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 #ifndef TIZEN_BT
1763 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1764                                      u8 bdaddr_type, s8 rssi, u32 flags,
1765                                      u8 *data, u8 len)
1766 {
1767         struct discovery_state *d = &hdev->discovery;
1768
1769         if (len > max_adv_len(hdev))
1770                 return;
1771
1772         bacpy(&d->last_adv_addr, bdaddr);
1773         d->last_adv_addr_type = bdaddr_type;
1774         d->last_adv_rssi = rssi;
1775         d->last_adv_flags = flags;
1776         memcpy(d->last_adv_data, data, len);
1777         d->last_adv_data_len = len;
1778 }
1779 #endif
1780
1781 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1782 {
1783         hci_dev_lock(hdev);
1784
1785         switch (enable) {
1786         case LE_SCAN_ENABLE:
1787                 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1788                 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1789                         clear_pending_adv_report(hdev);
1790                 if (hci_dev_test_flag(hdev, HCI_MESH))
1791                         hci_discovery_set_state(hdev, DISCOVERY_FINDING);
1792                 break;
1793
1794         case LE_SCAN_DISABLE:
1795                 /* We do this here instead of when setting DISCOVERY_STOPPED
1796                  * since the latter would potentially require waiting for
1797                  * inquiry to stop too.
1798                  */
1799                 if (has_pending_adv_report(hdev)) {
1800                         struct discovery_state *d = &hdev->discovery;
1801
1802                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1803                                           d->last_adv_addr_type, NULL,
1804                                           d->last_adv_rssi, d->last_adv_flags,
1805                                           d->last_adv_data,
1806                                           d->last_adv_data_len, NULL, 0, 0);
1807                 }
1808
1809                 /* Cancel this timer so that we don't try to disable scanning
1810                  * when it's already disabled.
1811                  */
1812                 cancel_delayed_work(&hdev->le_scan_disable);
1813
1814                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1815
1816                 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1817                  * interrupted scanning due to a connect request. Mark
1818                  * therefore discovery as stopped.
1819                  */
1820                 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1821 #ifndef TIZEN_BT /* The below line is kernel bug. */
1822                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1823 #else
1824                         hci_le_discovery_set_state(hdev, DISCOVERY_STOPPED);
1825 #endif
1826                 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1827                          hdev->discovery.state == DISCOVERY_FINDING)
1828                         queue_work(hdev->workqueue, &hdev->reenable_adv_work);
1829
1830                 break;
1831
1832         default:
1833                 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1834                            enable);
1835                 break;
1836         }
1837
1838         hci_dev_unlock(hdev);
1839 }
1840
1841 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1842                                     struct sk_buff *skb)
1843 {
1844         struct hci_cp_le_set_scan_enable *cp;
1845         struct hci_ev_status *rp = data;
1846
1847         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1848
1849         if (rp->status)
1850                 return rp->status;
1851
1852         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1853         if (!cp)
1854                 return rp->status;
1855
1856         le_set_scan_enable_complete(hdev, cp->enable);
1857
1858         return rp->status;
1859 }
1860
1861 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1862                                         struct sk_buff *skb)
1863 {
1864         struct hci_cp_le_set_ext_scan_enable *cp;
1865         struct hci_ev_status *rp = data;
1866
1867         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1868
1869         if (rp->status)
1870                 return rp->status;
1871
1872         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1873         if (!cp)
1874                 return rp->status;
1875
1876         le_set_scan_enable_complete(hdev, cp->enable);
1877
1878         return rp->status;
1879 }
1880
1881 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1882                                       struct sk_buff *skb)
1883 {
1884         struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1885
1886         bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1887                    rp->num_of_sets);
1888
1889         if (rp->status)
1890                 return rp->status;
1891
1892         hdev->le_num_of_adv_sets = rp->num_of_sets;
1893
1894         return rp->status;
1895 }
1896
1897 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1898                                           struct sk_buff *skb)
1899 {
1900         struct hci_rp_le_read_accept_list_size *rp = data;
1901
1902         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1903
1904         if (rp->status)
1905                 return rp->status;
1906
1907         hdev->le_accept_list_size = rp->size;
1908
1909         return rp->status;
1910 }
1911
1912 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1913                                       struct sk_buff *skb)
1914 {
1915         struct hci_ev_status *rp = data;
1916
1917         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1918
1919         if (rp->status)
1920                 return rp->status;
1921
1922         hci_dev_lock(hdev);
1923         hci_bdaddr_list_clear(&hdev->le_accept_list);
1924         hci_dev_unlock(hdev);
1925
1926         return rp->status;
1927 }
1928
1929 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1930                                        struct sk_buff *skb)
1931 {
1932         struct hci_cp_le_add_to_accept_list *sent;
1933         struct hci_ev_status *rp = data;
1934
1935         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1936
1937         if (rp->status)
1938                 return rp->status;
1939
1940         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1941         if (!sent)
1942                 return rp->status;
1943
1944         hci_dev_lock(hdev);
1945         hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
1946                             sent->bdaddr_type);
1947         hci_dev_unlock(hdev);
1948
1949         return rp->status;
1950 }
1951
1952 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1953                                          struct sk_buff *skb)
1954 {
1955         struct hci_cp_le_del_from_accept_list *sent;
1956         struct hci_ev_status *rp = data;
1957
1958         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1959
1960         if (rp->status)
1961                 return rp->status;
1962
1963         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1964         if (!sent)
1965                 return rp->status;
1966
1967         hci_dev_lock(hdev);
1968         hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
1969                             sent->bdaddr_type);
1970         hci_dev_unlock(hdev);
1971
1972         return rp->status;
1973 }
1974
1975 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1976                                           struct sk_buff *skb)
1977 {
1978         struct hci_rp_le_read_supported_states *rp = data;
1979
1980         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1981
1982         if (rp->status)
1983                 return rp->status;
1984
1985         memcpy(hdev->le_states, rp->le_states, 8);
1986
1987         return rp->status;
1988 }
1989
1990 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
1991                                       struct sk_buff *skb)
1992 {
1993         struct hci_rp_le_read_def_data_len *rp = data;
1994
1995         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1996
1997         if (rp->status)
1998                 return rp->status;
1999
2000         hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
2001         hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
2002
2003         return rp->status;
2004 }
2005
2006 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
2007                                        struct sk_buff *skb)
2008 {
2009         struct hci_cp_le_write_def_data_len *sent;
2010         struct hci_ev_status *rp = data;
2011
2012         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2013
2014         if (rp->status)
2015                 return rp->status;
2016
2017         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
2018         if (!sent)
2019                 return rp->status;
2020
2021         hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
2022         hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
2023
2024         return rp->status;
2025 }
2026
2027 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
2028                                        struct sk_buff *skb)
2029 {
2030         struct hci_cp_le_add_to_resolv_list *sent;
2031         struct hci_ev_status *rp = data;
2032
2033         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2034
2035         if (rp->status)
2036                 return rp->status;
2037
2038         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
2039         if (!sent)
2040                 return rp->status;
2041
2042         hci_dev_lock(hdev);
2043         hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2044                                 sent->bdaddr_type, sent->peer_irk,
2045                                 sent->local_irk);
2046         hci_dev_unlock(hdev);
2047
2048         return rp->status;
2049 }
2050
2051 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
2052                                          struct sk_buff *skb)
2053 {
2054         struct hci_cp_le_del_from_resolv_list *sent;
2055         struct hci_ev_status *rp = data;
2056
2057         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2058
2059         if (rp->status)
2060                 return rp->status;
2061
2062         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
2063         if (!sent)
2064                 return rp->status;
2065
2066         hci_dev_lock(hdev);
2067         hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2068                             sent->bdaddr_type);
2069         hci_dev_unlock(hdev);
2070
2071         return rp->status;
2072 }
2073
2074 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2075                                       struct sk_buff *skb)
2076 {
2077         struct hci_ev_status *rp = data;
2078
2079         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2080
2081         if (rp->status)
2082                 return rp->status;
2083
2084         hci_dev_lock(hdev);
2085         hci_bdaddr_list_clear(&hdev->le_resolv_list);
2086         hci_dev_unlock(hdev);
2087
2088         return rp->status;
2089 }
2090
2091 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2092                                           struct sk_buff *skb)
2093 {
2094         struct hci_rp_le_read_resolv_list_size *rp = data;
2095
2096         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2097
2098         if (rp->status)
2099                 return rp->status;
2100
2101         hdev->le_resolv_list_size = rp->size;
2102
2103         return rp->status;
2104 }
2105
2106 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2107                                                struct sk_buff *skb)
2108 {
2109         struct hci_ev_status *rp = data;
2110         __u8 *sent;
2111
2112         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2113
2114         if (rp->status)
2115                 return rp->status;
2116
2117         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2118         if (!sent)
2119                 return rp->status;
2120
2121         hci_dev_lock(hdev);
2122
2123         if (*sent)
2124                 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2125         else
2126                 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2127
2128         hci_dev_unlock(hdev);
2129
2130         return rp->status;
2131 }
2132
2133 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2134                                       struct sk_buff *skb)
2135 {
2136         struct hci_rp_le_read_max_data_len *rp = data;
2137
2138         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2139
2140         if (rp->status)
2141                 return rp->status;
2142
2143         hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2144         hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2145         hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2146         hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2147
2148         return rp->status;
2149 }
2150
2151 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2152                                          struct sk_buff *skb)
2153 {
2154         struct hci_cp_write_le_host_supported *sent;
2155         struct hci_ev_status *rp = data;
2156
2157         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2158
2159         if (rp->status)
2160                 return rp->status;
2161
2162         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2163         if (!sent)
2164                 return rp->status;
2165
2166         hci_dev_lock(hdev);
2167
2168         if (sent->le) {
2169                 hdev->features[1][0] |= LMP_HOST_LE;
2170                 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2171         } else {
2172                 hdev->features[1][0] &= ~LMP_HOST_LE;
2173                 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2174                 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2175         }
2176
2177         if (sent->simul)
2178                 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2179         else
2180                 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2181
2182         hci_dev_unlock(hdev);
2183
2184         return rp->status;
2185 }
2186
2187 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2188                                struct sk_buff *skb)
2189 {
2190         struct hci_cp_le_set_adv_param *cp;
2191         struct hci_ev_status *rp = data;
2192
2193         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2194
2195         if (rp->status)
2196                 return rp->status;
2197
2198         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2199         if (!cp)
2200                 return rp->status;
2201
2202         hci_dev_lock(hdev);
2203         hdev->adv_addr_type = cp->own_address_type;
2204         hci_dev_unlock(hdev);
2205
2206         return rp->status;
2207 }
2208
2209 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2210                                    struct sk_buff *skb)
2211 {
2212         struct hci_rp_le_set_ext_adv_params *rp = data;
2213         struct hci_cp_le_set_ext_adv_params *cp;
2214         struct adv_info *adv_instance;
2215
2216         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2217
2218         if (rp->status)
2219                 return rp->status;
2220
2221         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2222         if (!cp)
2223                 return rp->status;
2224
2225         hci_dev_lock(hdev);
2226         hdev->adv_addr_type = cp->own_addr_type;
2227         if (!cp->handle) {
2228                 /* Store in hdev for instance 0 */
2229                 hdev->adv_tx_power = rp->tx_power;
2230         } else {
2231                 adv_instance = hci_find_adv_instance(hdev, cp->handle);
2232                 if (adv_instance)
2233                         adv_instance->tx_power = rp->tx_power;
2234         }
2235         /* Update adv data as tx power is known now */
2236         hci_update_adv_data(hdev, cp->handle);
2237
2238         hci_dev_unlock(hdev);
2239
2240         return rp->status;
2241 }
2242
2243 #ifdef TIZEN_BT
2244 static u8 hci_cc_enable_rssi(struct hci_dev *hdev, void *data,
2245                              struct sk_buff *skb)
2246 {
2247         struct hci_cc_rsp_enable_rssi *rp = data;
2248
2249         BT_DBG("hci_cc_enable_rssi - %s status 0x%2.2x Event_LE_ext_Opcode 0x%2.2x",
2250                hdev->name, rp->status, rp->le_ext_opcode);
2251
2252         mgmt_enable_rssi_cc(hdev, rp, rp->status);
2253
2254         return rp->status;
2255 }
2256
2257 static u8 hci_cc_get_raw_rssi(struct hci_dev *hdev, void *data,
2258                               struct sk_buff *skb)
2259 {
2260         struct hci_cc_rp_get_raw_rssi *rp = data;
2261
2262         BT_DBG("hci_cc_get_raw_rssi- %s Get Raw Rssi Response[%2.2x %4.4x %2.2X]",
2263                hdev->name, rp->status, rp->conn_handle, rp->rssi_dbm);
2264
2265         mgmt_raw_rssi_response(hdev, rp, rp->status);
2266
2267         return rp->status;
2268 }
2269
2270 static void hci_vendor_ext_rssi_link_alert_evt(struct hci_dev *hdev,
2271                                                struct sk_buff *skb)
2272 {
2273         struct hci_ev_vendor_specific_rssi_alert *ev = (void *)skb->data;
2274
2275         BT_DBG("RSSI event LE_RSSI_LINK_ALERT %X", LE_RSSI_LINK_ALERT);
2276
2277         mgmt_rssi_alert_evt(hdev, ev->conn_handle, ev->alert_type,
2278                             ev->rssi_dbm);
2279 }
2280
2281 static void hci_vendor_specific_group_ext_evt(struct hci_dev *hdev,
2282                                               struct sk_buff *skb)
2283 {
2284         struct hci_ev_ext_vendor_specific *ev = (void *)skb->data;
2285         __u8 event_le_ext_sub_code;
2286
2287         BT_DBG("RSSI event LE_META_VENDOR_SPECIFIC_GROUP_EVENT: %X",
2288                LE_META_VENDOR_SPECIFIC_GROUP_EVENT);
2289
2290         skb_pull(skb, sizeof(*ev));
2291         event_le_ext_sub_code = ev->event_le_ext_sub_code;
2292
2293         switch (event_le_ext_sub_code) {
2294         case LE_RSSI_LINK_ALERT:
2295                 hci_vendor_ext_rssi_link_alert_evt(hdev, skb);
2296                 break;
2297
2298         default:
2299                 break;
2300         }
2301 }
2302
2303 static void hci_vendor_multi_adv_state_change_evt(struct hci_dev *hdev,
2304                                                   struct sk_buff *skb)
2305 {
2306         struct hci_ev_vendor_specific_multi_adv_state *ev = (void *)skb->data;
2307
2308         BT_DBG("LE_MULTI_ADV_STATE_CHANGE_SUB_EVENT");
2309
2310         mgmt_multi_adv_state_change_evt(hdev, ev->adv_instance,
2311                                         ev->state_change_reason,
2312                                         ev->connection_handle);
2313 }
2314
2315 static void hci_vendor_specific_evt(struct hci_dev *hdev, void *data,
2316                                     struct sk_buff *skb)
2317 {
2318         struct hci_ev_vendor_specific *ev = (void *)skb->data;
2319         __u8 event_sub_code;
2320
2321         BT_DBG("hci_vendor_specific_evt");
2322
2323         skb_pull(skb, sizeof(*ev));
2324         event_sub_code = ev->event_sub_code;
2325
2326         switch (event_sub_code) {
2327         case LE_META_VENDOR_SPECIFIC_GROUP_EVENT:
2328                 hci_vendor_specific_group_ext_evt(hdev, skb);
2329                 break;
2330
2331         case LE_MULTI_ADV_STATE_CHANGE_SUB_EVENT:
2332                 hci_vendor_multi_adv_state_change_evt(hdev, skb);
2333                 break;
2334
2335         default:
2336                 break;
2337         }
2338 }
2339 #endif
2340
2341 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2342                            struct sk_buff *skb)
2343 {
2344         struct hci_rp_read_rssi *rp = data;
2345         struct hci_conn *conn;
2346
2347         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2348
2349         if (rp->status)
2350                 return rp->status;
2351
2352         hci_dev_lock(hdev);
2353
2354         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2355         if (conn)
2356                 conn->rssi = rp->rssi;
2357
2358         hci_dev_unlock(hdev);
2359
2360         return rp->status;
2361 }
2362
2363 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2364                                struct sk_buff *skb)
2365 {
2366         struct hci_cp_read_tx_power *sent;
2367         struct hci_rp_read_tx_power *rp = data;
2368         struct hci_conn *conn;
2369
2370         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2371
2372         if (rp->status)
2373                 return rp->status;
2374
2375         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2376         if (!sent)
2377                 return rp->status;
2378
2379         hci_dev_lock(hdev);
2380
2381         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2382         if (!conn)
2383                 goto unlock;
2384
2385         switch (sent->type) {
2386         case 0x00:
2387                 conn->tx_power = rp->tx_power;
2388                 break;
2389         case 0x01:
2390                 conn->max_tx_power = rp->tx_power;
2391                 break;
2392         }
2393
2394 unlock:
2395         hci_dev_unlock(hdev);
2396         return rp->status;
2397 }
2398
2399 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2400                                       struct sk_buff *skb)
2401 {
2402         struct hci_ev_status *rp = data;
2403         u8 *mode;
2404
2405         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2406
2407         if (rp->status)
2408                 return rp->status;
2409
2410         mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2411         if (mode)
2412                 hdev->ssp_debug_mode = *mode;
2413
2414         return rp->status;
2415 }
2416
2417 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2418 {
2419         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2420
2421         if (status) {
2422                 hci_conn_check_pending(hdev);
2423                 return;
2424         }
2425
2426         if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY))
2427                 set_bit(HCI_INQUIRY, &hdev->flags);
2428 }
2429
2430 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2431 {
2432         struct hci_cp_create_conn *cp;
2433         struct hci_conn *conn;
2434
2435         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2436
2437         cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2438         if (!cp)
2439                 return;
2440
2441         hci_dev_lock(hdev);
2442
2443         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2444
2445         bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2446
2447         if (status) {
2448                 if (conn && conn->state == BT_CONNECT) {
2449                         if (status != 0x0c || conn->attempt > 2) {
2450                                 conn->state = BT_CLOSED;
2451                                 hci_connect_cfm(conn, status);
2452                                 hci_conn_del(conn);
2453                         } else
2454                                 conn->state = BT_CONNECT2;
2455                 }
2456         } else {
2457                 if (!conn) {
2458                         conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr,
2459                                                   HCI_ROLE_MASTER);
2460                         if (!conn)
2461                                 bt_dev_err(hdev, "no memory for new connection");
2462                 }
2463         }
2464
2465         hci_dev_unlock(hdev);
2466 }
2467
2468 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2469 {
2470         struct hci_cp_add_sco *cp;
2471         struct hci_conn *acl;
2472         struct hci_link *link;
2473         __u16 handle;
2474
2475         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2476
2477         if (!status)
2478                 return;
2479
2480         cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2481         if (!cp)
2482                 return;
2483
2484         handle = __le16_to_cpu(cp->handle);
2485
2486         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2487
2488         hci_dev_lock(hdev);
2489
2490         acl = hci_conn_hash_lookup_handle(hdev, handle);
2491         if (acl) {
2492                 link = list_first_entry_or_null(&acl->link_list,
2493                                                 struct hci_link, list);
2494                 if (link && link->conn) {
2495                         link->conn->state = BT_CLOSED;
2496
2497                         hci_connect_cfm(link->conn, status);
2498                         hci_conn_del(link->conn);
2499                 }
2500         }
2501
2502         hci_dev_unlock(hdev);
2503 }
2504
2505 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2506 {
2507         struct hci_cp_auth_requested *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_AUTH_REQUESTED);
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 void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2533 {
2534         struct hci_cp_set_conn_encrypt *cp;
2535         struct hci_conn *conn;
2536
2537         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2538
2539         if (!status)
2540                 return;
2541
2542         cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2543         if (!cp)
2544                 return;
2545
2546         hci_dev_lock(hdev);
2547
2548         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2549         if (conn) {
2550                 if (conn->state == BT_CONFIG) {
2551                         hci_connect_cfm(conn, status);
2552                         hci_conn_drop(conn);
2553                 }
2554         }
2555
2556         hci_dev_unlock(hdev);
2557 }
2558
2559 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2560                                     struct hci_conn *conn)
2561 {
2562         if (conn->state != BT_CONFIG || !conn->out)
2563                 return 0;
2564
2565         if (conn->pending_sec_level == BT_SECURITY_SDP)
2566                 return 0;
2567
2568         /* Only request authentication for SSP connections or non-SSP
2569          * devices with sec_level MEDIUM or HIGH or if MITM protection
2570          * is requested.
2571          */
2572         if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2573             conn->pending_sec_level != BT_SECURITY_FIPS &&
2574             conn->pending_sec_level != BT_SECURITY_HIGH &&
2575             conn->pending_sec_level != BT_SECURITY_MEDIUM)
2576                 return 0;
2577
2578         return 1;
2579 }
2580
2581 static int hci_resolve_name(struct hci_dev *hdev,
2582                                    struct inquiry_entry *e)
2583 {
2584         struct hci_cp_remote_name_req cp;
2585
2586         memset(&cp, 0, sizeof(cp));
2587
2588         bacpy(&cp.bdaddr, &e->data.bdaddr);
2589         cp.pscan_rep_mode = e->data.pscan_rep_mode;
2590         cp.pscan_mode = e->data.pscan_mode;
2591         cp.clock_offset = e->data.clock_offset;
2592
2593         return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2594 }
2595
2596 static bool hci_resolve_next_name(struct hci_dev *hdev)
2597 {
2598         struct discovery_state *discov = &hdev->discovery;
2599         struct inquiry_entry *e;
2600
2601         if (list_empty(&discov->resolve))
2602                 return false;
2603
2604         /* We should stop if we already spent too much time resolving names. */
2605         if (time_after(jiffies, discov->name_resolve_timeout)) {
2606                 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2607                 return false;
2608         }
2609
2610         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2611         if (!e)
2612                 return false;
2613
2614         if (hci_resolve_name(hdev, e) == 0) {
2615                 e->name_state = NAME_PENDING;
2616                 return true;
2617         }
2618
2619         return false;
2620 }
2621
2622 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2623                                    bdaddr_t *bdaddr, u8 *name, u8 name_len)
2624 {
2625         struct discovery_state *discov = &hdev->discovery;
2626         struct inquiry_entry *e;
2627
2628 #ifdef TIZEN_BT
2629         /* Update the mgmt connected state if necessary. Be careful with
2630          * conn objects that exist but are not (yet) connected however.
2631          * Only those in BT_CONFIG or BT_CONNECTED states can be
2632          * considered connected.
2633          */
2634         if (conn &&
2635             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) {
2636                 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2637                         mgmt_device_connected(hdev, conn, name, name_len);
2638                 else
2639                         mgmt_device_name_update(hdev, bdaddr, name, name_len);
2640         }
2641 #else
2642         if (conn &&
2643             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2644             !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2645                 mgmt_device_connected(hdev, conn, name, name_len);
2646 #endif
2647
2648         if (discov->state == DISCOVERY_STOPPED)
2649                 return;
2650
2651         if (discov->state == DISCOVERY_STOPPING)
2652                 goto discov_complete;
2653
2654         if (discov->state != DISCOVERY_RESOLVING)
2655                 return;
2656
2657         e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2658         /* If the device was not found in a list of found devices names of which
2659          * are pending. there is no need to continue resolving a next name as it
2660          * will be done upon receiving another Remote Name Request Complete
2661          * Event */
2662         if (!e)
2663                 return;
2664
2665         list_del(&e->list);
2666
2667         e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2668         mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2669                          name, name_len);
2670
2671         if (hci_resolve_next_name(hdev))
2672                 return;
2673
2674 discov_complete:
2675         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2676 }
2677
2678 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2679 {
2680         struct hci_cp_remote_name_req *cp;
2681         struct hci_conn *conn;
2682
2683         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2684
2685         /* If successful wait for the name req complete event before
2686          * checking for the need to do authentication */
2687         if (!status)
2688                 return;
2689
2690         cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2691         if (!cp)
2692                 return;
2693
2694         hci_dev_lock(hdev);
2695
2696         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2697
2698         if (hci_dev_test_flag(hdev, HCI_MGMT))
2699                 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2700
2701         if (!conn)
2702                 goto unlock;
2703
2704         if (!hci_outgoing_auth_needed(hdev, conn))
2705                 goto unlock;
2706
2707         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2708                 struct hci_cp_auth_requested auth_cp;
2709
2710                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2711
2712                 auth_cp.handle = __cpu_to_le16(conn->handle);
2713                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2714                              sizeof(auth_cp), &auth_cp);
2715         }
2716
2717 unlock:
2718         hci_dev_unlock(hdev);
2719 }
2720
2721 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2722 {
2723         struct hci_cp_read_remote_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_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_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2749 {
2750         struct hci_cp_read_remote_ext_features *cp;
2751         struct hci_conn *conn;
2752
2753         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2754
2755         if (!status)
2756                 return;
2757
2758         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2759         if (!cp)
2760                 return;
2761
2762         hci_dev_lock(hdev);
2763
2764         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2765         if (conn) {
2766                 if (conn->state == BT_CONFIG) {
2767                         hci_connect_cfm(conn, status);
2768                         hci_conn_drop(conn);
2769                 }
2770         }
2771
2772         hci_dev_unlock(hdev);
2773 }
2774
2775 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle,
2776                                        __u8 status)
2777 {
2778         struct hci_conn *acl;
2779         struct hci_link *link;
2780
2781         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status);
2782
2783         hci_dev_lock(hdev);
2784
2785         acl = hci_conn_hash_lookup_handle(hdev, handle);
2786         if (acl) {
2787                 link = list_first_entry_or_null(&acl->link_list,
2788                                                 struct hci_link, list);
2789                 if (link && link->conn) {
2790                         link->conn->state = BT_CLOSED;
2791
2792                         hci_connect_cfm(link->conn, status);
2793                         hci_conn_del(link->conn);
2794                 }
2795         }
2796
2797         hci_dev_unlock(hdev);
2798 }
2799
2800 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2801 {
2802         struct hci_cp_setup_sync_conn *cp;
2803
2804         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2805
2806         if (!status)
2807                 return;
2808
2809         cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2810         if (!cp)
2811                 return;
2812
2813         hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2814 }
2815
2816 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2817 {
2818         struct hci_cp_enhanced_setup_sync_conn *cp;
2819
2820         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2821
2822         if (!status)
2823                 return;
2824
2825         cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2826         if (!cp)
2827                 return;
2828
2829         hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2830 }
2831
2832 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2833 {
2834         struct hci_cp_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_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_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2860 {
2861         struct hci_cp_exit_sniff_mode *cp;
2862         struct hci_conn *conn;
2863
2864         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2865
2866         if (!status)
2867                 return;
2868
2869         cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2870         if (!cp)
2871                 return;
2872
2873         hci_dev_lock(hdev);
2874
2875         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2876         if (conn) {
2877                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2878
2879                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2880                         hci_sco_setup(conn, status);
2881         }
2882
2883         hci_dev_unlock(hdev);
2884 }
2885
2886 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2887 {
2888         struct hci_cp_disconnect *cp;
2889         struct hci_conn_params *params;
2890         struct hci_conn *conn;
2891         bool mgmt_conn;
2892
2893         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2894
2895         /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2896          * otherwise cleanup the connection immediately.
2897          */
2898         if (!status && !hdev->suspended)
2899                 return;
2900
2901         cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2902         if (!cp)
2903                 return;
2904
2905         hci_dev_lock(hdev);
2906
2907         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2908         if (!conn)
2909                 goto unlock;
2910
2911         if (status) {
2912                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2913                                        conn->dst_type, status);
2914
2915                 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2916                         hdev->cur_adv_instance = conn->adv_instance;
2917                         hci_enable_advertising(hdev);
2918                 }
2919
2920                 /* Inform sockets conn is gone before we delete it */
2921                 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED);
2922
2923                 goto done;
2924         }
2925
2926         mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2927
2928         if (conn->type == ACL_LINK) {
2929                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2930                         hci_remove_link_key(hdev, &conn->dst);
2931         }
2932
2933         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2934         if (params) {
2935                 switch (params->auto_connect) {
2936                 case HCI_AUTO_CONN_LINK_LOSS:
2937                         if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2938                                 break;
2939                         fallthrough;
2940
2941                 case HCI_AUTO_CONN_DIRECT:
2942                 case HCI_AUTO_CONN_ALWAYS:
2943                         hci_pend_le_list_del_init(params);
2944                         hci_pend_le_list_add(params, &hdev->pend_le_conns);
2945                         break;
2946
2947                 default:
2948                         break;
2949                 }
2950         }
2951
2952         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2953                                  cp->reason, mgmt_conn);
2954
2955         hci_disconn_cfm(conn, cp->reason);
2956
2957 done:
2958         /* If the disconnection failed for any reason, the upper layer
2959          * does not retry to disconnect in current implementation.
2960          * Hence, we need to do some basic cleanup here and re-enable
2961          * advertising if necessary.
2962          */
2963         hci_conn_del(conn);
2964 unlock:
2965         hci_dev_unlock(hdev);
2966 }
2967
2968 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
2969 {
2970         /* When using controller based address resolution, then the new
2971          * address types 0x02 and 0x03 are used. These types need to be
2972          * converted back into either public address or random address type
2973          */
2974         switch (type) {
2975         case ADDR_LE_DEV_PUBLIC_RESOLVED:
2976                 if (resolved)
2977                         *resolved = true;
2978                 return ADDR_LE_DEV_PUBLIC;
2979         case ADDR_LE_DEV_RANDOM_RESOLVED:
2980                 if (resolved)
2981                         *resolved = true;
2982                 return ADDR_LE_DEV_RANDOM;
2983         }
2984
2985         if (resolved)
2986                 *resolved = false;
2987         return type;
2988 }
2989
2990 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2991                               u8 peer_addr_type, u8 own_address_type,
2992                               u8 filter_policy)
2993 {
2994         struct hci_conn *conn;
2995
2996         conn = hci_conn_hash_lookup_le(hdev, peer_addr,
2997                                        peer_addr_type);
2998         if (!conn)
2999                 return;
3000
3001         own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
3002
3003         /* Store the initiator and responder address information which
3004          * is needed for SMP. These values will not change during the
3005          * lifetime of the connection.
3006          */
3007         conn->init_addr_type = own_address_type;
3008         if (own_address_type == ADDR_LE_DEV_RANDOM)
3009                 bacpy(&conn->init_addr, &hdev->random_addr);
3010         else
3011                 bacpy(&conn->init_addr, &hdev->bdaddr);
3012
3013         conn->resp_addr_type = peer_addr_type;
3014         bacpy(&conn->resp_addr, peer_addr);
3015 }
3016
3017 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
3018 {
3019         struct hci_cp_le_create_conn *cp;
3020
3021         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3022
3023         /* All connection failure handling is taken care of by the
3024          * hci_conn_failed function which is triggered by the HCI
3025          * request completion callbacks used for connecting.
3026          */
3027         if (status)
3028                 return;
3029
3030         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
3031         if (!cp)
3032                 return;
3033
3034         hci_dev_lock(hdev);
3035
3036         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
3037                           cp->own_address_type, cp->filter_policy);
3038
3039         hci_dev_unlock(hdev);
3040 }
3041
3042 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
3043 {
3044         struct hci_cp_le_ext_create_conn *cp;
3045
3046         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3047
3048         /* All connection failure handling is taken care of by the
3049          * hci_conn_failed function which is triggered by the HCI
3050          * request completion callbacks used for connecting.
3051          */
3052         if (status)
3053                 return;
3054
3055         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
3056         if (!cp)
3057                 return;
3058
3059         hci_dev_lock(hdev);
3060
3061         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
3062                           cp->own_addr_type, cp->filter_policy);
3063
3064         hci_dev_unlock(hdev);
3065 }
3066
3067 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
3068 {
3069         struct hci_cp_le_read_remote_features *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         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
3078         if (!cp)
3079                 return;
3080
3081         hci_dev_lock(hdev);
3082
3083         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3084         if (conn) {
3085                 if (conn->state == BT_CONFIG) {
3086                         hci_connect_cfm(conn, status);
3087                         hci_conn_drop(conn);
3088                 }
3089         }
3090
3091         hci_dev_unlock(hdev);
3092 }
3093
3094 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
3095 {
3096         struct hci_cp_le_start_enc *cp;
3097         struct hci_conn *conn;
3098
3099         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3100
3101         if (!status)
3102                 return;
3103
3104         hci_dev_lock(hdev);
3105
3106         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
3107         if (!cp)
3108                 goto unlock;
3109
3110         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3111         if (!conn)
3112                 goto unlock;
3113
3114         if (conn->state != BT_CONNECTED)
3115                 goto unlock;
3116
3117         hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3118         hci_conn_drop(conn);
3119
3120 unlock:
3121         hci_dev_unlock(hdev);
3122 }
3123
3124 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
3125 {
3126         struct hci_cp_switch_role *cp;
3127         struct hci_conn *conn;
3128
3129         BT_DBG("%s status 0x%2.2x", hdev->name, status);
3130
3131         if (!status)
3132                 return;
3133
3134         cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3135         if (!cp)
3136                 return;
3137
3138         hci_dev_lock(hdev);
3139
3140         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3141         if (conn)
3142                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3143
3144         hci_dev_unlock(hdev);
3145 }
3146
3147 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3148                                      struct sk_buff *skb)
3149 {
3150         struct hci_ev_status *ev = data;
3151         struct discovery_state *discov = &hdev->discovery;
3152         struct inquiry_entry *e;
3153
3154         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3155
3156         hci_conn_check_pending(hdev);
3157
3158         if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3159                 return;
3160
3161         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3162         wake_up_bit(&hdev->flags, HCI_INQUIRY);
3163
3164         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3165                 return;
3166
3167         hci_dev_lock(hdev);
3168
3169         if (discov->state != DISCOVERY_FINDING)
3170                 goto unlock;
3171
3172         if (list_empty(&discov->resolve)) {
3173                 /* When BR/EDR inquiry is active and no LE scanning is in
3174                  * progress, then change discovery state to indicate completion.
3175                  *
3176                  * When running LE scanning and BR/EDR inquiry simultaneously
3177                  * and the LE scan already finished, then change the discovery
3178                  * state to indicate completion.
3179                  */
3180                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3181                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3182                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3183                 goto unlock;
3184         }
3185
3186         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3187         if (e && hci_resolve_name(hdev, e) == 0) {
3188                 e->name_state = NAME_PENDING;
3189                 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3190                 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3191         } else {
3192                 /* When BR/EDR inquiry is active and no LE scanning is in
3193                  * progress, then change discovery state to indicate completion.
3194                  *
3195                  * When running LE scanning and BR/EDR inquiry simultaneously
3196                  * and the LE scan already finished, then change the discovery
3197                  * state to indicate completion.
3198                  */
3199                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3200                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3201                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3202         }
3203
3204 unlock:
3205         hci_dev_unlock(hdev);
3206 }
3207
3208 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3209                                    struct sk_buff *skb)
3210 {
3211         struct hci_ev_inquiry_result *ev = edata;
3212         struct inquiry_data data;
3213         int i;
3214
3215         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3216                              flex_array_size(ev, info, ev->num)))
3217                 return;
3218
3219         bt_dev_dbg(hdev, "num %d", ev->num);
3220
3221         if (!ev->num)
3222                 return;
3223
3224         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3225                 return;
3226
3227         hci_dev_lock(hdev);
3228
3229         for (i = 0; i < ev->num; i++) {
3230                 struct inquiry_info *info = &ev->info[i];
3231                 u32 flags;
3232
3233                 bacpy(&data.bdaddr, &info->bdaddr);
3234                 data.pscan_rep_mode     = info->pscan_rep_mode;
3235                 data.pscan_period_mode  = info->pscan_period_mode;
3236                 data.pscan_mode         = info->pscan_mode;
3237                 memcpy(data.dev_class, info->dev_class, 3);
3238                 data.clock_offset       = info->clock_offset;
3239                 data.rssi               = HCI_RSSI_INVALID;
3240                 data.ssp_mode           = 0x00;
3241
3242                 flags = hci_inquiry_cache_update(hdev, &data, false);
3243
3244                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3245                                   info->dev_class, HCI_RSSI_INVALID,
3246                                   flags, NULL, 0, NULL, 0, 0);
3247         }
3248
3249         hci_dev_unlock(hdev);
3250 }
3251
3252 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3253                                   struct sk_buff *skb)
3254 {
3255         struct hci_ev_conn_complete *ev = data;
3256         struct hci_conn *conn;
3257         u8 status = ev->status;
3258
3259         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3260
3261         hci_dev_lock(hdev);
3262
3263         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3264         if (!conn) {
3265                 /* In case of error status and there is no connection pending
3266                  * just unlock as there is nothing to cleanup.
3267                  */
3268                 if (ev->status)
3269                         goto unlock;
3270
3271                 /* Connection may not exist if auto-connected. Check the bredr
3272                  * allowlist to see if this device is allowed to auto connect.
3273                  * If link is an ACL type, create a connection class
3274                  * automatically.
3275                  *
3276                  * Auto-connect will only occur if the event filter is
3277                  * programmed with a given address. Right now, event filter is
3278                  * only used during suspend.
3279                  */
3280                 if (ev->link_type == ACL_LINK &&
3281                     hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3282                                                       &ev->bdaddr,
3283                                                       BDADDR_BREDR)) {
3284                         conn = hci_conn_add_unset(hdev, ev->link_type,
3285                                                   &ev->bdaddr, HCI_ROLE_SLAVE);
3286                         if (!conn) {
3287                                 bt_dev_err(hdev, "no memory for new conn");
3288                                 goto unlock;
3289                         }
3290                 } else {
3291                         if (ev->link_type != SCO_LINK)
3292                                 goto unlock;
3293
3294                         conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3295                                                        &ev->bdaddr);
3296                         if (!conn)
3297                                 goto unlock;
3298
3299                         conn->type = SCO_LINK;
3300                 }
3301         }
3302
3303         /* The HCI_Connection_Complete event is only sent once per connection.
3304          * Processing it more than once per connection can corrupt kernel memory.
3305          *
3306          * As the connection handle is set here for the first time, it indicates
3307          * whether the connection is already set up.
3308          */
3309         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
3310                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3311                 goto unlock;
3312         }
3313
3314         if (!status) {
3315                 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
3316                 if (status)
3317                         goto done;
3318
3319                 if (conn->type == ACL_LINK) {
3320                         conn->state = BT_CONFIG;
3321                         hci_conn_hold(conn);
3322
3323                         if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3324                             !hci_find_link_key(hdev, &ev->bdaddr))
3325                                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3326                         else
3327                                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3328                 } else
3329                         conn->state = BT_CONNECTED;
3330
3331                 hci_debugfs_create_conn(conn);
3332                 hci_conn_add_sysfs(conn);
3333
3334                 if (test_bit(HCI_AUTH, &hdev->flags))
3335                         set_bit(HCI_CONN_AUTH, &conn->flags);
3336
3337                 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3338                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3339
3340                 /* Get remote features */
3341                 if (conn->type == ACL_LINK) {
3342                         struct hci_cp_read_remote_features cp;
3343                         cp.handle = ev->handle;
3344                         hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3345                                      sizeof(cp), &cp);
3346
3347                         hci_update_scan(hdev);
3348                 }
3349
3350                 /* Set packet type for incoming connection */
3351                 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3352                         struct hci_cp_change_conn_ptype cp;
3353                         cp.handle = ev->handle;
3354                         cp.pkt_type = cpu_to_le16(conn->pkt_type);
3355                         hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3356                                      &cp);
3357                 }
3358         }
3359
3360         if (conn->type == ACL_LINK)
3361                 hci_sco_setup(conn, ev->status);
3362
3363 done:
3364         if (status) {
3365                 hci_conn_failed(conn, status);
3366         } else if (ev->link_type == SCO_LINK) {
3367                 switch (conn->setting & SCO_AIRMODE_MASK) {
3368                 case SCO_AIRMODE_CVSD:
3369                         if (hdev->notify)
3370                                 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3371                         break;
3372                 }
3373
3374                 hci_connect_cfm(conn, status);
3375         }
3376
3377 unlock:
3378         hci_dev_unlock(hdev);
3379
3380         hci_conn_check_pending(hdev);
3381 }
3382
3383 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3384 {
3385         struct hci_cp_reject_conn_req cp;
3386
3387         bacpy(&cp.bdaddr, bdaddr);
3388         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3389         hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3390 }
3391
3392 static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3393                                  struct sk_buff *skb)
3394 {
3395         struct hci_ev_conn_request *ev = data;
3396         int mask = hdev->link_mode;
3397         struct inquiry_entry *ie;
3398         struct hci_conn *conn;
3399         __u8 flags = 0;
3400
3401         bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3402
3403         /* Reject incoming connection from device with same BD ADDR against
3404          * CVE-2020-26555
3405          */
3406         if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) {
3407                 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n",
3408                            &ev->bdaddr);
3409                 hci_reject_conn(hdev, &ev->bdaddr);
3410                 return;
3411         }
3412
3413         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3414                                       &flags);
3415
3416         if (!(mask & HCI_LM_ACCEPT)) {
3417                 hci_reject_conn(hdev, &ev->bdaddr);
3418                 return;
3419         }
3420
3421         hci_dev_lock(hdev);
3422
3423         if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3424                                    BDADDR_BREDR)) {
3425                 hci_reject_conn(hdev, &ev->bdaddr);
3426                 goto unlock;
3427         }
3428
3429         /* Require HCI_CONNECTABLE or an accept list entry to accept the
3430          * connection. These features are only touched through mgmt so
3431          * only do the checks if HCI_MGMT is set.
3432          */
3433         if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3434             !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3435             !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3436                                                BDADDR_BREDR)) {
3437                 hci_reject_conn(hdev, &ev->bdaddr);
3438                 goto unlock;
3439         }
3440
3441         /* Connection accepted */
3442
3443         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3444         if (ie)
3445                 memcpy(ie->data.dev_class, ev->dev_class, 3);
3446
3447         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3448                         &ev->bdaddr);
3449         if (!conn) {
3450                 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr,
3451                                           HCI_ROLE_SLAVE);
3452                 if (!conn) {
3453                         bt_dev_err(hdev, "no memory for new connection");
3454                         goto unlock;
3455                 }
3456         }
3457
3458         memcpy(conn->dev_class, ev->dev_class, 3);
3459
3460         hci_dev_unlock(hdev);
3461
3462         if (ev->link_type == ACL_LINK ||
3463             (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3464                 struct hci_cp_accept_conn_req cp;
3465                 conn->state = BT_CONNECT;
3466
3467                 bacpy(&cp.bdaddr, &ev->bdaddr);
3468
3469                 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3470                         cp.role = 0x00; /* Become central */
3471                 else
3472                         cp.role = 0x01; /* Remain peripheral */
3473
3474                 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3475         } else if (!(flags & HCI_PROTO_DEFER)) {
3476                 struct hci_cp_accept_sync_conn_req cp;
3477                 conn->state = BT_CONNECT;
3478
3479                 bacpy(&cp.bdaddr, &ev->bdaddr);
3480                 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3481
3482                 cp.tx_bandwidth   = cpu_to_le32(0x00001f40);
3483                 cp.rx_bandwidth   = cpu_to_le32(0x00001f40);
3484                 cp.max_latency    = cpu_to_le16(0xffff);
3485                 cp.content_format = cpu_to_le16(hdev->voice_setting);
3486                 cp.retrans_effort = 0xff;
3487
3488                 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3489                              &cp);
3490         } else {
3491                 conn->state = BT_CONNECT2;
3492                 hci_connect_cfm(conn, 0);
3493         }
3494
3495         return;
3496 unlock:
3497         hci_dev_unlock(hdev);
3498 }
3499
3500 static u8 hci_to_mgmt_reason(u8 err)
3501 {
3502         switch (err) {
3503         case HCI_ERROR_CONNECTION_TIMEOUT:
3504                 return MGMT_DEV_DISCONN_TIMEOUT;
3505         case HCI_ERROR_REMOTE_USER_TERM:
3506         case HCI_ERROR_REMOTE_LOW_RESOURCES:
3507         case HCI_ERROR_REMOTE_POWER_OFF:
3508                 return MGMT_DEV_DISCONN_REMOTE;
3509         case HCI_ERROR_LOCAL_HOST_TERM:
3510                 return MGMT_DEV_DISCONN_LOCAL_HOST;
3511         default:
3512                 return MGMT_DEV_DISCONN_UNKNOWN;
3513         }
3514 }
3515
3516 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3517                                      struct sk_buff *skb)
3518 {
3519         struct hci_ev_disconn_complete *ev = data;
3520         u8 reason;
3521         struct hci_conn_params *params;
3522         struct hci_conn *conn;
3523         bool mgmt_connected;
3524
3525         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3526
3527         hci_dev_lock(hdev);
3528
3529         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3530         if (!conn)
3531                 goto unlock;
3532
3533         if (ev->status) {
3534                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3535                                        conn->dst_type, ev->status);
3536                 goto unlock;
3537         }
3538
3539         conn->state = BT_CLOSED;
3540
3541         mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3542
3543         if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3544                 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3545         else
3546                 reason = hci_to_mgmt_reason(ev->reason);
3547
3548         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3549                                 reason, mgmt_connected);
3550
3551         if (conn->type == ACL_LINK) {
3552                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3553                         hci_remove_link_key(hdev, &conn->dst);
3554
3555                 hci_update_scan(hdev);
3556         }
3557
3558         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3559         if (params) {
3560                 switch (params->auto_connect) {
3561                 case HCI_AUTO_CONN_LINK_LOSS:
3562                         if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3563                                 break;
3564                         fallthrough;
3565
3566                 case HCI_AUTO_CONN_DIRECT:
3567                 case HCI_AUTO_CONN_ALWAYS:
3568                         hci_pend_le_list_del_init(params);
3569                         hci_pend_le_list_add(params, &hdev->pend_le_conns);
3570                         hci_update_passive_scan(hdev);
3571                         break;
3572
3573                 default:
3574                         break;
3575                 }
3576         }
3577
3578         hci_disconn_cfm(conn, ev->reason);
3579
3580         /* Re-enable advertising if necessary, since it might
3581          * have been disabled by the connection. From the
3582          * HCI_LE_Set_Advertise_Enable command description in
3583          * the core specification (v4.0):
3584          * "The Controller shall continue advertising until the Host
3585          * issues an LE_Set_Advertise_Enable command with
3586          * Advertising_Enable set to 0x00 (Advertising is disabled)
3587          * or until a connection is created or until the Advertising
3588          * is timed out due to Directed Advertising."
3589          */
3590         if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3591                 hdev->cur_adv_instance = conn->adv_instance;
3592                 hci_enable_advertising(hdev);
3593         }
3594
3595         hci_conn_del(conn);
3596
3597 unlock:
3598         hci_dev_unlock(hdev);
3599 }
3600
3601 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3602                                   struct sk_buff *skb)
3603 {
3604         struct hci_ev_auth_complete *ev = data;
3605         struct hci_conn *conn;
3606
3607         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3608
3609         hci_dev_lock(hdev);
3610
3611         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3612         if (!conn)
3613                 goto unlock;
3614
3615         if (!ev->status) {
3616                 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3617                 set_bit(HCI_CONN_AUTH, &conn->flags);
3618                 conn->sec_level = conn->pending_sec_level;
3619         } else {
3620                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3621                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3622
3623                 mgmt_auth_failed(conn, ev->status);
3624         }
3625
3626         clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3627
3628         if (conn->state == BT_CONFIG) {
3629                 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3630                         struct hci_cp_set_conn_encrypt cp;
3631                         cp.handle  = ev->handle;
3632                         cp.encrypt = 0x01;
3633                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3634                                      &cp);
3635                 } else {
3636                         conn->state = BT_CONNECTED;
3637                         hci_connect_cfm(conn, ev->status);
3638                         hci_conn_drop(conn);
3639                 }
3640         } else {
3641                 hci_auth_cfm(conn, ev->status);
3642
3643                 hci_conn_hold(conn);
3644                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3645                 hci_conn_drop(conn);
3646         }
3647
3648         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3649                 if (!ev->status) {
3650                         struct hci_cp_set_conn_encrypt cp;
3651                         cp.handle  = ev->handle;
3652                         cp.encrypt = 0x01;
3653                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3654                                      &cp);
3655                 } else {
3656                         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3657                         hci_encrypt_cfm(conn, ev->status);
3658                 }
3659         }
3660
3661 unlock:
3662         hci_dev_unlock(hdev);
3663 }
3664
3665 static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3666                                 struct sk_buff *skb)
3667 {
3668         struct hci_ev_remote_name *ev = data;
3669         struct hci_conn *conn;
3670
3671         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3672
3673         hci_conn_check_pending(hdev);
3674
3675         hci_dev_lock(hdev);
3676
3677         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3678
3679         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3680                 goto check_auth;
3681
3682         if (ev->status == 0)
3683                 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3684                                        strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3685         else
3686                 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3687
3688 check_auth:
3689         if (!conn)
3690                 goto unlock;
3691
3692         if (!hci_outgoing_auth_needed(hdev, conn))
3693                 goto unlock;
3694
3695         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3696                 struct hci_cp_auth_requested cp;
3697
3698                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3699
3700                 cp.handle = __cpu_to_le16(conn->handle);
3701                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3702         }
3703
3704 unlock:
3705         hci_dev_unlock(hdev);
3706 }
3707
3708 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3709                                    struct sk_buff *skb)
3710 {
3711         struct hci_ev_encrypt_change *ev = data;
3712         struct hci_conn *conn;
3713
3714         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3715
3716         hci_dev_lock(hdev);
3717
3718         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3719         if (!conn)
3720                 goto unlock;
3721
3722         if (!ev->status) {
3723                 if (ev->encrypt) {
3724                         /* Encryption implies authentication */
3725                         set_bit(HCI_CONN_AUTH, &conn->flags);
3726                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3727                         conn->sec_level = conn->pending_sec_level;
3728
3729                         /* P-256 authentication key implies FIPS */
3730                         if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3731                                 set_bit(HCI_CONN_FIPS, &conn->flags);
3732
3733                         if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3734                             conn->type == LE_LINK)
3735                                 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3736                 } else {
3737                         clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3738                         clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3739                 }
3740         }
3741
3742         /* We should disregard the current RPA and generate a new one
3743          * whenever the encryption procedure fails.
3744          */
3745         if (ev->status && conn->type == LE_LINK) {
3746                 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3747                 hci_adv_instances_set_rpa_expired(hdev, true);
3748         }
3749
3750         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3751
3752         /* Check link security requirements are met */
3753         if (!hci_conn_check_link_mode(conn))
3754                 ev->status = HCI_ERROR_AUTH_FAILURE;
3755
3756         if (ev->status && conn->state == BT_CONNECTED) {
3757                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3758                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3759
3760                 /* Notify upper layers so they can cleanup before
3761                  * disconnecting.
3762                  */
3763                 hci_encrypt_cfm(conn, ev->status);
3764                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3765                 hci_conn_drop(conn);
3766                 goto unlock;
3767         }
3768
3769         /* Try reading the encryption key size for encrypted ACL links */
3770         if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3771                 struct hci_cp_read_enc_key_size cp;
3772
3773                 /* Only send HCI_Read_Encryption_Key_Size if the
3774                  * controller really supports it. If it doesn't, assume
3775                  * the default size (16).
3776                  */
3777                 if (!(hdev->commands[20] & 0x10)) {
3778                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3779                         goto notify;
3780                 }
3781
3782                 cp.handle = cpu_to_le16(conn->handle);
3783                 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3784                                  sizeof(cp), &cp)) {
3785                         bt_dev_err(hdev, "sending read key size failed");
3786                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3787                         goto notify;
3788                 }
3789
3790                 goto unlock;
3791         }
3792
3793         /* Set the default Authenticated Payload Timeout after
3794          * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3795          * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3796          * sent when the link is active and Encryption is enabled, the conn
3797          * type can be either LE or ACL and controller must support LMP Ping.
3798          * Ensure for AES-CCM encryption as well.
3799          */
3800         if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3801             test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3802             ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3803              (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3804                 struct hci_cp_write_auth_payload_to cp;
3805
3806                 cp.handle = cpu_to_le16(conn->handle);
3807                 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3808                 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3809                                  sizeof(cp), &cp))
3810                         bt_dev_err(hdev, "write auth payload timeout failed");
3811         }
3812
3813 notify:
3814         hci_encrypt_cfm(conn, ev->status);
3815
3816 unlock:
3817         hci_dev_unlock(hdev);
3818 }
3819
3820 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3821                                              struct sk_buff *skb)
3822 {
3823         struct hci_ev_change_link_key_complete *ev = data;
3824         struct hci_conn *conn;
3825
3826         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3827
3828         hci_dev_lock(hdev);
3829
3830         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3831         if (conn) {
3832                 if (!ev->status)
3833                         set_bit(HCI_CONN_SECURE, &conn->flags);
3834
3835                 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3836
3837                 hci_key_change_cfm(conn, ev->status);
3838         }
3839
3840         hci_dev_unlock(hdev);
3841 }
3842
3843 static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3844                                     struct sk_buff *skb)
3845 {
3846         struct hci_ev_remote_features *ev = data;
3847         struct hci_conn *conn;
3848
3849         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3850
3851         hci_dev_lock(hdev);
3852
3853         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3854         if (!conn)
3855                 goto unlock;
3856
3857         if (!ev->status)
3858                 memcpy(conn->features[0], ev->features, 8);
3859
3860         if (conn->state != BT_CONFIG)
3861                 goto unlock;
3862
3863         if (!ev->status && lmp_ext_feat_capable(hdev) &&
3864             lmp_ext_feat_capable(conn)) {
3865                 struct hci_cp_read_remote_ext_features cp;
3866                 cp.handle = ev->handle;
3867                 cp.page = 0x01;
3868                 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3869                              sizeof(cp), &cp);
3870                 goto unlock;
3871         }
3872
3873         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3874                 struct hci_cp_remote_name_req cp;
3875                 memset(&cp, 0, sizeof(cp));
3876                 bacpy(&cp.bdaddr, &conn->dst);
3877                 cp.pscan_rep_mode = 0x02;
3878                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3879         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3880                 mgmt_device_connected(hdev, conn, NULL, 0);
3881
3882         if (!hci_outgoing_auth_needed(hdev, conn)) {
3883                 conn->state = BT_CONNECTED;
3884                 hci_connect_cfm(conn, ev->status);
3885                 hci_conn_drop(conn);
3886         }
3887
3888 unlock:
3889         hci_dev_unlock(hdev);
3890 }
3891
3892 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3893 {
3894         cancel_delayed_work(&hdev->cmd_timer);
3895
3896         rcu_read_lock();
3897         if (!test_bit(HCI_RESET, &hdev->flags)) {
3898                 if (ncmd) {
3899                         cancel_delayed_work(&hdev->ncmd_timer);
3900                         atomic_set(&hdev->cmd_cnt, 1);
3901                 } else {
3902                         if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3903                                 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3904                                                    HCI_NCMD_TIMEOUT);
3905                 }
3906         }
3907         rcu_read_unlock();
3908 }
3909
3910 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3911                                         struct sk_buff *skb)
3912 {
3913         struct hci_rp_le_read_buffer_size_v2 *rp = data;
3914
3915         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3916
3917         if (rp->status)
3918                 return rp->status;
3919
3920         hdev->le_mtu   = __le16_to_cpu(rp->acl_mtu);
3921         hdev->le_pkts  = rp->acl_max_pkt;
3922         hdev->iso_mtu  = __le16_to_cpu(rp->iso_mtu);
3923         hdev->iso_pkts = rp->iso_max_pkt;
3924
3925         hdev->le_cnt  = hdev->le_pkts;
3926         hdev->iso_cnt = hdev->iso_pkts;
3927
3928         BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3929                hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3930
3931         return rp->status;
3932 }
3933
3934 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status)
3935 {
3936         struct hci_conn *conn, *tmp;
3937
3938         lockdep_assert_held(&hdev->lock);
3939
3940         list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
3941                 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) ||
3942                     conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig)
3943                         continue;
3944
3945                 if (HCI_CONN_HANDLE_UNSET(conn->handle))
3946                         hci_conn_failed(conn, status);
3947         }
3948 }
3949
3950 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3951                                    struct sk_buff *skb)
3952 {
3953         struct hci_rp_le_set_cig_params *rp = data;
3954         struct hci_cp_le_set_cig_params *cp;
3955         struct hci_conn *conn;
3956         u8 status = rp->status;
3957         bool pending = false;
3958         int i;
3959
3960         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3961
3962         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS);
3963         if (!rp->status && (!cp || rp->num_handles != cp->num_cis ||
3964                             rp->cig_id != cp->cig_id)) {
3965                 bt_dev_err(hdev, "unexpected Set CIG Parameters response data");
3966                 status = HCI_ERROR_UNSPECIFIED;
3967         }
3968
3969         hci_dev_lock(hdev);
3970
3971         /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554
3972          *
3973          * If the Status return parameter is non-zero, then the state of the CIG
3974          * and its CIS configurations shall not be changed by the command. If
3975          * the CIG did not already exist, it shall not be created.
3976          */
3977         if (status) {
3978                 /* Keep current configuration, fail only the unbound CIS */
3979                 hci_unbound_cis_failed(hdev, rp->cig_id, status);
3980                 goto unlock;
3981         }
3982
3983         /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553
3984          *
3985          * If the Status return parameter is zero, then the Controller shall
3986          * set the Connection_Handle arrayed return parameter to the connection
3987          * handle(s) corresponding to the CIS configurations specified in
3988          * the CIS_IDs command parameter, in the same order.
3989          */
3990         for (i = 0; i < rp->num_handles; ++i) {
3991                 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id,
3992                                                 cp->cis[i].cis_id);
3993                 if (!conn || !bacmp(&conn->dst, BDADDR_ANY))
3994                         continue;
3995
3996                 if (conn->state != BT_BOUND && conn->state != BT_CONNECT)
3997                         continue;
3998
3999                 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i])))
4000                         continue;
4001
4002                 if (conn->state == BT_CONNECT)
4003                         pending = true;
4004         }
4005
4006 unlock:
4007         if (pending)
4008                 hci_le_create_cis_pending(hdev);
4009
4010         hci_dev_unlock(hdev);
4011
4012         return rp->status;
4013 }
4014
4015 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
4016                                    struct sk_buff *skb)
4017 {
4018         struct hci_rp_le_setup_iso_path *rp = data;
4019         struct hci_cp_le_setup_iso_path *cp;
4020         struct hci_conn *conn;
4021
4022         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4023
4024         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
4025         if (!cp)
4026                 return rp->status;
4027
4028         hci_dev_lock(hdev);
4029
4030         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
4031         if (!conn)
4032                 goto unlock;
4033
4034         if (rp->status) {
4035                 hci_connect_cfm(conn, rp->status);
4036                 hci_conn_del(conn);
4037                 goto unlock;
4038         }
4039
4040         switch (cp->direction) {
4041         /* Input (Host to Controller) */
4042         case 0x00:
4043                 /* Only confirm connection if output only */
4044                 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu)
4045                         hci_connect_cfm(conn, rp->status);
4046                 break;
4047         /* Output (Controller to Host) */
4048         case 0x01:
4049                 /* Confirm connection since conn->iso_qos is always configured
4050                  * last.
4051                  */
4052                 hci_connect_cfm(conn, rp->status);
4053                 break;
4054         }
4055
4056 unlock:
4057         hci_dev_unlock(hdev);
4058         return rp->status;
4059 }
4060
4061 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
4062 {
4063         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4064 }
4065
4066 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
4067                                    struct sk_buff *skb)
4068 {
4069         struct hci_ev_status *rp = data;
4070         struct hci_cp_le_set_per_adv_params *cp;
4071
4072         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4073
4074         if (rp->status)
4075                 return rp->status;
4076
4077         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
4078         if (!cp)
4079                 return rp->status;
4080
4081         /* TODO: set the conn state */
4082         return rp->status;
4083 }
4084
4085 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
4086                                        struct sk_buff *skb)
4087 {
4088         struct hci_ev_status *rp = data;
4089         struct hci_cp_le_set_per_adv_enable *cp;
4090         struct adv_info *adv = NULL, *n;
4091         u8 per_adv_cnt = 0;
4092
4093         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4094
4095         if (rp->status)
4096                 return rp->status;
4097
4098         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
4099         if (!cp)
4100                 return rp->status;
4101
4102         hci_dev_lock(hdev);
4103
4104         adv = hci_find_adv_instance(hdev, cp->handle);
4105
4106         if (cp->enable) {
4107                 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
4108
4109                 if (adv)
4110                         adv->enabled = true;
4111         } else {
4112                 /* If just one instance was disabled check if there are
4113                  * any other instance enabled before clearing HCI_LE_PER_ADV.
4114                  * The current periodic adv instance will be marked as
4115                  * disabled once extended advertising is also disabled.
4116                  */
4117                 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
4118                                          list) {
4119                         if (adv->periodic && adv->enabled)
4120                                 per_adv_cnt++;
4121                 }
4122
4123                 if (per_adv_cnt > 1)
4124                         goto unlock;
4125
4126                 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
4127         }
4128
4129 unlock:
4130         hci_dev_unlock(hdev);
4131
4132         return rp->status;
4133 }
4134
4135 #define HCI_CC_VL(_op, _func, _min, _max) \
4136 { \
4137         .op = _op, \
4138         .func = _func, \
4139         .min_len = _min, \
4140         .max_len = _max, \
4141 }
4142
4143 #define HCI_CC(_op, _func, _len) \
4144         HCI_CC_VL(_op, _func, _len, _len)
4145
4146 #define HCI_CC_STATUS(_op, _func) \
4147         HCI_CC(_op, _func, sizeof(struct hci_ev_status))
4148
4149 static const struct hci_cc {
4150         u16  op;
4151         u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4152         u16  min_len;
4153         u16  max_len;
4154 } hci_cc_table[] = {
4155         HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4156         HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4157         HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4158         HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4159                       hci_cc_remote_name_req_cancel),
4160         HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4161                sizeof(struct hci_rp_role_discovery)),
4162         HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4163                sizeof(struct hci_rp_read_link_policy)),
4164         HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4165                sizeof(struct hci_rp_write_link_policy)),
4166         HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4167                sizeof(struct hci_rp_read_def_link_policy)),
4168         HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4169                       hci_cc_write_def_link_policy),
4170         HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4171         HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4172                sizeof(struct hci_rp_read_stored_link_key)),
4173         HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4174                sizeof(struct hci_rp_delete_stored_link_key)),
4175         HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4176         HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4177                sizeof(struct hci_rp_read_local_name)),
4178         HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4179         HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4180         HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4181         HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4182         HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4183                sizeof(struct hci_rp_read_class_of_dev)),
4184         HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4185         HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4186                sizeof(struct hci_rp_read_voice_setting)),
4187         HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4188         HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4189                sizeof(struct hci_rp_read_num_supported_iac)),
4190         HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4191         HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4192         HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4193                sizeof(struct hci_rp_read_auth_payload_to)),
4194         HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4195                sizeof(struct hci_rp_write_auth_payload_to)),
4196         HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4197                sizeof(struct hci_rp_read_local_version)),
4198         HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4199                sizeof(struct hci_rp_read_local_commands)),
4200         HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4201                sizeof(struct hci_rp_read_local_features)),
4202         HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4203                sizeof(struct hci_rp_read_local_ext_features)),
4204         HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4205                sizeof(struct hci_rp_read_buffer_size)),
4206         HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4207                sizeof(struct hci_rp_read_bd_addr)),
4208         HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4209                sizeof(struct hci_rp_read_local_pairing_opts)),
4210         HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4211                sizeof(struct hci_rp_read_page_scan_activity)),
4212         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4213                       hci_cc_write_page_scan_activity),
4214         HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4215                sizeof(struct hci_rp_read_page_scan_type)),
4216         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4217         HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4218                sizeof(struct hci_rp_read_data_block_size)),
4219         HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4220                sizeof(struct hci_rp_read_flow_control_mode)),
4221         HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4222                sizeof(struct hci_rp_read_local_amp_info)),
4223         HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4224                sizeof(struct hci_rp_read_clock)),
4225         HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4226                sizeof(struct hci_rp_read_enc_key_size)),
4227         HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4228                sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4229         HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4230                hci_cc_read_def_err_data_reporting,
4231                sizeof(struct hci_rp_read_def_err_data_reporting)),
4232         HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4233                       hci_cc_write_def_err_data_reporting),
4234         HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4235                sizeof(struct hci_rp_pin_code_reply)),
4236         HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4237                sizeof(struct hci_rp_pin_code_neg_reply)),
4238         HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4239                sizeof(struct hci_rp_read_local_oob_data)),
4240         HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4241                sizeof(struct hci_rp_read_local_oob_ext_data)),
4242         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4243                sizeof(struct hci_rp_le_read_buffer_size)),
4244         HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4245                sizeof(struct hci_rp_le_read_local_features)),
4246         HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4247                sizeof(struct hci_rp_le_read_adv_tx_power)),
4248         HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4249                sizeof(struct hci_rp_user_confirm_reply)),
4250         HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4251                sizeof(struct hci_rp_user_confirm_reply)),
4252         HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4253                sizeof(struct hci_rp_user_confirm_reply)),
4254         HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4255                sizeof(struct hci_rp_user_confirm_reply)),
4256         HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4257         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4258         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4259         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4260         HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4261                hci_cc_le_read_accept_list_size,
4262                sizeof(struct hci_rp_le_read_accept_list_size)),
4263         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4264         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4265                       hci_cc_le_add_to_accept_list),
4266         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4267                       hci_cc_le_del_from_accept_list),
4268         HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4269                sizeof(struct hci_rp_le_read_supported_states)),
4270         HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4271                sizeof(struct hci_rp_le_read_def_data_len)),
4272         HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4273                       hci_cc_le_write_def_data_len),
4274         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4275                       hci_cc_le_add_to_resolv_list),
4276         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4277                       hci_cc_le_del_from_resolv_list),
4278         HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4279                       hci_cc_le_clear_resolv_list),
4280         HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4281                sizeof(struct hci_rp_le_read_resolv_list_size)),
4282         HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4283                       hci_cc_le_set_addr_resolution_enable),
4284         HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4285                sizeof(struct hci_rp_le_read_max_data_len)),
4286         HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4287                       hci_cc_write_le_host_supported),
4288         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4289         HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4290                sizeof(struct hci_rp_read_rssi)),
4291         HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4292                sizeof(struct hci_rp_read_tx_power)),
4293         HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4294         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4295                       hci_cc_le_set_ext_scan_param),
4296         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4297                       hci_cc_le_set_ext_scan_enable),
4298         HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4299         HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4300                hci_cc_le_read_num_adv_sets,
4301                sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4302         HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4303                sizeof(struct hci_rp_le_set_ext_adv_params)),
4304         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4305                       hci_cc_le_set_ext_adv_enable),
4306         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4307                       hci_cc_le_set_adv_set_random_addr),
4308         HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4309         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4310         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4311         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4312                       hci_cc_le_set_per_adv_enable),
4313         HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4314                sizeof(struct hci_rp_le_read_transmit_power)),
4315 #ifdef TIZEN_BT
4316         HCI_CC(HCI_OP_ENABLE_RSSI, hci_cc_enable_rssi,
4317                sizeof(struct hci_cc_rsp_enable_rssi)),
4318         HCI_CC(HCI_OP_GET_RAW_RSSI, hci_cc_get_raw_rssi,
4319                sizeof(struct hci_cc_rp_get_raw_rssi)),
4320 #endif
4321         HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4322         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4323                sizeof(struct hci_rp_le_read_buffer_size_v2)),
4324         HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4325                   sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4326         HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4327                sizeof(struct hci_rp_le_setup_iso_path)),
4328 };
4329
4330 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4331                       struct sk_buff *skb)
4332 {
4333         void *data;
4334
4335         if (skb->len < cc->min_len) {
4336                 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4337                            cc->op, skb->len, cc->min_len);
4338                 return HCI_ERROR_UNSPECIFIED;
4339         }
4340
4341         /* Just warn if the length is over max_len size it still be possible to
4342          * partially parse the cc so leave to callback to decide if that is
4343          * acceptable.
4344          */
4345         if (skb->len > cc->max_len)
4346                 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4347                             cc->op, skb->len, cc->max_len);
4348
4349         data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4350         if (!data)
4351                 return HCI_ERROR_UNSPECIFIED;
4352
4353         return cc->func(hdev, data, skb);
4354 }
4355
4356 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4357                                  struct sk_buff *skb, u16 *opcode, u8 *status,
4358                                  hci_req_complete_t *req_complete,
4359                                  hci_req_complete_skb_t *req_complete_skb)
4360 {
4361         struct hci_ev_cmd_complete *ev = data;
4362         int i;
4363
4364         *opcode = __le16_to_cpu(ev->opcode);
4365
4366         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4367
4368         for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4369                 if (hci_cc_table[i].op == *opcode) {
4370                         *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4371                         break;
4372                 }
4373         }
4374
4375         if (i == ARRAY_SIZE(hci_cc_table)) {
4376                 /* Unknown opcode, assume byte 0 contains the status, so
4377                  * that e.g. __hci_cmd_sync() properly returns errors
4378                  * for vendor specific commands send by HCI drivers.
4379                  * If a vendor doesn't actually follow this convention we may
4380                  * need to introduce a vendor CC table in order to properly set
4381                  * the status.
4382                  */
4383                 *status = skb->data[0];
4384         }
4385
4386         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4387
4388         hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4389                              req_complete_skb);
4390
4391         if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4392                 bt_dev_err(hdev,
4393                            "unexpected event for opcode 0x%4.4x", *opcode);
4394                 return;
4395         }
4396
4397         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4398                 queue_work(hdev->workqueue, &hdev->cmd_work);
4399 }
4400
4401 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4402 {
4403         struct hci_cp_le_create_cis *cp;
4404         bool pending = false;
4405         int i;
4406
4407         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4408
4409         if (!status)
4410                 return;
4411
4412         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4413         if (!cp)
4414                 return;
4415
4416         hci_dev_lock(hdev);
4417
4418         /* Remove connection if command failed */
4419         for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4420                 struct hci_conn *conn;
4421                 u16 handle;
4422
4423                 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4424
4425                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4426                 if (conn) {
4427                         if (test_and_clear_bit(HCI_CONN_CREATE_CIS,
4428                                                &conn->flags))
4429                                 pending = true;
4430                         conn->state = BT_CLOSED;
4431                         hci_connect_cfm(conn, status);
4432                         hci_conn_del(conn);
4433                 }
4434         }
4435
4436         if (pending)
4437                 hci_le_create_cis_pending(hdev);
4438
4439         hci_dev_unlock(hdev);
4440 }
4441
4442 #define HCI_CS(_op, _func) \
4443 { \
4444         .op = _op, \
4445         .func = _func, \
4446 }
4447
4448 static const struct hci_cs {
4449         u16  op;
4450         void (*func)(struct hci_dev *hdev, __u8 status);
4451 } hci_cs_table[] = {
4452         HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4453         HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4454         HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4455         HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4456         HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4457         HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4458         HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4459         HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4460         HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4461                hci_cs_read_remote_ext_features),
4462         HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4463         HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4464                hci_cs_enhanced_setup_sync_conn),
4465         HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4466         HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4467         HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4468         HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4469         HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4470         HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4471         HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4472         HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4473         HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4474 };
4475
4476 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4477                                struct sk_buff *skb, u16 *opcode, u8 *status,
4478                                hci_req_complete_t *req_complete,
4479                                hci_req_complete_skb_t *req_complete_skb)
4480 {
4481         struct hci_ev_cmd_status *ev = data;
4482         int i;
4483
4484         *opcode = __le16_to_cpu(ev->opcode);
4485         *status = ev->status;
4486
4487         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4488
4489         for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4490                 if (hci_cs_table[i].op == *opcode) {
4491                         hci_cs_table[i].func(hdev, ev->status);
4492                         break;
4493                 }
4494         }
4495
4496         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4497
4498         /* Indicate request completion if the command failed. Also, if
4499          * we're not waiting for a special event and we get a success
4500          * command status we should try to flag the request as completed
4501          * (since for this kind of commands there will not be a command
4502          * complete event).
4503          */
4504         if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4505                 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4506                                      req_complete_skb);
4507                 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4508                         bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4509                                    *opcode);
4510                         return;
4511                 }
4512         }
4513
4514         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4515                 queue_work(hdev->workqueue, &hdev->cmd_work);
4516 }
4517
4518 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4519                                    struct sk_buff *skb)
4520 {
4521         struct hci_ev_hardware_error *ev = data;
4522
4523         bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4524
4525 #ifdef TIZEN_BT
4526         hci_dev_lock(hdev);
4527         mgmt_hardware_error(hdev, ev->code);
4528         hci_dev_unlock(hdev);
4529 #endif
4530         hdev->hw_error_code = ev->code;
4531
4532         queue_work(hdev->req_workqueue, &hdev->error_reset);
4533 }
4534
4535 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4536                                 struct sk_buff *skb)
4537 {
4538         struct hci_ev_role_change *ev = data;
4539         struct hci_conn *conn;
4540
4541         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4542
4543         hci_dev_lock(hdev);
4544
4545         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4546         if (conn) {
4547                 if (!ev->status)
4548                         conn->role = ev->role;
4549
4550                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4551
4552                 hci_role_switch_cfm(conn, ev->status, ev->role);
4553         }
4554
4555         hci_dev_unlock(hdev);
4556 }
4557
4558 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4559                                   struct sk_buff *skb)
4560 {
4561         struct hci_ev_num_comp_pkts *ev = data;
4562         int i;
4563
4564         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4565                              flex_array_size(ev, handles, ev->num)))
4566                 return;
4567
4568         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4569                 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4570                 return;
4571         }
4572
4573         bt_dev_dbg(hdev, "num %d", ev->num);
4574
4575         for (i = 0; i < ev->num; i++) {
4576                 struct hci_comp_pkts_info *info = &ev->handles[i];
4577                 struct hci_conn *conn;
4578                 __u16  handle, count;
4579
4580                 handle = __le16_to_cpu(info->handle);
4581                 count  = __le16_to_cpu(info->count);
4582
4583                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4584                 if (!conn)
4585                         continue;
4586
4587                 conn->sent -= count;
4588
4589                 switch (conn->type) {
4590                 case ACL_LINK:
4591                         hdev->acl_cnt += count;
4592                         if (hdev->acl_cnt > hdev->acl_pkts)
4593                                 hdev->acl_cnt = hdev->acl_pkts;
4594                         break;
4595
4596                 case LE_LINK:
4597                         if (hdev->le_pkts) {
4598                                 hdev->le_cnt += count;
4599                                 if (hdev->le_cnt > hdev->le_pkts)
4600                                         hdev->le_cnt = hdev->le_pkts;
4601                         } else {
4602                                 hdev->acl_cnt += count;
4603                                 if (hdev->acl_cnt > hdev->acl_pkts)
4604                                         hdev->acl_cnt = hdev->acl_pkts;
4605                         }
4606                         break;
4607
4608                 case SCO_LINK:
4609                         hdev->sco_cnt += count;
4610                         if (hdev->sco_cnt > hdev->sco_pkts)
4611                                 hdev->sco_cnt = hdev->sco_pkts;
4612                         break;
4613
4614                 case ISO_LINK:
4615                         if (hdev->iso_pkts) {
4616                                 hdev->iso_cnt += count;
4617                                 if (hdev->iso_cnt > hdev->iso_pkts)
4618                                         hdev->iso_cnt = hdev->iso_pkts;
4619                         } else if (hdev->le_pkts) {
4620                                 hdev->le_cnt += count;
4621                                 if (hdev->le_cnt > hdev->le_pkts)
4622                                         hdev->le_cnt = hdev->le_pkts;
4623                         } else {
4624                                 hdev->acl_cnt += count;
4625                                 if (hdev->acl_cnt > hdev->acl_pkts)
4626                                         hdev->acl_cnt = hdev->acl_pkts;
4627                         }
4628                         break;
4629
4630                 default:
4631                         bt_dev_err(hdev, "unknown type %d conn %p",
4632                                    conn->type, conn);
4633                         break;
4634                 }
4635         }
4636
4637         queue_work(hdev->workqueue, &hdev->tx_work);
4638 }
4639
4640 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4641                                                  __u16 handle)
4642 {
4643         struct hci_chan *chan;
4644
4645         switch (hdev->dev_type) {
4646         case HCI_PRIMARY:
4647                 return hci_conn_hash_lookup_handle(hdev, handle);
4648         case HCI_AMP:
4649                 chan = hci_chan_lookup_handle(hdev, handle);
4650                 if (chan)
4651                         return chan->conn;
4652                 break;
4653         default:
4654                 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4655                 break;
4656         }
4657
4658         return NULL;
4659 }
4660
4661 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4662                                     struct sk_buff *skb)
4663 {
4664         struct hci_ev_num_comp_blocks *ev = data;
4665         int i;
4666
4667         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4668                              flex_array_size(ev, handles, ev->num_hndl)))
4669                 return;
4670
4671         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4672                 bt_dev_err(hdev, "wrong event for mode %d",
4673                            hdev->flow_ctl_mode);
4674                 return;
4675         }
4676
4677         bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4678                    ev->num_hndl);
4679
4680         for (i = 0; i < ev->num_hndl; i++) {
4681                 struct hci_comp_blocks_info *info = &ev->handles[i];
4682                 struct hci_conn *conn = NULL;
4683                 __u16  handle, block_count;
4684
4685                 handle = __le16_to_cpu(info->handle);
4686                 block_count = __le16_to_cpu(info->blocks);
4687
4688                 conn = __hci_conn_lookup_handle(hdev, handle);
4689                 if (!conn)
4690                         continue;
4691
4692                 conn->sent -= block_count;
4693
4694                 switch (conn->type) {
4695                 case ACL_LINK:
4696                 case AMP_LINK:
4697                         hdev->block_cnt += block_count;
4698                         if (hdev->block_cnt > hdev->num_blocks)
4699                                 hdev->block_cnt = hdev->num_blocks;
4700                         break;
4701
4702                 default:
4703                         bt_dev_err(hdev, "unknown type %d conn %p",
4704                                    conn->type, conn);
4705                         break;
4706                 }
4707         }
4708
4709         queue_work(hdev->workqueue, &hdev->tx_work);
4710 }
4711
4712 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4713                                 struct sk_buff *skb)
4714 {
4715         struct hci_ev_mode_change *ev = data;
4716         struct hci_conn *conn;
4717
4718         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4719
4720         hci_dev_lock(hdev);
4721
4722         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4723         if (conn) {
4724                 conn->mode = ev->mode;
4725
4726                 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4727                                         &conn->flags)) {
4728                         if (conn->mode == HCI_CM_ACTIVE)
4729                                 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4730                         else
4731                                 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4732                 }
4733
4734                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4735                         hci_sco_setup(conn, ev->status);
4736         }
4737
4738         hci_dev_unlock(hdev);
4739 }
4740
4741 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4742                                      struct sk_buff *skb)
4743 {
4744         struct hci_ev_pin_code_req *ev = data;
4745         struct hci_conn *conn;
4746
4747         bt_dev_dbg(hdev, "");
4748
4749         hci_dev_lock(hdev);
4750
4751         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4752         if (!conn)
4753                 goto unlock;
4754
4755         if (conn->state == BT_CONNECTED) {
4756                 hci_conn_hold(conn);
4757                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4758                 hci_conn_drop(conn);
4759         }
4760
4761         if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4762             !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4763                 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4764                              sizeof(ev->bdaddr), &ev->bdaddr);
4765         } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4766                 u8 secure;
4767
4768                 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4769                         secure = 1;
4770                 else
4771                         secure = 0;
4772
4773                 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4774         }
4775
4776 unlock:
4777         hci_dev_unlock(hdev);
4778 }
4779
4780 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4781 {
4782         if (key_type == HCI_LK_CHANGED_COMBINATION)
4783                 return;
4784
4785         conn->pin_length = pin_len;
4786         conn->key_type = key_type;
4787
4788         switch (key_type) {
4789         case HCI_LK_LOCAL_UNIT:
4790         case HCI_LK_REMOTE_UNIT:
4791         case HCI_LK_DEBUG_COMBINATION:
4792                 return;
4793         case HCI_LK_COMBINATION:
4794                 if (pin_len == 16)
4795                         conn->pending_sec_level = BT_SECURITY_HIGH;
4796                 else
4797                         conn->pending_sec_level = BT_SECURITY_MEDIUM;
4798                 break;
4799         case HCI_LK_UNAUTH_COMBINATION_P192:
4800         case HCI_LK_UNAUTH_COMBINATION_P256:
4801                 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4802                 break;
4803         case HCI_LK_AUTH_COMBINATION_P192:
4804                 conn->pending_sec_level = BT_SECURITY_HIGH;
4805                 break;
4806         case HCI_LK_AUTH_COMBINATION_P256:
4807                 conn->pending_sec_level = BT_SECURITY_FIPS;
4808                 break;
4809         }
4810 }
4811
4812 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4813                                      struct sk_buff *skb)
4814 {
4815         struct hci_ev_link_key_req *ev = data;
4816         struct hci_cp_link_key_reply cp;
4817         struct hci_conn *conn;
4818         struct link_key *key;
4819
4820         bt_dev_dbg(hdev, "");
4821
4822         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4823                 return;
4824
4825         hci_dev_lock(hdev);
4826
4827         key = hci_find_link_key(hdev, &ev->bdaddr);
4828         if (!key) {
4829                 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4830                 goto not_found;
4831         }
4832
4833         bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4834
4835         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4836         if (conn) {
4837                 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4838
4839                 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4840                      key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4841                     conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4842                         bt_dev_dbg(hdev, "ignoring unauthenticated key");
4843                         goto not_found;
4844                 }
4845
4846                 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4847                     (conn->pending_sec_level == BT_SECURITY_HIGH ||
4848                      conn->pending_sec_level == BT_SECURITY_FIPS)) {
4849                         bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4850                         goto not_found;
4851                 }
4852
4853                 conn_set_key(conn, key->type, key->pin_len);
4854         }
4855
4856         bacpy(&cp.bdaddr, &ev->bdaddr);
4857         memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4858
4859         hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4860
4861         hci_dev_unlock(hdev);
4862
4863         return;
4864
4865 not_found:
4866         hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4867         hci_dev_unlock(hdev);
4868 }
4869
4870 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4871                                     struct sk_buff *skb)
4872 {
4873         struct hci_ev_link_key_notify *ev = data;
4874         struct hci_conn *conn;
4875         struct link_key *key;
4876         bool persistent;
4877         u8 pin_len = 0;
4878
4879         bt_dev_dbg(hdev, "");
4880
4881         hci_dev_lock(hdev);
4882
4883         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4884         if (!conn)
4885                 goto unlock;
4886
4887         /* Ignore NULL link key against CVE-2020-26555 */
4888         if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) {
4889                 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR",
4890                            &ev->bdaddr);
4891                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
4892                 hci_conn_drop(conn);
4893                 goto unlock;
4894         }
4895
4896         hci_conn_hold(conn);
4897         conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4898         hci_conn_drop(conn);
4899
4900         set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4901         conn_set_key(conn, ev->key_type, conn->pin_length);
4902
4903         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4904                 goto unlock;
4905
4906         key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4907                                 ev->key_type, pin_len, &persistent);
4908         if (!key)
4909                 goto unlock;
4910
4911         /* Update connection information since adding the key will have
4912          * fixed up the type in the case of changed combination keys.
4913          */
4914         if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4915                 conn_set_key(conn, key->type, key->pin_len);
4916
4917         mgmt_new_link_key(hdev, key, persistent);
4918
4919         /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4920          * is set. If it's not set simply remove the key from the kernel
4921          * list (we've still notified user space about it but with
4922          * store_hint being 0).
4923          */
4924         if (key->type == HCI_LK_DEBUG_COMBINATION &&
4925             !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4926                 list_del_rcu(&key->list);
4927                 kfree_rcu(key, rcu);
4928                 goto unlock;
4929         }
4930
4931         if (persistent)
4932                 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4933         else
4934                 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4935
4936 unlock:
4937         hci_dev_unlock(hdev);
4938 }
4939
4940 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4941                                  struct sk_buff *skb)
4942 {
4943         struct hci_ev_clock_offset *ev = data;
4944         struct hci_conn *conn;
4945
4946         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4947
4948         hci_dev_lock(hdev);
4949
4950         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4951         if (conn && !ev->status) {
4952                 struct inquiry_entry *ie;
4953
4954                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4955                 if (ie) {
4956                         ie->data.clock_offset = ev->clock_offset;
4957                         ie->timestamp = jiffies;
4958                 }
4959         }
4960
4961         hci_dev_unlock(hdev);
4962 }
4963
4964 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4965                                     struct sk_buff *skb)
4966 {
4967         struct hci_ev_pkt_type_change *ev = data;
4968         struct hci_conn *conn;
4969
4970         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4971
4972         hci_dev_lock(hdev);
4973
4974         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4975         if (conn && !ev->status)
4976                 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4977
4978         hci_dev_unlock(hdev);
4979 }
4980
4981 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4982                                    struct sk_buff *skb)
4983 {
4984         struct hci_ev_pscan_rep_mode *ev = data;
4985         struct inquiry_entry *ie;
4986
4987         bt_dev_dbg(hdev, "");
4988
4989         hci_dev_lock(hdev);
4990
4991         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4992         if (ie) {
4993                 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4994                 ie->timestamp = jiffies;
4995         }
4996
4997         hci_dev_unlock(hdev);
4998 }
4999
5000 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
5001                                              struct sk_buff *skb)
5002 {
5003         struct hci_ev_inquiry_result_rssi *ev = edata;
5004         struct inquiry_data data;
5005         int i;
5006
5007         bt_dev_dbg(hdev, "num_rsp %d", ev->num);
5008
5009         if (!ev->num)
5010                 return;
5011
5012         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5013                 return;
5014
5015         hci_dev_lock(hdev);
5016
5017         if (skb->len == array_size(ev->num,
5018                                    sizeof(struct inquiry_info_rssi_pscan))) {
5019                 struct inquiry_info_rssi_pscan *info;
5020
5021                 for (i = 0; i < ev->num; i++) {
5022                         u32 flags;
5023
5024                         info = hci_ev_skb_pull(hdev, skb,
5025                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
5026                                                sizeof(*info));
5027                         if (!info) {
5028                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5029                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5030                                 goto unlock;
5031                         }
5032
5033                         bacpy(&data.bdaddr, &info->bdaddr);
5034                         data.pscan_rep_mode     = info->pscan_rep_mode;
5035                         data.pscan_period_mode  = info->pscan_period_mode;
5036                         data.pscan_mode         = info->pscan_mode;
5037                         memcpy(data.dev_class, info->dev_class, 3);
5038                         data.clock_offset       = info->clock_offset;
5039                         data.rssi               = info->rssi;
5040                         data.ssp_mode           = 0x00;
5041
5042                         flags = hci_inquiry_cache_update(hdev, &data, false);
5043
5044                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5045                                           info->dev_class, info->rssi,
5046                                           flags, NULL, 0, NULL, 0, 0);
5047                 }
5048         } else if (skb->len == array_size(ev->num,
5049                                           sizeof(struct inquiry_info_rssi))) {
5050                 struct inquiry_info_rssi *info;
5051
5052                 for (i = 0; i < ev->num; i++) {
5053                         u32 flags;
5054
5055                         info = hci_ev_skb_pull(hdev, skb,
5056                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
5057                                                sizeof(*info));
5058                         if (!info) {
5059                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5060                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5061                                 goto unlock;
5062                         }
5063
5064                         bacpy(&data.bdaddr, &info->bdaddr);
5065                         data.pscan_rep_mode     = info->pscan_rep_mode;
5066                         data.pscan_period_mode  = info->pscan_period_mode;
5067                         data.pscan_mode         = 0x00;
5068                         memcpy(data.dev_class, info->dev_class, 3);
5069                         data.clock_offset       = info->clock_offset;
5070                         data.rssi               = info->rssi;
5071                         data.ssp_mode           = 0x00;
5072
5073                         flags = hci_inquiry_cache_update(hdev, &data, false);
5074
5075                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5076                                           info->dev_class, info->rssi,
5077                                           flags, NULL, 0, NULL, 0, 0);
5078                 }
5079         } else {
5080                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5081                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5082         }
5083 unlock:
5084         hci_dev_unlock(hdev);
5085 }
5086
5087 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
5088                                         struct sk_buff *skb)
5089 {
5090         struct hci_ev_remote_ext_features *ev = data;
5091         struct hci_conn *conn;
5092
5093         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5094
5095         hci_dev_lock(hdev);
5096
5097         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5098         if (!conn)
5099                 goto unlock;
5100
5101         if (ev->page < HCI_MAX_PAGES)
5102                 memcpy(conn->features[ev->page], ev->features, 8);
5103
5104         if (!ev->status && ev->page == 0x01) {
5105                 struct inquiry_entry *ie;
5106
5107                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
5108                 if (ie)
5109                         ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5110
5111                 if (ev->features[0] & LMP_HOST_SSP) {
5112                         set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5113                 } else {
5114                         /* It is mandatory by the Bluetooth specification that
5115                          * Extended Inquiry Results are only used when Secure
5116                          * Simple Pairing is enabled, but some devices violate
5117                          * this.
5118                          *
5119                          * To make these devices work, the internal SSP
5120                          * enabled flag needs to be cleared if the remote host
5121                          * features do not indicate SSP support */
5122                         clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5123                 }
5124
5125                 if (ev->features[0] & LMP_HOST_SC)
5126                         set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
5127         }
5128
5129         if (conn->state != BT_CONFIG)
5130                 goto unlock;
5131
5132         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
5133                 struct hci_cp_remote_name_req cp;
5134                 memset(&cp, 0, sizeof(cp));
5135                 bacpy(&cp.bdaddr, &conn->dst);
5136                 cp.pscan_rep_mode = 0x02;
5137                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
5138         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5139                 mgmt_device_connected(hdev, conn, NULL, 0);
5140
5141         if (!hci_outgoing_auth_needed(hdev, conn)) {
5142                 conn->state = BT_CONNECTED;
5143                 hci_connect_cfm(conn, ev->status);
5144                 hci_conn_drop(conn);
5145         }
5146
5147 unlock:
5148         hci_dev_unlock(hdev);
5149 }
5150
5151 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
5152                                        struct sk_buff *skb)
5153 {
5154         struct hci_ev_sync_conn_complete *ev = data;
5155         struct hci_conn *conn;
5156         u8 status = ev->status;
5157
5158         switch (ev->link_type) {
5159         case SCO_LINK:
5160         case ESCO_LINK:
5161                 break;
5162         default:
5163                 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
5164                  * for HCI_Synchronous_Connection_Complete is limited to
5165                  * either SCO or eSCO
5166                  */
5167                 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
5168                 return;
5169         }
5170
5171         bt_dev_dbg(hdev, "status 0x%2.2x", status);
5172
5173         hci_dev_lock(hdev);
5174
5175         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
5176         if (!conn) {
5177                 if (ev->link_type == ESCO_LINK)
5178                         goto unlock;
5179
5180                 /* When the link type in the event indicates SCO connection
5181                  * and lookup of the connection object fails, then check
5182                  * if an eSCO connection object exists.
5183                  *
5184                  * The core limits the synchronous connections to either
5185                  * SCO or eSCO. The eSCO connection is preferred and tried
5186                  * to be setup first and until successfully established,
5187                  * the link type will be hinted as eSCO.
5188                  */
5189                 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
5190                 if (!conn)
5191                         goto unlock;
5192         }
5193
5194         /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
5195          * Processing it more than once per connection can corrupt kernel memory.
5196          *
5197          * As the connection handle is set here for the first time, it indicates
5198          * whether the connection is already set up.
5199          */
5200         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5201                 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5202                 goto unlock;
5203         }
5204
5205         switch (status) {
5206         case 0x00:
5207                 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
5208                 if (status) {
5209                         conn->state = BT_CLOSED;
5210                         break;
5211                 }
5212
5213                 conn->state  = BT_CONNECTED;
5214                 conn->type   = ev->link_type;
5215
5216                 hci_debugfs_create_conn(conn);
5217                 hci_conn_add_sysfs(conn);
5218                 break;
5219
5220         case 0x10:      /* Connection Accept Timeout */
5221         case 0x0d:      /* Connection Rejected due to Limited Resources */
5222         case 0x11:      /* Unsupported Feature or Parameter Value */
5223         case 0x1c:      /* SCO interval rejected */
5224         case 0x1a:      /* Unsupported Remote Feature */
5225         case 0x1e:      /* Invalid LMP Parameters */
5226         case 0x1f:      /* Unspecified error */
5227         case 0x20:      /* Unsupported LMP Parameter value */
5228                 if (conn->out) {
5229                         conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5230                                         (hdev->esco_type & EDR_ESCO_MASK);
5231                         if (hci_setup_sync(conn, conn->parent->handle))
5232                                 goto unlock;
5233                 }
5234                 fallthrough;
5235
5236         default:
5237                 conn->state = BT_CLOSED;
5238                 break;
5239         }
5240
5241         bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5242         /* Notify only in case of SCO over HCI transport data path which
5243          * is zero and non-zero value shall be non-HCI transport data path
5244          */
5245         if (conn->codec.data_path == 0 && hdev->notify) {
5246                 switch (ev->air_mode) {
5247                 case 0x02:
5248                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5249                         break;
5250                 case 0x03:
5251                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5252                         break;
5253                 }
5254         }
5255
5256         hci_connect_cfm(conn, status);
5257         if (status)
5258                 hci_conn_del(conn);
5259
5260 unlock:
5261         hci_dev_unlock(hdev);
5262 }
5263
5264 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5265 {
5266         size_t parsed = 0;
5267
5268         while (parsed < eir_len) {
5269                 u8 field_len = eir[0];
5270
5271                 if (field_len == 0)
5272                         return parsed;
5273
5274                 parsed += field_len + 1;
5275                 eir += field_len + 1;
5276         }
5277
5278         return eir_len;
5279 }
5280
5281 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5282                                             struct sk_buff *skb)
5283 {
5284         struct hci_ev_ext_inquiry_result *ev = edata;
5285         struct inquiry_data data;
5286         size_t eir_len;
5287         int i;
5288
5289         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5290                              flex_array_size(ev, info, ev->num)))
5291                 return;
5292
5293         bt_dev_dbg(hdev, "num %d", ev->num);
5294
5295         if (!ev->num)
5296                 return;
5297
5298         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5299                 return;
5300
5301         hci_dev_lock(hdev);
5302
5303         for (i = 0; i < ev->num; i++) {
5304                 struct extended_inquiry_info *info = &ev->info[i];
5305                 u32 flags;
5306                 bool name_known;
5307
5308                 bacpy(&data.bdaddr, &info->bdaddr);
5309                 data.pscan_rep_mode     = info->pscan_rep_mode;
5310                 data.pscan_period_mode  = info->pscan_period_mode;
5311                 data.pscan_mode         = 0x00;
5312                 memcpy(data.dev_class, info->dev_class, 3);
5313                 data.clock_offset       = info->clock_offset;
5314                 data.rssi               = info->rssi;
5315                 data.ssp_mode           = 0x01;
5316
5317                 if (hci_dev_test_flag(hdev, HCI_MGMT))
5318                         name_known = eir_get_data(info->data,
5319                                                   sizeof(info->data),
5320                                                   EIR_NAME_COMPLETE, NULL);
5321                 else
5322                         name_known = true;
5323
5324                 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5325
5326                 eir_len = eir_get_length(info->data, sizeof(info->data));
5327
5328                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5329                                   info->dev_class, info->rssi,
5330                                   flags, info->data, eir_len, NULL, 0, 0);
5331         }
5332
5333         hci_dev_unlock(hdev);
5334 }
5335
5336 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5337                                          struct sk_buff *skb)
5338 {
5339         struct hci_ev_key_refresh_complete *ev = data;
5340         struct hci_conn *conn;
5341
5342         bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5343                    __le16_to_cpu(ev->handle));
5344
5345         hci_dev_lock(hdev);
5346
5347         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5348         if (!conn)
5349                 goto unlock;
5350
5351         /* For BR/EDR the necessary steps are taken through the
5352          * auth_complete event.
5353          */
5354         if (conn->type != LE_LINK)
5355                 goto unlock;
5356
5357         if (!ev->status)
5358                 conn->sec_level = conn->pending_sec_level;
5359
5360         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5361
5362         if (ev->status && conn->state == BT_CONNECTED) {
5363                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5364                 hci_conn_drop(conn);
5365                 goto unlock;
5366         }
5367
5368         if (conn->state == BT_CONFIG) {
5369                 if (!ev->status)
5370                         conn->state = BT_CONNECTED;
5371
5372                 hci_connect_cfm(conn, ev->status);
5373                 hci_conn_drop(conn);
5374         } else {
5375                 hci_auth_cfm(conn, ev->status);
5376
5377                 hci_conn_hold(conn);
5378                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5379                 hci_conn_drop(conn);
5380         }
5381
5382 unlock:
5383         hci_dev_unlock(hdev);
5384 }
5385
5386 static u8 hci_get_auth_req(struct hci_conn *conn)
5387 {
5388         /* If remote requests no-bonding follow that lead */
5389         if (conn->remote_auth == HCI_AT_NO_BONDING ||
5390             conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5391                 return conn->remote_auth | (conn->auth_type & 0x01);
5392
5393         /* If both remote and local have enough IO capabilities, require
5394          * MITM protection
5395          */
5396         if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5397             conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5398                 return conn->remote_auth | 0x01;
5399
5400         /* No MITM protection possible so ignore remote requirement */
5401         return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5402 }
5403
5404 static u8 bredr_oob_data_present(struct hci_conn *conn)
5405 {
5406         struct hci_dev *hdev = conn->hdev;
5407         struct oob_data *data;
5408
5409         data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5410         if (!data)
5411                 return 0x00;
5412
5413         if (bredr_sc_enabled(hdev)) {
5414                 /* When Secure Connections is enabled, then just
5415                  * return the present value stored with the OOB
5416                  * data. The stored value contains the right present
5417                  * information. However it can only be trusted when
5418                  * not in Secure Connection Only mode.
5419                  */
5420                 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5421                         return data->present;
5422
5423                 /* When Secure Connections Only mode is enabled, then
5424                  * the P-256 values are required. If they are not
5425                  * available, then do not declare that OOB data is
5426                  * present.
5427                  */
5428                 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) ||
5429                     !crypto_memneq(data->hash256, ZERO_KEY, 16))
5430                         return 0x00;
5431
5432                 return 0x02;
5433         }
5434
5435         /* When Secure Connections is not enabled or actually
5436          * not supported by the hardware, then check that if
5437          * P-192 data values are present.
5438          */
5439         if (!crypto_memneq(data->rand192, ZERO_KEY, 16) ||
5440             !crypto_memneq(data->hash192, ZERO_KEY, 16))
5441                 return 0x00;
5442
5443         return 0x01;
5444 }
5445
5446 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5447                                     struct sk_buff *skb)
5448 {
5449         struct hci_ev_io_capa_request *ev = data;
5450         struct hci_conn *conn;
5451
5452         bt_dev_dbg(hdev, "");
5453
5454         hci_dev_lock(hdev);
5455
5456         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5457         if (!conn || !hci_conn_ssp_enabled(conn))
5458                 goto unlock;
5459
5460         hci_conn_hold(conn);
5461
5462         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5463                 goto unlock;
5464
5465         /* Allow pairing if we're pairable, the initiators of the
5466          * pairing or if the remote is not requesting bonding.
5467          */
5468         if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5469             test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5470             (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5471                 struct hci_cp_io_capability_reply cp;
5472
5473                 bacpy(&cp.bdaddr, &ev->bdaddr);
5474                 /* Change the IO capability from KeyboardDisplay
5475                  * to DisplayYesNo as it is not supported by BT spec. */
5476                 cp.capability = (conn->io_capability == 0x04) ?
5477                                 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5478
5479                 /* If we are initiators, there is no remote information yet */
5480                 if (conn->remote_auth == 0xff) {
5481                         /* Request MITM protection if our IO caps allow it
5482                          * except for the no-bonding case.
5483                          */
5484                         if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5485                             conn->auth_type != HCI_AT_NO_BONDING)
5486                                 conn->auth_type |= 0x01;
5487                 } else {
5488                         conn->auth_type = hci_get_auth_req(conn);
5489                 }
5490
5491                 /* If we're not bondable, force one of the non-bondable
5492                  * authentication requirement values.
5493                  */
5494                 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5495                         conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5496
5497                 cp.authentication = conn->auth_type;
5498                 cp.oob_data = bredr_oob_data_present(conn);
5499
5500                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5501                              sizeof(cp), &cp);
5502         } else {
5503                 struct hci_cp_io_capability_neg_reply cp;
5504
5505                 bacpy(&cp.bdaddr, &ev->bdaddr);
5506                 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5507
5508                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5509                              sizeof(cp), &cp);
5510         }
5511
5512 unlock:
5513         hci_dev_unlock(hdev);
5514 }
5515
5516 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5517                                   struct sk_buff *skb)
5518 {
5519         struct hci_ev_io_capa_reply *ev = data;
5520         struct hci_conn *conn;
5521
5522         bt_dev_dbg(hdev, "");
5523
5524         hci_dev_lock(hdev);
5525
5526         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5527         if (!conn)
5528                 goto unlock;
5529
5530         conn->remote_cap = ev->capability;
5531         conn->remote_auth = ev->authentication;
5532
5533 unlock:
5534         hci_dev_unlock(hdev);
5535 }
5536
5537 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5538                                          struct sk_buff *skb)
5539 {
5540         struct hci_ev_user_confirm_req *ev = data;
5541         int loc_mitm, rem_mitm, confirm_hint = 0;
5542         struct hci_conn *conn;
5543
5544         bt_dev_dbg(hdev, "");
5545
5546         hci_dev_lock(hdev);
5547
5548         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5549                 goto unlock;
5550
5551         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5552         if (!conn)
5553                 goto unlock;
5554
5555         loc_mitm = (conn->auth_type & 0x01);
5556         rem_mitm = (conn->remote_auth & 0x01);
5557
5558         /* If we require MITM but the remote device can't provide that
5559          * (it has NoInputNoOutput) then reject the confirmation
5560          * request. We check the security level here since it doesn't
5561          * necessarily match conn->auth_type.
5562          */
5563         if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5564             conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5565                 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5566                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5567                              sizeof(ev->bdaddr), &ev->bdaddr);
5568                 goto unlock;
5569         }
5570
5571         /* If no side requires MITM protection; auto-accept */
5572         if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5573             (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5574
5575                 /* If we're not the initiators request authorization to
5576                  * proceed from user space (mgmt_user_confirm with
5577                  * confirm_hint set to 1). The exception is if neither
5578                  * side had MITM or if the local IO capability is
5579                  * NoInputNoOutput, in which case we do auto-accept
5580                  */
5581                 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5582                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5583                     (loc_mitm || rem_mitm)) {
5584                         bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5585                         confirm_hint = 1;
5586                         goto confirm;
5587                 }
5588
5589                 /* If there already exists link key in local host, leave the
5590                  * decision to user space since the remote device could be
5591                  * legitimate or malicious.
5592                  */
5593                 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5594                         bt_dev_dbg(hdev, "Local host already has link key");
5595                         confirm_hint = 1;
5596                         goto confirm;
5597                 }
5598
5599                 BT_DBG("Auto-accept of user confirmation with %ums delay",
5600                        hdev->auto_accept_delay);
5601
5602                 if (hdev->auto_accept_delay > 0) {
5603                         int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5604                         queue_delayed_work(conn->hdev->workqueue,
5605                                            &conn->auto_accept_work, delay);
5606                         goto unlock;
5607                 }
5608
5609                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5610                              sizeof(ev->bdaddr), &ev->bdaddr);
5611                 goto unlock;
5612         }
5613
5614 confirm:
5615         mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5616                                   le32_to_cpu(ev->passkey), confirm_hint);
5617
5618 unlock:
5619         hci_dev_unlock(hdev);
5620 }
5621
5622 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5623                                          struct sk_buff *skb)
5624 {
5625         struct hci_ev_user_passkey_req *ev = data;
5626
5627         bt_dev_dbg(hdev, "");
5628
5629         if (hci_dev_test_flag(hdev, HCI_MGMT))
5630                 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5631 }
5632
5633 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5634                                         struct sk_buff *skb)
5635 {
5636         struct hci_ev_user_passkey_notify *ev = data;
5637         struct hci_conn *conn;
5638
5639         bt_dev_dbg(hdev, "");
5640
5641         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5642         if (!conn)
5643                 return;
5644
5645         conn->passkey_notify = __le32_to_cpu(ev->passkey);
5646         conn->passkey_entered = 0;
5647
5648         if (hci_dev_test_flag(hdev, HCI_MGMT))
5649                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5650                                          conn->dst_type, conn->passkey_notify,
5651                                          conn->passkey_entered);
5652 }
5653
5654 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5655                                     struct sk_buff *skb)
5656 {
5657         struct hci_ev_keypress_notify *ev = data;
5658         struct hci_conn *conn;
5659
5660         bt_dev_dbg(hdev, "");
5661
5662         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5663         if (!conn)
5664                 return;
5665
5666         switch (ev->type) {
5667         case HCI_KEYPRESS_STARTED:
5668                 conn->passkey_entered = 0;
5669                 return;
5670
5671         case HCI_KEYPRESS_ENTERED:
5672                 conn->passkey_entered++;
5673                 break;
5674
5675         case HCI_KEYPRESS_ERASED:
5676                 conn->passkey_entered--;
5677                 break;
5678
5679         case HCI_KEYPRESS_CLEARED:
5680                 conn->passkey_entered = 0;
5681                 break;
5682
5683         case HCI_KEYPRESS_COMPLETED:
5684                 return;
5685         }
5686
5687         if (hci_dev_test_flag(hdev, HCI_MGMT))
5688                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5689                                          conn->dst_type, conn->passkey_notify,
5690                                          conn->passkey_entered);
5691 }
5692
5693 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5694                                          struct sk_buff *skb)
5695 {
5696         struct hci_ev_simple_pair_complete *ev = data;
5697         struct hci_conn *conn;
5698
5699         bt_dev_dbg(hdev, "");
5700
5701         hci_dev_lock(hdev);
5702
5703         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5704         if (!conn || !hci_conn_ssp_enabled(conn))
5705                 goto unlock;
5706
5707         /* Reset the authentication requirement to unknown */
5708         conn->remote_auth = 0xff;
5709
5710         /* To avoid duplicate auth_failed events to user space we check
5711          * the HCI_CONN_AUTH_PEND flag which will be set if we
5712          * initiated the authentication. A traditional auth_complete
5713          * event gets always produced as initiator and is also mapped to
5714          * the mgmt_auth_failed event */
5715         if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5716                 mgmt_auth_failed(conn, ev->status);
5717
5718         hci_conn_drop(conn);
5719
5720 unlock:
5721         hci_dev_unlock(hdev);
5722 }
5723
5724 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5725                                          struct sk_buff *skb)
5726 {
5727         struct hci_ev_remote_host_features *ev = data;
5728         struct inquiry_entry *ie;
5729         struct hci_conn *conn;
5730
5731         bt_dev_dbg(hdev, "");
5732
5733         hci_dev_lock(hdev);
5734
5735         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5736         if (conn)
5737                 memcpy(conn->features[1], ev->features, 8);
5738
5739         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5740         if (ie)
5741                 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5742
5743         hci_dev_unlock(hdev);
5744 }
5745
5746 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5747                                             struct sk_buff *skb)
5748 {
5749         struct hci_ev_remote_oob_data_request *ev = edata;
5750         struct oob_data *data;
5751
5752         bt_dev_dbg(hdev, "");
5753
5754         hci_dev_lock(hdev);
5755
5756         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5757                 goto unlock;
5758
5759         data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5760         if (!data) {
5761                 struct hci_cp_remote_oob_data_neg_reply cp;
5762
5763                 bacpy(&cp.bdaddr, &ev->bdaddr);
5764                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5765                              sizeof(cp), &cp);
5766                 goto unlock;
5767         }
5768
5769         if (bredr_sc_enabled(hdev)) {
5770                 struct hci_cp_remote_oob_ext_data_reply cp;
5771
5772                 bacpy(&cp.bdaddr, &ev->bdaddr);
5773                 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5774                         memset(cp.hash192, 0, sizeof(cp.hash192));
5775                         memset(cp.rand192, 0, sizeof(cp.rand192));
5776                 } else {
5777                         memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5778                         memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5779                 }
5780                 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5781                 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5782
5783                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5784                              sizeof(cp), &cp);
5785         } else {
5786                 struct hci_cp_remote_oob_data_reply cp;
5787
5788                 bacpy(&cp.bdaddr, &ev->bdaddr);
5789                 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5790                 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5791
5792                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5793                              sizeof(cp), &cp);
5794         }
5795
5796 unlock:
5797         hci_dev_unlock(hdev);
5798 }
5799
5800 #if IS_ENABLED(CONFIG_BT_HS)
5801 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5802                                   struct sk_buff *skb)
5803 {
5804         struct hci_ev_channel_selected *ev = data;
5805         struct hci_conn *hcon;
5806
5807         bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5808
5809         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5810         if (!hcon)
5811                 return;
5812
5813         amp_read_loc_assoc_final_data(hdev, hcon);
5814 }
5815
5816 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5817                                       struct sk_buff *skb)
5818 {
5819         struct hci_ev_phy_link_complete *ev = data;
5820         struct hci_conn *hcon, *bredr_hcon;
5821
5822         bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5823                    ev->status);
5824
5825         hci_dev_lock(hdev);
5826
5827         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5828         if (!hcon)
5829                 goto unlock;
5830
5831         if (!hcon->amp_mgr)
5832                 goto unlock;
5833
5834         if (ev->status) {
5835                 hci_conn_del(hcon);
5836                 goto unlock;
5837         }
5838
5839         bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5840
5841         hcon->state = BT_CONNECTED;
5842         bacpy(&hcon->dst, &bredr_hcon->dst);
5843
5844         hci_conn_hold(hcon);
5845         hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5846         hci_conn_drop(hcon);
5847
5848         hci_debugfs_create_conn(hcon);
5849         hci_conn_add_sysfs(hcon);
5850
5851         amp_physical_cfm(bredr_hcon, hcon);
5852
5853 unlock:
5854         hci_dev_unlock(hdev);
5855 }
5856
5857 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5858                                      struct sk_buff *skb)
5859 {
5860         struct hci_ev_logical_link_complete *ev = data;
5861         struct hci_conn *hcon;
5862         struct hci_chan *hchan;
5863         struct amp_mgr *mgr;
5864
5865         bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5866                    le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5867
5868         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5869         if (!hcon)
5870                 return;
5871
5872         /* Create AMP hchan */
5873         hchan = hci_chan_create(hcon);
5874         if (!hchan)
5875                 return;
5876
5877         hchan->handle = le16_to_cpu(ev->handle);
5878         hchan->amp = true;
5879
5880         BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5881
5882         mgr = hcon->amp_mgr;
5883         if (mgr && mgr->bredr_chan) {
5884                 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5885
5886                 l2cap_chan_lock(bredr_chan);
5887
5888                 bredr_chan->conn->mtu = hdev->block_mtu;
5889                 l2cap_logical_cfm(bredr_chan, hchan, 0);
5890                 hci_conn_hold(hcon);
5891
5892                 l2cap_chan_unlock(bredr_chan);
5893         }
5894 }
5895
5896 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5897                                              struct sk_buff *skb)
5898 {
5899         struct hci_ev_disconn_logical_link_complete *ev = data;
5900         struct hci_chan *hchan;
5901
5902         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5903                    le16_to_cpu(ev->handle), ev->status);
5904
5905         if (ev->status)
5906                 return;
5907
5908         hci_dev_lock(hdev);
5909
5910         hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5911         if (!hchan || !hchan->amp)
5912                 goto unlock;
5913
5914         amp_destroy_logical_link(hchan, ev->reason);
5915
5916 unlock:
5917         hci_dev_unlock(hdev);
5918 }
5919
5920 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5921                                              struct sk_buff *skb)
5922 {
5923         struct hci_ev_disconn_phy_link_complete *ev = data;
5924         struct hci_conn *hcon;
5925
5926         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5927
5928         if (ev->status)
5929                 return;
5930
5931         hci_dev_lock(hdev);
5932
5933         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5934         if (hcon && hcon->type == AMP_LINK) {
5935                 hcon->state = BT_CLOSED;
5936                 hci_disconn_cfm(hcon, ev->reason);
5937                 hci_conn_del(hcon);
5938         }
5939
5940         hci_dev_unlock(hdev);
5941 }
5942 #endif
5943
5944 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5945                                 u8 bdaddr_type, bdaddr_t *local_rpa)
5946 {
5947         if (conn->out) {
5948                 conn->dst_type = bdaddr_type;
5949                 conn->resp_addr_type = bdaddr_type;
5950                 bacpy(&conn->resp_addr, bdaddr);
5951
5952                 /* Check if the controller has set a Local RPA then it must be
5953                  * used instead or hdev->rpa.
5954                  */
5955                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5956                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5957                         bacpy(&conn->init_addr, local_rpa);
5958                 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5959                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5960                         bacpy(&conn->init_addr, &conn->hdev->rpa);
5961                 } else {
5962                         hci_copy_identity_address(conn->hdev, &conn->init_addr,
5963                                                   &conn->init_addr_type);
5964                 }
5965         } else {
5966                 conn->resp_addr_type = conn->hdev->adv_addr_type;
5967                 /* Check if the controller has set a Local RPA then it must be
5968                  * used instead or hdev->rpa.
5969                  */
5970                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5971                         conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5972                         bacpy(&conn->resp_addr, local_rpa);
5973                 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5974                         /* In case of ext adv, resp_addr will be updated in
5975                          * Adv Terminated event.
5976                          */
5977                         if (!ext_adv_capable(conn->hdev))
5978                                 bacpy(&conn->resp_addr,
5979                                       &conn->hdev->random_addr);
5980                 } else {
5981                         bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5982                 }
5983
5984                 conn->init_addr_type = bdaddr_type;
5985                 bacpy(&conn->init_addr, bdaddr);
5986
5987                 /* For incoming connections, set the default minimum
5988                  * and maximum connection interval. They will be used
5989                  * to check if the parameters are in range and if not
5990                  * trigger the connection update procedure.
5991                  */
5992                 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5993                 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5994         }
5995 }
5996
5997 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5998                                  bdaddr_t *bdaddr, u8 bdaddr_type,
5999                                  bdaddr_t *local_rpa, u8 role, u16 handle,
6000                                  u16 interval, u16 latency,
6001                                  u16 supervision_timeout)
6002 {
6003         struct hci_conn_params *params;
6004         struct hci_conn *conn;
6005         struct smp_irk *irk;
6006         u8 addr_type;
6007
6008         hci_dev_lock(hdev);
6009
6010         /* All controllers implicitly stop advertising in the event of a
6011          * connection, so ensure that the state bit is cleared.
6012          */
6013         hci_dev_clear_flag(hdev, HCI_LE_ADV);
6014
6015         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
6016         if (!conn) {
6017                 /* In case of error status and there is no connection pending
6018                  * just unlock as there is nothing to cleanup.
6019                  */
6020                 if (status)
6021                         goto unlock;
6022
6023                 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role);
6024                 if (!conn) {
6025                         bt_dev_err(hdev, "no memory for new connection");
6026                         goto unlock;
6027                 }
6028
6029                 conn->dst_type = bdaddr_type;
6030
6031                 /* If we didn't have a hci_conn object previously
6032                  * but we're in central role this must be something
6033                  * initiated using an accept list. Since accept list based
6034                  * connections are not "first class citizens" we don't
6035                  * have full tracking of them. Therefore, we go ahead
6036                  * with a "best effort" approach of determining the
6037                  * initiator address based on the HCI_PRIVACY flag.
6038                  */
6039                 if (conn->out) {
6040                         conn->resp_addr_type = bdaddr_type;
6041                         bacpy(&conn->resp_addr, bdaddr);
6042                         if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
6043                                 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
6044                                 bacpy(&conn->init_addr, &hdev->rpa);
6045                         } else {
6046                                 hci_copy_identity_address(hdev,
6047                                                           &conn->init_addr,
6048                                                           &conn->init_addr_type);
6049                         }
6050                 }
6051         } else {
6052                 cancel_delayed_work(&conn->le_conn_timeout);
6053         }
6054
6055         /* The HCI_LE_Connection_Complete event is only sent once per connection.
6056          * Processing it more than once per connection can corrupt kernel memory.
6057          *
6058          * As the connection handle is set here for the first time, it indicates
6059          * whether the connection is already set up.
6060          */
6061         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
6062                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
6063                 goto unlock;
6064         }
6065
6066         le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
6067
6068         /* Lookup the identity address from the stored connection
6069          * address and address type.
6070          *
6071          * When establishing connections to an identity address, the
6072          * connection procedure will store the resolvable random
6073          * address first. Now if it can be converted back into the
6074          * identity address, start using the identity address from
6075          * now on.
6076          */
6077         irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
6078         if (irk) {
6079                 bacpy(&conn->dst, &irk->bdaddr);
6080                 conn->dst_type = irk->addr_type;
6081         }
6082
6083         conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
6084
6085         /* All connection failure handling is taken care of by the
6086          * hci_conn_failed function which is triggered by the HCI
6087          * request completion callbacks used for connecting.
6088          */
6089         if (status || hci_conn_set_handle(conn, handle))
6090                 goto unlock;
6091
6092         /* Drop the connection if it has been aborted */
6093         if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
6094                 hci_conn_drop(conn);
6095                 goto unlock;
6096         }
6097
6098         if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
6099                 addr_type = BDADDR_LE_PUBLIC;
6100         else
6101                 addr_type = BDADDR_LE_RANDOM;
6102
6103         /* Drop the connection if the device is blocked */
6104         if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
6105                 hci_conn_drop(conn);
6106                 goto unlock;
6107         }
6108
6109         if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
6110                 mgmt_device_connected(hdev, conn, NULL, 0);
6111
6112         conn->sec_level = BT_SECURITY_LOW;
6113         conn->state = BT_CONFIG;
6114
6115         /* Store current advertising instance as connection advertising instance
6116          * when sotfware rotation is in use so it can be re-enabled when
6117          * disconnected.
6118          */
6119         if (!ext_adv_capable(hdev))
6120                 conn->adv_instance = hdev->cur_adv_instance;
6121
6122         conn->le_conn_interval = interval;
6123         conn->le_conn_latency = latency;
6124         conn->le_supv_timeout = supervision_timeout;
6125
6126         hci_debugfs_create_conn(conn);
6127         hci_conn_add_sysfs(conn);
6128
6129         /* The remote features procedure is defined for central
6130          * role only. So only in case of an initiated connection
6131          * request the remote features.
6132          *
6133          * If the local controller supports peripheral-initiated features
6134          * exchange, then requesting the remote features in peripheral
6135          * role is possible. Otherwise just transition into the
6136          * connected state without requesting the remote features.
6137          */
6138         if (conn->out ||
6139             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
6140                 struct hci_cp_le_read_remote_features cp;
6141
6142                 cp.handle = __cpu_to_le16(conn->handle);
6143
6144                 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
6145                              sizeof(cp), &cp);
6146
6147                 hci_conn_hold(conn);
6148         } else {
6149                 conn->state = BT_CONNECTED;
6150                 hci_connect_cfm(conn, status);
6151         }
6152
6153         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
6154                                            conn->dst_type);
6155         if (params) {
6156                 hci_pend_le_list_del_init(params);
6157                 if (params->conn) {
6158                         hci_conn_drop(params->conn);
6159                         hci_conn_put(params->conn);
6160                         params->conn = NULL;
6161                 }
6162         }
6163
6164 unlock:
6165         hci_update_passive_scan(hdev);
6166         hci_dev_unlock(hdev);
6167 }
6168
6169 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
6170                                      struct sk_buff *skb)
6171 {
6172         struct hci_ev_le_conn_complete *ev = data;
6173
6174         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6175
6176         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6177                              NULL, ev->role, le16_to_cpu(ev->handle),
6178                              le16_to_cpu(ev->interval),
6179                              le16_to_cpu(ev->latency),
6180                              le16_to_cpu(ev->supervision_timeout));
6181 }
6182
6183 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
6184                                          struct sk_buff *skb)
6185 {
6186         struct hci_ev_le_enh_conn_complete *ev = data;
6187
6188         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6189
6190         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6191                              &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
6192                              le16_to_cpu(ev->interval),
6193                              le16_to_cpu(ev->latency),
6194                              le16_to_cpu(ev->supervision_timeout));
6195 }
6196
6197 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6198                                     struct sk_buff *skb)
6199 {
6200         struct hci_evt_le_ext_adv_set_term *ev = data;
6201         struct hci_conn *conn;
6202         struct adv_info *adv, *n;
6203
6204         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6205
6206         /* The Bluetooth Core 5.3 specification clearly states that this event
6207          * shall not be sent when the Host disables the advertising set. So in
6208          * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6209          *
6210          * When the Host disables an advertising set, all cleanup is done via
6211          * its command callback and not needed to be duplicated here.
6212          */
6213         if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6214                 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6215                 return;
6216         }
6217
6218         hci_dev_lock(hdev);
6219
6220         adv = hci_find_adv_instance(hdev, ev->handle);
6221
6222         if (ev->status) {
6223                 if (!adv)
6224                         goto unlock;
6225
6226                 /* Remove advertising as it has been terminated */
6227                 hci_remove_adv_instance(hdev, ev->handle);
6228                 mgmt_advertising_removed(NULL, hdev, ev->handle);
6229
6230                 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6231                         if (adv->enabled)
6232                                 goto unlock;
6233                 }
6234
6235                 /* We are no longer advertising, clear HCI_LE_ADV */
6236                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6237                 goto unlock;
6238         }
6239
6240         if (adv)
6241                 adv->enabled = false;
6242
6243         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6244         if (conn) {
6245                 /* Store handle in the connection so the correct advertising
6246                  * instance can be re-enabled when disconnected.
6247                  */
6248                 conn->adv_instance = ev->handle;
6249
6250                 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6251                     bacmp(&conn->resp_addr, BDADDR_ANY))
6252                         goto unlock;
6253
6254                 if (!ev->handle) {
6255                         bacpy(&conn->resp_addr, &hdev->random_addr);
6256                         goto unlock;
6257                 }
6258
6259                 if (adv)
6260                         bacpy(&conn->resp_addr, &adv->random_addr);
6261         }
6262
6263 unlock:
6264         hci_dev_unlock(hdev);
6265 }
6266
6267 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6268                                             struct sk_buff *skb)
6269 {
6270         struct hci_ev_le_conn_update_complete *ev = data;
6271         struct hci_conn *conn;
6272
6273         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6274
6275         if (ev->status)
6276                 return;
6277
6278         hci_dev_lock(hdev);
6279
6280         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6281         if (conn) {
6282 #ifdef TIZEN_BT
6283                 if (ev->status) {
6284                         hci_dev_unlock(hdev);
6285                         mgmt_le_conn_update_failed(hdev, &conn->dst,
6286                                 conn->type, conn->dst_type, ev->status);
6287                         return;
6288                 }
6289 #endif
6290                 conn->le_conn_interval = le16_to_cpu(ev->interval);
6291                 conn->le_conn_latency = le16_to_cpu(ev->latency);
6292                 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6293         }
6294
6295         hci_dev_unlock(hdev);
6296
6297 #ifdef TIZEN_BT
6298         mgmt_le_conn_updated(hdev, &conn->dst, conn->type,
6299                                 conn->dst_type, conn->le_conn_interval,
6300                                 conn->le_conn_latency, conn->le_supv_timeout);
6301 #endif
6302 }
6303
6304 /* This function requires the caller holds hdev->lock */
6305 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6306                                               bdaddr_t *addr,
6307                                               u8 addr_type, bool addr_resolved,
6308                                               u8 adv_type)
6309 {
6310         struct hci_conn *conn;
6311         struct hci_conn_params *params;
6312
6313         /* If the event is not connectable don't proceed further */
6314         if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6315                 return NULL;
6316
6317         /* Ignore if the device is blocked or hdev is suspended */
6318         if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6319             hdev->suspended)
6320                 return NULL;
6321
6322         /* Most controller will fail if we try to create new connections
6323          * while we have an existing one in peripheral role.
6324          */
6325         if (hdev->conn_hash.le_num_peripheral > 0 &&
6326             (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6327              !(hdev->le_states[3] & 0x10)))
6328                 return NULL;
6329
6330         /* If we're not connectable only connect devices that we have in
6331          * our pend_le_conns list.
6332          */
6333         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6334                                            addr_type);
6335         if (!params)
6336                 return NULL;
6337
6338         if (!params->explicit_connect) {
6339                 switch (params->auto_connect) {
6340                 case HCI_AUTO_CONN_DIRECT:
6341                         /* Only devices advertising with ADV_DIRECT_IND are
6342                          * triggering a connection attempt. This is allowing
6343                          * incoming connections from peripheral devices.
6344                          */
6345                         if (adv_type != LE_ADV_DIRECT_IND)
6346                                 return NULL;
6347                         break;
6348                 case HCI_AUTO_CONN_ALWAYS:
6349                         /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6350                          * are triggering a connection attempt. This means
6351                          * that incoming connections from peripheral device are
6352                          * accepted and also outgoing connections to peripheral
6353                          * devices are established when found.
6354                          */
6355                         break;
6356                 default:
6357                         return NULL;
6358                 }
6359         }
6360
6361         conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6362                               BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6363                               HCI_ROLE_MASTER);
6364         if (!IS_ERR(conn)) {
6365                 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6366                  * by higher layer that tried to connect, if no then
6367                  * store the pointer since we don't really have any
6368                  * other owner of the object besides the params that
6369                  * triggered it. This way we can abort the connection if
6370                  * the parameters get removed and keep the reference
6371                  * count consistent once the connection is established.
6372                  */
6373
6374                 if (!params->explicit_connect)
6375                         params->conn = hci_conn_get(conn);
6376
6377                 return conn;
6378         }
6379
6380         switch (PTR_ERR(conn)) {
6381         case -EBUSY:
6382                 /* If hci_connect() returns -EBUSY it means there is already
6383                  * an LE connection attempt going on. Since controllers don't
6384                  * support more than one connection attempt at the time, we
6385                  * don't consider this an error case.
6386                  */
6387                 break;
6388         default:
6389                 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6390                 return NULL;
6391         }
6392
6393         return NULL;
6394 }
6395
6396 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6397                                u8 bdaddr_type, bdaddr_t *direct_addr,
6398                                u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6399                                bool ext_adv, bool ctl_time, u64 instant)
6400 {
6401 #ifndef TIZEN_BT
6402         struct discovery_state *d = &hdev->discovery;
6403         bool match;
6404 #endif
6405         struct smp_irk *irk;
6406         struct hci_conn *conn;
6407         bool bdaddr_resolved;
6408         u32 flags;
6409         u8 *ptr;
6410
6411         switch (type) {
6412         case LE_ADV_IND:
6413         case LE_ADV_DIRECT_IND:
6414         case LE_ADV_SCAN_IND:
6415         case LE_ADV_NONCONN_IND:
6416         case LE_ADV_SCAN_RSP:
6417                 break;
6418         default:
6419                 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6420                                        "type: 0x%02x", type);
6421                 return;
6422         }
6423
6424         if (len > max_adv_len(hdev)) {
6425                 bt_dev_err_ratelimited(hdev,
6426                                        "adv larger than maximum supported");
6427                 return;
6428         }
6429
6430         /* Find the end of the data in case the report contains padded zero
6431          * bytes at the end causing an invalid length value.
6432          *
6433          * When data is NULL, len is 0 so there is no need for extra ptr
6434          * check as 'ptr < data + 0' is already false in such case.
6435          */
6436         for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6437                 if (ptr + 1 + *ptr > data + len)
6438                         break;
6439         }
6440
6441         /* Adjust for actual length. This handles the case when remote
6442          * device is advertising with incorrect data length.
6443          */
6444         len = ptr - data;
6445
6446         /* If the direct address is present, then this report is from
6447          * a LE Direct Advertising Report event. In that case it is
6448          * important to see if the address is matching the local
6449          * controller address.
6450          */
6451         if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6452                 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6453                                                   &bdaddr_resolved);
6454
6455                 /* Only resolvable random addresses are valid for these
6456                  * kind of reports and others can be ignored.
6457                  */
6458                 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6459                         return;
6460
6461                 /* If the controller is not using resolvable random
6462                  * addresses, then this report can be ignored.
6463                  */
6464                 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6465                         return;
6466
6467                 /* If the local IRK of the controller does not match
6468                  * with the resolvable random address provided, then
6469                  * this report can be ignored.
6470                  */
6471                 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6472                         return;
6473         }
6474
6475         /* Check if we need to convert to identity address */
6476         irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6477         if (irk) {
6478                 bdaddr = &irk->bdaddr;
6479                 bdaddr_type = irk->addr_type;
6480         }
6481
6482         bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6483
6484         /* Check if we have been requested to connect to this device.
6485          *
6486          * direct_addr is set only for directed advertising reports (it is NULL
6487          * for advertising reports) and is already verified to be RPA above.
6488          */
6489         conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6490                                      type);
6491         if (!ext_adv && conn && type == LE_ADV_IND &&
6492             len <= max_adv_len(hdev)) {
6493                 /* Store report for later inclusion by
6494                  * mgmt_device_connected
6495                  */
6496                 memcpy(conn->le_adv_data, data, len);
6497                 conn->le_adv_data_len = len;
6498         }
6499
6500         if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6501                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6502         else
6503                 flags = 0;
6504
6505         /* All scan results should be sent up for Mesh systems */
6506         if (hci_dev_test_flag(hdev, HCI_MESH)) {
6507                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6508                                   rssi, flags, data, len, NULL, 0, instant);
6509                 return;
6510         }
6511
6512         /* Passive scanning shouldn't trigger any device found events,
6513          * except for devices marked as CONN_REPORT for which we do send
6514          * device found events, or advertisement monitoring requested.
6515          */
6516         if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6517                 if (type == LE_ADV_DIRECT_IND)
6518                         return;
6519
6520 #ifndef TIZEN_BT
6521                 /* Handle all adv packet in platform */
6522                 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6523                                                bdaddr, bdaddr_type) &&
6524                     idr_is_empty(&hdev->adv_monitors_idr))
6525                         return;
6526 #endif
6527
6528 #ifdef TIZEN_BT
6529                 mgmt_le_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6530                                   rssi, flags, data, len, NULL, 0, type);
6531 #else
6532                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6533                                   rssi, flags, data, len, NULL, 0, 0);
6534 #endif
6535                 return;
6536         }
6537
6538         /* When receiving a scan response, then there is no way to
6539          * know if the remote device is connectable or not. However
6540          * since scan responses are merged with a previously seen
6541          * advertising report, the flags field from that report
6542          * will be used.
6543          *
6544          * In the unlikely case that a controller just sends a scan
6545          * response event that doesn't match the pending report, then
6546          * it is marked as a standalone SCAN_RSP.
6547          */
6548         if (type == LE_ADV_SCAN_RSP)
6549                 flags = MGMT_DEV_FOUND_SCAN_RSP;
6550
6551 #ifdef TIZEN_BT
6552         /* Disable adv ind and scan rsp merging */
6553         mgmt_le_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6554                                   rssi, flags, data, len, NULL, 0, type);
6555 #else
6556         /* If there's nothing pending either store the data from this
6557          * event or send an immediate device found event if the data
6558          * should not be stored for later.
6559          */
6560         if (!ext_adv && !has_pending_adv_report(hdev)) {
6561                 /* If the report will trigger a SCAN_REQ store it for
6562                  * later merging.
6563                  */
6564                 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6565                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6566                                                  rssi, flags, data, len);
6567                         return;
6568                 }
6569
6570                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6571                                   rssi, flags, data, len, NULL, 0, 0);
6572                 return;
6573         }
6574
6575         /* Check if the pending report is for the same device as the new one */
6576         match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6577                  bdaddr_type == d->last_adv_addr_type);
6578
6579         /* If the pending data doesn't match this report or this isn't a
6580          * scan response (e.g. we got a duplicate ADV_IND) then force
6581          * sending of the pending data.
6582          */
6583         if (type != LE_ADV_SCAN_RSP || !match) {
6584                 /* Send out whatever is in the cache, but skip duplicates */
6585                 if (!match)
6586                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6587                                           d->last_adv_addr_type, NULL,
6588                                           d->last_adv_rssi, d->last_adv_flags,
6589                                           d->last_adv_data,
6590                                           d->last_adv_data_len, NULL, 0, 0);
6591
6592                 /* If the new report will trigger a SCAN_REQ store it for
6593                  * later merging.
6594                  */
6595                 if (!ext_adv && (type == LE_ADV_IND ||
6596                                  type == LE_ADV_SCAN_IND)) {
6597                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6598                                                  rssi, flags, data, len);
6599                         return;
6600                 }
6601
6602                 /* The advertising reports cannot be merged, so clear
6603                  * the pending report and send out a device found event.
6604                  */
6605                 clear_pending_adv_report(hdev);
6606                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6607                                   rssi, flags, data, len, NULL, 0, 0);
6608                 return;
6609         }
6610
6611         /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6612          * the new event is a SCAN_RSP. We can therefore proceed with
6613          * sending a merged device found event.
6614          */
6615         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6616                           d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6617                           d->last_adv_data, d->last_adv_data_len, data, len, 0);
6618         clear_pending_adv_report(hdev);
6619 #endif
6620 }
6621
6622 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6623                                   struct sk_buff *skb)
6624 {
6625         struct hci_ev_le_advertising_report *ev = data;
6626         u64 instant = jiffies;
6627
6628         if (!ev->num)
6629                 return;
6630
6631         hci_dev_lock(hdev);
6632
6633         while (ev->num--) {
6634                 struct hci_ev_le_advertising_info *info;
6635                 s8 rssi;
6636
6637                 info = hci_le_ev_skb_pull(hdev, skb,
6638                                           HCI_EV_LE_ADVERTISING_REPORT,
6639                                           sizeof(*info));
6640                 if (!info)
6641                         break;
6642
6643                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6644                                         info->length + 1))
6645                         break;
6646
6647                 if (info->length <= max_adv_len(hdev)) {
6648                         rssi = info->data[info->length];
6649                         process_adv_report(hdev, info->type, &info->bdaddr,
6650                                            info->bdaddr_type, NULL, 0, rssi,
6651                                            info->data, info->length, false,
6652                                            false, instant);
6653                 } else {
6654                         bt_dev_err(hdev, "Dropping invalid advertising data");
6655                 }
6656         }
6657
6658         hci_dev_unlock(hdev);
6659 }
6660
6661 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6662 {
6663         if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6664                 switch (evt_type) {
6665                 case LE_LEGACY_ADV_IND:
6666                         return LE_ADV_IND;
6667                 case LE_LEGACY_ADV_DIRECT_IND:
6668                         return LE_ADV_DIRECT_IND;
6669                 case LE_LEGACY_ADV_SCAN_IND:
6670                         return LE_ADV_SCAN_IND;
6671                 case LE_LEGACY_NONCONN_IND:
6672                         return LE_ADV_NONCONN_IND;
6673                 case LE_LEGACY_SCAN_RSP_ADV:
6674                 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6675                         return LE_ADV_SCAN_RSP;
6676                 }
6677
6678                 goto invalid;
6679         }
6680
6681         if (evt_type & LE_EXT_ADV_CONN_IND) {
6682                 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6683                         return LE_ADV_DIRECT_IND;
6684
6685                 return LE_ADV_IND;
6686         }
6687
6688         if (evt_type & LE_EXT_ADV_SCAN_RSP)
6689                 return LE_ADV_SCAN_RSP;
6690
6691         if (evt_type & LE_EXT_ADV_SCAN_IND)
6692                 return LE_ADV_SCAN_IND;
6693
6694         if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6695             evt_type & LE_EXT_ADV_DIRECT_IND)
6696                 return LE_ADV_NONCONN_IND;
6697
6698 invalid:
6699         bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6700                                evt_type);
6701
6702         return LE_ADV_INVALID;
6703 }
6704
6705 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6706                                       struct sk_buff *skb)
6707 {
6708         struct hci_ev_le_ext_adv_report *ev = data;
6709         u64 instant = jiffies;
6710
6711         if (!ev->num)
6712                 return;
6713
6714         hci_dev_lock(hdev);
6715
6716         while (ev->num--) {
6717                 struct hci_ev_le_ext_adv_info *info;
6718                 u8 legacy_evt_type;
6719                 u16 evt_type;
6720
6721                 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6722                                           sizeof(*info));
6723                 if (!info)
6724                         break;
6725
6726                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6727                                         info->length))
6728                         break;
6729
6730                 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK;
6731                 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6732                 if (legacy_evt_type != LE_ADV_INVALID) {
6733                         process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6734                                            info->bdaddr_type, NULL, 0,
6735                                            info->rssi, info->data, info->length,
6736                                            !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6737                                            false, instant);
6738                 }
6739         }
6740
6741         hci_dev_unlock(hdev);
6742 }
6743
6744 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6745 {
6746         struct hci_cp_le_pa_term_sync cp;
6747
6748         memset(&cp, 0, sizeof(cp));
6749         cp.handle = handle;
6750
6751         return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6752 }
6753
6754 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6755                                             struct sk_buff *skb)
6756 {
6757         struct hci_ev_le_pa_sync_established *ev = data;
6758         int mask = hdev->link_mode;
6759         __u8 flags = 0;
6760         struct hci_conn *pa_sync;
6761
6762         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6763
6764         hci_dev_lock(hdev);
6765
6766         hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6767
6768         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6769         if (!(mask & HCI_LM_ACCEPT)) {
6770                 hci_le_pa_term_sync(hdev, ev->handle);
6771                 goto unlock;
6772         }
6773
6774         if (!(flags & HCI_PROTO_DEFER))
6775                 goto unlock;
6776
6777         if (ev->status) {
6778                 /* Add connection to indicate the failed PA sync event */
6779                 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
6780                                              HCI_ROLE_SLAVE);
6781
6782                 if (!pa_sync)
6783                         goto unlock;
6784
6785                 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags);
6786
6787                 /* Notify iso layer */
6788                 hci_connect_cfm(pa_sync, ev->status);
6789         }
6790
6791 unlock:
6792         hci_dev_unlock(hdev);
6793 }
6794
6795 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data,
6796                                       struct sk_buff *skb)
6797 {
6798         struct hci_ev_le_per_adv_report *ev = data;
6799         int mask = hdev->link_mode;
6800         __u8 flags = 0;
6801
6802         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
6803
6804         hci_dev_lock(hdev);
6805
6806         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
6807         if (!(mask & HCI_LM_ACCEPT))
6808                 hci_le_pa_term_sync(hdev, ev->sync_handle);
6809
6810         hci_dev_unlock(hdev);
6811 }
6812
6813 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6814                                             struct sk_buff *skb)
6815 {
6816         struct hci_ev_le_remote_feat_complete *ev = data;
6817         struct hci_conn *conn;
6818
6819         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6820
6821         hci_dev_lock(hdev);
6822
6823         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6824         if (conn) {
6825                 if (!ev->status)
6826                         memcpy(conn->features[0], ev->features, 8);
6827
6828                 if (conn->state == BT_CONFIG) {
6829                         __u8 status;
6830
6831                         /* If the local controller supports peripheral-initiated
6832                          * features exchange, but the remote controller does
6833                          * not, then it is possible that the error code 0x1a
6834                          * for unsupported remote feature gets returned.
6835                          *
6836                          * In this specific case, allow the connection to
6837                          * transition into connected state and mark it as
6838                          * successful.
6839                          */
6840                         if (!conn->out && ev->status == 0x1a &&
6841                             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6842                                 status = 0x00;
6843                         else
6844                                 status = ev->status;
6845
6846                         conn->state = BT_CONNECTED;
6847                         hci_connect_cfm(conn, status);
6848                         hci_conn_drop(conn);
6849                 }
6850         }
6851
6852         hci_dev_unlock(hdev);
6853 }
6854
6855 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6856                                    struct sk_buff *skb)
6857 {
6858         struct hci_ev_le_ltk_req *ev = data;
6859         struct hci_cp_le_ltk_reply cp;
6860         struct hci_cp_le_ltk_neg_reply neg;
6861         struct hci_conn *conn;
6862         struct smp_ltk *ltk;
6863
6864         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6865
6866         hci_dev_lock(hdev);
6867
6868         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6869         if (conn == NULL)
6870                 goto not_found;
6871
6872         ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6873         if (!ltk)
6874                 goto not_found;
6875
6876         if (smp_ltk_is_sc(ltk)) {
6877                 /* With SC both EDiv and Rand are set to zero */
6878                 if (ev->ediv || ev->rand)
6879                         goto not_found;
6880         } else {
6881                 /* For non-SC keys check that EDiv and Rand match */
6882                 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6883                         goto not_found;
6884         }
6885
6886         memcpy(cp.ltk, ltk->val, ltk->enc_size);
6887         memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6888         cp.handle = cpu_to_le16(conn->handle);
6889
6890         conn->pending_sec_level = smp_ltk_sec_level(ltk);
6891
6892         conn->enc_key_size = ltk->enc_size;
6893
6894         hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6895
6896         /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6897          * temporary key used to encrypt a connection following
6898          * pairing. It is used during the Encrypted Session Setup to
6899          * distribute the keys. Later, security can be re-established
6900          * using a distributed LTK.
6901          */
6902         if (ltk->type == SMP_STK) {
6903                 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6904                 list_del_rcu(&ltk->list);
6905                 kfree_rcu(ltk, rcu);
6906         } else {
6907                 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6908         }
6909
6910         hci_dev_unlock(hdev);
6911
6912         return;
6913
6914 not_found:
6915         neg.handle = ev->handle;
6916         hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6917         hci_dev_unlock(hdev);
6918 }
6919
6920 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6921                                       u8 reason)
6922 {
6923         struct hci_cp_le_conn_param_req_neg_reply cp;
6924
6925         cp.handle = cpu_to_le16(handle);
6926         cp.reason = reason;
6927
6928         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6929                      &cp);
6930 }
6931
6932 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6933                                              struct sk_buff *skb)
6934 {
6935         struct hci_ev_le_remote_conn_param_req *ev = data;
6936         struct hci_cp_le_conn_param_req_reply cp;
6937         struct hci_conn *hcon;
6938         u16 handle, min, max, latency, timeout;
6939
6940         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6941
6942         handle = le16_to_cpu(ev->handle);
6943         min = le16_to_cpu(ev->interval_min);
6944         max = le16_to_cpu(ev->interval_max);
6945         latency = le16_to_cpu(ev->latency);
6946         timeout = le16_to_cpu(ev->timeout);
6947
6948         hcon = hci_conn_hash_lookup_handle(hdev, handle);
6949         if (!hcon || hcon->state != BT_CONNECTED)
6950                 return send_conn_param_neg_reply(hdev, handle,
6951                                                  HCI_ERROR_UNKNOWN_CONN_ID);
6952
6953         if (hci_check_conn_params(min, max, latency, timeout))
6954                 return send_conn_param_neg_reply(hdev, handle,
6955                                                  HCI_ERROR_INVALID_LL_PARAMS);
6956
6957         if (hcon->role == HCI_ROLE_MASTER) {
6958                 struct hci_conn_params *params;
6959                 u8 store_hint;
6960
6961                 hci_dev_lock(hdev);
6962
6963                 params = hci_conn_params_lookup(hdev, &hcon->dst,
6964                                                 hcon->dst_type);
6965                 if (params) {
6966                         params->conn_min_interval = min;
6967                         params->conn_max_interval = max;
6968                         params->conn_latency = latency;
6969                         params->supervision_timeout = timeout;
6970                         store_hint = 0x01;
6971                 } else {
6972                         store_hint = 0x00;
6973                 }
6974
6975                 hci_dev_unlock(hdev);
6976
6977                 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6978                                     store_hint, min, max, latency, timeout);
6979         }
6980
6981         cp.handle = ev->handle;
6982         cp.interval_min = ev->interval_min;
6983         cp.interval_max = ev->interval_max;
6984         cp.latency = ev->latency;
6985         cp.timeout = ev->timeout;
6986         cp.min_ce_len = 0;
6987         cp.max_ce_len = 0;
6988
6989         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6990 }
6991
6992 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6993                                          struct sk_buff *skb)
6994 {
6995         struct hci_ev_le_direct_adv_report *ev = data;
6996         u64 instant = jiffies;
6997         int i;
6998
6999         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
7000                                 flex_array_size(ev, info, ev->num)))
7001                 return;
7002
7003         if (!ev->num)
7004                 return;
7005
7006         hci_dev_lock(hdev);
7007
7008         for (i = 0; i < ev->num; i++) {
7009                 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
7010
7011                 process_adv_report(hdev, info->type, &info->bdaddr,
7012                                    info->bdaddr_type, &info->direct_addr,
7013                                    info->direct_addr_type, info->rssi, NULL, 0,
7014                                    false, false, instant);
7015         }
7016
7017         hci_dev_unlock(hdev);
7018 }
7019
7020 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
7021                                   struct sk_buff *skb)
7022 {
7023         struct hci_ev_le_phy_update_complete *ev = data;
7024         struct hci_conn *conn;
7025
7026         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7027
7028         if (ev->status)
7029                 return;
7030
7031         hci_dev_lock(hdev);
7032
7033         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
7034         if (!conn)
7035                 goto unlock;
7036
7037         conn->le_tx_phy = ev->tx_phy;
7038         conn->le_rx_phy = ev->rx_phy;
7039
7040 unlock:
7041         hci_dev_unlock(hdev);
7042 }
7043
7044 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
7045                                         struct sk_buff *skb)
7046 {
7047         struct hci_evt_le_cis_established *ev = data;
7048         struct hci_conn *conn;
7049         struct bt_iso_qos *qos;
7050         bool pending = false;
7051         u16 handle = __le16_to_cpu(ev->handle);
7052
7053         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7054
7055         hci_dev_lock(hdev);
7056
7057         conn = hci_conn_hash_lookup_handle(hdev, handle);
7058         if (!conn) {
7059                 bt_dev_err(hdev,
7060                            "Unable to find connection with handle 0x%4.4x",
7061                            handle);
7062                 goto unlock;
7063         }
7064
7065         if (conn->type != ISO_LINK) {
7066                 bt_dev_err(hdev,
7067                            "Invalid connection link type handle 0x%4.4x",
7068                            handle);
7069                 goto unlock;
7070         }
7071
7072         qos = &conn->iso_qos;
7073
7074         pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags);
7075
7076         /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */
7077         qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250;
7078         qos->ucast.out.interval = qos->ucast.in.interval;
7079
7080         switch (conn->role) {
7081         case HCI_ROLE_SLAVE:
7082                 /* Convert Transport Latency (us) to Latency (msec) */
7083                 qos->ucast.in.latency =
7084                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
7085                                           1000);
7086                 qos->ucast.out.latency =
7087                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
7088                                           1000);
7089                 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu);
7090                 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu);
7091                 qos->ucast.in.phy = ev->c_phy;
7092                 qos->ucast.out.phy = ev->p_phy;
7093                 break;
7094         case HCI_ROLE_MASTER:
7095                 /* Convert Transport Latency (us) to Latency (msec) */
7096                 qos->ucast.out.latency =
7097                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
7098                                           1000);
7099                 qos->ucast.in.latency =
7100                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
7101                                           1000);
7102                 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu);
7103                 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu);
7104                 qos->ucast.out.phy = ev->c_phy;
7105                 qos->ucast.in.phy = ev->p_phy;
7106                 break;
7107         }
7108
7109         if (!ev->status) {
7110                 conn->state = BT_CONNECTED;
7111                 hci_debugfs_create_conn(conn);
7112                 hci_conn_add_sysfs(conn);
7113                 hci_iso_setup_path(conn);
7114                 goto unlock;
7115         }
7116
7117         conn->state = BT_CLOSED;
7118         hci_connect_cfm(conn, ev->status);
7119         hci_conn_del(conn);
7120
7121 unlock:
7122         if (pending)
7123                 hci_le_create_cis_pending(hdev);
7124
7125         hci_dev_unlock(hdev);
7126 }
7127
7128 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
7129 {
7130         struct hci_cp_le_reject_cis cp;
7131
7132         memset(&cp, 0, sizeof(cp));
7133         cp.handle = handle;
7134         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
7135         hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
7136 }
7137
7138 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
7139 {
7140         struct hci_cp_le_accept_cis cp;
7141
7142         memset(&cp, 0, sizeof(cp));
7143         cp.handle = handle;
7144         hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
7145 }
7146
7147 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
7148                                struct sk_buff *skb)
7149 {
7150         struct hci_evt_le_cis_req *ev = data;
7151         u16 acl_handle, cis_handle;
7152         struct hci_conn *acl, *cis;
7153         int mask;
7154         __u8 flags = 0;
7155
7156         acl_handle = __le16_to_cpu(ev->acl_handle);
7157         cis_handle = __le16_to_cpu(ev->cis_handle);
7158
7159         bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
7160                    acl_handle, cis_handle, ev->cig_id, ev->cis_id);
7161
7162         hci_dev_lock(hdev);
7163
7164         acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
7165         if (!acl)
7166                 goto unlock;
7167
7168         mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
7169         if (!(mask & HCI_LM_ACCEPT)) {
7170                 hci_le_reject_cis(hdev, ev->cis_handle);
7171                 goto unlock;
7172         }
7173
7174         cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
7175         if (!cis) {
7176                 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE,
7177                                    cis_handle);
7178                 if (!cis) {
7179                         hci_le_reject_cis(hdev, ev->cis_handle);
7180                         goto unlock;
7181                 }
7182         }
7183
7184         cis->iso_qos.ucast.cig = ev->cig_id;
7185         cis->iso_qos.ucast.cis = ev->cis_id;
7186
7187         if (!(flags & HCI_PROTO_DEFER)) {
7188                 hci_le_accept_cis(hdev, ev->cis_handle);
7189         } else {
7190                 cis->state = BT_CONNECT2;
7191                 hci_connect_cfm(cis, 0);
7192         }
7193
7194 unlock:
7195         hci_dev_unlock(hdev);
7196 }
7197
7198 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data)
7199 {
7200         u8 handle = PTR_UINT(data);
7201
7202         return hci_le_terminate_big_sync(hdev, handle,
7203                                          HCI_ERROR_LOCAL_HOST_TERM);
7204 }
7205
7206 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
7207                                            struct sk_buff *skb)
7208 {
7209         struct hci_evt_le_create_big_complete *ev = data;
7210         struct hci_conn *conn;
7211         __u8 i = 0;
7212
7213         BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
7214
7215         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
7216                                 flex_array_size(ev, bis_handle, ev->num_bis)))
7217                 return;
7218
7219         hci_dev_lock(hdev);
7220         rcu_read_lock();
7221
7222         /* Connect all BISes that are bound to the BIG */
7223         list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
7224                 if (bacmp(&conn->dst, BDADDR_ANY) ||
7225                     conn->type != ISO_LINK ||
7226                     conn->iso_qos.bcast.big != ev->handle)
7227                         continue;
7228
7229                 if (hci_conn_set_handle(conn,
7230                                         __le16_to_cpu(ev->bis_handle[i++])))
7231                         continue;
7232
7233                 if (!ev->status) {
7234                         conn->state = BT_CONNECTED;
7235                         set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
7236                         rcu_read_unlock();
7237                         hci_debugfs_create_conn(conn);
7238                         hci_conn_add_sysfs(conn);
7239                         hci_iso_setup_path(conn);
7240                         rcu_read_lock();
7241                         continue;
7242                 }
7243
7244                 hci_connect_cfm(conn, ev->status);
7245                 rcu_read_unlock();
7246                 hci_conn_del(conn);
7247                 rcu_read_lock();
7248         }
7249
7250         rcu_read_unlock();
7251
7252         if (!ev->status && !i)
7253                 /* If no BISes have been connected for the BIG,
7254                  * terminate. This is in case all bound connections
7255                  * have been closed before the BIG creation
7256                  * has completed.
7257                  */
7258                 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
7259                                    UINT_PTR(ev->handle), NULL);
7260
7261         hci_dev_unlock(hdev);
7262 }
7263
7264 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
7265                                             struct sk_buff *skb)
7266 {
7267         struct hci_evt_le_big_sync_estabilished *ev = data;
7268         struct hci_conn *bis;
7269         struct hci_conn *pa_sync;
7270         int i;
7271
7272         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7273
7274         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7275                                 flex_array_size(ev, bis, ev->num_bis)))
7276                 return;
7277
7278         hci_dev_lock(hdev);
7279
7280         if (!ev->status) {
7281                 pa_sync = hci_conn_hash_lookup_pa_sync_big_handle(hdev, ev->handle);
7282                 if (pa_sync)
7283                         /* Also mark the BIG sync established event on the
7284                          * associated PA sync hcon
7285                          */
7286                         set_bit(HCI_CONN_BIG_SYNC, &pa_sync->flags);
7287         }
7288
7289         for (i = 0; i < ev->num_bis; i++) {
7290                 u16 handle = le16_to_cpu(ev->bis[i]);
7291                 __le32 interval;
7292
7293                 bis = hci_conn_hash_lookup_handle(hdev, handle);
7294                 if (!bis) {
7295                         bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
7296                                            HCI_ROLE_SLAVE, handle);
7297                         if (!bis)
7298                                 continue;
7299                 }
7300
7301                 if (ev->status != 0x42)
7302                         /* Mark PA sync as established */
7303                         set_bit(HCI_CONN_PA_SYNC, &bis->flags);
7304
7305                 bis->iso_qos.bcast.big = ev->handle;
7306                 memset(&interval, 0, sizeof(interval));
7307                 memcpy(&interval, ev->latency, sizeof(ev->latency));
7308                 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval);
7309                 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7310                 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7311                 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
7312
7313                 if (!ev->status) {
7314                         set_bit(HCI_CONN_BIG_SYNC, &bis->flags);
7315                         hci_iso_setup_path(bis);
7316                 }
7317         }
7318
7319         /* In case BIG sync failed, notify each failed connection to
7320          * the user after all hci connections have been added
7321          */
7322         if (ev->status)
7323                 for (i = 0; i < ev->num_bis; i++) {
7324                         u16 handle = le16_to_cpu(ev->bis[i]);
7325
7326                         bis = hci_conn_hash_lookup_handle(hdev, handle);
7327
7328                         set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags);
7329                         hci_connect_cfm(bis, ev->status);
7330                 }
7331
7332         hci_dev_unlock(hdev);
7333 }
7334
7335 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7336                                            struct sk_buff *skb)
7337 {
7338         struct hci_evt_le_big_info_adv_report *ev = data;
7339         int mask = hdev->link_mode;
7340         __u8 flags = 0;
7341         struct hci_conn *pa_sync;
7342
7343         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7344
7345         hci_dev_lock(hdev);
7346
7347         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7348         if (!(mask & HCI_LM_ACCEPT)) {
7349                 hci_le_pa_term_sync(hdev, ev->sync_handle);
7350                 goto unlock;
7351         }
7352
7353         if (!(flags & HCI_PROTO_DEFER))
7354                 goto unlock;
7355
7356         pa_sync = hci_conn_hash_lookup_pa_sync_handle
7357                         (hdev,
7358                         le16_to_cpu(ev->sync_handle));
7359
7360         if (pa_sync)
7361                 goto unlock;
7362
7363         /* Add connection to indicate the PA sync event */
7364         pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
7365                                      HCI_ROLE_SLAVE);
7366
7367         if (!pa_sync)
7368                 goto unlock;
7369
7370         pa_sync->sync_handle = le16_to_cpu(ev->sync_handle);
7371         set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags);
7372
7373         /* Notify iso layer */
7374         hci_connect_cfm(pa_sync, 0x00);
7375
7376 unlock:
7377         hci_dev_unlock(hdev);
7378 }
7379
7380 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7381 [_op] = { \
7382         .func = _func, \
7383         .min_len = _min_len, \
7384         .max_len = _max_len, \
7385 }
7386
7387 #define HCI_LE_EV(_op, _func, _len) \
7388         HCI_LE_EV_VL(_op, _func, _len, _len)
7389
7390 #define HCI_LE_EV_STATUS(_op, _func) \
7391         HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7392
7393 /* Entries in this table shall have their position according to the subevent
7394  * opcode they handle so the use of the macros above is recommend since it does
7395  * attempt to initialize at its proper index using Designated Initializers that
7396  * way events without a callback function can be ommited.
7397  */
7398 static const struct hci_le_ev {
7399         void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7400         u16  min_len;
7401         u16  max_len;
7402 } hci_le_ev_table[U8_MAX + 1] = {
7403         /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7404         HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7405                   sizeof(struct hci_ev_le_conn_complete)),
7406         /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7407         HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7408                      sizeof(struct hci_ev_le_advertising_report),
7409                      HCI_MAX_EVENT_SIZE),
7410         /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7411         HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7412                   hci_le_conn_update_complete_evt,
7413                   sizeof(struct hci_ev_le_conn_update_complete)),
7414         /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7415         HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7416                   hci_le_remote_feat_complete_evt,
7417                   sizeof(struct hci_ev_le_remote_feat_complete)),
7418         /* [0x05 = HCI_EV_LE_LTK_REQ] */
7419         HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7420                   sizeof(struct hci_ev_le_ltk_req)),
7421         /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7422         HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7423                   hci_le_remote_conn_param_req_evt,
7424                   sizeof(struct hci_ev_le_remote_conn_param_req)),
7425         /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7426         HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7427                   hci_le_enh_conn_complete_evt,
7428                   sizeof(struct hci_ev_le_enh_conn_complete)),
7429         /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7430         HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7431                      sizeof(struct hci_ev_le_direct_adv_report),
7432                      HCI_MAX_EVENT_SIZE),
7433         /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7434         HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7435                   sizeof(struct hci_ev_le_phy_update_complete)),
7436         /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7437         HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7438                      sizeof(struct hci_ev_le_ext_adv_report),
7439                      HCI_MAX_EVENT_SIZE),
7440         /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7441         HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7442                   hci_le_pa_sync_estabilished_evt,
7443                   sizeof(struct hci_ev_le_pa_sync_established)),
7444         /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */
7445         HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT,
7446                                  hci_le_per_adv_report_evt,
7447                                  sizeof(struct hci_ev_le_per_adv_report),
7448                                  HCI_MAX_EVENT_SIZE),
7449         /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7450         HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7451                   sizeof(struct hci_evt_le_ext_adv_set_term)),
7452         /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7453         HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7454                   sizeof(struct hci_evt_le_cis_established)),
7455         /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7456         HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7457                   sizeof(struct hci_evt_le_cis_req)),
7458         /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7459         HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7460                      hci_le_create_big_complete_evt,
7461                      sizeof(struct hci_evt_le_create_big_complete),
7462                      HCI_MAX_EVENT_SIZE),
7463         /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7464         HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7465                      hci_le_big_sync_established_evt,
7466                      sizeof(struct hci_evt_le_big_sync_estabilished),
7467                      HCI_MAX_EVENT_SIZE),
7468         /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7469         HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7470                      hci_le_big_info_adv_report_evt,
7471                      sizeof(struct hci_evt_le_big_info_adv_report),
7472                      HCI_MAX_EVENT_SIZE),
7473 };
7474
7475 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7476                             struct sk_buff *skb, u16 *opcode, u8 *status,
7477                             hci_req_complete_t *req_complete,
7478                             hci_req_complete_skb_t *req_complete_skb)
7479 {
7480         struct hci_ev_le_meta *ev = data;
7481         const struct hci_le_ev *subev;
7482
7483         bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7484
7485         /* Only match event if command OGF is for LE */
7486         if (hdev->sent_cmd &&
7487             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7488             hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7489                 *opcode = hci_skb_opcode(hdev->sent_cmd);
7490                 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7491                                      req_complete_skb);
7492         }
7493
7494         subev = &hci_le_ev_table[ev->subevent];
7495         if (!subev->func)
7496                 return;
7497
7498         if (skb->len < subev->min_len) {
7499                 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7500                            ev->subevent, skb->len, subev->min_len);
7501                 return;
7502         }
7503
7504         /* Just warn if the length is over max_len size it still be
7505          * possible to partially parse the event so leave to callback to
7506          * decide if that is acceptable.
7507          */
7508         if (skb->len > subev->max_len)
7509                 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7510                             ev->subevent, skb->len, subev->max_len);
7511         data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7512         if (!data)
7513                 return;
7514
7515         subev->func(hdev, data, skb);
7516 }
7517
7518 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7519                                  u8 event, struct sk_buff *skb)
7520 {
7521         struct hci_ev_cmd_complete *ev;
7522         struct hci_event_hdr *hdr;
7523
7524         if (!skb)
7525                 return false;
7526
7527         hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7528         if (!hdr)
7529                 return false;
7530
7531         if (event) {
7532                 if (hdr->evt != event)
7533                         return false;
7534                 return true;
7535         }
7536
7537         /* Check if request ended in Command Status - no way to retrieve
7538          * any extra parameters in this case.
7539          */
7540         if (hdr->evt == HCI_EV_CMD_STATUS)
7541                 return false;
7542
7543         if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7544                 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7545                            hdr->evt);
7546                 return false;
7547         }
7548
7549         ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7550         if (!ev)
7551                 return false;
7552
7553         if (opcode != __le16_to_cpu(ev->opcode)) {
7554                 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7555                        __le16_to_cpu(ev->opcode));
7556                 return false;
7557         }
7558
7559         return true;
7560 }
7561
7562 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7563                                   struct sk_buff *skb)
7564 {
7565         struct hci_ev_le_advertising_info *adv;
7566         struct hci_ev_le_direct_adv_info *direct_adv;
7567         struct hci_ev_le_ext_adv_info *ext_adv;
7568         const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7569         const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7570
7571         hci_dev_lock(hdev);
7572
7573         /* If we are currently suspended and this is the first BT event seen,
7574          * save the wake reason associated with the event.
7575          */
7576         if (!hdev->suspended || hdev->wake_reason)
7577                 goto unlock;
7578
7579         /* Default to remote wake. Values for wake_reason are documented in the
7580          * Bluez mgmt api docs.
7581          */
7582         hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7583
7584         /* Once configured for remote wakeup, we should only wake up for
7585          * reconnections. It's useful to see which device is waking us up so
7586          * keep track of the bdaddr of the connection event that woke us up.
7587          */
7588         if (event == HCI_EV_CONN_REQUEST) {
7589                 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7590                 hdev->wake_addr_type = BDADDR_BREDR;
7591         } else if (event == HCI_EV_CONN_COMPLETE) {
7592                 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7593                 hdev->wake_addr_type = BDADDR_BREDR;
7594         } else if (event == HCI_EV_LE_META) {
7595                 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7596                 u8 subevent = le_ev->subevent;
7597                 u8 *ptr = &skb->data[sizeof(*le_ev)];
7598                 u8 num_reports = *ptr;
7599
7600                 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7601                      subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7602                      subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7603                     num_reports) {
7604                         adv = (void *)(ptr + 1);
7605                         direct_adv = (void *)(ptr + 1);
7606                         ext_adv = (void *)(ptr + 1);
7607
7608                         switch (subevent) {
7609                         case HCI_EV_LE_ADVERTISING_REPORT:
7610                                 bacpy(&hdev->wake_addr, &adv->bdaddr);
7611                                 hdev->wake_addr_type = adv->bdaddr_type;
7612                                 break;
7613                         case HCI_EV_LE_DIRECT_ADV_REPORT:
7614                                 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7615                                 hdev->wake_addr_type = direct_adv->bdaddr_type;
7616                                 break;
7617                         case HCI_EV_LE_EXT_ADV_REPORT:
7618                                 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7619                                 hdev->wake_addr_type = ext_adv->bdaddr_type;
7620                                 break;
7621                         }
7622                 }
7623         } else {
7624                 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7625         }
7626
7627 unlock:
7628         hci_dev_unlock(hdev);
7629 }
7630
7631 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7632 [_op] = { \
7633         .req = false, \
7634         .func = _func, \
7635         .min_len = _min_len, \
7636         .max_len = _max_len, \
7637 }
7638
7639 #define HCI_EV(_op, _func, _len) \
7640         HCI_EV_VL(_op, _func, _len, _len)
7641
7642 #define HCI_EV_STATUS(_op, _func) \
7643         HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7644
7645 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7646 [_op] = { \
7647         .req = true, \
7648         .func_req = _func, \
7649         .min_len = _min_len, \
7650         .max_len = _max_len, \
7651 }
7652
7653 #define HCI_EV_REQ(_op, _func, _len) \
7654         HCI_EV_REQ_VL(_op, _func, _len, _len)
7655
7656 /* Entries in this table shall have their position according to the event opcode
7657  * they handle so the use of the macros above is recommend since it does attempt
7658  * to initialize at its proper index using Designated Initializers that way
7659  * events without a callback function don't have entered.
7660  */
7661 static const struct hci_ev {
7662         bool req;
7663         union {
7664                 void (*func)(struct hci_dev *hdev, void *data,
7665                              struct sk_buff *skb);
7666                 void (*func_req)(struct hci_dev *hdev, void *data,
7667                                  struct sk_buff *skb, u16 *opcode, u8 *status,
7668                                  hci_req_complete_t *req_complete,
7669                                  hci_req_complete_skb_t *req_complete_skb);
7670         };
7671         u16  min_len;
7672         u16  max_len;
7673 } hci_ev_table[U8_MAX + 1] = {
7674         /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7675         HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7676         /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7677         HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7678                   sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7679         /* [0x03 = HCI_EV_CONN_COMPLETE] */
7680         HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7681                sizeof(struct hci_ev_conn_complete)),
7682         /* [0x04 = HCI_EV_CONN_REQUEST] */
7683         HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7684                sizeof(struct hci_ev_conn_request)),
7685         /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7686         HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7687                sizeof(struct hci_ev_disconn_complete)),
7688         /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7689         HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7690                sizeof(struct hci_ev_auth_complete)),
7691         /* [0x07 = HCI_EV_REMOTE_NAME] */
7692         HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7693                sizeof(struct hci_ev_remote_name)),
7694         /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7695         HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7696                sizeof(struct hci_ev_encrypt_change)),
7697         /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7698         HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7699                hci_change_link_key_complete_evt,
7700                sizeof(struct hci_ev_change_link_key_complete)),
7701         /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7702         HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7703                sizeof(struct hci_ev_remote_features)),
7704         /* [0x0e = HCI_EV_CMD_COMPLETE] */
7705         HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7706                       sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7707         /* [0x0f = HCI_EV_CMD_STATUS] */
7708         HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7709                    sizeof(struct hci_ev_cmd_status)),
7710         /* [0x10 = HCI_EV_CMD_STATUS] */
7711         HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7712                sizeof(struct hci_ev_hardware_error)),
7713         /* [0x12 = HCI_EV_ROLE_CHANGE] */
7714         HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7715                sizeof(struct hci_ev_role_change)),
7716         /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7717         HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7718                   sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7719         /* [0x14 = HCI_EV_MODE_CHANGE] */
7720         HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7721                sizeof(struct hci_ev_mode_change)),
7722         /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7723         HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7724                sizeof(struct hci_ev_pin_code_req)),
7725         /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7726         HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7727                sizeof(struct hci_ev_link_key_req)),
7728         /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7729         HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7730                sizeof(struct hci_ev_link_key_notify)),
7731         /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7732         HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7733                sizeof(struct hci_ev_clock_offset)),
7734         /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7735         HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7736                sizeof(struct hci_ev_pkt_type_change)),
7737         /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7738         HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7739                sizeof(struct hci_ev_pscan_rep_mode)),
7740         /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7741         HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7742                   hci_inquiry_result_with_rssi_evt,
7743                   sizeof(struct hci_ev_inquiry_result_rssi),
7744                   HCI_MAX_EVENT_SIZE),
7745         /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7746         HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7747                sizeof(struct hci_ev_remote_ext_features)),
7748         /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7749         HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7750                sizeof(struct hci_ev_sync_conn_complete)),
7751         /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7752         HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7753                   hci_extended_inquiry_result_evt,
7754                   sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7755         /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7756         HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7757                sizeof(struct hci_ev_key_refresh_complete)),
7758         /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7759         HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7760                sizeof(struct hci_ev_io_capa_request)),
7761         /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7762         HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7763                sizeof(struct hci_ev_io_capa_reply)),
7764         /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7765         HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7766                sizeof(struct hci_ev_user_confirm_req)),
7767         /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7768         HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7769                sizeof(struct hci_ev_user_passkey_req)),
7770         /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7771         HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7772                sizeof(struct hci_ev_remote_oob_data_request)),
7773         /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7774         HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7775                sizeof(struct hci_ev_simple_pair_complete)),
7776         /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7777         HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7778                sizeof(struct hci_ev_user_passkey_notify)),
7779         /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7780         HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7781                sizeof(struct hci_ev_keypress_notify)),
7782         /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7783         HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7784                sizeof(struct hci_ev_remote_host_features)),
7785         /* [0x3e = HCI_EV_LE_META] */
7786         HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7787                       sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7788 #if IS_ENABLED(CONFIG_BT_HS)
7789         /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7790         HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7791                sizeof(struct hci_ev_phy_link_complete)),
7792         /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7793         HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7794                sizeof(struct hci_ev_channel_selected)),
7795         /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7796         HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7797                hci_disconn_loglink_complete_evt,
7798                sizeof(struct hci_ev_disconn_logical_link_complete)),
7799         /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7800         HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7801                sizeof(struct hci_ev_logical_link_complete)),
7802         /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7803         HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7804                hci_disconn_phylink_complete_evt,
7805                sizeof(struct hci_ev_disconn_phy_link_complete)),
7806 #endif
7807         /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7808         HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7809                sizeof(struct hci_ev_num_comp_blocks)),
7810 #ifdef TIZEN_BT
7811         /* [0xFF = HCI_EV_VENDOR_SPECIFIC] */
7812         HCI_EV(HCI_EV_VENDOR_SPECIFIC, hci_vendor_specific_evt,
7813                sizeof(struct hci_ev_vendor_specific)),
7814 #else
7815         /* [0xff = HCI_EV_VENDOR] */
7816         HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7817 #endif
7818 };
7819
7820 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7821                            u16 *opcode, u8 *status,
7822                            hci_req_complete_t *req_complete,
7823                            hci_req_complete_skb_t *req_complete_skb)
7824 {
7825         const struct hci_ev *ev = &hci_ev_table[event];
7826         void *data;
7827
7828         if (!ev->func)
7829                 return;
7830
7831         if (skb->len < ev->min_len) {
7832                 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7833                            event, skb->len, ev->min_len);
7834                 return;
7835         }
7836
7837         /* Just warn if the length is over max_len size it still be
7838          * possible to partially parse the event so leave to callback to
7839          * decide if that is acceptable.
7840          */
7841         if (skb->len > ev->max_len)
7842                 bt_dev_warn_ratelimited(hdev,
7843                                         "unexpected event 0x%2.2x length: %u > %u",
7844                                         event, skb->len, ev->max_len);
7845
7846         data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7847         if (!data)
7848                 return;
7849
7850         if (ev->req)
7851                 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7852                              req_complete_skb);
7853         else
7854                 ev->func(hdev, data, skb);
7855 }
7856
7857 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7858 {
7859         struct hci_event_hdr *hdr = (void *) skb->data;
7860         hci_req_complete_t req_complete = NULL;
7861         hci_req_complete_skb_t req_complete_skb = NULL;
7862         struct sk_buff *orig_skb = NULL;
7863         u8 status = 0, event, req_evt = 0;
7864         u16 opcode = HCI_OP_NOP;
7865
7866         if (skb->len < sizeof(*hdr)) {
7867                 bt_dev_err(hdev, "Malformed HCI Event");
7868                 goto done;
7869         }
7870
7871         kfree_skb(hdev->recv_event);
7872         hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7873
7874         event = hdr->evt;
7875         if (!event) {
7876                 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7877                             event);
7878                 goto done;
7879         }
7880
7881         /* Only match event if command OGF is not for LE */
7882         if (hdev->sent_cmd &&
7883             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7884             hci_skb_event(hdev->sent_cmd) == event) {
7885                 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7886                                      status, &req_complete, &req_complete_skb);
7887                 req_evt = event;
7888         }
7889
7890         /* If it looks like we might end up having to call
7891          * req_complete_skb, store a pristine copy of the skb since the
7892          * various handlers may modify the original one through
7893          * skb_pull() calls, etc.
7894          */
7895         if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7896             event == HCI_EV_CMD_COMPLETE)
7897                 orig_skb = skb_clone(skb, GFP_KERNEL);
7898
7899         skb_pull(skb, HCI_EVENT_HDR_SIZE);
7900
7901         /* Store wake reason if we're suspended */
7902         hci_store_wake_reason(hdev, event, skb);
7903
7904         bt_dev_dbg(hdev, "event 0x%2.2x", event);
7905
7906         hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7907                        &req_complete_skb);
7908
7909         if (req_complete) {
7910                 req_complete(hdev, status, opcode);
7911         } else if (req_complete_skb) {
7912                 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7913                         kfree_skb(orig_skb);
7914                         orig_skb = NULL;
7915                 }
7916                 req_complete_skb(hdev, status, opcode, orig_skb);
7917         }
7918
7919 done:
7920         kfree_skb(orig_skb);
7921         kfree_skb(skb);
7922         hdev->stat.evt_rx++;
7923 }