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 (!rp->status && (!cp || rp->num_handles != cp->num_cis ||
3816                             rp->cig_id != cp->cig_id)) {
3817                 bt_dev_err(hdev, "unexpected Set CIG Parameters response data");
3818                 status = HCI_ERROR_UNSPECIFIED;
3819         }
3820
3821         hci_dev_lock(hdev);
3822
3823         if (status) {
3824                 while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) {
3825                         conn->state = BT_CLOSED;
3826                         hci_connect_cfm(conn, status);
3827                         hci_conn_del(conn);
3828                 }
3829                 goto unlock;
3830         }
3831
3832         /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553
3833          *
3834          * If the Status return parameter is zero, then the Controller shall
3835          * set the Connection_Handle arrayed return parameter to the connection
3836          * handle(s) corresponding to the CIS configurations specified in
3837          * the CIS_IDs command parameter, in the same order.
3838          */
3839         for (i = 0; i < rp->num_handles; ++i) {
3840                 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id,
3841                                                 cp->cis[i].cis_id);
3842                 if (!conn || !bacmp(&conn->dst, BDADDR_ANY))
3843                         continue;
3844
3845                 if (conn->state != BT_BOUND && conn->state != BT_CONNECT)
3846                         continue;
3847
3848                 conn->handle = __le16_to_cpu(rp->handle[i]);
3849
3850                 bt_dev_dbg(hdev, "%p handle 0x%4.4x parent %p", conn,
3851                            conn->handle, conn->parent);
3852
3853                 /* Create CIS if LE is already connected */
3854                 if (conn->parent && conn->parent->state == BT_CONNECTED)
3855                         hci_le_create_cis(conn);
3856         }
3857
3858 unlock:
3859         hci_dev_unlock(hdev);
3860
3861         return rp->status;
3862 }
3863
3864 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
3865                                    struct sk_buff *skb)
3866 {
3867         struct hci_rp_le_setup_iso_path *rp = data;
3868         struct hci_cp_le_setup_iso_path *cp;
3869         struct hci_conn *conn;
3870
3871         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3872
3873         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
3874         if (!cp)
3875                 return rp->status;
3876
3877         hci_dev_lock(hdev);
3878
3879         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3880         if (!conn)
3881                 goto unlock;
3882
3883         if (rp->status) {
3884                 hci_connect_cfm(conn, rp->status);
3885                 hci_conn_del(conn);
3886                 goto unlock;
3887         }
3888
3889         switch (cp->direction) {
3890         /* Input (Host to Controller) */
3891         case 0x00:
3892                 /* Only confirm connection if output only */
3893                 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu)
3894                         hci_connect_cfm(conn, rp->status);
3895                 break;
3896         /* Output (Controller to Host) */
3897         case 0x01:
3898                 /* Confirm connection since conn->iso_qos is always configured
3899                  * last.
3900                  */
3901                 hci_connect_cfm(conn, rp->status);
3902                 break;
3903         }
3904
3905 unlock:
3906         hci_dev_unlock(hdev);
3907         return rp->status;
3908 }
3909
3910 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
3911 {
3912         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3913 }
3914
3915 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
3916                                    struct sk_buff *skb)
3917 {
3918         struct hci_ev_status *rp = data;
3919         struct hci_cp_le_set_per_adv_params *cp;
3920
3921         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3922
3923         if (rp->status)
3924                 return rp->status;
3925
3926         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
3927         if (!cp)
3928                 return rp->status;
3929
3930         /* TODO: set the conn state */
3931         return rp->status;
3932 }
3933
3934 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
3935                                        struct sk_buff *skb)
3936 {
3937         struct hci_ev_status *rp = data;
3938         __u8 *sent;
3939
3940         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
3941
3942         if (rp->status)
3943                 return rp->status;
3944
3945         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
3946         if (!sent)
3947                 return rp->status;
3948
3949         hci_dev_lock(hdev);
3950
3951         if (*sent)
3952                 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
3953         else
3954                 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
3955
3956         hci_dev_unlock(hdev);
3957
3958         return rp->status;
3959 }
3960
3961 #define HCI_CC_VL(_op, _func, _min, _max) \
3962 { \
3963         .op = _op, \
3964         .func = _func, \
3965         .min_len = _min, \
3966         .max_len = _max, \
3967 }
3968
3969 #define HCI_CC(_op, _func, _len) \
3970         HCI_CC_VL(_op, _func, _len, _len)
3971
3972 #define HCI_CC_STATUS(_op, _func) \
3973         HCI_CC(_op, _func, sizeof(struct hci_ev_status))
3974
3975 static const struct hci_cc {
3976         u16  op;
3977         u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
3978         u16  min_len;
3979         u16  max_len;
3980 } hci_cc_table[] = {
3981         HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
3982         HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
3983         HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
3984         HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
3985                       hci_cc_remote_name_req_cancel),
3986         HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
3987                sizeof(struct hci_rp_role_discovery)),
3988         HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
3989                sizeof(struct hci_rp_read_link_policy)),
3990         HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
3991                sizeof(struct hci_rp_write_link_policy)),
3992         HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
3993                sizeof(struct hci_rp_read_def_link_policy)),
3994         HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
3995                       hci_cc_write_def_link_policy),
3996         HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
3997         HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
3998                sizeof(struct hci_rp_read_stored_link_key)),
3999         HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4000                sizeof(struct hci_rp_delete_stored_link_key)),
4001         HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4002         HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4003                sizeof(struct hci_rp_read_local_name)),
4004         HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4005         HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4006         HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4007         HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4008         HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4009                sizeof(struct hci_rp_read_class_of_dev)),
4010         HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4011         HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4012                sizeof(struct hci_rp_read_voice_setting)),
4013         HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4014         HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4015                sizeof(struct hci_rp_read_num_supported_iac)),
4016         HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4017         HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4018         HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4019                sizeof(struct hci_rp_read_auth_payload_to)),
4020         HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4021                sizeof(struct hci_rp_write_auth_payload_to)),
4022         HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4023                sizeof(struct hci_rp_read_local_version)),
4024         HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4025                sizeof(struct hci_rp_read_local_commands)),
4026         HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4027                sizeof(struct hci_rp_read_local_features)),
4028         HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4029                sizeof(struct hci_rp_read_local_ext_features)),
4030         HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4031                sizeof(struct hci_rp_read_buffer_size)),
4032         HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4033                sizeof(struct hci_rp_read_bd_addr)),
4034         HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4035                sizeof(struct hci_rp_read_local_pairing_opts)),
4036         HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4037                sizeof(struct hci_rp_read_page_scan_activity)),
4038         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4039                       hci_cc_write_page_scan_activity),
4040         HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4041                sizeof(struct hci_rp_read_page_scan_type)),
4042         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4043         HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4044                sizeof(struct hci_rp_read_data_block_size)),
4045         HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4046                sizeof(struct hci_rp_read_flow_control_mode)),
4047         HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4048                sizeof(struct hci_rp_read_local_amp_info)),
4049         HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4050                sizeof(struct hci_rp_read_clock)),
4051         HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4052                sizeof(struct hci_rp_read_enc_key_size)),
4053         HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4054                sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4055         HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4056                hci_cc_read_def_err_data_reporting,
4057                sizeof(struct hci_rp_read_def_err_data_reporting)),
4058         HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4059                       hci_cc_write_def_err_data_reporting),
4060         HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4061                sizeof(struct hci_rp_pin_code_reply)),
4062         HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4063                sizeof(struct hci_rp_pin_code_neg_reply)),
4064         HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4065                sizeof(struct hci_rp_read_local_oob_data)),
4066         HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4067                sizeof(struct hci_rp_read_local_oob_ext_data)),
4068         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4069                sizeof(struct hci_rp_le_read_buffer_size)),
4070         HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4071                sizeof(struct hci_rp_le_read_local_features)),
4072         HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4073                sizeof(struct hci_rp_le_read_adv_tx_power)),
4074         HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4075                sizeof(struct hci_rp_user_confirm_reply)),
4076         HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4077                sizeof(struct hci_rp_user_confirm_reply)),
4078         HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4079                sizeof(struct hci_rp_user_confirm_reply)),
4080         HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4081                sizeof(struct hci_rp_user_confirm_reply)),
4082         HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4083         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4084         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4085         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4086         HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4087                hci_cc_le_read_accept_list_size,
4088                sizeof(struct hci_rp_le_read_accept_list_size)),
4089         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4090         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4091                       hci_cc_le_add_to_accept_list),
4092         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4093                       hci_cc_le_del_from_accept_list),
4094         HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4095                sizeof(struct hci_rp_le_read_supported_states)),
4096         HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4097                sizeof(struct hci_rp_le_read_def_data_len)),
4098         HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4099                       hci_cc_le_write_def_data_len),
4100         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4101                       hci_cc_le_add_to_resolv_list),
4102         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4103                       hci_cc_le_del_from_resolv_list),
4104         HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4105                       hci_cc_le_clear_resolv_list),
4106         HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4107                sizeof(struct hci_rp_le_read_resolv_list_size)),
4108         HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4109                       hci_cc_le_set_addr_resolution_enable),
4110         HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4111                sizeof(struct hci_rp_le_read_max_data_len)),
4112         HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4113                       hci_cc_write_le_host_supported),
4114         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4115         HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4116                sizeof(struct hci_rp_read_rssi)),
4117         HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4118                sizeof(struct hci_rp_read_tx_power)),
4119         HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4120         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4121                       hci_cc_le_set_ext_scan_param),
4122         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4123                       hci_cc_le_set_ext_scan_enable),
4124         HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4125         HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4126                hci_cc_le_read_num_adv_sets,
4127                sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4128         HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4129                sizeof(struct hci_rp_le_set_ext_adv_params)),
4130         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4131                       hci_cc_le_set_ext_adv_enable),
4132         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4133                       hci_cc_le_set_adv_set_random_addr),
4134         HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4135         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4136         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4137         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4138                       hci_cc_le_set_per_adv_enable),
4139         HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4140                sizeof(struct hci_rp_le_read_transmit_power)),
4141         HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4142         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4143                sizeof(struct hci_rp_le_read_buffer_size_v2)),
4144         HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4145                   sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4146         HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4147                sizeof(struct hci_rp_le_setup_iso_path)),
4148 };
4149
4150 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4151                       struct sk_buff *skb)
4152 {
4153         void *data;
4154
4155         if (skb->len < cc->min_len) {
4156                 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4157                            cc->op, skb->len, cc->min_len);
4158                 return HCI_ERROR_UNSPECIFIED;
4159         }
4160
4161         /* Just warn if the length is over max_len size it still be possible to
4162          * partially parse the cc so leave to callback to decide if that is
4163          * acceptable.
4164          */
4165         if (skb->len > cc->max_len)
4166                 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4167                             cc->op, skb->len, cc->max_len);
4168
4169         data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4170         if (!data)
4171                 return HCI_ERROR_UNSPECIFIED;
4172
4173         return cc->func(hdev, data, skb);
4174 }
4175
4176 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4177                                  struct sk_buff *skb, u16 *opcode, u8 *status,
4178                                  hci_req_complete_t *req_complete,
4179                                  hci_req_complete_skb_t *req_complete_skb)
4180 {
4181         struct hci_ev_cmd_complete *ev = data;
4182         int i;
4183
4184         *opcode = __le16_to_cpu(ev->opcode);
4185
4186         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4187
4188         for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4189                 if (hci_cc_table[i].op == *opcode) {
4190                         *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4191                         break;
4192                 }
4193         }
4194
4195         if (i == ARRAY_SIZE(hci_cc_table)) {
4196                 /* Unknown opcode, assume byte 0 contains the status, so
4197                  * that e.g. __hci_cmd_sync() properly returns errors
4198                  * for vendor specific commands send by HCI drivers.
4199                  * If a vendor doesn't actually follow this convention we may
4200                  * need to introduce a vendor CC table in order to properly set
4201                  * the status.
4202                  */
4203                 *status = skb->data[0];
4204         }
4205
4206         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4207
4208         hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4209                              req_complete_skb);
4210
4211         if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4212                 bt_dev_err(hdev,
4213                            "unexpected event for opcode 0x%4.4x", *opcode);
4214                 return;
4215         }
4216
4217         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4218                 queue_work(hdev->workqueue, &hdev->cmd_work);
4219 }
4220
4221 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4222 {
4223         struct hci_cp_le_create_cis *cp;
4224         int i;
4225
4226         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4227
4228         if (!status)
4229                 return;
4230
4231         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4232         if (!cp)
4233                 return;
4234
4235         hci_dev_lock(hdev);
4236
4237         /* Remove connection if command failed */
4238         for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4239                 struct hci_conn *conn;
4240                 u16 handle;
4241
4242                 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4243
4244                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4245                 if (conn) {
4246                         conn->state = BT_CLOSED;
4247                         hci_connect_cfm(conn, status);
4248                         hci_conn_del(conn);
4249                 }
4250         }
4251
4252         hci_dev_unlock(hdev);
4253 }
4254
4255 #define HCI_CS(_op, _func) \
4256 { \
4257         .op = _op, \
4258         .func = _func, \
4259 }
4260
4261 static const struct hci_cs {
4262         u16  op;
4263         void (*func)(struct hci_dev *hdev, __u8 status);
4264 } hci_cs_table[] = {
4265         HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4266         HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4267         HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4268         HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4269         HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4270         HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4271         HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4272         HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4273         HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4274                hci_cs_read_remote_ext_features),
4275         HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4276         HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4277                hci_cs_enhanced_setup_sync_conn),
4278         HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4279         HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4280         HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4281         HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4282         HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4283         HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4284         HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4285         HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4286         HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4287 };
4288
4289 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4290                                struct sk_buff *skb, u16 *opcode, u8 *status,
4291                                hci_req_complete_t *req_complete,
4292                                hci_req_complete_skb_t *req_complete_skb)
4293 {
4294         struct hci_ev_cmd_status *ev = data;
4295         int i;
4296
4297         *opcode = __le16_to_cpu(ev->opcode);
4298         *status = ev->status;
4299
4300         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4301
4302         for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4303                 if (hci_cs_table[i].op == *opcode) {
4304                         hci_cs_table[i].func(hdev, ev->status);
4305                         break;
4306                 }
4307         }
4308
4309         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4310
4311         /* Indicate request completion if the command failed. Also, if
4312          * we're not waiting for a special event and we get a success
4313          * command status we should try to flag the request as completed
4314          * (since for this kind of commands there will not be a command
4315          * complete event).
4316          */
4317         if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4318                 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4319                                      req_complete_skb);
4320                 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4321                         bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4322                                    *opcode);
4323                         return;
4324                 }
4325         }
4326
4327         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4328                 queue_work(hdev->workqueue, &hdev->cmd_work);
4329 }
4330
4331 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4332                                    struct sk_buff *skb)
4333 {
4334         struct hci_ev_hardware_error *ev = data;
4335
4336         bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4337
4338         hdev->hw_error_code = ev->code;
4339
4340         queue_work(hdev->req_workqueue, &hdev->error_reset);
4341 }
4342
4343 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4344                                 struct sk_buff *skb)
4345 {
4346         struct hci_ev_role_change *ev = data;
4347         struct hci_conn *conn;
4348
4349         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4350
4351         hci_dev_lock(hdev);
4352
4353         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4354         if (conn) {
4355                 if (!ev->status)
4356                         conn->role = ev->role;
4357
4358                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4359
4360                 hci_role_switch_cfm(conn, ev->status, ev->role);
4361         }
4362
4363         hci_dev_unlock(hdev);
4364 }
4365
4366 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4367                                   struct sk_buff *skb)
4368 {
4369         struct hci_ev_num_comp_pkts *ev = data;
4370         int i;
4371
4372         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4373                              flex_array_size(ev, handles, ev->num)))
4374                 return;
4375
4376         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4377                 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4378                 return;
4379         }
4380
4381         bt_dev_dbg(hdev, "num %d", ev->num);
4382
4383         for (i = 0; i < ev->num; i++) {
4384                 struct hci_comp_pkts_info *info = &ev->handles[i];
4385                 struct hci_conn *conn;
4386                 __u16  handle, count;
4387
4388                 handle = __le16_to_cpu(info->handle);
4389                 count  = __le16_to_cpu(info->count);
4390
4391                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4392                 if (!conn)
4393                         continue;
4394
4395                 conn->sent -= count;
4396
4397                 switch (conn->type) {
4398                 case ACL_LINK:
4399                         hdev->acl_cnt += count;
4400                         if (hdev->acl_cnt > hdev->acl_pkts)
4401                                 hdev->acl_cnt = hdev->acl_pkts;
4402                         break;
4403
4404                 case LE_LINK:
4405                         if (hdev->le_pkts) {
4406                                 hdev->le_cnt += count;
4407                                 if (hdev->le_cnt > hdev->le_pkts)
4408                                         hdev->le_cnt = hdev->le_pkts;
4409                         } else {
4410                                 hdev->acl_cnt += count;
4411                                 if (hdev->acl_cnt > hdev->acl_pkts)
4412                                         hdev->acl_cnt = hdev->acl_pkts;
4413                         }
4414                         break;
4415
4416                 case SCO_LINK:
4417                         hdev->sco_cnt += count;
4418                         if (hdev->sco_cnt > hdev->sco_pkts)
4419                                 hdev->sco_cnt = hdev->sco_pkts;
4420                         break;
4421
4422                 case ISO_LINK:
4423                         if (hdev->iso_pkts) {
4424                                 hdev->iso_cnt += count;
4425                                 if (hdev->iso_cnt > hdev->iso_pkts)
4426                                         hdev->iso_cnt = hdev->iso_pkts;
4427                         } else if (hdev->le_pkts) {
4428                                 hdev->le_cnt += count;
4429                                 if (hdev->le_cnt > hdev->le_pkts)
4430                                         hdev->le_cnt = hdev->le_pkts;
4431                         } else {
4432                                 hdev->acl_cnt += count;
4433                                 if (hdev->acl_cnt > hdev->acl_pkts)
4434                                         hdev->acl_cnt = hdev->acl_pkts;
4435                         }
4436                         break;
4437
4438                 default:
4439                         bt_dev_err(hdev, "unknown type %d conn %p",
4440                                    conn->type, conn);
4441                         break;
4442                 }
4443         }
4444
4445         queue_work(hdev->workqueue, &hdev->tx_work);
4446 }
4447
4448 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4449                                                  __u16 handle)
4450 {
4451         struct hci_chan *chan;
4452
4453         switch (hdev->dev_type) {
4454         case HCI_PRIMARY:
4455                 return hci_conn_hash_lookup_handle(hdev, handle);
4456         case HCI_AMP:
4457                 chan = hci_chan_lookup_handle(hdev, handle);
4458                 if (chan)
4459                         return chan->conn;
4460                 break;
4461         default:
4462                 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4463                 break;
4464         }
4465
4466         return NULL;
4467 }
4468
4469 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4470                                     struct sk_buff *skb)
4471 {
4472         struct hci_ev_num_comp_blocks *ev = data;
4473         int i;
4474
4475         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4476                              flex_array_size(ev, handles, ev->num_hndl)))
4477                 return;
4478
4479         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4480                 bt_dev_err(hdev, "wrong event for mode %d",
4481                            hdev->flow_ctl_mode);
4482                 return;
4483         }
4484
4485         bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4486                    ev->num_hndl);
4487
4488         for (i = 0; i < ev->num_hndl; i++) {
4489                 struct hci_comp_blocks_info *info = &ev->handles[i];
4490                 struct hci_conn *conn = NULL;
4491                 __u16  handle, block_count;
4492
4493                 handle = __le16_to_cpu(info->handle);
4494                 block_count = __le16_to_cpu(info->blocks);
4495
4496                 conn = __hci_conn_lookup_handle(hdev, handle);
4497                 if (!conn)
4498                         continue;
4499
4500                 conn->sent -= block_count;
4501
4502                 switch (conn->type) {
4503                 case ACL_LINK:
4504                 case AMP_LINK:
4505                         hdev->block_cnt += block_count;
4506                         if (hdev->block_cnt > hdev->num_blocks)
4507                                 hdev->block_cnt = hdev->num_blocks;
4508                         break;
4509
4510                 default:
4511                         bt_dev_err(hdev, "unknown type %d conn %p",
4512                                    conn->type, conn);
4513                         break;
4514                 }
4515         }
4516
4517         queue_work(hdev->workqueue, &hdev->tx_work);
4518 }
4519
4520 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4521                                 struct sk_buff *skb)
4522 {
4523         struct hci_ev_mode_change *ev = data;
4524         struct hci_conn *conn;
4525
4526         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4527
4528         hci_dev_lock(hdev);
4529
4530         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4531         if (conn) {
4532                 conn->mode = ev->mode;
4533
4534                 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4535                                         &conn->flags)) {
4536                         if (conn->mode == HCI_CM_ACTIVE)
4537                                 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4538                         else
4539                                 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4540                 }
4541
4542                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4543                         hci_sco_setup(conn, ev->status);
4544         }
4545
4546         hci_dev_unlock(hdev);
4547 }
4548
4549 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4550                                      struct sk_buff *skb)
4551 {
4552         struct hci_ev_pin_code_req *ev = data;
4553         struct hci_conn *conn;
4554
4555         bt_dev_dbg(hdev, "");
4556
4557         hci_dev_lock(hdev);
4558
4559         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4560         if (!conn)
4561                 goto unlock;
4562
4563         if (conn->state == BT_CONNECTED) {
4564                 hci_conn_hold(conn);
4565                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4566                 hci_conn_drop(conn);
4567         }
4568
4569         if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4570             !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4571                 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4572                              sizeof(ev->bdaddr), &ev->bdaddr);
4573         } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4574                 u8 secure;
4575
4576                 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4577                         secure = 1;
4578                 else
4579                         secure = 0;
4580
4581                 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4582         }
4583
4584 unlock:
4585         hci_dev_unlock(hdev);
4586 }
4587
4588 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4589 {
4590         if (key_type == HCI_LK_CHANGED_COMBINATION)
4591                 return;
4592
4593         conn->pin_length = pin_len;
4594         conn->key_type = key_type;
4595
4596         switch (key_type) {
4597         case HCI_LK_LOCAL_UNIT:
4598         case HCI_LK_REMOTE_UNIT:
4599         case HCI_LK_DEBUG_COMBINATION:
4600                 return;
4601         case HCI_LK_COMBINATION:
4602                 if (pin_len == 16)
4603                         conn->pending_sec_level = BT_SECURITY_HIGH;
4604                 else
4605                         conn->pending_sec_level = BT_SECURITY_MEDIUM;
4606                 break;
4607         case HCI_LK_UNAUTH_COMBINATION_P192:
4608         case HCI_LK_UNAUTH_COMBINATION_P256:
4609                 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4610                 break;
4611         case HCI_LK_AUTH_COMBINATION_P192:
4612                 conn->pending_sec_level = BT_SECURITY_HIGH;
4613                 break;
4614         case HCI_LK_AUTH_COMBINATION_P256:
4615                 conn->pending_sec_level = BT_SECURITY_FIPS;
4616                 break;
4617         }
4618 }
4619
4620 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4621                                      struct sk_buff *skb)
4622 {
4623         struct hci_ev_link_key_req *ev = data;
4624         struct hci_cp_link_key_reply cp;
4625         struct hci_conn *conn;
4626         struct link_key *key;
4627
4628         bt_dev_dbg(hdev, "");
4629
4630         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4631                 return;
4632
4633         hci_dev_lock(hdev);
4634
4635         key = hci_find_link_key(hdev, &ev->bdaddr);
4636         if (!key) {
4637                 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4638                 goto not_found;
4639         }
4640
4641         bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4642
4643         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4644         if (conn) {
4645                 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4646
4647                 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4648                      key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4649                     conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4650                         bt_dev_dbg(hdev, "ignoring unauthenticated key");
4651                         goto not_found;
4652                 }
4653
4654                 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4655                     (conn->pending_sec_level == BT_SECURITY_HIGH ||
4656                      conn->pending_sec_level == BT_SECURITY_FIPS)) {
4657                         bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4658                         goto not_found;
4659                 }
4660
4661                 conn_set_key(conn, key->type, key->pin_len);
4662         }
4663
4664         bacpy(&cp.bdaddr, &ev->bdaddr);
4665         memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4666
4667         hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4668
4669         hci_dev_unlock(hdev);
4670
4671         return;
4672
4673 not_found:
4674         hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4675         hci_dev_unlock(hdev);
4676 }
4677
4678 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4679                                     struct sk_buff *skb)
4680 {
4681         struct hci_ev_link_key_notify *ev = data;
4682         struct hci_conn *conn;
4683         struct link_key *key;
4684         bool persistent;
4685         u8 pin_len = 0;
4686
4687         bt_dev_dbg(hdev, "");
4688
4689         hci_dev_lock(hdev);
4690
4691         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4692         if (!conn)
4693                 goto unlock;
4694
4695         hci_conn_hold(conn);
4696         conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4697         hci_conn_drop(conn);
4698
4699         set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4700         conn_set_key(conn, ev->key_type, conn->pin_length);
4701
4702         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4703                 goto unlock;
4704
4705         key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
4706                                 ev->key_type, pin_len, &persistent);
4707         if (!key)
4708                 goto unlock;
4709
4710         /* Update connection information since adding the key will have
4711          * fixed up the type in the case of changed combination keys.
4712          */
4713         if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
4714                 conn_set_key(conn, key->type, key->pin_len);
4715
4716         mgmt_new_link_key(hdev, key, persistent);
4717
4718         /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
4719          * is set. If it's not set simply remove the key from the kernel
4720          * list (we've still notified user space about it but with
4721          * store_hint being 0).
4722          */
4723         if (key->type == HCI_LK_DEBUG_COMBINATION &&
4724             !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
4725                 list_del_rcu(&key->list);
4726                 kfree_rcu(key, rcu);
4727                 goto unlock;
4728         }
4729
4730         if (persistent)
4731                 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4732         else
4733                 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
4734
4735 unlock:
4736         hci_dev_unlock(hdev);
4737 }
4738
4739 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
4740                                  struct sk_buff *skb)
4741 {
4742         struct hci_ev_clock_offset *ev = data;
4743         struct hci_conn *conn;
4744
4745         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4746
4747         hci_dev_lock(hdev);
4748
4749         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4750         if (conn && !ev->status) {
4751                 struct inquiry_entry *ie;
4752
4753                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4754                 if (ie) {
4755                         ie->data.clock_offset = ev->clock_offset;
4756                         ie->timestamp = jiffies;
4757                 }
4758         }
4759
4760         hci_dev_unlock(hdev);
4761 }
4762
4763 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
4764                                     struct sk_buff *skb)
4765 {
4766         struct hci_ev_pkt_type_change *ev = data;
4767         struct hci_conn *conn;
4768
4769         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4770
4771         hci_dev_lock(hdev);
4772
4773         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4774         if (conn && !ev->status)
4775                 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
4776
4777         hci_dev_unlock(hdev);
4778 }
4779
4780 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
4781                                    struct sk_buff *skb)
4782 {
4783         struct hci_ev_pscan_rep_mode *ev = data;
4784         struct inquiry_entry *ie;
4785
4786         bt_dev_dbg(hdev, "");
4787
4788         hci_dev_lock(hdev);
4789
4790         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
4791         if (ie) {
4792                 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
4793                 ie->timestamp = jiffies;
4794         }
4795
4796         hci_dev_unlock(hdev);
4797 }
4798
4799 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
4800                                              struct sk_buff *skb)
4801 {
4802         struct hci_ev_inquiry_result_rssi *ev = edata;
4803         struct inquiry_data data;
4804         int i;
4805
4806         bt_dev_dbg(hdev, "num_rsp %d", ev->num);
4807
4808         if (!ev->num)
4809                 return;
4810
4811         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
4812                 return;
4813
4814         hci_dev_lock(hdev);
4815
4816         if (skb->len == array_size(ev->num,
4817                                    sizeof(struct inquiry_info_rssi_pscan))) {
4818                 struct inquiry_info_rssi_pscan *info;
4819
4820                 for (i = 0; i < ev->num; i++) {
4821                         u32 flags;
4822
4823                         info = hci_ev_skb_pull(hdev, skb,
4824                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4825                                                sizeof(*info));
4826                         if (!info) {
4827                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4828                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4829                                 goto unlock;
4830                         }
4831
4832                         bacpy(&data.bdaddr, &info->bdaddr);
4833                         data.pscan_rep_mode     = info->pscan_rep_mode;
4834                         data.pscan_period_mode  = info->pscan_period_mode;
4835                         data.pscan_mode         = info->pscan_mode;
4836                         memcpy(data.dev_class, info->dev_class, 3);
4837                         data.clock_offset       = info->clock_offset;
4838                         data.rssi               = info->rssi;
4839                         data.ssp_mode           = 0x00;
4840
4841                         flags = hci_inquiry_cache_update(hdev, &data, false);
4842
4843                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4844                                           info->dev_class, info->rssi,
4845                                           flags, NULL, 0, NULL, 0, 0);
4846                 }
4847         } else if (skb->len == array_size(ev->num,
4848                                           sizeof(struct inquiry_info_rssi))) {
4849                 struct inquiry_info_rssi *info;
4850
4851                 for (i = 0; i < ev->num; i++) {
4852                         u32 flags;
4853
4854                         info = hci_ev_skb_pull(hdev, skb,
4855                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
4856                                                sizeof(*info));
4857                         if (!info) {
4858                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4859                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4860                                 goto unlock;
4861                         }
4862
4863                         bacpy(&data.bdaddr, &info->bdaddr);
4864                         data.pscan_rep_mode     = info->pscan_rep_mode;
4865                         data.pscan_period_mode  = info->pscan_period_mode;
4866                         data.pscan_mode         = 0x00;
4867                         memcpy(data.dev_class, info->dev_class, 3);
4868                         data.clock_offset       = info->clock_offset;
4869                         data.rssi               = info->rssi;
4870                         data.ssp_mode           = 0x00;
4871
4872                         flags = hci_inquiry_cache_update(hdev, &data, false);
4873
4874                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
4875                                           info->dev_class, info->rssi,
4876                                           flags, NULL, 0, NULL, 0, 0);
4877                 }
4878         } else {
4879                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
4880                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
4881         }
4882 unlock:
4883         hci_dev_unlock(hdev);
4884 }
4885
4886 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
4887                                         struct sk_buff *skb)
4888 {
4889         struct hci_ev_remote_ext_features *ev = data;
4890         struct hci_conn *conn;
4891
4892         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4893
4894         hci_dev_lock(hdev);
4895
4896         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4897         if (!conn)
4898                 goto unlock;
4899
4900         if (ev->page < HCI_MAX_PAGES)
4901                 memcpy(conn->features[ev->page], ev->features, 8);
4902
4903         if (!ev->status && ev->page == 0x01) {
4904                 struct inquiry_entry *ie;
4905
4906                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
4907                 if (ie)
4908                         ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4909
4910                 if (ev->features[0] & LMP_HOST_SSP) {
4911                         set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4912                 } else {
4913                         /* It is mandatory by the Bluetooth specification that
4914                          * Extended Inquiry Results are only used when Secure
4915                          * Simple Pairing is enabled, but some devices violate
4916                          * this.
4917                          *
4918                          * To make these devices work, the internal SSP
4919                          * enabled flag needs to be cleared if the remote host
4920                          * features do not indicate SSP support */
4921                         clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
4922                 }
4923
4924                 if (ev->features[0] & LMP_HOST_SC)
4925                         set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
4926         }
4927
4928         if (conn->state != BT_CONFIG)
4929                 goto unlock;
4930
4931         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
4932                 struct hci_cp_remote_name_req cp;
4933                 memset(&cp, 0, sizeof(cp));
4934                 bacpy(&cp.bdaddr, &conn->dst);
4935                 cp.pscan_rep_mode = 0x02;
4936                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
4937         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4938                 mgmt_device_connected(hdev, conn, NULL, 0);
4939
4940         if (!hci_outgoing_auth_needed(hdev, conn)) {
4941                 conn->state = BT_CONNECTED;
4942                 hci_connect_cfm(conn, ev->status);
4943                 hci_conn_drop(conn);
4944         }
4945
4946 unlock:
4947         hci_dev_unlock(hdev);
4948 }
4949
4950 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
4951                                        struct sk_buff *skb)
4952 {
4953         struct hci_ev_sync_conn_complete *ev = data;
4954         struct hci_conn *conn;
4955         u8 status = ev->status;
4956
4957         switch (ev->link_type) {
4958         case SCO_LINK:
4959         case ESCO_LINK:
4960                 break;
4961         default:
4962                 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
4963                  * for HCI_Synchronous_Connection_Complete is limited to
4964                  * either SCO or eSCO
4965                  */
4966                 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
4967                 return;
4968         }
4969
4970         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4971
4972         hci_dev_lock(hdev);
4973
4974         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
4975         if (!conn) {
4976                 if (ev->link_type == ESCO_LINK)
4977                         goto unlock;
4978
4979                 /* When the link type in the event indicates SCO connection
4980                  * and lookup of the connection object fails, then check
4981                  * if an eSCO connection object exists.
4982                  *
4983                  * The core limits the synchronous connections to either
4984                  * SCO or eSCO. The eSCO connection is preferred and tried
4985                  * to be setup first and until successfully established,
4986                  * the link type will be hinted as eSCO.
4987                  */
4988                 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
4989                 if (!conn)
4990                         goto unlock;
4991         }
4992
4993         /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
4994          * Processing it more than once per connection can corrupt kernel memory.
4995          *
4996          * As the connection handle is set here for the first time, it indicates
4997          * whether the connection is already set up.
4998          */
4999         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
5000                 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5001                 goto unlock;
5002         }
5003
5004         switch (status) {
5005         case 0x00:
5006                 conn->handle = __le16_to_cpu(ev->handle);
5007                 if (conn->handle > HCI_CONN_HANDLE_MAX) {
5008                         bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
5009                                    conn->handle, HCI_CONN_HANDLE_MAX);
5010                         status = HCI_ERROR_INVALID_PARAMETERS;
5011                         conn->state = BT_CLOSED;
5012                         break;
5013                 }
5014
5015                 conn->state  = BT_CONNECTED;
5016                 conn->type   = ev->link_type;
5017
5018                 hci_debugfs_create_conn(conn);
5019                 hci_conn_add_sysfs(conn);
5020                 break;
5021
5022         case 0x10:      /* Connection Accept Timeout */
5023         case 0x0d:      /* Connection Rejected due to Limited Resources */
5024         case 0x11:      /* Unsupported Feature or Parameter Value */
5025         case 0x1c:      /* SCO interval rejected */
5026         case 0x1a:      /* Unsupported Remote Feature */
5027         case 0x1e:      /* Invalid LMP Parameters */
5028         case 0x1f:      /* Unspecified error */
5029         case 0x20:      /* Unsupported LMP Parameter value */
5030                 if (conn->out) {
5031                         conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5032                                         (hdev->esco_type & EDR_ESCO_MASK);
5033                         if (hci_setup_sync(conn, conn->parent->handle))
5034                                 goto unlock;
5035                 }
5036                 fallthrough;
5037
5038         default:
5039                 conn->state = BT_CLOSED;
5040                 break;
5041         }
5042
5043         bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5044         /* Notify only in case of SCO over HCI transport data path which
5045          * is zero and non-zero value shall be non-HCI transport data path
5046          */
5047         if (conn->codec.data_path == 0 && hdev->notify) {
5048                 switch (ev->air_mode) {
5049                 case 0x02:
5050                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5051                         break;
5052                 case 0x03:
5053                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5054                         break;
5055                 }
5056         }
5057
5058         hci_connect_cfm(conn, status);
5059         if (status)
5060                 hci_conn_del(conn);
5061
5062 unlock:
5063         hci_dev_unlock(hdev);
5064 }
5065
5066 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5067 {
5068         size_t parsed = 0;
5069
5070         while (parsed < eir_len) {
5071                 u8 field_len = eir[0];
5072
5073                 if (field_len == 0)
5074                         return parsed;
5075
5076                 parsed += field_len + 1;
5077                 eir += field_len + 1;
5078         }
5079
5080         return eir_len;
5081 }
5082
5083 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5084                                             struct sk_buff *skb)
5085 {
5086         struct hci_ev_ext_inquiry_result *ev = edata;
5087         struct inquiry_data data;
5088         size_t eir_len;
5089         int i;
5090
5091         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5092                              flex_array_size(ev, info, ev->num)))
5093                 return;
5094
5095         bt_dev_dbg(hdev, "num %d", ev->num);
5096
5097         if (!ev->num)
5098                 return;
5099
5100         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5101                 return;
5102
5103         hci_dev_lock(hdev);
5104
5105         for (i = 0; i < ev->num; i++) {
5106                 struct extended_inquiry_info *info = &ev->info[i];
5107                 u32 flags;
5108                 bool name_known;
5109
5110                 bacpy(&data.bdaddr, &info->bdaddr);
5111                 data.pscan_rep_mode     = info->pscan_rep_mode;
5112                 data.pscan_period_mode  = info->pscan_period_mode;
5113                 data.pscan_mode         = 0x00;
5114                 memcpy(data.dev_class, info->dev_class, 3);
5115                 data.clock_offset       = info->clock_offset;
5116                 data.rssi               = info->rssi;
5117                 data.ssp_mode           = 0x01;
5118
5119                 if (hci_dev_test_flag(hdev, HCI_MGMT))
5120                         name_known = eir_get_data(info->data,
5121                                                   sizeof(info->data),
5122                                                   EIR_NAME_COMPLETE, NULL);
5123                 else
5124                         name_known = true;
5125
5126                 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5127
5128                 eir_len = eir_get_length(info->data, sizeof(info->data));
5129
5130                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5131                                   info->dev_class, info->rssi,
5132                                   flags, info->data, eir_len, NULL, 0, 0);
5133         }
5134
5135         hci_dev_unlock(hdev);
5136 }
5137
5138 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5139                                          struct sk_buff *skb)
5140 {
5141         struct hci_ev_key_refresh_complete *ev = data;
5142         struct hci_conn *conn;
5143
5144         bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5145                    __le16_to_cpu(ev->handle));
5146
5147         hci_dev_lock(hdev);
5148
5149         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5150         if (!conn)
5151                 goto unlock;
5152
5153         /* For BR/EDR the necessary steps are taken through the
5154          * auth_complete event.
5155          */
5156         if (conn->type != LE_LINK)
5157                 goto unlock;
5158
5159         if (!ev->status)
5160                 conn->sec_level = conn->pending_sec_level;
5161
5162         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5163
5164         if (ev->status && conn->state == BT_CONNECTED) {
5165                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5166                 hci_conn_drop(conn);
5167                 goto unlock;
5168         }
5169
5170         if (conn->state == BT_CONFIG) {
5171                 if (!ev->status)
5172                         conn->state = BT_CONNECTED;
5173
5174                 hci_connect_cfm(conn, ev->status);
5175                 hci_conn_drop(conn);
5176         } else {
5177                 hci_auth_cfm(conn, ev->status);
5178
5179                 hci_conn_hold(conn);
5180                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5181                 hci_conn_drop(conn);
5182         }
5183
5184 unlock:
5185         hci_dev_unlock(hdev);
5186 }
5187
5188 static u8 hci_get_auth_req(struct hci_conn *conn)
5189 {
5190         /* If remote requests no-bonding follow that lead */
5191         if (conn->remote_auth == HCI_AT_NO_BONDING ||
5192             conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5193                 return conn->remote_auth | (conn->auth_type & 0x01);
5194
5195         /* If both remote and local have enough IO capabilities, require
5196          * MITM protection
5197          */
5198         if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5199             conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5200                 return conn->remote_auth | 0x01;
5201
5202         /* No MITM protection possible so ignore remote requirement */
5203         return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5204 }
5205
5206 static u8 bredr_oob_data_present(struct hci_conn *conn)
5207 {
5208         struct hci_dev *hdev = conn->hdev;
5209         struct oob_data *data;
5210
5211         data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5212         if (!data)
5213                 return 0x00;
5214
5215         if (bredr_sc_enabled(hdev)) {
5216                 /* When Secure Connections is enabled, then just
5217                  * return the present value stored with the OOB
5218                  * data. The stored value contains the right present
5219                  * information. However it can only be trusted when
5220                  * not in Secure Connection Only mode.
5221                  */
5222                 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5223                         return data->present;
5224
5225                 /* When Secure Connections Only mode is enabled, then
5226                  * the P-256 values are required. If they are not
5227                  * available, then do not declare that OOB data is
5228                  * present.
5229                  */
5230                 if (!memcmp(data->rand256, ZERO_KEY, 16) ||
5231                     !memcmp(data->hash256, ZERO_KEY, 16))
5232                         return 0x00;
5233
5234                 return 0x02;
5235         }
5236
5237         /* When Secure Connections is not enabled or actually
5238          * not supported by the hardware, then check that if
5239          * P-192 data values are present.
5240          */
5241         if (!memcmp(data->rand192, ZERO_KEY, 16) ||
5242             !memcmp(data->hash192, ZERO_KEY, 16))
5243                 return 0x00;
5244
5245         return 0x01;
5246 }
5247
5248 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5249                                     struct sk_buff *skb)
5250 {
5251         struct hci_ev_io_capa_request *ev = data;
5252         struct hci_conn *conn;
5253
5254         bt_dev_dbg(hdev, "");
5255
5256         hci_dev_lock(hdev);
5257
5258         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5259         if (!conn)
5260                 goto unlock;
5261
5262         hci_conn_hold(conn);
5263
5264         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5265                 goto unlock;
5266
5267         /* Allow pairing if we're pairable, the initiators of the
5268          * pairing or if the remote is not requesting bonding.
5269          */
5270         if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5271             test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5272             (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5273                 struct hci_cp_io_capability_reply cp;
5274
5275                 bacpy(&cp.bdaddr, &ev->bdaddr);
5276                 /* Change the IO capability from KeyboardDisplay
5277                  * to DisplayYesNo as it is not supported by BT spec. */
5278                 cp.capability = (conn->io_capability == 0x04) ?
5279                                 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5280
5281                 /* If we are initiators, there is no remote information yet */
5282                 if (conn->remote_auth == 0xff) {
5283                         /* Request MITM protection if our IO caps allow it
5284                          * except for the no-bonding case.
5285                          */
5286                         if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5287                             conn->auth_type != HCI_AT_NO_BONDING)
5288                                 conn->auth_type |= 0x01;
5289                 } else {
5290                         conn->auth_type = hci_get_auth_req(conn);
5291                 }
5292
5293                 /* If we're not bondable, force one of the non-bondable
5294                  * authentication requirement values.
5295                  */
5296                 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5297                         conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5298
5299                 cp.authentication = conn->auth_type;
5300                 cp.oob_data = bredr_oob_data_present(conn);
5301
5302                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5303                              sizeof(cp), &cp);
5304         } else {
5305                 struct hci_cp_io_capability_neg_reply cp;
5306
5307                 bacpy(&cp.bdaddr, &ev->bdaddr);
5308                 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5309
5310                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5311                              sizeof(cp), &cp);
5312         }
5313
5314 unlock:
5315         hci_dev_unlock(hdev);
5316 }
5317
5318 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5319                                   struct sk_buff *skb)
5320 {
5321         struct hci_ev_io_capa_reply *ev = data;
5322         struct hci_conn *conn;
5323
5324         bt_dev_dbg(hdev, "");
5325
5326         hci_dev_lock(hdev);
5327
5328         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5329         if (!conn)
5330                 goto unlock;
5331
5332         conn->remote_cap = ev->capability;
5333         conn->remote_auth = ev->authentication;
5334
5335 unlock:
5336         hci_dev_unlock(hdev);
5337 }
5338
5339 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5340                                          struct sk_buff *skb)
5341 {
5342         struct hci_ev_user_confirm_req *ev = data;
5343         int loc_mitm, rem_mitm, confirm_hint = 0;
5344         struct hci_conn *conn;
5345
5346         bt_dev_dbg(hdev, "");
5347
5348         hci_dev_lock(hdev);
5349
5350         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5351                 goto unlock;
5352
5353         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5354         if (!conn)
5355                 goto unlock;
5356
5357         loc_mitm = (conn->auth_type & 0x01);
5358         rem_mitm = (conn->remote_auth & 0x01);
5359
5360         /* If we require MITM but the remote device can't provide that
5361          * (it has NoInputNoOutput) then reject the confirmation
5362          * request. We check the security level here since it doesn't
5363          * necessarily match conn->auth_type.
5364          */
5365         if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5366             conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5367                 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5368                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5369                              sizeof(ev->bdaddr), &ev->bdaddr);
5370                 goto unlock;
5371         }
5372
5373         /* If no side requires MITM protection; auto-accept */
5374         if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5375             (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5376
5377                 /* If we're not the initiators request authorization to
5378                  * proceed from user space (mgmt_user_confirm with
5379                  * confirm_hint set to 1). The exception is if neither
5380                  * side had MITM or if the local IO capability is
5381                  * NoInputNoOutput, in which case we do auto-accept
5382                  */
5383                 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5384                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5385                     (loc_mitm || rem_mitm)) {
5386                         bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5387                         confirm_hint = 1;
5388                         goto confirm;
5389                 }
5390
5391                 /* If there already exists link key in local host, leave the
5392                  * decision to user space since the remote device could be
5393                  * legitimate or malicious.
5394                  */
5395                 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5396                         bt_dev_dbg(hdev, "Local host already has link key");
5397                         confirm_hint = 1;
5398                         goto confirm;
5399                 }
5400
5401                 BT_DBG("Auto-accept of user confirmation with %ums delay",
5402                        hdev->auto_accept_delay);
5403
5404                 if (hdev->auto_accept_delay > 0) {
5405                         int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5406                         queue_delayed_work(conn->hdev->workqueue,
5407                                            &conn->auto_accept_work, delay);
5408                         goto unlock;
5409                 }
5410
5411                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5412                              sizeof(ev->bdaddr), &ev->bdaddr);
5413                 goto unlock;
5414         }
5415
5416 confirm:
5417         mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5418                                   le32_to_cpu(ev->passkey), confirm_hint);
5419
5420 unlock:
5421         hci_dev_unlock(hdev);
5422 }
5423
5424 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5425                                          struct sk_buff *skb)
5426 {
5427         struct hci_ev_user_passkey_req *ev = data;
5428
5429         bt_dev_dbg(hdev, "");
5430
5431         if (hci_dev_test_flag(hdev, HCI_MGMT))
5432                 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5433 }
5434
5435 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5436                                         struct sk_buff *skb)
5437 {
5438         struct hci_ev_user_passkey_notify *ev = data;
5439         struct hci_conn *conn;
5440
5441         bt_dev_dbg(hdev, "");
5442
5443         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5444         if (!conn)
5445                 return;
5446
5447         conn->passkey_notify = __le32_to_cpu(ev->passkey);
5448         conn->passkey_entered = 0;
5449
5450         if (hci_dev_test_flag(hdev, HCI_MGMT))
5451                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5452                                          conn->dst_type, conn->passkey_notify,
5453                                          conn->passkey_entered);
5454 }
5455
5456 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5457                                     struct sk_buff *skb)
5458 {
5459         struct hci_ev_keypress_notify *ev = data;
5460         struct hci_conn *conn;
5461
5462         bt_dev_dbg(hdev, "");
5463
5464         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5465         if (!conn)
5466                 return;
5467
5468         switch (ev->type) {
5469         case HCI_KEYPRESS_STARTED:
5470                 conn->passkey_entered = 0;
5471                 return;
5472
5473         case HCI_KEYPRESS_ENTERED:
5474                 conn->passkey_entered++;
5475                 break;
5476
5477         case HCI_KEYPRESS_ERASED:
5478                 conn->passkey_entered--;
5479                 break;
5480
5481         case HCI_KEYPRESS_CLEARED:
5482                 conn->passkey_entered = 0;
5483                 break;
5484
5485         case HCI_KEYPRESS_COMPLETED:
5486                 return;
5487         }
5488
5489         if (hci_dev_test_flag(hdev, HCI_MGMT))
5490                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5491                                          conn->dst_type, conn->passkey_notify,
5492                                          conn->passkey_entered);
5493 }
5494
5495 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5496                                          struct sk_buff *skb)
5497 {
5498         struct hci_ev_simple_pair_complete *ev = data;
5499         struct hci_conn *conn;
5500
5501         bt_dev_dbg(hdev, "");
5502
5503         hci_dev_lock(hdev);
5504
5505         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5506         if (!conn)
5507                 goto unlock;
5508
5509         /* Reset the authentication requirement to unknown */
5510         conn->remote_auth = 0xff;
5511
5512         /* To avoid duplicate auth_failed events to user space we check
5513          * the HCI_CONN_AUTH_PEND flag which will be set if we
5514          * initiated the authentication. A traditional auth_complete
5515          * event gets always produced as initiator and is also mapped to
5516          * the mgmt_auth_failed event */
5517         if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5518                 mgmt_auth_failed(conn, ev->status);
5519
5520         hci_conn_drop(conn);
5521
5522 unlock:
5523         hci_dev_unlock(hdev);
5524 }
5525
5526 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5527                                          struct sk_buff *skb)
5528 {
5529         struct hci_ev_remote_host_features *ev = data;
5530         struct inquiry_entry *ie;
5531         struct hci_conn *conn;
5532
5533         bt_dev_dbg(hdev, "");
5534
5535         hci_dev_lock(hdev);
5536
5537         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5538         if (conn)
5539                 memcpy(conn->features[1], ev->features, 8);
5540
5541         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5542         if (ie)
5543                 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5544
5545         hci_dev_unlock(hdev);
5546 }
5547
5548 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5549                                             struct sk_buff *skb)
5550 {
5551         struct hci_ev_remote_oob_data_request *ev = edata;
5552         struct oob_data *data;
5553
5554         bt_dev_dbg(hdev, "");
5555
5556         hci_dev_lock(hdev);
5557
5558         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5559                 goto unlock;
5560
5561         data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5562         if (!data) {
5563                 struct hci_cp_remote_oob_data_neg_reply cp;
5564
5565                 bacpy(&cp.bdaddr, &ev->bdaddr);
5566                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5567                              sizeof(cp), &cp);
5568                 goto unlock;
5569         }
5570
5571         if (bredr_sc_enabled(hdev)) {
5572                 struct hci_cp_remote_oob_ext_data_reply cp;
5573
5574                 bacpy(&cp.bdaddr, &ev->bdaddr);
5575                 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5576                         memset(cp.hash192, 0, sizeof(cp.hash192));
5577                         memset(cp.rand192, 0, sizeof(cp.rand192));
5578                 } else {
5579                         memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5580                         memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5581                 }
5582                 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5583                 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5584
5585                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5586                              sizeof(cp), &cp);
5587         } else {
5588                 struct hci_cp_remote_oob_data_reply cp;
5589
5590                 bacpy(&cp.bdaddr, &ev->bdaddr);
5591                 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5592                 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5593
5594                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5595                              sizeof(cp), &cp);
5596         }
5597
5598 unlock:
5599         hci_dev_unlock(hdev);
5600 }
5601
5602 #if IS_ENABLED(CONFIG_BT_HS)
5603 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5604                                   struct sk_buff *skb)
5605 {
5606         struct hci_ev_channel_selected *ev = data;
5607         struct hci_conn *hcon;
5608
5609         bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5610
5611         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5612         if (!hcon)
5613                 return;
5614
5615         amp_read_loc_assoc_final_data(hdev, hcon);
5616 }
5617
5618 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5619                                       struct sk_buff *skb)
5620 {
5621         struct hci_ev_phy_link_complete *ev = data;
5622         struct hci_conn *hcon, *bredr_hcon;
5623
5624         bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5625                    ev->status);
5626
5627         hci_dev_lock(hdev);
5628
5629         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5630         if (!hcon)
5631                 goto unlock;
5632
5633         if (!hcon->amp_mgr)
5634                 goto unlock;
5635
5636         if (ev->status) {
5637                 hci_conn_del(hcon);
5638                 goto unlock;
5639         }
5640
5641         bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5642
5643         hcon->state = BT_CONNECTED;
5644         bacpy(&hcon->dst, &bredr_hcon->dst);
5645
5646         hci_conn_hold(hcon);
5647         hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5648         hci_conn_drop(hcon);
5649
5650         hci_debugfs_create_conn(hcon);
5651         hci_conn_add_sysfs(hcon);
5652
5653         amp_physical_cfm(bredr_hcon, hcon);
5654
5655 unlock:
5656         hci_dev_unlock(hdev);
5657 }
5658
5659 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5660                                      struct sk_buff *skb)
5661 {
5662         struct hci_ev_logical_link_complete *ev = data;
5663         struct hci_conn *hcon;
5664         struct hci_chan *hchan;
5665         struct amp_mgr *mgr;
5666
5667         bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5668                    le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5669
5670         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5671         if (!hcon)
5672                 return;
5673
5674         /* Create AMP hchan */
5675         hchan = hci_chan_create(hcon);
5676         if (!hchan)
5677                 return;
5678
5679         hchan->handle = le16_to_cpu(ev->handle);
5680         hchan->amp = true;
5681
5682         BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5683
5684         mgr = hcon->amp_mgr;
5685         if (mgr && mgr->bredr_chan) {
5686                 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5687
5688                 l2cap_chan_lock(bredr_chan);
5689
5690                 bredr_chan->conn->mtu = hdev->block_mtu;
5691                 l2cap_logical_cfm(bredr_chan, hchan, 0);
5692                 hci_conn_hold(hcon);
5693
5694                 l2cap_chan_unlock(bredr_chan);
5695         }
5696 }
5697
5698 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
5699                                              struct sk_buff *skb)
5700 {
5701         struct hci_ev_disconn_logical_link_complete *ev = data;
5702         struct hci_chan *hchan;
5703
5704         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
5705                    le16_to_cpu(ev->handle), ev->status);
5706
5707         if (ev->status)
5708                 return;
5709
5710         hci_dev_lock(hdev);
5711
5712         hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
5713         if (!hchan || !hchan->amp)
5714                 goto unlock;
5715
5716         amp_destroy_logical_link(hchan, ev->reason);
5717
5718 unlock:
5719         hci_dev_unlock(hdev);
5720 }
5721
5722 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
5723                                              struct sk_buff *skb)
5724 {
5725         struct hci_ev_disconn_phy_link_complete *ev = data;
5726         struct hci_conn *hcon;
5727
5728         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5729
5730         if (ev->status)
5731                 return;
5732
5733         hci_dev_lock(hdev);
5734
5735         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5736         if (hcon && hcon->type == AMP_LINK) {
5737                 hcon->state = BT_CLOSED;
5738                 hci_disconn_cfm(hcon, ev->reason);
5739                 hci_conn_del(hcon);
5740         }
5741
5742         hci_dev_unlock(hdev);
5743 }
5744 #endif
5745
5746 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
5747                                 u8 bdaddr_type, bdaddr_t *local_rpa)
5748 {
5749         if (conn->out) {
5750                 conn->dst_type = bdaddr_type;
5751                 conn->resp_addr_type = bdaddr_type;
5752                 bacpy(&conn->resp_addr, bdaddr);
5753
5754                 /* Check if the controller has set a Local RPA then it must be
5755                  * used instead or hdev->rpa.
5756                  */
5757                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5758                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5759                         bacpy(&conn->init_addr, local_rpa);
5760                 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
5761                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5762                         bacpy(&conn->init_addr, &conn->hdev->rpa);
5763                 } else {
5764                         hci_copy_identity_address(conn->hdev, &conn->init_addr,
5765                                                   &conn->init_addr_type);
5766                 }
5767         } else {
5768                 conn->resp_addr_type = conn->hdev->adv_addr_type;
5769                 /* Check if the controller has set a Local RPA then it must be
5770                  * used instead or hdev->rpa.
5771                  */
5772                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
5773                         conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
5774                         bacpy(&conn->resp_addr, local_rpa);
5775                 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
5776                         /* In case of ext adv, resp_addr will be updated in
5777                          * Adv Terminated event.
5778                          */
5779                         if (!ext_adv_capable(conn->hdev))
5780                                 bacpy(&conn->resp_addr,
5781                                       &conn->hdev->random_addr);
5782                 } else {
5783                         bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
5784                 }
5785
5786                 conn->init_addr_type = bdaddr_type;
5787                 bacpy(&conn->init_addr, bdaddr);
5788
5789                 /* For incoming connections, set the default minimum
5790                  * and maximum connection interval. They will be used
5791                  * to check if the parameters are in range and if not
5792                  * trigger the connection update procedure.
5793                  */
5794                 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
5795                 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
5796         }
5797 }
5798
5799 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
5800                                  bdaddr_t *bdaddr, u8 bdaddr_type,
5801                                  bdaddr_t *local_rpa, u8 role, u16 handle,
5802                                  u16 interval, u16 latency,
5803                                  u16 supervision_timeout)
5804 {
5805         struct hci_conn_params *params;
5806         struct hci_conn *conn;
5807         struct smp_irk *irk;
5808         u8 addr_type;
5809
5810         hci_dev_lock(hdev);
5811
5812         /* All controllers implicitly stop advertising in the event of a
5813          * connection, so ensure that the state bit is cleared.
5814          */
5815         hci_dev_clear_flag(hdev, HCI_LE_ADV);
5816
5817         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
5818         if (!conn) {
5819                 /* In case of error status and there is no connection pending
5820                  * just unlock as there is nothing to cleanup.
5821                  */
5822                 if (status)
5823                         goto unlock;
5824
5825                 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role);
5826                 if (!conn) {
5827                         bt_dev_err(hdev, "no memory for new connection");
5828                         goto unlock;
5829                 }
5830
5831                 conn->dst_type = bdaddr_type;
5832
5833                 /* If we didn't have a hci_conn object previously
5834                  * but we're in central role this must be something
5835                  * initiated using an accept list. Since accept list based
5836                  * connections are not "first class citizens" we don't
5837                  * have full tracking of them. Therefore, we go ahead
5838                  * with a "best effort" approach of determining the
5839                  * initiator address based on the HCI_PRIVACY flag.
5840                  */
5841                 if (conn->out) {
5842                         conn->resp_addr_type = bdaddr_type;
5843                         bacpy(&conn->resp_addr, bdaddr);
5844                         if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
5845                                 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
5846                                 bacpy(&conn->init_addr, &hdev->rpa);
5847                         } else {
5848                                 hci_copy_identity_address(hdev,
5849                                                           &conn->init_addr,
5850                                                           &conn->init_addr_type);
5851                         }
5852                 }
5853         } else {
5854                 cancel_delayed_work(&conn->le_conn_timeout);
5855         }
5856
5857         /* The HCI_LE_Connection_Complete event is only sent once per connection.
5858          * Processing it more than once per connection can corrupt kernel memory.
5859          *
5860          * As the connection handle is set here for the first time, it indicates
5861          * whether the connection is already set up.
5862          */
5863         if (conn->handle != HCI_CONN_HANDLE_UNSET) {
5864                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
5865                 goto unlock;
5866         }
5867
5868         le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
5869
5870         /* Lookup the identity address from the stored connection
5871          * address and address type.
5872          *
5873          * When establishing connections to an identity address, the
5874          * connection procedure will store the resolvable random
5875          * address first. Now if it can be converted back into the
5876          * identity address, start using the identity address from
5877          * now on.
5878          */
5879         irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
5880         if (irk) {
5881                 bacpy(&conn->dst, &irk->bdaddr);
5882                 conn->dst_type = irk->addr_type;
5883         }
5884
5885         conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
5886
5887         if (handle > HCI_CONN_HANDLE_MAX) {
5888                 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle,
5889                            HCI_CONN_HANDLE_MAX);
5890                 status = HCI_ERROR_INVALID_PARAMETERS;
5891         }
5892
5893         /* All connection failure handling is taken care of by the
5894          * hci_conn_failed function which is triggered by the HCI
5895          * request completion callbacks used for connecting.
5896          */
5897         if (status)
5898                 goto unlock;
5899
5900         /* Drop the connection if it has been aborted */
5901         if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
5902                 hci_conn_drop(conn);
5903                 goto unlock;
5904         }
5905
5906         if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
5907                 addr_type = BDADDR_LE_PUBLIC;
5908         else
5909                 addr_type = BDADDR_LE_RANDOM;
5910
5911         /* Drop the connection if the device is blocked */
5912         if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
5913                 hci_conn_drop(conn);
5914                 goto unlock;
5915         }
5916
5917         if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5918                 mgmt_device_connected(hdev, conn, NULL, 0);
5919
5920         conn->sec_level = BT_SECURITY_LOW;
5921         conn->handle = handle;
5922         conn->state = BT_CONFIG;
5923
5924         /* Store current advertising instance as connection advertising instance
5925          * when sotfware rotation is in use so it can be re-enabled when
5926          * disconnected.
5927          */
5928         if (!ext_adv_capable(hdev))
5929                 conn->adv_instance = hdev->cur_adv_instance;
5930
5931         conn->le_conn_interval = interval;
5932         conn->le_conn_latency = latency;
5933         conn->le_supv_timeout = supervision_timeout;
5934
5935         hci_debugfs_create_conn(conn);
5936         hci_conn_add_sysfs(conn);
5937
5938         /* The remote features procedure is defined for central
5939          * role only. So only in case of an initiated connection
5940          * request the remote features.
5941          *
5942          * If the local controller supports peripheral-initiated features
5943          * exchange, then requesting the remote features in peripheral
5944          * role is possible. Otherwise just transition into the
5945          * connected state without requesting the remote features.
5946          */
5947         if (conn->out ||
5948             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
5949                 struct hci_cp_le_read_remote_features cp;
5950
5951                 cp.handle = __cpu_to_le16(conn->handle);
5952
5953                 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
5954                              sizeof(cp), &cp);
5955
5956                 hci_conn_hold(conn);
5957         } else {
5958                 conn->state = BT_CONNECTED;
5959                 hci_connect_cfm(conn, status);
5960         }
5961
5962         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
5963                                            conn->dst_type);
5964         if (params) {
5965                 list_del_init(&params->action);
5966                 if (params->conn) {
5967                         hci_conn_drop(params->conn);
5968                         hci_conn_put(params->conn);
5969                         params->conn = NULL;
5970                 }
5971         }
5972
5973 unlock:
5974         hci_update_passive_scan(hdev);
5975         hci_dev_unlock(hdev);
5976 }
5977
5978 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
5979                                      struct sk_buff *skb)
5980 {
5981         struct hci_ev_le_conn_complete *ev = data;
5982
5983         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5984
5985         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
5986                              NULL, ev->role, le16_to_cpu(ev->handle),
5987                              le16_to_cpu(ev->interval),
5988                              le16_to_cpu(ev->latency),
5989                              le16_to_cpu(ev->supervision_timeout));
5990 }
5991
5992 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
5993                                          struct sk_buff *skb)
5994 {
5995         struct hci_ev_le_enh_conn_complete *ev = data;
5996
5997         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5998
5999         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6000                              &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
6001                              le16_to_cpu(ev->interval),
6002                              le16_to_cpu(ev->latency),
6003                              le16_to_cpu(ev->supervision_timeout));
6004 }
6005
6006 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6007                                     struct sk_buff *skb)
6008 {
6009         struct hci_evt_le_ext_adv_set_term *ev = data;
6010         struct hci_conn *conn;
6011         struct adv_info *adv, *n;
6012
6013         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6014
6015         /* The Bluetooth Core 5.3 specification clearly states that this event
6016          * shall not be sent when the Host disables the advertising set. So in
6017          * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6018          *
6019          * When the Host disables an advertising set, all cleanup is done via
6020          * its command callback and not needed to be duplicated here.
6021          */
6022         if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6023                 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6024                 return;
6025         }
6026
6027         hci_dev_lock(hdev);
6028
6029         adv = hci_find_adv_instance(hdev, ev->handle);
6030
6031         if (ev->status) {
6032                 if (!adv)
6033                         goto unlock;
6034
6035                 /* Remove advertising as it has been terminated */
6036                 hci_remove_adv_instance(hdev, ev->handle);
6037                 mgmt_advertising_removed(NULL, hdev, ev->handle);
6038
6039                 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6040                         if (adv->enabled)
6041                                 goto unlock;
6042                 }
6043
6044                 /* We are no longer advertising, clear HCI_LE_ADV */
6045                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6046                 goto unlock;
6047         }
6048
6049         if (adv)
6050                 adv->enabled = false;
6051
6052         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6053         if (conn) {
6054                 /* Store handle in the connection so the correct advertising
6055                  * instance can be re-enabled when disconnected.
6056                  */
6057                 conn->adv_instance = ev->handle;
6058
6059                 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6060                     bacmp(&conn->resp_addr, BDADDR_ANY))
6061                         goto unlock;
6062
6063                 if (!ev->handle) {
6064                         bacpy(&conn->resp_addr, &hdev->random_addr);
6065                         goto unlock;
6066                 }
6067
6068                 if (adv)
6069                         bacpy(&conn->resp_addr, &adv->random_addr);
6070         }
6071
6072 unlock:
6073         hci_dev_unlock(hdev);
6074 }
6075
6076 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6077                                             struct sk_buff *skb)
6078 {
6079         struct hci_ev_le_conn_update_complete *ev = data;
6080         struct hci_conn *conn;
6081
6082         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6083
6084         if (ev->status)
6085                 return;
6086
6087         hci_dev_lock(hdev);
6088
6089         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6090         if (conn) {
6091                 conn->le_conn_interval = le16_to_cpu(ev->interval);
6092                 conn->le_conn_latency = le16_to_cpu(ev->latency);
6093                 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6094         }
6095
6096         hci_dev_unlock(hdev);
6097 }
6098
6099 /* This function requires the caller holds hdev->lock */
6100 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6101                                               bdaddr_t *addr,
6102                                               u8 addr_type, bool addr_resolved,
6103                                               u8 adv_type)
6104 {
6105         struct hci_conn *conn;
6106         struct hci_conn_params *params;
6107
6108         /* If the event is not connectable don't proceed further */
6109         if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6110                 return NULL;
6111
6112         /* Ignore if the device is blocked or hdev is suspended */
6113         if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6114             hdev->suspended)
6115                 return NULL;
6116
6117         /* Most controller will fail if we try to create new connections
6118          * while we have an existing one in peripheral role.
6119          */
6120         if (hdev->conn_hash.le_num_peripheral > 0 &&
6121             (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6122              !(hdev->le_states[3] & 0x10)))
6123                 return NULL;
6124
6125         /* If we're not connectable only connect devices that we have in
6126          * our pend_le_conns list.
6127          */
6128         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6129                                            addr_type);
6130         if (!params)
6131                 return NULL;
6132
6133         if (!params->explicit_connect) {
6134                 switch (params->auto_connect) {
6135                 case HCI_AUTO_CONN_DIRECT:
6136                         /* Only devices advertising with ADV_DIRECT_IND are
6137                          * triggering a connection attempt. This is allowing
6138                          * incoming connections from peripheral devices.
6139                          */
6140                         if (adv_type != LE_ADV_DIRECT_IND)
6141                                 return NULL;
6142                         break;
6143                 case HCI_AUTO_CONN_ALWAYS:
6144                         /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6145                          * are triggering a connection attempt. This means
6146                          * that incoming connections from peripheral device are
6147                          * accepted and also outgoing connections to peripheral
6148                          * devices are established when found.
6149                          */
6150                         break;
6151                 default:
6152                         return NULL;
6153                 }
6154         }
6155
6156         conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6157                               BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6158                               HCI_ROLE_MASTER);
6159         if (!IS_ERR(conn)) {
6160                 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6161                  * by higher layer that tried to connect, if no then
6162                  * store the pointer since we don't really have any
6163                  * other owner of the object besides the params that
6164                  * triggered it. This way we can abort the connection if
6165                  * the parameters get removed and keep the reference
6166                  * count consistent once the connection is established.
6167                  */
6168
6169                 if (!params->explicit_connect)
6170                         params->conn = hci_conn_get(conn);
6171
6172                 return conn;
6173         }
6174
6175         switch (PTR_ERR(conn)) {
6176         case -EBUSY:
6177                 /* If hci_connect() returns -EBUSY it means there is already
6178                  * an LE connection attempt going on. Since controllers don't
6179                  * support more than one connection attempt at the time, we
6180                  * don't consider this an error case.
6181                  */
6182                 break;
6183         default:
6184                 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6185                 return NULL;
6186         }
6187
6188         return NULL;
6189 }
6190
6191 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6192                                u8 bdaddr_type, bdaddr_t *direct_addr,
6193                                u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6194                                bool ext_adv, bool ctl_time, u64 instant)
6195 {
6196         struct discovery_state *d = &hdev->discovery;
6197         struct smp_irk *irk;
6198         struct hci_conn *conn;
6199         bool match, bdaddr_resolved;
6200         u32 flags;
6201         u8 *ptr;
6202
6203         switch (type) {
6204         case LE_ADV_IND:
6205         case LE_ADV_DIRECT_IND:
6206         case LE_ADV_SCAN_IND:
6207         case LE_ADV_NONCONN_IND:
6208         case LE_ADV_SCAN_RSP:
6209                 break;
6210         default:
6211                 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6212                                        "type: 0x%02x", type);
6213                 return;
6214         }
6215
6216         if (!ext_adv && len > HCI_MAX_AD_LENGTH) {
6217                 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes");
6218                 return;
6219         }
6220
6221         /* Find the end of the data in case the report contains padded zero
6222          * bytes at the end causing an invalid length value.
6223          *
6224          * When data is NULL, len is 0 so there is no need for extra ptr
6225          * check as 'ptr < data + 0' is already false in such case.
6226          */
6227         for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6228                 if (ptr + 1 + *ptr > data + len)
6229                         break;
6230         }
6231
6232         /* Adjust for actual length. This handles the case when remote
6233          * device is advertising with incorrect data length.
6234          */
6235         len = ptr - data;
6236
6237         /* If the direct address is present, then this report is from
6238          * a LE Direct Advertising Report event. In that case it is
6239          * important to see if the address is matching the local
6240          * controller address.
6241          */
6242         if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6243                 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6244                                                   &bdaddr_resolved);
6245
6246                 /* Only resolvable random addresses are valid for these
6247                  * kind of reports and others can be ignored.
6248                  */
6249                 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6250                         return;
6251
6252                 /* If the controller is not using resolvable random
6253                  * addresses, then this report can be ignored.
6254                  */
6255                 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6256                         return;
6257
6258                 /* If the local IRK of the controller does not match
6259                  * with the resolvable random address provided, then
6260                  * this report can be ignored.
6261                  */
6262                 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6263                         return;
6264         }
6265
6266         /* Check if we need to convert to identity address */
6267         irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6268         if (irk) {
6269                 bdaddr = &irk->bdaddr;
6270                 bdaddr_type = irk->addr_type;
6271         }
6272
6273         bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6274
6275         /* Check if we have been requested to connect to this device.
6276          *
6277          * direct_addr is set only for directed advertising reports (it is NULL
6278          * for advertising reports) and is already verified to be RPA above.
6279          */
6280         conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6281                                      type);
6282         if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) {
6283                 /* Store report for later inclusion by
6284                  * mgmt_device_connected
6285                  */
6286                 memcpy(conn->le_adv_data, data, len);
6287                 conn->le_adv_data_len = len;
6288         }
6289
6290         if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6291                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6292         else
6293                 flags = 0;
6294
6295         /* All scan results should be sent up for Mesh systems */
6296         if (hci_dev_test_flag(hdev, HCI_MESH)) {
6297                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6298                                   rssi, flags, data, len, NULL, 0, instant);
6299                 return;
6300         }
6301
6302         /* Passive scanning shouldn't trigger any device found events,
6303          * except for devices marked as CONN_REPORT for which we do send
6304          * device found events, or advertisement monitoring requested.
6305          */
6306         if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6307                 if (type == LE_ADV_DIRECT_IND)
6308                         return;
6309
6310                 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6311                                                bdaddr, bdaddr_type) &&
6312                     idr_is_empty(&hdev->adv_monitors_idr))
6313                         return;
6314
6315                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6316                                   rssi, flags, data, len, NULL, 0, 0);
6317                 return;
6318         }
6319
6320         /* When receiving a scan response, then there is no way to
6321          * know if the remote device is connectable or not. However
6322          * since scan responses are merged with a previously seen
6323          * advertising report, the flags field from that report
6324          * will be used.
6325          *
6326          * In the unlikely case that a controller just sends a scan
6327          * response event that doesn't match the pending report, then
6328          * it is marked as a standalone SCAN_RSP.
6329          */
6330         if (type == LE_ADV_SCAN_RSP)
6331                 flags = MGMT_DEV_FOUND_SCAN_RSP;
6332
6333         /* If there's nothing pending either store the data from this
6334          * event or send an immediate device found event if the data
6335          * should not be stored for later.
6336          */
6337         if (!ext_adv && !has_pending_adv_report(hdev)) {
6338                 /* If the report will trigger a SCAN_REQ store it for
6339                  * later merging.
6340                  */
6341                 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6342                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6343                                                  rssi, flags, data, len);
6344                         return;
6345                 }
6346
6347                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6348                                   rssi, flags, data, len, NULL, 0, 0);
6349                 return;
6350         }
6351
6352         /* Check if the pending report is for the same device as the new one */
6353         match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6354                  bdaddr_type == d->last_adv_addr_type);
6355
6356         /* If the pending data doesn't match this report or this isn't a
6357          * scan response (e.g. we got a duplicate ADV_IND) then force
6358          * sending of the pending data.
6359          */
6360         if (type != LE_ADV_SCAN_RSP || !match) {
6361                 /* Send out whatever is in the cache, but skip duplicates */
6362                 if (!match)
6363                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6364                                           d->last_adv_addr_type, NULL,
6365                                           d->last_adv_rssi, d->last_adv_flags,
6366                                           d->last_adv_data,
6367                                           d->last_adv_data_len, NULL, 0, 0);
6368
6369                 /* If the new report will trigger a SCAN_REQ store it for
6370                  * later merging.
6371                  */
6372                 if (!ext_adv && (type == LE_ADV_IND ||
6373                                  type == LE_ADV_SCAN_IND)) {
6374                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6375                                                  rssi, flags, data, len);
6376                         return;
6377                 }
6378
6379                 /* The advertising reports cannot be merged, so clear
6380                  * the pending report and send out a device found event.
6381                  */
6382                 clear_pending_adv_report(hdev);
6383                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6384                                   rssi, flags, data, len, NULL, 0, 0);
6385                 return;
6386         }
6387
6388         /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6389          * the new event is a SCAN_RSP. We can therefore proceed with
6390          * sending a merged device found event.
6391          */
6392         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6393                           d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6394                           d->last_adv_data, d->last_adv_data_len, data, len, 0);
6395         clear_pending_adv_report(hdev);
6396 }
6397
6398 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6399                                   struct sk_buff *skb)
6400 {
6401         struct hci_ev_le_advertising_report *ev = data;
6402         u64 instant = jiffies;
6403
6404         if (!ev->num)
6405                 return;
6406
6407         hci_dev_lock(hdev);
6408
6409         while (ev->num--) {
6410                 struct hci_ev_le_advertising_info *info;
6411                 s8 rssi;
6412
6413                 info = hci_le_ev_skb_pull(hdev, skb,
6414                                           HCI_EV_LE_ADVERTISING_REPORT,
6415                                           sizeof(*info));
6416                 if (!info)
6417                         break;
6418
6419                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6420                                         info->length + 1))
6421                         break;
6422
6423                 if (info->length <= HCI_MAX_AD_LENGTH) {
6424                         rssi = info->data[info->length];
6425                         process_adv_report(hdev, info->type, &info->bdaddr,
6426                                            info->bdaddr_type, NULL, 0, rssi,
6427                                            info->data, info->length, false,
6428                                            false, instant);
6429                 } else {
6430                         bt_dev_err(hdev, "Dropping invalid advertising data");
6431                 }
6432         }
6433
6434         hci_dev_unlock(hdev);
6435 }
6436
6437 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6438 {
6439         if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6440                 switch (evt_type) {
6441                 case LE_LEGACY_ADV_IND:
6442                         return LE_ADV_IND;
6443                 case LE_LEGACY_ADV_DIRECT_IND:
6444                         return LE_ADV_DIRECT_IND;
6445                 case LE_LEGACY_ADV_SCAN_IND:
6446                         return LE_ADV_SCAN_IND;
6447                 case LE_LEGACY_NONCONN_IND:
6448                         return LE_ADV_NONCONN_IND;
6449                 case LE_LEGACY_SCAN_RSP_ADV:
6450                 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6451                         return LE_ADV_SCAN_RSP;
6452                 }
6453
6454                 goto invalid;
6455         }
6456
6457         if (evt_type & LE_EXT_ADV_CONN_IND) {
6458                 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6459                         return LE_ADV_DIRECT_IND;
6460
6461                 return LE_ADV_IND;
6462         }
6463
6464         if (evt_type & LE_EXT_ADV_SCAN_RSP)
6465                 return LE_ADV_SCAN_RSP;
6466
6467         if (evt_type & LE_EXT_ADV_SCAN_IND)
6468                 return LE_ADV_SCAN_IND;
6469
6470         if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6471             evt_type & LE_EXT_ADV_DIRECT_IND)
6472                 return LE_ADV_NONCONN_IND;
6473
6474 invalid:
6475         bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6476                                evt_type);
6477
6478         return LE_ADV_INVALID;
6479 }
6480
6481 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6482                                       struct sk_buff *skb)
6483 {
6484         struct hci_ev_le_ext_adv_report *ev = data;
6485         u64 instant = jiffies;
6486
6487         if (!ev->num)
6488                 return;
6489
6490         hci_dev_lock(hdev);
6491
6492         while (ev->num--) {
6493                 struct hci_ev_le_ext_adv_info *info;
6494                 u8 legacy_evt_type;
6495                 u16 evt_type;
6496
6497                 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6498                                           sizeof(*info));
6499                 if (!info)
6500                         break;
6501
6502                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6503                                         info->length))
6504                         break;
6505
6506                 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK;
6507                 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6508                 if (legacy_evt_type != LE_ADV_INVALID) {
6509                         process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6510                                            info->bdaddr_type, NULL, 0,
6511                                            info->rssi, info->data, info->length,
6512                                            !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6513                                            false, instant);
6514                 }
6515         }
6516
6517         hci_dev_unlock(hdev);
6518 }
6519
6520 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6521 {
6522         struct hci_cp_le_pa_term_sync cp;
6523
6524         memset(&cp, 0, sizeof(cp));
6525         cp.handle = handle;
6526
6527         return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6528 }
6529
6530 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6531                                             struct sk_buff *skb)
6532 {
6533         struct hci_ev_le_pa_sync_established *ev = data;
6534         int mask = hdev->link_mode;
6535         __u8 flags = 0;
6536
6537         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6538
6539         if (ev->status)
6540                 return;
6541
6542         hci_dev_lock(hdev);
6543
6544         hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6545
6546         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6547         if (!(mask & HCI_LM_ACCEPT))
6548                 hci_le_pa_term_sync(hdev, ev->handle);
6549
6550         hci_dev_unlock(hdev);
6551 }
6552
6553 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6554                                             struct sk_buff *skb)
6555 {
6556         struct hci_ev_le_remote_feat_complete *ev = data;
6557         struct hci_conn *conn;
6558
6559         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6560
6561         hci_dev_lock(hdev);
6562
6563         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6564         if (conn) {
6565                 if (!ev->status)
6566                         memcpy(conn->features[0], ev->features, 8);
6567
6568                 if (conn->state == BT_CONFIG) {
6569                         __u8 status;
6570
6571                         /* If the local controller supports peripheral-initiated
6572                          * features exchange, but the remote controller does
6573                          * not, then it is possible that the error code 0x1a
6574                          * for unsupported remote feature gets returned.
6575                          *
6576                          * In this specific case, allow the connection to
6577                          * transition into connected state and mark it as
6578                          * successful.
6579                          */
6580                         if (!conn->out && ev->status == 0x1a &&
6581                             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6582                                 status = 0x00;
6583                         else
6584                                 status = ev->status;
6585
6586                         conn->state = BT_CONNECTED;
6587                         hci_connect_cfm(conn, status);
6588                         hci_conn_drop(conn);
6589                 }
6590         }
6591
6592         hci_dev_unlock(hdev);
6593 }
6594
6595 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6596                                    struct sk_buff *skb)
6597 {
6598         struct hci_ev_le_ltk_req *ev = data;
6599         struct hci_cp_le_ltk_reply cp;
6600         struct hci_cp_le_ltk_neg_reply neg;
6601         struct hci_conn *conn;
6602         struct smp_ltk *ltk;
6603
6604         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6605
6606         hci_dev_lock(hdev);
6607
6608         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6609         if (conn == NULL)
6610                 goto not_found;
6611
6612         ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6613         if (!ltk)
6614                 goto not_found;
6615
6616         if (smp_ltk_is_sc(ltk)) {
6617                 /* With SC both EDiv and Rand are set to zero */
6618                 if (ev->ediv || ev->rand)
6619                         goto not_found;
6620         } else {
6621                 /* For non-SC keys check that EDiv and Rand match */
6622                 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6623                         goto not_found;
6624         }
6625
6626         memcpy(cp.ltk, ltk->val, ltk->enc_size);
6627         memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6628         cp.handle = cpu_to_le16(conn->handle);
6629
6630         conn->pending_sec_level = smp_ltk_sec_level(ltk);
6631
6632         conn->enc_key_size = ltk->enc_size;
6633
6634         hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
6635
6636         /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
6637          * temporary key used to encrypt a connection following
6638          * pairing. It is used during the Encrypted Session Setup to
6639          * distribute the keys. Later, security can be re-established
6640          * using a distributed LTK.
6641          */
6642         if (ltk->type == SMP_STK) {
6643                 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6644                 list_del_rcu(&ltk->list);
6645                 kfree_rcu(ltk, rcu);
6646         } else {
6647                 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
6648         }
6649
6650         hci_dev_unlock(hdev);
6651
6652         return;
6653
6654 not_found:
6655         neg.handle = ev->handle;
6656         hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
6657         hci_dev_unlock(hdev);
6658 }
6659
6660 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
6661                                       u8 reason)
6662 {
6663         struct hci_cp_le_conn_param_req_neg_reply cp;
6664
6665         cp.handle = cpu_to_le16(handle);
6666         cp.reason = reason;
6667
6668         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
6669                      &cp);
6670 }
6671
6672 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
6673                                              struct sk_buff *skb)
6674 {
6675         struct hci_ev_le_remote_conn_param_req *ev = data;
6676         struct hci_cp_le_conn_param_req_reply cp;
6677         struct hci_conn *hcon;
6678         u16 handle, min, max, latency, timeout;
6679
6680         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6681
6682         handle = le16_to_cpu(ev->handle);
6683         min = le16_to_cpu(ev->interval_min);
6684         max = le16_to_cpu(ev->interval_max);
6685         latency = le16_to_cpu(ev->latency);
6686         timeout = le16_to_cpu(ev->timeout);
6687
6688         hcon = hci_conn_hash_lookup_handle(hdev, handle);
6689         if (!hcon || hcon->state != BT_CONNECTED)
6690                 return send_conn_param_neg_reply(hdev, handle,
6691                                                  HCI_ERROR_UNKNOWN_CONN_ID);
6692
6693         if (hci_check_conn_params(min, max, latency, timeout))
6694                 return send_conn_param_neg_reply(hdev, handle,
6695                                                  HCI_ERROR_INVALID_LL_PARAMS);
6696
6697         if (hcon->role == HCI_ROLE_MASTER) {
6698                 struct hci_conn_params *params;
6699                 u8 store_hint;
6700
6701                 hci_dev_lock(hdev);
6702
6703                 params = hci_conn_params_lookup(hdev, &hcon->dst,
6704                                                 hcon->dst_type);
6705                 if (params) {
6706                         params->conn_min_interval = min;
6707                         params->conn_max_interval = max;
6708                         params->conn_latency = latency;
6709                         params->supervision_timeout = timeout;
6710                         store_hint = 0x01;
6711                 } else {
6712                         store_hint = 0x00;
6713                 }
6714
6715                 hci_dev_unlock(hdev);
6716
6717                 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
6718                                     store_hint, min, max, latency, timeout);
6719         }
6720
6721         cp.handle = ev->handle;
6722         cp.interval_min = ev->interval_min;
6723         cp.interval_max = ev->interval_max;
6724         cp.latency = ev->latency;
6725         cp.timeout = ev->timeout;
6726         cp.min_ce_len = 0;
6727         cp.max_ce_len = 0;
6728
6729         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
6730 }
6731
6732 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
6733                                          struct sk_buff *skb)
6734 {
6735         struct hci_ev_le_direct_adv_report *ev = data;
6736         u64 instant = jiffies;
6737         int i;
6738
6739         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
6740                                 flex_array_size(ev, info, ev->num)))
6741                 return;
6742
6743         if (!ev->num)
6744                 return;
6745
6746         hci_dev_lock(hdev);
6747
6748         for (i = 0; i < ev->num; i++) {
6749                 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
6750
6751                 process_adv_report(hdev, info->type, &info->bdaddr,
6752                                    info->bdaddr_type, &info->direct_addr,
6753                                    info->direct_addr_type, info->rssi, NULL, 0,
6754                                    false, false, instant);
6755         }
6756
6757         hci_dev_unlock(hdev);
6758 }
6759
6760 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
6761                                   struct sk_buff *skb)
6762 {
6763         struct hci_ev_le_phy_update_complete *ev = data;
6764         struct hci_conn *conn;
6765
6766         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6767
6768         if (ev->status)
6769                 return;
6770
6771         hci_dev_lock(hdev);
6772
6773         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6774         if (!conn)
6775                 goto unlock;
6776
6777         conn->le_tx_phy = ev->tx_phy;
6778         conn->le_rx_phy = ev->rx_phy;
6779
6780 unlock:
6781         hci_dev_unlock(hdev);
6782 }
6783
6784 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
6785                                         struct sk_buff *skb)
6786 {
6787         struct hci_evt_le_cis_established *ev = data;
6788         struct hci_conn *conn;
6789         struct bt_iso_qos *qos;
6790         u16 handle = __le16_to_cpu(ev->handle);
6791
6792         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6793
6794         hci_dev_lock(hdev);
6795
6796         conn = hci_conn_hash_lookup_handle(hdev, handle);
6797         if (!conn) {
6798                 bt_dev_err(hdev,
6799                            "Unable to find connection with handle 0x%4.4x",
6800                            handle);
6801                 goto unlock;
6802         }
6803
6804         if (conn->type != ISO_LINK) {
6805                 bt_dev_err(hdev,
6806                            "Invalid connection link type handle 0x%4.4x",
6807                            handle);
6808                 goto unlock;
6809         }
6810
6811         qos = &conn->iso_qos;
6812
6813         /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */
6814         qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250;
6815         qos->ucast.out.interval = qos->ucast.in.interval;
6816
6817         switch (conn->role) {
6818         case HCI_ROLE_SLAVE:
6819                 /* Convert Transport Latency (us) to Latency (msec) */
6820                 qos->ucast.in.latency =
6821                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6822                                           1000);
6823                 qos->ucast.out.latency =
6824                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6825                                           1000);
6826                 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu);
6827                 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu);
6828                 qos->ucast.in.phy = ev->c_phy;
6829                 qos->ucast.out.phy = ev->p_phy;
6830                 break;
6831         case HCI_ROLE_MASTER:
6832                 /* Convert Transport Latency (us) to Latency (msec) */
6833                 qos->ucast.out.latency =
6834                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
6835                                           1000);
6836                 qos->ucast.in.latency =
6837                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
6838                                           1000);
6839                 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu);
6840                 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu);
6841                 qos->ucast.out.phy = ev->c_phy;
6842                 qos->ucast.in.phy = ev->p_phy;
6843                 break;
6844         }
6845
6846         if (!ev->status) {
6847                 conn->state = BT_CONNECTED;
6848                 hci_debugfs_create_conn(conn);
6849                 hci_conn_add_sysfs(conn);
6850                 hci_iso_setup_path(conn);
6851                 goto unlock;
6852         }
6853
6854         hci_connect_cfm(conn, ev->status);
6855         hci_conn_del(conn);
6856
6857 unlock:
6858         hci_dev_unlock(hdev);
6859 }
6860
6861 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
6862 {
6863         struct hci_cp_le_reject_cis cp;
6864
6865         memset(&cp, 0, sizeof(cp));
6866         cp.handle = handle;
6867         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
6868         hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
6869 }
6870
6871 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
6872 {
6873         struct hci_cp_le_accept_cis cp;
6874
6875         memset(&cp, 0, sizeof(cp));
6876         cp.handle = handle;
6877         hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
6878 }
6879
6880 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
6881                                struct sk_buff *skb)
6882 {
6883         struct hci_evt_le_cis_req *ev = data;
6884         u16 acl_handle, cis_handle;
6885         struct hci_conn *acl, *cis;
6886         int mask;
6887         __u8 flags = 0;
6888
6889         acl_handle = __le16_to_cpu(ev->acl_handle);
6890         cis_handle = __le16_to_cpu(ev->cis_handle);
6891
6892         bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
6893                    acl_handle, cis_handle, ev->cig_id, ev->cis_id);
6894
6895         hci_dev_lock(hdev);
6896
6897         acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
6898         if (!acl)
6899                 goto unlock;
6900
6901         mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
6902         if (!(mask & HCI_LM_ACCEPT)) {
6903                 hci_le_reject_cis(hdev, ev->cis_handle);
6904                 goto unlock;
6905         }
6906
6907         cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
6908         if (!cis) {
6909                 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE);
6910                 if (!cis) {
6911                         hci_le_reject_cis(hdev, ev->cis_handle);
6912                         goto unlock;
6913                 }
6914                 cis->handle = cis_handle;
6915         }
6916
6917         cis->iso_qos.ucast.cig = ev->cig_id;
6918         cis->iso_qos.ucast.cis = ev->cis_id;
6919
6920         if (!(flags & HCI_PROTO_DEFER)) {
6921                 hci_le_accept_cis(hdev, ev->cis_handle);
6922         } else {
6923                 cis->state = BT_CONNECT2;
6924                 hci_connect_cfm(cis, 0);
6925         }
6926
6927 unlock:
6928         hci_dev_unlock(hdev);
6929 }
6930
6931 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
6932                                            struct sk_buff *skb)
6933 {
6934         struct hci_evt_le_create_big_complete *ev = data;
6935         struct hci_conn *conn;
6936
6937         BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
6938
6939         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
6940                                 flex_array_size(ev, bis_handle, ev->num_bis)))
6941                 return;
6942
6943         hci_dev_lock(hdev);
6944
6945         conn = hci_conn_hash_lookup_big(hdev, ev->handle);
6946         if (!conn)
6947                 goto unlock;
6948
6949         if (conn->type != ISO_LINK) {
6950                 bt_dev_err(hdev,
6951                            "Invalid connection link type handle 0x%2.2x",
6952                            ev->handle);
6953                 goto unlock;
6954         }
6955
6956         if (ev->num_bis)
6957                 conn->handle = __le16_to_cpu(ev->bis_handle[0]);
6958
6959         if (!ev->status) {
6960                 conn->state = BT_CONNECTED;
6961                 hci_debugfs_create_conn(conn);
6962                 hci_conn_add_sysfs(conn);
6963                 hci_iso_setup_path(conn);
6964                 goto unlock;
6965         }
6966
6967         hci_connect_cfm(conn, ev->status);
6968         hci_conn_del(conn);
6969
6970 unlock:
6971         hci_dev_unlock(hdev);
6972 }
6973
6974 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
6975                                             struct sk_buff *skb)
6976 {
6977         struct hci_evt_le_big_sync_estabilished *ev = data;
6978         struct hci_conn *bis;
6979         int i;
6980
6981         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6982
6983         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
6984                                 flex_array_size(ev, bis, ev->num_bis)))
6985                 return;
6986
6987         if (ev->status)
6988                 return;
6989
6990         hci_dev_lock(hdev);
6991
6992         for (i = 0; i < ev->num_bis; i++) {
6993                 u16 handle = le16_to_cpu(ev->bis[i]);
6994                 __le32 interval;
6995
6996                 bis = hci_conn_hash_lookup_handle(hdev, handle);
6997                 if (!bis) {
6998                         bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
6999                                            HCI_ROLE_SLAVE);
7000                         if (!bis)
7001                                 continue;
7002                         bis->handle = handle;
7003                 }
7004
7005                 bis->iso_qos.bcast.big = ev->handle;
7006                 memset(&interval, 0, sizeof(interval));
7007                 memcpy(&interval, ev->latency, sizeof(ev->latency));
7008                 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval);
7009                 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7010                 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7011                 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
7012
7013                 hci_iso_setup_path(bis);
7014         }
7015
7016         hci_dev_unlock(hdev);
7017 }
7018
7019 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7020                                            struct sk_buff *skb)
7021 {
7022         struct hci_evt_le_big_info_adv_report *ev = data;
7023         int mask = hdev->link_mode;
7024         __u8 flags = 0;
7025
7026         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7027
7028         hci_dev_lock(hdev);
7029
7030         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7031         if (!(mask & HCI_LM_ACCEPT))
7032                 hci_le_pa_term_sync(hdev, ev->sync_handle);
7033
7034         hci_dev_unlock(hdev);
7035 }
7036
7037 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7038 [_op] = { \
7039         .func = _func, \
7040         .min_len = _min_len, \
7041         .max_len = _max_len, \
7042 }
7043
7044 #define HCI_LE_EV(_op, _func, _len) \
7045         HCI_LE_EV_VL(_op, _func, _len, _len)
7046
7047 #define HCI_LE_EV_STATUS(_op, _func) \
7048         HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7049
7050 /* Entries in this table shall have their position according to the subevent
7051  * opcode they handle so the use of the macros above is recommend since it does
7052  * attempt to initialize at its proper index using Designated Initializers that
7053  * way events without a callback function can be ommited.
7054  */
7055 static const struct hci_le_ev {
7056         void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7057         u16  min_len;
7058         u16  max_len;
7059 } hci_le_ev_table[U8_MAX + 1] = {
7060         /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7061         HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7062                   sizeof(struct hci_ev_le_conn_complete)),
7063         /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7064         HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7065                      sizeof(struct hci_ev_le_advertising_report),
7066                      HCI_MAX_EVENT_SIZE),
7067         /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7068         HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7069                   hci_le_conn_update_complete_evt,
7070                   sizeof(struct hci_ev_le_conn_update_complete)),
7071         /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7072         HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7073                   hci_le_remote_feat_complete_evt,
7074                   sizeof(struct hci_ev_le_remote_feat_complete)),
7075         /* [0x05 = HCI_EV_LE_LTK_REQ] */
7076         HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7077                   sizeof(struct hci_ev_le_ltk_req)),
7078         /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7079         HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7080                   hci_le_remote_conn_param_req_evt,
7081                   sizeof(struct hci_ev_le_remote_conn_param_req)),
7082         /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7083         HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7084                   hci_le_enh_conn_complete_evt,
7085                   sizeof(struct hci_ev_le_enh_conn_complete)),
7086         /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7087         HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7088                      sizeof(struct hci_ev_le_direct_adv_report),
7089                      HCI_MAX_EVENT_SIZE),
7090         /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7091         HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7092                   sizeof(struct hci_ev_le_phy_update_complete)),
7093         /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7094         HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7095                      sizeof(struct hci_ev_le_ext_adv_report),
7096                      HCI_MAX_EVENT_SIZE),
7097         /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7098         HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7099                   hci_le_pa_sync_estabilished_evt,
7100                   sizeof(struct hci_ev_le_pa_sync_established)),
7101         /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7102         HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7103                   sizeof(struct hci_evt_le_ext_adv_set_term)),
7104         /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7105         HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7106                   sizeof(struct hci_evt_le_cis_established)),
7107         /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7108         HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7109                   sizeof(struct hci_evt_le_cis_req)),
7110         /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7111         HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7112                      hci_le_create_big_complete_evt,
7113                      sizeof(struct hci_evt_le_create_big_complete),
7114                      HCI_MAX_EVENT_SIZE),
7115         /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7116         HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7117                      hci_le_big_sync_established_evt,
7118                      sizeof(struct hci_evt_le_big_sync_estabilished),
7119                      HCI_MAX_EVENT_SIZE),
7120         /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7121         HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7122                      hci_le_big_info_adv_report_evt,
7123                      sizeof(struct hci_evt_le_big_info_adv_report),
7124                      HCI_MAX_EVENT_SIZE),
7125 };
7126
7127 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7128                             struct sk_buff *skb, u16 *opcode, u8 *status,
7129                             hci_req_complete_t *req_complete,
7130                             hci_req_complete_skb_t *req_complete_skb)
7131 {
7132         struct hci_ev_le_meta *ev = data;
7133         const struct hci_le_ev *subev;
7134
7135         bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7136
7137         /* Only match event if command OGF is for LE */
7138         if (hdev->sent_cmd &&
7139             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7140             hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7141                 *opcode = hci_skb_opcode(hdev->sent_cmd);
7142                 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7143                                      req_complete_skb);
7144         }
7145
7146         subev = &hci_le_ev_table[ev->subevent];
7147         if (!subev->func)
7148                 return;
7149
7150         if (skb->len < subev->min_len) {
7151                 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7152                            ev->subevent, skb->len, subev->min_len);
7153                 return;
7154         }
7155
7156         /* Just warn if the length is over max_len size it still be
7157          * possible to partially parse the event so leave to callback to
7158          * decide if that is acceptable.
7159          */
7160         if (skb->len > subev->max_len)
7161                 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7162                             ev->subevent, skb->len, subev->max_len);
7163         data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7164         if (!data)
7165                 return;
7166
7167         subev->func(hdev, data, skb);
7168 }
7169
7170 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7171                                  u8 event, struct sk_buff *skb)
7172 {
7173         struct hci_ev_cmd_complete *ev;
7174         struct hci_event_hdr *hdr;
7175
7176         if (!skb)
7177                 return false;
7178
7179         hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7180         if (!hdr)
7181                 return false;
7182
7183         if (event) {
7184                 if (hdr->evt != event)
7185                         return false;
7186                 return true;
7187         }
7188
7189         /* Check if request ended in Command Status - no way to retrieve
7190          * any extra parameters in this case.
7191          */
7192         if (hdr->evt == HCI_EV_CMD_STATUS)
7193                 return false;
7194
7195         if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7196                 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7197                            hdr->evt);
7198                 return false;
7199         }
7200
7201         ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7202         if (!ev)
7203                 return false;
7204
7205         if (opcode != __le16_to_cpu(ev->opcode)) {
7206                 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7207                        __le16_to_cpu(ev->opcode));
7208                 return false;
7209         }
7210
7211         return true;
7212 }
7213
7214 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7215                                   struct sk_buff *skb)
7216 {
7217         struct hci_ev_le_advertising_info *adv;
7218         struct hci_ev_le_direct_adv_info *direct_adv;
7219         struct hci_ev_le_ext_adv_info *ext_adv;
7220         const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7221         const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7222
7223         hci_dev_lock(hdev);
7224
7225         /* If we are currently suspended and this is the first BT event seen,
7226          * save the wake reason associated with the event.
7227          */
7228         if (!hdev->suspended || hdev->wake_reason)
7229                 goto unlock;
7230
7231         /* Default to remote wake. Values for wake_reason are documented in the
7232          * Bluez mgmt api docs.
7233          */
7234         hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7235
7236         /* Once configured for remote wakeup, we should only wake up for
7237          * reconnections. It's useful to see which device is waking us up so
7238          * keep track of the bdaddr of the connection event that woke us up.
7239          */
7240         if (event == HCI_EV_CONN_REQUEST) {
7241                 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7242                 hdev->wake_addr_type = BDADDR_BREDR;
7243         } else if (event == HCI_EV_CONN_COMPLETE) {
7244                 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7245                 hdev->wake_addr_type = BDADDR_BREDR;
7246         } else if (event == HCI_EV_LE_META) {
7247                 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7248                 u8 subevent = le_ev->subevent;
7249                 u8 *ptr = &skb->data[sizeof(*le_ev)];
7250                 u8 num_reports = *ptr;
7251
7252                 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7253                      subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7254                      subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7255                     num_reports) {
7256                         adv = (void *)(ptr + 1);
7257                         direct_adv = (void *)(ptr + 1);
7258                         ext_adv = (void *)(ptr + 1);
7259
7260                         switch (subevent) {
7261                         case HCI_EV_LE_ADVERTISING_REPORT:
7262                                 bacpy(&hdev->wake_addr, &adv->bdaddr);
7263                                 hdev->wake_addr_type = adv->bdaddr_type;
7264                                 break;
7265                         case HCI_EV_LE_DIRECT_ADV_REPORT:
7266                                 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7267                                 hdev->wake_addr_type = direct_adv->bdaddr_type;
7268                                 break;
7269                         case HCI_EV_LE_EXT_ADV_REPORT:
7270                                 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7271                                 hdev->wake_addr_type = ext_adv->bdaddr_type;
7272                                 break;
7273                         }
7274                 }
7275         } else {
7276                 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7277         }
7278
7279 unlock:
7280         hci_dev_unlock(hdev);
7281 }
7282
7283 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7284 [_op] = { \
7285         .req = false, \
7286         .func = _func, \
7287         .min_len = _min_len, \
7288         .max_len = _max_len, \
7289 }
7290
7291 #define HCI_EV(_op, _func, _len) \
7292         HCI_EV_VL(_op, _func, _len, _len)
7293
7294 #define HCI_EV_STATUS(_op, _func) \
7295         HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7296
7297 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7298 [_op] = { \
7299         .req = true, \
7300         .func_req = _func, \
7301         .min_len = _min_len, \
7302         .max_len = _max_len, \
7303 }
7304
7305 #define HCI_EV_REQ(_op, _func, _len) \
7306         HCI_EV_REQ_VL(_op, _func, _len, _len)
7307
7308 /* Entries in this table shall have their position according to the event opcode
7309  * they handle so the use of the macros above is recommend since it does attempt
7310  * to initialize at its proper index using Designated Initializers that way
7311  * events without a callback function don't have entered.
7312  */
7313 static const struct hci_ev {
7314         bool req;
7315         union {
7316                 void (*func)(struct hci_dev *hdev, void *data,
7317                              struct sk_buff *skb);
7318                 void (*func_req)(struct hci_dev *hdev, void *data,
7319                                  struct sk_buff *skb, u16 *opcode, u8 *status,
7320                                  hci_req_complete_t *req_complete,
7321                                  hci_req_complete_skb_t *req_complete_skb);
7322         };
7323         u16  min_len;
7324         u16  max_len;
7325 } hci_ev_table[U8_MAX + 1] = {
7326         /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7327         HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7328         /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7329         HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7330                   sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7331         /* [0x03 = HCI_EV_CONN_COMPLETE] */
7332         HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7333                sizeof(struct hci_ev_conn_complete)),
7334         /* [0x04 = HCI_EV_CONN_REQUEST] */
7335         HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7336                sizeof(struct hci_ev_conn_request)),
7337         /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7338         HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7339                sizeof(struct hci_ev_disconn_complete)),
7340         /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7341         HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7342                sizeof(struct hci_ev_auth_complete)),
7343         /* [0x07 = HCI_EV_REMOTE_NAME] */
7344         HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7345                sizeof(struct hci_ev_remote_name)),
7346         /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7347         HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7348                sizeof(struct hci_ev_encrypt_change)),
7349         /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7350         HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7351                hci_change_link_key_complete_evt,
7352                sizeof(struct hci_ev_change_link_key_complete)),
7353         /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7354         HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7355                sizeof(struct hci_ev_remote_features)),
7356         /* [0x0e = HCI_EV_CMD_COMPLETE] */
7357         HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7358                       sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7359         /* [0x0f = HCI_EV_CMD_STATUS] */
7360         HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7361                    sizeof(struct hci_ev_cmd_status)),
7362         /* [0x10 = HCI_EV_CMD_STATUS] */
7363         HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7364                sizeof(struct hci_ev_hardware_error)),
7365         /* [0x12 = HCI_EV_ROLE_CHANGE] */
7366         HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7367                sizeof(struct hci_ev_role_change)),
7368         /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7369         HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7370                   sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7371         /* [0x14 = HCI_EV_MODE_CHANGE] */
7372         HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7373                sizeof(struct hci_ev_mode_change)),
7374         /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7375         HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7376                sizeof(struct hci_ev_pin_code_req)),
7377         /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7378         HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7379                sizeof(struct hci_ev_link_key_req)),
7380         /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7381         HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7382                sizeof(struct hci_ev_link_key_notify)),
7383         /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7384         HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7385                sizeof(struct hci_ev_clock_offset)),
7386         /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7387         HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7388                sizeof(struct hci_ev_pkt_type_change)),
7389         /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7390         HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7391                sizeof(struct hci_ev_pscan_rep_mode)),
7392         /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7393         HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7394                   hci_inquiry_result_with_rssi_evt,
7395                   sizeof(struct hci_ev_inquiry_result_rssi),
7396                   HCI_MAX_EVENT_SIZE),
7397         /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7398         HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7399                sizeof(struct hci_ev_remote_ext_features)),
7400         /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7401         HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7402                sizeof(struct hci_ev_sync_conn_complete)),
7403         /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7404         HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7405                   hci_extended_inquiry_result_evt,
7406                   sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7407         /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7408         HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7409                sizeof(struct hci_ev_key_refresh_complete)),
7410         /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7411         HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7412                sizeof(struct hci_ev_io_capa_request)),
7413         /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7414         HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7415                sizeof(struct hci_ev_io_capa_reply)),
7416         /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7417         HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7418                sizeof(struct hci_ev_user_confirm_req)),
7419         /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7420         HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7421                sizeof(struct hci_ev_user_passkey_req)),
7422         /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7423         HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7424                sizeof(struct hci_ev_remote_oob_data_request)),
7425         /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7426         HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7427                sizeof(struct hci_ev_simple_pair_complete)),
7428         /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7429         HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7430                sizeof(struct hci_ev_user_passkey_notify)),
7431         /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7432         HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7433                sizeof(struct hci_ev_keypress_notify)),
7434         /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7435         HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7436                sizeof(struct hci_ev_remote_host_features)),
7437         /* [0x3e = HCI_EV_LE_META] */
7438         HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7439                       sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7440 #if IS_ENABLED(CONFIG_BT_HS)
7441         /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7442         HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7443                sizeof(struct hci_ev_phy_link_complete)),
7444         /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7445         HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7446                sizeof(struct hci_ev_channel_selected)),
7447         /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7448         HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7449                hci_disconn_loglink_complete_evt,
7450                sizeof(struct hci_ev_disconn_logical_link_complete)),
7451         /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7452         HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7453                sizeof(struct hci_ev_logical_link_complete)),
7454         /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7455         HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7456                hci_disconn_phylink_complete_evt,
7457                sizeof(struct hci_ev_disconn_phy_link_complete)),
7458 #endif
7459         /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7460         HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7461                sizeof(struct hci_ev_num_comp_blocks)),
7462         /* [0xff = HCI_EV_VENDOR] */
7463         HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7464 };
7465
7466 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7467                            u16 *opcode, u8 *status,
7468                            hci_req_complete_t *req_complete,
7469                            hci_req_complete_skb_t *req_complete_skb)
7470 {
7471         const struct hci_ev *ev = &hci_ev_table[event];
7472         void *data;
7473
7474         if (!ev->func)
7475                 return;
7476
7477         if (skb->len < ev->min_len) {
7478                 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7479                            event, skb->len, ev->min_len);
7480                 return;
7481         }
7482
7483         /* Just warn if the length is over max_len size it still be
7484          * possible to partially parse the event so leave to callback to
7485          * decide if that is acceptable.
7486          */
7487         if (skb->len > ev->max_len)
7488                 bt_dev_warn_ratelimited(hdev,
7489                                         "unexpected event 0x%2.2x length: %u > %u",
7490                                         event, skb->len, ev->max_len);
7491
7492         data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7493         if (!data)
7494                 return;
7495
7496         if (ev->req)
7497                 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7498                              req_complete_skb);
7499         else
7500                 ev->func(hdev, data, skb);
7501 }
7502
7503 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7504 {
7505         struct hci_event_hdr *hdr = (void *) skb->data;
7506         hci_req_complete_t req_complete = NULL;
7507         hci_req_complete_skb_t req_complete_skb = NULL;
7508         struct sk_buff *orig_skb = NULL;
7509         u8 status = 0, event, req_evt = 0;
7510         u16 opcode = HCI_OP_NOP;
7511
7512         if (skb->len < sizeof(*hdr)) {
7513                 bt_dev_err(hdev, "Malformed HCI Event");
7514                 goto done;
7515         }
7516
7517         kfree_skb(hdev->recv_event);
7518         hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7519
7520         event = hdr->evt;
7521         if (!event) {
7522                 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7523                             event);
7524                 goto done;
7525         }
7526
7527         /* Only match event if command OGF is not for LE */
7528         if (hdev->sent_cmd &&
7529             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7530             hci_skb_event(hdev->sent_cmd) == event) {
7531                 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7532                                      status, &req_complete, &req_complete_skb);
7533                 req_evt = event;
7534         }
7535
7536         /* If it looks like we might end up having to call
7537          * req_complete_skb, store a pristine copy of the skb since the
7538          * various handlers may modify the original one through
7539          * skb_pull() calls, etc.
7540          */
7541         if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
7542             event == HCI_EV_CMD_COMPLETE)
7543                 orig_skb = skb_clone(skb, GFP_KERNEL);
7544
7545         skb_pull(skb, HCI_EVENT_HDR_SIZE);
7546
7547         /* Store wake reason if we're suspended */
7548         hci_store_wake_reason(hdev, event, skb);
7549
7550         bt_dev_dbg(hdev, "event 0x%2.2x", event);
7551
7552         hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
7553                        &req_complete_skb);
7554
7555         if (req_complete) {
7556                 req_complete(hdev, status, opcode);
7557         } else if (req_complete_skb) {
7558                 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
7559                         kfree_skb(orig_skb);
7560                         orig_skb = NULL;
7561                 }
7562                 req_complete_skb(hdev, status, opcode, orig_skb);
7563         }
7564
7565 done:
7566         kfree_skb(orig_skb);
7567         kfree_skb(skb);
7568         hdev->stat.evt_rx++;
7569 }