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
2268 static void hci_vendor_specific_group_ext_evt(struct hci_dev *hdev,
2269                                               struct sk_buff *skb)
2270 {
2271         struct hci_ev_ext_vendor_specific *ev = (void *)skb->data;
2272         __u8 event_le_ext_sub_code;
2273
2274         BT_DBG("RSSI event LE_META_VENDOR_SPECIFIC_GROUP_EVENT: %X",
2275                LE_META_VENDOR_SPECIFIC_GROUP_EVENT);
2276
2277         skb_pull(skb, sizeof(*ev));
2278         event_le_ext_sub_code = ev->event_le_ext_sub_code;
2279
2280         switch (event_le_ext_sub_code) {
2281         case LE_RSSI_LINK_ALERT:
2282                 BT_DBG("RSSI event LE_RSSI_LINK_ALERT %X",
2283                        LE_RSSI_LINK_ALERT);
2284                 mgmt_rssi_alert_evt(hdev, skb);
2285                 break;
2286
2287         default:
2288                 break;
2289         }
2290 }
2291
2292 static void hci_vendor_specific_evt(struct hci_dev *hdev, void *data,
2293                                     struct sk_buff *skb)
2294 {
2295         struct hci_ev_vendor_specific *ev = (void *)skb->data;
2296         __u8 event_sub_code;
2297
2298         BT_DBG("hci_vendor_specific_evt");
2299
2300         skb_pull(skb, sizeof(*ev));
2301         event_sub_code = ev->event_sub_code;
2302
2303         switch (event_sub_code) {
2304         case LE_META_VENDOR_SPECIFIC_GROUP_EVENT:
2305                 hci_vendor_specific_group_ext_evt(hdev, skb);
2306                 break;
2307
2308         default:
2309                 break;
2310         }
2311 }
2312 #endif
2313
2314 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2315                            struct sk_buff *skb)
2316 {
2317         struct hci_rp_read_rssi *rp = data;
2318         struct hci_conn *conn;
2319
2320         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2321
2322         if (rp->status)
2323                 return rp->status;
2324
2325         hci_dev_lock(hdev);
2326
2327         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2328         if (conn)
2329                 conn->rssi = rp->rssi;
2330
2331         hci_dev_unlock(hdev);
2332
2333         return rp->status;
2334 }
2335
2336 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2337                                struct sk_buff *skb)
2338 {
2339         struct hci_cp_read_tx_power *sent;
2340         struct hci_rp_read_tx_power *rp = data;
2341         struct hci_conn *conn;
2342
2343         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2344
2345         if (rp->status)
2346                 return rp->status;
2347
2348         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2349         if (!sent)
2350                 return rp->status;
2351
2352         hci_dev_lock(hdev);
2353
2354         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2355         if (!conn)
2356                 goto unlock;
2357
2358         switch (sent->type) {
2359         case 0x00:
2360                 conn->tx_power = rp->tx_power;
2361                 break;
2362         case 0x01:
2363                 conn->max_tx_power = rp->tx_power;
2364                 break;
2365         }
2366
2367 unlock:
2368         hci_dev_unlock(hdev);
2369         return rp->status;
2370 }
2371
2372 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2373                                       struct sk_buff *skb)
2374 {
2375         struct hci_ev_status *rp = data;
2376         u8 *mode;
2377
2378         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2379
2380         if (rp->status)
2381                 return rp->status;
2382
2383         mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2384         if (mode)
2385                 hdev->ssp_debug_mode = *mode;
2386
2387         return rp->status;
2388 }
2389
2390 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2391 {
2392         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2393
2394         if (status) {
2395                 hci_conn_check_pending(hdev);
2396                 return;
2397         }
2398
2399         if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY))
2400                 set_bit(HCI_INQUIRY, &hdev->flags);
2401 }
2402
2403 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2404 {
2405         struct hci_cp_create_conn *cp;
2406         struct hci_conn *conn;
2407
2408         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2409
2410         cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2411         if (!cp)
2412                 return;
2413
2414         hci_dev_lock(hdev);
2415
2416         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2417
2418         bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2419
2420         if (status) {
2421                 if (conn && conn->state == BT_CONNECT) {
2422                         if (status != 0x0c || conn->attempt > 2) {
2423                                 conn->state = BT_CLOSED;
2424                                 hci_connect_cfm(conn, status);
2425                                 hci_conn_del(conn);
2426                         } else
2427                                 conn->state = BT_CONNECT2;
2428                 }
2429         } else {
2430                 if (!conn) {
2431                         conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr,
2432                                                   HCI_ROLE_MASTER);
2433                         if (!conn)
2434                                 bt_dev_err(hdev, "no memory for new connection");
2435                 }
2436         }
2437
2438         hci_dev_unlock(hdev);
2439 }
2440
2441 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2442 {
2443         struct hci_cp_add_sco *cp;
2444         struct hci_conn *acl;
2445         struct hci_link *link;
2446         __u16 handle;
2447
2448         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2449
2450         if (!status)
2451                 return;
2452
2453         cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2454         if (!cp)
2455                 return;
2456
2457         handle = __le16_to_cpu(cp->handle);
2458
2459         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2460
2461         hci_dev_lock(hdev);
2462
2463         acl = hci_conn_hash_lookup_handle(hdev, handle);
2464         if (acl) {
2465                 link = list_first_entry_or_null(&acl->link_list,
2466                                                 struct hci_link, list);
2467                 if (link && link->conn) {
2468                         link->conn->state = BT_CLOSED;
2469
2470                         hci_connect_cfm(link->conn, status);
2471                         hci_conn_del(link->conn);
2472                 }
2473         }
2474
2475         hci_dev_unlock(hdev);
2476 }
2477
2478 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2479 {
2480         struct hci_cp_auth_requested *cp;
2481         struct hci_conn *conn;
2482
2483         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2484
2485         if (!status)
2486                 return;
2487
2488         cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2489         if (!cp)
2490                 return;
2491
2492         hci_dev_lock(hdev);
2493
2494         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2495         if (conn) {
2496                 if (conn->state == BT_CONFIG) {
2497                         hci_connect_cfm(conn, status);
2498                         hci_conn_drop(conn);
2499                 }
2500         }
2501
2502         hci_dev_unlock(hdev);
2503 }
2504
2505 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2506 {
2507         struct hci_cp_set_conn_encrypt *cp;
2508         struct hci_conn *conn;
2509
2510         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2511
2512         if (!status)
2513                 return;
2514
2515         cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2516         if (!cp)
2517                 return;
2518
2519         hci_dev_lock(hdev);
2520
2521         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2522         if (conn) {
2523                 if (conn->state == BT_CONFIG) {
2524                         hci_connect_cfm(conn, status);
2525                         hci_conn_drop(conn);
2526                 }
2527         }
2528
2529         hci_dev_unlock(hdev);
2530 }
2531
2532 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2533                                     struct hci_conn *conn)
2534 {
2535         if (conn->state != BT_CONFIG || !conn->out)
2536                 return 0;
2537
2538         if (conn->pending_sec_level == BT_SECURITY_SDP)
2539                 return 0;
2540
2541         /* Only request authentication for SSP connections or non-SSP
2542          * devices with sec_level MEDIUM or HIGH or if MITM protection
2543          * is requested.
2544          */
2545         if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2546             conn->pending_sec_level != BT_SECURITY_FIPS &&
2547             conn->pending_sec_level != BT_SECURITY_HIGH &&
2548             conn->pending_sec_level != BT_SECURITY_MEDIUM)
2549                 return 0;
2550
2551         return 1;
2552 }
2553
2554 static int hci_resolve_name(struct hci_dev *hdev,
2555                                    struct inquiry_entry *e)
2556 {
2557         struct hci_cp_remote_name_req cp;
2558
2559         memset(&cp, 0, sizeof(cp));
2560
2561         bacpy(&cp.bdaddr, &e->data.bdaddr);
2562         cp.pscan_rep_mode = e->data.pscan_rep_mode;
2563         cp.pscan_mode = e->data.pscan_mode;
2564         cp.clock_offset = e->data.clock_offset;
2565
2566         return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2567 }
2568
2569 static bool hci_resolve_next_name(struct hci_dev *hdev)
2570 {
2571         struct discovery_state *discov = &hdev->discovery;
2572         struct inquiry_entry *e;
2573
2574         if (list_empty(&discov->resolve))
2575                 return false;
2576
2577         /* We should stop if we already spent too much time resolving names. */
2578         if (time_after(jiffies, discov->name_resolve_timeout)) {
2579                 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2580                 return false;
2581         }
2582
2583         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2584         if (!e)
2585                 return false;
2586
2587         if (hci_resolve_name(hdev, e) == 0) {
2588                 e->name_state = NAME_PENDING;
2589                 return true;
2590         }
2591
2592         return false;
2593 }
2594
2595 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2596                                    bdaddr_t *bdaddr, u8 *name, u8 name_len)
2597 {
2598         struct discovery_state *discov = &hdev->discovery;
2599         struct inquiry_entry *e;
2600
2601 #ifdef TIZEN_BT
2602         /* Update the mgmt connected state if necessary. Be careful with
2603          * conn objects that exist but are not (yet) connected however.
2604          * Only those in BT_CONFIG or BT_CONNECTED states can be
2605          * considered connected.
2606          */
2607         if (conn &&
2608             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) {
2609                 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2610                         mgmt_device_connected(hdev, conn, name, name_len);
2611                 else
2612                         mgmt_device_name_update(hdev, bdaddr, name, name_len);
2613         }
2614 #else
2615         if (conn &&
2616             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2617             !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2618                 mgmt_device_connected(hdev, conn, name, name_len);
2619 #endif
2620
2621         if (discov->state == DISCOVERY_STOPPED)
2622                 return;
2623
2624         if (discov->state == DISCOVERY_STOPPING)
2625                 goto discov_complete;
2626
2627         if (discov->state != DISCOVERY_RESOLVING)
2628                 return;
2629
2630         e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2631         /* If the device was not found in a list of found devices names of which
2632          * are pending. there is no need to continue resolving a next name as it
2633          * will be done upon receiving another Remote Name Request Complete
2634          * Event */
2635         if (!e)
2636                 return;
2637
2638         list_del(&e->list);
2639
2640         e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2641         mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2642                          name, name_len);
2643
2644         if (hci_resolve_next_name(hdev))
2645                 return;
2646
2647 discov_complete:
2648         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2649 }
2650
2651 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2652 {
2653         struct hci_cp_remote_name_req *cp;
2654         struct hci_conn *conn;
2655
2656         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2657
2658         /* If successful wait for the name req complete event before
2659          * checking for the need to do authentication */
2660         if (!status)
2661                 return;
2662
2663         cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2664         if (!cp)
2665                 return;
2666
2667         hci_dev_lock(hdev);
2668
2669         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2670
2671         if (hci_dev_test_flag(hdev, HCI_MGMT))
2672                 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2673
2674         if (!conn)
2675                 goto unlock;
2676
2677         if (!hci_outgoing_auth_needed(hdev, conn))
2678                 goto unlock;
2679
2680         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2681                 struct hci_cp_auth_requested auth_cp;
2682
2683                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2684
2685                 auth_cp.handle = __cpu_to_le16(conn->handle);
2686                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2687                              sizeof(auth_cp), &auth_cp);
2688         }
2689
2690 unlock:
2691         hci_dev_unlock(hdev);
2692 }
2693
2694 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2695 {
2696         struct hci_cp_read_remote_features *cp;
2697         struct hci_conn *conn;
2698
2699         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2700
2701         if (!status)
2702                 return;
2703
2704         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2705         if (!cp)
2706                 return;
2707
2708         hci_dev_lock(hdev);
2709
2710         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2711         if (conn) {
2712                 if (conn->state == BT_CONFIG) {
2713                         hci_connect_cfm(conn, status);
2714                         hci_conn_drop(conn);
2715                 }
2716         }
2717
2718         hci_dev_unlock(hdev);
2719 }
2720
2721 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2722 {
2723         struct hci_cp_read_remote_ext_features *cp;
2724         struct hci_conn *conn;
2725
2726         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2727
2728         if (!status)
2729                 return;
2730
2731         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2732         if (!cp)
2733                 return;
2734
2735         hci_dev_lock(hdev);
2736
2737         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2738         if (conn) {
2739                 if (conn->state == BT_CONFIG) {
2740                         hci_connect_cfm(conn, status);
2741                         hci_conn_drop(conn);
2742                 }
2743         }
2744
2745         hci_dev_unlock(hdev);
2746 }
2747
2748 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle,
2749                                        __u8 status)
2750 {
2751         struct hci_conn *acl;
2752         struct hci_link *link;
2753
2754         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status);
2755
2756         hci_dev_lock(hdev);
2757
2758         acl = hci_conn_hash_lookup_handle(hdev, handle);
2759         if (acl) {
2760                 link = list_first_entry_or_null(&acl->link_list,
2761                                                 struct hci_link, list);
2762                 if (link && link->conn) {
2763                         link->conn->state = BT_CLOSED;
2764
2765                         hci_connect_cfm(link->conn, status);
2766                         hci_conn_del(link->conn);
2767                 }
2768         }
2769
2770         hci_dev_unlock(hdev);
2771 }
2772
2773 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2774 {
2775         struct hci_cp_setup_sync_conn *cp;
2776
2777         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2778
2779         if (!status)
2780                 return;
2781
2782         cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2783         if (!cp)
2784                 return;
2785
2786         hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2787 }
2788
2789 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2790 {
2791         struct hci_cp_enhanced_setup_sync_conn *cp;
2792
2793         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2794
2795         if (!status)
2796                 return;
2797
2798         cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2799         if (!cp)
2800                 return;
2801
2802         hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2803 }
2804
2805 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2806 {
2807         struct hci_cp_sniff_mode *cp;
2808         struct hci_conn *conn;
2809
2810         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2811
2812         if (!status)
2813                 return;
2814
2815         cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2816         if (!cp)
2817                 return;
2818
2819         hci_dev_lock(hdev);
2820
2821         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2822         if (conn) {
2823                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2824
2825                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2826                         hci_sco_setup(conn, status);
2827         }
2828
2829         hci_dev_unlock(hdev);
2830 }
2831
2832 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2833 {
2834         struct hci_cp_exit_sniff_mode *cp;
2835         struct hci_conn *conn;
2836
2837         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2838
2839         if (!status)
2840                 return;
2841
2842         cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2843         if (!cp)
2844                 return;
2845
2846         hci_dev_lock(hdev);
2847
2848         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2849         if (conn) {
2850                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2851
2852                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2853                         hci_sco_setup(conn, status);
2854         }
2855
2856         hci_dev_unlock(hdev);
2857 }
2858
2859 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2860 {
2861         struct hci_cp_disconnect *cp;
2862         struct hci_conn_params *params;
2863         struct hci_conn *conn;
2864         bool mgmt_conn;
2865
2866         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2867
2868         /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2869          * otherwise cleanup the connection immediately.
2870          */
2871         if (!status && !hdev->suspended)
2872                 return;
2873
2874         cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2875         if (!cp)
2876                 return;
2877
2878         hci_dev_lock(hdev);
2879
2880         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2881         if (!conn)
2882                 goto unlock;
2883
2884         if (status) {
2885                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2886                                        conn->dst_type, status);
2887
2888                 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2889                         hdev->cur_adv_instance = conn->adv_instance;
2890                         hci_enable_advertising(hdev);
2891                 }
2892
2893                 /* Inform sockets conn is gone before we delete it */
2894                 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED);
2895
2896                 goto done;
2897         }
2898
2899         mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2900
2901         if (conn->type == ACL_LINK) {
2902                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2903                         hci_remove_link_key(hdev, &conn->dst);
2904         }
2905
2906         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2907         if (params) {
2908                 switch (params->auto_connect) {
2909                 case HCI_AUTO_CONN_LINK_LOSS:
2910                         if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2911                                 break;
2912                         fallthrough;
2913
2914                 case HCI_AUTO_CONN_DIRECT:
2915                 case HCI_AUTO_CONN_ALWAYS:
2916                         hci_pend_le_list_del_init(params);
2917                         hci_pend_le_list_add(params, &hdev->pend_le_conns);
2918                         break;
2919
2920                 default:
2921                         break;
2922                 }
2923         }
2924
2925         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2926                                  cp->reason, mgmt_conn);
2927
2928         hci_disconn_cfm(conn, cp->reason);
2929
2930 done:
2931         /* If the disconnection failed for any reason, the upper layer
2932          * does not retry to disconnect in current implementation.
2933          * Hence, we need to do some basic cleanup here and re-enable
2934          * advertising if necessary.
2935          */
2936         hci_conn_del(conn);
2937 unlock:
2938         hci_dev_unlock(hdev);
2939 }
2940
2941 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
2942 {
2943         /* When using controller based address resolution, then the new
2944          * address types 0x02 and 0x03 are used. These types need to be
2945          * converted back into either public address or random address type
2946          */
2947         switch (type) {
2948         case ADDR_LE_DEV_PUBLIC_RESOLVED:
2949                 if (resolved)
2950                         *resolved = true;
2951                 return ADDR_LE_DEV_PUBLIC;
2952         case ADDR_LE_DEV_RANDOM_RESOLVED:
2953                 if (resolved)
2954                         *resolved = true;
2955                 return ADDR_LE_DEV_RANDOM;
2956         }
2957
2958         if (resolved)
2959                 *resolved = false;
2960         return type;
2961 }
2962
2963 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2964                               u8 peer_addr_type, u8 own_address_type,
2965                               u8 filter_policy)
2966 {
2967         struct hci_conn *conn;
2968
2969         conn = hci_conn_hash_lookup_le(hdev, peer_addr,
2970                                        peer_addr_type);
2971         if (!conn)
2972                 return;
2973
2974         own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
2975
2976         /* Store the initiator and responder address information which
2977          * is needed for SMP. These values will not change during the
2978          * lifetime of the connection.
2979          */
2980         conn->init_addr_type = own_address_type;
2981         if (own_address_type == ADDR_LE_DEV_RANDOM)
2982                 bacpy(&conn->init_addr, &hdev->random_addr);
2983         else
2984                 bacpy(&conn->init_addr, &hdev->bdaddr);
2985
2986         conn->resp_addr_type = peer_addr_type;
2987         bacpy(&conn->resp_addr, peer_addr);
2988 }
2989
2990 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2991 {
2992         struct hci_cp_le_create_conn *cp;
2993
2994         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2995
2996         /* All connection failure handling is taken care of by the
2997          * hci_conn_failed function which is triggered by the HCI
2998          * request completion callbacks used for connecting.
2999          */
3000         if (status)
3001                 return;
3002
3003         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
3004         if (!cp)
3005                 return;
3006
3007         hci_dev_lock(hdev);
3008
3009         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
3010                           cp->own_address_type, cp->filter_policy);
3011
3012         hci_dev_unlock(hdev);
3013 }
3014
3015 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
3016 {
3017         struct hci_cp_le_ext_create_conn *cp;
3018
3019         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3020
3021         /* All connection failure handling is taken care of by the
3022          * hci_conn_failed function which is triggered by the HCI
3023          * request completion callbacks used for connecting.
3024          */
3025         if (status)
3026                 return;
3027
3028         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
3029         if (!cp)
3030                 return;
3031
3032         hci_dev_lock(hdev);
3033
3034         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
3035                           cp->own_addr_type, cp->filter_policy);
3036
3037         hci_dev_unlock(hdev);
3038 }
3039
3040 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
3041 {
3042         struct hci_cp_le_read_remote_features *cp;
3043         struct hci_conn *conn;
3044
3045         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3046
3047         if (!status)
3048                 return;
3049
3050         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
3051         if (!cp)
3052                 return;
3053
3054         hci_dev_lock(hdev);
3055
3056         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3057         if (conn) {
3058                 if (conn->state == BT_CONFIG) {
3059                         hci_connect_cfm(conn, status);
3060                         hci_conn_drop(conn);
3061                 }
3062         }
3063
3064         hci_dev_unlock(hdev);
3065 }
3066
3067 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
3068 {
3069         struct hci_cp_le_start_enc *cp;
3070         struct hci_conn *conn;
3071
3072         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3073
3074         if (!status)
3075                 return;
3076
3077         hci_dev_lock(hdev);
3078
3079         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
3080         if (!cp)
3081                 goto unlock;
3082
3083         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3084         if (!conn)
3085                 goto unlock;
3086
3087         if (conn->state != BT_CONNECTED)
3088                 goto unlock;
3089
3090         hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3091         hci_conn_drop(conn);
3092
3093 unlock:
3094         hci_dev_unlock(hdev);
3095 }
3096
3097 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
3098 {
3099         struct hci_cp_switch_role *cp;
3100         struct hci_conn *conn;
3101
3102         BT_DBG("%s status 0x%2.2x", hdev->name, status);
3103
3104         if (!status)
3105                 return;
3106
3107         cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3108         if (!cp)
3109                 return;
3110
3111         hci_dev_lock(hdev);
3112
3113         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3114         if (conn)
3115                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3116
3117         hci_dev_unlock(hdev);
3118 }
3119
3120 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3121                                      struct sk_buff *skb)
3122 {
3123         struct hci_ev_status *ev = data;
3124         struct discovery_state *discov = &hdev->discovery;
3125         struct inquiry_entry *e;
3126
3127         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3128
3129         hci_conn_check_pending(hdev);
3130
3131         if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3132                 return;
3133
3134         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3135         wake_up_bit(&hdev->flags, HCI_INQUIRY);
3136
3137         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3138                 return;
3139
3140         hci_dev_lock(hdev);
3141
3142         if (discov->state != DISCOVERY_FINDING)
3143                 goto unlock;
3144
3145         if (list_empty(&discov->resolve)) {
3146                 /* When BR/EDR inquiry is active and no LE scanning is in
3147                  * progress, then change discovery state to indicate completion.
3148                  *
3149                  * When running LE scanning and BR/EDR inquiry simultaneously
3150                  * and the LE scan already finished, then change the discovery
3151                  * state to indicate completion.
3152                  */
3153                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3154                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3155                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3156                 goto unlock;
3157         }
3158
3159         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3160         if (e && hci_resolve_name(hdev, e) == 0) {
3161                 e->name_state = NAME_PENDING;
3162                 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3163                 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3164         } else {
3165                 /* When BR/EDR inquiry is active and no LE scanning is in
3166                  * progress, then change discovery state to indicate completion.
3167                  *
3168                  * When running LE scanning and BR/EDR inquiry simultaneously
3169                  * and the LE scan already finished, then change the discovery
3170                  * state to indicate completion.
3171                  */
3172                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3173                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3174                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3175         }
3176
3177 unlock:
3178         hci_dev_unlock(hdev);
3179 }
3180
3181 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3182                                    struct sk_buff *skb)
3183 {
3184         struct hci_ev_inquiry_result *ev = edata;
3185         struct inquiry_data data;
3186         int i;
3187
3188         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3189                              flex_array_size(ev, info, ev->num)))
3190                 return;
3191
3192         bt_dev_dbg(hdev, "num %d", ev->num);
3193
3194         if (!ev->num)
3195                 return;
3196
3197         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3198                 return;
3199
3200         hci_dev_lock(hdev);
3201
3202         for (i = 0; i < ev->num; i++) {
3203                 struct inquiry_info *info = &ev->info[i];
3204                 u32 flags;
3205
3206                 bacpy(&data.bdaddr, &info->bdaddr);
3207                 data.pscan_rep_mode     = info->pscan_rep_mode;
3208                 data.pscan_period_mode  = info->pscan_period_mode;
3209                 data.pscan_mode         = info->pscan_mode;
3210                 memcpy(data.dev_class, info->dev_class, 3);
3211                 data.clock_offset       = info->clock_offset;
3212                 data.rssi               = HCI_RSSI_INVALID;
3213                 data.ssp_mode           = 0x00;
3214
3215                 flags = hci_inquiry_cache_update(hdev, &data, false);
3216
3217                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3218                                   info->dev_class, HCI_RSSI_INVALID,
3219                                   flags, NULL, 0, NULL, 0, 0);
3220         }
3221
3222         hci_dev_unlock(hdev);
3223 }
3224
3225 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3226                                   struct sk_buff *skb)
3227 {
3228         struct hci_ev_conn_complete *ev = data;
3229         struct hci_conn *conn;
3230         u8 status = ev->status;
3231
3232         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3233
3234         hci_dev_lock(hdev);
3235
3236         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3237         if (!conn) {
3238                 /* In case of error status and there is no connection pending
3239                  * just unlock as there is nothing to cleanup.
3240                  */
3241                 if (ev->status)
3242                         goto unlock;
3243
3244                 /* Connection may not exist if auto-connected. Check the bredr
3245                  * allowlist to see if this device is allowed to auto connect.
3246                  * If link is an ACL type, create a connection class
3247                  * automatically.
3248                  *
3249                  * Auto-connect will only occur if the event filter is
3250                  * programmed with a given address. Right now, event filter is
3251                  * only used during suspend.
3252                  */
3253                 if (ev->link_type == ACL_LINK &&
3254                     hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3255                                                       &ev->bdaddr,
3256                                                       BDADDR_BREDR)) {
3257                         conn = hci_conn_add_unset(hdev, ev->link_type,
3258                                                   &ev->bdaddr, HCI_ROLE_SLAVE);
3259                         if (!conn) {
3260                                 bt_dev_err(hdev, "no memory for new conn");
3261                                 goto unlock;
3262                         }
3263                 } else {
3264                         if (ev->link_type != SCO_LINK)
3265                                 goto unlock;
3266
3267                         conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3268                                                        &ev->bdaddr);
3269                         if (!conn)
3270                                 goto unlock;
3271
3272                         conn->type = SCO_LINK;
3273                 }
3274         }
3275
3276         /* The HCI_Connection_Complete event is only sent once per connection.
3277          * Processing it more than once per connection can corrupt kernel memory.
3278          *
3279          * As the connection handle is set here for the first time, it indicates
3280          * whether the connection is already set up.
3281          */
3282         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
3283                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3284                 goto unlock;
3285         }
3286
3287         if (!status) {
3288                 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
3289                 if (status)
3290                         goto done;
3291
3292                 if (conn->type == ACL_LINK) {
3293                         conn->state = BT_CONFIG;
3294                         hci_conn_hold(conn);
3295
3296                         if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3297                             !hci_find_link_key(hdev, &ev->bdaddr))
3298                                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3299                         else
3300                                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3301                 } else
3302                         conn->state = BT_CONNECTED;
3303
3304                 hci_debugfs_create_conn(conn);
3305                 hci_conn_add_sysfs(conn);
3306
3307                 if (test_bit(HCI_AUTH, &hdev->flags))
3308                         set_bit(HCI_CONN_AUTH, &conn->flags);
3309
3310                 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3311                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3312
3313                 /* Get remote features */
3314                 if (conn->type == ACL_LINK) {
3315                         struct hci_cp_read_remote_features cp;
3316                         cp.handle = ev->handle;
3317                         hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3318                                      sizeof(cp), &cp);
3319
3320                         hci_update_scan(hdev);
3321                 }
3322
3323                 /* Set packet type for incoming connection */
3324                 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3325                         struct hci_cp_change_conn_ptype cp;
3326                         cp.handle = ev->handle;
3327                         cp.pkt_type = cpu_to_le16(conn->pkt_type);
3328                         hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3329                                      &cp);
3330                 }
3331         }
3332
3333         if (conn->type == ACL_LINK)
3334                 hci_sco_setup(conn, ev->status);
3335
3336 done:
3337         if (status) {
3338                 hci_conn_failed(conn, status);
3339         } else if (ev->link_type == SCO_LINK) {
3340                 switch (conn->setting & SCO_AIRMODE_MASK) {
3341                 case SCO_AIRMODE_CVSD:
3342                         if (hdev->notify)
3343                                 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3344                         break;
3345                 }
3346
3347                 hci_connect_cfm(conn, status);
3348         }
3349
3350 unlock:
3351         hci_dev_unlock(hdev);
3352
3353         hci_conn_check_pending(hdev);
3354 }
3355
3356 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3357 {
3358         struct hci_cp_reject_conn_req cp;
3359
3360         bacpy(&cp.bdaddr, bdaddr);
3361         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3362         hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3363 }
3364
3365 static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3366                                  struct sk_buff *skb)
3367 {
3368         struct hci_ev_conn_request *ev = data;
3369         int mask = hdev->link_mode;
3370         struct inquiry_entry *ie;
3371         struct hci_conn *conn;
3372         __u8 flags = 0;
3373
3374         bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3375
3376         /* Reject incoming connection from device with same BD ADDR against
3377          * CVE-2020-26555
3378          */
3379         if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) {
3380                 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n",
3381                            &ev->bdaddr);
3382                 hci_reject_conn(hdev, &ev->bdaddr);
3383                 return;
3384         }
3385
3386         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3387                                       &flags);
3388
3389         if (!(mask & HCI_LM_ACCEPT)) {
3390                 hci_reject_conn(hdev, &ev->bdaddr);
3391                 return;
3392         }
3393
3394         hci_dev_lock(hdev);
3395
3396         if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3397                                    BDADDR_BREDR)) {
3398                 hci_reject_conn(hdev, &ev->bdaddr);
3399                 goto unlock;
3400         }
3401
3402         /* Require HCI_CONNECTABLE or an accept list entry to accept the
3403          * connection. These features are only touched through mgmt so
3404          * only do the checks if HCI_MGMT is set.
3405          */
3406         if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3407             !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3408             !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3409                                                BDADDR_BREDR)) {
3410                 hci_reject_conn(hdev, &ev->bdaddr);
3411                 goto unlock;
3412         }
3413
3414         /* Connection accepted */
3415
3416         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3417         if (ie)
3418                 memcpy(ie->data.dev_class, ev->dev_class, 3);
3419
3420         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3421                         &ev->bdaddr);
3422         if (!conn) {
3423                 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr,
3424                                           HCI_ROLE_SLAVE);
3425                 if (!conn) {
3426                         bt_dev_err(hdev, "no memory for new connection");
3427                         goto unlock;
3428                 }
3429         }
3430
3431         memcpy(conn->dev_class, ev->dev_class, 3);
3432
3433         hci_dev_unlock(hdev);
3434
3435         if (ev->link_type == ACL_LINK ||
3436             (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3437                 struct hci_cp_accept_conn_req cp;
3438                 conn->state = BT_CONNECT;
3439
3440                 bacpy(&cp.bdaddr, &ev->bdaddr);
3441
3442                 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3443                         cp.role = 0x00; /* Become central */
3444                 else
3445                         cp.role = 0x01; /* Remain peripheral */
3446
3447                 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3448         } else if (!(flags & HCI_PROTO_DEFER)) {
3449                 struct hci_cp_accept_sync_conn_req cp;
3450                 conn->state = BT_CONNECT;
3451
3452                 bacpy(&cp.bdaddr, &ev->bdaddr);
3453                 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3454
3455                 cp.tx_bandwidth   = cpu_to_le32(0x00001f40);
3456                 cp.rx_bandwidth   = cpu_to_le32(0x00001f40);
3457                 cp.max_latency    = cpu_to_le16(0xffff);
3458                 cp.content_format = cpu_to_le16(hdev->voice_setting);
3459                 cp.retrans_effort = 0xff;
3460
3461                 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3462                              &cp);
3463         } else {
3464                 conn->state = BT_CONNECT2;
3465                 hci_connect_cfm(conn, 0);
3466         }
3467
3468         return;
3469 unlock:
3470         hci_dev_unlock(hdev);
3471 }
3472
3473 static u8 hci_to_mgmt_reason(u8 err)
3474 {
3475         switch (err) {
3476         case HCI_ERROR_CONNECTION_TIMEOUT:
3477                 return MGMT_DEV_DISCONN_TIMEOUT;
3478         case HCI_ERROR_REMOTE_USER_TERM:
3479         case HCI_ERROR_REMOTE_LOW_RESOURCES:
3480         case HCI_ERROR_REMOTE_POWER_OFF:
3481                 return MGMT_DEV_DISCONN_REMOTE;
3482         case HCI_ERROR_LOCAL_HOST_TERM:
3483                 return MGMT_DEV_DISCONN_LOCAL_HOST;
3484         default:
3485                 return MGMT_DEV_DISCONN_UNKNOWN;
3486         }
3487 }
3488
3489 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3490                                      struct sk_buff *skb)
3491 {
3492         struct hci_ev_disconn_complete *ev = data;
3493         u8 reason;
3494         struct hci_conn_params *params;
3495         struct hci_conn *conn;
3496         bool mgmt_connected;
3497
3498         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3499
3500         hci_dev_lock(hdev);
3501
3502         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3503         if (!conn)
3504                 goto unlock;
3505
3506         if (ev->status) {
3507                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3508                                        conn->dst_type, ev->status);
3509                 goto unlock;
3510         }
3511
3512         conn->state = BT_CLOSED;
3513
3514         mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3515
3516         if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3517                 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3518         else
3519                 reason = hci_to_mgmt_reason(ev->reason);
3520
3521         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3522                                 reason, mgmt_connected);
3523
3524         if (conn->type == ACL_LINK) {
3525                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3526                         hci_remove_link_key(hdev, &conn->dst);
3527
3528                 hci_update_scan(hdev);
3529         }
3530
3531         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3532         if (params) {
3533                 switch (params->auto_connect) {
3534                 case HCI_AUTO_CONN_LINK_LOSS:
3535                         if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3536                                 break;
3537                         fallthrough;
3538
3539                 case HCI_AUTO_CONN_DIRECT:
3540                 case HCI_AUTO_CONN_ALWAYS:
3541                         hci_pend_le_list_del_init(params);
3542                         hci_pend_le_list_add(params, &hdev->pend_le_conns);
3543                         hci_update_passive_scan(hdev);
3544                         break;
3545
3546                 default:
3547                         break;
3548                 }
3549         }
3550
3551         hci_disconn_cfm(conn, ev->reason);
3552
3553         /* Re-enable advertising if necessary, since it might
3554          * have been disabled by the connection. From the
3555          * HCI_LE_Set_Advertise_Enable command description in
3556          * the core specification (v4.0):
3557          * "The Controller shall continue advertising until the Host
3558          * issues an LE_Set_Advertise_Enable command with
3559          * Advertising_Enable set to 0x00 (Advertising is disabled)
3560          * or until a connection is created or until the Advertising
3561          * is timed out due to Directed Advertising."
3562          */
3563         if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3564                 hdev->cur_adv_instance = conn->adv_instance;
3565                 hci_enable_advertising(hdev);
3566         }
3567
3568         hci_conn_del(conn);
3569
3570 unlock:
3571         hci_dev_unlock(hdev);
3572 }
3573
3574 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3575                                   struct sk_buff *skb)
3576 {
3577         struct hci_ev_auth_complete *ev = data;
3578         struct hci_conn *conn;
3579
3580         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3581
3582         hci_dev_lock(hdev);
3583
3584         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3585         if (!conn)
3586                 goto unlock;
3587
3588         if (!ev->status) {
3589                 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3590                 set_bit(HCI_CONN_AUTH, &conn->flags);
3591                 conn->sec_level = conn->pending_sec_level;
3592         } else {
3593                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3594                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3595
3596                 mgmt_auth_failed(conn, ev->status);
3597         }
3598
3599         clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3600
3601         if (conn->state == BT_CONFIG) {
3602                 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3603                         struct hci_cp_set_conn_encrypt cp;
3604                         cp.handle  = ev->handle;
3605                         cp.encrypt = 0x01;
3606                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3607                                      &cp);
3608                 } else {
3609                         conn->state = BT_CONNECTED;
3610                         hci_connect_cfm(conn, ev->status);
3611                         hci_conn_drop(conn);
3612                 }
3613         } else {
3614                 hci_auth_cfm(conn, ev->status);
3615
3616                 hci_conn_hold(conn);
3617                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3618                 hci_conn_drop(conn);
3619         }
3620
3621         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3622                 if (!ev->status) {
3623                         struct hci_cp_set_conn_encrypt cp;
3624                         cp.handle  = ev->handle;
3625                         cp.encrypt = 0x01;
3626                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3627                                      &cp);
3628                 } else {
3629                         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3630                         hci_encrypt_cfm(conn, ev->status);
3631                 }
3632         }
3633
3634 unlock:
3635         hci_dev_unlock(hdev);
3636 }
3637
3638 static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3639                                 struct sk_buff *skb)
3640 {
3641         struct hci_ev_remote_name *ev = data;
3642         struct hci_conn *conn;
3643
3644         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3645
3646         hci_conn_check_pending(hdev);
3647
3648         hci_dev_lock(hdev);
3649
3650         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3651
3652         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3653                 goto check_auth;
3654
3655         if (ev->status == 0)
3656                 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3657                                        strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3658         else
3659                 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3660
3661 check_auth:
3662         if (!conn)
3663                 goto unlock;
3664
3665         if (!hci_outgoing_auth_needed(hdev, conn))
3666                 goto unlock;
3667
3668         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3669                 struct hci_cp_auth_requested cp;
3670
3671                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3672
3673                 cp.handle = __cpu_to_le16(conn->handle);
3674                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3675         }
3676
3677 unlock:
3678         hci_dev_unlock(hdev);
3679 }
3680
3681 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3682                                    struct sk_buff *skb)
3683 {
3684         struct hci_ev_encrypt_change *ev = data;
3685         struct hci_conn *conn;
3686
3687         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3688
3689         hci_dev_lock(hdev);
3690
3691         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3692         if (!conn)
3693                 goto unlock;
3694
3695         if (!ev->status) {
3696                 if (ev->encrypt) {
3697                         /* Encryption implies authentication */
3698                         set_bit(HCI_CONN_AUTH, &conn->flags);
3699                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3700                         conn->sec_level = conn->pending_sec_level;
3701
3702                         /* P-256 authentication key implies FIPS */
3703                         if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3704                                 set_bit(HCI_CONN_FIPS, &conn->flags);
3705
3706                         if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3707                             conn->type == LE_LINK)
3708                                 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3709                 } else {
3710                         clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3711                         clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3712                 }
3713         }
3714
3715         /* We should disregard the current RPA and generate a new one
3716          * whenever the encryption procedure fails.
3717          */
3718         if (ev->status && conn->type == LE_LINK) {
3719                 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3720                 hci_adv_instances_set_rpa_expired(hdev, true);
3721         }
3722
3723         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3724
3725         /* Check link security requirements are met */
3726         if (!hci_conn_check_link_mode(conn))
3727                 ev->status = HCI_ERROR_AUTH_FAILURE;
3728
3729         if (ev->status && conn->state == BT_CONNECTED) {
3730                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3731                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3732
3733                 /* Notify upper layers so they can cleanup before
3734                  * disconnecting.
3735                  */
3736                 hci_encrypt_cfm(conn, ev->status);
3737                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3738                 hci_conn_drop(conn);
3739                 goto unlock;
3740         }
3741
3742         /* Try reading the encryption key size for encrypted ACL links */
3743         if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3744                 struct hci_cp_read_enc_key_size cp;
3745
3746                 /* Only send HCI_Read_Encryption_Key_Size if the
3747                  * controller really supports it. If it doesn't, assume
3748                  * the default size (16).
3749                  */
3750                 if (!(hdev->commands[20] & 0x10)) {
3751                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3752                         goto notify;
3753                 }
3754
3755                 cp.handle = cpu_to_le16(conn->handle);
3756                 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3757                                  sizeof(cp), &cp)) {
3758                         bt_dev_err(hdev, "sending read key size failed");
3759                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3760                         goto notify;
3761                 }
3762
3763                 goto unlock;
3764         }
3765
3766         /* Set the default Authenticated Payload Timeout after
3767          * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3768          * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3769          * sent when the link is active and Encryption is enabled, the conn
3770          * type can be either LE or ACL and controller must support LMP Ping.
3771          * Ensure for AES-CCM encryption as well.
3772          */
3773         if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3774             test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3775             ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3776              (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3777                 struct hci_cp_write_auth_payload_to cp;
3778
3779                 cp.handle = cpu_to_le16(conn->handle);
3780                 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3781                 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3782                                  sizeof(cp), &cp))
3783                         bt_dev_err(hdev, "write auth payload timeout failed");
3784         }
3785
3786 notify:
3787         hci_encrypt_cfm(conn, ev->status);
3788
3789 unlock:
3790         hci_dev_unlock(hdev);
3791 }
3792
3793 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3794                                              struct sk_buff *skb)
3795 {
3796         struct hci_ev_change_link_key_complete *ev = data;
3797         struct hci_conn *conn;
3798
3799         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3800
3801         hci_dev_lock(hdev);
3802
3803         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3804         if (conn) {
3805                 if (!ev->status)
3806                         set_bit(HCI_CONN_SECURE, &conn->flags);
3807
3808                 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3809
3810                 hci_key_change_cfm(conn, ev->status);
3811         }
3812
3813         hci_dev_unlock(hdev);
3814 }
3815
3816 static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3817                                     struct sk_buff *skb)
3818 {
3819         struct hci_ev_remote_features *ev = data;
3820         struct hci_conn *conn;
3821
3822         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3823
3824         hci_dev_lock(hdev);
3825
3826         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3827         if (!conn)
3828                 goto unlock;
3829
3830         if (!ev->status)
3831                 memcpy(conn->features[0], ev->features, 8);
3832
3833         if (conn->state != BT_CONFIG)
3834                 goto unlock;
3835
3836         if (!ev->status && lmp_ext_feat_capable(hdev) &&
3837             lmp_ext_feat_capable(conn)) {
3838                 struct hci_cp_read_remote_ext_features cp;
3839                 cp.handle = ev->handle;
3840                 cp.page = 0x01;
3841                 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3842                              sizeof(cp), &cp);
3843                 goto unlock;
3844         }
3845
3846         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3847                 struct hci_cp_remote_name_req cp;
3848                 memset(&cp, 0, sizeof(cp));
3849                 bacpy(&cp.bdaddr, &conn->dst);
3850                 cp.pscan_rep_mode = 0x02;
3851                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3852         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3853                 mgmt_device_connected(hdev, conn, NULL, 0);
3854
3855         if (!hci_outgoing_auth_needed(hdev, conn)) {
3856                 conn->state = BT_CONNECTED;
3857                 hci_connect_cfm(conn, ev->status);
3858                 hci_conn_drop(conn);
3859         }
3860
3861 unlock:
3862         hci_dev_unlock(hdev);
3863 }
3864
3865 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3866 {
3867         cancel_delayed_work(&hdev->cmd_timer);
3868
3869         rcu_read_lock();
3870         if (!test_bit(HCI_RESET, &hdev->flags)) {
3871                 if (ncmd) {
3872                         cancel_delayed_work(&hdev->ncmd_timer);
3873                         atomic_set(&hdev->cmd_cnt, 1);
3874                 } else {
3875                         if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3876                                 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3877                                                    HCI_NCMD_TIMEOUT);
3878                 }
3879         }
3880         rcu_read_unlock();
3881 }
3882
3883 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3884                                         struct sk_buff *skb)
3885 {
3886         struct hci_rp_le_read_buffer_size_v2 *rp = data;
3887
3888         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3889
3890         if (rp->status)
3891                 return rp->status;
3892
3893         hdev->le_mtu   = __le16_to_cpu(rp->acl_mtu);
3894         hdev->le_pkts  = rp->acl_max_pkt;
3895         hdev->iso_mtu  = __le16_to_cpu(rp->iso_mtu);
3896         hdev->iso_pkts = rp->iso_max_pkt;
3897
3898         hdev->le_cnt  = hdev->le_pkts;
3899         hdev->iso_cnt = hdev->iso_pkts;
3900
3901         BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3902                hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3903
3904         return rp->status;
3905 }
3906
3907 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status)
3908 {
3909         struct hci_conn *conn, *tmp;
3910
3911         lockdep_assert_held(&hdev->lock);
3912
3913         list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
3914                 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) ||
3915                     conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig)
3916                         continue;
3917
3918                 if (HCI_CONN_HANDLE_UNSET(conn->handle))
3919                         hci_conn_failed(conn, status);
3920         }
3921 }
3922
3923 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3924                                    struct sk_buff *skb)
3925 {
3926         struct hci_rp_le_set_cig_params *rp = data;
3927         struct hci_cp_le_set_cig_params *cp;
3928         struct hci_conn *conn;
3929         u8 status = rp->status;
3930         bool pending = false;
3931         int i;
3932
3933         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3934
3935         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS);
3936         if (!rp->status && (!cp || rp->num_handles != cp->num_cis ||
3937                             rp->cig_id != cp->cig_id)) {
3938                 bt_dev_err(hdev, "unexpected Set CIG Parameters response data");
3939                 status = HCI_ERROR_UNSPECIFIED;
3940         }
3941
3942         hci_dev_lock(hdev);
3943
3944         /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554
3945          *
3946          * If the Status return parameter is non-zero, then the state of the CIG
3947          * and its CIS configurations shall not be changed by the command. If
3948          * the CIG did not already exist, it shall not be created.
3949          */
3950         if (status) {
3951                 /* Keep current configuration, fail only the unbound CIS */
3952                 hci_unbound_cis_failed(hdev, rp->cig_id, status);
3953                 goto unlock;
3954         }
3955
3956         /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553
3957          *
3958          * If the Status return parameter is zero, then the Controller shall
3959          * set the Connection_Handle arrayed return parameter to the connection
3960          * handle(s) corresponding to the CIS configurations specified in
3961          * the CIS_IDs command parameter, in the same order.
3962          */
3963         for (i = 0; i < rp->num_handles; ++i) {
3964                 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id,
3965                                                 cp->cis[i].cis_id);
3966                 if (!conn || !bacmp(&conn->dst, BDADDR_ANY))
3967                         continue;
3968
3969                 if (conn->state != BT_BOUND && conn->state != BT_CONNECT)
3970                         continue;
3971
3972                 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i])))
3973                         continue;
3974
3975                 if (conn->state == BT_CONNECT)
3976                         pending = true;
3977         }
3978
3979 unlock:
3980         if (pending)
3981                 hci_le_create_cis_pending(hdev);
3982
3983         hci_dev_unlock(hdev);
3984
3985         return rp->status;
3986 }
3987
3988 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3989                                    struct sk_buff *skb)
3990 {
3991         struct hci_rp_le_setup_iso_path *rp = data;
3992         struct hci_cp_le_setup_iso_path *cp;
3993         struct hci_conn *conn;
3994
3995         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3996
3997         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3998         if (!cp)
3999                 return rp->status;
4000
4001         hci_dev_lock(hdev);
4002
4003         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
4004         if (!conn)
4005                 goto unlock;
4006
4007         if (rp->status) {
4008                 hci_connect_cfm(conn, rp->status);
4009                 hci_conn_del(conn);
4010                 goto unlock;
4011         }
4012
4013         switch (cp->direction) {
4014         /* Input (Host to Controller) */
4015         case 0x00:
4016                 /* Only confirm connection if output only */
4017                 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu)
4018                         hci_connect_cfm(conn, rp->status);
4019                 break;
4020         /* Output (Controller to Host) */
4021         case 0x01:
4022                 /* Confirm connection since conn->iso_qos is always configured
4023                  * last.
4024                  */
4025                 hci_connect_cfm(conn, rp->status);
4026                 break;
4027         }
4028
4029 unlock:
4030         hci_dev_unlock(hdev);
4031         return rp->status;
4032 }
4033
4034 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
4035 {
4036         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4037 }
4038
4039 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
4040                                    struct sk_buff *skb)
4041 {
4042         struct hci_ev_status *rp = data;
4043         struct hci_cp_le_set_per_adv_params *cp;
4044
4045         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4046
4047         if (rp->status)
4048                 return rp->status;
4049
4050         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
4051         if (!cp)
4052                 return rp->status;
4053
4054         /* TODO: set the conn state */
4055         return rp->status;
4056 }
4057
4058 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
4059                                        struct sk_buff *skb)
4060 {
4061         struct hci_ev_status *rp = data;
4062         struct hci_cp_le_set_per_adv_enable *cp;
4063         struct adv_info *adv = NULL, *n;
4064         u8 per_adv_cnt = 0;
4065
4066         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4067
4068         if (rp->status)
4069                 return rp->status;
4070
4071         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
4072         if (!cp)
4073                 return rp->status;
4074
4075         hci_dev_lock(hdev);
4076
4077         adv = hci_find_adv_instance(hdev, cp->handle);
4078
4079         if (cp->enable) {
4080                 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
4081
4082                 if (adv)
4083                         adv->enabled = true;
4084         } else {
4085                 /* If just one instance was disabled check if there are
4086                  * any other instance enabled before clearing HCI_LE_PER_ADV.
4087                  * The current periodic adv instance will be marked as
4088                  * disabled once extended advertising is also disabled.
4089                  */
4090                 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
4091                                          list) {
4092                         if (adv->periodic && adv->enabled)
4093                                 per_adv_cnt++;
4094                 }
4095
4096                 if (per_adv_cnt > 1)
4097                         goto unlock;
4098
4099                 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
4100         }
4101
4102 unlock:
4103         hci_dev_unlock(hdev);
4104
4105         return rp->status;
4106 }
4107
4108 #define HCI_CC_VL(_op, _func, _min, _max) \
4109 { \
4110         .op = _op, \
4111         .func = _func, \
4112         .min_len = _min, \
4113         .max_len = _max, \
4114 }
4115
4116 #define HCI_CC(_op, _func, _len) \
4117         HCI_CC_VL(_op, _func, _len, _len)
4118
4119 #define HCI_CC_STATUS(_op, _func) \
4120         HCI_CC(_op, _func, sizeof(struct hci_ev_status))
4121
4122 static const struct hci_cc {
4123         u16  op;
4124         u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4125         u16  min_len;
4126         u16  max_len;
4127 } hci_cc_table[] = {
4128         HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4129         HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4130         HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4131         HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4132                       hci_cc_remote_name_req_cancel),
4133         HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4134                sizeof(struct hci_rp_role_discovery)),
4135         HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4136                sizeof(struct hci_rp_read_link_policy)),
4137         HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4138                sizeof(struct hci_rp_write_link_policy)),
4139         HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4140                sizeof(struct hci_rp_read_def_link_policy)),
4141         HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4142                       hci_cc_write_def_link_policy),
4143         HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4144         HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4145                sizeof(struct hci_rp_read_stored_link_key)),
4146         HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4147                sizeof(struct hci_rp_delete_stored_link_key)),
4148         HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4149         HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4150                sizeof(struct hci_rp_read_local_name)),
4151         HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4152         HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4153         HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4154         HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4155         HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4156                sizeof(struct hci_rp_read_class_of_dev)),
4157         HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4158         HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4159                sizeof(struct hci_rp_read_voice_setting)),
4160         HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4161         HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4162                sizeof(struct hci_rp_read_num_supported_iac)),
4163         HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4164         HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4165         HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4166                sizeof(struct hci_rp_read_auth_payload_to)),
4167         HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4168                sizeof(struct hci_rp_write_auth_payload_to)),
4169         HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4170                sizeof(struct hci_rp_read_local_version)),
4171         HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4172                sizeof(struct hci_rp_read_local_commands)),
4173         HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4174                sizeof(struct hci_rp_read_local_features)),
4175         HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4176                sizeof(struct hci_rp_read_local_ext_features)),
4177         HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4178                sizeof(struct hci_rp_read_buffer_size)),
4179         HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4180                sizeof(struct hci_rp_read_bd_addr)),
4181         HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4182                sizeof(struct hci_rp_read_local_pairing_opts)),
4183         HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4184                sizeof(struct hci_rp_read_page_scan_activity)),
4185         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4186                       hci_cc_write_page_scan_activity),
4187         HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4188                sizeof(struct hci_rp_read_page_scan_type)),
4189         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4190         HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4191                sizeof(struct hci_rp_read_data_block_size)),
4192         HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4193                sizeof(struct hci_rp_read_flow_control_mode)),
4194         HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4195                sizeof(struct hci_rp_read_local_amp_info)),
4196         HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4197                sizeof(struct hci_rp_read_clock)),
4198         HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4199                sizeof(struct hci_rp_read_enc_key_size)),
4200         HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4201                sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4202         HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4203                hci_cc_read_def_err_data_reporting,
4204                sizeof(struct hci_rp_read_def_err_data_reporting)),
4205         HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4206                       hci_cc_write_def_err_data_reporting),
4207         HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4208                sizeof(struct hci_rp_pin_code_reply)),
4209         HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4210                sizeof(struct hci_rp_pin_code_neg_reply)),
4211         HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4212                sizeof(struct hci_rp_read_local_oob_data)),
4213         HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4214                sizeof(struct hci_rp_read_local_oob_ext_data)),
4215         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4216                sizeof(struct hci_rp_le_read_buffer_size)),
4217         HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4218                sizeof(struct hci_rp_le_read_local_features)),
4219         HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4220                sizeof(struct hci_rp_le_read_adv_tx_power)),
4221         HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4222                sizeof(struct hci_rp_user_confirm_reply)),
4223         HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4224                sizeof(struct hci_rp_user_confirm_reply)),
4225         HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4226                sizeof(struct hci_rp_user_confirm_reply)),
4227         HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4228                sizeof(struct hci_rp_user_confirm_reply)),
4229         HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4230         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4231         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4232         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4233         HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4234                hci_cc_le_read_accept_list_size,
4235                sizeof(struct hci_rp_le_read_accept_list_size)),
4236         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4237         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4238                       hci_cc_le_add_to_accept_list),
4239         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4240                       hci_cc_le_del_from_accept_list),
4241         HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4242                sizeof(struct hci_rp_le_read_supported_states)),
4243         HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4244                sizeof(struct hci_rp_le_read_def_data_len)),
4245         HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4246                       hci_cc_le_write_def_data_len),
4247         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4248                       hci_cc_le_add_to_resolv_list),
4249         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4250                       hci_cc_le_del_from_resolv_list),
4251         HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4252                       hci_cc_le_clear_resolv_list),
4253         HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4254                sizeof(struct hci_rp_le_read_resolv_list_size)),
4255         HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4256                       hci_cc_le_set_addr_resolution_enable),
4257         HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4258                sizeof(struct hci_rp_le_read_max_data_len)),
4259         HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4260                       hci_cc_write_le_host_supported),
4261         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4262         HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4263                sizeof(struct hci_rp_read_rssi)),
4264         HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4265                sizeof(struct hci_rp_read_tx_power)),
4266         HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4267         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4268                       hci_cc_le_set_ext_scan_param),
4269         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4270                       hci_cc_le_set_ext_scan_enable),
4271         HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4272         HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4273                hci_cc_le_read_num_adv_sets,
4274                sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4275         HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4276                sizeof(struct hci_rp_le_set_ext_adv_params)),
4277         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4278                       hci_cc_le_set_ext_adv_enable),
4279         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4280                       hci_cc_le_set_adv_set_random_addr),
4281         HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4282         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4283         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4284         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4285                       hci_cc_le_set_per_adv_enable),
4286         HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4287                sizeof(struct hci_rp_le_read_transmit_power)),
4288 #ifdef TIZEN_BT
4289         HCI_CC(HCI_OP_ENABLE_RSSI, hci_cc_enable_rssi,
4290                sizeof(struct hci_cc_rsp_enable_rssi)),
4291         HCI_CC(HCI_OP_GET_RAW_RSSI, hci_cc_get_raw_rssi,
4292                sizeof(struct hci_cc_rp_get_raw_rssi)),
4293 #endif
4294         HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4295         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4296                sizeof(struct hci_rp_le_read_buffer_size_v2)),
4297         HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4298                   sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4299         HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4300                sizeof(struct hci_rp_le_setup_iso_path)),
4301 };
4302
4303 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4304                       struct sk_buff *skb)
4305 {
4306         void *data;
4307
4308         if (skb->len < cc->min_len) {
4309                 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4310                            cc->op, skb->len, cc->min_len);
4311                 return HCI_ERROR_UNSPECIFIED;
4312         }
4313
4314         /* Just warn if the length is over max_len size it still be possible to
4315          * partially parse the cc so leave to callback to decide if that is
4316          * acceptable.
4317          */
4318         if (skb->len > cc->max_len)
4319                 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4320                             cc->op, skb->len, cc->max_len);
4321
4322         data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4323         if (!data)
4324                 return HCI_ERROR_UNSPECIFIED;
4325
4326         return cc->func(hdev, data, skb);
4327 }
4328
4329 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4330                                  struct sk_buff *skb, u16 *opcode, u8 *status,
4331                                  hci_req_complete_t *req_complete,
4332                                  hci_req_complete_skb_t *req_complete_skb)
4333 {
4334         struct hci_ev_cmd_complete *ev = data;
4335         int i;
4336
4337         *opcode = __le16_to_cpu(ev->opcode);
4338
4339         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4340
4341         for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4342                 if (hci_cc_table[i].op == *opcode) {
4343                         *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4344                         break;
4345                 }
4346         }
4347
4348         if (i == ARRAY_SIZE(hci_cc_table)) {
4349                 /* Unknown opcode, assume byte 0 contains the status, so
4350                  * that e.g. __hci_cmd_sync() properly returns errors
4351                  * for vendor specific commands send by HCI drivers.
4352                  * If a vendor doesn't actually follow this convention we may
4353                  * need to introduce a vendor CC table in order to properly set
4354                  * the status.
4355                  */
4356                 *status = skb->data[0];
4357         }
4358
4359         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4360
4361         hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4362                              req_complete_skb);
4363
4364         if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4365                 bt_dev_err(hdev,
4366                            "unexpected event for opcode 0x%4.4x", *opcode);
4367                 return;
4368         }
4369
4370         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4371                 queue_work(hdev->workqueue, &hdev->cmd_work);
4372 }
4373
4374 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4375 {
4376         struct hci_cp_le_create_cis *cp;
4377         bool pending = false;
4378         int i;
4379
4380         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4381
4382         if (!status)
4383                 return;
4384
4385         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4386         if (!cp)
4387                 return;
4388
4389         hci_dev_lock(hdev);
4390
4391         /* Remove connection if command failed */
4392         for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4393                 struct hci_conn *conn;
4394                 u16 handle;
4395
4396                 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4397
4398                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4399                 if (conn) {
4400                         if (test_and_clear_bit(HCI_CONN_CREATE_CIS,
4401                                                &conn->flags))
4402                                 pending = true;
4403                         conn->state = BT_CLOSED;
4404                         hci_connect_cfm(conn, status);
4405                         hci_conn_del(conn);
4406                 }
4407         }
4408
4409         if (pending)
4410                 hci_le_create_cis_pending(hdev);
4411
4412         hci_dev_unlock(hdev);
4413 }
4414
4415 #define HCI_CS(_op, _func) \
4416 { \
4417         .op = _op, \
4418         .func = _func, \
4419 }
4420
4421 static const struct hci_cs {
4422         u16  op;
4423         void (*func)(struct hci_dev *hdev, __u8 status);
4424 } hci_cs_table[] = {
4425         HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4426         HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4427         HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4428         HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4429         HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4430         HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4431         HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4432         HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4433         HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4434                hci_cs_read_remote_ext_features),
4435         HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4436         HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4437                hci_cs_enhanced_setup_sync_conn),
4438         HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4439         HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4440         HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4441         HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4442         HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4443         HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4444         HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4445         HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4446         HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4447 };
4448
4449 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4450                                struct sk_buff *skb, u16 *opcode, u8 *status,
4451                                hci_req_complete_t *req_complete,
4452                                hci_req_complete_skb_t *req_complete_skb)
4453 {
4454         struct hci_ev_cmd_status *ev = data;
4455         int i;
4456
4457         *opcode = __le16_to_cpu(ev->opcode);
4458         *status = ev->status;
4459
4460         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4461
4462         for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4463                 if (hci_cs_table[i].op == *opcode) {
4464                         hci_cs_table[i].func(hdev, ev->status);
4465                         break;
4466                 }
4467         }
4468
4469         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4470
4471         /* Indicate request completion if the command failed. Also, if
4472          * we're not waiting for a special event and we get a success
4473          * command status we should try to flag the request as completed
4474          * (since for this kind of commands there will not be a command
4475          * complete event).
4476          */
4477         if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4478                 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4479                                      req_complete_skb);
4480                 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4481                         bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4482                                    *opcode);
4483                         return;
4484                 }
4485         }
4486
4487         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4488                 queue_work(hdev->workqueue, &hdev->cmd_work);
4489 }
4490
4491 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4492                                    struct sk_buff *skb)
4493 {
4494         struct hci_ev_hardware_error *ev = data;
4495
4496         bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4497
4498 #ifdef TIZEN_BT
4499         hci_dev_lock(hdev);
4500         mgmt_hardware_error(hdev, ev->code);
4501         hci_dev_unlock(hdev);
4502 #endif
4503         hdev->hw_error_code = ev->code;
4504
4505         queue_work(hdev->req_workqueue, &hdev->error_reset);
4506 }
4507
4508 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4509                                 struct sk_buff *skb)
4510 {
4511         struct hci_ev_role_change *ev = data;
4512         struct hci_conn *conn;
4513
4514         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4515
4516         hci_dev_lock(hdev);
4517
4518         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4519         if (conn) {
4520                 if (!ev->status)
4521                         conn->role = ev->role;
4522
4523                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4524
4525                 hci_role_switch_cfm(conn, ev->status, ev->role);
4526         }
4527
4528         hci_dev_unlock(hdev);
4529 }
4530
4531 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4532                                   struct sk_buff *skb)
4533 {
4534         struct hci_ev_num_comp_pkts *ev = data;
4535         int i;
4536
4537         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4538                              flex_array_size(ev, handles, ev->num)))
4539                 return;
4540
4541         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4542                 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4543                 return;
4544         }
4545
4546         bt_dev_dbg(hdev, "num %d", ev->num);
4547
4548         for (i = 0; i < ev->num; i++) {
4549                 struct hci_comp_pkts_info *info = &ev->handles[i];
4550                 struct hci_conn *conn;
4551                 __u16  handle, count;
4552
4553                 handle = __le16_to_cpu(info->handle);
4554                 count  = __le16_to_cpu(info->count);
4555
4556                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4557                 if (!conn)
4558                         continue;
4559
4560                 conn->sent -= count;
4561
4562                 switch (conn->type) {
4563                 case ACL_LINK:
4564                         hdev->acl_cnt += count;
4565                         if (hdev->acl_cnt > hdev->acl_pkts)
4566                                 hdev->acl_cnt = hdev->acl_pkts;
4567                         break;
4568
4569                 case LE_LINK:
4570                         if (hdev->le_pkts) {
4571                                 hdev->le_cnt += count;
4572                                 if (hdev->le_cnt > hdev->le_pkts)
4573                                         hdev->le_cnt = hdev->le_pkts;
4574                         } else {
4575                                 hdev->acl_cnt += count;
4576                                 if (hdev->acl_cnt > hdev->acl_pkts)
4577                                         hdev->acl_cnt = hdev->acl_pkts;
4578                         }
4579                         break;
4580
4581                 case SCO_LINK:
4582                         hdev->sco_cnt += count;
4583                         if (hdev->sco_cnt > hdev->sco_pkts)
4584                                 hdev->sco_cnt = hdev->sco_pkts;
4585                         break;
4586
4587                 case ISO_LINK:
4588                         if (hdev->iso_pkts) {
4589                                 hdev->iso_cnt += count;
4590                                 if (hdev->iso_cnt > hdev->iso_pkts)
4591                                         hdev->iso_cnt = hdev->iso_pkts;
4592                         } else if (hdev->le_pkts) {
4593                                 hdev->le_cnt += count;
4594                                 if (hdev->le_cnt > hdev->le_pkts)
4595                                         hdev->le_cnt = hdev->le_pkts;
4596                         } else {
4597                                 hdev->acl_cnt += count;
4598                                 if (hdev->acl_cnt > hdev->acl_pkts)
4599                                         hdev->acl_cnt = hdev->acl_pkts;
4600                         }
4601                         break;
4602
4603                 default:
4604                         bt_dev_err(hdev, "unknown type %d conn %p",
4605                                    conn->type, conn);
4606                         break;
4607                 }
4608         }
4609
4610         queue_work(hdev->workqueue, &hdev->tx_work);
4611 }
4612
4613 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4614                                                  __u16 handle)
4615 {
4616         struct hci_chan *chan;
4617
4618         switch (hdev->dev_type) {
4619         case HCI_PRIMARY:
4620                 return hci_conn_hash_lookup_handle(hdev, handle);
4621         case HCI_AMP:
4622                 chan = hci_chan_lookup_handle(hdev, handle);
4623                 if (chan)
4624                         return chan->conn;
4625                 break;
4626         default:
4627                 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4628                 break;
4629         }
4630
4631         return NULL;
4632 }
4633
4634 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4635                                     struct sk_buff *skb)
4636 {
4637         struct hci_ev_num_comp_blocks *ev = data;
4638         int i;
4639
4640         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4641                              flex_array_size(ev, handles, ev->num_hndl)))
4642                 return;
4643
4644         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4645                 bt_dev_err(hdev, "wrong event for mode %d",
4646                            hdev->flow_ctl_mode);
4647                 return;
4648         }
4649
4650         bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4651                    ev->num_hndl);
4652
4653         for (i = 0; i < ev->num_hndl; i++) {
4654                 struct hci_comp_blocks_info *info = &ev->handles[i];
4655                 struct hci_conn *conn = NULL;
4656                 __u16  handle, block_count;
4657
4658                 handle = __le16_to_cpu(info->handle);
4659                 block_count = __le16_to_cpu(info->blocks);
4660
4661                 conn = __hci_conn_lookup_handle(hdev, handle);
4662                 if (!conn)
4663                         continue;
4664
4665                 conn->sent -= block_count;
4666
4667                 switch (conn->type) {
4668                 case ACL_LINK:
4669                 case AMP_LINK:
4670                         hdev->block_cnt += block_count;
4671                         if (hdev->block_cnt > hdev->num_blocks)
4672                                 hdev->block_cnt = hdev->num_blocks;
4673                         break;
4674
4675                 default:
4676                         bt_dev_err(hdev, "unknown type %d conn %p",
4677                                    conn->type, conn);
4678                         break;
4679                 }
4680         }
4681
4682         queue_work(hdev->workqueue, &hdev->tx_work);
4683 }
4684
4685 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4686                                 struct sk_buff *skb)
4687 {
4688         struct hci_ev_mode_change *ev = data;
4689         struct hci_conn *conn;
4690
4691         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4692
4693         hci_dev_lock(hdev);
4694
4695         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4696         if (conn) {
4697                 conn->mode = ev->mode;
4698
4699                 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4700                                         &conn->flags)) {
4701                         if (conn->mode == HCI_CM_ACTIVE)
4702                                 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4703                         else
4704                                 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4705                 }
4706
4707                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4708                         hci_sco_setup(conn, ev->status);
4709         }
4710
4711         hci_dev_unlock(hdev);
4712 }
4713
4714 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4715                                      struct sk_buff *skb)
4716 {
4717         struct hci_ev_pin_code_req *ev = data;
4718         struct hci_conn *conn;
4719
4720         bt_dev_dbg(hdev, "");
4721
4722         hci_dev_lock(hdev);
4723
4724         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4725         if (!conn)
4726                 goto unlock;
4727
4728         if (conn->state == BT_CONNECTED) {
4729                 hci_conn_hold(conn);
4730                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4731                 hci_conn_drop(conn);
4732         }
4733
4734         if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4735             !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4736                 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4737                              sizeof(ev->bdaddr), &ev->bdaddr);
4738         } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4739                 u8 secure;
4740
4741                 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4742                         secure = 1;
4743                 else
4744                         secure = 0;
4745
4746                 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4747         }
4748
4749 unlock:
4750         hci_dev_unlock(hdev);
4751 }
4752
4753 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4754 {
4755         if (key_type == HCI_LK_CHANGED_COMBINATION)
4756                 return;
4757
4758         conn->pin_length = pin_len;
4759         conn->key_type = key_type;
4760
4761         switch (key_type) {
4762         case HCI_LK_LOCAL_UNIT:
4763         case HCI_LK_REMOTE_UNIT:
4764         case HCI_LK_DEBUG_COMBINATION:
4765                 return;
4766         case HCI_LK_COMBINATION:
4767                 if (pin_len == 16)
4768                         conn->pending_sec_level = BT_SECURITY_HIGH;
4769                 else
4770                         conn->pending_sec_level = BT_SECURITY_MEDIUM;
4771                 break;
4772         case HCI_LK_UNAUTH_COMBINATION_P192:
4773         case HCI_LK_UNAUTH_COMBINATION_P256:
4774                 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4775                 break;
4776         case HCI_LK_AUTH_COMBINATION_P192:
4777                 conn->pending_sec_level = BT_SECURITY_HIGH;
4778                 break;
4779         case HCI_LK_AUTH_COMBINATION_P256:
4780                 conn->pending_sec_level = BT_SECURITY_FIPS;
4781                 break;
4782         }
4783 }
4784
4785 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4786                                      struct sk_buff *skb)
4787 {
4788         struct hci_ev_link_key_req *ev = data;
4789         struct hci_cp_link_key_reply cp;
4790         struct hci_conn *conn;
4791         struct link_key *key;
4792
4793         bt_dev_dbg(hdev, "");
4794
4795         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4796                 return;
4797
4798         hci_dev_lock(hdev);
4799
4800         key = hci_find_link_key(hdev, &ev->bdaddr);
4801         if (!key) {
4802                 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4803                 goto not_found;
4804         }
4805
4806         bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4807
4808         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4809         if (conn) {
4810                 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4811
4812                 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4813                      key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4814                     conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4815                         bt_dev_dbg(hdev, "ignoring unauthenticated key");
4816                         goto not_found;
4817                 }
4818
4819                 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4820                     (conn->pending_sec_level == BT_SECURITY_HIGH ||
4821                      conn->pending_sec_level == BT_SECURITY_FIPS)) {
4822                         bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4823                         goto not_found;
4824                 }
4825
4826                 conn_set_key(conn, key->type, key->pin_len);
4827         }
4828
4829         bacpy(&cp.bdaddr, &ev->bdaddr);
4830         memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4831
4832         hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4833
4834         hci_dev_unlock(hdev);
4835
4836         return;
4837
4838 not_found:
4839         hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4840         hci_dev_unlock(hdev);
4841 }
4842
4843 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4844                                     struct sk_buff *skb)
4845 {
4846         struct hci_ev_link_key_notify *ev = data;
4847         struct hci_conn *conn;
4848         struct link_key *key;
4849         bool persistent;
4850         u8 pin_len = 0;
4851
4852         bt_dev_dbg(hdev, "");
4853
4854         hci_dev_lock(hdev);
4855
4856         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4857         if (!conn)
4858                 goto unlock;
4859
4860         /* Ignore NULL link key against CVE-2020-26555 */
4861         if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) {
4862                 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR",
4863                            &ev->bdaddr);
4864                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
4865                 hci_conn_drop(conn);
4866                 goto unlock;
4867         }
4868
4869         hci_conn_hold(conn);
4870         conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4871         hci_conn_drop(conn);
4872
4873         set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4874         conn_set_key(conn, ev->key_type, conn->pin_length);
4875
4876         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4877                 goto unlock;
4878
4879         key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4880                                 ev->key_type, pin_len, &persistent);
4881         if (!key)
4882                 goto unlock;
4883
4884         /* Update connection information since adding the key will have
4885          * fixed up the type in the case of changed combination keys.
4886          */
4887         if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4888                 conn_set_key(conn, key->type, key->pin_len);
4889
4890         mgmt_new_link_key(hdev, key, persistent);
4891
4892         /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4893          * is set. If it's not set simply remove the key from the kernel
4894          * list (we've still notified user space about it but with
4895          * store_hint being 0).
4896          */
4897         if (key->type == HCI_LK_DEBUG_COMBINATION &&
4898             !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4899                 list_del_rcu(&key->list);
4900                 kfree_rcu(key, rcu);
4901                 goto unlock;
4902         }
4903
4904         if (persistent)
4905                 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4906         else
4907                 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4908
4909 unlock:
4910         hci_dev_unlock(hdev);
4911 }
4912
4913 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4914                                  struct sk_buff *skb)
4915 {
4916         struct hci_ev_clock_offset *ev = data;
4917         struct hci_conn *conn;
4918
4919         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4920
4921         hci_dev_lock(hdev);
4922
4923         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4924         if (conn && !ev->status) {
4925                 struct inquiry_entry *ie;
4926
4927                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4928                 if (ie) {
4929                         ie->data.clock_offset = ev->clock_offset;
4930                         ie->timestamp = jiffies;
4931                 }
4932         }
4933
4934         hci_dev_unlock(hdev);
4935 }
4936
4937 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4938                                     struct sk_buff *skb)
4939 {
4940         struct hci_ev_pkt_type_change *ev = data;
4941         struct hci_conn *conn;
4942
4943         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4944
4945         hci_dev_lock(hdev);
4946
4947         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4948         if (conn && !ev->status)
4949                 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4950
4951         hci_dev_unlock(hdev);
4952 }
4953
4954 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4955                                    struct sk_buff *skb)
4956 {
4957         struct hci_ev_pscan_rep_mode *ev = data;
4958         struct inquiry_entry *ie;
4959
4960         bt_dev_dbg(hdev, "");
4961
4962         hci_dev_lock(hdev);
4963
4964         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4965         if (ie) {
4966                 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4967                 ie->timestamp = jiffies;
4968         }
4969
4970         hci_dev_unlock(hdev);
4971 }
4972
4973 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4974                                              struct sk_buff *skb)
4975 {
4976         struct hci_ev_inquiry_result_rssi *ev = edata;
4977         struct inquiry_data data;
4978         int i;
4979
4980         bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4981
4982         if (!ev->num)
4983                 return;
4984
4985         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4986                 return;
4987
4988         hci_dev_lock(hdev);
4989
4990         if (skb->len == array_size(ev->num,
4991                                    sizeof(struct inquiry_info_rssi_pscan))) {
4992                 struct inquiry_info_rssi_pscan *info;
4993
4994                 for (i = 0; i < ev->num; i++) {
4995                         u32 flags;
4996
4997                         info = hci_ev_skb_pull(hdev, skb,
4998                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4999                                                sizeof(*info));
5000                         if (!info) {
5001                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5002                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5003                                 goto unlock;
5004                         }
5005
5006                         bacpy(&data.bdaddr, &info->bdaddr);
5007                         data.pscan_rep_mode     = info->pscan_rep_mode;
5008                         data.pscan_period_mode  = info->pscan_period_mode;
5009                         data.pscan_mode         = info->pscan_mode;
5010                         memcpy(data.dev_class, info->dev_class, 3);
5011                         data.clock_offset       = info->clock_offset;
5012                         data.rssi               = info->rssi;
5013                         data.ssp_mode           = 0x00;
5014
5015                         flags = hci_inquiry_cache_update(hdev, &data, false);
5016
5017                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5018                                           info->dev_class, info->rssi,
5019                                           flags, NULL, 0, NULL, 0, 0);
5020                 }
5021         } else if (skb->len == array_size(ev->num,
5022                                           sizeof(struct inquiry_info_rssi))) {
5023                 struct inquiry_info_rssi *info;
5024
5025                 for (i = 0; i < ev->num; i++) {
5026                         u32 flags;
5027
5028                         info = hci_ev_skb_pull(hdev, skb,
5029                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
5030                                                sizeof(*info));
5031                         if (!info) {
5032                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5033                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5034                                 goto unlock;
5035                         }
5036
5037                         bacpy(&data.bdaddr, &info->bdaddr);
5038                         data.pscan_rep_mode     = info->pscan_rep_mode;
5039                         data.pscan_period_mode  = info->pscan_period_mode;
5040                         data.pscan_mode         = 0x00;
5041                         memcpy(data.dev_class, info->dev_class, 3);
5042                         data.clock_offset       = info->clock_offset;
5043                         data.rssi               = info->rssi;
5044                         data.ssp_mode           = 0x00;
5045
5046                         flags = hci_inquiry_cache_update(hdev, &data, false);
5047
5048                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5049                                           info->dev_class, info->rssi,
5050                                           flags, NULL, 0, NULL, 0, 0);
5051                 }
5052         } else {
5053                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5054                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5055         }
5056 unlock:
5057         hci_dev_unlock(hdev);
5058 }
5059
5060 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
5061                                         struct sk_buff *skb)
5062 {
5063         struct hci_ev_remote_ext_features *ev = data;
5064         struct hci_conn *conn;
5065
5066         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5067
5068         hci_dev_lock(hdev);
5069
5070         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5071         if (!conn)
5072                 goto unlock;
5073
5074         if (ev->page < HCI_MAX_PAGES)
5075                 memcpy(conn->features[ev->page], ev->features, 8);
5076
5077         if (!ev->status && ev->page == 0x01) {
5078                 struct inquiry_entry *ie;
5079
5080                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
5081                 if (ie)
5082                         ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5083
5084                 if (ev->features[0] & LMP_HOST_SSP) {
5085                         set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5086                 } else {
5087                         /* It is mandatory by the Bluetooth specification that
5088                          * Extended Inquiry Results are only used when Secure
5089                          * Simple Pairing is enabled, but some devices violate
5090                          * this.
5091                          *
5092                          * To make these devices work, the internal SSP
5093                          * enabled flag needs to be cleared if the remote host
5094                          * features do not indicate SSP support */
5095                         clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5096                 }
5097
5098                 if (ev->features[0] & LMP_HOST_SC)
5099                         set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
5100         }
5101
5102         if (conn->state != BT_CONFIG)
5103                 goto unlock;
5104
5105         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
5106                 struct hci_cp_remote_name_req cp;
5107                 memset(&cp, 0, sizeof(cp));
5108                 bacpy(&cp.bdaddr, &conn->dst);
5109                 cp.pscan_rep_mode = 0x02;
5110                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
5111         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5112                 mgmt_device_connected(hdev, conn, NULL, 0);
5113
5114         if (!hci_outgoing_auth_needed(hdev, conn)) {
5115                 conn->state = BT_CONNECTED;
5116                 hci_connect_cfm(conn, ev->status);
5117                 hci_conn_drop(conn);
5118         }
5119
5120 unlock:
5121         hci_dev_unlock(hdev);
5122 }
5123
5124 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
5125                                        struct sk_buff *skb)
5126 {
5127         struct hci_ev_sync_conn_complete *ev = data;
5128         struct hci_conn *conn;
5129         u8 status = ev->status;
5130
5131         switch (ev->link_type) {
5132         case SCO_LINK:
5133         case ESCO_LINK:
5134                 break;
5135         default:
5136                 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
5137                  * for HCI_Synchronous_Connection_Complete is limited to
5138                  * either SCO or eSCO
5139                  */
5140                 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
5141                 return;
5142         }
5143
5144         bt_dev_dbg(hdev, "status 0x%2.2x", status);
5145
5146         hci_dev_lock(hdev);
5147
5148         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
5149         if (!conn) {
5150                 if (ev->link_type == ESCO_LINK)
5151                         goto unlock;
5152
5153                 /* When the link type in the event indicates SCO connection
5154                  * and lookup of the connection object fails, then check
5155                  * if an eSCO connection object exists.
5156                  *
5157                  * The core limits the synchronous connections to either
5158                  * SCO or eSCO. The eSCO connection is preferred and tried
5159                  * to be setup first and until successfully established,
5160                  * the link type will be hinted as eSCO.
5161                  */
5162                 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
5163                 if (!conn)
5164                         goto unlock;
5165         }
5166
5167         /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
5168          * Processing it more than once per connection can corrupt kernel memory.
5169          *
5170          * As the connection handle is set here for the first time, it indicates
5171          * whether the connection is already set up.
5172          */
5173         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5174                 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5175                 goto unlock;
5176         }
5177
5178         switch (status) {
5179         case 0x00:
5180                 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
5181                 if (status) {
5182                         conn->state = BT_CLOSED;
5183                         break;
5184                 }
5185
5186                 conn->state  = BT_CONNECTED;
5187                 conn->type   = ev->link_type;
5188
5189                 hci_debugfs_create_conn(conn);
5190                 hci_conn_add_sysfs(conn);
5191                 break;
5192
5193         case 0x10:      /* Connection Accept Timeout */
5194         case 0x0d:      /* Connection Rejected due to Limited Resources */
5195         case 0x11:      /* Unsupported Feature or Parameter Value */
5196         case 0x1c:      /* SCO interval rejected */
5197         case 0x1a:      /* Unsupported Remote Feature */
5198         case 0x1e:      /* Invalid LMP Parameters */
5199         case 0x1f:      /* Unspecified error */
5200         case 0x20:      /* Unsupported LMP Parameter value */
5201                 if (conn->out) {
5202                         conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5203                                         (hdev->esco_type & EDR_ESCO_MASK);
5204                         if (hci_setup_sync(conn, conn->parent->handle))
5205                                 goto unlock;
5206                 }
5207                 fallthrough;
5208
5209         default:
5210                 conn->state = BT_CLOSED;
5211                 break;
5212         }
5213
5214         bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5215         /* Notify only in case of SCO over HCI transport data path which
5216          * is zero and non-zero value shall be non-HCI transport data path
5217          */
5218         if (conn->codec.data_path == 0 && hdev->notify) {
5219                 switch (ev->air_mode) {
5220                 case 0x02:
5221                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5222                         break;
5223                 case 0x03:
5224                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5225                         break;
5226                 }
5227         }
5228
5229         hci_connect_cfm(conn, status);
5230         if (status)
5231                 hci_conn_del(conn);
5232
5233 unlock:
5234         hci_dev_unlock(hdev);
5235 }
5236
5237 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5238 {
5239         size_t parsed = 0;
5240
5241         while (parsed < eir_len) {
5242                 u8 field_len = eir[0];
5243
5244                 if (field_len == 0)
5245                         return parsed;
5246
5247                 parsed += field_len + 1;
5248                 eir += field_len + 1;
5249         }
5250
5251         return eir_len;
5252 }
5253
5254 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5255                                             struct sk_buff *skb)
5256 {
5257         struct hci_ev_ext_inquiry_result *ev = edata;
5258         struct inquiry_data data;
5259         size_t eir_len;
5260         int i;
5261
5262         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5263                              flex_array_size(ev, info, ev->num)))
5264                 return;
5265
5266         bt_dev_dbg(hdev, "num %d", ev->num);
5267
5268         if (!ev->num)
5269                 return;
5270
5271         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5272                 return;
5273
5274         hci_dev_lock(hdev);
5275
5276         for (i = 0; i < ev->num; i++) {
5277                 struct extended_inquiry_info *info = &ev->info[i];
5278                 u32 flags;
5279                 bool name_known;
5280
5281                 bacpy(&data.bdaddr, &info->bdaddr);
5282                 data.pscan_rep_mode     = info->pscan_rep_mode;
5283                 data.pscan_period_mode  = info->pscan_period_mode;
5284                 data.pscan_mode         = 0x00;
5285                 memcpy(data.dev_class, info->dev_class, 3);
5286                 data.clock_offset       = info->clock_offset;
5287                 data.rssi               = info->rssi;
5288                 data.ssp_mode           = 0x01;
5289
5290                 if (hci_dev_test_flag(hdev, HCI_MGMT))
5291                         name_known = eir_get_data(info->data,
5292                                                   sizeof(info->data),
5293                                                   EIR_NAME_COMPLETE, NULL);
5294                 else
5295                         name_known = true;
5296
5297                 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5298
5299                 eir_len = eir_get_length(info->data, sizeof(info->data));
5300
5301                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5302                                   info->dev_class, info->rssi,
5303                                   flags, info->data, eir_len, NULL, 0, 0);
5304         }
5305
5306         hci_dev_unlock(hdev);
5307 }
5308
5309 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5310                                          struct sk_buff *skb)
5311 {
5312         struct hci_ev_key_refresh_complete *ev = data;
5313         struct hci_conn *conn;
5314
5315         bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5316                    __le16_to_cpu(ev->handle));
5317
5318         hci_dev_lock(hdev);
5319
5320         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5321         if (!conn)
5322                 goto unlock;
5323
5324         /* For BR/EDR the necessary steps are taken through the
5325          * auth_complete event.
5326          */
5327         if (conn->type != LE_LINK)
5328                 goto unlock;
5329
5330         if (!ev->status)
5331                 conn->sec_level = conn->pending_sec_level;
5332
5333         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5334
5335         if (ev->status && conn->state == BT_CONNECTED) {
5336                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5337                 hci_conn_drop(conn);
5338                 goto unlock;
5339         }
5340
5341         if (conn->state == BT_CONFIG) {
5342                 if (!ev->status)
5343                         conn->state = BT_CONNECTED;
5344
5345                 hci_connect_cfm(conn, ev->status);
5346                 hci_conn_drop(conn);
5347         } else {
5348                 hci_auth_cfm(conn, ev->status);
5349
5350                 hci_conn_hold(conn);
5351                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5352                 hci_conn_drop(conn);
5353         }
5354
5355 unlock:
5356         hci_dev_unlock(hdev);
5357 }
5358
5359 static u8 hci_get_auth_req(struct hci_conn *conn)
5360 {
5361         /* If remote requests no-bonding follow that lead */
5362         if (conn->remote_auth == HCI_AT_NO_BONDING ||
5363             conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5364                 return conn->remote_auth | (conn->auth_type & 0x01);
5365
5366         /* If both remote and local have enough IO capabilities, require
5367          * MITM protection
5368          */
5369         if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5370             conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5371                 return conn->remote_auth | 0x01;
5372
5373         /* No MITM protection possible so ignore remote requirement */
5374         return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5375 }
5376
5377 static u8 bredr_oob_data_present(struct hci_conn *conn)
5378 {
5379         struct hci_dev *hdev = conn->hdev;
5380         struct oob_data *data;
5381
5382         data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5383         if (!data)
5384                 return 0x00;
5385
5386         if (bredr_sc_enabled(hdev)) {
5387                 /* When Secure Connections is enabled, then just
5388                  * return the present value stored with the OOB
5389                  * data. The stored value contains the right present
5390                  * information. However it can only be trusted when
5391                  * not in Secure Connection Only mode.
5392                  */
5393                 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5394                         return data->present;
5395
5396                 /* When Secure Connections Only mode is enabled, then
5397                  * the P-256 values are required. If they are not
5398                  * available, then do not declare that OOB data is
5399                  * present.
5400                  */
5401                 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) ||
5402                     !crypto_memneq(data->hash256, ZERO_KEY, 16))
5403                         return 0x00;
5404
5405                 return 0x02;
5406         }
5407
5408         /* When Secure Connections is not enabled or actually
5409          * not supported by the hardware, then check that if
5410          * P-192 data values are present.
5411          */
5412         if (!crypto_memneq(data->rand192, ZERO_KEY, 16) ||
5413             !crypto_memneq(data->hash192, ZERO_KEY, 16))
5414                 return 0x00;
5415
5416         return 0x01;
5417 }
5418
5419 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5420                                     struct sk_buff *skb)
5421 {
5422         struct hci_ev_io_capa_request *ev = data;
5423         struct hci_conn *conn;
5424
5425         bt_dev_dbg(hdev, "");
5426
5427         hci_dev_lock(hdev);
5428
5429         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5430         if (!conn || !hci_conn_ssp_enabled(conn))
5431                 goto unlock;
5432
5433         hci_conn_hold(conn);
5434
5435         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5436                 goto unlock;
5437
5438         /* Allow pairing if we're pairable, the initiators of the
5439          * pairing or if the remote is not requesting bonding.
5440          */
5441         if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5442             test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5443             (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5444                 struct hci_cp_io_capability_reply cp;
5445
5446                 bacpy(&cp.bdaddr, &ev->bdaddr);
5447                 /* Change the IO capability from KeyboardDisplay
5448                  * to DisplayYesNo as it is not supported by BT spec. */
5449                 cp.capability = (conn->io_capability == 0x04) ?
5450                                 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5451
5452                 /* If we are initiators, there is no remote information yet */
5453                 if (conn->remote_auth == 0xff) {
5454                         /* Request MITM protection if our IO caps allow it
5455                          * except for the no-bonding case.
5456                          */
5457                         if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5458                             conn->auth_type != HCI_AT_NO_BONDING)
5459                                 conn->auth_type |= 0x01;
5460                 } else {
5461                         conn->auth_type = hci_get_auth_req(conn);
5462                 }
5463
5464                 /* If we're not bondable, force one of the non-bondable
5465                  * authentication requirement values.
5466                  */
5467                 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5468                         conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5469
5470                 cp.authentication = conn->auth_type;
5471                 cp.oob_data = bredr_oob_data_present(conn);
5472
5473                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5474                              sizeof(cp), &cp);
5475         } else {
5476                 struct hci_cp_io_capability_neg_reply cp;
5477
5478                 bacpy(&cp.bdaddr, &ev->bdaddr);
5479                 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5480
5481                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5482                              sizeof(cp), &cp);
5483         }
5484
5485 unlock:
5486         hci_dev_unlock(hdev);
5487 }
5488
5489 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5490                                   struct sk_buff *skb)
5491 {
5492         struct hci_ev_io_capa_reply *ev = data;
5493         struct hci_conn *conn;
5494
5495         bt_dev_dbg(hdev, "");
5496
5497         hci_dev_lock(hdev);
5498
5499         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5500         if (!conn)
5501                 goto unlock;
5502
5503         conn->remote_cap = ev->capability;
5504         conn->remote_auth = ev->authentication;
5505
5506 unlock:
5507         hci_dev_unlock(hdev);
5508 }
5509
5510 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5511                                          struct sk_buff *skb)
5512 {
5513         struct hci_ev_user_confirm_req *ev = data;
5514         int loc_mitm, rem_mitm, confirm_hint = 0;
5515         struct hci_conn *conn;
5516
5517         bt_dev_dbg(hdev, "");
5518
5519         hci_dev_lock(hdev);
5520
5521         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5522                 goto unlock;
5523
5524         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5525         if (!conn)
5526                 goto unlock;
5527
5528         loc_mitm = (conn->auth_type & 0x01);
5529         rem_mitm = (conn->remote_auth & 0x01);
5530
5531         /* If we require MITM but the remote device can't provide that
5532          * (it has NoInputNoOutput) then reject the confirmation
5533          * request. We check the security level here since it doesn't
5534          * necessarily match conn->auth_type.
5535          */
5536         if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5537             conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5538                 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5539                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5540                              sizeof(ev->bdaddr), &ev->bdaddr);
5541                 goto unlock;
5542         }
5543
5544         /* If no side requires MITM protection; auto-accept */
5545         if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5546             (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5547
5548                 /* If we're not the initiators request authorization to
5549                  * proceed from user space (mgmt_user_confirm with
5550                  * confirm_hint set to 1). The exception is if neither
5551                  * side had MITM or if the local IO capability is
5552                  * NoInputNoOutput, in which case we do auto-accept
5553                  */
5554                 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5555                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5556                     (loc_mitm || rem_mitm)) {
5557                         bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5558                         confirm_hint = 1;
5559                         goto confirm;
5560                 }
5561
5562                 /* If there already exists link key in local host, leave the
5563                  * decision to user space since the remote device could be
5564                  * legitimate or malicious.
5565                  */
5566                 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5567                         bt_dev_dbg(hdev, "Local host already has link key");
5568                         confirm_hint = 1;
5569                         goto confirm;
5570                 }
5571
5572                 BT_DBG("Auto-accept of user confirmation with %ums delay",
5573                        hdev->auto_accept_delay);
5574
5575                 if (hdev->auto_accept_delay > 0) {
5576                         int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5577                         queue_delayed_work(conn->hdev->workqueue,
5578                                            &conn->auto_accept_work, delay);
5579                         goto unlock;
5580                 }
5581
5582                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5583                              sizeof(ev->bdaddr), &ev->bdaddr);
5584                 goto unlock;
5585         }
5586
5587 confirm:
5588         mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5589                                   le32_to_cpu(ev->passkey), confirm_hint);
5590
5591 unlock:
5592         hci_dev_unlock(hdev);
5593 }
5594
5595 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5596                                          struct sk_buff *skb)
5597 {
5598         struct hci_ev_user_passkey_req *ev = data;
5599
5600         bt_dev_dbg(hdev, "");
5601
5602         if (hci_dev_test_flag(hdev, HCI_MGMT))
5603                 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5604 }
5605
5606 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5607                                         struct sk_buff *skb)
5608 {
5609         struct hci_ev_user_passkey_notify *ev = data;
5610         struct hci_conn *conn;
5611
5612         bt_dev_dbg(hdev, "");
5613
5614         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5615         if (!conn)
5616                 return;
5617
5618         conn->passkey_notify = __le32_to_cpu(ev->passkey);
5619         conn->passkey_entered = 0;
5620
5621         if (hci_dev_test_flag(hdev, HCI_MGMT))
5622                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5623                                          conn->dst_type, conn->passkey_notify,
5624                                          conn->passkey_entered);
5625 }
5626
5627 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5628                                     struct sk_buff *skb)
5629 {
5630         struct hci_ev_keypress_notify *ev = data;
5631         struct hci_conn *conn;
5632
5633         bt_dev_dbg(hdev, "");
5634
5635         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5636         if (!conn)
5637                 return;
5638
5639         switch (ev->type) {
5640         case HCI_KEYPRESS_STARTED:
5641                 conn->passkey_entered = 0;
5642                 return;
5643
5644         case HCI_KEYPRESS_ENTERED:
5645                 conn->passkey_entered++;
5646                 break;
5647
5648         case HCI_KEYPRESS_ERASED:
5649                 conn->passkey_entered--;
5650                 break;
5651
5652         case HCI_KEYPRESS_CLEARED:
5653                 conn->passkey_entered = 0;
5654                 break;
5655
5656         case HCI_KEYPRESS_COMPLETED:
5657                 return;
5658         }
5659
5660         if (hci_dev_test_flag(hdev, HCI_MGMT))
5661                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5662                                          conn->dst_type, conn->passkey_notify,
5663                                          conn->passkey_entered);
5664 }
5665
5666 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5667                                          struct sk_buff *skb)
5668 {
5669         struct hci_ev_simple_pair_complete *ev = data;
5670         struct hci_conn *conn;
5671
5672         bt_dev_dbg(hdev, "");
5673
5674         hci_dev_lock(hdev);
5675
5676         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5677         if (!conn || !hci_conn_ssp_enabled(conn))
5678                 goto unlock;
5679
5680         /* Reset the authentication requirement to unknown */
5681         conn->remote_auth = 0xff;
5682
5683         /* To avoid duplicate auth_failed events to user space we check
5684          * the HCI_CONN_AUTH_PEND flag which will be set if we
5685          * initiated the authentication. A traditional auth_complete
5686          * event gets always produced as initiator and is also mapped to
5687          * the mgmt_auth_failed event */
5688         if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5689                 mgmt_auth_failed(conn, ev->status);
5690
5691         hci_conn_drop(conn);
5692
5693 unlock:
5694         hci_dev_unlock(hdev);
5695 }
5696
5697 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5698                                          struct sk_buff *skb)
5699 {
5700         struct hci_ev_remote_host_features *ev = data;
5701         struct inquiry_entry *ie;
5702         struct hci_conn *conn;
5703
5704         bt_dev_dbg(hdev, "");
5705
5706         hci_dev_lock(hdev);
5707
5708         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5709         if (conn)
5710                 memcpy(conn->features[1], ev->features, 8);
5711
5712         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5713         if (ie)
5714                 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5715
5716         hci_dev_unlock(hdev);
5717 }
5718
5719 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5720                                             struct sk_buff *skb)
5721 {
5722         struct hci_ev_remote_oob_data_request *ev = edata;
5723         struct oob_data *data;
5724
5725         bt_dev_dbg(hdev, "");
5726
5727         hci_dev_lock(hdev);
5728
5729         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5730                 goto unlock;
5731
5732         data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5733         if (!data) {
5734                 struct hci_cp_remote_oob_data_neg_reply cp;
5735
5736                 bacpy(&cp.bdaddr, &ev->bdaddr);
5737                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5738                              sizeof(cp), &cp);
5739                 goto unlock;
5740         }
5741
5742         if (bredr_sc_enabled(hdev)) {
5743                 struct hci_cp_remote_oob_ext_data_reply cp;
5744
5745                 bacpy(&cp.bdaddr, &ev->bdaddr);
5746                 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5747                         memset(cp.hash192, 0, sizeof(cp.hash192));
5748                         memset(cp.rand192, 0, sizeof(cp.rand192));
5749                 } else {
5750                         memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5751                         memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5752                 }
5753                 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5754                 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5755
5756                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5757                              sizeof(cp), &cp);
5758         } else {
5759                 struct hci_cp_remote_oob_data_reply cp;
5760
5761                 bacpy(&cp.bdaddr, &ev->bdaddr);
5762                 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5763                 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5764
5765                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5766                              sizeof(cp), &cp);
5767         }
5768
5769 unlock:
5770         hci_dev_unlock(hdev);
5771 }
5772
5773 #if IS_ENABLED(CONFIG_BT_HS)
5774 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5775                                   struct sk_buff *skb)
5776 {
5777         struct hci_ev_channel_selected *ev = data;
5778         struct hci_conn *hcon;
5779
5780         bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5781
5782         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5783         if (!hcon)
5784                 return;
5785
5786         amp_read_loc_assoc_final_data(hdev, hcon);
5787 }
5788
5789 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5790                                       struct sk_buff *skb)
5791 {
5792         struct hci_ev_phy_link_complete *ev = data;
5793         struct hci_conn *hcon, *bredr_hcon;
5794
5795         bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5796                    ev->status);
5797
5798         hci_dev_lock(hdev);
5799
5800         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5801         if (!hcon)
5802                 goto unlock;
5803
5804         if (!hcon->amp_mgr)
5805                 goto unlock;
5806
5807         if (ev->status) {
5808                 hci_conn_del(hcon);
5809                 goto unlock;
5810         }
5811
5812         bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5813
5814         hcon->state = BT_CONNECTED;
5815         bacpy(&hcon->dst, &bredr_hcon->dst);
5816
5817         hci_conn_hold(hcon);
5818         hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5819         hci_conn_drop(hcon);
5820
5821         hci_debugfs_create_conn(hcon);
5822         hci_conn_add_sysfs(hcon);
5823
5824         amp_physical_cfm(bredr_hcon, hcon);
5825
5826 unlock:
5827         hci_dev_unlock(hdev);
5828 }
5829
5830 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5831                                      struct sk_buff *skb)
5832 {
5833         struct hci_ev_logical_link_complete *ev = data;
5834         struct hci_conn *hcon;
5835         struct hci_chan *hchan;
5836         struct amp_mgr *mgr;
5837
5838         bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5839                    le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5840
5841         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5842         if (!hcon)
5843                 return;
5844
5845         /* Create AMP hchan */
5846         hchan = hci_chan_create(hcon);
5847         if (!hchan)
5848                 return;
5849
5850         hchan->handle = le16_to_cpu(ev->handle);
5851         hchan->amp = true;
5852
5853         BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5854
5855         mgr = hcon->amp_mgr;
5856         if (mgr && mgr->bredr_chan) {
5857                 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5858
5859                 l2cap_chan_lock(bredr_chan);
5860
5861                 bredr_chan->conn->mtu = hdev->block_mtu;
5862                 l2cap_logical_cfm(bredr_chan, hchan, 0);
5863                 hci_conn_hold(hcon);
5864
5865                 l2cap_chan_unlock(bredr_chan);
5866         }
5867 }
5868
5869 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5870                                              struct sk_buff *skb)
5871 {
5872         struct hci_ev_disconn_logical_link_complete *ev = data;
5873         struct hci_chan *hchan;
5874
5875         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5876                    le16_to_cpu(ev->handle), ev->status);
5877
5878         if (ev->status)
5879                 return;
5880
5881         hci_dev_lock(hdev);
5882
5883         hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5884         if (!hchan || !hchan->amp)
5885                 goto unlock;
5886
5887         amp_destroy_logical_link(hchan, ev->reason);
5888
5889 unlock:
5890         hci_dev_unlock(hdev);
5891 }
5892
5893 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5894                                              struct sk_buff *skb)
5895 {
5896         struct hci_ev_disconn_phy_link_complete *ev = data;
5897         struct hci_conn *hcon;
5898
5899         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5900
5901         if (ev->status)
5902                 return;
5903
5904         hci_dev_lock(hdev);
5905
5906         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5907         if (hcon && hcon->type == AMP_LINK) {
5908                 hcon->state = BT_CLOSED;
5909                 hci_disconn_cfm(hcon, ev->reason);
5910                 hci_conn_del(hcon);
5911         }
5912
5913         hci_dev_unlock(hdev);
5914 }
5915 #endif
5916
5917 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5918                                 u8 bdaddr_type, bdaddr_t *local_rpa)
5919 {
5920         if (conn->out) {
5921                 conn->dst_type = bdaddr_type;
5922                 conn->resp_addr_type = bdaddr_type;
5923                 bacpy(&conn->resp_addr, bdaddr);
5924
5925                 /* Check if the controller has set a Local RPA then it must be
5926                  * used instead or hdev->rpa.
5927                  */
5928                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5929                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5930                         bacpy(&conn->init_addr, local_rpa);
5931                 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5932                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5933                         bacpy(&conn->init_addr, &conn->hdev->rpa);
5934                 } else {
5935                         hci_copy_identity_address(conn->hdev, &conn->init_addr,
5936                                                   &conn->init_addr_type);
5937                 }
5938         } else {
5939                 conn->resp_addr_type = conn->hdev->adv_addr_type;
5940                 /* Check if the controller has set a Local RPA then it must be
5941                  * used instead or hdev->rpa.
5942                  */
5943                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5944                         conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5945                         bacpy(&conn->resp_addr, local_rpa);
5946                 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5947                         /* In case of ext adv, resp_addr will be updated in
5948                          * Adv Terminated event.
5949                          */
5950                         if (!ext_adv_capable(conn->hdev))
5951                                 bacpy(&conn->resp_addr,
5952                                       &conn->hdev->random_addr);
5953                 } else {
5954                         bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5955                 }
5956
5957                 conn->init_addr_type = bdaddr_type;
5958                 bacpy(&conn->init_addr, bdaddr);
5959
5960                 /* For incoming connections, set the default minimum
5961                  * and maximum connection interval. They will be used
5962                  * to check if the parameters are in range and if not
5963                  * trigger the connection update procedure.
5964                  */
5965                 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5966                 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5967         }
5968 }
5969
5970 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5971                                  bdaddr_t *bdaddr, u8 bdaddr_type,
5972                                  bdaddr_t *local_rpa, u8 role, u16 handle,
5973                                  u16 interval, u16 latency,
5974                                  u16 supervision_timeout)
5975 {
5976         struct hci_conn_params *params;
5977         struct hci_conn *conn;
5978         struct smp_irk *irk;
5979         u8 addr_type;
5980
5981         hci_dev_lock(hdev);
5982
5983         /* All controllers implicitly stop advertising in the event of a
5984          * connection, so ensure that the state bit is cleared.
5985          */
5986         hci_dev_clear_flag(hdev, HCI_LE_ADV);
5987
5988         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
5989         if (!conn) {
5990                 /* In case of error status and there is no connection pending
5991                  * just unlock as there is nothing to cleanup.
5992                  */
5993                 if (status)
5994                         goto unlock;
5995
5996                 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role);
5997                 if (!conn) {
5998                         bt_dev_err(hdev, "no memory for new connection");
5999                         goto unlock;
6000                 }
6001
6002                 conn->dst_type = bdaddr_type;
6003
6004                 /* If we didn't have a hci_conn object previously
6005                  * but we're in central role this must be something
6006                  * initiated using an accept list. Since accept list based
6007                  * connections are not "first class citizens" we don't
6008                  * have full tracking of them. Therefore, we go ahead
6009                  * with a "best effort" approach of determining the
6010                  * initiator address based on the HCI_PRIVACY flag.
6011                  */
6012                 if (conn->out) {
6013                         conn->resp_addr_type = bdaddr_type;
6014                         bacpy(&conn->resp_addr, bdaddr);
6015                         if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
6016                                 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
6017                                 bacpy(&conn->init_addr, &hdev->rpa);
6018                         } else {
6019                                 hci_copy_identity_address(hdev,
6020                                                           &conn->init_addr,
6021                                                           &conn->init_addr_type);
6022                         }
6023                 }
6024         } else {
6025                 cancel_delayed_work(&conn->le_conn_timeout);
6026         }
6027
6028         /* The HCI_LE_Connection_Complete event is only sent once per connection.
6029          * Processing it more than once per connection can corrupt kernel memory.
6030          *
6031          * As the connection handle is set here for the first time, it indicates
6032          * whether the connection is already set up.
6033          */
6034         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
6035                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
6036                 goto unlock;
6037         }
6038
6039         le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
6040
6041         /* Lookup the identity address from the stored connection
6042          * address and address type.
6043          *
6044          * When establishing connections to an identity address, the
6045          * connection procedure will store the resolvable random
6046          * address first. Now if it can be converted back into the
6047          * identity address, start using the identity address from
6048          * now on.
6049          */
6050         irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
6051         if (irk) {
6052                 bacpy(&conn->dst, &irk->bdaddr);
6053                 conn->dst_type = irk->addr_type;
6054         }
6055
6056         conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
6057
6058         /* All connection failure handling is taken care of by the
6059          * hci_conn_failed function which is triggered by the HCI
6060          * request completion callbacks used for connecting.
6061          */
6062         if (status || hci_conn_set_handle(conn, handle))
6063                 goto unlock;
6064
6065         /* Drop the connection if it has been aborted */
6066         if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
6067                 hci_conn_drop(conn);
6068                 goto unlock;
6069         }
6070
6071         if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
6072                 addr_type = BDADDR_LE_PUBLIC;
6073         else
6074                 addr_type = BDADDR_LE_RANDOM;
6075
6076         /* Drop the connection if the device is blocked */
6077         if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
6078                 hci_conn_drop(conn);
6079                 goto unlock;
6080         }
6081
6082         if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
6083                 mgmt_device_connected(hdev, conn, NULL, 0);
6084
6085         conn->sec_level = BT_SECURITY_LOW;
6086         conn->state = BT_CONFIG;
6087
6088         /* Store current advertising instance as connection advertising instance
6089          * when sotfware rotation is in use so it can be re-enabled when
6090          * disconnected.
6091          */
6092         if (!ext_adv_capable(hdev))
6093                 conn->adv_instance = hdev->cur_adv_instance;
6094
6095         conn->le_conn_interval = interval;
6096         conn->le_conn_latency = latency;
6097         conn->le_supv_timeout = supervision_timeout;
6098
6099         hci_debugfs_create_conn(conn);
6100         hci_conn_add_sysfs(conn);
6101
6102         /* The remote features procedure is defined for central
6103          * role only. So only in case of an initiated connection
6104          * request the remote features.
6105          *
6106          * If the local controller supports peripheral-initiated features
6107          * exchange, then requesting the remote features in peripheral
6108          * role is possible. Otherwise just transition into the
6109          * connected state without requesting the remote features.
6110          */
6111         if (conn->out ||
6112             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
6113                 struct hci_cp_le_read_remote_features cp;
6114
6115                 cp.handle = __cpu_to_le16(conn->handle);
6116
6117                 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
6118                              sizeof(cp), &cp);
6119
6120                 hci_conn_hold(conn);
6121         } else {
6122                 conn->state = BT_CONNECTED;
6123                 hci_connect_cfm(conn, status);
6124         }
6125
6126         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
6127                                            conn->dst_type);
6128         if (params) {
6129                 hci_pend_le_list_del_init(params);
6130                 if (params->conn) {
6131                         hci_conn_drop(params->conn);
6132                         hci_conn_put(params->conn);
6133                         params->conn = NULL;
6134                 }
6135         }
6136
6137 unlock:
6138         hci_update_passive_scan(hdev);
6139         hci_dev_unlock(hdev);
6140 }
6141
6142 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
6143                                      struct sk_buff *skb)
6144 {
6145         struct hci_ev_le_conn_complete *ev = data;
6146
6147         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6148
6149         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6150                              NULL, ev->role, le16_to_cpu(ev->handle),
6151                              le16_to_cpu(ev->interval),
6152                              le16_to_cpu(ev->latency),
6153                              le16_to_cpu(ev->supervision_timeout));
6154 }
6155
6156 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
6157                                          struct sk_buff *skb)
6158 {
6159         struct hci_ev_le_enh_conn_complete *ev = data;
6160
6161         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6162
6163         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6164                              &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
6165                              le16_to_cpu(ev->interval),
6166                              le16_to_cpu(ev->latency),
6167                              le16_to_cpu(ev->supervision_timeout));
6168 }
6169
6170 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6171                                     struct sk_buff *skb)
6172 {
6173         struct hci_evt_le_ext_adv_set_term *ev = data;
6174         struct hci_conn *conn;
6175         struct adv_info *adv, *n;
6176
6177         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6178
6179         /* The Bluetooth Core 5.3 specification clearly states that this event
6180          * shall not be sent when the Host disables the advertising set. So in
6181          * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6182          *
6183          * When the Host disables an advertising set, all cleanup is done via
6184          * its command callback and not needed to be duplicated here.
6185          */
6186         if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6187                 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6188                 return;
6189         }
6190
6191         hci_dev_lock(hdev);
6192
6193         adv = hci_find_adv_instance(hdev, ev->handle);
6194
6195         if (ev->status) {
6196                 if (!adv)
6197                         goto unlock;
6198
6199                 /* Remove advertising as it has been terminated */
6200                 hci_remove_adv_instance(hdev, ev->handle);
6201                 mgmt_advertising_removed(NULL, hdev, ev->handle);
6202
6203                 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6204                         if (adv->enabled)
6205                                 goto unlock;
6206                 }
6207
6208                 /* We are no longer advertising, clear HCI_LE_ADV */
6209                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6210                 goto unlock;
6211         }
6212
6213         if (adv)
6214                 adv->enabled = false;
6215
6216         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6217         if (conn) {
6218                 /* Store handle in the connection so the correct advertising
6219                  * instance can be re-enabled when disconnected.
6220                  */
6221                 conn->adv_instance = ev->handle;
6222
6223                 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6224                     bacmp(&conn->resp_addr, BDADDR_ANY))
6225                         goto unlock;
6226
6227                 if (!ev->handle) {
6228                         bacpy(&conn->resp_addr, &hdev->random_addr);
6229                         goto unlock;
6230                 }
6231
6232                 if (adv)
6233                         bacpy(&conn->resp_addr, &adv->random_addr);
6234         }
6235
6236 unlock:
6237         hci_dev_unlock(hdev);
6238 }
6239
6240 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6241                                             struct sk_buff *skb)
6242 {
6243         struct hci_ev_le_conn_update_complete *ev = data;
6244         struct hci_conn *conn;
6245
6246         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6247
6248         if (ev->status)
6249                 return;
6250
6251         hci_dev_lock(hdev);
6252
6253         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6254         if (conn) {
6255 #ifdef TIZEN_BT
6256                 if (ev->status) {
6257                         hci_dev_unlock(hdev);
6258                         mgmt_le_conn_update_failed(hdev, &conn->dst,
6259                                 conn->type, conn->dst_type, ev->status);
6260                         return;
6261                 }
6262 #endif
6263                 conn->le_conn_interval = le16_to_cpu(ev->interval);
6264                 conn->le_conn_latency = le16_to_cpu(ev->latency);
6265                 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6266         }
6267
6268         hci_dev_unlock(hdev);
6269
6270 #ifdef TIZEN_BT
6271         mgmt_le_conn_updated(hdev, &conn->dst, conn->type,
6272                                 conn->dst_type, conn->le_conn_interval,
6273                                 conn->le_conn_latency, conn->le_supv_timeout);
6274 #endif
6275 }
6276
6277 /* This function requires the caller holds hdev->lock */
6278 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6279                                               bdaddr_t *addr,
6280                                               u8 addr_type, bool addr_resolved,
6281                                               u8 adv_type)
6282 {
6283         struct hci_conn *conn;
6284         struct hci_conn_params *params;
6285
6286         /* If the event is not connectable don't proceed further */
6287         if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6288                 return NULL;
6289
6290         /* Ignore if the device is blocked or hdev is suspended */
6291         if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6292             hdev->suspended)
6293                 return NULL;
6294
6295         /* Most controller will fail if we try to create new connections
6296          * while we have an existing one in peripheral role.
6297          */
6298         if (hdev->conn_hash.le_num_peripheral > 0 &&
6299             (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6300              !(hdev->le_states[3] & 0x10)))
6301                 return NULL;
6302
6303         /* If we're not connectable only connect devices that we have in
6304          * our pend_le_conns list.
6305          */
6306         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6307                                            addr_type);
6308         if (!params)
6309                 return NULL;
6310
6311         if (!params->explicit_connect) {
6312                 switch (params->auto_connect) {
6313                 case HCI_AUTO_CONN_DIRECT:
6314                         /* Only devices advertising with ADV_DIRECT_IND are
6315                          * triggering a connection attempt. This is allowing
6316                          * incoming connections from peripheral devices.
6317                          */
6318                         if (adv_type != LE_ADV_DIRECT_IND)
6319                                 return NULL;
6320                         break;
6321                 case HCI_AUTO_CONN_ALWAYS:
6322                         /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6323                          * are triggering a connection attempt. This means
6324                          * that incoming connections from peripheral device are
6325                          * accepted and also outgoing connections to peripheral
6326                          * devices are established when found.
6327                          */
6328                         break;
6329                 default:
6330                         return NULL;
6331                 }
6332         }
6333
6334         conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6335                               BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6336                               HCI_ROLE_MASTER);
6337         if (!IS_ERR(conn)) {
6338                 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6339                  * by higher layer that tried to connect, if no then
6340                  * store the pointer since we don't really have any
6341                  * other owner of the object besides the params that
6342                  * triggered it. This way we can abort the connection if
6343                  * the parameters get removed and keep the reference
6344                  * count consistent once the connection is established.
6345                  */
6346
6347                 if (!params->explicit_connect)
6348                         params->conn = hci_conn_get(conn);
6349
6350                 return conn;
6351         }
6352
6353         switch (PTR_ERR(conn)) {
6354         case -EBUSY:
6355                 /* If hci_connect() returns -EBUSY it means there is already
6356                  * an LE connection attempt going on. Since controllers don't
6357                  * support more than one connection attempt at the time, we
6358                  * don't consider this an error case.
6359                  */
6360                 break;
6361         default:
6362                 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6363                 return NULL;
6364         }
6365
6366         return NULL;
6367 }
6368
6369 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6370                                u8 bdaddr_type, bdaddr_t *direct_addr,
6371                                u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6372                                bool ext_adv, bool ctl_time, u64 instant)
6373 {
6374         struct discovery_state *d = &hdev->discovery;
6375         struct smp_irk *irk;
6376         struct hci_conn *conn;
6377         bool match, bdaddr_resolved;
6378         u32 flags;
6379         u8 *ptr;
6380
6381         switch (type) {
6382         case LE_ADV_IND:
6383         case LE_ADV_DIRECT_IND:
6384         case LE_ADV_SCAN_IND:
6385         case LE_ADV_NONCONN_IND:
6386         case LE_ADV_SCAN_RSP:
6387                 break;
6388         default:
6389                 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6390                                        "type: 0x%02x", type);
6391                 return;
6392         }
6393
6394         if (len > max_adv_len(hdev)) {
6395                 bt_dev_err_ratelimited(hdev,
6396                                        "adv larger than maximum supported");
6397                 return;
6398         }
6399
6400         /* Find the end of the data in case the report contains padded zero
6401          * bytes at the end causing an invalid length value.
6402          *
6403          * When data is NULL, len is 0 so there is no need for extra ptr
6404          * check as 'ptr < data + 0' is already false in such case.
6405          */
6406         for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6407                 if (ptr + 1 + *ptr > data + len)
6408                         break;
6409         }
6410
6411         /* Adjust for actual length. This handles the case when remote
6412          * device is advertising with incorrect data length.
6413          */
6414         len = ptr - data;
6415
6416         /* If the direct address is present, then this report is from
6417          * a LE Direct Advertising Report event. In that case it is
6418          * important to see if the address is matching the local
6419          * controller address.
6420          */
6421         if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6422                 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6423                                                   &bdaddr_resolved);
6424
6425                 /* Only resolvable random addresses are valid for these
6426                  * kind of reports and others can be ignored.
6427                  */
6428                 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6429                         return;
6430
6431                 /* If the controller is not using resolvable random
6432                  * addresses, then this report can be ignored.
6433                  */
6434                 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6435                         return;
6436
6437                 /* If the local IRK of the controller does not match
6438                  * with the resolvable random address provided, then
6439                  * this report can be ignored.
6440                  */
6441                 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6442                         return;
6443         }
6444
6445         /* Check if we need to convert to identity address */
6446         irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6447         if (irk) {
6448                 bdaddr = &irk->bdaddr;
6449                 bdaddr_type = irk->addr_type;
6450         }
6451
6452         bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6453
6454         /* Check if we have been requested to connect to this device.
6455          *
6456          * direct_addr is set only for directed advertising reports (it is NULL
6457          * for advertising reports) and is already verified to be RPA above.
6458          */
6459         conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6460                                      type);
6461         if (!ext_adv && conn && type == LE_ADV_IND &&
6462             len <= max_adv_len(hdev)) {
6463                 /* Store report for later inclusion by
6464                  * mgmt_device_connected
6465                  */
6466                 memcpy(conn->le_adv_data, data, len);
6467                 conn->le_adv_data_len = len;
6468         }
6469
6470         if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6471                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6472         else
6473                 flags = 0;
6474
6475         /* All scan results should be sent up for Mesh systems */
6476         if (hci_dev_test_flag(hdev, HCI_MESH)) {
6477                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6478                                   rssi, flags, data, len, NULL, 0, instant);
6479                 return;
6480         }
6481
6482         /* Passive scanning shouldn't trigger any device found events,
6483          * except for devices marked as CONN_REPORT for which we do send
6484          * device found events, or advertisement monitoring requested.
6485          */
6486         if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6487                 if (type == LE_ADV_DIRECT_IND)
6488                         return;
6489
6490                 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6491                                                bdaddr, bdaddr_type) &&
6492                     idr_is_empty(&hdev->adv_monitors_idr))
6493                         return;
6494
6495                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6496                                   rssi, flags, data, len, NULL, 0, 0);
6497                 return;
6498         }
6499
6500         /* When receiving a scan response, then there is no way to
6501          * know if the remote device is connectable or not. However
6502          * since scan responses are merged with a previously seen
6503          * advertising report, the flags field from that report
6504          * will be used.
6505          *
6506          * In the unlikely case that a controller just sends a scan
6507          * response event that doesn't match the pending report, then
6508          * it is marked as a standalone SCAN_RSP.
6509          */
6510         if (type == LE_ADV_SCAN_RSP)
6511                 flags = MGMT_DEV_FOUND_SCAN_RSP;
6512
6513         /* If there's nothing pending either store the data from this
6514          * event or send an immediate device found event if the data
6515          * should not be stored for later.
6516          */
6517         if (!ext_adv && !has_pending_adv_report(hdev)) {
6518                 /* If the report will trigger a SCAN_REQ store it for
6519                  * later merging.
6520                  */
6521                 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6522                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6523                                                  rssi, flags, data, len);
6524                         return;
6525                 }
6526
6527                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6528                                   rssi, flags, data, len, NULL, 0, 0);
6529                 return;
6530         }
6531
6532         /* Check if the pending report is for the same device as the new one */
6533         match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6534                  bdaddr_type == d->last_adv_addr_type);
6535
6536         /* If the pending data doesn't match this report or this isn't a
6537          * scan response (e.g. we got a duplicate ADV_IND) then force
6538          * sending of the pending data.
6539          */
6540         if (type != LE_ADV_SCAN_RSP || !match) {
6541                 /* Send out whatever is in the cache, but skip duplicates */
6542                 if (!match)
6543                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6544                                           d->last_adv_addr_type, NULL,
6545                                           d->last_adv_rssi, d->last_adv_flags,
6546                                           d->last_adv_data,
6547                                           d->last_adv_data_len, NULL, 0, 0);
6548
6549                 /* If the new report will trigger a SCAN_REQ store it for
6550                  * later merging.
6551                  */
6552                 if (!ext_adv && (type == LE_ADV_IND ||
6553                                  type == LE_ADV_SCAN_IND)) {
6554                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6555                                                  rssi, flags, data, len);
6556                         return;
6557                 }
6558
6559                 /* The advertising reports cannot be merged, so clear
6560                  * the pending report and send out a device found event.
6561                  */
6562                 clear_pending_adv_report(hdev);
6563                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6564                                   rssi, flags, data, len, NULL, 0, 0);
6565                 return;
6566         }
6567
6568         /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6569          * the new event is a SCAN_RSP. We can therefore proceed with
6570          * sending a merged device found event.
6571          */
6572         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6573                           d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6574                           d->last_adv_data, d->last_adv_data_len, data, len, 0);
6575         clear_pending_adv_report(hdev);
6576 }
6577
6578 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6579                                   struct sk_buff *skb)
6580 {
6581         struct hci_ev_le_advertising_report *ev = data;
6582         u64 instant = jiffies;
6583
6584         if (!ev->num)
6585                 return;
6586
6587         hci_dev_lock(hdev);
6588
6589         while (ev->num--) {
6590                 struct hci_ev_le_advertising_info *info;
6591                 s8 rssi;
6592
6593                 info = hci_le_ev_skb_pull(hdev, skb,
6594                                           HCI_EV_LE_ADVERTISING_REPORT,
6595                                           sizeof(*info));
6596                 if (!info)
6597                         break;
6598
6599                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6600                                         info->length + 1))
6601                         break;
6602
6603                 if (info->length <= max_adv_len(hdev)) {
6604                         rssi = info->data[info->length];
6605                         process_adv_report(hdev, info->type, &info->bdaddr,
6606                                            info->bdaddr_type, NULL, 0, rssi,
6607                                            info->data, info->length, false,
6608                                            false, instant);
6609                 } else {
6610                         bt_dev_err(hdev, "Dropping invalid advertising data");
6611                 }
6612         }
6613
6614         hci_dev_unlock(hdev);
6615 }
6616
6617 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6618 {
6619         if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6620                 switch (evt_type) {
6621                 case LE_LEGACY_ADV_IND:
6622                         return LE_ADV_IND;
6623                 case LE_LEGACY_ADV_DIRECT_IND:
6624                         return LE_ADV_DIRECT_IND;
6625                 case LE_LEGACY_ADV_SCAN_IND:
6626                         return LE_ADV_SCAN_IND;
6627                 case LE_LEGACY_NONCONN_IND:
6628                         return LE_ADV_NONCONN_IND;
6629                 case LE_LEGACY_SCAN_RSP_ADV:
6630                 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6631                         return LE_ADV_SCAN_RSP;
6632                 }
6633
6634                 goto invalid;
6635         }
6636
6637         if (evt_type & LE_EXT_ADV_CONN_IND) {
6638                 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6639                         return LE_ADV_DIRECT_IND;
6640
6641                 return LE_ADV_IND;
6642         }
6643
6644         if (evt_type & LE_EXT_ADV_SCAN_RSP)
6645                 return LE_ADV_SCAN_RSP;
6646
6647         if (evt_type & LE_EXT_ADV_SCAN_IND)
6648                 return LE_ADV_SCAN_IND;
6649
6650         if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6651             evt_type & LE_EXT_ADV_DIRECT_IND)
6652                 return LE_ADV_NONCONN_IND;
6653
6654 invalid:
6655         bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6656                                evt_type);
6657
6658         return LE_ADV_INVALID;
6659 }
6660
6661 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6662                                       struct sk_buff *skb)
6663 {
6664         struct hci_ev_le_ext_adv_report *ev = data;
6665         u64 instant = jiffies;
6666
6667         if (!ev->num)
6668                 return;
6669
6670         hci_dev_lock(hdev);
6671
6672         while (ev->num--) {
6673                 struct hci_ev_le_ext_adv_info *info;
6674                 u8 legacy_evt_type;
6675                 u16 evt_type;
6676
6677                 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6678                                           sizeof(*info));
6679                 if (!info)
6680                         break;
6681
6682                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6683                                         info->length))
6684                         break;
6685
6686                 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK;
6687                 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6688                 if (legacy_evt_type != LE_ADV_INVALID) {
6689                         process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6690                                            info->bdaddr_type, NULL, 0,
6691                                            info->rssi, info->data, info->length,
6692                                            !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6693                                            false, instant);
6694                 }
6695         }
6696
6697         hci_dev_unlock(hdev);
6698 }
6699
6700 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6701 {
6702         struct hci_cp_le_pa_term_sync cp;
6703
6704         memset(&cp, 0, sizeof(cp));
6705         cp.handle = handle;
6706
6707         return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6708 }
6709
6710 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6711                                             struct sk_buff *skb)
6712 {
6713         struct hci_ev_le_pa_sync_established *ev = data;
6714         int mask = hdev->link_mode;
6715         __u8 flags = 0;
6716         struct hci_conn *pa_sync;
6717
6718         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6719
6720         hci_dev_lock(hdev);
6721
6722         hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6723
6724         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6725         if (!(mask & HCI_LM_ACCEPT)) {
6726                 hci_le_pa_term_sync(hdev, ev->handle);
6727                 goto unlock;
6728         }
6729
6730         if (!(flags & HCI_PROTO_DEFER))
6731                 goto unlock;
6732
6733         if (ev->status) {
6734                 /* Add connection to indicate the failed PA sync event */
6735                 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
6736                                              HCI_ROLE_SLAVE);
6737
6738                 if (!pa_sync)
6739                         goto unlock;
6740
6741                 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags);
6742
6743                 /* Notify iso layer */
6744                 hci_connect_cfm(pa_sync, ev->status);
6745         }
6746
6747 unlock:
6748         hci_dev_unlock(hdev);
6749 }
6750
6751 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data,
6752                                       struct sk_buff *skb)
6753 {
6754         struct hci_ev_le_per_adv_report *ev = data;
6755         int mask = hdev->link_mode;
6756         __u8 flags = 0;
6757
6758         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
6759
6760         hci_dev_lock(hdev);
6761
6762         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
6763         if (!(mask & HCI_LM_ACCEPT))
6764                 hci_le_pa_term_sync(hdev, ev->sync_handle);
6765
6766         hci_dev_unlock(hdev);
6767 }
6768
6769 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6770                                             struct sk_buff *skb)
6771 {
6772         struct hci_ev_le_remote_feat_complete *ev = data;
6773         struct hci_conn *conn;
6774
6775         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6776
6777         hci_dev_lock(hdev);
6778
6779         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6780         if (conn) {
6781                 if (!ev->status)
6782                         memcpy(conn->features[0], ev->features, 8);
6783
6784                 if (conn->state == BT_CONFIG) {
6785                         __u8 status;
6786
6787                         /* If the local controller supports peripheral-initiated
6788                          * features exchange, but the remote controller does
6789                          * not, then it is possible that the error code 0x1a
6790                          * for unsupported remote feature gets returned.
6791                          *
6792                          * In this specific case, allow the connection to
6793                          * transition into connected state and mark it as
6794                          * successful.
6795                          */
6796                         if (!conn->out && ev->status == 0x1a &&
6797                             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6798                                 status = 0x00;
6799                         else
6800                                 status = ev->status;
6801
6802                         conn->state = BT_CONNECTED;
6803                         hci_connect_cfm(conn, status);
6804                         hci_conn_drop(conn);
6805                 }
6806         }
6807
6808         hci_dev_unlock(hdev);
6809 }
6810
6811 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6812                                    struct sk_buff *skb)
6813 {
6814         struct hci_ev_le_ltk_req *ev = data;
6815         struct hci_cp_le_ltk_reply cp;
6816         struct hci_cp_le_ltk_neg_reply neg;
6817         struct hci_conn *conn;
6818         struct smp_ltk *ltk;
6819
6820         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6821
6822         hci_dev_lock(hdev);
6823
6824         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6825         if (conn == NULL)
6826                 goto not_found;
6827
6828         ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6829         if (!ltk)
6830                 goto not_found;
6831
6832         if (smp_ltk_is_sc(ltk)) {
6833                 /* With SC both EDiv and Rand are set to zero */
6834                 if (ev->ediv || ev->rand)
6835                         goto not_found;
6836         } else {
6837                 /* For non-SC keys check that EDiv and Rand match */
6838                 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6839                         goto not_found;
6840         }
6841
6842         memcpy(cp.ltk, ltk->val, ltk->enc_size);
6843         memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6844         cp.handle = cpu_to_le16(conn->handle);
6845
6846         conn->pending_sec_level = smp_ltk_sec_level(ltk);
6847
6848         conn->enc_key_size = ltk->enc_size;
6849
6850         hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6851
6852         /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6853          * temporary key used to encrypt a connection following
6854          * pairing. It is used during the Encrypted Session Setup to
6855          * distribute the keys. Later, security can be re-established
6856          * using a distributed LTK.
6857          */
6858         if (ltk->type == SMP_STK) {
6859                 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6860                 list_del_rcu(&ltk->list);
6861                 kfree_rcu(ltk, rcu);
6862         } else {
6863                 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6864         }
6865
6866         hci_dev_unlock(hdev);
6867
6868         return;
6869
6870 not_found:
6871         neg.handle = ev->handle;
6872         hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6873         hci_dev_unlock(hdev);
6874 }
6875
6876 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6877                                       u8 reason)
6878 {
6879         struct hci_cp_le_conn_param_req_neg_reply cp;
6880
6881         cp.handle = cpu_to_le16(handle);
6882         cp.reason = reason;
6883
6884         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6885                      &cp);
6886 }
6887
6888 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6889                                              struct sk_buff *skb)
6890 {
6891         struct hci_ev_le_remote_conn_param_req *ev = data;
6892         struct hci_cp_le_conn_param_req_reply cp;
6893         struct hci_conn *hcon;
6894         u16 handle, min, max, latency, timeout;
6895
6896         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6897
6898         handle = le16_to_cpu(ev->handle);
6899         min = le16_to_cpu(ev->interval_min);
6900         max = le16_to_cpu(ev->interval_max);
6901         latency = le16_to_cpu(ev->latency);
6902         timeout = le16_to_cpu(ev->timeout);
6903
6904         hcon = hci_conn_hash_lookup_handle(hdev, handle);
6905         if (!hcon || hcon->state != BT_CONNECTED)
6906                 return send_conn_param_neg_reply(hdev, handle,
6907                                                  HCI_ERROR_UNKNOWN_CONN_ID);
6908
6909         if (hci_check_conn_params(min, max, latency, timeout))
6910                 return send_conn_param_neg_reply(hdev, handle,
6911                                                  HCI_ERROR_INVALID_LL_PARAMS);
6912
6913         if (hcon->role == HCI_ROLE_MASTER) {
6914                 struct hci_conn_params *params;
6915                 u8 store_hint;
6916
6917                 hci_dev_lock(hdev);
6918
6919                 params = hci_conn_params_lookup(hdev, &hcon->dst,
6920                                                 hcon->dst_type);
6921                 if (params) {
6922                         params->conn_min_interval = min;
6923                         params->conn_max_interval = max;
6924                         params->conn_latency = latency;
6925                         params->supervision_timeout = timeout;
6926                         store_hint = 0x01;
6927                 } else {
6928                         store_hint = 0x00;
6929                 }
6930
6931                 hci_dev_unlock(hdev);
6932
6933                 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6934                                     store_hint, min, max, latency, timeout);
6935         }
6936
6937         cp.handle = ev->handle;
6938         cp.interval_min = ev->interval_min;
6939         cp.interval_max = ev->interval_max;
6940         cp.latency = ev->latency;
6941         cp.timeout = ev->timeout;
6942         cp.min_ce_len = 0;
6943         cp.max_ce_len = 0;
6944
6945         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6946 }
6947
6948 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6949                                          struct sk_buff *skb)
6950 {
6951         struct hci_ev_le_direct_adv_report *ev = data;
6952         u64 instant = jiffies;
6953         int i;
6954
6955         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6956                                 flex_array_size(ev, info, ev->num)))
6957                 return;
6958
6959         if (!ev->num)
6960                 return;
6961
6962         hci_dev_lock(hdev);
6963
6964         for (i = 0; i < ev->num; i++) {
6965                 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6966
6967                 process_adv_report(hdev, info->type, &info->bdaddr,
6968                                    info->bdaddr_type, &info->direct_addr,
6969                                    info->direct_addr_type, info->rssi, NULL, 0,
6970                                    false, false, instant);
6971         }
6972
6973         hci_dev_unlock(hdev);
6974 }
6975
6976 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6977                                   struct sk_buff *skb)
6978 {
6979         struct hci_ev_le_phy_update_complete *ev = data;
6980         struct hci_conn *conn;
6981
6982         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6983
6984         if (ev->status)
6985                 return;
6986
6987         hci_dev_lock(hdev);
6988
6989         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6990         if (!conn)
6991                 goto unlock;
6992
6993         conn->le_tx_phy = ev->tx_phy;
6994         conn->le_rx_phy = ev->rx_phy;
6995
6996 unlock:
6997         hci_dev_unlock(hdev);
6998 }
6999
7000 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
7001                                         struct sk_buff *skb)
7002 {
7003         struct hci_evt_le_cis_established *ev = data;
7004         struct hci_conn *conn;
7005         struct bt_iso_qos *qos;
7006         bool pending = false;
7007         u16 handle = __le16_to_cpu(ev->handle);
7008
7009         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7010
7011         hci_dev_lock(hdev);
7012
7013         conn = hci_conn_hash_lookup_handle(hdev, handle);
7014         if (!conn) {
7015                 bt_dev_err(hdev,
7016                            "Unable to find connection with handle 0x%4.4x",
7017                            handle);
7018                 goto unlock;
7019         }
7020
7021         if (conn->type != ISO_LINK) {
7022                 bt_dev_err(hdev,
7023                            "Invalid connection link type handle 0x%4.4x",
7024                            handle);
7025                 goto unlock;
7026         }
7027
7028         qos = &conn->iso_qos;
7029
7030         pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags);
7031
7032         /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */
7033         qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250;
7034         qos->ucast.out.interval = qos->ucast.in.interval;
7035
7036         switch (conn->role) {
7037         case HCI_ROLE_SLAVE:
7038                 /* Convert Transport Latency (us) to Latency (msec) */
7039                 qos->ucast.in.latency =
7040                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
7041                                           1000);
7042                 qos->ucast.out.latency =
7043                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
7044                                           1000);
7045                 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu);
7046                 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu);
7047                 qos->ucast.in.phy = ev->c_phy;
7048                 qos->ucast.out.phy = ev->p_phy;
7049                 break;
7050         case HCI_ROLE_MASTER:
7051                 /* Convert Transport Latency (us) to Latency (msec) */
7052                 qos->ucast.out.latency =
7053                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
7054                                           1000);
7055                 qos->ucast.in.latency =
7056                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
7057                                           1000);
7058                 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu);
7059                 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu);
7060                 qos->ucast.out.phy = ev->c_phy;
7061                 qos->ucast.in.phy = ev->p_phy;
7062                 break;
7063         }
7064
7065         if (!ev->status) {
7066                 conn->state = BT_CONNECTED;
7067                 hci_debugfs_create_conn(conn);
7068                 hci_conn_add_sysfs(conn);
7069                 hci_iso_setup_path(conn);
7070                 goto unlock;
7071         }
7072
7073         conn->state = BT_CLOSED;
7074         hci_connect_cfm(conn, ev->status);
7075         hci_conn_del(conn);
7076
7077 unlock:
7078         if (pending)
7079                 hci_le_create_cis_pending(hdev);
7080
7081         hci_dev_unlock(hdev);
7082 }
7083
7084 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
7085 {
7086         struct hci_cp_le_reject_cis cp;
7087
7088         memset(&cp, 0, sizeof(cp));
7089         cp.handle = handle;
7090         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
7091         hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
7092 }
7093
7094 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
7095 {
7096         struct hci_cp_le_accept_cis cp;
7097
7098         memset(&cp, 0, sizeof(cp));
7099         cp.handle = handle;
7100         hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
7101 }
7102
7103 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
7104                                struct sk_buff *skb)
7105 {
7106         struct hci_evt_le_cis_req *ev = data;
7107         u16 acl_handle, cis_handle;
7108         struct hci_conn *acl, *cis;
7109         int mask;
7110         __u8 flags = 0;
7111
7112         acl_handle = __le16_to_cpu(ev->acl_handle);
7113         cis_handle = __le16_to_cpu(ev->cis_handle);
7114
7115         bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
7116                    acl_handle, cis_handle, ev->cig_id, ev->cis_id);
7117
7118         hci_dev_lock(hdev);
7119
7120         acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
7121         if (!acl)
7122                 goto unlock;
7123
7124         mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
7125         if (!(mask & HCI_LM_ACCEPT)) {
7126                 hci_le_reject_cis(hdev, ev->cis_handle);
7127                 goto unlock;
7128         }
7129
7130         cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
7131         if (!cis) {
7132                 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE,
7133                                    cis_handle);
7134                 if (!cis) {
7135                         hci_le_reject_cis(hdev, ev->cis_handle);
7136                         goto unlock;
7137                 }
7138         }
7139
7140         cis->iso_qos.ucast.cig = ev->cig_id;
7141         cis->iso_qos.ucast.cis = ev->cis_id;
7142
7143         if (!(flags & HCI_PROTO_DEFER)) {
7144                 hci_le_accept_cis(hdev, ev->cis_handle);
7145         } else {
7146                 cis->state = BT_CONNECT2;
7147                 hci_connect_cfm(cis, 0);
7148         }
7149
7150 unlock:
7151         hci_dev_unlock(hdev);
7152 }
7153
7154 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data)
7155 {
7156         u8 handle = PTR_UINT(data);
7157
7158         return hci_le_terminate_big_sync(hdev, handle,
7159                                          HCI_ERROR_LOCAL_HOST_TERM);
7160 }
7161
7162 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
7163                                            struct sk_buff *skb)
7164 {
7165         struct hci_evt_le_create_big_complete *ev = data;
7166         struct hci_conn *conn;
7167         __u8 i = 0;
7168
7169         BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
7170
7171         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
7172                                 flex_array_size(ev, bis_handle, ev->num_bis)))
7173                 return;
7174
7175         hci_dev_lock(hdev);
7176         rcu_read_lock();
7177
7178         /* Connect all BISes that are bound to the BIG */
7179         list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
7180                 if (bacmp(&conn->dst, BDADDR_ANY) ||
7181                     conn->type != ISO_LINK ||
7182                     conn->iso_qos.bcast.big != ev->handle)
7183                         continue;
7184
7185                 if (hci_conn_set_handle(conn,
7186                                         __le16_to_cpu(ev->bis_handle[i++])))
7187                         continue;
7188
7189                 if (!ev->status) {
7190                         conn->state = BT_CONNECTED;
7191                         set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
7192                         rcu_read_unlock();
7193                         hci_debugfs_create_conn(conn);
7194                         hci_conn_add_sysfs(conn);
7195                         hci_iso_setup_path(conn);
7196                         rcu_read_lock();
7197                         continue;
7198                 }
7199
7200                 hci_connect_cfm(conn, ev->status);
7201                 rcu_read_unlock();
7202                 hci_conn_del(conn);
7203                 rcu_read_lock();
7204         }
7205
7206         rcu_read_unlock();
7207
7208         if (!ev->status && !i)
7209                 /* If no BISes have been connected for the BIG,
7210                  * terminate. This is in case all bound connections
7211                  * have been closed before the BIG creation
7212                  * has completed.
7213                  */
7214                 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
7215                                    UINT_PTR(ev->handle), NULL);
7216
7217         hci_dev_unlock(hdev);
7218 }
7219
7220 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
7221                                             struct sk_buff *skb)
7222 {
7223         struct hci_evt_le_big_sync_estabilished *ev = data;
7224         struct hci_conn *bis;
7225         struct hci_conn *pa_sync;
7226         int i;
7227
7228         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7229
7230         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7231                                 flex_array_size(ev, bis, ev->num_bis)))
7232                 return;
7233
7234         hci_dev_lock(hdev);
7235
7236         if (!ev->status) {
7237                 pa_sync = hci_conn_hash_lookup_pa_sync_big_handle(hdev, ev->handle);
7238                 if (pa_sync)
7239                         /* Also mark the BIG sync established event on the
7240                          * associated PA sync hcon
7241                          */
7242                         set_bit(HCI_CONN_BIG_SYNC, &pa_sync->flags);
7243         }
7244
7245         for (i = 0; i < ev->num_bis; i++) {
7246                 u16 handle = le16_to_cpu(ev->bis[i]);
7247                 __le32 interval;
7248
7249                 bis = hci_conn_hash_lookup_handle(hdev, handle);
7250                 if (!bis) {
7251                         bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
7252                                            HCI_ROLE_SLAVE, handle);
7253                         if (!bis)
7254                                 continue;
7255                 }
7256
7257                 if (ev->status != 0x42)
7258                         /* Mark PA sync as established */
7259                         set_bit(HCI_CONN_PA_SYNC, &bis->flags);
7260
7261                 bis->iso_qos.bcast.big = ev->handle;
7262                 memset(&interval, 0, sizeof(interval));
7263                 memcpy(&interval, ev->latency, sizeof(ev->latency));
7264                 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval);
7265                 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7266                 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7267                 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
7268
7269                 if (!ev->status) {
7270                         set_bit(HCI_CONN_BIG_SYNC, &bis->flags);
7271                         hci_iso_setup_path(bis);
7272                 }
7273         }
7274
7275         /* In case BIG sync failed, notify each failed connection to
7276          * the user after all hci connections have been added
7277          */
7278         if (ev->status)
7279                 for (i = 0; i < ev->num_bis; i++) {
7280                         u16 handle = le16_to_cpu(ev->bis[i]);
7281
7282                         bis = hci_conn_hash_lookup_handle(hdev, handle);
7283
7284                         set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags);
7285                         hci_connect_cfm(bis, ev->status);
7286                 }
7287
7288         hci_dev_unlock(hdev);
7289 }
7290
7291 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7292                                            struct sk_buff *skb)
7293 {
7294         struct hci_evt_le_big_info_adv_report *ev = data;
7295         int mask = hdev->link_mode;
7296         __u8 flags = 0;
7297         struct hci_conn *pa_sync;
7298
7299         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7300
7301         hci_dev_lock(hdev);
7302
7303         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7304         if (!(mask & HCI_LM_ACCEPT)) {
7305                 hci_le_pa_term_sync(hdev, ev->sync_handle);
7306                 goto unlock;
7307         }
7308
7309         if (!(flags & HCI_PROTO_DEFER))
7310                 goto unlock;
7311
7312         pa_sync = hci_conn_hash_lookup_pa_sync_handle
7313                         (hdev,
7314                         le16_to_cpu(ev->sync_handle));
7315
7316         if (pa_sync)
7317                 goto unlock;
7318
7319         /* Add connection to indicate the PA sync event */
7320         pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
7321                                      HCI_ROLE_SLAVE);
7322
7323         if (!pa_sync)
7324                 goto unlock;
7325
7326         pa_sync->sync_handle = le16_to_cpu(ev->sync_handle);
7327         set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags);
7328
7329         /* Notify iso layer */
7330         hci_connect_cfm(pa_sync, 0x00);
7331
7332 unlock:
7333         hci_dev_unlock(hdev);
7334 }
7335
7336 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7337 [_op] = { \
7338         .func = _func, \
7339         .min_len = _min_len, \
7340         .max_len = _max_len, \
7341 }
7342
7343 #define HCI_LE_EV(_op, _func, _len) \
7344         HCI_LE_EV_VL(_op, _func, _len, _len)
7345
7346 #define HCI_LE_EV_STATUS(_op, _func) \
7347         HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7348
7349 /* Entries in this table shall have their position according to the subevent
7350  * opcode they handle so the use of the macros above is recommend since it does
7351  * attempt to initialize at its proper index using Designated Initializers that
7352  * way events without a callback function can be ommited.
7353  */
7354 static const struct hci_le_ev {
7355         void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7356         u16  min_len;
7357         u16  max_len;
7358 } hci_le_ev_table[U8_MAX + 1] = {
7359         /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7360         HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7361                   sizeof(struct hci_ev_le_conn_complete)),
7362         /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7363         HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7364                      sizeof(struct hci_ev_le_advertising_report),
7365                      HCI_MAX_EVENT_SIZE),
7366         /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7367         HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7368                   hci_le_conn_update_complete_evt,
7369                   sizeof(struct hci_ev_le_conn_update_complete)),
7370         /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7371         HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7372                   hci_le_remote_feat_complete_evt,
7373                   sizeof(struct hci_ev_le_remote_feat_complete)),
7374         /* [0x05 = HCI_EV_LE_LTK_REQ] */
7375         HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7376                   sizeof(struct hci_ev_le_ltk_req)),
7377         /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7378         HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7379                   hci_le_remote_conn_param_req_evt,
7380                   sizeof(struct hci_ev_le_remote_conn_param_req)),
7381         /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7382         HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7383                   hci_le_enh_conn_complete_evt,
7384                   sizeof(struct hci_ev_le_enh_conn_complete)),
7385         /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7386         HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7387                      sizeof(struct hci_ev_le_direct_adv_report),
7388                      HCI_MAX_EVENT_SIZE),
7389         /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7390         HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7391                   sizeof(struct hci_ev_le_phy_update_complete)),
7392         /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7393         HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7394                      sizeof(struct hci_ev_le_ext_adv_report),
7395                      HCI_MAX_EVENT_SIZE),
7396         /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7397         HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7398                   hci_le_pa_sync_estabilished_evt,
7399                   sizeof(struct hci_ev_le_pa_sync_established)),
7400         /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */
7401         HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT,
7402                                  hci_le_per_adv_report_evt,
7403                                  sizeof(struct hci_ev_le_per_adv_report),
7404                                  HCI_MAX_EVENT_SIZE),
7405         /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7406         HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7407                   sizeof(struct hci_evt_le_ext_adv_set_term)),
7408         /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7409         HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7410                   sizeof(struct hci_evt_le_cis_established)),
7411         /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7412         HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7413                   sizeof(struct hci_evt_le_cis_req)),
7414         /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7415         HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7416                      hci_le_create_big_complete_evt,
7417                      sizeof(struct hci_evt_le_create_big_complete),
7418                      HCI_MAX_EVENT_SIZE),
7419         /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7420         HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7421                      hci_le_big_sync_established_evt,
7422                      sizeof(struct hci_evt_le_big_sync_estabilished),
7423                      HCI_MAX_EVENT_SIZE),
7424         /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7425         HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7426                      hci_le_big_info_adv_report_evt,
7427                      sizeof(struct hci_evt_le_big_info_adv_report),
7428                      HCI_MAX_EVENT_SIZE),
7429 };
7430
7431 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7432                             struct sk_buff *skb, u16 *opcode, u8 *status,
7433                             hci_req_complete_t *req_complete,
7434                             hci_req_complete_skb_t *req_complete_skb)
7435 {
7436         struct hci_ev_le_meta *ev = data;
7437         const struct hci_le_ev *subev;
7438
7439         bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7440
7441         /* Only match event if command OGF is for LE */
7442         if (hdev->sent_cmd &&
7443             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7444             hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7445                 *opcode = hci_skb_opcode(hdev->sent_cmd);
7446                 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7447                                      req_complete_skb);
7448         }
7449
7450         subev = &hci_le_ev_table[ev->subevent];
7451         if (!subev->func)
7452                 return;
7453
7454         if (skb->len < subev->min_len) {
7455                 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7456                            ev->subevent, skb->len, subev->min_len);
7457                 return;
7458         }
7459
7460         /* Just warn if the length is over max_len size it still be
7461          * possible to partially parse the event so leave to callback to
7462          * decide if that is acceptable.
7463          */
7464         if (skb->len > subev->max_len)
7465                 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7466                             ev->subevent, skb->len, subev->max_len);
7467         data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7468         if (!data)
7469                 return;
7470
7471         subev->func(hdev, data, skb);
7472 }
7473
7474 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7475                                  u8 event, struct sk_buff *skb)
7476 {
7477         struct hci_ev_cmd_complete *ev;
7478         struct hci_event_hdr *hdr;
7479
7480         if (!skb)
7481                 return false;
7482
7483         hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7484         if (!hdr)
7485                 return false;
7486
7487         if (event) {
7488                 if (hdr->evt != event)
7489                         return false;
7490                 return true;
7491         }
7492
7493         /* Check if request ended in Command Status - no way to retrieve
7494          * any extra parameters in this case.
7495          */
7496         if (hdr->evt == HCI_EV_CMD_STATUS)
7497                 return false;
7498
7499         if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7500                 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7501                            hdr->evt);
7502                 return false;
7503         }
7504
7505         ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7506         if (!ev)
7507                 return false;
7508
7509         if (opcode != __le16_to_cpu(ev->opcode)) {
7510                 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7511                        __le16_to_cpu(ev->opcode));
7512                 return false;
7513         }
7514
7515         return true;
7516 }
7517
7518 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7519                                   struct sk_buff *skb)
7520 {
7521         struct hci_ev_le_advertising_info *adv;
7522         struct hci_ev_le_direct_adv_info *direct_adv;
7523         struct hci_ev_le_ext_adv_info *ext_adv;
7524         const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7525         const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7526
7527         hci_dev_lock(hdev);
7528
7529         /* If we are currently suspended and this is the first BT event seen,
7530          * save the wake reason associated with the event.
7531          */
7532         if (!hdev->suspended || hdev->wake_reason)
7533                 goto unlock;
7534
7535         /* Default to remote wake. Values for wake_reason are documented in the
7536          * Bluez mgmt api docs.
7537          */
7538         hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7539
7540         /* Once configured for remote wakeup, we should only wake up for
7541          * reconnections. It's useful to see which device is waking us up so
7542          * keep track of the bdaddr of the connection event that woke us up.
7543          */
7544         if (event == HCI_EV_CONN_REQUEST) {
7545                 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7546                 hdev->wake_addr_type = BDADDR_BREDR;
7547         } else if (event == HCI_EV_CONN_COMPLETE) {
7548                 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7549                 hdev->wake_addr_type = BDADDR_BREDR;
7550         } else if (event == HCI_EV_LE_META) {
7551                 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7552                 u8 subevent = le_ev->subevent;
7553                 u8 *ptr = &skb->data[sizeof(*le_ev)];
7554                 u8 num_reports = *ptr;
7555
7556                 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7557                      subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7558                      subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7559                     num_reports) {
7560                         adv = (void *)(ptr + 1);
7561                         direct_adv = (void *)(ptr + 1);
7562                         ext_adv = (void *)(ptr + 1);
7563
7564                         switch (subevent) {
7565                         case HCI_EV_LE_ADVERTISING_REPORT:
7566                                 bacpy(&hdev->wake_addr, &adv->bdaddr);
7567                                 hdev->wake_addr_type = adv->bdaddr_type;
7568                                 break;
7569                         case HCI_EV_LE_DIRECT_ADV_REPORT:
7570                                 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7571                                 hdev->wake_addr_type = direct_adv->bdaddr_type;
7572                                 break;
7573                         case HCI_EV_LE_EXT_ADV_REPORT:
7574                                 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7575                                 hdev->wake_addr_type = ext_adv->bdaddr_type;
7576                                 break;
7577                         }
7578                 }
7579         } else {
7580                 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7581         }
7582
7583 unlock:
7584         hci_dev_unlock(hdev);
7585 }
7586
7587 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7588 [_op] = { \
7589         .req = false, \
7590         .func = _func, \
7591         .min_len = _min_len, \
7592         .max_len = _max_len, \
7593 }
7594
7595 #define HCI_EV(_op, _func, _len) \
7596         HCI_EV_VL(_op, _func, _len, _len)
7597
7598 #define HCI_EV_STATUS(_op, _func) \
7599         HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7600
7601 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7602 [_op] = { \
7603         .req = true, \
7604         .func_req = _func, \
7605         .min_len = _min_len, \
7606         .max_len = _max_len, \
7607 }
7608
7609 #define HCI_EV_REQ(_op, _func, _len) \
7610         HCI_EV_REQ_VL(_op, _func, _len, _len)
7611
7612 /* Entries in this table shall have their position according to the event opcode
7613  * they handle so the use of the macros above is recommend since it does attempt
7614  * to initialize at its proper index using Designated Initializers that way
7615  * events without a callback function don't have entered.
7616  */
7617 static const struct hci_ev {
7618         bool req;
7619         union {
7620                 void (*func)(struct hci_dev *hdev, void *data,
7621                              struct sk_buff *skb);
7622                 void (*func_req)(struct hci_dev *hdev, void *data,
7623                                  struct sk_buff *skb, u16 *opcode, u8 *status,
7624                                  hci_req_complete_t *req_complete,
7625                                  hci_req_complete_skb_t *req_complete_skb);
7626         };
7627         u16  min_len;
7628         u16  max_len;
7629 } hci_ev_table[U8_MAX + 1] = {
7630         /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7631         HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7632         /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7633         HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7634                   sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7635         /* [0x03 = HCI_EV_CONN_COMPLETE] */
7636         HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7637                sizeof(struct hci_ev_conn_complete)),
7638         /* [0x04 = HCI_EV_CONN_REQUEST] */
7639         HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7640                sizeof(struct hci_ev_conn_request)),
7641         /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7642         HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7643                sizeof(struct hci_ev_disconn_complete)),
7644         /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7645         HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7646                sizeof(struct hci_ev_auth_complete)),
7647         /* [0x07 = HCI_EV_REMOTE_NAME] */
7648         HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7649                sizeof(struct hci_ev_remote_name)),
7650         /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7651         HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7652                sizeof(struct hci_ev_encrypt_change)),
7653         /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7654         HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7655                hci_change_link_key_complete_evt,
7656                sizeof(struct hci_ev_change_link_key_complete)),
7657         /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7658         HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7659                sizeof(struct hci_ev_remote_features)),
7660         /* [0x0e = HCI_EV_CMD_COMPLETE] */
7661         HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7662                       sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7663         /* [0x0f = HCI_EV_CMD_STATUS] */
7664         HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7665                    sizeof(struct hci_ev_cmd_status)),
7666         /* [0x10 = HCI_EV_CMD_STATUS] */
7667         HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7668                sizeof(struct hci_ev_hardware_error)),
7669         /* [0x12 = HCI_EV_ROLE_CHANGE] */
7670         HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7671                sizeof(struct hci_ev_role_change)),
7672         /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7673         HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7674                   sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7675         /* [0x14 = HCI_EV_MODE_CHANGE] */
7676         HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7677                sizeof(struct hci_ev_mode_change)),
7678         /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7679         HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7680                sizeof(struct hci_ev_pin_code_req)),
7681         /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7682         HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7683                sizeof(struct hci_ev_link_key_req)),
7684         /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7685         HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7686                sizeof(struct hci_ev_link_key_notify)),
7687         /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7688         HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7689                sizeof(struct hci_ev_clock_offset)),
7690         /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7691         HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7692                sizeof(struct hci_ev_pkt_type_change)),
7693         /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7694         HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7695                sizeof(struct hci_ev_pscan_rep_mode)),
7696         /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7697         HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7698                   hci_inquiry_result_with_rssi_evt,
7699                   sizeof(struct hci_ev_inquiry_result_rssi),
7700                   HCI_MAX_EVENT_SIZE),
7701         /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7702         HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7703                sizeof(struct hci_ev_remote_ext_features)),
7704         /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7705         HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7706                sizeof(struct hci_ev_sync_conn_complete)),
7707         /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7708         HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7709                   hci_extended_inquiry_result_evt,
7710                   sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7711         /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7712         HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7713                sizeof(struct hci_ev_key_refresh_complete)),
7714         /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7715         HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7716                sizeof(struct hci_ev_io_capa_request)),
7717         /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7718         HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7719                sizeof(struct hci_ev_io_capa_reply)),
7720         /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7721         HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7722                sizeof(struct hci_ev_user_confirm_req)),
7723         /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7724         HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7725                sizeof(struct hci_ev_user_passkey_req)),
7726         /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7727         HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7728                sizeof(struct hci_ev_remote_oob_data_request)),
7729         /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7730         HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7731                sizeof(struct hci_ev_simple_pair_complete)),
7732         /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7733         HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7734                sizeof(struct hci_ev_user_passkey_notify)),
7735         /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7736         HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7737                sizeof(struct hci_ev_keypress_notify)),
7738         /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7739         HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7740                sizeof(struct hci_ev_remote_host_features)),
7741         /* [0x3e = HCI_EV_LE_META] */
7742         HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7743                       sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7744 #if IS_ENABLED(CONFIG_BT_HS)
7745         /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7746         HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7747                sizeof(struct hci_ev_phy_link_complete)),
7748         /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7749         HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7750                sizeof(struct hci_ev_channel_selected)),
7751         /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7752         HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7753                hci_disconn_loglink_complete_evt,
7754                sizeof(struct hci_ev_disconn_logical_link_complete)),
7755         /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7756         HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7757                sizeof(struct hci_ev_logical_link_complete)),
7758         /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7759         HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7760                hci_disconn_phylink_complete_evt,
7761                sizeof(struct hci_ev_disconn_phy_link_complete)),
7762 #endif
7763         /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7764         HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7765                sizeof(struct hci_ev_num_comp_blocks)),
7766 #ifdef TIZEN_BT
7767         /* [0xFF = HCI_EV_VENDOR_SPECIFIC] */
7768         HCI_EV(HCI_EV_VENDOR_SPECIFIC, hci_vendor_specific_evt,
7769                sizeof(struct hci_ev_vendor_specific)),
7770 #else
7771         /* [0xff = HCI_EV_VENDOR] */
7772         HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7773 #endif
7774 };
7775
7776 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7777                            u16 *opcode, u8 *status,
7778                            hci_req_complete_t *req_complete,
7779                            hci_req_complete_skb_t *req_complete_skb)
7780 {
7781         const struct hci_ev *ev = &hci_ev_table[event];
7782         void *data;
7783
7784         if (!ev->func)
7785                 return;
7786
7787         if (skb->len < ev->min_len) {
7788                 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7789                            event, skb->len, ev->min_len);
7790                 return;
7791         }
7792
7793         /* Just warn if the length is over max_len size it still be
7794          * possible to partially parse the event so leave to callback to
7795          * decide if that is acceptable.
7796          */
7797         if (skb->len > ev->max_len)
7798                 bt_dev_warn_ratelimited(hdev,
7799                                         "unexpected event 0x%2.2x length: %u > %u",
7800                                         event, skb->len, ev->max_len);
7801
7802         data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7803         if (!data)
7804                 return;
7805
7806         if (ev->req)
7807                 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7808                              req_complete_skb);
7809         else
7810                 ev->func(hdev, data, skb);
7811 }
7812
7813 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7814 {
7815         struct hci_event_hdr *hdr = (void *) skb->data;
7816         hci_req_complete_t req_complete = NULL;
7817         hci_req_complete_skb_t req_complete_skb = NULL;
7818         struct sk_buff *orig_skb = NULL;
7819         u8 status = 0, event, req_evt = 0;
7820         u16 opcode = HCI_OP_NOP;
7821
7822         if (skb->len < sizeof(*hdr)) {
7823                 bt_dev_err(hdev, "Malformed HCI Event");
7824                 goto done;
7825         }
7826
7827         kfree_skb(hdev->recv_event);
7828         hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7829
7830         event = hdr->evt;
7831         if (!event) {
7832                 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7833                             event);
7834                 goto done;
7835         }
7836
7837         /* Only match event if command OGF is not for LE */
7838         if (hdev->sent_cmd &&
7839             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7840             hci_skb_event(hdev->sent_cmd) == event) {
7841                 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7842                                      status, &req_complete, &req_complete_skb);
7843                 req_evt = event;
7844         }
7845
7846         /* If it looks like we might end up having to call
7847          * req_complete_skb, store a pristine copy of the skb since the
7848          * various handlers may modify the original one through
7849          * skb_pull() calls, etc.
7850          */
7851         if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7852             event == HCI_EV_CMD_COMPLETE)
7853                 orig_skb = skb_clone(skb, GFP_KERNEL);
7854
7855         skb_pull(skb, HCI_EVENT_HDR_SIZE);
7856
7857         /* Store wake reason if we're suspended */
7858         hci_store_wake_reason(hdev, event, skb);
7859
7860         bt_dev_dbg(hdev, "event 0x%2.2x", event);
7861
7862         hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7863                        &req_complete_skb);
7864
7865         if (req_complete) {
7866                 req_complete(hdev, status, opcode);
7867         } else if (req_complete_skb) {
7868                 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7869                         kfree_skb(orig_skb);
7870                         orig_skb = NULL;
7871                 }
7872                 req_complete_skb(hdev, status, opcode, orig_skb);
7873         }
7874
7875 done:
7876         kfree_skb(orig_skb);
7877         kfree_skb(skb);
7878         hdev->stat.evt_rx++;
7879 }