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