1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License version 2 as 9 published by the Free Software Foundation; 10 11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 22 SOFTWARE IS DISCLAIMED. 23 */ 24 25 #ifndef __HCI_CORE_H 26 #define __HCI_CORE_H 27 28 #include <net/bluetooth/hci.h> 29 #include <net/bluetooth/hci_sock.h> 30 31 /* HCI priority */ 32 #define HCI_PRIO_MAX 7 33 34 /* HCI Core structures */ 35 struct inquiry_data { 36 bdaddr_t bdaddr; 37 __u8 pscan_rep_mode; 38 __u8 pscan_period_mode; 39 __u8 pscan_mode; 40 __u8 dev_class[3]; 41 __le16 clock_offset; 42 __s8 rssi; 43 __u8 ssp_mode; 44 }; 45 46 struct inquiry_entry { 47 struct list_head all; /* inq_cache.all */ 48 struct list_head list; /* unknown or resolve */ 49 enum { 50 NAME_NOT_KNOWN, 51 NAME_NEEDED, 52 NAME_PENDING, 53 NAME_KNOWN, 54 } name_state; 55 __u32 timestamp; 56 struct inquiry_data data; 57 }; 58 59 struct discovery_state { 60 int type; 61 enum { 62 DISCOVERY_STOPPED, 63 DISCOVERY_STARTING, 64 DISCOVERY_FINDING, 65 DISCOVERY_RESOLVING, 66 DISCOVERY_STOPPING, 67 } state; 68 struct list_head all; /* All devices found during inquiry */ 69 struct list_head unknown; /* Name state not known */ 70 struct list_head resolve; /* Name needs to be resolved */ 71 __u32 timestamp; 72 bdaddr_t last_adv_addr; 73 u8 last_adv_addr_type; 74 s8 last_adv_rssi; 75 u32 last_adv_flags; 76 u8 last_adv_data[HCI_MAX_AD_LENGTH]; 77 u8 last_adv_data_len; 78 bool report_invalid_rssi; 79 bool result_filtering; 80 s8 rssi; 81 u16 uuid_count; 82 u8 (*uuids)[16]; 83 unsigned long scan_start; 84 unsigned long scan_duration; 85 }; 86 87 struct hci_conn_hash { 88 struct list_head list; 89 unsigned int acl_num; 90 unsigned int amp_num; 91 unsigned int sco_num; 92 unsigned int le_num; 93 unsigned int le_num_slave; 94 }; 95 96 struct bdaddr_list { 97 struct list_head list; 98 bdaddr_t bdaddr; 99 u8 bdaddr_type; 100 }; 101 102 struct bt_uuid { 103 struct list_head list; 104 u8 uuid[16]; 105 u8 size; 106 u8 svc_hint; 107 }; 108 109 struct smp_csrk { 110 bdaddr_t bdaddr; 111 u8 bdaddr_type; 112 u8 type; 113 u8 val[16]; 114 }; 115 116 struct smp_ltk { 117 struct list_head list; 118 struct rcu_head rcu; 119 bdaddr_t bdaddr; 120 u8 bdaddr_type; 121 u8 authenticated; 122 u8 type; 123 u8 enc_size; 124 __le16 ediv; 125 __le64 rand; 126 u8 val[16]; 127 }; 128 129 struct smp_irk { 130 struct list_head list; 131 struct rcu_head rcu; 132 bdaddr_t rpa; 133 bdaddr_t bdaddr; 134 u8 addr_type; 135 u8 val[16]; 136 }; 137 138 struct link_key { 139 struct list_head list; 140 struct rcu_head rcu; 141 bdaddr_t bdaddr; 142 u8 type; 143 u8 val[HCI_LINK_KEY_SIZE]; 144 u8 pin_len; 145 }; 146 147 struct oob_data { 148 struct list_head list; 149 bdaddr_t bdaddr; 150 u8 bdaddr_type; 151 u8 present; 152 u8 hash192[16]; 153 u8 rand192[16]; 154 u8 hash256[16]; 155 u8 rand256[16]; 156 }; 157 158 struct adv_info { 159 struct list_head list; 160 bool pending; 161 __u8 instance; 162 __u32 flags; 163 __u16 timeout; 164 __u16 remaining_time; 165 __u16 duration; 166 __u16 adv_data_len; 167 __u8 adv_data[HCI_MAX_AD_LENGTH]; 168 __u16 scan_rsp_len; 169 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 170 }; 171 172 #define HCI_MAX_ADV_INSTANCES 5 173 #define HCI_DEFAULT_ADV_DURATION 2 174 175 #define HCI_MAX_SHORT_NAME_LENGTH 10 176 177 /* Default LE RPA expiry time, 15 minutes */ 178 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 179 180 /* Default min/max age of connection information (1s/3s) */ 181 #define DEFAULT_CONN_INFO_MIN_AGE 1000 182 #define DEFAULT_CONN_INFO_MAX_AGE 3000 183 184 struct amp_assoc { 185 __u16 len; 186 __u16 offset; 187 __u16 rem_len; 188 __u16 len_so_far; 189 __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; 190 }; 191 192 #define HCI_MAX_PAGES 3 193 194 struct hci_dev { 195 struct list_head list; 196 struct mutex lock; 197 198 char name[8]; 199 unsigned long flags; 200 __u16 id; 201 __u8 bus; 202 __u8 dev_type; 203 bdaddr_t bdaddr; 204 bdaddr_t setup_addr; 205 bdaddr_t public_addr; 206 bdaddr_t random_addr; 207 bdaddr_t static_addr; 208 __u8 adv_addr_type; 209 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 210 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 211 __u8 eir[HCI_MAX_EIR_LENGTH]; 212 __u8 dev_class[3]; 213 __u8 major_class; 214 __u8 minor_class; 215 __u8 max_page; 216 __u8 features[HCI_MAX_PAGES][8]; 217 __u8 le_features[8]; 218 __u8 le_white_list_size; 219 __u8 le_states[8]; 220 __u8 commands[64]; 221 __u8 hci_ver; 222 __u16 hci_rev; 223 __u8 lmp_ver; 224 __u16 manufacturer; 225 __u16 lmp_subver; 226 __u16 voice_setting; 227 __u8 num_iac; 228 __u8 stored_max_keys; 229 __u8 stored_num_keys; 230 __u8 io_capability; 231 __s8 inq_tx_power; 232 __u16 page_scan_interval; 233 __u16 page_scan_window; 234 __u8 page_scan_type; 235 __u8 le_adv_channel_map; 236 __u16 le_adv_min_interval; 237 __u16 le_adv_max_interval; 238 __u8 le_scan_type; 239 __u16 le_scan_interval; 240 __u16 le_scan_window; 241 __u16 le_conn_min_interval; 242 __u16 le_conn_max_interval; 243 __u16 le_conn_latency; 244 __u16 le_supv_timeout; 245 __u16 le_def_tx_len; 246 __u16 le_def_tx_time; 247 __u16 le_max_tx_len; 248 __u16 le_max_tx_time; 249 __u16 le_max_rx_len; 250 __u16 le_max_rx_time; 251 __u16 discov_interleaved_timeout; 252 __u16 conn_info_min_age; 253 __u16 conn_info_max_age; 254 __u8 ssp_debug_mode; 255 __u8 hw_error_code; 256 __u32 clock; 257 258 __u16 devid_source; 259 __u16 devid_vendor; 260 __u16 devid_product; 261 __u16 devid_version; 262 263 __u16 pkt_type; 264 __u16 esco_type; 265 __u16 link_policy; 266 __u16 link_mode; 267 268 __u32 idle_timeout; 269 __u16 sniff_min_interval; 270 __u16 sniff_max_interval; 271 272 __u8 amp_status; 273 __u32 amp_total_bw; 274 __u32 amp_max_bw; 275 __u32 amp_min_latency; 276 __u32 amp_max_pdu; 277 __u8 amp_type; 278 __u16 amp_pal_cap; 279 __u16 amp_assoc_size; 280 __u32 amp_max_flush_to; 281 __u32 amp_be_flush_to; 282 283 struct amp_assoc loc_assoc; 284 285 __u8 flow_ctl_mode; 286 287 unsigned int auto_accept_delay; 288 289 unsigned long quirks; 290 291 atomic_t cmd_cnt; 292 unsigned int acl_cnt; 293 unsigned int sco_cnt; 294 unsigned int le_cnt; 295 296 unsigned int acl_mtu; 297 unsigned int sco_mtu; 298 unsigned int le_mtu; 299 unsigned int acl_pkts; 300 unsigned int sco_pkts; 301 unsigned int le_pkts; 302 303 __u16 block_len; 304 __u16 block_mtu; 305 __u16 num_blocks; 306 __u16 block_cnt; 307 308 unsigned long acl_last_tx; 309 unsigned long sco_last_tx; 310 unsigned long le_last_tx; 311 312 struct workqueue_struct *workqueue; 313 struct workqueue_struct *req_workqueue; 314 315 struct work_struct power_on; 316 struct delayed_work power_off; 317 struct work_struct error_reset; 318 319 __u16 discov_timeout; 320 struct delayed_work discov_off; 321 322 struct delayed_work service_cache; 323 324 struct delayed_work cmd_timer; 325 326 struct work_struct rx_work; 327 struct work_struct cmd_work; 328 struct work_struct tx_work; 329 330 struct sk_buff_head rx_q; 331 struct sk_buff_head raw_q; 332 struct sk_buff_head cmd_q; 333 334 struct sk_buff *sent_cmd; 335 336 struct mutex req_lock; 337 wait_queue_head_t req_wait_q; 338 __u32 req_status; 339 __u32 req_result; 340 struct sk_buff *req_skb; 341 342 void *smp_data; 343 void *smp_bredr_data; 344 345 struct discovery_state discovery; 346 struct hci_conn_hash conn_hash; 347 348 struct list_head mgmt_pending; 349 struct list_head blacklist; 350 struct list_head whitelist; 351 struct list_head uuids; 352 struct list_head link_keys; 353 struct list_head long_term_keys; 354 struct list_head identity_resolving_keys; 355 struct list_head remote_oob_data; 356 struct list_head le_white_list; 357 struct list_head le_conn_params; 358 struct list_head pend_le_conns; 359 struct list_head pend_le_reports; 360 361 struct hci_dev_stats stat; 362 363 atomic_t promisc; 364 365 struct dentry *debugfs; 366 367 struct device dev; 368 369 struct rfkill *rfkill; 370 371 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 372 373 struct delayed_work le_scan_disable; 374 struct delayed_work le_scan_restart; 375 376 __s8 adv_tx_power; 377 __u8 adv_data[HCI_MAX_AD_LENGTH]; 378 __u8 adv_data_len; 379 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; 380 __u8 scan_rsp_data_len; 381 382 struct list_head adv_instances; 383 unsigned int adv_instance_cnt; 384 __u8 cur_adv_instance; 385 __u16 adv_instance_timeout; 386 struct delayed_work adv_instance_expire; 387 388 __u8 irk[16]; 389 __u32 rpa_timeout; 390 struct delayed_work rpa_expired; 391 bdaddr_t rpa; 392 393 int (*open)(struct hci_dev *hdev); 394 int (*close)(struct hci_dev *hdev); 395 int (*flush)(struct hci_dev *hdev); 396 int (*setup)(struct hci_dev *hdev); 397 int (*shutdown)(struct hci_dev *hdev); 398 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 399 void (*notify)(struct hci_dev *hdev, unsigned int evt); 400 void (*hw_error)(struct hci_dev *hdev, u8 code); 401 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 402 }; 403 404 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 405 406 struct hci_conn { 407 struct list_head list; 408 409 atomic_t refcnt; 410 411 bdaddr_t dst; 412 __u8 dst_type; 413 bdaddr_t src; 414 __u8 src_type; 415 bdaddr_t init_addr; 416 __u8 init_addr_type; 417 bdaddr_t resp_addr; 418 __u8 resp_addr_type; 419 __u16 handle; 420 __u16 state; 421 __u8 mode; 422 __u8 type; 423 __u8 role; 424 bool out; 425 __u8 attempt; 426 __u8 dev_class[3]; 427 __u8 features[HCI_MAX_PAGES][8]; 428 __u16 pkt_type; 429 __u16 link_policy; 430 __u8 key_type; 431 __u8 auth_type; 432 __u8 sec_level; 433 __u8 pending_sec_level; 434 __u8 pin_length; 435 __u8 enc_key_size; 436 __u8 io_capability; 437 __u32 passkey_notify; 438 __u8 passkey_entered; 439 __u16 disc_timeout; 440 __u16 conn_timeout; 441 __u16 setting; 442 __u16 le_conn_min_interval; 443 __u16 le_conn_max_interval; 444 __u16 le_conn_interval; 445 __u16 le_conn_latency; 446 __u16 le_supv_timeout; 447 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 448 __u8 le_adv_data_len; 449 __s8 rssi; 450 __s8 tx_power; 451 __s8 max_tx_power; 452 unsigned long flags; 453 454 __u32 clock; 455 __u16 clock_accuracy; 456 457 unsigned long conn_info_timestamp; 458 459 __u8 remote_cap; 460 __u8 remote_auth; 461 __u8 remote_id; 462 463 unsigned int sent; 464 465 struct sk_buff_head data_q; 466 struct list_head chan_list; 467 468 struct delayed_work disc_work; 469 struct delayed_work auto_accept_work; 470 struct delayed_work idle_work; 471 struct delayed_work le_conn_timeout; 472 473 struct device dev; 474 struct dentry *debugfs; 475 476 struct hci_dev *hdev; 477 void *l2cap_data; 478 void *sco_data; 479 struct amp_mgr *amp_mgr; 480 481 struct hci_conn *link; 482 483 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 484 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 485 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 486 }; 487 488 struct hci_chan { 489 struct list_head list; 490 __u16 handle; 491 struct hci_conn *conn; 492 struct sk_buff_head data_q; 493 unsigned int sent; 494 __u8 state; 495 }; 496 497 struct hci_conn_params { 498 struct list_head list; 499 struct list_head action; 500 501 bdaddr_t addr; 502 u8 addr_type; 503 504 u16 conn_min_interval; 505 u16 conn_max_interval; 506 u16 conn_latency; 507 u16 supervision_timeout; 508 509 enum { 510 HCI_AUTO_CONN_DISABLED, 511 HCI_AUTO_CONN_REPORT, 512 HCI_AUTO_CONN_DIRECT, 513 HCI_AUTO_CONN_ALWAYS, 514 HCI_AUTO_CONN_LINK_LOSS, 515 HCI_AUTO_CONN_EXPLICIT, 516 } auto_connect; 517 518 struct hci_conn *conn; 519 bool explicit_connect; 520 }; 521 522 extern struct list_head hci_dev_list; 523 extern struct list_head hci_cb_list; 524 extern rwlock_t hci_dev_list_lock; 525 extern struct mutex hci_cb_list_lock; 526 527 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 528 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 529 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 530 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 531 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 532 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 533 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 534 535 #define hci_dev_clear_volatile_flags(hdev) \ 536 do { \ 537 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 538 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 539 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 540 } while (0) 541 542 /* ----- HCI interface to upper protocols ----- */ 543 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 544 int l2cap_disconn_ind(struct hci_conn *hcon); 545 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 546 547 #if IS_ENABLED(CONFIG_BT_BREDR) 548 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 549 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 550 #else 551 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 552 __u8 *flags) 553 { 554 return 0; 555 } 556 557 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 558 { 559 } 560 #endif 561 562 /* ----- Inquiry cache ----- */ 563 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 564 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 565 566 static inline void discovery_init(struct hci_dev *hdev) 567 { 568 hdev->discovery.state = DISCOVERY_STOPPED; 569 INIT_LIST_HEAD(&hdev->discovery.all); 570 INIT_LIST_HEAD(&hdev->discovery.unknown); 571 INIT_LIST_HEAD(&hdev->discovery.resolve); 572 hdev->discovery.report_invalid_rssi = true; 573 hdev->discovery.rssi = HCI_RSSI_INVALID; 574 } 575 576 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 577 { 578 hdev->discovery.result_filtering = false; 579 hdev->discovery.report_invalid_rssi = true; 580 hdev->discovery.rssi = HCI_RSSI_INVALID; 581 hdev->discovery.uuid_count = 0; 582 kfree(hdev->discovery.uuids); 583 hdev->discovery.uuids = NULL; 584 hdev->discovery.scan_start = 0; 585 hdev->discovery.scan_duration = 0; 586 } 587 588 bool hci_discovery_active(struct hci_dev *hdev); 589 590 void hci_discovery_set_state(struct hci_dev *hdev, int state); 591 592 static inline int inquiry_cache_empty(struct hci_dev *hdev) 593 { 594 return list_empty(&hdev->discovery.all); 595 } 596 597 static inline long inquiry_cache_age(struct hci_dev *hdev) 598 { 599 struct discovery_state *c = &hdev->discovery; 600 return jiffies - c->timestamp; 601 } 602 603 static inline long inquiry_entry_age(struct inquiry_entry *e) 604 { 605 return jiffies - e->timestamp; 606 } 607 608 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 609 bdaddr_t *bdaddr); 610 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 611 bdaddr_t *bdaddr); 612 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 613 bdaddr_t *bdaddr, 614 int state); 615 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 616 struct inquiry_entry *ie); 617 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 618 bool name_known); 619 void hci_inquiry_cache_flush(struct hci_dev *hdev); 620 621 /* ----- HCI Connections ----- */ 622 enum { 623 HCI_CONN_AUTH_PEND, 624 HCI_CONN_REAUTH_PEND, 625 HCI_CONN_ENCRYPT_PEND, 626 HCI_CONN_RSWITCH_PEND, 627 HCI_CONN_MODE_CHANGE_PEND, 628 HCI_CONN_SCO_SETUP_PEND, 629 HCI_CONN_MGMT_CONNECTED, 630 HCI_CONN_SSP_ENABLED, 631 HCI_CONN_SC_ENABLED, 632 HCI_CONN_AES_CCM, 633 HCI_CONN_POWER_SAVE, 634 HCI_CONN_FLUSH_KEY, 635 HCI_CONN_ENCRYPT, 636 HCI_CONN_AUTH, 637 HCI_CONN_SECURE, 638 HCI_CONN_FIPS, 639 HCI_CONN_STK_ENCRYPT, 640 HCI_CONN_AUTH_INITIATOR, 641 HCI_CONN_DROP, 642 HCI_CONN_PARAM_REMOVAL_PEND, 643 HCI_CONN_NEW_LINK_KEY, 644 HCI_CONN_SCANNING, 645 }; 646 647 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 648 { 649 struct hci_dev *hdev = conn->hdev; 650 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 651 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 652 } 653 654 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 655 { 656 struct hci_dev *hdev = conn->hdev; 657 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 658 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 659 } 660 661 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 662 { 663 struct hci_conn_hash *h = &hdev->conn_hash; 664 list_add_rcu(&c->list, &h->list); 665 switch (c->type) { 666 case ACL_LINK: 667 h->acl_num++; 668 break; 669 case AMP_LINK: 670 h->amp_num++; 671 break; 672 case LE_LINK: 673 h->le_num++; 674 if (c->role == HCI_ROLE_SLAVE) 675 h->le_num_slave++; 676 break; 677 case SCO_LINK: 678 case ESCO_LINK: 679 h->sco_num++; 680 break; 681 } 682 } 683 684 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 685 { 686 struct hci_conn_hash *h = &hdev->conn_hash; 687 688 list_del_rcu(&c->list); 689 synchronize_rcu(); 690 691 switch (c->type) { 692 case ACL_LINK: 693 h->acl_num--; 694 break; 695 case AMP_LINK: 696 h->amp_num--; 697 break; 698 case LE_LINK: 699 h->le_num--; 700 if (c->role == HCI_ROLE_SLAVE) 701 h->le_num_slave--; 702 break; 703 case SCO_LINK: 704 case ESCO_LINK: 705 h->sco_num--; 706 break; 707 } 708 } 709 710 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 711 { 712 struct hci_conn_hash *h = &hdev->conn_hash; 713 switch (type) { 714 case ACL_LINK: 715 return h->acl_num; 716 case AMP_LINK: 717 return h->amp_num; 718 case LE_LINK: 719 return h->le_num; 720 case SCO_LINK: 721 case ESCO_LINK: 722 return h->sco_num; 723 default: 724 return 0; 725 } 726 } 727 728 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 729 { 730 struct hci_conn_hash *c = &hdev->conn_hash; 731 732 return c->acl_num + c->amp_num + c->sco_num + c->le_num; 733 } 734 735 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 736 { 737 struct hci_conn_hash *h = &hdev->conn_hash; 738 struct hci_conn *c; 739 __u8 type = INVALID_LINK; 740 741 rcu_read_lock(); 742 743 list_for_each_entry_rcu(c, &h->list, list) { 744 if (c->handle == handle) { 745 type = c->type; 746 break; 747 } 748 } 749 750 rcu_read_unlock(); 751 752 return type; 753 } 754 755 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 756 __u16 handle) 757 { 758 struct hci_conn_hash *h = &hdev->conn_hash; 759 struct hci_conn *c; 760 761 rcu_read_lock(); 762 763 list_for_each_entry_rcu(c, &h->list, list) { 764 if (c->handle == handle) { 765 rcu_read_unlock(); 766 return c; 767 } 768 } 769 rcu_read_unlock(); 770 771 return NULL; 772 } 773 774 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 775 __u8 type, bdaddr_t *ba) 776 { 777 struct hci_conn_hash *h = &hdev->conn_hash; 778 struct hci_conn *c; 779 780 rcu_read_lock(); 781 782 list_for_each_entry_rcu(c, &h->list, list) { 783 if (c->type == type && !bacmp(&c->dst, ba)) { 784 rcu_read_unlock(); 785 return c; 786 } 787 } 788 789 rcu_read_unlock(); 790 791 return NULL; 792 } 793 794 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 795 __u8 type, __u16 state) 796 { 797 struct hci_conn_hash *h = &hdev->conn_hash; 798 struct hci_conn *c; 799 800 rcu_read_lock(); 801 802 list_for_each_entry_rcu(c, &h->list, list) { 803 if (c->type == type && c->state == state) { 804 rcu_read_unlock(); 805 return c; 806 } 807 } 808 809 rcu_read_unlock(); 810 811 return NULL; 812 } 813 814 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 815 { 816 struct hci_conn_hash *h = &hdev->conn_hash; 817 struct hci_conn *c; 818 819 rcu_read_lock(); 820 821 list_for_each_entry_rcu(c, &h->list, list) { 822 if (c->type == LE_LINK && c->state == BT_CONNECT && 823 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 824 rcu_read_unlock(); 825 return c; 826 } 827 } 828 829 rcu_read_unlock(); 830 831 return NULL; 832 } 833 834 int hci_disconnect(struct hci_conn *conn, __u8 reason); 835 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 836 void hci_sco_setup(struct hci_conn *conn, __u8 status); 837 838 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 839 u8 role); 840 int hci_conn_del(struct hci_conn *conn); 841 void hci_conn_hash_flush(struct hci_dev *hdev); 842 void hci_conn_check_pending(struct hci_dev *hdev); 843 844 struct hci_chan *hci_chan_create(struct hci_conn *conn); 845 void hci_chan_del(struct hci_chan *chan); 846 void hci_chan_list_flush(struct hci_conn *conn); 847 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 848 849 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 850 u8 dst_type, u8 sec_level, 851 u16 conn_timeout, u8 role); 852 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 853 u8 dst_type, u8 sec_level, u16 conn_timeout, 854 u8 role); 855 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 856 u8 sec_level, u8 auth_type); 857 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 858 __u16 setting); 859 int hci_conn_check_link_mode(struct hci_conn *conn); 860 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 861 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 862 bool initiator); 863 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 864 865 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 866 867 void hci_le_conn_failed(struct hci_conn *conn, u8 status); 868 869 /* 870 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 871 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 872 * working or anything else. They just guarantee that the object is available 873 * and can be dereferenced. So you can use its locks, local variables and any 874 * other constant data. 875 * Before accessing runtime data, you _must_ lock the object and then check that 876 * it is still running. As soon as you release the locks, the connection might 877 * get dropped, though. 878 * 879 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 880 * how long the underlying connection is held. So every channel that runs on the 881 * hci_conn object calls this to prevent the connection from disappearing. As 882 * long as you hold a device, you must also guarantee that you have a valid 883 * reference to the device via hci_conn_get() (or the initial reference from 884 * hci_conn_add()). 885 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 886 * break because nobody cares for that. But this means, we cannot use 887 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 888 */ 889 890 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 891 { 892 get_device(&conn->dev); 893 return conn; 894 } 895 896 static inline void hci_conn_put(struct hci_conn *conn) 897 { 898 put_device(&conn->dev); 899 } 900 901 static inline void hci_conn_hold(struct hci_conn *conn) 902 { 903 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 904 905 atomic_inc(&conn->refcnt); 906 cancel_delayed_work(&conn->disc_work); 907 } 908 909 static inline void hci_conn_drop(struct hci_conn *conn) 910 { 911 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 912 913 if (atomic_dec_and_test(&conn->refcnt)) { 914 unsigned long timeo; 915 916 switch (conn->type) { 917 case ACL_LINK: 918 case LE_LINK: 919 cancel_delayed_work(&conn->idle_work); 920 if (conn->state == BT_CONNECTED) { 921 timeo = conn->disc_timeout; 922 if (!conn->out) 923 timeo *= 2; 924 } else { 925 timeo = 0; 926 } 927 break; 928 929 case AMP_LINK: 930 timeo = conn->disc_timeout; 931 break; 932 933 default: 934 timeo = 0; 935 break; 936 } 937 938 cancel_delayed_work(&conn->disc_work); 939 queue_delayed_work(conn->hdev->workqueue, 940 &conn->disc_work, timeo); 941 } 942 } 943 944 /* ----- HCI Devices ----- */ 945 static inline void hci_dev_put(struct hci_dev *d) 946 { 947 BT_DBG("%s orig refcnt %d", d->name, 948 atomic_read(&d->dev.kobj.kref.refcount)); 949 950 put_device(&d->dev); 951 } 952 953 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 954 { 955 BT_DBG("%s orig refcnt %d", d->name, 956 atomic_read(&d->dev.kobj.kref.refcount)); 957 958 get_device(&d->dev); 959 return d; 960 } 961 962 #define hci_dev_lock(d) mutex_lock(&d->lock) 963 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 964 965 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 966 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 967 968 static inline void *hci_get_drvdata(struct hci_dev *hdev) 969 { 970 return dev_get_drvdata(&hdev->dev); 971 } 972 973 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 974 { 975 dev_set_drvdata(&hdev->dev, data); 976 } 977 978 struct hci_dev *hci_dev_get(int index); 979 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src); 980 981 struct hci_dev *hci_alloc_dev(void); 982 void hci_free_dev(struct hci_dev *hdev); 983 int hci_register_dev(struct hci_dev *hdev); 984 void hci_unregister_dev(struct hci_dev *hdev); 985 int hci_suspend_dev(struct hci_dev *hdev); 986 int hci_resume_dev(struct hci_dev *hdev); 987 int hci_reset_dev(struct hci_dev *hdev); 988 int hci_dev_open(__u16 dev); 989 int hci_dev_close(__u16 dev); 990 int hci_dev_reset(__u16 dev); 991 int hci_dev_reset_stat(__u16 dev); 992 int hci_dev_cmd(unsigned int cmd, void __user *arg); 993 int hci_get_dev_list(void __user *arg); 994 int hci_get_dev_info(void __user *arg); 995 int hci_get_conn_list(void __user *arg); 996 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 997 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 998 int hci_inquiry(void __user *arg); 999 1000 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1001 bdaddr_t *bdaddr, u8 type); 1002 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1003 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1004 void hci_bdaddr_list_clear(struct list_head *list); 1005 1006 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1007 bdaddr_t *addr, u8 addr_type); 1008 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1009 bdaddr_t *addr, u8 addr_type); 1010 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1011 void hci_conn_params_clear_all(struct hci_dev *hdev); 1012 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1013 1014 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1015 bdaddr_t *addr, 1016 u8 addr_type); 1017 struct hci_conn_params *hci_explicit_connect_lookup(struct hci_dev *hdev, 1018 bdaddr_t *addr, 1019 u8 addr_type); 1020 1021 void hci_uuids_clear(struct hci_dev *hdev); 1022 1023 void hci_link_keys_clear(struct hci_dev *hdev); 1024 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1025 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1026 bdaddr_t *bdaddr, u8 *val, u8 type, 1027 u8 pin_len, bool *persistent); 1028 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1029 u8 addr_type, u8 type, u8 authenticated, 1030 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1031 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1032 u8 addr_type, u8 role); 1033 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1034 void hci_smp_ltks_clear(struct hci_dev *hdev); 1035 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1036 1037 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1038 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1039 u8 addr_type); 1040 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1041 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1042 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1043 void hci_smp_irks_clear(struct hci_dev *hdev); 1044 1045 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1046 1047 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1048 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1049 bdaddr_t *bdaddr, u8 bdaddr_type); 1050 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1051 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1052 u8 *hash256, u8 *rand256); 1053 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1054 u8 bdaddr_type); 1055 1056 void hci_adv_instances_clear(struct hci_dev *hdev); 1057 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1058 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1059 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags, 1060 u16 adv_data_len, u8 *adv_data, 1061 u16 scan_rsp_len, u8 *scan_rsp_data, 1062 u16 timeout, u16 duration); 1063 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1064 1065 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1066 1067 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1068 1069 void hci_init_sysfs(struct hci_dev *hdev); 1070 void hci_conn_init_sysfs(struct hci_conn *conn); 1071 void hci_conn_add_sysfs(struct hci_conn *conn); 1072 void hci_conn_del_sysfs(struct hci_conn *conn); 1073 1074 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1075 1076 /* ----- LMP capabilities ----- */ 1077 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1078 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1079 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1080 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1081 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1082 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1083 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1084 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1085 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1086 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1087 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1088 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1089 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1090 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1091 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1092 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1093 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1094 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1095 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1096 1097 /* ----- Extended LMP capabilities ----- */ 1098 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER) 1099 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE) 1100 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1101 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1102 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1103 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1104 1105 /* ----- Host capabilities ----- */ 1106 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1107 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1108 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1109 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1110 1111 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1112 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1113 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1114 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1115 1116 /* ----- HCI protocols ----- */ 1117 #define HCI_PROTO_DEFER 0x01 1118 1119 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1120 __u8 type, __u8 *flags) 1121 { 1122 switch (type) { 1123 case ACL_LINK: 1124 return l2cap_connect_ind(hdev, bdaddr); 1125 1126 case SCO_LINK: 1127 case ESCO_LINK: 1128 return sco_connect_ind(hdev, bdaddr, flags); 1129 1130 default: 1131 BT_ERR("unknown link type %d", type); 1132 return -EINVAL; 1133 } 1134 } 1135 1136 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1137 { 1138 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1139 return HCI_ERROR_REMOTE_USER_TERM; 1140 1141 return l2cap_disconn_ind(conn); 1142 } 1143 1144 /* ----- HCI callbacks ----- */ 1145 struct hci_cb { 1146 struct list_head list; 1147 1148 char *name; 1149 1150 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1151 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1152 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1153 __u8 encrypt); 1154 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1155 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1156 }; 1157 1158 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1159 { 1160 struct hci_cb *cb; 1161 1162 mutex_lock(&hci_cb_list_lock); 1163 list_for_each_entry(cb, &hci_cb_list, list) { 1164 if (cb->connect_cfm) 1165 cb->connect_cfm(conn, status); 1166 } 1167 mutex_unlock(&hci_cb_list_lock); 1168 1169 if (conn->connect_cfm_cb) 1170 conn->connect_cfm_cb(conn, status); 1171 } 1172 1173 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1174 { 1175 struct hci_cb *cb; 1176 1177 mutex_lock(&hci_cb_list_lock); 1178 list_for_each_entry(cb, &hci_cb_list, list) { 1179 if (cb->disconn_cfm) 1180 cb->disconn_cfm(conn, reason); 1181 } 1182 mutex_unlock(&hci_cb_list_lock); 1183 1184 if (conn->disconn_cfm_cb) 1185 conn->disconn_cfm_cb(conn, reason); 1186 } 1187 1188 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1189 { 1190 struct hci_cb *cb; 1191 __u8 encrypt; 1192 1193 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1194 return; 1195 1196 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1197 1198 mutex_lock(&hci_cb_list_lock); 1199 list_for_each_entry(cb, &hci_cb_list, list) { 1200 if (cb->security_cfm) 1201 cb->security_cfm(conn, status, encrypt); 1202 } 1203 mutex_unlock(&hci_cb_list_lock); 1204 1205 if (conn->security_cfm_cb) 1206 conn->security_cfm_cb(conn, status); 1207 } 1208 1209 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, 1210 __u8 encrypt) 1211 { 1212 struct hci_cb *cb; 1213 1214 if (conn->sec_level == BT_SECURITY_SDP) 1215 conn->sec_level = BT_SECURITY_LOW; 1216 1217 if (conn->pending_sec_level > conn->sec_level) 1218 conn->sec_level = conn->pending_sec_level; 1219 1220 mutex_lock(&hci_cb_list_lock); 1221 list_for_each_entry(cb, &hci_cb_list, list) { 1222 if (cb->security_cfm) 1223 cb->security_cfm(conn, status, encrypt); 1224 } 1225 mutex_unlock(&hci_cb_list_lock); 1226 1227 if (conn->security_cfm_cb) 1228 conn->security_cfm_cb(conn, status); 1229 } 1230 1231 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1232 { 1233 struct hci_cb *cb; 1234 1235 mutex_lock(&hci_cb_list_lock); 1236 list_for_each_entry(cb, &hci_cb_list, list) { 1237 if (cb->key_change_cfm) 1238 cb->key_change_cfm(conn, status); 1239 } 1240 mutex_unlock(&hci_cb_list_lock); 1241 } 1242 1243 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1244 __u8 role) 1245 { 1246 struct hci_cb *cb; 1247 1248 mutex_lock(&hci_cb_list_lock); 1249 list_for_each_entry(cb, &hci_cb_list, list) { 1250 if (cb->role_switch_cfm) 1251 cb->role_switch_cfm(conn, status, role); 1252 } 1253 mutex_unlock(&hci_cb_list_lock); 1254 } 1255 1256 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type) 1257 { 1258 size_t parsed = 0; 1259 1260 if (data_len < 2) 1261 return false; 1262 1263 while (parsed < data_len - 1) { 1264 u8 field_len = data[0]; 1265 1266 if (field_len == 0) 1267 break; 1268 1269 parsed += field_len + 1; 1270 1271 if (parsed > data_len) 1272 break; 1273 1274 if (data[1] == type) 1275 return true; 1276 1277 data += field_len + 1; 1278 } 1279 1280 return false; 1281 } 1282 1283 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1284 { 1285 if (addr_type != ADDR_LE_DEV_RANDOM) 1286 return false; 1287 1288 if ((bdaddr->b[5] & 0xc0) == 0x40) 1289 return true; 1290 1291 return false; 1292 } 1293 1294 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1295 { 1296 if (addr_type == ADDR_LE_DEV_PUBLIC) 1297 return true; 1298 1299 /* Check for Random Static address type */ 1300 if ((addr->b[5] & 0xc0) == 0xc0) 1301 return true; 1302 1303 return false; 1304 } 1305 1306 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1307 bdaddr_t *bdaddr, u8 addr_type) 1308 { 1309 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1310 return NULL; 1311 1312 return hci_find_irk_by_rpa(hdev, bdaddr); 1313 } 1314 1315 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1316 u16 to_multiplier) 1317 { 1318 u16 max_latency; 1319 1320 if (min > max || min < 6 || max > 3200) 1321 return -EINVAL; 1322 1323 if (to_multiplier < 10 || to_multiplier > 3200) 1324 return -EINVAL; 1325 1326 if (max >= to_multiplier * 8) 1327 return -EINVAL; 1328 1329 max_latency = (to_multiplier * 4 / max) - 1; 1330 if (latency > 499 || latency > max_latency) 1331 return -EINVAL; 1332 1333 return 0; 1334 } 1335 1336 int hci_register_cb(struct hci_cb *hcb); 1337 int hci_unregister_cb(struct hci_cb *hcb); 1338 1339 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, 1340 const void *param, u32 timeout); 1341 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, 1342 const void *param, u8 event, u32 timeout); 1343 1344 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1345 const void *param); 1346 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1347 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1348 1349 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1350 1351 /* ----- HCI Sockets ----- */ 1352 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 1353 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 1354 int flag, struct sock *skip_sk); 1355 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 1356 1357 void hci_sock_dev_event(struct hci_dev *hdev, int event); 1358 1359 #define HCI_MGMT_VAR_LEN BIT(0) 1360 #define HCI_MGMT_NO_HDEV BIT(1) 1361 #define HCI_MGMT_UNTRUSTED BIT(2) 1362 #define HCI_MGMT_UNCONFIGURED BIT(3) 1363 1364 struct hci_mgmt_handler { 1365 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 1366 u16 data_len); 1367 size_t data_len; 1368 unsigned long flags; 1369 }; 1370 1371 struct hci_mgmt_chan { 1372 struct list_head list; 1373 unsigned short channel; 1374 size_t handler_count; 1375 const struct hci_mgmt_handler *handlers; 1376 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 1377 }; 1378 1379 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 1380 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 1381 1382 /* Management interface */ 1383 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 1384 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 1385 BIT(BDADDR_LE_RANDOM)) 1386 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 1387 BIT(BDADDR_LE_PUBLIC) | \ 1388 BIT(BDADDR_LE_RANDOM)) 1389 1390 /* These LE scan and inquiry parameters were chosen according to LE General 1391 * Discovery Procedure specification. 1392 */ 1393 #define DISCOV_LE_SCAN_WIN 0x12 1394 #define DISCOV_LE_SCAN_INT 0x12 1395 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 1396 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 1397 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 1398 #define DISCOV_BREDR_INQUIRY_LEN 0x08 1399 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 1400 1401 int mgmt_new_settings(struct hci_dev *hdev); 1402 void mgmt_index_added(struct hci_dev *hdev); 1403 void mgmt_index_removed(struct hci_dev *hdev); 1404 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 1405 int mgmt_powered(struct hci_dev *hdev, u8 powered); 1406 int mgmt_update_adv_data(struct hci_dev *hdev); 1407 void mgmt_discoverable_timeout(struct hci_dev *hdev); 1408 void mgmt_adv_timeout_expired(struct hci_dev *hdev); 1409 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 1410 bool persistent); 1411 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 1412 u32 flags, u8 *name, u8 name_len); 1413 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 1414 u8 link_type, u8 addr_type, u8 reason, 1415 bool mgmt_connected); 1416 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 1417 u8 link_type, u8 addr_type, u8 status); 1418 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1419 u8 addr_type, u8 status); 1420 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 1421 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1422 u8 status); 1423 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1424 u8 status); 1425 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1426 u8 link_type, u8 addr_type, u32 value, 1427 u8 confirm_hint); 1428 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1429 u8 link_type, u8 addr_type, u8 status); 1430 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1431 u8 link_type, u8 addr_type, u8 status); 1432 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 1433 u8 link_type, u8 addr_type); 1434 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1435 u8 link_type, u8 addr_type, u8 status); 1436 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 1437 u8 link_type, u8 addr_type, u8 status); 1438 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 1439 u8 link_type, u8 addr_type, u32 passkey, 1440 u8 entered); 1441 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 1442 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 1443 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); 1444 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 1445 u8 status); 1446 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 1447 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1448 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 1449 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len); 1450 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 1451 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 1452 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 1453 bool mgmt_powering_down(struct hci_dev *hdev); 1454 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 1455 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk); 1456 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 1457 bool persistent); 1458 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 1459 u8 bdaddr_type, u8 store_hint, u16 min_interval, 1460 u16 max_interval, u16 latency, u16 timeout); 1461 void mgmt_reenable_advertising(struct hci_dev *hdev); 1462 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 1463 1464 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 1465 u16 to_multiplier); 1466 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 1467 __u8 ltk[16], __u8 key_size); 1468 1469 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 1470 u8 *bdaddr_type); 1471 1472 #define SCO_AIRMODE_MASK 0x0003 1473 #define SCO_AIRMODE_CVSD 0x0000 1474 #define SCO_AIRMODE_TRANSP 0x0003 1475 1476 #endif /* __HCI_CORE_H */ 1477