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
  30 #include <net/bluetooth/bluetooth.h>
  31 #include <net/bluetooth/hci_core.h>
  32 #include <net/bluetooth/mgmt.h>
  33
  34 #include "hci_request.h"
  35 #include "hci_debugfs.h"
  36 #include "a2mp.h"
  37 #include "amp.h"
  38 #include "smp.h"
  39 #include "msft.h"
  40 #include "eir.h"
  41
  42 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
  43                  "\x00\x00\x00\x00\x00\x00\x00\x00"
  44
  45 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000)
  46
  47 /* Handle HCI Event packets */
  48
  49 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  50                              u8 ev, size_t len)
  51 {
  52         void *data;
  53
  54         data = skb_pull_data(skb, len);
  55         if (!data)
  56                 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev);
  57
  58         return data;
  59 }
  60
  61 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  62                              u16 op, size_t len)
  63 {
  64         void *data;
  65
  66         data = skb_pull_data(skb, len);
  67         if (!data)
  68                 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op);
  69
  70         return data;
  71 }
  72
  73 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  74                                 u8 ev, size_t len)
  75 {
  76         void *data;
  77
  78         data = skb_pull_data(skb, len);
  79         if (!data)
  80                 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev);
  81
  82         return data;
  83 }
  84
  85 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data,
  86                                 struct sk_buff *skb)
  87 {
  88         struct hci_ev_status *rp = data;
  89
  90         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
  91
  92         /* It is possible that we receive Inquiry Complete event right
  93          * before we receive Inquiry Cancel Command Complete event, in
  94          * which case the latter event should have status of Command
  95          * Disallowed (0x0c). This should not be treated as error, since
  96          * we actually achieve what Inquiry Cancel wants to achieve,
  97          * which is to end the last Inquiry session.
  98          */
  99         if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) {
 100                 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command");
 101                 rp->status = 0x00;
 102         }
 103
 104         if (rp->status)
 105                 return rp->status;
 106
 107         clear_bit(HCI_INQUIRY, &hdev->flags);
 108         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
 109         wake_up_bit(&hdev->flags, HCI_INQUIRY);
 110
 111         hci_dev_lock(hdev);
 112         /* Set discovery state to stopped if we're not doing LE active
 113          * scanning.
 114          */
 115         if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
 116             hdev->le_scan_type != LE_SCAN_ACTIVE)
 117                 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
 118         hci_dev_unlock(hdev);
 119
 120         hci_conn_check_pending(hdev);
 121
 122         return rp->status;
 123 }
 124
 125 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data,
 126                               struct sk_buff *skb)
 127 {
 128         struct hci_ev_status *rp = data;
 129
 130         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 131
 132         if (rp->status)
 133                 return rp->status;
 134
 135         hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
 136
 137         return rp->status;
 138 }
 139
 140 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data,
 141                                    struct sk_buff *skb)
 142 {
 143         struct hci_ev_status *rp = data;
 144
 145         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 146
 147         if (rp->status)
 148                 return rp->status;
 149
 150         hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
 151
 152         hci_conn_check_pending(hdev);
 153
 154         return rp->status;
 155 }
 156
 157 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data,
 158                                         struct sk_buff *skb)
 159 {
 160         struct hci_ev_status *rp = data;
 161
 162         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 163
 164         return rp->status;
 165 }
 166
 167 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data,
 168                                 struct sk_buff *skb)
 169 {
 170         struct hci_rp_role_discovery *rp = data;
 171         struct hci_conn *conn;
 172
 173         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 174
 175         if (rp->status)
 176                 return rp->status;
 177
 178         hci_dev_lock(hdev);
 179
 180         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 181         if (conn)
 182                 conn->role = rp->role;
 183
 184         hci_dev_unlock(hdev);
 185
 186         return rp->status;
 187 }
 188
 189 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data,
 190                                   struct sk_buff *skb)
 191 {
 192         struct hci_rp_read_link_policy *rp = data;
 193         struct hci_conn *conn;
 194
 195         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 196
 197         if (rp->status)
 198                 return rp->status;
 199
 200         hci_dev_lock(hdev);
 201
 202         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 203         if (conn)
 204                 conn->link_policy = __le16_to_cpu(rp->policy);
 205
 206         hci_dev_unlock(hdev);
 207
 208         return rp->status;
 209 }
 210
 211 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data,
 212                                    struct sk_buff *skb)
 213 {
 214         struct hci_rp_write_link_policy *rp = data;
 215         struct hci_conn *conn;
 216         void *sent;
 217
 218         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 219
 220         if (rp->status)
 221                 return rp->status;
 222
 223         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
 224         if (!sent)
 225                 return rp->status;
 226
 227         hci_dev_lock(hdev);
 228
 229         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 230         if (conn)
 231                 conn->link_policy = get_unaligned_le16(sent + 2);
 232
 233         hci_dev_unlock(hdev);
 234
 235         return rp->status;
 236 }
 237
 238 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data,
 239                                       struct sk_buff *skb)
 240 {
 241         struct hci_rp_read_def_link_policy *rp = data;
 242
 243         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 244
 245         if (rp->status)
 246                 return rp->status;
 247
 248         hdev->link_policy = __le16_to_cpu(rp->policy);
 249
 250         return rp->status;
 251 }
 252
 253 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data,
 254                                        struct sk_buff *skb)
 255 {
 256         struct hci_ev_status *rp = data;
 257         void *sent;
 258
 259         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 260
 261         if (rp->status)
 262                 return rp->status;
 263
 264         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
 265         if (!sent)
 266                 return rp->status;
 267
 268         hdev->link_policy = get_unaligned_le16(sent);
 269
 270         return rp->status;
 271 }
 272
 273 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb)
 274 {
 275         struct hci_ev_status *rp = data;
 276
 277         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 278
 279         clear_bit(HCI_RESET, &hdev->flags);
 280
 281         if (rp->status)
 282                 return rp->status;
 283
 284         /* Reset all non-persistent flags */
 285         hci_dev_clear_volatile_flags(hdev);
 286
 287         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
 288
 289         hdev->inq_tx_power = HCI_TX_POWER_INVALID;
 290         hdev->adv_tx_power = HCI_TX_POWER_INVALID;
 291
 292         memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
 293         hdev->adv_data_len = 0;
 294
 295         memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
 296         hdev->scan_rsp_data_len = 0;
 297
 298         hdev->le_scan_type = LE_SCAN_PASSIVE;
 299
 300         hdev->ssp_debug_mode = 0;
 301
 302         hci_bdaddr_list_clear(&hdev->le_accept_list);
 303         hci_bdaddr_list_clear(&hdev->le_resolv_list);
 304
 305         return rp->status;
 306 }
 307
 308 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data,
 309                                       struct sk_buff *skb)
 310 {
 311         struct hci_rp_read_stored_link_key *rp = data;
 312         struct hci_cp_read_stored_link_key *sent;
 313
 314         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 315
 316         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
 317         if (!sent)
 318                 return rp->status;
 319
 320         if (!rp->status && sent->read_all == 0x01) {
 321                 hdev->stored_max_keys = le16_to_cpu(rp->max_keys);
 322                 hdev->stored_num_keys = le16_to_cpu(rp->num_keys);
 323         }
 324
 325         return rp->status;
 326 }
 327
 328 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data,
 329                                         struct sk_buff *skb)
 330 {
 331         struct hci_rp_delete_stored_link_key *rp = data;
 332         u16 num_keys;
 333
 334         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 335
 336         if (rp->status)
 337                 return rp->status;
 338
 339         num_keys = le16_to_cpu(rp->num_keys);
 340
 341         if (num_keys <= hdev->stored_num_keys)
 342                 hdev->stored_num_keys -= num_keys;
 343         else
 344                 hdev->stored_num_keys = 0;
 345
 346         return rp->status;
 347 }
 348
 349 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data,
 350                                   struct sk_buff *skb)
 351 {
 352         struct hci_ev_status *rp = data;
 353         void *sent;
 354
 355         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 356
 357         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
 358         if (!sent)
 359                 return rp->status;
 360
 361         hci_dev_lock(hdev);
 362
 363         if (hci_dev_test_flag(hdev, HCI_MGMT))
 364                 mgmt_set_local_name_complete(hdev, sent, rp->status);
 365         else if (!rp->status)
 366                 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
 367
 368         hci_dev_unlock(hdev);
 369
 370         return rp->status;
 371 }
 372
 373 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data,
 374                                  struct sk_buff *skb)
 375 {
 376         struct hci_rp_read_local_name *rp = data;
 377
 378         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 379
 380         if (rp->status)
 381                 return rp->status;
 382
 383         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 384             hci_dev_test_flag(hdev, HCI_CONFIG))
 385                 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
 386
 387         return rp->status;
 388 }
 389
 390 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data,
 391                                    struct sk_buff *skb)
 392 {
 393         struct hci_ev_status *rp = data;
 394         void *sent;
 395
 396         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 397
 398         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
 399         if (!sent)
 400                 return rp->status;
 401
 402         hci_dev_lock(hdev);
 403
 404         if (!rp->status) {
 405                 __u8 param = *((__u8 *) sent);
 406
 407                 if (param == AUTH_ENABLED)
 408                         set_bit(HCI_AUTH, &hdev->flags);
 409                 else
 410                         clear_bit(HCI_AUTH, &hdev->flags);
 411         }
 412
 413         if (hci_dev_test_flag(hdev, HCI_MGMT))
 414                 mgmt_auth_enable_complete(hdev, rp->status);
 415
 416         hci_dev_unlock(hdev);
 417
 418         return rp->status;
 419 }
 420
 421 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data,
 422                                     struct sk_buff *skb)
 423 {
 424         struct hci_ev_status *rp = data;
 425         __u8 param;
 426         void *sent;
 427
 428         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 429
 430         if (rp->status)
 431                 return rp->status;
 432
 433         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
 434         if (!sent)
 435                 return rp->status;
 436
 437         param = *((__u8 *) sent);
 438
 439         if (param)
 440                 set_bit(HCI_ENCRYPT, &hdev->flags);
 441         else
 442                 clear_bit(HCI_ENCRYPT, &hdev->flags);
 443
 444         return rp->status;
 445 }
 446
 447 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data,
 448                                    struct sk_buff *skb)
 449 {
 450         struct hci_ev_status *rp = data;
 451         __u8 param;
 452         void *sent;
 453
 454         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 455
 456         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
 457         if (!sent)
 458                 return rp->status;
 459
 460         param = *((__u8 *) sent);
 461
 462         hci_dev_lock(hdev);
 463
 464         if (rp->status) {
 465                 hdev->discov_timeout = 0;
 466                 goto done;
 467         }
 468
 469         if (param & SCAN_INQUIRY)
 470                 set_bit(HCI_ISCAN, &hdev->flags);
 471         else
 472                 clear_bit(HCI_ISCAN, &hdev->flags);
 473
 474         if (param & SCAN_PAGE)
 475                 set_bit(HCI_PSCAN, &hdev->flags);
 476         else
 477                 clear_bit(HCI_PSCAN, &hdev->flags);
 478
 479 done:
 480         hci_dev_unlock(hdev);
 481
 482         return rp->status;
 483 }
 484
 485 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data,
 486                                   struct sk_buff *skb)
 487 {
 488         struct hci_ev_status *rp = data;
 489         struct hci_cp_set_event_filter *cp;
 490         void *sent;
 491
 492         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 493
 494         if (rp->status)
 495                 return rp->status;
 496
 497         sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT);
 498         if (!sent)
 499                 return rp->status;
 500
 501         cp = (struct hci_cp_set_event_filter *)sent;
 502
 503         if (cp->flt_type == HCI_FLT_CLEAR_ALL)
 504                 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
 505         else
 506                 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
 507
 508         return rp->status;
 509 }
 510
 511 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data,
 512                                    struct sk_buff *skb)
 513 {
 514         struct hci_rp_read_class_of_dev *rp = data;
 515
 516         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 517
 518         if (rp->status)
 519                 return rp->status;
 520
 521         memcpy(hdev->dev_class, rp->dev_class, 3);
 522
 523         bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2],
 524                    hdev->dev_class[1], hdev->dev_class[0]);
 525
 526         return rp->status;
 527 }
 528
 529 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data,
 530                                     struct sk_buff *skb)
 531 {
 532         struct hci_ev_status *rp = data;
 533         void *sent;
 534
 535         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 536
 537         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
 538         if (!sent)
 539                 return rp->status;
 540
 541         hci_dev_lock(hdev);
 542
 543         if (!rp->status)
 544                 memcpy(hdev->dev_class, sent, 3);
 545
 546         if (hci_dev_test_flag(hdev, HCI_MGMT))
 547                 mgmt_set_class_of_dev_complete(hdev, sent, rp->status);
 548
 549         hci_dev_unlock(hdev);
 550
 551         return rp->status;
 552 }
 553
 554 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data,
 555                                     struct sk_buff *skb)
 556 {
 557         struct hci_rp_read_voice_setting *rp = data;
 558         __u16 setting;
 559
 560         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 561
 562         if (rp->status)
 563                 return rp->status;
 564
 565         setting = __le16_to_cpu(rp->voice_setting);
 566
 567         if (hdev->voice_setting == setting)
 568                 return rp->status;
 569
 570         hdev->voice_setting = setting;
 571
 572         bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
 573
 574         if (hdev->notify)
 575                 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
 576
 577         return rp->status;
 578 }
 579
 580 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data,
 581                                      struct sk_buff *skb)
 582 {
 583         struct hci_ev_status *rp = data;
 584         __u16 setting;
 585         void *sent;
 586
 587         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 588
 589         if (rp->status)
 590                 return rp->status;
 591
 592         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
 593         if (!sent)
 594                 return rp->status;
 595
 596         setting = get_unaligned_le16(sent);
 597
 598         if (hdev->voice_setting == setting)
 599                 return rp->status;
 600
 601         hdev->voice_setting = setting;
 602
 603         bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
 604
 605         if (hdev->notify)
 606                 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
 607
 608         return rp->status;
 609 }
 610
 611 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data,
 612                                         struct sk_buff *skb)
 613 {
 614         struct hci_rp_read_num_supported_iac *rp = data;
 615
 616         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 617
 618         if (rp->status)
 619                 return rp->status;
 620
 621         hdev->num_iac = rp->num_iac;
 622
 623         bt_dev_dbg(hdev, "num iac %d", hdev->num_iac);
 624
 625         return rp->status;
 626 }
 627
 628 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data,
 629                                 struct sk_buff *skb)
 630 {
 631         struct hci_ev_status *rp = data;
 632         struct hci_cp_write_ssp_mode *sent;
 633
 634         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 635
 636         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
 637         if (!sent)
 638                 return rp->status;
 639
 640         hci_dev_lock(hdev);
 641
 642         if (!rp->status) {
 643                 if (sent->mode)
 644                         hdev->features[1][0] |= LMP_HOST_SSP;
 645                 else
 646                         hdev->features[1][0] &= ~LMP_HOST_SSP;
 647         }
 648
 649         if (!rp->status) {
 650                 if (sent->mode)
 651                         hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
 652                 else
 653                         hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
 654         }
 655
 656         hci_dev_unlock(hdev);
 657
 658         return rp->status;
 659 }
 660
 661 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data,
 662                                   struct sk_buff *skb)
 663 {
 664         struct hci_ev_status *rp = data;
 665         struct hci_cp_write_sc_support *sent;
 666
 667         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 668
 669         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
 670         if (!sent)
 671                 return rp->status;
 672
 673         hci_dev_lock(hdev);
 674
 675         if (!rp->status) {
 676                 if (sent->support)
 677                         hdev->features[1][0] |= LMP_HOST_SC;
 678                 else
 679                         hdev->features[1][0] &= ~LMP_HOST_SC;
 680         }
 681
 682         if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) {
 683                 if (sent->support)
 684                         hci_dev_set_flag(hdev, HCI_SC_ENABLED);
 685                 else
 686                         hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
 687         }
 688
 689         hci_dev_unlock(hdev);
 690
 691         return rp->status;
 692 }
 693
 694 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data,
 695                                     struct sk_buff *skb)
 696 {
 697         struct hci_rp_read_local_version *rp = data;
 698
 699         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 700
 701         if (rp->status)
 702                 return rp->status;
 703
 704         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 705             hci_dev_test_flag(hdev, HCI_CONFIG)) {
 706                 hdev->hci_ver = rp->hci_ver;
 707                 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
 708                 hdev->lmp_ver = rp->lmp_ver;
 709                 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
 710                 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
 711         }
 712
 713         return rp->status;
 714 }
 715
 716 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data,
 717                                    struct sk_buff *skb)
 718 {
 719         struct hci_rp_read_enc_key_size *rp = data;
 720         struct hci_conn *conn;
 721         u16 handle;
 722         u8 status = rp->status;
 723
 724         bt_dev_dbg(hdev, "status 0x%2.2x", status);
 725
 726         handle = le16_to_cpu(rp->handle);
 727
 728         hci_dev_lock(hdev);
 729
 730         conn = hci_conn_hash_lookup_handle(hdev, handle);
 731         if (!conn) {
 732                 status = 0xFF;
 733                 goto done;
 734         }
 735
 736         /* While unexpected, the read_enc_key_size command may fail. The most
 737          * secure approach is to then assume the key size is 0 to force a
 738          * disconnection.
 739          */
 740         if (status) {
 741                 bt_dev_err(hdev, "failed to read key size for handle %u",
 742                            handle);
 743                 conn->enc_key_size = 0;
 744         } else {
 745                 conn->enc_key_size = rp->key_size;
 746                 status = 0;
 747         }
 748
 749         hci_encrypt_cfm(conn, 0);
 750
 751 done:
 752         hci_dev_unlock(hdev);
 753
 754         return status;
 755 }
 756
 757 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data,
 758                                      struct sk_buff *skb)
 759 {
 760         struct hci_rp_read_local_commands *rp = data;
 761
 762         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 763
 764         if (rp->status)
 765                 return rp->status;
 766
 767         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 768             hci_dev_test_flag(hdev, HCI_CONFIG))
 769                 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
 770
 771         return rp->status;
 772 }
 773
 774 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data,
 775                                            struct sk_buff *skb)
 776 {
 777         struct hci_rp_read_auth_payload_to *rp = data;
 778         struct hci_conn *conn;
 779
 780         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 781
 782         if (rp->status)
 783                 return rp->status;
 784
 785         hci_dev_lock(hdev);
 786
 787         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 788         if (conn)
 789                 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
 790
 791         hci_dev_unlock(hdev);
 792
 793         return rp->status;
 794 }
 795
 796 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data,
 797                                             struct sk_buff *skb)
 798 {
 799         struct hci_rp_write_auth_payload_to *rp = data;
 800         struct hci_conn *conn;
 801         void *sent;
 802
 803         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 804
 805         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
 806         if (!sent)
 807                 return rp->status;
 808
 809         hci_dev_lock(hdev);
 810
 811         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 812         if (!conn) {
 813                 rp->status = 0xff;
 814                 goto unlock;
 815         }
 816
 817         if (!rp->status)
 818                 conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
 819
 820         hci_encrypt_cfm(conn, 0);
 821
 822 unlock:
 823         hci_dev_unlock(hdev);
 824
 825         return rp->status;
 826 }
 827
 828 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data,
 829                                      struct sk_buff *skb)
 830 {
 831         struct hci_rp_read_local_features *rp = data;
 832
 833         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 834
 835         if (rp->status)
 836                 return rp->status;
 837
 838         memcpy(hdev->features, rp->features, 8);
 839
 840         /* Adjust default settings according to features
 841          * supported by device. */
 842
 843         if (hdev->features[0][0] & LMP_3SLOT)
 844                 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
 845
 846         if (hdev->features[0][0] & LMP_5SLOT)
 847                 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
 848
 849         if (hdev->features[0][1] & LMP_HV2) {
 850                 hdev->pkt_type  |= (HCI_HV2);
 851                 hdev->esco_type |= (ESCO_HV2);
 852         }
 853
 854         if (hdev->features[0][1] & LMP_HV3) {
 855                 hdev->pkt_type  |= (HCI_HV3);
 856                 hdev->esco_type |= (ESCO_HV3);
 857         }
 858
 859         if (lmp_esco_capable(hdev))
 860                 hdev->esco_type |= (ESCO_EV3);
 861
 862         if (hdev->features[0][4] & LMP_EV4)
 863                 hdev->esco_type |= (ESCO_EV4);
 864
 865         if (hdev->features[0][4] & LMP_EV5)
 866                 hdev->esco_type |= (ESCO_EV5);
 867
 868         if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
 869                 hdev->esco_type |= (ESCO_2EV3);
 870
 871         if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
 872                 hdev->esco_type |= (ESCO_3EV3);
 873
 874         if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
 875                 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
 876
 877         return rp->status;
 878 }
 879
 880 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
 881                                          struct sk_buff *skb)
 882 {
 883         struct hci_rp_read_local_ext_features *rp = data;
 884
 885         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 886
 887         if (rp->status)
 888                 return rp->status;
 889
 890         if (hdev->max_page < rp->max_page) {
 891                 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
 892                              &hdev->quirks))
 893                         bt_dev_warn(hdev, "broken local ext features page 2");
 894                 else
 895                         hdev->max_page = rp->max_page;
 896         }
 897
 898         if (rp->page < HCI_MAX_PAGES)
 899                 memcpy(hdev->features[rp->page], rp->features, 8);
 900
 901         return rp->status;
 902 }
 903
 904 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data,
 905                                         struct sk_buff *skb)
 906 {
 907         struct hci_rp_read_flow_control_mode *rp = data;
 908
 909         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 910
 911         if (rp->status)
 912                 return rp->status;
 913
 914         hdev->flow_ctl_mode = rp->mode;
 915
 916         return rp->status;
 917 }
 918
 919 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data,
 920                                   struct sk_buff *skb)
 921 {
 922         struct hci_rp_read_buffer_size *rp = data;
 923
 924         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 925
 926         if (rp->status)
 927                 return rp->status;
 928
 929         hdev->acl_mtu  = __le16_to_cpu(rp->acl_mtu);
 930         hdev->sco_mtu  = rp->sco_mtu;
 931         hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
 932         hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
 933
 934         if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
 935                 hdev->sco_mtu  = 64;
 936                 hdev->sco_pkts = 8;
 937         }
 938
 939         hdev->acl_cnt = hdev->acl_pkts;
 940         hdev->sco_cnt = hdev->sco_pkts;
 941
 942         BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
 943                hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
 944
 945         return rp->status;
 946 }
 947
 948 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data,
 949                               struct sk_buff *skb)
 950 {
 951         struct hci_rp_read_bd_addr *rp = data;
 952
 953         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 954
 955         if (rp->status)
 956                 return rp->status;
 957
 958         if (test_bit(HCI_INIT, &hdev->flags))
 959                 bacpy(&hdev->bdaddr, &rp->bdaddr);
 960
 961         if (hci_dev_test_flag(hdev, HCI_SETUP))
 962                 bacpy(&hdev->setup_addr, &rp->bdaddr);
 963
 964         return rp->status;
 965 }
 966
 967 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data,
 968                                          struct sk_buff *skb)
 969 {
 970         struct hci_rp_read_local_pairing_opts *rp = data;
 971
 972         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 973
 974         if (rp->status)
 975                 return rp->status;
 976
 977         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 978             hci_dev_test_flag(hdev, HCI_CONFIG)) {
 979                 hdev->pairing_opts = rp->pairing_opts;
 980                 hdev->max_enc_key_size = rp->max_key_size;
 981         }
 982
 983         return rp->status;
 984 }
 985
 986 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data,
 987                                          struct sk_buff *skb)
 988 {
 989         struct hci_rp_read_page_scan_activity *rp = data;
 990
 991         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 992
 993         if (rp->status)
 994                 return rp->status;
 995
 996         if (test_bit(HCI_INIT, &hdev->flags)) {
 997                 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
 998                 hdev->page_scan_window = __le16_to_cpu(rp->window);
 999         }
1000
1001         return rp->status;
1002 }
1003
1004 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data,
1005                                           struct sk_buff *skb)
1006 {
1007         struct hci_ev_status *rp = data;
1008         struct hci_cp_write_page_scan_activity *sent;
1009
1010         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1011
1012         if (rp->status)
1013                 return rp->status;
1014
1015         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
1016         if (!sent)
1017                 return rp->status;
1018
1019         hdev->page_scan_interval = __le16_to_cpu(sent->interval);
1020         hdev->page_scan_window = __le16_to_cpu(sent->window);
1021
1022         return rp->status;
1023 }
1024
1025 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data,
1026                                      struct sk_buff *skb)
1027 {
1028         struct hci_rp_read_page_scan_type *rp = data;
1029
1030         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1031
1032         if (rp->status)
1033                 return rp->status;
1034
1035         if (test_bit(HCI_INIT, &hdev->flags))
1036                 hdev->page_scan_type = rp->type;
1037
1038         return rp->status;
1039 }
1040
1041 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data,
1042                                       struct sk_buff *skb)
1043 {
1044         struct hci_ev_status *rp = data;
1045         u8 *type;
1046
1047         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1048
1049         if (rp->status)
1050                 return rp->status;
1051
1052         type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
1053         if (type)
1054                 hdev->page_scan_type = *type;
1055
1056         return rp->status;
1057 }
1058
1059 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data,
1060                                       struct sk_buff *skb)
1061 {
1062         struct hci_rp_read_data_block_size *rp = data;
1063
1064         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1065
1066         if (rp->status)
1067                 return rp->status;
1068
1069         hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
1070         hdev->block_len = __le16_to_cpu(rp->block_len);
1071         hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
1072
1073         hdev->block_cnt = hdev->num_blocks;
1074
1075         BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
1076                hdev->block_cnt, hdev->block_len);
1077
1078         return rp->status;
1079 }
1080
1081 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data,
1082                             struct sk_buff *skb)
1083 {
1084         struct hci_rp_read_clock *rp = data;
1085         struct hci_cp_read_clock *cp;
1086         struct hci_conn *conn;
1087
1088         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1089
1090         if (rp->status)
1091                 return rp->status;
1092
1093         hci_dev_lock(hdev);
1094
1095         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
1096         if (!cp)
1097                 goto unlock;
1098
1099         if (cp->which == 0x00) {
1100                 hdev->clock = le32_to_cpu(rp->clock);
1101                 goto unlock;
1102         }
1103
1104         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1105         if (conn) {
1106                 conn->clock = le32_to_cpu(rp->clock);
1107                 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
1108         }
1109
1110 unlock:
1111         hci_dev_unlock(hdev);
1112         return rp->status;
1113 }
1114
1115 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data,
1116                                      struct sk_buff *skb)
1117 {
1118         struct hci_rp_read_local_amp_info *rp = data;
1119
1120         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1121
1122         if (rp->status)
1123                 return rp->status;
1124
1125         hdev->amp_status = rp->amp_status;
1126         hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
1127         hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
1128         hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
1129         hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
1130         hdev->amp_type = rp->amp_type;
1131         hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
1132         hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
1133         hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
1134         hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
1135
1136         return rp->status;
1137 }
1138
1139 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data,
1140                                        struct sk_buff *skb)
1141 {
1142         struct hci_rp_read_inq_rsp_tx_power *rp = data;
1143
1144         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1145
1146         if (rp->status)
1147                 return rp->status;
1148
1149         hdev->inq_tx_power = rp->tx_power;
1150
1151         return rp->status;
1152 }
1153
1154 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data,
1155                                              struct sk_buff *skb)
1156 {
1157         struct hci_rp_read_def_err_data_reporting *rp = data;
1158
1159         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1160
1161         if (rp->status)
1162                 return rp->status;
1163
1164         hdev->err_data_reporting = rp->err_data_reporting;
1165
1166         return rp->status;
1167 }
1168
1169 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data,
1170                                               struct sk_buff *skb)
1171 {
1172         struct hci_ev_status *rp = data;
1173         struct hci_cp_write_def_err_data_reporting *cp;
1174
1175         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1176
1177         if (rp->status)
1178                 return rp->status;
1179
1180         cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
1181         if (!cp)
1182                 return rp->status;
1183
1184         hdev->err_data_reporting = cp->err_data_reporting;
1185
1186         return rp->status;
1187 }
1188
1189 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data,
1190                                 struct sk_buff *skb)
1191 {
1192         struct hci_rp_pin_code_reply *rp = data;
1193         struct hci_cp_pin_code_reply *cp;
1194         struct hci_conn *conn;
1195
1196         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1197
1198         hci_dev_lock(hdev);
1199
1200         if (hci_dev_test_flag(hdev, HCI_MGMT))
1201                 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
1202
1203         if (rp->status)
1204                 goto unlock;
1205
1206         cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
1207         if (!cp)
1208                 goto unlock;
1209
1210         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1211         if (conn)
1212                 conn->pin_length = cp->pin_len;
1213
1214 unlock:
1215         hci_dev_unlock(hdev);
1216         return rp->status;
1217 }
1218
1219 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data,
1220                                     struct sk_buff *skb)
1221 {
1222         struct hci_rp_pin_code_neg_reply *rp = data;
1223
1224         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1225
1226         hci_dev_lock(hdev);
1227
1228         if (hci_dev_test_flag(hdev, HCI_MGMT))
1229                 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
1230                                                  rp->status);
1231
1232         hci_dev_unlock(hdev);
1233
1234         return rp->status;
1235 }
1236
1237 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data,
1238                                      struct sk_buff *skb)
1239 {
1240         struct hci_rp_le_read_buffer_size *rp = data;
1241
1242         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1243
1244         if (rp->status)
1245                 return rp->status;
1246
1247         hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
1248         hdev->le_pkts = rp->le_max_pkt;
1249
1250         hdev->le_cnt = hdev->le_pkts;
1251
1252         BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
1253
1254         return rp->status;
1255 }
1256
1257 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data,
1258                                         struct sk_buff *skb)
1259 {
1260         struct hci_rp_le_read_local_features *rp = data;
1261
1262         BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1263
1264         if (rp->status)
1265                 return rp->status;
1266
1267         memcpy(hdev->le_features, rp->features, 8);
1268
1269         return rp->status;
1270 }
1271
1272 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data,
1273                                       struct sk_buff *skb)
1274 {
1275         struct hci_rp_le_read_adv_tx_power *rp = data;
1276
1277         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1278
1279         if (rp->status)
1280                 return rp->status;
1281
1282         hdev->adv_tx_power = rp->tx_power;
1283
1284         return rp->status;
1285 }
1286
1287 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data,
1288                                     struct sk_buff *skb)
1289 {
1290         struct hci_rp_user_confirm_reply *rp = data;
1291
1292         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1293
1294         hci_dev_lock(hdev);
1295
1296         if (hci_dev_test_flag(hdev, HCI_MGMT))
1297                 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
1298                                                  rp->status);
1299
1300         hci_dev_unlock(hdev);
1301
1302         return rp->status;
1303 }
1304
1305 static u8 hci_cc_user_confirm_neg_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_neg_reply_complete(hdev, &rp->bdaddr,
1316                                                      ACL_LINK, 0, rp->status);
1317
1318         hci_dev_unlock(hdev);
1319
1320         return rp->status;
1321 }
1322
1323 static u8 hci_cc_user_passkey_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_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1334                                                  0, rp->status);
1335
1336         hci_dev_unlock(hdev);
1337
1338         return rp->status;
1339 }
1340
1341 static u8 hci_cc_user_passkey_neg_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_neg_reply_complete(hdev, &rp->bdaddr,
1352                                                      ACL_LINK, 0, rp->status);
1353
1354         hci_dev_unlock(hdev);
1355
1356         return rp->status;
1357 }
1358
1359 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data,
1360                                      struct sk_buff *skb)
1361 {
1362         struct hci_rp_read_local_oob_data *rp = data;
1363
1364         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1365
1366         return rp->status;
1367 }
1368
1369 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data,
1370                                          struct sk_buff *skb)
1371 {
1372         struct hci_rp_read_local_oob_ext_data *rp = data;
1373
1374         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1375
1376         return rp->status;
1377 }
1378
1379 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data,
1380                                     struct sk_buff *skb)
1381 {
1382         struct hci_ev_status *rp = data;
1383         bdaddr_t *sent;
1384
1385         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1386
1387         if (rp->status)
1388                 return rp->status;
1389
1390         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1391         if (!sent)
1392                 return rp->status;
1393
1394         hci_dev_lock(hdev);
1395
1396         bacpy(&hdev->random_addr, sent);
1397
1398         if (!bacmp(&hdev->rpa, sent)) {
1399                 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
1400                 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired,
1401                                    secs_to_jiffies(hdev->rpa_timeout));
1402         }
1403
1404         hci_dev_unlock(hdev);
1405
1406         return rp->status;
1407 }
1408
1409 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data,
1410                                     struct sk_buff *skb)
1411 {
1412         struct hci_ev_status *rp = data;
1413         struct hci_cp_le_set_default_phy *cp;
1414
1415         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1416
1417         if (rp->status)
1418                 return rp->status;
1419
1420         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1421         if (!cp)
1422                 return rp->status;
1423
1424         hci_dev_lock(hdev);
1425
1426         hdev->le_tx_def_phys = cp->tx_phys;
1427         hdev->le_rx_def_phys = cp->rx_phys;
1428
1429         hci_dev_unlock(hdev);
1430
1431         return rp->status;
1432 }
1433
1434 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data,
1435                                             struct sk_buff *skb)
1436 {
1437         struct hci_ev_status *rp = data;
1438         struct hci_cp_le_set_adv_set_rand_addr *cp;
1439         struct adv_info *adv;
1440
1441         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1442
1443         if (rp->status)
1444                 return rp->status;
1445
1446         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1447         /* Update only in case the adv instance since handle 0x00 shall be using
1448          * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
1449          * non-extended adverting.
1450          */
1451         if (!cp || !cp->handle)
1452                 return rp->status;
1453
1454         hci_dev_lock(hdev);
1455
1456         adv = hci_find_adv_instance(hdev, cp->handle);
1457         if (adv) {
1458                 bacpy(&adv->random_addr, &cp->bdaddr);
1459                 if (!bacmp(&hdev->rpa, &cp->bdaddr)) {
1460                         adv->rpa_expired = false;
1461                         queue_delayed_work(hdev->workqueue,
1462                                            &adv->rpa_expired_cb,
1463                                            secs_to_jiffies(hdev->rpa_timeout));
1464                 }
1465         }
1466
1467         hci_dev_unlock(hdev);
1468
1469         return rp->status;
1470 }
1471
1472 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data,
1473                                    struct sk_buff *skb)
1474 {
1475         struct hci_ev_status *rp = data;
1476         u8 *instance;
1477         int err;
1478
1479         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1480
1481         if (rp->status)
1482                 return rp->status;
1483
1484         instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET);
1485         if (!instance)
1486                 return rp->status;
1487
1488         hci_dev_lock(hdev);
1489
1490         err = hci_remove_adv_instance(hdev, *instance);
1491         if (!err)
1492                 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev,
1493                                          *instance);
1494
1495         hci_dev_unlock(hdev);
1496
1497         return rp->status;
1498 }
1499
1500 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data,
1501                                    struct sk_buff *skb)
1502 {
1503         struct hci_ev_status *rp = data;
1504         struct adv_info *adv, *n;
1505         int err;
1506
1507         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1508
1509         if (rp->status)
1510                 return rp->status;
1511
1512         if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS))
1513                 return rp->status;
1514
1515         hci_dev_lock(hdev);
1516
1517         list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1518                 u8 instance = adv->instance;
1519
1520                 err = hci_remove_adv_instance(hdev, instance);
1521                 if (!err)
1522                         mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd),
1523                                                  hdev, instance);
1524         }
1525
1526         hci_dev_unlock(hdev);
1527
1528         return rp->status;
1529 }
1530
1531 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data,
1532                                         struct sk_buff *skb)
1533 {
1534         struct hci_rp_le_read_transmit_power *rp = data;
1535
1536         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1537
1538         if (rp->status)
1539                 return rp->status;
1540
1541         hdev->min_le_tx_power = rp->min_le_tx_power;
1542         hdev->max_le_tx_power = rp->max_le_tx_power;
1543
1544         return rp->status;
1545 }
1546
1547 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data,
1548                                      struct sk_buff *skb)
1549 {
1550         struct hci_ev_status *rp = data;
1551         struct hci_cp_le_set_privacy_mode *cp;
1552         struct hci_conn_params *params;
1553
1554         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1555
1556         if (rp->status)
1557                 return rp->status;
1558
1559         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE);
1560         if (!cp)
1561                 return rp->status;
1562
1563         hci_dev_lock(hdev);
1564
1565         params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type);
1566         if (params)
1567                 WRITE_ONCE(params->privacy_mode, cp->mode);
1568
1569         hci_dev_unlock(hdev);
1570
1571         return rp->status;
1572 }
1573
1574 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data,
1575                                    struct sk_buff *skb)
1576 {
1577         struct hci_ev_status *rp = data;
1578         __u8 *sent;
1579
1580         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1581
1582         if (rp->status)
1583                 return rp->status;
1584
1585         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1586         if (!sent)
1587                 return rp->status;
1588
1589         hci_dev_lock(hdev);
1590
1591         /* If we're doing connection initiation as peripheral. Set a
1592          * timeout in case something goes wrong.
1593          */
1594         if (*sent) {
1595                 struct hci_conn *conn;
1596
1597                 hci_dev_set_flag(hdev, HCI_LE_ADV);
1598
1599                 conn = hci_lookup_le_connect(hdev);
1600                 if (conn)
1601                         queue_delayed_work(hdev->workqueue,
1602                                            &conn->le_conn_timeout,
1603                                            conn->conn_timeout);
1604         } else {
1605                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1606         }
1607
1608         hci_dev_unlock(hdev);
1609
1610         return rp->status;
1611 }
1612
1613 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
1614                                        struct sk_buff *skb)
1615 {
1616         struct hci_cp_le_set_ext_adv_enable *cp;
1617         struct hci_cp_ext_adv_set *set;
1618         struct adv_info *adv = NULL, *n;
1619         struct hci_ev_status *rp = data;
1620
1621         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1622
1623         if (rp->status)
1624                 return rp->status;
1625
1626         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1627         if (!cp)
1628                 return rp->status;
1629
1630         set = (void *)cp->data;
1631
1632         hci_dev_lock(hdev);
1633
1634         if (cp->num_of_sets)
1635                 adv = hci_find_adv_instance(hdev, set->handle);
1636
1637         if (cp->enable) {
1638                 struct hci_conn *conn;
1639
1640                 hci_dev_set_flag(hdev, HCI_LE_ADV);
1641
1642                 if (adv && !adv->periodic)
1643                         adv->enabled = true;
1644
1645                 conn = hci_lookup_le_connect(hdev);
1646                 if (conn)
1647                         queue_delayed_work(hdev->workqueue,
1648                                            &conn->le_conn_timeout,
1649                                            conn->conn_timeout);
1650         } else {
1651                 if (cp->num_of_sets) {
1652                         if (adv)
1653                                 adv->enabled = false;
1654
1655                         /* If just one instance was disabled check if there are
1656                          * any other instance enabled before clearing HCI_LE_ADV
1657                          */
1658                         list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1659                                                  list) {
1660                                 if (adv->enabled)
1661                                         goto unlock;
1662                         }
1663                 } else {
1664                         /* All instances shall be considered disabled */
1665                         list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1666                                                  list)
1667                                 adv->enabled = false;
1668                 }
1669
1670                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1671         }
1672
1673 unlock:
1674         hci_dev_unlock(hdev);
1675         return rp->status;
1676 }
1677
1678 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data,
1679                                    struct sk_buff *skb)
1680 {
1681         struct hci_cp_le_set_scan_param *cp;
1682         struct hci_ev_status *rp = data;
1683
1684         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1685
1686         if (rp->status)
1687                 return rp->status;
1688
1689         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1690         if (!cp)
1691                 return rp->status;
1692
1693         hci_dev_lock(hdev);
1694
1695         hdev->le_scan_type = cp->type;
1696
1697         hci_dev_unlock(hdev);
1698
1699         return rp->status;
1700 }
1701
1702 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data,
1703                                        struct sk_buff *skb)
1704 {
1705         struct hci_cp_le_set_ext_scan_params *cp;
1706         struct hci_ev_status *rp = data;
1707         struct hci_cp_le_scan_phy_params *phy_param;
1708
1709         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1710
1711         if (rp->status)
1712                 return rp->status;
1713
1714         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1715         if (!cp)
1716                 return rp->status;
1717
1718         phy_param = (void *)cp->data;
1719
1720         hci_dev_lock(hdev);
1721
1722         hdev->le_scan_type = phy_param->type;
1723
1724         hci_dev_unlock(hdev);
1725
1726         return rp->status;
1727 }
1728
1729 static bool has_pending_adv_report(struct hci_dev *hdev)
1730 {
1731         struct discovery_state *d = &hdev->discovery;
1732
1733         return bacmp(&d->last_adv_addr, BDADDR_ANY);
1734 }
1735
1736 static void clear_pending_adv_report(struct hci_dev *hdev)
1737 {
1738         struct discovery_state *d = &hdev->discovery;
1739
1740         bacpy(&d->last_adv_addr, BDADDR_ANY);
1741         d->last_adv_data_len = 0;
1742 }
1743
1744 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1745                                      u8 bdaddr_type, s8 rssi, u32 flags,
1746                                      u8 *data, u8 len)
1747 {
1748         struct discovery_state *d = &hdev->discovery;
1749
1750         if (len > max_adv_len(hdev))
1751                 return;
1752
1753         bacpy(&d->last_adv_addr, bdaddr);
1754         d->last_adv_addr_type = bdaddr_type;
1755         d->last_adv_rssi = rssi;
1756         d->last_adv_flags = flags;
1757         memcpy(d->last_adv_data, data, len);
1758         d->last_adv_data_len = len;
1759 }
1760
1761 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1762 {
1763         hci_dev_lock(hdev);
1764
1765         switch (enable) {
1766         case LE_SCAN_ENABLE:
1767                 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1768                 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1769                         clear_pending_adv_report(hdev);
1770                 if (hci_dev_test_flag(hdev, HCI_MESH))
1771                         hci_discovery_set_state(hdev, DISCOVERY_FINDING);
1772                 break;
1773
1774         case LE_SCAN_DISABLE:
1775                 /* We do this here instead of when setting DISCOVERY_STOPPED
1776                  * since the latter would potentially require waiting for
1777                  * inquiry to stop too.
1778                  */
1779                 if (has_pending_adv_report(hdev)) {
1780                         struct discovery_state *d = &hdev->discovery;
1781
1782                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1783                                           d->last_adv_addr_type, NULL,
1784                                           d->last_adv_rssi, d->last_adv_flags,
1785                                           d->last_adv_data,
1786                                           d->last_adv_data_len, NULL, 0, 0);
1787                 }
1788
1789                 /* Cancel this timer so that we don't try to disable scanning
1790                  * when it's already disabled.
1791                  */
1792                 cancel_delayed_work(&hdev->le_scan_disable);
1793
1794                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1795
1796                 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1797                  * interrupted scanning due to a connect request. Mark
1798                  * therefore discovery as stopped.
1799                  */
1800                 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1801                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1802                 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1803                          hdev->discovery.state == DISCOVERY_FINDING)
1804                         queue_work(hdev->workqueue, &hdev->reenable_adv_work);
1805
1806                 break;
1807
1808         default:
1809                 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1810                            enable);
1811                 break;
1812         }
1813
1814         hci_dev_unlock(hdev);
1815 }
1816
1817 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1818                                     struct sk_buff *skb)
1819 {
1820         struct hci_cp_le_set_scan_enable *cp;
1821         struct hci_ev_status *rp = data;
1822
1823         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1824
1825         if (rp->status)
1826                 return rp->status;
1827
1828         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1829         if (!cp)
1830                 return rp->status;
1831
1832         le_set_scan_enable_complete(hdev, cp->enable);
1833
1834         return rp->status;
1835 }
1836
1837 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1838                                         struct sk_buff *skb)
1839 {
1840         struct hci_cp_le_set_ext_scan_enable *cp;
1841         struct hci_ev_status *rp = data;
1842
1843         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1844
1845         if (rp->status)
1846                 return rp->status;
1847
1848         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1849         if (!cp)
1850                 return rp->status;
1851
1852         le_set_scan_enable_complete(hdev, cp->enable);
1853
1854         return rp->status;
1855 }
1856
1857 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1858                                       struct sk_buff *skb)
1859 {
1860         struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1861
1862         bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1863                    rp->num_of_sets);
1864
1865         if (rp->status)
1866                 return rp->status;
1867
1868         hdev->le_num_of_adv_sets = rp->num_of_sets;
1869
1870         return rp->status;
1871 }
1872
1873 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1874                                           struct sk_buff *skb)
1875 {
1876         struct hci_rp_le_read_accept_list_size *rp = data;
1877
1878         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1879
1880         if (rp->status)
1881                 return rp->status;
1882
1883         hdev->le_accept_list_size = rp->size;
1884
1885         return rp->status;
1886 }
1887
1888 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1889                                       struct sk_buff *skb)
1890 {
1891         struct hci_ev_status *rp = data;
1892
1893         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1894
1895         if (rp->status)
1896                 return rp->status;
1897
1898         hci_dev_lock(hdev);
1899         hci_bdaddr_list_clear(&hdev->le_accept_list);
1900         hci_dev_unlock(hdev);
1901
1902         return rp->status;
1903 }
1904
1905 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1906                                        struct sk_buff *skb)
1907 {
1908         struct hci_cp_le_add_to_accept_list *sent;
1909         struct hci_ev_status *rp = data;
1910
1911         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1912
1913         if (rp->status)
1914                 return rp->status;
1915
1916         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1917         if (!sent)
1918                 return rp->status;
1919
1920         hci_dev_lock(hdev);
1921         hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
1922                             sent->bdaddr_type);
1923         hci_dev_unlock(hdev);
1924
1925         return rp->status;
1926 }
1927
1928 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1929                                          struct sk_buff *skb)
1930 {
1931         struct hci_cp_le_del_from_accept_list *sent;
1932         struct hci_ev_status *rp = data;
1933
1934         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1935
1936         if (rp->status)
1937                 return rp->status;
1938
1939         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1940         if (!sent)
1941                 return rp->status;
1942
1943         hci_dev_lock(hdev);
1944         hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
1945                             sent->bdaddr_type);
1946         hci_dev_unlock(hdev);
1947
1948         return rp->status;
1949 }
1950
1951 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1952                                           struct sk_buff *skb)
1953 {
1954         struct hci_rp_le_read_supported_states *rp = data;
1955
1956         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1957
1958         if (rp->status)
1959                 return rp->status;
1960
1961         memcpy(hdev->le_states, rp->le_states, 8);
1962
1963         return rp->status;
1964 }
1965
1966 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
1967                                       struct sk_buff *skb)
1968 {
1969         struct hci_rp_le_read_def_data_len *rp = data;
1970
1971         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1972
1973         if (rp->status)
1974                 return rp->status;
1975
1976         hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
1977         hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
1978
1979         return rp->status;
1980 }
1981
1982 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
1983                                        struct sk_buff *skb)
1984 {
1985         struct hci_cp_le_write_def_data_len *sent;
1986         struct hci_ev_status *rp = data;
1987
1988         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1989
1990         if (rp->status)
1991                 return rp->status;
1992
1993         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
1994         if (!sent)
1995                 return rp->status;
1996
1997         hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
1998         hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
1999
2000         return rp->status;
2001 }
2002
2003 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
2004                                        struct sk_buff *skb)
2005 {
2006         struct hci_cp_le_add_to_resolv_list *sent;
2007         struct hci_ev_status *rp = data;
2008
2009         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2010
2011         if (rp->status)
2012                 return rp->status;
2013
2014         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
2015         if (!sent)
2016                 return rp->status;
2017
2018         hci_dev_lock(hdev);
2019         hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2020                                 sent->bdaddr_type, sent->peer_irk,
2021                                 sent->local_irk);
2022         hci_dev_unlock(hdev);
2023
2024         return rp->status;
2025 }
2026
2027 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
2028                                          struct sk_buff *skb)
2029 {
2030         struct hci_cp_le_del_from_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_DEL_FROM_RESOLV_LIST);
2039         if (!sent)
2040                 return rp->status;
2041
2042         hci_dev_lock(hdev);
2043         hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2044                             sent->bdaddr_type);
2045         hci_dev_unlock(hdev);
2046
2047         return rp->status;
2048 }
2049
2050 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2051                                       struct sk_buff *skb)
2052 {
2053         struct hci_ev_status *rp = data;
2054
2055         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2056
2057         if (rp->status)
2058                 return rp->status;
2059
2060         hci_dev_lock(hdev);
2061         hci_bdaddr_list_clear(&hdev->le_resolv_list);
2062         hci_dev_unlock(hdev);
2063
2064         return rp->status;
2065 }
2066
2067 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2068                                           struct sk_buff *skb)
2069 {
2070         struct hci_rp_le_read_resolv_list_size *rp = data;
2071
2072         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2073
2074         if (rp->status)
2075                 return rp->status;
2076
2077         hdev->le_resolv_list_size = rp->size;
2078
2079         return rp->status;
2080 }
2081
2082 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2083                                                struct sk_buff *skb)
2084 {
2085         struct hci_ev_status *rp = data;
2086         __u8 *sent;
2087
2088         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2089
2090         if (rp->status)
2091                 return rp->status;
2092
2093         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2094         if (!sent)
2095                 return rp->status;
2096
2097         hci_dev_lock(hdev);
2098
2099         if (*sent)
2100                 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2101         else
2102                 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2103
2104         hci_dev_unlock(hdev);
2105
2106         return rp->status;
2107 }
2108
2109 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2110                                       struct sk_buff *skb)
2111 {
2112         struct hci_rp_le_read_max_data_len *rp = data;
2113
2114         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2115
2116         if (rp->status)
2117                 return rp->status;
2118
2119         hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2120         hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2121         hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2122         hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2123
2124         return rp->status;
2125 }
2126
2127 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2128                                          struct sk_buff *skb)
2129 {
2130         struct hci_cp_write_le_host_supported *sent;
2131         struct hci_ev_status *rp = data;
2132
2133         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2134
2135         if (rp->status)
2136                 return rp->status;
2137
2138         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2139         if (!sent)
2140                 return rp->status;
2141
2142         hci_dev_lock(hdev);
2143
2144         if (sent->le) {
2145                 hdev->features[1][0] |= LMP_HOST_LE;
2146                 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2147         } else {
2148                 hdev->features[1][0] &= ~LMP_HOST_LE;
2149                 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2150                 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2151         }
2152
2153         if (sent->simul)
2154                 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2155         else
2156                 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2157
2158         hci_dev_unlock(hdev);
2159
2160         return rp->status;
2161 }
2162
2163 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2164                                struct sk_buff *skb)
2165 {
2166         struct hci_cp_le_set_adv_param *cp;
2167         struct hci_ev_status *rp = data;
2168
2169         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2170
2171         if (rp->status)
2172                 return rp->status;
2173
2174         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2175         if (!cp)
2176                 return rp->status;
2177
2178         hci_dev_lock(hdev);
2179         hdev->adv_addr_type = cp->own_address_type;
2180         hci_dev_unlock(hdev);
2181
2182         return rp->status;
2183 }
2184
2185 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2186                                    struct sk_buff *skb)
2187 {
2188         struct hci_rp_le_set_ext_adv_params *rp = data;
2189         struct hci_cp_le_set_ext_adv_params *cp;
2190         struct adv_info *adv_instance;
2191
2192         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2193
2194         if (rp->status)
2195                 return rp->status;
2196
2197         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2198         if (!cp)
2199                 return rp->status;
2200
2201         hci_dev_lock(hdev);
2202         hdev->adv_addr_type = cp->own_addr_type;
2203         if (!cp->handle) {
2204                 /* Store in hdev for instance 0 */
2205                 hdev->adv_tx_power = rp->tx_power;
2206         } else {
2207                 adv_instance = hci_find_adv_instance(hdev, cp->handle);
2208                 if (adv_instance)
2209                         adv_instance->tx_power = rp->tx_power;
2210         }
2211         /* Update adv data as tx power is known now */
2212         hci_update_adv_data(hdev, cp->handle);
2213
2214         hci_dev_unlock(hdev);
2215
2216         return rp->status;
2217 }
2218
2219 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2220                            struct sk_buff *skb)
2221 {
2222         struct hci_rp_read_rssi *rp = data;
2223         struct hci_conn *conn;
2224
2225         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2226
2227         if (rp->status)
2228                 return rp->status;
2229
2230         hci_dev_lock(hdev);
2231
2232         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2233         if (conn)
2234                 conn->rssi = rp->rssi;
2235
2236         hci_dev_unlock(hdev);
2237
2238         return rp->status;
2239 }
2240
2241 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2242                                struct sk_buff *skb)
2243 {
2244         struct hci_cp_read_tx_power *sent;
2245         struct hci_rp_read_tx_power *rp = data;
2246         struct hci_conn *conn;
2247
2248         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2249
2250         if (rp->status)
2251                 return rp->status;
2252
2253         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2254         if (!sent)
2255                 return rp->status;
2256
2257         hci_dev_lock(hdev);
2258
2259         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2260         if (!conn)
2261                 goto unlock;
2262
2263         switch (sent->type) {
2264         case 0x00:
2265                 conn->tx_power = rp->tx_power;
2266                 break;
2267         case 0x01:
2268                 conn->max_tx_power = rp->tx_power;
2269                 break;
2270         }
2271
2272 unlock:
2273         hci_dev_unlock(hdev);
2274         return rp->status;
2275 }
2276
2277 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2278                                       struct sk_buff *skb)
2279 {
2280         struct hci_ev_status *rp = data;
2281         u8 *mode;
2282
2283         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2284
2285         if (rp->status)
2286                 return rp->status;
2287
2288         mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2289         if (mode)
2290                 hdev->ssp_debug_mode = *mode;
2291
2292         return rp->status;
2293 }
2294
2295 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2296 {
2297         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2298
2299         if (status) {
2300                 hci_conn_check_pending(hdev);
2301                 return;
2302         }
2303
2304         set_bit(HCI_INQUIRY, &hdev->flags);
2305 }
2306
2307 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2308 {
2309         struct hci_cp_create_conn *cp;
2310         struct hci_conn *conn;
2311
2312         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2313
2314         cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2315         if (!cp)
2316                 return;
2317
2318         hci_dev_lock(hdev);
2319
2320         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2321
2322         bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2323
2324         if (status) {
2325                 if (conn && conn->state == BT_CONNECT) {
2326                         if (status != 0x0c || conn->attempt > 2) {
2327                                 conn->state = BT_CLOSED;
2328                                 hci_connect_cfm(conn, status);
2329                                 hci_conn_del(conn);
2330                         } else
2331                                 conn->state = BT_CONNECT2;
2332                 }
2333         } else {
2334                 if (!conn) {
2335                         conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
2336                                             HCI_ROLE_MASTER);
2337                         if (!conn)
2338                                 bt_dev_err(hdev, "no memory for new connection");
2339                 }
2340         }
2341
2342         hci_dev_unlock(hdev);
2343 }
2344
2345 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2346 {
2347         struct hci_cp_add_sco *cp;
2348         struct hci_conn *acl;
2349         struct hci_link *link;
2350         __u16 handle;
2351
2352         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2353
2354         if (!status)
2355                 return;
2356
2357         cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2358         if (!cp)
2359                 return;
2360
2361         handle = __le16_to_cpu(cp->handle);
2362
2363         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2364
2365         hci_dev_lock(hdev);
2366
2367         acl = hci_conn_hash_lookup_handle(hdev, handle);
2368         if (acl) {
2369                 link = list_first_entry_or_null(&acl->link_list,
2370                                                 struct hci_link, list);
2371                 if (link && link->conn) {
2372                         link->conn->state = BT_CLOSED;
2373
2374                         hci_connect_cfm(link->conn, status);
2375                         hci_conn_del(link->conn);
2376                 }
2377         }
2378
2379         hci_dev_unlock(hdev);
2380 }
2381
2382 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2383 {
2384         struct hci_cp_auth_requested *cp;
2385         struct hci_conn *conn;
2386
2387         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2388
2389         if (!status)
2390                 return;
2391
2392         cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2393         if (!cp)
2394                 return;
2395
2396         hci_dev_lock(hdev);
2397
2398         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2399         if (conn) {
2400                 if (conn->state == BT_CONFIG) {
2401                         hci_connect_cfm(conn, status);
2402                         hci_conn_drop(conn);
2403                 }
2404         }
2405
2406         hci_dev_unlock(hdev);
2407 }
2408
2409 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2410 {
2411         struct hci_cp_set_conn_encrypt *cp;
2412         struct hci_conn *conn;
2413
2414         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2415
2416         if (!status)
2417                 return;
2418
2419         cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2420         if (!cp)
2421                 return;
2422
2423         hci_dev_lock(hdev);
2424
2425         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2426         if (conn) {
2427                 if (conn->state == BT_CONFIG) {
2428                         hci_connect_cfm(conn, status);
2429                         hci_conn_drop(conn);
2430                 }
2431         }
2432
2433         hci_dev_unlock(hdev);
2434 }
2435
2436 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2437                                     struct hci_conn *conn)
2438 {
2439         if (conn->state != BT_CONFIG || !conn->out)
2440                 return 0;
2441
2442         if (conn->pending_sec_level == BT_SECURITY_SDP)
2443                 return 0;
2444
2445         /* Only request authentication for SSP connections or non-SSP
2446          * devices with sec_level MEDIUM or HIGH or if MITM protection
2447          * is requested.
2448          */
2449         if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2450             conn->pending_sec_level != BT_SECURITY_FIPS &&
2451             conn->pending_sec_level != BT_SECURITY_HIGH &&
2452             conn->pending_sec_level != BT_SECURITY_MEDIUM)
2453                 return 0;
2454
2455         return 1;
2456 }
2457
2458 static int hci_resolve_name(struct hci_dev *hdev,
2459                                    struct inquiry_entry *e)
2460 {
2461         struct hci_cp_remote_name_req cp;
2462
2463         memset(&cp, 0, sizeof(cp));
2464
2465         bacpy(&cp.bdaddr, &e->data.bdaddr);
2466         cp.pscan_rep_mode = e->data.pscan_rep_mode;
2467         cp.pscan_mode = e->data.pscan_mode;
2468         cp.clock_offset = e->data.clock_offset;
2469
2470         return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2471 }
2472
2473 static bool hci_resolve_next_name(struct hci_dev *hdev)
2474 {
2475         struct discovery_state *discov = &hdev->discovery;
2476         struct inquiry_entry *e;
2477
2478         if (list_empty(&discov->resolve))
2479                 return false;
2480
2481         /* We should stop if we already spent too much time resolving names. */
2482         if (time_after(jiffies, discov->name_resolve_timeout)) {
2483                 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2484                 return false;
2485         }
2486
2487         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2488         if (!e)
2489                 return false;
2490
2491         if (hci_resolve_name(hdev, e) == 0) {
2492                 e->name_state = NAME_PENDING;
2493                 return true;
2494         }
2495
2496         return false;
2497 }
2498
2499 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2500                                    bdaddr_t *bdaddr, u8 *name, u8 name_len)
2501 {
2502         struct discovery_state *discov = &hdev->discovery;
2503         struct inquiry_entry *e;
2504
2505         /* Update the mgmt connected state if necessary. Be careful with
2506          * conn objects that exist but are not (yet) connected however.
2507          * Only those in BT_CONFIG or BT_CONNECTED states can be
2508          * considered connected.
2509          */
2510         if (conn &&
2511             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2512             !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2513                 mgmt_device_connected(hdev, conn, name, name_len);
2514
2515         if (discov->state == DISCOVERY_STOPPED)
2516                 return;
2517
2518         if (discov->state == DISCOVERY_STOPPING)
2519                 goto discov_complete;
2520
2521         if (discov->state != DISCOVERY_RESOLVING)
2522                 return;
2523
2524         e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2525         /* If the device was not found in a list of found devices names of which
2526          * are pending. there is no need to continue resolving a next name as it
2527          * will be done upon receiving another Remote Name Request Complete
2528          * Event */
2529         if (!e)
2530                 return;
2531
2532         list_del(&e->list);
2533
2534         e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2535         mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2536                          name, name_len);
2537
2538         if (hci_resolve_next_name(hdev))
2539                 return;
2540
2541 discov_complete:
2542         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2543 }
2544
2545 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2546 {
2547         struct hci_cp_remote_name_req *cp;
2548         struct hci_conn *conn;
2549
2550         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2551
2552         /* If successful wait for the name req complete event before
2553          * checking for the need to do authentication */
2554         if (!status)
2555                 return;
2556
2557         cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2558         if (!cp)
2559                 return;
2560
2561         hci_dev_lock(hdev);
2562
2563         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2564
2565         if (hci_dev_test_flag(hdev, HCI_MGMT))
2566                 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2567
2568         if (!conn)
2569                 goto unlock;
2570
2571         if (!hci_outgoing_auth_needed(hdev, conn))
2572                 goto unlock;
2573
2574         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2575                 struct hci_cp_auth_requested auth_cp;
2576
2577                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2578
2579                 auth_cp.handle = __cpu_to_le16(conn->handle);
2580                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2581                              sizeof(auth_cp), &auth_cp);
2582         }
2583
2584 unlock:
2585         hci_dev_unlock(hdev);
2586 }
2587
2588 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2589 {
2590         struct hci_cp_read_remote_features *cp;
2591         struct hci_conn *conn;
2592
2593         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2594
2595         if (!status)
2596                 return;
2597
2598         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
2599         if (!cp)
2600                 return;
2601
2602         hci_dev_lock(hdev);
2603
2604         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2605         if (conn) {
2606                 if (conn->state == BT_CONFIG) {
2607                         hci_connect_cfm(conn, status);
2608                         hci_conn_drop(conn);
2609                 }
2610         }
2611
2612         hci_dev_unlock(hdev);
2613 }
2614
2615 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2616 {
2617         struct hci_cp_read_remote_ext_features *cp;
2618         struct hci_conn *conn;
2619
2620         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2621
2622         if (!status)
2623                 return;
2624
2625         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2626         if (!cp)
2627                 return;
2628
2629         hci_dev_lock(hdev);
2630
2631         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2632         if (conn) {
2633                 if (conn->state == BT_CONFIG) {
2634                         hci_connect_cfm(conn, status);
2635                         hci_conn_drop(conn);
2636                 }
2637         }
2638
2639         hci_dev_unlock(hdev);
2640 }
2641
2642 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle,
2643                                        __u8 status)
2644 {
2645         struct hci_conn *acl;
2646         struct hci_link *link;
2647
2648         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status);
2649
2650         hci_dev_lock(hdev);
2651
2652         acl = hci_conn_hash_lookup_handle(hdev, handle);
2653         if (acl) {
2654                 link = list_first_entry_or_null(&acl->link_list,
2655                                                 struct hci_link, list);
2656                 if (link && link->conn) {
2657                         link->conn->state = BT_CLOSED;
2658
2659                         hci_connect_cfm(link->conn, status);
2660                         hci_conn_del(link->conn);
2661                 }
2662         }
2663
2664         hci_dev_unlock(hdev);
2665 }
2666
2667 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2668 {
2669         struct hci_cp_setup_sync_conn *cp;
2670
2671         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2672
2673         if (!status)
2674                 return;
2675
2676         cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2677         if (!cp)
2678                 return;
2679
2680         hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2681 }
2682
2683 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2684 {
2685         struct hci_cp_enhanced_setup_sync_conn *cp;
2686
2687         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2688
2689         if (!status)
2690                 return;
2691
2692         cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2693         if (!cp)
2694                 return;
2695
2696         hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2697 }
2698
2699 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2700 {
2701         struct hci_cp_sniff_mode *cp;
2702         struct hci_conn *conn;
2703
2704         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2705
2706         if (!status)
2707                 return;
2708
2709         cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2710         if (!cp)
2711                 return;
2712
2713         hci_dev_lock(hdev);
2714
2715         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2716         if (conn) {
2717                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2718
2719                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2720                         hci_sco_setup(conn, status);
2721         }
2722
2723         hci_dev_unlock(hdev);
2724 }
2725
2726 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2727 {
2728         struct hci_cp_exit_sniff_mode *cp;
2729         struct hci_conn *conn;
2730
2731         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2732
2733         if (!status)
2734                 return;
2735
2736         cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2737         if (!cp)
2738                 return;
2739
2740         hci_dev_lock(hdev);
2741
2742         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2743         if (conn) {
2744                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2745
2746                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2747                         hci_sco_setup(conn, status);
2748         }
2749
2750         hci_dev_unlock(hdev);
2751 }
2752
2753 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2754 {
2755         struct hci_cp_disconnect *cp;
2756         struct hci_conn_params *params;
2757         struct hci_conn *conn;
2758         bool mgmt_conn;
2759
2760         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2761
2762         /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2763          * otherwise cleanup the connection immediately.
2764          */
2765         if (!status && !hdev->suspended)
2766                 return;
2767
2768         cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2769         if (!cp)
2770                 return;
2771
2772         hci_dev_lock(hdev);
2773
2774         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2775         if (!conn)
2776                 goto unlock;
2777
2778         if (status) {
2779                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2780                                        conn->dst_type, status);
2781
2782                 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2783                         hdev->cur_adv_instance = conn->adv_instance;
2784                         hci_enable_advertising(hdev);
2785                 }
2786
2787                 /* Inform sockets conn is gone before we delete it */
2788                 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED);
2789
2790                 goto done;
2791         }
2792
2793         mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2794
2795         if (conn->type == ACL_LINK) {
2796                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2797                         hci_remove_link_key(hdev, &conn->dst);
2798         }
2799
2800         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2801         if (params) {
2802                 switch (params->auto_connect) {
2803                 case HCI_AUTO_CONN_LINK_LOSS:
2804                         if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2805                                 break;
2806                         fallthrough;
2807
2808                 case HCI_AUTO_CONN_DIRECT:
2809                 case HCI_AUTO_CONN_ALWAYS:
2810                         hci_pend_le_list_del_init(params);
2811                         hci_pend_le_list_add(params, &hdev->pend_le_conns);
2812                         break;
2813
2814                 default:
2815                         break;
2816                 }
2817         }
2818
2819         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2820                                  cp->reason, mgmt_conn);
2821
2822         hci_disconn_cfm(conn, cp->reason);
2823
2824 done:
2825         /* If the disconnection failed for any reason, the upper layer
2826          * does not retry to disconnect in current implementation.
2827          * Hence, we need to do some basic cleanup here and re-enable
2828          * advertising if necessary.
2829          */
2830         hci_conn_del(conn);
2831 unlock:
2832         hci_dev_unlock(hdev);
2833 }
2834
2835 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
2836 {
2837         /* When using controller based address resolution, then the new
2838          * address types 0x02 and 0x03 are used. These types need to be
2839          * converted back into either public address or random address type
2840          */
2841         switch (type) {
2842         case ADDR_LE_DEV_PUBLIC_RESOLVED:
2843                 if (resolved)
2844                         *resolved = true;
2845                 return ADDR_LE_DEV_PUBLIC;
2846         case ADDR_LE_DEV_RANDOM_RESOLVED:
2847                 if (resolved)
2848                         *resolved = true;
2849                 return ADDR_LE_DEV_RANDOM;
2850         }
2851
2852         if (resolved)
2853                 *resolved = false;
2854         return type;
2855 }
2856
2857 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
2858                               u8 peer_addr_type, u8 own_address_type,
2859                               u8 filter_policy)
2860 {
2861         struct hci_conn *conn;
2862
2863         conn = hci_conn_hash_lookup_le(hdev, peer_addr,
2864                                        peer_addr_type);
2865         if (!conn)
2866                 return;
2867
2868         own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
2869
2870         /* Store the initiator and responder address information which
2871          * is needed for SMP. These values will not change during the
2872          * lifetime of the connection.
2873          */
2874         conn->init_addr_type = own_address_type;
2875         if (own_address_type == ADDR_LE_DEV_RANDOM)
2876                 bacpy(&conn->init_addr, &hdev->random_addr);
2877         else
2878                 bacpy(&conn->init_addr, &hdev->bdaddr);
2879
2880         conn->resp_addr_type = peer_addr_type;
2881         bacpy(&conn->resp_addr, peer_addr);
2882 }
2883
2884 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
2885 {
2886         struct hci_cp_le_create_conn *cp;
2887
2888         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2889
2890         /* All connection failure handling is taken care of by the
2891          * hci_conn_failed function which is triggered by the HCI
2892          * request completion callbacks used for connecting.
2893          */
2894         if (status)
2895                 return;
2896
2897         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
2898         if (!cp)
2899                 return;
2900
2901         hci_dev_lock(hdev);
2902
2903         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2904                           cp->own_address_type, cp->filter_policy);
2905
2906         hci_dev_unlock(hdev);
2907 }
2908
2909 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
2910 {
2911         struct hci_cp_le_ext_create_conn *cp;
2912
2913         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2914
2915         /* All connection failure handling is taken care of by the
2916          * hci_conn_failed function which is triggered by the HCI
2917          * request completion callbacks used for connecting.
2918          */
2919         if (status)
2920                 return;
2921
2922         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
2923         if (!cp)
2924                 return;
2925
2926         hci_dev_lock(hdev);
2927
2928         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
2929                           cp->own_addr_type, cp->filter_policy);
2930
2931         hci_dev_unlock(hdev);
2932 }
2933
2934 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
2935 {
2936         struct hci_cp_le_read_remote_features *cp;
2937         struct hci_conn *conn;
2938
2939         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2940
2941         if (!status)
2942                 return;
2943
2944         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
2945         if (!cp)
2946                 return;
2947
2948         hci_dev_lock(hdev);
2949
2950         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2951         if (conn) {
2952                 if (conn->state == BT_CONFIG) {
2953                         hci_connect_cfm(conn, status);
2954                         hci_conn_drop(conn);
2955                 }
2956         }
2957
2958         hci_dev_unlock(hdev);
2959 }
2960
2961 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
2962 {
2963         struct hci_cp_le_start_enc *cp;
2964         struct hci_conn *conn;
2965
2966         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2967
2968         if (!status)
2969                 return;
2970
2971         hci_dev_lock(hdev);
2972
2973         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
2974         if (!cp)
2975                 goto unlock;
2976
2977         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2978         if (!conn)
2979                 goto unlock;
2980
2981         if (conn->state != BT_CONNECTED)
2982                 goto unlock;
2983
2984         hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
2985         hci_conn_drop(conn);
2986
2987 unlock:
2988         hci_dev_unlock(hdev);
2989 }
2990
2991 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
2992 {
2993         struct hci_cp_switch_role *cp;
2994         struct hci_conn *conn;
2995
2996         BT_DBG("%s status 0x%2.2x", hdev->name, status);
2997
2998         if (!status)
2999                 return;
3000
3001         cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3002         if (!cp)
3003                 return;
3004
3005         hci_dev_lock(hdev);
3006
3007         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3008         if (conn)
3009                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3010
3011         hci_dev_unlock(hdev);
3012 }
3013
3014 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3015                                      struct sk_buff *skb)
3016 {
3017         struct hci_ev_status *ev = data;
3018         struct discovery_state *discov = &hdev->discovery;
3019         struct inquiry_entry *e;
3020
3021         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3022
3023         hci_conn_check_pending(hdev);
3024
3025         if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3026                 return;
3027
3028         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3029         wake_up_bit(&hdev->flags, HCI_INQUIRY);
3030
3031         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3032                 return;
3033
3034         hci_dev_lock(hdev);
3035
3036         if (discov->state != DISCOVERY_FINDING)
3037                 goto unlock;
3038
3039         if (list_empty(&discov->resolve)) {
3040                 /* When BR/EDR inquiry is active and no LE scanning is in
3041                  * progress, then change discovery state to indicate completion.
3042                  *
3043                  * When running LE scanning and BR/EDR inquiry simultaneously
3044                  * and the LE scan already finished, then change the discovery
3045                  * state to indicate completion.
3046                  */
3047                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3048                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3049                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3050                 goto unlock;
3051         }
3052
3053         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3054         if (e && hci_resolve_name(hdev, e) == 0) {
3055                 e->name_state = NAME_PENDING;
3056                 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3057                 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3058         } else {
3059                 /* When BR/EDR inquiry is active and no LE scanning is in
3060                  * progress, then change discovery state to indicate completion.
3061                  *
3062                  * When running LE scanning and BR/EDR inquiry simultaneously
3063                  * and the LE scan already finished, then change the discovery
3064                  * state to indicate completion.
3065                  */
3066                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3067                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3068                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3069         }
3070
3071 unlock:
3072         hci_dev_unlock(hdev);
3073 }
3074
3075 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3076                                    struct sk_buff *skb)
3077 {
3078         struct hci_ev_inquiry_result *ev = edata;
3079         struct inquiry_data data;
3080         int i;
3081
3082         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3083                              flex_array_size(ev, info, ev->num)))
3084                 return;
3085
3086         bt_dev_dbg(hdev, "num %d", ev->num);
3087
3088         if (!ev->num)
3089                 return;
3090
3091         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3092                 return;
3093
3094         hci_dev_lock(hdev);
3095
3096         for (i = 0; i < ev->num; i++) {
3097                 struct inquiry_info *info = &ev->info[i];
3098                 u32 flags;
3099
3100                 bacpy(&data.bdaddr, &info->bdaddr);
3101                 data.pscan_rep_mode     = info->pscan_rep_mode;
3102                 data.pscan_period_mode  = info->pscan_period_mode;
3103                 data.pscan_mode         = info->pscan_mode;
3104                 memcpy(data.dev_class, info->dev_class, 3);
3105                 data.clock_offset       = info->clock_offset;
3106                 data.rssi               = HCI_RSSI_INVALID;
3107                 data.ssp_mode           = 0x00;
3108
3109                 flags = hci_inquiry_cache_update(hdev, &data, false);
3110
3111                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3112                                   info->dev_class, HCI_RSSI_INVALID,
3113                                   flags, NULL, 0, NULL, 0, 0);
3114         }
3115
3116         hci_dev_unlock(hdev);
3117 }
3118
3119 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3120                                   struct sk_buff *skb)
3121 {
3122         struct hci_ev_conn_complete *ev = data;
3123         struct hci_conn *conn;
3124         u8 status = ev->status;
3125
3126         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3127
3128         hci_dev_lock(hdev);
3129
3130         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3131         if (!conn) {
3132                 /* In case of error status and there is no connection pending
3133                  * just unlock as there is nothing to cleanup.
3134                  */
3135                 if (ev->status)
3136                         goto unlock;
3137
3138                 /* Connection may not exist if auto-connected. Check the bredr
3139                  * allowlist to see if this device is allowed to auto connect.
3140                  * If link is an ACL type, create a connection class
3141                  * automatically.
3142                  *
3143                  * Auto-connect will only occur if the event filter is
3144                  * programmed with a given address. Right now, event filter is
3145                  * only used during suspend.
3146                  */
3147                 if (ev->link_type == ACL_LINK &&
3148                     hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3149                                                       &ev->bdaddr,
3150                                                       BDADDR_BREDR)) {
3151                         conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3152                                             HCI_ROLE_SLAVE);
3153                         if (!conn) {
3154                                 bt_dev_err(hdev, "no memory for new conn");
3155                                 goto unlock;
3156                         }
3157                 } else {
3158                         if (ev->link_type != SCO_LINK)
3159                                 goto unlock;
3160
3161                         conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3162                                                        &ev->bdaddr);
3163                         if (!conn)
3164                                 goto unlock;
3165
3166                         conn->type = SCO_LINK;
3167                 }
3168         }
3169
3170         /* The HCI_Connection_Complete event is only sent once per connection.
3171          * Processing it more than once per connection can corrupt kernel memory.
3172          *
3173          * As the connection handle is set here for the first time, it indicates
3174          * whether the connection is already set up.
3175          */
3176         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
3177                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3178                 goto unlock;
3179         }
3180
3181         if (!status) {
3182                 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
3183                 if (status)
3184                         goto done;
3185
3186                 if (conn->type == ACL_LINK) {
3187                         conn->state = BT_CONFIG;
3188                         hci_conn_hold(conn);
3189
3190                         if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3191                             !hci_find_link_key(hdev, &ev->bdaddr))
3192                                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3193                         else
3194                                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3195                 } else
3196                         conn->state = BT_CONNECTED;
3197
3198                 hci_debugfs_create_conn(conn);
3199                 hci_conn_add_sysfs(conn);
3200
3201                 if (test_bit(HCI_AUTH, &hdev->flags))
3202                         set_bit(HCI_CONN_AUTH, &conn->flags);
3203
3204                 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3205                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3206
3207                 /* Get remote features */
3208                 if (conn->type == ACL_LINK) {
3209                         struct hci_cp_read_remote_features cp;
3210                         cp.handle = ev->handle;
3211                         hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3212                                      sizeof(cp), &cp);
3213
3214                         hci_update_scan(hdev);
3215                 }
3216
3217                 /* Set packet type for incoming connection */
3218                 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3219                         struct hci_cp_change_conn_ptype cp;
3220                         cp.handle = ev->handle;
3221                         cp.pkt_type = cpu_to_le16(conn->pkt_type);
3222                         hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3223                                      &cp);
3224                 }
3225         }
3226
3227         if (conn->type == ACL_LINK)
3228                 hci_sco_setup(conn, ev->status);
3229
3230 done:
3231         if (status) {
3232                 hci_conn_failed(conn, status);
3233         } else if (ev->link_type == SCO_LINK) {
3234                 switch (conn->setting & SCO_AIRMODE_MASK) {
3235                 case SCO_AIRMODE_CVSD:
3236                         if (hdev->notify)
3237                                 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3238                         break;
3239                 }
3240
3241                 hci_connect_cfm(conn, status);
3242         }
3243
3244 unlock:
3245         hci_dev_unlock(hdev);
3246
3247         hci_conn_check_pending(hdev);
3248 }
3249
3250 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3251 {
3252         struct hci_cp_reject_conn_req cp;
3253
3254         bacpy(&cp.bdaddr, bdaddr);
3255         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3256         hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3257 }
3258
3259 static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3260                                  struct sk_buff *skb)
3261 {
3262         struct hci_ev_conn_request *ev = data;
3263         int mask = hdev->link_mode;
3264         struct inquiry_entry *ie;
3265         struct hci_conn *conn;
3266         __u8 flags = 0;
3267
3268         bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3269
3270         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3271                                       &flags);
3272
3273         if (!(mask & HCI_LM_ACCEPT)) {
3274                 hci_reject_conn(hdev, &ev->bdaddr);
3275                 return;
3276         }
3277
3278         hci_dev_lock(hdev);
3279
3280         if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3281                                    BDADDR_BREDR)) {
3282                 hci_reject_conn(hdev, &ev->bdaddr);
3283                 goto unlock;
3284         }
3285
3286         /* Require HCI_CONNECTABLE or an accept list entry to accept the
3287          * connection. These features are only touched through mgmt so
3288          * only do the checks if HCI_MGMT is set.
3289          */
3290         if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3291             !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3292             !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3293                                                BDADDR_BREDR)) {
3294                 hci_reject_conn(hdev, &ev->bdaddr);
3295                 goto unlock;
3296         }
3297
3298         /* Connection accepted */
3299
3300         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3301         if (ie)
3302                 memcpy(ie->data.dev_class, ev->dev_class, 3);
3303
3304         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3305                         &ev->bdaddr);
3306         if (!conn) {
3307                 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
3308                                     HCI_ROLE_SLAVE);
3309                 if (!conn) {
3310                         bt_dev_err(hdev, "no memory for new connection");
3311                         goto unlock;
3312                 }
3313         }
3314
3315         memcpy(conn->dev_class, ev->dev_class, 3);
3316
3317         hci_dev_unlock(hdev);
3318
3319         if (ev->link_type == ACL_LINK ||
3320             (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3321                 struct hci_cp_accept_conn_req cp;
3322                 conn->state = BT_CONNECT;
3323
3324                 bacpy(&cp.bdaddr, &ev->bdaddr);
3325
3326                 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3327                         cp.role = 0x00; /* Become central */
3328                 else
3329                         cp.role = 0x01; /* Remain peripheral */
3330
3331                 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3332         } else if (!(flags & HCI_PROTO_DEFER)) {
3333                 struct hci_cp_accept_sync_conn_req cp;
3334                 conn->state = BT_CONNECT;
3335
3336                 bacpy(&cp.bdaddr, &ev->bdaddr);
3337                 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3338
3339                 cp.tx_bandwidth   = cpu_to_le32(0x00001f40);
3340                 cp.rx_bandwidth   = cpu_to_le32(0x00001f40);
3341                 cp.max_latency    = cpu_to_le16(0xffff);
3342                 cp.content_format = cpu_to_le16(hdev->voice_setting);
3343                 cp.retrans_effort = 0xff;
3344
3345                 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3346                              &cp);
3347         } else {
3348                 conn->state = BT_CONNECT2;
3349                 hci_connect_cfm(conn, 0);
3350         }
3351
3352         return;
3353 unlock:
3354         hci_dev_unlock(hdev);
3355 }
3356
3357 static u8 hci_to_mgmt_reason(u8 err)
3358 {
3359         switch (err) {
3360         case HCI_ERROR_CONNECTION_TIMEOUT:
3361                 return MGMT_DEV_DISCONN_TIMEOUT;
3362         case HCI_ERROR_REMOTE_USER_TERM:
3363         case HCI_ERROR_REMOTE_LOW_RESOURCES:
3364         case HCI_ERROR_REMOTE_POWER_OFF:
3365                 return MGMT_DEV_DISCONN_REMOTE;
3366         case HCI_ERROR_LOCAL_HOST_TERM:
3367                 return MGMT_DEV_DISCONN_LOCAL_HOST;
3368         default:
3369                 return MGMT_DEV_DISCONN_UNKNOWN;
3370         }
3371 }
3372
3373 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3374                                      struct sk_buff *skb)
3375 {
3376         struct hci_ev_disconn_complete *ev = data;
3377         u8 reason;
3378         struct hci_conn_params *params;
3379         struct hci_conn *conn;
3380         bool mgmt_connected;
3381
3382         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3383
3384         hci_dev_lock(hdev);
3385
3386         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3387         if (!conn)
3388                 goto unlock;
3389
3390         if (ev->status) {
3391                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3392                                        conn->dst_type, ev->status);
3393                 goto unlock;
3394         }
3395
3396         conn->state = BT_CLOSED;
3397
3398         mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3399
3400         if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3401                 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3402         else
3403                 reason = hci_to_mgmt_reason(ev->reason);
3404
3405         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3406                                 reason, mgmt_connected);
3407
3408         if (conn->type == ACL_LINK) {
3409                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3410                         hci_remove_link_key(hdev, &conn->dst);
3411
3412                 hci_update_scan(hdev);
3413         }
3414
3415         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3416         if (params) {
3417                 switch (params->auto_connect) {
3418                 case HCI_AUTO_CONN_LINK_LOSS:
3419                         if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3420                                 break;
3421                         fallthrough;
3422
3423                 case HCI_AUTO_CONN_DIRECT:
3424                 case HCI_AUTO_CONN_ALWAYS:
3425                         hci_pend_le_list_del_init(params);
3426                         hci_pend_le_list_add(params, &hdev->pend_le_conns);
3427                         hci_update_passive_scan(hdev);
3428                         break;
3429
3430                 default:
3431                         break;
3432                 }
3433         }
3434
3435         hci_disconn_cfm(conn, ev->reason);
3436
3437         /* Re-enable advertising if necessary, since it might
3438          * have been disabled by the connection. From the
3439          * HCI_LE_Set_Advertise_Enable command description in
3440          * the core specification (v4.0):
3441          * "The Controller shall continue advertising until the Host
3442          * issues an LE_Set_Advertise_Enable command with
3443          * Advertising_Enable set to 0x00 (Advertising is disabled)
3444          * or until a connection is created or until the Advertising
3445          * is timed out due to Directed Advertising."
3446          */
3447         if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3448                 hdev->cur_adv_instance = conn->adv_instance;
3449                 hci_enable_advertising(hdev);
3450         }
3451
3452         hci_conn_del(conn);
3453
3454 unlock:
3455         hci_dev_unlock(hdev);
3456 }
3457
3458 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3459                                   struct sk_buff *skb)
3460 {
3461         struct hci_ev_auth_complete *ev = data;
3462         struct hci_conn *conn;
3463
3464         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3465
3466         hci_dev_lock(hdev);
3467
3468         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3469         if (!conn)
3470                 goto unlock;
3471
3472         if (!ev->status) {
3473                 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3474
3475                 if (!hci_conn_ssp_enabled(conn) &&
3476                     test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
3477                         bt_dev_info(hdev, "re-auth of legacy device is not possible.");
3478                 } else {
3479                         set_bit(HCI_CONN_AUTH, &conn->flags);
3480                         conn->sec_level = conn->pending_sec_level;
3481                 }
3482         } else {
3483                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3484                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3485
3486                 mgmt_auth_failed(conn, ev->status);
3487         }
3488
3489         clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3490         clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
3491
3492         if (conn->state == BT_CONFIG) {
3493                 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3494                         struct hci_cp_set_conn_encrypt cp;
3495                         cp.handle  = ev->handle;
3496                         cp.encrypt = 0x01;
3497                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3498                                      &cp);
3499                 } else {
3500                         conn->state = BT_CONNECTED;
3501                         hci_connect_cfm(conn, ev->status);
3502                         hci_conn_drop(conn);
3503                 }
3504         } else {
3505                 hci_auth_cfm(conn, ev->status);
3506
3507                 hci_conn_hold(conn);
3508                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3509                 hci_conn_drop(conn);
3510         }
3511
3512         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3513                 if (!ev->status) {
3514                         struct hci_cp_set_conn_encrypt cp;
3515                         cp.handle  = ev->handle;
3516                         cp.encrypt = 0x01;
3517                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3518                                      &cp);
3519                 } else {
3520                         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3521                         hci_encrypt_cfm(conn, ev->status);
3522                 }
3523         }
3524
3525 unlock:
3526         hci_dev_unlock(hdev);
3527 }
3528
3529 static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3530                                 struct sk_buff *skb)
3531 {
3532         struct hci_ev_remote_name *ev = data;
3533         struct hci_conn *conn;
3534
3535         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3536
3537         hci_conn_check_pending(hdev);
3538
3539         hci_dev_lock(hdev);
3540
3541         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3542
3543         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3544                 goto check_auth;
3545
3546         if (ev->status == 0)
3547                 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3548                                        strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3549         else
3550                 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3551
3552 check_auth:
3553         if (!conn)
3554                 goto unlock;
3555
3556         if (!hci_outgoing_auth_needed(hdev, conn))
3557                 goto unlock;
3558
3559         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3560                 struct hci_cp_auth_requested cp;
3561
3562                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3563
3564                 cp.handle = __cpu_to_le16(conn->handle);
3565                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3566         }
3567
3568 unlock:
3569         hci_dev_unlock(hdev);
3570 }
3571
3572 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3573                                    struct sk_buff *skb)
3574 {
3575         struct hci_ev_encrypt_change *ev = data;
3576         struct hci_conn *conn;
3577
3578         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3579
3580         hci_dev_lock(hdev);
3581
3582         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3583         if (!conn)
3584                 goto unlock;
3585
3586         if (!ev->status) {
3587                 if (ev->encrypt) {
3588                         /* Encryption implies authentication */
3589                         set_bit(HCI_CONN_AUTH, &conn->flags);
3590                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3591                         conn->sec_level = conn->pending_sec_level;
3592
3593                         /* P-256 authentication key implies FIPS */
3594                         if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3595                                 set_bit(HCI_CONN_FIPS, &conn->flags);
3596
3597                         if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3598                             conn->type == LE_LINK)
3599                                 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3600                 } else {
3601                         clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3602                         clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3603                 }
3604         }
3605
3606         /* We should disregard the current RPA and generate a new one
3607          * whenever the encryption procedure fails.
3608          */
3609         if (ev->status && conn->type == LE_LINK) {
3610                 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3611                 hci_adv_instances_set_rpa_expired(hdev, true);
3612         }
3613
3614         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3615
3616         /* Check link security requirements are met */
3617         if (!hci_conn_check_link_mode(conn))
3618                 ev->status = HCI_ERROR_AUTH_FAILURE;
3619
3620         if (ev->status && conn->state == BT_CONNECTED) {
3621                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3622                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3623
3624                 /* Notify upper layers so they can cleanup before
3625                  * disconnecting.
3626                  */
3627                 hci_encrypt_cfm(conn, ev->status);
3628                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3629                 hci_conn_drop(conn);
3630                 goto unlock;
3631         }
3632
3633         /* Try reading the encryption key size for encrypted ACL links */
3634         if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3635                 struct hci_cp_read_enc_key_size cp;
3636
3637                 /* Only send HCI_Read_Encryption_Key_Size if the
3638                  * controller really supports it. If it doesn't, assume
3639                  * the default size (16).
3640                  */
3641                 if (!(hdev->commands[20] & 0x10)) {
3642                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3643                         goto notify;
3644                 }
3645
3646                 cp.handle = cpu_to_le16(conn->handle);
3647                 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3648                                  sizeof(cp), &cp)) {
3649                         bt_dev_err(hdev, "sending read key size failed");
3650                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3651                         goto notify;
3652                 }
3653
3654                 goto unlock;
3655         }
3656
3657         /* Set the default Authenticated Payload Timeout after
3658          * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3659          * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3660          * sent when the link is active and Encryption is enabled, the conn
3661          * type can be either LE or ACL and controller must support LMP Ping.
3662          * Ensure for AES-CCM encryption as well.
3663          */
3664         if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3665             test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3666             ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3667              (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3668                 struct hci_cp_write_auth_payload_to cp;
3669
3670                 cp.handle = cpu_to_le16(conn->handle);
3671                 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3672                 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3673                                  sizeof(cp), &cp)) {
3674                         bt_dev_err(hdev, "write auth payload timeout failed");
3675                         goto notify;
3676                 }
3677
3678                 goto unlock;
3679         }
3680
3681 notify:
3682         hci_encrypt_cfm(conn, ev->status);
3683
3684 unlock:
3685         hci_dev_unlock(hdev);
3686 }
3687
3688 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3689                                              struct sk_buff *skb)
3690 {
3691         struct hci_ev_change_link_key_complete *ev = data;
3692         struct hci_conn *conn;
3693
3694         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3695
3696         hci_dev_lock(hdev);
3697
3698         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3699         if (conn) {
3700                 if (!ev->status)
3701                         set_bit(HCI_CONN_SECURE, &conn->flags);
3702
3703                 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3704
3705                 hci_key_change_cfm(conn, ev->status);
3706         }
3707
3708         hci_dev_unlock(hdev);
3709 }
3710
3711 static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3712                                     struct sk_buff *skb)
3713 {
3714         struct hci_ev_remote_features *ev = data;
3715         struct hci_conn *conn;
3716
3717         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3718
3719         hci_dev_lock(hdev);
3720
3721         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3722         if (!conn)
3723                 goto unlock;
3724
3725         if (!ev->status)
3726                 memcpy(conn->features[0], ev->features, 8);
3727
3728         if (conn->state != BT_CONFIG)
3729                 goto unlock;
3730
3731         if (!ev->status && lmp_ext_feat_capable(hdev) &&
3732             lmp_ext_feat_capable(conn)) {
3733                 struct hci_cp_read_remote_ext_features cp;
3734                 cp.handle = ev->handle;
3735                 cp.page = 0x01;
3736                 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3737                              sizeof(cp), &cp);
3738                 goto unlock;
3739         }
3740
3741         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3742                 struct hci_cp_remote_name_req cp;
3743                 memset(&cp, 0, sizeof(cp));
3744                 bacpy(&cp.bdaddr, &conn->dst);
3745                 cp.pscan_rep_mode = 0x02;
3746                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3747         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3748                 mgmt_device_connected(hdev, conn, NULL, 0);
3749
3750         if (!hci_outgoing_auth_needed(hdev, conn)) {
3751                 conn->state = BT_CONNECTED;
3752                 hci_connect_cfm(conn, ev->status);
3753                 hci_conn_drop(conn);
3754         }
3755
3756 unlock:
3757         hci_dev_unlock(hdev);
3758 }
3759
3760 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3761 {
3762         cancel_delayed_work(&hdev->cmd_timer);
3763
3764         rcu_read_lock();
3765         if (!test_bit(HCI_RESET, &hdev->flags)) {
3766                 if (ncmd) {
3767                         cancel_delayed_work(&hdev->ncmd_timer);
3768                         atomic_set(&hdev->cmd_cnt, 1);
3769                 } else {
3770                         if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3771                                 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3772                                                    HCI_NCMD_TIMEOUT);
3773                 }
3774         }
3775         rcu_read_unlock();
3776 }
3777
3778 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
3779                                         struct sk_buff *skb)
3780 {
3781         struct hci_rp_le_read_buffer_size_v2 *rp = data;
3782
3783         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3784
3785         if (rp->status)
3786                 return rp->status;
3787
3788         hdev->le_mtu   = __le16_to_cpu(rp->acl_mtu);
3789         hdev->le_pkts  = rp->acl_max_pkt;
3790         hdev->iso_mtu  = __le16_to_cpu(rp->iso_mtu);
3791         hdev->iso_pkts = rp->iso_max_pkt;
3792
3793         hdev->le_cnt  = hdev->le_pkts;
3794         hdev->iso_cnt = hdev->iso_pkts;
3795
3796         BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
3797                hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
3798
3799         return rp->status;
3800 }
3801
3802 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status)
3803 {
3804         struct hci_conn *conn, *tmp;
3805
3806         lockdep_assert_held(&hdev->lock);
3807
3808         list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
3809                 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) ||
3810                     conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig)
3811                         continue;
3812
3813                 if (HCI_CONN_HANDLE_UNSET(conn->handle))
3814                         hci_conn_failed(conn, status);
3815         }
3816 }
3817
3818 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
3819                                    struct sk_buff *skb)
3820 {
3821         struct hci_rp_le_set_cig_params *rp = data;
3822         struct hci_cp_le_set_cig_params *cp;
3823         struct hci_conn *conn;
3824         u8 status = rp->status;
3825         bool pending = false;
3826         int i;
3827
3828         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3829
3830         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS);
3831         if (!rp->status && (!cp || rp->num_handles != cp->num_cis ||
3832                             rp->cig_id != cp->cig_id)) {
3833                 bt_dev_err(hdev, "unexpected Set CIG Parameters response data");
3834                 status = HCI_ERROR_UNSPECIFIED;
3835         }
3836
3837         hci_dev_lock(hdev);
3838
3839         /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554
3840          *
3841          * If the Status return parameter is non-zero, then the state of the CIG
3842          * and its CIS configurations shall not be changed by the command. If
3843          * the CIG did not already exist, it shall not be created.
3844          */
3845         if (status) {
3846                 /* Keep current configuration, fail only the unbound CIS */
3847                 hci_unbound_cis_failed(hdev, rp->cig_id, status);
3848                 goto unlock;
3849         }
3850
3851         /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553
3852          *
3853          * If the Status return parameter is zero, then the Controller shall
3854          * set the Connection_Handle arrayed return parameter to the connection
3855          * handle(s) corresponding to the CIS configurations specified in
3856          * the CIS_IDs command parameter, in the same order.
3857          */
3858         for (i = 0; i < rp->num_handles; ++i) {
3859                 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id,
3860                                                 cp->cis[i].cis_id);
3861                 if (!conn || !bacmp(&conn->dst, BDADDR_ANY))
3862                         continue;
3863
3864                 if (conn->state != BT_BOUND && conn->state != BT_CONNECT)
3865                         continue;
3866
3867                 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i])))
3868                         continue;
3869
3870                 if (conn->state == BT_CONNECT)
3871                         pending = true;
3872         }
3873
3874 unlock:
3875         if (pending)
3876                 hci_le_create_cis_pending(hdev);
3877
3878         hci_dev_unlock(hdev);
3879
3880         return rp->status;
3881 }
3882
3883 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3884                                    struct sk_buff *skb)
3885 {
3886         struct hci_rp_le_setup_iso_path *rp = data;
3887         struct hci_cp_le_setup_iso_path *cp;
3888         struct hci_conn *conn;
3889
3890         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3891
3892         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3893         if (!cp)
3894                 return rp->status;
3895
3896         hci_dev_lock(hdev);
3897
3898         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3899         if (!conn)
3900                 goto unlock;
3901
3902         if (rp->status) {
3903                 hci_connect_cfm(conn, rp->status);
3904                 hci_conn_del(conn);
3905                 goto unlock;
3906         }
3907
3908         switch (cp->direction) {
3909         /* Input (Host to Controller) */
3910         case 0x00:
3911                 /* Only confirm connection if output only */
3912                 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu)
3913                         hci_connect_cfm(conn, rp->status);
3914                 break;
3915         /* Output (Controller to Host) */
3916         case 0x01:
3917                 /* Confirm connection since conn->iso_qos is always configured
3918                  * last.
3919                  */
3920                 hci_connect_cfm(conn, rp->status);
3921                 break;
3922         }
3923
3924 unlock:
3925         hci_dev_unlock(hdev);
3926         return rp->status;
3927 }
3928
3929 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
3930 {
3931         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3932 }
3933
3934 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
3935                                    struct sk_buff *skb)
3936 {
3937         struct hci_ev_status *rp = data;
3938         struct hci_cp_le_set_per_adv_params *cp;
3939
3940         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3941
3942         if (rp->status)
3943                 return rp->status;
3944
3945         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
3946         if (!cp)
3947                 return rp->status;
3948
3949         /* TODO: set the conn state */
3950         return rp->status;
3951 }
3952
3953 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
3954                                        struct sk_buff *skb)
3955 {
3956         struct hci_ev_status *rp = data;
3957         struct hci_cp_le_set_per_adv_enable *cp;
3958         struct adv_info *adv = NULL, *n;
3959         u8 per_adv_cnt = 0;
3960
3961         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3962
3963         if (rp->status)
3964                 return rp->status;
3965
3966         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
3967         if (!cp)
3968                 return rp->status;
3969
3970         hci_dev_lock(hdev);
3971
3972         adv = hci_find_adv_instance(hdev, cp->handle);
3973
3974         if (cp->enable) {
3975                 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
3976
3977                 if (adv)
3978                         adv->enabled = true;
3979         } else {
3980                 /* If just one instance was disabled check if there are
3981                  * any other instance enabled before clearing HCI_LE_PER_ADV.
3982                  * The current periodic adv instance will be marked as
3983                  * disabled once extended advertising is also disabled.
3984                  */
3985                 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
3986                                          list) {
3987                         if (adv->periodic && adv->enabled)
3988                                 per_adv_cnt++;
3989                 }
3990
3991                 if (per_adv_cnt > 1)
3992                         goto unlock;
3993
3994                 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
3995         }
3996
3997 unlock:
3998         hci_dev_unlock(hdev);
3999
4000         return rp->status;
4001 }
4002
4003 #define HCI_CC_VL(_op, _func, _min, _max) \
4004 { \
4005         .op = _op, \
4006         .func = _func, \
4007         .min_len = _min, \
4008         .max_len = _max, \
4009 }
4010
4011 #define HCI_CC(_op, _func, _len) \
4012         HCI_CC_VL(_op, _func, _len, _len)
4013
4014 #define HCI_CC_STATUS(_op, _func) \
4015         HCI_CC(_op, _func, sizeof(struct hci_ev_status))
4016
4017 static const struct hci_cc {
4018         u16  op;
4019         u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4020         u16  min_len;
4021         u16  max_len;
4022 } hci_cc_table[] = {
4023         HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4024         HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4025         HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4026         HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4027                       hci_cc_remote_name_req_cancel),
4028         HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4029                sizeof(struct hci_rp_role_discovery)),
4030         HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4031                sizeof(struct hci_rp_read_link_policy)),
4032         HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4033                sizeof(struct hci_rp_write_link_policy)),
4034         HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4035                sizeof(struct hci_rp_read_def_link_policy)),
4036         HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4037                       hci_cc_write_def_link_policy),
4038         HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4039         HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4040                sizeof(struct hci_rp_read_stored_link_key)),
4041         HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4042                sizeof(struct hci_rp_delete_stored_link_key)),
4043         HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4044         HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4045                sizeof(struct hci_rp_read_local_name)),
4046         HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4047         HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4048         HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4049         HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4050         HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4051                sizeof(struct hci_rp_read_class_of_dev)),
4052         HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4053         HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4054                sizeof(struct hci_rp_read_voice_setting)),
4055         HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4056         HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4057                sizeof(struct hci_rp_read_num_supported_iac)),
4058         HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4059         HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4060         HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4061                sizeof(struct hci_rp_read_auth_payload_to)),
4062         HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4063                sizeof(struct hci_rp_write_auth_payload_to)),
4064         HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4065                sizeof(struct hci_rp_read_local_version)),
4066         HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4067                sizeof(struct hci_rp_read_local_commands)),
4068         HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4069                sizeof(struct hci_rp_read_local_features)),
4070         HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4071                sizeof(struct hci_rp_read_local_ext_features)),
4072         HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4073                sizeof(struct hci_rp_read_buffer_size)),
4074         HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4075                sizeof(struct hci_rp_read_bd_addr)),
4076         HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4077                sizeof(struct hci_rp_read_local_pairing_opts)),
4078         HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4079                sizeof(struct hci_rp_read_page_scan_activity)),
4080         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4081                       hci_cc_write_page_scan_activity),
4082         HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4083                sizeof(struct hci_rp_read_page_scan_type)),
4084         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4085         HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4086                sizeof(struct hci_rp_read_data_block_size)),
4087         HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4088                sizeof(struct hci_rp_read_flow_control_mode)),
4089         HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4090                sizeof(struct hci_rp_read_local_amp_info)),
4091         HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4092                sizeof(struct hci_rp_read_clock)),
4093         HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4094                sizeof(struct hci_rp_read_enc_key_size)),
4095         HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4096                sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4097         HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4098                hci_cc_read_def_err_data_reporting,
4099                sizeof(struct hci_rp_read_def_err_data_reporting)),
4100         HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4101                       hci_cc_write_def_err_data_reporting),
4102         HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4103                sizeof(struct hci_rp_pin_code_reply)),
4104         HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4105                sizeof(struct hci_rp_pin_code_neg_reply)),
4106         HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4107                sizeof(struct hci_rp_read_local_oob_data)),
4108         HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4109                sizeof(struct hci_rp_read_local_oob_ext_data)),
4110         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4111                sizeof(struct hci_rp_le_read_buffer_size)),
4112         HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4113                sizeof(struct hci_rp_le_read_local_features)),
4114         HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4115                sizeof(struct hci_rp_le_read_adv_tx_power)),
4116         HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4117                sizeof(struct hci_rp_user_confirm_reply)),
4118         HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4119                sizeof(struct hci_rp_user_confirm_reply)),
4120         HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4121                sizeof(struct hci_rp_user_confirm_reply)),
4122         HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4123                sizeof(struct hci_rp_user_confirm_reply)),
4124         HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4125         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4126         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4127         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4128         HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4129                hci_cc_le_read_accept_list_size,
4130                sizeof(struct hci_rp_le_read_accept_list_size)),
4131         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4132         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4133                       hci_cc_le_add_to_accept_list),
4134         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4135                       hci_cc_le_del_from_accept_list),
4136         HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4137                sizeof(struct hci_rp_le_read_supported_states)),
4138         HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4139                sizeof(struct hci_rp_le_read_def_data_len)),
4140         HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4141                       hci_cc_le_write_def_data_len),
4142         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4143                       hci_cc_le_add_to_resolv_list),
4144         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4145                       hci_cc_le_del_from_resolv_list),
4146         HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4147                       hci_cc_le_clear_resolv_list),
4148         HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4149                sizeof(struct hci_rp_le_read_resolv_list_size)),
4150         HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4151                       hci_cc_le_set_addr_resolution_enable),
4152         HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4153                sizeof(struct hci_rp_le_read_max_data_len)),
4154         HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4155                       hci_cc_write_le_host_supported),
4156         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4157         HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4158                sizeof(struct hci_rp_read_rssi)),
4159         HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4160                sizeof(struct hci_rp_read_tx_power)),
4161         HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4162         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4163                       hci_cc_le_set_ext_scan_param),
4164         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4165                       hci_cc_le_set_ext_scan_enable),
4166         HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4167         HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4168                hci_cc_le_read_num_adv_sets,
4169                sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4170         HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4171                sizeof(struct hci_rp_le_set_ext_adv_params)),
4172         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4173                       hci_cc_le_set_ext_adv_enable),
4174         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4175                       hci_cc_le_set_adv_set_random_addr),
4176         HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4177         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4178         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4179         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4180                       hci_cc_le_set_per_adv_enable),
4181         HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4182                sizeof(struct hci_rp_le_read_transmit_power)),
4183         HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4184         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4185                sizeof(struct hci_rp_le_read_buffer_size_v2)),
4186         HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4187                   sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4188         HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4189                sizeof(struct hci_rp_le_setup_iso_path)),
4190 };
4191
4192 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4193                       struct sk_buff *skb)
4194 {
4195         void *data;
4196
4197         if (skb->len < cc->min_len) {
4198                 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4199                            cc->op, skb->len, cc->min_len);
4200                 return HCI_ERROR_UNSPECIFIED;
4201         }
4202
4203         /* Just warn if the length is over max_len size it still be possible to
4204          * partially parse the cc so leave to callback to decide if that is
4205          * acceptable.
4206          */
4207         if (skb->len > cc->max_len)
4208                 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4209                             cc->op, skb->len, cc->max_len);
4210
4211         data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4212         if (!data)
4213                 return HCI_ERROR_UNSPECIFIED;
4214
4215         return cc->func(hdev, data, skb);
4216 }
4217
4218 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4219                                  struct sk_buff *skb, u16 *opcode, u8 *status,
4220                                  hci_req_complete_t *req_complete,
4221                                  hci_req_complete_skb_t *req_complete_skb)
4222 {
4223         struct hci_ev_cmd_complete *ev = data;
4224         int i;
4225
4226         *opcode = __le16_to_cpu(ev->opcode);
4227
4228         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4229
4230         for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4231                 if (hci_cc_table[i].op == *opcode) {
4232                         *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4233                         break;
4234                 }
4235         }
4236
4237         if (i == ARRAY_SIZE(hci_cc_table)) {
4238                 /* Unknown opcode, assume byte 0 contains the status, so
4239                  * that e.g. __hci_cmd_sync() properly returns errors
4240                  * for vendor specific commands send by HCI drivers.
4241                  * If a vendor doesn't actually follow this convention we may
4242                  * need to introduce a vendor CC table in order to properly set
4243                  * the status.
4244                  */
4245                 *status = skb->data[0];
4246         }
4247
4248         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4249
4250         hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4251                              req_complete_skb);
4252
4253         if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4254                 bt_dev_err(hdev,
4255                            "unexpected event for opcode 0x%4.4x", *opcode);
4256                 return;
4257         }
4258
4259         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4260                 queue_work(hdev->workqueue, &hdev->cmd_work);
4261 }
4262
4263 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4264 {
4265         struct hci_cp_le_create_cis *cp;
4266         bool pending = false;
4267         int i;
4268
4269         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4270
4271         if (!status)
4272                 return;
4273
4274         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4275         if (!cp)
4276                 return;
4277
4278         hci_dev_lock(hdev);
4279
4280         /* Remove connection if command failed */
4281         for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4282                 struct hci_conn *conn;
4283                 u16 handle;
4284
4285                 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4286
4287                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4288                 if (conn) {
4289                         if (test_and_clear_bit(HCI_CONN_CREATE_CIS,
4290                                                &conn->flags))
4291                                 pending = true;
4292                         conn->state = BT_CLOSED;
4293                         hci_connect_cfm(conn, status);
4294                         hci_conn_del(conn);
4295                 }
4296         }
4297
4298         if (pending)
4299                 hci_le_create_cis_pending(hdev);
4300
4301         hci_dev_unlock(hdev);
4302 }
4303
4304 #define HCI_CS(_op, _func) \
4305 { \
4306         .op = _op, \
4307         .func = _func, \
4308 }
4309
4310 static const struct hci_cs {
4311         u16  op;
4312         void (*func)(struct hci_dev *hdev, __u8 status);
4313 } hci_cs_table[] = {
4314         HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4315         HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4316         HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4317         HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4318         HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4319         HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4320         HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4321         HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4322         HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4323                hci_cs_read_remote_ext_features),
4324         HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4325         HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4326                hci_cs_enhanced_setup_sync_conn),
4327         HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4328         HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4329         HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4330         HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4331         HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4332         HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4333         HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4334         HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4335         HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4336 };
4337
4338 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4339                                struct sk_buff *skb, u16 *opcode, u8 *status,
4340                                hci_req_complete_t *req_complete,
4341                                hci_req_complete_skb_t *req_complete_skb)
4342 {
4343         struct hci_ev_cmd_status *ev = data;
4344         int i;
4345
4346         *opcode = __le16_to_cpu(ev->opcode);
4347         *status = ev->status;
4348
4349         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4350
4351         for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4352                 if (hci_cs_table[i].op == *opcode) {
4353                         hci_cs_table[i].func(hdev, ev->status);
4354                         break;
4355                 }
4356         }
4357
4358         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4359
4360         /* Indicate request completion if the command failed. Also, if
4361          * we're not waiting for a special event and we get a success
4362          * command status we should try to flag the request as completed
4363          * (since for this kind of commands there will not be a command
4364          * complete event).
4365          */
4366         if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4367                 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4368                                      req_complete_skb);
4369                 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4370                         bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4371                                    *opcode);
4372                         return;
4373                 }
4374         }
4375
4376         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4377                 queue_work(hdev->workqueue, &hdev->cmd_work);
4378 }
4379
4380 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4381                                    struct sk_buff *skb)
4382 {
4383         struct hci_ev_hardware_error *ev = data;
4384
4385         bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4386
4387         hdev->hw_error_code = ev->code;
4388
4389         queue_work(hdev->req_workqueue, &hdev->error_reset);
4390 }
4391
4392 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4393                                 struct sk_buff *skb)
4394 {
4395         struct hci_ev_role_change *ev = data;
4396         struct hci_conn *conn;
4397
4398         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4399
4400         hci_dev_lock(hdev);
4401
4402         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4403         if (conn) {
4404                 if (!ev->status)
4405                         conn->role = ev->role;
4406
4407                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4408
4409                 hci_role_switch_cfm(conn, ev->status, ev->role);
4410         }
4411
4412         hci_dev_unlock(hdev);
4413 }
4414
4415 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4416                                   struct sk_buff *skb)
4417 {
4418         struct hci_ev_num_comp_pkts *ev = data;
4419         int i;
4420
4421         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4422                              flex_array_size(ev, handles, ev->num)))
4423                 return;
4424
4425         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4426                 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4427                 return;
4428         }
4429
4430         bt_dev_dbg(hdev, "num %d", ev->num);
4431
4432         for (i = 0; i < ev->num; i++) {
4433                 struct hci_comp_pkts_info *info = &ev->handles[i];
4434                 struct hci_conn *conn;
4435                 __u16  handle, count;
4436
4437                 handle = __le16_to_cpu(info->handle);
4438                 count  = __le16_to_cpu(info->count);
4439
4440                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4441                 if (!conn)
4442                         continue;
4443
4444                 conn->sent -= count;
4445
4446                 switch (conn->type) {
4447                 case ACL_LINK:
4448                         hdev->acl_cnt += count;
4449                         if (hdev->acl_cnt > hdev->acl_pkts)
4450                                 hdev->acl_cnt = hdev->acl_pkts;
4451                         break;
4452
4453                 case LE_LINK:
4454                         if (hdev->le_pkts) {
4455                                 hdev->le_cnt += count;
4456                                 if (hdev->le_cnt > hdev->le_pkts)
4457                                         hdev->le_cnt = hdev->le_pkts;
4458                         } else {
4459                                 hdev->acl_cnt += count;
4460                                 if (hdev->acl_cnt > hdev->acl_pkts)
4461                                         hdev->acl_cnt = hdev->acl_pkts;
4462                         }
4463                         break;
4464
4465                 case SCO_LINK:
4466                         hdev->sco_cnt += count;
4467                         if (hdev->sco_cnt > hdev->sco_pkts)
4468                                 hdev->sco_cnt = hdev->sco_pkts;
4469                         break;
4470
4471                 case ISO_LINK:
4472                         if (hdev->iso_pkts) {
4473                                 hdev->iso_cnt += count;
4474                                 if (hdev->iso_cnt > hdev->iso_pkts)
4475                                         hdev->iso_cnt = hdev->iso_pkts;
4476                         } else if (hdev->le_pkts) {
4477                                 hdev->le_cnt += count;
4478                                 if (hdev->le_cnt > hdev->le_pkts)
4479                                         hdev->le_cnt = hdev->le_pkts;
4480                         } else {
4481                                 hdev->acl_cnt += count;
4482                                 if (hdev->acl_cnt > hdev->acl_pkts)
4483                                         hdev->acl_cnt = hdev->acl_pkts;
4484                         }
4485                         break;
4486
4487                 default:
4488                         bt_dev_err(hdev, "unknown type %d conn %p",
4489                                    conn->type, conn);
4490                         break;
4491                 }
4492         }
4493
4494         queue_work(hdev->workqueue, &hdev->tx_work);
4495 }
4496
4497 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4498                                                  __u16 handle)
4499 {
4500         struct hci_chan *chan;
4501
4502         switch (hdev->dev_type) {
4503         case HCI_PRIMARY:
4504                 return hci_conn_hash_lookup_handle(hdev, handle);
4505         case HCI_AMP:
4506                 chan = hci_chan_lookup_handle(hdev, handle);
4507                 if (chan)
4508                         return chan->conn;
4509                 break;
4510         default:
4511                 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4512                 break;
4513         }
4514
4515         return NULL;
4516 }
4517
4518 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4519                                     struct sk_buff *skb)
4520 {
4521         struct hci_ev_num_comp_blocks *ev = data;
4522         int i;
4523
4524         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4525                              flex_array_size(ev, handles, ev->num_hndl)))
4526                 return;
4527
4528         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4529                 bt_dev_err(hdev, "wrong event for mode %d",
4530                            hdev->flow_ctl_mode);
4531                 return;
4532         }
4533
4534         bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4535                    ev->num_hndl);
4536
4537         for (i = 0; i < ev->num_hndl; i++) {
4538                 struct hci_comp_blocks_info *info = &ev->handles[i];
4539                 struct hci_conn *conn = NULL;
4540                 __u16  handle, block_count;
4541
4542                 handle = __le16_to_cpu(info->handle);
4543                 block_count = __le16_to_cpu(info->blocks);
4544
4545                 conn = __hci_conn_lookup_handle(hdev, handle);
4546                 if (!conn)
4547                         continue;
4548
4549                 conn->sent -= block_count;
4550
4551                 switch (conn->type) {
4552                 case ACL_LINK:
4553                 case AMP_LINK:
4554                         hdev->block_cnt += block_count;
4555                         if (hdev->block_cnt > hdev->num_blocks)
4556                                 hdev->block_cnt = hdev->num_blocks;
4557                         break;
4558
4559                 default:
4560                         bt_dev_err(hdev, "unknown type %d conn %p",
4561                                    conn->type, conn);
4562                         break;
4563                 }
4564         }
4565
4566         queue_work(hdev->workqueue, &hdev->tx_work);
4567 }
4568
4569 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4570                                 struct sk_buff *skb)
4571 {
4572         struct hci_ev_mode_change *ev = data;
4573         struct hci_conn *conn;
4574
4575         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4576
4577         hci_dev_lock(hdev);
4578
4579         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4580         if (conn) {
4581                 conn->mode = ev->mode;
4582
4583                 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4584                                         &conn->flags)) {
4585                         if (conn->mode == HCI_CM_ACTIVE)
4586                                 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4587                         else
4588                                 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4589                 }
4590
4591                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4592                         hci_sco_setup(conn, ev->status);
4593         }
4594
4595         hci_dev_unlock(hdev);
4596 }
4597
4598 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4599                                      struct sk_buff *skb)
4600 {
4601         struct hci_ev_pin_code_req *ev = data;
4602         struct hci_conn *conn;
4603
4604         bt_dev_dbg(hdev, "");
4605
4606         hci_dev_lock(hdev);
4607
4608         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4609         if (!conn)
4610                 goto unlock;
4611
4612         if (conn->state == BT_CONNECTED) {
4613                 hci_conn_hold(conn);
4614                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4615                 hci_conn_drop(conn);
4616         }
4617
4618         if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4619             !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4620                 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4621                              sizeof(ev->bdaddr), &ev->bdaddr);
4622         } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4623                 u8 secure;
4624
4625                 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4626                         secure = 1;
4627                 else
4628                         secure = 0;
4629
4630                 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4631         }
4632
4633 unlock:
4634         hci_dev_unlock(hdev);
4635 }
4636
4637 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4638 {
4639         if (key_type == HCI_LK_CHANGED_COMBINATION)
4640                 return;
4641
4642         conn->pin_length = pin_len;
4643         conn->key_type = key_type;
4644
4645         switch (key_type) {
4646         case HCI_LK_LOCAL_UNIT:
4647         case HCI_LK_REMOTE_UNIT:
4648         case HCI_LK_DEBUG_COMBINATION:
4649                 return;
4650         case HCI_LK_COMBINATION:
4651                 if (pin_len == 16)
4652                         conn->pending_sec_level = BT_SECURITY_HIGH;
4653                 else
4654                         conn->pending_sec_level = BT_SECURITY_MEDIUM;
4655                 break;
4656         case HCI_LK_UNAUTH_COMBINATION_P192:
4657         case HCI_LK_UNAUTH_COMBINATION_P256:
4658                 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4659                 break;
4660         case HCI_LK_AUTH_COMBINATION_P192:
4661                 conn->pending_sec_level = BT_SECURITY_HIGH;
4662                 break;
4663         case HCI_LK_AUTH_COMBINATION_P256:
4664                 conn->pending_sec_level = BT_SECURITY_FIPS;
4665                 break;
4666         }
4667 }
4668
4669 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4670                                      struct sk_buff *skb)
4671 {
4672         struct hci_ev_link_key_req *ev = data;
4673         struct hci_cp_link_key_reply cp;
4674         struct hci_conn *conn;
4675         struct link_key *key;
4676
4677         bt_dev_dbg(hdev, "");
4678
4679         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4680                 return;
4681
4682         hci_dev_lock(hdev);
4683
4684         key = hci_find_link_key(hdev, &ev->bdaddr);
4685         if (!key) {
4686                 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4687                 goto not_found;
4688         }
4689
4690         bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4691
4692         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4693         if (conn) {
4694                 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4695
4696                 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4697                      key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4698                     conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4699                         bt_dev_dbg(hdev, "ignoring unauthenticated key");
4700                         goto not_found;
4701                 }
4702
4703                 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4704                     (conn->pending_sec_level == BT_SECURITY_HIGH ||
4705                      conn->pending_sec_level == BT_SECURITY_FIPS)) {
4706                         bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4707                         goto not_found;
4708                 }
4709
4710                 conn_set_key(conn, key->type, key->pin_len);
4711         }
4712
4713         bacpy(&cp.bdaddr, &ev->bdaddr);
4714         memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4715
4716         hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4717
4718         hci_dev_unlock(hdev);
4719
4720         return;
4721
4722 not_found:
4723         hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4724         hci_dev_unlock(hdev);
4725 }
4726
4727 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4728                                     struct sk_buff *skb)
4729 {
4730         struct hci_ev_link_key_notify *ev = data;
4731         struct hci_conn *conn;
4732         struct link_key *key;
4733         bool persistent;
4734         u8 pin_len = 0;
4735
4736         bt_dev_dbg(hdev, "");
4737
4738         hci_dev_lock(hdev);
4739
4740         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4741         if (!conn)
4742                 goto unlock;
4743
4744         hci_conn_hold(conn);
4745         conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4746         hci_conn_drop(conn);
4747
4748         set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4749         conn_set_key(conn, ev->key_type, conn->pin_length);
4750
4751         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4752                 goto unlock;
4753
4754         key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4755                                 ev->key_type, pin_len, &persistent);
4756         if (!key)
4757                 goto unlock;
4758
4759         /* Update connection information since adding the key will have
4760          * fixed up the type in the case of changed combination keys.
4761          */
4762         if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4763                 conn_set_key(conn, key->type, key->pin_len);
4764
4765         mgmt_new_link_key(hdev, key, persistent);
4766
4767         /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4768          * is set. If it's not set simply remove the key from the kernel
4769          * list (we've still notified user space about it but with
4770          * store_hint being 0).
4771          */
4772         if (key->type == HCI_LK_DEBUG_COMBINATION &&
4773             !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4774                 list_del_rcu(&key->list);
4775                 kfree_rcu(key, rcu);
4776                 goto unlock;
4777         }
4778
4779         if (persistent)
4780                 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4781         else
4782                 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4783
4784 unlock:
4785         hci_dev_unlock(hdev);
4786 }
4787
4788 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4789                                  struct sk_buff *skb)
4790 {
4791         struct hci_ev_clock_offset *ev = data;
4792         struct hci_conn *conn;
4793
4794         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4795
4796         hci_dev_lock(hdev);
4797
4798         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4799         if (conn && !ev->status) {
4800                 struct inquiry_entry *ie;
4801
4802                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4803                 if (ie) {
4804                         ie->data.clock_offset = ev->clock_offset;
4805                         ie->timestamp = jiffies;
4806                 }
4807         }
4808
4809         hci_dev_unlock(hdev);
4810 }
4811
4812 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4813                                     struct sk_buff *skb)
4814 {
4815         struct hci_ev_pkt_type_change *ev = data;
4816         struct hci_conn *conn;
4817
4818         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4819
4820         hci_dev_lock(hdev);
4821
4822         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4823         if (conn && !ev->status)
4824                 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4825
4826         hci_dev_unlock(hdev);
4827 }
4828
4829 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4830                                    struct sk_buff *skb)
4831 {
4832         struct hci_ev_pscan_rep_mode *ev = data;
4833         struct inquiry_entry *ie;
4834
4835         bt_dev_dbg(hdev, "");
4836
4837         hci_dev_lock(hdev);
4838
4839         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4840         if (ie) {
4841                 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4842                 ie->timestamp = jiffies;
4843         }
4844
4845         hci_dev_unlock(hdev);
4846 }
4847
4848 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4849                                              struct sk_buff *skb)
4850 {
4851         struct hci_ev_inquiry_result_rssi *ev = edata;
4852         struct inquiry_data data;
4853         int i;
4854
4855         bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4856
4857         if (!ev->num)
4858                 return;
4859
4860         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4861                 return;
4862
4863         hci_dev_lock(hdev);
4864
4865         if (skb->len == array_size(ev->num,
4866                                    sizeof(struct inquiry_info_rssi_pscan))) {
4867                 struct inquiry_info_rssi_pscan *info;
4868
4869                 for (i = 0; i < ev->num; i++) {
4870                         u32 flags;
4871
4872                         info = hci_ev_skb_pull(hdev, skb,
4873                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4874                                                sizeof(*info));
4875                         if (!info) {
4876                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4877                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4878                                 goto unlock;
4879                         }
4880
4881                         bacpy(&data.bdaddr, &info->bdaddr);
4882                         data.pscan_rep_mode     = info->pscan_rep_mode;
4883                         data.pscan_period_mode  = info->pscan_period_mode;
4884                         data.pscan_mode         = info->pscan_mode;
4885                         memcpy(data.dev_class, info->dev_class, 3);
4886                         data.clock_offset       = info->clock_offset;
4887                         data.rssi               = info->rssi;
4888                         data.ssp_mode           = 0x00;
4889
4890                         flags = hci_inquiry_cache_update(hdev, &data, false);
4891
4892                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4893                                           info->dev_class, info->rssi,
4894                                           flags, NULL, 0, NULL, 0, 0);
4895                 }
4896         } else if (skb->len == array_size(ev->num,
4897                                           sizeof(struct inquiry_info_rssi))) {
4898                 struct inquiry_info_rssi *info;
4899
4900                 for (i = 0; i < ev->num; i++) {
4901                         u32 flags;
4902
4903                         info = hci_ev_skb_pull(hdev, skb,
4904                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4905                                                sizeof(*info));
4906                         if (!info) {
4907                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4908                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4909                                 goto unlock;
4910                         }
4911
4912                         bacpy(&data.bdaddr, &info->bdaddr);
4913                         data.pscan_rep_mode     = info->pscan_rep_mode;
4914                         data.pscan_period_mode  = info->pscan_period_mode;
4915                         data.pscan_mode         = 0x00;
4916                         memcpy(data.dev_class, info->dev_class, 3);
4917                         data.clock_offset       = info->clock_offset;
4918                         data.rssi               = info->rssi;
4919                         data.ssp_mode           = 0x00;
4920
4921                         flags = hci_inquiry_cache_update(hdev, &data, false);
4922
4923                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4924                                           info->dev_class, info->rssi,
4925                                           flags, NULL, 0, NULL, 0, 0);
4926                 }
4927         } else {
4928                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4929                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4930         }
4931 unlock:
4932         hci_dev_unlock(hdev);
4933 }
4934
4935 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
4936                                         struct sk_buff *skb)
4937 {
4938         struct hci_ev_remote_ext_features *ev = data;
4939         struct hci_conn *conn;
4940
4941         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4942
4943         hci_dev_lock(hdev);
4944
4945         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4946         if (!conn)
4947                 goto unlock;
4948
4949         if (ev->page < HCI_MAX_PAGES)
4950                 memcpy(conn->features[ev->page], ev->features, 8);
4951
4952         if (!ev->status && ev->page == 0x01) {
4953                 struct inquiry_entry *ie;
4954
4955                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4956                 if (ie)
4957                         ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4958
4959                 if (ev->features[0] & LMP_HOST_SSP) {
4960                         set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4961                 } else {
4962                         /* It is mandatory by the Bluetooth specification that
4963                          * Extended Inquiry Results are only used when Secure
4964                          * Simple Pairing is enabled, but some devices violate
4965                          * this.
4966                          *
4967                          * To make these devices work, the internal SSP
4968                          * enabled flag needs to be cleared if the remote host
4969                          * features do not indicate SSP support */
4970                         clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4971                 }
4972
4973                 if (ev->features[0] & LMP_HOST_SC)
4974                         set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
4975         }
4976
4977         if (conn->state != BT_CONFIG)
4978                 goto unlock;
4979
4980         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
4981                 struct hci_cp_remote_name_req cp;
4982                 memset(&cp, 0, sizeof(cp));
4983                 bacpy(&cp.bdaddr, &conn->dst);
4984                 cp.pscan_rep_mode = 0x02;
4985                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
4986         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4987                 mgmt_device_connected(hdev, conn, NULL, 0);
4988
4989         if (!hci_outgoing_auth_needed(hdev, conn)) {
4990                 conn->state = BT_CONNECTED;
4991                 hci_connect_cfm(conn, ev->status);
4992                 hci_conn_drop(conn);
4993         }
4994
4995 unlock:
4996         hci_dev_unlock(hdev);
4997 }
4998
4999 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
5000                                        struct sk_buff *skb)
5001 {
5002         struct hci_ev_sync_conn_complete *ev = data;
5003         struct hci_conn *conn;
5004         u8 status = ev->status;
5005
5006         switch (ev->link_type) {
5007         case SCO_LINK:
5008         case ESCO_LINK:
5009                 break;
5010         default:
5011                 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
5012                  * for HCI_Synchronous_Connection_Complete is limited to
5013                  * either SCO or eSCO
5014                  */
5015                 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
5016                 return;
5017         }
5018
5019         bt_dev_dbg(hdev, "status 0x%2.2x", status);
5020
5021         hci_dev_lock(hdev);
5022
5023         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
5024         if (!conn) {
5025                 if (ev->link_type == ESCO_LINK)
5026                         goto unlock;
5027
5028                 /* When the link type in the event indicates SCO connection
5029                  * and lookup of the connection object fails, then check
5030                  * if an eSCO connection object exists.
5031                  *
5032                  * The core limits the synchronous connections to either
5033                  * SCO or eSCO. The eSCO connection is preferred and tried
5034                  * to be setup first and until successfully established,
5035                  * the link type will be hinted as eSCO.
5036                  */
5037                 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
5038                 if (!conn)
5039                         goto unlock;
5040         }
5041
5042         /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
5043          * Processing it more than once per connection can corrupt kernel memory.
5044          *
5045          * As the connection handle is set here for the first time, it indicates
5046          * whether the connection is already set up.
5047          */
5048         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5049                 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5050                 goto unlock;
5051         }
5052
5053         switch (status) {
5054         case 0x00:
5055                 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
5056                 if (status) {
5057                         conn->state = BT_CLOSED;
5058                         break;
5059                 }
5060
5061                 conn->state  = BT_CONNECTED;
5062                 conn->type   = ev->link_type;
5063
5064                 hci_debugfs_create_conn(conn);
5065                 hci_conn_add_sysfs(conn);
5066                 break;
5067
5068         case 0x10:      /* Connection Accept Timeout */
5069         case 0x0d:      /* Connection Rejected due to Limited Resources */
5070         case 0x11:      /* Unsupported Feature or Parameter Value */
5071         case 0x1c:      /* SCO interval rejected */
5072         case 0x1a:      /* Unsupported Remote Feature */
5073         case 0x1e:      /* Invalid LMP Parameters */
5074         case 0x1f:      /* Unspecified error */
5075         case 0x20:      /* Unsupported LMP Parameter value */
5076                 if (conn->out) {
5077                         conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5078                                         (hdev->esco_type & EDR_ESCO_MASK);
5079                         if (hci_setup_sync(conn, conn->parent->handle))
5080                                 goto unlock;
5081                 }
5082                 fallthrough;
5083
5084         default:
5085                 conn->state = BT_CLOSED;
5086                 break;
5087         }
5088
5089         bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5090         /* Notify only in case of SCO over HCI transport data path which
5091          * is zero and non-zero value shall be non-HCI transport data path
5092          */
5093         if (conn->codec.data_path == 0 && hdev->notify) {
5094                 switch (ev->air_mode) {
5095                 case 0x02:
5096                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5097                         break;
5098                 case 0x03:
5099                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5100                         break;
5101                 }
5102         }
5103
5104         hci_connect_cfm(conn, status);
5105         if (status)
5106                 hci_conn_del(conn);
5107
5108 unlock:
5109         hci_dev_unlock(hdev);
5110 }
5111
5112 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5113 {
5114         size_t parsed = 0;
5115
5116         while (parsed < eir_len) {
5117                 u8 field_len = eir[0];
5118
5119                 if (field_len == 0)
5120                         return parsed;
5121
5122                 parsed += field_len + 1;
5123                 eir += field_len + 1;
5124         }
5125
5126         return eir_len;
5127 }
5128
5129 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5130                                             struct sk_buff *skb)
5131 {
5132         struct hci_ev_ext_inquiry_result *ev = edata;
5133         struct inquiry_data data;
5134         size_t eir_len;
5135         int i;
5136
5137         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5138                              flex_array_size(ev, info, ev->num)))
5139                 return;
5140
5141         bt_dev_dbg(hdev, "num %d", ev->num);
5142
5143         if (!ev->num)
5144                 return;
5145
5146         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5147                 return;
5148
5149         hci_dev_lock(hdev);
5150
5151         for (i = 0; i < ev->num; i++) {
5152                 struct extended_inquiry_info *info = &ev->info[i];
5153                 u32 flags;
5154                 bool name_known;
5155
5156                 bacpy(&data.bdaddr, &info->bdaddr);
5157                 data.pscan_rep_mode     = info->pscan_rep_mode;
5158                 data.pscan_period_mode  = info->pscan_period_mode;
5159                 data.pscan_mode         = 0x00;
5160                 memcpy(data.dev_class, info->dev_class, 3);
5161                 data.clock_offset       = info->clock_offset;
5162                 data.rssi               = info->rssi;
5163                 data.ssp_mode           = 0x01;
5164
5165                 if (hci_dev_test_flag(hdev, HCI_MGMT))
5166                         name_known = eir_get_data(info->data,
5167                                                   sizeof(info->data),
5168                                                   EIR_NAME_COMPLETE, NULL);
5169                 else
5170                         name_known = true;
5171
5172                 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5173
5174                 eir_len = eir_get_length(info->data, sizeof(info->data));
5175
5176                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5177                                   info->dev_class, info->rssi,
5178                                   flags, info->data, eir_len, NULL, 0, 0);
5179         }
5180
5181         hci_dev_unlock(hdev);
5182 }
5183
5184 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5185                                          struct sk_buff *skb)
5186 {
5187         struct hci_ev_key_refresh_complete *ev = data;
5188         struct hci_conn *conn;
5189
5190         bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5191                    __le16_to_cpu(ev->handle));
5192
5193         hci_dev_lock(hdev);
5194
5195         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5196         if (!conn)
5197                 goto unlock;
5198
5199         /* For BR/EDR the necessary steps are taken through the
5200          * auth_complete event.
5201          */
5202         if (conn->type != LE_LINK)
5203                 goto unlock;
5204
5205         if (!ev->status)
5206                 conn->sec_level = conn->pending_sec_level;
5207
5208         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5209
5210         if (ev->status && conn->state == BT_CONNECTED) {
5211                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5212                 hci_conn_drop(conn);
5213                 goto unlock;
5214         }
5215
5216         if (conn->state == BT_CONFIG) {
5217                 if (!ev->status)
5218                         conn->state = BT_CONNECTED;
5219
5220                 hci_connect_cfm(conn, ev->status);
5221                 hci_conn_drop(conn);
5222         } else {
5223                 hci_auth_cfm(conn, ev->status);
5224
5225                 hci_conn_hold(conn);
5226                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5227                 hci_conn_drop(conn);
5228         }
5229
5230 unlock:
5231         hci_dev_unlock(hdev);
5232 }
5233
5234 static u8 hci_get_auth_req(struct hci_conn *conn)
5235 {
5236         /* If remote requests no-bonding follow that lead */
5237         if (conn->remote_auth == HCI_AT_NO_BONDING ||
5238             conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5239                 return conn->remote_auth | (conn->auth_type & 0x01);
5240
5241         /* If both remote and local have enough IO capabilities, require
5242          * MITM protection
5243          */
5244         if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5245             conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5246                 return conn->remote_auth | 0x01;
5247
5248         /* No MITM protection possible so ignore remote requirement */
5249         return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5250 }
5251
5252 static u8 bredr_oob_data_present(struct hci_conn *conn)
5253 {
5254         struct hci_dev *hdev = conn->hdev;
5255         struct oob_data *data;
5256
5257         data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5258         if (!data)
5259                 return 0x00;
5260
5261         if (bredr_sc_enabled(hdev)) {
5262                 /* When Secure Connections is enabled, then just
5263                  * return the present value stored with the OOB
5264                  * data. The stored value contains the right present
5265                  * information. However it can only be trusted when
5266                  * not in Secure Connection Only mode.
5267                  */
5268                 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5269                         return data->present;
5270
5271                 /* When Secure Connections Only mode is enabled, then
5272                  * the P-256 values are required. If they are not
5273                  * available, then do not declare that OOB data is
5274                  * present.
5275                  */
5276                 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
5277                     !memcmp(data->hash256, ZERO_KEY, 16))
5278                         return 0x00;
5279
5280                 return 0x02;
5281         }
5282
5283         /* When Secure Connections is not enabled or actually
5284          * not supported by the hardware, then check that if
5285          * P-192 data values are present.
5286          */
5287         if (!memcmp(data->rand192, ZERO_KEY, 16) ||
5288             !memcmp(data->hash192, ZERO_KEY, 16))
5289                 return 0x00;
5290
5291         return 0x01;
5292 }
5293
5294 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5295                                     struct sk_buff *skb)
5296 {
5297         struct hci_ev_io_capa_request *ev = data;
5298         struct hci_conn *conn;
5299
5300         bt_dev_dbg(hdev, "");
5301
5302         hci_dev_lock(hdev);
5303
5304         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5305         if (!conn)
5306                 goto unlock;
5307
5308         hci_conn_hold(conn);
5309
5310         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5311                 goto unlock;
5312
5313         /* Allow pairing if we're pairable, the initiators of the
5314          * pairing or if the remote is not requesting bonding.
5315          */
5316         if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5317             test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5318             (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5319                 struct hci_cp_io_capability_reply cp;
5320
5321                 bacpy(&cp.bdaddr, &ev->bdaddr);
5322                 /* Change the IO capability from KeyboardDisplay
5323                  * to DisplayYesNo as it is not supported by BT spec. */
5324                 cp.capability = (conn->io_capability == 0x04) ?
5325                                 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5326
5327                 /* If we are initiators, there is no remote information yet */
5328                 if (conn->remote_auth == 0xff) {
5329                         /* Request MITM protection if our IO caps allow it
5330                          * except for the no-bonding case.
5331                          */
5332                         if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5333                             conn->auth_type != HCI_AT_NO_BONDING)
5334                                 conn->auth_type |= 0x01;
5335                 } else {
5336                         conn->auth_type = hci_get_auth_req(conn);
5337                 }
5338
5339                 /* If we're not bondable, force one of the non-bondable
5340                  * authentication requirement values.
5341                  */
5342                 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5343                         conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5344
5345                 cp.authentication = conn->auth_type;
5346                 cp.oob_data = bredr_oob_data_present(conn);
5347
5348                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5349                              sizeof(cp), &cp);
5350         } else {
5351                 struct hci_cp_io_capability_neg_reply cp;
5352
5353                 bacpy(&cp.bdaddr, &ev->bdaddr);
5354                 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5355
5356                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5357                              sizeof(cp), &cp);
5358         }
5359
5360 unlock:
5361         hci_dev_unlock(hdev);
5362 }
5363
5364 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5365                                   struct sk_buff *skb)
5366 {
5367         struct hci_ev_io_capa_reply *ev = data;
5368         struct hci_conn *conn;
5369
5370         bt_dev_dbg(hdev, "");
5371
5372         hci_dev_lock(hdev);
5373
5374         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5375         if (!conn)
5376                 goto unlock;
5377
5378         conn->remote_cap = ev->capability;
5379         conn->remote_auth = ev->authentication;
5380
5381 unlock:
5382         hci_dev_unlock(hdev);
5383 }
5384
5385 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5386                                          struct sk_buff *skb)
5387 {
5388         struct hci_ev_user_confirm_req *ev = data;
5389         int loc_mitm, rem_mitm, confirm_hint = 0;
5390         struct hci_conn *conn;
5391
5392         bt_dev_dbg(hdev, "");
5393
5394         hci_dev_lock(hdev);
5395
5396         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5397                 goto unlock;
5398
5399         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5400         if (!conn)
5401                 goto unlock;
5402
5403         loc_mitm = (conn->auth_type & 0x01);
5404         rem_mitm = (conn->remote_auth & 0x01);
5405
5406         /* If we require MITM but the remote device can't provide that
5407          * (it has NoInputNoOutput) then reject the confirmation
5408          * request. We check the security level here since it doesn't
5409          * necessarily match conn->auth_type.
5410          */
5411         if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5412             conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5413                 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5414                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5415                              sizeof(ev->bdaddr), &ev->bdaddr);
5416                 goto unlock;
5417         }
5418
5419         /* If no side requires MITM protection; auto-accept */
5420         if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5421             (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5422
5423                 /* If we're not the initiators request authorization to
5424                  * proceed from user space (mgmt_user_confirm with
5425                  * confirm_hint set to 1). The exception is if neither
5426                  * side had MITM or if the local IO capability is
5427                  * NoInputNoOutput, in which case we do auto-accept
5428                  */
5429                 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5430                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5431                     (loc_mitm || rem_mitm)) {
5432                         bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5433                         confirm_hint = 1;
5434                         goto confirm;
5435                 }
5436
5437                 /* If there already exists link key in local host, leave the
5438                  * decision to user space since the remote device could be
5439                  * legitimate or malicious.
5440                  */
5441                 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5442                         bt_dev_dbg(hdev, "Local host already has link key");
5443                         confirm_hint = 1;
5444                         goto confirm;
5445                 }
5446
5447                 BT_DBG("Auto-accept of user confirmation with %ums delay",
5448                        hdev->auto_accept_delay);
5449
5450                 if (hdev->auto_accept_delay > 0) {
5451                         int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5452                         queue_delayed_work(conn->hdev->workqueue,
5453                                            &conn->auto_accept_work, delay);
5454                         goto unlock;
5455                 }
5456
5457                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5458                              sizeof(ev->bdaddr), &ev->bdaddr);
5459                 goto unlock;
5460         }
5461
5462 confirm:
5463         mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5464                                   le32_to_cpu(ev->passkey), confirm_hint);
5465
5466 unlock:
5467         hci_dev_unlock(hdev);
5468 }
5469
5470 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5471                                          struct sk_buff *skb)
5472 {
5473         struct hci_ev_user_passkey_req *ev = data;
5474
5475         bt_dev_dbg(hdev, "");
5476
5477         if (hci_dev_test_flag(hdev, HCI_MGMT))
5478                 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5479 }
5480
5481 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5482                                         struct sk_buff *skb)
5483 {
5484         struct hci_ev_user_passkey_notify *ev = data;
5485         struct hci_conn *conn;
5486
5487         bt_dev_dbg(hdev, "");
5488
5489         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5490         if (!conn)
5491                 return;
5492
5493         conn->passkey_notify = __le32_to_cpu(ev->passkey);
5494         conn->passkey_entered = 0;
5495
5496         if (hci_dev_test_flag(hdev, HCI_MGMT))
5497                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5498                                          conn->dst_type, conn->passkey_notify,
5499                                          conn->passkey_entered);
5500 }
5501
5502 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5503                                     struct sk_buff *skb)
5504 {
5505         struct hci_ev_keypress_notify *ev = data;
5506         struct hci_conn *conn;
5507
5508         bt_dev_dbg(hdev, "");
5509
5510         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5511         if (!conn)
5512                 return;
5513
5514         switch (ev->type) {
5515         case HCI_KEYPRESS_STARTED:
5516                 conn->passkey_entered = 0;
5517                 return;
5518
5519         case HCI_KEYPRESS_ENTERED:
5520                 conn->passkey_entered++;
5521                 break;
5522
5523         case HCI_KEYPRESS_ERASED:
5524                 conn->passkey_entered--;
5525                 break;
5526
5527         case HCI_KEYPRESS_CLEARED:
5528                 conn->passkey_entered = 0;
5529                 break;
5530
5531         case HCI_KEYPRESS_COMPLETED:
5532                 return;
5533         }
5534
5535         if (hci_dev_test_flag(hdev, HCI_MGMT))
5536                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5537                                          conn->dst_type, conn->passkey_notify,
5538                                          conn->passkey_entered);
5539 }
5540
5541 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5542                                          struct sk_buff *skb)
5543 {
5544         struct hci_ev_simple_pair_complete *ev = data;
5545         struct hci_conn *conn;
5546
5547         bt_dev_dbg(hdev, "");
5548
5549         hci_dev_lock(hdev);
5550
5551         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5552         if (!conn)
5553                 goto unlock;
5554
5555         /* Reset the authentication requirement to unknown */
5556         conn->remote_auth = 0xff;
5557
5558         /* To avoid duplicate auth_failed events to user space we check
5559          * the HCI_CONN_AUTH_PEND flag which will be set if we
5560          * initiated the authentication. A traditional auth_complete
5561          * event gets always produced as initiator and is also mapped to
5562          * the mgmt_auth_failed event */
5563         if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5564                 mgmt_auth_failed(conn, ev->status);
5565
5566         hci_conn_drop(conn);
5567
5568 unlock:
5569         hci_dev_unlock(hdev);
5570 }
5571
5572 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5573                                          struct sk_buff *skb)
5574 {
5575         struct hci_ev_remote_host_features *ev = data;
5576         struct inquiry_entry *ie;
5577         struct hci_conn *conn;
5578
5579         bt_dev_dbg(hdev, "");
5580
5581         hci_dev_lock(hdev);
5582
5583         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5584         if (conn)
5585                 memcpy(conn->features[1], ev->features, 8);
5586
5587         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5588         if (ie)
5589                 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5590
5591         hci_dev_unlock(hdev);
5592 }
5593
5594 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5595                                             struct sk_buff *skb)
5596 {
5597         struct hci_ev_remote_oob_data_request *ev = edata;
5598         struct oob_data *data;
5599
5600         bt_dev_dbg(hdev, "");
5601
5602         hci_dev_lock(hdev);
5603
5604         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5605                 goto unlock;
5606
5607         data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5608         if (!data) {
5609                 struct hci_cp_remote_oob_data_neg_reply cp;
5610
5611                 bacpy(&cp.bdaddr, &ev->bdaddr);
5612                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5613                              sizeof(cp), &cp);
5614                 goto unlock;
5615         }
5616
5617         if (bredr_sc_enabled(hdev)) {
5618                 struct hci_cp_remote_oob_ext_data_reply cp;
5619
5620                 bacpy(&cp.bdaddr, &ev->bdaddr);
5621                 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5622                         memset(cp.hash192, 0, sizeof(cp.hash192));
5623                         memset(cp.rand192, 0, sizeof(cp.rand192));
5624                 } else {
5625                         memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5626                         memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5627                 }
5628                 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5629                 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5630
5631                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5632                              sizeof(cp), &cp);
5633         } else {
5634                 struct hci_cp_remote_oob_data_reply cp;
5635
5636                 bacpy(&cp.bdaddr, &ev->bdaddr);
5637                 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5638                 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5639
5640                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5641                              sizeof(cp), &cp);
5642         }
5643
5644 unlock:
5645         hci_dev_unlock(hdev);
5646 }
5647
5648 #if IS_ENABLED(CONFIG_BT_HS)
5649 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5650                                   struct sk_buff *skb)
5651 {
5652         struct hci_ev_channel_selected *ev = data;
5653         struct hci_conn *hcon;
5654
5655         bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5656
5657         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5658         if (!hcon)
5659                 return;
5660
5661         amp_read_loc_assoc_final_data(hdev, hcon);
5662 }
5663
5664 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5665                                       struct sk_buff *skb)
5666 {
5667         struct hci_ev_phy_link_complete *ev = data;
5668         struct hci_conn *hcon, *bredr_hcon;
5669
5670         bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5671                    ev->status);
5672
5673         hci_dev_lock(hdev);
5674
5675         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5676         if (!hcon)
5677                 goto unlock;
5678
5679         if (!hcon->amp_mgr)
5680                 goto unlock;
5681
5682         if (ev->status) {
5683                 hci_conn_del(hcon);
5684                 goto unlock;
5685         }
5686
5687         bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5688
5689         hcon->state = BT_CONNECTED;
5690         bacpy(&hcon->dst, &bredr_hcon->dst);
5691
5692         hci_conn_hold(hcon);
5693         hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5694         hci_conn_drop(hcon);
5695
5696         hci_debugfs_create_conn(hcon);
5697         hci_conn_add_sysfs(hcon);
5698
5699         amp_physical_cfm(bredr_hcon, hcon);
5700
5701 unlock:
5702         hci_dev_unlock(hdev);
5703 }
5704
5705 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5706                                      struct sk_buff *skb)
5707 {
5708         struct hci_ev_logical_link_complete *ev = data;
5709         struct hci_conn *hcon;
5710         struct hci_chan *hchan;
5711         struct amp_mgr *mgr;
5712
5713         bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5714                    le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5715
5716         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5717         if (!hcon)
5718                 return;
5719
5720         /* Create AMP hchan */
5721         hchan = hci_chan_create(hcon);
5722         if (!hchan)
5723                 return;
5724
5725         hchan->handle = le16_to_cpu(ev->handle);
5726         hchan->amp = true;
5727
5728         BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5729
5730         mgr = hcon->amp_mgr;
5731         if (mgr && mgr->bredr_chan) {
5732                 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5733
5734                 l2cap_chan_lock(bredr_chan);
5735
5736                 bredr_chan->conn->mtu = hdev->block_mtu;
5737                 l2cap_logical_cfm(bredr_chan, hchan, 0);
5738                 hci_conn_hold(hcon);
5739
5740                 l2cap_chan_unlock(bredr_chan);
5741         }
5742 }
5743
5744 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5745                                              struct sk_buff *skb)
5746 {
5747         struct hci_ev_disconn_logical_link_complete *ev = data;
5748         struct hci_chan *hchan;
5749
5750         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5751                    le16_to_cpu(ev->handle), ev->status);
5752
5753         if (ev->status)
5754                 return;
5755
5756         hci_dev_lock(hdev);
5757
5758         hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5759         if (!hchan || !hchan->amp)
5760                 goto unlock;
5761
5762         amp_destroy_logical_link(hchan, ev->reason);
5763
5764 unlock:
5765         hci_dev_unlock(hdev);
5766 }
5767
5768 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5769                                              struct sk_buff *skb)
5770 {
5771         struct hci_ev_disconn_phy_link_complete *ev = data;
5772         struct hci_conn *hcon;
5773
5774         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5775
5776         if (ev->status)
5777                 return;
5778
5779         hci_dev_lock(hdev);
5780
5781         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5782         if (hcon && hcon->type == AMP_LINK) {
5783                 hcon->state = BT_CLOSED;
5784                 hci_disconn_cfm(hcon, ev->reason);
5785                 hci_conn_del(hcon);
5786         }
5787
5788         hci_dev_unlock(hdev);
5789 }
5790 #endif
5791
5792 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5793                                 u8 bdaddr_type, bdaddr_t *local_rpa)
5794 {
5795         if (conn->out) {
5796                 conn->dst_type = bdaddr_type;
5797                 conn->resp_addr_type = bdaddr_type;
5798                 bacpy(&conn->resp_addr, bdaddr);
5799
5800                 /* Check if the controller has set a Local RPA then it must be
5801                  * used instead or hdev->rpa.
5802                  */
5803                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5804                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5805                         bacpy(&conn->init_addr, local_rpa);
5806                 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5807                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5808                         bacpy(&conn->init_addr, &conn->hdev->rpa);
5809                 } else {
5810                         hci_copy_identity_address(conn->hdev, &conn->init_addr,
5811                                                   &conn->init_addr_type);
5812                 }
5813         } else {
5814                 conn->resp_addr_type = conn->hdev->adv_addr_type;
5815                 /* Check if the controller has set a Local RPA then it must be
5816                  * used instead or hdev->rpa.
5817                  */
5818                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5819                         conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5820                         bacpy(&conn->resp_addr, local_rpa);
5821                 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5822                         /* In case of ext adv, resp_addr will be updated in
5823                          * Adv Terminated event.
5824                          */
5825                         if (!ext_adv_capable(conn->hdev))
5826                                 bacpy(&conn->resp_addr,
5827                                       &conn->hdev->random_addr);
5828                 } else {
5829                         bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5830                 }
5831
5832                 conn->init_addr_type = bdaddr_type;
5833                 bacpy(&conn->init_addr, bdaddr);
5834
5835                 /* For incoming connections, set the default minimum
5836                  * and maximum connection interval. They will be used
5837                  * to check if the parameters are in range and if not
5838                  * trigger the connection update procedure.
5839                  */
5840                 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5841                 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5842         }
5843 }
5844
5845 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5846                                  bdaddr_t *bdaddr, u8 bdaddr_type,
5847                                  bdaddr_t *local_rpa, u8 role, u16 handle,
5848                                  u16 interval, u16 latency,
5849                                  u16 supervision_timeout)
5850 {
5851         struct hci_conn_params *params;
5852         struct hci_conn *conn;
5853         struct smp_irk *irk;
5854         u8 addr_type;
5855
5856         hci_dev_lock(hdev);
5857
5858         /* All controllers implicitly stop advertising in the event of a
5859          * connection, so ensure that the state bit is cleared.
5860          */
5861         hci_dev_clear_flag(hdev, HCI_LE_ADV);
5862
5863         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
5864         if (!conn) {
5865                 /* In case of error status and there is no connection pending
5866                  * just unlock as there is nothing to cleanup.
5867                  */
5868                 if (status)
5869                         goto unlock;
5870
5871                 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role);
5872                 if (!conn) {
5873                         bt_dev_err(hdev, "no memory for new connection");
5874                         goto unlock;
5875                 }
5876
5877                 conn->dst_type = bdaddr_type;
5878
5879                 /* If we didn't have a hci_conn object previously
5880                  * but we're in central role this must be something
5881                  * initiated using an accept list. Since accept list based
5882                  * connections are not "first class citizens" we don't
5883                  * have full tracking of them. Therefore, we go ahead
5884                  * with a "best effort" approach of determining the
5885                  * initiator address based on the HCI_PRIVACY flag.
5886                  */
5887                 if (conn->out) {
5888                         conn->resp_addr_type = bdaddr_type;
5889                         bacpy(&conn->resp_addr, bdaddr);
5890                         if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5891                                 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5892                                 bacpy(&conn->init_addr, &hdev->rpa);
5893                         } else {
5894                                 hci_copy_identity_address(hdev,
5895                                                           &conn->init_addr,
5896                                                           &conn->init_addr_type);
5897                         }
5898                 }
5899         } else {
5900                 cancel_delayed_work(&conn->le_conn_timeout);
5901         }
5902
5903         /* The HCI_LE_Connection_Complete event is only sent once per connection.
5904          * Processing it more than once per connection can corrupt kernel memory.
5905          *
5906          * As the connection handle is set here for the first time, it indicates
5907          * whether the connection is already set up.
5908          */
5909         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5910                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
5911                 goto unlock;
5912         }
5913
5914         le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
5915
5916         /* Lookup the identity address from the stored connection
5917          * address and address type.
5918          *
5919          * When establishing connections to an identity address, the
5920          * connection procedure will store the resolvable random
5921          * address first. Now if it can be converted back into the
5922          * identity address, start using the identity address from
5923          * now on.
5924          */
5925         irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
5926         if (irk) {
5927                 bacpy(&conn->dst, &irk->bdaddr);
5928                 conn->dst_type = irk->addr_type;
5929         }
5930
5931         conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
5932
5933         if (handle > HCI_CONN_HANDLE_MAX) {
5934                 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle,
5935                            HCI_CONN_HANDLE_MAX);
5936                 status = HCI_ERROR_INVALID_PARAMETERS;
5937         }
5938
5939         /* All connection failure handling is taken care of by the
5940          * hci_conn_failed function which is triggered by the HCI
5941          * request completion callbacks used for connecting.
5942          */
5943         if (status)
5944                 goto unlock;
5945
5946         /* Drop the connection if it has been aborted */
5947         if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
5948                 hci_conn_drop(conn);
5949                 goto unlock;
5950         }
5951
5952         if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
5953                 addr_type = BDADDR_LE_PUBLIC;
5954         else
5955                 addr_type = BDADDR_LE_RANDOM;
5956
5957         /* Drop the connection if the device is blocked */
5958         if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
5959                 hci_conn_drop(conn);
5960                 goto unlock;
5961         }
5962
5963         if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5964                 mgmt_device_connected(hdev, conn, NULL, 0);
5965
5966         conn->sec_level = BT_SECURITY_LOW;
5967         conn->handle = handle;
5968         conn->state = BT_CONFIG;
5969
5970         /* Store current advertising instance as connection advertising instance
5971          * when sotfware rotation is in use so it can be re-enabled when
5972          * disconnected.
5973          */
5974         if (!ext_adv_capable(hdev))
5975                 conn->adv_instance = hdev->cur_adv_instance;
5976
5977         conn->le_conn_interval = interval;
5978         conn->le_conn_latency = latency;
5979         conn->le_supv_timeout = supervision_timeout;
5980
5981         hci_debugfs_create_conn(conn);
5982         hci_conn_add_sysfs(conn);
5983
5984         /* The remote features procedure is defined for central
5985          * role only. So only in case of an initiated connection
5986          * request the remote features.
5987          *
5988          * If the local controller supports peripheral-initiated features
5989          * exchange, then requesting the remote features in peripheral
5990          * role is possible. Otherwise just transition into the
5991          * connected state without requesting the remote features.
5992          */
5993         if (conn->out ||
5994             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
5995                 struct hci_cp_le_read_remote_features cp;
5996
5997                 cp.handle = __cpu_to_le16(conn->handle);
5998
5999                 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
6000                              sizeof(cp), &cp);
6001
6002                 hci_conn_hold(conn);
6003         } else {
6004                 conn->state = BT_CONNECTED;
6005                 hci_connect_cfm(conn, status);
6006         }
6007
6008         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
6009                                            conn->dst_type);
6010         if (params) {
6011                 hci_pend_le_list_del_init(params);
6012                 if (params->conn) {
6013                         hci_conn_drop(params->conn);
6014                         hci_conn_put(params->conn);
6015                         params->conn = NULL;
6016                 }
6017         }
6018
6019 unlock:
6020         hci_update_passive_scan(hdev);
6021         hci_dev_unlock(hdev);
6022 }
6023
6024 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
6025                                      struct sk_buff *skb)
6026 {
6027         struct hci_ev_le_conn_complete *ev = data;
6028
6029         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6030
6031         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6032                              NULL, ev->role, le16_to_cpu(ev->handle),
6033                              le16_to_cpu(ev->interval),
6034                              le16_to_cpu(ev->latency),
6035                              le16_to_cpu(ev->supervision_timeout));
6036 }
6037
6038 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
6039                                          struct sk_buff *skb)
6040 {
6041         struct hci_ev_le_enh_conn_complete *ev = data;
6042
6043         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6044
6045         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6046                              &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
6047                              le16_to_cpu(ev->interval),
6048                              le16_to_cpu(ev->latency),
6049                              le16_to_cpu(ev->supervision_timeout));
6050 }
6051
6052 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6053                                     struct sk_buff *skb)
6054 {
6055         struct hci_evt_le_ext_adv_set_term *ev = data;
6056         struct hci_conn *conn;
6057         struct adv_info *adv, *n;
6058
6059         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6060
6061         /* The Bluetooth Core 5.3 specification clearly states that this event
6062          * shall not be sent when the Host disables the advertising set. So in
6063          * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6064          *
6065          * When the Host disables an advertising set, all cleanup is done via
6066          * its command callback and not needed to be duplicated here.
6067          */
6068         if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6069                 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6070                 return;
6071         }
6072
6073         hci_dev_lock(hdev);
6074
6075         adv = hci_find_adv_instance(hdev, ev->handle);
6076
6077         if (ev->status) {
6078                 if (!adv)
6079                         goto unlock;
6080
6081                 /* Remove advertising as it has been terminated */
6082                 hci_remove_adv_instance(hdev, ev->handle);
6083                 mgmt_advertising_removed(NULL, hdev, ev->handle);
6084
6085                 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6086                         if (adv->enabled)
6087                                 goto unlock;
6088                 }
6089
6090                 /* We are no longer advertising, clear HCI_LE_ADV */
6091                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6092                 goto unlock;
6093         }
6094
6095         if (adv)
6096                 adv->enabled = false;
6097
6098         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6099         if (conn) {
6100                 /* Store handle in the connection so the correct advertising
6101                  * instance can be re-enabled when disconnected.
6102                  */
6103                 conn->adv_instance = ev->handle;
6104
6105                 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6106                     bacmp(&conn->resp_addr, BDADDR_ANY))
6107                         goto unlock;
6108
6109                 if (!ev->handle) {
6110                         bacpy(&conn->resp_addr, &hdev->random_addr);
6111                         goto unlock;
6112                 }
6113
6114                 if (adv)
6115                         bacpy(&conn->resp_addr, &adv->random_addr);
6116         }
6117
6118 unlock:
6119         hci_dev_unlock(hdev);
6120 }
6121
6122 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6123                                             struct sk_buff *skb)
6124 {
6125         struct hci_ev_le_conn_update_complete *ev = data;
6126         struct hci_conn *conn;
6127
6128         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6129
6130         if (ev->status)
6131                 return;
6132
6133         hci_dev_lock(hdev);
6134
6135         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6136         if (conn) {
6137                 conn->le_conn_interval = le16_to_cpu(ev->interval);
6138                 conn->le_conn_latency = le16_to_cpu(ev->latency);
6139                 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6140         }
6141
6142         hci_dev_unlock(hdev);
6143 }
6144
6145 /* This function requires the caller holds hdev->lock */
6146 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6147                                               bdaddr_t *addr,
6148                                               u8 addr_type, bool addr_resolved,
6149                                               u8 adv_type)
6150 {
6151         struct hci_conn *conn;
6152         struct hci_conn_params *params;
6153
6154         /* If the event is not connectable don't proceed further */
6155         if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6156                 return NULL;
6157
6158         /* Ignore if the device is blocked or hdev is suspended */
6159         if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6160             hdev->suspended)
6161                 return NULL;
6162
6163         /* Most controller will fail if we try to create new connections
6164          * while we have an existing one in peripheral role.
6165          */
6166         if (hdev->conn_hash.le_num_peripheral > 0 &&
6167             (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6168              !(hdev->le_states[3] & 0x10)))
6169                 return NULL;
6170
6171         /* If we're not connectable only connect devices that we have in
6172          * our pend_le_conns list.
6173          */
6174         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6175                                            addr_type);
6176         if (!params)
6177                 return NULL;
6178
6179         if (!params->explicit_connect) {
6180                 switch (params->auto_connect) {
6181                 case HCI_AUTO_CONN_DIRECT:
6182                         /* Only devices advertising with ADV_DIRECT_IND are
6183                          * triggering a connection attempt. This is allowing
6184                          * incoming connections from peripheral devices.
6185                          */
6186                         if (adv_type != LE_ADV_DIRECT_IND)
6187                                 return NULL;
6188                         break;
6189                 case HCI_AUTO_CONN_ALWAYS:
6190                         /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6191                          * are triggering a connection attempt. This means
6192                          * that incoming connections from peripheral device are
6193                          * accepted and also outgoing connections to peripheral
6194                          * devices are established when found.
6195                          */
6196                         break;
6197                 default:
6198                         return NULL;
6199                 }
6200         }
6201
6202         conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6203                               BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6204                               HCI_ROLE_MASTER);
6205         if (!IS_ERR(conn)) {
6206                 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6207                  * by higher layer that tried to connect, if no then
6208                  * store the pointer since we don't really have any
6209                  * other owner of the object besides the params that
6210                  * triggered it. This way we can abort the connection if
6211                  * the parameters get removed and keep the reference
6212                  * count consistent once the connection is established.
6213                  */
6214
6215                 if (!params->explicit_connect)
6216                         params->conn = hci_conn_get(conn);
6217
6218                 return conn;
6219         }
6220
6221         switch (PTR_ERR(conn)) {
6222         case -EBUSY:
6223                 /* If hci_connect() returns -EBUSY it means there is already
6224                  * an LE connection attempt going on. Since controllers don't
6225                  * support more than one connection attempt at the time, we
6226                  * don't consider this an error case.
6227                  */
6228                 break;
6229         default:
6230                 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6231                 return NULL;
6232         }
6233
6234         return NULL;
6235 }
6236
6237 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6238                                u8 bdaddr_type, bdaddr_t *direct_addr,
6239                                u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6240                                bool ext_adv, bool ctl_time, u64 instant)
6241 {
6242         struct discovery_state *d = &hdev->discovery;
6243         struct smp_irk *irk;
6244         struct hci_conn *conn;
6245         bool match, bdaddr_resolved;
6246         u32 flags;
6247         u8 *ptr;
6248
6249         switch (type) {
6250         case LE_ADV_IND:
6251         case LE_ADV_DIRECT_IND:
6252         case LE_ADV_SCAN_IND:
6253         case LE_ADV_NONCONN_IND:
6254         case LE_ADV_SCAN_RSP:
6255                 break;
6256         default:
6257                 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6258                                        "type: 0x%02x", type);
6259                 return;
6260         }
6261
6262         if (len > max_adv_len(hdev)) {
6263                 bt_dev_err_ratelimited(hdev,
6264                                        "adv larger than maximum supported");
6265                 return;
6266         }
6267
6268         /* Find the end of the data in case the report contains padded zero
6269          * bytes at the end causing an invalid length value.
6270          *
6271          * When data is NULL, len is 0 so there is no need for extra ptr
6272          * check as 'ptr < data + 0' is already false in such case.
6273          */
6274         for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6275                 if (ptr + 1 + *ptr > data + len)
6276                         break;
6277         }
6278
6279         /* Adjust for actual length. This handles the case when remote
6280          * device is advertising with incorrect data length.
6281          */
6282         len = ptr - data;
6283
6284         /* If the direct address is present, then this report is from
6285          * a LE Direct Advertising Report event. In that case it is
6286          * important to see if the address is matching the local
6287          * controller address.
6288          */
6289         if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6290                 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6291                                                   &bdaddr_resolved);
6292
6293                 /* Only resolvable random addresses are valid for these
6294                  * kind of reports and others can be ignored.
6295                  */
6296                 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6297                         return;
6298
6299                 /* If the controller is not using resolvable random
6300                  * addresses, then this report can be ignored.
6301                  */
6302                 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6303                         return;
6304
6305                 /* If the local IRK of the controller does not match
6306                  * with the resolvable random address provided, then
6307                  * this report can be ignored.
6308                  */
6309                 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6310                         return;
6311         }
6312
6313         /* Check if we need to convert to identity address */
6314         irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6315         if (irk) {
6316                 bdaddr = &irk->bdaddr;
6317                 bdaddr_type = irk->addr_type;
6318         }
6319
6320         bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6321
6322         /* Check if we have been requested to connect to this device.
6323          *
6324          * direct_addr is set only for directed advertising reports (it is NULL
6325          * for advertising reports) and is already verified to be RPA above.
6326          */
6327         conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6328                                      type);
6329         if (!ext_adv && conn && type == LE_ADV_IND &&
6330             len <= max_adv_len(hdev)) {
6331                 /* Store report for later inclusion by
6332                  * mgmt_device_connected
6333                  */
6334                 memcpy(conn->le_adv_data, data, len);
6335                 conn->le_adv_data_len = len;
6336         }
6337
6338         if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6339                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6340         else
6341                 flags = 0;
6342
6343         /* All scan results should be sent up for Mesh systems */
6344         if (hci_dev_test_flag(hdev, HCI_MESH)) {
6345                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6346                                   rssi, flags, data, len, NULL, 0, instant);
6347                 return;
6348         }
6349
6350         /* Passive scanning shouldn't trigger any device found events,
6351          * except for devices marked as CONN_REPORT for which we do send
6352          * device found events, or advertisement monitoring requested.
6353          */
6354         if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6355                 if (type == LE_ADV_DIRECT_IND)
6356                         return;
6357
6358                 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6359                                                bdaddr, bdaddr_type) &&
6360                     idr_is_empty(&hdev->adv_monitors_idr))
6361                         return;
6362
6363                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6364                                   rssi, flags, data, len, NULL, 0, 0);
6365                 return;
6366         }
6367
6368         /* When receiving a scan response, then there is no way to
6369          * know if the remote device is connectable or not. However
6370          * since scan responses are merged with a previously seen
6371          * advertising report, the flags field from that report
6372          * will be used.
6373          *
6374          * In the unlikely case that a controller just sends a scan
6375          * response event that doesn't match the pending report, then
6376          * it is marked as a standalone SCAN_RSP.
6377          */
6378         if (type == LE_ADV_SCAN_RSP)
6379                 flags = MGMT_DEV_FOUND_SCAN_RSP;
6380
6381         /* If there's nothing pending either store the data from this
6382          * event or send an immediate device found event if the data
6383          * should not be stored for later.
6384          */
6385         if (!ext_adv && !has_pending_adv_report(hdev)) {
6386                 /* If the report will trigger a SCAN_REQ store it for
6387                  * later merging.
6388                  */
6389                 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6390                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6391                                                  rssi, flags, data, len);
6392                         return;
6393                 }
6394
6395                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6396                                   rssi, flags, data, len, NULL, 0, 0);
6397                 return;
6398         }
6399
6400         /* Check if the pending report is for the same device as the new one */
6401         match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6402                  bdaddr_type == d->last_adv_addr_type);
6403
6404         /* If the pending data doesn't match this report or this isn't a
6405          * scan response (e.g. we got a duplicate ADV_IND) then force
6406          * sending of the pending data.
6407          */
6408         if (type != LE_ADV_SCAN_RSP || !match) {
6409                 /* Send out whatever is in the cache, but skip duplicates */
6410                 if (!match)
6411                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6412                                           d->last_adv_addr_type, NULL,
6413                                           d->last_adv_rssi, d->last_adv_flags,
6414                                           d->last_adv_data,
6415                                           d->last_adv_data_len, NULL, 0, 0);
6416
6417                 /* If the new report will trigger a SCAN_REQ store it for
6418                  * later merging.
6419                  */
6420                 if (!ext_adv && (type == LE_ADV_IND ||
6421                                  type == LE_ADV_SCAN_IND)) {
6422                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6423                                                  rssi, flags, data, len);
6424                         return;
6425                 }
6426
6427                 /* The advertising reports cannot be merged, so clear
6428                  * the pending report and send out a device found event.
6429                  */
6430                 clear_pending_adv_report(hdev);
6431                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6432                                   rssi, flags, data, len, NULL, 0, 0);
6433                 return;
6434         }
6435
6436         /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6437          * the new event is a SCAN_RSP. We can therefore proceed with
6438          * sending a merged device found event.
6439          */
6440         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6441                           d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6442                           d->last_adv_data, d->last_adv_data_len, data, len, 0);
6443         clear_pending_adv_report(hdev);
6444 }
6445
6446 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6447                                   struct sk_buff *skb)
6448 {
6449         struct hci_ev_le_advertising_report *ev = data;
6450         u64 instant = jiffies;
6451
6452         if (!ev->num)
6453                 return;
6454
6455         hci_dev_lock(hdev);
6456
6457         while (ev->num--) {
6458                 struct hci_ev_le_advertising_info *info;
6459                 s8 rssi;
6460
6461                 info = hci_le_ev_skb_pull(hdev, skb,
6462                                           HCI_EV_LE_ADVERTISING_REPORT,
6463                                           sizeof(*info));
6464                 if (!info)
6465                         break;
6466
6467                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6468                                         info->length + 1))
6469                         break;
6470
6471                 if (info->length <= max_adv_len(hdev)) {
6472                         rssi = info->data[info->length];
6473                         process_adv_report(hdev, info->type, &info->bdaddr,
6474                                            info->bdaddr_type, NULL, 0, rssi,
6475                                            info->data, info->length, false,
6476                                            false, instant);
6477                 } else {
6478                         bt_dev_err(hdev, "Dropping invalid advertising data");
6479                 }
6480         }
6481
6482         hci_dev_unlock(hdev);
6483 }
6484
6485 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6486 {
6487         if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6488                 switch (evt_type) {
6489                 case LE_LEGACY_ADV_IND:
6490                         return LE_ADV_IND;
6491                 case LE_LEGACY_ADV_DIRECT_IND:
6492                         return LE_ADV_DIRECT_IND;
6493                 case LE_LEGACY_ADV_SCAN_IND:
6494                         return LE_ADV_SCAN_IND;
6495                 case LE_LEGACY_NONCONN_IND:
6496                         return LE_ADV_NONCONN_IND;
6497                 case LE_LEGACY_SCAN_RSP_ADV:
6498                 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6499                         return LE_ADV_SCAN_RSP;
6500                 }
6501
6502                 goto invalid;
6503         }
6504
6505         if (evt_type & LE_EXT_ADV_CONN_IND) {
6506                 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6507                         return LE_ADV_DIRECT_IND;
6508
6509                 return LE_ADV_IND;
6510         }
6511
6512         if (evt_type & LE_EXT_ADV_SCAN_RSP)
6513                 return LE_ADV_SCAN_RSP;
6514
6515         if (evt_type & LE_EXT_ADV_SCAN_IND)
6516                 return LE_ADV_SCAN_IND;
6517
6518         if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6519             evt_type & LE_EXT_ADV_DIRECT_IND)
6520                 return LE_ADV_NONCONN_IND;
6521
6522 invalid:
6523         bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6524                                evt_type);
6525
6526         return LE_ADV_INVALID;
6527 }
6528
6529 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6530                                       struct sk_buff *skb)
6531 {
6532         struct hci_ev_le_ext_adv_report *ev = data;
6533         u64 instant = jiffies;
6534
6535         if (!ev->num)
6536                 return;
6537
6538         hci_dev_lock(hdev);
6539
6540         while (ev->num--) {
6541                 struct hci_ev_le_ext_adv_info *info;
6542                 u8 legacy_evt_type;
6543                 u16 evt_type;
6544
6545                 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6546                                           sizeof(*info));
6547                 if (!info)
6548                         break;
6549
6550                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6551                                         info->length))
6552                         break;
6553
6554                 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK;
6555                 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6556                 if (legacy_evt_type != LE_ADV_INVALID) {
6557                         process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6558                                            info->bdaddr_type, NULL, 0,
6559                                            info->rssi, info->data, info->length,
6560                                            !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6561                                            false, instant);
6562                 }
6563         }
6564
6565         hci_dev_unlock(hdev);
6566 }
6567
6568 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6569 {
6570         struct hci_cp_le_pa_term_sync cp;
6571
6572         memset(&cp, 0, sizeof(cp));
6573         cp.handle = handle;
6574
6575         return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6576 }
6577
6578 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6579                                             struct sk_buff *skb)
6580 {
6581         struct hci_ev_le_pa_sync_established *ev = data;
6582         int mask = hdev->link_mode;
6583         __u8 flags = 0;
6584
6585         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6586
6587         if (ev->status)
6588                 return;
6589
6590         hci_dev_lock(hdev);
6591
6592         hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6593
6594         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6595         if (!(mask & HCI_LM_ACCEPT))
6596                 hci_le_pa_term_sync(hdev, ev->handle);
6597
6598         hci_dev_unlock(hdev);
6599 }
6600
6601 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6602                                             struct sk_buff *skb)
6603 {
6604         struct hci_ev_le_remote_feat_complete *ev = data;
6605         struct hci_conn *conn;
6606
6607         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6608
6609         hci_dev_lock(hdev);
6610
6611         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6612         if (conn) {
6613                 if (!ev->status)
6614                         memcpy(conn->features[0], ev->features, 8);
6615
6616                 if (conn->state == BT_CONFIG) {
6617                         __u8 status;
6618
6619                         /* If the local controller supports peripheral-initiated
6620                          * features exchange, but the remote controller does
6621                          * not, then it is possible that the error code 0x1a
6622                          * for unsupported remote feature gets returned.
6623                          *
6624                          * In this specific case, allow the connection to
6625                          * transition into connected state and mark it as
6626                          * successful.
6627                          */
6628                         if (!conn->out && ev->status == 0x1a &&
6629                             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6630                                 status = 0x00;
6631                         else
6632                                 status = ev->status;
6633
6634                         conn->state = BT_CONNECTED;
6635                         hci_connect_cfm(conn, status);
6636                         hci_conn_drop(conn);
6637                 }
6638         }
6639
6640         hci_dev_unlock(hdev);
6641 }
6642
6643 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6644                                    struct sk_buff *skb)
6645 {
6646         struct hci_ev_le_ltk_req *ev = data;
6647         struct hci_cp_le_ltk_reply cp;
6648         struct hci_cp_le_ltk_neg_reply neg;
6649         struct hci_conn *conn;
6650         struct smp_ltk *ltk;
6651
6652         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6653
6654         hci_dev_lock(hdev);
6655
6656         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6657         if (conn == NULL)
6658                 goto not_found;
6659
6660         ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6661         if (!ltk)
6662                 goto not_found;
6663
6664         if (smp_ltk_is_sc(ltk)) {
6665                 /* With SC both EDiv and Rand are set to zero */
6666                 if (ev->ediv || ev->rand)
6667                         goto not_found;
6668         } else {
6669                 /* For non-SC keys check that EDiv and Rand match */
6670                 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6671                         goto not_found;
6672         }
6673
6674         memcpy(cp.ltk, ltk->val, ltk->enc_size);
6675         memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6676         cp.handle = cpu_to_le16(conn->handle);
6677
6678         conn->pending_sec_level = smp_ltk_sec_level(ltk);
6679
6680         conn->enc_key_size = ltk->enc_size;
6681
6682         hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6683
6684         /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6685          * temporary key used to encrypt a connection following
6686          * pairing. It is used during the Encrypted Session Setup to
6687          * distribute the keys. Later, security can be re-established
6688          * using a distributed LTK.
6689          */
6690         if (ltk->type == SMP_STK) {
6691                 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6692                 list_del_rcu(&ltk->list);
6693                 kfree_rcu(ltk, rcu);
6694         } else {
6695                 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6696         }
6697
6698         hci_dev_unlock(hdev);
6699
6700         return;
6701
6702 not_found:
6703         neg.handle = ev->handle;
6704         hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6705         hci_dev_unlock(hdev);
6706 }
6707
6708 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6709                                       u8 reason)
6710 {
6711         struct hci_cp_le_conn_param_req_neg_reply cp;
6712
6713         cp.handle = cpu_to_le16(handle);
6714         cp.reason = reason;
6715
6716         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6717                      &cp);
6718 }
6719
6720 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6721                                              struct sk_buff *skb)
6722 {
6723         struct hci_ev_le_remote_conn_param_req *ev = data;
6724         struct hci_cp_le_conn_param_req_reply cp;
6725         struct hci_conn *hcon;
6726         u16 handle, min, max, latency, timeout;
6727
6728         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6729
6730         handle = le16_to_cpu(ev->handle);
6731         min = le16_to_cpu(ev->interval_min);
6732         max = le16_to_cpu(ev->interval_max);
6733         latency = le16_to_cpu(ev->latency);
6734         timeout = le16_to_cpu(ev->timeout);
6735
6736         hcon = hci_conn_hash_lookup_handle(hdev, handle);
6737         if (!hcon || hcon->state != BT_CONNECTED)
6738                 return send_conn_param_neg_reply(hdev, handle,
6739                                                  HCI_ERROR_UNKNOWN_CONN_ID);
6740
6741         if (hci_check_conn_params(min, max, latency, timeout))
6742                 return send_conn_param_neg_reply(hdev, handle,
6743                                                  HCI_ERROR_INVALID_LL_PARAMS);
6744
6745         if (hcon->role == HCI_ROLE_MASTER) {
6746                 struct hci_conn_params *params;
6747                 u8 store_hint;
6748
6749                 hci_dev_lock(hdev);
6750
6751                 params = hci_conn_params_lookup(hdev, &hcon->dst,
6752                                                 hcon->dst_type);
6753                 if (params) {
6754                         params->conn_min_interval = min;
6755                         params->conn_max_interval = max;
6756                         params->conn_latency = latency;
6757                         params->supervision_timeout = timeout;
6758                         store_hint = 0x01;
6759                 } else {
6760                         store_hint = 0x00;
6761                 }
6762
6763                 hci_dev_unlock(hdev);
6764
6765                 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6766                                     store_hint, min, max, latency, timeout);
6767         }
6768
6769         cp.handle = ev->handle;
6770         cp.interval_min = ev->interval_min;
6771         cp.interval_max = ev->interval_max;
6772         cp.latency = ev->latency;
6773         cp.timeout = ev->timeout;
6774         cp.min_ce_len = 0;
6775         cp.max_ce_len = 0;
6776
6777         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6778 }
6779
6780 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6781                                          struct sk_buff *skb)
6782 {
6783         struct hci_ev_le_direct_adv_report *ev = data;
6784         u64 instant = jiffies;
6785         int i;
6786
6787         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6788                                 flex_array_size(ev, info, ev->num)))
6789                 return;
6790
6791         if (!ev->num)
6792                 return;
6793
6794         hci_dev_lock(hdev);
6795
6796         for (i = 0; i < ev->num; i++) {
6797                 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6798
6799                 process_adv_report(hdev, info->type, &info->bdaddr,
6800                                    info->bdaddr_type, &info->direct_addr,
6801                                    info->direct_addr_type, info->rssi, NULL, 0,
6802                                    false, false, instant);
6803         }
6804
6805         hci_dev_unlock(hdev);
6806 }
6807
6808 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6809                                   struct sk_buff *skb)
6810 {
6811         struct hci_ev_le_phy_update_complete *ev = data;
6812         struct hci_conn *conn;
6813
6814         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6815
6816         if (ev->status)
6817                 return;
6818
6819         hci_dev_lock(hdev);
6820
6821         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6822         if (!conn)
6823                 goto unlock;
6824
6825         conn->le_tx_phy = ev->tx_phy;
6826         conn->le_rx_phy = ev->rx_phy;
6827
6828 unlock:
6829         hci_dev_unlock(hdev);
6830 }
6831
6832 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
6833                                         struct sk_buff *skb)
6834 {
6835         struct hci_evt_le_cis_established *ev = data;
6836         struct hci_conn *conn;
6837         struct bt_iso_qos *qos;
6838         bool pending = false;
6839         u16 handle = __le16_to_cpu(ev->handle);
6840
6841         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6842
6843         hci_dev_lock(hdev);
6844
6845         conn = hci_conn_hash_lookup_handle(hdev, handle);
6846         if (!conn) {
6847                 bt_dev_err(hdev,
6848                            "Unable to find connection with handle 0x%4.4x",
6849                            handle);
6850                 goto unlock;
6851         }
6852
6853         if (conn->type != ISO_LINK) {
6854                 bt_dev_err(hdev,
6855                            "Invalid connection link type handle 0x%4.4x",
6856                            handle);
6857                 goto unlock;
6858         }
6859
6860         qos = &conn->iso_qos;
6861
6862         pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags);
6863
6864         /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */
6865         qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250;
6866         qos->ucast.out.interval = qos->ucast.in.interval;
6867
6868         switch (conn->role) {
6869         case HCI_ROLE_SLAVE:
6870                 /* Convert Transport Latency (us) to Latency (msec) */
6871                 qos->ucast.in.latency =
6872                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6873                                           1000);
6874                 qos->ucast.out.latency =
6875                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6876                                           1000);
6877                 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu);
6878                 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu);
6879                 qos->ucast.in.phy = ev->c_phy;
6880                 qos->ucast.out.phy = ev->p_phy;
6881                 break;
6882         case HCI_ROLE_MASTER:
6883                 /* Convert Transport Latency (us) to Latency (msec) */
6884                 qos->ucast.out.latency =
6885                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6886                                           1000);
6887                 qos->ucast.in.latency =
6888                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6889                                           1000);
6890                 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu);
6891                 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu);
6892                 qos->ucast.out.phy = ev->c_phy;
6893                 qos->ucast.in.phy = ev->p_phy;
6894                 break;
6895         }
6896
6897         if (!ev->status) {
6898                 conn->state = BT_CONNECTED;
6899                 hci_debugfs_create_conn(conn);
6900                 hci_conn_add_sysfs(conn);
6901                 hci_iso_setup_path(conn);
6902                 goto unlock;
6903         }
6904
6905         conn->state = BT_CLOSED;
6906         hci_connect_cfm(conn, ev->status);
6907         hci_conn_del(conn);
6908
6909 unlock:
6910         if (pending)
6911                 hci_le_create_cis_pending(hdev);
6912
6913         hci_dev_unlock(hdev);
6914 }
6915
6916 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
6917 {
6918         struct hci_cp_le_reject_cis cp;
6919
6920         memset(&cp, 0, sizeof(cp));
6921         cp.handle = handle;
6922         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
6923         hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
6924 }
6925
6926 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
6927 {
6928         struct hci_cp_le_accept_cis cp;
6929
6930         memset(&cp, 0, sizeof(cp));
6931         cp.handle = handle;
6932         hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
6933 }
6934
6935 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
6936                                struct sk_buff *skb)
6937 {
6938         struct hci_evt_le_cis_req *ev = data;
6939         u16 acl_handle, cis_handle;
6940         struct hci_conn *acl, *cis;
6941         int mask;
6942         __u8 flags = 0;
6943
6944         acl_handle = __le16_to_cpu(ev->acl_handle);
6945         cis_handle = __le16_to_cpu(ev->cis_handle);
6946
6947         bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
6948                    acl_handle, cis_handle, ev->cig_id, ev->cis_id);
6949
6950         hci_dev_lock(hdev);
6951
6952         acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
6953         if (!acl)
6954                 goto unlock;
6955
6956         mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
6957         if (!(mask & HCI_LM_ACCEPT)) {
6958                 hci_le_reject_cis(hdev, ev->cis_handle);
6959                 goto unlock;
6960         }
6961
6962         cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
6963         if (!cis) {
6964                 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE);
6965                 if (!cis) {
6966                         hci_le_reject_cis(hdev, ev->cis_handle);
6967                         goto unlock;
6968                 }
6969                 cis->handle = cis_handle;
6970         }
6971
6972         cis->iso_qos.ucast.cig = ev->cig_id;
6973         cis->iso_qos.ucast.cis = ev->cis_id;
6974
6975         if (!(flags & HCI_PROTO_DEFER)) {
6976                 hci_le_accept_cis(hdev, ev->cis_handle);
6977         } else {
6978                 cis->state = BT_CONNECT2;
6979                 hci_connect_cfm(cis, 0);
6980         }
6981
6982 unlock:
6983         hci_dev_unlock(hdev);
6984 }
6985
6986 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
6987                                            struct sk_buff *skb)
6988 {
6989         struct hci_evt_le_create_big_complete *ev = data;
6990         struct hci_conn *conn;
6991         __u8 i = 0;
6992
6993         BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
6994
6995         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
6996                                 flex_array_size(ev, bis_handle, ev->num_bis)))
6997                 return;
6998
6999         hci_dev_lock(hdev);
7000         rcu_read_lock();
7001
7002         /* Connect all BISes that are bound to the BIG */
7003         list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
7004                 if (bacmp(&conn->dst, BDADDR_ANY) ||
7005                     conn->type != ISO_LINK ||
7006                     conn->iso_qos.bcast.big != ev->handle)
7007                         continue;
7008
7009                 if (hci_conn_set_handle(conn,
7010                                         __le16_to_cpu(ev->bis_handle[i++])))
7011                         continue;
7012
7013                 if (!ev->status) {
7014                         conn->state = BT_CONNECTED;
7015                         set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
7016                         rcu_read_unlock();
7017                         hci_debugfs_create_conn(conn);
7018                         hci_conn_add_sysfs(conn);
7019                         hci_iso_setup_path(conn);
7020                         rcu_read_lock();
7021                         continue;
7022                 }
7023
7024                 hci_connect_cfm(conn, ev->status);
7025                 rcu_read_unlock();
7026                 hci_conn_del(conn);
7027                 rcu_read_lock();
7028         }
7029
7030         if (!ev->status && !i)
7031                 /* If no BISes have been connected for the BIG,
7032                  * terminate. This is in case all bound connections
7033                  * have been closed before the BIG creation
7034                  * has completed.
7035                  */
7036                 hci_le_terminate_big_sync(hdev, ev->handle,
7037                                           HCI_ERROR_LOCAL_HOST_TERM);
7038
7039         rcu_read_unlock();
7040         hci_dev_unlock(hdev);
7041 }
7042
7043 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
7044                                             struct sk_buff *skb)
7045 {
7046         struct hci_evt_le_big_sync_estabilished *ev = data;
7047         struct hci_conn *bis;
7048         int i;
7049
7050         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7051
7052         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7053                                 flex_array_size(ev, bis, ev->num_bis)))
7054                 return;
7055
7056         hci_dev_lock(hdev);
7057
7058         for (i = 0; i < ev->num_bis; i++) {
7059                 u16 handle = le16_to_cpu(ev->bis[i]);
7060                 __le32 interval;
7061
7062                 bis = hci_conn_hash_lookup_handle(hdev, handle);
7063                 if (!bis) {
7064                         bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
7065                                            HCI_ROLE_SLAVE);
7066                         if (!bis)
7067                                 continue;
7068                         bis->handle = handle;
7069                 }
7070
7071                 bis->iso_qos.bcast.big = ev->handle;
7072                 memset(&interval, 0, sizeof(interval));
7073                 memcpy(&interval, ev->latency, sizeof(ev->latency));
7074                 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval);
7075                 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7076                 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7077                 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
7078
7079                 if (!ev->status) {
7080                         set_bit(HCI_CONN_BIG_SYNC, &bis->flags);
7081                         hci_iso_setup_path(bis);
7082                 }
7083         }
7084
7085         /* In case BIG sync failed, notify each failed connection to
7086          * the user after all hci connections have been added
7087          */
7088         if (ev->status)
7089                 for (i = 0; i < ev->num_bis; i++) {
7090                         u16 handle = le16_to_cpu(ev->bis[i]);
7091
7092                         bis = hci_conn_hash_lookup_handle(hdev, handle);
7093
7094                         set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags);
7095                         hci_connect_cfm(bis, ev->status);
7096                 }
7097
7098         hci_dev_unlock(hdev);
7099 }
7100
7101 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7102                                            struct sk_buff *skb)
7103 {
7104         struct hci_evt_le_big_info_adv_report *ev = data;
7105         int mask = hdev->link_mode;
7106         __u8 flags = 0;
7107
7108         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7109
7110         hci_dev_lock(hdev);
7111
7112         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7113         if (!(mask & HCI_LM_ACCEPT))
7114                 hci_le_pa_term_sync(hdev, ev->sync_handle);
7115
7116         hci_dev_unlock(hdev);
7117 }
7118
7119 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7120 [_op] = { \
7121         .func = _func, \
7122         .min_len = _min_len, \
7123         .max_len = _max_len, \
7124 }
7125
7126 #define HCI_LE_EV(_op, _func, _len) \
7127         HCI_LE_EV_VL(_op, _func, _len, _len)
7128
7129 #define HCI_LE_EV_STATUS(_op, _func) \
7130         HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7131
7132 /* Entries in this table shall have their position according to the subevent
7133  * opcode they handle so the use of the macros above is recommend since it does
7134  * attempt to initialize at its proper index using Designated Initializers that
7135  * way events without a callback function can be ommited.
7136  */
7137 static const struct hci_le_ev {
7138         void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7139         u16  min_len;
7140         u16  max_len;
7141 } hci_le_ev_table[U8_MAX + 1] = {
7142         /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7143         HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7144                   sizeof(struct hci_ev_le_conn_complete)),
7145         /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7146         HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7147                      sizeof(struct hci_ev_le_advertising_report),
7148                      HCI_MAX_EVENT_SIZE),
7149         /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7150         HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7151                   hci_le_conn_update_complete_evt,
7152                   sizeof(struct hci_ev_le_conn_update_complete)),
7153         /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7154         HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7155                   hci_le_remote_feat_complete_evt,
7156                   sizeof(struct hci_ev_le_remote_feat_complete)),
7157         /* [0x05 = HCI_EV_LE_LTK_REQ] */
7158         HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7159                   sizeof(struct hci_ev_le_ltk_req)),
7160         /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7161         HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7162                   hci_le_remote_conn_param_req_evt,
7163                   sizeof(struct hci_ev_le_remote_conn_param_req)),
7164         /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7165         HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7166                   hci_le_enh_conn_complete_evt,
7167                   sizeof(struct hci_ev_le_enh_conn_complete)),
7168         /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7169         HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7170                      sizeof(struct hci_ev_le_direct_adv_report),
7171                      HCI_MAX_EVENT_SIZE),
7172         /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7173         HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7174                   sizeof(struct hci_ev_le_phy_update_complete)),
7175         /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7176         HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7177                      sizeof(struct hci_ev_le_ext_adv_report),
7178                      HCI_MAX_EVENT_SIZE),
7179         /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7180         HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7181                   hci_le_pa_sync_estabilished_evt,
7182                   sizeof(struct hci_ev_le_pa_sync_established)),
7183         /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7184         HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7185                   sizeof(struct hci_evt_le_ext_adv_set_term)),
7186         /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7187         HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7188                   sizeof(struct hci_evt_le_cis_established)),
7189         /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7190         HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7191                   sizeof(struct hci_evt_le_cis_req)),
7192         /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7193         HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7194                      hci_le_create_big_complete_evt,
7195                      sizeof(struct hci_evt_le_create_big_complete),
7196                      HCI_MAX_EVENT_SIZE),
7197         /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7198         HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7199                      hci_le_big_sync_established_evt,
7200                      sizeof(struct hci_evt_le_big_sync_estabilished),
7201                      HCI_MAX_EVENT_SIZE),
7202         /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7203         HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7204                      hci_le_big_info_adv_report_evt,
7205                      sizeof(struct hci_evt_le_big_info_adv_report),
7206                      HCI_MAX_EVENT_SIZE),
7207 };
7208
7209 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7210                             struct sk_buff *skb, u16 *opcode, u8 *status,
7211                             hci_req_complete_t *req_complete,
7212                             hci_req_complete_skb_t *req_complete_skb)
7213 {
7214         struct hci_ev_le_meta *ev = data;
7215         const struct hci_le_ev *subev;
7216
7217         bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7218
7219         /* Only match event if command OGF is for LE */
7220         if (hdev->sent_cmd &&
7221             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7222             hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7223                 *opcode = hci_skb_opcode(hdev->sent_cmd);
7224                 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7225                                      req_complete_skb);
7226         }
7227
7228         subev = &hci_le_ev_table[ev->subevent];
7229         if (!subev->func)
7230                 return;
7231
7232         if (skb->len < subev->min_len) {
7233                 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7234                            ev->subevent, skb->len, subev->min_len);
7235                 return;
7236         }
7237
7238         /* Just warn if the length is over max_len size it still be
7239          * possible to partially parse the event so leave to callback to
7240          * decide if that is acceptable.
7241          */
7242         if (skb->len > subev->max_len)
7243                 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7244                             ev->subevent, skb->len, subev->max_len);
7245         data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7246         if (!data)
7247                 return;
7248
7249         subev->func(hdev, data, skb);
7250 }
7251
7252 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7253                                  u8 event, struct sk_buff *skb)
7254 {
7255         struct hci_ev_cmd_complete *ev;
7256         struct hci_event_hdr *hdr;
7257
7258         if (!skb)
7259                 return false;
7260
7261         hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7262         if (!hdr)
7263                 return false;
7264
7265         if (event) {
7266                 if (hdr->evt != event)
7267                         return false;
7268                 return true;
7269         }
7270
7271         /* Check if request ended in Command Status - no way to retrieve
7272          * any extra parameters in this case.
7273          */
7274         if (hdr->evt == HCI_EV_CMD_STATUS)
7275                 return false;
7276
7277         if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7278                 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7279                            hdr->evt);
7280                 return false;
7281         }
7282
7283         ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7284         if (!ev)
7285                 return false;
7286
7287         if (opcode != __le16_to_cpu(ev->opcode)) {
7288                 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7289                        __le16_to_cpu(ev->opcode));
7290                 return false;
7291         }
7292
7293         return true;
7294 }
7295
7296 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7297                                   struct sk_buff *skb)
7298 {
7299         struct hci_ev_le_advertising_info *adv;
7300         struct hci_ev_le_direct_adv_info *direct_adv;
7301         struct hci_ev_le_ext_adv_info *ext_adv;
7302         const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7303         const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7304
7305         hci_dev_lock(hdev);
7306
7307         /* If we are currently suspended and this is the first BT event seen,
7308          * save the wake reason associated with the event.
7309          */
7310         if (!hdev->suspended || hdev->wake_reason)
7311                 goto unlock;
7312
7313         /* Default to remote wake. Values for wake_reason are documented in the
7314          * Bluez mgmt api docs.
7315          */
7316         hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7317
7318         /* Once configured for remote wakeup, we should only wake up for
7319          * reconnections. It's useful to see which device is waking us up so
7320          * keep track of the bdaddr of the connection event that woke us up.
7321          */
7322         if (event == HCI_EV_CONN_REQUEST) {
7323                 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7324                 hdev->wake_addr_type = BDADDR_BREDR;
7325         } else if (event == HCI_EV_CONN_COMPLETE) {
7326                 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7327                 hdev->wake_addr_type = BDADDR_BREDR;
7328         } else if (event == HCI_EV_LE_META) {
7329                 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7330                 u8 subevent = le_ev->subevent;
7331                 u8 *ptr = &skb->data[sizeof(*le_ev)];
7332                 u8 num_reports = *ptr;
7333
7334                 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7335                      subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7336                      subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7337                     num_reports) {
7338                         adv = (void *)(ptr + 1);
7339                         direct_adv = (void *)(ptr + 1);
7340                         ext_adv = (void *)(ptr + 1);
7341
7342                         switch (subevent) {
7343                         case HCI_EV_LE_ADVERTISING_REPORT:
7344                                 bacpy(&hdev->wake_addr, &adv->bdaddr);
7345                                 hdev->wake_addr_type = adv->bdaddr_type;
7346                                 break;
7347                         case HCI_EV_LE_DIRECT_ADV_REPORT:
7348                                 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7349                                 hdev->wake_addr_type = direct_adv->bdaddr_type;
7350                                 break;
7351                         case HCI_EV_LE_EXT_ADV_REPORT:
7352                                 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7353                                 hdev->wake_addr_type = ext_adv->bdaddr_type;
7354                                 break;
7355                         }
7356                 }
7357         } else {
7358                 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7359         }
7360
7361 unlock:
7362         hci_dev_unlock(hdev);
7363 }
7364
7365 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7366 [_op] = { \
7367         .req = false, \
7368         .func = _func, \
7369         .min_len = _min_len, \
7370         .max_len = _max_len, \
7371 }
7372
7373 #define HCI_EV(_op, _func, _len) \
7374         HCI_EV_VL(_op, _func, _len, _len)
7375
7376 #define HCI_EV_STATUS(_op, _func) \
7377         HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7378
7379 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7380 [_op] = { \
7381         .req = true, \
7382         .func_req = _func, \
7383         .min_len = _min_len, \
7384         .max_len = _max_len, \
7385 }
7386
7387 #define HCI_EV_REQ(_op, _func, _len) \
7388         HCI_EV_REQ_VL(_op, _func, _len, _len)
7389
7390 /* Entries in this table shall have their position according to the event opcode
7391  * they handle so the use of the macros above is recommend since it does attempt
7392  * to initialize at its proper index using Designated Initializers that way
7393  * events without a callback function don't have entered.
7394  */
7395 static const struct hci_ev {
7396         bool req;
7397         union {
7398                 void (*func)(struct hci_dev *hdev, void *data,
7399                              struct sk_buff *skb);
7400                 void (*func_req)(struct hci_dev *hdev, void *data,
7401                                  struct sk_buff *skb, u16 *opcode, u8 *status,
7402                                  hci_req_complete_t *req_complete,
7403                                  hci_req_complete_skb_t *req_complete_skb);
7404         };
7405         u16  min_len;
7406         u16  max_len;
7407 } hci_ev_table[U8_MAX + 1] = {
7408         /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7409         HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7410         /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7411         HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7412                   sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7413         /* [0x03 = HCI_EV_CONN_COMPLETE] */
7414         HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7415                sizeof(struct hci_ev_conn_complete)),
7416         /* [0x04 = HCI_EV_CONN_REQUEST] */
7417         HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7418                sizeof(struct hci_ev_conn_request)),
7419         /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7420         HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7421                sizeof(struct hci_ev_disconn_complete)),
7422         /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7423         HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7424                sizeof(struct hci_ev_auth_complete)),
7425         /* [0x07 = HCI_EV_REMOTE_NAME] */
7426         HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7427                sizeof(struct hci_ev_remote_name)),
7428         /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7429         HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7430                sizeof(struct hci_ev_encrypt_change)),
7431         /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7432         HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7433                hci_change_link_key_complete_evt,
7434                sizeof(struct hci_ev_change_link_key_complete)),
7435         /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7436         HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7437                sizeof(struct hci_ev_remote_features)),
7438         /* [0x0e = HCI_EV_CMD_COMPLETE] */
7439         HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7440                       sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7441         /* [0x0f = HCI_EV_CMD_STATUS] */
7442         HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7443                    sizeof(struct hci_ev_cmd_status)),
7444         /* [0x10 = HCI_EV_CMD_STATUS] */
7445         HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7446                sizeof(struct hci_ev_hardware_error)),
7447         /* [0x12 = HCI_EV_ROLE_CHANGE] */
7448         HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7449                sizeof(struct hci_ev_role_change)),
7450         /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7451         HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7452                   sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7453         /* [0x14 = HCI_EV_MODE_CHANGE] */
7454         HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7455                sizeof(struct hci_ev_mode_change)),
7456         /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7457         HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7458                sizeof(struct hci_ev_pin_code_req)),
7459         /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7460         HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7461                sizeof(struct hci_ev_link_key_req)),
7462         /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7463         HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7464                sizeof(struct hci_ev_link_key_notify)),
7465         /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7466         HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7467                sizeof(struct hci_ev_clock_offset)),
7468         /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7469         HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7470                sizeof(struct hci_ev_pkt_type_change)),
7471         /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7472         HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7473                sizeof(struct hci_ev_pscan_rep_mode)),
7474         /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7475         HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7476                   hci_inquiry_result_with_rssi_evt,
7477                   sizeof(struct hci_ev_inquiry_result_rssi),
7478                   HCI_MAX_EVENT_SIZE),
7479         /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7480         HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7481                sizeof(struct hci_ev_remote_ext_features)),
7482         /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7483         HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7484                sizeof(struct hci_ev_sync_conn_complete)),
7485         /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7486         HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7487                   hci_extended_inquiry_result_evt,
7488                   sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7489         /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7490         HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7491                sizeof(struct hci_ev_key_refresh_complete)),
7492         /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7493         HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7494                sizeof(struct hci_ev_io_capa_request)),
7495         /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7496         HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7497                sizeof(struct hci_ev_io_capa_reply)),
7498         /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7499         HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7500                sizeof(struct hci_ev_user_confirm_req)),
7501         /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7502         HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7503                sizeof(struct hci_ev_user_passkey_req)),
7504         /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7505         HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7506                sizeof(struct hci_ev_remote_oob_data_request)),
7507         /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7508         HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7509                sizeof(struct hci_ev_simple_pair_complete)),
7510         /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7511         HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7512                sizeof(struct hci_ev_user_passkey_notify)),
7513         /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7514         HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7515                sizeof(struct hci_ev_keypress_notify)),
7516         /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7517         HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7518                sizeof(struct hci_ev_remote_host_features)),
7519         /* [0x3e = HCI_EV_LE_META] */
7520         HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7521                       sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7522 #if IS_ENABLED(CONFIG_BT_HS)
7523         /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7524         HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7525                sizeof(struct hci_ev_phy_link_complete)),
7526         /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7527         HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7528                sizeof(struct hci_ev_channel_selected)),
7529         /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7530         HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7531                hci_disconn_loglink_complete_evt,
7532                sizeof(struct hci_ev_disconn_logical_link_complete)),
7533         /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7534         HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7535                sizeof(struct hci_ev_logical_link_complete)),
7536         /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7537         HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7538                hci_disconn_phylink_complete_evt,
7539                sizeof(struct hci_ev_disconn_phy_link_complete)),
7540 #endif
7541         /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7542         HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7543                sizeof(struct hci_ev_num_comp_blocks)),
7544         /* [0xff = HCI_EV_VENDOR] */
7545         HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7546 };
7547
7548 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7549                            u16 *opcode, u8 *status,
7550                            hci_req_complete_t *req_complete,
7551                            hci_req_complete_skb_t *req_complete_skb)
7552 {
7553         const struct hci_ev *ev = &hci_ev_table[event];
7554         void *data;
7555
7556         if (!ev->func)
7557                 return;
7558
7559         if (skb->len < ev->min_len) {
7560                 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7561                            event, skb->len, ev->min_len);
7562                 return;
7563         }
7564
7565         /* Just warn if the length is over max_len size it still be
7566          * possible to partially parse the event so leave to callback to
7567          * decide if that is acceptable.
7568          */
7569         if (skb->len > ev->max_len)
7570                 bt_dev_warn_ratelimited(hdev,
7571                                         "unexpected event 0x%2.2x length: %u > %u",
7572                                         event, skb->len, ev->max_len);
7573
7574         data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7575         if (!data)
7576                 return;
7577
7578         if (ev->req)
7579                 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7580                              req_complete_skb);
7581         else
7582                 ev->func(hdev, data, skb);
7583 }
7584
7585 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7586 {
7587         struct hci_event_hdr *hdr = (void *) skb->data;
7588         hci_req_complete_t req_complete = NULL;
7589         hci_req_complete_skb_t req_complete_skb = NULL;
7590         struct sk_buff *orig_skb = NULL;
7591         u8 status = 0, event, req_evt = 0;
7592         u16 opcode = HCI_OP_NOP;
7593
7594         if (skb->len < sizeof(*hdr)) {
7595                 bt_dev_err(hdev, "Malformed HCI Event");
7596                 goto done;
7597         }
7598
7599         kfree_skb(hdev->recv_event);
7600         hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7601
7602         event = hdr->evt;
7603         if (!event) {
7604                 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7605                             event);
7606                 goto done;
7607         }
7608
7609         /* Only match event if command OGF is not for LE */
7610         if (hdev->sent_cmd &&
7611             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7612             hci_skb_event(hdev->sent_cmd) == event) {
7613                 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7614                                      status, &req_complete, &req_complete_skb);
7615                 req_evt = event;
7616         }
7617
7618         /* If it looks like we might end up having to call
7619          * req_complete_skb, store a pristine copy of the skb since the
7620          * various handlers may modify the original one through
7621          * skb_pull() calls, etc.
7622          */
7623         if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7624             event == HCI_EV_CMD_COMPLETE)
7625                 orig_skb = skb_clone(skb, GFP_KERNEL);
7626
7627         skb_pull(skb, HCI_EVENT_HDR_SIZE);
7628
7629         /* Store wake reason if we're suspended */
7630         hci_store_wake_reason(hdev, event, skb);
7631
7632         bt_dev_dbg(hdev, "event 0x%2.2x", event);
7633
7634         hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7635                        &req_complete_skb);
7636
7637         if (req_complete) {
7638                 req_complete(hdev, status, opcode);
7639         } else if (req_complete_skb) {
7640                 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7641                         kfree_skb(orig_skb);
7642                         orig_skb = NULL;
7643                 }
7644                 req_complete_skb(hdev, status, opcode, orig_skb);
7645         }
7646
7647 done:
7648         kfree_skb(orig_skb);
7649         kfree_skb(skb);
7650         hdev->stat.evt_rx++;
7651 }