1111         hci_dev_lock(hdev);
1112
1113         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
1114         if (!cp)
1115                 goto unlock;
1116
1117         if (cp->which == 0x00) {
1118                 hdev->clock = le32_to_cpu(rp->clock);
1119                 goto unlock;
1120         }
1121
1122         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1123         if (conn) {
1124                 conn->clock = le32_to_cpu(rp->clock);
1125                 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
1126         }
1127
1128 unlock:
1129         hci_dev_unlock(hdev);
1130         return rp->status;
1131 }
1132
1133 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data,
1134                                      struct sk_buff *skb)
1135 {
1136         struct hci_rp_read_local_amp_info *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->amp_status = rp->amp_status;
1144         hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
1145         hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
1146         hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
1147         hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
1148         hdev->amp_type = rp->amp_type;
1149         hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
1150         hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
1151         hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
1152         hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
1153
1154         return rp->status;
1155 }
1156
1157 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data,
1158                                        struct sk_buff *skb)
1159 {
1160         struct hci_rp_read_inq_rsp_tx_power *rp = data;
1161
1162         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1163
1164         if (rp->status)
1165                 return rp->status;
1166
1167         hdev->inq_tx_power = rp->tx_power;
1168
1169         return rp->status;
1170 }
1171
1172 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data,
1173                                              struct sk_buff *skb)
1174 {
1175         struct hci_rp_read_def_err_data_reporting *rp = data;
1176
1177         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1178
1179         if (rp->status)
1180                 return rp->status;
1181
1182         hdev->err_data_reporting = rp->err_data_reporting;
1183
1184         return rp->status;
1185 }
1186
1187 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data,
1188                                               struct sk_buff *skb)
1189 {
1190         struct hci_ev_status *rp = data;
1191         struct hci_cp_write_def_err_data_reporting *cp;
1192
1193         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1194
1195         if (rp->status)
1196                 return rp->status;
1197
1198         cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
1199         if (!cp)
1200                 return rp->status;
1201
1202         hdev->err_data_reporting = cp->err_data_reporting;
1203
1204         return rp->status;
1205 }
1206
1207 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data,
1208                                 struct sk_buff *skb)
1209 {
1210         struct hci_rp_pin_code_reply *rp = data;
1211         struct hci_cp_pin_code_reply *cp;
1212         struct hci_conn *conn;
1213
1214         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1215
1216         hci_dev_lock(hdev);
1217
1218         if (hci_dev_test_flag(hdev, HCI_MGMT))
1219                 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
1220
1221         if (rp->status)
1222                 goto unlock;
1223
1224         cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
1225         if (!cp)
1226                 goto unlock;
1227
1228         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1229         if (conn)
1230                 conn->pin_length = cp->pin_len;
1231
1232 unlock:
1233         hci_dev_unlock(hdev);
1234         return rp->status;
1235 }
1236
1237 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data,
1238                                     struct sk_buff *skb)
1239 {
1240         struct hci_rp_pin_code_neg_reply *rp = data;
1241
1242         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1243
1244         hci_dev_lock(hdev);
1245
1246         if (hci_dev_test_flag(hdev, HCI_MGMT))
1247                 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
1248                                                  rp->status);
1249
1250         hci_dev_unlock(hdev);
1251
1252         return rp->status;
1253 }
1254
1255 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data,
1256                                      struct sk_buff *skb)
1257 {
1258         struct hci_rp_le_read_buffer_size *rp = data;
1259
1260         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1261
1262         if (rp->status)
1263                 return rp->status;
1264
1265         hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
1266         hdev->le_pkts = rp->le_max_pkt;
1267
1268         hdev->le_cnt = hdev->le_pkts;
1269
1270         BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
1271
1272         return rp->status;
1273 }
1274
1275 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data,
1276                                         struct sk_buff *skb)
1277 {
1278         struct hci_rp_le_read_local_features *rp = data;
1279
1280         BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1281
1282         if (rp->status)
1283                 return rp->status;
1284
1285         memcpy(hdev->le_features, rp->features, 8);
1286
1287         return rp->status;
1288 }
1289
1290 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data,
1291                                       struct sk_buff *skb)
1292 {
1293         struct hci_rp_le_read_adv_tx_power *rp = data;
1294
1295         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1296
1297         if (rp->status)
1298                 return rp->status;
1299
1300         hdev->adv_tx_power = rp->tx_power;
1301
1302         return rp->status;
1303 }
1304
1305 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data,
1306                                     struct sk_buff *skb)
1307 {
1308         struct hci_rp_user_confirm_reply *rp = data;
1309
1310         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1311
1312         hci_dev_lock(hdev);
1313
1314         if (hci_dev_test_flag(hdev, HCI_MGMT))
1315                 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
1316                                                  rp->status);
1317
1318         hci_dev_unlock(hdev);
1319
1320         return rp->status;
1321 }
1322
1323 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data,
1324                                         struct sk_buff *skb)
1325 {
1326         struct hci_rp_user_confirm_reply *rp = data;
1327
1328         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1329
1330         hci_dev_lock(hdev);
1331
1332         if (hci_dev_test_flag(hdev, HCI_MGMT))
1333                 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1334                                                      ACL_LINK, 0, rp->status);
1335
1336         hci_dev_unlock(hdev);
1337
1338         return rp->status;
1339 }
1340
1341 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data,
1342                                     struct sk_buff *skb)
1343 {
1344         struct hci_rp_user_confirm_reply *rp = data;
1345
1346         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1347
1348         hci_dev_lock(hdev);
1349
1350         if (hci_dev_test_flag(hdev, HCI_MGMT))
1351                 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1352                                                  0, rp->status);
1353
1354         hci_dev_unlock(hdev);
1355
1356         return rp->status;
1357 }
1358
1359 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data,
1360                                         struct sk_buff *skb)
1361 {
1362         struct hci_rp_user_confirm_reply *rp = data;
1363
1364         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1365
1366         hci_dev_lock(hdev);
1367
1368         if (hci_dev_test_flag(hdev, HCI_MGMT))
1369                 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1370                                                      ACL_LINK, 0, rp->status);
1371
1372         hci_dev_unlock(hdev);
1373
1374         return rp->status;
1375 }
1376
1377 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data,
1378                                      struct sk_buff *skb)
1379 {
1380         struct hci_rp_read_local_oob_data *rp = data;
1381
1382         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1383
1384         return rp->status;
1385 }
1386
1387 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data,
1388                                          struct sk_buff *skb)
1389 {
1390         struct hci_rp_read_local_oob_ext_data *rp = data;
1391
1392         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1393
1394         return rp->status;
1395 }
1396
1397 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data,
1398                                     struct sk_buff *skb)
1399 {
1400         struct hci_ev_status *rp = data;
1401         bdaddr_t *sent;
1402
1403         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1404
1405         if (rp->status)
1406                 return rp->status;
1407
1408         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1409         if (!sent)
1410                 return rp->status;
1411
1412         hci_dev_lock(hdev);
1413
1414         bacpy(&hdev->random_addr, sent);
1415
1416         if (!bacmp(&hdev->rpa, sent)) {
1417                 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
1418                 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired,
1419                                    secs_to_jiffies(hdev->rpa_timeout));
1420         }
1421
1422         hci_dev_unlock(hdev);
1423
1424         return rp->status;
1425 }
1426
1427 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data,
1428                                     struct sk_buff *skb)
1429 {
1430         struct hci_ev_status *rp = data;
1431         struct hci_cp_le_set_default_phy *cp;
1432
1433         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1434
1435         if (rp->status)
1436                 return rp->status;
1437
1438         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1439         if (!cp)
1440                 return rp->status;
1441
1442         hci_dev_lock(hdev);
1443
1444         hdev->le_tx_def_phys = cp->tx_phys;
1445         hdev->le_rx_def_phys = cp->rx_phys;
1446
1447         hci_dev_unlock(hdev);
1448
1449         return rp->status;
1450 }
1451
1452 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data,
1453                                             struct sk_buff *skb)
1454 {
1455         struct hci_ev_status *rp = data;
1456         struct hci_cp_le_set_adv_set_rand_addr *cp;
1457         struct adv_info *adv;
1458
1459         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1460
1461         if (rp->status)
1462                 return rp->status;
1463
1464         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1465         /* Update only in case the adv instance since handle 0x00 shall be using
1466          * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
1467          * non-extended adverting.
1468          */
1469         if (!cp || !cp->handle)
1470                 return rp->status;
1471
1472         hci_dev_lock(hdev);
1473
1474         adv = hci_find_adv_instance(hdev, cp->handle);
1475         if (adv) {
1476                 bacpy(&adv->random_addr, &cp->bdaddr);
1477                 if (!bacmp(&hdev->rpa, &cp->bdaddr)) {
1478                         adv->rpa_expired = false;
1479                         queue_delayed_work(hdev->workqueue,
1480                                            &adv->rpa_expired_cb,
1481                                            secs_to_jiffies(hdev->rpa_timeout));
1482                 }
1483         }
1484
1485         hci_dev_unlock(hdev);
1486
1487         return rp->status;
1488 }
1489
1490 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data,
1491                                    struct sk_buff *skb)
1492 {
1493         struct hci_ev_status *rp = data;
1494         u8 *instance;
1495         int err;
1496
1497         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1498
1499         if (rp->status)
1500                 return rp->status;
1501
1502         instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET);
1503         if (!instance)
1504                 return rp->status;
1505
1506         hci_dev_lock(hdev);
1507
1508         err = hci_remove_adv_instance(hdev, *instance);
1509         if (!err)
1510                 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev,
1511                                          *instance);
1512
1513         hci_dev_unlock(hdev);
1514
1515         return rp->status;
1516 }
1517
1518 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data,
1519                                    struct sk_buff *skb)
1520 {
1521         struct hci_ev_status *rp = data;
1522         struct adv_info *adv, *n;
1523         int err;
1524
1525         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1526
1527         if (rp->status)
1528                 return rp->status;
1529
1530         if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS))
1531                 return rp->status;
1532
1533         hci_dev_lock(hdev);
1534
1535         list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1536                 u8 instance = adv->instance;
1537
1538                 err = hci_remove_adv_instance(hdev, instance);
1539                 if (!err)
1540                         mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd),
1541                                                  hdev, instance);
1542         }
1543
1544         hci_dev_unlock(hdev);
1545
1546         return rp->status;
1547 }
1548
1549 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data,
1550                                         struct sk_buff *skb)
1551 {
1552         struct hci_rp_le_read_transmit_power *rp = data;
1553
1554         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1555
1556         if (rp->status)
1557                 return rp->status;
1558
1559         hdev->min_le_tx_power = rp->min_le_tx_power;
1560         hdev->max_le_tx_power = rp->max_le_tx_power;
1561
1562         return rp->status;
1563 }
1564
1565 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data,
1566                                      struct sk_buff *skb)
1567 {
1568         struct hci_ev_status *rp = data;
1569         struct hci_cp_le_set_privacy_mode *cp;
1570         struct hci_conn_params *params;
1571
1572         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1573
1574         if (rp->status)
1575                 return rp->status;
1576
1577         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE);
1578         if (!cp)
1579                 return rp->status;
1580
1581         hci_dev_lock(hdev);
1582
1583         params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type);
1584         if (params)
1585                 WRITE_ONCE(params->privacy_mode, cp->mode);
1586
1587         hci_dev_unlock(hdev);
1588
1589         return rp->status;
1590 }
1591
1592 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data,
1593                                    struct sk_buff *skb)
1594 {
1595         struct hci_ev_status *rp = data;
1596         __u8 *sent;
1597
1598         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1599
1600         if (rp->status)
1601                 return rp->status;
1602
1603         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1604         if (!sent)
1605                 return rp->status;
1606
1607         hci_dev_lock(hdev);
1608
1609         /* If we're doing connection initiation as peripheral. Set a
1610          * timeout in case something goes wrong.
1611          */
1612         if (*sent) {
1613                 struct hci_conn *conn;
1614
1615                 hci_dev_set_flag(hdev, HCI_LE_ADV);
1616
1617                 conn = hci_lookup_le_connect(hdev);
1618                 if (conn)
1619                         queue_delayed_work(hdev->workqueue,
1620                                            &conn->le_conn_timeout,
1621                                            conn->conn_timeout);
1622         } else {
1623                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1624         }
1625
1626         hci_dev_unlock(hdev);
1627
1628         return rp->status;
1629 }
1630
1631 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
1632                                        struct sk_buff *skb)
1633 {
1634         struct hci_cp_le_set_ext_adv_enable *cp;
1635         struct hci_cp_ext_adv_set *set;
1636         struct adv_info *adv = NULL, *n;
1637         struct hci_ev_status *rp = data;
1638
1639         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1640
1641         if (rp->status)
1642                 return rp->status;
1643
1644         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1645         if (!cp)
1646                 return rp->status;
1647
1648         set = (void *)cp->data;
1649
1650         hci_dev_lock(hdev);
1651
1652         if (cp->num_of_sets)
1653                 adv = hci_find_adv_instance(hdev, set->handle);
1654
1655         if (cp->enable) {
1656                 struct hci_conn *conn;
1657
1658                 hci_dev_set_flag(hdev, HCI_LE_ADV);
1659
1660                 if (adv && !adv->periodic)
1661                         adv->enabled = true;
1662
1663                 conn = hci_lookup_le_connect(hdev);
1664                 if (conn)
1665                         queue_delayed_work(hdev->workqueue,
1666                                            &conn->le_conn_timeout,
1667                                            conn->conn_timeout);
1668         } else {
1669                 if (cp->num_of_sets) {
1670                         if (adv)
1671                                 adv->enabled = false;
1672
1673                         /* If just one instance was disabled check if there are
1674                          * any other instance enabled before clearing HCI_LE_ADV
1675                          */
1676                         list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1677                                                  list) {
1678                                 if (adv->enabled)
1679                                         goto unlock;
1680                         }
1681                 } else {
1682                         /* All instances shall be considered disabled */
1683                         list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1684                                                  list)
1685                                 adv->enabled = false;
1686                 }
1687
1688                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1689         }
1690
1691 unlock:
1692         hci_dev_unlock(hdev);
1693         return rp->status;
1694 }
1695
1696 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data,
1697                                    struct sk_buff *skb)
1698 {
1699         struct hci_cp_le_set_scan_param *cp;
1700         struct hci_ev_status *rp = data;
1701
1702         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1703
1704         if (rp->status)
1705                 return rp->status;
1706
1707         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1708         if (!cp)
1709                 return rp->status;
1710
1711         hci_dev_lock(hdev);
1712
1713         hdev->le_scan_type = cp->type;
1714
1715         hci_dev_unlock(hdev);
1716
1717         return rp->status;
1718 }
1719
1720 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data,
1721                                        struct sk_buff *skb)
1722 {
1723         struct hci_cp_le_set_ext_scan_params *cp;
1724         struct hci_ev_status *rp = data;
1725         struct hci_cp_le_scan_phy_params *phy_param;
1726
1727         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1728
1729         if (rp->status)
1730                 return rp->status;
1731
1732         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1733         if (!cp)
1734                 return rp->status;
1735
1736         phy_param = (void *)cp->data;
1737
1738         hci_dev_lock(hdev);
1739
1740         hdev->le_scan_type = phy_param->type;
1741
1742         hci_dev_unlock(hdev);
1743
1744         return rp->status;
1745 }
1746
1747 static bool has_pending_adv_report(struct hci_dev *hdev)
1748 {
1749         struct discovery_state *d = &hdev->discovery;
1750
1751         return bacmp(&d->last_adv_addr, BDADDR_ANY);
1752 }
1753
1754 static void clear_pending_adv_report(struct hci_dev *hdev)
1755 {
1756         struct discovery_state *d = &hdev->discovery;
1757
1758         bacpy(&d->last_adv_addr, BDADDR_ANY);
1759         d->last_adv_data_len = 0;
1760 }
1761
1762 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1763                                      u8 bdaddr_type, s8 rssi, u32 flags,
1764                                      u8 *data, u8 len)
1765 {
1766         struct discovery_state *d = &hdev->discovery;
1767
1768         if (len > max_adv_len(hdev))
1769                 return;
1770
1771         bacpy(&d->last_adv_addr, bdaddr);
1772         d->last_adv_addr_type = bdaddr_type;
1773         d->last_adv_rssi = rssi;
1774         d->last_adv_flags = flags;
1775         memcpy(d->last_adv_data, data, len);
1776         d->last_adv_data_len = len;
1777 }
1778
1779 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1780 {
1781         hci_dev_lock(hdev);
1782
1783         switch (enable) {
1784         case LE_SCAN_ENABLE:
1785                 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1786                 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1787                         clear_pending_adv_report(hdev);
1788                 if (hci_dev_test_flag(hdev, HCI_MESH))
1789                         hci_discovery_set_state(hdev, DISCOVERY_FINDING);
1790                 break;
1791
1792         case LE_SCAN_DISABLE:
1793                 /* We do this here instead of when setting DISCOVERY_STOPPED
1794                  * since the latter would potentially require waiting for
1795                  * inquiry to stop too.
1796                  */
1797                 if (has_pending_adv_report(hdev)) {
1798                         struct discovery_state *d = &hdev->discovery;
1799
1800                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1801                                           d->last_adv_addr_type, NULL,
1802                                           d->last_adv_rssi, d->last_adv_flags,
1803                                           d->last_adv_data,
1804                                           d->last_adv_data_len, NULL, 0, 0);
1805                 }
1806
1807                 /* Cancel this timer so that we don't try to disable scanning
1808                  * when it's already disabled.
1809                  */
1810                 cancel_delayed_work(&hdev->le_scan_disable);
1811
1812                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1813
1814                 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1815                  * interrupted scanning due to a connect request. Mark
1816                  * therefore discovery as stopped.
1817                  */
1818                 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1819 #ifndef TIZEN_BT /* The below line is kernel bug. */
1820                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1821 #else
1822                         hci_le_discovery_set_state(hdev, DISCOVERY_STOPPED);
1823 #endif
1824                 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1825                          hdev->discovery.state == DISCOVERY_FINDING)
1826                         queue_work(hdev->workqueue, &hdev->reenable_adv_work);
1827
1828                 break;
1829
1830         default:
1831                 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1832                            enable);
1833                 break;
1834         }
1835
1836         hci_dev_unlock(hdev);
1837 }
1838
1839 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1840                                     struct sk_buff *skb)
1841 {
1842         struct hci_cp_le_set_scan_enable *cp;
1843         struct hci_ev_status *rp = data;
1844
1845         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1846
1847         if (rp->status)
1848                 return rp->status;
1849
1850         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1851         if (!cp)
1852                 return rp->status;
1853
1854         le_set_scan_enable_complete(hdev, cp->enable);
1855
1856         return rp->status;
1857 }
1858
1859 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1860                                         struct sk_buff *skb)
1861 {
1862         struct hci_cp_le_set_ext_scan_enable *cp;
1863         struct hci_ev_status *rp = data;
1864
1865         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1866
1867         if (rp->status)
1868                 return rp->status;
1869
1870         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1871         if (!cp)
1872                 return rp->status;
1873
1874         le_set_scan_enable_complete(hdev, cp->enable);
1875
1876         return rp->status;
1877 }
1878
1879 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1880                                       struct sk_buff *skb)
1881 {
1882         struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1883
1884         bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1885                    rp->num_of_sets);
1886
1887         if (rp->status)
1888                 return rp->status;
1889
1890         hdev->le_num_of_adv_sets = rp->num_of_sets;
1891
1892         return rp->status;
1893 }
1894
1895 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1896                                           struct sk_buff *skb)
1897 {
1898         struct hci_rp_le_read_accept_list_size *rp = data;
1899
1900         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1901
1902         if (rp->status)
1903                 return rp->status;
1904
1905         hdev->le_accept_list_size = rp->size;
1906
1907         return rp->status;
1908 }
1909
1910 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1911                                       struct sk_buff *skb)
1912 {
1913         struct hci_ev_status *rp = data;
1914
1915         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1916
1917         if (rp->status)
1918                 return rp->status;
1919
1920         hci_dev_lock(hdev);
1921         hci_bdaddr_list_clear(&hdev->le_accept_list);
1922         hci_dev_unlock(hdev);
1923
1924         return rp->status;
1925 }
1926
1927 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1928                                        struct sk_buff *skb)
1929 {
1930         struct hci_cp_le_add_to_accept_list *sent;
1931         struct hci_ev_status *rp = data;
1932
1933         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1934
1935         if (rp->status)
1936                 return rp->status;
1937
1938         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1939         if (!sent)
1940                 return rp->status;
1941
1942         hci_dev_lock(hdev);
1943         hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
1944                             sent->bdaddr_type);
1945         hci_dev_unlock(hdev);
1946
1947         return rp->status;
1948 }
1949
1950 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1951                                          struct sk_buff *skb)
1952 {
1953         struct hci_cp_le_del_from_accept_list *sent;
1954         struct hci_ev_status *rp = data;
1955
1956         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1957
1958         if (rp->status)
1959                 return rp->status;
1960
1961         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1962         if (!sent)
1963                 return rp->status;
1964
1965         hci_dev_lock(hdev);
1966         hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
1967                             sent->bdaddr_type);
1968         hci_dev_unlock(hdev);
1969
1970         return rp->status;
1971 }
1972
1973 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1974                                           struct sk_buff *skb)
1975 {
1976         struct hci_rp_le_read_supported_states *rp = data;
1977
1978         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1979
1980         if (rp->status)
1981                 return rp->status;
1982
1983         memcpy(hdev->le_states, rp->le_states, 8);
1984
1985         return rp->status;
1986 }
1987
1988 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
1989                                       struct sk_buff *skb)
1990 {
1991         struct hci_rp_le_read_def_data_len *rp = data;
1992
1993         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1994
1995         if (rp->status)
1996                 return rp->status;
1997
1998         hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1999         hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
2000
2001         return rp->status;
2002 }
2003
2004 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
2005                                        struct sk_buff *skb)
2006 {
2007         struct hci_cp_le_write_def_data_len *sent;
2008         struct hci_ev_status *rp = data;
2009
2010         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2011
2012         if (rp->status)
2013                 return rp->status;
2014
2015         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
2016         if (!sent)
2017                 return rp->status;
2018
2019         hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
2020         hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
2021
2022         return rp->status;
2023 }
2024
2025 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
2026                                        struct sk_buff *skb)
2027 {
2028         struct hci_cp_le_add_to_resolv_list *sent;
2029         struct hci_ev_status *rp = data;
2030
2031         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2032
2033         if (rp->status)
2034                 return rp->status;
2035
2036         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
2037         if (!sent)
2038                 return rp->status;
2039
2040         hci_dev_lock(hdev);
2041         hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2042                                 sent->bdaddr_type, sent->peer_irk,
2043                                 sent->local_irk);
2044         hci_dev_unlock(hdev);
2045
2046         return rp->status;
2047 }
2048
2049 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
2050                                          struct sk_buff *skb)
2051 {
2052         struct hci_cp_le_del_from_resolv_list *sent;
2053         struct hci_ev_status *rp = data;
2054
2055         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2056
2057         if (rp->status)
2058                 return rp->status;
2059
2060         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
2061         if (!sent)
2062                 return rp->status;
2063
2064         hci_dev_lock(hdev);
2065         hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2066                             sent->bdaddr_type);
2067         hci_dev_unlock(hdev);
2068
2069         return rp->status;
2070 }
2071
2072 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2073                                       struct sk_buff *skb)
2074 {
2075         struct hci_ev_status *rp = data;
2076
2077         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2078
2079         if (rp->status)
2080                 return rp->status;
2081
2082         hci_dev_lock(hdev);
2083         hci_bdaddr_list_clear(&hdev->le_resolv_list);
2084         hci_dev_unlock(hdev);
2085
2086         return rp->status;
2087 }
2088
2089 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2090                                           struct sk_buff *skb)
2091 {
2092         struct hci_rp_le_read_resolv_list_size *rp = data;
2093
2094         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2095
2096         if (rp->status)
2097                 return rp->status;
2098
2099         hdev->le_resolv_list_size = rp->size;
2100
2101         return rp->status;
2102 }
2103
2104 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2105                                                struct sk_buff *skb)
2106 {
2107         struct hci_ev_status *rp = data;
2108         __u8 *sent;
2109
2110         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2111
2112         if (rp->status)
2113                 return rp->status;
2114
2115         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2116         if (!sent)
2117                 return rp->status;
2118
2119         hci_dev_lock(hdev);
2120
2121         if (*sent)
2122                 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2123         else
2124                 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2125
2126         hci_dev_unlock(hdev);
2127
2128         return rp->status;
2129 }
2130
2131 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2132                                       struct sk_buff *skb)
2133 {
2134         struct hci_rp_le_read_max_data_len *rp = data;
2135
2136         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2137
2138         if (rp->status)
2139                 return rp->status;
2140
2141         hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2142         hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2143         hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2144         hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2145
2146         return rp->status;
2147 }
2148
2149 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2150                                          struct sk_buff *skb)
2151 {
2152         struct hci_cp_write_le_host_supported *sent;
2153         struct hci_ev_status *rp = data;
2154
2155         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2156
2157         if (rp->status)
2158                 return rp->status;
2159
2160         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2161         if (!sent)
2162                 return rp->status;
2163
2164         hci_dev_lock(hdev);
2165
2166         if (sent->le) {
2167                 hdev->features[1][0] |= LMP_HOST_LE;
2168                 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2169         } else {
2170                 hdev->features[1][0] &= ~LMP_HOST_LE;
2171                 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2172                 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2173         }
2174
2175         if (sent->simul)
2176                 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2177         else
2178                 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2179
2180         hci_dev_unlock(hdev);
2181
2182         return rp->status;
2183 }
2184
2185 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2186                                struct sk_buff *skb)
2187 {
2188         struct hci_cp_le_set_adv_param *cp;
2189         struct hci_ev_status *rp = data;
2190
2191         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2192
2193         if (rp->status)
2194                 return rp->status;
2195
2196         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2197         if (!cp)
2198                 return rp->status;
2199
2200         hci_dev_lock(hdev);
2201         hdev->adv_addr_type = cp->own_address_type;
2202         hci_dev_unlock(hdev);
2203
2204         return rp->status;
2205 }
2206
2207 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2208                                    struct sk_buff *skb)
2209 {
2210         struct hci_rp_le_set_ext_adv_params *rp = data;
2211         struct hci_cp_le_set_ext_adv_params *cp;
2212         struct adv_info *adv_instance;
2213
2214         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2215
2216         if (rp->status)
2217                 return rp->status;
2218
2219         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2220         if (!cp)
2221                 return rp->status;
2222
2223         hci_dev_lock(hdev);
2224         hdev->adv_addr_type = cp->own_addr_type;
2225         if (!cp->handle) {
2226                 /* Store in hdev for instance 0 */
2227                 hdev->adv_tx_power = rp->tx_power;
2228         } else {
2229                 adv_instance = hci_find_adv_instance(hdev, cp->handle);
2230                 if (adv_instance)
2231                         adv_instance->tx_power = rp->tx_power;
2232         }
2233         /* Update adv data as tx power is known now */
2234         hci_update_adv_data(hdev, cp->handle);
2235
2236         hci_dev_unlock(hdev);
2237
2238         return rp->status;
2239 }
2240
2241 #ifdef TIZEN_BT
2242 static u8 hci_cc_enable_rssi(struct hci_dev *hdev, void *data,
2243                              struct sk_buff *skb)
2244 {
2245         struct hci_cc_rsp_enable_rssi *rp = data;
2246
2247         BT_DBG("hci_cc_enable_rssi - %s status 0x%2.2x Event_LE_ext_Opcode 0x%2.2x",
2248                hdev->name, rp->status, rp->le_ext_opcode);
2249
2250         mgmt_enable_rssi_cc(hdev, rp, rp->status);
2251
2252         return rp->status;
2253 }
2254
2255 static u8 hci_cc_get_raw_rssi(struct hci_dev *hdev, void *data,
2256                               struct sk_buff *skb)
2257 {
2258         struct hci_cc_rp_get_raw_rssi *rp = data;
2259
2260         BT_DBG("hci_cc_get_raw_rssi- %s Get Raw Rssi Response[%2.2x %4.4x %2.2X]",
2261                hdev->name, rp->status, rp->conn_handle, rp->rssi_dbm);
2262
2263         mgmt_raw_rssi_response(hdev, rp, rp->status);
2264
2265         return rp->status;
2266 }
2267 #endif
2268
2269 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2270                            struct sk_buff *skb)
2271 {
2272         struct hci_rp_read_rssi *rp = data;
2273         struct hci_conn *conn;
2274
2275         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2276
2277         if (rp->status)
2278                 return rp->status;
2279
2280         hci_dev_lock(hdev);
2281
2282         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2283         if (conn)
2284                 conn->rssi = rp->rssi;
2285
2286         hci_dev_unlock(hdev);
2287
2288         return rp->status;
2289 }
2290
2291 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2292                                struct sk_buff *skb)
2293 {
2294         struct hci_cp_read_tx_power *sent;
2295         struct hci_rp_read_tx_power *rp = data;
2296         struct hci_conn *conn;
2297
2298         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2299
2300         if (rp->status)
2301                 return rp->status;
2302
2303         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2304         if (!sent)
2305                 return rp->status;
2306
2307         hci_dev_lock(hdev);
2308
2309         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2310         if (!conn)
2311                 goto unlock;
2312
2313         switch (sent->type) {
2314         case 0x00:
2315                 conn->tx_power = rp->tx_power;
2316                 break;
2317         case 0x01:
2318                 conn->max_tx_power = rp->tx_power;
2319                 break;
2320         }
2321
2322 unlock:
2323         hci_dev_unlock(hdev);
2324         return rp->status;
2325 }
2326
2327 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2328                                       struct sk_buff *skb)
2329 {
2330         struct hci_ev_status *rp = data;
2331         u8 *mode;
2332
2333         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2334
2335         if (rp->status)
2336                 return rp->status;
2337
2338         mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2339         if (mode)
2340                 hdev->ssp_debug_mode = *mode;
2341
2342         return rp->status;
2343 }
2344
2345 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2346 {
2347         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2348
2349         if (status) {
2350                 hci_conn_check_pending(hdev);
2351                 return;
2352         }
2353
2354         if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY))
2355                 set_bit(HCI_INQUIRY, &hdev->flags);
2356 }
2357
2358 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2359 {
2360         struct hci_cp_create_conn *cp;
2361         struct hci_conn *conn;
2362
2363         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2364
2365         cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2366         if (!cp)
2367                 return;
2368
2369         hci_dev_lock(hdev);
2370
2371         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2372
2373         bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2374
2375         if (status) {
2376                 if (conn && conn->state == BT_CONNECT) {
2377                         if (status != 0x0c || conn->attempt > 2) {
2378                                 conn->state = BT_CLOSED;
2379                                 hci_connect_cfm(conn, status);
2380                                 hci_conn_del(conn);
2381                         } else
2382                                 conn->state = BT_CONNECT2;
2383                 }
2384         } else {
2385                 if (!conn) {
2386                         conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr,
2387                                                   HCI_ROLE_MASTER);
2388                         if (!conn)
2389                                 bt_dev_err(hdev, "no memory for new connection");
2390                 }
2391         }
2392
2393         hci_dev_unlock(hdev);
2394 }
2395
2396 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2397 {
2398         struct hci_cp_add_sco *cp;
2399         struct hci_conn *acl;
2400         struct hci_link *link;
2401         __u16 handle;
2402
2403         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2404
2405         if (!status)
2406                 return;
2407
2408         cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2409         if (!cp)
2410                 return;
2411
2412         handle = __le16_to_cpu(cp->handle);
2413
2414         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2415
2416         hci_dev_lock(hdev);
2417
2418         acl = hci_conn_hash_lookup_handle(hdev, handle);
2419         if (acl) {
2420                 link = list_first_entry_or_null(&acl->link_list,
2421                                                 struct hci_link, list);
2422                 if (link && link->conn) {
2423                         link->conn->state = BT_CLOSED;
2424
2425                         hci_connect_cfm(link->conn, status);
2426                         hci_conn_del(link->conn);
2427                 }
2428         }
2429
2430         hci_dev_unlock(hdev);
2431 }
2432
2433 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2434 {
2435         struct hci_cp_auth_requested *cp;
2436         struct hci_conn *conn;
2437
2438         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2439
2440         if (!status)
2441                 return;
2442
2443         cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2444         if (!cp)
2445                 return;
2446
2447         hci_dev_lock(hdev);
2448
2449         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2450         if (conn) {
2451                 if (conn->state == BT_CONFIG) {
2452                         hci_connect_cfm(conn, status);
2453                         hci_conn_drop(conn);
2454                 }
2455         }
2456
2457         hci_dev_unlock(hdev);
2458 }
2459
2460 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2461 {
2462         struct hci_cp_set_conn_encrypt *cp;
2463         struct hci_conn *conn;
2464
2465         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2466
2467         if (!status)
2468                 return;
2469
2470         cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2471         if (!cp)
2472                 return;
2473
2474         hci_dev_lock(hdev);
2475
2476         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2477         if (conn) {
2478                 if (conn->state == BT_CONFIG) {
2479                         hci_connect_cfm(conn, status);
2480                         hci_conn_drop(conn);
2481                 }
2482         }
2483
2484         hci_dev_unlock(hdev);
2485 }
2486
2487 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2488                                     struct hci_conn *conn)
2489 {
2490         if (conn->state != BT_CONFIG || !conn->out)
2491                 return 0;
2492
2493         if (conn->pending_sec_level == BT_SECURITY_SDP)
2494                 return 0;
2495
2496         /* Only request authentication for SSP connections or non-SSP
2497          * devices with sec_level MEDIUM or HIGH or if MITM protection
2498          * is requested.
2499          */
2500         if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2501             conn->pending_sec_level != BT_SECURITY_FIPS &&
2502             conn->pending_sec_level != BT_SECURITY_HIGH &&
2503             conn->pending_sec_level != BT_SECURITY_MEDIUM)
2504                 return 0;
2505
2506         return 1;
2507 }
2508
2509 static int hci_resolve_name(struct hci_dev *hdev,
2510                                    struct inquiry_entry *e)
2511 {
2512         struct hci_cp_remote_name_req cp;
2513
2514         memset(&cp, 0, sizeof(cp));
2515
2516         bacpy(&cp.bdaddr, &e->data.bdaddr);
2517         cp.pscan_rep_mode = e->data.pscan_rep_mode;
2518         cp.pscan_mode = e->data.pscan_mode;
2519         cp.clock_offset = e->data.clock_offset;
2520
2521         return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2522 }
2523
2524 static bool hci_resolve_next_name(struct hci_dev *hdev)
2525 {
2526         struct discovery_state *discov = &hdev->discovery;
2527         struct inquiry_entry *e;
2528
2529         if (list_empty(&discov->resolve))
2530                 return false;
2531
2532         /* We should stop if we already spent too much time resolving names. */
2533         if (time_after(jiffies, discov->name_resolve_timeout)) {
2534                 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2535                 return false;
2536         }
2537
2538         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2539         if (!e)
2540                 return false;
2541
2542         if (hci_resolve_name(hdev, e) == 0) {
2543                 e->name_state = NAME_PENDING;
2544                 return true;
2545         }
2546
2547         return false;
2548 }
2549
2550 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2551                                    bdaddr_t *bdaddr, u8 *name, u8 name_len)
2552 {
2553         struct discovery_state *discov = &hdev->discovery;
2554         struct inquiry_entry *e;
2555
2556 #ifdef TIZEN_BT
2557         /* Update the mgmt connected state if necessary. Be careful with
2558          * conn objects that exist but are not (yet) connected however.
2559          * Only those in BT_CONFIG or BT_CONNECTED states can be
2560          * considered connected.
2561          */
2562         if (conn &&
2563             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) {
2564                 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2565                         mgmt_device_connected(hdev, conn, name, name_len);
2566                 else
2567                         mgmt_device_name_update(hdev, bdaddr, name, name_len);
2568         }
2569 #else
2570         if (conn &&
2571             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2572             !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2573                 mgmt_device_connected(hdev, conn, name, name_len);
2574 #endif
2575
2576         if (discov->state == DISCOVERY_STOPPED)
2577                 return;
2578
2579         if (discov->state == DISCOVERY_STOPPING)
2580                 goto discov_complete;
2581
2582         if (discov->state != DISCOVERY_RESOLVING)
2583                 return;
2584
2585         e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2586         /* If the device was not found in a list of found devices names of which
2587          * are pending. there is no need to continue resolving a next name as it
2588          * will be done upon receiving another Remote Name Request Complete
2589          * Event */
2590         if (!e)
2591                 return;
2592
2593         list_del(&e->list);
2594
2595         e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2596         mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2597                          name, name_len);
2598
2599         if (hci_resolve_next_name(hdev))
2600                 return;
2601
2602 discov_complete:
2603         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2604 }
2605
2606 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2607 {
2608         struct hci_cp_remote_name_req *cp;
2609         struct hci_conn *conn;
2610
2611         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2612
2613         /* If successful wait for the name req complete event before
2614          * checking for the need to do authentication */
2615         if (!status)
2616                 return;
2617
2618         cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2619         if (!cp)
2620                 return;
2621
2622         hci_dev_lock(hdev);
2623
2624         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2625
2626         if (hci_dev_test_flag(hdev, HCI_MGMT))
2627                 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2628
2629         if (!conn)
2630                 goto unlock;
2631
2632         if (!hci_outgoing_auth_needed(hdev, conn))
2633                 goto unlock;
2634
2635         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2636                 struct hci_cp_auth_requested auth_cp;
2637
2638                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2639
2640                 auth_cp.handle = __cpu_to_le16(conn->handle);
2641                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2642                              sizeof(auth_cp), &auth_cp);
2643         }
2644
2645 unlock:
2646         hci_dev_unlock(hdev);
2647 }
2648
2649 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2650 {
2651         struct hci_cp_read_remote_features *cp;
2652         struct hci_conn *conn;
2653
2654         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2655
2656         if (!status)
2657                 return;
2658
2659         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2660         if (!cp)
2661                 return;
2662
2663         hci_dev_lock(hdev);
2664
2665         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2666         if (conn) {
2667                 if (conn->state == BT_CONFIG) {
2668                         hci_connect_cfm(conn, status);
2669                         hci_conn_drop(conn);
2670                 }
2671         }
2672
2673         hci_dev_unlock(hdev);
2674 }
2675
2676 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2677 {
2678         struct hci_cp_read_remote_ext_features *cp;
2679         struct hci_conn *conn;
2680
2681         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2682
2683         if (!status)
2684                 return;
2685
2686         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2687         if (!cp)
2688                 return;
2689
2690         hci_dev_lock(hdev);
2691
2692         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2693         if (conn) {
2694                 if (conn->state == BT_CONFIG) {
2695                         hci_connect_cfm(conn, status);
2696                         hci_conn_drop(conn);
2697                 }
2698         }
2699
2700         hci_dev_unlock(hdev);
2701 }
2702
2703 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle,
2704                                        __u8 status)
2705 {
2706         struct hci_conn *acl;
2707         struct hci_link *link;
2708
2709         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status);
2710
2711         hci_dev_lock(hdev);
2712
2713         acl = hci_conn_hash_lookup_handle(hdev, handle);
2714         if (acl) {
2715                 link = list_first_entry_or_null(&acl->link_list,
2716                                                 struct hci_link, list);
2717                 if (link && link->conn) {
2718                         link->conn->state = BT_CLOSED;
2719
2720                         hci_connect_cfm(link->conn, status);
2721                         hci_conn_del(link->conn);
2722                 }
2723         }
2724
2725         hci_dev_unlock(hdev);
2726 }
2727
2728 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2729 {
2730         struct hci_cp_setup_sync_conn *cp;
2731
2732         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2733
2734         if (!status)
2735                 return;
2736
2737         cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2738         if (!cp)
2739                 return;
2740
2741         hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2742 }
2743
2744 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2745 {
2746         struct hci_cp_enhanced_setup_sync_conn *cp;
2747
2748         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2749
2750         if (!status)
2751                 return;
2752
2753         cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2754         if (!cp)
2755                 return;
2756
2757         hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2758 }
2759
2760 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2761 {
2762         struct hci_cp_sniff_mode *cp;
2763         struct hci_conn *conn;
2764
2765         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2766
2767         if (!status)
2768                 return;
2769
2770         cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2771         if (!cp)
2772                 return;
2773
2774         hci_dev_lock(hdev);
2775
2776         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2777         if (conn) {
2778                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2779
2780                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2781                         hci_sco_setup(conn, status);
2782         }
2783
2784         hci_dev_unlock(hdev);
2785 }
2786
2787 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2788 {
2789         struct hci_cp_exit_sniff_mode *cp;
2790         struct hci_conn *conn;
2791
2792         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2793
2794         if (!status)
2795                 return;
2796
2797         cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2798         if (!cp)
2799                 return;
2800
2801         hci_dev_lock(hdev);
2802
2803         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2804         if (conn) {
2805                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2806
2807                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2808                         hci_sco_setup(conn, status);
2809         }
2810
2811         hci_dev_unlock(hdev);
2812 }
2813
2814 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2815 {
2816         struct hci_cp_disconnect *cp;
2817         struct hci_conn_params *params;
2818         struct hci_conn *conn;
2819         bool mgmt_conn;
2820
2821         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2822
2823         /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2824          * otherwise cleanup the connection immediately.
2825          */
2826         if (!status && !hdev->suspended)
2827                 return;
2828
2829         cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2830         if (!cp)
2831                 return;
2832
2833         hci_dev_lock(hdev);
2834
2835         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2836         if (!conn)
2837                 goto unlock;
2838
2839         if (status) {
2840                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2841                                        conn->dst_type, status);
2842
2843                 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2844                         hdev->cur_adv_instance = conn->adv_instance;
2845                         hci_enable_advertising(hdev);
2846                 }
2847
2848                 /* Inform sockets conn is gone before we delete it */
2849                 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED);
2850
2851                 goto done;
2852         }
2853
2854         mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2855
2856         if (conn->type == ACL_LINK) {
2857                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2858                         hci_remove_link_key(hdev, &conn->dst);
2859         }
2860
2861         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2862         if (params) {
2863                 switch (params->auto_connect) {
2864                 case HCI_AUTO_CONN_LINK_LOSS:
2865                         if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2866                                 break;
2867                         fallthrough;
2868
2869                 case HCI_AUTO_CONN_DIRECT:
2870                 case HCI_AUTO_CONN_ALWAYS:
2871                         hci_pend_le_list_del_init(params);
2872                         hci_pend_le_list_add(params, &hdev->pend_le_conns);
2873                         break;
2874
2875                 default:
2876                         break;
2877                 }
2878         }
2879
2880         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2881                                  cp->reason, mgmt_conn);
2882
2883         hci_disconn_cfm(conn, cp->reason);
2884
2885 done:
2886         /* If the disconnection failed for any reason, the upper layer
2887          * does not retry to disconnect in current implementation.
2888          * Hence, we need to do some basic cleanup here and re-enable
2889          * advertising if necessary.
2890          */
2891         hci_conn_del(conn);
2892 unlock:
2893         hci_dev_unlock(hdev);
2894 }
2895
2896 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
2897 {
2898         /* When using controller based address resolution, then the new
2899          * address types 0x02 and 0x03 are used. These types need to be
2900          * converted back into either public address or random address type
2901          */
2902         switch (type) {
2903         case ADDR_LE_DEV_PUBLIC_RESOLVED:
2904                 if (resolved)
2905                         *resolved = true;
2906                 return ADDR_LE_DEV_PUBLIC;
2907         case ADDR_LE_DEV_RANDOM_RESOLVED:
2908                 if (resolved)
2909                         *resolved = true;
2910                 return ADDR_LE_DEV_RANDOM;
2911         }
2912
2913         if (resolved)
2914                 *resolved = false;
2915         return type;
2916 }
2917
2918 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2919                               u8 peer_addr_type, u8 own_address_type,
2920                               u8 filter_policy)
2921 {
2922         struct hci_conn *conn;
2923
2924         conn = hci_conn_hash_lookup_le(hdev, peer_addr,
2925                                        peer_addr_type);
2926         if (!conn)
2927                 return;
2928
2929         own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
2930
2931         /* Store the initiator and responder address information which
2932          * is needed for SMP. These values will not change during the
2933          * lifetime of the connection.
2934          */
2935         conn->init_addr_type = own_address_type;
2936         if (own_address_type == ADDR_LE_DEV_RANDOM)
2937                 bacpy(&conn->init_addr, &hdev->random_addr);
2938         else
2939                 bacpy(&conn->init_addr, &hdev->bdaddr);
2940
2941         conn->resp_addr_type = peer_addr_type;
2942         bacpy(&conn->resp_addr, peer_addr);
2943 }
2944
2945 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2946 {
2947         struct hci_cp_le_create_conn *cp;
2948
2949         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2950
2951         /* All connection failure handling is taken care of by the
2952          * hci_conn_failed function which is triggered by the HCI
2953          * request completion callbacks used for connecting.
2954          */
2955         if (status)
2956                 return;
2957
2958         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
2959         if (!cp)
2960                 return;
2961
2962         hci_dev_lock(hdev);
2963
2964         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2965                           cp->own_address_type, cp->filter_policy);
2966
2967         hci_dev_unlock(hdev);
2968 }
2969
2970 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
2971 {
2972         struct hci_cp_le_ext_create_conn *cp;
2973
2974         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2975
2976         /* All connection failure handling is taken care of by the
2977          * hci_conn_failed function which is triggered by the HCI
2978          * request completion callbacks used for connecting.
2979          */
2980         if (status)
2981                 return;
2982
2983         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
2984         if (!cp)
2985                 return;
2986
2987         hci_dev_lock(hdev);
2988
2989         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2990                           cp->own_addr_type, cp->filter_policy);
2991
2992         hci_dev_unlock(hdev);
2993 }
2994
2995 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
2996 {
2997         struct hci_cp_le_read_remote_features *cp;
2998         struct hci_conn *conn;
2999
3000         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3001
3002         if (!status)
3003                 return;
3004
3005         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
3006         if (!cp)
3007                 return;
3008
3009         hci_dev_lock(hdev);
3010
3011         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3012         if (conn) {
3013                 if (conn->state == BT_CONFIG) {
3014                         hci_connect_cfm(conn, status);
3015                         hci_conn_drop(conn);
3016                 }
3017         }
3018
3019         hci_dev_unlock(hdev);
3020 }
3021
3022 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
3023 {
3024         struct hci_cp_le_start_enc *cp;
3025         struct hci_conn *conn;
3026
3027         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3028
3029         if (!status)
3030                 return;
3031
3032         hci_dev_lock(hdev);
3033
3034         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
3035         if (!cp)
3036                 goto unlock;
3037
3038         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3039         if (!conn)
3040                 goto unlock;
3041
3042         if (conn->state != BT_CONNECTED)
3043                 goto unlock;
3044
3045         hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3046         hci_conn_drop(conn);
3047
3048 unlock:
3049         hci_dev_unlock(hdev);
3050 }
3051
3052 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
3053 {
3054         struct hci_cp_switch_role *cp;
3055         struct hci_conn *conn;
3056
3057         BT_DBG("%s status 0x%2.2x", hdev->name, status);
3058
3059         if (!status)
3060                 return;
3061
3062         cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3063         if (!cp)
3064                 return;
3065
3066         hci_dev_lock(hdev);
3067
3068         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3069         if (conn)
3070                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3071
3072         hci_dev_unlock(hdev);
3073 }
3074
3075 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3076                                      struct sk_buff *skb)
3077 {
3078         struct hci_ev_status *ev = data;
3079         struct discovery_state *discov = &hdev->discovery;
3080         struct inquiry_entry *e;
3081
3082         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3083
3084         hci_conn_check_pending(hdev);
3085
3086         if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3087                 return;
3088
3089         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3090         wake_up_bit(&hdev->flags, HCI_INQUIRY);
3091
3092         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3093                 return;
3094
3095         hci_dev_lock(hdev);
3096
3097         if (discov->state != DISCOVERY_FINDING)
3098                 goto unlock;
3099
3100         if (list_empty(&discov->resolve)) {
3101                 /* When BR/EDR inquiry is active and no LE scanning is in
3102                  * progress, then change discovery state to indicate completion.
3103                  *
3104                  * When running LE scanning and BR/EDR inquiry simultaneously
3105                  * and the LE scan already finished, then change the discovery
3106                  * state to indicate completion.
3107                  */
3108                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3109                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3110                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3111                 goto unlock;
3112         }
3113
3114         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3115         if (e && hci_resolve_name(hdev, e) == 0) {
3116                 e->name_state = NAME_PENDING;
3117                 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3118                 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3119         } else {
3120                 /* When BR/EDR inquiry is active and no LE scanning is in
3121                  * progress, then change discovery state to indicate completion.
3122                  *
3123                  * When running LE scanning and BR/EDR inquiry simultaneously
3124                  * and the LE scan already finished, then change the discovery
3125                  * state to indicate completion.
3126                  */
3127                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3128                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3129                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3130         }
3131
3132 unlock:
3133         hci_dev_unlock(hdev);
3134 }
3135
3136 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3137                                    struct sk_buff *skb)
3138 {
3139         struct hci_ev_inquiry_result *ev = edata;
3140         struct inquiry_data data;
3141         int i;
3142
3143         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3144                              flex_array_size(ev, info, ev->num)))
3145                 return;
3146
3147         bt_dev_dbg(hdev, "num %d", ev->num);
3148
3149         if (!ev->num)
3150                 return;
3151
3152         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3153                 return;
3154
3155         hci_dev_lock(hdev);
3156
3157         for (i = 0; i < ev->num; i++) {
3158                 struct inquiry_info *info = &ev->info[i];
3159                 u32 flags;
3160
3161                 bacpy(&data.bdaddr, &info->bdaddr);
3162                 data.pscan_rep_mode     = info->pscan_rep_mode;
3163                 data.pscan_period_mode  = info->pscan_period_mode;
3164                 data.pscan_mode         = info->pscan_mode;
3165                 memcpy(data.dev_class, info->dev_class, 3);
3166                 data.clock_offset       = info->clock_offset;
3167                 data.rssi               = HCI_RSSI_INVALID;
3168                 data.ssp_mode           = 0x00;
3169
3170                 flags = hci_inquiry_cache_update(hdev, &data, false);
3171
3172                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3173                                   info->dev_class, HCI_RSSI_INVALID,
3174                                   flags, NULL, 0, NULL, 0, 0);
3175         }
3176
3177         hci_dev_unlock(hdev);
3178 }
3179
3180 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3181                                   struct sk_buff *skb)
3182 {
3183         struct hci_ev_conn_complete *ev = data;
3184         struct hci_conn *conn;
3185         u8 status = ev->status;
3186
3187         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3188
3189         hci_dev_lock(hdev);
3190
3191         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3192         if (!conn) {
3193                 /* In case of error status and there is no connection pending
3194                  * just unlock as there is nothing to cleanup.
3195                  */
3196                 if (ev->status)
3197                         goto unlock;
3198
3199                 /* Connection may not exist if auto-connected. Check the bredr
3200                  * allowlist to see if this device is allowed to auto connect.
3201                  * If link is an ACL type, create a connection class
3202                  * automatically.
3203                  *
3204                  * Auto-connect will only occur if the event filter is
3205                  * programmed with a given address. Right now, event filter is
3206                  * only used during suspend.
3207                  */
3208                 if (ev->link_type == ACL_LINK &&
3209                     hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3210                                                       &ev->bdaddr,
3211                                                       BDADDR_BREDR)) {
3212                         conn = hci_conn_add_unset(hdev, ev->link_type,
3213                                                   &ev->bdaddr, HCI_ROLE_SLAVE);
3214                         if (!conn) {
3215                                 bt_dev_err(hdev, "no memory for new conn");
3216                                 goto unlock;
3217                         }
3218                 } else {
3219                         if (ev->link_type != SCO_LINK)
3220                                 goto unlock;
3221
3222                         conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3223                                                        &ev->bdaddr);
3224                         if (!conn)
3225                                 goto unlock;
3226
3227                         conn->type = SCO_LINK;
3228                 }
3229         }
3230
3231         /* The HCI_Connection_Complete event is only sent once per connection.
3232          * Processing it more than once per connection can corrupt kernel memory.
3233          *
3234          * As the connection handle is set here for the first time, it indicates
3235          * whether the connection is already set up.
3236          */
3237         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
3238                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3239                 goto unlock;
3240         }
3241
3242         if (!status) {
3243                 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
3244                 if (status)
3245                         goto done;
3246
3247                 if (conn->type == ACL_LINK) {
3248                         conn->state = BT_CONFIG;
3249                         hci_conn_hold(conn);
3250
3251                         if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3252                             !hci_find_link_key(hdev, &ev->bdaddr))
3253                                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3254                         else
3255                                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3256                 } else
3257                         conn->state = BT_CONNECTED;
3258
3259                 hci_debugfs_create_conn(conn);
3260                 hci_conn_add_sysfs(conn);
3261
3262                 if (test_bit(HCI_AUTH, &hdev->flags))
3263                         set_bit(HCI_CONN_AUTH, &conn->flags);
3264
3265                 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3266                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3267
3268                 /* Get remote features */
3269                 if (conn->type == ACL_LINK) {
3270                         struct hci_cp_read_remote_features cp;
3271                         cp.handle = ev->handle;
3272                         hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3273                                      sizeof(cp), &cp);
3274
3275                         hci_update_scan(hdev);
3276                 }
3277
3278                 /* Set packet type for incoming connection */
3279                 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3280                         struct hci_cp_change_conn_ptype cp;
3281                         cp.handle = ev->handle;
3282                         cp.pkt_type = cpu_to_le16(conn->pkt_type);
3283                         hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3284                                      &cp);
3285                 }
3286         }
3287
3288         if (conn->type == ACL_LINK)
3289                 hci_sco_setup(conn, ev->status);
3290
3291 done:
3292         if (status) {
3293                 hci_conn_failed(conn, status);
3294         } else if (ev->link_type == SCO_LINK) {
3295                 switch (conn->setting & SCO_AIRMODE_MASK) {
3296                 case SCO_AIRMODE_CVSD:
3297                         if (hdev->notify)
3298                                 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3299                         break;
3300                 }
3301
3302                 hci_connect_cfm(conn, status);
3303         }
3304
3305 unlock:
3306         hci_dev_unlock(hdev);
3307
3308         hci_conn_check_pending(hdev);
3309 }
3310
3311 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3312 {
3313         struct hci_cp_reject_conn_req cp;
3314
3315         bacpy(&cp.bdaddr, bdaddr);
3316         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3317         hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3318 }
3319
3320 static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3321                                  struct sk_buff *skb)
3322 {
3323         struct hci_ev_conn_request *ev = data;
3324         int mask = hdev->link_mode;
3325         struct inquiry_entry *ie;
3326         struct hci_conn *conn;
3327         __u8 flags = 0;
3328
3329         bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3330
3331         /* Reject incoming connection from device with same BD ADDR against
3332          * CVE-2020-26555
3333          */
3334         if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) {
3335                 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n",
3336                            &ev->bdaddr);
3337                 hci_reject_conn(hdev, &ev->bdaddr);
3338                 return;
3339         }
3340
3341         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3342                                       &flags);
3343
3344         if (!(mask & HCI_LM_ACCEPT)) {
3345                 hci_reject_conn(hdev, &ev->bdaddr);
3346                 return;
3347         }
3348
3349         hci_dev_lock(hdev);
3350
3351         if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3352                                    BDADDR_BREDR)) {
3353                 hci_reject_conn(hdev, &ev->bdaddr);
3354                 goto unlock;
3355         }
3356
3357         /* Require HCI_CONNECTABLE or an accept list entry to accept the
3358          * connection. These features are only touched through mgmt so
3359          * only do the checks if HCI_MGMT is set.
3360          */
3361         if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3362             !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3363             !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3364                                                BDADDR_BREDR)) {
3365                 hci_reject_conn(hdev, &ev->bdaddr);
3366                 goto unlock;
3367         }
3368
3369         /* Connection accepted */
3370
3371         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3372         if (ie)
3373                 memcpy(ie->data.dev_class, ev->dev_class, 3);
3374
3375         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3376                         &ev->bdaddr);
3377         if (!conn) {
3378                 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr,
3379                                           HCI_ROLE_SLAVE);
3380                 if (!conn) {
3381                         bt_dev_err(hdev, "no memory for new connection");
3382                         goto unlock;
3383                 }
3384         }
3385
3386         memcpy(conn->dev_class, ev->dev_class, 3);
3387
3388         hci_dev_unlock(hdev);
3389
3390         if (ev->link_type == ACL_LINK ||
3391             (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3392                 struct hci_cp_accept_conn_req cp;
3393                 conn->state = BT_CONNECT;
3394
3395                 bacpy(&cp.bdaddr, &ev->bdaddr);
3396
3397                 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3398                         cp.role = 0x00; /* Become central */
3399                 else
3400                         cp.role = 0x01; /* Remain peripheral */
3401
3402                 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3403         } else if (!(flags & HCI_PROTO_DEFER)) {
3404                 struct hci_cp_accept_sync_conn_req cp;
3405                 conn->state = BT_CONNECT;
3406
3407                 bacpy(&cp.bdaddr, &ev->bdaddr);
3408                 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3409
3410                 cp.tx_bandwidth   = cpu_to_le32(0x00001f40);
3411                 cp.rx_bandwidth   = cpu_to_le32(0x00001f40);
3412                 cp.max_latency    = cpu_to_le16(0xffff);
3413                 cp.content_format = cpu_to_le16(hdev->voice_setting);
3414                 cp.retrans_effort = 0xff;
3415
3416                 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3417                              &cp);
3418         } else {
3419                 conn->state = BT_CONNECT2;
3420                 hci_connect_cfm(conn, 0);
3421         }
3422
3423         return;
3424 unlock:
3425         hci_dev_unlock(hdev);
3426 }
3427
3428 static u8 hci_to_mgmt_reason(u8 err)
3429 {
3430         switch (err) {
3431         case HCI_ERROR_CONNECTION_TIMEOUT:
3432                 return MGMT_DEV_DISCONN_TIMEOUT;
3433         case HCI_ERROR_REMOTE_USER_TERM:
3434         case HCI_ERROR_REMOTE_LOW_RESOURCES:
3435         case HCI_ERROR_REMOTE_POWER_OFF:
3436                 return MGMT_DEV_DISCONN_REMOTE;
3437         case HCI_ERROR_LOCAL_HOST_TERM:
3438                 return MGMT_DEV_DISCONN_LOCAL_HOST;
3439         default:
3440                 return MGMT_DEV_DISCONN_UNKNOWN;
3441         }
3442 }
3443
3444 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3445                                      struct sk_buff *skb)
3446 {
3447         struct hci_ev_disconn_complete *ev = data;
3448         u8 reason;
3449         struct hci_conn_params *params;
3450         struct hci_conn *conn;
3451         bool mgmt_connected;
3452
3453         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3454
3455         hci_dev_lock(hdev);
3456
3457         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3458         if (!conn)
3459                 goto unlock;
3460
3461         if (ev->status) {
3462                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3463                                        conn->dst_type, ev->status);
3464                 goto unlock;
3465         }
3466
3467         conn->state = BT_CLOSED;
3468
3469         mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3470
3471         if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3472                 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3473         else
3474                 reason = hci_to_mgmt_reason(ev->reason);
3475
3476         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3477                                 reason, mgmt_connected);
3478
3479         if (conn->type == ACL_LINK) {
3480                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3481                         hci_remove_link_key(hdev, &conn->dst);
3482
3483                 hci_update_scan(hdev);
3484         }
3485
3486         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3487         if (params) {
3488                 switch (params->auto_connect) {
3489                 case HCI_AUTO_CONN_LINK_LOSS:
3490                         if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3491                                 break;
3492                         fallthrough;
3493
3494                 case HCI_AUTO_CONN_DIRECT:
3495                 case HCI_AUTO_CONN_ALWAYS:
3496                         hci_pend_le_list_del_init(params);
3497                         hci_pend_le_list_add(params, &hdev->pend_le_conns);
3498                         hci_update_passive_scan(hdev);
3499                         break;
3500
3501                 default:
3502                         break;
3503                 }
3504         }
3505
3506         hci_disconn_cfm(conn, ev->reason);
3507
3508         /* Re-enable advertising if necessary, since it might
3509          * have been disabled by the connection. From the
3510          * HCI_LE_Set_Advertise_Enable command description in
3511          * the core specification (v4.0):
3512          * "The Controller shall continue advertising until the Host
3513          * issues an LE_Set_Advertise_Enable command with
3514          * Advertising_Enable set to 0x00 (Advertising is disabled)
3515          * or until a connection is created or until the Advertising
3516          * is timed out due to Directed Advertising."
3517          */
3518         if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3519                 hdev->cur_adv_instance = conn->adv_instance;
3520                 hci_enable_advertising(hdev);
3521         }
3522
3523         hci_conn_del(conn);
3524
3525 unlock:
3526         hci_dev_unlock(hdev);
3527 }
3528
3529 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3530                                   struct sk_buff *skb)
3531 {
3532         struct hci_ev_auth_complete *ev = data;
3533         struct hci_conn *conn;
3534
3535         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3536
3537         hci_dev_lock(hdev);
3538
3539         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3540         if (!conn)
3541                 goto unlock;
3542
3543         if (!ev->status) {
3544                 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3545                 set_bit(HCI_CONN_AUTH, &conn->flags);
3546                 conn->sec_level = conn->pending_sec_level;
3547         } else {
3548                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3549                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3550
3551                 mgmt_auth_failed(conn, ev->status);
3552         }
3553
3554         clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3555
3556         if (conn->state == BT_CONFIG) {
3557                 if (!ev->status && hci_conn_ssp_enabled(conn)) {
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                         conn->state = BT_CONNECTED;
3565                         hci_connect_cfm(conn, ev->status);
3566                         hci_conn_drop(conn);
3567                 }
3568         } else {
3569                 hci_auth_cfm(conn, ev->status);
3570
3571                 hci_conn_hold(conn);
3572                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3573                 hci_conn_drop(conn);
3574         }
3575
3576         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3577                 if (!ev->status) {
3578                         struct hci_cp_set_conn_encrypt cp;
3579                         cp.handle  = ev->handle;
3580                         cp.encrypt = 0x01;
3581                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3582                                      &cp);
3583                 } else {
3584                         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3585                         hci_encrypt_cfm(conn, ev->status);
3586                 }
3587         }
3588
3589 unlock:
3590         hci_dev_unlock(hdev);
3591 }
3592
3593 static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3594                                 struct sk_buff *skb)
3595 {
3596         struct hci_ev_remote_name *ev = data;
3597         struct hci_conn *conn;
3598
3599         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3600
3601         hci_conn_check_pending(hdev);
3602
3603         hci_dev_lock(hdev);
3604
3605         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3606
3607         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3608                 goto check_auth;
3609
3610         if (ev->status == 0)
3611                 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3612                                        strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3613         else
3614                 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3615
3616 check_auth:
3617         if (!conn)
3618                 goto unlock;
3619
3620         if (!hci_outgoing_auth_needed(hdev, conn))
3621                 goto unlock;
3622
3623         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3624                 struct hci_cp_auth_requested cp;
3625
3626                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3627
3628                 cp.handle = __cpu_to_le16(conn->handle);
3629                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3630         }
3631
3632 unlock:
3633         hci_dev_unlock(hdev);
3634 }
3635
3636 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3637                                    struct sk_buff *skb)
3638 {
3639         struct hci_ev_encrypt_change *ev = data;
3640         struct hci_conn *conn;
3641
3642         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3643
3644         hci_dev_lock(hdev);
3645
3646         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3647         if (!conn)
3648                 goto unlock;
3649
3650         if (!ev->status) {
3651                 if (ev->encrypt) {
3652                         /* Encryption implies authentication */
3653                         set_bit(HCI_CONN_AUTH, &conn->flags);
3654                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3655                         conn->sec_level = conn->pending_sec_level;
3656
3657                         /* P-256 authentication key implies FIPS */
3658                         if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3659                                 set_bit(HCI_CONN_FIPS, &conn->flags);
3660
3661                         if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3662                             conn->type == LE_LINK)
3663                                 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3664                 } else {
3665                         clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3666                         clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3667                 }
3668         }
3669
3670         /* We should disregard the current RPA and generate a new one
3671          * whenever the encryption procedure fails.
3672          */
3673         if (ev->status && conn->type == LE_LINK) {
3674                 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3675                 hci_adv_instances_set_rpa_expired(hdev, true);
3676         }
3677
3678         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3679
3680         /* Check link security requirements are met */
3681         if (!hci_conn_check_link_mode(conn))
3682                 ev->status = HCI_ERROR_AUTH_FAILURE;
3683
3684         if (ev->status && conn->state == BT_CONNECTED) {
3685                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3686                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3687
3688                 /* Notify upper layers so they can cleanup before
3689                  * disconnecting.
3690                  */
3691                 hci_encrypt_cfm(conn, ev->status);
3692                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3693                 hci_conn_drop(conn);
3694                 goto unlock;
3695         }
3696
3697         /* Try reading the encryption key size for encrypted ACL links */
3698         if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3699                 struct hci_cp_read_enc_key_size cp;
3700
3701                 /* Only send HCI_Read_Encryption_Key_Size if the
3702                  * controller really supports it. If it doesn't, assume
3703                  * the default size (16).
3704                  */
3705                 if (!(hdev->commands[20] & 0x10)) {
3706                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3707                         goto notify;
3708                 }
3709
3710                 cp.handle = cpu_to_le16(conn->handle);
3711                 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3712                                  sizeof(cp), &cp)) {
3713                         bt_dev_err(hdev, "sending read key size failed");
3714                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3715                         goto notify;
3716                 }
3717
3718                 goto unlock;
3719         }
3720
3721         /* Set the default Authenticated Payload Timeout after
3722          * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3723          * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3724          * sent when the link is active and Encryption is enabled, the conn
3725          * type can be either LE or ACL and controller must support LMP Ping.
3726          * Ensure for AES-CCM encryption as well.
3727          */
3728         if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3729             test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3730             ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3731              (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3732                 struct hci_cp_write_auth_payload_to cp;
3733
3734                 cp.handle = cpu_to_le16(conn->handle);
3735                 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3736                 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3737                                  sizeof(cp), &cp))
3738                         bt_dev_err(hdev, "write auth payload timeout failed");
3739         }
3740
3741 notify:
3742         hci_encrypt_cfm(conn, ev->status);
3743
3744 unlock:
3745         hci_dev_unlock(hdev);
3746 }
3747
3748 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3749                                              struct sk_buff *skb)
3750 {
3751         struct hci_ev_change_link_key_complete *ev = data;
3752         struct hci_conn *conn;
3753
3754         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3755
3756         hci_dev_lock(hdev);
3757
3758         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3759         if (conn) {
3760                 if (!ev->status)
3761                         set_bit(HCI_CONN_SECURE, &conn->flags);
3762
3763                 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3764
3765                 hci_key_change_cfm(conn, ev->status);
3766         }
3767
3768         hci_dev_unlock(hdev);
3769 }
3770
3771 static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3772                                     struct sk_buff *skb)
3773 {
3774         struct hci_ev_remote_features *ev = data;
3775         struct hci_conn *conn;
3776
3777         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3778
3779         hci_dev_lock(hdev);
3780
3781         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3782         if (!conn)
3783                 goto unlock;
3784
3785         if (!ev->status)
3786                 memcpy(conn->features[0], ev->features, 8);
3787
3788         if (conn->state != BT_CONFIG)
3789                 goto unlock;
3790
3791         if (!ev->status && lmp_ext_feat_capable(hdev) &&
3792             lmp_ext_feat_capable(conn)) {
3793                 struct hci_cp_read_remote_ext_features cp;
3794                 cp.handle = ev->handle;
3795                 cp.page = 0x01;
3796                 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3797                              sizeof(cp), &cp);
3798                 goto unlock;
3799         }
3800
3801         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3802                 struct hci_cp_remote_name_req cp;
3803                 memset(&cp, 0, sizeof(cp));
3804                 bacpy(&cp.bdaddr, &conn->dst);
3805                 cp.pscan_rep_mode = 0x02;
3806                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3807         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3808                 mgmt_device_connected(hdev, conn, NULL, 0);
3809
3810         if (!hci_outgoing_auth_needed(hdev, conn)) {
3811                 conn->state = BT_CONNECTED;
3812                 hci_connect_cfm(conn, ev->status);
3813                 hci_conn_drop(conn);
3814         }
3815
3816 unlock:
3817         hci_dev_unlock(hdev);
3818 }
3819
3820 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3821 {
3822         cancel_delayed_work(&hdev->cmd_timer);
3823
3824         rcu_read_lock();
3825         if (!test_bit(HCI_RESET, &hdev->flags)) {
3826                 if (ncmd) {
3827                         cancel_delayed_work(&hdev->ncmd_timer);
3828                         atomic_set(&hdev->cmd_cnt, 1);
3829                 } else {
3830                         if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3831                                 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3832                                                    HCI_NCMD_TIMEOUT);
3833                 }
3834         }
3835         rcu_read_unlock();
3836 }
3837
3838 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3839                                         struct sk_buff *skb)
3840 {
3841         struct hci_rp_le_read_buffer_size_v2 *rp = data;
3842
3843         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3844
3845         if (rp->status)
3846                 return rp->status;
3847
3848         hdev->le_mtu   = __le16_to_cpu(rp->acl_mtu);
3849         hdev->le_pkts  = rp->acl_max_pkt;
3850         hdev->iso_mtu  = __le16_to_cpu(rp->iso_mtu);
3851         hdev->iso_pkts = rp->iso_max_pkt;
3852
3853         hdev->le_cnt  = hdev->le_pkts;
3854         hdev->iso_cnt = hdev->iso_pkts;
3855
3856         BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3857                hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3858
3859         return rp->status;
3860 }
3861
3862 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status)
3863 {
3864         struct hci_conn *conn, *tmp;
3865
3866         lockdep_assert_held(&hdev->lock);
3867
3868         list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
3869                 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) ||
3870                     conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig)
3871                         continue;
3872
3873                 if (HCI_CONN_HANDLE_UNSET(conn->handle))
3874                         hci_conn_failed(conn, status);
3875         }
3876 }
3877
3878 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3879                                    struct sk_buff *skb)
3880 {
3881         struct hci_rp_le_set_cig_params *rp = data;
3882         struct hci_cp_le_set_cig_params *cp;
3883         struct hci_conn *conn;
3884         u8 status = rp->status;
3885         bool pending = false;
3886         int i;
3887
3888         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3889
3890         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS);
3891         if (!rp->status && (!cp || rp->num_handles != cp->num_cis ||
3892                             rp->cig_id != cp->cig_id)) {
3893                 bt_dev_err(hdev, "unexpected Set CIG Parameters response data");
3894                 status = HCI_ERROR_UNSPECIFIED;
3895         }
3896
3897         hci_dev_lock(hdev);
3898
3899         /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554
3900          *
3901          * If the Status return parameter is non-zero, then the state of the CIG
3902          * and its CIS configurations shall not be changed by the command. If
3903          * the CIG did not already exist, it shall not be created.
3904          */
3905         if (status) {
3906                 /* Keep current configuration, fail only the unbound CIS */
3907                 hci_unbound_cis_failed(hdev, rp->cig_id, status);
3908                 goto unlock;
3909         }
3910
3911         /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553
3912          *
3913          * If the Status return parameter is zero, then the Controller shall
3914          * set the Connection_Handle arrayed return parameter to the connection
3915          * handle(s) corresponding to the CIS configurations specified in
3916          * the CIS_IDs command parameter, in the same order.
3917          */
3918         for (i = 0; i < rp->num_handles; ++i) {
3919                 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id,
3920                                                 cp->cis[i].cis_id);
3921                 if (!conn || !bacmp(&conn->dst, BDADDR_ANY))
3922                         continue;
3923
3924                 if (conn->state != BT_BOUND && conn->state != BT_CONNECT)
3925                         continue;
3926
3927                 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i])))
3928                         continue;
3929
3930                 if (conn->state == BT_CONNECT)
3931                         pending = true;
3932         }
3933
3934 unlock:
3935         if (pending)
3936                 hci_le_create_cis_pending(hdev);
3937
3938         hci_dev_unlock(hdev);
3939
3940         return rp->status;
3941 }
3942
3943 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3944                                    struct sk_buff *skb)
3945 {
3946         struct hci_rp_le_setup_iso_path *rp = data;
3947         struct hci_cp_le_setup_iso_path *cp;
3948         struct hci_conn *conn;
3949
3950         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3951
3952         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3953         if (!cp)
3954                 return rp->status;
3955
3956         hci_dev_lock(hdev);
3957
3958         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3959         if (!conn)
3960                 goto unlock;
3961
3962         if (rp->status) {
3963                 hci_connect_cfm(conn, rp->status);
3964                 hci_conn_del(conn);
3965                 goto unlock;
3966         }
3967
3968         switch (cp->direction) {
3969         /* Input (Host to Controller) */
3970         case 0x00:
3971                 /* Only confirm connection if output only */
3972                 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu)
3973                         hci_connect_cfm(conn, rp->status);
3974                 break;
3975         /* Output (Controller to Host) */
3976         case 0x01:
3977                 /* Confirm connection since conn->iso_qos is always configured
3978                  * last.
3979                  */
3980                 hci_connect_cfm(conn, rp->status);
3981                 break;
3982         }
3983
3984 unlock:
3985         hci_dev_unlock(hdev);
3986         return rp->status;
3987 }
3988
3989 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
3990 {
3991         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3992 }
3993
3994 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
3995                                    struct sk_buff *skb)
3996 {
3997         struct hci_ev_status *rp = data;
3998         struct hci_cp_le_set_per_adv_params *cp;
3999
4000         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4001
4002         if (rp->status)
4003                 return rp->status;
4004
4005         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
4006         if (!cp)
4007                 return rp->status;
4008
4009         /* TODO: set the conn state */
4010         return rp->status;
4011 }
4012
4013 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
4014                                        struct sk_buff *skb)
4015 {
4016         struct hci_ev_status *rp = data;
4017         struct hci_cp_le_set_per_adv_enable *cp;
4018         struct adv_info *adv = NULL, *n;
4019         u8 per_adv_cnt = 0;
4020
4021         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4022
4023         if (rp->status)
4024                 return rp->status;
4025
4026         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
4027         if (!cp)
4028                 return rp->status;
4029
4030         hci_dev_lock(hdev);
4031
4032         adv = hci_find_adv_instance(hdev, cp->handle);
4033
4034         if (cp->enable) {
4035                 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
4036
4037                 if (adv)
4038                         adv->enabled = true;
4039         } else {
4040                 /* If just one instance was disabled check if there are
4041                  * any other instance enabled before clearing HCI_LE_PER_ADV.
4042                  * The current periodic adv instance will be marked as
4043                  * disabled once extended advertising is also disabled.
4044                  */
4045                 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
4046                                          list) {
4047                         if (adv->periodic && adv->enabled)
4048                                 per_adv_cnt++;
4049                 }
4050
4051                 if (per_adv_cnt > 1)
4052                         goto unlock;
4053
4054                 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
4055         }
4056
4057 unlock:
4058         hci_dev_unlock(hdev);
4059
4060         return rp->status;
4061 }
4062
4063 #define HCI_CC_VL(_op, _func, _min, _max) \
4064 { \
4065         .op = _op, \
4066         .func = _func, \
4067         .min_len = _min, \
4068         .max_len = _max, \
4069 }
4070
4071 #define HCI_CC(_op, _func, _len) \
4072         HCI_CC_VL(_op, _func, _len, _len)
4073
4074 #define HCI_CC_STATUS(_op, _func) \
4075         HCI_CC(_op, _func, sizeof(struct hci_ev_status))
4076
4077 static const struct hci_cc {
4078         u16  op;
4079         u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4080         u16  min_len;
4081         u16  max_len;
4082 } hci_cc_table[] = {
4083         HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4084         HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4085         HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4086         HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4087                       hci_cc_remote_name_req_cancel),
4088         HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4089                sizeof(struct hci_rp_role_discovery)),
4090         HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4091                sizeof(struct hci_rp_read_link_policy)),
4092         HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4093                sizeof(struct hci_rp_write_link_policy)),
4094         HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4095                sizeof(struct hci_rp_read_def_link_policy)),
4096         HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4097                       hci_cc_write_def_link_policy),
4098         HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4099         HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4100                sizeof(struct hci_rp_read_stored_link_key)),
4101         HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4102                sizeof(struct hci_rp_delete_stored_link_key)),
4103         HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4104         HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4105                sizeof(struct hci_rp_read_local_name)),
4106         HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4107         HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4108         HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4109         HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4110         HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4111                sizeof(struct hci_rp_read_class_of_dev)),
4112         HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4113         HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4114                sizeof(struct hci_rp_read_voice_setting)),
4115         HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4116         HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4117                sizeof(struct hci_rp_read_num_supported_iac)),
4118         HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4119         HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4120         HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4121                sizeof(struct hci_rp_read_auth_payload_to)),
4122         HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4123                sizeof(struct hci_rp_write_auth_payload_to)),
4124         HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4125                sizeof(struct hci_rp_read_local_version)),
4126         HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4127                sizeof(struct hci_rp_read_local_commands)),
4128         HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4129                sizeof(struct hci_rp_read_local_features)),
4130         HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4131                sizeof(struct hci_rp_read_local_ext_features)),
4132         HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4133                sizeof(struct hci_rp_read_buffer_size)),
4134         HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4135                sizeof(struct hci_rp_read_bd_addr)),
4136         HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4137                sizeof(struct hci_rp_read_local_pairing_opts)),
4138         HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4139                sizeof(struct hci_rp_read_page_scan_activity)),
4140         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4141                       hci_cc_write_page_scan_activity),
4142         HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4143                sizeof(struct hci_rp_read_page_scan_type)),
4144         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4145         HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4146                sizeof(struct hci_rp_read_data_block_size)),
4147         HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4148                sizeof(struct hci_rp_read_flow_control_mode)),
4149         HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4150                sizeof(struct hci_rp_read_local_amp_info)),
4151         HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4152                sizeof(struct hci_rp_read_clock)),
4153         HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4154                sizeof(struct hci_rp_read_enc_key_size)),
4155         HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4156                sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4157         HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4158                hci_cc_read_def_err_data_reporting,
4159                sizeof(struct hci_rp_read_def_err_data_reporting)),
4160         HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4161                       hci_cc_write_def_err_data_reporting),
4162         HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4163                sizeof(struct hci_rp_pin_code_reply)),
4164         HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4165                sizeof(struct hci_rp_pin_code_neg_reply)),
4166         HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4167                sizeof(struct hci_rp_read_local_oob_data)),
4168         HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4169                sizeof(struct hci_rp_read_local_oob_ext_data)),
4170         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4171                sizeof(struct hci_rp_le_read_buffer_size)),
4172         HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4173                sizeof(struct hci_rp_le_read_local_features)),
4174         HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4175                sizeof(struct hci_rp_le_read_adv_tx_power)),
4176         HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4177                sizeof(struct hci_rp_user_confirm_reply)),
4178         HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4179                sizeof(struct hci_rp_user_confirm_reply)),
4180         HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4181                sizeof(struct hci_rp_user_confirm_reply)),
4182         HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4183                sizeof(struct hci_rp_user_confirm_reply)),
4184         HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4185         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4186         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4187         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4188         HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4189                hci_cc_le_read_accept_list_size,
4190                sizeof(struct hci_rp_le_read_accept_list_size)),
4191         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4192         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4193                       hci_cc_le_add_to_accept_list),
4194         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4195                       hci_cc_le_del_from_accept_list),
4196         HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4197                sizeof(struct hci_rp_le_read_supported_states)),
4198         HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4199                sizeof(struct hci_rp_le_read_def_data_len)),
4200         HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4201                       hci_cc_le_write_def_data_len),
4202         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4203                       hci_cc_le_add_to_resolv_list),
4204         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4205                       hci_cc_le_del_from_resolv_list),
4206         HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4207                       hci_cc_le_clear_resolv_list),
4208         HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4209                sizeof(struct hci_rp_le_read_resolv_list_size)),
4210         HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4211                       hci_cc_le_set_addr_resolution_enable),
4212         HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4213                sizeof(struct hci_rp_le_read_max_data_len)),
4214         HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4215                       hci_cc_write_le_host_supported),
4216         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4217         HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4218                sizeof(struct hci_rp_read_rssi)),
4219         HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4220                sizeof(struct hci_rp_read_tx_power)),
4221         HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4222         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4223                       hci_cc_le_set_ext_scan_param),
4224         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4225                       hci_cc_le_set_ext_scan_enable),
4226         HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4227         HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4228                hci_cc_le_read_num_adv_sets,
4229                sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4230         HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4231                sizeof(struct hci_rp_le_set_ext_adv_params)),
4232         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4233                       hci_cc_le_set_ext_adv_enable),
4234         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4235                       hci_cc_le_set_adv_set_random_addr),
4236         HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4237         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4238         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4239         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4240                       hci_cc_le_set_per_adv_enable),
4241         HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4242                sizeof(struct hci_rp_le_read_transmit_power)),
4243 #ifdef TIZEN_BT
4244         HCI_CC(HCI_OP_ENABLE_RSSI, hci_cc_enable_rssi,
4245                sizeof(struct hci_cc_rsp_enable_rssi)),
4246         HCI_CC(HCI_OP_GET_RAW_RSSI, hci_cc_get_raw_rssi,
4247                sizeof(struct hci_cc_rp_get_raw_rssi)),
4248 #endif
4249         HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4250         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4251                sizeof(struct hci_rp_le_read_buffer_size_v2)),
4252         HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4253                   sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4254         HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4255                sizeof(struct hci_rp_le_setup_iso_path)),
4256 };
4257
4258 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4259                       struct sk_buff *skb)
4260 {
4261         void *data;
4262
4263         if (skb->len < cc->min_len) {
4264                 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4265                            cc->op, skb->len, cc->min_len);
4266                 return HCI_ERROR_UNSPECIFIED;
4267         }
4268
4269         /* Just warn if the length is over max_len size it still be possible to
4270          * partially parse the cc so leave to callback to decide if that is
4271          * acceptable.
4272          */
4273         if (skb->len > cc->max_len)
4274                 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4275                             cc->op, skb->len, cc->max_len);
4276
4277         data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4278         if (!data)
4279                 return HCI_ERROR_UNSPECIFIED;
4280
4281         return cc->func(hdev, data, skb);
4282 }
4283
4284 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4285                                  struct sk_buff *skb, u16 *opcode, u8 *status,
4286                                  hci_req_complete_t *req_complete,
4287                                  hci_req_complete_skb_t *req_complete_skb)
4288 {
4289         struct hci_ev_cmd_complete *ev = data;
4290         int i;
4291
4292         *opcode = __le16_to_cpu(ev->opcode);
4293
4294         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4295
4296         for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4297                 if (hci_cc_table[i].op == *opcode) {
4298                         *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4299                         break;
4300                 }
4301         }
4302
4303         if (i == ARRAY_SIZE(hci_cc_table)) {
4304                 /* Unknown opcode, assume byte 0 contains the status, so
4305                  * that e.g. __hci_cmd_sync() properly returns errors
4306                  * for vendor specific commands send by HCI drivers.
4307                  * If a vendor doesn't actually follow this convention we may
4308                  * need to introduce a vendor CC table in order to properly set
4309                  * the status.
4310                  */
4311                 *status = skb->data[0];
4312         }
4313
4314         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4315
4316         hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4317                              req_complete_skb);
4318
4319         if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4320                 bt_dev_err(hdev,
4321                            "unexpected event for opcode 0x%4.4x", *opcode);
4322                 return;
4323         }
4324
4325         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4326                 queue_work(hdev->workqueue, &hdev->cmd_work);
4327 }
4328
4329 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4330 {
4331         struct hci_cp_le_create_cis *cp;
4332         bool pending = false;
4333         int i;
4334
4335         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4336
4337         if (!status)
4338                 return;
4339
4340         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4341         if (!cp)
4342                 return;
4343
4344         hci_dev_lock(hdev);
4345
4346         /* Remove connection if command failed */
4347         for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4348                 struct hci_conn *conn;
4349                 u16 handle;
4350
4351                 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4352
4353                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4354                 if (conn) {
4355                         if (test_and_clear_bit(HCI_CONN_CREATE_CIS,
4356                                                &conn->flags))
4357                                 pending = true;
4358                         conn->state = BT_CLOSED;
4359                         hci_connect_cfm(conn, status);
4360                         hci_conn_del(conn);
4361                 }
4362         }
4363
4364         if (pending)
4365                 hci_le_create_cis_pending(hdev);
4366
4367         hci_dev_unlock(hdev);
4368 }
4369
4370 #define HCI_CS(_op, _func) \
4371 { \
4372         .op = _op, \
4373         .func = _func, \
4374 }
4375
4376 static const struct hci_cs {
4377         u16  op;
4378         void (*func)(struct hci_dev *hdev, __u8 status);
4379 } hci_cs_table[] = {
4380         HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4381         HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4382         HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4383         HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4384         HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4385         HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4386         HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4387         HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4388         HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4389                hci_cs_read_remote_ext_features),
4390         HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4391         HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4392                hci_cs_enhanced_setup_sync_conn),
4393         HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4394         HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4395         HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4396         HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4397         HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4398         HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4399         HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4400         HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4401         HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4402 };
4403
4404 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4405                                struct sk_buff *skb, u16 *opcode, u8 *status,
4406                                hci_req_complete_t *req_complete,
4407                                hci_req_complete_skb_t *req_complete_skb)
4408 {
4409         struct hci_ev_cmd_status *ev = data;
4410         int i;
4411
4412         *opcode = __le16_to_cpu(ev->opcode);
4413         *status = ev->status;
4414
4415         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4416
4417         for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4418                 if (hci_cs_table[i].op == *opcode) {
4419                         hci_cs_table[i].func(hdev, ev->status);
4420                         break;
4421                 }
4422         }
4423
4424         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4425
4426         /* Indicate request completion if the command failed. Also, if
4427          * we're not waiting for a special event and we get a success
4428          * command status we should try to flag the request as completed
4429          * (since for this kind of commands there will not be a command
4430          * complete event).
4431          */
4432         if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4433                 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4434                                      req_complete_skb);
4435                 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4436                         bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4437                                    *opcode);
4438                         return;
4439                 }
4440         }
4441
4442         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4443                 queue_work(hdev->workqueue, &hdev->cmd_work);
4444 }
4445
4446 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4447                                    struct sk_buff *skb)
4448 {
4449         struct hci_ev_hardware_error *ev = data;
4450
4451         bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4452
4453         hdev->hw_error_code = ev->code;
4454
4455         queue_work(hdev->req_workqueue, &hdev->error_reset);
4456 }
4457
4458 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4459                                 struct sk_buff *skb)
4460 {
4461         struct hci_ev_role_change *ev = data;
4462         struct hci_conn *conn;
4463
4464         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4465
4466         hci_dev_lock(hdev);
4467
4468         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4469         if (conn) {
4470                 if (!ev->status)
4471                         conn->role = ev->role;
4472
4473                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4474
4475                 hci_role_switch_cfm(conn, ev->status, ev->role);
4476         }
4477
4478         hci_dev_unlock(hdev);
4479 }
4480
4481 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4482                                   struct sk_buff *skb)
4483 {
4484         struct hci_ev_num_comp_pkts *ev = data;
4485         int i;
4486
4487         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4488                              flex_array_size(ev, handles, ev->num)))
4489                 return;
4490
4491         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4492                 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4493                 return;
4494         }
4495
4496         bt_dev_dbg(hdev, "num %d", ev->num);
4497
4498         for (i = 0; i < ev->num; i++) {
4499                 struct hci_comp_pkts_info *info = &ev->handles[i];
4500                 struct hci_conn *conn;
4501                 __u16  handle, count;
4502
4503                 handle = __le16_to_cpu(info->handle);
4504                 count  = __le16_to_cpu(info->count);
4505
4506                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4507                 if (!conn)
4508                         continue;
4509
4510                 conn->sent -= count;
4511
4512                 switch (conn->type) {
4513                 case ACL_LINK:
4514                         hdev->acl_cnt += count;
4515                         if (hdev->acl_cnt > hdev->acl_pkts)
4516                                 hdev->acl_cnt = hdev->acl_pkts;
4517                         break;
4518
4519                 case LE_LINK:
4520                         if (hdev->le_pkts) {
4521                                 hdev->le_cnt += count;
4522                                 if (hdev->le_cnt > hdev->le_pkts)
4523                                         hdev->le_cnt = hdev->le_pkts;
4524                         } else {
4525                                 hdev->acl_cnt += count;
4526                                 if (hdev->acl_cnt > hdev->acl_pkts)
4527                                         hdev->acl_cnt = hdev->acl_pkts;
4528                         }
4529                         break;
4530
4531                 case SCO_LINK:
4532                         hdev->sco_cnt += count;
4533                         if (hdev->sco_cnt > hdev->sco_pkts)
4534                                 hdev->sco_cnt = hdev->sco_pkts;
4535                         break;
4536
4537                 case ISO_LINK:
4538                         if (hdev->iso_pkts) {
4539                                 hdev->iso_cnt += count;
4540                                 if (hdev->iso_cnt > hdev->iso_pkts)
4541                                         hdev->iso_cnt = hdev->iso_pkts;
4542                         } else if (hdev->le_pkts) {
4543                                 hdev->le_cnt += count;
4544                                 if (hdev->le_cnt > hdev->le_pkts)
4545                                         hdev->le_cnt = hdev->le_pkts;
4546                         } else {
4547                                 hdev->acl_cnt += count;
4548                                 if (hdev->acl_cnt > hdev->acl_pkts)
4549                                         hdev->acl_cnt = hdev->acl_pkts;
4550                         }
4551                         break;
4552
4553                 default:
4554                         bt_dev_err(hdev, "unknown type %d conn %p",
4555                                    conn->type, conn);
4556                         break;
4557                 }
4558         }
4559
4560         queue_work(hdev->workqueue, &hdev->tx_work);
4561 }
4562
4563 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4564                                                  __u16 handle)
4565 {
4566         struct hci_chan *chan;
4567
4568         switch (hdev->dev_type) {
4569         case HCI_PRIMARY:
4570                 return hci_conn_hash_lookup_handle(hdev, handle);
4571         case HCI_AMP:
4572                 chan = hci_chan_lookup_handle(hdev, handle);
4573                 if (chan)
4574                         return chan->conn;
4575                 break;
4576         default:
4577                 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4578                 break;
4579         }
4580
4581         return NULL;
4582 }
4583
4584 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4585                                     struct sk_buff *skb)
4586 {
4587         struct hci_ev_num_comp_blocks *ev = data;
4588         int i;
4589
4590         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4591                              flex_array_size(ev, handles, ev->num_hndl)))
4592                 return;
4593
4594         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4595                 bt_dev_err(hdev, "wrong event for mode %d",
4596                            hdev->flow_ctl_mode);
4597                 return;
4598         }
4599
4600         bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4601                    ev->num_hndl);
4602
4603         for (i = 0; i < ev->num_hndl; i++) {
4604                 struct hci_comp_blocks_info *info = &ev->handles[i];
4605                 struct hci_conn *conn = NULL;
4606                 __u16  handle, block_count;
4607
4608                 handle = __le16_to_cpu(info->handle);
4609                 block_count = __le16_to_cpu(info->blocks);
4610
4611                 conn = __hci_conn_lookup_handle(hdev, handle);
4612                 if (!conn)
4613                         continue;
4614
4615                 conn->sent -= block_count;
4616
4617                 switch (conn->type) {
4618                 case ACL_LINK:
4619                 case AMP_LINK:
4620                         hdev->block_cnt += block_count;
4621                         if (hdev->block_cnt > hdev->num_blocks)
4622                                 hdev->block_cnt = hdev->num_blocks;
4623                         break;
4624
4625                 default:
4626                         bt_dev_err(hdev, "unknown type %d conn %p",
4627                                    conn->type, conn);
4628                         break;
4629                 }
4630         }
4631
4632         queue_work(hdev->workqueue, &hdev->tx_work);
4633 }
4634
4635 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4636                                 struct sk_buff *skb)
4637 {
4638         struct hci_ev_mode_change *ev = data;
4639         struct hci_conn *conn;
4640
4641         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4642
4643         hci_dev_lock(hdev);
4644
4645         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4646         if (conn) {
4647                 conn->mode = ev->mode;
4648
4649                 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4650                                         &conn->flags)) {
4651                         if (conn->mode == HCI_CM_ACTIVE)
4652                                 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4653                         else
4654                                 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4655                 }
4656
4657                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4658                         hci_sco_setup(conn, ev->status);
4659         }
4660
4661         hci_dev_unlock(hdev);
4662 }
4663
4664 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4665                                      struct sk_buff *skb)
4666 {
4667         struct hci_ev_pin_code_req *ev = data;
4668         struct hci_conn *conn;
4669
4670         bt_dev_dbg(hdev, "");
4671
4672         hci_dev_lock(hdev);
4673
4674         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4675         if (!conn)
4676                 goto unlock;
4677
4678         if (conn->state == BT_CONNECTED) {
4679                 hci_conn_hold(conn);
4680                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4681                 hci_conn_drop(conn);
4682         }
4683
4684         if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4685             !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4686                 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4687                              sizeof(ev->bdaddr), &ev->bdaddr);
4688         } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4689                 u8 secure;
4690
4691                 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4692                         secure = 1;
4693                 else
4694                         secure = 0;
4695
4696                 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4697         }
4698
4699 unlock:
4700         hci_dev_unlock(hdev);
4701 }
4702
4703 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4704 {
4705         if (key_type == HCI_LK_CHANGED_COMBINATION)
4706                 return;
4707
4708         conn->pin_length = pin_len;
4709         conn->key_type = key_type;
4710
4711         switch (key_type) {
4712         case HCI_LK_LOCAL_UNIT:
4713         case HCI_LK_REMOTE_UNIT:
4714         case HCI_LK_DEBUG_COMBINATION:
4715                 return;
4716         case HCI_LK_COMBINATION:
4717                 if (pin_len == 16)
4718                         conn->pending_sec_level = BT_SECURITY_HIGH;
4719                 else
4720                         conn->pending_sec_level = BT_SECURITY_MEDIUM;
4721                 break;
4722         case HCI_LK_UNAUTH_COMBINATION_P192:
4723         case HCI_LK_UNAUTH_COMBINATION_P256:
4724                 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4725                 break;
4726         case HCI_LK_AUTH_COMBINATION_P192:
4727                 conn->pending_sec_level = BT_SECURITY_HIGH;
4728                 break;
4729         case HCI_LK_AUTH_COMBINATION_P256:
4730                 conn->pending_sec_level = BT_SECURITY_FIPS;
4731                 break;
4732         }
4733 }
4734
4735 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4736                                      struct sk_buff *skb)
4737 {
4738         struct hci_ev_link_key_req *ev = data;
4739         struct hci_cp_link_key_reply cp;
4740         struct hci_conn *conn;
4741         struct link_key *key;
4742
4743         bt_dev_dbg(hdev, "");
4744
4745         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4746                 return;
4747
4748         hci_dev_lock(hdev);
4749
4750         key = hci_find_link_key(hdev, &ev->bdaddr);
4751         if (!key) {
4752                 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4753                 goto not_found;
4754         }
4755
4756         bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4757
4758         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4759         if (conn) {
4760                 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4761
4762                 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4763                      key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4764                     conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4765                         bt_dev_dbg(hdev, "ignoring unauthenticated key");
4766                         goto not_found;
4767                 }
4768
4769                 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4770                     (conn->pending_sec_level == BT_SECURITY_HIGH ||
4771                      conn->pending_sec_level == BT_SECURITY_FIPS)) {
4772                         bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4773                         goto not_found;
4774                 }
4775
4776                 conn_set_key(conn, key->type, key->pin_len);
4777         }
4778
4779         bacpy(&cp.bdaddr, &ev->bdaddr);
4780         memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4781
4782         hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4783
4784         hci_dev_unlock(hdev);
4785
4786         return;
4787
4788 not_found:
4789         hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4790         hci_dev_unlock(hdev);
4791 }
4792
4793 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4794                                     struct sk_buff *skb)
4795 {
4796         struct hci_ev_link_key_notify *ev = data;
4797         struct hci_conn *conn;
4798         struct link_key *key;
4799         bool persistent;
4800         u8 pin_len = 0;
4801
4802         bt_dev_dbg(hdev, "");
4803
4804         hci_dev_lock(hdev);
4805
4806         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4807         if (!conn)
4808                 goto unlock;
4809
4810         /* Ignore NULL link key against CVE-2020-26555 */
4811         if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) {
4812                 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR",
4813                            &ev->bdaddr);
4814                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
4815                 hci_conn_drop(conn);
4816                 goto unlock;
4817         }
4818
4819         hci_conn_hold(conn);
4820         conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4821         hci_conn_drop(conn);
4822
4823         set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4824         conn_set_key(conn, ev->key_type, conn->pin_length);
4825
4826         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4827                 goto unlock;
4828
4829         key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4830                                 ev->key_type, pin_len, &persistent);
4831         if (!key)
4832                 goto unlock;
4833
4834         /* Update connection information since adding the key will have
4835          * fixed up the type in the case of changed combination keys.
4836          */
4837         if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4838                 conn_set_key(conn, key->type, key->pin_len);
4839
4840         mgmt_new_link_key(hdev, key, persistent);
4841
4842         /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4843          * is set. If it's not set simply remove the key from the kernel
4844          * list (we've still notified user space about it but with
4845          * store_hint being 0).
4846          */
4847         if (key->type == HCI_LK_DEBUG_COMBINATION &&
4848             !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4849                 list_del_rcu(&key->list);
4850                 kfree_rcu(key, rcu);
4851                 goto unlock;
4852         }
4853
4854         if (persistent)
4855                 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4856         else
4857                 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4858
4859 unlock:
4860         hci_dev_unlock(hdev);
4861 }
4862
4863 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4864                                  struct sk_buff *skb)
4865 {
4866         struct hci_ev_clock_offset *ev = data;
4867         struct hci_conn *conn;
4868
4869         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4870
4871         hci_dev_lock(hdev);
4872
4873         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4874         if (conn && !ev->status) {
4875                 struct inquiry_entry *ie;
4876
4877                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4878                 if (ie) {
4879                         ie->data.clock_offset = ev->clock_offset;
4880                         ie->timestamp = jiffies;
4881                 }
4882         }
4883
4884         hci_dev_unlock(hdev);
4885 }
4886
4887 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4888                                     struct sk_buff *skb)
4889 {
4890         struct hci_ev_pkt_type_change *ev = data;
4891         struct hci_conn *conn;
4892
4893         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4894
4895         hci_dev_lock(hdev);
4896
4897         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4898         if (conn && !ev->status)
4899                 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4900
4901         hci_dev_unlock(hdev);
4902 }
4903
4904 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4905                                    struct sk_buff *skb)
4906 {
4907         struct hci_ev_pscan_rep_mode *ev = data;
4908         struct inquiry_entry *ie;
4909
4910         bt_dev_dbg(hdev, "");
4911
4912         hci_dev_lock(hdev);
4913
4914         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4915         if (ie) {
4916                 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4917                 ie->timestamp = jiffies;
4918         }
4919
4920         hci_dev_unlock(hdev);
4921 }
4922
4923 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4924                                              struct sk_buff *skb)
4925 {
4926         struct hci_ev_inquiry_result_rssi *ev = edata;
4927         struct inquiry_data data;
4928         int i;
4929
4930         bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4931
4932         if (!ev->num)
4933                 return;
4934
4935         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4936                 return;
4937
4938         hci_dev_lock(hdev);
4939
4940         if (skb->len == array_size(ev->num,
4941                                    sizeof(struct inquiry_info_rssi_pscan))) {
4942                 struct inquiry_info_rssi_pscan *info;
4943
4944                 for (i = 0; i < ev->num; i++) {
4945                         u32 flags;
4946
4947                         info = hci_ev_skb_pull(hdev, skb,
4948                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4949                                                sizeof(*info));
4950                         if (!info) {
4951                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4952                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4953                                 goto unlock;
4954                         }
4955
4956                         bacpy(&data.bdaddr, &info->bdaddr);
4957                         data.pscan_rep_mode     = info->pscan_rep_mode;
4958                         data.pscan_period_mode  = info->pscan_period_mode;
4959                         data.pscan_mode         = info->pscan_mode;
4960                         memcpy(data.dev_class, info->dev_class, 3);
4961                         data.clock_offset       = info->clock_offset;
4962                         data.rssi               = info->rssi;
4963                         data.ssp_mode           = 0x00;
4964
4965                         flags = hci_inquiry_cache_update(hdev, &data, false);
4966
4967                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4968                                           info->dev_class, info->rssi,
4969                                           flags, NULL, 0, NULL, 0, 0);
4970                 }
4971         } else if (skb->len == array_size(ev->num,
4972                                           sizeof(struct inquiry_info_rssi))) {
4973                 struct inquiry_info_rssi *info;
4974
4975                 for (i = 0; i < ev->num; i++) {
4976                         u32 flags;
4977
4978                         info = hci_ev_skb_pull(hdev, skb,
4979                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4980                                                sizeof(*info));
4981                         if (!info) {
4982                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4983                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4984                                 goto unlock;
4985                         }
4986
4987                         bacpy(&data.bdaddr, &info->bdaddr);
4988                         data.pscan_rep_mode     = info->pscan_rep_mode;
4989                         data.pscan_period_mode  = info->pscan_period_mode;
4990                         data.pscan_mode         = 0x00;
4991                         memcpy(data.dev_class, info->dev_class, 3);
4992                         data.clock_offset       = info->clock_offset;
4993                         data.rssi               = info->rssi;
4994                         data.ssp_mode           = 0x00;
4995
4996                         flags = hci_inquiry_cache_update(hdev, &data, false);
4997
4998                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4999                                           info->dev_class, info->rssi,
5000                                           flags, NULL, 0, NULL, 0, 0);
5001                 }
5002         } else {
5003                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5004                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5005         }
5006 unlock:
5007         hci_dev_unlock(hdev);
5008 }
5009
5010 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
5011                                         struct sk_buff *skb)
5012 {
5013         struct hci_ev_remote_ext_features *ev = data;
5014         struct hci_conn *conn;
5015
5016         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5017
5018         hci_dev_lock(hdev);
5019
5020         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5021         if (!conn)
5022                 goto unlock;
5023
5024         if (ev->page < HCI_MAX_PAGES)
5025                 memcpy(conn->features[ev->page], ev->features, 8);
5026
5027         if (!ev->status && ev->page == 0x01) {
5028                 struct inquiry_entry *ie;
5029
5030                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
5031                 if (ie)
5032                         ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5033
5034                 if (ev->features[0] & LMP_HOST_SSP) {
5035                         set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5036                 } else {
5037                         /* It is mandatory by the Bluetooth specification that
5038                          * Extended Inquiry Results are only used when Secure
5039                          * Simple Pairing is enabled, but some devices violate
5040                          * this.
5041                          *
5042                          * To make these devices work, the internal SSP
5043                          * enabled flag needs to be cleared if the remote host
5044                          * features do not indicate SSP support */
5045                         clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5046                 }
5047
5048                 if (ev->features[0] & LMP_HOST_SC)
5049                         set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
5050         }
5051
5052         if (conn->state != BT_CONFIG)
5053                 goto unlock;
5054
5055         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
5056                 struct hci_cp_remote_name_req cp;
5057                 memset(&cp, 0, sizeof(cp));
5058                 bacpy(&cp.bdaddr, &conn->dst);
5059                 cp.pscan_rep_mode = 0x02;
5060                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
5061         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5062                 mgmt_device_connected(hdev, conn, NULL, 0);
5063
5064         if (!hci_outgoing_auth_needed(hdev, conn)) {
5065                 conn->state = BT_CONNECTED;
5066                 hci_connect_cfm(conn, ev->status);
5067                 hci_conn_drop(conn);
5068         }
5069
5070 unlock:
5071         hci_dev_unlock(hdev);
5072 }
5073
5074 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
5075                                        struct sk_buff *skb)
5076 {
5077         struct hci_ev_sync_conn_complete *ev = data;
5078         struct hci_conn *conn;
5079         u8 status = ev->status;
5080
5081         switch (ev->link_type) {
5082         case SCO_LINK:
5083         case ESCO_LINK:
5084                 break;
5085         default:
5086                 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
5087                  * for HCI_Synchronous_Connection_Complete is limited to
5088                  * either SCO or eSCO
5089                  */
5090                 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
5091                 return;
5092         }
5093
5094         bt_dev_dbg(hdev, "status 0x%2.2x", status);
5095
5096         hci_dev_lock(hdev);
5097
5098         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
5099         if (!conn) {
5100                 if (ev->link_type == ESCO_LINK)
5101                         goto unlock;
5102
5103                 /* When the link type in the event indicates SCO connection
5104                  * and lookup of the connection object fails, then check
5105                  * if an eSCO connection object exists.
5106                  *
5107                  * The core limits the synchronous connections to either
5108                  * SCO or eSCO. The eSCO connection is preferred and tried
5109                  * to be setup first and until successfully established,
5110                  * the link type will be hinted as eSCO.
5111                  */
5112                 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
5113                 if (!conn)
5114                         goto unlock;
5115         }
5116
5117         /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
5118          * Processing it more than once per connection can corrupt kernel memory.
5119          *
5120          * As the connection handle is set here for the first time, it indicates
5121          * whether the connection is already set up.
5122          */
5123         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5124                 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5125                 goto unlock;
5126         }
5127
5128         switch (status) {
5129         case 0x00:
5130                 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
5131                 if (status) {
5132                         conn->state = BT_CLOSED;
5133                         break;
5134                 }
5135
5136                 conn->state  = BT_CONNECTED;
5137                 conn->type   = ev->link_type;
5138
5139                 hci_debugfs_create_conn(conn);
5140                 hci_conn_add_sysfs(conn);
5141                 break;
5142
5143         case 0x10:      /* Connection Accept Timeout */
5144         case 0x0d:      /* Connection Rejected due to Limited Resources */
5145         case 0x11:      /* Unsupported Feature or Parameter Value */
5146         case 0x1c:      /* SCO interval rejected */
5147         case 0x1a:      /* Unsupported Remote Feature */
5148         case 0x1e:      /* Invalid LMP Parameters */
5149         case 0x1f:      /* Unspecified error */
5150         case 0x20:      /* Unsupported LMP Parameter value */
5151                 if (conn->out) {
5152                         conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5153                                         (hdev->esco_type & EDR_ESCO_MASK);
5154                         if (hci_setup_sync(conn, conn->parent->handle))
5155                                 goto unlock;
5156                 }
5157                 fallthrough;
5158
5159         default:
5160                 conn->state = BT_CLOSED;
5161                 break;
5162         }
5163
5164         bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5165         /* Notify only in case of SCO over HCI transport data path which
5166          * is zero and non-zero value shall be non-HCI transport data path
5167          */
5168         if (conn->codec.data_path == 0 && hdev->notify) {
5169                 switch (ev->air_mode) {
5170                 case 0x02:
5171                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5172                         break;
5173                 case 0x03:
5174                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5175                         break;
5176                 }
5177         }
5178
5179         hci_connect_cfm(conn, status);
5180         if (status)
5181                 hci_conn_del(conn);
5182
5183 unlock:
5184         hci_dev_unlock(hdev);
5185 }
5186
5187 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5188 {
5189         size_t parsed = 0;
5190
5191         while (parsed < eir_len) {
5192                 u8 field_len = eir[0];
5193
5194                 if (field_len == 0)
5195                         return parsed;
5196
5197                 parsed += field_len + 1;
5198                 eir += field_len + 1;
5199         }
5200
5201         return eir_len;
5202 }
5203
5204 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5205                                             struct sk_buff *skb)
5206 {
5207         struct hci_ev_ext_inquiry_result *ev = edata;
5208         struct inquiry_data data;
5209         size_t eir_len;
5210         int i;
5211
5212         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5213                              flex_array_size(ev, info, ev->num)))
5214                 return;
5215
5216         bt_dev_dbg(hdev, "num %d", ev->num);
5217
5218         if (!ev->num)
5219                 return;
5220
5221         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5222                 return;
5223
5224         hci_dev_lock(hdev);
5225
5226         for (i = 0; i < ev->num; i++) {
5227                 struct extended_inquiry_info *info = &ev->info[i];
5228                 u32 flags;
5229                 bool name_known;
5230
5231                 bacpy(&data.bdaddr, &info->bdaddr);
5232                 data.pscan_rep_mode     = info->pscan_rep_mode;
5233                 data.pscan_period_mode  = info->pscan_period_mode;
5234                 data.pscan_mode         = 0x00;
5235                 memcpy(data.dev_class, info->dev_class, 3);
5236                 data.clock_offset       = info->clock_offset;
5237                 data.rssi               = info->rssi;
5238                 data.ssp_mode           = 0x01;
5239
5240                 if (hci_dev_test_flag(hdev, HCI_MGMT))
5241                         name_known = eir_get_data(info->data,
5242                                                   sizeof(info->data),
5243                                                   EIR_NAME_COMPLETE, NULL);
5244                 else
5245                         name_known = true;
5246
5247                 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5248
5249                 eir_len = eir_get_length(info->data, sizeof(info->data));
5250
5251                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5252                                   info->dev_class, info->rssi,
5253                                   flags, info->data, eir_len, NULL, 0, 0);
5254         }
5255
5256         hci_dev_unlock(hdev);
5257 }
5258
5259 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5260                                          struct sk_buff *skb)
5261 {
5262         struct hci_ev_key_refresh_complete *ev = data;
5263         struct hci_conn *conn;
5264
5265         bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5266                    __le16_to_cpu(ev->handle));
5267
5268         hci_dev_lock(hdev);
5269
5270         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5271         if (!conn)
5272                 goto unlock;
5273
5274         /* For BR/EDR the necessary steps are taken through the
5275          * auth_complete event.
5276          */
5277         if (conn->type != LE_LINK)
5278                 goto unlock;
5279
5280         if (!ev->status)
5281                 conn->sec_level = conn->pending_sec_level;
5282
5283         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5284
5285         if (ev->status && conn->state == BT_CONNECTED) {
5286                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5287                 hci_conn_drop(conn);
5288                 goto unlock;
5289         }
5290
5291         if (conn->state == BT_CONFIG) {
5292                 if (!ev->status)
5293                         conn->state = BT_CONNECTED;
5294
5295                 hci_connect_cfm(conn, ev->status);
5296                 hci_conn_drop(conn);
5297         } else {
5298                 hci_auth_cfm(conn, ev->status);
5299
5300                 hci_conn_hold(conn);
5301                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5302                 hci_conn_drop(conn);
5303         }
5304
5305 unlock:
5306         hci_dev_unlock(hdev);
5307 }
5308
5309 static u8 hci_get_auth_req(struct hci_conn *conn)
5310 {
5311         /* If remote requests no-bonding follow that lead */
5312         if (conn->remote_auth == HCI_AT_NO_BONDING ||
5313             conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5314                 return conn->remote_auth | (conn->auth_type & 0x01);
5315
5316         /* If both remote and local have enough IO capabilities, require
5317          * MITM protection
5318          */
5319         if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5320             conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5321                 return conn->remote_auth | 0x01;
5322
5323         /* No MITM protection possible so ignore remote requirement */
5324         return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5325 }
5326
5327 static u8 bredr_oob_data_present(struct hci_conn *conn)
5328 {
5329         struct hci_dev *hdev = conn->hdev;
5330         struct oob_data *data;
5331
5332         data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5333         if (!data)
5334                 return 0x00;
5335
5336         if (bredr_sc_enabled(hdev)) {
5337                 /* When Secure Connections is enabled, then just
5338                  * return the present value stored with the OOB
5339                  * data. The stored value contains the right present
5340                  * information. However it can only be trusted when
5341                  * not in Secure Connection Only mode.
5342                  */
5343                 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5344                         return data->present;
5345
5346                 /* When Secure Connections Only mode is enabled, then
5347                  * the P-256 values are required. If they are not
5348                  * available, then do not declare that OOB data is
5349                  * present.
5350                  */
5351                 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) ||
5352                     !crypto_memneq(data->hash256, ZERO_KEY, 16))
5353                         return 0x00;
5354
5355                 return 0x02;
5356         }
5357
5358         /* When Secure Connections is not enabled or actually
5359          * not supported by the hardware, then check that if
5360          * P-192 data values are present.
5361          */
5362         if (!crypto_memneq(data->rand192, ZERO_KEY, 16) ||
5363             !crypto_memneq(data->hash192, ZERO_KEY, 16))
5364                 return 0x00;
5365
5366         return 0x01;
5367 }
5368
5369 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5370                                     struct sk_buff *skb)
5371 {
5372         struct hci_ev_io_capa_request *ev = data;
5373         struct hci_conn *conn;
5374
5375         bt_dev_dbg(hdev, "");
5376
5377         hci_dev_lock(hdev);
5378
5379         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5380         if (!conn || !hci_conn_ssp_enabled(conn))
5381                 goto unlock;
5382
5383         hci_conn_hold(conn);
5384
5385         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5386                 goto unlock;
5387
5388         /* Allow pairing if we're pairable, the initiators of the
5389          * pairing or if the remote is not requesting bonding.
5390          */
5391         if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5392             test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5393             (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5394                 struct hci_cp_io_capability_reply cp;
5395
5396                 bacpy(&cp.bdaddr, &ev->bdaddr);
5397                 /* Change the IO capability from KeyboardDisplay
5398                  * to DisplayYesNo as it is not supported by BT spec. */
5399                 cp.capability = (conn->io_capability == 0x04) ?
5400                                 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5401
5402                 /* If we are initiators, there is no remote information yet */
5403                 if (conn->remote_auth == 0xff) {
5404                         /* Request MITM protection if our IO caps allow it
5405                          * except for the no-bonding case.
5406                          */
5407                         if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5408                             conn->auth_type != HCI_AT_NO_BONDING)
5409                                 conn->auth_type |= 0x01;
5410                 } else {
5411                         conn->auth_type = hci_get_auth_req(conn);
5412                 }
5413
5414                 /* If we're not bondable, force one of the non-bondable
5415                  * authentication requirement values.
5416                  */
5417                 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5418                         conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5419
5420                 cp.authentication = conn->auth_type;
5421                 cp.oob_data = bredr_oob_data_present(conn);
5422
5423                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5424                              sizeof(cp), &cp);
5425         } else {
5426                 struct hci_cp_io_capability_neg_reply cp;
5427
5428                 bacpy(&cp.bdaddr, &ev->bdaddr);
5429                 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5430
5431                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5432                              sizeof(cp), &cp);
5433         }
5434
5435 unlock:
5436         hci_dev_unlock(hdev);
5437 }
5438
5439 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5440                                   struct sk_buff *skb)
5441 {
5442         struct hci_ev_io_capa_reply *ev = data;
5443         struct hci_conn *conn;
5444
5445         bt_dev_dbg(hdev, "");
5446
5447         hci_dev_lock(hdev);
5448
5449         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5450         if (!conn)
5451                 goto unlock;
5452
5453         conn->remote_cap = ev->capability;
5454         conn->remote_auth = ev->authentication;
5455
5456 unlock:
5457         hci_dev_unlock(hdev);
5458 }
5459
5460 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5461                                          struct sk_buff *skb)
5462 {
5463         struct hci_ev_user_confirm_req *ev = data;
5464         int loc_mitm, rem_mitm, confirm_hint = 0;
5465         struct hci_conn *conn;
5466
5467         bt_dev_dbg(hdev, "");
5468
5469         hci_dev_lock(hdev);
5470
5471         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5472                 goto unlock;
5473
5474         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5475         if (!conn)
5476                 goto unlock;
5477
5478         loc_mitm = (conn->auth_type & 0x01);
5479         rem_mitm = (conn->remote_auth & 0x01);
5480
5481         /* If we require MITM but the remote device can't provide that
5482          * (it has NoInputNoOutput) then reject the confirmation
5483          * request. We check the security level here since it doesn't
5484          * necessarily match conn->auth_type.
5485          */
5486         if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5487             conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5488                 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5489                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5490                              sizeof(ev->bdaddr), &ev->bdaddr);
5491                 goto unlock;
5492         }
5493
5494         /* If no side requires MITM protection; auto-accept */
5495         if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5496             (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5497
5498                 /* If we're not the initiators request authorization to
5499                  * proceed from user space (mgmt_user_confirm with
5500                  * confirm_hint set to 1). The exception is if neither
5501                  * side had MITM or if the local IO capability is
5502                  * NoInputNoOutput, in which case we do auto-accept
5503                  */
5504                 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5505                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5506                     (loc_mitm || rem_mitm)) {
5507                         bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5508                         confirm_hint = 1;
5509                         goto confirm;
5510                 }
5511
5512                 /* If there already exists link key in local host, leave the
5513                  * decision to user space since the remote device could be
5514                  * legitimate or malicious.
5515                  */
5516                 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5517                         bt_dev_dbg(hdev, "Local host already has link key");
5518                         confirm_hint = 1;
5519                         goto confirm;
5520                 }
5521
5522                 BT_DBG("Auto-accept of user confirmation with %ums delay",
5523                        hdev->auto_accept_delay);
5524
5525                 if (hdev->auto_accept_delay > 0) {
5526                         int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5527                         queue_delayed_work(conn->hdev->workqueue,
5528                                            &conn->auto_accept_work, delay);
5529                         goto unlock;
5530                 }
5531
5532                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5533                              sizeof(ev->bdaddr), &ev->bdaddr);
5534                 goto unlock;
5535         }
5536
5537 confirm:
5538         mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5539                                   le32_to_cpu(ev->passkey), confirm_hint);
5540
5541 unlock:
5542         hci_dev_unlock(hdev);
5543 }
5544
5545 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5546                                          struct sk_buff *skb)
5547 {
5548         struct hci_ev_user_passkey_req *ev = data;
5549
5550         bt_dev_dbg(hdev, "");
5551
5552         if (hci_dev_test_flag(hdev, HCI_MGMT))
5553                 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5554 }
5555
5556 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5557                                         struct sk_buff *skb)
5558 {
5559         struct hci_ev_user_passkey_notify *ev = data;
5560         struct hci_conn *conn;
5561
5562         bt_dev_dbg(hdev, "");
5563
5564         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5565         if (!conn)
5566                 return;
5567
5568         conn->passkey_notify = __le32_to_cpu(ev->passkey);
5569         conn->passkey_entered = 0;
5570
5571         if (hci_dev_test_flag(hdev, HCI_MGMT))
5572                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5573                                          conn->dst_type, conn->passkey_notify,
5574                                          conn->passkey_entered);
5575 }
5576
5577 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5578                                     struct sk_buff *skb)
5579 {
5580         struct hci_ev_keypress_notify *ev = data;
5581         struct hci_conn *conn;
5582
5583         bt_dev_dbg(hdev, "");
5584
5585         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5586         if (!conn)
5587                 return;
5588
5589         switch (ev->type) {
5590         case HCI_KEYPRESS_STARTED:
5591                 conn->passkey_entered = 0;
5592                 return;
5593
5594         case HCI_KEYPRESS_ENTERED:
5595                 conn->passkey_entered++;
5596                 break;
5597
5598         case HCI_KEYPRESS_ERASED:
5599                 conn->passkey_entered--;
5600                 break;
5601
5602         case HCI_KEYPRESS_CLEARED:
5603                 conn->passkey_entered = 0;
5604                 break;
5605
5606         case HCI_KEYPRESS_COMPLETED:
5607                 return;
5608         }
5609
5610         if (hci_dev_test_flag(hdev, HCI_MGMT))
5611                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5612                                          conn->dst_type, conn->passkey_notify,
5613                                          conn->passkey_entered);
5614 }
5615
5616 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5617                                          struct sk_buff *skb)
5618 {
5619         struct hci_ev_simple_pair_complete *ev = data;
5620         struct hci_conn *conn;
5621
5622         bt_dev_dbg(hdev, "");
5623
5624         hci_dev_lock(hdev);
5625
5626         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5627         if (!conn || !hci_conn_ssp_enabled(conn))
5628                 goto unlock;
5629
5630         /* Reset the authentication requirement to unknown */
5631         conn->remote_auth = 0xff;
5632
5633         /* To avoid duplicate auth_failed events to user space we check
5634          * the HCI_CONN_AUTH_PEND flag which will be set if we
5635          * initiated the authentication. A traditional auth_complete
5636          * event gets always produced as initiator and is also mapped to
5637          * the mgmt_auth_failed event */
5638         if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5639                 mgmt_auth_failed(conn, ev->status);
5640
5641         hci_conn_drop(conn);
5642
5643 unlock:
5644         hci_dev_unlock(hdev);
5645 }
5646
5647 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5648                                          struct sk_buff *skb)
5649 {
5650         struct hci_ev_remote_host_features *ev = data;
5651         struct inquiry_entry *ie;
5652         struct hci_conn *conn;
5653
5654         bt_dev_dbg(hdev, "");
5655
5656         hci_dev_lock(hdev);
5657
5658         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5659         if (conn)
5660                 memcpy(conn->features[1], ev->features, 8);
5661
5662         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5663         if (ie)
5664                 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5665
5666         hci_dev_unlock(hdev);
5667 }
5668
5669 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5670                                             struct sk_buff *skb)
5671 {
5672         struct hci_ev_remote_oob_data_request *ev = edata;
5673         struct oob_data *data;
5674
5675         bt_dev_dbg(hdev, "");
5676
5677         hci_dev_lock(hdev);
5678
5679         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5680                 goto unlock;
5681
5682         data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5683         if (!data) {
5684                 struct hci_cp_remote_oob_data_neg_reply cp;
5685
5686                 bacpy(&cp.bdaddr, &ev->bdaddr);
5687                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5688                              sizeof(cp), &cp);
5689                 goto unlock;
5690         }
5691
5692         if (bredr_sc_enabled(hdev)) {
5693                 struct hci_cp_remote_oob_ext_data_reply cp;
5694
5695                 bacpy(&cp.bdaddr, &ev->bdaddr);
5696                 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5697                         memset(cp.hash192, 0, sizeof(cp.hash192));
5698                         memset(cp.rand192, 0, sizeof(cp.rand192));
5699                 } else {
5700                         memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5701                         memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5702                 }
5703                 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5704                 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5705
5706                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5707                              sizeof(cp), &cp);
5708         } else {
5709                 struct hci_cp_remote_oob_data_reply cp;
5710
5711                 bacpy(&cp.bdaddr, &ev->bdaddr);
5712                 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5713                 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5714
5715                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5716                              sizeof(cp), &cp);
5717         }
5718
5719 unlock:
5720         hci_dev_unlock(hdev);
5721 }
5722
5723 #if IS_ENABLED(CONFIG_BT_HS)
5724 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5725                                   struct sk_buff *skb)
5726 {
5727         struct hci_ev_channel_selected *ev = data;
5728         struct hci_conn *hcon;
5729
5730         bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5731
5732         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5733         if (!hcon)
5734                 return;
5735
5736         amp_read_loc_assoc_final_data(hdev, hcon);
5737 }
5738
5739 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5740                                       struct sk_buff *skb)
5741 {
5742         struct hci_ev_phy_link_complete *ev = data;
5743         struct hci_conn *hcon, *bredr_hcon;
5744
5745         bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5746                    ev->status);
5747
5748         hci_dev_lock(hdev);
5749
5750         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5751         if (!hcon)
5752                 goto unlock;
5753
5754         if (!hcon->amp_mgr)
5755                 goto unlock;
5756
5757         if (ev->status) {
5758                 hci_conn_del(hcon);
5759                 goto unlock;
5760         }
5761
5762         bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5763
5764         hcon->state = BT_CONNECTED;
5765         bacpy(&hcon->dst, &bredr_hcon->dst);
5766
5767         hci_conn_hold(hcon);
5768         hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5769         hci_conn_drop(hcon);
5770
5771         hci_debugfs_create_conn(hcon);
5772         hci_conn_add_sysfs(hcon);
5773
5774         amp_physical_cfm(bredr_hcon, hcon);
5775
5776 unlock:
5777         hci_dev_unlock(hdev);
5778 }
5779
5780 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5781                                      struct sk_buff *skb)
5782 {
5783         struct hci_ev_logical_link_complete *ev = data;
5784         struct hci_conn *hcon;
5785         struct hci_chan *hchan;
5786         struct amp_mgr *mgr;
5787
5788         bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5789                    le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5790
5791         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5792         if (!hcon)
5793                 return;
5794
5795         /* Create AMP hchan */
5796         hchan = hci_chan_create(hcon);
5797         if (!hchan)
5798                 return;
5799
5800         hchan->handle = le16_to_cpu(ev->handle);
5801         hchan->amp = true;
5802
5803         BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5804
5805         mgr = hcon->amp_mgr;
5806         if (mgr && mgr->bredr_chan) {
5807                 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5808
5809                 l2cap_chan_lock(bredr_chan);
5810
5811                 bredr_chan->conn->mtu = hdev->block_mtu;
5812                 l2cap_logical_cfm(bredr_chan, hchan, 0);
5813                 hci_conn_hold(hcon);
5814
5815                 l2cap_chan_unlock(bredr_chan);
5816         }
5817 }
5818
5819 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5820                                              struct sk_buff *skb)
5821 {
5822         struct hci_ev_disconn_logical_link_complete *ev = data;
5823         struct hci_chan *hchan;
5824
5825         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5826                    le16_to_cpu(ev->handle), ev->status);
5827
5828         if (ev->status)
5829                 return;
5830
5831         hci_dev_lock(hdev);
5832
5833         hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5834         if (!hchan || !hchan->amp)
5835                 goto unlock;
5836
5837         amp_destroy_logical_link(hchan, ev->reason);
5838
5839 unlock:
5840         hci_dev_unlock(hdev);
5841 }
5842
5843 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5844                                              struct sk_buff *skb)
5845 {
5846         struct hci_ev_disconn_phy_link_complete *ev = data;
5847         struct hci_conn *hcon;
5848
5849         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5850
5851         if (ev->status)
5852                 return;
5853
5854         hci_dev_lock(hdev);
5855
5856         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5857         if (hcon && hcon->type == AMP_LINK) {
5858                 hcon->state = BT_CLOSED;
5859                 hci_disconn_cfm(hcon, ev->reason);
5860                 hci_conn_del(hcon);
5861         }
5862
5863         hci_dev_unlock(hdev);
5864 }
5865 #endif
5866
5867 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5868                                 u8 bdaddr_type, bdaddr_t *local_rpa)
5869 {
5870         if (conn->out) {
5871                 conn->dst_type = bdaddr_type;
5872                 conn->resp_addr_type = bdaddr_type;
5873                 bacpy(&conn->resp_addr, bdaddr);
5874
5875                 /* Check if the controller has set a Local RPA then it must be
5876                  * used instead or hdev->rpa.
5877                  */
5878                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5879                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5880                         bacpy(&conn->init_addr, local_rpa);
5881                 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5882                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5883                         bacpy(&conn->init_addr, &conn->hdev->rpa);
5884                 } else {
5885                         hci_copy_identity_address(conn->hdev, &conn->init_addr,
5886                                                   &conn->init_addr_type);
5887                 }
5888         } else {
5889                 conn->resp_addr_type = conn->hdev->adv_addr_type;
5890                 /* Check if the controller has set a Local RPA then it must be
5891                  * used instead or hdev->rpa.
5892                  */
5893                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5894                         conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5895                         bacpy(&conn->resp_addr, local_rpa);
5896                 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5897                         /* In case of ext adv, resp_addr will be updated in
5898                          * Adv Terminated event.
5899                          */
5900                         if (!ext_adv_capable(conn->hdev))
5901                                 bacpy(&conn->resp_addr,
5902                                       &conn->hdev->random_addr);
5903                 } else {
5904                         bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5905                 }
5906
5907                 conn->init_addr_type = bdaddr_type;
5908                 bacpy(&conn->init_addr, bdaddr);
5909
5910                 /* For incoming connections, set the default minimum
5911                  * and maximum connection interval. They will be used
5912                  * to check if the parameters are in range and if not
5913                  * trigger the connection update procedure.
5914                  */
5915                 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5916                 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5917         }
5918 }
5919
5920 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5921                                  bdaddr_t *bdaddr, u8 bdaddr_type,
5922                                  bdaddr_t *local_rpa, u8 role, u16 handle,
5923                                  u16 interval, u16 latency,
5924                                  u16 supervision_timeout)
5925 {
5926         struct hci_conn_params *params;
5927         struct hci_conn *conn;
5928         struct smp_irk *irk;
5929         u8 addr_type;
5930
5931         hci_dev_lock(hdev);
5932
5933         /* All controllers implicitly stop advertising in the event of a
5934          * connection, so ensure that the state bit is cleared.
5935          */
5936         hci_dev_clear_flag(hdev, HCI_LE_ADV);
5937
5938         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
5939         if (!conn) {
5940                 /* In case of error status and there is no connection pending
5941                  * just unlock as there is nothing to cleanup.
5942                  */
5943                 if (status)
5944                         goto unlock;
5945
5946                 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role);
5947                 if (!conn) {
5948                         bt_dev_err(hdev, "no memory for new connection");
5949                         goto unlock;
5950                 }
5951
5952                 conn->dst_type = bdaddr_type;
5953
5954                 /* If we didn't have a hci_conn object previously
5955                  * but we're in central role this must be something
5956                  * initiated using an accept list. Since accept list based
5957                  * connections are not "first class citizens" we don't
5958                  * have full tracking of them. Therefore, we go ahead
5959                  * with a "best effort" approach of determining the
5960                  * initiator address based on the HCI_PRIVACY flag.
5961                  */
5962                 if (conn->out) {
5963                         conn->resp_addr_type = bdaddr_type;
5964                         bacpy(&conn->resp_addr, bdaddr);
5965                         if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5966                                 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5967                                 bacpy(&conn->init_addr, &hdev->rpa);
5968                         } else {
5969                                 hci_copy_identity_address(hdev,
5970                                                           &conn->init_addr,
5971                                                           &conn->init_addr_type);
5972                         }
5973                 }
5974         } else {
5975                 cancel_delayed_work(&conn->le_conn_timeout);
5976         }
5977
5978         /* The HCI_LE_Connection_Complete event is only sent once per connection.
5979          * Processing it more than once per connection can corrupt kernel memory.
5980          *
5981          * As the connection handle is set here for the first time, it indicates
5982          * whether the connection is already set up.
5983          */
5984         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5985                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
5986                 goto unlock;
5987         }
5988
5989         le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
5990
5991         /* Lookup the identity address from the stored connection
5992          * address and address type.
5993          *
5994          * When establishing connections to an identity address, the
5995          * connection procedure will store the resolvable random
5996          * address first. Now if it can be converted back into the
5997          * identity address, start using the identity address from
5998          * now on.
5999          */
6000         irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
6001         if (irk) {
6002                 bacpy(&conn->dst, &irk->bdaddr);
6003                 conn->dst_type = irk->addr_type;
6004         }
6005
6006         conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
6007
6008         /* All connection failure handling is taken care of by the
6009          * hci_conn_failed function which is triggered by the HCI
6010          * request completion callbacks used for connecting.
6011          */
6012         if (status || hci_conn_set_handle(conn, handle))
6013                 goto unlock;
6014
6015         /* Drop the connection if it has been aborted */
6016         if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
6017                 hci_conn_drop(conn);
6018                 goto unlock;
6019         }
6020
6021         if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
6022                 addr_type = BDADDR_LE_PUBLIC;
6023         else
6024                 addr_type = BDADDR_LE_RANDOM;
6025
6026         /* Drop the connection if the device is blocked */
6027         if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
6028                 hci_conn_drop(conn);
6029                 goto unlock;
6030         }
6031
6032         if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
6033                 mgmt_device_connected(hdev, conn, NULL, 0);
6034
6035         conn->sec_level = BT_SECURITY_LOW;
6036         conn->state = BT_CONFIG;
6037
6038         /* Store current advertising instance as connection advertising instance
6039          * when sotfware rotation is in use so it can be re-enabled when
6040          * disconnected.
6041          */
6042         if (!ext_adv_capable(hdev))
6043                 conn->adv_instance = hdev->cur_adv_instance;
6044
6045         conn->le_conn_interval = interval;
6046         conn->le_conn_latency = latency;
6047         conn->le_supv_timeout = supervision_timeout;
6048
6049         hci_debugfs_create_conn(conn);
6050         hci_conn_add_sysfs(conn);
6051
6052         /* The remote features procedure is defined for central
6053          * role only. So only in case of an initiated connection
6054          * request the remote features.
6055          *
6056          * If the local controller supports peripheral-initiated features
6057          * exchange, then requesting the remote features in peripheral
6058          * role is possible. Otherwise just transition into the
6059          * connected state without requesting the remote features.
6060          */
6061         if (conn->out ||
6062             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
6063                 struct hci_cp_le_read_remote_features cp;
6064
6065                 cp.handle = __cpu_to_le16(conn->handle);
6066
6067                 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
6068                              sizeof(cp), &cp);
6069
6070                 hci_conn_hold(conn);
6071         } else {
6072                 conn->state = BT_CONNECTED;
6073                 hci_connect_cfm(conn, status);
6074         }
6075
6076         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
6077                                            conn->dst_type);
6078         if (params) {
6079                 hci_pend_le_list_del_init(params);
6080                 if (params->conn) {
6081                         hci_conn_drop(params->conn);
6082                         hci_conn_put(params->conn);
6083                         params->conn = NULL;
6084                 }
6085         }
6086
6087 unlock:
6088         hci_update_passive_scan(hdev);
6089         hci_dev_unlock(hdev);
6090 }
6091
6092 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
6093                                      struct sk_buff *skb)
6094 {
6095         struct hci_ev_le_conn_complete *ev = data;
6096
6097         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6098
6099         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6100                              NULL, ev->role, le16_to_cpu(ev->handle),
6101                              le16_to_cpu(ev->interval),
6102                              le16_to_cpu(ev->latency),
6103                              le16_to_cpu(ev->supervision_timeout));
6104 }
6105
6106 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
6107                                          struct sk_buff *skb)
6108 {
6109         struct hci_ev_le_enh_conn_complete *ev = data;
6110
6111         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6112
6113         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6114                              &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
6115                              le16_to_cpu(ev->interval),
6116                              le16_to_cpu(ev->latency),
6117                              le16_to_cpu(ev->supervision_timeout));
6118 }
6119
6120 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6121                                     struct sk_buff *skb)
6122 {
6123         struct hci_evt_le_ext_adv_set_term *ev = data;
6124         struct hci_conn *conn;
6125         struct adv_info *adv, *n;
6126
6127         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6128
6129         /* The Bluetooth Core 5.3 specification clearly states that this event
6130          * shall not be sent when the Host disables the advertising set. So in
6131          * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6132          *
6133          * When the Host disables an advertising set, all cleanup is done via
6134          * its command callback and not needed to be duplicated here.
6135          */
6136         if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6137                 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6138                 return;
6139         }
6140
6141         hci_dev_lock(hdev);
6142
6143         adv = hci_find_adv_instance(hdev, ev->handle);
6144
6145         if (ev->status) {
6146                 if (!adv)
6147                         goto unlock;
6148
6149                 /* Remove advertising as it has been terminated */
6150                 hci_remove_adv_instance(hdev, ev->handle);
6151                 mgmt_advertising_removed(NULL, hdev, ev->handle);
6152
6153                 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6154                         if (adv->enabled)
6155                                 goto unlock;
6156                 }
6157
6158                 /* We are no longer advertising, clear HCI_LE_ADV */
6159                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6160                 goto unlock;
6161         }
6162
6163         if (adv)
6164                 adv->enabled = false;
6165
6166         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6167         if (conn) {
6168                 /* Store handle in the connection so the correct advertising
6169                  * instance can be re-enabled when disconnected.
6170                  */
6171                 conn->adv_instance = ev->handle;
6172
6173                 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6174                     bacmp(&conn->resp_addr, BDADDR_ANY))
6175                         goto unlock;
6176
6177                 if (!ev->handle) {
6178                         bacpy(&conn->resp_addr, &hdev->random_addr);
6179                         goto unlock;
6180                 }
6181
6182                 if (adv)
6183                         bacpy(&conn->resp_addr, &adv->random_addr);
6184         }
6185
6186 unlock:
6187         hci_dev_unlock(hdev);
6188 }
6189
6190 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6191                                             struct sk_buff *skb)
6192 {
6193         struct hci_ev_le_conn_update_complete *ev = data;
6194         struct hci_conn *conn;
6195
6196         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6197
6198         if (ev->status)
6199                 return;
6200
6201         hci_dev_lock(hdev);
6202
6203         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6204         if (conn) {
6205                 conn->le_conn_interval = le16_to_cpu(ev->interval);
6206                 conn->le_conn_latency = le16_to_cpu(ev->latency);
6207                 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6208         }
6209
6210         hci_dev_unlock(hdev);
6211 }
6212
6213 /* This function requires the caller holds hdev->lock */
6214 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6215                                               bdaddr_t *addr,
6216                                               u8 addr_type, bool addr_resolved,
6217                                               u8 adv_type)
6218 {
6219         struct hci_conn *conn;
6220         struct hci_conn_params *params;
6221
6222         /* If the event is not connectable don't proceed further */
6223         if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6224                 return NULL;
6225
6226         /* Ignore if the device is blocked or hdev is suspended */
6227         if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6228             hdev->suspended)
6229                 return NULL;
6230
6231         /* Most controller will fail if we try to create new connections
6232          * while we have an existing one in peripheral role.
6233          */
6234         if (hdev->conn_hash.le_num_peripheral > 0 &&
6235             (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6236              !(hdev->le_states[3] & 0x10)))
6237                 return NULL;
6238
6239         /* If we're not connectable only connect devices that we have in
6240          * our pend_le_conns list.
6241          */
6242         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6243                                            addr_type);
6244         if (!params)
6245                 return NULL;
6246
6247         if (!params->explicit_connect) {
6248                 switch (params->auto_connect) {
6249                 case HCI_AUTO_CONN_DIRECT:
6250                         /* Only devices advertising with ADV_DIRECT_IND are
6251                          * triggering a connection attempt. This is allowing
6252                          * incoming connections from peripheral devices.
6253                          */
6254                         if (adv_type != LE_ADV_DIRECT_IND)
6255                                 return NULL;
6256                         break;
6257                 case HCI_AUTO_CONN_ALWAYS:
6258                         /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6259                          * are triggering a connection attempt. This means
6260                          * that incoming connections from peripheral device are
6261                          * accepted and also outgoing connections to peripheral
6262                          * devices are established when found.
6263                          */
6264                         break;
6265                 default:
6266                         return NULL;
6267                 }
6268         }
6269
6270         conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6271                               BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6272                               HCI_ROLE_MASTER);
6273         if (!IS_ERR(conn)) {
6274                 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6275                  * by higher layer that tried to connect, if no then
6276                  * store the pointer since we don't really have any
6277                  * other owner of the object besides the params that
6278                  * triggered it. This way we can abort the connection if
6279                  * the parameters get removed and keep the reference
6280                  * count consistent once the connection is established.
6281                  */
6282
6283                 if (!params->explicit_connect)
6284                         params->conn = hci_conn_get(conn);
6285
6286                 return conn;
6287         }
6288
6289         switch (PTR_ERR(conn)) {
6290         case -EBUSY:
6291                 /* If hci_connect() returns -EBUSY it means there is already
6292                  * an LE connection attempt going on. Since controllers don't
6293                  * support more than one connection attempt at the time, we
6294                  * don't consider this an error case.
6295                  */
6296                 break;
6297         default:
6298                 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6299                 return NULL;
6300         }
6301
6302         return NULL;
6303 }
6304
6305 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6306                                u8 bdaddr_type, bdaddr_t *direct_addr,
6307                                u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6308                                bool ext_adv, bool ctl_time, u64 instant)
6309 {
6310         struct discovery_state *d = &hdev->discovery;
6311         struct smp_irk *irk;
6312         struct hci_conn *conn;
6313         bool match, bdaddr_resolved;
6314         u32 flags;
6315         u8 *ptr;
6316
6317         switch (type) {
6318         case LE_ADV_IND:
6319         case LE_ADV_DIRECT_IND:
6320         case LE_ADV_SCAN_IND:
6321         case LE_ADV_NONCONN_IND:
6322         case LE_ADV_SCAN_RSP:
6323                 break;
6324         default:
6325                 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6326                                        "type: 0x%02x", type);
6327                 return;
6328         }
6329
6330         if (len > max_adv_len(hdev)) {
6331                 bt_dev_err_ratelimited(hdev,
6332                                        "adv larger than maximum supported");
6333                 return;
6334         }
6335
6336         /* Find the end of the data in case the report contains padded zero
6337          * bytes at the end causing an invalid length value.
6338          *
6339          * When data is NULL, len is 0 so there is no need for extra ptr
6340          * check as 'ptr < data + 0' is already false in such case.
6341          */
6342         for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6343                 if (ptr + 1 + *ptr > data + len)
6344                         break;
6345         }
6346
6347         /* Adjust for actual length. This handles the case when remote
6348          * device is advertising with incorrect data length.
6349          */
6350         len = ptr - data;
6351
6352         /* If the direct address is present, then this report is from
6353          * a LE Direct Advertising Report event. In that case it is
6354          * important to see if the address is matching the local
6355          * controller address.
6356          */
6357         if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6358                 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6359                                                   &bdaddr_resolved);
6360
6361                 /* Only resolvable random addresses are valid for these
6362                  * kind of reports and others can be ignored.
6363                  */
6364                 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6365                         return;
6366
6367                 /* If the controller is not using resolvable random
6368                  * addresses, then this report can be ignored.
6369                  */
6370                 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6371                         return;
6372
6373                 /* If the local IRK of the controller does not match
6374                  * with the resolvable random address provided, then
6375                  * this report can be ignored.
6376                  */
6377                 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6378                         return;
6379         }
6380
6381         /* Check if we need to convert to identity address */
6382         irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6383         if (irk) {
6384                 bdaddr = &irk->bdaddr;
6385                 bdaddr_type = irk->addr_type;
6386         }
6387
6388         bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6389
6390         /* Check if we have been requested to connect to this device.
6391          *
6392          * direct_addr is set only for directed advertising reports (it is NULL
6393          * for advertising reports) and is already verified to be RPA above.
6394          */
6395         conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6396                                      type);
6397         if (!ext_adv && conn && type == LE_ADV_IND &&
6398             len <= max_adv_len(hdev)) {
6399                 /* Store report for later inclusion by
6400                  * mgmt_device_connected
6401                  */
6402                 memcpy(conn->le_adv_data, data, len);
6403                 conn->le_adv_data_len = len;
6404         }
6405
6406         if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6407                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6408         else
6409                 flags = 0;
6410
6411         /* All scan results should be sent up for Mesh systems */
6412         if (hci_dev_test_flag(hdev, HCI_MESH)) {
6413                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6414                                   rssi, flags, data, len, NULL, 0, instant);
6415                 return;
6416         }
6417
6418         /* Passive scanning shouldn't trigger any device found events,
6419          * except for devices marked as CONN_REPORT for which we do send
6420          * device found events, or advertisement monitoring requested.
6421          */
6422         if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6423                 if (type == LE_ADV_DIRECT_IND)
6424                         return;
6425
6426                 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6427                                                bdaddr, bdaddr_type) &&
6428                     idr_is_empty(&hdev->adv_monitors_idr))
6429                         return;
6430
6431                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6432                                   rssi, flags, data, len, NULL, 0, 0);
6433                 return;
6434         }
6435
6436         /* When receiving a scan response, then there is no way to
6437          * know if the remote device is connectable or not. However
6438          * since scan responses are merged with a previously seen
6439          * advertising report, the flags field from that report
6440          * will be used.
6441          *
6442          * In the unlikely case that a controller just sends a scan
6443          * response event that doesn't match the pending report, then
6444          * it is marked as a standalone SCAN_RSP.
6445          */
6446         if (type == LE_ADV_SCAN_RSP)
6447                 flags = MGMT_DEV_FOUND_SCAN_RSP;
6448
6449         /* If there's nothing pending either store the data from this
6450          * event or send an immediate device found event if the data
6451          * should not be stored for later.
6452          */
6453         if (!ext_adv && !has_pending_adv_report(hdev)) {
6454                 /* If the report will trigger a SCAN_REQ store it for
6455                  * later merging.
6456                  */
6457                 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6458                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6459                                                  rssi, flags, data, len);
6460                         return;
6461                 }
6462
6463                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6464                                   rssi, flags, data, len, NULL, 0, 0);
6465                 return;
6466         }
6467
6468         /* Check if the pending report is for the same device as the new one */
6469         match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6470                  bdaddr_type == d->last_adv_addr_type);
6471
6472         /* If the pending data doesn't match this report or this isn't a
6473          * scan response (e.g. we got a duplicate ADV_IND) then force
6474          * sending of the pending data.
6475          */
6476         if (type != LE_ADV_SCAN_RSP || !match) {
6477                 /* Send out whatever is in the cache, but skip duplicates */
6478                 if (!match)
6479                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6480                                           d->last_adv_addr_type, NULL,
6481                                           d->last_adv_rssi, d->last_adv_flags,
6482                                           d->last_adv_data,
6483                                           d->last_adv_data_len, NULL, 0, 0);
6484
6485                 /* If the new report will trigger a SCAN_REQ store it for
6486                  * later merging.
6487                  */
6488                 if (!ext_adv && (type == LE_ADV_IND ||
6489                                  type == LE_ADV_SCAN_IND)) {
6490                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6491                                                  rssi, flags, data, len);
6492                         return;
6493                 }
6494
6495                 /* The advertising reports cannot be merged, so clear
6496                  * the pending report and send out a device found event.
6497                  */
6498                 clear_pending_adv_report(hdev);
6499                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6500                                   rssi, flags, data, len, NULL, 0, 0);
6501                 return;
6502         }
6503
6504         /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6505          * the new event is a SCAN_RSP. We can therefore proceed with
6506          * sending a merged device found event.
6507          */
6508         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6509                           d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6510                           d->last_adv_data, d->last_adv_data_len, data, len, 0);
6511         clear_pending_adv_report(hdev);
6512 }
6513
6514 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6515                                   struct sk_buff *skb)
6516 {
6517         struct hci_ev_le_advertising_report *ev = data;
6518         u64 instant = jiffies;
6519
6520         if (!ev->num)
6521                 return;
6522
6523         hci_dev_lock(hdev);
6524
6525         while (ev->num--) {
6526                 struct hci_ev_le_advertising_info *info;
6527                 s8 rssi;
6528
6529                 info = hci_le_ev_skb_pull(hdev, skb,
6530                                           HCI_EV_LE_ADVERTISING_REPORT,
6531                                           sizeof(*info));
6532                 if (!info)
6533                         break;
6534
6535                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6536                                         info->length + 1))
6537                         break;
6538
6539                 if (info->length <= max_adv_len(hdev)) {
6540                         rssi = info->data[info->length];
6541                         process_adv_report(hdev, info->type, &info->bdaddr,
6542                                            info->bdaddr_type, NULL, 0, rssi,
6543                                            info->data, info->length, false,
6544                                            false, instant);
6545                 } else {
6546                         bt_dev_err(hdev, "Dropping invalid advertising data");
6547                 }
6548         }
6549
6550         hci_dev_unlock(hdev);
6551 }
6552
6553 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6554 {
6555         if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6556                 switch (evt_type) {
6557                 case LE_LEGACY_ADV_IND:
6558                         return LE_ADV_IND;
6559                 case LE_LEGACY_ADV_DIRECT_IND:
6560                         return LE_ADV_DIRECT_IND;
6561                 case LE_LEGACY_ADV_SCAN_IND:
6562                         return LE_ADV_SCAN_IND;
6563                 case LE_LEGACY_NONCONN_IND:
6564                         return LE_ADV_NONCONN_IND;
6565                 case LE_LEGACY_SCAN_RSP_ADV:
6566                 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6567                         return LE_ADV_SCAN_RSP;
6568                 }
6569
6570                 goto invalid;
6571         }
6572
6573         if (evt_type & LE_EXT_ADV_CONN_IND) {
6574                 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6575                         return LE_ADV_DIRECT_IND;
6576
6577                 return LE_ADV_IND;
6578         }
6579
6580         if (evt_type & LE_EXT_ADV_SCAN_RSP)
6581                 return LE_ADV_SCAN_RSP;
6582
6583         if (evt_type & LE_EXT_ADV_SCAN_IND)
6584                 return LE_ADV_SCAN_IND;
6585
6586         if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6587             evt_type & LE_EXT_ADV_DIRECT_IND)
6588                 return LE_ADV_NONCONN_IND;
6589
6590 invalid:
6591         bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6592                                evt_type);
6593
6594         return LE_ADV_INVALID;
6595 }
6596
6597 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6598                                       struct sk_buff *skb)
6599 {
6600         struct hci_ev_le_ext_adv_report *ev = data;
6601         u64 instant = jiffies;
6602
6603         if (!ev->num)
6604                 return;
6605
6606         hci_dev_lock(hdev);
6607
6608         while (ev->num--) {
6609                 struct hci_ev_le_ext_adv_info *info;
6610                 u8 legacy_evt_type;
6611                 u16 evt_type;
6612
6613                 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6614                                           sizeof(*info));
6615                 if (!info)
6616                         break;
6617
6618                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6619                                         info->length))
6620                         break;
6621
6622                 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK;
6623                 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6624                 if (legacy_evt_type != LE_ADV_INVALID) {
6625                         process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6626                                            info->bdaddr_type, NULL, 0,
6627                                            info->rssi, info->data, info->length,
6628                                            !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6629                                            false, instant);
6630                 }
6631         }
6632
6633         hci_dev_unlock(hdev);
6634 }
6635
6636 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6637 {
6638         struct hci_cp_le_pa_term_sync cp;
6639
6640         memset(&cp, 0, sizeof(cp));
6641         cp.handle = handle;
6642
6643         return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6644 }
6645
6646 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6647                                             struct sk_buff *skb)
6648 {
6649         struct hci_ev_le_pa_sync_established *ev = data;
6650         int mask = hdev->link_mode;
6651         __u8 flags = 0;
6652         struct hci_conn *pa_sync;
6653
6654         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6655
6656         hci_dev_lock(hdev);
6657
6658         hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6659
6660         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6661         if (!(mask & HCI_LM_ACCEPT)) {
6662                 hci_le_pa_term_sync(hdev, ev->handle);
6663                 goto unlock;
6664         }
6665
6666         if (!(flags & HCI_PROTO_DEFER))
6667                 goto unlock;
6668
6669         if (ev->status) {
6670                 /* Add connection to indicate the failed PA sync event */
6671                 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
6672                                              HCI_ROLE_SLAVE);
6673
6674                 if (!pa_sync)
6675                         goto unlock;
6676
6677                 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags);
6678
6679                 /* Notify iso layer */
6680                 hci_connect_cfm(pa_sync, ev->status);
6681         }
6682
6683 unlock:
6684         hci_dev_unlock(hdev);
6685 }
6686
6687 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data,
6688                                       struct sk_buff *skb)
6689 {
6690         struct hci_ev_le_per_adv_report *ev = data;
6691         int mask = hdev->link_mode;
6692         __u8 flags = 0;
6693
6694         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
6695
6696         hci_dev_lock(hdev);
6697
6698         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
6699         if (!(mask & HCI_LM_ACCEPT))
6700                 hci_le_pa_term_sync(hdev, ev->sync_handle);
6701
6702         hci_dev_unlock(hdev);
6703 }
6704
6705 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6706                                             struct sk_buff *skb)
6707 {
6708         struct hci_ev_le_remote_feat_complete *ev = data;
6709         struct hci_conn *conn;
6710
6711         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6712
6713         hci_dev_lock(hdev);
6714
6715         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6716         if (conn) {
6717                 if (!ev->status)
6718                         memcpy(conn->features[0], ev->features, 8);
6719
6720                 if (conn->state == BT_CONFIG) {
6721                         __u8 status;
6722
6723                         /* If the local controller supports peripheral-initiated
6724                          * features exchange, but the remote controller does
6725                          * not, then it is possible that the error code 0x1a
6726                          * for unsupported remote feature gets returned.
6727                          *
6728                          * In this specific case, allow the connection to
6729                          * transition into connected state and mark it as
6730                          * successful.
6731                          */
6732                         if (!conn->out && ev->status == 0x1a &&
6733                             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6734                                 status = 0x00;
6735                         else
6736                                 status = ev->status;
6737
6738                         conn->state = BT_CONNECTED;
6739                         hci_connect_cfm(conn, status);
6740                         hci_conn_drop(conn);
6741                 }
6742         }
6743
6744         hci_dev_unlock(hdev);
6745 }
6746
6747 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6748                                    struct sk_buff *skb)
6749 {
6750         struct hci_ev_le_ltk_req *ev = data;
6751         struct hci_cp_le_ltk_reply cp;
6752         struct hci_cp_le_ltk_neg_reply neg;
6753         struct hci_conn *conn;
6754         struct smp_ltk *ltk;
6755
6756         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6757
6758         hci_dev_lock(hdev);
6759
6760         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6761         if (conn == NULL)
6762                 goto not_found;
6763
6764         ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6765         if (!ltk)
6766                 goto not_found;
6767
6768         if (smp_ltk_is_sc(ltk)) {
6769                 /* With SC both EDiv and Rand are set to zero */
6770                 if (ev->ediv || ev->rand)
6771                         goto not_found;
6772         } else {
6773                 /* For non-SC keys check that EDiv and Rand match */
6774                 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6775                         goto not_found;
6776         }
6777
6778         memcpy(cp.ltk, ltk->val, ltk->enc_size);
6779         memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6780         cp.handle = cpu_to_le16(conn->handle);
6781
6782         conn->pending_sec_level = smp_ltk_sec_level(ltk);
6783
6784         conn->enc_key_size = ltk->enc_size;
6785
6786         hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6787
6788         /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6789          * temporary key used to encrypt a connection following
6790          * pairing. It is used during the Encrypted Session Setup to
6791          * distribute the keys. Later, security can be re-established
6792          * using a distributed LTK.
6793          */
6794         if (ltk->type == SMP_STK) {
6795                 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6796                 list_del_rcu(&ltk->list);
6797                 kfree_rcu(ltk, rcu);
6798         } else {
6799                 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6800         }
6801
6802         hci_dev_unlock(hdev);
6803
6804         return;
6805
6806 not_found:
6807         neg.handle = ev->handle;
6808         hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6809         hci_dev_unlock(hdev);
6810 }
6811
6812 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6813                                       u8 reason)
6814 {
6815         struct hci_cp_le_conn_param_req_neg_reply cp;
6816
6817         cp.handle = cpu_to_le16(handle);
6818         cp.reason = reason;
6819
6820         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6821                      &cp);
6822 }
6823
6824 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6825                                              struct sk_buff *skb)
6826 {
6827         struct hci_ev_le_remote_conn_param_req *ev = data;
6828         struct hci_cp_le_conn_param_req_reply cp;
6829         struct hci_conn *hcon;
6830         u16 handle, min, max, latency, timeout;
6831
6832         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6833
6834         handle = le16_to_cpu(ev->handle);
6835         min = le16_to_cpu(ev->interval_min);
6836         max = le16_to_cpu(ev->interval_max);
6837         latency = le16_to_cpu(ev->latency);
6838         timeout = le16_to_cpu(ev->timeout);
6839
6840         hcon = hci_conn_hash_lookup_handle(hdev, handle);
6841         if (!hcon || hcon->state != BT_CONNECTED)
6842                 return send_conn_param_neg_reply(hdev, handle,
6843                                                  HCI_ERROR_UNKNOWN_CONN_ID);
6844
6845         if (hci_check_conn_params(min, max, latency, timeout))
6846                 return send_conn_param_neg_reply(hdev, handle,
6847                                                  HCI_ERROR_INVALID_LL_PARAMS);
6848
6849         if (hcon->role == HCI_ROLE_MASTER) {
6850                 struct hci_conn_params *params;
6851                 u8 store_hint;
6852
6853                 hci_dev_lock(hdev);
6854
6855                 params = hci_conn_params_lookup(hdev, &hcon->dst,
6856                                                 hcon->dst_type);
6857                 if (params) {
6858                         params->conn_min_interval = min;
6859                         params->conn_max_interval = max;
6860                         params->conn_latency = latency;
6861                         params->supervision_timeout = timeout;
6862                         store_hint = 0x01;
6863                 } else {
6864                         store_hint = 0x00;
6865                 }
6866
6867                 hci_dev_unlock(hdev);
6868
6869                 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6870                                     store_hint, min, max, latency, timeout);
6871         }
6872
6873         cp.handle = ev->handle;
6874         cp.interval_min = ev->interval_min;
6875         cp.interval_max = ev->interval_max;
6876         cp.latency = ev->latency;
6877         cp.timeout = ev->timeout;
6878         cp.min_ce_len = 0;
6879         cp.max_ce_len = 0;
6880
6881         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6882 }
6883
6884 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6885                                          struct sk_buff *skb)
6886 {
6887         struct hci_ev_le_direct_adv_report *ev = data;
6888         u64 instant = jiffies;
6889         int i;
6890
6891         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6892                                 flex_array_size(ev, info, ev->num)))
6893                 return;
6894
6895         if (!ev->num)
6896                 return;
6897
6898         hci_dev_lock(hdev);
6899
6900         for (i = 0; i < ev->num; i++) {
6901                 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6902
6903                 process_adv_report(hdev, info->type, &info->bdaddr,
6904                                    info->bdaddr_type, &info->direct_addr,
6905                                    info->direct_addr_type, info->rssi, NULL, 0,
6906                                    false, false, instant);
6907         }
6908
6909         hci_dev_unlock(hdev);
6910 }
6911
6912 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6913                                   struct sk_buff *skb)
6914 {
6915         struct hci_ev_le_phy_update_complete *ev = data;
6916         struct hci_conn *conn;
6917
6918         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6919
6920         if (ev->status)
6921                 return;
6922
6923         hci_dev_lock(hdev);
6924
6925         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6926         if (!conn)
6927                 goto unlock;
6928
6929         conn->le_tx_phy = ev->tx_phy;
6930         conn->le_rx_phy = ev->rx_phy;
6931
6932 unlock:
6933         hci_dev_unlock(hdev);
6934 }
6935
6936 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
6937                                         struct sk_buff *skb)
6938 {
6939         struct hci_evt_le_cis_established *ev = data;
6940         struct hci_conn *conn;
6941         struct bt_iso_qos *qos;
6942         bool pending = false;
6943         u16 handle = __le16_to_cpu(ev->handle);
6944
6945         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6946
6947         hci_dev_lock(hdev);
6948
6949         conn = hci_conn_hash_lookup_handle(hdev, handle);
6950         if (!conn) {
6951                 bt_dev_err(hdev,
6952                            "Unable to find connection with handle 0x%4.4x",
6953                            handle);
6954                 goto unlock;
6955         }
6956
6957         if (conn->type != ISO_LINK) {
6958                 bt_dev_err(hdev,
6959                            "Invalid connection link type handle 0x%4.4x",
6960                            handle);
6961                 goto unlock;
6962         }
6963
6964         qos = &conn->iso_qos;
6965
6966         pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags);
6967
6968         /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */
6969         qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250;
6970         qos->ucast.out.interval = qos->ucast.in.interval;
6971
6972         switch (conn->role) {
6973         case HCI_ROLE_SLAVE:
6974                 /* Convert Transport Latency (us) to Latency (msec) */
6975                 qos->ucast.in.latency =
6976                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6977                                           1000);
6978                 qos->ucast.out.latency =
6979                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6980                                           1000);
6981                 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu);
6982                 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu);
6983                 qos->ucast.in.phy = ev->c_phy;
6984                 qos->ucast.out.phy = ev->p_phy;
6985                 break;
6986         case HCI_ROLE_MASTER:
6987                 /* Convert Transport Latency (us) to Latency (msec) */
6988                 qos->ucast.out.latency =
6989                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6990                                           1000);
6991                 qos->ucast.in.latency =
6992                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6993                                           1000);
6994                 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu);
6995                 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu);
6996                 qos->ucast.out.phy = ev->c_phy;
6997                 qos->ucast.in.phy = ev->p_phy;
6998                 break;
6999         }
7000
7001         if (!ev->status) {
7002                 conn->state = BT_CONNECTED;
7003                 hci_debugfs_create_conn(conn);
7004                 hci_conn_add_sysfs(conn);
7005                 hci_iso_setup_path(conn);
7006                 goto unlock;
7007         }
7008
7009         conn->state = BT_CLOSED;
7010         hci_connect_cfm(conn, ev->status);
7011         hci_conn_del(conn);
7012
7013 unlock:
7014         if (pending)
7015                 hci_le_create_cis_pending(hdev);
7016
7017         hci_dev_unlock(hdev);
7018 }
7019
7020 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
7021 {
7022         struct hci_cp_le_reject_cis cp;
7023
7024         memset(&cp, 0, sizeof(cp));
7025         cp.handle = handle;
7026         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
7027         hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
7028 }
7029
7030 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
7031 {
7032         struct hci_cp_le_accept_cis cp;
7033
7034         memset(&cp, 0, sizeof(cp));
7035         cp.handle = handle;
7036         hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
7037 }
7038
7039 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
7040                                struct sk_buff *skb)
7041 {
7042         struct hci_evt_le_cis_req *ev = data;
7043         u16 acl_handle, cis_handle;
7044         struct hci_conn *acl, *cis;
7045         int mask;
7046         __u8 flags = 0;
7047
7048         acl_handle = __le16_to_cpu(ev->acl_handle);
7049         cis_handle = __le16_to_cpu(ev->cis_handle);
7050
7051         bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
7052                    acl_handle, cis_handle, ev->cig_id, ev->cis_id);
7053
7054         hci_dev_lock(hdev);
7055
7056         acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
7057         if (!acl)
7058                 goto unlock;
7059
7060         mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
7061         if (!(mask & HCI_LM_ACCEPT)) {
7062                 hci_le_reject_cis(hdev, ev->cis_handle);
7063                 goto unlock;
7064         }
7065
7066         cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
7067         if (!cis) {
7068                 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE,
7069                                    cis_handle);
7070                 if (!cis) {
7071                         hci_le_reject_cis(hdev, ev->cis_handle);
7072                         goto unlock;
7073                 }
7074         }
7075
7076         cis->iso_qos.ucast.cig = ev->cig_id;
7077         cis->iso_qos.ucast.cis = ev->cis_id;
7078
7079         if (!(flags & HCI_PROTO_DEFER)) {
7080                 hci_le_accept_cis(hdev, ev->cis_handle);
7081         } else {
7082                 cis->state = BT_CONNECT2;
7083                 hci_connect_cfm(cis, 0);
7084         }
7085
7086 unlock:
7087         hci_dev_unlock(hdev);
7088 }
7089
7090 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data)
7091 {
7092         u8 handle = PTR_UINT(data);
7093
7094         return hci_le_terminate_big_sync(hdev, handle,
7095                                          HCI_ERROR_LOCAL_HOST_TERM);
7096 }
7097
7098 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
7099                                            struct sk_buff *skb)
7100 {
7101         struct hci_evt_le_create_big_complete *ev = data;
7102         struct hci_conn *conn;
7103         __u8 i = 0;
7104
7105         BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
7106
7107         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
7108                                 flex_array_size(ev, bis_handle, ev->num_bis)))
7109                 return;
7110
7111         hci_dev_lock(hdev);
7112         rcu_read_lock();
7113
7114         /* Connect all BISes that are bound to the BIG */
7115         list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
7116                 if (bacmp(&conn->dst, BDADDR_ANY) ||
7117                     conn->type != ISO_LINK ||
7118                     conn->iso_qos.bcast.big != ev->handle)
7119                         continue;
7120
7121                 if (hci_conn_set_handle(conn,
7122                                         __le16_to_cpu(ev->bis_handle[i++])))
7123                         continue;
7124
7125                 if (!ev->status) {
7126                         conn->state = BT_CONNECTED;
7127                         set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
7128                         rcu_read_unlock();
7129                         hci_debugfs_create_conn(conn);
7130                         hci_conn_add_sysfs(conn);
7131                         hci_iso_setup_path(conn);
7132                         rcu_read_lock();
7133                         continue;
7134                 }
7135
7136                 hci_connect_cfm(conn, ev->status);
7137                 rcu_read_unlock();
7138                 hci_conn_del(conn);
7139                 rcu_read_lock();
7140         }
7141
7142         rcu_read_unlock();
7143
7144         if (!ev->status && !i)
7145                 /* If no BISes have been connected for the BIG,
7146                  * terminate. This is in case all bound connections
7147                  * have been closed before the BIG creation
7148                  * has completed.
7149                  */
7150                 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
7151                                    UINT_PTR(ev->handle), NULL);
7152
7153         hci_dev_unlock(hdev);
7154 }
7155
7156 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
7157                                             struct sk_buff *skb)
7158 {
7159         struct hci_evt_le_big_sync_estabilished *ev = data;
7160         struct hci_conn *bis;
7161         struct hci_conn *pa_sync;
7162         int i;
7163
7164         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7165
7166         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7167                                 flex_array_size(ev, bis, ev->num_bis)))
7168                 return;
7169
7170         hci_dev_lock(hdev);
7171
7172         if (!ev->status) {
7173                 pa_sync = hci_conn_hash_lookup_pa_sync_big_handle(hdev, ev->handle);
7174                 if (pa_sync)
7175                         /* Also mark the BIG sync established event on the
7176                          * associated PA sync hcon
7177                          */
7178                         set_bit(HCI_CONN_BIG_SYNC, &pa_sync->flags);
7179         }
7180
7181         for (i = 0; i < ev->num_bis; i++) {
7182                 u16 handle = le16_to_cpu(ev->bis[i]);
7183                 __le32 interval;
7184
7185                 bis = hci_conn_hash_lookup_handle(hdev, handle);
7186                 if (!bis) {
7187                         bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
7188                                            HCI_ROLE_SLAVE, handle);
7189                         if (!bis)
7190                                 continue;
7191                 }
7192
7193                 if (ev->status != 0x42)
7194                         /* Mark PA sync as established */
7195                         set_bit(HCI_CONN_PA_SYNC, &bis->flags);
7196
7197                 bis->iso_qos.bcast.big = ev->handle;
7198                 memset(&interval, 0, sizeof(interval));
7199                 memcpy(&interval, ev->latency, sizeof(ev->latency));
7200                 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval);
7201                 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7202                 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7203                 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
7204
7205                 if (!ev->status) {
7206                         set_bit(HCI_CONN_BIG_SYNC, &bis->flags);
7207                         hci_iso_setup_path(bis);
7208                 }
7209         }
7210
7211         /* In case BIG sync failed, notify each failed connection to
7212          * the user after all hci connections have been added
7213          */
7214         if (ev->status)
7215                 for (i = 0; i < ev->num_bis; i++) {
7216                         u16 handle = le16_to_cpu(ev->bis[i]);
7217
7218                         bis = hci_conn_hash_lookup_handle(hdev, handle);
7219
7220                         set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags);
7221                         hci_connect_cfm(bis, ev->status);
7222                 }
7223
7224         hci_dev_unlock(hdev);
7225 }
7226
7227 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7228                                            struct sk_buff *skb)
7229 {
7230         struct hci_evt_le_big_info_adv_report *ev = data;
7231         int mask = hdev->link_mode;
7232         __u8 flags = 0;
7233         struct hci_conn *pa_sync;
7234
7235         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7236
7237         hci_dev_lock(hdev);
7238
7239         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7240         if (!(mask & HCI_LM_ACCEPT)) {
7241                 hci_le_pa_term_sync(hdev, ev->sync_handle);
7242                 goto unlock;
7243         }
7244
7245         if (!(flags & HCI_PROTO_DEFER))
7246                 goto unlock;
7247
7248         pa_sync = hci_conn_hash_lookup_pa_sync_handle
7249                         (hdev,
7250                         le16_to_cpu(ev->sync_handle));
7251
7252         if (pa_sync)
7253                 goto unlock;
7254
7255         /* Add connection to indicate the PA sync event */
7256         pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
7257                                      HCI_ROLE_SLAVE);
7258
7259         if (!pa_sync)
7260                 goto unlock;
7261
7262         pa_sync->sync_handle = le16_to_cpu(ev->sync_handle);
7263         set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags);
7264
7265         /* Notify iso layer */
7266         hci_connect_cfm(pa_sync, 0x00);
7267
7268 unlock:
7269         hci_dev_unlock(hdev);
7270 }
7271
7272 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7273 [_op] = { \
7274         .func = _func, \
7275         .min_len = _min_len, \
7276         .max_len = _max_len, \
7277 }
7278
7279 #define HCI_LE_EV(_op, _func, _len) \
7280         HCI_LE_EV_VL(_op, _func, _len, _len)
7281
7282 #define HCI_LE_EV_STATUS(_op, _func) \
7283         HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7284
7285 /* Entries in this table shall have their position according to the subevent
7286  * opcode they handle so the use of the macros above is recommend since it does
7287  * attempt to initialize at its proper index using Designated Initializers that
7288  * way events without a callback function can be ommited.
7289  */
7290 static const struct hci_le_ev {
7291         void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7292         u16  min_len;
7293         u16  max_len;
7294 } hci_le_ev_table[U8_MAX + 1] = {
7295         /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7296         HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7297                   sizeof(struct hci_ev_le_conn_complete)),
7298         /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7299         HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7300                      sizeof(struct hci_ev_le_advertising_report),
7301                      HCI_MAX_EVENT_SIZE),
7302         /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7303         HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7304                   hci_le_conn_update_complete_evt,
7305                   sizeof(struct hci_ev_le_conn_update_complete)),
7306         /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7307         HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7308                   hci_le_remote_feat_complete_evt,
7309                   sizeof(struct hci_ev_le_remote_feat_complete)),
7310         /* [0x05 = HCI_EV_LE_LTK_REQ] */
7311         HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7312                   sizeof(struct hci_ev_le_ltk_req)),
7313         /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7314         HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7315                   hci_le_remote_conn_param_req_evt,
7316                   sizeof(struct hci_ev_le_remote_conn_param_req)),
7317         /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7318         HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7319                   hci_le_enh_conn_complete_evt,
7320                   sizeof(struct hci_ev_le_enh_conn_complete)),
7321         /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7322         HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7323                      sizeof(struct hci_ev_le_direct_adv_report),
7324                      HCI_MAX_EVENT_SIZE),
7325         /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7326         HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7327                   sizeof(struct hci_ev_le_phy_update_complete)),
7328         /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7329         HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7330                      sizeof(struct hci_ev_le_ext_adv_report),
7331                      HCI_MAX_EVENT_SIZE),
7332         /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7333         HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7334                   hci_le_pa_sync_estabilished_evt,
7335                   sizeof(struct hci_ev_le_pa_sync_established)),
7336         /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */
7337         HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT,
7338                                  hci_le_per_adv_report_evt,
7339                                  sizeof(struct hci_ev_le_per_adv_report),
7340                                  HCI_MAX_EVENT_SIZE),
7341         /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7342         HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7343                   sizeof(struct hci_evt_le_ext_adv_set_term)),
7344         /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7345         HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7346                   sizeof(struct hci_evt_le_cis_established)),
7347         /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7348         HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7349                   sizeof(struct hci_evt_le_cis_req)),
7350         /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7351         HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7352                      hci_le_create_big_complete_evt,
7353                      sizeof(struct hci_evt_le_create_big_complete),
7354                      HCI_MAX_EVENT_SIZE),
7355         /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7356         HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7357                      hci_le_big_sync_established_evt,
7358                      sizeof(struct hci_evt_le_big_sync_estabilished),
7359                      HCI_MAX_EVENT_SIZE),
7360         /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7361         HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7362                      hci_le_big_info_adv_report_evt,
7363                      sizeof(struct hci_evt_le_big_info_adv_report),
7364                      HCI_MAX_EVENT_SIZE),
7365 };
7366
7367 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7368                             struct sk_buff *skb, u16 *opcode, u8 *status,
7369                             hci_req_complete_t *req_complete,
7370                             hci_req_complete_skb_t *req_complete_skb)
7371 {
7372         struct hci_ev_le_meta *ev = data;
7373         const struct hci_le_ev *subev;
7374
7375         bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7376
7377         /* Only match event if command OGF is for LE */
7378         if (hdev->sent_cmd &&
7379             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7380             hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7381                 *opcode = hci_skb_opcode(hdev->sent_cmd);
7382                 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7383                                      req_complete_skb);
7384         }
7385
7386         subev = &hci_le_ev_table[ev->subevent];
7387         if (!subev->func)
7388                 return;
7389
7390         if (skb->len < subev->min_len) {
7391                 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7392                            ev->subevent, skb->len, subev->min_len);
7393                 return;
7394         }
7395
7396         /* Just warn if the length is over max_len size it still be
7397          * possible to partially parse the event so leave to callback to
7398          * decide if that is acceptable.
7399          */
7400         if (skb->len > subev->max_len)
7401                 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7402                             ev->subevent, skb->len, subev->max_len);
7403         data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7404         if (!data)
7405                 return;
7406
7407         subev->func(hdev, data, skb);
7408 }
7409
7410 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7411                                  u8 event, struct sk_buff *skb)
7412 {
7413         struct hci_ev_cmd_complete *ev;
7414         struct hci_event_hdr *hdr;
7415
7416         if (!skb)
7417                 return false;
7418
7419         hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7420         if (!hdr)
7421                 return false;
7422
7423         if (event) {
7424                 if (hdr->evt != event)
7425                         return false;
7426                 return true;
7427         }
7428
7429         /* Check if request ended in Command Status - no way to retrieve
7430          * any extra parameters in this case.
7431          */
7432         if (hdr->evt == HCI_EV_CMD_STATUS)
7433                 return false;
7434
7435         if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7436                 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7437                            hdr->evt);
7438                 return false;
7439         }
7440
7441         ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7442         if (!ev)
7443                 return false;
7444
7445         if (opcode != __le16_to_cpu(ev->opcode)) {
7446                 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7447                        __le16_to_cpu(ev->opcode));
7448                 return false;
7449         }
7450
7451         return true;
7452 }
7453
7454 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7455                                   struct sk_buff *skb)
7456 {
7457         struct hci_ev_le_advertising_info *adv;
7458         struct hci_ev_le_direct_adv_info *direct_adv;
7459         struct hci_ev_le_ext_adv_info *ext_adv;
7460         const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7461         const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7462
7463         hci_dev_lock(hdev);
7464
7465         /* If we are currently suspended and this is the first BT event seen,
7466          * save the wake reason associated with the event.
7467          */
7468         if (!hdev->suspended || hdev->wake_reason)
7469                 goto unlock;
7470
7471         /* Default to remote wake. Values for wake_reason are documented in the
7472          * Bluez mgmt api docs.
7473          */
7474         hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7475
7476         /* Once configured for remote wakeup, we should only wake up for
7477          * reconnections. It's useful to see which device is waking us up so
7478          * keep track of the bdaddr of the connection event that woke us up.
7479          */
7480         if (event == HCI_EV_CONN_REQUEST) {
7481                 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7482                 hdev->wake_addr_type = BDADDR_BREDR;
7483         } else if (event == HCI_EV_CONN_COMPLETE) {
7484                 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7485                 hdev->wake_addr_type = BDADDR_BREDR;
7486         } else if (event == HCI_EV_LE_META) {
7487                 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7488                 u8 subevent = le_ev->subevent;
7489                 u8 *ptr = &skb->data[sizeof(*le_ev)];
7490                 u8 num_reports = *ptr;
7491
7492                 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7493                      subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7494                      subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7495                     num_reports) {
7496                         adv = (void *)(ptr + 1);
7497                         direct_adv = (void *)(ptr + 1);
7498                         ext_adv = (void *)(ptr + 1);
7499
7500                         switch (subevent) {
7501                         case HCI_EV_LE_ADVERTISING_REPORT:
7502                                 bacpy(&hdev->wake_addr, &adv->bdaddr);
7503                                 hdev->wake_addr_type = adv->bdaddr_type;
7504                                 break;
7505                         case HCI_EV_LE_DIRECT_ADV_REPORT:
7506                                 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7507                                 hdev->wake_addr_type = direct_adv->bdaddr_type;
7508                                 break;
7509                         case HCI_EV_LE_EXT_ADV_REPORT:
7510                                 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7511                                 hdev->wake_addr_type = ext_adv->bdaddr_type;
7512                                 break;
7513                         }
7514                 }
7515         } else {
7516                 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7517         }
7518
7519 unlock:
7520         hci_dev_unlock(hdev);
7521 }
7522
7523 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7524 [_op] = { \
7525         .req = false, \
7526         .func = _func, \
7527         .min_len = _min_len, \
7528         .max_len = _max_len, \
7529 }
7530
7531 #define HCI_EV(_op, _func, _len) \
7532         HCI_EV_VL(_op, _func, _len, _len)
7533
7534 #define HCI_EV_STATUS(_op, _func) \
7535         HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7536
7537 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7538 [_op] = { \
7539         .req = true, \
7540         .func_req = _func, \
7541         .min_len = _min_len, \
7542         .max_len = _max_len, \
7543 }
7544
7545 #define HCI_EV_REQ(_op, _func, _len) \
7546         HCI_EV_REQ_VL(_op, _func, _len, _len)
7547
7548 /* Entries in this table shall have their position according to the event opcode
7549  * they handle so the use of the macros above is recommend since it does attempt
7550  * to initialize at its proper index using Designated Initializers that way
7551  * events without a callback function don't have entered.
7552  */
7553 static const struct hci_ev {
7554         bool req;
7555         union {
7556                 void (*func)(struct hci_dev *hdev, void *data,
7557                              struct sk_buff *skb);
7558                 void (*func_req)(struct hci_dev *hdev, void *data,
7559                                  struct sk_buff *skb, u16 *opcode, u8 *status,
7560                                  hci_req_complete_t *req_complete,
7561                                  hci_req_complete_skb_t *req_complete_skb);
7562         };
7563         u16  min_len;
7564         u16  max_len;
7565 } hci_ev_table[U8_MAX + 1] = {
7566         /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7567         HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7568         /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7569         HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7570                   sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7571         /* [0x03 = HCI_EV_CONN_COMPLETE] */
7572         HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7573                sizeof(struct hci_ev_conn_complete)),
7574         /* [0x04 = HCI_EV_CONN_REQUEST] */
7575         HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7576                sizeof(struct hci_ev_conn_request)),
7577         /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7578         HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7579                sizeof(struct hci_ev_disconn_complete)),
7580         /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7581         HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7582                sizeof(struct hci_ev_auth_complete)),
7583         /* [0x07 = HCI_EV_REMOTE_NAME] */
7584         HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7585                sizeof(struct hci_ev_remote_name)),
7586         /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7587         HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7588                sizeof(struct hci_ev_encrypt_change)),
7589         /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7590         HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7591                hci_change_link_key_complete_evt,
7592                sizeof(struct hci_ev_change_link_key_complete)),
7593         /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7594         HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7595                sizeof(struct hci_ev_remote_features)),
7596         /* [0x0e = HCI_EV_CMD_COMPLETE] */
7597         HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7598                       sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7599         /* [0x0f = HCI_EV_CMD_STATUS] */
7600         HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7601                    sizeof(struct hci_ev_cmd_status)),
7602         /* [0x10 = HCI_EV_CMD_STATUS] */
7603         HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7604                sizeof(struct hci_ev_hardware_error)),
7605         /* [0x12 = HCI_EV_ROLE_CHANGE] */
7606         HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7607                sizeof(struct hci_ev_role_change)),
7608         /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7609         HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7610                   sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7611         /* [0x14 = HCI_EV_MODE_CHANGE] */
7612         HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7613                sizeof(struct hci_ev_mode_change)),
7614         /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7615         HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7616                sizeof(struct hci_ev_pin_code_req)),
7617         /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7618         HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7619                sizeof(struct hci_ev_link_key_req)),
7620         /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7621         HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7622                sizeof(struct hci_ev_link_key_notify)),
7623         /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7624         HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7625                sizeof(struct hci_ev_clock_offset)),
7626         /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7627         HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7628                sizeof(struct hci_ev_pkt_type_change)),
7629         /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7630         HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7631                sizeof(struct hci_ev_pscan_rep_mode)),
7632         /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7633         HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7634                   hci_inquiry_result_with_rssi_evt,
7635                   sizeof(struct hci_ev_inquiry_result_rssi),
7636                   HCI_MAX_EVENT_SIZE),
7637         /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7638         HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7639                sizeof(struct hci_ev_remote_ext_features)),
7640         /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7641         HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7642                sizeof(struct hci_ev_sync_conn_complete)),
7643         /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7644         HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7645                   hci_extended_inquiry_result_evt,
7646                   sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7647         /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7648         HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7649                sizeof(struct hci_ev_key_refresh_complete)),
7650         /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7651         HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7652                sizeof(struct hci_ev_io_capa_request)),
7653         /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7654         HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7655                sizeof(struct hci_ev_io_capa_reply)),
7656         /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7657         HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7658                sizeof(struct hci_ev_user_confirm_req)),
7659         /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7660         HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7661                sizeof(struct hci_ev_user_passkey_req)),
7662         /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7663         HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7664                sizeof(struct hci_ev_remote_oob_data_request)),
7665         /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7666         HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7667                sizeof(struct hci_ev_simple_pair_complete)),
7668         /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7669         HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7670                sizeof(struct hci_ev_user_passkey_notify)),
7671         /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7672         HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7673                sizeof(struct hci_ev_keypress_notify)),
7674         /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7675         HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7676                sizeof(struct hci_ev_remote_host_features)),
7677         /* [0x3e = HCI_EV_LE_META] */
7678         HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7679                       sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7680 #if IS_ENABLED(CONFIG_BT_HS)
7681         /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7682         HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7683                sizeof(struct hci_ev_phy_link_complete)),
7684         /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7685         HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7686                sizeof(struct hci_ev_channel_selected)),
7687         /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7688         HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7689                hci_disconn_loglink_complete_evt,
7690                sizeof(struct hci_ev_disconn_logical_link_complete)),
7691         /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7692         HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7693                sizeof(struct hci_ev_logical_link_complete)),
7694         /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7695         HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7696                hci_disconn_phylink_complete_evt,
7697                sizeof(struct hci_ev_disconn_phy_link_complete)),
7698 #endif
7699         /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7700         HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7701                sizeof(struct hci_ev_num_comp_blocks)),
7702         /* [0xff = HCI_EV_VENDOR] */
7703         HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7704 };
7705
7706 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7707                            u16 *opcode, u8 *status,
7708                            hci_req_complete_t *req_complete,
7709                            hci_req_complete_skb_t *req_complete_skb)
7710 {
7711         const struct hci_ev *ev = &hci_ev_table[event];
7712         void *data;
7713
7714         if (!ev->func)
7715                 return;
7716
7717         if (skb->len < ev->min_len) {
7718                 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7719                            event, skb->len, ev->min_len);
7720                 return;
7721         }
7722
7723         /* Just warn if the length is over max_len size it still be
7724          * possible to partially parse the event so leave to callback to
7725          * decide if that is acceptable.
7726          */
7727         if (skb->len > ev->max_len)
7728                 bt_dev_warn_ratelimited(hdev,
7729                                         "unexpected event 0x%2.2x length: %u > %u",
7730                                         event, skb->len, ev->max_len);
7731
7732         data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7733         if (!data)
7734                 return;
7735
7736         if (ev->req)
7737                 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7738                              req_complete_skb);
7739         else
7740                 ev->func(hdev, data, skb);
7741 }
7742
7743 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7744 {
7745         struct hci_event_hdr *hdr = (void *) skb->data;
7746         hci_req_complete_t req_complete = NULL;
7747         hci_req_complete_skb_t req_complete_skb = NULL;
7748         struct sk_buff *orig_skb = NULL;
7749         u8 status = 0, event, req_evt = 0;
7750         u16 opcode = HCI_OP_NOP;
7751
7752         if (skb->len < sizeof(*hdr)) {
7753                 bt_dev_err(hdev, "Malformed HCI Event");
7754                 goto done;
7755         }
7756
7757         kfree_skb(hdev->recv_event);
7758         hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7759
7760         event = hdr->evt;
7761         if (!event) {
7762                 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7763                             event);
7764                 goto done;
7765         }
7766
7767         /* Only match event if command OGF is not for LE */
7768         if (hdev->sent_cmd &&
7769             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7770             hci_skb_event(hdev->sent_cmd) == event) {
7771                 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7772                                      status, &req_complete, &req_complete_skb);
7773                 req_evt = event;
7774         }
7775
7776         /* If it looks like we might end up having to call
7777          * req_complete_skb, store a pristine copy of the skb since the
7778          * various handlers may modify the original one through
7779          * skb_pull() calls, etc.
7780          */
7781         if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7782             event == HCI_EV_CMD_COMPLETE)
7783                 orig_skb = skb_clone(skb, GFP_KERNEL);
7784
7785         skb_pull(skb, HCI_EVENT_HDR_SIZE);
7786
7787         /* Store wake reason if we're suspended */
7788         hci_store_wake_reason(hdev, event, skb);
7789
7790         bt_dev_dbg(hdev, "event 0x%2.2x", event);
7791
7792         hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7793                        &req_complete_skb);
7794
7795         if (req_complete) {
7796                 req_complete(hdev, status, opcode);
7797         } else if (req_complete_skb) {
7798                 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7799                         kfree_skb(orig_skb);
7800                         orig_skb = NULL;
7801                 }
7802                 req_complete_skb(hdev, status, opcode, orig_skb);
7803         }
7804
7805 done:
7806         kfree_skb(orig_skb);
7807         kfree_skb(skb);
7808         hdev->stat.evt_rx++;
7809 }