net/bluetooth/hci_event.c

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
   4    Copyright 2023 NXP
   5
   6    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License version 2 as
  10    published by the Free Software Foundation;
  11
  12    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  13    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  14    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  15    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  16    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  17    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  18    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  19    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  20
  21    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  22    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  23    SOFTWARE IS DISCLAIMED.
  24 */
  25
  26 /* Bluetooth HCI event handling. */
  27
  28 #include <asm/unaligned.h>
  29 #include <linux/crypto.h>
  30 #include <crypto/algapi.h>
  31
  32 #include <net/bluetooth/bluetooth.h>
  33 #include <net/bluetooth/hci_core.h>
  34 #include <net/bluetooth/mgmt.h>
  35
  36 #include "hci_request.h"
  37 #include "hci_debugfs.h"
  38 #include "hci_codec.h"
  39 #include "a2mp.h"
  40 #include "amp.h"
  41 #include "smp.h"
  42 #include "msft.h"
  43 #include "eir.h"
  44
  45 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
  46                  "\x00\x00\x00\x00\x00\x00\x00\x00"
  47
  48 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000)
  49
  50 /* Handle HCI Event packets */
  51
  52 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  53                              u8 ev, size_t len)
  54 {
  55         void *data;
  56
  57         data = skb_pull_data(skb, len);
  58         if (!data)
  59                 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev);
  60
  61         return data;
  62 }
  63
  64 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  65                              u16 op, size_t len)
  66 {
  67         void *data;
  68
  69         data = skb_pull_data(skb, len);
  70         if (!data)
  71                 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op);
  72
  73         return data;
  74 }
  75
  76 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb,
  77                                 u8 ev, size_t len)
  78 {
  79         void *data;
  80
  81         data = skb_pull_data(skb, len);
  82         if (!data)
  83                 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev);
  84
  85         return data;
  86 }
  87
  88 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data,
  89                                 struct sk_buff *skb)
  90 {
  91         struct hci_ev_status *rp = data;
  92
  93         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
  94
  95         /* It is possible that we receive Inquiry Complete event right
  96          * before we receive Inquiry Cancel Command Complete event, in
  97          * which case the latter event should have status of Command
  98          * Disallowed (0x0c). This should not be treated as error, since
  99          * we actually achieve what Inquiry Cancel wants to achieve,
 100          * which is to end the last Inquiry session.
 101          */
 102         if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) {
 103                 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command");
 104                 rp->status = 0x00;
 105         }
 106
 107         if (rp->status)
 108                 return rp->status;
 109
 110         clear_bit(HCI_INQUIRY, &hdev->flags);
 111         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
 112         wake_up_bit(&hdev->flags, HCI_INQUIRY);
 113
 114         hci_dev_lock(hdev);
 115         /* Set discovery state to stopped if we're not doing LE active
 116          * scanning.
 117          */
 118         if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
 119             hdev->le_scan_type != LE_SCAN_ACTIVE)
 120                 hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
 121         hci_dev_unlock(hdev);
 122
 123         hci_conn_check_pending(hdev);
 124
 125         return rp->status;
 126 }
 127
 128 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data,
 129                               struct sk_buff *skb)
 130 {
 131         struct hci_ev_status *rp = data;
 132
 133         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 134
 135         if (rp->status)
 136                 return rp->status;
 137
 138         hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
 139
 140         return rp->status;
 141 }
 142
 143 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data,
 144                                    struct sk_buff *skb)
 145 {
 146         struct hci_ev_status *rp = data;
 147
 148         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 149
 150         if (rp->status)
 151                 return rp->status;
 152
 153         hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
 154
 155         hci_conn_check_pending(hdev);
 156
 157         return rp->status;
 158 }
 159
 160 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data,
 161                                         struct sk_buff *skb)
 162 {
 163         struct hci_ev_status *rp = data;
 164
 165         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 166
 167         return rp->status;
 168 }
 169
 170 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data,
 171                                 struct sk_buff *skb)
 172 {
 173         struct hci_rp_role_discovery *rp = data;
 174         struct hci_conn *conn;
 175
 176         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 177
 178         if (rp->status)
 179                 return rp->status;
 180
 181         hci_dev_lock(hdev);
 182
 183         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 184         if (conn)
 185                 conn->role = rp->role;
 186
 187         hci_dev_unlock(hdev);
 188
 189         return rp->status;
 190 }
 191
 192 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data,
 193                                   struct sk_buff *skb)
 194 {
 195         struct hci_rp_read_link_policy *rp = data;
 196         struct hci_conn *conn;
 197
 198         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 199
 200         if (rp->status)
 201                 return rp->status;
 202
 203         hci_dev_lock(hdev);
 204
 205         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 206         if (conn)
 207                 conn->link_policy = __le16_to_cpu(rp->policy);
 208
 209         hci_dev_unlock(hdev);
 210
 211         return rp->status;
 212 }
 213
 214 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data,
 215                                    struct sk_buff *skb)
 216 {
 217         struct hci_rp_write_link_policy *rp = data;
 218         struct hci_conn *conn;
 219         void *sent;
 220 #ifdef TIZEN_BT
 221         struct hci_cp_write_link_policy cp;
 222         struct hci_conn *sco_conn;
 223 #endif
 224
 225         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 226
 227         if (rp->status)
 228                 return rp->status;
 229
 230         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
 231         if (!sent)
 232                 return rp->status;
 233
 234         hci_dev_lock(hdev);
 235
 236         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 237         if (conn)
 238                 conn->link_policy = get_unaligned_le16(sent + 2);
 239
 240 #ifdef TIZEN_BT
 241         sco_conn = hci_conn_hash_lookup_sco(hdev);
 242         if (sco_conn && bacmp(&sco_conn->dst, &conn->dst) == 0 &&
 243             conn->link_policy & HCI_LP_SNIFF) {
 244                 BT_ERR("SNIFF is not allowed during sco connection");
 245                 cp.handle = __cpu_to_le16(conn->handle);
 246                 cp.policy = __cpu_to_le16(conn->link_policy & ~HCI_LP_SNIFF);
 247                 hci_send_cmd(hdev, HCI_OP_WRITE_LINK_POLICY, sizeof(cp), &cp);
 248         }
 249 #endif
 250
 251         hci_dev_unlock(hdev);
 252
 253         return rp->status;
 254 }
 255
 256 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data,
 257                                       struct sk_buff *skb)
 258 {
 259         struct hci_rp_read_def_link_policy *rp = data;
 260
 261         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 262
 263         if (rp->status)
 264                 return rp->status;
 265
 266         hdev->link_policy = __le16_to_cpu(rp->policy);
 267
 268         return rp->status;
 269 }
 270
 271 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data,
 272                                        struct sk_buff *skb)
 273 {
 274         struct hci_ev_status *rp = data;
 275         void *sent;
 276
 277         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 278
 279         if (rp->status)
 280                 return rp->status;
 281
 282         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
 283         if (!sent)
 284                 return rp->status;
 285
 286         hdev->link_policy = get_unaligned_le16(sent);
 287
 288         return rp->status;
 289 }
 290
 291 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb)
 292 {
 293         struct hci_ev_status *rp = data;
 294
 295         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 296
 297         clear_bit(HCI_RESET, &hdev->flags);
 298
 299         if (rp->status)
 300                 return rp->status;
 301
 302         /* Reset all non-persistent flags */
 303         hci_dev_clear_volatile_flags(hdev);
 304
 305         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
 306
 307         hdev->inq_tx_power = HCI_TX_POWER_INVALID;
 308         hdev->adv_tx_power = HCI_TX_POWER_INVALID;
 309
 310         memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
 311         hdev->adv_data_len = 0;
 312
 313         memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
 314         hdev->scan_rsp_data_len = 0;
 315
 316         hdev->le_scan_type = LE_SCAN_PASSIVE;
 317
 318         hdev->ssp_debug_mode = 0;
 319
 320         hci_bdaddr_list_clear(&hdev->le_accept_list);
 321         hci_bdaddr_list_clear(&hdev->le_resolv_list);
 322
 323         return rp->status;
 324 }
 325
 326 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data,
 327                                       struct sk_buff *skb)
 328 {
 329         struct hci_rp_read_stored_link_key *rp = data;
 330         struct hci_cp_read_stored_link_key *sent;
 331
 332         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 333
 334         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
 335         if (!sent)
 336                 return rp->status;
 337
 338         if (!rp->status && sent->read_all == 0x01) {
 339                 hdev->stored_max_keys = le16_to_cpu(rp->max_keys);
 340                 hdev->stored_num_keys = le16_to_cpu(rp->num_keys);
 341         }
 342
 343         return rp->status;
 344 }
 345
 346 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data,
 347                                         struct sk_buff *skb)
 348 {
 349         struct hci_rp_delete_stored_link_key *rp = data;
 350         u16 num_keys;
 351
 352         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 353
 354         if (rp->status)
 355                 return rp->status;
 356
 357         num_keys = le16_to_cpu(rp->num_keys);
 358
 359         if (num_keys <= hdev->stored_num_keys)
 360                 hdev->stored_num_keys -= num_keys;
 361         else
 362                 hdev->stored_num_keys = 0;
 363
 364         return rp->status;
 365 }
 366
 367 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data,
 368                                   struct sk_buff *skb)
 369 {
 370         struct hci_ev_status *rp = data;
 371         void *sent;
 372
 373         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 374
 375         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
 376         if (!sent)
 377                 return rp->status;
 378
 379         hci_dev_lock(hdev);
 380
 381         if (hci_dev_test_flag(hdev, HCI_MGMT))
 382                 mgmt_set_local_name_complete(hdev, sent, rp->status);
 383         else if (!rp->status)
 384                 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
 385
 386         hci_dev_unlock(hdev);
 387
 388         return rp->status;
 389 }
 390
 391 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data,
 392                                  struct sk_buff *skb)
 393 {
 394         struct hci_rp_read_local_name *rp = data;
 395
 396         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 397
 398         if (rp->status)
 399                 return rp->status;
 400
 401         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 402             hci_dev_test_flag(hdev, HCI_CONFIG))
 403                 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
 404
 405         return rp->status;
 406 }
 407
 408 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data,
 409                                    struct sk_buff *skb)
 410 {
 411         struct hci_ev_status *rp = data;
 412         void *sent;
 413
 414         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 415
 416         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
 417         if (!sent)
 418                 return rp->status;
 419
 420         hci_dev_lock(hdev);
 421
 422         if (!rp->status) {
 423                 __u8 param = *((__u8 *) sent);
 424
 425                 if (param == AUTH_ENABLED)
 426                         set_bit(HCI_AUTH, &hdev->flags);
 427                 else
 428                         clear_bit(HCI_AUTH, &hdev->flags);
 429         }
 430
 431         if (hci_dev_test_flag(hdev, HCI_MGMT))
 432                 mgmt_auth_enable_complete(hdev, rp->status);
 433
 434         hci_dev_unlock(hdev);
 435
 436         return rp->status;
 437 }
 438
 439 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data,
 440                                     struct sk_buff *skb)
 441 {
 442         struct hci_ev_status *rp = data;
 443         __u8 param;
 444         void *sent;
 445
 446         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 447
 448         if (rp->status)
 449                 return rp->status;
 450
 451         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
 452         if (!sent)
 453                 return rp->status;
 454
 455         param = *((__u8 *) sent);
 456
 457         if (param)
 458                 set_bit(HCI_ENCRYPT, &hdev->flags);
 459         else
 460                 clear_bit(HCI_ENCRYPT, &hdev->flags);
 461
 462         return rp->status;
 463 }
 464
 465 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data,
 466                                    struct sk_buff *skb)
 467 {
 468         struct hci_ev_status *rp = data;
 469         __u8 param;
 470         void *sent;
 471
 472         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 473
 474         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
 475         if (!sent)
 476                 return rp->status;
 477
 478         param = *((__u8 *) sent);
 479
 480         hci_dev_lock(hdev);
 481
 482         if (rp->status) {
 483                 hdev->discov_timeout = 0;
 484                 goto done;
 485         }
 486
 487         if (param & SCAN_INQUIRY)
 488                 set_bit(HCI_ISCAN, &hdev->flags);
 489         else
 490                 clear_bit(HCI_ISCAN, &hdev->flags);
 491
 492         if (param & SCAN_PAGE)
 493                 set_bit(HCI_PSCAN, &hdev->flags);
 494         else
 495                 clear_bit(HCI_PSCAN, &hdev->flags);
 496
 497 done:
 498         hci_dev_unlock(hdev);
 499
 500         return rp->status;
 501 }
 502
 503 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data,
 504                                   struct sk_buff *skb)
 505 {
 506         struct hci_ev_status *rp = data;
 507         struct hci_cp_set_event_filter *cp;
 508         void *sent;
 509
 510         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 511
 512         if (rp->status)
 513                 return rp->status;
 514
 515         sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT);
 516         if (!sent)
 517                 return rp->status;
 518
 519         cp = (struct hci_cp_set_event_filter *)sent;
 520
 521         if (cp->flt_type == HCI_FLT_CLEAR_ALL)
 522                 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
 523         else
 524                 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED);
 525
 526         return rp->status;
 527 }
 528
 529 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data,
 530                                    struct sk_buff *skb)
 531 {
 532         struct hci_rp_read_class_of_dev *rp = data;
 533
 534         if (WARN_ON(!hdev))
 535                 return HCI_ERROR_UNSPECIFIED;
 536
 537         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 538
 539         if (rp->status)
 540                 return rp->status;
 541
 542         memcpy(hdev->dev_class, rp->dev_class, 3);
 543
 544         bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2],
 545                    hdev->dev_class[1], hdev->dev_class[0]);
 546
 547         return rp->status;
 548 }
 549
 550 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data,
 551                                     struct sk_buff *skb)
 552 {
 553         struct hci_ev_status *rp = data;
 554         void *sent;
 555
 556         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 557
 558         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
 559         if (!sent)
 560                 return rp->status;
 561
 562         hci_dev_lock(hdev);
 563
 564         if (!rp->status)
 565                 memcpy(hdev->dev_class, sent, 3);
 566
 567         if (hci_dev_test_flag(hdev, HCI_MGMT))
 568                 mgmt_set_class_of_dev_complete(hdev, sent, rp->status);
 569
 570         hci_dev_unlock(hdev);
 571
 572         return rp->status;
 573 }
 574
 575 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data,
 576                                     struct sk_buff *skb)
 577 {
 578         struct hci_rp_read_voice_setting *rp = data;
 579         __u16 setting;
 580
 581         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 582
 583         if (rp->status)
 584                 return rp->status;
 585
 586         setting = __le16_to_cpu(rp->voice_setting);
 587
 588         if (hdev->voice_setting == setting)
 589                 return rp->status;
 590
 591         hdev->voice_setting = setting;
 592
 593         bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
 594
 595         if (hdev->notify)
 596                 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
 597
 598         return rp->status;
 599 }
 600
 601 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data,
 602                                      struct sk_buff *skb)
 603 {
 604         struct hci_ev_status *rp = data;
 605         __u16 setting;
 606         void *sent;
 607
 608         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 609
 610         if (rp->status)
 611                 return rp->status;
 612
 613         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
 614         if (!sent)
 615                 return rp->status;
 616
 617         setting = get_unaligned_le16(sent);
 618
 619         if (hdev->voice_setting == setting)
 620                 return rp->status;
 621
 622         hdev->voice_setting = setting;
 623
 624         bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting);
 625
 626         if (hdev->notify)
 627                 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
 628
 629         return rp->status;
 630 }
 631
 632 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data,
 633                                         struct sk_buff *skb)
 634 {
 635         struct hci_rp_read_num_supported_iac *rp = data;
 636
 637         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 638
 639         if (rp->status)
 640                 return rp->status;
 641
 642         hdev->num_iac = rp->num_iac;
 643
 644         bt_dev_dbg(hdev, "num iac %d", hdev->num_iac);
 645
 646         return rp->status;
 647 }
 648
 649 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data,
 650                                 struct sk_buff *skb)
 651 {
 652         struct hci_ev_status *rp = data;
 653         struct hci_cp_write_ssp_mode *sent;
 654
 655         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 656
 657         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
 658         if (!sent)
 659                 return rp->status;
 660
 661         hci_dev_lock(hdev);
 662
 663         if (!rp->status) {
 664                 if (sent->mode)
 665                         hdev->features[1][0] |= LMP_HOST_SSP;
 666                 else
 667                         hdev->features[1][0] &= ~LMP_HOST_SSP;
 668         }
 669
 670         if (!rp->status) {
 671                 if (sent->mode)
 672                         hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
 673                 else
 674                         hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
 675         }
 676
 677         hci_dev_unlock(hdev);
 678
 679         return rp->status;
 680 }
 681
 682 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data,
 683                                   struct sk_buff *skb)
 684 {
 685         struct hci_ev_status *rp = data;
 686         struct hci_cp_write_sc_support *sent;
 687
 688         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 689
 690         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
 691         if (!sent)
 692                 return rp->status;
 693
 694         hci_dev_lock(hdev);
 695
 696         if (!rp->status) {
 697                 if (sent->support)
 698                         hdev->features[1][0] |= LMP_HOST_SC;
 699                 else
 700                         hdev->features[1][0] &= ~LMP_HOST_SC;
 701         }
 702
 703         if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) {
 704                 if (sent->support)
 705                         hci_dev_set_flag(hdev, HCI_SC_ENABLED);
 706                 else
 707                         hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
 708         }
 709
 710         hci_dev_unlock(hdev);
 711
 712         return rp->status;
 713 }
 714
 715 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data,
 716                                     struct sk_buff *skb)
 717 {
 718         struct hci_rp_read_local_version *rp = data;
 719
 720         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 721
 722         if (rp->status)
 723                 return rp->status;
 724
 725         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 726             hci_dev_test_flag(hdev, HCI_CONFIG)) {
 727                 hdev->hci_ver = rp->hci_ver;
 728                 hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
 729                 hdev->lmp_ver = rp->lmp_ver;
 730                 hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
 731                 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
 732         }
 733
 734         return rp->status;
 735 }
 736
 737 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data,
 738                                    struct sk_buff *skb)
 739 {
 740         struct hci_rp_read_enc_key_size *rp = data;
 741         struct hci_conn *conn;
 742         u16 handle;
 743         u8 status = rp->status;
 744
 745         bt_dev_dbg(hdev, "status 0x%2.2x", status);
 746
 747         handle = le16_to_cpu(rp->handle);
 748
 749         hci_dev_lock(hdev);
 750
 751         conn = hci_conn_hash_lookup_handle(hdev, handle);
 752         if (!conn) {
 753                 status = 0xFF;
 754                 goto done;
 755         }
 756
 757         /* While unexpected, the read_enc_key_size command may fail. The most
 758          * secure approach is to then assume the key size is 0 to force a
 759          * disconnection.
 760          */
 761         if (status) {
 762                 bt_dev_err(hdev, "failed to read key size for handle %u",
 763                            handle);
 764                 conn->enc_key_size = 0;
 765         } else {
 766                 conn->enc_key_size = rp->key_size;
 767                 status = 0;
 768
 769                 if (conn->enc_key_size < hdev->min_enc_key_size) {
 770                         /* As slave role, the conn->state has been set to
 771                          * BT_CONNECTED and l2cap conn req might not be received
 772                          * yet, at this moment the l2cap layer almost does
 773                          * nothing with the non-zero status.
 774                          * So we also clear encrypt related bits, and then the
 775                          * handler of l2cap conn req will get the right secure
 776                          * state at a later time.
 777                          */
 778                         status = HCI_ERROR_AUTH_FAILURE;
 779                         clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
 780                         clear_bit(HCI_CONN_AES_CCM, &conn->flags);
 781                 }
 782         }
 783
 784         hci_encrypt_cfm(conn, status);
 785
 786 done:
 787         hci_dev_unlock(hdev);
 788
 789         return status;
 790 }
 791
 792 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data,
 793                                      struct sk_buff *skb)
 794 {
 795         struct hci_rp_read_local_commands *rp = data;
 796
 797         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 798
 799         if (rp->status)
 800                 return rp->status;
 801
 802         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
 803             hci_dev_test_flag(hdev, HCI_CONFIG))
 804                 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
 805
 806         return rp->status;
 807 }
 808
 809 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data,
 810                                            struct sk_buff *skb)
 811 {
 812         struct hci_rp_read_auth_payload_to *rp = data;
 813         struct hci_conn *conn;
 814
 815         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 816
 817         if (rp->status)
 818                 return rp->status;
 819
 820         hci_dev_lock(hdev);
 821
 822         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 823         if (conn)
 824                 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout);
 825
 826         hci_dev_unlock(hdev);
 827
 828         return rp->status;
 829 }
 830
 831 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data,
 832                                             struct sk_buff *skb)
 833 {
 834         struct hci_rp_write_auth_payload_to *rp = data;
 835         struct hci_conn *conn;
 836         void *sent;
 837
 838         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 839
 840         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO);
 841         if (!sent)
 842                 return rp->status;
 843
 844         hci_dev_lock(hdev);
 845
 846         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
 847         if (!conn) {
 848                 rp->status = 0xff;
 849                 goto unlock;
 850         }
 851
 852         if (!rp->status)
 853                 conn->auth_payload_timeout = get_unaligned_le16(sent + 2);
 854
 855 unlock:
 856         hci_dev_unlock(hdev);
 857
 858         return rp->status;
 859 }
 860
 861 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data,
 862                                      struct sk_buff *skb)
 863 {
 864         struct hci_rp_read_local_features *rp = data;
 865
 866         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 867
 868         if (rp->status)
 869                 return rp->status;
 870
 871         memcpy(hdev->features, rp->features, 8);
 872
 873         /* Adjust default settings according to features
 874          * supported by device. */
 875
 876         if (hdev->features[0][0] & LMP_3SLOT)
 877                 hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
 878
 879         if (hdev->features[0][0] & LMP_5SLOT)
 880                 hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
 881
 882         if (hdev->features[0][1] & LMP_HV2) {
 883                 hdev->pkt_type  |= (HCI_HV2);
 884                 hdev->esco_type |= (ESCO_HV2);
 885         }
 886
 887         if (hdev->features[0][1] & LMP_HV3) {
 888                 hdev->pkt_type  |= (HCI_HV3);
 889                 hdev->esco_type |= (ESCO_HV3);
 890         }
 891
 892         if (lmp_esco_capable(hdev))
 893                 hdev->esco_type |= (ESCO_EV3);
 894
 895         if (hdev->features[0][4] & LMP_EV4)
 896                 hdev->esco_type |= (ESCO_EV4);
 897
 898         if (hdev->features[0][4] & LMP_EV5)
 899                 hdev->esco_type |= (ESCO_EV5);
 900
 901         if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
 902                 hdev->esco_type |= (ESCO_2EV3);
 903
 904         if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
 905                 hdev->esco_type |= (ESCO_3EV3);
 906
 907         if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
 908                 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
 909
 910         return rp->status;
 911 }
 912
 913 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
 914                                          struct sk_buff *skb)
 915 {
 916         struct hci_rp_read_local_ext_features *rp = data;
 917
 918         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 919
 920         if (rp->status)
 921                 return rp->status;
 922
 923         if (hdev->max_page < rp->max_page) {
 924                 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
 925                              &hdev->quirks))
 926                         bt_dev_warn(hdev, "broken local ext features page 2");
 927                 else
 928                         hdev->max_page = rp->max_page;
 929         }
 930
 931         if (rp->page < HCI_MAX_PAGES)
 932                 memcpy(hdev->features[rp->page], rp->features, 8);
 933
 934         return rp->status;
 935 }
 936
 937 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data,
 938                                         struct sk_buff *skb)
 939 {
 940         struct hci_rp_read_flow_control_mode *rp = data;
 941
 942         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 943
 944         if (rp->status)
 945                 return rp->status;
 946
 947         hdev->flow_ctl_mode = rp->mode;
 948
 949         return rp->status;
 950 }
 951
 952 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data,
 953                                   struct sk_buff *skb)
 954 {
 955         struct hci_rp_read_buffer_size *rp = data;
 956
 957         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 958
 959         if (rp->status)
 960                 return rp->status;
 961
 962         hdev->acl_mtu  = __le16_to_cpu(rp->acl_mtu);
 963         hdev->sco_mtu  = rp->sco_mtu;
 964         hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
 965         hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);
 966
 967         if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
 968                 hdev->sco_mtu  = 64;
 969                 hdev->sco_pkts = 8;
 970         }
 971
 972         hdev->acl_cnt = hdev->acl_pkts;
 973         hdev->sco_cnt = hdev->sco_pkts;
 974
 975         BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
 976                hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
 977
 978         return rp->status;
 979 }
 980
 981 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data,
 982                               struct sk_buff *skb)
 983 {
 984         struct hci_rp_read_bd_addr *rp = data;
 985
 986         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 987
 988         if (rp->status)
 989                 return rp->status;
 990
 991         if (test_bit(HCI_INIT, &hdev->flags))
 992                 bacpy(&hdev->bdaddr, &rp->bdaddr);
 993
 994         if (hci_dev_test_flag(hdev, HCI_SETUP))
 995                 bacpy(&hdev->setup_addr, &rp->bdaddr);
 996
 997         return rp->status;
 998 }
 999
1000 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data,
1001                                          struct sk_buff *skb)
1002 {
1003         struct hci_rp_read_local_pairing_opts *rp = data;
1004
1005         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1006
1007         if (rp->status)
1008                 return rp->status;
1009
1010         if (hci_dev_test_flag(hdev, HCI_SETUP) ||
1011             hci_dev_test_flag(hdev, HCI_CONFIG)) {
1012                 hdev->pairing_opts = rp->pairing_opts;
1013                 hdev->max_enc_key_size = rp->max_key_size;
1014         }
1015
1016         return rp->status;
1017 }
1018
1019 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data,
1020                                          struct sk_buff *skb)
1021 {
1022         struct hci_rp_read_page_scan_activity *rp = data;
1023
1024         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1025
1026         if (rp->status)
1027                 return rp->status;
1028
1029         if (test_bit(HCI_INIT, &hdev->flags)) {
1030                 hdev->page_scan_interval = __le16_to_cpu(rp->interval);
1031                 hdev->page_scan_window = __le16_to_cpu(rp->window);
1032         }
1033
1034         return rp->status;
1035 }
1036
1037 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data,
1038                                           struct sk_buff *skb)
1039 {
1040         struct hci_ev_status *rp = data;
1041         struct hci_cp_write_page_scan_activity *sent;
1042
1043         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1044
1045         if (rp->status)
1046                 return rp->status;
1047
1048         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
1049         if (!sent)
1050                 return rp->status;
1051
1052         hdev->page_scan_interval = __le16_to_cpu(sent->interval);
1053         hdev->page_scan_window = __le16_to_cpu(sent->window);
1054
1055         return rp->status;
1056 }
1057
1058 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data,
1059                                      struct sk_buff *skb)
1060 {
1061         struct hci_rp_read_page_scan_type *rp = data;
1062
1063         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1064
1065         if (rp->status)
1066                 return rp->status;
1067
1068         if (test_bit(HCI_INIT, &hdev->flags))
1069                 hdev->page_scan_type = rp->type;
1070
1071         return rp->status;
1072 }
1073
1074 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data,
1075                                       struct sk_buff *skb)
1076 {
1077         struct hci_ev_status *rp = data;
1078         u8 *type;
1079
1080         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1081
1082         if (rp->status)
1083                 return rp->status;
1084
1085         type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
1086         if (type)
1087                 hdev->page_scan_type = *type;
1088
1089         return rp->status;
1090 }
1091
1092 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data,
1093                                       struct sk_buff *skb)
1094 {
1095         struct hci_rp_read_data_block_size *rp = data;
1096
1097         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1098
1099         if (rp->status)
1100                 return rp->status;
1101
1102         hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
1103         hdev->block_len = __le16_to_cpu(rp->block_len);
1104         hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
1105
1106         hdev->block_cnt = hdev->num_blocks;
1107
1108         BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
1109                hdev->block_cnt, hdev->block_len);
1110
1111         return rp->status;
1112 }
1113
1114 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data,
1115                             struct sk_buff *skb)
1116 {
1117         struct hci_rp_read_clock *rp = data;
1118         struct hci_cp_read_clock *cp;
1119         struct hci_conn *conn;
1120
1121         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1122
1123         if (rp->status)
1124                 return rp->status;
1125
1126         hci_dev_lock(hdev);
1127
1128         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
1129         if (!cp)
1130                 goto unlock;
1131
1132         if (cp->which == 0x00) {
1133                 hdev->clock = le32_to_cpu(rp->clock);
1134                 goto unlock;
1135         }
1136
1137         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1138         if (conn) {
1139                 conn->clock = le32_to_cpu(rp->clock);
1140                 conn->clock_accuracy = le16_to_cpu(rp->accuracy);
1141         }
1142
1143 unlock:
1144         hci_dev_unlock(hdev);
1145         return rp->status;
1146 }
1147
1148 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data,
1149                                      struct sk_buff *skb)
1150 {
1151         struct hci_rp_read_local_amp_info *rp = data;
1152
1153         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1154
1155         if (rp->status)
1156                 return rp->status;
1157
1158         hdev->amp_status = rp->amp_status;
1159         hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
1160         hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
1161         hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
1162         hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
1163         hdev->amp_type = rp->amp_type;
1164         hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
1165         hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
1166         hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
1167         hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);
1168
1169         return rp->status;
1170 }
1171
1172 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data,
1173                                        struct sk_buff *skb)
1174 {
1175         struct hci_rp_read_inq_rsp_tx_power *rp = data;
1176
1177         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1178
1179         if (rp->status)
1180                 return rp->status;
1181
1182         hdev->inq_tx_power = rp->tx_power;
1183
1184         return rp->status;
1185 }
1186
1187 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data,
1188                                              struct sk_buff *skb)
1189 {
1190         struct hci_rp_read_def_err_data_reporting *rp = data;
1191
1192         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1193
1194         if (rp->status)
1195                 return rp->status;
1196
1197         hdev->err_data_reporting = rp->err_data_reporting;
1198
1199         return rp->status;
1200 }
1201
1202 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data,
1203                                               struct sk_buff *skb)
1204 {
1205         struct hci_ev_status *rp = data;
1206         struct hci_cp_write_def_err_data_reporting *cp;
1207
1208         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1209
1210         if (rp->status)
1211                 return rp->status;
1212
1213         cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING);
1214         if (!cp)
1215                 return rp->status;
1216
1217         hdev->err_data_reporting = cp->err_data_reporting;
1218
1219         return rp->status;
1220 }
1221
1222 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data,
1223                                 struct sk_buff *skb)
1224 {
1225         struct hci_rp_pin_code_reply *rp = data;
1226         struct hci_cp_pin_code_reply *cp;
1227         struct hci_conn *conn;
1228
1229         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1230
1231         hci_dev_lock(hdev);
1232
1233         if (hci_dev_test_flag(hdev, HCI_MGMT))
1234                 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
1235
1236         if (rp->status)
1237                 goto unlock;
1238
1239         cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
1240         if (!cp)
1241                 goto unlock;
1242
1243         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
1244         if (conn)
1245                 conn->pin_length = cp->pin_len;
1246
1247 unlock:
1248         hci_dev_unlock(hdev);
1249         return rp->status;
1250 }
1251
1252 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data,
1253                                     struct sk_buff *skb)
1254 {
1255         struct hci_rp_pin_code_neg_reply *rp = data;
1256
1257         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1258
1259         hci_dev_lock(hdev);
1260
1261         if (hci_dev_test_flag(hdev, HCI_MGMT))
1262                 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
1263                                                  rp->status);
1264
1265         hci_dev_unlock(hdev);
1266
1267         return rp->status;
1268 }
1269
1270 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data,
1271                                      struct sk_buff *skb)
1272 {
1273         struct hci_rp_le_read_buffer_size *rp = data;
1274
1275         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1276
1277         if (rp->status)
1278                 return rp->status;
1279
1280         hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
1281         hdev->le_pkts = rp->le_max_pkt;
1282
1283         hdev->le_cnt = hdev->le_pkts;
1284
1285         BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
1286
1287         return rp->status;
1288 }
1289
1290 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data,
1291                                         struct sk_buff *skb)
1292 {
1293         struct hci_rp_le_read_local_features *rp = data;
1294
1295         BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1296
1297         if (rp->status)
1298                 return rp->status;
1299
1300         memcpy(hdev->le_features, rp->features, 8);
1301
1302         return rp->status;
1303 }
1304
1305 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data,
1306                                       struct sk_buff *skb)
1307 {
1308         struct hci_rp_le_read_adv_tx_power *rp = data;
1309
1310         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1311
1312         if (rp->status)
1313                 return rp->status;
1314
1315         hdev->adv_tx_power = rp->tx_power;
1316
1317         return rp->status;
1318 }
1319
1320 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data,
1321                                     struct sk_buff *skb)
1322 {
1323         struct hci_rp_user_confirm_reply *rp = data;
1324
1325         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1326
1327         hci_dev_lock(hdev);
1328
1329         if (hci_dev_test_flag(hdev, HCI_MGMT))
1330                 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
1331                                                  rp->status);
1332
1333         hci_dev_unlock(hdev);
1334
1335         return rp->status;
1336 }
1337
1338 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data,
1339                                         struct sk_buff *skb)
1340 {
1341         struct hci_rp_user_confirm_reply *rp = data;
1342
1343         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1344
1345         hci_dev_lock(hdev);
1346
1347         if (hci_dev_test_flag(hdev, HCI_MGMT))
1348                 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1349                                                      ACL_LINK, 0, rp->status);
1350
1351         hci_dev_unlock(hdev);
1352
1353         return rp->status;
1354 }
1355
1356 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data,
1357                                     struct sk_buff *skb)
1358 {
1359         struct hci_rp_user_confirm_reply *rp = data;
1360
1361         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1362
1363         hci_dev_lock(hdev);
1364
1365         if (hci_dev_test_flag(hdev, HCI_MGMT))
1366                 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1367                                                  0, rp->status);
1368
1369         hci_dev_unlock(hdev);
1370
1371         return rp->status;
1372 }
1373
1374 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data,
1375                                         struct sk_buff *skb)
1376 {
1377         struct hci_rp_user_confirm_reply *rp = data;
1378
1379         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1380
1381         hci_dev_lock(hdev);
1382
1383         if (hci_dev_test_flag(hdev, HCI_MGMT))
1384                 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1385                                                      ACL_LINK, 0, rp->status);
1386
1387         hci_dev_unlock(hdev);
1388
1389         return rp->status;
1390 }
1391
1392 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data,
1393                                      struct sk_buff *skb)
1394 {
1395         struct hci_rp_read_local_oob_data *rp = data;
1396
1397         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1398
1399         return rp->status;
1400 }
1401
1402 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data,
1403                                          struct sk_buff *skb)
1404 {
1405         struct hci_rp_read_local_oob_ext_data *rp = data;
1406
1407         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1408
1409         return rp->status;
1410 }
1411
1412 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data,
1413                                     struct sk_buff *skb)
1414 {
1415         struct hci_ev_status *rp = data;
1416         bdaddr_t *sent;
1417
1418         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1419
1420         if (rp->status)
1421                 return rp->status;
1422
1423         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
1424         if (!sent)
1425                 return rp->status;
1426
1427         hci_dev_lock(hdev);
1428
1429         bacpy(&hdev->random_addr, sent);
1430
1431         if (!bacmp(&hdev->rpa, sent)) {
1432                 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
1433                 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired,
1434                                    secs_to_jiffies(hdev->rpa_timeout));
1435         }
1436
1437         hci_dev_unlock(hdev);
1438
1439         return rp->status;
1440 }
1441
1442 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data,
1443                                     struct sk_buff *skb)
1444 {
1445         struct hci_ev_status *rp = data;
1446         struct hci_cp_le_set_default_phy *cp;
1447
1448         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1449
1450         if (rp->status)
1451                 return rp->status;
1452
1453         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY);
1454         if (!cp)
1455                 return rp->status;
1456
1457         hci_dev_lock(hdev);
1458
1459         hdev->le_tx_def_phys = cp->tx_phys;
1460         hdev->le_rx_def_phys = cp->rx_phys;
1461
1462         hci_dev_unlock(hdev);
1463
1464         return rp->status;
1465 }
1466
1467 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data,
1468                                             struct sk_buff *skb)
1469 {
1470         struct hci_ev_status *rp = data;
1471         struct hci_cp_le_set_adv_set_rand_addr *cp;
1472         struct adv_info *adv;
1473
1474         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1475
1476         if (rp->status)
1477                 return rp->status;
1478
1479         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
1480         /* Update only in case the adv instance since handle 0x00 shall be using
1481          * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
1482          * non-extended adverting.
1483          */
1484         if (!cp || !cp->handle)
1485                 return rp->status;
1486
1487         hci_dev_lock(hdev);
1488
1489         adv = hci_find_adv_instance(hdev, cp->handle);
1490         if (adv) {
1491                 bacpy(&adv->random_addr, &cp->bdaddr);
1492                 if (!bacmp(&hdev->rpa, &cp->bdaddr)) {
1493                         adv->rpa_expired = false;
1494                         queue_delayed_work(hdev->workqueue,
1495                                            &adv->rpa_expired_cb,
1496                                            secs_to_jiffies(hdev->rpa_timeout));
1497                 }
1498         }
1499
1500         hci_dev_unlock(hdev);
1501
1502         return rp->status;
1503 }
1504
1505 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data,
1506                                    struct sk_buff *skb)
1507 {
1508         struct hci_ev_status *rp = data;
1509         u8 *instance;
1510         int err;
1511
1512         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1513
1514         if (rp->status)
1515                 return rp->status;
1516
1517         instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET);
1518         if (!instance)
1519                 return rp->status;
1520
1521         hci_dev_lock(hdev);
1522
1523         err = hci_remove_adv_instance(hdev, *instance);
1524         if (!err)
1525                 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev,
1526                                          *instance);
1527
1528         hci_dev_unlock(hdev);
1529
1530         return rp->status;
1531 }
1532
1533 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data,
1534                                    struct sk_buff *skb)
1535 {
1536         struct hci_ev_status *rp = data;
1537         struct adv_info *adv, *n;
1538         int err;
1539
1540         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1541
1542         if (rp->status)
1543                 return rp->status;
1544
1545         if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS))
1546                 return rp->status;
1547
1548         hci_dev_lock(hdev);
1549
1550         list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
1551                 u8 instance = adv->instance;
1552
1553                 err = hci_remove_adv_instance(hdev, instance);
1554                 if (!err)
1555                         mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd),
1556                                                  hdev, instance);
1557         }
1558
1559         hci_dev_unlock(hdev);
1560
1561         return rp->status;
1562 }
1563
1564 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data,
1565                                         struct sk_buff *skb)
1566 {
1567         struct hci_rp_le_read_transmit_power *rp = data;
1568
1569         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1570
1571         if (rp->status)
1572                 return rp->status;
1573
1574         hdev->min_le_tx_power = rp->min_le_tx_power;
1575         hdev->max_le_tx_power = rp->max_le_tx_power;
1576
1577         return rp->status;
1578 }
1579
1580 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data,
1581                                      struct sk_buff *skb)
1582 {
1583         struct hci_ev_status *rp = data;
1584         struct hci_cp_le_set_privacy_mode *cp;
1585         struct hci_conn_params *params;
1586
1587         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1588
1589         if (rp->status)
1590                 return rp->status;
1591
1592         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE);
1593         if (!cp)
1594                 return rp->status;
1595
1596         hci_dev_lock(hdev);
1597
1598         params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type);
1599         if (params)
1600                 WRITE_ONCE(params->privacy_mode, cp->mode);
1601
1602         hci_dev_unlock(hdev);
1603
1604         return rp->status;
1605 }
1606
1607 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data,
1608                                    struct sk_buff *skb)
1609 {
1610         struct hci_ev_status *rp = data;
1611         __u8 *sent;
1612
1613         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1614
1615         if (rp->status)
1616                 return rp->status;
1617
1618         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
1619         if (!sent)
1620                 return rp->status;
1621
1622         hci_dev_lock(hdev);
1623
1624         /* If we're doing connection initiation as peripheral. Set a
1625          * timeout in case something goes wrong.
1626          */
1627         if (*sent) {
1628                 struct hci_conn *conn;
1629
1630                 hci_dev_set_flag(hdev, HCI_LE_ADV);
1631
1632                 conn = hci_lookup_le_connect(hdev);
1633                 if (conn)
1634                         queue_delayed_work(hdev->workqueue,
1635                                            &conn->le_conn_timeout,
1636                                            conn->conn_timeout);
1637         } else {
1638                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1639         }
1640
1641         hci_dev_unlock(hdev);
1642
1643         return rp->status;
1644 }
1645
1646 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
1647                                        struct sk_buff *skb)
1648 {
1649         struct hci_cp_le_set_ext_adv_enable *cp;
1650         struct hci_cp_ext_adv_set *set;
1651         struct adv_info *adv = NULL, *n;
1652         struct hci_ev_status *rp = data;
1653
1654         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1655
1656         if (rp->status)
1657                 return rp->status;
1658
1659         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE);
1660         if (!cp)
1661                 return rp->status;
1662
1663         set = (void *)cp->data;
1664
1665         hci_dev_lock(hdev);
1666
1667         if (cp->num_of_sets)
1668                 adv = hci_find_adv_instance(hdev, set->handle);
1669
1670         if (cp->enable) {
1671                 struct hci_conn *conn;
1672
1673                 hci_dev_set_flag(hdev, HCI_LE_ADV);
1674
1675                 if (adv && !adv->periodic)
1676                         adv->enabled = true;
1677
1678                 conn = hci_lookup_le_connect(hdev);
1679                 if (conn)
1680                         queue_delayed_work(hdev->workqueue,
1681                                            &conn->le_conn_timeout,
1682                                            conn->conn_timeout);
1683         } else {
1684                 if (cp->num_of_sets) {
1685                         if (adv)
1686                                 adv->enabled = false;
1687
1688                         /* If just one instance was disabled check if there are
1689                          * any other instance enabled before clearing HCI_LE_ADV
1690                          */
1691                         list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1692                                                  list) {
1693                                 if (adv->enabled)
1694                                         goto unlock;
1695                         }
1696                 } else {
1697                         /* All instances shall be considered disabled */
1698                         list_for_each_entry_safe(adv, n, &hdev->adv_instances,
1699                                                  list)
1700                                 adv->enabled = false;
1701                 }
1702
1703                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
1704         }
1705
1706 unlock:
1707         hci_dev_unlock(hdev);
1708         return rp->status;
1709 }
1710
1711 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data,
1712                                    struct sk_buff *skb)
1713 {
1714         struct hci_cp_le_set_scan_param *cp;
1715         struct hci_ev_status *rp = data;
1716
1717         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1718
1719         if (rp->status)
1720                 return rp->status;
1721
1722         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
1723         if (!cp)
1724                 return rp->status;
1725
1726         hci_dev_lock(hdev);
1727
1728         hdev->le_scan_type = cp->type;
1729
1730         hci_dev_unlock(hdev);
1731
1732         return rp->status;
1733 }
1734
1735 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data,
1736                                        struct sk_buff *skb)
1737 {
1738         struct hci_cp_le_set_ext_scan_params *cp;
1739         struct hci_ev_status *rp = data;
1740         struct hci_cp_le_scan_phy_params *phy_param;
1741
1742         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1743
1744         if (rp->status)
1745                 return rp->status;
1746
1747         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS);
1748         if (!cp)
1749                 return rp->status;
1750
1751         phy_param = (void *)cp->data;
1752
1753         hci_dev_lock(hdev);
1754
1755         hdev->le_scan_type = phy_param->type;
1756
1757         hci_dev_unlock(hdev);
1758
1759         return rp->status;
1760 }
1761
1762 static bool has_pending_adv_report(struct hci_dev *hdev)
1763 {
1764         struct discovery_state *d = &hdev->discovery;
1765
1766         return bacmp(&d->last_adv_addr, BDADDR_ANY);
1767 }
1768
1769 static void clear_pending_adv_report(struct hci_dev *hdev)
1770 {
1771         struct discovery_state *d = &hdev->discovery;
1772
1773         bacpy(&d->last_adv_addr, BDADDR_ANY);
1774         d->last_adv_data_len = 0;
1775 }
1776
1777 #ifndef TIZEN_BT
1778 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1779                                      u8 bdaddr_type, s8 rssi, u32 flags,
1780                                      u8 *data, u8 len)
1781 {
1782         struct discovery_state *d = &hdev->discovery;
1783
1784         if (len > max_adv_len(hdev))
1785                 return;
1786
1787         bacpy(&d->last_adv_addr, bdaddr);
1788         d->last_adv_addr_type = bdaddr_type;
1789         d->last_adv_rssi = rssi;
1790         d->last_adv_flags = flags;
1791         memcpy(d->last_adv_data, data, len);
1792         d->last_adv_data_len = len;
1793 }
1794 #endif
1795
1796 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
1797 {
1798         hci_dev_lock(hdev);
1799
1800         switch (enable) {
1801         case LE_SCAN_ENABLE:
1802                 hci_dev_set_flag(hdev, HCI_LE_SCAN);
1803                 if (hdev->le_scan_type == LE_SCAN_ACTIVE)
1804                         clear_pending_adv_report(hdev);
1805                 if (hci_dev_test_flag(hdev, HCI_MESH))
1806                         hci_discovery_set_state(hdev, DISCOVERY_FINDING);
1807                 break;
1808
1809         case LE_SCAN_DISABLE:
1810                 /* We do this here instead of when setting DISCOVERY_STOPPED
1811                  * since the latter would potentially require waiting for
1812                  * inquiry to stop too.
1813                  */
1814                 if (has_pending_adv_report(hdev)) {
1815                         struct discovery_state *d = &hdev->discovery;
1816
1817                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1818                                           d->last_adv_addr_type, NULL,
1819                                           d->last_adv_rssi, d->last_adv_flags,
1820                                           d->last_adv_data,
1821                                           d->last_adv_data_len, NULL, 0, 0);
1822                 }
1823
1824                 /* Cancel this timer so that we don't try to disable scanning
1825                  * when it's already disabled.
1826                  */
1827                 cancel_delayed_work(&hdev->le_scan_disable);
1828
1829                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1830
1831                 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
1832                  * interrupted scanning due to a connect request. Mark
1833                  * therefore discovery as stopped.
1834                  */
1835                 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1836 #ifndef TIZEN_BT /* The below line is kernel bug. */
1837                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1838 #else
1839                         hci_le_discovery_set_state(hdev, DISCOVERY_STOPPED);
1840 #endif
1841                 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1842                          hdev->discovery.state == DISCOVERY_FINDING)
1843                         queue_work(hdev->workqueue, &hdev->reenable_adv_work);
1844
1845                 break;
1846
1847         default:
1848                 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d",
1849                            enable);
1850                 break;
1851         }
1852
1853         hci_dev_unlock(hdev);
1854 }
1855
1856 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data,
1857                                     struct sk_buff *skb)
1858 {
1859         struct hci_cp_le_set_scan_enable *cp;
1860         struct hci_ev_status *rp = data;
1861
1862         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1863
1864         if (rp->status)
1865                 return rp->status;
1866
1867         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
1868         if (!cp)
1869                 return rp->status;
1870
1871         le_set_scan_enable_complete(hdev, cp->enable);
1872
1873         return rp->status;
1874 }
1875
1876 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data,
1877                                         struct sk_buff *skb)
1878 {
1879         struct hci_cp_le_set_ext_scan_enable *cp;
1880         struct hci_ev_status *rp = data;
1881
1882         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1883
1884         if (rp->status)
1885                 return rp->status;
1886
1887         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE);
1888         if (!cp)
1889                 return rp->status;
1890
1891         le_set_scan_enable_complete(hdev, cp->enable);
1892
1893         return rp->status;
1894 }
1895
1896 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data,
1897                                       struct sk_buff *skb)
1898 {
1899         struct hci_rp_le_read_num_supported_adv_sets *rp = data;
1900
1901         bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status,
1902                    rp->num_of_sets);
1903
1904         if (rp->status)
1905                 return rp->status;
1906
1907         hdev->le_num_of_adv_sets = rp->num_of_sets;
1908
1909         return rp->status;
1910 }
1911
1912 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data,
1913                                           struct sk_buff *skb)
1914 {
1915         struct hci_rp_le_read_accept_list_size *rp = data;
1916
1917         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
1918
1919         if (rp->status)
1920                 return rp->status;
1921
1922         hdev->le_accept_list_size = rp->size;
1923
1924         return rp->status;
1925 }
1926
1927 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data,
1928                                       struct sk_buff *skb)
1929 {
1930         struct hci_ev_status *rp = data;
1931
1932         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1933
1934         if (rp->status)
1935                 return rp->status;
1936
1937         hci_dev_lock(hdev);
1938         hci_bdaddr_list_clear(&hdev->le_accept_list);
1939         hci_dev_unlock(hdev);
1940
1941         return rp->status;
1942 }
1943
1944 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data,
1945                                        struct sk_buff *skb)
1946 {
1947         struct hci_cp_le_add_to_accept_list *sent;
1948         struct hci_ev_status *rp = data;
1949
1950         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1951
1952         if (rp->status)
1953                 return rp->status;
1954
1955         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST);
1956         if (!sent)
1957                 return rp->status;
1958
1959         hci_dev_lock(hdev);
1960         hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr,
1961                             sent->bdaddr_type);
1962         hci_dev_unlock(hdev);
1963
1964         return rp->status;
1965 }
1966
1967 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data,
1968                                          struct sk_buff *skb)
1969 {
1970         struct hci_cp_le_del_from_accept_list *sent;
1971         struct hci_ev_status *rp = data;
1972
1973         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1974
1975         if (rp->status)
1976                 return rp->status;
1977
1978         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST);
1979         if (!sent)
1980                 return rp->status;
1981
1982         hci_dev_lock(hdev);
1983         hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr,
1984                             sent->bdaddr_type);
1985         hci_dev_unlock(hdev);
1986
1987         return rp->status;
1988 }
1989
1990 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data,
1991                                           struct sk_buff *skb)
1992 {
1993         struct hci_rp_le_read_supported_states *rp = data;
1994
1995         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
1996
1997         if (rp->status)
1998                 return rp->status;
1999
2000         memcpy(hdev->le_states, rp->le_states, 8);
2001
2002         return rp->status;
2003 }
2004
2005 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data,
2006                                       struct sk_buff *skb)
2007 {
2008         struct hci_rp_le_read_def_data_len *rp = data;
2009
2010         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2011
2012         if (rp->status)
2013                 return rp->status;
2014
2015         hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
2016         hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
2017
2018         return rp->status;
2019 }
2020
2021 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data,
2022                                        struct sk_buff *skb)
2023 {
2024         struct hci_cp_le_write_def_data_len *sent;
2025         struct hci_ev_status *rp = data;
2026
2027         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2028
2029         if (rp->status)
2030 #ifndef TIZEN_BT
2031                 return rp->status;
2032 #else
2033                 goto unblock;
2034 #endif
2035
2036         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
2037         if (!sent)
2038 #ifndef TIZEN_BT
2039                 return rp->status;
2040 #else
2041                 goto unblock;
2042 #endif
2043
2044         hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
2045         hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
2046
2047         return rp->status;
2048 #ifdef TIZEN_BT
2049 unblock:
2050         mgmt_le_write_host_suggested_data_length_complete(hdev, rp->status);
2051         return rp->status;
2052 #endif
2053 }
2054
2055 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data,
2056                                        struct sk_buff *skb)
2057 {
2058         struct hci_cp_le_add_to_resolv_list *sent;
2059         struct hci_ev_status *rp = data;
2060
2061         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2062
2063         if (rp->status)
2064                 return rp->status;
2065
2066         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST);
2067         if (!sent)
2068                 return rp->status;
2069
2070         hci_dev_lock(hdev);
2071         hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2072                                 sent->bdaddr_type, sent->peer_irk,
2073                                 sent->local_irk);
2074         hci_dev_unlock(hdev);
2075
2076         return rp->status;
2077 }
2078
2079 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data,
2080                                          struct sk_buff *skb)
2081 {
2082         struct hci_cp_le_del_from_resolv_list *sent;
2083         struct hci_ev_status *rp = data;
2084
2085         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2086
2087         if (rp->status)
2088                 return rp->status;
2089
2090         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST);
2091         if (!sent)
2092                 return rp->status;
2093
2094         hci_dev_lock(hdev);
2095         hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr,
2096                             sent->bdaddr_type);
2097         hci_dev_unlock(hdev);
2098
2099         return rp->status;
2100 }
2101
2102 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data,
2103                                       struct sk_buff *skb)
2104 {
2105         struct hci_ev_status *rp = data;
2106
2107         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2108
2109         if (rp->status)
2110                 return rp->status;
2111
2112         hci_dev_lock(hdev);
2113         hci_bdaddr_list_clear(&hdev->le_resolv_list);
2114         hci_dev_unlock(hdev);
2115
2116         return rp->status;
2117 }
2118
2119 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data,
2120                                           struct sk_buff *skb)
2121 {
2122         struct hci_rp_le_read_resolv_list_size *rp = data;
2123
2124         bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size);
2125
2126         if (rp->status)
2127                 return rp->status;
2128
2129         hdev->le_resolv_list_size = rp->size;
2130
2131         return rp->status;
2132 }
2133
2134 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data,
2135                                                struct sk_buff *skb)
2136 {
2137         struct hci_ev_status *rp = data;
2138         __u8 *sent;
2139
2140         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2141
2142         if (rp->status)
2143                 return rp->status;
2144
2145         sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE);
2146         if (!sent)
2147                 return rp->status;
2148
2149         hci_dev_lock(hdev);
2150
2151         if (*sent)
2152                 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION);
2153         else
2154                 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);
2155
2156         hci_dev_unlock(hdev);
2157
2158         return rp->status;
2159 }
2160
2161 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data,
2162                                       struct sk_buff *skb)
2163 {
2164         struct hci_rp_le_read_max_data_len *rp = data;
2165
2166         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2167
2168 #ifndef TIZEN_BT
2169         if (rp->status)
2170                 return rp->status;
2171 #else
2172         hci_dev_lock(hdev);
2173 #endif
2174
2175         hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
2176         hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
2177         hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
2178         hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
2179
2180 #ifdef TIZEN_BT
2181         mgmt_le_read_maximum_data_length_complete(hdev, rp->status);
2182         hci_dev_unlock(hdev);
2183 #endif
2184
2185         return rp->status;
2186 }
2187
2188 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data,
2189                                          struct sk_buff *skb)
2190 {
2191         struct hci_cp_write_le_host_supported *sent;
2192         struct hci_ev_status *rp = data;
2193
2194         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2195
2196         if (rp->status)
2197                 return rp->status;
2198
2199         sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
2200         if (!sent)
2201                 return rp->status;
2202
2203         hci_dev_lock(hdev);
2204
2205         if (sent->le) {
2206                 hdev->features[1][0] |= LMP_HOST_LE;
2207                 hci_dev_set_flag(hdev, HCI_LE_ENABLED);
2208         } else {
2209                 hdev->features[1][0] &= ~LMP_HOST_LE;
2210                 hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
2211                 hci_dev_clear_flag(hdev, HCI_ADVERTISING);
2212         }
2213
2214         if (sent->simul)
2215                 hdev->features[1][0] |= LMP_HOST_LE_BREDR;
2216         else
2217                 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
2218
2219         hci_dev_unlock(hdev);
2220
2221         return rp->status;
2222 }
2223
2224 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data,
2225                                struct sk_buff *skb)
2226 {
2227         struct hci_cp_le_set_adv_param *cp;
2228         struct hci_ev_status *rp = data;
2229
2230         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2231
2232         if (rp->status)
2233                 return rp->status;
2234
2235         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
2236         if (!cp)
2237                 return rp->status;
2238
2239         hci_dev_lock(hdev);
2240         hdev->adv_addr_type = cp->own_address_type;
2241         hci_dev_unlock(hdev);
2242
2243         return rp->status;
2244 }
2245
2246 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data,
2247                                    struct sk_buff *skb)
2248 {
2249         struct hci_rp_le_set_ext_adv_params *rp = data;
2250         struct hci_cp_le_set_ext_adv_params *cp;
2251         struct adv_info *adv_instance;
2252
2253         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2254
2255         if (rp->status)
2256                 return rp->status;
2257
2258         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS);
2259         if (!cp)
2260                 return rp->status;
2261
2262         hci_dev_lock(hdev);
2263         hdev->adv_addr_type = cp->own_addr_type;
2264         if (!cp->handle) {
2265                 /* Store in hdev for instance 0 */
2266                 hdev->adv_tx_power = rp->tx_power;
2267         } else {
2268                 adv_instance = hci_find_adv_instance(hdev, cp->handle);
2269                 if (adv_instance)
2270                         adv_instance->tx_power = rp->tx_power;
2271         }
2272         /* Update adv data as tx power is known now */
2273         hci_update_adv_data(hdev, cp->handle);
2274
2275         hci_dev_unlock(hdev);
2276
2277         return rp->status;
2278 }
2279
2280 #ifdef TIZEN_BT
2281 static u8 hci_cc_enable_rssi(struct hci_dev *hdev, void *data,
2282                              struct sk_buff *skb)
2283 {
2284         struct hci_cc_rsp_enable_rssi *rp = data;
2285
2286         BT_DBG("hci_cc_enable_rssi - %s status 0x%2.2x Event_LE_ext_Opcode 0x%2.2x",
2287                hdev->name, rp->status, rp->le_ext_opcode);
2288
2289         mgmt_enable_rssi_cc(hdev, rp, rp->status);
2290
2291         return rp->status;
2292 }
2293
2294 static u8 hci_cc_get_raw_rssi(struct hci_dev *hdev, void *data,
2295                               struct sk_buff *skb)
2296 {
2297         struct hci_cc_rp_get_raw_rssi *rp = data;
2298
2299         BT_DBG("hci_cc_get_raw_rssi- %s Get Raw Rssi Response[%2.2x %4.4x %2.2X]",
2300                hdev->name, rp->status, rp->conn_handle, rp->rssi_dbm);
2301
2302         mgmt_raw_rssi_response(hdev, rp, rp->status);
2303
2304         return rp->status;
2305 }
2306
2307 static void hci_vendor_ext_rssi_link_alert_evt(struct hci_dev *hdev,
2308                                                struct sk_buff *skb)
2309 {
2310         struct hci_ev_vendor_specific_rssi_alert *ev = (void *)skb->data;
2311
2312         BT_DBG("RSSI event LE_RSSI_LINK_ALERT %X", LE_RSSI_LINK_ALERT);
2313
2314         mgmt_rssi_alert_evt(hdev, ev->conn_handle, ev->alert_type,
2315                             ev->rssi_dbm);
2316 }
2317
2318 static void hci_vendor_specific_group_ext_evt(struct hci_dev *hdev,
2319                                               struct sk_buff *skb)
2320 {
2321         struct hci_ev_ext_vendor_specific *ev = (void *)skb->data;
2322         __u8 event_le_ext_sub_code;
2323
2324         BT_DBG("RSSI event LE_META_VENDOR_SPECIFIC_GROUP_EVENT: %X",
2325                LE_META_VENDOR_SPECIFIC_GROUP_EVENT);
2326
2327         skb_pull(skb, sizeof(*ev));
2328         event_le_ext_sub_code = ev->event_le_ext_sub_code;
2329
2330         switch (event_le_ext_sub_code) {
2331         case LE_RSSI_LINK_ALERT:
2332                 hci_vendor_ext_rssi_link_alert_evt(hdev, skb);
2333                 break;
2334
2335         default:
2336                 break;
2337         }
2338 }
2339
2340 static void hci_vendor_multi_adv_state_change_evt(struct hci_dev *hdev,
2341                                                   struct sk_buff *skb)
2342 {
2343         struct hci_ev_vendor_specific_multi_adv_state *ev = (void *)skb->data;
2344
2345         BT_DBG("LE_MULTI_ADV_STATE_CHANGE_SUB_EVENT");
2346
2347         mgmt_multi_adv_state_change_evt(hdev, ev->adv_instance,
2348                                         ev->state_change_reason,
2349                                         ev->connection_handle);
2350 }
2351
2352 static void hci_vendor_specific_evt(struct hci_dev *hdev, void *data,
2353                                     struct sk_buff *skb)
2354 {
2355         struct hci_ev_vendor_specific *ev = (void *)skb->data;
2356         __u8 event_sub_code;
2357
2358         BT_DBG("hci_vendor_specific_evt");
2359
2360         skb_pull(skb, sizeof(*ev));
2361         event_sub_code = ev->event_sub_code;
2362
2363         switch (event_sub_code) {
2364         case LE_META_VENDOR_SPECIFIC_GROUP_EVENT:
2365                 hci_vendor_specific_group_ext_evt(hdev, skb);
2366                 break;
2367
2368         case LE_MULTI_ADV_STATE_CHANGE_SUB_EVENT:
2369                 hci_vendor_multi_adv_state_change_evt(hdev, skb);
2370                 break;
2371
2372         default:
2373                 break;
2374         }
2375 }
2376 #endif
2377
2378 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data,
2379                            struct sk_buff *skb)
2380 {
2381         struct hci_rp_read_rssi *rp = data;
2382         struct hci_conn *conn;
2383
2384         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2385
2386         if (rp->status)
2387                 return rp->status;
2388
2389         hci_dev_lock(hdev);
2390
2391         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2392         if (conn)
2393                 conn->rssi = rp->rssi;
2394
2395         hci_dev_unlock(hdev);
2396
2397         return rp->status;
2398 }
2399
2400 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data,
2401                                struct sk_buff *skb)
2402 {
2403         struct hci_cp_read_tx_power *sent;
2404         struct hci_rp_read_tx_power *rp = data;
2405         struct hci_conn *conn;
2406
2407         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2408
2409         if (rp->status)
2410                 return rp->status;
2411
2412         sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
2413         if (!sent)
2414                 return rp->status;
2415
2416         hci_dev_lock(hdev);
2417
2418         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
2419         if (!conn)
2420                 goto unlock;
2421
2422         switch (sent->type) {
2423         case 0x00:
2424                 conn->tx_power = rp->tx_power;
2425                 break;
2426         case 0x01:
2427                 conn->max_tx_power = rp->tx_power;
2428                 break;
2429         }
2430
2431 unlock:
2432         hci_dev_unlock(hdev);
2433         return rp->status;
2434 }
2435
2436 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data,
2437                                       struct sk_buff *skb)
2438 {
2439         struct hci_ev_status *rp = data;
2440         u8 *mode;
2441
2442         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
2443
2444         if (rp->status)
2445                 return rp->status;
2446
2447         mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
2448         if (mode)
2449                 hdev->ssp_debug_mode = *mode;
2450
2451         return rp->status;
2452 }
2453
2454 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
2455 {
2456         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2457
2458         if (status) {
2459                 hci_conn_check_pending(hdev);
2460                 return;
2461         }
2462
2463         if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY))
2464                 set_bit(HCI_INQUIRY, &hdev->flags);
2465 }
2466
2467 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
2468 {
2469         struct hci_cp_create_conn *cp;
2470         struct hci_conn *conn;
2471
2472         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2473
2474         cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
2475         if (!cp)
2476                 return;
2477
2478         hci_dev_lock(hdev);
2479
2480         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2481
2482         bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn);
2483
2484         if (status) {
2485                 if (conn && conn->state == BT_CONNECT) {
2486                         if (status != 0x0c || conn->attempt > 2) {
2487                                 conn->state = BT_CLOSED;
2488                                 hci_connect_cfm(conn, status);
2489                                 hci_conn_del(conn);
2490                         } else
2491                                 conn->state = BT_CONNECT2;
2492                 }
2493         } else {
2494                 if (!conn) {
2495                         conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr,
2496                                                   HCI_ROLE_MASTER);
2497                         if (!conn)
2498                                 bt_dev_err(hdev, "no memory for new connection");
2499                 }
2500         }
2501
2502         hci_dev_unlock(hdev);
2503 }
2504
2505 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
2506 {
2507         struct hci_cp_add_sco *cp;
2508         struct hci_conn *acl;
2509         struct hci_link *link;
2510         __u16 handle;
2511
2512         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2513
2514         if (!status)
2515                 return;
2516
2517         cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
2518         if (!cp)
2519                 return;
2520
2521         handle = __le16_to_cpu(cp->handle);
2522
2523         bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
2524
2525         hci_dev_lock(hdev);
2526
2527         acl = hci_conn_hash_lookup_handle(hdev, handle);
2528         if (acl) {
2529                 link = list_first_entry_or_null(&acl->link_list,
2530                                                 struct hci_link, list);
2531                 if (link && link->conn) {
2532                         link->conn->state = BT_CLOSED;
2533
2534                         hci_connect_cfm(link->conn, status);
2535                         hci_conn_del(link->conn);
2536                 }
2537         }
2538
2539         hci_dev_unlock(hdev);
2540 }
2541
2542 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
2543 {
2544         struct hci_cp_auth_requested *cp;
2545         struct hci_conn *conn;
2546
2547         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2548
2549         if (!status)
2550                 return;
2551
2552         cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
2553         if (!cp)
2554                 return;
2555
2556         hci_dev_lock(hdev);
2557
2558         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2559         if (conn) {
2560                 if (conn->state == BT_CONFIG) {
2561                         hci_connect_cfm(conn, status);
2562                         hci_conn_drop(conn);
2563                 }
2564         }
2565
2566         hci_dev_unlock(hdev);
2567 }
2568
2569 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
2570 {
2571         struct hci_cp_set_conn_encrypt *cp;
2572         struct hci_conn *conn;
2573
2574         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2575
2576         if (!status)
2577                 return;
2578
2579         cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
2580         if (!cp)
2581                 return;
2582
2583         hci_dev_lock(hdev);
2584
2585         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2586         if (conn) {
2587                 if (conn->state == BT_CONFIG) {
2588                         hci_connect_cfm(conn, status);
2589                         hci_conn_drop(conn);
2590                 }
2591         }
2592
2593         hci_dev_unlock(hdev);
2594 }
2595
2596 static int hci_outgoing_auth_needed(struct hci_dev *hdev,
2597                                     struct hci_conn *conn)
2598 {
2599         if (conn->state != BT_CONFIG || !conn->out)
2600                 return 0;
2601
2602         if (conn->pending_sec_level == BT_SECURITY_SDP)
2603                 return 0;
2604
2605         /* Only request authentication for SSP connections or non-SSP
2606          * devices with sec_level MEDIUM or HIGH or if MITM protection
2607          * is requested.
2608          */
2609         if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
2610             conn->pending_sec_level != BT_SECURITY_FIPS &&
2611             conn->pending_sec_level != BT_SECURITY_HIGH &&
2612             conn->pending_sec_level != BT_SECURITY_MEDIUM)
2613                 return 0;
2614
2615         return 1;
2616 }
2617
2618 static int hci_resolve_name(struct hci_dev *hdev,
2619                                    struct inquiry_entry *e)
2620 {
2621         struct hci_cp_remote_name_req cp;
2622
2623         memset(&cp, 0, sizeof(cp));
2624
2625         bacpy(&cp.bdaddr, &e->data.bdaddr);
2626         cp.pscan_rep_mode = e->data.pscan_rep_mode;
2627         cp.pscan_mode = e->data.pscan_mode;
2628         cp.clock_offset = e->data.clock_offset;
2629
2630         return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2631 }
2632
2633 static bool hci_resolve_next_name(struct hci_dev *hdev)
2634 {
2635         struct discovery_state *discov = &hdev->discovery;
2636         struct inquiry_entry *e;
2637
2638         if (list_empty(&discov->resolve))
2639                 return false;
2640
2641         /* We should stop if we already spent too much time resolving names. */
2642         if (time_after(jiffies, discov->name_resolve_timeout)) {
2643                 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long.");
2644                 return false;
2645         }
2646
2647         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
2648         if (!e)
2649                 return false;
2650
2651         if (hci_resolve_name(hdev, e) == 0) {
2652                 e->name_state = NAME_PENDING;
2653                 return true;
2654         }
2655
2656         return false;
2657 }
2658
2659 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
2660                                    bdaddr_t *bdaddr, u8 *name, u8 name_len)
2661 {
2662         struct discovery_state *discov = &hdev->discovery;
2663         struct inquiry_entry *e;
2664
2665 #ifdef TIZEN_BT
2666         /* Update the mgmt connected state if necessary. Be careful with
2667          * conn objects that exist but are not (yet) connected however.
2668          * Only those in BT_CONFIG or BT_CONNECTED states can be
2669          * considered connected.
2670          */
2671         if (conn &&
2672             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) {
2673                 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2674                         mgmt_device_connected(hdev, conn, name, name_len);
2675                 else
2676                         mgmt_device_name_update(hdev, bdaddr, name, name_len);
2677         }
2678 #else
2679         if (conn &&
2680             (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
2681             !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2682                 mgmt_device_connected(hdev, conn, name, name_len);
2683 #endif
2684
2685         if (discov->state == DISCOVERY_STOPPED)
2686                 return;
2687
2688         if (discov->state == DISCOVERY_STOPPING)
2689                 goto discov_complete;
2690
2691         if (discov->state != DISCOVERY_RESOLVING)
2692                 return;
2693
2694         e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
2695         /* If the device was not found in a list of found devices names of which
2696          * are pending. there is no need to continue resolving a next name as it
2697          * will be done upon receiving another Remote Name Request Complete
2698          * Event */
2699         if (!e)
2700                 return;
2701
2702         list_del(&e->list);
2703
2704         e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN;
2705         mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi,
2706                          name, name_len);
2707
2708         if (hci_resolve_next_name(hdev))
2709                 return;
2710
2711 discov_complete:
2712         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2713 }
2714
2715 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
2716 {
2717         struct hci_cp_remote_name_req *cp;
2718         struct hci_conn *conn;
2719
2720         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2721
2722         /* If successful wait for the name req complete event before
2723          * checking for the need to do authentication */
2724         if (!status)
2725                 return;
2726
2727         cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
2728         if (!cp)
2729                 return;
2730
2731         hci_dev_lock(hdev);
2732
2733         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
2734
2735         if (hci_dev_test_flag(hdev, HCI_MGMT))
2736                 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
2737
2738         if (!conn)
2739                 goto unlock;
2740
2741         if (!hci_outgoing_auth_needed(hdev, conn))
2742                 goto unlock;
2743
2744         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2745                 struct hci_cp_auth_requested auth_cp;
2746
2747                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
2748
2749                 auth_cp.handle = __cpu_to_le16(conn->handle);
2750                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
2751                              sizeof(auth_cp), &auth_cp);
2752         }
2753
2754 unlock:
2755         hci_dev_unlock(hdev);
2756 }
2757
2758 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
2759 {
2760         struct hci_cp_read_remote_features *cp;
2761         struct hci_conn *conn;
2762
2763         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2764
2765         if (!status)
2766                 return;
2767
2768         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
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                 if (conn->state == BT_CONFIG) {
2777                         hci_connect_cfm(conn, status);
2778                         hci_conn_drop(conn);
2779                 }
2780         }
2781
2782         hci_dev_unlock(hdev);
2783 }
2784
2785 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
2786 {
2787         struct hci_cp_read_remote_ext_features *cp;
2788         struct hci_conn *conn;
2789
2790         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2791
2792         if (!status)
2793                 return;
2794
2795         cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
2796         if (!cp)
2797                 return;
2798
2799         hci_dev_lock(hdev);
2800
2801         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2802         if (conn) {
2803                 if (conn->state == BT_CONFIG) {
2804                         hci_connect_cfm(conn, status);
2805                         hci_conn_drop(conn);
2806                 }
2807         }
2808
2809         hci_dev_unlock(hdev);
2810 }
2811
2812 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle,
2813                                        __u8 status)
2814 {
2815         struct hci_conn *acl;
2816         struct hci_link *link;
2817
2818         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status);
2819
2820         hci_dev_lock(hdev);
2821
2822         acl = hci_conn_hash_lookup_handle(hdev, handle);
2823         if (acl) {
2824                 link = list_first_entry_or_null(&acl->link_list,
2825                                                 struct hci_link, list);
2826                 if (link && link->conn) {
2827                         link->conn->state = BT_CLOSED;
2828
2829                         hci_connect_cfm(link->conn, status);
2830                         hci_conn_del(link->conn);
2831                 }
2832         }
2833
2834         hci_dev_unlock(hdev);
2835 }
2836
2837 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2838 {
2839         struct hci_cp_setup_sync_conn *cp;
2840
2841         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2842
2843         if (!status)
2844                 return;
2845
2846         cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
2847         if (!cp)
2848                 return;
2849
2850         hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2851 }
2852
2853 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
2854 {
2855         struct hci_cp_enhanced_setup_sync_conn *cp;
2856
2857         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2858
2859         if (!status)
2860                 return;
2861
2862         cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
2863         if (!cp)
2864                 return;
2865
2866         hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status);
2867 }
2868
2869 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
2870 {
2871         struct hci_cp_sniff_mode *cp;
2872         struct hci_conn *conn;
2873
2874         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2875
2876         if (!status)
2877                 return;
2878
2879         cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
2880         if (!cp)
2881                 return;
2882
2883         hci_dev_lock(hdev);
2884
2885         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2886         if (conn) {
2887                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2888
2889                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2890                         hci_sco_setup(conn, status);
2891         }
2892
2893         hci_dev_unlock(hdev);
2894 }
2895
2896 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
2897 {
2898         struct hci_cp_exit_sniff_mode *cp;
2899         struct hci_conn *conn;
2900
2901         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2902
2903         if (!status)
2904                 return;
2905
2906         cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
2907         if (!cp)
2908                 return;
2909
2910         hci_dev_lock(hdev);
2911
2912         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2913         if (conn) {
2914                 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
2915
2916                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
2917                         hci_sco_setup(conn, status);
2918         }
2919
2920         hci_dev_unlock(hdev);
2921 }
2922
2923 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
2924 {
2925         struct hci_cp_disconnect *cp;
2926         struct hci_conn_params *params;
2927         struct hci_conn *conn;
2928         bool mgmt_conn;
2929
2930         bt_dev_dbg(hdev, "status 0x%2.2x", status);
2931
2932         /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended
2933          * otherwise cleanup the connection immediately.
2934          */
2935         if (!status && !hdev->suspended)
2936                 return;
2937
2938         cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
2939         if (!cp)
2940                 return;
2941
2942         hci_dev_lock(hdev);
2943
2944         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
2945         if (!conn)
2946                 goto unlock;
2947
2948         if (status) {
2949                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
2950                                        conn->dst_type, status);
2951
2952                 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
2953                         hdev->cur_adv_instance = conn->adv_instance;
2954                         hci_enable_advertising(hdev);
2955                 }
2956
2957                 /* Inform sockets conn is gone before we delete it */
2958                 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED);
2959
2960                 goto done;
2961         }
2962
2963         mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
2964
2965         if (conn->type == ACL_LINK) {
2966                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
2967                         hci_remove_link_key(hdev, &conn->dst);
2968         }
2969
2970         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
2971         if (params) {
2972                 switch (params->auto_connect) {
2973                 case HCI_AUTO_CONN_LINK_LOSS:
2974                         if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT)
2975                                 break;
2976                         fallthrough;
2977
2978                 case HCI_AUTO_CONN_DIRECT:
2979                 case HCI_AUTO_CONN_ALWAYS:
2980                         hci_pend_le_list_del_init(params);
2981                         hci_pend_le_list_add(params, &hdev->pend_le_conns);
2982                         break;
2983
2984                 default:
2985                         break;
2986                 }
2987         }
2988
2989         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
2990                                  cp->reason, mgmt_conn);
2991
2992         hci_disconn_cfm(conn, cp->reason);
2993
2994 done:
2995         /* If the disconnection failed for any reason, the upper layer
2996          * does not retry to disconnect in current implementation.
2997          * Hence, we need to do some basic cleanup here and re-enable
2998          * advertising if necessary.
2999          */
3000         hci_conn_del(conn);
3001 unlock:
3002         hci_dev_unlock(hdev);
3003 }
3004
3005 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
3006 {
3007         /* When using controller based address resolution, then the new
3008          * address types 0x02 and 0x03 are used. These types need to be
3009          * converted back into either public address or random address type
3010          */
3011         switch (type) {
3012         case ADDR_LE_DEV_PUBLIC_RESOLVED:
3013                 if (resolved)
3014                         *resolved = true;
3015                 return ADDR_LE_DEV_PUBLIC;
3016         case ADDR_LE_DEV_RANDOM_RESOLVED:
3017                 if (resolved)
3018                         *resolved = true;
3019                 return ADDR_LE_DEV_RANDOM;
3020         }
3021
3022         if (resolved)
3023                 *resolved = false;
3024         return type;
3025 }
3026
3027 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
3028                               u8 peer_addr_type, u8 own_address_type,
3029                               u8 filter_policy)
3030 {
3031         struct hci_conn *conn;
3032
3033         conn = hci_conn_hash_lookup_le(hdev, peer_addr,
3034                                        peer_addr_type);
3035         if (!conn)
3036                 return;
3037
3038         own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
3039
3040         /* Store the initiator and responder address information which
3041          * is needed for SMP. These values will not change during the
3042          * lifetime of the connection.
3043          */
3044         conn->init_addr_type = own_address_type;
3045         if (own_address_type == ADDR_LE_DEV_RANDOM)
3046                 bacpy(&conn->init_addr, &hdev->random_addr);
3047         else
3048                 bacpy(&conn->init_addr, &hdev->bdaddr);
3049
3050         conn->resp_addr_type = peer_addr_type;
3051         bacpy(&conn->resp_addr, peer_addr);
3052 }
3053
3054 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
3055 {
3056         struct hci_cp_le_create_conn *cp;
3057
3058         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3059
3060         /* All connection failure handling is taken care of by the
3061          * hci_conn_failed function which is triggered by the HCI
3062          * request completion callbacks used for connecting.
3063          */
3064         if (status)
3065                 return;
3066
3067         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
3068         if (!cp)
3069                 return;
3070
3071         hci_dev_lock(hdev);
3072
3073         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
3074                           cp->own_address_type, cp->filter_policy);
3075
3076         hci_dev_unlock(hdev);
3077 }
3078
3079 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
3080 {
3081         struct hci_cp_le_ext_create_conn *cp;
3082
3083         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3084
3085         /* All connection failure handling is taken care of by the
3086          * hci_conn_failed function which is triggered by the HCI
3087          * request completion callbacks used for connecting.
3088          */
3089         if (status)
3090                 return;
3091
3092         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN);
3093         if (!cp)
3094                 return;
3095
3096         hci_dev_lock(hdev);
3097
3098         cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type,
3099                           cp->own_addr_type, cp->filter_policy);
3100
3101         hci_dev_unlock(hdev);
3102 }
3103
3104 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
3105 {
3106         struct hci_cp_le_read_remote_features *cp;
3107         struct hci_conn *conn;
3108
3109         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3110
3111         if (!status)
3112                 return;
3113
3114         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
3115         if (!cp)
3116                 return;
3117
3118         hci_dev_lock(hdev);
3119
3120         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3121         if (conn) {
3122                 if (conn->state == BT_CONFIG) {
3123                         hci_connect_cfm(conn, status);
3124                         hci_conn_drop(conn);
3125                 }
3126         }
3127
3128         hci_dev_unlock(hdev);
3129 }
3130
3131 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
3132 {
3133         struct hci_cp_le_start_enc *cp;
3134         struct hci_conn *conn;
3135
3136         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3137
3138         if (!status)
3139                 return;
3140
3141         hci_dev_lock(hdev);
3142
3143         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
3144         if (!cp)
3145                 goto unlock;
3146
3147         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
3148         if (!conn)
3149                 goto unlock;
3150
3151         if (conn->state != BT_CONNECTED)
3152                 goto unlock;
3153
3154         hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3155         hci_conn_drop(conn);
3156
3157 unlock:
3158         hci_dev_unlock(hdev);
3159 }
3160
3161 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
3162 {
3163         struct hci_cp_switch_role *cp;
3164         struct hci_conn *conn;
3165
3166         BT_DBG("%s status 0x%2.2x", hdev->name, status);
3167
3168         if (!status)
3169                 return;
3170
3171         cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
3172         if (!cp)
3173                 return;
3174
3175         hci_dev_lock(hdev);
3176
3177         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
3178         if (conn)
3179                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3180
3181         hci_dev_unlock(hdev);
3182 }
3183
3184 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
3185                                      struct sk_buff *skb)
3186 {
3187         struct hci_ev_status *ev = data;
3188         struct discovery_state *discov = &hdev->discovery;
3189         struct inquiry_entry *e;
3190
3191         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3192
3193         hci_conn_check_pending(hdev);
3194
3195         if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
3196                 return;
3197
3198         smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
3199         wake_up_bit(&hdev->flags, HCI_INQUIRY);
3200
3201         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3202                 return;
3203
3204         hci_dev_lock(hdev);
3205
3206         if (discov->state != DISCOVERY_FINDING)
3207                 goto unlock;
3208
3209         if (list_empty(&discov->resolve)) {
3210                 /* When BR/EDR inquiry is active and no LE scanning is in
3211                  * progress, then change discovery state to indicate completion.
3212                  *
3213                  * When running LE scanning and BR/EDR inquiry simultaneously
3214                  * and the LE scan already finished, then change the discovery
3215                  * state to indicate completion.
3216                  */
3217                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3218                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3219                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3220                 goto unlock;
3221         }
3222
3223         e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
3224         if (e && hci_resolve_name(hdev, e) == 0) {
3225                 e->name_state = NAME_PENDING;
3226                 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
3227                 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION;
3228         } else {
3229                 /* When BR/EDR inquiry is active and no LE scanning is in
3230                  * progress, then change discovery state to indicate completion.
3231                  *
3232                  * When running LE scanning and BR/EDR inquiry simultaneously
3233                  * and the LE scan already finished, then change the discovery
3234                  * state to indicate completion.
3235                  */
3236                 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
3237                     !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
3238                         hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
3239         }
3240
3241 unlock:
3242         hci_dev_unlock(hdev);
3243 }
3244
3245 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata,
3246                                    struct sk_buff *skb)
3247 {
3248         struct hci_ev_inquiry_result *ev = edata;
3249         struct inquiry_data data;
3250         int i;
3251
3252         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT,
3253                              flex_array_size(ev, info, ev->num)))
3254                 return;
3255
3256         bt_dev_dbg(hdev, "num %d", ev->num);
3257
3258         if (!ev->num)
3259                 return;
3260
3261         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3262                 return;
3263
3264         hci_dev_lock(hdev);
3265
3266         for (i = 0; i < ev->num; i++) {
3267                 struct inquiry_info *info = &ev->info[i];
3268                 u32 flags;
3269
3270                 bacpy(&data.bdaddr, &info->bdaddr);
3271                 data.pscan_rep_mode     = info->pscan_rep_mode;
3272                 data.pscan_period_mode  = info->pscan_period_mode;
3273                 data.pscan_mode         = info->pscan_mode;
3274                 memcpy(data.dev_class, info->dev_class, 3);
3275                 data.clock_offset       = info->clock_offset;
3276                 data.rssi               = HCI_RSSI_INVALID;
3277                 data.ssp_mode           = 0x00;
3278
3279                 flags = hci_inquiry_cache_update(hdev, &data, false);
3280
3281                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3282                                   info->dev_class, HCI_RSSI_INVALID,
3283                                   flags, NULL, 0, NULL, 0, 0);
3284         }
3285
3286         hci_dev_unlock(hdev);
3287 }
3288
3289 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
3290                                   struct sk_buff *skb)
3291 {
3292         struct hci_ev_conn_complete *ev = data;
3293         struct hci_conn *conn;
3294         u8 status = ev->status;
3295
3296         bt_dev_dbg(hdev, "status 0x%2.2x", status);
3297
3298         hci_dev_lock(hdev);
3299
3300         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3301         if (!conn) {
3302                 /* In case of error status and there is no connection pending
3303                  * just unlock as there is nothing to cleanup.
3304                  */
3305                 if (ev->status)
3306                         goto unlock;
3307
3308                 /* Connection may not exist if auto-connected. Check the bredr
3309                  * allowlist to see if this device is allowed to auto connect.
3310                  * If link is an ACL type, create a connection class
3311                  * automatically.
3312                  *
3313                  * Auto-connect will only occur if the event filter is
3314                  * programmed with a given address. Right now, event filter is
3315                  * only used during suspend.
3316                  */
3317                 if (ev->link_type == ACL_LINK &&
3318                     hci_bdaddr_list_lookup_with_flags(&hdev->accept_list,
3319                                                       &ev->bdaddr,
3320                                                       BDADDR_BREDR)) {
3321                         conn = hci_conn_add_unset(hdev, ev->link_type,
3322                                                   &ev->bdaddr, HCI_ROLE_SLAVE);
3323                         if (!conn) {
3324                                 bt_dev_err(hdev, "no memory for new conn");
3325                                 goto unlock;
3326                         }
3327                 } else {
3328                         if (ev->link_type != SCO_LINK)
3329                                 goto unlock;
3330
3331                         conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK,
3332                                                        &ev->bdaddr);
3333                         if (!conn)
3334                                 goto unlock;
3335
3336                         conn->type = SCO_LINK;
3337                 }
3338         }
3339
3340         /* The HCI_Connection_Complete event is only sent once per connection.
3341          * Processing it more than once per connection can corrupt kernel memory.
3342          *
3343          * As the connection handle is set here for the first time, it indicates
3344          * whether the connection is already set up.
3345          */
3346         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
3347                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
3348                 goto unlock;
3349         }
3350
3351         if (!status) {
3352                 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
3353                 if (status)
3354                         goto done;
3355
3356                 if (conn->type == ACL_LINK) {
3357                         conn->state = BT_CONFIG;
3358                         hci_conn_hold(conn);
3359
3360                         if (!conn->out && !hci_conn_ssp_enabled(conn) &&
3361                             !hci_find_link_key(hdev, &ev->bdaddr))
3362                                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3363                         else
3364                                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3365                 } else
3366                         conn->state = BT_CONNECTED;
3367
3368                 hci_debugfs_create_conn(conn);
3369                 hci_conn_add_sysfs(conn);
3370
3371                 if (test_bit(HCI_AUTH, &hdev->flags))
3372                         set_bit(HCI_CONN_AUTH, &conn->flags);
3373
3374                 if (test_bit(HCI_ENCRYPT, &hdev->flags))
3375                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3376
3377                 /* Get remote features */
3378                 if (conn->type == ACL_LINK) {
3379                         struct hci_cp_read_remote_features cp;
3380                         cp.handle = ev->handle;
3381                         hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
3382                                      sizeof(cp), &cp);
3383
3384                         hci_update_scan(hdev);
3385                 }
3386
3387                 /* Set packet type for incoming connection */
3388                 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
3389                         struct hci_cp_change_conn_ptype cp;
3390                         cp.handle = ev->handle;
3391                         cp.pkt_type = cpu_to_le16(conn->pkt_type);
3392                         hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
3393                                      &cp);
3394                 }
3395
3396 #ifdef TIZEN_BT
3397                 if (get_link_mode(conn) & HCI_LM_MASTER)
3398                         hci_conn_change_supervision_timeout(conn,
3399                                         LINK_SUPERVISION_TIMEOUT);
3400 #endif
3401         }
3402
3403         if (conn->type == ACL_LINK)
3404                 hci_sco_setup(conn, ev->status);
3405
3406 done:
3407         if (status) {
3408                 hci_conn_failed(conn, status);
3409         } else if (ev->link_type == SCO_LINK) {
3410                 switch (conn->setting & SCO_AIRMODE_MASK) {
3411                 case SCO_AIRMODE_CVSD:
3412                         if (hdev->notify)
3413                                 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
3414                         break;
3415                 }
3416
3417                 hci_connect_cfm(conn, status);
3418         }
3419
3420 unlock:
3421         hci_dev_unlock(hdev);
3422
3423         hci_conn_check_pending(hdev);
3424 }
3425
3426 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
3427 {
3428         struct hci_cp_reject_conn_req cp;
3429
3430         bacpy(&cp.bdaddr, bdaddr);
3431         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
3432         hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
3433 }
3434
3435 static void hci_conn_request_evt(struct hci_dev *hdev, void *data,
3436                                  struct sk_buff *skb)
3437 {
3438         struct hci_ev_conn_request *ev = data;
3439         int mask = hdev->link_mode;
3440         struct inquiry_entry *ie;
3441         struct hci_conn *conn;
3442         __u8 flags = 0;
3443
3444         bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type);
3445
3446         /* Reject incoming connection from device with same BD ADDR against
3447          * CVE-2020-26555
3448          */
3449         if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) {
3450                 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n",
3451                            &ev->bdaddr);
3452                 hci_reject_conn(hdev, &ev->bdaddr);
3453                 return;
3454         }
3455
3456         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
3457                                       &flags);
3458
3459         if (!(mask & HCI_LM_ACCEPT)) {
3460                 hci_reject_conn(hdev, &ev->bdaddr);
3461                 return;
3462         }
3463
3464         hci_dev_lock(hdev);
3465
3466         if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr,
3467                                    BDADDR_BREDR)) {
3468                 hci_reject_conn(hdev, &ev->bdaddr);
3469                 goto unlock;
3470         }
3471
3472         /* Require HCI_CONNECTABLE or an accept list entry to accept the
3473          * connection. These features are only touched through mgmt so
3474          * only do the checks if HCI_MGMT is set.
3475          */
3476         if (hci_dev_test_flag(hdev, HCI_MGMT) &&
3477             !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
3478             !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr,
3479                                                BDADDR_BREDR)) {
3480                 hci_reject_conn(hdev, &ev->bdaddr);
3481                 goto unlock;
3482         }
3483
3484         /* Connection accepted */
3485
3486         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
3487         if (ie)
3488                 memcpy(ie->data.dev_class, ev->dev_class, 3);
3489
3490 #ifdef TIZEN_BT
3491                 if ((ev->link_type == SCO_LINK || ev->link_type == ESCO_LINK) &&
3492                     hci_conn_hash_lookup_sco(hdev)) {
3493                         struct hci_cp_reject_conn_req cp;
3494
3495                         bacpy(&cp.bdaddr, &ev->bdaddr);
3496                         cp.reason = HCI_ERROR_REJ_LIMITED_RESOURCES;
3497                         hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ,
3498                                      sizeof(cp), &cp);
3499                         hci_dev_unlock(hdev);
3500                         return;
3501                 }
3502 #endif
3503
3504         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
3505                         &ev->bdaddr);
3506         if (!conn) {
3507                 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr,
3508                                           HCI_ROLE_SLAVE);
3509                 if (!conn) {
3510                         bt_dev_err(hdev, "no memory for new connection");
3511                         goto unlock;
3512                 }
3513         }
3514
3515         memcpy(conn->dev_class, ev->dev_class, 3);
3516
3517         hci_dev_unlock(hdev);
3518
3519         if (ev->link_type == ACL_LINK ||
3520             (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
3521                 struct hci_cp_accept_conn_req cp;
3522                 conn->state = BT_CONNECT;
3523
3524                 bacpy(&cp.bdaddr, &ev->bdaddr);
3525
3526                 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
3527                         cp.role = 0x00; /* Become central */
3528                 else
3529                         cp.role = 0x01; /* Remain peripheral */
3530
3531                 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
3532         } else if (!(flags & HCI_PROTO_DEFER)) {
3533                 struct hci_cp_accept_sync_conn_req cp;
3534                 conn->state = BT_CONNECT;
3535
3536                 bacpy(&cp.bdaddr, &ev->bdaddr);
3537                 cp.pkt_type = cpu_to_le16(conn->pkt_type);
3538
3539                 cp.tx_bandwidth   = cpu_to_le32(0x00001f40);
3540                 cp.rx_bandwidth   = cpu_to_le32(0x00001f40);
3541                 cp.max_latency    = cpu_to_le16(0xffff);
3542                 cp.content_format = cpu_to_le16(hdev->voice_setting);
3543                 cp.retrans_effort = 0xff;
3544
3545                 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
3546                              &cp);
3547         } else {
3548                 conn->state = BT_CONNECT2;
3549                 hci_connect_cfm(conn, 0);
3550         }
3551
3552         return;
3553 unlock:
3554         hci_dev_unlock(hdev);
3555 }
3556
3557 static u8 hci_to_mgmt_reason(u8 err)
3558 {
3559         switch (err) {
3560         case HCI_ERROR_CONNECTION_TIMEOUT:
3561                 return MGMT_DEV_DISCONN_TIMEOUT;
3562         case HCI_ERROR_REMOTE_USER_TERM:
3563         case HCI_ERROR_REMOTE_LOW_RESOURCES:
3564         case HCI_ERROR_REMOTE_POWER_OFF:
3565                 return MGMT_DEV_DISCONN_REMOTE;
3566         case HCI_ERROR_LOCAL_HOST_TERM:
3567                 return MGMT_DEV_DISCONN_LOCAL_HOST;
3568         default:
3569                 return MGMT_DEV_DISCONN_UNKNOWN;
3570         }
3571 }
3572
3573 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data,
3574                                      struct sk_buff *skb)
3575 {
3576         struct hci_ev_disconn_complete *ev = data;
3577         u8 reason;
3578         struct hci_conn_params *params;
3579         struct hci_conn *conn;
3580         bool mgmt_connected;
3581
3582         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3583
3584         hci_dev_lock(hdev);
3585
3586         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3587         if (!conn)
3588                 goto unlock;
3589
3590         if (ev->status) {
3591                 mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
3592                                        conn->dst_type, ev->status);
3593                 goto unlock;
3594         }
3595
3596         conn->state = BT_CLOSED;
3597
3598         mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
3599
3600         if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags))
3601                 reason = MGMT_DEV_DISCONN_AUTH_FAILURE;
3602         else
3603                 reason = hci_to_mgmt_reason(ev->reason);
3604
3605         mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
3606                                 reason, mgmt_connected);
3607
3608         if (conn->type == ACL_LINK) {
3609                 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
3610                         hci_remove_link_key(hdev, &conn->dst);
3611
3612                 hci_update_scan(hdev);
3613         }
3614
3615         params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
3616         if (params) {
3617                 switch (params->auto_connect) {
3618                 case HCI_AUTO_CONN_LINK_LOSS:
3619                         if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
3620                                 break;
3621                         fallthrough;
3622
3623                 case HCI_AUTO_CONN_DIRECT:
3624                 case HCI_AUTO_CONN_ALWAYS:
3625                         hci_pend_le_list_del_init(params);
3626                         hci_pend_le_list_add(params, &hdev->pend_le_conns);
3627                         hci_update_passive_scan(hdev);
3628                         break;
3629
3630                 default:
3631                         break;
3632                 }
3633         }
3634
3635         hci_disconn_cfm(conn, ev->reason);
3636
3637         /* Re-enable advertising if necessary, since it might
3638          * have been disabled by the connection. From the
3639          * HCI_LE_Set_Advertise_Enable command description in
3640          * the core specification (v4.0):
3641          * "The Controller shall continue advertising until the Host
3642          * issues an LE_Set_Advertise_Enable command with
3643          * Advertising_Enable set to 0x00 (Advertising is disabled)
3644          * or until a connection is created or until the Advertising
3645          * is timed out due to Directed Advertising."
3646          */
3647         if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) {
3648                 hdev->cur_adv_instance = conn->adv_instance;
3649                 hci_enable_advertising(hdev);
3650         }
3651
3652         hci_conn_del(conn);
3653
3654 #ifdef TIZEN_BT
3655         if (conn->type == ACL_LINK && !hci_conn_num(hdev, ACL_LINK)) {
3656                 int iscan;
3657                 int pscan;
3658
3659                 iscan = test_bit(HCI_ISCAN, &hdev->flags);
3660                 pscan = test_bit(HCI_PSCAN, &hdev->flags);
3661                 if (!iscan && !pscan) {
3662                         u8 scan_enable = SCAN_PAGE;
3663
3664                         hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE,
3665                                      sizeof(scan_enable), &scan_enable);
3666                 }
3667         }
3668 #endif
3669
3670 unlock:
3671         hci_dev_unlock(hdev);
3672 }
3673
3674 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data,
3675                                   struct sk_buff *skb)
3676 {
3677         struct hci_ev_auth_complete *ev = data;
3678         struct hci_conn *conn;
3679
3680         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3681
3682         hci_dev_lock(hdev);
3683
3684         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3685         if (!conn)
3686                 goto unlock;
3687
3688 #ifdef TIZEN_BT
3689         /*  PIN or Key Missing patch */
3690         BT_DBG("remote_auth %x, remote_cap %x, auth_type %x, io_capability %x",
3691                conn->remote_auth, conn->remote_cap,
3692                conn->auth_type, conn->io_capability);
3693
3694         if (ev->status == 0x06 && hci_conn_ssp_enabled(conn)) {
3695                 struct hci_cp_auth_requested cp;
3696
3697                 BT_DBG("Pin or key missing");
3698                 hci_remove_link_key(hdev, &conn->dst);
3699                 cp.handle = cpu_to_le16(conn->handle);
3700                 hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED,
3701                              sizeof(cp), &cp);
3702                 goto unlock;
3703         }
3704 #endif
3705
3706         if (!ev->status) {
3707                 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3708                 set_bit(HCI_CONN_AUTH, &conn->flags);
3709                 conn->sec_level = conn->pending_sec_level;
3710         } else {
3711                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3712                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3713
3714                 mgmt_auth_failed(conn, ev->status);
3715         }
3716
3717         clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3718
3719         if (conn->state == BT_CONFIG) {
3720                 if (!ev->status && hci_conn_ssp_enabled(conn)) {
3721                         struct hci_cp_set_conn_encrypt cp;
3722                         cp.handle  = ev->handle;
3723                         cp.encrypt = 0x01;
3724                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3725                                      &cp);
3726                 } else {
3727                         conn->state = BT_CONNECTED;
3728                         hci_connect_cfm(conn, ev->status);
3729                         hci_conn_drop(conn);
3730                 }
3731         } else {
3732                 hci_auth_cfm(conn, ev->status);
3733
3734                 hci_conn_hold(conn);
3735                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3736                 hci_conn_drop(conn);
3737         }
3738
3739         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
3740                 if (!ev->status) {
3741                         struct hci_cp_set_conn_encrypt cp;
3742                         cp.handle  = ev->handle;
3743                         cp.encrypt = 0x01;
3744                         hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
3745                                      &cp);
3746                 } else {
3747                         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3748                         hci_encrypt_cfm(conn, ev->status);
3749                 }
3750         }
3751
3752 unlock:
3753         hci_dev_unlock(hdev);
3754 }
3755
3756 static void hci_remote_name_evt(struct hci_dev *hdev, void *data,
3757                                 struct sk_buff *skb)
3758 {
3759         struct hci_ev_remote_name *ev = data;
3760         struct hci_conn *conn;
3761
3762         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3763
3764         hci_conn_check_pending(hdev);
3765
3766         hci_dev_lock(hdev);
3767
3768         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3769
3770         if (!hci_dev_test_flag(hdev, HCI_MGMT))
3771                 goto check_auth;
3772
3773         if (ev->status == 0)
3774                 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
3775                                        strnlen(ev->name, HCI_MAX_NAME_LENGTH));
3776         else
3777                 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);
3778
3779 check_auth:
3780         if (!conn)
3781                 goto unlock;
3782
3783         if (!hci_outgoing_auth_needed(hdev, conn))
3784                 goto unlock;
3785
3786         if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
3787                 struct hci_cp_auth_requested cp;
3788
3789                 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);
3790
3791                 cp.handle = __cpu_to_le16(conn->handle);
3792                 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
3793         }
3794
3795 unlock:
3796         hci_dev_unlock(hdev);
3797 }
3798
3799 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
3800                                    struct sk_buff *skb)
3801 {
3802         struct hci_ev_encrypt_change *ev = data;
3803         struct hci_conn *conn;
3804
3805         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3806
3807         hci_dev_lock(hdev);
3808
3809         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3810         if (!conn)
3811                 goto unlock;
3812
3813         if (!ev->status) {
3814                 if (ev->encrypt) {
3815                         /* Encryption implies authentication */
3816                         set_bit(HCI_CONN_AUTH, &conn->flags);
3817                         set_bit(HCI_CONN_ENCRYPT, &conn->flags);
3818                         conn->sec_level = conn->pending_sec_level;
3819
3820                         /* P-256 authentication key implies FIPS */
3821                         if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
3822                                 set_bit(HCI_CONN_FIPS, &conn->flags);
3823
3824                         if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
3825                             conn->type == LE_LINK)
3826                                 set_bit(HCI_CONN_AES_CCM, &conn->flags);
3827                 } else {
3828                         clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
3829                         clear_bit(HCI_CONN_AES_CCM, &conn->flags);
3830                 }
3831         }
3832
3833         /* We should disregard the current RPA and generate a new one
3834          * whenever the encryption procedure fails.
3835          */
3836         if (ev->status && conn->type == LE_LINK) {
3837                 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
3838                 hci_adv_instances_set_rpa_expired(hdev, true);
3839         }
3840
3841         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
3842
3843         /* Check link security requirements are met */
3844         if (!hci_conn_check_link_mode(conn))
3845                 ev->status = HCI_ERROR_AUTH_FAILURE;
3846
3847         if (ev->status && conn->state == BT_CONNECTED) {
3848                 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
3849                         set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
3850
3851                 /* Notify upper layers so they can cleanup before
3852                  * disconnecting.
3853                  */
3854                 hci_encrypt_cfm(conn, ev->status);
3855                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3856                 hci_conn_drop(conn);
3857                 goto unlock;
3858         }
3859
3860         /* Try reading the encryption key size for encrypted ACL links */
3861         if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
3862                 struct hci_cp_read_enc_key_size cp;
3863
3864                 /* Only send HCI_Read_Encryption_Key_Size if the
3865                  * controller really supports it. If it doesn't, assume
3866                  * the default size (16).
3867                  */
3868                 if (!(hdev->commands[20] & 0x10)) {
3869                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3870                         goto notify;
3871                 }
3872
3873                 cp.handle = cpu_to_le16(conn->handle);
3874                 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE,
3875                                  sizeof(cp), &cp)) {
3876                         bt_dev_err(hdev, "sending read key size failed");
3877                         conn->enc_key_size = HCI_LINK_KEY_SIZE;
3878                         goto notify;
3879                 }
3880
3881                 goto unlock;
3882         }
3883
3884         /* Set the default Authenticated Payload Timeout after
3885          * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B
3886          * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be
3887          * sent when the link is active and Encryption is enabled, the conn
3888          * type can be either LE or ACL and controller must support LMP Ping.
3889          * Ensure for AES-CCM encryption as well.
3890          */
3891         if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) &&
3892             test_bit(HCI_CONN_AES_CCM, &conn->flags) &&
3893             ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) ||
3894              (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) {
3895                 struct hci_cp_write_auth_payload_to cp;
3896
3897                 cp.handle = cpu_to_le16(conn->handle);
3898                 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout);
3899                 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO,
3900                                  sizeof(cp), &cp))
3901                         bt_dev_err(hdev, "write auth payload timeout failed");
3902         }
3903
3904 notify:
3905         hci_encrypt_cfm(conn, ev->status);
3906
3907 unlock:
3908         hci_dev_unlock(hdev);
3909 }
3910
3911 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data,
3912                                              struct sk_buff *skb)
3913 {
3914         struct hci_ev_change_link_key_complete *ev = data;
3915         struct hci_conn *conn;
3916
3917         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3918
3919         hci_dev_lock(hdev);
3920
3921         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3922         if (conn) {
3923                 if (!ev->status)
3924                         set_bit(HCI_CONN_SECURE, &conn->flags);
3925
3926                 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
3927
3928                 hci_key_change_cfm(conn, ev->status);
3929         }
3930
3931         hci_dev_unlock(hdev);
3932 }
3933
3934 static void hci_remote_features_evt(struct hci_dev *hdev, void *data,
3935                                     struct sk_buff *skb)
3936 {
3937         struct hci_ev_remote_features *ev = data;
3938         struct hci_conn *conn;
3939
3940         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
3941
3942         hci_dev_lock(hdev);
3943
3944         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3945         if (!conn)
3946                 goto unlock;
3947
3948         if (!ev->status)
3949                 memcpy(conn->features[0], ev->features, 8);
3950
3951         if (conn->state != BT_CONFIG)
3952                 goto unlock;
3953
3954         if (!ev->status && lmp_ext_feat_capable(hdev) &&
3955             lmp_ext_feat_capable(conn)) {
3956                 struct hci_cp_read_remote_ext_features cp;
3957                 cp.handle = ev->handle;
3958                 cp.page = 0x01;
3959                 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
3960                              sizeof(cp), &cp);
3961                 goto unlock;
3962         }
3963
3964         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3965                 struct hci_cp_remote_name_req cp;
3966                 memset(&cp, 0, sizeof(cp));
3967                 bacpy(&cp.bdaddr, &conn->dst);
3968                 cp.pscan_rep_mode = 0x02;
3969                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3970         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3971                 mgmt_device_connected(hdev, conn, NULL, 0);
3972
3973         if (!hci_outgoing_auth_needed(hdev, conn)) {
3974                 conn->state = BT_CONNECTED;
3975                 hci_connect_cfm(conn, ev->status);
3976                 hci_conn_drop(conn);
3977         }
3978
3979 unlock:
3980         hci_dev_unlock(hdev);
3981 }
3982
3983 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
3984 {
3985         cancel_delayed_work(&hdev->cmd_timer);
3986
3987         rcu_read_lock();
3988         if (!test_bit(HCI_RESET, &hdev->flags)) {
3989                 if (ncmd) {
3990                         cancel_delayed_work(&hdev->ncmd_timer);
3991                         atomic_set(&hdev->cmd_cnt, 1);
3992                 } else {
3993                         if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
3994                                 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer,
3995                                                    HCI_NCMD_TIMEOUT);
3996                 }
3997         }
3998         rcu_read_unlock();
3999 }
4000
4001 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
4002                                         struct sk_buff *skb)
4003 {
4004         struct hci_rp_le_read_buffer_size_v2 *rp = data;
4005
4006         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4007
4008         if (rp->status)
4009                 return rp->status;
4010
4011         hdev->le_mtu   = __le16_to_cpu(rp->acl_mtu);
4012         hdev->le_pkts  = rp->acl_max_pkt;
4013         hdev->iso_mtu  = __le16_to_cpu(rp->iso_mtu);
4014         hdev->iso_pkts = rp->iso_max_pkt;
4015
4016         hdev->le_cnt  = hdev->le_pkts;
4017         hdev->iso_cnt = hdev->iso_pkts;
4018
4019         BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu,
4020                hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts);
4021
4022         return rp->status;
4023 }
4024
4025 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status)
4026 {
4027         struct hci_conn *conn, *tmp;
4028
4029         lockdep_assert_held(&hdev->lock);
4030
4031         list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
4032                 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) ||
4033                     conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig)
4034                         continue;
4035
4036                 if (HCI_CONN_HANDLE_UNSET(conn->handle))
4037                         hci_conn_failed(conn, status);
4038         }
4039 }
4040
4041 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
4042                                    struct sk_buff *skb)
4043 {
4044         struct hci_rp_le_set_cig_params *rp = data;
4045         struct hci_cp_le_set_cig_params *cp;
4046         struct hci_conn *conn;
4047         u8 status = rp->status;
4048         bool pending = false;
4049         int i;
4050
4051         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4052
4053         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS);
4054         if (!rp->status && (!cp || rp->num_handles != cp->num_cis ||
4055                             rp->cig_id != cp->cig_id)) {
4056                 bt_dev_err(hdev, "unexpected Set CIG Parameters response data");
4057                 status = HCI_ERROR_UNSPECIFIED;
4058         }
4059
4060         hci_dev_lock(hdev);
4061
4062         /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554
4063          *
4064          * If the Status return parameter is non-zero, then the state of the CIG
4065          * and its CIS configurations shall not be changed by the command. If
4066          * the CIG did not already exist, it shall not be created.
4067          */
4068         if (status) {
4069                 /* Keep current configuration, fail only the unbound CIS */
4070                 hci_unbound_cis_failed(hdev, rp->cig_id, status);
4071                 goto unlock;
4072         }
4073
4074         /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553
4075          *
4076          * If the Status return parameter is zero, then the Controller shall
4077          * set the Connection_Handle arrayed return parameter to the connection
4078          * handle(s) corresponding to the CIS configurations specified in
4079          * the CIS_IDs command parameter, in the same order.
4080          */
4081         for (i = 0; i < rp->num_handles; ++i) {
4082                 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id,
4083                                                 cp->cis[i].cis_id);
4084                 if (!conn || !bacmp(&conn->dst, BDADDR_ANY))
4085                         continue;
4086
4087                 if (conn->state != BT_BOUND && conn->state != BT_CONNECT)
4088                         continue;
4089
4090                 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i])))
4091                         continue;
4092
4093                 if (conn->state == BT_CONNECT)
4094                         pending = true;
4095         }
4096
4097 unlock:
4098         if (pending)
4099                 hci_le_create_cis_pending(hdev);
4100
4101         hci_dev_unlock(hdev);
4102
4103         return rp->status;
4104 }
4105
4106 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data,
4107                                    struct sk_buff *skb)
4108 {
4109         struct hci_rp_le_setup_iso_path *rp = data;
4110         struct hci_cp_le_setup_iso_path *cp;
4111         struct hci_conn *conn;
4112
4113         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4114
4115         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH);
4116         if (!cp)
4117                 return rp->status;
4118
4119         hci_dev_lock(hdev);
4120
4121         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
4122         if (!conn)
4123                 goto unlock;
4124
4125         if (rp->status) {
4126                 hci_connect_cfm(conn, rp->status);
4127                 hci_conn_del(conn);
4128                 goto unlock;
4129         }
4130
4131         switch (cp->direction) {
4132         /* Input (Host to Controller) */
4133         case 0x00:
4134                 /* Only confirm connection if output only */
4135                 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu)
4136                         hci_connect_cfm(conn, rp->status);
4137                 break;
4138         /* Output (Controller to Host) */
4139         case 0x01:
4140                 /* Confirm connection since conn->iso_qos is always configured
4141                  * last.
4142                  */
4143                 hci_connect_cfm(conn, rp->status);
4144                 break;
4145         }
4146
4147 unlock:
4148         hci_dev_unlock(hdev);
4149         return rp->status;
4150 }
4151
4152 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status)
4153 {
4154         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4155 }
4156
4157 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data,
4158                                    struct sk_buff *skb)
4159 {
4160         struct hci_ev_status *rp = data;
4161         struct hci_cp_le_set_per_adv_params *cp;
4162
4163         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4164
4165         if (rp->status)
4166                 return rp->status;
4167
4168         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS);
4169         if (!cp)
4170                 return rp->status;
4171
4172         /* TODO: set the conn state */
4173         return rp->status;
4174 }
4175
4176 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
4177                                        struct sk_buff *skb)
4178 {
4179         struct hci_ev_status *rp = data;
4180         struct hci_cp_le_set_per_adv_enable *cp;
4181         struct adv_info *adv = NULL, *n;
4182         u8 per_adv_cnt = 0;
4183
4184         bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
4185
4186         if (rp->status)
4187                 return rp->status;
4188
4189         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
4190         if (!cp)
4191                 return rp->status;
4192
4193         hci_dev_lock(hdev);
4194
4195         adv = hci_find_adv_instance(hdev, cp->handle);
4196
4197         if (cp->enable) {
4198                 hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
4199
4200                 if (adv)
4201                         adv->enabled = true;
4202         } else {
4203                 /* If just one instance was disabled check if there are
4204                  * any other instance enabled before clearing HCI_LE_PER_ADV.
4205                  * The current periodic adv instance will be marked as
4206                  * disabled once extended advertising is also disabled.
4207                  */
4208                 list_for_each_entry_safe(adv, n, &hdev->adv_instances,
4209                                          list) {
4210                         if (adv->periodic && adv->enabled)
4211                                 per_adv_cnt++;
4212                 }
4213
4214                 if (per_adv_cnt > 1)
4215                         goto unlock;
4216
4217                 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
4218         }
4219
4220 unlock:
4221         hci_dev_unlock(hdev);
4222
4223         return rp->status;
4224 }
4225
4226 #define HCI_CC_VL(_op, _func, _min, _max) \
4227 { \
4228         .op = _op, \
4229         .func = _func, \
4230         .min_len = _min, \
4231         .max_len = _max, \
4232 }
4233
4234 #define HCI_CC(_op, _func, _len) \
4235         HCI_CC_VL(_op, _func, _len, _len)
4236
4237 #define HCI_CC_STATUS(_op, _func) \
4238         HCI_CC(_op, _func, sizeof(struct hci_ev_status))
4239
4240 static const struct hci_cc {
4241         u16  op;
4242         u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
4243         u16  min_len;
4244         u16  max_len;
4245 } hci_cc_table[] = {
4246         HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel),
4247         HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq),
4248         HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq),
4249         HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL,
4250                       hci_cc_remote_name_req_cancel),
4251         HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery,
4252                sizeof(struct hci_rp_role_discovery)),
4253         HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy,
4254                sizeof(struct hci_rp_read_link_policy)),
4255         HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy,
4256                sizeof(struct hci_rp_write_link_policy)),
4257         HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy,
4258                sizeof(struct hci_rp_read_def_link_policy)),
4259         HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY,
4260                       hci_cc_write_def_link_policy),
4261         HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset),
4262         HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key,
4263                sizeof(struct hci_rp_read_stored_link_key)),
4264         HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key,
4265                sizeof(struct hci_rp_delete_stored_link_key)),
4266         HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name),
4267         HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name,
4268                sizeof(struct hci_rp_read_local_name)),
4269         HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable),
4270         HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode),
4271         HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable),
4272         HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter),
4273         HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev,
4274                sizeof(struct hci_rp_read_class_of_dev)),
4275         HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev),
4276         HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting,
4277                sizeof(struct hci_rp_read_voice_setting)),
4278         HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting),
4279         HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac,
4280                sizeof(struct hci_rp_read_num_supported_iac)),
4281         HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode),
4282         HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support),
4283         HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout,
4284                sizeof(struct hci_rp_read_auth_payload_to)),
4285         HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout,
4286                sizeof(struct hci_rp_write_auth_payload_to)),
4287         HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version,
4288                sizeof(struct hci_rp_read_local_version)),
4289         HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands,
4290                sizeof(struct hci_rp_read_local_commands)),
4291         HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features,
4292                sizeof(struct hci_rp_read_local_features)),
4293         HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features,
4294                sizeof(struct hci_rp_read_local_ext_features)),
4295         HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size,
4296                sizeof(struct hci_rp_read_buffer_size)),
4297         HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr,
4298                sizeof(struct hci_rp_read_bd_addr)),
4299         HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts,
4300                sizeof(struct hci_rp_read_local_pairing_opts)),
4301         HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity,
4302                sizeof(struct hci_rp_read_page_scan_activity)),
4303         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
4304                       hci_cc_write_page_scan_activity),
4305         HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type,
4306                sizeof(struct hci_rp_read_page_scan_type)),
4307         HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type),
4308         HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size,
4309                sizeof(struct hci_rp_read_data_block_size)),
4310         HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode,
4311                sizeof(struct hci_rp_read_flow_control_mode)),
4312         HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info,
4313                sizeof(struct hci_rp_read_local_amp_info)),
4314         HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock,
4315                sizeof(struct hci_rp_read_clock)),
4316         HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size,
4317                sizeof(struct hci_rp_read_enc_key_size)),
4318         HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power,
4319                sizeof(struct hci_rp_read_inq_rsp_tx_power)),
4320         HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING,
4321                hci_cc_read_def_err_data_reporting,
4322                sizeof(struct hci_rp_read_def_err_data_reporting)),
4323         HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING,
4324                       hci_cc_write_def_err_data_reporting),
4325         HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply,
4326                sizeof(struct hci_rp_pin_code_reply)),
4327         HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply,
4328                sizeof(struct hci_rp_pin_code_neg_reply)),
4329         HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data,
4330                sizeof(struct hci_rp_read_local_oob_data)),
4331         HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data,
4332                sizeof(struct hci_rp_read_local_oob_ext_data)),
4333         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size,
4334                sizeof(struct hci_rp_le_read_buffer_size)),
4335         HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features,
4336                sizeof(struct hci_rp_le_read_local_features)),
4337         HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power,
4338                sizeof(struct hci_rp_le_read_adv_tx_power)),
4339         HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply,
4340                sizeof(struct hci_rp_user_confirm_reply)),
4341         HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply,
4342                sizeof(struct hci_rp_user_confirm_reply)),
4343         HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply,
4344                sizeof(struct hci_rp_user_confirm_reply)),
4345         HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply,
4346                sizeof(struct hci_rp_user_confirm_reply)),
4347         HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr),
4348         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable),
4349         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param),
4350         HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable),
4351         HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE,
4352                hci_cc_le_read_accept_list_size,
4353                sizeof(struct hci_rp_le_read_accept_list_size)),
4354         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list),
4355         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST,
4356                       hci_cc_le_add_to_accept_list),
4357         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST,
4358                       hci_cc_le_del_from_accept_list),
4359         HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states,
4360                sizeof(struct hci_rp_le_read_supported_states)),
4361         HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len,
4362                sizeof(struct hci_rp_le_read_def_data_len)),
4363         HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN,
4364                       hci_cc_le_write_def_data_len),
4365         HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST,
4366                       hci_cc_le_add_to_resolv_list),
4367         HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST,
4368                       hci_cc_le_del_from_resolv_list),
4369         HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST,
4370                       hci_cc_le_clear_resolv_list),
4371         HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size,
4372                sizeof(struct hci_rp_le_read_resolv_list_size)),
4373         HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE,
4374                       hci_cc_le_set_addr_resolution_enable),
4375         HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len,
4376                sizeof(struct hci_rp_le_read_max_data_len)),
4377         HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED,
4378                       hci_cc_write_le_host_supported),
4379         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param),
4380         HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi,
4381                sizeof(struct hci_rp_read_rssi)),
4382         HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power,
4383                sizeof(struct hci_rp_read_tx_power)),
4384         HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode),
4385         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS,
4386                       hci_cc_le_set_ext_scan_param),
4387         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE,
4388                       hci_cc_le_set_ext_scan_enable),
4389         HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy),
4390         HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS,
4391                hci_cc_le_read_num_adv_sets,
4392                sizeof(struct hci_rp_le_read_num_supported_adv_sets)),
4393         HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param,
4394                sizeof(struct hci_rp_le_set_ext_adv_params)),
4395         HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE,
4396                       hci_cc_le_set_ext_adv_enable),
4397         HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
4398                       hci_cc_le_set_adv_set_random_addr),
4399         HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set),
4400         HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets),
4401         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param),
4402         HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE,
4403                       hci_cc_le_set_per_adv_enable),
4404         HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power,
4405                sizeof(struct hci_rp_le_read_transmit_power)),
4406 #ifdef TIZEN_BT
4407         HCI_CC(HCI_OP_ENABLE_RSSI, hci_cc_enable_rssi,
4408                sizeof(struct hci_cc_rsp_enable_rssi)),
4409         HCI_CC(HCI_OP_GET_RAW_RSSI, hci_cc_get_raw_rssi,
4410                sizeof(struct hci_cc_rp_get_raw_rssi)),
4411 #endif
4412         HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode),
4413         HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2,
4414                sizeof(struct hci_rp_le_read_buffer_size_v2)),
4415         HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params,
4416                   sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE),
4417         HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path,
4418                sizeof(struct hci_rp_le_setup_iso_path)),
4419 };
4420
4421 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc,
4422                       struct sk_buff *skb)
4423 {
4424         void *data;
4425
4426         if (skb->len < cc->min_len) {
4427                 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u",
4428                            cc->op, skb->len, cc->min_len);
4429                 return HCI_ERROR_UNSPECIFIED;
4430         }
4431
4432         /* Just warn if the length is over max_len size it still be possible to
4433          * partially parse the cc so leave to callback to decide if that is
4434          * acceptable.
4435          */
4436         if (skb->len > cc->max_len)
4437                 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u",
4438                             cc->op, skb->len, cc->max_len);
4439
4440         data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len);
4441         if (!data)
4442                 return HCI_ERROR_UNSPECIFIED;
4443
4444         return cc->func(hdev, data, skb);
4445 }
4446
4447 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
4448                                  struct sk_buff *skb, u16 *opcode, u8 *status,
4449                                  hci_req_complete_t *req_complete,
4450                                  hci_req_complete_skb_t *req_complete_skb)
4451 {
4452         struct hci_ev_cmd_complete *ev = data;
4453         int i;
4454
4455         *opcode = __le16_to_cpu(ev->opcode);
4456
4457         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4458
4459         for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) {
4460                 if (hci_cc_table[i].op == *opcode) {
4461                         *status = hci_cc_func(hdev, &hci_cc_table[i], skb);
4462                         break;
4463                 }
4464         }
4465
4466         if (i == ARRAY_SIZE(hci_cc_table)) {
4467                 /* Unknown opcode, assume byte 0 contains the status, so
4468                  * that e.g. __hci_cmd_sync() properly returns errors
4469                  * for vendor specific commands send by HCI drivers.
4470                  * If a vendor doesn't actually follow this convention we may
4471                  * need to introduce a vendor CC table in order to properly set
4472                  * the status.
4473                  */
4474                 *status = skb->data[0];
4475         }
4476
4477         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4478
4479         hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
4480                              req_complete_skb);
4481
4482         if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4483                 bt_dev_err(hdev,
4484                            "unexpected event for opcode 0x%4.4x", *opcode);
4485                 return;
4486         }
4487
4488         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4489                 queue_work(hdev->workqueue, &hdev->cmd_work);
4490 }
4491
4492 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
4493 {
4494         struct hci_cp_le_create_cis *cp;
4495         bool pending = false;
4496         int i;
4497
4498         bt_dev_dbg(hdev, "status 0x%2.2x", status);
4499
4500         if (!status)
4501                 return;
4502
4503         cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS);
4504         if (!cp)
4505                 return;
4506
4507         hci_dev_lock(hdev);
4508
4509         /* Remove connection if command failed */
4510         for (i = 0; cp->num_cis; cp->num_cis--, i++) {
4511                 struct hci_conn *conn;
4512                 u16 handle;
4513
4514                 handle = __le16_to_cpu(cp->cis[i].cis_handle);
4515
4516                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4517                 if (conn) {
4518                         if (test_and_clear_bit(HCI_CONN_CREATE_CIS,
4519                                                &conn->flags))
4520                                 pending = true;
4521                         conn->state = BT_CLOSED;
4522                         hci_connect_cfm(conn, status);
4523                         hci_conn_del(conn);
4524                 }
4525         }
4526
4527         if (pending)
4528                 hci_le_create_cis_pending(hdev);
4529
4530         hci_dev_unlock(hdev);
4531 }
4532
4533 #define HCI_CS(_op, _func) \
4534 { \
4535         .op = _op, \
4536         .func = _func, \
4537 }
4538
4539 static const struct hci_cs {
4540         u16  op;
4541         void (*func)(struct hci_dev *hdev, __u8 status);
4542 } hci_cs_table[] = {
4543         HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry),
4544         HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn),
4545         HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect),
4546         HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco),
4547         HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested),
4548         HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt),
4549         HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req),
4550         HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features),
4551         HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES,
4552                hci_cs_read_remote_ext_features),
4553         HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn),
4554         HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN,
4555                hci_cs_enhanced_setup_sync_conn),
4556         HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode),
4557         HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode),
4558         HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role),
4559         HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn),
4560         HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features),
4561         HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc),
4562         HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn),
4563         HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis),
4564         HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big),
4565 };
4566
4567 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data,
4568                                struct sk_buff *skb, u16 *opcode, u8 *status,
4569                                hci_req_complete_t *req_complete,
4570                                hci_req_complete_skb_t *req_complete_skb)
4571 {
4572         struct hci_ev_cmd_status *ev = data;
4573         int i;
4574
4575         *opcode = __le16_to_cpu(ev->opcode);
4576         *status = ev->status;
4577
4578         bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode);
4579
4580         for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) {
4581                 if (hci_cs_table[i].op == *opcode) {
4582                         hci_cs_table[i].func(hdev, ev->status);
4583                         break;
4584                 }
4585         }
4586
4587         handle_cmd_cnt_and_timer(hdev, ev->ncmd);
4588
4589         /* Indicate request completion if the command failed. Also, if
4590          * we're not waiting for a special event and we get a success
4591          * command status we should try to flag the request as completed
4592          * (since for this kind of commands there will not be a command
4593          * complete event).
4594          */
4595         if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) {
4596                 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
4597                                      req_complete_skb);
4598                 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) {
4599                         bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x",
4600                                    *opcode);
4601                         return;
4602                 }
4603         }
4604
4605         if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
4606                 queue_work(hdev->workqueue, &hdev->cmd_work);
4607 }
4608
4609 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data,
4610                                    struct sk_buff *skb)
4611 {
4612         struct hci_ev_hardware_error *ev = data;
4613
4614         bt_dev_dbg(hdev, "code 0x%2.2x", ev->code);
4615
4616 #ifdef TIZEN_BT
4617         hci_dev_lock(hdev);
4618         mgmt_hardware_error(hdev, ev->code);
4619         hci_dev_unlock(hdev);
4620 #endif
4621         hdev->hw_error_code = ev->code;
4622
4623         queue_work(hdev->req_workqueue, &hdev->error_reset);
4624 }
4625
4626 static void hci_role_change_evt(struct hci_dev *hdev, void *data,
4627                                 struct sk_buff *skb)
4628 {
4629         struct hci_ev_role_change *ev = data;
4630         struct hci_conn *conn;
4631
4632         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4633
4634         hci_dev_lock(hdev);
4635
4636         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4637         if (conn) {
4638                 if (!ev->status)
4639                         conn->role = ev->role;
4640
4641                 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
4642
4643                 hci_role_switch_cfm(conn, ev->status, ev->role);
4644 #ifdef TIZEN_BT
4645                 if (!ev->status && (get_link_mode(conn) & HCI_LM_MASTER))
4646                         hci_conn_change_supervision_timeout(conn,
4647                                         LINK_SUPERVISION_TIMEOUT);
4648 #endif
4649         }
4650
4651         hci_dev_unlock(hdev);
4652 }
4653
4654 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
4655                                   struct sk_buff *skb)
4656 {
4657         struct hci_ev_num_comp_pkts *ev = data;
4658         int i;
4659
4660         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS,
4661                              flex_array_size(ev, handles, ev->num)))
4662                 return;
4663
4664         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
4665                 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode);
4666                 return;
4667         }
4668
4669         bt_dev_dbg(hdev, "num %d", ev->num);
4670
4671         for (i = 0; i < ev->num; i++) {
4672                 struct hci_comp_pkts_info *info = &ev->handles[i];
4673                 struct hci_conn *conn;
4674                 __u16  handle, count;
4675
4676                 handle = __le16_to_cpu(info->handle);
4677                 count  = __le16_to_cpu(info->count);
4678
4679                 conn = hci_conn_hash_lookup_handle(hdev, handle);
4680                 if (!conn)
4681                         continue;
4682
4683                 conn->sent -= count;
4684
4685                 switch (conn->type) {
4686                 case ACL_LINK:
4687                         hdev->acl_cnt += count;
4688                         if (hdev->acl_cnt > hdev->acl_pkts)
4689                                 hdev->acl_cnt = hdev->acl_pkts;
4690                         break;
4691
4692                 case LE_LINK:
4693                         if (hdev->le_pkts) {
4694                                 hdev->le_cnt += count;
4695                                 if (hdev->le_cnt > hdev->le_pkts)
4696                                         hdev->le_cnt = hdev->le_pkts;
4697                         } else {
4698                                 hdev->acl_cnt += count;
4699                                 if (hdev->acl_cnt > hdev->acl_pkts)
4700                                         hdev->acl_cnt = hdev->acl_pkts;
4701                         }
4702                         break;
4703
4704                 case SCO_LINK:
4705                         hdev->sco_cnt += count;
4706                         if (hdev->sco_cnt > hdev->sco_pkts)
4707                                 hdev->sco_cnt = hdev->sco_pkts;
4708                         break;
4709
4710                 case ISO_LINK:
4711                         if (hdev->iso_pkts) {
4712                                 hdev->iso_cnt += count;
4713                                 if (hdev->iso_cnt > hdev->iso_pkts)
4714                                         hdev->iso_cnt = hdev->iso_pkts;
4715                         } else if (hdev->le_pkts) {
4716                                 hdev->le_cnt += count;
4717                                 if (hdev->le_cnt > hdev->le_pkts)
4718                                         hdev->le_cnt = hdev->le_pkts;
4719                         } else {
4720                                 hdev->acl_cnt += count;
4721                                 if (hdev->acl_cnt > hdev->acl_pkts)
4722                                         hdev->acl_cnt = hdev->acl_pkts;
4723                         }
4724                         break;
4725
4726                 default:
4727                         bt_dev_err(hdev, "unknown type %d conn %p",
4728                                    conn->type, conn);
4729                         break;
4730                 }
4731         }
4732
4733         queue_work(hdev->workqueue, &hdev->tx_work);
4734 }
4735
4736 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
4737                                                  __u16 handle)
4738 {
4739         struct hci_chan *chan;
4740
4741         switch (hdev->dev_type) {
4742         case HCI_PRIMARY:
4743                 return hci_conn_hash_lookup_handle(hdev, handle);
4744         case HCI_AMP:
4745                 chan = hci_chan_lookup_handle(hdev, handle);
4746                 if (chan)
4747                         return chan->conn;
4748                 break;
4749         default:
4750                 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type);
4751                 break;
4752         }
4753
4754         return NULL;
4755 }
4756
4757 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data,
4758                                     struct sk_buff *skb)
4759 {
4760         struct hci_ev_num_comp_blocks *ev = data;
4761         int i;
4762
4763         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS,
4764                              flex_array_size(ev, handles, ev->num_hndl)))
4765                 return;
4766
4767         if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
4768                 bt_dev_err(hdev, "wrong event for mode %d",
4769                            hdev->flow_ctl_mode);
4770                 return;
4771         }
4772
4773         bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks,
4774                    ev->num_hndl);
4775
4776         for (i = 0; i < ev->num_hndl; i++) {
4777                 struct hci_comp_blocks_info *info = &ev->handles[i];
4778                 struct hci_conn *conn = NULL;
4779                 __u16  handle, block_count;
4780
4781                 handle = __le16_to_cpu(info->handle);
4782                 block_count = __le16_to_cpu(info->blocks);
4783
4784                 conn = __hci_conn_lookup_handle(hdev, handle);
4785                 if (!conn)
4786                         continue;
4787
4788                 conn->sent -= block_count;
4789
4790                 switch (conn->type) {
4791                 case ACL_LINK:
4792                 case AMP_LINK:
4793                         hdev->block_cnt += block_count;
4794                         if (hdev->block_cnt > hdev->num_blocks)
4795                                 hdev->block_cnt = hdev->num_blocks;
4796                         break;
4797
4798                 default:
4799                         bt_dev_err(hdev, "unknown type %d conn %p",
4800                                    conn->type, conn);
4801                         break;
4802                 }
4803         }
4804
4805         queue_work(hdev->workqueue, &hdev->tx_work);
4806 }
4807
4808 static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
4809                                 struct sk_buff *skb)
4810 {
4811         struct hci_ev_mode_change *ev = data;
4812         struct hci_conn *conn;
4813
4814         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
4815
4816         hci_dev_lock(hdev);
4817
4818         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
4819         if (conn) {
4820                 conn->mode = ev->mode;
4821
4822                 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
4823                                         &conn->flags)) {
4824                         if (conn->mode == HCI_CM_ACTIVE)
4825                                 set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4826                         else
4827                                 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
4828                 }
4829
4830                 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
4831                         hci_sco_setup(conn, ev->status);
4832         }
4833
4834         hci_dev_unlock(hdev);
4835 }
4836
4837 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data,
4838                                      struct sk_buff *skb)
4839 {
4840         struct hci_ev_pin_code_req *ev = data;
4841         struct hci_conn *conn;
4842
4843         bt_dev_dbg(hdev, "");
4844
4845         hci_dev_lock(hdev);
4846
4847         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4848         if (!conn)
4849                 goto unlock;
4850
4851         if (conn->state == BT_CONNECTED) {
4852                 hci_conn_hold(conn);
4853                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
4854                 hci_conn_drop(conn);
4855         }
4856
4857         if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
4858             !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
4859                 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
4860                              sizeof(ev->bdaddr), &ev->bdaddr);
4861         } else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
4862                 u8 secure;
4863
4864                 if (conn->pending_sec_level == BT_SECURITY_HIGH)
4865                         secure = 1;
4866                 else
4867                         secure = 0;
4868
4869                 mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
4870         }
4871
4872 unlock:
4873         hci_dev_unlock(hdev);
4874 }
4875
4876 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
4877 {
4878         if (key_type == HCI_LK_CHANGED_COMBINATION)
4879                 return;
4880
4881         conn->pin_length = pin_len;
4882         conn->key_type = key_type;
4883
4884         switch (key_type) {
4885         case HCI_LK_LOCAL_UNIT:
4886         case HCI_LK_REMOTE_UNIT:
4887         case HCI_LK_DEBUG_COMBINATION:
4888                 return;
4889         case HCI_LK_COMBINATION:
4890                 if (pin_len == 16)
4891                         conn->pending_sec_level = BT_SECURITY_HIGH;
4892                 else
4893                         conn->pending_sec_level = BT_SECURITY_MEDIUM;
4894                 break;
4895         case HCI_LK_UNAUTH_COMBINATION_P192:
4896         case HCI_LK_UNAUTH_COMBINATION_P256:
4897                 conn->pending_sec_level = BT_SECURITY_MEDIUM;
4898                 break;
4899         case HCI_LK_AUTH_COMBINATION_P192:
4900                 conn->pending_sec_level = BT_SECURITY_HIGH;
4901                 break;
4902         case HCI_LK_AUTH_COMBINATION_P256:
4903                 conn->pending_sec_level = BT_SECURITY_FIPS;
4904                 break;
4905         }
4906 }
4907
4908 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data,
4909                                      struct sk_buff *skb)
4910 {
4911         struct hci_ev_link_key_req *ev = data;
4912         struct hci_cp_link_key_reply cp;
4913         struct hci_conn *conn;
4914         struct link_key *key;
4915
4916         bt_dev_dbg(hdev, "");
4917
4918         if (!hci_dev_test_flag(hdev, HCI_MGMT))
4919                 return;
4920
4921         hci_dev_lock(hdev);
4922
4923         key = hci_find_link_key(hdev, &ev->bdaddr);
4924         if (!key) {
4925                 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr);
4926                 goto not_found;
4927         }
4928
4929         bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr);
4930
4931         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4932         if (conn) {
4933                 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4934
4935                 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
4936                      key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
4937                     conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
4938                         bt_dev_dbg(hdev, "ignoring unauthenticated key");
4939                         goto not_found;
4940                 }
4941
4942                 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
4943                     (conn->pending_sec_level == BT_SECURITY_HIGH ||
4944                      conn->pending_sec_level == BT_SECURITY_FIPS)) {
4945                         bt_dev_dbg(hdev, "ignoring key unauthenticated for high security");
4946                         goto not_found;
4947                 }
4948
4949                 conn_set_key(conn, key->type, key->pin_len);
4950         }
4951
4952         bacpy(&cp.bdaddr, &ev->bdaddr);
4953         memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
4954
4955         hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);
4956
4957         hci_dev_unlock(hdev);
4958
4959         return;
4960
4961 not_found:
4962         hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
4963         hci_dev_unlock(hdev);
4964 }
4965
4966 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data,
4967                                     struct sk_buff *skb)
4968 {
4969         struct hci_ev_link_key_notify *ev = data;
4970         struct hci_conn *conn;
4971         struct link_key *key;
4972         bool persistent;
4973         u8 pin_len = 0;
4974
4975         bt_dev_dbg(hdev, "");
4976
4977         hci_dev_lock(hdev);
4978
4979         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4980         if (!conn)
4981                 goto unlock;
4982
4983         /* Ignore NULL link key against CVE-2020-26555 */
4984         if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) {
4985                 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR",
4986                            &ev->bdaddr);
4987                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
4988                 hci_conn_drop(conn);
4989                 goto unlock;
4990         }
4991
4992         hci_conn_hold(conn);
4993         conn->disc_timeout = HCI_DISCONN_TIMEOUT;
4994         hci_conn_drop(conn);
4995
4996         set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
4997         conn_set_key(conn, ev->key_type, conn->pin_length);
4998
4999         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5000                 goto unlock;
5001
5002         key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
5003                                 ev->key_type, pin_len, &persistent);
5004         if (!key)
5005                 goto unlock;
5006
5007         /* Update connection information since adding the key will have
5008          * fixed up the type in the case of changed combination keys.
5009          */
5010         if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
5011                 conn_set_key(conn, key->type, key->pin_len);
5012
5013         mgmt_new_link_key(hdev, key, persistent);
5014
5015         /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
5016          * is set. If it's not set simply remove the key from the kernel
5017          * list (we've still notified user space about it but with
5018          * store_hint being 0).
5019          */
5020         if (key->type == HCI_LK_DEBUG_COMBINATION &&
5021             !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
5022                 list_del_rcu(&key->list);
5023                 kfree_rcu(key, rcu);
5024                 goto unlock;
5025         }
5026
5027         if (persistent)
5028                 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
5029         else
5030                 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
5031
5032 unlock:
5033         hci_dev_unlock(hdev);
5034 }
5035
5036 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data,
5037                                  struct sk_buff *skb)
5038 {
5039         struct hci_ev_clock_offset *ev = data;
5040         struct hci_conn *conn;
5041
5042         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5043
5044         hci_dev_lock(hdev);
5045
5046         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5047         if (conn && !ev->status) {
5048                 struct inquiry_entry *ie;
5049
5050                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
5051                 if (ie) {
5052                         ie->data.clock_offset = ev->clock_offset;
5053                         ie->timestamp = jiffies;
5054                 }
5055         }
5056
5057         hci_dev_unlock(hdev);
5058 }
5059
5060 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data,
5061                                     struct sk_buff *skb)
5062 {
5063         struct hci_ev_pkt_type_change *ev = data;
5064         struct hci_conn *conn;
5065
5066         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5067
5068         hci_dev_lock(hdev);
5069
5070         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5071         if (conn && !ev->status)
5072                 conn->pkt_type = __le16_to_cpu(ev->pkt_type);
5073
5074         hci_dev_unlock(hdev);
5075 }
5076
5077 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data,
5078                                    struct sk_buff *skb)
5079 {
5080         struct hci_ev_pscan_rep_mode *ev = data;
5081         struct inquiry_entry *ie;
5082
5083         bt_dev_dbg(hdev, "");
5084
5085         hci_dev_lock(hdev);
5086
5087         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5088         if (ie) {
5089                 ie->data.pscan_rep_mode = ev->pscan_rep_mode;
5090                 ie->timestamp = jiffies;
5091         }
5092
5093         hci_dev_unlock(hdev);
5094 }
5095
5096 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata,
5097                                              struct sk_buff *skb)
5098 {
5099         struct hci_ev_inquiry_result_rssi *ev = edata;
5100         struct inquiry_data data;
5101         int i;
5102
5103         bt_dev_dbg(hdev, "num_rsp %d", ev->num);
5104
5105         if (!ev->num)
5106                 return;
5107
5108         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5109                 return;
5110
5111         hci_dev_lock(hdev);
5112
5113         if (skb->len == array_size(ev->num,
5114                                    sizeof(struct inquiry_info_rssi_pscan))) {
5115                 struct inquiry_info_rssi_pscan *info;
5116
5117                 for (i = 0; i < ev->num; i++) {
5118                         u32 flags;
5119
5120                         info = hci_ev_skb_pull(hdev, skb,
5121                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
5122                                                sizeof(*info));
5123                         if (!info) {
5124                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5125                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5126                                 goto unlock;
5127                         }
5128
5129                         bacpy(&data.bdaddr, &info->bdaddr);
5130                         data.pscan_rep_mode     = info->pscan_rep_mode;
5131                         data.pscan_period_mode  = info->pscan_period_mode;
5132                         data.pscan_mode         = info->pscan_mode;
5133                         memcpy(data.dev_class, info->dev_class, 3);
5134                         data.clock_offset       = info->clock_offset;
5135                         data.rssi               = info->rssi;
5136                         data.ssp_mode           = 0x00;
5137
5138                         flags = hci_inquiry_cache_update(hdev, &data, false);
5139
5140                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5141                                           info->dev_class, info->rssi,
5142                                           flags, NULL, 0, NULL, 0, 0);
5143                 }
5144         } else if (skb->len == array_size(ev->num,
5145                                           sizeof(struct inquiry_info_rssi))) {
5146                 struct inquiry_info_rssi *info;
5147
5148                 for (i = 0; i < ev->num; i++) {
5149                         u32 flags;
5150
5151                         info = hci_ev_skb_pull(hdev, skb,
5152                                                HCI_EV_INQUIRY_RESULT_WITH_RSSI,
5153                                                sizeof(*info));
5154                         if (!info) {
5155                                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5156                                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5157                                 goto unlock;
5158                         }
5159
5160                         bacpy(&data.bdaddr, &info->bdaddr);
5161                         data.pscan_rep_mode     = info->pscan_rep_mode;
5162                         data.pscan_period_mode  = info->pscan_period_mode;
5163                         data.pscan_mode         = 0x00;
5164                         memcpy(data.dev_class, info->dev_class, 3);
5165                         data.clock_offset       = info->clock_offset;
5166                         data.rssi               = info->rssi;
5167                         data.ssp_mode           = 0x00;
5168
5169                         flags = hci_inquiry_cache_update(hdev, &data, false);
5170
5171                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5172                                           info->dev_class, info->rssi,
5173                                           flags, NULL, 0, NULL, 0, 0);
5174                 }
5175         } else {
5176                 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x",
5177                            HCI_EV_INQUIRY_RESULT_WITH_RSSI);
5178         }
5179 unlock:
5180         hci_dev_unlock(hdev);
5181 }
5182
5183 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data,
5184                                         struct sk_buff *skb)
5185 {
5186         struct hci_ev_remote_ext_features *ev = data;
5187         struct hci_conn *conn;
5188
5189         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
5190
5191         hci_dev_lock(hdev);
5192
5193         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5194         if (!conn)
5195                 goto unlock;
5196
5197         if (ev->page < HCI_MAX_PAGES)
5198                 memcpy(conn->features[ev->page], ev->features, 8);
5199
5200         if (!ev->status && ev->page == 0x01) {
5201                 struct inquiry_entry *ie;
5202
5203                 ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
5204                 if (ie)
5205                         ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5206
5207                 if (ev->features[0] & LMP_HOST_SSP) {
5208                         set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5209                 } else {
5210                         /* It is mandatory by the Bluetooth specification that
5211                          * Extended Inquiry Results are only used when Secure
5212                          * Simple Pairing is enabled, but some devices violate
5213                          * this.
5214                          *
5215                          * To make these devices work, the internal SSP
5216                          * enabled flag needs to be cleared if the remote host
5217                          * features do not indicate SSP support */
5218                         clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
5219                 }
5220
5221                 if (ev->features[0] & LMP_HOST_SC)
5222                         set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
5223         }
5224
5225         if (conn->state != BT_CONFIG)
5226                 goto unlock;
5227
5228         if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
5229                 struct hci_cp_remote_name_req cp;
5230                 memset(&cp, 0, sizeof(cp));
5231                 bacpy(&cp.bdaddr, &conn->dst);
5232                 cp.pscan_rep_mode = 0x02;
5233                 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
5234         } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
5235                 mgmt_device_connected(hdev, conn, NULL, 0);
5236
5237         if (!hci_outgoing_auth_needed(hdev, conn)) {
5238                 conn->state = BT_CONNECTED;
5239                 hci_connect_cfm(conn, ev->status);
5240                 hci_conn_drop(conn);
5241         }
5242
5243 unlock:
5244         hci_dev_unlock(hdev);
5245 }
5246
5247 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
5248                                        struct sk_buff *skb)
5249 {
5250         struct hci_ev_sync_conn_complete *ev = data;
5251         struct hci_conn *conn;
5252         u8 status = ev->status;
5253
5254         switch (ev->link_type) {
5255         case SCO_LINK:
5256         case ESCO_LINK:
5257                 break;
5258         default:
5259                 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type
5260                  * for HCI_Synchronous_Connection_Complete is limited to
5261                  * either SCO or eSCO
5262                  */
5263                 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type");
5264                 return;
5265         }
5266
5267         bt_dev_dbg(hdev, "status 0x%2.2x", status);
5268
5269         hci_dev_lock(hdev);
5270
5271         conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
5272         if (!conn) {
5273                 if (ev->link_type == ESCO_LINK)
5274                         goto unlock;
5275
5276                 /* When the link type in the event indicates SCO connection
5277                  * and lookup of the connection object fails, then check
5278                  * if an eSCO connection object exists.
5279                  *
5280                  * The core limits the synchronous connections to either
5281                  * SCO or eSCO. The eSCO connection is preferred and tried
5282                  * to be setup first and until successfully established,
5283                  * the link type will be hinted as eSCO.
5284                  */
5285                 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
5286                 if (!conn)
5287                         goto unlock;
5288         }
5289
5290         /* The HCI_Synchronous_Connection_Complete event is only sent once per connection.
5291          * Processing it more than once per connection can corrupt kernel memory.
5292          *
5293          * As the connection handle is set here for the first time, it indicates
5294          * whether the connection is already set up.
5295          */
5296         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
5297                 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
5298                 goto unlock;
5299         }
5300
5301         switch (status) {
5302         case 0x00:
5303                 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
5304                 if (status) {
5305                         conn->state = BT_CLOSED;
5306                         break;
5307                 }
5308
5309                 conn->state  = BT_CONNECTED;
5310                 conn->type   = ev->link_type;
5311
5312                 hci_debugfs_create_conn(conn);
5313                 hci_conn_add_sysfs(conn);
5314                 break;
5315
5316         case 0x10:      /* Connection Accept Timeout */
5317         case 0x0d:      /* Connection Rejected due to Limited Resources */
5318         case 0x11:      /* Unsupported Feature or Parameter Value */
5319         case 0x1c:      /* SCO interval rejected */
5320         case 0x1a:      /* Unsupported Remote Feature */
5321         case 0x1e:      /* Invalid LMP Parameters */
5322         case 0x1f:      /* Unspecified error */
5323         case 0x20:      /* Unsupported LMP Parameter value */
5324                 if (conn->out) {
5325                         conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
5326                                         (hdev->esco_type & EDR_ESCO_MASK);
5327                         if (hci_setup_sync(conn, conn->parent->handle))
5328                                 goto unlock;
5329                 }
5330                 fallthrough;
5331
5332         default:
5333                 conn->state = BT_CLOSED;
5334                 break;
5335         }
5336
5337         bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode);
5338         /* Notify only in case of SCO over HCI transport data path which
5339          * is zero and non-zero value shall be non-HCI transport data path
5340          */
5341         if (conn->codec.data_path == 0 && hdev->notify) {
5342                 switch (ev->air_mode) {
5343                 case 0x02:
5344                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD);
5345                         break;
5346                 case 0x03:
5347                         hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP);
5348                         break;
5349                 }
5350         }
5351
5352         hci_connect_cfm(conn, status);
5353         if (status)
5354                 hci_conn_del(conn);
5355
5356 unlock:
5357         hci_dev_unlock(hdev);
5358 }
5359
5360 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
5361 {
5362         size_t parsed = 0;
5363
5364         while (parsed < eir_len) {
5365                 u8 field_len = eir[0];
5366
5367                 if (field_len == 0)
5368                         return parsed;
5369
5370                 parsed += field_len + 1;
5371                 eir += field_len + 1;
5372         }
5373
5374         return eir_len;
5375 }
5376
5377 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata,
5378                                             struct sk_buff *skb)
5379 {
5380         struct hci_ev_ext_inquiry_result *ev = edata;
5381         struct inquiry_data data;
5382         size_t eir_len;
5383         int i;
5384
5385         if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT,
5386                              flex_array_size(ev, info, ev->num)))
5387                 return;
5388
5389         bt_dev_dbg(hdev, "num %d", ev->num);
5390
5391         if (!ev->num)
5392                 return;
5393
5394         if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
5395                 return;
5396
5397         hci_dev_lock(hdev);
5398
5399         for (i = 0; i < ev->num; i++) {
5400                 struct extended_inquiry_info *info = &ev->info[i];
5401                 u32 flags;
5402                 bool name_known;
5403
5404                 bacpy(&data.bdaddr, &info->bdaddr);
5405                 data.pscan_rep_mode     = info->pscan_rep_mode;
5406                 data.pscan_period_mode  = info->pscan_period_mode;
5407                 data.pscan_mode         = 0x00;
5408                 memcpy(data.dev_class, info->dev_class, 3);
5409                 data.clock_offset       = info->clock_offset;
5410                 data.rssi               = info->rssi;
5411                 data.ssp_mode           = 0x01;
5412
5413                 if (hci_dev_test_flag(hdev, HCI_MGMT))
5414                         name_known = eir_get_data(info->data,
5415                                                   sizeof(info->data),
5416                                                   EIR_NAME_COMPLETE, NULL);
5417                 else
5418                         name_known = true;
5419
5420                 flags = hci_inquiry_cache_update(hdev, &data, name_known);
5421
5422                 eir_len = eir_get_length(info->data, sizeof(info->data));
5423
5424                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
5425                                   info->dev_class, info->rssi,
5426                                   flags, info->data, eir_len, NULL, 0, 0);
5427         }
5428
5429         hci_dev_unlock(hdev);
5430 }
5431
5432 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data,
5433                                          struct sk_buff *skb)
5434 {
5435         struct hci_ev_key_refresh_complete *ev = data;
5436         struct hci_conn *conn;
5437
5438         bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status,
5439                    __le16_to_cpu(ev->handle));
5440
5441         hci_dev_lock(hdev);
5442
5443         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5444         if (!conn)
5445                 goto unlock;
5446
5447         /* For BR/EDR the necessary steps are taken through the
5448          * auth_complete event.
5449          */
5450         if (conn->type != LE_LINK)
5451                 goto unlock;
5452
5453         if (!ev->status)
5454                 conn->sec_level = conn->pending_sec_level;
5455
5456         clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
5457
5458         if (ev->status && conn->state == BT_CONNECTED) {
5459                 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
5460                 hci_conn_drop(conn);
5461                 goto unlock;
5462         }
5463
5464         if (conn->state == BT_CONFIG) {
5465                 if (!ev->status)
5466                         conn->state = BT_CONNECTED;
5467
5468                 hci_connect_cfm(conn, ev->status);
5469                 hci_conn_drop(conn);
5470         } else {
5471                 hci_auth_cfm(conn, ev->status);
5472
5473                 hci_conn_hold(conn);
5474                 conn->disc_timeout = HCI_DISCONN_TIMEOUT;
5475                 hci_conn_drop(conn);
5476         }
5477
5478 unlock:
5479         hci_dev_unlock(hdev);
5480 }
5481
5482 static u8 hci_get_auth_req(struct hci_conn *conn)
5483 {
5484 #ifdef TIZEN_BT
5485         if (conn->remote_auth == HCI_AT_GENERAL_BONDING_MITM) {
5486                 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5487                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5488                         return HCI_AT_GENERAL_BONDING_MITM;
5489         }
5490 #endif
5491
5492         /* If remote requests no-bonding follow that lead */
5493         if (conn->remote_auth == HCI_AT_NO_BONDING ||
5494             conn->remote_auth == HCI_AT_NO_BONDING_MITM)
5495                 return conn->remote_auth | (conn->auth_type & 0x01);
5496
5497         /* If both remote and local have enough IO capabilities, require
5498          * MITM protection
5499          */
5500         if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
5501             conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
5502                 return conn->remote_auth | 0x01;
5503
5504         /* No MITM protection possible so ignore remote requirement */
5505         return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
5506 }
5507
5508 static u8 bredr_oob_data_present(struct hci_conn *conn)
5509 {
5510         struct hci_dev *hdev = conn->hdev;
5511         struct oob_data *data;
5512
5513         data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
5514         if (!data)
5515                 return 0x00;
5516
5517         if (bredr_sc_enabled(hdev)) {
5518                 /* When Secure Connections is enabled, then just
5519                  * return the present value stored with the OOB
5520                  * data. The stored value contains the right present
5521                  * information. However it can only be trusted when
5522                  * not in Secure Connection Only mode.
5523                  */
5524                 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
5525                         return data->present;
5526
5527                 /* When Secure Connections Only mode is enabled, then
5528                  * the P-256 values are required. If they are not
5529                  * available, then do not declare that OOB data is
5530                  * present.
5531                  */
5532                 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) ||
5533                     !crypto_memneq(data->hash256, ZERO_KEY, 16))
5534                         return 0x00;
5535
5536                 return 0x02;
5537         }
5538
5539         /* When Secure Connections is not enabled or actually
5540          * not supported by the hardware, then check that if
5541          * P-192 data values are present.
5542          */
5543         if (!crypto_memneq(data->rand192, ZERO_KEY, 16) ||
5544             !crypto_memneq(data->hash192, ZERO_KEY, 16))
5545                 return 0x00;
5546
5547         return 0x01;
5548 }
5549
5550 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
5551                                     struct sk_buff *skb)
5552 {
5553         struct hci_ev_io_capa_request *ev = data;
5554         struct hci_conn *conn;
5555
5556         bt_dev_dbg(hdev, "");
5557
5558         hci_dev_lock(hdev);
5559
5560         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5561         if (!conn || !hci_conn_ssp_enabled(conn))
5562                 goto unlock;
5563
5564         hci_conn_hold(conn);
5565
5566         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5567                 goto unlock;
5568
5569         /* Allow pairing if we're pairable, the initiators of the
5570          * pairing or if the remote is not requesting bonding.
5571          */
5572         if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
5573             test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
5574             (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
5575                 struct hci_cp_io_capability_reply cp;
5576
5577                 bacpy(&cp.bdaddr, &ev->bdaddr);
5578                 /* Change the IO capability from KeyboardDisplay
5579                  * to DisplayYesNo as it is not supported by BT spec. */
5580                 cp.capability = (conn->io_capability == 0x04) ?
5581                                 HCI_IO_DISPLAY_YESNO : conn->io_capability;
5582
5583                 /* If we are initiators, there is no remote information yet */
5584                 if (conn->remote_auth == 0xff) {
5585                         /* Request MITM protection if our IO caps allow it
5586                          * except for the no-bonding case.
5587                          */
5588                         if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5589                             conn->auth_type != HCI_AT_NO_BONDING)
5590                                 conn->auth_type |= 0x01;
5591                 } else {
5592                         conn->auth_type = hci_get_auth_req(conn);
5593                 }
5594
5595                 /* If we're not bondable, force one of the non-bondable
5596                  * authentication requirement values.
5597                  */
5598                 if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
5599                         conn->auth_type &= HCI_AT_NO_BONDING_MITM;
5600
5601                 cp.authentication = conn->auth_type;
5602                 cp.oob_data = bredr_oob_data_present(conn);
5603
5604                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
5605                              sizeof(cp), &cp);
5606         } else {
5607                 struct hci_cp_io_capability_neg_reply cp;
5608
5609                 bacpy(&cp.bdaddr, &ev->bdaddr);
5610                 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
5611
5612                 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
5613                              sizeof(cp), &cp);
5614         }
5615
5616 unlock:
5617         hci_dev_unlock(hdev);
5618 }
5619
5620 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data,
5621                                   struct sk_buff *skb)
5622 {
5623         struct hci_ev_io_capa_reply *ev = data;
5624         struct hci_conn *conn;
5625
5626         bt_dev_dbg(hdev, "");
5627
5628         hci_dev_lock(hdev);
5629
5630         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5631         if (!conn)
5632                 goto unlock;
5633
5634         conn->remote_cap = ev->capability;
5635         conn->remote_auth = ev->authentication;
5636
5637 unlock:
5638         hci_dev_unlock(hdev);
5639 }
5640
5641 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data,
5642                                          struct sk_buff *skb)
5643 {
5644         struct hci_ev_user_confirm_req *ev = data;
5645         int loc_mitm, rem_mitm, confirm_hint = 0;
5646         struct hci_conn *conn;
5647
5648         bt_dev_dbg(hdev, "");
5649
5650         hci_dev_lock(hdev);
5651
5652         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5653                 goto unlock;
5654
5655         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5656         if (!conn)
5657                 goto unlock;
5658
5659         loc_mitm = (conn->auth_type & 0x01);
5660         rem_mitm = (conn->remote_auth & 0x01);
5661
5662         /* If we require MITM but the remote device can't provide that
5663          * (it has NoInputNoOutput) then reject the confirmation
5664          * request. We check the security level here since it doesn't
5665          * necessarily match conn->auth_type.
5666          */
5667         if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
5668             conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
5669                 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM");
5670                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
5671                              sizeof(ev->bdaddr), &ev->bdaddr);
5672                 goto unlock;
5673         }
5674
5675         /* If no side requires MITM protection; auto-accept */
5676         if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
5677             (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
5678
5679                 /* If we're not the initiators request authorization to
5680                  * proceed from user space (mgmt_user_confirm with
5681                  * confirm_hint set to 1). The exception is if neither
5682                  * side had MITM or if the local IO capability is
5683                  * NoInputNoOutput, in which case we do auto-accept
5684                  */
5685                 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
5686                     conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
5687                     (loc_mitm || rem_mitm)) {
5688                         bt_dev_dbg(hdev, "Confirming auto-accept as acceptor");
5689                         confirm_hint = 1;
5690                         goto confirm;
5691                 }
5692
5693                 /* If there already exists link key in local host, leave the
5694                  * decision to user space since the remote device could be
5695                  * legitimate or malicious.
5696                  */
5697                 if (hci_find_link_key(hdev, &ev->bdaddr)) {
5698                         bt_dev_dbg(hdev, "Local host already has link key");
5699                         confirm_hint = 1;
5700                         goto confirm;
5701                 }
5702
5703                 BT_DBG("Auto-accept of user confirmation with %ums delay",
5704                        hdev->auto_accept_delay);
5705
5706                 if (hdev->auto_accept_delay > 0) {
5707                         int delay = msecs_to_jiffies(hdev->auto_accept_delay);
5708                         queue_delayed_work(conn->hdev->workqueue,
5709                                            &conn->auto_accept_work, delay);
5710                         goto unlock;
5711                 }
5712
5713                 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
5714                              sizeof(ev->bdaddr), &ev->bdaddr);
5715                 goto unlock;
5716         }
5717
5718 confirm:
5719         mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
5720                                   le32_to_cpu(ev->passkey), confirm_hint);
5721
5722 unlock:
5723         hci_dev_unlock(hdev);
5724 }
5725
5726 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data,
5727                                          struct sk_buff *skb)
5728 {
5729         struct hci_ev_user_passkey_req *ev = data;
5730
5731         bt_dev_dbg(hdev, "");
5732
5733         if (hci_dev_test_flag(hdev, HCI_MGMT))
5734                 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
5735 }
5736
5737 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data,
5738                                         struct sk_buff *skb)
5739 {
5740         struct hci_ev_user_passkey_notify *ev = data;
5741         struct hci_conn *conn;
5742
5743         bt_dev_dbg(hdev, "");
5744
5745         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5746         if (!conn)
5747                 return;
5748
5749         conn->passkey_notify = __le32_to_cpu(ev->passkey);
5750         conn->passkey_entered = 0;
5751
5752         if (hci_dev_test_flag(hdev, HCI_MGMT))
5753                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5754                                          conn->dst_type, conn->passkey_notify,
5755                                          conn->passkey_entered);
5756 }
5757
5758 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data,
5759                                     struct sk_buff *skb)
5760 {
5761         struct hci_ev_keypress_notify *ev = data;
5762         struct hci_conn *conn;
5763
5764         bt_dev_dbg(hdev, "");
5765
5766         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5767         if (!conn)
5768                 return;
5769
5770         switch (ev->type) {
5771         case HCI_KEYPRESS_STARTED:
5772                 conn->passkey_entered = 0;
5773                 return;
5774
5775         case HCI_KEYPRESS_ENTERED:
5776                 conn->passkey_entered++;
5777                 break;
5778
5779         case HCI_KEYPRESS_ERASED:
5780                 conn->passkey_entered--;
5781                 break;
5782
5783         case HCI_KEYPRESS_CLEARED:
5784                 conn->passkey_entered = 0;
5785                 break;
5786
5787         case HCI_KEYPRESS_COMPLETED:
5788                 return;
5789         }
5790
5791         if (hci_dev_test_flag(hdev, HCI_MGMT))
5792                 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
5793                                          conn->dst_type, conn->passkey_notify,
5794                                          conn->passkey_entered);
5795 }
5796
5797 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data,
5798                                          struct sk_buff *skb)
5799 {
5800         struct hci_ev_simple_pair_complete *ev = data;
5801         struct hci_conn *conn;
5802
5803         bt_dev_dbg(hdev, "");
5804
5805         hci_dev_lock(hdev);
5806
5807         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5808         if (!conn || !hci_conn_ssp_enabled(conn))
5809                 goto unlock;
5810
5811         /* Reset the authentication requirement to unknown */
5812         conn->remote_auth = 0xff;
5813
5814         /* To avoid duplicate auth_failed events to user space we check
5815          * the HCI_CONN_AUTH_PEND flag which will be set if we
5816          * initiated the authentication. A traditional auth_complete
5817          * event gets always produced as initiator and is also mapped to
5818          * the mgmt_auth_failed event */
5819         if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
5820                 mgmt_auth_failed(conn, ev->status);
5821
5822         hci_conn_drop(conn);
5823
5824 unlock:
5825         hci_dev_unlock(hdev);
5826 }
5827
5828 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data,
5829                                          struct sk_buff *skb)
5830 {
5831         struct hci_ev_remote_host_features *ev = data;
5832         struct inquiry_entry *ie;
5833         struct hci_conn *conn;
5834
5835         bt_dev_dbg(hdev, "");
5836
5837         hci_dev_lock(hdev);
5838
5839         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
5840         if (conn)
5841                 memcpy(conn->features[1], ev->features, 8);
5842
5843         ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
5844         if (ie)
5845                 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
5846
5847         hci_dev_unlock(hdev);
5848 }
5849
5850 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata,
5851                                             struct sk_buff *skb)
5852 {
5853         struct hci_ev_remote_oob_data_request *ev = edata;
5854         struct oob_data *data;
5855
5856         bt_dev_dbg(hdev, "");
5857
5858         hci_dev_lock(hdev);
5859
5860         if (!hci_dev_test_flag(hdev, HCI_MGMT))
5861                 goto unlock;
5862
5863         data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
5864         if (!data) {
5865                 struct hci_cp_remote_oob_data_neg_reply cp;
5866
5867                 bacpy(&cp.bdaddr, &ev->bdaddr);
5868                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
5869                              sizeof(cp), &cp);
5870                 goto unlock;
5871         }
5872
5873         if (bredr_sc_enabled(hdev)) {
5874                 struct hci_cp_remote_oob_ext_data_reply cp;
5875
5876                 bacpy(&cp.bdaddr, &ev->bdaddr);
5877                 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
5878                         memset(cp.hash192, 0, sizeof(cp.hash192));
5879                         memset(cp.rand192, 0, sizeof(cp.rand192));
5880                 } else {
5881                         memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
5882                         memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
5883                 }
5884                 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
5885                 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));
5886
5887                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
5888                              sizeof(cp), &cp);
5889         } else {
5890                 struct hci_cp_remote_oob_data_reply cp;
5891
5892                 bacpy(&cp.bdaddr, &ev->bdaddr);
5893                 memcpy(cp.hash, data->hash192, sizeof(cp.hash));
5894                 memcpy(cp.rand, data->rand192, sizeof(cp.rand));
5895
5896                 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
5897                              sizeof(cp), &cp);
5898         }
5899
5900 unlock:
5901         hci_dev_unlock(hdev);
5902 }
5903
5904 #if IS_ENABLED(CONFIG_BT_HS)
5905 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data,
5906                                   struct sk_buff *skb)
5907 {
5908         struct hci_ev_channel_selected *ev = data;
5909         struct hci_conn *hcon;
5910
5911         bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle);
5912
5913         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5914         if (!hcon)
5915                 return;
5916
5917         amp_read_loc_assoc_final_data(hdev, hcon);
5918 }
5919
5920 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data,
5921                                       struct sk_buff *skb)
5922 {
5923         struct hci_ev_phy_link_complete *ev = data;
5924         struct hci_conn *hcon, *bredr_hcon;
5925
5926         bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle,
5927                    ev->status);
5928
5929         hci_dev_lock(hdev);
5930
5931         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5932         if (!hcon)
5933                 goto unlock;
5934
5935         if (!hcon->amp_mgr)
5936                 goto unlock;
5937
5938         if (ev->status) {
5939                 hci_conn_del(hcon);
5940                 goto unlock;
5941         }
5942
5943         bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;
5944
5945         hcon->state = BT_CONNECTED;
5946         bacpy(&hcon->dst, &bredr_hcon->dst);
5947
5948         hci_conn_hold(hcon);
5949         hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
5950         hci_conn_drop(hcon);
5951
5952         hci_debugfs_create_conn(hcon);
5953         hci_conn_add_sysfs(hcon);
5954
5955         amp_physical_cfm(bredr_hcon, hcon);
5956
5957 unlock:
5958         hci_dev_unlock(hdev);
5959 }
5960
5961 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data,
5962                                      struct sk_buff *skb)
5963 {
5964         struct hci_ev_logical_link_complete *ev = data;
5965         struct hci_conn *hcon;
5966         struct hci_chan *hchan;
5967         struct amp_mgr *mgr;
5968
5969         bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
5970                    le16_to_cpu(ev->handle), ev->phy_handle, ev->status);
5971
5972         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
5973         if (!hcon)
5974                 return;
5975
5976         /* Create AMP hchan */
5977         hchan = hci_chan_create(hcon);
5978         if (!hchan)
5979                 return;
5980
5981         hchan->handle = le16_to_cpu(ev->handle);
5982         hchan->amp = true;
5983
5984         BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);
5985
5986         mgr = hcon->amp_mgr;
5987         if (mgr && mgr->bredr_chan) {
5988                 struct l2cap_chan *bredr_chan = mgr->bredr_chan;
5989
5990                 l2cap_chan_lock(bredr_chan);
5991
5992                 bredr_chan->conn->mtu = hdev->block_mtu;
5993                 l2cap_logical_cfm(bredr_chan, hchan, 0);
5994                 hci_conn_hold(hcon);
5995
5996                 l2cap_chan_unlock(bredr_chan);
5997         }
5998 }
5999
6000 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data,
6001                                              struct sk_buff *skb)
6002 {
6003         struct hci_ev_disconn_logical_link_complete *ev = data;
6004         struct hci_chan *hchan;
6005
6006         bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x",
6007                    le16_to_cpu(ev->handle), ev->status);
6008
6009         if (ev->status)
6010                 return;
6011
6012         hci_dev_lock(hdev);
6013
6014         hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
6015         if (!hchan || !hchan->amp)
6016                 goto unlock;
6017
6018         amp_destroy_logical_link(hchan, ev->reason);
6019
6020 unlock:
6021         hci_dev_unlock(hdev);
6022 }
6023
6024 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data,
6025                                              struct sk_buff *skb)
6026 {
6027         struct hci_ev_disconn_phy_link_complete *ev = data;
6028         struct hci_conn *hcon;
6029
6030         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6031
6032         if (ev->status)
6033                 return;
6034
6035         hci_dev_lock(hdev);
6036
6037         hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
6038         if (hcon && hcon->type == AMP_LINK) {
6039                 hcon->state = BT_CLOSED;
6040                 hci_disconn_cfm(hcon, ev->reason);
6041                 hci_conn_del(hcon);
6042         }
6043
6044         hci_dev_unlock(hdev);
6045 }
6046 #endif
6047
6048 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
6049                                 u8 bdaddr_type, bdaddr_t *local_rpa)
6050 {
6051         if (conn->out) {
6052                 conn->dst_type = bdaddr_type;
6053                 conn->resp_addr_type = bdaddr_type;
6054                 bacpy(&conn->resp_addr, bdaddr);
6055
6056                 /* Check if the controller has set a Local RPA then it must be
6057                  * used instead or hdev->rpa.
6058                  */
6059                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
6060                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
6061                         bacpy(&conn->init_addr, local_rpa);
6062                 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
6063                         conn->init_addr_type = ADDR_LE_DEV_RANDOM;
6064                         bacpy(&conn->init_addr, &conn->hdev->rpa);
6065                 } else {
6066                         hci_copy_identity_address(conn->hdev, &conn->init_addr,
6067                                                   &conn->init_addr_type);
6068                 }
6069         } else {
6070                 conn->resp_addr_type = conn->hdev->adv_addr_type;
6071                 /* Check if the controller has set a Local RPA then it must be
6072                  * used instead or hdev->rpa.
6073                  */
6074                 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
6075                         conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
6076                         bacpy(&conn->resp_addr, local_rpa);
6077                 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
6078                         /* In case of ext adv, resp_addr will be updated in
6079                          * Adv Terminated event.
6080                          */
6081                         if (!ext_adv_capable(conn->hdev))
6082                                 bacpy(&conn->resp_addr,
6083                                       &conn->hdev->random_addr);
6084                 } else {
6085                         bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
6086                 }
6087
6088                 conn->init_addr_type = bdaddr_type;
6089                 bacpy(&conn->init_addr, bdaddr);
6090
6091                 /* For incoming connections, set the default minimum
6092                  * and maximum connection interval. They will be used
6093                  * to check if the parameters are in range and if not
6094                  * trigger the connection update procedure.
6095                  */
6096                 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
6097                 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
6098         }
6099 }
6100
6101 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
6102                                  bdaddr_t *bdaddr, u8 bdaddr_type,
6103                                  bdaddr_t *local_rpa, u8 role, u16 handle,
6104                                  u16 interval, u16 latency,
6105                                  u16 supervision_timeout)
6106 {
6107         struct hci_conn_params *params;
6108         struct hci_conn *conn;
6109         struct smp_irk *irk;
6110         u8 addr_type;
6111
6112         hci_dev_lock(hdev);
6113
6114         /* All controllers implicitly stop advertising in the event of a
6115          * connection, so ensure that the state bit is cleared.
6116          */
6117         hci_dev_clear_flag(hdev, HCI_LE_ADV);
6118
6119         conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
6120         if (!conn) {
6121                 /* In case of error status and there is no connection pending
6122                  * just unlock as there is nothing to cleanup.
6123                  */
6124                 if (status)
6125                         goto unlock;
6126
6127                 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role);
6128                 if (!conn) {
6129                         bt_dev_err(hdev, "no memory for new connection");
6130                         goto unlock;
6131                 }
6132
6133                 conn->dst_type = bdaddr_type;
6134
6135                 /* If we didn't have a hci_conn object previously
6136                  * but we're in central role this must be something
6137                  * initiated using an accept list. Since accept list based
6138                  * connections are not "first class citizens" we don't
6139                  * have full tracking of them. Therefore, we go ahead
6140                  * with a "best effort" approach of determining the
6141                  * initiator address based on the HCI_PRIVACY flag.
6142                  */
6143                 if (conn->out) {
6144                         conn->resp_addr_type = bdaddr_type;
6145                         bacpy(&conn->resp_addr, bdaddr);
6146                         if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
6147                                 conn->init_addr_type = ADDR_LE_DEV_RANDOM;
6148                                 bacpy(&conn->init_addr, &hdev->rpa);
6149                         } else {
6150                                 hci_copy_identity_address(hdev,
6151                                                           &conn->init_addr,
6152                                                           &conn->init_addr_type);
6153                         }
6154                 }
6155         } else {
6156 #ifdef TIZEN_BT
6157                 /* LE auto connect */
6158                 bacpy(&conn->dst, bdaddr);
6159 #endif
6160                 cancel_delayed_work(&conn->le_conn_timeout);
6161         }
6162
6163         /* The HCI_LE_Connection_Complete event is only sent once per connection.
6164          * Processing it more than once per connection can corrupt kernel memory.
6165          *
6166          * As the connection handle is set here for the first time, it indicates
6167          * whether the connection is already set up.
6168          */
6169         if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
6170                 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
6171                 goto unlock;
6172         }
6173
6174         le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
6175
6176         /* Lookup the identity address from the stored connection
6177          * address and address type.
6178          *
6179          * When establishing connections to an identity address, the
6180          * connection procedure will store the resolvable random
6181          * address first. Now if it can be converted back into the
6182          * identity address, start using the identity address from
6183          * now on.
6184          */
6185         irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
6186         if (irk) {
6187                 bacpy(&conn->dst, &irk->bdaddr);
6188                 conn->dst_type = irk->addr_type;
6189         }
6190
6191         conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
6192
6193         /* All connection failure handling is taken care of by the
6194          * hci_conn_failed function which is triggered by the HCI
6195          * request completion callbacks used for connecting.
6196          */
6197         if (status || hci_conn_set_handle(conn, handle))
6198                 goto unlock;
6199
6200         /* Drop the connection if it has been aborted */
6201         if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
6202                 hci_conn_drop(conn);
6203                 goto unlock;
6204         }
6205
6206         if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
6207                 addr_type = BDADDR_LE_PUBLIC;
6208         else
6209                 addr_type = BDADDR_LE_RANDOM;
6210
6211         /* Drop the connection if the device is blocked */
6212         if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) {
6213                 hci_conn_drop(conn);
6214                 goto unlock;
6215         }
6216
6217         if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
6218                 mgmt_device_connected(hdev, conn, NULL, 0);
6219
6220         conn->sec_level = BT_SECURITY_LOW;
6221         conn->state = BT_CONFIG;
6222
6223         /* Store current advertising instance as connection advertising instance
6224          * when sotfware rotation is in use so it can be re-enabled when
6225          * disconnected.
6226          */
6227         if (!ext_adv_capable(hdev))
6228                 conn->adv_instance = hdev->cur_adv_instance;
6229
6230         conn->le_conn_interval = interval;
6231         conn->le_conn_latency = latency;
6232         conn->le_supv_timeout = supervision_timeout;
6233
6234         hci_debugfs_create_conn(conn);
6235         hci_conn_add_sysfs(conn);
6236
6237         /* The remote features procedure is defined for central
6238          * role only. So only in case of an initiated connection
6239          * request the remote features.
6240          *
6241          * If the local controller supports peripheral-initiated features
6242          * exchange, then requesting the remote features in peripheral
6243          * role is possible. Otherwise just transition into the
6244          * connected state without requesting the remote features.
6245          */
6246         if (conn->out ||
6247             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) {
6248                 struct hci_cp_le_read_remote_features cp;
6249
6250                 cp.handle = __cpu_to_le16(conn->handle);
6251
6252                 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
6253                              sizeof(cp), &cp);
6254
6255                 hci_conn_hold(conn);
6256         } else {
6257                 conn->state = BT_CONNECTED;
6258                 hci_connect_cfm(conn, status);
6259         }
6260
6261         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
6262                                            conn->dst_type);
6263         if (params) {
6264                 hci_pend_le_list_del_init(params);
6265                 if (params->conn) {
6266                         hci_conn_drop(params->conn);
6267                         hci_conn_put(params->conn);
6268                         params->conn = NULL;
6269                 }
6270         }
6271
6272 unlock:
6273         hci_update_passive_scan(hdev);
6274         hci_dev_unlock(hdev);
6275 }
6276
6277 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data,
6278                                      struct sk_buff *skb)
6279 {
6280         struct hci_ev_le_conn_complete *ev = data;
6281
6282         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6283
6284         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6285                              NULL, ev->role, le16_to_cpu(ev->handle),
6286                              le16_to_cpu(ev->interval),
6287                              le16_to_cpu(ev->latency),
6288                              le16_to_cpu(ev->supervision_timeout));
6289 }
6290
6291 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data,
6292                                          struct sk_buff *skb)
6293 {
6294         struct hci_ev_le_enh_conn_complete *ev = data;
6295
6296         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6297
6298         le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
6299                              &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
6300                              le16_to_cpu(ev->interval),
6301                              le16_to_cpu(ev->latency),
6302                              le16_to_cpu(ev->supervision_timeout));
6303 }
6304
6305 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data,
6306                                     struct sk_buff *skb)
6307 {
6308         struct hci_evt_le_ext_adv_set_term *ev = data;
6309         struct hci_conn *conn;
6310         struct adv_info *adv, *n;
6311
6312         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6313
6314         /* The Bluetooth Core 5.3 specification clearly states that this event
6315          * shall not be sent when the Host disables the advertising set. So in
6316          * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event.
6317          *
6318          * When the Host disables an advertising set, all cleanup is done via
6319          * its command callback and not needed to be duplicated here.
6320          */
6321         if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) {
6322                 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event");
6323                 return;
6324         }
6325
6326         hci_dev_lock(hdev);
6327
6328         adv = hci_find_adv_instance(hdev, ev->handle);
6329
6330         if (ev->status) {
6331                 if (!adv)
6332                         goto unlock;
6333
6334                 /* Remove advertising as it has been terminated */
6335                 hci_remove_adv_instance(hdev, ev->handle);
6336                 mgmt_advertising_removed(NULL, hdev, ev->handle);
6337
6338                 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) {
6339                         if (adv->enabled)
6340                                 goto unlock;
6341                 }
6342
6343                 /* We are no longer advertising, clear HCI_LE_ADV */
6344                 hci_dev_clear_flag(hdev, HCI_LE_ADV);
6345                 goto unlock;
6346         }
6347
6348         if (adv)
6349                 adv->enabled = false;
6350
6351         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
6352         if (conn) {
6353                 /* Store handle in the connection so the correct advertising
6354                  * instance can be re-enabled when disconnected.
6355                  */
6356                 conn->adv_instance = ev->handle;
6357
6358                 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
6359                     bacmp(&conn->resp_addr, BDADDR_ANY))
6360                         goto unlock;
6361
6362                 if (!ev->handle) {
6363                         bacpy(&conn->resp_addr, &hdev->random_addr);
6364                         goto unlock;
6365                 }
6366
6367                 if (adv)
6368                         bacpy(&conn->resp_addr, &adv->random_addr);
6369         }
6370
6371 unlock:
6372         hci_dev_unlock(hdev);
6373 }
6374
6375 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data,
6376                                             struct sk_buff *skb)
6377 {
6378         struct hci_ev_le_conn_update_complete *ev = data;
6379         struct hci_conn *conn;
6380
6381         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6382
6383         if (ev->status)
6384                 return;
6385
6386         hci_dev_lock(hdev);
6387
6388         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6389         if (conn) {
6390 #ifdef TIZEN_BT
6391                 if (ev->status) {
6392                         hci_dev_unlock(hdev);
6393                         mgmt_le_conn_update_failed(hdev, &conn->dst,
6394                                 conn->type, conn->dst_type, ev->status);
6395                         return;
6396                 }
6397 #endif
6398                 conn->le_conn_interval = le16_to_cpu(ev->interval);
6399                 conn->le_conn_latency = le16_to_cpu(ev->latency);
6400                 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
6401         }
6402
6403         hci_dev_unlock(hdev);
6404
6405 #ifdef TIZEN_BT
6406         mgmt_le_conn_updated(hdev, &conn->dst, conn->type,
6407                                 conn->dst_type, conn->le_conn_interval,
6408                                 conn->le_conn_latency, conn->le_supv_timeout);
6409 #endif
6410 }
6411
6412 /* This function requires the caller holds hdev->lock */
6413 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
6414                                               bdaddr_t *addr,
6415                                               u8 addr_type, bool addr_resolved,
6416                                               u8 adv_type)
6417 {
6418         struct hci_conn *conn;
6419         struct hci_conn_params *params;
6420
6421         /* If the event is not connectable don't proceed further */
6422         if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
6423                 return NULL;
6424
6425         /* Ignore if the device is blocked or hdev is suspended */
6426         if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) ||
6427             hdev->suspended)
6428                 return NULL;
6429
6430         /* Most controller will fail if we try to create new connections
6431          * while we have an existing one in peripheral role.
6432          */
6433         if (hdev->conn_hash.le_num_peripheral > 0 &&
6434             (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) ||
6435              !(hdev->le_states[3] & 0x10)))
6436                 return NULL;
6437
6438         /* If we're not connectable only connect devices that we have in
6439          * our pend_le_conns list.
6440          */
6441         params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr,
6442                                            addr_type);
6443         if (!params)
6444                 return NULL;
6445
6446         if (!params->explicit_connect) {
6447                 switch (params->auto_connect) {
6448                 case HCI_AUTO_CONN_DIRECT:
6449                         /* Only devices advertising with ADV_DIRECT_IND are
6450                          * triggering a connection attempt. This is allowing
6451                          * incoming connections from peripheral devices.
6452                          */
6453                         if (adv_type != LE_ADV_DIRECT_IND)
6454                                 return NULL;
6455                         break;
6456                 case HCI_AUTO_CONN_ALWAYS:
6457                         /* Devices advertising with ADV_IND or ADV_DIRECT_IND
6458                          * are triggering a connection attempt. This means
6459                          * that incoming connections from peripheral device are
6460                          * accepted and also outgoing connections to peripheral
6461                          * devices are established when found.
6462                          */
6463                         break;
6464                 default:
6465                         return NULL;
6466                 }
6467         }
6468
6469         conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
6470                               BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
6471                               HCI_ROLE_MASTER);
6472         if (!IS_ERR(conn)) {
6473                 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
6474                  * by higher layer that tried to connect, if no then
6475                  * store the pointer since we don't really have any
6476                  * other owner of the object besides the params that
6477                  * triggered it. This way we can abort the connection if
6478                  * the parameters get removed and keep the reference
6479                  * count consistent once the connection is established.
6480                  */
6481
6482                 if (!params->explicit_connect)
6483                         params->conn = hci_conn_get(conn);
6484
6485                 return conn;
6486         }
6487
6488         switch (PTR_ERR(conn)) {
6489         case -EBUSY:
6490                 /* If hci_connect() returns -EBUSY it means there is already
6491                  * an LE connection attempt going on. Since controllers don't
6492                  * support more than one connection attempt at the time, we
6493                  * don't consider this an error case.
6494                  */
6495                 break;
6496         default:
6497                 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
6498                 return NULL;
6499         }
6500
6501         return NULL;
6502 }
6503
6504 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
6505                                u8 bdaddr_type, bdaddr_t *direct_addr,
6506                                u8 direct_addr_type, s8 rssi, u8 *data, u8 len,
6507                                bool ext_adv, bool ctl_time, u64 instant)
6508 {
6509 #ifndef TIZEN_BT
6510         struct discovery_state *d = &hdev->discovery;
6511         bool match;
6512 #endif
6513         struct smp_irk *irk;
6514         struct hci_conn *conn;
6515         bool bdaddr_resolved;
6516         u32 flags;
6517         u8 *ptr;
6518
6519         switch (type) {
6520         case LE_ADV_IND:
6521         case LE_ADV_DIRECT_IND:
6522         case LE_ADV_SCAN_IND:
6523         case LE_ADV_NONCONN_IND:
6524         case LE_ADV_SCAN_RSP:
6525                 break;
6526         default:
6527                 bt_dev_err_ratelimited(hdev, "unknown advertising packet "
6528                                        "type: 0x%02x", type);
6529                 return;
6530         }
6531
6532         if (len > max_adv_len(hdev)) {
6533                 bt_dev_err_ratelimited(hdev,
6534                                        "adv larger than maximum supported");
6535                 return;
6536         }
6537
6538         /* Find the end of the data in case the report contains padded zero
6539          * bytes at the end causing an invalid length value.
6540          *
6541          * When data is NULL, len is 0 so there is no need for extra ptr
6542          * check as 'ptr < data + 0' is already false in such case.
6543          */
6544         for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) {
6545                 if (ptr + 1 + *ptr > data + len)
6546                         break;
6547         }
6548
6549         /* Adjust for actual length. This handles the case when remote
6550          * device is advertising with incorrect data length.
6551          */
6552         len = ptr - data;
6553
6554         /* If the direct address is present, then this report is from
6555          * a LE Direct Advertising Report event. In that case it is
6556          * important to see if the address is matching the local
6557          * controller address.
6558          */
6559         if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) {
6560                 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
6561                                                   &bdaddr_resolved);
6562
6563                 /* Only resolvable random addresses are valid for these
6564                  * kind of reports and others can be ignored.
6565                  */
6566                 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
6567                         return;
6568
6569                 /* If the controller is not using resolvable random
6570                  * addresses, then this report can be ignored.
6571                  */
6572                 if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
6573                         return;
6574
6575                 /* If the local IRK of the controller does not match
6576                  * with the resolvable random address provided, then
6577                  * this report can be ignored.
6578                  */
6579                 if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
6580                         return;
6581         }
6582
6583         /* Check if we need to convert to identity address */
6584         irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
6585         if (irk) {
6586                 bdaddr = &irk->bdaddr;
6587                 bdaddr_type = irk->addr_type;
6588         }
6589
6590         bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
6591
6592         /* Check if we have been requested to connect to this device.
6593          *
6594          * direct_addr is set only for directed advertising reports (it is NULL
6595          * for advertising reports) and is already verified to be RPA above.
6596          */
6597         conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
6598                                      type);
6599         if (!ext_adv && conn && type == LE_ADV_IND &&
6600             len <= max_adv_len(hdev)) {
6601                 /* Store report for later inclusion by
6602                  * mgmt_device_connected
6603                  */
6604                 memcpy(conn->le_adv_data, data, len);
6605                 conn->le_adv_data_len = len;
6606         }
6607
6608         if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
6609                 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
6610         else
6611                 flags = 0;
6612
6613         /* All scan results should be sent up for Mesh systems */
6614         if (hci_dev_test_flag(hdev, HCI_MESH)) {
6615                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6616                                   rssi, flags, data, len, NULL, 0, instant);
6617                 return;
6618         }
6619
6620         /* Passive scanning shouldn't trigger any device found events,
6621          * except for devices marked as CONN_REPORT for which we do send
6622          * device found events, or advertisement monitoring requested.
6623          */
6624         if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
6625                 if (type == LE_ADV_DIRECT_IND)
6626                         return;
6627
6628 #ifndef TIZEN_BT
6629                 /* Handle all adv packet in platform */
6630                 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
6631                                                bdaddr, bdaddr_type) &&
6632                     idr_is_empty(&hdev->adv_monitors_idr))
6633                         return;
6634 #endif
6635
6636 #ifdef TIZEN_BT
6637                 mgmt_le_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6638                                   rssi, flags, data, len, NULL, 0, type);
6639 #else
6640                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6641                                   rssi, flags, data, len, NULL, 0, 0);
6642 #endif
6643                 return;
6644         }
6645
6646         /* When receiving a scan response, then there is no way to
6647          * know if the remote device is connectable or not. However
6648          * since scan responses are merged with a previously seen
6649          * advertising report, the flags field from that report
6650          * will be used.
6651          *
6652          * In the unlikely case that a controller just sends a scan
6653          * response event that doesn't match the pending report, then
6654          * it is marked as a standalone SCAN_RSP.
6655          */
6656         if (type == LE_ADV_SCAN_RSP)
6657                 flags = MGMT_DEV_FOUND_SCAN_RSP;
6658
6659 #ifdef TIZEN_BT
6660         /* Disable adv ind and scan rsp merging */
6661         mgmt_le_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6662                                   rssi, flags, data, len, NULL, 0, type);
6663 #else
6664         /* If there's nothing pending either store the data from this
6665          * event or send an immediate device found event if the data
6666          * should not be stored for later.
6667          */
6668         if (!ext_adv && !has_pending_adv_report(hdev)) {
6669                 /* If the report will trigger a SCAN_REQ store it for
6670                  * later merging.
6671                  */
6672                 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
6673                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6674                                                  rssi, flags, data, len);
6675                         return;
6676                 }
6677
6678                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6679                                   rssi, flags, data, len, NULL, 0, 0);
6680                 return;
6681         }
6682
6683         /* Check if the pending report is for the same device as the new one */
6684         match = (!bacmp(bdaddr, &d->last_adv_addr) &&
6685                  bdaddr_type == d->last_adv_addr_type);
6686
6687         /* If the pending data doesn't match this report or this isn't a
6688          * scan response (e.g. we got a duplicate ADV_IND) then force
6689          * sending of the pending data.
6690          */
6691         if (type != LE_ADV_SCAN_RSP || !match) {
6692                 /* Send out whatever is in the cache, but skip duplicates */
6693                 if (!match)
6694                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6695                                           d->last_adv_addr_type, NULL,
6696                                           d->last_adv_rssi, d->last_adv_flags,
6697                                           d->last_adv_data,
6698                                           d->last_adv_data_len, NULL, 0, 0);
6699
6700                 /* If the new report will trigger a SCAN_REQ store it for
6701                  * later merging.
6702                  */
6703                 if (!ext_adv && (type == LE_ADV_IND ||
6704                                  type == LE_ADV_SCAN_IND)) {
6705                         store_pending_adv_report(hdev, bdaddr, bdaddr_type,
6706                                                  rssi, flags, data, len);
6707                         return;
6708                 }
6709
6710                 /* The advertising reports cannot be merged, so clear
6711                  * the pending report and send out a device found event.
6712                  */
6713                 clear_pending_adv_report(hdev);
6714                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
6715                                   rssi, flags, data, len, NULL, 0, 0);
6716                 return;
6717         }
6718
6719         /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
6720          * the new event is a SCAN_RSP. We can therefore proceed with
6721          * sending a merged device found event.
6722          */
6723         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
6724                           d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
6725                           d->last_adv_data, d->last_adv_data_len, data, len, 0);
6726         clear_pending_adv_report(hdev);
6727 #endif
6728 }
6729
6730 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
6731                                   struct sk_buff *skb)
6732 {
6733         struct hci_ev_le_advertising_report *ev = data;
6734         u64 instant = jiffies;
6735
6736         if (!ev->num)
6737                 return;
6738
6739         hci_dev_lock(hdev);
6740
6741         while (ev->num--) {
6742                 struct hci_ev_le_advertising_info *info;
6743                 s8 rssi;
6744
6745                 info = hci_le_ev_skb_pull(hdev, skb,
6746                                           HCI_EV_LE_ADVERTISING_REPORT,
6747                                           sizeof(*info));
6748                 if (!info)
6749                         break;
6750
6751                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT,
6752                                         info->length + 1))
6753                         break;
6754
6755                 if (info->length <= max_adv_len(hdev)) {
6756                         rssi = info->data[info->length];
6757                         process_adv_report(hdev, info->type, &info->bdaddr,
6758                                            info->bdaddr_type, NULL, 0, rssi,
6759                                            info->data, info->length, false,
6760                                            false, instant);
6761                 } else {
6762                         bt_dev_err(hdev, "Dropping invalid advertising data");
6763                 }
6764         }
6765
6766         hci_dev_unlock(hdev);
6767 }
6768
6769 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type)
6770 {
6771         if (evt_type & LE_EXT_ADV_LEGACY_PDU) {
6772                 switch (evt_type) {
6773                 case LE_LEGACY_ADV_IND:
6774                         return LE_ADV_IND;
6775                 case LE_LEGACY_ADV_DIRECT_IND:
6776                         return LE_ADV_DIRECT_IND;
6777                 case LE_LEGACY_ADV_SCAN_IND:
6778                         return LE_ADV_SCAN_IND;
6779                 case LE_LEGACY_NONCONN_IND:
6780                         return LE_ADV_NONCONN_IND;
6781                 case LE_LEGACY_SCAN_RSP_ADV:
6782                 case LE_LEGACY_SCAN_RSP_ADV_SCAN:
6783                         return LE_ADV_SCAN_RSP;
6784                 }
6785
6786                 goto invalid;
6787         }
6788
6789         if (evt_type & LE_EXT_ADV_CONN_IND) {
6790                 if (evt_type & LE_EXT_ADV_DIRECT_IND)
6791                         return LE_ADV_DIRECT_IND;
6792
6793                 return LE_ADV_IND;
6794         }
6795
6796         if (evt_type & LE_EXT_ADV_SCAN_RSP)
6797                 return LE_ADV_SCAN_RSP;
6798
6799         if (evt_type & LE_EXT_ADV_SCAN_IND)
6800                 return LE_ADV_SCAN_IND;
6801
6802         if (evt_type == LE_EXT_ADV_NON_CONN_IND ||
6803             evt_type & LE_EXT_ADV_DIRECT_IND)
6804                 return LE_ADV_NONCONN_IND;
6805
6806 invalid:
6807         bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x",
6808                                evt_type);
6809
6810         return LE_ADV_INVALID;
6811 }
6812
6813 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data,
6814                                       struct sk_buff *skb)
6815 {
6816         struct hci_ev_le_ext_adv_report *ev = data;
6817         u64 instant = jiffies;
6818
6819         if (!ev->num)
6820                 return;
6821
6822         hci_dev_lock(hdev);
6823
6824         while (ev->num--) {
6825                 struct hci_ev_le_ext_adv_info *info;
6826                 u8 legacy_evt_type;
6827                 u16 evt_type;
6828
6829                 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6830                                           sizeof(*info));
6831                 if (!info)
6832                         break;
6833
6834                 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT,
6835                                         info->length))
6836                         break;
6837
6838                 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK;
6839                 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type);
6840                 if (legacy_evt_type != LE_ADV_INVALID) {
6841                         process_adv_report(hdev, legacy_evt_type, &info->bdaddr,
6842                                            info->bdaddr_type, NULL, 0,
6843                                            info->rssi, info->data, info->length,
6844                                            !(evt_type & LE_EXT_ADV_LEGACY_PDU),
6845                                            false, instant);
6846                 }
6847         }
6848
6849         hci_dev_unlock(hdev);
6850 }
6851
6852 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle)
6853 {
6854         struct hci_cp_le_pa_term_sync cp;
6855
6856         memset(&cp, 0, sizeof(cp));
6857         cp.handle = handle;
6858
6859         return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp);
6860 }
6861
6862 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
6863                                             struct sk_buff *skb)
6864 {
6865         struct hci_ev_le_pa_sync_established *ev = data;
6866         int mask = hdev->link_mode;
6867         __u8 flags = 0;
6868         struct hci_conn *pa_sync;
6869
6870         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6871
6872         hci_dev_lock(hdev);
6873
6874         hci_dev_clear_flag(hdev, HCI_PA_SYNC);
6875
6876         mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
6877         if (!(mask & HCI_LM_ACCEPT)) {
6878                 hci_le_pa_term_sync(hdev, ev->handle);
6879                 goto unlock;
6880         }
6881
6882         if (!(flags & HCI_PROTO_DEFER))
6883                 goto unlock;
6884
6885         if (ev->status) {
6886                 /* Add connection to indicate the failed PA sync event */
6887                 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
6888                                              HCI_ROLE_SLAVE);
6889
6890                 if (!pa_sync)
6891                         goto unlock;
6892
6893                 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags);
6894
6895                 /* Notify iso layer */
6896                 hci_connect_cfm(pa_sync, ev->status);
6897         }
6898
6899 unlock:
6900         hci_dev_unlock(hdev);
6901 }
6902
6903 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data,
6904                                       struct sk_buff *skb)
6905 {
6906         struct hci_ev_le_per_adv_report *ev = data;
6907         int mask = hdev->link_mode;
6908         __u8 flags = 0;
6909
6910         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
6911
6912         hci_dev_lock(hdev);
6913
6914         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
6915         if (!(mask & HCI_LM_ACCEPT))
6916                 hci_le_pa_term_sync(hdev, ev->sync_handle);
6917
6918         hci_dev_unlock(hdev);
6919 }
6920
6921 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data,
6922                                             struct sk_buff *skb)
6923 {
6924         struct hci_ev_le_remote_feat_complete *ev = data;
6925         struct hci_conn *conn;
6926
6927         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
6928
6929         hci_dev_lock(hdev);
6930
6931         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6932         if (conn) {
6933                 if (!ev->status)
6934                         memcpy(conn->features[0], ev->features, 8);
6935
6936                 if (conn->state == BT_CONFIG) {
6937                         __u8 status;
6938
6939                         /* If the local controller supports peripheral-initiated
6940                          * features exchange, but the remote controller does
6941                          * not, then it is possible that the error code 0x1a
6942                          * for unsupported remote feature gets returned.
6943                          *
6944                          * In this specific case, allow the connection to
6945                          * transition into connected state and mark it as
6946                          * successful.
6947                          */
6948                         if (!conn->out && ev->status == 0x1a &&
6949                             (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES))
6950                                 status = 0x00;
6951                         else
6952                                 status = ev->status;
6953
6954                         conn->state = BT_CONNECTED;
6955                         hci_connect_cfm(conn, status);
6956                         hci_conn_drop(conn);
6957                 }
6958         }
6959
6960         hci_dev_unlock(hdev);
6961 }
6962
6963 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data,
6964                                    struct sk_buff *skb)
6965 {
6966         struct hci_ev_le_ltk_req *ev = data;
6967         struct hci_cp_le_ltk_reply cp;
6968         struct hci_cp_le_ltk_neg_reply neg;
6969         struct hci_conn *conn;
6970         struct smp_ltk *ltk;
6971
6972         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
6973
6974         hci_dev_lock(hdev);
6975
6976         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
6977         if (conn == NULL)
6978                 goto not_found;
6979
6980         ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
6981         if (!ltk)
6982                 goto not_found;
6983
6984         if (smp_ltk_is_sc(ltk)) {
6985                 /* With SC both EDiv and Rand are set to zero */
6986                 if (ev->ediv || ev->rand)
6987                         goto not_found;
6988         } else {
6989                 /* For non-SC keys check that EDiv and Rand match */
6990                 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
6991                         goto not_found;
6992         }
6993
6994         memcpy(cp.ltk, ltk->val, ltk->enc_size);
6995         memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
6996         cp.handle = cpu_to_le16(conn->handle);
6997
6998         conn->pending_sec_level = smp_ltk_sec_level(ltk);
6999
7000         conn->enc_key_size = ltk->enc_size;
7001
7002         hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
7003
7004         /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
7005          * temporary key used to encrypt a connection following
7006          * pairing. It is used during the Encrypted Session Setup to
7007          * distribute the keys. Later, security can be re-established
7008          * using a distributed LTK.
7009          */
7010         if (ltk->type == SMP_STK) {
7011                 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
7012                 list_del_rcu(&ltk->list);
7013                 kfree_rcu(ltk, rcu);
7014         } else {
7015                 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
7016         }
7017
7018         hci_dev_unlock(hdev);
7019
7020         return;
7021
7022 not_found:
7023         neg.handle = ev->handle;
7024         hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
7025         hci_dev_unlock(hdev);
7026 }
7027
7028 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
7029                                       u8 reason)
7030 {
7031         struct hci_cp_le_conn_param_req_neg_reply cp;
7032
7033         cp.handle = cpu_to_le16(handle);
7034         cp.reason = reason;
7035
7036         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
7037                      &cp);
7038 }
7039
7040 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data,
7041                                              struct sk_buff *skb)
7042 {
7043         struct hci_ev_le_remote_conn_param_req *ev = data;
7044         struct hci_cp_le_conn_param_req_reply cp;
7045         struct hci_conn *hcon;
7046         u16 handle, min, max, latency, timeout;
7047
7048         bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle));
7049
7050         handle = le16_to_cpu(ev->handle);
7051         min = le16_to_cpu(ev->interval_min);
7052         max = le16_to_cpu(ev->interval_max);
7053         latency = le16_to_cpu(ev->latency);
7054         timeout = le16_to_cpu(ev->timeout);
7055
7056         hcon = hci_conn_hash_lookup_handle(hdev, handle);
7057         if (!hcon || hcon->state != BT_CONNECTED)
7058                 return send_conn_param_neg_reply(hdev, handle,
7059                                                  HCI_ERROR_UNKNOWN_CONN_ID);
7060
7061         if (hci_check_conn_params(min, max, latency, timeout))
7062                 return send_conn_param_neg_reply(hdev, handle,
7063                                                  HCI_ERROR_INVALID_LL_PARAMS);
7064
7065         if (hcon->role == HCI_ROLE_MASTER) {
7066                 struct hci_conn_params *params;
7067                 u8 store_hint;
7068
7069                 hci_dev_lock(hdev);
7070
7071                 params = hci_conn_params_lookup(hdev, &hcon->dst,
7072                                                 hcon->dst_type);
7073                 if (params) {
7074                         params->conn_min_interval = min;
7075                         params->conn_max_interval = max;
7076                         params->conn_latency = latency;
7077                         params->supervision_timeout = timeout;
7078                         store_hint = 0x01;
7079                 } else {
7080                         store_hint = 0x00;
7081                 }
7082
7083                 hci_dev_unlock(hdev);
7084
7085                 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
7086                                     store_hint, min, max, latency, timeout);
7087         }
7088
7089         cp.handle = ev->handle;
7090         cp.interval_min = ev->interval_min;
7091         cp.interval_max = ev->interval_max;
7092         cp.latency = ev->latency;
7093         cp.timeout = ev->timeout;
7094         cp.min_ce_len = 0;
7095         cp.max_ce_len = 0;
7096
7097         hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
7098 }
7099
7100 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data,
7101                                          struct sk_buff *skb)
7102 {
7103         struct hci_ev_le_direct_adv_report *ev = data;
7104         u64 instant = jiffies;
7105         int i;
7106
7107         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT,
7108                                 flex_array_size(ev, info, ev->num)))
7109                 return;
7110
7111         if (!ev->num)
7112                 return;
7113
7114         hci_dev_lock(hdev);
7115
7116         for (i = 0; i < ev->num; i++) {
7117                 struct hci_ev_le_direct_adv_info *info = &ev->info[i];
7118
7119                 process_adv_report(hdev, info->type, &info->bdaddr,
7120                                    info->bdaddr_type, &info->direct_addr,
7121                                    info->direct_addr_type, info->rssi, NULL, 0,
7122                                    false, false, instant);
7123         }
7124
7125         hci_dev_unlock(hdev);
7126 }
7127
7128 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data,
7129                                   struct sk_buff *skb)
7130 {
7131         struct hci_ev_le_phy_update_complete *ev = data;
7132         struct hci_conn *conn;
7133
7134         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7135
7136         if (ev->status)
7137                 return;
7138
7139         hci_dev_lock(hdev);
7140
7141         conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
7142         if (!conn)
7143                 goto unlock;
7144
7145         conn->le_tx_phy = ev->tx_phy;
7146         conn->le_rx_phy = ev->rx_phy;
7147
7148 unlock:
7149         hci_dev_unlock(hdev);
7150 }
7151
7152 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
7153                                         struct sk_buff *skb)
7154 {
7155         struct hci_evt_le_cis_established *ev = data;
7156         struct hci_conn *conn;
7157         struct bt_iso_qos *qos;
7158         bool pending = false;
7159         u16 handle = __le16_to_cpu(ev->handle);
7160
7161         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7162
7163         hci_dev_lock(hdev);
7164
7165         conn = hci_conn_hash_lookup_handle(hdev, handle);
7166         if (!conn) {
7167                 bt_dev_err(hdev,
7168                            "Unable to find connection with handle 0x%4.4x",
7169                            handle);
7170                 goto unlock;
7171         }
7172
7173         if (conn->type != ISO_LINK) {
7174                 bt_dev_err(hdev,
7175                            "Invalid connection link type handle 0x%4.4x",
7176                            handle);
7177                 goto unlock;
7178         }
7179
7180         qos = &conn->iso_qos;
7181
7182         pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags);
7183
7184         /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */
7185         qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250;
7186         qos->ucast.out.interval = qos->ucast.in.interval;
7187
7188         switch (conn->role) {
7189         case HCI_ROLE_SLAVE:
7190                 /* Convert Transport Latency (us) to Latency (msec) */
7191                 qos->ucast.in.latency =
7192                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
7193                                           1000);
7194                 qos->ucast.out.latency =
7195                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
7196                                           1000);
7197                 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu);
7198                 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu);
7199                 qos->ucast.in.phy = ev->c_phy;
7200                 qos->ucast.out.phy = ev->p_phy;
7201                 break;
7202         case HCI_ROLE_MASTER:
7203                 /* Convert Transport Latency (us) to Latency (msec) */
7204                 qos->ucast.out.latency =
7205                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
7206                                           1000);
7207                 qos->ucast.in.latency =
7208                         DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
7209                                           1000);
7210                 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu);
7211                 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu);
7212                 qos->ucast.out.phy = ev->c_phy;
7213                 qos->ucast.in.phy = ev->p_phy;
7214                 break;
7215         }
7216
7217         if (!ev->status) {
7218                 conn->state = BT_CONNECTED;
7219                 hci_debugfs_create_conn(conn);
7220                 hci_conn_add_sysfs(conn);
7221                 hci_iso_setup_path(conn);
7222                 goto unlock;
7223         }
7224
7225         conn->state = BT_CLOSED;
7226         hci_connect_cfm(conn, ev->status);
7227         hci_conn_del(conn);
7228
7229 unlock:
7230         if (pending)
7231                 hci_le_create_cis_pending(hdev);
7232
7233         hci_dev_unlock(hdev);
7234 }
7235
7236 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle)
7237 {
7238         struct hci_cp_le_reject_cis cp;
7239
7240         memset(&cp, 0, sizeof(cp));
7241         cp.handle = handle;
7242         cp.reason = HCI_ERROR_REJ_BAD_ADDR;
7243         hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp);
7244 }
7245
7246 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle)
7247 {
7248         struct hci_cp_le_accept_cis cp;
7249
7250         memset(&cp, 0, sizeof(cp));
7251         cp.handle = handle;
7252         hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
7253 }
7254
7255 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data,
7256                                struct sk_buff *skb)
7257 {
7258         struct hci_evt_le_cis_req *ev = data;
7259         u16 acl_handle, cis_handle;
7260         struct hci_conn *acl, *cis;
7261         int mask;
7262         __u8 flags = 0;
7263
7264         acl_handle = __le16_to_cpu(ev->acl_handle);
7265         cis_handle = __le16_to_cpu(ev->cis_handle);
7266
7267         bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x",
7268                    acl_handle, cis_handle, ev->cig_id, ev->cis_id);
7269
7270         hci_dev_lock(hdev);
7271
7272         acl = hci_conn_hash_lookup_handle(hdev, acl_handle);
7273         if (!acl)
7274                 goto unlock;
7275
7276         mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags);
7277         if (!(mask & HCI_LM_ACCEPT)) {
7278                 hci_le_reject_cis(hdev, ev->cis_handle);
7279                 goto unlock;
7280         }
7281
7282         cis = hci_conn_hash_lookup_handle(hdev, cis_handle);
7283         if (!cis) {
7284                 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE,
7285                                    cis_handle);
7286                 if (!cis) {
7287                         hci_le_reject_cis(hdev, ev->cis_handle);
7288                         goto unlock;
7289                 }
7290         }
7291
7292         cis->iso_qos.ucast.cig = ev->cig_id;
7293         cis->iso_qos.ucast.cis = ev->cis_id;
7294
7295         if (!(flags & HCI_PROTO_DEFER)) {
7296                 hci_le_accept_cis(hdev, ev->cis_handle);
7297         } else {
7298                 cis->state = BT_CONNECT2;
7299                 hci_connect_cfm(cis, 0);
7300         }
7301
7302 unlock:
7303         hci_dev_unlock(hdev);
7304 }
7305
7306 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data)
7307 {
7308         u8 handle = PTR_UINT(data);
7309
7310         return hci_le_terminate_big_sync(hdev, handle,
7311                                          HCI_ERROR_LOCAL_HOST_TERM);
7312 }
7313
7314 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
7315                                            struct sk_buff *skb)
7316 {
7317         struct hci_evt_le_create_big_complete *ev = data;
7318         struct hci_conn *conn;
7319         __u8 i = 0;
7320
7321         BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
7322
7323         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE,
7324                                 flex_array_size(ev, bis_handle, ev->num_bis)))
7325                 return;
7326
7327         hci_dev_lock(hdev);
7328         rcu_read_lock();
7329
7330         /* Connect all BISes that are bound to the BIG */
7331         list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
7332                 if (bacmp(&conn->dst, BDADDR_ANY) ||
7333                     conn->type != ISO_LINK ||
7334                     conn->iso_qos.bcast.big != ev->handle)
7335                         continue;
7336
7337                 if (hci_conn_set_handle(conn,
7338                                         __le16_to_cpu(ev->bis_handle[i++])))
7339                         continue;
7340
7341                 if (!ev->status) {
7342                         conn->state = BT_CONNECTED;
7343                         set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
7344                         rcu_read_unlock();
7345                         hci_debugfs_create_conn(conn);
7346                         hci_conn_add_sysfs(conn);
7347                         hci_iso_setup_path(conn);
7348                         rcu_read_lock();
7349                         continue;
7350                 }
7351
7352                 hci_connect_cfm(conn, ev->status);
7353                 rcu_read_unlock();
7354                 hci_conn_del(conn);
7355                 rcu_read_lock();
7356         }
7357
7358         rcu_read_unlock();
7359
7360         if (!ev->status && !i)
7361                 /* If no BISes have been connected for the BIG,
7362                  * terminate. This is in case all bound connections
7363                  * have been closed before the BIG creation
7364                  * has completed.
7365                  */
7366                 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync,
7367                                    UINT_PTR(ev->handle), NULL);
7368
7369         hci_dev_unlock(hdev);
7370 }
7371
7372 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
7373                                             struct sk_buff *skb)
7374 {
7375         struct hci_evt_le_big_sync_estabilished *ev = data;
7376         struct hci_conn *bis;
7377         struct hci_conn *pa_sync;
7378         int i;
7379
7380         bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
7381
7382         if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7383                                 flex_array_size(ev, bis, ev->num_bis)))
7384                 return;
7385
7386         hci_dev_lock(hdev);
7387
7388         if (!ev->status) {
7389                 pa_sync = hci_conn_hash_lookup_pa_sync_big_handle(hdev, ev->handle);
7390                 if (pa_sync)
7391                         /* Also mark the BIG sync established event on the
7392                          * associated PA sync hcon
7393                          */
7394                         set_bit(HCI_CONN_BIG_SYNC, &pa_sync->flags);
7395         }
7396
7397         for (i = 0; i < ev->num_bis; i++) {
7398                 u16 handle = le16_to_cpu(ev->bis[i]);
7399                 __le32 interval;
7400
7401                 bis = hci_conn_hash_lookup_handle(hdev, handle);
7402                 if (!bis) {
7403                         bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
7404                                            HCI_ROLE_SLAVE, handle);
7405                         if (!bis)
7406                                 continue;
7407                 }
7408
7409                 if (ev->status != 0x42)
7410                         /* Mark PA sync as established */
7411                         set_bit(HCI_CONN_PA_SYNC, &bis->flags);
7412
7413                 bis->iso_qos.bcast.big = ev->handle;
7414                 memset(&interval, 0, sizeof(interval));
7415                 memcpy(&interval, ev->latency, sizeof(ev->latency));
7416                 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval);
7417                 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */
7418                 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
7419                 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
7420
7421                 if (!ev->status) {
7422                         set_bit(HCI_CONN_BIG_SYNC, &bis->flags);
7423                         hci_iso_setup_path(bis);
7424                 }
7425         }
7426
7427         /* In case BIG sync failed, notify each failed connection to
7428          * the user after all hci connections have been added
7429          */
7430         if (ev->status)
7431                 for (i = 0; i < ev->num_bis; i++) {
7432                         u16 handle = le16_to_cpu(ev->bis[i]);
7433
7434                         bis = hci_conn_hash_lookup_handle(hdev, handle);
7435
7436                         set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags);
7437                         hci_connect_cfm(bis, ev->status);
7438                 }
7439
7440         hci_dev_unlock(hdev);
7441 }
7442
7443 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data,
7444                                            struct sk_buff *skb)
7445 {
7446         struct hci_evt_le_big_info_adv_report *ev = data;
7447         int mask = hdev->link_mode;
7448         __u8 flags = 0;
7449         struct hci_conn *pa_sync;
7450
7451         bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
7452
7453         hci_dev_lock(hdev);
7454
7455         mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
7456         if (!(mask & HCI_LM_ACCEPT)) {
7457                 hci_le_pa_term_sync(hdev, ev->sync_handle);
7458                 goto unlock;
7459         }
7460
7461         if (!(flags & HCI_PROTO_DEFER))
7462                 goto unlock;
7463
7464         pa_sync = hci_conn_hash_lookup_pa_sync_handle
7465                         (hdev,
7466                         le16_to_cpu(ev->sync_handle));
7467
7468         if (pa_sync)
7469                 goto unlock;
7470
7471         /* Add connection to indicate the PA sync event */
7472         pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY,
7473                                      HCI_ROLE_SLAVE);
7474
7475         if (!pa_sync)
7476                 goto unlock;
7477
7478         pa_sync->sync_handle = le16_to_cpu(ev->sync_handle);
7479         set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags);
7480
7481         /* Notify iso layer */
7482         hci_connect_cfm(pa_sync, 0x00);
7483
7484 unlock:
7485         hci_dev_unlock(hdev);
7486 }
7487
7488 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \
7489 [_op] = { \
7490         .func = _func, \
7491         .min_len = _min_len, \
7492         .max_len = _max_len, \
7493 }
7494
7495 #define HCI_LE_EV(_op, _func, _len) \
7496         HCI_LE_EV_VL(_op, _func, _len, _len)
7497
7498 #define HCI_LE_EV_STATUS(_op, _func) \
7499         HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status))
7500
7501 /* Entries in this table shall have their position according to the subevent
7502  * opcode they handle so the use of the macros above is recommend since it does
7503  * attempt to initialize at its proper index using Designated Initializers that
7504  * way events without a callback function can be ommited.
7505  */
7506 static const struct hci_le_ev {
7507         void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb);
7508         u16  min_len;
7509         u16  max_len;
7510 } hci_le_ev_table[U8_MAX + 1] = {
7511         /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */
7512         HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt,
7513                   sizeof(struct hci_ev_le_conn_complete)),
7514         /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */
7515         HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt,
7516                      sizeof(struct hci_ev_le_advertising_report),
7517                      HCI_MAX_EVENT_SIZE),
7518         /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */
7519         HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE,
7520                   hci_le_conn_update_complete_evt,
7521                   sizeof(struct hci_ev_le_conn_update_complete)),
7522         /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */
7523         HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE,
7524                   hci_le_remote_feat_complete_evt,
7525                   sizeof(struct hci_ev_le_remote_feat_complete)),
7526         /* [0x05 = HCI_EV_LE_LTK_REQ] */
7527         HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt,
7528                   sizeof(struct hci_ev_le_ltk_req)),
7529         /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */
7530         HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ,
7531                   hci_le_remote_conn_param_req_evt,
7532                   sizeof(struct hci_ev_le_remote_conn_param_req)),
7533         /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */
7534         HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE,
7535                   hci_le_enh_conn_complete_evt,
7536                   sizeof(struct hci_ev_le_enh_conn_complete)),
7537         /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */
7538         HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt,
7539                      sizeof(struct hci_ev_le_direct_adv_report),
7540                      HCI_MAX_EVENT_SIZE),
7541         /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */
7542         HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt,
7543                   sizeof(struct hci_ev_le_phy_update_complete)),
7544         /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */
7545         HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt,
7546                      sizeof(struct hci_ev_le_ext_adv_report),
7547                      HCI_MAX_EVENT_SIZE),
7548         /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */
7549         HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
7550                   hci_le_pa_sync_estabilished_evt,
7551                   sizeof(struct hci_ev_le_pa_sync_established)),
7552         /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */
7553         HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT,
7554                                  hci_le_per_adv_report_evt,
7555                                  sizeof(struct hci_ev_le_per_adv_report),
7556                                  HCI_MAX_EVENT_SIZE),
7557         /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
7558         HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
7559                   sizeof(struct hci_evt_le_ext_adv_set_term)),
7560         /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */
7561         HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt,
7562                   sizeof(struct hci_evt_le_cis_established)),
7563         /* [0x1a = HCI_EVT_LE_CIS_REQ] */
7564         HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt,
7565                   sizeof(struct hci_evt_le_cis_req)),
7566         /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */
7567         HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE,
7568                      hci_le_create_big_complete_evt,
7569                      sizeof(struct hci_evt_le_create_big_complete),
7570                      HCI_MAX_EVENT_SIZE),
7571         /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */
7572         HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED,
7573                      hci_le_big_sync_established_evt,
7574                      sizeof(struct hci_evt_le_big_sync_estabilished),
7575                      HCI_MAX_EVENT_SIZE),
7576         /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */
7577         HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT,
7578                      hci_le_big_info_adv_report_evt,
7579                      sizeof(struct hci_evt_le_big_info_adv_report),
7580                      HCI_MAX_EVENT_SIZE),
7581 };
7582
7583 static void hci_le_meta_evt(struct hci_dev *hdev, void *data,
7584                             struct sk_buff *skb, u16 *opcode, u8 *status,
7585                             hci_req_complete_t *req_complete,
7586                             hci_req_complete_skb_t *req_complete_skb)
7587 {
7588         struct hci_ev_le_meta *ev = data;
7589         const struct hci_le_ev *subev;
7590
7591         bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent);
7592
7593         /* Only match event if command OGF is for LE */
7594         if (hdev->sent_cmd &&
7595             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 &&
7596             hci_skb_event(hdev->sent_cmd) == ev->subevent) {
7597                 *opcode = hci_skb_opcode(hdev->sent_cmd);
7598                 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete,
7599                                      req_complete_skb);
7600         }
7601
7602         subev = &hci_le_ev_table[ev->subevent];
7603         if (!subev->func)
7604                 return;
7605
7606         if (skb->len < subev->min_len) {
7607                 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u",
7608                            ev->subevent, skb->len, subev->min_len);
7609                 return;
7610         }
7611
7612         /* Just warn if the length is over max_len size it still be
7613          * possible to partially parse the event so leave to callback to
7614          * decide if that is acceptable.
7615          */
7616         if (skb->len > subev->max_len)
7617                 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u",
7618                             ev->subevent, skb->len, subev->max_len);
7619         data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len);
7620         if (!data)
7621                 return;
7622
7623         subev->func(hdev, data, skb);
7624 }
7625
7626 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
7627                                  u8 event, struct sk_buff *skb)
7628 {
7629         struct hci_ev_cmd_complete *ev;
7630         struct hci_event_hdr *hdr;
7631
7632         if (!skb)
7633                 return false;
7634
7635         hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr));
7636         if (!hdr)
7637                 return false;
7638
7639         if (event) {
7640                 if (hdr->evt != event)
7641                         return false;
7642                 return true;
7643         }
7644
7645         /* Check if request ended in Command Status - no way to retrieve
7646          * any extra parameters in this case.
7647          */
7648         if (hdr->evt == HCI_EV_CMD_STATUS)
7649                 return false;
7650
7651         if (hdr->evt != HCI_EV_CMD_COMPLETE) {
7652                 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)",
7653                            hdr->evt);
7654                 return false;
7655         }
7656
7657         ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev));
7658         if (!ev)
7659                 return false;
7660
7661         if (opcode != __le16_to_cpu(ev->opcode)) {
7662                 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
7663                        __le16_to_cpu(ev->opcode));
7664                 return false;
7665         }
7666
7667         return true;
7668 }
7669
7670 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event,
7671                                   struct sk_buff *skb)
7672 {
7673         struct hci_ev_le_advertising_info *adv;
7674         struct hci_ev_le_direct_adv_info *direct_adv;
7675         struct hci_ev_le_ext_adv_info *ext_adv;
7676         const struct hci_ev_conn_complete *conn_complete = (void *)skb->data;
7677         const struct hci_ev_conn_request *conn_request = (void *)skb->data;
7678
7679         hci_dev_lock(hdev);
7680
7681         /* If we are currently suspended and this is the first BT event seen,
7682          * save the wake reason associated with the event.
7683          */
7684         if (!hdev->suspended || hdev->wake_reason)
7685                 goto unlock;
7686
7687         /* Default to remote wake. Values for wake_reason are documented in the
7688          * Bluez mgmt api docs.
7689          */
7690         hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE;
7691
7692         /* Once configured for remote wakeup, we should only wake up for
7693          * reconnections. It's useful to see which device is waking us up so
7694          * keep track of the bdaddr of the connection event that woke us up.
7695          */
7696         if (event == HCI_EV_CONN_REQUEST) {
7697                 bacpy(&hdev->wake_addr, &conn_complete->bdaddr);
7698                 hdev->wake_addr_type = BDADDR_BREDR;
7699         } else if (event == HCI_EV_CONN_COMPLETE) {
7700                 bacpy(&hdev->wake_addr, &conn_request->bdaddr);
7701                 hdev->wake_addr_type = BDADDR_BREDR;
7702         } else if (event == HCI_EV_LE_META) {
7703                 struct hci_ev_le_meta *le_ev = (void *)skb->data;
7704                 u8 subevent = le_ev->subevent;
7705                 u8 *ptr = &skb->data[sizeof(*le_ev)];
7706                 u8 num_reports = *ptr;
7707
7708                 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT ||
7709                      subevent == HCI_EV_LE_DIRECT_ADV_REPORT ||
7710                      subevent == HCI_EV_LE_EXT_ADV_REPORT) &&
7711                     num_reports) {
7712                         adv = (void *)(ptr + 1);
7713                         direct_adv = (void *)(ptr + 1);
7714                         ext_adv = (void *)(ptr + 1);
7715
7716                         switch (subevent) {
7717                         case HCI_EV_LE_ADVERTISING_REPORT:
7718                                 bacpy(&hdev->wake_addr, &adv->bdaddr);
7719                                 hdev->wake_addr_type = adv->bdaddr_type;
7720                                 break;
7721                         case HCI_EV_LE_DIRECT_ADV_REPORT:
7722                                 bacpy(&hdev->wake_addr, &direct_adv->bdaddr);
7723                                 hdev->wake_addr_type = direct_adv->bdaddr_type;
7724                                 break;
7725                         case HCI_EV_LE_EXT_ADV_REPORT:
7726                                 bacpy(&hdev->wake_addr, &ext_adv->bdaddr);
7727                                 hdev->wake_addr_type = ext_adv->bdaddr_type;
7728                                 break;
7729                         }
7730                 }
7731         } else {
7732                 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED;
7733         }
7734
7735 unlock:
7736         hci_dev_unlock(hdev);
7737 }
7738
7739 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \
7740 [_op] = { \
7741         .req = false, \
7742         .func = _func, \
7743         .min_len = _min_len, \
7744         .max_len = _max_len, \
7745 }
7746
7747 #define HCI_EV(_op, _func, _len) \
7748         HCI_EV_VL(_op, _func, _len, _len)
7749
7750 #define HCI_EV_STATUS(_op, _func) \
7751         HCI_EV(_op, _func, sizeof(struct hci_ev_status))
7752
7753 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \
7754 [_op] = { \
7755         .req = true, \
7756         .func_req = _func, \
7757         .min_len = _min_len, \
7758         .max_len = _max_len, \
7759 }
7760
7761 #define HCI_EV_REQ(_op, _func, _len) \
7762         HCI_EV_REQ_VL(_op, _func, _len, _len)
7763
7764 /* Entries in this table shall have their position according to the event opcode
7765  * they handle so the use of the macros above is recommend since it does attempt
7766  * to initialize at its proper index using Designated Initializers that way
7767  * events without a callback function don't have entered.
7768  */
7769 static const struct hci_ev {
7770         bool req;
7771         union {
7772                 void (*func)(struct hci_dev *hdev, void *data,
7773                              struct sk_buff *skb);
7774                 void (*func_req)(struct hci_dev *hdev, void *data,
7775                                  struct sk_buff *skb, u16 *opcode, u8 *status,
7776                                  hci_req_complete_t *req_complete,
7777                                  hci_req_complete_skb_t *req_complete_skb);
7778         };
7779         u16  min_len;
7780         u16  max_len;
7781 } hci_ev_table[U8_MAX + 1] = {
7782         /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */
7783         HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt),
7784         /* [0x02 = HCI_EV_INQUIRY_RESULT] */
7785         HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt,
7786                   sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE),
7787         /* [0x03 = HCI_EV_CONN_COMPLETE] */
7788         HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt,
7789                sizeof(struct hci_ev_conn_complete)),
7790         /* [0x04 = HCI_EV_CONN_REQUEST] */
7791         HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt,
7792                sizeof(struct hci_ev_conn_request)),
7793         /* [0x05 = HCI_EV_DISCONN_COMPLETE] */
7794         HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt,
7795                sizeof(struct hci_ev_disconn_complete)),
7796         /* [0x06 = HCI_EV_AUTH_COMPLETE] */
7797         HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt,
7798                sizeof(struct hci_ev_auth_complete)),
7799         /* [0x07 = HCI_EV_REMOTE_NAME] */
7800         HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt,
7801                sizeof(struct hci_ev_remote_name)),
7802         /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */
7803         HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt,
7804                sizeof(struct hci_ev_encrypt_change)),
7805         /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */
7806         HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE,
7807                hci_change_link_key_complete_evt,
7808                sizeof(struct hci_ev_change_link_key_complete)),
7809         /* [0x0b = HCI_EV_REMOTE_FEATURES] */
7810         HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt,
7811                sizeof(struct hci_ev_remote_features)),
7812         /* [0x0e = HCI_EV_CMD_COMPLETE] */
7813         HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt,
7814                       sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE),
7815         /* [0x0f = HCI_EV_CMD_STATUS] */
7816         HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt,
7817                    sizeof(struct hci_ev_cmd_status)),
7818         /* [0x10 = HCI_EV_CMD_STATUS] */
7819         HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt,
7820                sizeof(struct hci_ev_hardware_error)),
7821         /* [0x12 = HCI_EV_ROLE_CHANGE] */
7822         HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt,
7823                sizeof(struct hci_ev_role_change)),
7824         /* [0x13 = HCI_EV_NUM_COMP_PKTS] */
7825         HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt,
7826                   sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE),
7827         /* [0x14 = HCI_EV_MODE_CHANGE] */
7828         HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt,
7829                sizeof(struct hci_ev_mode_change)),
7830         /* [0x16 = HCI_EV_PIN_CODE_REQ] */
7831         HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt,
7832                sizeof(struct hci_ev_pin_code_req)),
7833         /* [0x17 = HCI_EV_LINK_KEY_REQ] */
7834         HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt,
7835                sizeof(struct hci_ev_link_key_req)),
7836         /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */
7837         HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt,
7838                sizeof(struct hci_ev_link_key_notify)),
7839         /* [0x1c = HCI_EV_CLOCK_OFFSET] */
7840         HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt,
7841                sizeof(struct hci_ev_clock_offset)),
7842         /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */
7843         HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt,
7844                sizeof(struct hci_ev_pkt_type_change)),
7845         /* [0x20 = HCI_EV_PSCAN_REP_MODE] */
7846         HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt,
7847                sizeof(struct hci_ev_pscan_rep_mode)),
7848         /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */
7849         HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI,
7850                   hci_inquiry_result_with_rssi_evt,
7851                   sizeof(struct hci_ev_inquiry_result_rssi),
7852                   HCI_MAX_EVENT_SIZE),
7853         /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */
7854         HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt,
7855                sizeof(struct hci_ev_remote_ext_features)),
7856         /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */
7857         HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt,
7858                sizeof(struct hci_ev_sync_conn_complete)),
7859         /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */
7860         HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT,
7861                   hci_extended_inquiry_result_evt,
7862                   sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE),
7863         /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */
7864         HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt,
7865                sizeof(struct hci_ev_key_refresh_complete)),
7866         /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */
7867         HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt,
7868                sizeof(struct hci_ev_io_capa_request)),
7869         /* [0x32 = HCI_EV_IO_CAPA_REPLY] */
7870         HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt,
7871                sizeof(struct hci_ev_io_capa_reply)),
7872         /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */
7873         HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt,
7874                sizeof(struct hci_ev_user_confirm_req)),
7875         /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */
7876         HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt,
7877                sizeof(struct hci_ev_user_passkey_req)),
7878         /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */
7879         HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt,
7880                sizeof(struct hci_ev_remote_oob_data_request)),
7881         /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */
7882         HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt,
7883                sizeof(struct hci_ev_simple_pair_complete)),
7884         /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */
7885         HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt,
7886                sizeof(struct hci_ev_user_passkey_notify)),
7887         /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */
7888         HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt,
7889                sizeof(struct hci_ev_keypress_notify)),
7890         /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */
7891         HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt,
7892                sizeof(struct hci_ev_remote_host_features)),
7893         /* [0x3e = HCI_EV_LE_META] */
7894         HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt,
7895                       sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE),
7896 #if IS_ENABLED(CONFIG_BT_HS)
7897         /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */
7898         HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt,
7899                sizeof(struct hci_ev_phy_link_complete)),
7900         /* [0x41 = HCI_EV_CHANNEL_SELECTED] */
7901         HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt,
7902                sizeof(struct hci_ev_channel_selected)),
7903         /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */
7904         HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE,
7905                hci_disconn_loglink_complete_evt,
7906                sizeof(struct hci_ev_disconn_logical_link_complete)),
7907         /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */
7908         HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt,
7909                sizeof(struct hci_ev_logical_link_complete)),
7910         /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */
7911         HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE,
7912                hci_disconn_phylink_complete_evt,
7913                sizeof(struct hci_ev_disconn_phy_link_complete)),
7914 #endif
7915         /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */
7916         HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt,
7917                sizeof(struct hci_ev_num_comp_blocks)),
7918 #ifdef TIZEN_BT
7919         /* [0xFF = HCI_EV_VENDOR_SPECIFIC] */
7920         HCI_EV(HCI_EV_VENDOR_SPECIFIC, hci_vendor_specific_evt,
7921                sizeof(struct hci_ev_vendor_specific)),
7922 #else
7923         /* [0xff = HCI_EV_VENDOR] */
7924         HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE),
7925 #endif
7926 };
7927
7928 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
7929                            u16 *opcode, u8 *status,
7930                            hci_req_complete_t *req_complete,
7931                            hci_req_complete_skb_t *req_complete_skb)
7932 {
7933         const struct hci_ev *ev = &hci_ev_table[event];
7934         void *data;
7935
7936         if (!ev->func)
7937                 return;
7938
7939         if (skb->len < ev->min_len) {
7940                 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u",
7941                            event, skb->len, ev->min_len);
7942                 return;
7943         }
7944
7945         /* Just warn if the length is over max_len size it still be
7946          * possible to partially parse the event so leave to callback to
7947          * decide if that is acceptable.
7948          */
7949         if (skb->len > ev->max_len)
7950                 bt_dev_warn_ratelimited(hdev,
7951                                         "unexpected event 0x%2.2x length: %u > %u",
7952                                         event, skb->len, ev->max_len);
7953
7954         data = hci_ev_skb_pull(hdev, skb, event, ev->min_len);
7955         if (!data)
7956                 return;
7957
7958         if (ev->req)
7959                 ev->func_req(hdev, data, skb, opcode, status, req_complete,
7960                              req_complete_skb);
7961         else
7962                 ev->func(hdev, data, skb);
7963 }
7964
7965 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
7966 {
7967         struct hci_event_hdr *hdr = (void *) skb->data;
7968         hci_req_complete_t req_complete = NULL;
7969         hci_req_complete_skb_t req_complete_skb = NULL;
7970         struct sk_buff *orig_skb = NULL;
7971         u8 status = 0, event, req_evt = 0;
7972         u16 opcode = HCI_OP_NOP;
7973
7974         if (skb->len < sizeof(*hdr)) {
7975                 bt_dev_err(hdev, "Malformed HCI Event");
7976                 goto done;
7977         }
7978
7979         kfree_skb(hdev->recv_event);
7980         hdev->recv_event = skb_clone(skb, GFP_KERNEL);
7981
7982         event = hdr->evt;
7983         if (!event) {
7984                 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",
7985                             event);
7986                 goto done;
7987         }
7988
7989         /* Only match event if command OGF is not for LE */
7990         if (hdev->sent_cmd &&
7991             hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 &&
7992             hci_skb_event(hdev->sent_cmd) == event) {
7993                 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd),
7994                                      status, &req_complete, &req_complete_skb);
7995                 req_evt = event;
7996         }
7997
7998         /* If it looks like we might end up having to call
7999          * req_complete_skb, store a pristine copy of the skb since the
8000          * various handlers may modify the original one through
8001          * skb_pull() calls, etc.
8002          */
8003         if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
8004             event == HCI_EV_CMD_COMPLETE)
8005                 orig_skb = skb_clone(skb, GFP_KERNEL);
8006
8007         skb_pull(skb, HCI_EVENT_HDR_SIZE);
8008
8009         /* Store wake reason if we're suspended */
8010         hci_store_wake_reason(hdev, event, skb);
8011
8012         bt_dev_dbg(hdev, "event 0x%2.2x", event);
8013
8014         hci_event_func(hdev, event, skb, &opcode, &status, &req_complete,
8015                        &req_complete_skb);
8016
8017         if (req_complete) {
8018                 req_complete(hdev, status, opcode);
8019         } else if (req_complete_skb) {
8020                 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
8021                         kfree_skb(orig_skb);
8022                         orig_skb = NULL;
8023                 }
8024                 req_complete_skb(hdev, status, opcode, orig_skb);
8025         }
8026
8027 done:
8028         kfree_skb(orig_skb);
8029         kfree_skb(skb);
8030         hdev->stat.evt_rx++;
8031 }